WO2010023712A1 - Water sterilizing apparatus - Google Patents

Abstract

A water sterilizing apparatus that applies sterilizing / antibiotic / antifungal / insect proofing capabilities, etc. to passing water, or flowing water, or stored water for a prolonged period of time. The water sterilizing apparatus has a sterilizing unit comprising a base metal element and noble metal element coaxially piled on each other with a space holding member interposed therebetween. The sterilizing unit is disposed in passing water/flowing water, or immersed in stored water, so that a battery reaction is induced in a uniform interstitial space between the base metal element and the noble metal element through the medium of water. Thus, metal ions in completely ionized form are leached from the base metal element to thereby apply sterilizing capability to the water.

Description

Water sterilizer

The present invention elutes metal ions into water by battery action utilizing ionization tendency, and stores various water such as tap water, purified water, various containers, water tanks, pools, rivers, moat water, lake water, etc. The present invention relates to a water sterilizer that imparts functions such as sterilizing function, antibacterial function (including anti-fungal and other microorganism control functions), insect repellent and pest repellent functions to water.

Conventionally, water treatment tools using two kinds of metals having different ionization tendencies (potentials) have been developed. As a document related to this technique, for example, there is a technique described in Patent Document 1.
JP 2006-346550 A

Patent Document 1 discloses a water treatment tool that adds a predetermined function to water by submerging two kinds of different metals having different ionization tendencies (potentials) in water to be treated in a state of contact with each other. Yes. This water treatment tool includes a second metal made of magnesium and having a high ionization tendency (lower electrode potential) and a first metal having a low ionization tendency (higher electrode potential). Non-metallicity having a cylindrical shape that surrounds the outer periphery of the second metal in a state where a predetermined moving gap is formed, and a plurality of protrusions formed on the inner peripheral surface, wherein the first metal and the second metal have a plurality of through holes. The container is housed in a state where it can move relative to each other. As a result, electrons are transferred from the second metal having the lower electrode potential to the first metal having the higher electrode potential in order to prevent the corrosion of the first metal of the two different types of metals having different ionization tendencies (potentials). A metal local battery is formed, and metal ions are permanently eluted from the second metal by the corrosive action of the oxidation-reduction reaction thereby adding a predetermined function to water.

Specifically, as described in the paragraphs 0032 to 0036, the water treatment tool includes a first metal having a lower ionization tendency, a second metal having a higher ionization tendency than the first metal, and a non-metal containing them. And a metal container. The second metal is made of rod-shaped magnesium (Mg), and both ends thereof are fixed in a state where they are mounted in recesses formed in the bottom of the container body of the nonmetallic container and the center of the lid, respectively. The first metal has a cylindrical shape that surrounds the second metal with a predetermined movement gap formed on the outer periphery thereof, and a large number of small protrusions are formed on the inner peripheral surface, so that the first metal moves within the non-metallic container. Housed in a possible state. As the first metal, copper (Cu), iron (Fe), or the like can be used. And if the water treatment tool is simply immersed in the water to be treated, magnesium alone will oxidize and dissolve magnesium ions in the water, but in the case of magnesium alone, an oxide film is formed. When the elution of metal ions is stopped, a large number of projections of the first metal abut on the surface of the second metal, so that electrons are transferred from the second metal to the first metal in an attempt to prevent corrosion of the first metal. It is said that magnesium ions can be permanently eluted from magnesium constituting the second metal without forming an oxide film by the corrosive action of the oxidation-reduction reaction due to the formation of the local battery. In addition, an oxide film is formed on the surface of magnesium constituting the second metal in the atmosphere, and an oxide film is formed on a portion where the protrusion of the first metal is not in contact with the metal even when immersed in water. However, when the water treatment tool is used, if the water treatment tool is shaken a predetermined number of times, only the first metal moves in the non-metallic container, and the protrusion of the first metal and the second metal are mutually connected. By relatively moving in contact with each other, a large number of protrusions of the first metal can cause numerous scratches on the surface of magnesium constituting the second metal, thereby returning to a state where no oxide film is formed. It will be possible.

However, in the water treatment tool described in Patent Document 1, in the water to be treated, the multiple contacts of the first metal having a small ionization tendency are brought into contact with the outer peripheral surface of the second metal having a large ionization tendency. While a local battery is formed at a location to elute magnesium ions, Patent Document 1 does not clearly indicate from which part of the second metal the magnesium ions elute. It is considered that the magnesium ion is eluted from magnesium constituting the second metal at the outer peripheral surface portion of the second metal facing the protrusion (the minute area portion of the contact point portion of the protrusion). In this case, the protrusion of the first metal has a tapered cross-sectional shape (tapered shape), and the interval between the protrusion peripheral surface of the first metal and the outer peripheral surface of the second metal is non-uniform (gradual decrease or increase). For this reason, the local battery action between the first metal and the second metal becomes non-uniform, and it seems difficult to elute magnesium ions uniformly on the entire surface of the second metal. Further, as recognized by Patent Document 1 itself, the outer peripheral surface of the second metal is also in the outer peripheral surface portion of the second metal where the first metal protrusion is not in contact with the protrusion that is the magnesium ion eluting portion. Since an oxide film is formed on most of the material, elution of magnesium ions cannot be performed continuously unless the special operation before use is performed. That is, each time the water treatment tool is used, the water treatment tool is shaken a predetermined number of times, and only the first metal is moved in the non-metallic container to cause numerous scratches on the surface of the second metal. It is necessary to return to the state in which the film is not formed, the operation is troublesome, and the operation becomes very difficult when the apparatus is enlarged. Further, even if a number of scratches are made on the surface of the second metal by the projections of the first metal and the oxide film on the scratched portions is removed, the projections of the first metal are necessarily formed on the inner peripheral surface (densely provided). (For example), since the first metal is relatively moved with respect to the second metal, the movement trajectory of many protrusions, that is, the scar does not become the movement trajectory of the protrusion. There is no sticking to the part, and the oxide film remains formed in that part. Further, when the surface of the second metal is scratched by a large number of protrusions of the first metal, metal powder or metal particles (powdered magnesium) made by scraping from the surface of the second metal can flow into the water. There is sex. At the same time, the protrusion of the first metal may be scraped by friction with the second metal to become a granular metal and flow out into water. Accordingly, a large number of these powdery metals float or deposit in the treated water, and may not be suitable for applications that require high quality treated water. For this reason, in particular, the technology of Patent Document 1 is that the water of water supply devices such as water faucets and water purifiers that have high water quality standards and elution metal upper limit regulations (which are not assumed by the same document). It is difficult to apply to the usage of processing. Furthermore, since the water treatment tool according to Patent Document 1 is presupposed to be used by immersing it in stored water, it is naturally difficult to use it by placing it in a water passage of a water supply device such as a water supply or a water purifier.

Therefore, the present invention provides two types of reactants made of metals having different ionization tendencies in a water passage or a water flow space as a water flow environment or a water flow environment, along the water flow path or the water flow path, By placing it in an adjacent space where it can circulate with the water inside the running water space, or by placing it inside the water storage space as a water storage environment, It is an object of the present invention to provide a water sterilizer capable of imparting various functions such as antifungal and insect repellent over a long period of time.

The water sterilizer according to the present invention includes a first reactant, a second reactant, and a spacing member. The first reactant has a predetermined ionization tendency (or standard electrode potential), and is made of a first metal (base metal body) that metalizes in water and exhibits a bactericidal effect. The second reactant is composed of a second metal having a lower ionization tendency (or standard electrode potential) than the first metal, and the entire main part of the metal ion generation surface on the surface of the first reactant. 2 is a second reactant (noble metal body) having an opposing surface disposed to face the surface. For example, when the base metal body as the first reactant is a columnar shape such as a column, the second reactant is a corresponding cylindrical 1 that covers the entire outer peripheral surface of the base metal body. Pieces of precious metal bodies are used. Further, when the base metal body is a cylindrical shape such as a cylindrical shape, the second reactant is a corresponding cylindrical shape in which the base metal body is housed and the inner peripheral surface covers the entire outer peripheral surface of the base metal body. One first noble metal body (outer noble metal body) and one corresponding second cylindrical noble metal body that is housed in the base metal body and whose outer peripheral surface faces the entire inner peripheral surface of the base metal body (Inner noble metal body) is preferably used. In addition, the spacing member has a small gap space that is uniform in at least the entire length direction so that the first reactant and the second reactant are not in contact with each other over the entire surface. It is made of an electrical insulator that is held in a state where it is placed so as to face each other in a fixed manner (for example, it cannot be moved unless an external force that intentionally separates it is applied). The gap space is a small gap that can exert a battery action, and in the case of a river or the like, the absolute value is large for securing the flow rate, but is relatively about the thickness of the first reactant. In addition, the gap space has the same thickness at least in the length direction, but the thickness may change in the width direction and the circumferential direction. For example, when a noble metal body is formed in a cylindrical shape and a columnar base metal body is internally arranged, a plurality of concave grooves (such as a hemispherical cross section) extending in the axial direction on the outer peripheral surface of the columnar base metal body are provided in the circumferential direction. If the base metal body and the noble metal body are extended so as to be parallel to each other at a certain interval, the gap space between the base metal body and the noble metal body is the portion of the outer peripheral surface of the simple columnar base metal body in a portion other than the concave groove on the outer peripheral surface of the base metal body. As in the case, the distance (thickness) is uniform (same) not only in the length direction (axial direction) but also in all directions including the width direction and the circumferential direction. On the other hand, in the width direction, the thickness gradually decreases toward the center of the concave groove and changes in thickness. However, even in this case, if at least the thickness in the length direction of the previous gap is made uniform, complete metal ionization from the base metal body can be expected, and cavitation corrosion due to shape changes such as unevenness of the base metal body, etc. Can be prevented. And the water sterilizer which concerns on this invention is a clearance gap between the said 1st reactant and the said 2nd reactant by water-passing in a water passage, or being immersed in water storage water. Due to the difference in the ionization tendency between the first reactant and the second reactant (battery action due to the difference in ionization tendency), the ionization tendency is large as described above through the water entering the space. The base metal ions of the first reactant elute into the water from the first reactant composed of the base metal toward the second reactant composed of the noble metal having a low ionization tendency as described above.・ Provides sterilization function to water. In the present invention, sterilization includes concepts such as antibacterial, sterilization, sterilization, and antibacterial, and target fungi also include various microorganisms such as bacteria and fungi. Therefore, the antibacterial function includes an antifungal function.

Moreover, in the water sterilizer according to the present invention, the first reactant can exert a strong sterilizing power as a zinc alloy containing magnesium (ZnMg alloy). Alternatively, the first reactant can be formed from magnesium alone to exert a strong bactericidal power. Further, the second reactant is preferably made of stainless steel such as SUS304 so as to exhibit corrosion resistance and discoloration resistance. Furthermore, the second reactant has a predetermined cross-sectional shape with a predetermined diameter in which at least a main part (occupying most of the length direction) has the same cross-sectional shape in the axial direction, and the whole is a hollow cylinder (cylindrical) And a communication space that extends in the axial direction. The first reactant has a predetermined cross section in which at least a main part (occupying most of the length direction) has an outer diameter smaller than the inner diameter of the second reactant and has the same cross-sectional shape in the axial direction. It has a shape and is entirely formed in a solid columnar shape (columns such as a columnar shape, a polygonal columnar shape, and a deformed cylindrical shape), and is coaxially disposed in the communication space of the second reactant. Normally, the first reactant has a columnar shape extending in the axial direction with the same cross-sectional shape as a whole. For example, the columnar tip (upstream end in the flowing water direction) is a hemispherical tip. It is also possible to have a shape in which the cross-section is gradually reduced toward. In this case, a portion having the same cross-sectional shape excluding the tip is the main portion. In general, the second reactant is generally cylindrical with the same cross-sectional shape and extending in the axial direction. For example, according to the shape of the tip of the first reactant that gradually decreases as described above. A tapered tip portion may be provided, and in this case, a portion having the same cross-sectional shape excluding the tip portion becomes the main portion. On the other hand, the spacing member is disposed between the first reactant and the second (at least one of them) in a state where the first reactant is coaxially disposed in the communication space of the second reactant. And the outer peripheral surface side of the first reactant is in contact with the inner peripheral surface of the second reactant in the form of a dot or a line, and the inner peripheral surface of the cylindrical portion is the entire first portion. The first reactant and the second reactant are brought into non-contact with each other over the entire surface in contact with the outer peripheral surface of the reactant in a dot-like or linear manner, and at least the length of the main parts thereof They are fixedly held in a state where they are arranged so as to face each other with a gap space of uniform small intervals over the entire length direction. In this case, the spacing member may be simply held by the frictional force between the first reactant and the second reactant so that it cannot move unless an external force that intentionally separates is applied. Good. Thus, by arranging the columnar base metal body inside the cylindrical noble metal body, the outer peripheral surface of the base metal body is entirely opposed to the inner peripheral surface of the noble metal body with a small gap, and the outer peripheral surface of the base metal body Since the metal ions are uniformly eluted from the whole and completely converted to metal ions, the outer peripheral surface of the base metal body is not oxidized and discolored (discolored black) by dissolved oxygen in water. Also, if the inner base metal body is cylindrical, the inner peripheral surface of the base metal body will gradually discolor with use unless a noble metal body facing the inner peripheral surface is installed. In the case of a columnar shape, there is no inner peripheral surface as in the case of a cylindrical shape, and the outer peripheral surface, which is an ion elution surface, always faces the inner peripheral surface of the noble metal, so the discoloration of the outer peripheral surface of the base metal body and the oxide film Formation can be prevented, and the desired ion elution effect can be maintained permanently as long as the base metal body does not disappear by elution.

The spacing member is made of an electrically insulating resin material (other than a normal resin material or an electrically conductive resin material), and the entire gap space between the first reactant and the second reactant. An inner isolation mesh tube having a net-like cylindrical portion having a uniform thickness corresponding to the shape, and an inner peripheral surface side of the cylindrical portion abuts on the entire outer peripheral surface of the first reactant in a dotted or linear manner. (For example, a hemispherical or pin-like protrusion-like contact portion is provided on the outer peripheral surface side so as to contact in a dotted manner, or a rib having a linear top portion is provided to contact in a linear shape. In addition, the outer peripheral surface side of the cylindrical portion is in contact with the inner peripheral surface of the second reactant in a dotted or linear manner, and the first reactant and the second reactant The gap space with the uniform interval is formed and held between the two. When the space holding member comes into surface contact with the base metal body, the base metal body is shielded from the noble metal body by the space holding member at the surface contact portion, and the surface facing between the base metal body and the noble metal body is hindered. Therefore, there is a possibility that the initial metal ionization is not performed without the battery action. In addition, even if the spacing member is in surface contact with the base metal body, water enters the surface contact portion. Therefore, in conjunction with the fact that ions are not eluted, the base metal in the surface contact portion is dissolved by dissolved oxygen in water. There is also a possibility that the outer peripheral surface of the body changes color. However, in the case of point contact or line contact, even if the spacing member is interposed, the base metal body completely faces the noble metal body over the entire surface, and the desired battery action occurs and the entire surface of the base metal body. Complete metal ionization is performed, and unspecificity such as discoloration of the outer peripheral surface of the base metal does not occur.

Here, in this invention, the space | interval (thickness) of the clearance gap between the 1st reactant and the 2nd reactant determined by the space | interval holding member is the 1st reactant and the 2nd reactant. However, if the sterilizing unit is small, the interval is relatively small (narrow interval or minute interval), and if the sterilizing unit is large, the value is relatively small. For example, in the case of a sterilization unit for rivers or the like, the absolute value is large for securing a flow rate, but is relatively about the thickness of the cylindrical second reactant. In addition, a groove may be provided in the width direction and the circumferential direction, and the distance may be gradually increased after the interval is gradually decreased.

By the way, in the water sterilizer of the present invention, the second reactant made of the noble metal body has a predetermined cross-sectional shape with a predetermined diameter in which at least the main part (occupying most of the length direction) has the same cross-sectional shape in the axial direction. 1st reaction which consists of a base metal body which has the communication space which is formed in the hollow cylinder shape (cylindrical shape, various cylinder shapes, such as a polygonal cylinder shape, and a deformed cylinder shape), and extends in the axial direction. The body has a predetermined cross-sectional shape in which at least a main part (occupying most of the length direction) has an outer diameter smaller than the inner diameter of the second reactant and has the same cross-sectional shape in the axial direction, and the whole Is formed in a solid columnar shape (columnar shape such as a columnar shape, a polygonal columnar shape, and a deformed cylindrical shape) and is coaxially disposed in the communication space of the second reactant. However, in the present invention, the second reactant made of the noble metal body has a predetermined cross-sectional shape with a predetermined diameter in which at least a main part (occupying most of the length direction) has the same cross-sectional shape in the axial direction, and The first reactant made of a base metal body has a communication space that is formed in a hollow cylinder (various cylinders such as a cylinder, a polygonal cylinder, and an irregular cylinder) and extends in the axial direction. The main part (which occupies most of the length direction) has an outer diameter smaller than the inner diameter of the second reactant and has a predetermined cross-sectional shape that is the same cross-sectional shape in the axial direction, and the whole is a solid columnar shape ( Any columnar shape, various columnar shapes such as a polygonal columnar shape, and an irregularly shaped cylindrical shape) may be used as long as they are arranged coaxially in the communication space of the second reactant. In this case, the spacing member is disposed between the first reactant and the second in a state where the first reactant is coaxially disposed in the communication space of the second reactant. At least a part of the inner peripheral surface of the second reactant, and the inner peripheral surface of the cylindrical portion is entirely in contact with the inner peripheral surface of the second reactant. Abutting in a dotted or linear manner on the outer peripheral surface of the first reactant (in a state of being sandwiched between the first reactant and the second reactant, so as not to move unless intentionally detached) Or may be fixed.) The first reactant and the second reactant are in contact with each other over the entire surface, and at least the entire longitudinal direction of their main parts. So that they are facing each other with a uniform small gap across In location state, as long as the fixedly (so immovable) held together.

Further, in the water sterilization apparatus of the present invention, the upper isolation net plate, the outer isolation net tube, and the lower isolation net plate as the isolation members may be in surface contact with the mating member without having support lines or support points. However, from the viewpoint of securing the flow rate, etc., it is supported by contact with the upper and lower end surfaces of the base metal body and the noble metal body and the outer peripheral surface of the noble metal body by line contact with the support wire, particularly point contact with the support point. In addition, it is preferable to configure so as to come into contact with opposing members outside the base metal body. Similarly, the spacing member is configured to support at least the outer peripheral surface of the base metal body by line contact with a support line, in particular, point contact by a support point. It is preferable to do.

The water sterilizer according to the present invention has two kinds of reactants (base metal body and noble metal body) made of metals having different ionization tendencies, a water flow path as a water flow environment or a water flow environment (water flow path of a water supply device, etc.) or water flow Located in a space (river, etc.) along a water flow path or a water flow path, or in an adjacent space that can circulate with water in the water flow path or the water flow space (at a position adjacent to the water pipe's water flow path) Sterilization and antibacterial against the water flow or running water or water storage by placing it in the internal space of the housing provided) or by placing it in the water storage space (water storage tank etc.) as the water storage environment -Various functions such as antifungal and insect repellent can be imparted over a long period of time. Moreover, the water sterilizer which concerns on this invention maintains a uniform clearance gap by a space | interval holding member. Here, the base metal body elutes metal by a battery reaction with a noble metal body using water as a medium in a water environment such as a water flow environment, a flowing water environment, and a water storage environment (hereinafter, such a battery reaction is referred to as “water The metal ions of the base metal body may be eluted from the surface adjacent to the noble metal body in addition to the surface facing the noble metal body. It is thought that it elutes from the opposite surface. And since the water sterilizer according to the present invention maintains a uniform gap space between the noble metal body and the base metal body by the interval holding member, the base metal body is used as a columnar shape and the outer periphery outside the base metal The outer peripheral surface of the columnar base metal body that becomes the main metal ion elution surface when the base metal body is formed into a cylindrical shape or a noble metal body that covers the inner peripheral side and the outer peripheral side of the base metal body is provided. Surface facing the inner peripheral surface of the noble metal body) or inner surface of the cylindrical base metal body (the surface facing the outer peripheral surface of the inner noble metal body) and outer surface (the surface facing the inner peripheral surface of the outer noble metal body) ) Can maintain uniform metal ion elution from the entire surface. Moreover, the base metal body which is a metal body can elute a metal ion from the surface until it lose | disappears by long-term elution of a metal ion. That is, if the base metal body does not maintain a uniform gap space with the noble metal body, a uniform water environment battery reaction is not formed between the base metal body and the noble metal body, and the metal of the base metal body elutes in a completely ionized state. Without leaching, it will elute as powdered metal, greatly reducing the bactericidal effect (in the case of powdered metal that is not a metal ion, the bactericidal effect is greatly reduced), and also turbid fresh water The water sterilization apparatus according to the present invention causes the base metal body and the noble metal body to have a defect such as a gold odor or the like, which deteriorates the water quality and becomes inappropriate as drinking water. Since the uniform gap interval is permanently maintained over the entire surface, metal ions are eluted from the base metal body in a completely ionized state, and the granular metal is not eluted or released. Reliably prevent Rukoto can. As a result, the water sterilizer according to the present invention can sterilize or sterilize bacteria in water, and can also kill, reduce, or prevent the growth of fungi such as fungi and microorganisms. Furthermore, when the water sterilization apparatus according to the present invention is used in an aqueous environment, the metal ions of the base metal body can be eluted into the water to generate functional water containing the metal ions. By spraying on a plant or the like, various functions such as an insect repellent function and a pest repellent function on the plant can be exhibited.

That is, the water sterilizer according to the present invention is a technology that reversely utilizes an electrochemical reaction in which a base metal body facing a noble metal body in a water environment generates rust or metal corrosion due to the action of a corrosion cell. In addition, since the metal corrosion (metal elution) of the base metal body in this case is performed in a completely ionized state, the base metal body is held in a state of facing the noble metal body with a uniform gap interval by the interval holding member. Thus, only metal ions in a completely ionized state are eluted from the base metal body into the water environment to functionalize the water environment, thereby reliably preventing the elution or release of the particulate metal. In particular, when an external force is applied to the noble metal body during use and the noble metal body is indented or deformed, a slight gap space between the base metal body is blocked by the deformed portion, and the water flow environment or running water environment In the gap space that becomes the water flow / flow water space in the case, or the deformed part of the noble metal body presses against the base metal body and bites into the interior, making it electrically conductive, and other gap spaces Compared with, excessive corrosion current is generated in the welded part, and the base metal body in that part is released in a non-ionized state (powdered metal), or turbulence occurs in the welded part in a flowing or flowing environment. Then, there is a possibility that the cavity corrosion is generated and the metal of the base metal body is released in a larger granular form, or the base metal body of the part is corroded greatly. In addition, at the pressure contact portion, at least the gap distance between the noble metal body and the base metal body has a nonuniform and messy thickness, so that it is impossible to expect uniform metal ion elution from the base metal body. However, in the present invention, preferably, the spacing member is formed in a corresponding cylindrical shape that is interposed over the entire gap space between the noble metal body and the base metal body, and a plurality of small holes are locked over the entire surface (network). Therefore, it is possible to reliably prevent the cylindrical noble metal body from being deformed by an external force or the like during use, and to reliably prevent the above problems.

Furthermore, the base metal body can be formed from zinc alone, a zinc alloy containing magnesium (zinc magnesium alloy), magnesium alone, and from a zinc alloy containing zinc in terms of bactericidal power (zinc magnesium alloy), magnesium alone. Although it is preferable to form, as a result of earnest experimental research, the present inventors, in the case of a base metal body made of these metal materials, when the base metal body is in surface contact with an electrical insulator (resin material or glass material), It was confirmed that the base metal body changed color on the contact surface. When the base metal body is discolored, water pollution occurs due to elution of the discolored metal and the like, and the condition as clean water such as drinking water is not satisfied. This is because, in the range of the contact surface between the base metal body and the electrical insulator, the battery reaction is almost completely blocked using water between the base metal body and the noble metal body, and the surface of the base metal body in the range of the contact surface This is considered to be because the metal ions are not eluted from the surface, and as a result, the surface of the base metal body in the range of the contact surface is oxidized or discolored by dissolved oxygen in water. Further, in the case of such surface contact, the battery reaction is almost completely blocked using water between the base metal body and the noble metal body, and metal ions do not elute from the surface of the base metal body in the range of the contact surface. If the contact surface portion of the base metal body cannot be used as an ion elution surface, and the area increases, the sterilization effect of the entire sterilization apparatus is reduced accordingly. Therefore, the present inventors based on the knowledge, at least for the base metal body, so that the spacing member is not in surface contact, that is, the contact of the spacing member to the base metal body is line contact or point contact, A spacing member is formed. For example, the spacing member has a mesh tube shape, and the contact side of the linear portion constituting the mesh is raised to form a cross-sectional projection, whereby the contact portion with the base metal body of the spacing member has a linear portion. Consists only of the tip line, or by providing a dot-like projection on the contact side of the crossing portion of the mesh, the contact portion with the base metal body of the spacing member is configured only from the tip of the projection. It seems to be done. In addition, it is preferable that the contact part with the base metal body of a space | interval holding member is a point contact from the point which accelerates | stimulates the approach and filling of the water to the clearance gap between a noble metal body and a base metal body. Moreover, the space | interval holding member which combined the said line contact and the point contact (the line contact part and the point contact part were mixed) can also be used. As a result, the spacing member is in contact with at least the base metal body only by line contact or point contact, and does not come into contact with the surface at all, thus reliably preventing the above-described problems such as discoloration and ion non-eluting. can do. In addition, if the spacing member is supported by contact with the noble metal body by the same line contact or point contact as described above, the entire surface of the facing surface (gap space) between the noble metal body and the base metal body. However, the portion where the spacing member is not present (the mesh portion or small hole portion of the mesh-like spacing member) is naturally the portion where the spacing member is present (the mesh portion or line of the mesh-like spacing member) Even in the case of such a portion, such a portion is in line contact or point contact with the noble metal body and the base metal body, and the surface coverage area of the noble metal body and the base metal body by the portion is substantially zero. Therefore, the noble metal body and the base metal body, as in the case where the contact portion of the spacing member does not exist, the entire surfaces of the facing surfaces face each other, and the entire surface of the facing surface of the base metal body is utilized as the ion elution surface. Therefore, various effects by elution of metal ions using a base metal body such as the sterilizing effect of the entire sterilizing apparatus can be greatly improved. In addition, as described above, even when the spacing member is formed over the entire surface of the opposing surface of the noble metal body and the base metal body, if the spacing member is supported by the line contact or the point contact, the noble metal body and the base metal body are supported. A synergistic effect due to the above effects can be obtained.

In addition, at least from the point of preventing discoloration of the base metal body, at least an electrical insulating member that prevents contact between the base metal body and other members (upper isolation mesh plate, lower isolation described later), even if it is other than the spacing member. For the mesh plate or the like, the contact with the base metal body is preferably the same line contact or point contact. It is also possible to prevent discoloration of precious metal bodies and when discoloration of base metal bodies and other metal bodies in contact with precious metal bodies is anticipated (when these metal bodies are materials that may discolor in water). In view of the above, with respect to electrical insulating members (such as an upper isolation mesh plate and a lower isolation mesh plate, which will be described later) that prevent contact between the base metal body or the noble metal body and other members, contact the metal body with the same line. Contact or point contact is preferred. Moreover, in this case, the effect of facilitating flowing water between the base metal body or the noble metal body and the electrical insulating member that prevents the contact between the base metal body or the noble metal body and other members is also obtained. In addition, as described above, when the spacing member has a shape over the entire gap space between the noble metal body and the base metal body, and the contact is made by line contact or point contact, the base metal body is caused by elution of metal ions over a long period of time. Even if the thickness is gradually reduced, the decrease in thickness is uniform over the entire surface of the base metal body, and the thickness of the base metal body is always uniform over the entire surface. Therefore, even if the base metal body is reduced in thickness by elution of metal ions, the thickness of the gap interval between the noble metal bodies is always uniform throughout, regardless of the period of use (until the base metal body disappears by ion elution), The entire surface of the base metal body faces the entire surface of the noble metal body at a uniform interval, and complete elution of metal ions can be performed continuously. In this case, it is considered that a further gap is generated between the spacing member and the base metal body or the noble metal body, but even in this case, the base metal body is in direct contact with the noble metal body due to the presence of the spacing member. Absent. Further, as described above, if the upper and lower ends of the noble metal body and the base metal body interposing the interval holding member are closed and supported by another mesh plate-like electrical insulator (isolation net plate), the interval holding member Even if a further gap is generated between the base metal body and the noble metal body, the base metal body will not be displaced or even separated in the worst case. Further, in this case, the base metal body, the spacing member, the noble metal body and the upper and lower separating nets can be integrated into a unit, and the sterilizer is used as a unit in a water environment such as various water supply devices. Easy to attach and detach.

The sterilization apparatus of the present invention, when used in a water flow environment or a flowing water environment, has a small-diameter columnar shape (including a simple columnar shape, a cross-sectional chrysanthemum-shaped columnar shape, etc.) and an outer side of the base metal body. A combination with a noble metal body having a large diameter cylindrical shape (including a simple cylindrical shape and a chrysanthemum shape cylindrical shape, etc.) fitted with a gap interval by a spacing member can be used. The upstream side of the cylindrical base metal body in the direction of water flow (the side where the running water collides) is a flat surface (the surface that will be awarded with running water) as in the case of a simple columnar shape, but the hemispherical running water is The shape is preferably guided to the surface. Also, when the base metal body is a simple columnar shape, the noble metal body is a cylindrical shape with a cross-sectional chrysanthemum shape. On the contrary, when the noble metal body is a simple cylindrical shape, By guiding the running water along the axial direction by the concave groove due to (guided in the same direction without changing the running water direction), it is preferable to reduce the running water resistance and exert a rectifying effect. The sterilization apparatus of the present invention, when used in a flowing water environment or a flowing water environment, is a small-diameter columnar noble metal body and a medium-diameter cylinder that is fitted to the outside of the noble metal body with a gap between the gap holding members. The base metal body can be used in combination with a large-diameter cylindrical noble metal body that is fitted outside the base metal body with a gap between the gap holding members. The noble metal body is preferably a chrysanthemum section. Note that the base metal body is a material that is more easily corroded and discolored in water than the noble metal body, such as zinc magnesium alloy and magnesium, but even if the base metal body is cylindrical in this way, the noble metal body is inside. When housed and arranged, uniform and reliable metal ion elution is performed on the inner peripheral surface side of the base metal body with the noble metal body by the same mechanism as the outer peripheral surface side, and the inner peripheral surface of the base metal body is discolored. There is no trouble such as doing. That is, regardless of whether water pollution due to discolored magnesium or the like need not be taken into account at all, usually, when the base metal body is formed into a cylindrical shape, it is necessary to dispose the noble metal body not only on the outside but also on the inside. On the other hand, when a material that can prevent corrosion and discoloration over a long period of time in a normal water environment such as stainless steel is selected as the noble metal body, the noble metal body disposed inside the base metal body does not discolor even as a cylinder, There is no particular problem (it is of course possible to make it columnar). In addition, for the outer peripheral surface of the cylindrical noble metal body disposed outside the base metal body, when a material that can prevent corrosion and discoloration over a long period of time in a normal water environment such as stainless steel is selected as the noble metal body, discoloration, etc. This problem can basically be ignored.

FIG. 1 is an exploded perspective view showing a drain adapter as a water sterilizer according to Embodiment 1 of the present invention. FIG. 2 is an assembly view showing a state in which each component is inserted and accommodated in the drainage housing of the drainage adapter as the water sterilizer according to Embodiment 1 of the present invention. FIG. 3 is an enlarged cross-sectional view showing a water draining adapter as a water sterilizing apparatus according to Embodiment 1 of the present invention and its attached state. FIG. 4 is a partial cross-sectional view showing a state in which a drain adapter as a water sterilizer according to Embodiment 1 of the present invention is attached to a single lever faucet, and shows an enlarged portion of the drain adapter. FIG. 5 is an exploded perspective view showing a drain adapter as a water sterilizer according to Embodiment 2 of the present invention. FIG. 6 is an assembly diagram illustrating a state in which each component is inserted and accommodated in a drain housing of a drain adapter as a water sterilizer according to Embodiment 2 of the present invention. FIG. 7: is an expanded sectional view which shows the drain adapter as a water sterilizer which concerns on Embodiment 2 of this invention, and its attachment state. FIG. 8 is an exploded perspective view showing a spout adapter as a water sterilizer according to Embodiment 3 of the present invention. FIG. 9 is an assembly diagram showing a state in which each component is inserted and accommodated in a water discharge cap of a water discharge adapter as a water sterilizer according to Embodiment 3 of the present invention. FIG. 10: is an expanded sectional view which shows the water outlet adapter as a water sterilizer which concerns on Embodiment 3 of this invention, and its attachment state. FIG. 11 shows a water draining adapter as a water sterilizing apparatus according to Embodiment 1 of the present invention attached to a mounting portion provided on the lower surface side of a water discharge pipe base end of a single lever faucet, and in Embodiment 3. It is sectional drawing which shows the state which attached the water outlet adapter as the water sterilizer to the attachment part provided in the lower surface side of the water discharge pipe tip of a single lever faucet, and shows the attachment state of the water drain adapter and water outlet adapter Enlarged view. FIG. 12 is an exploded perspective view showing a water drain adapter as a water sterilizer according to Embodiment 4 of the present invention. FIG. 13 is an exploded perspective view showing a drain adapter as a water sterilizer according to another example of Embodiment 4 of the present invention. FIG. 14 is an exploded perspective view showing a spout adapter as a water sterilizer according to another example of Embodiment 3 of the present invention. FIG. 15: is a disassembled perspective view which shows the adapter for water purifiers as the water sterilizer based on Embodiment 5 of this invention. FIG. 16: is an assembly figure which shows the state which inserts and accommodates each component in the housing for water purifiers of the adapter for water purifiers as a water sterilizer based on Embodiment 5 of this invention. FIG. 17: is sectional drawing which shows the adapter for water purifiers as the water sterilizer based on Embodiment 5 of this invention. FIG. 18 is an explanatory diagram schematically showing Zn ions and Mg ions in water as well as showing the usage state of a PET bottle adapter as a water sterilizer according to Embodiment 6 of the present invention. FIG. 19 shows a PET bottle adapter main body of a PET bottle adapter as a water sterilizer according to Embodiment 6 of the present invention. FIG. FIG. FIG. 20 shows a PET bottle adapter case of a PET bottle adapter as a water sterilizer according to Embodiment 6 of the present invention, (a) is a plan view, and (b) is a front view showing a right half section in section. FIG. 4C is a bottom view. FIG. 21 is a side view schematically showing Zn ions and Mg ions while showing a state where a PET bottle adapter as a water sterilizer according to Embodiment 6 of the present invention is attached to a drinking mouth of a PET bottle. It is a figure, (a) is a state where the PET bottle is upright, (b) is a state where the PET bottle is inverted (inverted). FIG. 22 is an explanatory view schematically showing Zn ions and Mg ions in water as well as showing a usage state of the polytank adapter as a water sterilizer according to Embodiment 7 of the present invention. FIG. 23 shows a polytank adapter main body of a polytank adapter as a water sterilizer according to Embodiment 7 of the present invention, (a) is a plan view, and (b) is a front view showing a left half part in cross section. 24A and 24B show a polytank adapter case of a polytank adapter as a water sterilizer according to Embodiment 7 of the present invention, in which FIG. 24A is a plan view and FIG. 24B is a front view showing a right half section in section. FIG. 25: is explanatory drawing which shows the state which attached the poly tank adapter as a water sterilizer based on Embodiment 7 of this invention to the spout of a poly tank, and typically shows Zn ion and Mg ion, (a) Indicates a state in which the polytank is upright, and (b) indicates a state in which the polytank is reversed (inverted). FIG. 26 is a perspective view showing an attached state of the float adapter as the water sterilizer according to Embodiment 8 of the present invention. FIG. 27 is a side view showing an attached state of a float adapter as a water sterilizer according to Embodiment 8 of the present invention. FIG. 28 is a cross-sectional view showing an attached state of a float adapter as a water sterilizer according to Embodiment 8 of the present invention. FIG. 29 is an exploded perspective view showing one of the float adapters as a water sterilizer according to Embodiment 8 of the present invention removed from the float. FIG. 30 is an exploded perspective view showing a float adapter as a water sterilizer according to Embodiment 8 of the present invention. FIG. 31 is an assembly view showing a state in which each component is inserted and accommodated in the float adapter body of the float adapter as the water sterilizer according to Embodiment 8 of the present invention. FIG. 32 is a cross-sectional view showing a float adapter as a water sterilizer according to Embodiment 8 of the present invention. FIG. 33 is a cross-sectional view showing an input sterilizer as a water sterilizer according to Embodiment 9 of the present invention. FIG. 34 is an explanatory view showing the use state of the input type sterilizer as the water sterilizer according to Embodiment 9 of the present invention, where (a) is a use state in a large-sized plastic tank, and (b) is a bath tub. Indicates the state of use. FIGS. 35A and 35B are explanatory views showing the usage state of the throwing-type sterilization apparatus as the water sterilization apparatus according to Embodiment 9 of the present invention, where FIG. The usage state in the aquarium used for fish etc. is shown. FIG. 36: shows the switching cock which attached the adapter for switching cocks as a water sterilizer based on Embodiment 10 of this invention, (a) is the front view, (b) is sectional drawing corresponding to (a) It is. FIG. 37 is an exploded perspective view showing a switching cock adapter as a water sterilizer according to Embodiment 10 of the present invention. FIG. 38 is an exploded perspective view showing a switching cock adapter as a water sterilizer according to Embodiment 11 of the present invention. FIG. 39 is an assembly view showing a state in which each component is inserted and accommodated in the water discharge cap of the switching cock adapter as the water sterilizer according to Embodiment 11 of the present invention. FIG. 40 is a side view showing a state in which a sterilization unit is installed on the upstream side (raw water inlet) and the downstream side (purified water outlet) of a water purifier as a water sterilizer according to Embodiment 12 of the present invention. Is shown in section, and the downstream sterilization unit is enlarged and shown. FIG. 41 is a side view showing a spray head as a water sterilizer according to Embodiment 13 of the present invention, with the main part broken and showing the internal sterilizer in cross section. FIG. 42 is a side view showing a shower head as a water sterilizer according to Embodiment 14 of the present invention, and FIG. The sterilization unit is shown in cross section, and (b) shows the internal sterilization apparatus in cross section by breaking the spraying portion (shower cap) portion of the shower head of the second example. FIG. 43 is a side view showing a drawer shower faucet as a water sterilizer according to Embodiment 15 of the present invention, with the main part broken and showing the internal sterilizer in cross section. FIG. 44 is a cross-sectional view schematically showing a wash water faucet equipped with a wash faucet adapter as a water sterilizer according to Embodiment 16 of the present invention, and schematically showing Zn ions and Mg ions in water flow. Fig. 2 shows an enlarged bathroom faucet adapter. FIG. 45 is a plan view showing a branch header to which a branch header adapter as a water sterilization apparatus according to Embodiment 17 of the present invention is attached. The adapter is shown in cross section. FIG. 46 is a front view showing a sprinkler as a water sterilizer according to Embodiment 18 of the present invention, showing the right half of the sprinkler in cross section and the right half of the sterilization unit housed in the sprinkler in cross section. . FIG. 47 is a cross-sectional view showing a small circulation filtration device as a water sterilization device according to Embodiment 19 of the present invention. FIG. 48 is a cross-sectional view showing a large-scale circulation filtration apparatus as a water sterilization apparatus according to Embodiment 20 of the present invention. FIG. 49 shows piping intermediate mounting parts as a water sterilizer according to Embodiment 21 of the present invention, (a) is a front view thereof, (b) is a cross-sectional view corresponding to (a), and (c) is shown. It is an internal structure figure which shows the inflow port and outflow port to a sterilization unit in the inside of piping attachment components. FIG. 50 shows a double-type piping intermediate mounting part as a water sterilizer according to Embodiment 22 of the present invention, in which (a) is a front view thereof and (b) is a cross-sectional view corresponding to (a). FIG. 51 is an assembly view showing a state in which a sterilization unit is assembled in a housing of a double type piping intermediate mounting part as a water sterilization apparatus according to Embodiment 22 of the present invention. FIG. 52 is a schematic view showing a state in which a double-type piping intermediate mounting part as a water sterilizing apparatus according to Embodiment 22 of the present invention is mounted in the middle of piping between a water heater and a bathtub. FIG. 53 is a perspective view showing a state in which a rectangular river purification apparatus as a water sterilization apparatus according to Embodiment 23 of the present invention is arranged on the riverbed, and a part (corner portion) of the rectangular river purification apparatus Is shown enlarged. FIG. 54 is a perspective view showing a state where a round river purification apparatus as a water sterilization apparatus according to Embodiment 26 of the present invention is arranged on the riverbed, and a part (corner portion) of the round river purification apparatus. Is shown enlarged. FIG. 55 shows water sterilizers according to Embodiments 1 to 3 of the present invention. FIG. 55 (a) shows the disassembled state and assembled state of the water sterilizer comprising the single type round sterilizer unit according to Embodiment 1. (B) shows the disassembled state and the assembled state of the water sterilizer comprising the single type round sterilizing unit according to the second embodiment, and (c) shows the third embodiment. The assembly state of the water sterilization apparatus which consists of the single type square sterilization unit which concerns is shown with a perspective view, and an internal structure is shown with sectional drawing. FIG. 56 shows a disassembled state and an assembled state of a water sterilizer composed of a double-type round sterilization unit according to Embodiment 4 of the present invention in a perspective view and a sectional view of an internal structure. FIG. 57 shows a base metal body of a water sterilizer according to Examples 5 to 8 of the present invention, (a) is a perspective view showing a base metal body of Example 5, and (b) shows a base metal body of Example 6. (C) is a perspective view which shows the base metal body of Example 7, (d) is a perspective view which shows the base metal body of Example 8. FIG. FIG. 58 shows a noble metal body of a water sterilization apparatus according to Examples 9 to 16 of the present invention, (a) is a perspective view showing the noble metal body of Example 9, and (b) shows a noble metal body of Example 10. (C) is a perspective view showing a noble metal body of Example 11, (d) is a perspective view showing a noble metal body of Example 12, (e) is a perspective view showing a noble metal body of Example 13, and (f) ) Is a perspective view showing a noble metal body of Example 14, (g) is a perspective view showing a noble metal body of Example 15, and (h) is a perspective view showing a noble metal body of Example 16. FIG. FIG. 59 shows a sterilization unit of a water sterilizer according to Example 17 of the present invention, (a) is a front view, (b) is a plan view, (c) is a sectional view taken along line AA in (a), (D) is a sectional view taken along line BB of (b), and (e) is an explanatory view showing an assembled state in a perspective view. FIG. 60 shows a sterilization unit of a water sterilizer according to Example 18 of the present invention, (a) is a front view, (b) is a plan view, (c) is a sectional view taken along line AA in (a), (D) is a sectional view taken along line BB of (b), and (e) is an explanatory view showing an assembled state in a perspective view. 61 shows a sterilization unit of a water sterilizer according to Example 19 of the present invention, (a) is a front view, (b) is a plan view, (c) is a cross-sectional view taken along line AA of (a), (D) is a sectional view taken along line BB of (b), and (e) is an explanatory view showing an assembled state in a perspective view. 62 shows a sterilization unit of a water sterilizer according to Example 20 of the present invention, (a) is a front view, (b) is a plan view, (c) is a cross-sectional view taken along line AA of (a), (D) is a sectional view taken along line BB of (b), and (e) is an explanatory view showing an assembled state in a perspective view. FIG. 63 is an explanatory view showing the operating principle of the water sterilizer according to the present invention, wherein (a) shows the battery action when zinc magnesium alloy columns and stainless steel pipes are separately immersed in a beaker; ) Shows the battery action when the zinc-magnesium alloy column is dipped in a stainless steel cylinder inside the beaker via the inner isolation mesh cylinder. FIG. 64 schematically shows a state in which the test specimens 1 to 3 are immersed in a beaker in the sterilization effect confirmation test 1 of the water sterilization apparatus according to the present invention, and the results of measurement of viable bacteria in the bacterial liquid using the test specimens 1 to 3 Respectively. FIG. 65 schematically shows a state in which the test specimens 4 to 6 are immersed in a beaker in the sterilization effect confirmation test 2 of the water sterilization apparatus according to the present invention, and the result of measurement of viable bacteria in the bacterial liquid by the test specimens 4 to 6 Respectively. FIG. 66 schematically shows the state in which the test specimens 1 to 4 are immersed in a beaker in the noble metal hull test of the water sterilizer according to the present invention, and also shows their suitability. FIG. 67 is an explanatory view schematically showing a discoloration confirmation test 1 of the water sterilizer according to the present invention. FIG. 68 is an explanatory view schematically showing a discoloration confirmation test 2 of the water sterilizer according to the present invention. FIG. 69 is an explanatory view schematically showing a discoloration confirmation test 3 of the water sterilizer according to the present invention. FIG. 70 is an explanatory view schematically showing a discoloration confirmation test 4 of the water sterilizer according to the present invention. FIG. 71 is an exploded view showing the specimen used in the sterilization ability confirmation test of the water sterilizer according to the present invention as seen from the front. 72 shows the assembled state of the specimen of FIG. 71, (a) is a plan view, and (b) is a front view showing only the left half section in section. FIG. 73 is Table 1 showing the results of a 24-hour sterilization ability test of the water sterilizer according to the present invention. FIG. 74 is Table 2 showing the results of a weekly sterilization ability test of the water sterilizer according to the present invention. FIG. 75 shows the sterilization ability test results of various container water sterilizers according to the present invention as Table 3 and also shows a graph showing the change in the number of coliforms over time. FIG. 76 is Table 4 showing the antibacterial test results of the water sterilizer for single lever faucets according to the present invention. FIG. 77 is Table 5 showing the water quality test results (well water quality) before using the water sterilizer according to the present invention. FIG. 78 is Table 6 showing water quality test results (purified water quality) before using the water sterilizer according to the present invention. FIG. 79 is Table 7 showing water quality test results (purified water quality) using the water sterilizer for water purifiers (water purifier adapter) according to the present invention. FIG. 890 is a table 8 showing water quality test results (well water quality) using a drain adapter for a single lever faucet (3 mm hole diameter of flow rate adjusting plate) as a water sterilizer for well water according to the present invention. . FIG. 81 is a table 9 showing water quality test results (well water quality) using a drain adapter for a single lever faucet (pore diameter of flow rate adjusting plate: 4 mm) as a water sterilizer for well water according to the present invention. . FIG. 82 is a table 10 showing water quality test results (well water quality) using a drain adapter for a single lever faucet (pore diameter of flow rate adjusting plate: 5 mm) as a water sterilizer for well water according to the present invention. .

Explanation of symbols

Base metal body (first reactant): 12, 112, 212, 312, 412, 512, 612, 712, 716, 812, 912, 1012, 1112, 1212, 1312, 1412, 1512, 1612, 1712, 1812, 1912, 2012, 2112, 2212, 2312, 2412, 2512, 2612, 2712, 2812, 2912, 3012, 3112, 3212, 4112
Inner isolation mesh cylinder (spacing member): 13, 113, 213, 413, 513, 613, 713, 715, 813, 913, 1113, 1213, 1313, 1413, 1513, 1613, 1713, 1813, 1913, 2013, 2113, 2213, 2313, 2413, 2513, 2613, 2713, 2813, 4113
Noble metal body (second reactant): 14, 114, 214, 314, 414, 514, 614, 714, 718, 814, 914, 1014, 1114, 1214, 1314, 1414, 1514, 1614, 1714, 1814, 1914, 2014, 2114, 2214, 2314, 2414, 2514, 2614, 2714, 2814, 3314, 3414, 3514, 3614, 3714, 3814, 2914, 4014, 4114

Hereinafter, the best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described. Throughout each embodiment, the same members, elements, or parts are denoted by the same reference numerals, and redundant description thereof is omitted.

Embodiment 1
Hereinafter, the drain adapter as a water sterilizer according to Embodiment 1 of the present invention will be described. FIG. 1 is an exploded perspective view showing a drain adapter as a water sterilizer according to Embodiment 1 of the present invention. FIG. 2 is an assembly view showing a state in which each component is inserted and accommodated in the drainage housing of the drainage adapter as the water sterilizer according to Embodiment 1 of the present invention. FIG. 3 is an enlarged cross-sectional view showing a water draining adapter as a water sterilizing apparatus according to Embodiment 1 of the present invention and an attached state thereof. As shown in FIG. 3, the drain adapter according to the first embodiment is detachably attached to a short cylindrical attachment portion 42 formed on the lower surface side of the base end portion of the water discharge pipe 41. It is embodied in a drain adapter that is in watertight communication with the water passage in the water discharge pipe 41 through a circular opening at the lower end. The drain adapter according to the first embodiment includes a sterilization unit 10, a substantially cylindrical drain housing 20 that accommodates the sterilization unit 10 therein, and a drain cap 30 that fits into a lower end opening of the drain housing 20 in a water-tight manner. It consists of.

[Draining housing 20]
As shown in FIG. 1, the drainage housing 20 is obtained by applying nickel chrome plating or the like to the outer surface of a metal base such as a copper alloy such as brass, and at the upper end of a base 21 having a large diameter cylindrical shape. A male screw portion 22 having a small-diameter cylindrical shape is integrally formed. The upper end of the male screw portion 22 is an upper end opening 22a having a small diameter circle. The small-diameter circular cross-section space inside the male screw portion 22 communicates with the large-diameter circular cross-section space inside the base portion 21. By attaching the male screw on the outer peripheral surface of the male screw portion 22 to the female screw on the inner peripheral surface of the attachment portion 42 of the water spout pipe 41 of the faucet, the drain housing 20 is attached to the attachment portion 42. The water passage in the water discharge pipe 41 communicates with the internal space of the drainage housing 20 in a watertight manner. On the other hand, a male screw portion 23 is formed on the outer peripheral surface of the lower end portion of the base portion 21 of the drainage housing 20. The lower end of the male screw portion 23, that is, the lower end of the drainage housing 20 is a lower end opening 23a having a large-diameter circle. From the lower end opening 23a of the drainage housing 20, the flow rate adjusting plate 24 and the sterilization unit 10 can be accommodated in this order.

[Flow rate adjusting plate 24]
The flow rate adjusting plate 24 is made of a metal such as a copper alloy such as brass, and is a perforated disk body having a diameter (substantially the same diameter or slightly smaller diameter) corresponding to the inner peripheral portion of the upper end of the base portion 21 of the water draining housing 20. The flow rate adjusting plate 24 has a circular flow rate adjusting hole 24 a having a predetermined diameter formed in the center thereof and is accommodated in the inner periphery of the upper end of the base portion 21 so that the flow rate adjusting hole 24 a corresponds to the circular opening of the male screw portion 22. Be placed. As a result, the internal space of the base portion 21, the internal space of the male screw portion 22, and the internal water passage of the water discharge pipe 41 are connected in a watertight manner through the flow rate adjusting hole 24 a of the flow rate adjusting plate 24. Accordingly, the water flowing into the drainage housing 20 from the water discharge pipe 41 enters the internal space of the male screw portion 22, then passes through the flow rate adjusting hole 24 a of the flow rate adjusting plate 24 and enters the internal space of the base portion 21. Then, after refluxing the internal space of the base portion 21, it again passes through the flow rate adjusting hole 24 a of the flow rate adjusting plate 24 and returns from the internal space of the male screw portion 22 to the internal water passage of the water discharge pipe 41. Therefore, by increasing / decreasing the cross-sectional area by increasing / decreasing the hole diameter of the flow rate adjusting hole 24a of the flow rate adjusting plate 24 and / or changing the hole shape, The amount of water flowing into the drain housing 20 and the amount of water flowing out from the drain housing 20 into the water discharge pipe 41 can be adjusted. For example, a plurality of types of flow rate adjusting plates 24 having different hole shapes of the flow rate adjusting holes 24a are prepared in advance and replaced with the flow rate adjusting plate 24 having a desired hole shape. For example, if the flow rate adjustment hole 24a is replaced with a larger diameter, the water flow rate of the flow rate adjustment hole 24a increases, and if the flow rate adjustment hole 24a is replaced with a smaller diameter flow rate, the flow rate of the flow rate adjustment hole 24a decreases. By doing so, the amount of water flow can be adjusted into the water draining housing 20 by the flow rate adjusting plate 24. In addition, the flow rate adjusting hole 24a of the flow rate adjusting plate 24 has a different shape such as a polygonal shape in addition to the circular shape, and the cross-sectional area is similarly increased or decreased by changing the shape or size thereof, thereby adjusting the flow rate. Can also be done.

[Drain cap 30]
The drain cap 30 is obtained by applying nickel chrome plating or the like to the outer surface of a metal base such as a copper alloy such as brass. The drain cap 30 is integrated with the female screw portion 32 on the cap and the central portion of the lower end surface of the female screw portion 32. The bottomed cylindrical drainage portion 31 is formed. The female screw portion 32 has a shape corresponding to the outer peripheral surface of the lower end portion of the water draining housing 20, and the female screw on the inner peripheral surface is screwed to the male screw on the outer peripheral surface of the male screw portion 23 of the base portion 21 of the water draining housing 20. By doing so, the drain cap 30 is attached to the lower end of the drain housing 30. Accordingly, the internal space of the drainage portion 31 communicates with the internal space of the base portion 21 of the drainage housing 20 via the internal space of the female screw portion 32. At this time, the sterilization unit 10 is mounted in the drainage housing 20, and a ring-shaped packing 25 as a sealing material is interposed between the lower end of the sterilization unit 10 and the drainage cap 30, Watertightness with the drain cap 30 is maintained. The drain cap 30 can also have a normal drain function. The ring-shaped packing 25 maintains the water tightness between the drain housing 20 and the drain cap 30, and the drain portion 31. Thus, the water inside the base portion 21 is adjusted to the outside so that water can be drained.

[Sterilization unit 10]
The sterilization unit 10 includes an upper isolation screen 11, a base metal body 12, an inner isolation network cylinder 13, a noble metal body 14 as a first reactant, an outer isolation network cylinder 15, and a lower isolation network board 16. The base metal body 12 constitutes the first reactant of the present embodiment, has a predetermined ionization tendency (or standard electrode potential), and is made of a first metal that exhibits a bactericidal effect by metal ionization in water. . Further, the base metal body 12 is a second metal that constitutes the second reactant of the present embodiment and has a lower ionization tendency (or a higher standard electrode potential than the first metal) than the first metal, The surface of the first reactant has a facing surface arranged to face the entire main portion of the metal ion generation surface.

Specifically, the base metal body 12 has a simple cylindrical shape with a predetermined diameter made of a zinc alloy (or a zinc magnesium alloy) containing a predetermined content of magnesium, and has a predetermined cross-sectional shape throughout the length direction (axial direction). Length (height slightly smaller than the height of the internal space of the base portion 21 of the drainage housing 20 as the accommodating space (the total thickness of the flow rate adjusting plate 24, the upper isolation screen 11, the lower isolation screen 16, and the packing 25) Small height)) extended. The magnesium content relative to zinc is a factor that determines the elution amount of magnesium ions due to the battery action using the ionization tendency described later, and thus increases or decreases depending on the purpose of use, but as in this embodiment, drinking water In the case of a water supply device also used for the purpose, in order to ensure the elution amount of magnesium ions required to obtain the necessary sterilizing effect and to prevent the elution of excessive magnesium ions, the range is about 3 to about 8% It is preferable that Magnesium elution is not regulated according to the current water quality standards for tap water in Japan, but it is still about 5% considering excessive intake to the human body when citing tap water directly. More preferably.

The noble metal body 14 is made of stainless steel (preferably SUS304) with a predetermined diameter (the inner diameter is larger than the base metal body 12 by the thickness of the inner isolation mesh cylinder 13 and the outer diameter is outside the inner diameter of the base portion 21 of the water draining housing 20. It has a simple cylindrical shape with a small diameter corresponding to the thickness of the separating net cylinder 15 and extends in a predetermined length (the same height as the base metal body 12) with the same cross-sectional shape over the entire length direction (axial direction). In addition, since the kind of metal of the noble metal body 14 is a factor that determines the elution amount of zinc ions and magnesium ions from the base metal body 12 due to the battery action using the ionization tendency, a metal having a smaller ionization tendency than the base metal body 12 ( As long as it includes an alloy), any material such as gold, platinum, silver, copper, tin, nickel, etc. can be used. In the case of equipment, the amount of metal ions (zinc ions and magnesium ions) required to obtain the necessary bactericidal effect is secured, and water quality deterioration due to surface oxidation of the noble metal body 12 (red rust in the case of iron, etc.) In order to prevent this, it is preferable to use stainless steel (SUS304 or the like) having excellent corrosion resistance and discoloration resistance. For example, titanium or titanium alloy is also a noble metal body with respect to zinc-magnesium alloy, but compared to stainless steel, an oxide film is easily formed on the surface due to dissolved oxygen in water with use, and an oxide film is formed. Then, since the battery action with respect to the base metal body 12 is reduced and the desired metal ions are not eluted from the base metal body 12, the present inventors have stated that stainless steel is most preferable as the type of the noble metal body 14. Has been confirmed by experiments.

The upper isolation mesh plate 11 has a net-like disk shape with substantially the same diameter as the flow rate adjusting plate 24, and has a large number of small holes 11a penetrating in the thickness direction over the entire surface. Further, the upper isolation screen 11 is formed in a normal net-like or net-like disk shape in which a large number of linear portions are arranged in a crossing manner by a predetermined electrically insulating material or non-conductive material made of synthetic resin such as polypropylene. However, the tops of all or part of the linear portions are formed to be linear (one-dimensional) support lines 11b on the upper and lower surfaces. Thereby, the upper and lower surfaces of the upper isolation screen 11 are connected to the lower surface of the upper flow rate adjusting plate 24 and the lower base metal body 12 which are members facing each other only through the support line 11b of the linear portion. The upper end surface and the upper end surface of the noble metal body 14 are entirely in contact (line contact) only with a line without even partly contacting the surface. Accordingly, the size of the contact area between the upper and lower surfaces of the upper isolation screen 11, the lower surface of the upper flow rate adjusting plate 24, the upper end surface of the lower base metal body 12, and the upper end surface of the noble metal body 14 is substantially zero. can do.

The inner separating net cylinder 13 constitutes the interval holding member of the present embodiment, and the base metal body 12 and the noble metal body 14 are in contact with each other over the entire surface and at least uniform in the entire length direction thereof. It is made of an electric insulator that is held fixedly (that is, cannot be moved unless an unintended external force is applied to each other) in a state where the gaps are arranged to face each other with a small gap space between . Specifically, the inner isolation mesh tube 13 is formed with a small gap formed between the base metal body 12 and the noble metal body 14 when the base metal body 12 is coaxially arranged with the height of the internal space of the noble metal body 14. It has a cylindrical shape with the same shape as the gap space. That is, the inner diameter of the inner isolation mesh cylinder 13 is substantially the same as the outer diameter (diameter) of the base metal body 12, and the outer diameter of the inner isolation mesh cylinder 13 is substantially the same as the inner diameter of the noble metal body 14. Is substantially the same as the height of the base metal body 12 and the noble metal body 14 (substantially the same is a slight dimensional error due to a manufacturing error or the like, or it is completely the same by intentionally making the dimensions slightly different. It means not.) The inner isolation net cylinder 13 has a large number of small holes 13a penetrating in the thickness direction over the entire surface. The inner isolation mesh cylinder 13 is formed in a normal net-like or net-like cylindrical shape in which a large number of linear portions are arranged in an intersecting manner using the same electrically insulating material as the upper isolation mesh plate 11. On the surface side and the outer peripheral surface side, the tops of all or part of the linear portions are formed to be linear (one-dimensional) support lines 13b. As a result, the inner peripheral surface and the outer peripheral surface of the inner isolation net tube 13 are formed only on the outer peripheral surface of the base metal body 12 and the inner surface of the noble metal body 14 which are members facing each other only through the support line 13b of the linear portion. The entire surface is brought into contact (line contact) only with a line without surface contact even with a part of the surface. Therefore, the size of the contact area between the inner peripheral surface and the outer peripheral surface of the inner separating net cylinder 13 and the outer peripheral surface of the base metal body 12 and the outer peripheral surface of the noble metal body 14 can be made substantially zero. The inner isolation mesh cylinder 13 is not only integrally formed in the above-described cylindrical shape, but is also formed by forming a rectangular sheet-like mesh plate having the same circumferential length, and then circulating the same into a cylindrical shape. It can also be set as the isolation net cylinder 13.

The outer isolation mesh cylinder 15 is a net-like cylindrical shape that covers the entire outer peripheral surface of the noble metal body 14 so that the entire outer peripheral surface of the noble metal body 14 is not in contact with the inner peripheral surface of the base 21 of the drainage housing 20. Make. Specifically, the outer isolation mesh cylinder 15 has a small gap formed between the noble metal body 13 and the base portion 21 when the noble metal body 14 is coaxially arranged with the height of the inner space of the base portion 21. It has the same cylindrical shape as the space. That is, the inner diameter of the outer isolation mesh cylinder 15 is substantially the same as the outer diameter of the noble metal body 14, the outer diameter of the outer isolation mesh cylinder 15 is substantially the same as the inner diameter of the base 21, and the height of the outer isolation mesh cylinder 15 is The height of the noble metal body 14 is substantially the same. The outer isolation net cylinder 15 has a large number of small holes 15a penetrating in the thickness direction over the entire surface. Further, the outer isolation mesh cylinder 15 is formed in a normal net-like or net-like cylindrical shape in which a large number of linear portions are cross-disposed by the same electrically insulating material as that of the upper isolation mesh plate 11. On the surface side and the outer peripheral surface side, like the inner isolation mesh cylinder 13, the tops of all or part of the linear portions are formed to be linear (one-dimensional) support lines 15 b. As a result, the outer peripheral surface and the outer peripheral surface of the outer isolation mesh cylinder 15 are connected to the outer peripheral surface of the noble metal body 14 and the inner periphery of the base portion 21 only through the support portions 15b of the linear portions that are linear. The entire surface is brought into contact with only a line (line contact) without contacting even part of the surface. Therefore, the size of the contact area between the inner peripheral surface and outer peripheral surface of the outer isolation net cylinder 15 and the outer peripheral surface of the noble metal body 14 and the outer peripheral surface of the base portion 21 can be made substantially zero. As a result, a small gap space is formed between the noble metal body 14 and the base portion 21 so as to be uniform over the entire length direction of the noble metal body 14. It is held inside the base 21 in a state where it is disposed so as to face the inner peripheral surface of the base 21 with a space. Here, the outer isolation mesh cylinder 15 has a net-like shape (corresponding to the upper isolation mesh plate 11 and the lower isolation mesh plate 16), in addition to being integrally formed in the cylindrical shape. The cylindrical portion is closed and the center in the axial direction of the cylindrical portion is cut to form a pair of (half length) bottomed cylindrical bodies, and the base metal body 12 is held and fixed inside by the inner isolation mesh cylinder 13. A pair of bottomed cylindrical bodies may be covered from both upper and lower sides of the noble metal body 14 so that the outer peripheral surface and the upper and lower end faces of the noble metal body 14 are completely covered.

The lower isolation screen 16 has the same configuration as the upper isolation screen 11. That is, the lower isolation screen 16 is formed in the same shape as the upper isolation screen 11 in the shape of a net-like disk with the same material as the upper isolation screen 11, and has a large number of small holes penetrating in the thickness direction over the entire surface. 16a. Further, support lines 16b similar to the support lines 11b are provided on the upper and lower surfaces of the lower isolation screen 16. As a result, the upper and lower surfaces of the lower isolation screen 16 are connected to the lower end surface of the upper base metal body 12, the lower end surface of the noble metal body 14 and the lower packing 25 (when the packing 25 is omitted) through only the support line 16b. The entire inner surface of the drain cap 30 is in contact with only a line (line contact) without being in surface contact with any part. Therefore, the size of the contact area between the upper surface of the lower isolation screen 16 and the lower end surface of the upper base metal body 12 and the lower end surface of the noble metal body 14 can be made substantially zero. In addition, the contact area with the packing 25 of the lower side separation screen plate 16 is also substantially zero by the support line 16b on the lower surface.

Here, the upper isolation screen 11, the inner isolation screen cylinder 13, and the lower isolation screen 16 are brought into contact with each other by surface contact with the surfaces (upper surface, outer peripheral surface, and lower surface) of the base metal body disposed inside thereof. One of the objects is to prevent discoloration due to oxidation (black discoloration due to magnesium oxide precipitation), which will be described later, and in this sense, the support wires 11b, 14b, and 16b are provided. Support lines 11b, 13b, 16b on the side not facing the body 12, that is, support lines 11b on the upper surface side of the upper isolation mesh plate 11, the outer peripheral surface side of the inner isolation mesh tube 13, and the lower surface side of the lower isolation mesh plate 16. 13b and 16b may be omitted. However, in particular, the inner isolation mesh cylinder 13 also has an effect of greatly increasing the facing area of the base metal body 12 with respect to the noble metal body 14 (by reducing the contact area by lines compared to the case of surface contact). The support wire 13b is also provided on the outer peripheral surface side, the contact area with the inner peripheral surface of the noble metal body 14 (covering area by the contact portion) is also reduced, and the total facing area with the outer peripheral surface of the base metal body 12 is increased. This is preferable in terms of uniform elution and elution amount of metal ions from the base metal body 12. Further, since the upper end surface of the base metal body 12 faces the metal flow rate adjustment plate 24 via the upper isolation mesh plate 11, if the flow rate adjustment plate 24 is formed of a noble metal rather than the base metal body 12, the base metal body. From this point, a support wire 11b is also provided on the upper side of the upper isolation screen 11 so that the flow rate adjustment plate 24 for the base metal body 12 can be expected. It is preferable to increase the facing area. Similarly, when the packing 25 is omitted, the lower end surface of the base metal body 14 is opposed to the metal drain cap 30 via the lower isolation mesh plate 16, so that the drain cap 30 is more noble than the base metal body 12. If it is formed of a simple metal, a battery action between the lower end surface of the base metal body 12 and the drain cap 30 can be expected. From this point, the support line 11b is also provided below the lower isolation screen 16. It is preferable to increase the facing area of the drain cap 30 with respect to the base metal body 12. In addition, since it is thought that the outer peripheral surface of the noble metal body 14 is less involved in the battery action with the base metal body 12 than the inner peripheral surface, the inner peripheral surface side and the outer peripheral surface of the outer isolation mesh cylinder 15 are considered. The side support line 15b may be omitted. However, since the outer peripheral surface of the noble metal body 14 is opposed to the metal base 21 via the outer isolation net cylinder 15, if the base 21 is formed of a noble metal further than the noble metal body 14, Since elution of metal ions from the noble metal body 14 due to the battery action between the surface and the inner peripheral surface of the base portion 21 can be expected, if the noble metal body 14 can be made of a metal that exhibits a bactericidal effect, it is isolated outside. It is preferable to provide support lines 15b on the inner peripheral side and the outer peripheral side of the net tube 15 to increase the facing area between the noble metal body 14 and the base portion 21.

By the way, the support lines 11b, 13b, etc. of the upper isolation screen 11 and the inner isolation screen cylinder 13 are configured as, for example, support lines 11b, 13b, etc. constituted by contact lines of linear portions having a small circular cross section. (See FIG. 3, FIG. 4, etc.), or can also be configured as support lines 11b, 13b, etc. composed of contact lines (contact lines by crossing angles) of the linear portions of the small diamond cross section (see FIG. 3). 32, FIG. 33 etc.). Alternatively, at the intersections of a large number of linear portions of the mesh constituting the upper isolation mesh plate 11 and the inner isolation mesh cylinder 13 etc., projections with hemispherical projections (hemispherical projections, conical projections, pyramidal projections) The base metal body 12 or the noble metal body 14 may be supported by point contact at the multiple support points. In this case, since the contact area can be further reduced to substantially zero as compared with the case of the linear support lines 11b, 13b, etc., the point of support can be made to be more dotted than the linear support line. More preferred.

[Assembly method]
As shown in FIG. 2, in the drain adapter of the first embodiment, the flow rate adjusting plate 24 is first accommodated and arranged from the circular opening at the lower end of the base 21 of the drain housing 20 and the flow rate adjusting hole 24a is provided. The upper screw 22 is communicated with the upper end opening 22 a, and then the upper isolation screen 11 is accommodated and overlapped on the lower surface side of the flow rate adjusting plate 24. On the other hand, the base metal body 12 is inserted into the inner isolation net cylinder 13 and completely accommodated, and the inner isolation net cylinder 13 in that state is inserted into the noble metal body 14 and completely accommodated. Thereby, the base metal body 12 and the noble metal body 14 are arranged coaxially with each other by the inner isolation net tube 13, and the outer peripheral surface of the base metal body 12 and the inner peripheral surface of the noble metal body 14 are in the uniform gap space. Are maintained in a state of being opposed to each other via, and integrated. Next, the noble metal body 14 in this state is inserted into the outer isolation net cylinder 15 and completely accommodated, and the base metal body 12 and the inner isolation net cylinder which are not easily separated unless an external force is intentionally applied to each other. 13, an integrated product of the noble metal body 14 and the outer isolation mesh cylinder 15 is formed, and these integrated products are inserted into the base 21 and completely accommodated, and integrated with the lower surface of the upper isolation mesh plate 11. The base metal body 12, the inner isolation net cylinder 13, the noble metal body 14, and the outer isolation net cylinder 15 are arranged in contact with each other. Next, the lower isolation mesh plate 16 is accommodated in the base 21 and placed in contact with the respective lower ends of the integrated base metal body 12, inner isolation net cylinder 13, noble metal body 14 and outer isolation net cylinder 15. At this time, the sterilization unit 10 may be accommodated in the base 21 in an assembled state in advance. For example, the upper isolation screen 11 and the lower isolation screen 16 can be detachably attached to the upper and lower ends of the outer isolation screen cylinder 15 (for example, the upper and lower circular openings in the form of a disc having the same diameter as the inner diameter of the outer isolation screen cylinder 15) As a configuration in which the upper isolation screen 11 and the lower isolation screen 16 are integrated together, they may be accommodated in the base 21. Alternatively, the upper isolation screen 11 or the like is formed of polypropylene (PP) or the like, and the upper isolation screen 11 and the lower isolation screen 16 are integrally formed at the upper and lower ends of the outer isolation screen cylinder 15 so as to be openable and closable by PP hinges or the like. Thus, the entire configuration may be integrated. Next, the packing 25 is accommodated in the female screw portion 32 of the drain cap 30, and the drain cap 30 is screwed onto the base portion 21 and attached. Note that the lower isolation screen 16 may be placed on the packing 25 at this time and placed in contact with the base metal body 12 or the like when the drain cap 30 is attached to the base 21. As a result, as shown in FIG. 3, a drainage adapter is obtained in which the sterilization unit 10 is housed in the drainage housing 20 and the lower end is closed by the drainage cap 30. This drainage adapter is attached to the water discharge pipe 41 by screwing the female screw part 22 with the O-ring 26 on the exterior into the attachment part 42 of the water discharge pipe 41.

[Function and effect]
At this time, the water flow path inside the water discharge pipe 41 communicates with the sterilization unit in the internal space of the base portion 21 of the drainage adapter via the flow rate adjustment hole 24a of the flow rate adjustment plate 24. In this state, as shown in FIG. 4, when the handle 43 of the single lever faucet 40 as an example of the water supply device is opened and water is passed through the water discharge pipe 41, the water flow W in the water flow path is the flow rate adjusting plate 24. Flows into the base 21 of the drainage housing 20 only through the flow rate adjusting hole 24a, and flows into the sterilization unit 10 disposed inside the base 21. That is, the water flow W passes through the small holes 11 a of the upper isolation net 11 of the sterilization unit 10 and enters the gap space between the base metal body 12 and the noble metal body 14 from the upper end side. At this time, the inner isolation net cylinder 13 is interposed between the base metal body 12 and the noble metal body 14, but the inner isolation net cylinder 13 is only in line contact with the base metal body 12 and the noble metal body 14 by the support line 13b. Therefore, the water flow W easily passes between the support line 13b and the contact surface, and uniformly spreads and enters the entire gap space between the base metal body 12 and the noble metal body 14. In addition, if it comprises so that the inner side isolation | separation net | network cylinder 13 may make point contact with the base metal body 12 and the noble metal body 14 by a support point as mentioned above, the water flow W will pass between support points without any obstruction, and a base metal The entire gap space between the body 12 and the noble metal body 14 spreads more rapidly and uniformly. When the gap W between the base metal body 12 and the noble metal body 14 is filled with the water flow W, the battery action (corrosion battery action by the macro battery or the local battery) due to the ionization tendency between the base metal body 12 and the noble metal body 14. ), The metal ions of the base metal body 12 are released from the outer peripheral surface of the base metal body 12 toward the inner peripheral surface of the noble metal body 14 and are eluted into the water flow W. The metal ions are composed of zinc ions (Zn ions) of the zinc alloy and magnesium ions (Mg ions) added to the zinc alloy. At this time, the entire outer peripheral surface of the base metal body 12 and the entire inner peripheral surface of the noble metal body 14 are electrically insulated by the inner isolation mesh tube 13 and are in a non-contact state with a minute gap space therebetween. The entire space is opposed and the thickness of the gap space is uniform (identical) in any direction such as the length direction (axial direction) and the outer circumferential direction of the base metal body 12 and the noble metal body 14. The state is ensured by the inner separating net cylinder 13 and does not collapse at all. Accordingly, only completely ionized Zn ions and Mg ions are eluted from the base metal body 12, and powdered or granular metals (such as zinc alloy particles) that are not ionized are released into the water flow W, resulting in water quality deterioration and the like. There is nothing. In addition, only Zn ions and Mg ions, which have a much stronger sterilization effect than powdered metal, are eluted from the base metal body 12 into the water flow W to give the water flow W a powerful sterilization function. can do. In other words, Zn ions and Mg ions are specific metal ions having a bactericidal action in water. In particular, since Mg ions have a strong bactericidal action, they are passed by Zn ions and Mg ions eluted in the water flow W. Various bacteria such as general bacteria and Escherichia coli in water W can be sterilized and can be sterilized. In this regard, it has been confirmed by experiments of the inventors that the sterilizing effect and the sterilizing effect are exhibited not only in the case of stored water but also in the case of continuous water flow or transient water. Therefore, sterilization and sterilization in the water flow W (raw water or tap water) can be performed with the eluted metal ions, and zinc ions and magnesium ions as minerals are eluted in the water and taken when drunk. It is also possible to replenish the person with those minerals. Moreover, since magnesium ion is an essential nutrient for plants, the growth of the plant can be promoted by spraying the plant with water flow 2 in which metal ions are dissolved.

Here, “sterilization” means “antibacterial / antifungal” that prevents or prevents the growth of fungi (including all microorganisms such as bacteria and fungi), and kills or removes all fungi However, according to the sterilization unit 10 of the present embodiment, as will be described later, not only the staying water in the water discharge pipe 41 but also the water discharge cap 50 is used. The inventors have confirmed through experiments that a sterilizing effect can be exerted even on transient water (water having a constant flow rate and water flow) from the water outlet. Moreover, when the water flow W in which Zn ions and Mg ions are dissolved as described above is sprayed not only on the bactericidal function but also on plants such as flower beds, vegetable gardens, fields, etc., the mechanism is not clear at present, but the insecticidal effect The inventors have confirmed through experiments that the present invention also exhibits a pest repellent effect.

After that, the water W as functional water or ionic water to which various functions such as sterilization function are given by elution of metal ions is isolated from the lower end of the gap space between the base metal body 12 and the noble metal body 14. After passing through the small hole 16a of the mesh plate 16 and flowing from the inner peripheral side to the outer peripheral side along the inner bottom surface of the female screw portion 32 of the packing 25 and the drain cap 30, the inner side along the inner peripheral surface of the base portion 21 is flown. Flows from the lower end to the upper end of the peripheral surface, and further flows from the outer periphery of the inner top surface of the base 21 along the lower surface of the flow rate adjusting plate 24 on the inner top surface from the outer peripheral side to the inner peripheral side to reach the flow rate adjusting hole 24a. It returns to the water flow path in the water discharge pipe 41 through the female screw portion 22 from the flow rate adjusting hole 24a. At this time, a part of the water flow W passes between the upper support line 16b of the lower isolation screen 16 and the lower end surface of the noble metal body 14 (due to the ease of passage by the above-described line contact), and the outside. It passes between the support line 15b on the inner peripheral side of the separating net cylinder 15 and the outer peripheral surface of the noble metal body 14, and between the lower support line 11b on the upper isolation net plate 11 and the upper end face of the noble metal body 14. Pass through. That is, the lower isolation mesh cylinder 16, the outer isolation mesh cylinder 15, and the upper isolation mesh plate 11 are all in contact with each other only by line contact (or point contact) between the inner and outer members and the support wires 16b, 15b, and 11b. Since there is almost no resistance to passage of the water W, the water flow W from the gap space between the base metal body 12 and the noble metal body 14 is between the lower end surface of the noble metal body 14 and the inner bottom surfaces of the packing 25 and the drain cap 30. A gap space between the outer peripheral surface of the noble metal body 14 and the inner peripheral surface of the base portion 21, and a gap space between the upper end surface of the noble metal body 14 and the inner top surface of the base portion 21 and the lower surface of the flow rate adjusting plate 24. However, a substantially continuous water flow path is formed regardless of the presence of the lower isolation net cylinder 16 or the like, and the water flow W smoothly flows along this water flow path. In this way, the water passage through the gap space between the base metal body 12 and the noble metal body 14, the gap space between the lower end surface of the noble metal body 14 and the inner bottom surface of the packing 25 and the drain cap 30, noble metal A water passage including a clearance space between the outer peripheral surface of the body 14 and the inner peripheral surface of the base portion 21 and a clearance space between the upper end surface of the noble metal body 14 and the inner top surface of the base portion 21 and the lower surface of the flow rate adjusting plate 24. Thus, a circulation path is formed in which the water flow W that has entered from the flow rate adjustment hole 24a of the flow rate adjustment plate 24 recirculates to the flow rate adjustment hole 24a. Contrary to the above, the water flow W that has entered from the flow rate adjusting hole 24a of the flow rate adjusting plate 24 flows from the upper end of the noble metal body 14 to the outer peripheral surface side, and between the base metal body 12 and the noble metal body 14 from the lower end side. It is also assumed that a circulation path enters the clearance space between the base metal body 12 and the noble metal body 14 and returns to the flow rate adjustment hole 24a of the flow rate adjustment plate 24 from the upper end side of the clearance space. Alternatively, it can be considered that the above-described two kinds of circulation paths are partially mixed and the water flow W that has entered from the flow rate adjusting hole 24a of the flow rate adjusting plate 24 is returned to the flow rate adjusting hole 24a again.

The water W (ionic water) recirculated into the water discharge pipe 41 as described above is discharged as water discharge W from the water discharge port of the water discharge cap 40 at the tip of the water discharge pipe 41. And Mg ions are dissolved.

In the recirculation operation of the water flow W, as described above, the water flow allowance is increased / decreased by increasing / decreasing the diameter of the flow rate adjusting hole 24a of the flow rate adjusting plate 24 to be used, and water is discharged from the water discharge pipe 41. The amount of water that flows into the sterilization unit 10 in the extraction housing 20 and recirculates into the water discharge pipe 41 can be adjusted. That is, by adjusting the amount of reflux of the water W as the functional water from the sterilization unit 10, in particular, the amount of dissolved metal ions required by water quality standards such as laws and regulations (especially the current regulation upper limit is 0.97 mg). Elution amount of Zn ions / ml) can be reliably suppressed below the standard. That is, by changing the hole shape (hole diameter or hole shape) of the flow rate adjustment hole 24a of the flow rate adjustment plate 24, the inflow amount of the water flow W entering the sterilization unit 10 from the flow rate adjustment hole 24a is adjusted, Moreover, the outflow amount (inflow amount into the water discharge pipe 41) of the water flow W containing the metal ions eluted from the base metal body 12 from the flow rate adjusting hole 24a can be adjusted. Therefore, the flow rate adjusting plate 24a can reliably control the metal ions in the water flow W to be equal to or less than the reference values of Zn and Mg contents based on the quality standards of drinking water such as tap water and purified water.

In addition, since the base metal body 12 and the noble metal body 14 are held at regular intervals by line contact or point contact by the inner isolation mesh tube 13, only Zn ions and Mg ions, which are metal ions, are eluted from the base metal body 12. In addition, granular or powdery metal (Zn or Mg) does not flow out. Moreover, since the base metal body 12 and the noble metal body 14 are in direct contact and do not scrape each other by rubbing, as in the case of applying the technique of Patent Document 1, also in this respect, the powder metal is It can be surely prevented from flowing out.

By the way, in the said embodiment, a space | interval holding member consists of an electrically insulating resin material (The normal resin material is equivalent and says arbitrary things other than an electrically conductive resin material.), And the base metal body 12 and the noble metal body 14 A uniform thickness corresponding to the entire shape of the gap space between the outer peripheral surface and the contact point on the outer peripheral surface side, which is the upper limit of the thickness (the distance between the contact point on the inner peripheral surface side is the same throughout) An inner isolation net cylinder 13 having a net-like cylindrical portion, and the inner peripheral surface side of the cylindrical portion is in contact with the outer peripheral surface of the base metal body 12 in a dotted or linear manner throughout (on the outer peripheral surface side) A hemispherical or pin-like protrusion-like contact portion to make point contact, or a rib having a linear top portion to make contact linearly) and its cylindrical portion The outer peripheral surface side of the second reactant is the entire inner peripheral surface of the second reactant. In contact with each other in a linear or linear manner to form and maintain a uniform space between the first reactant and the second reactant. In addition to this configuration, a uniform space is formed. As long as it can be held, only two points or two points in the axial direction of the gap space between the base metal body and the noble metal body (for example, two locations of the upper end portion and the lower end portion, two locations of the upper end portion and the central portion, and the lower end portion) It can be set as another structure, such as setting it as the structure which supports two places of a center part. Also, for example, the inner isolation mesh cylinder 13 has a shape other than a cylindrical shape as long as the base metal body 12 and the noble metal body 14 supported in contact with the inner peripheral surface and the outer peripheral surface are isolated so as not to be in direct contact with each other. For example, it may be a cylindrical body having a planar C shape with a part of the cylindrical shape cut out in the length direction or a cylindrical body having a planar polygonal shape. You may make it wind around an outer peripheral surface in a coil shape. Similarly, as long as the noble metal body 14 and the drainage housing 20 supported in contact with the inner peripheral surface and the outer peripheral surface of the outer isolation mesh cylinder 15 are isolated so as not to be in direct contact with each other, the outer isolation net tube 15 is changed to various shapes. Can do. In addition, when the inner side isolation | separation net | network pipe | tube 13 is made into the cylinder which notched partially as mentioned above, it makes it a planar circular cylinder by bending the whole through a notch, or it expands a notch part and has a large diameter. Or a flat C-shaped cylindrical body.

Further, the upper isolation mesh plate 11 is separated from the upper end or the outer isolation inside the base portion 21 of the drainage housing 20 from the flow rate adjustment plate 24 to the drainage housing 20 as long as the base metal body 12 and the noble metal body 14 are isolated so as not to directly contact the flow rate adjustment plate 24. The shape can be a shape other than a circle having a diameter corresponding to the upper end of the mesh tube 15. For example, the shape may be a polygonal shape such as a rectangular shape or a pentagonal shape, an elliptical shape, or a design shape such as a star shape. Similarly, the shape of the lower isolation mesh plate 16 can be changed as long as the base metal body 12 and the noble metal body 14 are isolated so as not to directly contact the flow rate adjusting plate 24.

By the way, in Embodiment 1, the sterilization unit 10 has an isolation net (upper side) on the surface so that the base metal body 12 and the noble metal body 14 are not in direct contact with other members (drainage housing 20, flow rate adjusting plate 24, packing 25). The isolation net plate 11, the inner isolation net cylinder 13, the outer isolation net cylinder 15, and the lower isolation net plate 16) are provided, but the size and shape of the sterilization unit 10 are the dimensions corresponding to the internal shape of the drainage housing 20. -It is a shape and what is necessary is just a dimension and a shape accommodated in the whole drainage housing 20. For example, the base metal body 12, the inner isolation net cylinder 13, the noble metal body 14, and the outer isolation net cylinder 15 are slightly smaller in height than the internal space of the drainage housing 20 (height that is lower than the upper and lower isolation net plates 11, 16). In addition, the outer diameter of the outer isolation net cylinder 15 and the diameters of the upper isolation net plate 11 and the lower isolation net plate 16 can be made to correspond to the inner diameter of the base portion 21 of the drainage housing 20.

Embodiment 2
Hereinafter, the drain adapter as a water sterilizer according to Embodiment 2 of the present invention will be described. As shown in FIG. 5, the water sterilizer according to the second embodiment is embodied in a water drain adapter similar to that of the first embodiment. The water draining adapter according to the second embodiment includes a sterilization unit 10, a substantially cylindrical housing 20 that houses the sterilization unit 10, and a cap 130 that fits watertightly into the lower end opening of the housing 20. Unlike the first embodiment, the configuration of the cap 130 is mainly different.

The housing 20 is made of a metal such as a copper alloy (nickel chrome plating). Like the drainage housing 20, a male screw portion 22 on a small-diameter cylinder is integrally formed on the upper end of a cylindrical base portion 21. A circular upper end opening 22a is formed at the upper end. On the other hand, the lower end of the base portion 21 of the housing 20 is a large-diameter circular opening, and the flow rate adjusting plate 24 and the sterilization unit 10 similar to those in the first embodiment can be sequentially accommodated from the lower end opening 21a, and The male screw portion 23 is integrally formed, and the cap 130 is screwed and attached. As in the case of the first embodiment, the housing 20 can be attached by screwing the drain cap 30 into the male screw portion 123 instead of the cap 130.

The cap 130 is made of a metal such as a copper alloy (nickel chrome plating), and includes only a bottomed cylindrical female screw portion 132 unlike the drain cap 30 of the first embodiment. The female screw portion 132 has a shape corresponding to the outer peripheral surface of the lower end portion of the housing 120 and forms a female screw that is screwed into the male screw portion 23 on the inner peripheral surface of the side wall. Thereby, after mounting the sterilizing unit 10 in the housing 20, the female screw part 132 interposes the packing (seal material) 25 and closes the lower end opening 23 a of the housing 20 in a watertight manner. At this time, a seal (sealing material) 25 is interposed between the lower isolation screen 16 and the cap 130, so that the space between the cap 130 and the lower end of the base portion 21 of the housing 20 is sealed in a watertight manner.

Further, the sterilization unit (upper isolation net plate 11, base metal body 12, inner isolation net cylinder 13, noble metal body 14, outer isolation net cylinder 15, lower isolation net plate 16) 10 is the same as in the first embodiment. Is mounted in the housing 120.

[Assembly method]
Next, a method for assembling a drainage adapter as a water sterilizer according to Embodiment 2 of the present invention will be described.
As shown in FIG. 6, first, the flow rate adjusting plate 24 is inserted into the housing 20 and disposed on the inner upper end surface of the base portion 21, and then the sterilization unit (upper isolation net plate 11, base metal body 12, inner isolation netting). The cylinder 13, the noble metal body 14, the outer isolation net cylinder 15, and the lower isolation net plate 16) 10 are inserted and accommodated in the housing 120. At this time, you may accommodate in the housing 20 in the state which assembled the sterilization unit 10 whole. Alternatively, each component may be individually accommodated and assembled in the housing 20. In this case, for example, the upper isolation mesh plate 11 is first accommodated in the housing 20 and superimposed on the flow rate adjusting plate 24, and then the outer isolation mesh cylinder 15 is accommodated in the housing 20. Next, after inserting the noble metal body 14 into the outer isolation net cylinder 15, the inner isolation net cylinder 13 is inserted into the noble metal body 14, and then the base metal body 12 is inserted into the inner isolation net cylinder 13. Finally, the lower isolation screen 16 is accommodated in the housing 20, and the cap 130 having the packing 25 disposed on the inner bottom surface is screwed into the housing 20 to hold the sterilization unit 10 in the housing 20.

[Mounting to the water discharge pipe]
As shown in FIG. 7, the sterilization unit 10 is assembled and accommodated in the housing 20, and the male screw portion 22 of the housing 20 is connected to the water discharge pipe in a state where the cap 130 is screwed and held in the housing 20 (closed state). 41 is attached by screwing to a mounting portion 42 formed on the lower surface of the base end portion of 41. A female screw corresponding to the male screw of the male screw portion 22 is formed on the inner peripheral surface of the mounting portion 42. The O-ring 26 is attached to the outer peripheral surface of the base end of the male screw part 22, and the housing 20 is detachably attached to the base end part of the water discharge pipe 41 by screwing the male screw part 22 to the attachment part 42 in this state. The internal sterilization unit 10 communicates with the water passage in the water discharge pipe 41 only through the flow rate adjusting hole 24a of the flow rate adjusting plate 24.

[Operation and effect of sterilization unit]
Hereinafter, the operation and effect of the sterilization unit of the drain adapter as the water sterilizer according to Embodiment 2 of the present invention will be described.
When raw water (tap water) W flows through a water passage in the water discharge pipe 41, the raw water W passes through a circular opening at the base end of the male screw portion 22 of the housing 20 from a circular opening at the base end of the mounting portion 42, and a flow rate adjusting plate. 24, and enters the sterilization unit 10 through the flow rate adjusting hole 24a of the flow rate adjusting plate 24. After entering, the raw water W enters the gap between the outer peripheral surface of the base metal body 12 and the inner peripheral surface of the noble metal body 14 through the numerous small holes 11a of the upper isolation screen 11. At this time, although the inner isolation net cylinder 13 is interposed between the base metal body 12 and the noble metal body 14, since it contacts with them in a linear or dotted manner, the raw water W enters the gap between the tangent lines or between the contact points. . In addition, the raw water W also enters the numerous small holes 13 a of the inner isolation screen 13. Thus, the raw water W enters the entire area between the outer peripheral surface of the base metal body 12 and the inner peripheral surface of the noble metal body 14. At this time, due to a difference in ionization tendency (potential difference) between the base metal body 12 and the noble metal body 14, a local battery is formed between the base metal body 12 and the noble metal body 14 via raw water, and so-called corrosion battery action (sacrificial corrosion protection). Due to the action, metal ions (Zn ions and Mg ions) are eluted from the base metal body 12 into the raw water W. The elution metal ions sterilize the raw water W and replenish minerals. Therefore, the same operation and effect as the drainage adapter as the water sterilizer according to Embodiment 1 can be obtained.

Embodiment 3
Hereinafter, the water outlet adapter as the water sterilizer according to Embodiment 3 of the present invention will be described. As shown in FIGS. 8 to 11, the water sterilizer according to Embodiment 3 is detachably attached to the water outlet on the lower surface side of the tip of the water discharge pipe 41, and the water sterilizer in the water discharge pipe 41 is inserted through the water outlet. It is embodied in a spout adapter that discharges water in fluid communication with the water channel. The water outlet adapter of the third embodiment includes a sterilization unit 210, a strainer 225, and a substantially cylindrical water discharge cap 250 that accommodates the sterilization unit 210 and the strainer 225 therein.

[Water discharge cap 250]
The water discharge cap 250 is made of a metal such as a copper alloy such as brass whose outer surface (design surface) is plated with nickel chrome. 213, the noble metal body 214, the outer isolation net cylinder 215, and the lower isolation net plate 216) 210 are accommodated inside, so that the height is set higher than that of a normal water discharge cap. The water discharge cap 250 is attached to the water discharge cap attachment 44 at the tip of the water discharge pipe 41 in a watertight manner via the packing 224. The strainer 225 is a strainer of a general water discharge cap and has a net-like shape made of metal such as plus chic or stainless steel.

[Sterilization unit 210]
As shown in FIG. 8, the sterilization unit 210 includes a base metal body 212 as a first reactant and a noble metal body 214 as a second reactant, and each of the base metal body 212 and the noble metal body 214 has other members (packing). 224, strainer 225, water discharge cap 250) are provided on the surface with an isolation net (upper isolation net 211, inner isolation net cylinder 213, outer isolation net cylinder 215, lower isolation net 216). The size and shape of the sterilization unit 210 (upper isolation net plate 211, base metal body 212, inner isolation net cylinder 213, noble metal body 214, outer isolation net cylinder 215, lower isolation net plate 216) is the internal shape of the water discharge cap 250. It may be a corresponding size and shape as long as it is accommodated throughout the water discharge cap 250. For example, the base metal body 212, the inner isolation net cylinder 213, the noble metal body 214, and the outer isolation net cylinder 215 are slightly lower than the female screw portion 252 in the inner space of the water discharge cap 250 in which the strainer 225 is accommodated (upper and lower isolation). The height is small by the amount of the mesh plates 211 and 216). Further, the outer diameter of the outer isolation net cylinder 215 and the diameter of the isolation net plates 211 and 216 correspond to the inner diameter of the water discharge cap 250.

The base metal body 212 is a columnar body made of a zinc-magnesium alloy having a zinc (Zn) ratio of 95% or more (less than 5% magnesium (Mg)). It has a substantially star-shaped or chrysanthemum-shaped cross-sectional shape in which a plurality of (six in the illustrated example) concave grooves 212a each extending linearly along the axial direction are provided at regular intervals in the direction. The cross-sectional shape of each concave groove 212a of the base metal body 212 is a concave curved surface shape that is shallower (larger in curvature) than the semicircular cross-section, and a narrow belt-like surface formed between adjacent concave grooves 212 (total of six). Is the one in which the outer peripheral surface of the original cylindrical body remains as it is, and extends linearly along the axial direction. Therefore, the thickness of the gap space formed between the base metal body 212 and the noble metal body 214 by the inner isolation net cylinder 213 is uniform not only in the length direction but also in all directions such as the width direction in the band-shaped surface portion of the base metal body 212. The thickness of the concave groove 212a of the base metal body 212 is uniform in the length direction, but is gradually increased toward the center of the concave groove 212a in the width direction. . On the other hand, the noble metal body 214 is a short cylindrical body made of a stainless alloy (SUS) and having circular openings at both upper and lower ends. The noble metal body 214 has an inner diameter that is larger than that of the base metal body 212, accommodates the base metal body 212 therein, and is arranged substantially coaxially. At this time, a gap is formed between the base metal body 212 and the noble metal body 214. Further, since the concave groove 212a is formed in the base metal body 212, the capacity of the gap between the noble metal body 214 is increased and the surface area is expanded only in the concave groove 212a as compared with a simple cylindrical shape. As a result, according to the base metal body 212 of the third embodiment, it is possible to secure a larger amount of water than the columnar body like the base metal body 12 of the first embodiment and the second embodiment, and contact with water. The area expands. Furthermore, when the base metal body is a simple columnar shape and the noble metal body is a simple cylindrical shape and the gap interval between the base metal body and the noble metal body is a simple cylindrical shape, the amount of water that can flow through the gap interval is reduced. When the base metal body 212 in which the concave groove 212a extending along the axial direction is used as in the present embodiment, the flowing water at the gap interval is dissipated in an arbitrary direction. In addition, it is possible to rectify the flowing water along the concave groove 212a. In particular, even if the rectifier is not provided in the water discharge cap 250, the base metal body 212 itself functions as a rectifier and flows through the water discharge cap 250. The water can be reliably rectified and discharged from the water discharge cap 250 so as to have an axial flow that flows linearly along the axial direction. Further, in this gap between the base metal body 212 and the noble metal body 214, an inner isolation net cylinder 213 as an isolation net is interposed so that the base metal body 212 and the noble metal body 214 do not directly contact each other. The substantially entire peripheral surface is opposed to the substantially entire outer peripheral surface of the base metal body 212 with the inner isolation net cylinder 213 interposed therebetween.

Here, the isolation net is a sheet material made of an insulating material such as polypropylene (PP) and having a large number of small holes formed on the entire surface. The upper isolation net 211, the inner isolation net 213, the outer isolation net 215, and It consists of a lower isolation screen 216. An inner isolation net cylinder 213 as an isolation net is interposed in the gap between the base metal body 212 and the noble metal body 214. That is, the inner isolation net cylinder 213 is a cylindrical sheet material in which a large number of small holes 213a made of an insulating material such as polypropylene (PP) are formed on the entire surface and whose upper and lower ends are circular openings, and the outer diameter of the base metal body 214 ( It forms a cylindrical shape with an inner diameter corresponding to the distance between the strip-shaped surface portions facing each other in the diametrical direction, and constitutes the spacing member of the present embodiment. In addition, the inner isolation net cylinder 213 is disposed between the base metal body 212 and the noble metal body 214 and isolates the outer peripheral surface of the base metal body 212 and the inner peripheral surface of the noble metal body 214 from direct contact. That is, as in the first embodiment, the inner isolation mesh cylinder 213 is supported in contact with the outer peripheral surface of the band-shaped surface of the base metal body 212 in a linear or dotted manner by a plurality of support lines 213b or a plurality of support points. The entire inner peripheral surface of the noble metal body 214 is supported in contact with a plurality of support lines 213b or a plurality of support points in a linear or dot shape. The inner isolation net cylinder 213 does not come into contact with the concave groove 212a of the base metal body 212.

Further, an outer isolation net cylinder 215 as an isolation net is mounted along the outer peripheral surface of the noble metal body 214 so that the outer peripheral surface of the noble metal body 214 and the water discharge cap 250 do not directly contact each other. The outer isolation mesh cylinder 215 is a cylindrical sheet material in which a large number of small holes 215a made of an insulating material such as polypropylene (PP) are formed on the entire surface and whose upper and lower ends are circular openings, and corresponds to the outer diameter of the noble metal body 214. It has a cylindrical shape with an inner diameter and is isolated so that the outer peripheral surface of the noble metal body 214 and the inner peripheral surface of the water discharge cap 250 are not in direct contact. Further, as in the first embodiment, the outer isolation mesh cylinder 215 is supported in contact with the outer peripheral surface of the noble metal body 214 in a linear or dotted manner by a plurality of support lines 215b or a plurality of support points. A plurality of support lines 215b or a plurality of support points contact and support the inner peripheral surface of 250 in a linear or dotted manner.

Further, an isolation net is attached so that the upper end surface and the lower end surface of the base metal body 212 and the noble metal body 214 do not directly contact other members (packing 224, strainer 225). In other words, the upper isolation screen 211 is mounted as an isolation screen on the upper end surfaces of the base metal body 212 and the noble metal body 214, while the lower isolation screen plate 216 is mounted as an isolation screen on the lower end surface. The upper isolation screen 211 is a circular sheet material formed with a large number of small holes 211 a made of an insulating material such as polypropylene (PP) on the entire surface, and corresponds to the diameter of the inner peripheral surface of the upper end of the packing 224 to the water discharge cap 250. It has a circular shape. The upper isolation mesh plate 211 is interposed between the packing 224 and the base metal body 212 and the noble metal body 214 so as to isolate the packing 224 from the upper end surface of the base metal body 212 and the upper end surface of the noble metal body 214. On the other hand, the lower isolation screen 216 is a circular sheet material having a large number of small holes 216a made of an insulating material such as polypropylene (PP) formed on the entire surface in the same manner as the upper isolation screen 211. A circular shape with a diameter corresponding to the diameter of the inner peripheral surface of the lower end of the cap 250 is formed. The lower isolation screen 216 is interposed between the strainer 225, the base metal body 212, and the noble metal body 214, and the upper end surface of the strainer 225, the lower end surface of the base metal body 212, and the lower end surface of the noble metal body 214 are not in direct contact with each other. Isolate. In addition, as in the first embodiment, the upper separation screen 211 is linear with respect to the packing 224 and the upper end surface of the base metal body 212 and the upper end surface of the noble metal body 214 by a plurality of support lines 211b or a plurality of support points. Support in contact with dots. Similarly, as in the first embodiment, the lower isolation screen 216 is connected to the strainer 225 and the lower end surface of the base metal body 212 and the lower end surface of the noble metal body 214 by a plurality of support lines 216b or a plurality of support points. To support in contact with each other.

In addition, since the whole amount of the water flow of the water discharge pipe 41 flows directly in the axial direction, the water discharge amount of the water discharge port adapter of the third embodiment increases compared to the water drain adapters of the first and second embodiments. At the same time, since the height of the sterilization unit 210 is set low, there is a possibility that the base metal body 212 and the noble metal body 214 may move in the axial direction from a predetermined position due to the impact of water flow or the like. However, even in such a case, the base metal body 212 and the noble metal body 214 as reactants for ion elution are fixed between the upper-side isolation screen 211 and the lower-side isolation screen 216 and isolated so as not to directly contact other members. Therefore, it is possible to prevent a problem that direct ionization is prevented due to direct contact with a metal such as the water discharge cap 250.

[Assembly method]
Next, a method for assembling a water outlet adapter as a water sterilizer according to Embodiment 3 of the present invention will be described.
First, the strainer 225 is inserted into the water discharge cap 250 and placed on the bottom surface. Thereafter, as shown in FIG. 9, the sterilization unit (upper isolation net plate 211, base metal body 212, inner isolation net cylinder 213, noble metal body 214, outer isolation net cylinder 215, lower isolation net plate 216) 210 is discharged into the water discharge cap 250. Insert and house inside. At this time, you may accommodate in the water discharge cap 250 in the state which assembled the whole sterilization unit 210. FIG. Alternatively, each part may be individually accommodated and assembled in the water discharge cap 250. In this case, for example, the lower isolation mesh plate 216 is first accommodated in the water discharge cap 250 and stacked on the strainer 225, and then the outer isolation mesh tube 215 is accommodated in the water discharge cap 250. Next, after inserting the noble metal body 214 into the outer isolation net cylinder 215, the inner isolation net cylinder 213 is inserted into the noble metal body 214, and then the base metal body 212 is inserted into the inner isolation net cylinder 213. Finally, the upper isolation screen 211 is accommodated in the water discharge cap 250, and the female screw portion 252 of the water discharge cap 250 is screwed to the water discharge pipe mounting portion 44 via the packing 224 to attach the water discharge cap 250. The sterilization unit 210 is held in 250.

[Mounting to the water discharge pipe]
As shown in FIG. 10, the sterilization unit 210 is assembled and accommodated in the water discharge cap 250, and the female screw of the water discharge cap 250 is formed on the lower surface of the distal end portion of the water discharge pipe 41 with the packing 224 placed thereon. The mounting portion 44 is screwed and attached. A male screw corresponding to the female screw of the water discharge cap 250 is formed on the outer peripheral surface of the attachment portion 44. That is, the packing 224 is placed and mounted on the upper isolation mesh plate 211 in the water discharge cap 250, and the female screw is screwed to the mounting portion 44 in this state, so that the water discharge cap 250 is connected to the tip of the water discharge pipe 41. The internal sterilization unit 210 communicates with the water passage in the water discharge pipe 41 through the opening of the attachment portion 44.

[Operation and effect of sterilization unit]
Hereinafter, the operation and effect of the sterilization unit 210 of the spout adapter as the water sterilizer according to Embodiment 3 of the present invention will be described.
When the raw water W in the water discharge pipe 250 is discharged, the raw water W enters the sterilization unit 210 from the circular opening at the base end of the mounting portion 44 through the foam core 45 and from the circular opening at the base end of the water discharge cap 250. . The raw water W enters the sterilization unit 210 and then enters the gap space between the outer peripheral surface of the base metal body 212 and the inner peripheral surface of the noble metal body 214 through the numerous small holes 211a of the upper isolation screen 211. At this time, although the inner isolation net cylinder 213 is interposed between the base metal body 212 and the noble metal body 214, the inner water separation net cylinder 213 comes into contact with them in a linear or dot form, so that the raw water W enters the gap between the tangent lines or the contact points. . In addition, the raw water W also enters the numerous small holes 213a of the inner isolation screen 213. On the other hand, since the concave groove 212a of the base metal body 212 promotes water flow, a water discharge amount similar to a normal water discharge amount can be ensured. Thus, the raw water W enters the entire area between the outer peripheral surface of the base metal body 212 and the inner peripheral surface of the noble metal body 214. At this time, a local battery is formed between the base metal body 212 and the noble metal body 214 via the raw water W due to a difference in ionization tendency (potential difference) between the base metal body 212 and the noble metal body 214, and the so-called corrosion battery action causes base metal to form. Metal ions (Zn ions and Mg ions) are eluted from the body 212 into the raw water W. Moreover, specific metal ions such as Zn ions and Mg ions have a bactericidal action in water. In particular, Mg ions have a strong bactericidal action. Therefore, various bacteria such as general bacteria and Escherichia coli in the raw water can be sterilized by Zn ions and Mg ions eluted in the raw water. In particular, according to the spout adapter of the present embodiment, it has been confirmed by the inventors' experiments that a sufficient sterilizing and sterilizing effect is exhibited even in the case of continuous water discharge (transient water). With the eluted metal ions, the raw water W can be sterilized and supplemented with minerals. Thereafter, the raw water W containing metal ions is discharged from the water discharge port 251 of the water discharge cap 250.

[Operation and effect of single lever faucet]
As shown in FIG. 11, when applied to the single lever faucet 40 together with the drain adapter of the first embodiment, when the raw water (warm water or cold water) W is passed by operating the handle 43, the passage in the water discharge pipe 41 is performed. The water flow (raw water) W flowing through the water channel reaches the flow rate adjusting plate 24 from the circular opening of the attachment portion 42 on the proximal end side of the water discharge pipe 41 through the circular opening of the male screw portion 22 of the water draining housing 20 to adjust the flow rate. The plate 24 enters the sterilization unit 10 through the flow rate adjusting hole 24a. After entering the sterilization unit 10, the raw water W enters the gap between the outer peripheral surface of the base metal body 12 and the inner peripheral surface of the noble metal body 14 through the numerous small holes 11 a of the upper isolation screen 11. At this time, although the inner isolation net cylinder 13 is interposed between the base metal body 12 and the noble metal body 14, since it contacts with them in a linear or dotted manner, the raw water W enters the gap between the tangent lines or between the contact points. . In addition, the raw water W also enters the numerous small holes 13 a of the inner isolation screen 13. Thus, the raw water W enters the entire area between the outer peripheral surface of the base metal body 12 and the inner peripheral surface of the noble metal body 14. At this time, due to the difference in ionization tendency (potential difference) between the base metal body 12 and the noble metal body 14, a local battery is formed between the base metal body 12 and the noble metal body 14 via the raw water W, so-called corrosion battery action (sacrificial). Metal ions (Zn ions and Mg ions) are eluted from the base metal body 12 into the raw water W by the anticorrosive action. The elution metal ions sterilize the raw water W and replenish minerals. Thereby, various bacteria such as general bacteria and Escherichia coli in the raw water W can be sterilized by the sterilizing action of Zn ions and Mg ions eluted in the raw water W, and the sterilizing effect is exhibited even in the case of continuous water flow. Can do. Further, by changing the shape of the flow rate adjusting hole 24a of the flow rate adjusting plate 24 to increase or decrease, the amount of raw water W entering the sterilizing unit 10 from the flow rate adjusting hole 24a is adjusted. 12 adjusts the amount of raw water W containing metal ions eluted from the flow rate adjusting hole 24 into the water discharge pipe 41, and finally adjusts the amount of metal ions in the discharged water discharged from the water outlet 251. be able to. Therefore, with the flow rate adjusting plate 24, among the metal ions in the raw water W, even with respect to Zn having a reference value based on the water quality standard of drinking water such as tap water and purified water, the content thereof is reliably controlled to be below the reference value. can do.

The raw water W from which the metal ions have been eluted by the sterilization unit 10 of the drain adapter further flows in the water discharge pipe 41 and flows into the water discharge cap 250 of the water discharge adapter from the circular opening of the attachment portion 44 on the tip side. And the raw | natural water W which flows through the water flow path in the water discharge cap 250 approachs into the clearance gap between the outer peripheral surface of the base metal body 212, and the inner peripheral surface of the noble metal body 214 from many small holes 211a of the upper side separation net plate 211. At this time, although the inner isolation net cylinder 213 is interposed between the base metal body 212 and the noble metal body 214, the inner water separation net cylinder 213 comes into contact with them in a linear or dot form, so that the raw water W enters the gap between the tangent lines or the contact points. . In addition, the raw water W also enters the numerous small holes 213a of the inner isolation screen 213. Thus, the raw water W enters the entire region between the outer peripheral surface of the base metal body 212 and the inner peripheral surface of the noble metal body 214. Further, the plurality of concave grooves 212a on the outer peripheral surface of the base metal body 212 ensure a sufficient amount of water flow. That is, since the water outlet adapter according to Embodiment 3 has the base metal body 212 having a substantially star-shaped or chrysanthemum-shaped cross-sectional shape, the water flow W flowing into the water discharge cap 250 is caused to be the same as that of the conventional case by the concave groove 212a of the base metal body 212. The water flow W can be smoothly discharged at a flow rate of 5 mm, and the water flow W can be guided and smoothly discharged along the concave groove 212 a of the base metal body 212. At this time, due to the difference in ionization tendency (potential difference) between the base metal body 212 and the noble metal body 214, a local battery is formed between the base metal body 212 and the noble metal body 214 via the raw water W, so-called corrosion battery action (sacrificial). Metal ions (Zn ions and Mg ions) are eluted from the base metal body 212 into the raw water W by the anticorrosive action. In other words, the raw water W can be sterilized and supplemented with minerals by the eluted metal ions from the sterilization unit 10 and the sterilization unit 210 on both the proximal end side and the distal end side of the water discharge pipe 41. As a result, various bacteria such as general bacteria and Escherichia coli in the raw water W are obtained by the sterilizing action of Zn ions and Mg ions eluted in the raw water W by the water drain adapter on the proximal end side of the water discharge pipe 41 and the water outlet adapter on the distal end side. Bacteria can be sterilized and sterilized more reliably, and a sufficient sterilization and sterilization effect can be exhibited even in the case of continuous water flow. As described above, the sterilization units 10 and 210 may be installed on both the proximal end (drainage adapter) and the distal end (spout adapter) of the water discharge pipe 41, or may be installed only on one of them. It is also possible to adjust the total elution amount of metal ions depending on whether they are installed on either side (base end side or tip end side).

Embodiment 4
Hereinafter, the drain adapter as a water sterilizer according to Embodiment 4 of the present invention will be described. As shown in FIG. 12, the water drain adapter according to the fourth embodiment includes the sterilization according to the first embodiment in the water drain housing 120 having the same configuration as the water drain housing 120 of the water drain adapter according to the second embodiment. The sterilization unit 110 having a configuration similar to that of the unit 10 is accommodated, and the lower end thereof is closed with the drain cap 30 of the first embodiment. Specifically, the drainage housing 120 has a base 121 and a male screw 122 similar to the base 21 and the male screw 23 of the drainage housing 120, while omitting the male screw 22 at the upper end and the male screw 22. A circular screw hole 121a corresponding to the circular opening is formed in the center of the upper end surface. In this case, the attachment portion 42 of the water discharge pipe 41 is formed with a male screw that can be screwed into the screw hole 121a of the drainage housing 120 on the outer peripheral surface, and the attachment portion 42 of the drainage housing 120 has a screw hole 121a. A male screw is screwed in, and the water draining adapter of Example 1 is detachably attached to the proximal end portion of the water discharge pipe 41. The sterilization unit 110 includes the upper isolation screen 11, the inner isolation screen 13, the noble metal body 14, the outer isolation screen 15, and the lower isolation screen 16, while the first reactant is a base metal body. 12 has a base metal body 112 having a columnar shape different from 12. Base metal body 112 is a columnar body made of a zinc-magnesium alloy having a zinc (Zn) ratio of 95% or more (less than 5% of magnesium (Mg)), as in base metal body 212 of the third embodiment. A plurality of concave grooves 112a (in the example shown in the figure) extending linearly along the axial direction at a predetermined angle (with a constant interval in the circumferential direction) on the outer peripheral surface of a cylindrical body having the same diameter as the base metal body 12 6) The substantially star-shaped or chrysanthemum-shaped cross-sectional shape is formed. The cross-sectional shape of each concave groove 112a of the base metal body 112 is a concave curved surface shape that is shallower (larger in curvature) than the semicircular cross-section, and a narrow strip-shaped surface formed between adjacent concave grooves 112 (total of six). Is the one in which the outer peripheral surface of the cylinder with the original diameter remains as it is, and extends linearly along the axial direction. Note that the diameter of the inner isolation mesh cylinder 13 is the same as that in the first embodiment. Therefore, the thickness of the gap space formed between the base metal body 112 and the noble metal body 14 by the inner isolation net cylinder 13 is the same as that in the first embodiment in the band-shaped surface portion of the base metal body 112. The thickness is uniform not only in the length direction but also in all directions such as the width direction. In the concave groove 112a portion of the base metal body 112, the distance is uniform in the length direction, while in the width direction the center of the concave groove 112a. The thickness gradually increases (becomes deeper). As in the case of the third embodiment, the inner isolation net tube 13 has an inner diameter that is substantially the same as the outer diameter of the band-shaped surface portion of the base metal body 212, and a plurality of supports are provided on the outer peripheral surface of the band-shaped surface of the base metal body 112. The line 13b or the plurality of support points are in contact with and supported in a line shape or a point shape, and the entire inner peripheral surface of the noble metal body 14 is contacted in a line shape or a point shape by the plurality of support lines 13b or the plurality of support points. To support. Further, the inner isolation net cylinder 13 does not contact the concave groove 112 a of the base metal body 112. A seal member 125 having a ring shape having an outer diameter substantially the same as the inner diameter of the female screw portion 32 is placed and mounted on the inner bottom surface of the female screw portion 32 of the drain cap 30 instead of the packing 25. . Then, the drain adapter according to the fourth embodiment is assembled in the same manner as in the first embodiment and attached to the attachment portion 42 on the proximal end side of the water discharge pipe 41, and the same effect as in the first embodiment is obtained. Demonstrate. Furthermore, the drainage adapter according to the different example 1 can greatly improve the fluidity of the water flow W that has entered the interior by the concave groove 112a of the base metal body 112.

Another example of the fourth embodiment Hereinafter, another example of the drainage adapter according to the fourth embodiment will be described. As shown in FIG. 13, the drain adapter according to another example of the fourth embodiment uses the base metal body 12 of the first embodiment as the first reactant and is different from the cylindrical shape as the second reactant. Although it differs from the drain adapter according to the fourth embodiment in that the cylindrical precious metal body 114 is used, other configurations are the same. In detail, the noble metal body 114 of the drainage adapter according to another example of the embodiment 4 is a cylindrical body made of the same metal (SUS or Ti) as the noble metal body 14 at a predetermined angle (a constant interval) in the circumferential direction. It has a cylindrical shape with a substantially star-shaped or chrysanthemum-shaped cross-section that bends inward and outward and has irregularities in and out. In the example shown in the drawing, the noble metal body 114 has a total of 18 inner and outer bent portions of 9 outside and 9 inside, and forms a total of nine concave grooves having a substantially isosceles triangular shape on the outer peripheral side. At the same time, a total of nine concave grooves having a substantially isosceles triangular cross section are also formed on the inner peripheral side. Note that the diameter of the inner isolation mesh cylinder 13 is the same as that in the first embodiment. The inner diameter of the noble metal body 114 (the distance between the inner opposing bending points in the diametric direction) is substantially the same as the outer diameter of the inner isolation mesh tube 13, and the outer diameter of the noble metal body 114 (the outer facing in the diametric direction). The distance between the bending points) is substantially the same as the inner diameter of the outer isolation screen cylinder 15. Therefore, the thickness of the gap space formed between the base metal body 12 and the noble metal body 114 by the inner isolation net tube 13 is the bending point inside the noble metal body 114 (the bending point between adjacent concave grooves on the inner peripheral side, In other words, the thickness of the outer peripheral groove is approximately the same as that of the first embodiment, while the width of the other groove from the center in the width direction (flex point) of the outer groove is the other. The thickness gradually increases toward both ends in the direction. However, even in the case of another example of the fourth embodiment, the thickness of the gap space formed between the base metal body 12 and the noble metal body 114 by the inner isolation net tube 13 is uniform in the length direction. Similarly, the thickness of the gap space formed between the noble metal body 114 and the inner peripheral surface of the base 121 by the outer isolation net cylinder 15 is substantially the same as that in the first embodiment at the bending point outside the noble metal body 114. On the other hand, in the other portions, the thickness gradually decreases from the center in the width direction (bending point) of the concave groove on the outer peripheral side toward both ends in the width direction. As in the case of the first embodiment, the inner isolation mesh cylinder 13 has an inner diameter substantially the same as the diameter of the base metal body 12, and a plurality of support lines 13 b or a plurality of support points are provided on the outer peripheral surface of the base metal body 12. While being supported in contact with a line or a dot, it is supported in contact with the bending point inside the noble metal body 114 in a line or a point by a plurality of support lines 13b or a plurality of support points. Further, the inner separating net cylinder 13 does not contact the concave groove of the noble metal body 114. The drain adapter according to another example of the fourth embodiment is assembled in the same manner as in the first embodiment and attached to the attachment portion 42 on the proximal end side of the water discharge pipe 41, and is the same as in the first embodiment. Demonstrate the effect. Furthermore, the drainage adapter according to the alternative example 2 can greatly improve the fluidity of the water flow W that has entered the interior due to the concave groove of the noble metal body 114 as in the case of the alternative example 1.

Another Example of Embodiment 3 Hereinafter, another example of the water outlet adapter according to the third embodiment will be described. As shown in FIG. 14, the spout adapter according to another example of the third embodiment is the first cylindrical body 312 of the base metal body 212 of the third embodiment as a first reactant (before forming the concave groove 212a). Is different from the spout adapter according to the third embodiment in that a cylindrical noble metal body 314 that is different from the cylindrical shape is used as the second reactant. It is. Specifically, the base metal body 312 of the spout adapter according to another example of the third embodiment is made of a zinc-magnesium alloy similar to the base metal body 212, and has a cylindrical shape having a diameter substantially the same as the inner diameter of the inner isolation net tube 213. Make. Further, the noble metal body 314 is a substantially star shape in which a cylindrical body made of the same metal (SUS or Ti) as the noble metal body 214 is bent inward and outward at a predetermined angle (fixed interval) in the circumferential direction to be uneven on the inside and outside. Or a chrysanthemum-shaped cross-sectional cylinder. In the example shown in the drawing, the noble metal body 314 has a total of 18 inner and outer bent portions of 9 outside and 9 inside, and forms a total of 9 concave grooves having a substantially isosceles triangular shape on the outer peripheral side. At the same time, a total of nine concave grooves having a substantially isosceles triangular cross section are also formed on the inner peripheral side. Note that the diameter of the inner isolation mesh cylinder 213 is the same as that in the third embodiment. The inner diameter of the noble metal body 314 (the distance between the inner opposing bending points in the diametric direction) is substantially the same as the outer diameter of the inner isolation mesh cylinder 213, and the outer diameter of the noble metal body 314 (the outer facing in the diametric direction). The distance between the bending points) is substantially the same as the inner diameter of the outer isolation screen cylinder 215. Therefore, the thickness of the gap space formed between the base metal body 312 and the noble metal body 314 by the inner isolation mesh cylinder 213 is determined by the bending point on the inner side of the noble metal body 314 (the bending point between adjacent concave grooves on the inner peripheral side, In other words, the thickness of the outer peripheral groove is approximately the same as that of the third embodiment, and in other portions, the width from the center in the width direction (flex point) of the outer groove is The thickness gradually increases toward both ends in the direction. However, even in the case of another example 1, the thickness of the gap space formed between the base metal body 312 and the noble metal body 314 by the inner isolation mesh tube 213 is uniform in the length direction. Similarly, the thickness of the gap space formed between the noble metal body 314 and the inner peripheral surface of the water discharge cap 250 by the outer isolation net cylinder 215 is substantially the same as in the third embodiment at the bending point outside the noble metal body 314. On the other hand, the thickness is the same, but the thickness is gradually reduced from the center in the width direction (bending point) of the concave groove on the outer peripheral side toward both ends in the width direction. As in the case of the third embodiment, the inner isolation net tube 213 is supported in contact with the belt-like surface of the base metal body 312 by a plurality of support lines 213b or a plurality of support points in the form of a line or dots, and a noble metal A plurality of support lines 213b or a plurality of support points are brought into contact with a bending point inside the body 314 in a linear or dot form to support it. Further, the inner isolation net cylinder 213 does not contact the concave groove of the noble metal body 314. And the spout adapter which concerns on another example 1 is assembled like the case of Embodiment 3, and is mounted | worn with the attaching part 44 at the front end side of the spout pipe 41, and exhibits the effect similar to Embodiment 3. . Furthermore, the spout adapter according to another example of the third embodiment is configured such that the water flow W flowing into the spout cap 250 flows through the spout cap 250 even though the base metal body 312 is formed into a columnar shape that is easy to manufacture. The inner and outer grooves can be smoothly discharged at the same flow rate as before, and the water flow W can be guided along the grooves of the noble metal body 314 and discharged smoothly. In addition, as described for the base metal body 212 of the third embodiment, when the noble metal body 314 having the concave groove extending in the axial direction is used as in this separate example, a sufficient amount of flowing water is obtained as described above. In addition to being able to ensure, flowing water can be rectified along the concave grooves on the inner peripheral surface side and the outer peripheral surface side. The water flowing through the water discharge cap 250 can be reliably rectified and discharged from the water discharge cap 250 so as to be an axial flow that flows linearly along the axial direction.

Embodiment 5
Hereinafter, a water purifier adapter as a water sterilizer according to Embodiment 5 of the present invention will be described. As shown in FIG. 15, the water sterilizer according to the fifth embodiment is embodied in a water purifier adapter that is detachably connected to a water purifier outlet of a water purifier and is used in watertight communication with a water passage in the water purifier. Is done. The water purifier adapter of the fifth embodiment includes a sterilization unit 410 and a water purifier housing 460 that houses the sterilization unit 410 therein.

[Housing for water purifier 460]
The water purifier housing 460 is made of plastic or the like, and has bent water passages (an upstream straight portion 466 and a downstream straight portion 467) that are bent at an acute angle with a “L” shape or a claw shape inside, and a water purifier ( The purified water inlet 461 is detachably connected to the purified water outlet (not shown) in the recess on the outer bottom surface of the outer bottom surface (not shown), so that the water passed through the bent water passage is discharged from the purified water outlet 463 to the purified water hose. It is like that. The bent water passage is composed of an upstream straight portion 466 and a downstream straight portion 467, and the upstream straight portion 466 and the downstream straight portion 467 communicate with each other via a bent portion 466a of the upstream straight portion 466.

The upstream straight portion 466 extends from the purified water inlet 461. An upstream end opening (stepped portion) 468 is formed at the upstream end of the upstream linear portion 466 and communicates with the purified water inlet 461 in a watertight manner. The upstream linear portion 466 is larger in diameter than the inner diameter of the purified water inlet 461, and has a stepped shape at the upstream end opening (stepped portion) 468. A flow rate adjusting plate 424 is disposed in the upstream end opening. The flow rate adjusting plate 424 is made of a metal such as a copper alloy as in the first and second embodiments, and is an inner peripheral surface of the upstream end opening (stepped portion) 468 that communicates with the purified water inlet of the water passage in the water purifier housing. Is a perforated disk body having a diameter corresponding to (substantially the same diameter or slightly smaller diameter). A circular flow rate adjusting hole 424a having a predetermined diameter is formed through the center of the flow rate adjusting plate 424. The flow rate adjusting plate 424 is disposed on the bottom surface of the upstream end opening 468 of the upstream linear portion 466, and communicates the purified water inlet 461 and the upstream linear portion 466 through the flow rate adjusting hole 424a. As a result, the flow rate adjustment plate 424 supplies the amount of purified water flowing from the water purifier through the purified water inlet 461 to the downstream linear portion 467 from the upstream straight portion 466 of the bent water passage and flowing out to the purified water outlet 463. Adjust. As in the first and second embodiments, the flow rate adjustment plate 424 is prepared by preparing a plurality of types of flow rate adjustment plates 424 in which the diameter of the flow rate adjustment hole is changed, and replacing the flow rate adjustment plate with one having a large diameter or a small diameter. Can be adjusted. On the other hand, a mounting port 462 is formed at the downstream end of the upstream linear portion 466. The mounting port 462 communicates with the center (bent portion 466a) of the water flow port. From here, the flow rate adjusting plate 424, the sterilization unit (each separating net plate 411, 416, the separating net tube 413, 415, the base metal body 412, the noble metal body 414). 410) and the spacer net 465 are accommodated. At this time, the spacer net 465 is disposed in the bent portion 466a so that the downstream straight portion 467 extending at an acute angle from the bent portion 466a is not blocked by the sterilization unit 410. That is, the spacer net 465 has a net-like cylindrical shape that is accommodated after the sterilization unit 410 is accommodated and accommodated and arranged on the downstream side of the sterilization unit 410, and has a bent portion of the water passage. A water passage space is secured at 466a (a portion between the upstream linear portion 466 and the downstream linear portion 467). A cap 464 is detachably attached to the attachment port 462. At this time, a male screw is formed on the outer peripheral surface of the mounting port 462, while the cap 464 has an inner diameter corresponding to the outer diameter of the mounting port 462, and a female screw is formed on the inner peripheral surface. The mounting port 462 is sealed in a watertight manner by screwing and mounting to the 464.

The downstream straight portion 467 extends at an acute angle from the bent portion 466a to the purified water outlet 463. The purified water outlet 463 is detachably connected to a purified water hose (flexible tube) (not shown) and is formed on the peripheral surface of the downstream straight portion 467 of the bent water passage in the water purifier housing 460 so as to face the purified water outlet 463. The circular downstream end opening is communicated. The purified water outlet 463 is made of a plastic or the like formed separately from a water purifier main body (excluding the cap 464 and the purified water outlet 463 from the water purifier housing 460). The purified water outlet 463 is screwed or tightly fitted into a circular opening at the downstream end of the downstream straight portion 467 of the bent water passage of the water purifier main body, and is inserted in a watertight manner. Although the purified water outlet 463 may be fixed to the circular opening of the downstream straight portion 467 by adhesion or the like, the purified water outlet 463 is detachable from the water purifier housing 460 so as to be detachable from the circular opening. Access to the inside of the bent water passage may be facilitated for the purpose of removing foreign substances and the like clogged in the straight portion 467.

[Sterilization unit 410]
The sterilization unit 410 includes a base metal body 412 and a noble metal body 414, and is isolated on the surface so that the base metal body 412 and the noble metal body 414 do not directly contact other members (water purifier housing 460, flow rate adjusting plate 424, spacer net 465). A net (upper isolation net plate 411, inner isolation net cylinder 413, outer isolation net cylinder 415, lower isolation net plate 416) is provided. The size and shape of the sterilization unit (upper isolation net plate 411, base metal body 412, inner isolation net cylinder 413, noble metal body 414, outer isolation net cylinder 415, lower isolation net plate 416) is the same as the flow path of the water purifier housing 460. The size and shape may correspond to the internal shape of the upstream straight portion 466 and may be any size and shape that can be accommodated throughout the upstream straight portion 466 of the bent water passage. For example, the base metal body 412, the inner isolation net cylinder 413, the noble metal body 414, and the outer isolation net cylinder 415 are an internal space obtained by removing the flow rate adjusting plate 424 and the spacer network 465 from the internal space of the upstream straight portion 466 of the bent water passage. It has a slightly smaller height (a height that is smaller by the upper and lower separation mesh plates 411 and 416). The outer diameter of the entire sterilization unit 410 (the outer diameter of the outer separation screen cylinder 415 and the diameter of the upper and lower separation screen plates 411 and 416) corresponds to the inner diameter of the upstream straight portion 466 of the bent water passage (substantially the same). To do). The diameter of the spacer net 424 also corresponds to the inner diameter of the upstream straight portion 466 of the bent water passage (substantially the same).

The base metal body 412 is a columnar body made of a zinc-magnesium alloy having a zinc (Zn) ratio of 95% or more (less than 5% magnesium (Mg)), and the example of FIG. 12 (another example of the first and second embodiments). ) Of the base metal body 112. That is, the base metal body 412 has a substantially star-shaped or chrysanthemum-shaped cross section in which a plurality of axial grooves 412a are formed at a predetermined angle on the outer peripheral surface, and the amount of water on the outer periphery is secured. On the other hand, the noble metal body 414 is a cylindrical body made of a stainless alloy (SUS) as in the first and second embodiments, has an inner diameter larger than that of the base metal body 412, and substantially the entire inner peripheral surface is on the inner side. It faces substantially the entire outer peripheral surface of the base metal body 412 with the separating net cylinder 413 interposed therebetween. The noble metal body 414 has an inner diameter larger than that of the base metal body 412, accommodates the base metal body 412 therein, and is arranged substantially coaxially. At this time, a gap is formed between the base metal body 412 and the noble metal body 414. In this gap, an isolation network is interposed so that the base metal body 412 and the noble metal body 414 do not directly contact each other, and the substantially entire inner peripheral surface of the noble metal body 414 is interposed between the isolation metal and the outer peripheral surface of the base metal body 412. It is designed to face almost the entire surface.
Here, the isolation net is a sheet material made of an insulating material such as polypropylene (PP) and having a large number of small holes formed on the entire surface. The upper isolation net plate 411, the inner isolation net cylinder 413, the outer isolation net cylinder 415, and It consists of a lower isolation screen 416. In the gap between the base metal body 412 and the noble metal body 414, an inner isolation net cylinder 413 is interposed as an isolation net. The inner isolation net cylinder 413 is a cylindrical sheet material in which a large number of small holes 413a made of an insulating material such as polypropylene (PP) are formed on the entire surface and whose upper and lower ends are circular openings, and corresponds to the outer diameter of the base metal body 414. It has a cylindrical shape with an inner diameter. The inner isolation net cylinder 413 is disposed between the base metal body 412 and the noble metal body 414 and isolates the outer peripheral surface of the base metal body 412 and the inner peripheral surface of the noble metal body 414 from direct contact. Further, the inner isolation net cylinder 413 is supported in contact with the outer peripheral surface of the base metal body 412 in a linear or dotted manner by a plurality of support lines 413b or a plurality of support points. Similarly, the inner isolation mesh cylinder 413 is supported in contact with the inner peripheral surface of the noble metal body 414 in a linear or dotted manner by a plurality of support lines 413b or a plurality of support points.

Further, in order to prevent direct contact between the outer peripheral surface of the noble metal body 414 and the water purifier housing 460, an outer isolation net cylinder 415 is attached as an isolation net along the outer peripheral surface of the noble metal body 414, as in the first and second embodiments. Yes. The outer isolation mesh cylinder 415 is a cylindrical sheet material in which a large number of small holes 415a made of an insulating material such as polypropylene (PP) are formed on the entire surface and whose upper and lower ends are circular openings. It has a cylindrical shape with an inner diameter corresponding to the outer diameter of the noble metal body 414. The outer isolation net cylinder 415 isolates the outer peripheral surface of the noble metal body 414 and the inner peripheral surface of the water purifier housing 420 so as not to directly contact each other. The outer isolation mesh cylinder 415 is supported in contact with the outer peripheral surface of the noble metal body 414 in a linear or dotted manner by a plurality of support lines 415b or a plurality of support points. Further, the water purifier housing 460 is supported in contact with the inner peripheral surface of the water purifier housing 460 in a linear or dotted manner by a plurality of support lines 415b or a plurality of support points.

Furthermore, as in the first and second embodiments, an isolation net is attached so that the upper end surface and the lower end surface of the base metal body 412 and the noble metal body 414 do not directly contact other members (the flow rate adjusting plate 424 and the spacer net 465). In other words, the upper isolation screen 411 is mounted as an isolation screen on the upper end surfaces of the base metal body 412 and the noble metal body 414, and the lower isolation screen 416 is mounted as an isolation screen on the lower end surface. The upper isolation mesh plate 411 is a circular sheet material formed with a large number of small holes 411a made of an insulating material such as polypropylene (PP) on the entire surface, and the inner periphery of the mounting opening 462 of the flow rate adjusting plate 424 to the water purifier housing 460. A circular shape having a diameter corresponding to the upper end of the surface or outer isolation cylinder 415 is formed. The upper separation screen 411 is interposed between the flow rate adjusting plate 424 and the base metal body 412 and the noble metal body 414 so that the flow rate adjusting plate 424 is not in direct contact with the upper end surface of the base metal body 412 and the upper end surface of the noble metal body 414. Isolate. On the other hand, the lower isolation mesh plate 416 is a circular sheet material in which a large number of small holes 416a made of an insulating material such as polypropylene (PP) are formed on the entire surface, like the upper isolation mesh plate 411, and the water purifier housing 460 is provided. A circular shape having a diameter corresponding to the inner peripheral surface of the step portion 468 or the lower end of the outer isolation mesh cylinder 415 is formed. The lower isolation screen 416 is interposed between the cap 464 and the base metal body 412 and the noble metal body 414 so that the inner surface of the cap 464 does not directly contact the lower end surface of the base metal body 412 and the lower end surface of the noble metal body 414. Isolate.

The inner isolation mesh cylinder 413 has a shape other than the cylindrical shape as long as the base metal body 412 and the noble metal body 414 that are in contact and supported on the inner peripheral surface and the outer peripheral surface are isolated so as not to be in direct contact with each other. For example, it may be a cylindrical body having a planar C shape with a part of the cylindrical shape cut out in the length direction or a cylindrical body having a planar polygonal shape, or may be formed in a band shape on the outer peripheral surface of the base metal body 412. You may make it wind in a coil shape. Similarly, the shape of the outer isolation mesh cylinder 415 can be changed as long as the noble metal body 414 and the water purifier housing 460 that are in contact with and supported on the inner peripheral surface and the outer peripheral surface are isolated so as not to be in direct contact with each other. As described above, when a part of the inner isolation mesh cylinder 413 is cut out, it becomes a flat circular cylinder by bending, or the cutout part is expanded to form a large-diameter plane C-shaped cylinder. It can be done.

Moreover, as long as the base metal body 412 and the noble metal body 414 are isolated so that the base metal body 412 and the noble metal body 414 may not contact directly with the flow volume adjusting plate 424, the upper side separating net 411 may make the flow volume adjusting plate 424 to the water purifier housing 460 into a shape other than a circle. For example, it may be a polygonal shape such as a rectangular shape or a pentagonal shape, an elliptical shape, or a design shape such as a star shape. Similarly, the shape of the lower separating net plate 416 can be changed as long as the base metal body 412 and the noble metal body 414 are isolated so as not to directly contact the flow rate adjusting plate 424. On the other hand, the adapter for water purifier of this embodiment, instead of the combination of the base metal body 412 and the noble metal body 414, is a combination of a columnar base metal body and a chrysanthemum or star-shaped noble metal body as shown in FIG. In any case, a sufficient flow rate of purified water can be secured by the effects described in the embodiments of FIGS.

[Assembly method]
As shown in FIGS. 16 and 17, first, the flow rate adjusting plate 424 is inserted into the upstream straight portion 466 of the “let” -shaped bent water passage from the mounting port 462 in the water purifier housing 460, and the water passage. It arrange | positions in the end surface of the bottom part (upstream end opening part 468) of the level | step-difference part of an upstream end (upstream end of the upstream linear part 466), and then sterilization unit 410 (upstream side isolation net plate 416, base metal body 412, inner side isolation net | network) The cylinder 413, the noble metal body 414, the outer isolation net cylinder 415, and the downstream isolation net plate 411) are inserted into the upstream straight portion 466 of the water channel and accommodated. At this time, you may accommodate in the upstream linear part 466 of a water flow path in the state which assembled the sterilization unit 410 whole. Or you may accommodate each component separately and assemble in the upstream linear part 466 of a water flow path. In this case, for example, first, the upstream isolation mesh plate 416 is accommodated in the upstream linear portion 466 of the water passage and is stacked on the flow rate adjustment plate 424, and then the outer isolation mesh tube 415 is passed through the upstream straight portion of the water passage. 466. Next, after inserting the noble metal body 414 into the outer isolation net cylinder 415, the inner isolation net cylinder 413 is inserted into the noble metal body 414, and then the base metal body 412 is inserted into the inner isolation net cylinder 413. Thereafter, the downstream separating net plate 411 is accommodated in the upstream linear portion 466 of the water channel. Finally, the spacer net 465 is inserted and arranged along the inner peripheral surface of the upstream straight line portion 466 of the water channel (on the upstream side of the sterilization unit 410), and the female screw on the inner peripheral surface of the cap 464 is inserted into the male surface on the outer peripheral surface of the mounting port 462. The sterilization unit 410 and the spacer net 465 are held in the straight portion 466 on the upstream side of the water passage of the water purifier housing 460 by being screwed into the screw.

[Operation / Effect of Sterilization Unit 410]
Hereinafter, the operation and effect of the water purifier adapter sterilization unit 410 as the water sterilizer according to Embodiment 5 of the present invention will be described.
When the purified water W flows from the water purifier through the water passage 461 of the water purifier housing 460 through the water purifier inlet 461, the purified water W reaches the flow rate adjusting plate 424 through the circular opening at the upstream end of the water passage (upstream straight portion) 466. The sterilization unit 410 enters from the flow rate adjustment hole 424a of the flow rate adjustment plate 424. After entering the sterilization unit 410, the purified water W enters the gap between the outer peripheral surface of the base metal body 412 and the inner peripheral surface of the noble metal body 414 through the numerous small holes 416 a of the upstream side separation net plate 416. At this time, although the inner isolation net cylinder 413 is interposed between the base metal body 412 and the noble metal body 414, the clean water W enters the gap between the tangent lines or between the contact points because it contacts the lines or dots. . Further, the purified water W also enters into a large number of small holes 413 a of the inner isolation screen 413. Furthermore, the concave groove 412a of the base metal body 412 promotes water flow. Thus, the purified water W enters the entire area between the outer peripheral surface of the base metal body 412 and the inner peripheral surface of the noble metal body 414. At this time, due to the difference in ionization tendency (potential difference) between the base metal body 412 and the noble metal body 414, a local battery is formed between the base metal body 412 and the noble metal body 414 via the purified water W, so-called corrosion battery action (sacrificial). Metal ions (Zn ions and Mg ions) are eluted into the purified water W from the base metal body 412 due to the anticorrosive action. The eluted metal ions sterilize the purified water W and replenish minerals. Thereafter, the purified water W containing metal ions flows to the downstream straight portion 467 through the spacer network 465 portion (bent portion) of the upstream straight portion 466 of the water passage, and finally from the purified water outlet 463 to the inside of the purified water hose. Discharged.

[Bactericidal effect]
Certain metal ions such as Zn ions and Mg ions have a bactericidal action in water. In particular, Mg ions have a strong bactericidal action. Therefore, according to the water purifier adapter of the present embodiment, various bacteria such as general bacteria and Escherichia coli in the purified water can be sterilized by Zn ions and Mg ions eluted in the purified water. In particular, according to the sterilization unit 410 of the present embodiment, it was confirmed that the sterilization effect is exhibited even in the case of continuous water flow. In addition, since the purified water removes chlorine from the raw water, when water stays at the time of stoppage of water and the like, bacteria are more likely to propagate than in the case of the raw water. Thus, the bacteria in the staying water can be sterilized with certainty.

[Adjustment and control of ion elution volume]
According to the water purifier adapter of the present embodiment, the sterilization unit 410 is changed from the flow rate adjustment hole 424a by increasing or decreasing the shape of the flow rate adjustment hole 424a of the flow rate adjustment plate 424 in the same manner as in the first and second embodiments. The amount of inflow of the purified water W entering the inside is adjusted, and the amount of outflow from the flow rate adjustment hole 424a of the purified water W containing metal ions eluted from the base metal body 412 in the sterilization unit 410 (inflow amount into the water discharge pipe) Can be adjusted. Therefore, with the flow rate adjusting plate 424, among the metal ions in the purified water W, even for Zn having a reference value based on the water quality standard for drinking water such as tap water and purified water, the content is reliably controlled to be below the reference value. can do.

[Elution of bactericidal components in fully ionized state]
Since the base metal body 412 and the noble metal body 414 are separated and held at regular intervals by line contact or point contact by the inner isolation net 413, only metal ions are eluted from the base metal body 412, and (granular) metal does not flow out.

Embodiment 6
Hereinafter, a PET bottle adapter as a water sterilizer according to Embodiment 6 of the present invention will be described. As shown in FIG. 18, the water sterilizer according to Embodiment 6 is embodied in a PET bottle adapter that is used by being detachably attached to the drinking port P1 of the PET bottle P. The PET bottle adapter includes a PET bottle adapter body 570, and a PET bottle adapter case 580 that engages in the PET bottle adapter 570 and accommodates the base metal body 512, the inner isolation net tube 513, and the noble metal body 514 therein. Consists of.

The PET bottle adapter body 570 has a cap shape that can be screwed into the drinking port P1 of the PET bottle P, and is made of plastic or the like. The adapter body 570 for the PET bottle is radially attached to the outer periphery of the mounting portion 571 formed on the inner surface with a female screw that is screwed into the drinking port P1 of the PET bottle P, and the base end of the mounting portion 571 (the side opposite to the female screw). And a flange-like surface support portion 572 that is integrally formed by overhanging. The inner surface of the mounting portion 571 has a stepped shape, and the outer peripheral side (the front end side having the opening) is a large-diameter female screw portion 573 formed on the inner peripheral surface with a female screw that is screwed into the drinking hole P1 of the PET bottle P. The inner peripheral side (base end side) is a small-diameter female screw-like accommodation portion 577 in which a female screw 574 that is screwed with the male screw 584 of the adapter case 580 is formed on the inner peripheral surface. One end of the cylindrical portion of the adapter case 580 (which accommodates the base metal body 512, the inner isolation net tube 513, and the noble metal body 514) is screwed into the female screw-shaped housing portion 577 and attached. The dimension between the inner peripheral surface of the female screw part 573 and the inner peripheral surface of the female screw-like accommodation part 577 (step surface 575) is set to a dimension in which the drinking mouth P1 of the PET bottle P can be inserted. The surface support part 572 is a flat surface having a sufficient area to support the PET bottle P filled with water in the reverse direction at the base end (opposite side of the attachment part).

[Adapter case for PET bottle]
The PET bottle adapter case 580 is made of an electrically insulating material such as polypropylene (PP), and has a cylindrical part 583 having a circular opening at one end and a hollow hemispherical part 581 integrally formed at the other end, forming a semicylindrical slit as a whole. It is a hollow body with a (long hole). The PET bottle adapter case 580 constitutes an outer isolation member, and a plurality of slits 582 extending in the axial direction from the cylindrical portion 583 to the hemispherical portion 581 are formed at predetermined angular intervals (constant intervals in the circumferential direction). The inside of the PET bottle adapter case 580 has an inner diameter corresponding to the outer diameter of the noble metal body 514 so that the outer peripheral surface of the noble metal body 514 and the inner peripheral surface of the female screw-like accommodation portion 577 of the adapter main body 570 are not in direct contact with each other. Isolate. The adapter case 580 for the PET bottle is supported by contacting the inner surface side of the noble metal body 514 with a plurality of support lines or a plurality of support points in a linear or dotted manner. Further, a male screw is formed on the outer peripheral surface of one end of the cylindrical portion 583 and is screwed into the female screw 576 of the female screw-like accommodation portion 577 of the PET adapter main body 570.

[Sterilization unit]
In the PET bottle adapter according to the sixth embodiment, a columnar base metal body 512 and a cylindrical noble metal body 514 are coaxially overlapped via an inner isolation net cylinder 513. The configurations of the base metal body 512, the inner isolation net cylinder 513 and the noble metal body 514 are the same as those of the base metal body 12, the inner isolation net cylinder 13 and the noble metal body 14 of the first and second embodiments. That is, in the PET bottle adapter sterilization unit 610 according to the sixth embodiment, the PET bottle adapter case 580 made of an electrically insulating material such as resin functions in the same manner as the outer isolation screen cylinder and the upper isolation screen, and the like. The surface support portion 572 of the PET bottle adapter body 570 made of the above-mentioned electrically insulating material functions in the same manner as the lower isolation mesh plate to prevent the base metal body 512 and the like from directly contacting a conductor such as metal. Therefore, the outer isolation screen cylinder, the upper isolation screen plate, and the lower isolation screen plate are not required. Therefore, as in the above embodiment, the PET bottle adapter case 580 and the PET bottle adapter main body 570 functioning as isolation members are respectively in line contact with the base metal body 512, the noble metal body 514, or the opposing surface of the counter member. It is preferable to provide irregularities or protrusions so as to support and support them by point contact.

[Assembly method]
The PET bottle adapter is assembled by inserting the inner isolation net cylinder 513 into which the base metal body 512 is inserted into the noble metal body 514 and inserting it into the adapter case 580. At this time, the adapter case 580 functions as the upper isolation mesh plate and the outer isolation mesh cylinder of the first to fifth embodiments so that the base metal body 512 and the noble metal body 514 are not in direct contact with other members on the upper end surface or the outer peripheral surface. The base metal body 512, the inner isolation net tube 513, and the noble metal body 514 are integrated into the PET bottle adapter body 570. Next, the adapter case 580 in the assembled state is screwed into the female screw-like accommodation portion 577 of the adapter main body 570 and attached. Thereby, the adapter case 580 which accommodated the base metal body 512, the inner side isolation net cylinder 513, and the noble metal body 514 is integrated with the adapter main body 570, and becomes a sterilization unit. Then, the female screw portion 573 of the adapter main body 570 is screwed onto the drinking port P1 of the PET bottle P and attached.

[Operation and effect of sterilization unit]
At the time of use (during sterilization / mineral elution) shown in FIG. 21B, the PET bottle P is turned upside down (inverted), and the surface support portion 572 of the adapter body 570 is placed and supported on a flat surface. Then, the water W in the PET bottle P enters the adapter case 580 from the drinking hole P1 through the slit 582 of the adapter case 580. After entering the adapter case 580, the water W enters the gap between the outer peripheral surface of the base metal body 512 and the inner peripheral surface of the noble metal body 514. At this time, the inner isolation net cylinder 513 is interposed between the base metal body 512 and the noble metal body 514, but since it is in contact with the line or dot, the raw water W enters the gap between the tangents or between the contacts. . Further, the water W also enters into a large number of small holes in the inner isolation mesh plate 513 having a mesh tube shape. Thus, the water W enters the entire area between the outer peripheral surface of the base metal body 512 and the inner peripheral surface of the noble metal body 514. At this time, due to the difference in ionization tendency (potential difference) between the base metal body 512 and the noble metal body 514, a local battery is formed between the base metal body 512 and the noble metal body 514 via the raw water W, so-called corrosion battery action (sacrificial). Metal ions (Zn ions and Mg ions) are eluted from the base metal body 512 by the anticorrosion action). The eluted metal ions sterilize the water W and replenish minerals. As shown in FIG. 21A, when the PET bottle P is upright after a certain period of time, the sterilization unit is not in contact with the water W, and the elution of metal ions is stopped.

[Complete ionization state]
Since the base metal body 512 and the noble metal body 514 are separated and held at a constant interval by line contact or point contact by the inner isolation net 513, only metal ions are eluted from the base metal body 512, and (granular) metal does not flow out.

[Bactericidal action]
By sterilizing in water with specific metal ions such as Zn ions and Mg ions, bacteria in water are surely sterilized and essential mineral components are replenished.

Embodiment 7
Hereinafter, a polytank adapter as a water sterilizer according to Embodiment 7 of the present invention will be described. As shown in FIG. 22, the water sterilizer according to Embodiment 7 is embodied in a polytank adapter that is fitted to the spout PE1 of the polytank PE and detachably attached. The polytank adapter includes a polytank adapter main body 670 and a polytank adapter case 680 that engages in the polytank adapter main body 670 and accommodates a base metal body 612, an inner isolation net tube 613, and a noble metal body 614 therein.

The poly tank adapter main body 670 has a cap shape that can be screwed into the spout of the poly tank PE, and is made of plastic or the like. The polytank adapter main body 670 includes an attachment portion 671 in which a female screw 674 that engages with the spout PE1 of the polytank PE is formed on the inner surface. The inner surface of the mounting portion 671 has a stepped shape, and the outer peripheral side (the front end side having an opening) has a large-diameter female screw portion 673 formed on the inner peripheral surface with a female screw 674 that is screwed into the spout PE1 of the polytank PE. The inner peripheral side (base end side) is a small-diameter female screw-like storage portion 677 formed on the inner peripheral surface with a female screw 676 that is screwed with the male screw 684 of the poly tank adapter case 680. One end of the cylindrical portion 683 of the polytank adapter case 680 (which accommodates the base metal body 612, the inner isolation net cylinder 613, and the noble metal body 614) is screwed into the female screw-like accommodation portion 677 and attached. The dimension between the inner peripheral surface of the female screw part 673 and the inner peripheral surface of the female screw-like accommodation part 677 (step surface 675) is set to a dimension that allows the spout PE1 of the polytank PE to be inserted.

[Poly tank adapter case]
The poly tank adapter case 680 is made of an electrically insulating material such as polypropylene (PP). The poly tank adapter case 680 is a hollow body with a slit (long hole) as a whole in which a cylindrical portion 683 has a circular opening at one end and a hollow hemispherical portion 681 integrally formed at the other end. The poly tank adapter case 680 constitutes an outer isolation member, and a plurality of slits 682 extending in the axial direction from the cylindrical portion 683 to the hemispherical portion 681 are formed at predetermined angular intervals. The inside of the polytank adapter case 680 has an inner diameter corresponding to the outer diameter of the noble metal body 614 and is isolated so that the outer peripheral surface of the noble metal body 614 and the inner peripheral surface of the female screw-like accommodation portion 677 of the polytank adapter body 670 are not in direct contact. . The inner side of the polytank adapter case 680 is supported in contact with the outer peripheral surface of the noble metal body 614 in a linear or dotted manner by a plurality of support lines or a plurality of support points. Further, a male screw 684 is formed on the outer peripheral surface of one end portion of the cylindrical portion 683 and is screwed into the female screw 676 of the female screw-like accommodation portion 677 of the polytank adapter main body 670.

[Sterilization unit]
In the polytank adapter according to the seventh embodiment, a columnar base metal body 612 and a cylindrical noble metal body 614 are coaxially overlapped via an inner isolation net cylinder 613. The configurations of the base metal body 612, the inner isolation net cylinder 613 and the noble metal body 614 are the same as those of the base metal body 12, the inner isolation net cylinder 13 and the noble metal body 14 of the first and second embodiments. That is, in the polytank adapter sterilizing unit 710 according to the seventh embodiment, the polytank adapter case 680 made of an electrically insulating material such as a resin functions in the same manner as the outer isolation screen cylinder and the upper isolation screen, and an electrically insulating material such as a resin. The bottom wall of the polytank adapter body 670 is made to function in the same manner as the lower isolation screen, so that the base metal body 612 and the like can be prevented from coming into direct contact with a conductor such as metal to reliably prevent these outer isolations. The net cylinder, the upper isolation screen, and the lower isolation screen are not required.

[Assembly method]
As shown in FIG. 25, in the polytank adapter, the inner isolation net cylinder 613 having the base metal body 612 inserted therein is inserted into the noble metal body 614 and assembled, and then inserted into the adapter case 680 to be accommodated. At this time, the adapter case 680 functions as an outer isolation net tube. Next, the adapter case 680 in an assembled state is screwed into the female screw accommodation portion 677 of the adapter main body 670 and attached. Thereby, the adapter case 680 containing the base metal body 612, the inner isolation net cylinder 613, and the noble metal body 614 is integrated with the adapter main body 670 to form a sterilization unit. And the female screw part 673 of the adapter main body 670 is screwed and attached to the spout PE1 of the poly tank PE.

[Operation and effect of sterilization unit]
At the time of use (during sterilization / mineral elution) shown in FIG. 25 (b), the polytank PE is turned upside down (inverted), and the upper surface (surface support part) of the polytank PE is placed on and supported by a flat surface. Then, the water W in the polytank PE enters the adapter case 680 from the spout PE1 through the slit 682 of the adapter case 680. After entering the adapter case 680, the water W enters the gap between the outer peripheral surface of the base metal body 612 and the inner peripheral surface of the noble metal body 614. At this time, although the inner isolation net cylinder 613 is interposed between the base metal body 612 and the noble metal body 614, it contacts with them linearly or in a dot shape, so that the raw water W enters the gap between the tangent lines or between the contact points. . Further, the water W also enters into a large number of small holes in the inner isolation net plate 613 having a net tube shape. Thus, the water W enters the entire region between the outer peripheral surface of the base metal body 612 and the inner peripheral surface of the noble metal body 614. At this time, due to the difference in ionization tendency (potential difference) between the base metal body 612 and the noble metal body 614, a local battery is formed between the base metal body 612 and the noble metal body 614 via the raw water W, so-called corrosion battery action (sacrifice). Metal ions (Zn ions and Mg ions) are eluted from the base metal body 612 by the anticorrosive action). The eluted metal ions sterilize the water W and replenish minerals. As shown in FIG. 25 (a) after a certain period of time, when the polytank PE is upright, the sterilization unit is not in contact with the water W, and the elution of metal ions is stopped. As the polytank PE, it is preferable to use one whose upper end surface is a flat surface having a sufficient area to support in the reverse direction with water W filled therein.

[Complete ionization state])
Since the base metal body 612 and the noble metal body 614 are separated and held at a constant interval by line contact or point contact by the inner isolation net 613, only metal ions are eluted from the base metal body 612, and (granular) metal does not flow out.

[Bactericidal action]
By sterilizing in water with specific metal ions such as Zn ions and Mg ions, bacteria in water are surely sterilized and essential mineral components are replenished.

Embodiment 8
Hereinafter, a float adapter as a water sterilizer according to Embodiment 8 of the present invention will be described. As shown in FIGS. 26 to 27, the water sterilizer according to the eighth embodiment is embodied in a float adapter that is detachably attached to an attachment portion formed on the lower surface of the float F. The float adapter includes a float adapter main body 790 and a sterilization unit 710 accommodated in the float adapter main body 790.

[Float and adapter body for float]
The float F is made of a material having a buoyancy with respect to water, such as a foamed resin or a hollow resin, and has, for example, a shape and design imitating an animal such as a duck, as shown in the illustrated example. The float F is made of a material having buoyancy with respect to water, and can have any shape and design as long as the float adapter body 790 can be detachably attached. As shown in FIGS. 28 and 29, the float adapter main body 790 has a bottomed cylindrical net shape with a lower end closed as a circular bottom wall and an upper end opened as a circular upper end opening 791a. A male screw 791 is formed on the outer peripheral surface of the upper end portion of the float adapter main body 790. On the other hand, on the bottom surface side of the float F, a pair of recessed mounting portions F1 having a short circular cross section corresponding to the outer peripheral surface of the upper end portion of the float adapter main body 790 are formed on the front and rear sides. A female screw into which the male screw 791 can be screwed is formed on the inner peripheral surface. A pair of float adapter bodies 790 are detachably attached to the front and rear of the float F by screwing the male screw 791 of the float adapter body 790 into the attachment portion F1 of the float F.

[Sterilization unit 710]
As shown in FIG. 30, the sterilization unit 710 includes an upper isolation net 711, an inner base metal body 712, a first inner isolation net cylinder 713, an inner noble metal body 714, a second inner isolation net cylinder 715, an outer base metal body 716, a first The outer isolation net cylinder 717, the outer noble metal body 718, the second outer isolation net cylinder 719, and the lower isolation net plate 720 have a shape corresponding to the space in the float adapter body 790 as a whole. That is, the sterilization unit 710 is configured by coaxially arranging the inner base metal body 712, the inner noble metal body 714, the outer base metal body 716, and the outer noble metal body 718, and has a cylindrical shape as a whole. At this time, the inner base metal body 712, the inner noble metal body 714, the outer base metal body 716, and the outer noble metal body 718 are not separated from each other, so that there is an isolation net cylinder (first inner isolation net cylinder 713) between them. , Second inner isolation net cylinder 715, first outer isolation net cylinder 717) and a second outer isolation cylinder on the outer peripheral surface of the outer noble metal body 718 so that the outer noble metal body 718 is not in direct contact with other members. 719, and the upper and lower end surfaces of the inner base metal body 712, the inner noble metal body 714, the outer base metal body 716, and the outer noble metal body 718, which are overlapped so as to form a coaxial multistage cylinder, (Upper isolation screen 711, lower isolation screen 720) are mounted. That is, an isolation net (isolation net cylinder or isolation net plate) is arranged on the entire surface of each of the inner base metal body 712, the inner noble metal body 714, the outer base metal body 716, and the outer noble metal body 718.

The upper isolation mesh plate 711 is a sheet material having a circular mesh plate shape in which a large number of small holes 711a made of an insulating material such as polypropylene (PP) are formed on the entire surface, like the upper isolation mesh plate 11 of the above-described embodiment. And has a circular shape with a diameter corresponding to the upper end of the float adapter body 790. The upper isolation screen 711 isolates the attachment F1 of the float adapter main body 790 of the float F from the upper end surface of the inner base metal body 712, the upper end surface of the outer base metal body 716, and the like. The inner base metal body 712 is a cylindrical body made of a zinc-magnesium alloy having a zinc (Zn) ratio of 95% or more (less than 5% magnesium (Mg)), like the base metal body 12 of the above embodiment. In addition, the first inner isolation screen cylinder 713 has circular openings at both upper and lower ends formed with a large number of small holes 713a made of an insulating material such as polypropylene (PP) like the inner isolation screen cylinder 13 of the above embodiment. The sheet material has a cylindrical mesh tube shape, and has a cylindrical shape with an inner diameter corresponding to the outer diameter of the inner base metal body 712. The first inner isolation net cylinder 713 isolates the outer peripheral surface of the inner base metal body 712 and the inner peripheral surface of the inner noble metal body 714 from being in direct contact with each other. In other words, the first inner isolation net tube 713 is supported in contact with the outer peripheral surface of the inner base metal body 712 in a linear or dotted manner by a plurality of support lines 713b or a plurality of support points. Further, the first inner isolation net cylinder 713 is supported in contact with the inner peripheral surface of the inner noble metal body 714 in a linear or dotted manner by a plurality of support lines 713b or a plurality of support points.

The inner noble metal body 714 is a cylindrical body made of a stainless alloy (SUS), like the noble metal body 14 of the above embodiment, and has an inner diameter larger than that of the inner base metal body 712. The inner noble metal body 714 has a substantially entire inner peripheral surface opposed to a substantially entire outer peripheral surface of the inner base metal body 712 with the first inner isolation net cylinder 713 interposed therebetween. The inner noble metal body 714 is formed with a plurality of slits 714a extending in the axial direction at predetermined angular intervals (constant intervals in the circumferential direction). In addition, instead of the inner noble metal body 714 with slits as shown in FIG. 30, an inner noble metal body having a spiral ring shape or a coil spring shape may be used (for example, see FIG. 58D described later). Further, the second inner isolation net cylinder 715 has a configuration in which the first inner isolation net cylinder 713 has a large diameter, and has upper and lower ends formed with a large number of small holes 715a made of an insulating material such as polypropylene (PP). It is a sheet material that forms a cylindrical mesh tube having a circular opening, and has a cylindrical shape with an inner diameter corresponding to the outer diameter of the inner noble metal body 714. The second inner isolation mesh cylinder 715 is isolated so that the outer peripheral surface of the inner noble metal body 714 and the inner peripheral surface of the outer base metal body 716 are not in direct contact with each other. That is, the second inner isolation mesh cylinder 715 is supported in contact with the outer peripheral surface of the inner noble metal body 714 in a linear or dotted manner by a plurality of support lines 715b or a plurality of support points. Further, the second inner isolation mesh cylinder 715 is supported by contacting the inner peripheral surface of the outer base metal body 716 in a linear or dotted manner with a plurality of support lines 715b or a plurality of support points.

The outer base metal body 716 is a cylindrical body made of a zinc-magnesium alloy having a zinc (Zn) ratio of 95% or more (less than 5% magnesium (Mg)), like the noble metal body 14 of the above embodiment. It has an inner diameter larger than 714. On the inner peripheral surface, the substantially entire surface is opposed to the substantially entire outer peripheral surface of the inner base metal body 712 with the first inner isolation net cylinder 713, the inner noble metal body 714, and the second inner isolation net cylinder 715 interposed therebetween. The first outer isolation screen cylinder 717 has a configuration in which the second inner isolation screen cylinder 715 has a larger diameter, and has upper and lower ends formed with a large number of small holes 717a made of an insulating material such as polypropylene (PP). It is a sheet material that forms a cylindrical mesh tube having a circular opening, and has a cylindrical shape with an inner diameter corresponding to the outer diameter of the outer base metal body 716. The first outer isolation net cylinder 717 isolates the outer peripheral surface of the outer base metal body 716 and the inner peripheral surface of the outer noble metal body 718 from being in direct contact with each other. In other words, the first outer isolation mesh cylinder 717 is supported in contact with the outer peripheral surface of the outer base metal body 716 in a linear or dotted manner by a plurality of support lines 717b or a plurality of support points. In addition, the first outer isolation mesh cylinder 717 is supported in contact with the inner peripheral surface of the outer noble metal body 718 in a linear or dotted manner by a plurality of support lines 717b or a plurality of support points.

The outer noble metal body 718 is a cylindrical body made of stainless steel (SUS) like the inner noble metal body 714 and has a cylindrical shape with a larger diameter than the inner noble metal body 714. The outer precious metal body 718 has a substantially entire inner peripheral surface facing a substantially entire outer peripheral surface of the outer base metal body 716 with the first outer isolation net cylinder 717 interposed therebetween. The outer noble metal body 718 is formed with a plurality of slits 718a extending in the axial direction at a predetermined angular interval (a constant interval in the circumferential direction), preferably at the same interval as the interval between the slits 714a of the inner noble metal body 714. The outer noble metal body 718 has an inner diameter larger than that of the outer base metal body 716 and an outer diameter smaller than that of the float adapter body 790, and is interposed between the outer base metal body 716 and the float adapter body 790. . At this time, the outer noble metal body 718 has a first outer isolation net cylinder 717 interposed between the inner base metal body 716 on the inner peripheral surface side and a second between the float adapter main body 790 on the outer peripheral surface side. An outer isolation net cylinder 719 is interposed.

The second outer isolation net cylinder 719 has a configuration in which the first outer inner isolation net cylinder 717 has a large diameter, and a plurality of small holes 719a made of an insulating material such as polypropylene (PP) are formed on the entire upper and lower ends. It is a sheet material having a cylindrical mesh tube shape as an opening, and has a cylindrical shape with an inner diameter corresponding to the outer diameter of the outer noble metal body 718. The second outer isolation mesh cylinder 719 isolates the outer peripheral surface of the outer noble metal body 718 and the inner peripheral surface of the float adapter main body 790 so as not to directly contact each other. In other words, the second outer isolation mesh cylinder 719 is supported in contact with the outer peripheral surface of the outer noble metal body 718 in a linear or dotted manner by a plurality of support lines 719b or a plurality of support points. Further, the second outer isolation screen cylinder 719 is supported in contact with the inner peripheral surface of the float adapter body 790 in a linear or dotted manner by a plurality of support lines 719b or a plurality of support points. Further, the lower isolation mesh 720 is a circular mesh plate having a plurality of small holes 720a made of an insulating material such as polypropylene (PP) formed on the entire surface, like the lower isolation mesh 16 in the above embodiment. And has a circular shape with a diameter corresponding to the lower end (bottom wall) inside the float adapter main body 790. The lower isolation screen 720 isolates the inner peripheral surface and bottom surface of the float adapter main body 790 so that the inner base metal body 712, the inner noble metal body 714, the outer base metal body 716, and the lower end surface of the outer noble metal body 718 are not in direct contact with each other. . Here, the isolation screen cylinders (first inner isolation network cylinder 713, second inner isolation network cylinder 715, first outer isolation network cylinder 717) and isolation network boards (upper isolation network board 711, lower isolation network board 720) are , Each of which has a disk shape and a cylindrical shape formed from a sheet material in which a large number of small holes 711a made of an electrically insulating material such as polypropylene (PP) are formed on the entire surface, as described above, from the inner base metal body 712 Any other configuration can be employed as long as electrical insulation between the metal bodies up to the outer noble metal body 718 and electrical insulation with other members such as the float adapter main body 790 can be ensured. The float adapter body 790 may be formed of a conductive material such as a metal material because the upper isolation screen 711, the second outer isolation screen cylinder 719, and the lower isolation screen 720 are provided. When the adapter main body 790 itself is made of an electrically insulating material, the second outer isolation screen cylinder 719 and the lower isolation screen 720 can be omitted.

[Dimension and shape of sterilization unit]
Sterilization unit (upper isolation net plate 711, inner base metal body 712, first inner isolation net cylinder 713, inner noble metal body 714, second inner isolation net cylinder 715, outer base metal body 716, first outer isolation net cylinder 717, outer noble metal The size and shape of the body 718, the second outer isolation screen cylinder 719, and the lower isolation screen plate 720) 710 correspond to the internal shape of the float adapter body 790, and the entire inside of the float adapter body 790 What is necessary is just the dimension and shape accommodated over. For example, the inner base metal body 712, the first inner isolation net cylinder 713, the inner noble metal body 714, the second inner isolation net cylinder 715, the outer base metal body 716, the first outer isolation net cylinder 717, and the outer noble metal body 718 are adapters for floats. It has a height that is slightly lower than the internal space of the case 790 (a height that is smaller by the upper and lower separation screen plates 711 and 720). Further, the outer diameter of the second outer isolation screen cylinder 719 and the diameters of the upper and lower isolation screen plates 711 and 720 correspond to the inner diameter of the float adapter body 790. The float adapter body 790 includes a sterilization unit (upper isolation net plate 711, inner base metal body 712, first inner isolation net cylinder 713, inner noble metal body 714, second inner isolation net cylinder 715, outer base metal body 716, first 1 is a bottomed cylindrical body made of a metal such as plastic or stainless steel that accommodates an outer isolation mesh cylinder 717, an outer noble metal body 718, a second outer isolation mesh cylinder 719, and a lower isolation mesh board 720) 710 inside. It is attached to a mounting portion F1 formed on the bottom surface.

[Assembly method]
As shown in FIGS. 30 to 32, the sterilization unit (upper isolation net plate 711, inner base metal body 712, first inner isolation net cylinder 713, inner noble metal body 714, second inner isolation net cylinder 715, outer base metal body 716, first (1) An outer isolation net cylinder 717, an outer noble metal body 718, a second outer isolation net cylinder 719, and a lower isolation net plate 720) 710 are inserted into the float adapter main body 790 and accommodated. At this time, you may accommodate in the adapter body 790 for a float in the state which assembled the whole sterilization unit 710. FIG. Alternatively, each component may be individually accommodated and assembled in the float adapter body 790. In this case, for example, first, the lower isolation net plate 726 is accommodated in the float adapter main body 790, and then the second outer isolation net cylinder 719 is accommodated in the float adapter main body 790. Next, the outer noble metal body 718 is inserted into the second outer isolation net cylinder 719, the first outer isolation net cylinder 717 is inserted into the outer noble metal body 718, and the outer base metal body 716 is inserted into the first outer isolation net cylinder 717. , The second inner isolation net cylinder 715 is inserted into the outer base metal body 716, the inner noble metal body 714 is inserted into the second inner isolation net cylinder 715, and the first inner isolation net cylinder is inserted into the inner noble metal body 714. 713 is inserted, and then the inner base metal body 712 is inserted into the inner isolation net tube 713. Finally, the upper isolation screen 711 is accommodated in the float adapter main body 790, the male screw portion 791 of the float adapter main body 790 is screwed into the attachment hole of the float F, and the float adapter main body 790 is attached. The sterilization unit 710 is held in the adapter main body 790.

[Mounting to float F]
The sterilizing unit 710 is assembled and accommodated in the float adapter main body 790, and the male screw portion 791 of the float adapter main body 790 is screwed and attached to the female screw of the attachment portion F1 formed on the lower end surface of the float F. That is, since a female screw corresponding to the male screw portion 791 of the float adapter main body 790 is formed on the inner peripheral surface of the attachment portion F1, the float adapter main body 790 is screwed into the lower end surface of the float F. It can be detachably attached to.

[Operation and effect of sterilization unit]
When the float F to which the float adapter 790 of Embodiment 8 is attached is poured into the hot water (hot water) in the bath tub, the float F to which the float adapter 790 is attached rises from the hot water surface by the float F having buoyancy. At the same time, the float adapter 790 is immersed in warm water. Then, hot water in the bathtub enters the sterilization unit 710 inside the float adapter 790 through the mesh-shaped outer peripheral surface (mesh of the peripheral wall) and the lower end surface (mesh of the bottom wall) of the float adapter main body 790 ( The same applies to cold water before boiling in the bathtub). At this time, the hot water that has entered from the outer peripheral surface of the float adapter 790 passes through the small hole 719a of the second outer isolation net cylinder 719, passes through the slit 718a of the outer noble metal body 718, and reaches the first outer isolation net cylinder 717. Through the small holes 717a and the gaps between the contact lines or contact points, the entire gap space between the outer base metal body 716 and the outer noble metal body 718 enters and is uniformly fluidized. In addition, a part of the hot water that has entered from the lower end (bottom wall) of the float adapter 790 passes through the contact line of the first outer isolation screen cylinder 717 or the gap between the contact points, and the outer base metal body 716 again. The entire gap space between the outer noble metal body 718 and the fluid is uniformly filled. On the other hand, a part of the hot water that has entered the inside from the lower end (bottom wall) of the float adapter 790 is connected to the inner noble metal body 714 and the outer base metal via the contact line of the second inner isolation net tube 715 or the gap between the contact points. The inner base metal enters the entire gap space between the body 716, passes through the slit 714a of the inner noble metal body 714, and passes through the small hole 713a of the first inner isolation net tube 713 and the contact line or the gap between the contact points. It enters the entire gap space between the body 712 and the inner noble metal body 714 and is uniformly fluidly filled. Further, a part of the hot water that has entered from the lower end (bottom wall) of the float adapter 790 passes through the contact line of the first inner isolation net tube 713 or the gap between the contact points, and the inner base metal body 712 again. It enters the entire gap space between the inner noble metal body 714 and is uniformly fluidized. Thus, in the sterilization unit 710 in which the base metal bodies 712 and 716 and the noble metal bodies 714 and 718 are coaxially overlapped in two stages inside and outside, the hot water is the whole area between the inner base metal body 712 and the inner noble metal body 714, In addition, they respectively enter the entire area between the outer base metal body 716 and the outer noble metal body 718. At this time, the inner base metal body 712 and the inner noble metal body 712 and the inner noble metal body 714 and the inner base metal body 712 and the inner noble metal body 714 due to the difference in ionization tendency (potential difference) between the outer base metal body 716 and the outer noble metal body 718. A local battery is formed via hot water in the entire area between the noble metal body 714 and between the outer base metal body 716 and the outer noble metal body 718, and the base metal body 712 is formed by a so-called corrosion battery action (sacrificial corrosion prevention action). , 716, metal ions (Zn ions and Mg ions) are eluted in water in a completely ionized state. With this eluted metal ion, sterilization of warm water can be performed. When the float F with the float adapter 790 attached is removed from the bath tub after a certain period of time, the sterilization unit 710 is brought into a non-contact state with the hot water in the bath, and the elution of metal ions is stopped.

Embodiment 9
As shown in FIGS. 33 to 35, the water sterilization apparatus according to the ninth embodiment is embodied as an input-type sterilization apparatus that is charged into stored water stored in a large plastic tank, a bathtub, a small plastic tank, a water tank, or the like. . The input type sterilizer includes adapter bodies 820 and 830 and a sterilization unit 810 (base metal body 812, inner isolation net tube 813 and noble metal body 814) housed inside the input type sterilizer main bodies 820 and 830.

[Adapter body]
The adapter body has a housing 820 and a cap 830. The housing 820 is made of an electrically insulating material such as polypropylene (PP), and has a substantially cylindrical base portion 821 having an upper end surface that is slightly inclined and raised toward the center portion. The entire lower end of the base 821 is opened to form a circular opening. On the peripheral wall of the base portion 821, a plurality of long hole-like slits 821a extending linearly in the vertical direction are formed. The slits 821a are formed so as to penetrate the base 821 in the circumferential direction at a predetermined angular interval (a constant distance in the circumferential direction), and communicate the internal space of the base 821 with the external space. A male screw 821b is formed on the outer peripheral surface of the lower end portion of the base 821. The slit 821a extends from the position of the upper end surface of the base 821 (near the outer periphery of the locking portion 822) to a position just before the male screw 821b. A locking portion 822 is integrally provided at the center of the upper end surface of the base portion 821 by close fitting or integral formation. The locking portion 822 has a substantially short cylindrical shape protruding from the central portion of the upper end surface of the base portion 821 and has a locking groove 822a extending around the circumferential direction at the center of the outer circumferential surface in the height direction. Yes. On the other hand, a cap 830 having a corresponding inner diameter is screwed onto the lower end portion of the base portion 821. That is, the cap 830 includes a peripheral wall that is screwed into the male screw 821b of the base 821, and a bottom wall that partially closes the lower end of the peripheral wall. Through-holes 830a, and the internal space of the base 821 communicates with the external space on the bottom side. The housing 820 and the cap 830 can be made of metal such as stainless steel.

[Sterilization unit]
Inside the housing 820, a sterilization unit 810 is fixedly accommodated. The sterilization unit 810 can be obtained, for example, by increasing the size of the sterilization unit 10 of the first embodiment, and the base metal body 12 and the noble metal body 14 of the sterilization unit 10, the upper isolation screen 11, and the inner isolation. The base metal body 812 and the noble metal body 814 having the same configuration as the net cylinder 13, the outer isolation net cylinder 15 and the lower isolation net plate 16, and the upper isolation net plate 811, the inner isolation net cylinder 813, the outer isolation net cylinder 815 and the lower It consists of a side isolation mesh plate 16. That is, the sterilization unit 810 electrically insulates the inner separation net 813 between the base metal body 822 and the noble metal body 814 by line contact or point contact, and uniformly waters the entire gap space between them. It has a configuration. In addition, the entire outer peripheral surface of the noble metal body 814 is covered with an outer isolation net cylinder 815 to prevent contact with the housing 820, and the entire upper and lower end surfaces of the base metal body 812 and the noble metal body 814 are respectively upper isolation nets. Covered by the plate 811 and the lower isolation screen plate 816, contact with the housing 820 and the cap 830 is prevented. The sterilizing unit 810 is assembled in the same manner as the sterilizing unit 10 of the first embodiment, and after being housed inside from the lower end opening of the base portion 821 of the housing 820, the cap 830 is screwed onto the base portion 821 and attached. Thus, the inner upper end of the base portion 821 (the lower end surface of the locking portion 822), the upper surface of the bottom wall of the cap 830 (the portion where the slit 830a is not formed), and the inner surface of the peripheral wall of the base portion 821 are fixed immovably.

[Operation Example 1 and Action and Effect of Sterilization Unit]
For example, as shown in FIG. 34 (a), the charging sterilization apparatus of the ninth embodiment can be used by being immersed in the stored water W inside the large-sized polytank PE. In this case, first, one end of the string-like connecting body C such as a chain is firmly fixed to the locking groove 822a of the locking portion 822 on the upper portion of the housing 820 of the charging type sterilizer, and the string-like connecting body C is fixed. By fixing the other end to the lower surface of the float F made of a disk-like foam or the like, the throwing type sterilizer and the float F are connected by the string-like connecting body C. At this time, the length of the string-like connector C is slightly longer than the maximum water storage height of the polytank PE (for example, a length equivalent to the height of the polytank PE), and the pouring type sterilizer is put into the water of the polytank PE. When this occurs, the float F floats on the water surface, and the throw-in type sterilizer is placed on the bottom surface (underwater) of the polytank PE and placed. Thus, when the cap PC at the upper end of the polytank PE is removed and the pouring sterilizer is poured and immersed in the water of the polytank PE from the water injection hole or drainage hole, the float F floats on the water surface, and the pouring sterilizer becomes the polytank PE. It is placed on the bottom (underwater). Then, the stored water W in the polytank PE passes through the slit 821a of the housing 820 of the charging type sterilizer and enters the sterilization unit 810 inside. That is, the water storage W is small in the inner isolation net cylinder 813 from the small hole 811a of the upper isolation net plate 811 of the sterilization unit 810 and the gap between the contact line or the contact point in the same manner as in the above embodiment. Through the gap between the hole 813a and the contact line or the contact point, the entire gap space between the base metal body 812 and the noble metal body 814 is entered and fluidly filled. Further, the water storage W partially penetrates into the inside of the base 821 from the through hole 830a of the cap 830, and from the gap between the small hole 816a of the lower isolation screen 816 of the sterilization unit 810 and the contact line or contact point. Then, it enters the entire gap space between the base metal body 812 and the noble metal body 814 through the small holes 813a of the inner isolation net cylinder 813 and the gap between the contact lines or contact points, and is uniformly fluidly filled. At this time, similarly to the noble metal bodies 714 and 718 of the eighth embodiment, if a slit is formed in the noble metal body 814, the water storage W that has entered from the slit 821a of the base portion 821 passes through the slit of the noble metal body 814 and is isolated inside. Through the small hole 813a of the mesh tube 813 and the gap between the contact line or the contact point, the entire space between the base metal body 812 and the noble metal body 814 enters and is uniformly fluidly filled. In this way, metal ions (Zn ions and Mg ions) are completely formed from the base metal body 812 in the water W that has entered the entire gap space between the base metal body 812 and the noble metal body 814 and is uniformly fluidly filled. Eluted in an ionic state and exhibits the same bactericidal effect as in the above embodiment, and when mineral water (Polytank PE) is used for drinking, exhibits mineral replenishment effect due to minerals (Zn and Mg) eluted in water be able to.

[Operation Example 2 and Action / Effect of Sterilization Unit]
For example, as shown on the right side of FIG. 34 (b), the charging sterilization apparatus of Embodiment 9 can be used by being immersed in the stored water (warm water) W inside the bathtub B. In this case, as in the case of the first use example, the input type sterilizer is connected to the float F by the string-like connecting body C. The length of the string-like connecting body C is slightly longer than the maximum water storage height of the bathtub B. (For example, a length equivalent to the depth of the bathtub B), and when the throwing-type sterilizer is thrown into the water of the bathtub B, the float F floats on the water surface, and the throwing-type sterilizer is the bottom of the bathtub B. Make sure it is placed on the water (underwater). Thus, when the throwing-type sterilizer is thrown into the water of the bathtub B, the float F floats on the water surface, and the throwing-type sterilizing apparatus is placed on the bottom surface (underwater) of the bathtub B and placed. Then, in the same manner as in the case of Usage Example 1, the water W in the bathtub B enters the entire gap space between the base metal body 812 and the noble metal body 814 and flows from the base metal body 812 into the uniformly fluid-filled water W. Metal ions (Zn ions and Mg ions) are eluted in a complete ion state, and exhibit the same bactericidal effect as in the above embodiment.

[Use Example 3 and Action / Effect of Sterilization Unit]
Alternatively, the charging type sterilization apparatus according to Embodiment 9 is, for example, a charging type in the case where the charging type sterilization apparatus is charged and immersed in the stored water (warm water) W inside the bathtub B as shown on the left side of FIG. The sterilizer can be connected to the suction member G such as a suction cup or a magnet by the string-like connecting body C. In this case, the length of the string-like connecting body C is set to be slightly longer than the maximum water storage height of the bathtub B (for example, a length equivalent to the depth of the bathtub B), and the adsorption member G is connected to the inner surface of the bathtub B. When the throwing type sterilizer is put into the water of the bathtub W by adsorbing to the bottom, the throwing type sterilizer is placed on the bottom surface (underwater) of the bathtub B and placed. In this way, the charging type sterilizer is charged and immersed in the water of the bathtub B, and the adsorbing member G is fixed to the side wall of the bathtub B by vacuum suction or magnetic force adsorption. Place on the floor. Then, in the same manner as in the case of Usage Example 1, the water W in the bathtub B enters the entire gap space between the base metal body 812 and the noble metal body 814 and flows from the base metal body 812 into the uniformly fluid-filled water W. Metal ions (Zn ions and Mg ions) are eluted in a complete ion state, and exhibit the same bactericidal effect as in the above embodiment.

[Use Example 4 and Action / Effect of Sterilization Unit]
For example, as shown in FIG. 35 (a), the charging sterilizer of Embodiment 9 can be used by being immersed in the stored water W inside the small poly tank PE. In this case, one end of the string-like connecting body C is fixed to the charging type sterilizer, and the other end of the string-like connecting body C is fixed to a locking member H such as a hook on the inner surface of the cap PE of the polytank PE. The sterilizer is connected to the cap PC. At this time, the length of the string-like connector C is slightly longer than the maximum water storage height of the polytank PE (for example, a length equivalent to the height of the polytank PE), and the pouring type sterilizer is put into the water of the polytank PE. Then, when the cap PC is attached to the polytank PE, the charging type sterilizer is placed on the bottom surface (underwater) of the polytank PE and placed. Thus, when the charging type sterilization apparatus is charged and immersed in the water of the polytank PE, the charging type sterilization apparatus is placed and placed on the bottom surface (underwater) of the bathtub B. Then, in the same manner as in the case of Usage Example 1, the water W of the polytank PE enters the entire gap space between the base metal body 812 and the noble metal body 814 and flows from the base metal body 812 into the uniformly fluidized water W. Metal ions (Zn ions and Mg ions) are eluted in a complete ionic state, exhibiting the same bactericidal effect as in the above embodiment, and when the water W of the polytank PE is used for drinking, the mineral content eluted in the water (Zn and Mg) can exert a mineral replenishment effect.

[Use Example 5 and Action / Effect of Sterilization Unit]
For example, as shown in FIG. 35 (b), the throwing-type sterilizer according to the ninth embodiment can be used by being soaked in a water storage W inside a water tank T such as a goldfish. In this case, as in the case of the above-described use example 1, the input type sterilizer is connected to the float F by the string-like connecting body C. The length of the string-like connecting body C is slightly longer than the maximum water storage height of the water tank T. (For example, a length equivalent to the height of the water tank T), and when the pouring type sterilizer is put into the water of the water tank T, the float F floats on the surface of the water, and the pouring type sterilizer becomes the bottom surface of the water tank T. Make sure it is placed on the water (underwater). Thus, when the throwing-type sterilizer is thrown into the water of the water tank T, the float F floats on the water surface, and the throwing-type sterilization apparatus is placed on the bottom surface (underwater) of the water tank T and placed. Then, in the same manner as in the case of Usage Example 1, the water W in the water tank T enters the entire gap space between the base metal body 812 and the noble metal body 814 and flows from the base metal body 812 into the uniformly fluid-filled water W. Metal ions (Zn ions and Mg ions) elute in a complete ion state, exhibit the same bactericidal effect as in the above embodiment, and elute into water against life forms O such as goldfish in the aquarium T. The mineral replenishment effect can be exhibited by the mineral content (Zn and Mg). In addition, it is considered that the metal ions eluted in the water can prevent the algae, moss and the like in the water W from breeding, and can prevent the occurrence of parasites on the living organism O such as goldfish.

Embodiment 10
As shown in FIG. 36, the water sterilizer according to the tenth embodiment is embodied in a switching cock adapter built in the switching cock 900. The switching cock 900 can switch water flow to a plurality of flow paths by a handle, but is characterized in that a switching cock adapter is attached to the water outlet. That is, a water discharge cap 950 is detachably attached to the water discharge port of the switching cock 900, the sterilization unit 910 is accommodated in the water discharge cap 950, and water from the water discharge port of the switching cock 900 is passed into the sterilization unit 910. It is designed to flow in and out. As shown in FIG. 37, the water discharge cap 950 is formed by integrally forming a small-diameter cylindrical discharge portion 951 so as to extend downward from the center of the bottom wall of the large-diameter bottomed cylindrical cap portion 952. A female screw 952a is formed on the inner peripheral surface of the peripheral wall, and a circular opening 952b is formed in the center of the bottom wall of the cap portion 952 so as to communicate with a passage (water discharge passage) that is an internal space of the discharge portion 951. A plurality of (three in the illustrated example) strainers 225 are accommodated in the discharge portion 951 of the water discharge cap 950 and placed on the bottom wall thereof, and face the circular discharge port 951a of the discharge portion 951. Yes. Then, the sterilization unit 910 is coaxially accommodated on the strainer 225 inside the discharge unit 951.

[Sterilization unit]
As the sterilization unit 910, a sterilization unit 210 having a larger axial length than that of the second embodiment can be used. That is, the base metal body 912 as the first reactant of the sterilization unit 910 has a chrysanthemum column shape made of the same material as the base metal body 212, and has the same concave groove 912a formed on the outer peripheral surface. Further, the noble metal body 914 as the second reactant has a cylindrical shape made of the same material as the noble metal body 214. Further, the inner isolation net cylinder 913 has the same height as the base metal body 912 and the noble metal body 914 by the same electrical insulating material as the inner isolation net cylinder 213, and a large number of small holes 913a are formed through the entire surface. It is formed in a net-like cylindrical shape. The inner isolation net cylinder 913 is interposed between the base metal body 912 and the noble metal body 914, and is line contacted by the inner peripheral surface and the outer peripheral surface support line 913b, or by point contact at the support point, and the base metal body 912 and the noble metal body. The entire outer peripheral surface of the base metal body 912 and the entire inner peripheral surface of the noble metal body 914 are face-to-face with each other through a gap space formed by the inner isolation net tube 913. Further, the outer isolation mesh cylinder 915 has the same height as the noble metal body 914 by the same electrical insulating material as the outer isolation mesh cylinder 215, and has a net-like cylindrical shape in which a large number of small holes 915a are formed through the entire surface. Formed. The outer isolation mesh tube 915 is interposed between the noble metal body 914 and the inner peripheral surface of the discharge part 951 of the water discharge cap 950, and is line contact by the support line 915b on the inner peripheral surface and the outer peripheral surface or point contact by the support point. Thus, the noble metal body 914 and the discharge part 951 (and the cap part 952 having a larger diameter than the discharge part 951) are isolated. The lower isolation mesh plate 916 is formed in a net-like disk shape having the same diameter as the outer diameter of the outer isolation mesh cylinder 915 by using the same electrically insulating material as the lower isolation mesh plate 216. The lower isolation mesh plate 916 is provided on the lower end surfaces of the base metal body 912 and the noble metal body 914 (and the lower end surfaces of the inner isolation net cylinder 913 and the outer isolation net cylinder 915) and the inner bottom surface of the discharge part 951 of the water discharge cap 950. The base metal body 912 and the noble metal body 914 and the strainer 225 are isolated by interposing between the strainer 225 and the line contact by the upper and lower support lines 916b or the point contact by the support points.

On the other hand, the upper isolation mesh plate 911 is formed in a mesh-like disc shape by the same electrical insulating material as the upper isolation mesh plate 211, but has a diameter larger than the outer diameter of the outer isolation mesh tube 915. The upper isolation mesh plate 911 includes stepped surfaces inside the upper end surfaces of the base metal body 912 and the noble metal body 914 (and upper end surfaces of the inner isolation mesh cylinder 913 and the outer isolation mesh cylinder 915) and the water discharge port of the switching cock 900 ( Between the base metal body 912 and the noble metal body 914 and the internal surface of the switching cock 900 by line contact with the support lines 911b on the upper and lower surfaces or point contact with the support points. Isolated. Note that the upper isolation mesh plate 911 has substantially the same diameter as the stepped surface inside the water discharge port of the switching cock 900, and is arranged to be fitted to the stepped surface portion inside the water discharge port. The overall axial length of the sterilizing unit 910 (the height of the base metal body 912, the inner isolation net cylinder 913, the noble metal body 914 and the outer isolation net cylinder 915, the thickness of the upper isolation net plate 911, and the thickness of the lower isolation net plate 916) Is a length obtained by subtracting the total thickness of the plurality of strainers 225 from the axial length of the water discharge cap 950, and the lower half of the sterilization unit 910 is in a fitted state such as a close fit in the discharge portion 951. While being housed, the upper half projects upward from the discharge part 951 and is arranged at the center of the cap part 952. At this time, the upper surface of the upper isolation screen 911 of the sterilization unit 910 abuts on the stepped surface inside the water outlet of the switching cock 900, so that the sterilization unit 910 is connected to the stepped surface inside the water outlet of the switching cock 900. It is arranged between the bottom wall lower end of the discharge part 951 of the water discharge cap 950 (a flange-like part projecting inward which becomes the peripheral part of the discharge port 951a).

[Assembly method and effects]
In the switching cock adapter according to the tenth embodiment, the sterilization unit 910 in an assembled state is accommodated on the strainer 225 inside the water discharge cap 950, or the lower isolation screen 916 and the like of the sterilization unit 910 are sequentially disposed in the water discharge cap 950. The upper portion of the water discharge cap 950 is attached to the upper portion of the water discharge cap 950 (and the water discharge port of the changeover cock 900). The lower half is accommodated in the discharge part 951 of the water discharge cap 950. In this state, when the switching cock 900 is attached to a water supply device such as a faucet and water is passed through, the water that has passed through the internal water passage of the switching cock 900 is inside the discharge port of the switching cock 900 and inside the water discharge cap 950. It flows into the sterilization unit 910. Then, after the raw water W enters the sterilization unit 910, the entire space in the gap space between the base metal body 912 and the noble metal body 914 from the small hole 911a of the upper isolation screen 911 is the same as in the third embodiment. And discharged from the discharge port 951a of the water discharge cap 950. At this time, since the concave groove 912a of the base metal body 912 promotes water flow, it is possible to ensure a water discharge amount similar to a normal water discharge amount. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 912 into the water flow, and a sufficient bactericidal effect is exhibited despite continuous water discharge (transient water). In addition, the water W from which the metal ions are eluted also has an effect of supplementing the drinker with a mineral when used for drinking.

Embodiment 11
As shown in the figure, the water sterilization apparatus according to the eleventh embodiment is embodied in a switching cock adapter as in the tenth embodiment, but as shown in FIG. 38, the switching cock according to the tenth embodiment. The shape of the base metal body 1012 and the noble metal body 1014 of the sterilization unit 1010 differs from the adapter for use. That is, in the tenth embodiment, the base metal body 1012 as the first reactant has the same configuration as the base metal body 12 and the noble metal body 114 in FIG. 13 and has a simple cylindrical shape corresponding to the inner diameter of the inner isolation net cylinder 913. Is formed. Further, the noble metal body 1014 as the second reactant has the same configuration as the noble metal body 114 in FIG. 13, and has a cross-sectional chrysanthemum shape corresponding to the outer diameter of the inner isolation net cylinder 913 and the inner diameter of the outer isolation net cylinder 915. It is formed in a star-shaped cylinder, and the same groove as the noble metal body 114 is formed on the outer peripheral surface and the inner peripheral surface thereof. Other configurations are the same as those of the switching cock adapter of the tenth embodiment. As shown in FIG. 39, the adapter for the switching cock according to the eleventh embodiment is assembled in the same manner as in the tenth embodiment, and is housed and disposed inside the switching cock 900 and the water discharge cap 950. Then, when water flows through the switching cock 900 (when discharged from the discharge port), the water flows into the sterilization unit 910 and passes through the gap space between the base metal body 1012 and the noble metal body 1014. Similarly to the case of No. 10, the water is discharged from the discharge port 951a of the water discharge cap 950 and imparts a sterilization function and a mineral replenishment function to the water flow. At this time, since the concave groove of the noble metal body 1014 promotes water flow, a water discharge amount similar to a normal water discharge amount can be ensured.

Embodiment 12
As shown in FIG. 40, the water sterilizer according to the twelfth embodiment is embodied in a stationary (stationary) water purifier 1100 connected to a domestic tap faucet or the like. The water purifier 1100 has a main body 1101 equipped with a water purification cartridge (not shown), the raw water supplied from the water supply pipe 1103 into the water supply port 1102 is purified by the water purification cartridge of the main body 1101, and the water purification outlet 1104 to the water purification hose 1105. In the water passage 1120 near the downstream side of the water supply port 1102 (in the water passage between the water supply port 1102 and the water purification cartridge in the main body 1101) and the inside of the water purification outlet 1104 Each of the water passages 1120 is characterized in that a sterilization unit 1110 is coaxially installed.

[Sterilization unit]
As the sterilization unit 1110, a sterilization unit 210 according to the second embodiment having a larger axial length can be used. That is, the base metal body 1112 as the first reactant of the sterilization unit 1110 is a chrysanthemum column made of the same material as the base metal body 212, and has the same concave groove (not shown) on the outer peripheral surface. . The noble metal body 1114 as the second reactant has a cylindrical shape made of the same material as the noble metal body 214. Further, the inner isolation net cylinder 1113 has the same height as the base metal body 1112 and the noble metal body 1114 by the same electrical insulating material as the inner isolation net cylinder 213, and has a large number of small holes 1113a formed through the entire surface. It is formed in a net-like cylindrical shape. The inner isolation net tube 1113 is interposed between the base metal body 1112 and the noble metal body 1114, and the base metal body 1112 and the noble metal body are formed by line contact or point contact with the support points 1113b on the inner and outer peripheral surfaces. 1114 is isolated, and the entire outer peripheral surface of the base metal body 1112 and the entire inner peripheral surface of the noble metal body 1114 are opposed to each other through a gap space formed by the inner isolation net tube 1113. Further, the outer isolation mesh cylinder 1115 has the same height as the noble metal body 1114 using the same electrical insulating material as the outer isolation mesh cylinder 215, and has a net-like cylindrical shape in which a large number of small holes 1115a are formed through the entire surface. Formed. The outer isolation net tube 1115 is interposed between the noble metal body 1114 and the inner peripheral surface of the water passage 1120 of the water purifier 1100, and is line contact by the support line 1115b on the inner peripheral surface and the outer peripheral surface or point contact by the support point. Thus, the noble metal body 1114 and the water passage 112 are isolated. The lower isolation mesh plate 1116 is formed in the shape of a net-like disc having the same diameter as the outer diameter of the outer isolation mesh tube 1115 using the same electrically insulating material as the lower isolation mesh plate 216. The lower isolation net plate 1116 is a lower end surface of each of the base metal body 1112 and the noble metal body 1114 (and a lower end surface of the inner isolation net cylinder 1113 and the outer isolation net cylinder 1115) and an upstream surface of the water passage 1120 of the water purifier 1110. The base metal body 1112 and the noble metal body 1114 are separated from the upstream surface of the water passage 1120 by line contact with the upper and lower support lines 1116b or point contact with the support points. Note that the upper isolation mesh plate 1111 is formed in a net-like disc shape having the same diameter as the outer diameter of the outer isolation mesh tube 1115 using the same electrical insulating material as the upper isolation mesh plate 211. The upper isolation screen 1111 includes upper end surfaces of the base metal body 1112 and the noble metal body 1114 (and upper end surfaces of the inner isolation network cylinder 1113 and the outer isolation network cylinder 1115) and a downstream portion of the water passage 1120 of the water purifier 1110. The base metal body 1112 and the noble metal body 1114 are separated from the upstream surface of the water passage 1120 by the line contact by the upper and lower support lines 1116b or the point contact by the support points. In addition, as shown in the drawing, in the water passage 1120 of the water purifier 1110, there is usually no member or part that comes in contact with the sterilization unit 1110 on the upstream side of the sterilization unit 1110. When the member or part is present, the isolation effect is exhibited.

[Assembly method and effects]
In the eleventh embodiment, the discharge port 1102 of the water purifier 1100 is removed, and one sterilization unit 1110 in an assembled state is inserted and disposed in the water passage 1120 on the discharge port 1102 side, and the discharge port 1102 is connected to the water purifier 1110. Install. Moreover, the water purifying outlet 1104 of the water purifier 1100 is removed, the other sterilization unit 1110 in the assembled state is inserted into the water passage 1120 in the water purifying outlet 1104, and the water purifying outlet 1104 is attached to the water purifier 1100. . At this time, the sterilization unit 1110 is inserted into the water passage 1120 on the discharge port 1102 side of the water purifier 1100 because the upper isolation screen 1111 and the lower isolation screen 1116 have the same configuration and are symmetrical in the axial direction and the radial direction. When doing so, either the upper isolation screen 1111 or the lower isolation screen 1116 may be inserted as the back side (downstream side). Similarly, when the sterilization unit 1110 is inserted into the water passage 1120 of the water purification outlet 1104 of the water purifier 1100, either the upper isolation screen 1111 or the lower isolation screen 1116 is inserted as the back side (upstream side). May be. In addition, the inner peripheral surface of the water passage 1120 on the discharge port 1102 side is provided with a stepped surface, a protrusion, or the like on which the tip of the inserted sterilization unit 1110 is abutted and locked, and the sterilization unit 1110 inserted into the water passage 1120 is positioned. Then, it may be held at a fixed position. In this state, when raw water is supplied from the water supply pipe 1103 to the water supply port 1102 and passed through the water passage 1120 of the water purifier 1100, the raw water passing through the water passage 1120 flows into the sterilization unit 1110 in the water passage 1120. To do. Then, after the raw water enters the sterilization unit 1110, the small holes 1111a of the front isolation screen (one of the upper isolation screen 1111 and the lower isolation screen 1116) are provided in the same manner as in the third embodiment. , 1116a flows into the entire gap space between the base metal body 1112 and the noble metal body 1114 and flows in the gap space in the axial direction. It flows out from the small holes 1111a and 1116a on the other side of 1116. At this time, since the concave groove of the base metal body 1112 promotes water flow, it is possible to ensure a water discharge amount similar to a normal water discharge amount. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 1112 into the water flow, and sufficient sterilizing function and mineral supplement to the raw water despite continuous water discharge (transient water). Add functionality.

The raw water containing metal ions flowing out from the sterilization unit 1110 on the discharge port 1102 side flows from the water passage 1120 into the water purification cartridge in the main body 1101 to be purified, and then the water passage 1120 on the boss outlet 1104 side. Flows in. Then, raw water passing through the water passage 1120 flows into the sterilization unit 1110 in the water passage 1120. After the raw water enters the sterilization unit 1110, the base metal body is passed through the small holes 1111a and 1116a of the lower side separation screen (one of the upper side separation screen 1111 and the lower side separation screen 1116) in the same manner as described above. 1112 and the noble metal body 1114 flows into the entire gap space and flows in the gap direction in the axial direction, and the upper end side separation screen (the other of the upper side separation screen 1111 and the lower side separation screen 1116) It flows out of the small holes 1111a and 1116a. At this time, since the concave groove of the base metal body 1112 promotes water flow, a water discharge amount similar to a normal water discharge amount can be ensured. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 1112 into the water flow, and sufficient sterilizing function and mineral supplement to the raw water despite continuous water discharge (transient water). Add functionality. Thus, when the sterilization unit 1110 is provided on both the discharge port 1102 side and the purified water outlet portion 1104 side of the water purifier 1110, both the downstream side (raw water side) and the upstream side (purified water side) of the purified water cartridge in the main body 1101. Thus, metal ions can be eluted by the sterilization unit 1110 to provide a sufficient sterilization function and mineral replenishment function. In particular, the purified water purified by the water purification cartridge is free from chlorine, which is a sterilizing component in the raw water. Since metal ions as a sterilizing component are eluted by the unit 1110, it is possible to effectively prevent bacteria from breeding. That is, according to the present embodiment, metal ions are eluted in the raw water flowing into the water purifier 1100 to sterilize bacteria in the raw water with the metal ions, and the metal ions are also discharged into the purified water flowing out of the water purifier 1100. Sterilize the bacteria remaining in the purified water (even if bacteria remain in the purified water without being sterilized on the raw water side) and sterilize the purified water The function can be imparted and subsequent bacterial growth can be effectively prevented.

By the way, in Embodiment 11, although the sterilization unit 1110 was provided in both the raw water side (discharge port 1102 side) and the water purification side (purified water outlet part 1104 side) of the water purifier 1100, the sterilization unit is provided only in one of them. Even if 1110 is provided, a sufficient sterilizing effect and mineral replenishing effect can be exhibited.

Embodiment 13
As shown in FIG. 41, the water sterilizer according to Embodiment 13 is embodied in a spray head (spray gun) 1200. The spray head 1200 includes a handle portion 1201 having a shape that can be gripped by a hand, an injection portion 1202 that intersects and extends from the upper end of the handle portion 1201, a water supply portion 1203 provided at the base end of the handle portion 1201, and an injection portion 1202. An ejection port 1204 provided at the front end and a lever 1205 that can be operated by fingers placed on the front surface of the handle 1201 are provided. On the other hand, the spray head 1200 is characterized in that a sterilization unit 1210 is coaxially housed in a water passage 1202 a facing the injection port 1204 in the injection unit 1202.

[Sterilization unit]
As the sterilization unit 1210, the same one as the sterilization unit 1110 of the twelfth embodiment can be used. In other words, the sterilization unit 1210 has the same structure as the upper isolation screen 1111, the base metal body 1112, the inner isolation screen cylinder 1113, the noble metal body 1114, the outer isolation screen 1115, and the lower isolation screen 1116 of the sterilization unit 1110. It consists of an isolation net plate 12111, a base metal body 1212, an inner isolation net cylinder 1213, a noble metal body 1214, an outer isolation net plate 1215 and a lower isolation net plate 1216. The upper isolation screen 1211, the inner isolation screen 1213, the outer isolation screen 1215, and the lower isolation screen 1216 have small holes 1211a, 1215a, and 1216a, respectively, and support lines on both sides. Opposing members (base metal body 1212, noble metal body 1214, etc.) are supported by line contact or point contact with 1211b, 1213b, 1215b, 1216b or support points. On the other hand, the base metal body 1212 as the first reactant is a chrysanthemum column having a groove similar to the groove 212a of the base metal portion 212, and the noble metal body 1214 as the second reactant is a corresponding cylindrical shape. is there. The outer diameter of the sterilization unit 1210 (outer diameter of the outer isolation net cylinder 1215) is substantially the same as the inner diameter of the water passage 1202a of the injection unit 1202, and the axial length is a protrusion from the step surface 1202b of the water passage 1202a of the injection unit 1202. The same axial length as the distance to 1202c is used.

[Assembly method and effects]
In the spray head adapter according to the thirteenth embodiment, the injection port 1204 is removed from the injection unit 1202 of the spray head 1200, and the sterilization unit 1210 in an assembled state is inserted from the injection port 1204 into the internal water passage 1202a. The mouth 1204 is attached to the injection unit 1202. At this time, as in the case of the twelfth embodiment, the sterilization unit 1210 may insert either the upper isolation screen 1211 or the lower isolation screen 1216 as the back side (downstream side). At this time, a step surface 1202b that abuts and locks the distal end surface of the sterilization unit 1210 is formed on the back side of the circumferential surface of the water passage 1202a of the injection unit 1202, and in front of the circumferential surface of the water passage 1202a. On the side, a protrusion 1202c that contacts and locks the base end surface of the sterilization unit 1210 is formed. When the sterilization unit 1210 is inserted into the water passage 1202a of the injection unit 1202, the sterilization unit 1210 elastically deforms the protrusion 1202c and gets over, and the sterilization unit 1210 is sterilized when the tip of the sterilization unit 1210 contacts the step surface 1202b. The base end of the unit 1210 completely gets over the protrusion 1202c, and the protrusion 1202c is elastically restored to lock and support the base end of the sterilization unit 1210. Thereby, the sterilization unit 1210 is positioned and fixedly arranged at a predetermined position (between the step surface 1202b and the protrusion 1202c) in the water passage 1202a of the injection unit 1202.

In this state, when supplying raw water from a water supply hose (not shown) attached to the water supply unit 1203 to the water supply unit 1203 and operating the lever 1205 of the spray head 1200 to pass through the water passage 1202a, the water passage The raw water passing through 1202a flows into the sterilization unit 1210 in the water passage 1202a. After the raw water enters the sterilization unit 1210, the small holes 1211a of the front side separation screen (one of the upper side separation screen 1211 and the lower side separation screen 1216) are formed in the same manner as in the third embodiment. , 1216a flows into the entire gap space between the base metal body 1212 and the noble metal body 1214 and flows in the gap space in the axial direction, and the rear side separation screen (the upper side separation screen 1211 and the lower side separation screen) It flows out from the small holes 1211a and 1216a on the other side of 1216. At this time, since the concave groove of the base metal body 1212 promotes water flow, a water discharge amount similar to a normal water discharge amount can be ensured. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 1212 into the water flow, and sufficient sterilizing function and mineral supplement to the raw water despite continuous water discharge (transient water). Add functionality. Then, the raw water containing metal ions that has flowed out of the sterilization unit 1210 is jetted from the jet outlet 1204 toward the jetting target (such as plants to be sprinkled) through the water passage 1202a. Therefore, according to the present embodiment, the raw water sprayed from the spray head 1200 can be made into functional water with a metal ion-containing sterilization function / mineral replenishment function. It is possible to effectively perform sterilization in the soil or supplementation with magnesium as an essential nutrient of plants. In addition, it has been confirmed that water containing metal ions (Zn ions and Mg ions) has an insect repellent effect and a pest repellent effect, and when sprayed with the spray head 1200 of this embodiment, the insect repellent effect on the plant And pest repellent effects can be imparted to promote its growth.

Embodiment 14
As shown in FIGS. 42 (a) and 42 (b), the water sterilizer according to Embodiment 14 is embodied in a shower head 1300 or a shower head 1400. As shown in FIG. 42A, a shower head 1300 as a first example of the fourteenth embodiment includes a handle portion 1301 having a shape that can be gripped by hand, and a water supply portion 1302 provided at the base end of the handle portion 1301. And an injection part 1303 that intersects and extends from the tip of the handle part 1301 and an injection port 1304 provided at the tip of the injection part 1303. On the other hand, the shower head 1300 is characterized in that a sterilization unit 1310 is coaxially installed in a water passage 1301a in the handle 1301.

[Sterilization unit]
As the sterilizing unit 1310, the same one as the sterilizing unit 1110 of Embodiment 12 can be used. That is, the sterilization unit 1310 has an upper side having the same configuration as the upper isolation net 1111, the base metal body 1112, the inner isolation net cylinder 1113, the noble metal body 1114, the outer isolation net 1115, and the lower isolation net 1116 of the sterilization unit 1110. It consists of an isolation net plate 1311, a base metal body 1312, an inner isolation net cylinder 1313, a noble metal body 1314, an outer isolation net plate 1315 and a lower isolation net plate 1316. The upper isolation screen 1311, the inner isolation screen 1313, the outer isolation screen 1315, and the lower isolation screen 1316 each have small holes 1311a, 1315a, and 1316a formed on the entire surface, and support lines on both sides. Opposing members (base metal body 1312, noble metal body 1314, etc.) are supported by line contact or point contact with 1311b, 1313b, 1315b, 1316b or a support point. On the other hand, the base metal body 1312 as the first reactant is a chrysanthemum column having a groove similar to the groove 212a of the base metal portion 212, and the noble metal body 1314 as the second reactant is a corresponding cylindrical shape. is there.

[Assembly method and effects]
In the shower head 1300 of the first example of the fourteenth embodiment, the water supply unit 1302 is removed from the handle 1301, and the disinfected sterilization unit 1310 is inserted from the water supply unit 1302 into the internal water passage 1301a. The part 1302 is attached to the handle part 1301. At this time, as in the case of the twelfth embodiment, the sterilization unit 1310 may insert either the upper isolation screen 1311 or the lower isolation screen 1316 as the back side (downstream side). At this time, a step surface that abuts and locks the distal end surface of the sterilization unit 1310 may be provided and positioned on the inner side of the peripheral surface of the water passage 1301a of the handle 1301. In this state, when raw water is supplied to the water supply unit 1302 from a water supply hose (not shown) attached to the water supply unit 1302 and is passed through the water passage 1301a, the raw water passing through the water passage 1301a is within the water passage 1301a. Into the sterilization unit 1310. After the raw water enters the sterilization unit 1310, the small holes 1311a of the front side separation screen (one of the upper side separation screen 1311 and the lower side separation screen 1316) are provided in the same manner as in the third embodiment. , 1316a flows into the entire gap space between the base metal body 1312 and the noble metal body 1314 and flows in the gap space in the axial direction, and the rear side separation screen plate (the upper side separation screen plate 1311 and the lower side separation screen plate) It flows out from the other small holes 1311a and 1316a of 1316. At this time, since the concave groove of the base metal body 1312 promotes water flow, a water discharge amount similar to a normal water discharge amount can be ensured. Also, at this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 1312 into the water flow, and sufficient sterilizing function and mineral supplement to the raw water despite continuous water discharge (temporary water) Add functionality. And the raw | natural water containing a metal ion which flowed out from the sterilization unit 1310 is injected from the injection port 1304 through the water flow path 1301a.

On the other hand, as shown in FIG. 42B, a shower head 1400 as a second example of the fourteenth embodiment has a handle 1401 having a shape that can be gripped by hand, and water supply provided at the base end of the handle 1401. A portion 1402, an injection portion 1403 that intersects from the tip of the handle portion 1401, and an injection port 1404 provided at the tip of the injection portion 1403. On the other hand, the shower head 1400 is characterized in that a sterilization unit 1410 is coaxially installed on a water passage in the injection unit 1403.

[Sterilization unit]
As the sterilization unit 1410, the same one as the sterilization unit 1110 of Embodiment 12 can be used. In other words, the sterilization unit 1410 has the same structure as the upper isolation screen 1111, the base metal body 1112, the inner isolation screen cylinder 1113, the noble metal body 1114, the outer isolation screen 1115, and the lower isolation screen 1116 of the sterilization unit 1110. It consists of an isolation net plate 1411, a base metal body 1412, an inner isolation net cylinder 1413, a noble metal body 1414, an outer isolation net plate 1415 and a lower isolation net plate 1416. The upper isolation screen 1411, the inner isolation screen 1413, the outer isolation screen 1415, and the lower isolation screen 1416 are each formed with a small hole on the entire surface. Opposing members (base metal body 1412, noble metal body 1414, etc.) are supported by line contact or point contact. On the other hand, the base metal body 1412 as the first reactant is a chrysanthemum column having a groove similar to the groove 212a of the base metal portion 212, and the noble metal body 1414 as the second reactant is a corresponding cylindrical shape. is there.

[Assembly method and effects]
The shower head 1400 of the second example of the fourteenth embodiment removes the injection unit 1403 from the handle 1401 and arranges and disposes the assembled sterilization unit 1410 on the water flow path inside the injection unit 1403. The part 1403 is attached to the handle part 1401. At this time, as in the case of the twelfth embodiment, the sterilization unit 1410 may insert either the upper isolation screen 1411 or the lower isolation screen 1416 as the back side (downstream side). At this time, the front outer peripheral edge and the base end outer peripheral surface of the sterilization unit 1410 are fitted and locked to the inner surface of the bottom wall of the injection unit 1403 (the bottom wall provided with the injection port 1404) and the inner surface of the peripheral wall. The part 1403a and the fitting part 1403b are provided to position the sterilization unit 1410. In this state, when raw water is supplied from a water supply hose (not shown) attached to the water supply unit 1402 to the water supply unit 1402 and passed through the injection unit 1403, the raw water passing through the injection unit 1403 is converted into an internal sterilization unit. Flows into 1410. Then, the raw water enters the sterilization unit 1410, and then, from the small hole of the front side separation screen (one of the upper side separation screen 1411 and the lower side separation screen 1416), in the same manner as in the third embodiment. It flows into the entire gap space between the base metal body 1412 and the noble metal body 1414 and flows in the gap space in the axial direction, and the rear side separation screen (the other of the upper side separation screen 1411 and the lower side separation screen 1416) ) At this time, since the concave groove of the base metal body 1412 promotes water flow, it is possible to ensure a water discharge amount similar to a normal water discharge amount. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 1412 into the water flow, and sufficient sterilizing function and mineral supplement to the raw water despite continuous water discharge (transient water). Add functionality.

Embodiment 15
As shown in FIG. 43, the water sterilizer according to Embodiment 15 is embodied as a drawer shower faucet. A drawer shower faucet 1500 according to the fifteenth embodiment includes a vertical column-shaped water supply unit 1501 having a water passage for supplying raw water therein, and a faucet opening / closing lever 1502 that is operably provided at the upper end of the water supply unit 1501. , A water discharge pipe 1503 connected to the water supply part 1501 so as to communicate with a water passage inside the water supply part 1501, and a shower head 1504 attached to the tip of the water discharge pipe 1503 so as to be freely drawable. The shower head 1504 is detachably attachable to the water discharge cap 1505. The drawer shower faucet 1500 is characterized in that a sterilization unit 1510 is coaxially mounted on a water passage in the water discharge cap 1505 of the shower head 1504.

[Sterilization unit]
As the sterilization unit 1510, the same one as the sterilization unit 1110 of the twelfth embodiment (or the second example of the fourteenth embodiment shown in FIG. 42B) can be used. That is, the sterilization unit 1510 has the same structure as the upper isolation net 1111, the base metal body 1112, the inner isolation net cylinder 1113, the noble metal body 1114, the outer isolation net 1115, and the lower isolation net 1116 of the sterilization unit 1110. It consists of an isolation net plate 1511, a base metal body 1512, an inner isolation net cylinder 1513, a noble metal body 1514, an outer isolation net plate 1515 and a lower isolation net plate 1516. The upper isolation screen 1511, the inner isolation screen cylinder 1513, the outer isolation screen 1515, and the lower isolation screen 1516 each have small holes 1511a, 1513a, 1515a, 1516a formed on the entire surface. Opposing members (base metal body 1512, noble metal body 1514, etc.) are supported by line contact or point contact with support lines 1511b, 1513b, 1515b, 1516b or support points. On the other hand, the base metal body 1512 as the first reactant is a chrysanthemum column having a groove similar to the groove 212a of the base metal portion 212, and the noble metal body 1514 as the second reactant is a corresponding cylindrical shape. is there.

[Assembly method and effects]
The drawer shower faucet 1500 according to the fifteenth embodiment removes the water discharge cap 1505 from the shower head 1504, arranges the disinfected sterilization unit 1510 on the water flow path inside the water discharge cap 1505, and places the water discharge cap 1505. Attach to shower head 1504. At this time, as in the case of the twelfth embodiment, the sterilization unit 1510 may insert either the upper isolation screen 1511 or the lower isolation screen 1516 as the back side (downstream side). At this time, the inner peripheral surface of the bottom wall of the injection unit 1503 (the bottom wall on which the injection port 1506 is provided) and the inner surface of the peripheral wall are fitted and locked to the outer peripheral surface of the distal end and the outer peripheral surface of the base end. The part 1506a and the fitting part 1506b are provided to position the sterilization unit 1510. In this state, when raw water is supplied to the water supply unit 1501 and passed through the shower pipe 1503 into the shower head 1504, the raw water passing through the shower head 1504 flows into the sterilization unit 1510 inside the water discharge cap 1505. Then, after the raw water enters the sterilization unit 1510, the small holes 1511a in the front side isolation screen (one of the upper side isolation screen 1511 and the lower side isolation screen 1516) are provided in the same manner as in the third embodiment. , 1516a flows into the entire gap space between the base metal body 1512 and the noble metal body 1514 and flows in the gap space in the axial direction, and the rear side separation screen (the upper side separation screen 1511 and the lower side separation screen) It flows out from the small holes 1511a and 1516a on the other side of 1516. At this time, since the concave groove of the base metal body 1512 promotes water flow, a water discharge amount similar to a normal water discharge amount can be ensured. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 1512 into the water flow, and sufficient sterilizing function and replenishment of mineral content to the raw water despite continuous water discharge (transient water). Add functionality.

Embodiment 16
As shown in FIG. 44, the water sterilizer according to the sixteenth embodiment is embodied in a wash water faucet adapter that is attached to the wash water faucet 1600 and used. The flush faucet 1600 is detachable with a water discharge pipe 1601 extending obliquely upward from the horizontal direction, a water supply portion 1602 extending vertically from the base end of the water discharge pipe 1601, and an opening at the tip of the water discharge pipe 1601. A cap 1603 that closes and a water discharge portion 1604 that extends orthogonally from the lower surface side of the front end portion of the water discharge pipe 1601, and communicates in the axial direction inside the water supply portion 1602, the water discharge pipe 1601, and the water discharge portion 1604. A waterway is formed. In addition, a circular water passage hole 1601a is formed through the water discharge pipe 1601 at the axial center position on the upper surface side. A wash water faucet adapter housing 1620 of the present embodiment is integrally fixed to the water passage hole 1601a of the wash water faucet 1600. In the center of the bottom wall of the housing 1620, a circular hole that matches the water passage hole 1601a of the water discharge pipe 1601 is formed so as to communicate with the water passage of the water discharge pipe 1601. The faucet adapter accommodates a flow rate adjustment plate 1621 having the same configuration as that of the flow rate adjustment plate 24 of Embodiment 1 in a housing 1620 and is arranged on the bottom surface. Further, a sterilization unit 1610 is provided in the housing 1620. After mounting on the flow rate adjusting plate 1621, the circular opening at the upper end of the housing 1620 is detachably closed by a cap 1630. Like the flow rate adjusting plate 24, the flow rate adjusting plate 1621 has an outer diameter substantially the same as the inner diameter of the housing 1620, and penetrates a circular flow rate adjusting hole having a diameter equal to or smaller than the diameter of the circular hole on the bottom surface of the housing 1620 in the center. By forming and adjusting the hole diameter of the flow rate adjusting hole, the amount of water flowing into the housing 1620 from the water flow hole 1601a of the water discharge pipe 1601 and the flow back through the housing 1620 to the water flow path of the water discharge pipe 1601 are discharged. The amount of water to be increased or decreased is adjusted.

[Sterilization unit]
The sterilization unit 1610 housed in the housing 1620 is the same as the sterilization unit 10 of the first or second embodiment shown in FIGS. 1 to 7, or another example of the first embodiment shown in FIG. 12 or FIG. The thing similar to the sterilization unit 110 can be used. That is, the sterilization unit 1610 has, for example, the same configuration as the upper isolation net plate 11, the base metal body 12, the inner isolation net cylinder 13, the noble metal body 14, the outer isolation net plate 15, and the lower isolation net plate 16 of the sterilization unit 10. The upper isolation screen 1611, the base metal body 1612, the inner isolation screen cylinder 1613, the noble metal body 1614, the outer isolation screen 1615, and the lower isolation screen 1616. The upper isolation screen 1611, the inner isolation screen cylinder 1613, the outer isolation screen 1616, and the lower isolation screen 1616 are respectively formed with small holes 1611a, 1613a, 1615a, 1616a on both sides, The supporting members 1611b, 1613b, 1615b, 1616b or supporting points support the opposing members (base metal body 1612, noble metal body 1614, etc.) in line contact or point contact. On the other hand, the base metal body 1612 as the first reactant can be a simple cylindrical shape similar to the base metal portion 12 or a chrysanthemum column shape having a concave groove similar to the base metal portion 112. Further, the noble metal body 1514 as the second reactant can be a simple cylindrical shape similar to the noble metal portion 14 or a chrysanthemum cylinder similar to the noble metal portion 114.

[Assembly method and effects]
In the wash faucet adapter of the sixteenth embodiment, the cap 1630 is removed from the housing 1620 fixed to the wash faucet 1600, and the flow rate adjusting plate 1621 is accommodated in the housing 1620 and placed on the bottom surface. At this time, the flow rate adjustment hole at the center of the flow rate adjustment plate 1621 overlaps the circular hole on the bottom surface of the housing 1620 and the water flow hole 1601 a of the water discharge pipe 1601. Next, the assembled sterilization unit 1610 is coaxially accommodated in the housing 1620 and placed on the flow rate adjusting plate 1621, and a cap 1630 is attached to the upper end of the housing 1620 and closed. At this time, as in the case of the twelfth embodiment, the sterilization unit 1610 may insert either the upper isolation screen 1611 or the lower isolation screen 1616 as the back side (lower side). In this state, when the raw water W is supplied to the water supply section 1602 and passed through the water passage of the water discharge pipe 1601, the raw water W passing through the water passage of the water discharge pipe 1601 is the same as in the first embodiment. However, it flows into the sterilization unit 1610 inside the housing 1620 from the water flow hole 1601a of the water discharge pipe 1601. At this time, the amount of water flowing into the housing 1620 is adjusted by the flow rate adjusting plate 1621. Then, after entering the sterilization unit 1610, the raw water W flows into the entire gap space between the base metal body 1512 and the noble metal body 1514 and flows through the gap space. The flow rate is adjusted by the flow rate adjusting plate 1621 and returned to the water passage of the water discharge pipe 1601. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 1612 into the water flow W, and a sufficient sterilizing function and mineral supplement to the raw water W despite continuous water discharge (transient water). Add functionality.

Embodiment 17
As shown in FIG. 45, the water sterilizer according to the seventeenth embodiment has a branch attached to a branch header (multiheader pipe joint) 1700 that branches and supplies raw water (tap water) of water pipes to various water supply devices. It is embodied in a header adapter. The branch header 1700 includes a cylindrical pipe part 1701 that can be connected to a water supply pipe (main pipe side), and a plurality of joint parts 1702 branched from the pipe part 1701 at substantially right angles (substantially T-shaped). A branch header adapter is connected to the portion 1702. A female screw is formed on the inner peripheral surface of 1702. On the other hand, the branch header adapter is sterilized unit 1710, housing 1720 that houses sterilizing unit 1710, and screwed into the lower end of housing 1720, and is detachably attached to watertightly close the circular opening at the lower end of housing 1720. And a cap-shaped or joint-shaped insertion portion 1730. The housing 1720 is made of a metal such as a copper alloy so as to have the same configuration as the housing 20 of the first embodiment. That is, in the housing 1720, a small-diameter cylindrical male screw portion 1722 is integrally formed at the center of the upper end of the cylindrical base portion 1721, and a circular upper end opening is formed at the upper end of the male screw portion 1722. Since the inside of the male screw portion 1722 is in communication with the internal space of the base portion 1721, the male screw on the outer peripheral surface of the male screw portion 1721 is screwed into the female screw of the joint portion 1702 of the branch header 1700, whereby the housing 1720 is It attaches to each joint part 1702 of the branch header 1700, and connects the water flow path in the piping part 1701 and the internal space of the housing 1720. The insertion portion 1730 is configured to detachably attach the male screw on the inner peripheral surface to the male screw on the outer peripheral surface of the lower end portion of the base portion 1721 and attach it detachably to the circular opening on the lower end of the base portion 1721. It has a two-stage cylindrical configuration in which the drainage portion 31 is removed from the drain cap 30. That is, the insertion portion 1730 is formed by hanging a small-diameter cylindrical portion in the center of the bottom surface of the large-diameter bottomed cylindrical portion, and installing water supply pipes to various water supply devices on the small-diameter cylindrical portion by one-touch fitting or the like. It is designed to be connected so that when the pipe is mounted, it communicates with a water passage in the pipe connecting the internal space of the housing 1720 through a circular hole formed through the center of the large-diameter bottomed cylindrical portion. It has become. The insertion portion 1730 is formed with a female screw 173a on the inner surface of a small-diameter cylindrical portion, and a male screw at one end of a pipe leading to various water supply devices (for a toilet, etc.) is screwed into the female screw 1730a. It can be installed freely. On the other hand, the branch header adapter accommodates the flow rate adjusting plate 1724 having the same configuration as that of the flow rate adjusting plate 24 of the first embodiment in the housing 1720 and is arranged on one end surface (end surface on the male screw portion 1722 side). Furthermore, after the sterilization unit 1710 is housed in the housing 1720 and placed on the flow rate adjustment plate 1724, the circular opening at the tip of the base portion 1721 of the housing 1720 is detachably closed by the insertion portion 1730. . Similar to the flow rate adjusting plate 24, the flow rate adjusting plate 1724 has an outer diameter that is substantially the same as the inner diameter of the base portion 1721 of the housing 1720, and a circular flow rate adjustment that has a diameter that is equal to or smaller than the diameter of the circular hole on the inner end surface of the housing 1720 The amount of water flowing into the housing 1720 from the water passage hole 1702a of the joint portion 1702 communicating with the water passage of the pipe portion 1701 by adjusting the hole diameter of the flow rate adjustment hole by forming a hole in the center, and the housing 1720 The amount of water flowing back to the water flow path of the piping portion 1701 is adjusted to increase or decrease.

[Sterilization unit]
As the sterilizing unit 1710, the same one as the sterilizing unit 1110 of Embodiment 12 can be used. That is, the sterilization unit 1710 has an upper side having the same configuration as the upper isolation net 1111, the base metal body 1112, the inner isolation net cylinder 1113, the noble metal body 1114, the outer isolation net 1115, and the lower isolation net 1116 of the sterilization unit 1110. It consists of an isolation net plate 1711, a base metal body 1712, an inner isolation net cylinder 1713, a noble metal body 1714, an outer isolation net plate 1715 and a lower isolation net plate 1716. Further, the upper isolation screen 1711, the inner isolation screen cylinder 1713, the outer isolation screen 1717, and the lower isolation screen 1716 each have a small hole formed on the entire surface. Opposing members (base metal body 1712, noble metal body 1714, etc.) are supported by line contact or point contact. On the other hand, the base metal body 1712 as the first reactant is a chrysanthemum column having a groove similar to the groove 212a of the base metal portion 212, and the noble metal body 1714 as the second reactant is a corresponding cylindrical shape. is there. The outer diameter of the sterilization unit 1710 (the outer diameter of the outer isolation net tube 1715) is substantially the same as the inner diameter of the base portion 1721 of the housing 1720, and the axial length is the internal shaft length of the base portion 1721 excluding the thickness of the flow rate adjusting plate 1724. Length.

[Assembly method and effects]
In the branch header adapter according to the seventeenth embodiment, first, the insertion portion 1730 is removed from the housing 1720, the flow rate adjusting plate 1724 is accommodated in the housing 1720, placed on one end surface, and further assembled in the housing 1720. After the sterilization unit 1710 in the state is accommodated coaxially and placed on the flow rate adjustment plate 1724, the cap 1630 is attached to the housing 1720. At this time, as in the case of the twelfth embodiment, the sterilization unit 1710 may insert either the upper isolation screen 1711 or the lower isolation screen 1716 as the back side. In this state, the male screw portion 1722 of the housing 1720 is attached to the joint portion 1702 of the branch header 1700. At this time, the flow rate adjustment hole at the center of the flow rate adjustment plate 1724 in the housing 1720 overlaps with the circular hole on one end surface of the housing 1720 and the water flow hole 1702 a of the branch header 1700. Next, pipes to various water supply devices are inserted and attached to the insertion portion 1730. In this state, when raw water is supplied to the water passage in the pipe portion 1701 of the branch header 1700 and passed through, the raw water passing through the water passage in the pipe portion 1701 is housed in the housing from the water passage hole 1702a of the pipe portion 1701. 1720 flows into the sterilization unit 1710 inside the base 1721. At this time, the amount of water flowing into the housing 1720 is adjusted by the flow rate adjusting plate 1724. After the raw water enters the sterilization unit 1710, the small holes in the base end side isolation screen plate (one of the upper isolation screen plate 1711 and the lower isolation screen plate 1716) are provided in the same manner as in the third embodiment. From the base metal body 1712 and the noble metal body 1714 and flows in the gap space in the axial direction, and the separation screen plates on the tip side (the upper separation screen plate 1711 and the lower isolation screen plate 1716 It flows out from the other small hole. At this time, since the concave groove of the base metal body 1712 promotes water flow, a water discharge amount similar to a normal water discharge amount can be ensured. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 1712 into the water flow, and sufficient sterilizing function and mineral supplement to the raw water despite continuous water discharge (transient water). Add functionality. Then, the raw water containing metal ions flowing out from the sterilization unit 1710 flows into a pipe connected to the insertion portion 1803, is supplied to a water supply device etc. leading to the pipe, and is finally discharged from the water supply device etc. .

Embodiment 18
As shown in FIG. 46, the water sterilizer according to Embodiment 18 is embodied in a sprinkler 1800. The sprinkler 1800 is formed integrally with a cylindrical pipe portion 1801 that can be connected to a water pipe and a substantially right angle (substantially T-shaped) from the center of the lower surface side of the pipe portion 1801 and has a female screw on the inner peripheral surface of the tip portion. A substantially cylindrical storage portion 1802 formed, a substantially cylindrical injection portion 1803 formed on the outer peripheral surface of the base end portion with a male screw to be screwed into a female screw of the storage portion 1803, and a tip of the injection portion 1803. And a scattering portion 1804 having a plurality of disks. Further, a female screw portion 1805 and a male screw portion 1806 for detachably attaching the water supply pipe are integrally formed at both ends of the pipe portion 1801, respectively. Further, in the accommodating portion 1802, a portion on the back side (upstream side) from the female screw on the inner peripheral surface of the tip end portion serves as an accommodating space for accommodating the sterilizing unit 1810. The injection unit 1803 includes a small-diameter cylindrical portion formed on the outer peripheral surface of a male screw screwed into the female screw of the housing portion 1802, and a large-diameter stepped portion (three-stage) extending coaxially with the small-diameter cylindrical portion. ) It consists of a cylindrical part. Further, the scattering portion 1804 is obtained by fixing a plurality of (four in the illustrated example) disks to be parallel to each other at regular intervals on a small-diameter stepped columnar portion extending coaxially from the center of the tip of the injection portion 1803. is there. In the sprinkler 1800, water in the water passage of the pipe portion 1801 flows through the water passage of the accommodating portion 1802 and the injection portion 1803 that are coaxial, and is injected from the tip of the injection portion 1803, and is scattered in all directions by the scattering portion 1804. It has come to be.

[Sterilization unit]
As the sterilization unit 1810 accommodated in the accommodation portion 1802 of the sprinkler 1800, the same sterilization unit 1110 as that in Embodiment 12 can be used. In other words, the sterilization unit 1810 has an upper isolation net plate 1111, a base metal body 1112, an inner isolation net cylinder 1113, a noble metal body 1114, an outer isolation net plate 1115, and a lower isolation net plate 1116 of the sterilization unit 1110. It consists of an isolation net plate 1811, a base metal body 1812, an inner isolation net cylinder 1813, a noble metal body 1814, an outer isolation net plate 1815 and a lower isolation net plate 1816. Also, the upper isolation screen 1811, the inner isolation screen 1813, the outer isolation screen 1815, and the lower isolation screen 1816 each have a small hole formed on the entire surface, and by the support lines or support points on both the front and back surfaces, Opposing members (base metal body 1812, noble metal body 1814, etc.) are supported by line contact or point contact. On the other hand, the base metal body 1812 as the first reactant has a chrysanthemum column shape having a groove similar to the groove 212a of the base metal portion 212, and the noble metal body 1814 as the second reactant has a corresponding cylindrical shape. is there. The outer diameter of the sterilization unit 1810 (outer diameter of the outer isolation net tube 1815) is substantially the same as the inner diameter of the accommodating portion 1802, and the axial length is the length of the female screw portion from the axial length of the inner space of the accommodating portion 1802. Excluded length.

[Assembly method and effects]
In the sprinkler according to the eighteenth embodiment, first, the injection unit 1803 is removed from the storage unit 1802, the assembled sterilization unit 1810 is coaxially stored in the storage unit 1802, and then the injection unit 1803 is placed in the storage unit 1802. Install. As a result, the sterilization unit 1810 has a stepped surface 9 (provided at an intersecting portion from the piping portion 1801) of the internal water passage of the accommodating portion 1802 and a distal end surface of the male screw portion of the injection portion 1802 screwed into the female screw. (The base end surface of the injection unit 1802) and is fixedly held. At this time, as in the case of the twelfth embodiment, the sterilization unit 1810 may insert either the upper isolation screen 1811 or the lower isolation screen 1816 as the back side. In this state, when raw water is supplied to the water passage in the pipe portion 1801 of the sprinkler 1800 and passed through, the raw water passing through the water passage in the pipe portion 1801 is crossed between the pipe portion 1801 and the accommodating portion 1802. Into the sterilization unit 1810 inside the injection unit 1802. Then, after the raw water enters the sterilization unit 1810, the small holes in the base end side isolation screen plate (one of the upper isolation screen plate 1811 and the lower isolation screen plate 1816) are provided in the same manner as in the third embodiment. From the base metal body 1812 and the noble metal body 1814 to flow into the entire gap space and flow in the axial direction, so that the front end-side isolation screen plates (the upper isolation screen 1811 and the lower isolation screen 1816 It flows out from the other small hole. At this time, since the concave groove of the base metal body 1812 promotes water flow, it is possible to secure a water discharge amount similar to a normal water discharge amount. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 1812 into the water flow, and sufficient sterilizing function and mineral supplement to the raw water despite continuous water discharge (transient water). Add functionality. Then, the raw water containing metal ions that has flowed out of the sterilization unit 1810 is sprayed from the spray unit 1803 and becomes splashed water scattered by the scattering unit 1804. Here, the sprinkler 1800 is used only in the event of an emergency such as a fire, and is normally in a Ryoyo state for a long period of time. Although bacteria are propagated in the staying water and the water environment is likely to cause slime and the like, according to the present embodiment, even when not in use, the sterilization unit 1810 causes the piping unit 1801 and the accommodation unit 1802 to be used. In addition, the stagnant water in the injection unit 1803 can be reliably sterilized and sterilized to maintain the state of fresh water, thereby preventing problems caused by the occurrence of slime and the like.

Embodiment 19
As shown in FIG. 47, the water sterilizer according to the nineteenth embodiment is embodied in a small circulating filtration device 1900. The circulating filtration device 1900 includes a support plate 1901 that is placed and fixed on the floor surface, a small filtration tank 1902 that is made of metal that is erected and fixed on the support plate 1901, and a lower side wall of the filtration tank 1902. A cylindrical water supply pipe 1903 that is inserted into the filtration tank 1902 and connected to the lower part of the side wall of the filtration tank 1902 below the water supply pipe 1903 and communicates with the internal space of the filtration tank 1902. A cylindrical drain pipe 1904 is provided. The filtration tank 1902 is a watertight casing having a large cylindrical shape with a hemispherical upper end, and positioning means and fixing means (not shown) so that the sterilization unit 1910 is coaxial in the center of the internal space. It is positioned and fixed by etc. The filtration tank 1902 is composed of a cylindrical lower side part fixed to the support plate 1901 and a cylindrical upper part with a hemispherical head having the same shape as the lower side part. The sterilization unit 1910 is fixed inside with the upper part removed from the lower part, and then the upper part is attached to the lower part in a watertight manner. As a result, the filtration tank 1902 is assembled. Moreover, the water supply pipe 1903 penetrates the filtration tank 1902 and is inserted in a watertight manner, and an external pipe such as a water pipe is detachably connected to a base end (upstream end) thereof. Further, the water distribution pipe 1904 has a base end (upstream end) fixed to the center of the lower end surface of the sterilization unit 1910 in a watertight manner inside the filtration tank 1902, and a tip end is led out from the filtration tank 1902 to the outside and protruded. ing. An external pipe such as a water pipe is detachably connected to the tip of the water distribution pipe 1904.

[Sterilization unit]
As the sterilization unit 1910 that is mounted and fixed in the filtration tank 1902, the same one as the sterilization unit 1110 of Embodiment 12 can be used. That is, the sterilization unit 1910 has an upper side having the same configuration as the upper isolation net 1111, the base metal body 1112, the inner isolation net cylinder 1113, the noble metal body 1114, the outer isolation net 1115, and the lower isolation net 1116 of the sterilization unit 1110. It consists of an isolation net plate 1911, a base metal body 1912, an inner isolation net cylinder 1913, a noble metal body 1914, an outer isolation net plate 1915 and a lower isolation net plate 1916. Further, the upper isolation mesh plate 1911, the inner isolation mesh tube 1913, the outer isolation mesh plate 1915, and the lower isolation mesh plate 1916 respectively have small holes 1911a, 1915a, 1916a formed on the entire surface, and support lines on both the front and back surfaces. The opposing members (base metal body 1912, noble metal body 1914, etc.) are supported by 1911b, 1913b, 1915b, 1916b or a supporting point in line contact or point contact. On the other hand, the base metal body 1912 as the first reactant is a chrysanthemum column having a groove similar to the groove 212a of the base metal portion 212, and the noble metal body 1914 as the second reactant is a corresponding cylindrical shape. is there.

[Function and effect]
The circulation filtration device 1900 of the nineteenth embodiment removes the upper part from the lower part of the filtration tank 1902, disposes and fixes the assembled sterilization unit 1910 at a predetermined position in the filtration tank 1902, and lowers the upper part. Install on the side. At this time, as in the case of the twelfth embodiment, the sterilization unit 1910 may arrange either the upper isolation screen 1911 or the lower isolation screen 1916 as the lower side (downstream side). In this state, when raw water is supplied to the water supply pipe 1903 from an external pipe (not shown) connected to the water supply pipe 1903 and passed through the filter tank 1902, the inside of the filter tank 1902 is moved along the inner surface of the filter tank 1902. The flowing raw water flows into the inside from the upper end of the sterilization unit 1910 in the filtration tank 1902. After the raw water enters the sterilization unit 1910, the small hole 1911a in the upper end side separation screen (one of the upper side separation screen 1911 and the lower side separation screen 1916) is provided in the same manner as in the third embodiment. , 1916a flows into the entire gap space between the base metal body 1912 and the noble metal body 1914 and flows in the gap space in the axial direction. It flows out from the small holes 1911a and 1916a on the other side of 1916. At this time, since the concave groove of the base metal body 1912 promotes water flow, it is possible to secure a water discharge amount similar to a normal water discharge amount. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 1912 into the water flow, and sufficient sterilizing function and mineral supplement to the raw water despite continuous water discharge (transient water). Add functionality. Then, the raw water containing metal ions flowing out from the sterilization unit 1910 is discharged to the external pipe through the water passage of the water distribution pipe 1904, and is supplied to various water supply apparatuses etc. through which the external pipe communicates, and finally from the water supply apparatus etc. Discharged.

Embodiment 20
As shown in FIG. 48, the water sterilization apparatus according to the twentieth embodiment is embodied in a large circulation filtration apparatus 2000. Circulating filtration device 2000 is fixed to the upper end of support tank 2001 that is erected and supported on the floor, a large filter tank 2002 that is made of metal that is erected and supported by support leg 2001, and the filter tank 2002. An attachment portion 2003 for attaching and fixing the upper side of the filtration tank 2002 to a wall surface or the like; a cylindrical water supply pipe 2004 that is inserted into the center of the side wall of the filtration tank 2002 and communicates with the internal space of the filtration tank 2002; A bent cylindrical drain pipe 2005 that is inserted into the center of the bottom wall of the filtration tank 2002 and communicates with the internal space of the filtration tank 2002, and two sterilization units 2010 are disposed and fixed inside the filtration tank 2002. And a fixing portion 2006. The filtration tank 2002 is a watertight casing having a large cylindrical shape with a lower end curved and an upper end flat, and a pair of sterilization units 2010 are fixed to the left and right of the internal space so as to extend vertically. Positioned and fixed by a portion 2006. In addition, the filtration tank 2002 attaches the attachment part 2003 of an upper end detachably and watertightly, fixes the sterilization unit 2010 inside in the state which removed the attachment part 2003 from the filtration tank 2002, and is attached after that. The part 2003 is assembled in a watertight manner at the upper end of the filtration tank 2002 for assembly. The water supply pipe 2004 penetrates the filtration tank 2002 and is inserted in a watertight manner, and an external pipe such as a water pipe is detachably connected to a base end (upstream end) thereof. Further, the water distribution pipe 2005 is fixed in a watertight manner to the filtration tank 2002 so that the base end (upstream end) of the water distribution pipe 2005 is opposed to the lower end side of the sterilization unit 2010, and its distal end portion is externally connected to the filtration tank 1902. Protrusively led out watertight. An external pipe such as a water pipe is detachably connected to the tip of the water distribution pipe 2005.

[Sterilization unit]
As each sterilization unit 2010 that is fixed in the filtration tank 2002, the same one as the sterilization unit 1110 of the twelfth embodiment can be used. That is, each sterilization unit 2010 has the same configuration as the upper isolation screen 1111, the base metal body 1112, the inner isolation screen cylinder 1113, the noble metal body 1114, the outer isolation screen 1115, and the lower isolation screen 1116 of the sterilization unit 1110. It consists of an upper isolation mesh plate 2011, a base metal body 2012, an inner isolation mesh tube 2013, a noble metal body 2014, an outer isolation mesh plate 2015, and a lower isolation mesh plate 2016. Further, the upper isolation mesh plate 2011, the inner isolation mesh tube 2013, the outer isolation mesh plate 2015, and the lower isolation mesh plate 2016 have small holes 2011a, 2015a, and 2016a formed on the entire surface, respectively, and support lines on both the front and back surfaces. Opposing members (base metal body 2012, noble metal body 2014, etc.) are supported by line contact or point contact by 2011b, 2013b, 2015b, 2016b or a support point. On the other hand, the base metal body 2012 as the first reactant is a chrysanthemum column having a groove similar to the groove 212a of the base metal portion 212, and the noble metal body 2014 as the second reactant is a corresponding cylindrical shape. is there.

[Function and effect]
The circulation filtration device 2000 according to the twentieth embodiment is attached by removing the attachment portion 2003 at the upper end of the filtration tank 2002, placing the assembled sterilization unit 2010 at a predetermined position in the filtration tank 2002, and fixing it by the fixing portion 2006. A part 2003 is attached to the upper end of the filtration tank 2002. At this time, as in the case of the twelfth embodiment, the sterilization unit 2010 may be arranged with either the upper isolation screen 2011 or the lower isolation network 2016 as the lower side (downstream side). In this state, when raw water is supplied from an external pipe (not shown) connected to the water supply pipe 2004 to the water supply pipe 2004 and passed through the filter tank 2002, the inside of the filter tank 2002 is moved along the inner surface of the filter tank 2002. The flowing raw water flows into the respective interiors from the upper ends of the pair of sterilization units 2010 in the filtration tank 2002. Then, after the raw water enters the respective sterilization units 2010, as in the case of the third embodiment, the upper end side isolation screen (one of the upper isolation screen 2011 and the lower isolation screen 2016) is small. The holes 2011a, 2016a flow into the entire gap space between the base metal body 2012 and the noble metal body 2014, flow in the gap space in the axial direction, and the lower end side separation screen (the upper side separation screen 2011 and the lower side separation). It flows out from the small holes 2011a and 2016a on the other side of the mesh plate 2016. At this time, since the concave groove of the base metal body 2012 promotes water flow, it is possible to ensure a water discharge amount similar to a normal water discharge amount. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 2012 into the water flow, and sufficient sterilization function and mineral supplement to the raw water despite continuous water discharge (transient water). Add functionality. Then, the raw water containing metal ions flowing out from the sterilization unit 2010 is discharged to the external pipe through the water pipe of the water distribution pipe 2005, and is supplied to various water supply devices etc. through which the external pipe leads, and finally from the water supply device etc. Discharged.

Embodiment 21
As shown in FIG. 49, the water sterilization apparatus according to Embodiment 21 is embodied in a pipe intermediate mounting part (pipe intermediate mounting joint) 2100. The pipe intermediate mounting part 2100 is integrally formed with both ends of the cylindrical pipe part 2101 that can be connected to the water pipe and the pipe part 2101, and attaches the water pipe on the upstream side and the water pipe on the downstream side in a detachable manner. Male screw parts 2102 and 2103, and a substantially cylindrical housing part that is integrally formed by protruding from the center of the upper surface side of the pipe part 2101 at a substantially right angle (substantially T-shaped) and has a male screw formed on the outer peripheral surface of the tip part. 2104 and a flat partition wall 2105 that divides the inside of the water passage of the piping portion 2101 at the center of the housing portion 2104. The accommodation part 2104 has a circular opening at the upper end, and the entire internal space is an accommodation space for accommodating the sterilization unit 2110. Further, the partition wall 2105 has a top wall portion (a portion corresponding to the peripheral wall of the piping portion 2101) that closes the circular opening at the lower end of the housing portion 2104, and the sterilization unit 2110 accommodated in the housing portion 2104 in the top wall portion. A circular inflow port 2105a that opposes one radial side (upstream half) and a circular outflow port 2105b that opposes the other radial side (downstream half) of the sterilization unit 2110. Yes. Further, an attachment portion 2107 for fixing the pipe intermediate attachment portion frequency 2100 to a wall surface or the like is integrally formed at the center position on the lower surface side of the piping portion 2001 and the both side positions of the accommodation portion 2004 on the upper surface side. Yes. On the other hand, a cap 2120 having a female screw threadedly engaged with a male screw of the housing portion 2004 is detachably attached to the opening at the upper end of the housing portion 2004 so that the upper end opening of the housing portion 2004 is watertight. It is supposed to be blocked.

[Sterilization unit]
As the sterilizing unit 2110 accommodated in the accommodating portion 2104 of the pipe attachment part 2100, the same one as the sterilizing unit 1110 of the twelfth embodiment can be used. That is, the sterilization unit 2110 has the same configuration as the upper isolation net 1111, the base metal body 1112, the inner isolation net cylinder 1113, the noble metal body 1114, the outer isolation net 1115, and the lower isolation net 1116 of the sterilization unit 1110. It consists of an isolation net plate 2111, a base metal body 2112, an inner isolation net cylinder 2113, a noble metal body 2114, an outer isolation net plate 2115, and a lower isolation net plate 2116. In addition, the upper isolation screen 2111, the inner isolation screen cylinder 2113, the outer isolation screen 2115, and the lower isolation screen 2116 are each formed with a small hole on the entire surface, and by the support lines or support points on both the front and back surfaces, Opposing members (base metal body 2112, noble metal body 2114, etc.) are supported by line contact or point contact. On the other hand, the base metal body 2112 as the first reactant has a chrysanthemum column shape having a groove similar to the groove 212a of the base metal portion 212, and the noble metal body 2114 as the second reactant has a corresponding cylindrical shape. is there. The outer diameter of the sterilizing unit 2110 (outer diameter of the outer isolation net tube 2115) is set to be approximately the same as the inner diameter of the housing portion 2104, and the axial length is set to be substantially the same as the axial length of the internal space of the housing portion 2104.

[Assembly method and effects]
In the pipe intermediate mounting component 2100 according to the twenty-first embodiment, the cap 2120 is removed from the upper end of the housing portion 2104, and the sterilized unit 2110 in the assembled state is housed and disposed at a predetermined position in the housing portion 2104. Install on top. At this time, as in the case of the twelfth embodiment, the sterilization unit 2110 may be arranged with either the upper isolation screen 2111 or the lower isolation screen 2116 as the lower side (downstream side). In this state, when raw water is passed from the upstream water pipe (not shown) connected to the pipe part 2101 to the pipe part 2101, the raw water flowing through the water passage in the pipe part 2102 is transferred to the pipe part 2101. It collides with the partition wall 2105 and flows into the interior from the upstream half of the sterilization unit 2110 in the housing portion 2104 through the inlet 2105a of the partition wall 2105. Then, after the raw water enters the sterilization unit 2110, as in the case of the third embodiment, one side (one of the upper isolation screen 2111 and the lower isolation screen 2116) of the lower side isolation screen ( The small gap on the inlet 2105a side) flows into the entire gap space between the base metal body 2112 and the noble metal body 2114 and fills the gap space, and the other side of the separation mesh plate on the lower end side (outlet 2105b side). ) Through the outlet 2105b of the partition wall 2105 and out into the water passage of the piping portion 2101 (downstream side of the partition wall 2105). At this time, since the concave groove of the base metal body 2112 promotes water flow, a water discharge amount similar to a normal water discharge amount can be ensured. At this time, metal ions (Zn ions and Mg ions) are eluted from the base metal body 2112 into the water flow, and sufficient sterilizing function and mineral supplement to the raw water despite continuous water discharge (transient water). Add functionality. Then, the raw water containing metal ions flowing out from the sterilization unit 2110 is discharged to the downstream water pipe through the water passage of the pipe part 2101 and is supplied to various water supply devices etc. through which the water pipe passes. It is discharged from a water supply device.

Embodiment 22
As shown in FIG. 50, the water sterilization apparatus according to Embodiment 22 is embodied in a pipe intermediate mounting part (pipe intermediate mounting joint) 2200. The pipe intermediate mounting part 2200 is integrally formed with both ends of the cylindrical pipe part 2201 that can be connected to the water pipe and the pipe part 2101, and attaches the upstream water pipe and the downstream water pipe in a detachable manner. And a female screw part 2202 and a male screw part 2203 for projecting from the center of the upper surface side of the pipe part 2201 at a substantially right angle (substantially T-shaped) and integrally formed, and a substantially cylindrical shape having a male screw formed on the outer peripheral surface of the tip part. And a partition wall 2205 that divides the inside of the water passage of the piping part 2201 at a position facing the lower end of the connection part 2204. The partition wall 2205 includes an upstream inclined portion that is inclined downward from a downstream position of the connecting portion 2204 on the upper side of the inner peripheral surface of the piping portion 2201 and extends to an upstream position on the periphery of the lower end opening of the connecting portion 2204, and A horizontal portion extending horizontally from the upstream inclined portion to the downstream side of the peripheral edge of the lower end opening of the housing portion along the axis of the water passage of the piping portion 2201, and an inner peripheral surface of the piping portion inclined downward from the horizontal portion. A substantially Z-shaped bent plate shape including a downstream inclined portion extending to the lower side is formed, the water passage of the piping portion 2201 is divided into the upstream side and the downstream side at the lower end opening portion of the connecting portion 2204, and the horizontal A water passage hole 2205a is formed through the portion. Further, the inside of the connecting portion 2204 has a cylindrical shape with a predetermined diameter smaller than the inner diameter of the connecting portion 2204, and the connecting portion 2204 from the upper surface position of the horizontal portion of the partition wall 2205 which is a position below the connecting portion 2204. A cylindrical water guide portion 2206 extending to the upper position of the water is coaxially accommodated, and the lower end thereof is connected in watertight contact with the periphery of the water passage hole 2205a of the partition wall 2205 via an O-ring. Further, an enlarged diameter portion 2207 having a trapezoidal thick cylindrical shape from the water guide portion 2206 and the housing portion 2204 is integrally formed at the upper end of the water guide portion 2206 in a coaxial manner. The internal water passage of the enlarged diameter portion 2207 is disposed coaxially with the internal water passage of the insertion portion 2206 and has the same diameter.

On the other hand, a housing 2218 is connected to the upper end of the connecting portion 2204 via an attachment member 2220. That is, the housing 2218 is made of stainless steel and has a substantially cylindrical shape in which the upper end of the cylindrical portion having a larger diameter than the enlarged diameter portion 2207 is closed with a hemispherical top and the lower end is a circular opening. Further, the attachment member 2220 has a cylindrical shape having an inner diameter substantially the same as the outer diameter of the connecting portion 2204, a female screw portion that engages with a male screw on the outer peripheral surface of the upper end portion of the connecting portion 2204, and an outer diameter of the housing 2218. Are integrally formed with a fitting portion that has the same inner diameter as that of the lower end portion of the housing 2218 and is fitted in a watertight manner. Then, the attachment member 2220 is screwed into the connecting portion 2204 to be watertightly connected to the mounting member 2220, and the lower end portion of the housing 2218 is fitted in a watertight manner to be inserted into the housing through the connecting portion 2204. 2218 is connected to the piping part 2201. At this time, the lower end of the enlarged diameter portion 2207 is located a predetermined distance above the inner bottom surface of the attachment member 2220, and a space is formed between the lower end surface of the enlarged diameter portion 2207 and the inner bottom surface of the attachment member 2220. The outer diameter of the water guide portion 2206 is smaller than the inner diameter of the female screw portion of the mounting member 2220 by a predetermined diameter, and a ring-shaped gap is formed between the upper outer peripheral surface of the water guide portion 2206 and the outer peripheral surface of the female screw portion of the mounting member 2220. A space is formed. Further, a ring-shaped gap space (gap) is also formed between the lower outer peripheral surface of the water guide portion 2206 and the inner peripheral surface of the connecting portion 2204. Then, the lower space of these enlarged diameter portions 2207 (the uppermost gap space of the water guide portion 2206), the upper gap space of the water guide portion 2206, and the lower gap space of the water guide portion 2206 function as a water passage. It has become. In this way, the water guide portion 2206 has an internal water passage as an inflow passage communicating with the water passage water upstream of the partition wall 2205 in the piping section 2201 through the water passage hole 2205a of the partition wall 2205, and the outer peripheral surface thereof. A series of communication spaces are formed between the connection member 2220 and the inner peripheral surface of the connection portion 2204, and the communication space serves as an outflow passage communicating with a water passage downstream of the partition wall 2205 in the piping portion 2201.

[Sterilization unit]
The sterilizing unit 2210 of the pipe intermediate mounting part 2200 includes an upper isolation net 2211, an inner noble metal body 2212, an inner isolation net cylinder 2213, a base metal body 2214, an outer isolation net cylinder 2215, a lower isolation net cylinder 2216, and an outer noble metal body. Housing 2218. The inner noble metal body 2212 is made of stainless steel similar to the noble metal body of the above embodiment, and has a cylindrical shape having the same inner diameter as the outer diameter of the enlarged diameter portion 2207. The inner noble metal body 2212 is formed near the top of the housing 2218 (from the upper end of the cylindrical portion) from the upper surface of the flange portion integrally formed so as to protrude outward with the same width as the inner noble metal body 2212 at the lower end portion of the enlarged diameter portion 2207. It has a cylindrical shape extending coaxially up to the middle of the apex of the top). The lower end portion of the inner noble metal body 2212 is fitted in a watertight manner to the outer peripheral surface of the enlarged diameter portion 2207 through an O-ring with the lower end in contact with the upper surface of the flange portion of the enlarged diameter portion 2207. An inner metal pair 2212 is held upright in the housing 2218. Further, as shown in FIG. 51, the upper end portion of the inner noble metal body 22212 has rectangular irregularities formed at regular intervals in the circumferential direction. The inner isolation net cylinder 2213 is formed into a net-like cylindrical shape having the same inner diameter as the outer diameter of the inner noble metal body 2212 by an electrically insulating material, like the inner isolation net cylinder 13 and the like of the above-described embodiment. A small hole 2213a is provided on the entire surface, and support wires 2213b for line contact are provided on the inner peripheral surface side and the outer peripheral surface side, respectively. The inner isolation mesh cylinder 2213 has a cylindrical shape that extends coaxially from the vicinity of the lower end of the housing 2218 (the upper end of the lower isolation mesh plate 2216) to the vicinity of the upper end of the cylindrical portion of the housing 2218. The base metal body 2214 has a cylindrical shape with the same length (same height) as the inner isolation net cylinder 2213, like the base metal body 13 and the like of the above embodiment, and a support line 2213b on the outer peripheral surface side of the inner isolation net cylinder 2213. The inner peripheral surface is supported by line contact and is fitted to the outer peripheral side of the inner isolation net tube 2213 at the same height. The outer isolation net cylinder 2215 has a cylindrical shape having the same length (the same height) as the inner isolation net cylinder 2213 and the base metal body 2214, similar to the outer isolation net cylinder 15 and the like of the above embodiment, and the outer periphery of the base metal body 2214. The surface is supported by line contact via a support line 2215b and is fitted to the outer peripheral side of the base metal body 2214 at the same height. In addition, the outer peripheral surface of the outer isolation net tube 2215 is in line contact with the inner peripheral surface of the cylindrical portion of the housing 2218 through a support line 2215b.

In the present embodiment, the cylindrical base metal body 2214 constitutes a first reactant, and the second reactant is formed on the entire inner peripheral surface and outer peripheral surface of the cylindrical base metal body 2214, respectively. The inner noble metal body 2212 and the outer noble metal body (housing) 2218 are arranged so as to face each other, and the inner isolation net cylinder 2213 has a uniform thickness due to line contact between the inner peripheral surface of the base metal body 2214 and the outer peripheral surface of the inner noble metal body 2212. The inner space between the outer peripheral surface of the base metal body 2214 and the inner peripheral surface of the outer noble metal body (the inner peripheral surface of the cylindrical portion of the housing 2218) is uniform due to the line contact of the outer isolation mesh cylinder 2215. A gap space outside the thickness is formed. In addition, as described above, the inner isolation net cylinder 2213 and the outer isolation net cylinder 2215 may support the inner peripheral surface and the outer peripheral surface of the base metal body 2214 by point contact with the support points, respectively. From the viewpoint of facilitating the fluidity of the water flow, it is more preferable to use point contact. Thus, in the present embodiment, the inner isolation net cylinder 2213 and the outer isolation net cylinder 2215 are provided between the inner noble metal body 2212 and the base metal body 2214 and between the base metal body 2214 and the outer noble metal body (housing 2218), respectively. The space | interval holding member for isolating between and forming a clearance space is comprised. On the other hand, the upper isolation screen 2211 is formed in a net shape from the same electrically insulating material as the upper isolation screen 11 in the above embodiment, but is sterilized like the upper isolation screen 11 in the above embodiment. It is not a disc shape covering the entire upper end surface of the unit, but has the same inner diameter as that of the inner noble metal body 2212 and substantially the same outer diameter as that of the outer isolation mesh cylinder 2215 (slightly above the cylindrical portion of the housing 2218). It is a ring plate-like net shape having an outer diameter corresponding to the inner diameter of the lower end of the hemispherical portion of the position. The upper isolation mesh plate 2211 is coaxially fitted to the outer peripheral surface of the inner noble metal body 2212 and placed on the upper ends of the inner isolation member 2213, the base metal body 2214, and the outer isolation net cylinder 2215, and the upper end surfaces thereof. Is isolated from the opposing member. Further, the lower isolation screen 2216 is formed in a net shape from the same electrically insulating material as the lower isolation screen 16 in the above embodiment, but the lower isolation screen 16 in the above embodiment, etc. Such a sterilization unit is not a disc that covers the entire lower end surface, but a ring plate-like net having the same inner diameter as the outer diameter of the insertion portion 2206 and the outer diameter of the outer isolation net cylinder 2215 Has been. The lower isolation screen 2216 is coaxially fitted to the outer peripheral surface of the insertion portion 2206 and is placed on the inner bottom surface (upper surface of the bottom wall) of the mounting member 2220 that supports the housing 2218. The lower end of the inner isolation member 2213, the base metal body 2214, and the outer isolation net cylinder 2215 is placed in contact with the upper surface of the mesh plate 2216, and the lower isolation mesh plate 2216 faces the lower isolation surface 2216 from the member (attachment member 2220). It comes to isolate.

[Assembly method and effects]
In the pipe intermediate mounting part 2200 of the twenty-second embodiment, the lower isolation mesh plate 2216 is placed in advance on the bottom surface of the large-diameter fitting part of the attachment member 2220, and the female screw part is inserted into the female screw part from the fitting part side. The water guide portion 2206 is inserted and the expanded diameter portion is disposed in the fitting portion. In this state, the lower end portion of the water guide portion 2206 (the portion protruding downward from the female screw portion of the mounting member 2220) is connected to the connecting portion of the piping portion 2201. 2204 and screwing the female screw of the attachment member 2220 into the connecting portion 2204 to fix the lower end of the water guide portion 2206 in a watertight manner around the water passage hole 2205a of the partition wall 2205, and to attach the attachment member 2220. It is fixed to the connecting portion 2204 in a watertight manner. Next, the lower end portion of the inner noble metal body 2212 is fitted and fixed to the enlarged diameter portion 2207 exposed inside the mounting portion of the fixed mounting member 2220, and then the inner isolation mesh cylinder is formed on the outer periphery of the inner noble metal body 2212. 2213 is fitted and its lower end is brought into contact with and fixed to the lower isolation mesh plate 2216, and then a base metal body 2214 is fitted to the outer periphery of the inner isolation mesh tube 2213, and its lower end is fitted to the lower isolation mesh plate. Next, the outer isolation mesh cylinder 2215 is fitted and fixed to the outer periphery of the base metal body 2214 and the lower end thereof is fixed to the lower isolation mesh plate 2216 and fixed. At this time, the inner noble metal body 2212 protrudes further upward from the upper ends of the inner isolation net cylinder 2213, the base metal body 2214, and the outer isolation net cylinder 2215 that are fitted coaxially. In this state, the upper isolation net plate 2211 is fitted from the upper end of the inner noble metal body 2212 and placed on the upper end surfaces of the inner isolation net cylinder 2213, the base metal body 2214 and the outer isolation net cylinder 2215. Finally, a housing 2218 as an outer noble metal body is placed from above the inner noble metal body 2212, the upper isolation net plate 2211, the inner isolation net cylinder 2213, the base metal body 2214 and the outer isolation net cylinder 2215 in the assembled state, and the lower end thereof is covered. The fitting part of the mounting member 2220 is fitted in a watertight manner. Thus, as schematically shown in FIG. 51, the inner noble metal body 2212 and the outer noble metal body (housing 2218) are predetermined inside and outside the cylindrical base metal body 2214 via the inner isolation net cylinder 2213 and the outer isolation net cylinder 2215. They are arranged opposite to each other with a gap between them.

As shown in FIG. 52, for example, as shown in FIG. 52, the pipe halfway mounting part 2200 assembled in this way is connected to the external pipe from the water heater WH to the bathtub B by the female screw part 2202 and the male screw part 2203 of the pipe part 2201. It is installed in the middle of the PI. In this state, when water or hot water is supplied from the water heater WH to the bathtub B through the external pipe PI, the water in the external pipe PI collides with the partition wall 2205 in the pipe section 2201 and flows along the lower surface of the upstream inclined section. Then, it flows into the water passage in the water guide 2206 through the inlet 2205a of the partition wall 2205, and flows into the inner noble metal body 2212 of the sterilization unit 2210 from the upper end opening of the water guide 2206. Then, the inflowing water flows out from the concave portion at the upper end of the inner noble metal body 2212, flows downward along the top inner surface of the housing 2218, and enters the inside of the base metal body 2214 from the small hole 2212 a of the upper isolation screen 2211. Flows into the gap space between the inner noble metal body 2212 and flows downward along the inner gap space, and from the lower end of the gap space to the outer periphery of the enlarged diameter portion 2207 and the outer periphery of the water guide portion 2206. Through the communication space (outflow passage) formed on the side, the water flows into the water passage downstream of the partition wall 2205 of the piping portion 2201. Similarly, the water that flows out from the concave portion at the upper end of the inner noble metal body 2212 enters the gap space between the small hole 2212a of the upper separating net 2211 and the outer noble metal body (housing 2218) outside the base metal body 2214. It flows in and flows downward along the outer clearance space, and is formed from the lower end portion of the clearance space to the outer peripheral side of the water guide portion 2206 from the outer peripheral side of the enlarged diameter portion 2207 through the upper isolation screen 2211. It passes through the communication space (outflow passage) and flows into the water passage downstream of the partition wall 2205 of the piping part 2201. At this time, metal ions (Zn ions and Mg ions) are eluted into the water flow from the inner peripheral surface and the outer peripheral surface of the base metal body 2214, respectively, and are sufficient for water flow despite continuous water discharge (transient water). A new sterilizing function and mineral replenishment function. Then, the water containing metal ions flowing out from the sterilization unit 2110 to the downstream side of the pipe part 2201 flows through the water passage of the pipe part 2201 and flows in the water pipe of the external pipe PI on the downstream side and is discharged into the bathtub B. Is done.

Embodiment 23
As shown in FIG. 53, the water sterilization apparatus according to the twenty-third embodiment is embodied as a rectangular river purification apparatus. The river purification apparatus is formed by closely arranging a plurality of square sterilization units 2310. The sterilizing unit 2310 includes an inner noble metal body 2311, an inner isolation member 2312, a base metal body 2313, an outer isolation member 2314, and an outer noble metal body 2315. The inner noble metal body 2311 has a rectangular cylindrical shape such as a square made of stainless steel similar to the noble metal body 14 of the above embodiment. The base metal body 2313 is made of the same zinc-magnesium alloy as the base metal body 12 and the like of the above-described embodiment, and has a rectangular cylinder shape having a larger diameter (larger width and height) than the inner noble metal body 2311. Further, the outer noble metal body 2315 is made of the same stainless steel as the noble metal body 14 and the like of the above-described embodiment, and has a rectangular cylinder shape having a larger diameter (large width and height) than the base metal body 2313. In the present embodiment, an inner noble metal body 2311 as a second reactant is provided on an inner surface and an outer surface of a rectangular tube-shaped base metal body 2312 as a first reactant via an inner isolation member 2312 and an outer isolation member 2315. And the outer noble metal body 2314 are arranged opposite to each other with a predetermined gap interval therebetween. The inner noble metal body 2311, the base metal body 2313, and the outer noble metal body 2315 have the same length (same axial length).

The inner separating member 2312 as an inner spacing member is fixed to the outer surface of the inner noble metal body 2311 through a fixing portion 2312b. . That is, the adhering portion 2312b has a long channel plate shape made of stainless steel, and is adhering to both ends (near the corner portion) of each of the four surfaces which are the outer peripheral surfaces of the inner noble metal body 2311 by welding or bonding. Has been. The isolation part 2312a has an elongated shape with a pentagonal cross section (home base shape), and has an apex having an angle on one side in the thickness direction (height direction), and the other side in the thickness direction of the fixing part 2312b. It is fixed to the inner surface by adhesion or the like. The isolation portion 2312a has the same length as the fixing portion 2312b and can be fixed over the entire length of the fixing portion 2312b. In addition to this, a plurality of elongated shapes having a shorter length than the fixing portion 2312b can be used. The separating portion 2312a may be fixed at a predetermined interval in the length direction of the fixing portion 2312b. On the other hand, the outer separation member 2314 as the outer spacing member is configured to fix the isolation portion 2314a made of the same electrical insulating material as the outer isolation mesh tube 15 or the like to the inner surface of the outer noble metal body 2315 via the fixing portion 2314b. ing. That is, the adhering portion 2314b has a long channel plate shape made of stainless steel, and is adhering to both ends (near the corner portion) of each of the four surfaces that are the inner surface of the outer noble metal body 2315 by welding or adhesion. ing. The isolation part 2314a has an elongated shape with a pentagonal cross section (home base shape), an apex having an angle on one side in the thickness direction (height direction), and the other side in the thickness direction of the fixing part 2314b. It is fixed to the inner surface by adhesion or the like. The isolation portion 2314a has the same length as the fixing portion 2314b, and can be fixed over the entire length of the fixing portion 2314b. In addition, the isolation portion 2314a has a plurality of elongated shapes having a shorter length than the fixing portion 2314b. The isolation part 2314a may be fixed at a predetermined interval in the length direction of the fixing part 2314b. The inner isolation member 2312 has the same length as the inner noble metal body 2311 and is fixed over the entire length of the inner noble metal body 2311, or a member shorter than the inner noble metal body 2311 is used as the inner noble metal body 2311. The body 2313 may be fixed in parallel on the same line or different lines with a predetermined interval in the length direction. Similarly, the outer isolation member 2314 has the same length as the outer noble metal body 2314 and is fixed over the entire length of the outer noble metal body 2314, or the outer isolation member 2314 has an outer length shorter than the outer noble metal body 2314. The noble metal body 2314 may be fixed in parallel on the same line or different lines at a predetermined interval in the length direction.

The inner isolation member 2312 has the same height as the thickness of the gap space between the outer surface of the inner noble metal body 2311 and the inner surface of the base metal body 2313 (interval between the opposing surfaces), and the outer side of the inner noble metal body 2311. When the base metal body 2313 is fitted to the base metal body 2313, the apex of the isolation part 2312 a of the inner isolation member 2312 is in point contact with and supported by the inner surface of the base metal body 2313. Similarly, the outer isolation member 2314 has the same height as the thickness of the gap space between the inner surface of the outer noble metal body 2315 and the outer surface of the base metal body 2313 (interval between the opposing surfaces), and the outer noble metal body When the base metal body 2313 is fitted inside 2315, the apex of the isolation part 2314 a of the outer isolation member 2314 is in point contact with and supported by the outer surface of the base metal body 2313. The sterilization unit 2310 fits the base metal body 2313 outside the inner noble metal body 2311 to which the inner isolation member 2312 is fixed, supports the base metal body 2313 by point contact with the inner isolation member 2312, and An inner clearance space is formed between the outer surface and the inner surface of the base metal body 2313, and the outer noble metal body 2315 to which the outer isolation member 2314 is fixed is fitted to the outer side of the base metal body 2313. The body 2313 is supported by point contact to form an outer clearance space between the inner surface of the outer noble metal body 2315 and the outer surface of the base metal body 2313, and the inner noble metal body 2311, the base metal body 2313, and the outer noble metal body 2314 are coaxial. It is assumed that they are arranged in three layers so as to be.

[How to use and effects]
The river purification apparatus of the twenty-third embodiment prepares as many sterilization units 2310 as are necessary according to the amount of water or the flow rate of the river S to be purified. Alternatively, as shown in FIG. 53, it is placed in a housing groove RG provided in the riverbed RF. At this time, the sterilization units 2310 are arranged in close contact with each other so as to extend along the flowing direction of the river S. Then, the flowing water of the river S flows into the clearance space between the inner noble metal body 2311 inside the base metal body 2313 and the upstream end in the flowing water direction along the inner clearance space. Flows from the downstream end of the gap space into the running water of the river S. Similarly, the flowing water of the river S flows into the gap space between the outer noble metal body 2315 outside the base metal body 2313 and flows from the upstream end toward the downstream end along the outer gap space. Then, it flows out into the running water of the river S at the downstream end of the gap space. At this time, metal ions (Zn ions and Mg ions) are eluted from the inner surface and the outer surface of the base metal body 2313 into the flowing water of the river S, respectively, and have sufficient sterilizing function and minerals against the flowing water despite continuous flowing water. A replenishment function is provided to purify the running water of the river S.

Embodiment 24
As shown in FIG. 54, the water sterilization apparatus according to Embodiment 24 is embodied as a round river purification apparatus. The river purification apparatus is formed by closely arranging a plurality of round sterilization units 2410. The sterilization unit 2410 includes an inner noble metal body 2411, an inner isolation member 2412, a base metal body 2413, an outer isolation member 2414, and an outer noble metal body 2415. The inner noble metal body 2411 has a cylindrical shape made of stainless steel similar to the noble metal body 14 of the above-described embodiment. The base metal body 2413 is made of the same zinc-magnesium alloy as the base metal body 12 and the like in the above embodiment, and has a cylindrical shape having an inner diameter larger than the outer diameter of the inner noble metal body 2411. Further, the outer noble metal body 2415 is made of the same stainless steel as the noble metal body 14 and the like of the above embodiment, and has a cylindrical shape having an inner diameter larger than the outer diameter of the base metal body 2413. In the present embodiment, an inner noble metal as a second reactant is provided on an inner peripheral surface and an outer peripheral surface of a cylindrical base metal body 2412 as a first reactant via an inner isolation member 2412 and an outer isolation member 2415. The body 2411 and the outer noble metal body 2414 are arranged opposite to each other with a predetermined gap interval therebetween. The inner noble metal body 2411, the base metal body 2413, and the outer noble metal body 2415 have the same length (same axial length).

An inner isolation member 2412 as an inner spacing member is configured by fixing an isolation portion 2412a made of an electric insulating material similar to the inner isolation net tube 13 or the like to an outer peripheral surface of the inner noble metal body 2411 via an fixing portion 2412b. Yes. That is, the adhering portion 2412b has a long channel plate shape made of stainless steel, and a predetermined number (5 in the example shown, five at intervals of 72 degrees) is welded on the outer peripheral surface of the inner noble metal body 2411. It is fixed by adhesion or the like. The separating portion 2412a has a long shape with a pentagonal cross section (home base shape), and has an apex having an angle on one side in the thickness direction (height direction), and the other side in the thickness direction of the fixing portion 2412b. It is fixed to the inner surface by adhesion or the like. The isolation portion 2412a has the same length as the fixing portion 2412b and can be fixed over the entire length of the fixing portion 2412b. In addition, the isolation portion 2412a has a plurality of elongated shapes having a shorter length than the fixing portion 2412b. The separating portion 2412a may be fixed at a predetermined interval in the length direction of the fixing portion 2412b. On the other hand, an outer isolation member 2414 as an outer spacing member is formed by separating an isolation portion 2414a made of the same electrical insulating material as the outer isolation mesh cylinder 15 or the like through an adhering portion 2414b on the inner peripheral surface of the outer noble metal body 2415. It is stuck. That is, the adhering portions 2414b are in the form of a long channel plate made of stainless steel, and are arranged at a predetermined number (5 in the illustrated example at intervals of 72 degrees) with a predetermined interval on the inner peripheral surface of the outer noble metal body 2415. It is fixed by welding or adhesion. The separating portion 2414a has an elongated shape with a pentagonal cross section (home base shape), and has an apex having an angle on one side in the thickness direction (height direction), and the other side in the thickness direction of the fixing portion 2414b. It is fixed to the inner surface by adhesion or the like. The isolation portion 2414a has the same length as the fixing portion 2414b, and can be fixed over the entire length of the fixing portion 2414b. In addition to this, a plurality of elongated shapes having a shorter length than the fixing portion 2414b can be used. The isolation part 2414a may be fixed at a predetermined interval in the length direction of the fixing part 2414b. Note that the inner isolation member 2412 has the same length as the inner noble metal body 2411 and is fixed over the entire length of the inner noble metal body 2411 or is shorter than the inner noble metal body 2411. The body 2413 may be fixed in parallel on the same line or different lines with a predetermined interval in the length direction. Similarly, the outer isolation member 2414 has the same length as the outer noble metal body 2414 and is fixed over the entire length of the outer noble metal body 2414 or the outer noble metal body 2414 is shorter than the outer noble metal body 2414. The noble metal body 2414 may be fixed in parallel on the same line or different lines at a predetermined interval in the length direction.

The inner separating member 2412 has the same height as the thickness of the gap space between the outer peripheral surface of the inner noble metal body 2411 and the inner peripheral surface of the base metal body 2413 (interval between the opposing surfaces), and the inner noble metal body When the base metal body 2413 is fitted to the outside of 2411, the apex of the isolation part 2412 a of the inner isolation member 2412 is in point contact with and supported by the inner peripheral surface of the base metal body 2413. Similarly, the outer isolation member 2414 has the same height as the thickness of the gap space between the inner peripheral surface of the outer noble metal body 2415 and the outer peripheral surface of the base metal body 2413 (interval between the opposing surfaces), When the base metal body 2413 is fitted inside the outer noble metal body 2415, the apex of the isolation part 2414 a of the outer isolation member 2414 is in point contact with and supported by the outer surface of the base metal body 2413. The sterilization unit 2410 fits the base metal body 2413 to the outside of the inner noble metal body 2411 to which the inner isolation member 2412 is fixed, supports the base metal body 2413 by point contact by the inner isolation member 2412, and An inner clearance space is formed between the outer peripheral surface and the inner peripheral surface of the base metal body 2413, and the outer noble metal body 2415 to which the outer isolation member 2414 is fixed is fitted to the outer side of the base metal body 2413, thereby 2414 supports the base metal body 2413 by point contact to form an outer clearance space between the inner peripheral surface of the outer noble metal body 2415 and the outer peripheral surface of the base metal body 2413, and the inner noble metal body 2411, the base metal body 2413, and the outer noble metal. It is assumed that the body 2414 is arranged in three layers so as to be coaxial.

[How to use and effects]
The river purification apparatus according to the twenty-fourth embodiment prepares as many sterilization units 2410 as are necessary according to the amount of water or the flow rate of the river S to be purified. Alternatively, as shown in FIG. 54, it is placed in a housing groove RG provided in the riverbed RF. At this time, the sterilization units 2410 are arranged in close contact with each other so as to extend along the flowing direction of the river S. Then, the flowing water of the river S flows into the clearance space between the base metal body 2413 and the inner noble metal body 2411 in the sterilization unit 2410 arranged in this way, and the upstream end in the flowing water direction along the inner clearance space. Flows from the downstream end of the gap space into the running water of the river S. Similarly, the flowing water of the river S flows into the gap space between the outer noble metal body 2415 outside the base metal body 2413 and flows from the upstream end toward the downstream end along the outer gap space. Then, it flows out into the running water of the river S at the downstream end of the gap space. At this time, metal ions (Zn ions and Mg ions) are eluted from the inner peripheral surface and the outer peripheral surface of the base metal body 2413 into the flowing water of the river S, respectively, and are sufficiently sterilized against the flowing water despite continuous flowing water. A function and a mineral replenishment function are added, and the flowing water of the river S is purified.

Modification Example of Embodiment 12 etc. By the way, the water purifier 1100 (FIG. 40) of the above embodiment 12, the spray head 1200 (FIG. 41) of the embodiment 13, and the shower heads 1300 and 1400 of the embodiment 14 (FIG. 42). ), Drawer Shower Faucet 1500 of Embodiment 15 (FIG. 43), Branch Header Adapter of Embodiment 17 (FIG. 45), Sprinkler 1800 of Embodiment 18 (FIG. 46), Small Circulation of Embodiment 19 In the filtration device 1900 (FIG. 47), the large-scale circulation filtration device 2000 (FIG. 48) of the twentieth embodiment, and the piping intermediate mounting part 2100 (FIG. 49) of the twenty-first embodiment, the sterilization units 1110, 1210, 1310, 1410, 1510 , 1710, 1810, 1910, 2010 as base metal bodies 1112, 1212, 1312, 1412, 1 512, 1712, 1812, 1912, and 2012 are made in a chrysanthemum-shaped cross section and provided with a concave groove to ensure the amount of running water and to exert a rectifying effect. What can secure the required flow rate by increasing the capacity of the gap space between the base metal body and the noble metal body (for example, the adapter for the branch header in the seventeenth embodiment, the small circulation filtration device 1900 in the nineteenth embodiment, the embodiment 20, the large-scale circulation filtration device 2000, the piping intermediate mounting component 2100 of the twenty-first embodiment, the piping intermediate mounting component 2200 (FIG. 50) of the twenty-second embodiment, and the like, as in the first embodiment, the base metal body is a simple cylindrical shape. The noble metal body may have a corresponding simple cylindrical shape.

Examples 1 to 3: Combination mode of different metal bodies (single type)
The water sterilization apparatus of the present invention can be used as a sterilization unit by itself as shown in FIG. 55, in addition to a mode in which the sterilization unit 10 and the like are installed in the water supply apparatus as in the above embodiment. Is possible. For example, as shown in FIG. 55 (a), the sterilization unit 2510 has a cylindrical shape on the outside of a chrysanthemum columnar base metal body 2512 (first reactant) via a cylindrical mesh-like separation cylinder network 2513 (interval holding member). A noble metal body 2514 (second reactant) having a circular configuration with a coaxial outer sheath can be used alone to form a sterilizer (Example 1). As shown in FIG. 55 (b), the sterilizing unit 2610 has a chrysanthemum shape on the outer side of the columnar base metal body 2612 (first reactant) via a cylindrical mesh-like separating net 2513 (interval holding member). A cylindrical noble metal body 2614 (second reactant) having a circular configuration with a coaxial outer sheath can be used as a single sterilizer (Example 2). Further, as shown in FIG. 55 (c), the sterilization unit 2710 has a rectangular columnar base metal body 2712 (first reactant) and a rectangular tube network-like isolation tube network 2713 (interval holding member). A cylindrical noble metal body 2714 (second reactant) is coaxially packaged to form a sterilizer by itself (Example 3). These sterilization units 2510, 2610, and 2710 superimpose one noble metal body 2514, 2614, and 2714 on one base metal body 2512, 2612, and 2712 via one isolation net tube 2513, 2613, and 2713. Single type (single layer or single layer type with a gap space as one layer).

Example 4: Combination mode of different metal bodies (double type)
As shown in FIG. 56, the sterilization unit 2810 has a cylindrical base metal body 2814 via a cylindrical net-like separation cylinder network 2813 (interval holding member) outside the columnar inner noble metal body 2812 (second reactant). (First reactant) is coaxially packaged, and further, a cylindrical outer noble metal body 2816 (second reactant) is disposed on the outer side of the base metal body via a cylindrical mesh-like separation tube network 2815 (interval holding member). (Embodiment 4). The sterilization unit 2810 is a double type (gap space is formed by superposing two noble metal bodies 2812 and 2816 on the inside and outside of one cylindrical base metal body 2814 via two isolation net cylinders 2813 and 2815. A multi-layer or double-layer type).

Examples 5 to 8: Base metal body The base metal body used in the water sterilization apparatus of the present invention can have various configurations in addition to those of the above-described embodiment. In the environment, it is preferable to use a columnar type base metal body 2912 shown in FIG. 57 (a), and metal ions are eluted from the outer peripheral surface 2912a (Example 5). Further, in a water flow environment in which a flow rate securing such as a faucet outlet and a rectifying effect are required, it is preferable to use a chrysanthemum columnar base metal body 3012 shown in FIG. 57 (b). Metal ions are eluted (Example 6). In this case, the base metal body 3012 is integrally formed with a taper-shaped head portion 3012y that is reduced in diameter toward the upper side on the upper end side of the chrysanthemum columnar base portion 3012x (the upper end portion such as the upper end in the water discharge port). However, the flow of water flowing toward the outer peripheral surface 3012b of the head 3012y may be more smoothly rectified. The base metal bodies 2912 and 3012 having the above columnar shape are used in the single type sterilization unit. Moreover, in the said double type sterilization unit, it is preferable to use the cylindrical base metal body 3112 shown in FIG.57 (c), and a metal ion is eluted from both the inner peripheral surface and outer peripheral surface (Example 7). . As shown in FIG. 57 (d), a square (such as a hexagonal cross section) base metal body 3212 may be used to elute metal ions from the outer surface 3212a (Example 8).

Examples 9 to 16: Precious metal body The precious metal body used in the water sterilization apparatus of the present invention can have various configurations other than those in the above-described embodiment. In the environment, it is preferable to use a cylindrical type noble metal body 3314 shown in FIG. 58A (Example 9). Further, in the case of a sterilization unit having a gap space of two or more layers such as the double type, a noble metal body 3414 having a cylindrical shape with a slit shown in FIG. 58 (b) is used, and an inner base metal body is provided through the slit 3414a. It is also possible to promote water flow into the water (Example 10). Further, in the case of a sterilization unit having a gap space of two or more layers such as the double type, a noble metal body 3514 having a circular shape with a small circular hole shown in FIG. 58 (c) is used, and a large number of small holes 3514a are interposed. In order to promote water flow to the inner base metal body (Example 11), a noble metal body 3614 having a spiral shape or a coil spring-like cylindrical shape shown in FIG. (Embodiment 12) or using a noble metal body 3714 having a net-like cylindrical shape shown in FIG. 58 (e), and using a large number of meshes 3714a, the inner base metal body is promoted. It is possible to promote water flow to the body (Example 13). Further, in a water flow environment where flow rate securing and rectifying effect such as a faucet outlet are required, a noble metal body 3814 having a cylindrical shape with ribs as shown in FIG. 58 (f) is used and provided at regular intervals in the circumferential direction. The flow rate can be secured and the flow straightening effect can be exhibited through the concave grooves 3814b formed between the curved ribs 3814a and the small concave grooves 3814c having the same curvature formed on the inner surface side of the curved ribs 3814a (Example 14). ), Preferably, a noble metal body 3914 having a chrysanthemum cylindrical shape shown in FIG. 58 (g) is used, and the flow rate is secured and the rectifying effect is exerted through concave grooves provided at regular intervals in the inner and outer circumferential directions. (Example 15). In addition, as shown in FIG.57 (h), you may use the square-shaped (hexagonal cross section etc.) noble metal body 4014 (Example 16).

Example 17: Another Example of Interval Holding Member As described above, the water sterilization apparatus of the present invention can be used as a sterilization unit by itself, as shown in FIG. As in the case of the embodiment, a disc-shaped upper-side separating net 4111 (separating member) having a small hole 4111a, a columnar base metal body 4112 (first reactant), and a cylindrical net-like inner side having a small hole 4113a An isolation net cylinder 4113 (interval holding member), a cylindrical noble metal body 4114 (second reactant), a cylindrical net outer isolation net cylinder 4115 (isolation member) having a small hole 4115a, and a disc network having a small hole 4116a. It can be composed of a lower isolation mesh plate 4116 (isolation member). On the other hand, the inner isolation mesh cylinder 4113 is integrally formed with support points 4113b made of hemispherical protrusions on the inner surface and outer surface of the intersecting portions of the linear portions constituting the net, instead of the support lines 13b and the like, The outer peripheral surface of the inner base metal body 4112 and the inner peripheral surface of the outer noble metal body 4114 are each supported by point contact. In particular, as shown in FIGS. 59 (c) and (d), a sufficient gap for running water is formed between the support points 4113b, and the gap space between the base metal body 4112 and the noble metal body 4114 of the sterilization unit 4110 is formed. It can be confirmed that the entering water flows very smoothly. Further, in the sterilization unit 4110, a support point 4115b formed of a hemispherical protrusion is integrally formed on the inner peripheral surface of the outer isolation net cylinder 4115 at the intersection of the linear parts constituting the net, and the inner noble metal body 4114 is formed. The outer peripheral surface is supported by point contact.

Example 18: Another Example of Outer Isolation Net Tube As shown in FIG. 60, the sterilization unit 4210 has a cylindrical net-like outer isolation net cylinder 4215 having a small hole 4215a instead of the outer isolation net cylinder 4115 of Example 17 above. (Isolation member) is used. The outer isolation mesh cylinder 4215 is integrally formed with support points 4215b made of hemispherical protrusions on the inner and outer surfaces of the intersections of the linear parts constituting the net, respectively, and the outer peripheral surface and the outer side of the inner noble metal body 4114 are formed. Each inner peripheral surface of the member is supported by point contact. Also in this case, as shown in FIGS. 60C and 60D, a sufficient gap for flowing water is formed between the support points 4215b of the outer isolation net tube 4215, and the water entering the sterilization unit 4210 is not It can be confirmed that it flows smoothly.

Example 19: Another Example of Outer Isolation Net Tube and Upper and Lower Isolation Net Plates As shown in FIG. 61, the sterilization unit 4310 is a cylindrical net-like shape having a small hole 4116a instead of the outer isolation net cylinder 4115 of the above-described Example 17. An outer isolation net cylinder 4216 (isolation member) is used. The outer isolation mesh cylinder 4315 is integrally formed with support points 4315b made of hemispherical protrusions on the inner and outer surfaces of the intersections of the linear portions constituting the net, respectively, and the outer peripheral surface and the outer surface of the inner noble metal body 4114 are formed. Each inner peripheral surface of the member is supported by point contact. Further, the sterilization unit 4310 has an upper isolation net plate 4311 having a small hole 4311a and a lower isolation net having a small hole 4316a, respectively, instead of the upper isolation net tube 4111 and the lower isolation net plate 4116 of the seventeenth embodiment. A plate 4316 is used. The upper isolation mesh cylinder 4311 is integrally formed with support points 4311b made of hemispherical protrusions on the inner surface and outer surface of the intersecting portions of the linear portions constituting the net, respectively, and the upper base metal body 4112 and the noble metal body 4114 The end surfaces and the inner peripheral surfaces of the outer members are each supported by point contact. Similarly, the lower isolation mesh cylinder 4316 is integrally formed with support points 4316b made of hemispherical protrusions on the inner surface and the outer surface of the intersecting portions of the linear portions constituting the net, and the inner base metal body 4112 and the noble metal The lower end surface of the body 4114 and the inner peripheral surface of the outer member are each supported by point contact. Also in this case, as shown in FIGS. 61C and 61D, between the support points 4315b of the outer isolation net cylinder 4315, between the support points 4311b of the upper isolation net cylinder 4311, and the support points 4316b of the lower isolation net cylinder 4316. A sufficient gap for running water is formed between them, and it can be confirmed that water entering the sterilization unit 4310 flows very smoothly.

Example 20: Another Example of Outside Isolation Net Tube As shown in FIG. 62, the sterilization unit 4410 has a bottomed portion having a pair of small holes 4411a divided in the vertical direction instead of the outer isolation net cylinder 4115 of Example 17 above. An outer isolation net cylinder 4411 (isolation member) having a cylindrical net shape is used. The upper outer isolation mesh cylinder 4411 has a configuration in which the upper end opening of the upper half of the outer isolation mesh cylinder 4115 is closed by the upper isolation mesh plate 4111, and the lower outer isolation mesh cylinder 4411 is configured as the outer isolation mesh cylinder 4411. The lower end opening of the lower half of the cylinder 4115 is closed by the lower isolation screen 4116. Then, a pair of upper and lower outer isolation mesh cylinders 4411 are fitted to the outside from both the upper and lower directions of the cylindrical body composed of the base metal body 4112 and the noble metal body 4114 superimposed via the inner isolation mesh cylinder 4113, and their opposing end surfaces are arranged. Installed closely. Further, the outer isolation mesh cylinder 4411 is formed integrally with a support point 4411b made of a hemispherical protrusion on the inner surface of the intersection of the linear parts constituting the net, and the outer peripheral surface of the inner noble metal body 4114 and the inner members of the outer members. Each peripheral surface is supported by point contact. Also in this case, as shown in FIGS. 62 (c) and (d), a sufficient gap for running water is formed between the support points 4215b of the outer isolation net tube 4215, and the water entering the sterilization unit 4210 is not It can be confirmed that it flows smoothly. Further, the sterilization unit 4410 omits the upper and lower isolation mesh plates and covers the outside of the noble metal body 4114 with a pair of upper and lower bottom cylindrical isolation mesh tubes 4411, so that the assembly becomes very simple.

Operation Principle of Water Environment Battery Here, the operation principle of a water environment battery (a structure that exhibits a battery reaction in the water environment) as a main part constituting the water sterilization apparatus of the present invention will be briefly described. In a water-based environment battery, when a cylindrical base metal body made of zinc magnesium alloy and a cylindrical noble metal body made of stainless steel (SUS304) are immersed in water and spaced apart, the noble metal body is an anode (positive electrode) using water as a medium. The base metal body functions as a cathode (negative electrode), and a current flows between the noble metal body and the base metal body. Such a current becomes a so-called corrosion current for the base metal body, and zinc and magnesium which are constituent elements of the base metal body are dissolved and released into water. That is, as shown in FIG. 63 (a), when a noble metal body made of a stainless steel tube and a base metal body made of a ZnMg alloy column are arranged separately (as a single body) in water, two types of ionization tendency in water are different. A battery is formed using water as a medium by a combination of metals, and the formed negative electrode metal (base metal body) having a high ionization tendency is eluted into water as a metal ion by the formed battery action. On the other hand, as shown in FIG. 63 (b), when the base metal body is coaxially fitted and overlapped with the noble metal body via an isolation mesh cylinder (interval holding member) made of a cylindrical electrical insulator. Similarly, a battery is formed using water as a medium by a combination of two kinds of metals having different ionization tendencies in water, and a negative ion metal (base metal body) metal having a large reaction tendency due to the formed battery action. Elutes in water as metal ions.

Bactericidal effect confirmation test 1
As shown in FIG. 64, in order to confirm the sterilizing effect of the sterilizing apparatus of the present invention, first to third test bodies (circled numbers 1 to 3 in FIG. 64) are prepared, A bactericidal test was carried out to confirm the bactericidal effect. The first specimen (circled number 1 in FIG. 64) is a single columnar zinc pillar made of zinc in water (fresh water) in which general bacteria in the beaker are cultured. Soaked. A second test specimen (circled number 2 in FIG. 64) is a cylindrical stainless steel tube made of a simple substance of the zinc pillar and stainless steel (SUS304) in water (fresh water) in which general bacteria in a beaker are cultured. Are separately placed on the bottom surface of the beaker and spaced apart from each other. The third specimen (circled number 3 in FIG. 64) was placed on the bottom of the beaker in combination with the zinc pillar and the stainless steel tube in water (fresh water) in which general bacteria in the beaker were cultured. Soaked. At this time, the zinc columns are arranged inside and the stainless steel cylinders are arranged outside, and they are arranged coaxially, and between the zinc pillars and the inner peripheral surface of the stainless steel cylinders, predetermined contact is made so that they are not in direct contact with each other. A gap was provided. The size of the zinc pillar was 10 mm in diameter and 15 mm in length, and a stainless steel cylinder made of SUS304 with a diameter of 13 mm and a length of 15 mm was used. In addition, 500 cc of test water (well water) of 700 CFU / ml of general bacteria was taken in a beaker, and each specimen 1 to 3 was immersed in the test water for 30 minutes, and then the number of viable bacteria in the test water in each beaker was measured.

As a result, as shown in FIG. 64, in the first specimen, the viable count of general bacteria increased from 700 FU / ml to 6600 FU / ml, and the zinc pillar alone could not be sterilized. It was confirmed that the bacteria propagated in reverse. In the second specimen, the viable count of general bacteria is greatly reduced from 700 FU / ml to 43 FU / ml, and a battery reaction is realized by a combination of different metals (base metal and noble metal) in water. The point and the point by which a metal ion (Zn ion) eluted from a base metal by this, and the point which exhibits a bactericidal effect were confirmed. Furthermore, in the third test specimen, the number of viable bacteria was further reduced from 700 FU / ml to 13 FU / ml compared to test specimen 2, and different metals were spaced coaxially. It was confirmed that the disinfection effect was further improved by the arrangement. That is, as these test results show, when zinc pillars are immersed in water (fresh water) in which general bacteria are cultured alone, general bacteria increase, while zinc pillars are in water (fresh water) in which general bacteria are cultured. It was confirmed that general bacteria decreased when the stainless steel tube was immersed. In particular, since the number of viable cells in the third test specimen is smaller than that in the second test specimen, the zinc pillar and the stainless steel cylinder are compared with the case where the zinc pillar simple substance and the stainless steel cylinder are arranged with a space therebetween. It was confirmed that the combination of the stainless steel cylinder and the sterilization effect was superior.

Bactericidal effect confirmation test 2
As shown in FIG. 65, 4th to 6th test bodies (circled numbers 1 to 3 in FIG. 65) were prepared, and the bactericidal effect test of specimens with general bacteria was performed to confirm the bactericidal effect. . The fourth specimen (circled number 4 in FIG. 65) is a single columnar ZnMg alloy column made of zinc magnesium alloy in water (fresh water) in which general bacteria in the beaker are cultured. It is placed and immersed. The fifth specimen (circled number 5 in FIG. 65) is a stainless steel cylinder used in the above-mentioned ZnMg alloy column alone and in the bactericidal effect confirmation test 1 in water (fresh water) in which general bacteria in a beaker are cultured. Are separately placed on the bottom surface of the beaker and spaced apart from each other. The sixth specimen (circled number 6 in FIG. 65) is placed on the bottom of the beaker by combining the ZnMg alloy column and the stainless steel tube in water (fresh water) in which general bacteria in the beaker are cultured. And soaked. At this time, with the ZnMg alloy column on the inside and the stainless steel tube on the outside, they are arranged coaxially, and between the ZnMg alloy column and the inner peripheral surface of the stainless steel tube, so that they do not contact directly, A predetermined gap was provided. The size of the ZnMg alloy column was 10 mm in diameter and 15 mm in length, and the content of magnesium (Mg) was very small (3%) (Zn: Mg = 97: 3). In addition, 500 cc of test water (well water) of 700 CFU / ml of general bacteria was taken in a beaker, and each specimen 1 to 3 was immersed in the test water for 30 minutes, and then the number of viable bacteria in the test water in each beaker was measured.

As a result, as shown in FIG. 65, in all of the fourth to sixth test specimens, the viable count of general bacteria is greatly reduced from 700 FU / ml to below the detection lower limit of 10 FU / ml. It was confirmed. This is considered to be due to the bactericidal effect of magnesium added in a small amount (3%) to zinc. As shown by these test results, it was confirmed that any of the fourth to sixth specimens can exhibit an excellent bactericidal effect.

Next, as shown in FIG. 66, the metal constituting the noble metal body of the sterilization unit of the present invention is selected from various metals (single metal and alloy) to exert a battery action in water. In order to select a metal that functions as a positive electrode (positive electrode for water environment battery action) and is appropriate for maintaining the water quality, a selection test for precious metals was conducted, and turbidity (turbidity) of water for various metals. Clarity such as chromaticity and occurrence of rust was visually inspected, and the metal odor (golden odor) of water was confirmed by a sensory test based on olfaction. First, first to fourth specimens (circled numbers 1 to 4 in FIG. 66) were prepared for the precious metal selection test, and the clarity and metal odor of water were compared and confirmed. For these first to fourth specimens, iron (Fe), copper (Cu), stainless steel, and titanium (Ti) processed into a cylindrical shape were used as the positive electrode side (noble metal body) of the electrode. Also, on the negative electrode side (base metal body) of the electrode, a zinc-magnesium alloy mainly composed of zinc (97% zinc, 3% magnesium alloy) that has good corrosion resistance and can be used permanently is processed into a cylindrical shape. We used what we did. Such a ZnMg alloy column has a zinc dissolution of about 10 micrometers per year in soft water, and the inventor separately performs a function as a base metal body (elution effect of metal ions) for a very long time. It is confirmed by the dissolution test. The negative electrode-side ZnMg column has a diameter that can be accommodated coaxially (with a predetermined gap space) in the tube of the cylindrical noble metal body on the positive electrode side (from the inner diameter of the cylindrical noble metal body). What was processed into a predetermined dimension (small diameter) was used. Specifically, as the first test body, a sample in which a ZnMg alloy column was housed in an Fe cylinder was used. Moreover, as a 2nd test body, what put the ZnMg alloy pillar inside a Cu cylinder was used. Moreover, as a 3rd test body, what equipped the ZnMg alloy pillar inside the stainless steel cylinder was used. Moreover, as a 4th test body, what equipped the ZnMg alloy pillar inside the titanium cylinder was used. On the other hand, as a test method, 500 cc of a saturated solution of saline is taken in a beaker, each of the first to third specimens is immersed in the saline for 24 hours, the clarity is visually inspected, and the odor is removed. confirmed.

As a result, in the first test body (circled number 1 in FIG. 65), zinc and iron rust are precipitated and the chromaticity of the water is increased (the water is colored). It was confirmed that there was an odor. Next, in the second test specimen (circled number 2 in FIG. 65), the test water turns blue and the chromaticity of the water increases (the water is colored). It was confirmed that there was an odor. Next, in the third specimen (circled number 3 in FIG. 65), magnesium oxide and zinc oxide are generated at the lower end surface of the ZnMg alloy column in contact with the bottom surface of the beaker, and the same portion turns black. It was confirmed that the finger was stained black by touching the same part with the finger. Similarly, in the fourth specimen (circled number 4 in FIG. 65), magnesium oxide and zinc oxide are generated at the lower end surface of the ZnMg alloy column that is in contact with the bottom surface of the beaker. It was confirmed that the color was changed to black, and that the finger was stained black by touching the same part with the finger. For this reason, in the case of the test body 3 and the test body 4, it was confirmed that the black magnesium oxide and zinc oxide of the lower end surface of a ZnMg alloy column elute a little in water, and water gets dirty a little. From the test results of the first and second test bodies, iron (Fe) and copper (Cu) as the noble metal bodies have low suitability in terms of water quality and metal odor (especially the clarity of drinking water and the like). And it is not suitable for applications where water quality is required. On the other hand, from the test results of the third and fourth test bodies, stainless steel and titanium can be used as noble metal bodies, as long as the generation of magnesium oxide and zinc oxide in the base metal bodies can be suppressed. It was confirmed that the applicability was very high (particularly suitable for applications requiring clarity and water quality such as drinking water).

Discoloration confirmation test 1 to 4 depending on the combination form
Next, in response to the test result of the above-described proper test of the noble metal body, the base metal and the noble metal effective for suppressing the generation of magnesium oxide and zinc oxide (discoloration or blackening of the surface of the base metal body) in the base metal body. Various combinations were prepared, a discoloration confirmation test was performed for each combination, and the results were confirmed. Specifically, as shown in FIGS. 67 to 70, first to fourth specimens are prepared as a first combination form of a base metal and a noble metal, and the color change (black discoloration) in beaker water is compared. confirmed. First, in the first test body shown in FIG. 67, a zinc magnesium (ZnMg) alloy pipe is disposed on the outside as a base metal body, and a stainless steel column is coaxially disposed on the inside as a noble metal body. An interval holding member similar to that described above was interposed therebetween. Then, a resin-made interval holding member covering the entire surface of the beaker is placed on the bottom surface of the beaker, and the first test body is placed on the interval holding member on the bottom surface of the beaker to culture general bacteria in the beaker. The sample was immersed in fresh water (fresh water), and after a certain period of time, the contamination of the test water in the beaker was visually verified. As a result, as shown in FIG. 67, it was confirmed that the entire outer peripheral surface of the ZnMg alloy pipe turned black and the test water in the beaker was soiled.

Next, the second test body shown in FIG. 68 has a ZnMg alloy pipe as a base metal body on the inside and a stainless steel pipe as a noble metal body on the outside coaxially, and the above-mentioned between the ZnMg alloy pipe and the stainless pipe. It was assumed that a spacing member similar to that of the above was interposed. Then, a resin-made spacing member that covers the entire surface of the beaker is placed on the bottom surface of the beaker, and the second specimen is placed on the spacing member on the bottom surface of the beaker to culture general bacteria in the beaker. The sample was immersed in fresh water (fresh water), and after a certain period of time, the contamination of the test water in the beaker was visually verified. As a result, as shown in FIG. 68, it was confirmed that the entire inner peripheral surface of the ZnMg alloy pipe turned black and the test water in the beaker was soiled.

Next, a third test body shown in FIG. 69 has a ZnMg alloy column as a base metal body inside and a stainless steel pipe as a noble metal body coaxially arranged outside, and the above-mentioned between the ZnMg alloy column and the stainless pipe. It was assumed that a spacing member similar to that of the above was interposed. Then, a resin-made interval holding member that covers the entire surface of the beaker is placed on the bottom surface of the beaker, and the third specimen is placed on the interval holding member on the bottom surface of the beaker to culture general bacteria in the beaker. The sample was immersed in fresh water (fresh water), and after a certain period of time, the contamination of the test water in the beaker was visually verified. As a result, as shown in FIG. 69, it is confirmed that neither the surface of the ZnMg alloy column nor the stainless pipe is discolored, there is no contamination of the sample water, and the chromaticity is very good (maintains transparency). It was done. Furthermore, it was confirmed that the surface of the ZnMg alloy column itself (outer peripheral surface and upper and lower end surfaces) was not discolored at all.

Next, in the fourth test body shown in FIG. 70, a ZnMg alloy column is disposed on the inside as a base metal body, and a titanium pipe is disposed coaxially on the outside as a noble metal body, and the above-mentioned between the ZnMg alloy column and the titanium pipe. It was assumed that a spacing member similar to that of the above was interposed. Then, a resin-made spacing holding member covering the entire surface of the beaker is placed on the bottom surface of the beaker, and the fourth test specimen is placed on the spacing holding member on the bottom surface of the beaker to culture general bacteria in the beaker. The sample was immersed in fresh water (fresh water), and after a certain period of time, the contamination of the test water in the beaker was visually verified. As a result, as shown in FIG. 70, it is confirmed that neither the surface of the ZnMg alloy column nor the titanium pipe is discolored, there is no contamination of the test water, and the chromaticity is very good (maintains transparency). It was done. Furthermore, it was confirmed that the surface of the ZnMg alloy column itself (outer peripheral surface and upper and lower end surfaces) was not discolored at all.

From the test results of the discoloration confirmation tests 1 to 4, in the case of a sterilization unit composed of a combination of a ZnMg alloy column and a stainless steel pipe or a titanium pipe, the cylindrical ZnMg alloy is far away from the surface of the stainless steel pipe or the titanium pipe. Surface, that is, the surface opposite to the surface facing the stainless steel pipe or titanium pipe that weakens the battery reaction (the inner peripheral surface of the ZnMg alloy tube when the stainless steel pipe is arranged on the outer peripheral surface side, the stainless steel pipe, etc. On the outer peripheral surface of the ZnMg alloy tube when arranged on the inner peripheral surface side, the water environment battery action with the stainless steel pipe or the like that is the positive electrode is completely hindered, and the magnesium forming the zinc-magnesium alloy Without being ionized, it is simply oxidatively corroded to become magnesium oxide, and the magnesium oxide causes the ZnMg alloy tube It is believed that the entire surface is blackened. In other words, this magnesium oxide has a higher ionization tendency in magnesium and zinc, and magnesium becomes a negative electrode with respect to zinc. Therefore, a local battery is formed between magnesium and zinc, and a corrosion current is generated. It seems to be magnesium oxide as a reaction product produced by corrosion of magnesium used as the negative electrode. In short, from the test results of the above-mentioned discoloration confirmation tests 1 and 2, the reason for the blackening of the surface of the ZnMg alloy cylinder is that Mg at the weak battery reaction cannot be eluted as ions and covers the surface in the form of magnesium oxide. It can be judged that. Therefore, in the present invention, based on the above battery reaction, as shown in the discoloration confirmation tests 3 to 4, the ZnMg alloy cylinder serving as a negative electrode is changed to a ZnMg alloy column, and a spacing member is interposed therebetween to form a positive electrode. Placed and held inside a stainless steel pipe or the like. And when verification of the uniform electrolysis performance was performed as described above, a trace amount of metal residue in the beaker water was not detected, and the ZnMg alloy became complete Zn ions and Mg ions in the saturated solution of saline in the beaker. It was verified that the product was eluted.

On the other hand, from the test results of the sterilization effect confirmation tests 1 and 2, the base metal body (zinc column) made of only zinc has a weak sterilization effect, and the addition of a small amount of magnesium to zinc significantly improves the sterilization effect of the base metal body. However, since the surface of the base metal body made of zinc-magnesium alloy opposite to the surface facing the noble metal body turns black, the water becomes black and turbid as it is, and the black discoloration takes place in terms of water quality. It turns out that there is a need to deter it. Also, the upper end surface of the ZnMg alloy pipe of the first test body, the upper end surface of the ZnMg alloy pipe of the second test body, the upper end surface of the ZnMg alloy column of the third test body, and the ZnMg alloy column of the fourth test body Since the upper end surface of each of these is not discolored black, even if the surface is not opposite to the surface of the stainless steel pipe on the positive electrode side, the surface is adjacent to the surface of the stainless steel pipe, etc. Unless the surface is opposite to the opposing surface, the battery action between the lower end surface and the surface of the stainless steel pipe, which is a noble metal body, is not completely hindered, and magnesium is ionized and eluted from the surface of the ZnMg alloy. Therefore, it is considered that the blackening of the surface is suppressed. Further, on the surface facing the surface of the stainless steel pipe or the like, as in the third and fourth specimens, magnesium is efficiently ionized and eluted from the surface of the ZnMg alloy, and the surface blackening is reliably suppressed. It is considered a thing. The lower end surface of the ZnMg alloy pipe of the first specimen, the lower end face of the ZnMg alloy pipe of the second specimen, the lower end face of the ZnMg alloy pillar of the third specimen, and the ZnMg alloy pillar of the fourth specimen. None of the lower end surfaces of the black color is changed to black, but this is because a resin spacing member is placed on the bottom surface of the beaker and a ZnMg alloy cylinder or ZnMg alloy column is placed on the spacing member. A gap space having a thickness corresponding to the spacing member is formed between the bottom surface of the beaker and the bottom surface of the beaker without being in surface contact with the bottom surface of the beaker. It is considered that the battery action between the two is not completely hindered, and magnesium is ionized and eluted from the surface of the ZnMg alloy, thereby suppressing the blackening of the surface.

Focusing on the above, the present inventors made the ZnMg alloy column as the base metal body in the innermost position as in the above embodiment, so that there is no part far apart from the surface of the noble metal body as the ZnMg alloy column. In addition, when the ZnMg alloy is formed into a cylindrical shape, a noble metal body is disposed inside and outside of the ZnMg alloy so that there is no part that is far away from the surface of the noble metal body. In the present invention, the metal used for the positive and negative electrodes is selected so that the strongest bactericidal effect can be obtained when the positive and negative electrodes are combined, and the metal is long-term (permanent). It is selected to be a metal that can withstand use and conforms to water quality standards such as the Waterworks Law (because normal drinking water must be a metal that can maintain and secure the water quality standards of the Waterworks Law). In addition to the metal ion concentration, the water quality standard values of the Water Supply Law include taste, smell, chromaticity, and turbidity as regulated items, and the treated water quality must conform to those regulated values. The selection of this must be fully considered. Furthermore, when positive and negative bipolar metals are combined in water (between dissimilar metals), the metal on the negative electrode side is released into the water as metal ions by the action of the bipolar battery, but the positive / negative bipolar battery reaction. Does not necessarily work at a constant force, for example, if there is a place where the positive and negative bipolar electrodes are extremely close, a strong local battery is generated and reacts violently, and local corrosion occurs on the negative electrode side To do. Moreover, if a water flow is added there, cavity corrosion will generate | occur | produce and a raw material will be eroded spirally. On the other hand, corrosion also starts at a location far from the positive electrode where the battery reaction is weak, depending on conditions such as the metal used and water quality. When a metal is corroded, in most cases, the metal is not dissolved as an ion but is dispersed in water in the form of particles or powder, the water becomes cloudy, and the taste, smell, and chromaticity deteriorate. Therefore, it is important to select the metal to be used between the positive and negative electrodes, but more than that, it is possible to effectively apply the battery reaction by maintaining a uniform interval that does not generate local batteries between the positive and negative electrodes. The biggest condition is to do. For this reason, in this invention, as mentioned above, the gap | interval space | interval between a base metal body and a noble metal body is made into uniform thickness over the whole by the space | interval holding member. In particular, the ZnMg alloy as a base metal body is surely isolated from other metal bodies and electrically insulated, and is in surface contact with other members (not to mention metals, including electrical insulators such as resin and glass). In order to prevent this, the entire outside of the base metal body or the noble metal body is completely covered with the isolation member, and at least the contact with the base metal body is a line contact or a point contact.

Bactericidal ability confirmation test using the input water sterilizer As the water sterilizer of the present invention, a sterilization ability confirmation test using the input water sterilizer was performed. As the input-type water sterilizer, those shown in FIGS. 71 and 72 were prepared. This water sterilization apparatus has an upper case portion 4101 having a hemispherical top portion of a cylindrical portion and a lower case portion 4102 having a hemispherical bottom portion of the cylindrical portion, integrated with the upper peripheral edge of the lower case portion 4102. A capsule-like case 4100 connected to each other is formed by the formed connecting pieces 4103. Further, the upper case portion 4101 has a slit 4101a extending therethrough from the upper end to the vicinity of the lower end along the axial direction. The slits 4101 a are arranged at regular intervals in the circumferential direction of the upper case portion 4101. Similarly, the lower case portion 4102 has a slit 4201a extending from the lower end to the vicinity of the upper end along the axial direction. The slits 4201 a are arranged at regular intervals in the circumferential direction of the lower case portion 4102. The water sterilization apparatus accommodates and disposes the sterilization unit 4110 in a case 4100 including an upper case portion 4101 and a lower case portion 4102 that are connected to each other. The sterilization unit 4110 is similar to the above embodiment in that the base metal body 4112 as the first reactant is contained in the noble metal body 4114 as the second reactant via the inner isolation net cylinder 4113 as the spacing member. It is accommodated and arranged so as to be coaxially overlapped on the circumferential side. Case 4100 is formed of an electrically insulating material such as a resin material, and constitutes an outer isolation member that isolates base metal body 4112 and noble metal body 4114 of the sterilization unit from external members. The base metal body 4112 was a cylindrical body made of a zinc-magnesium alloy having a zinc ratio of 95% or more (less than 5% magnesium). The base metal body 4112 has a height of about 21 mm and a diameter of the upper surface and the lower surface of about 8 mm. Therefore, the area of the outer peripheral surface of the base metal body 4112 is 21 mm × 8πmm = 168πmm ² (circular ratio is π). The area of the upper surface and the lower surface of the base metal body 4112 is 16πmm ² . Therefore, the surface area of the base metal body 4112 is 168πmm ² + 16πmm ² × 2 = 200πmm ² .

[Sample 1 to 3]
Using the above water sterilizer as a specimen, antibacterial activity tests against various bacteria were conducted. The test was commissioned to the Japan Food Analysis Center and conducted as test number 2080441306-001. In this test, the specimen 1 was a noble metal body made of stainless steel, and the specimen 2 was a noble metal body made of a titanium cylinder. In addition, a sample 3 was prepared by previously immersing the surface of the sample 2 in a saturated aqueous solution of saline to remove the surface oxide film. After inoculating the bacterial solution in water in which Sample 1, Sample 2 and Sample 3 are soaked for 24 hours (hereinafter referred to as “test solution”), the sample is stored at room temperature with shaking. The viable cell count of the test solution was measured 6 hours later, 24 hours later, etc. In addition, a preliminary test was performed in advance to examine a method for measuring the number of viable bacteria.

[Test bacteria]
The test bacteria in the above test were as follows.
1) Escherichia coli NBRC 3972 (Escherichia coli)
2) Escherichia coli ATCC 43895 (E. coli, serotype O157: H7, verotoxin I and type II producing strain)
3) Klebsiella pneumoniae NBRC 13277 (Klebsiella pneumoniae)
4) Legionella pneumophila GIFU 9134 (Legionella)
5) Pseudomonas aeruginosa NBRC 13275 (Pseudomonas aeruginosa)
6) Salmonella enterica subsp. enterica NBRC 3313 (Salmonella)
7) Staphylococcus aureus subsp. aureus NBRC 12732 (Staphylococcus aureus)
8) Staphylococcus aureus IID 1677 (methicillin-resistant Staphylococcus aureus; MRSA)

[Bacteria count medium and culture conditions]
The following conditions were used for test bacteria 1) to 3) and 5) to 8).
The SCDLP agar medium (Nippon Pharmaceutical Co., Ltd.), the pour plate culture method, 35 ° C. ± 1 ° C., 2 days, test bacteria 4) were subjected to the following conditions.
B-CYEα agar medium (Eiken Chemical Co., Ltd.), plate smear culture method, 35 ° C ± 1 ° C, 7 days

[Preparation of bacterial solution]
Test bacteria 1) to 3) and 5) to 8) were adjusted as follows.
The test strain is cultured on a normal agar medium (Eiken Chemical Co., Ltd.) at 35 ° C. ± 1 ° C. for 18-24 hours, then suspended in purified water and prepared so that the number of bacteria is about 10 ⁷ / ml. Liquid.
About test microbe 4), it adjusted as follows.
After culturing at 35 ° C. ± 1 ° C. for 3 days on the test strain B-CYEα agar medium, culturing again on B-CYEα agar medium at 35 ° C. ± 1 ° C. for 2 to 3 days, suspending the cells in purified water, The number was adjusted to about 10 ⁷ / ml and used as a bacterial solution.

[Preparation of sample solution]
Each of Sample 1, Sample 2, and Sample 3 was immersed in a saturated sodium chloride solution overnight, washed with water, immediately added to 100 ml of purified water, and stored at room temperature for 24 hours as a sample solution.

[Test operation]
As a test operation, 1 ml of the bacterial solution was inoculated into the sample solution to prepare a test solution. Shake and store at room temperature. Test bacteria 1) are stored for 30 minutes, 6 hours, 24 hours, 1 week, 2 weeks, 3 weeks and 4 weeks, except for test bacteria 1) After 30 minutes of storage, and 6 hours and 24 hours later, it was immediately diluted 10 times with the test solution SCDLP medium (Nippon Pharmaceutical Co., Ltd.). The viable count of this diluted solution was measured using a culture medium for the count of bacteria. In addition, it tested similarly using purified water as a control. However, the viable count was also measured at the start.

[Test results]
As a result, as shown in the table of FIG. 73, no viable bacteria were detected in all samples (samples 1 to 3) in the measurement within 24 hours. On the other hand, in the control sample, viable bacteria were detected in the measurement after 24 hours. Thereby, the bactericidal effect of the sample of the specimen could be confirmed. In addition, as shown in FIG. 74, it was confirmed that for the test bacteria 1), bacterial growth was prevented over a long period of time after 1 week, 2 weeks, 3 weeks, and 4 weeks.

Sterilization ability confirmation test by water sterilizer for various containers As the water sterilizer of the present invention, the adapter for PET bottles of the above-described sixth embodiment (FIGS. 18 to 21) and the seventh embodiment (FIGS. 22 to 25) are used. ) And a sterilizing ability confirmation test were conducted using a plastic tank adapter. The test was commissioned to the Gifu Prefectural Public Health Inspection Center and conducted as test numbers 08Y00123 and 08Y00124. The test method was as follows.

[(1) Preparation of bacterial solution for inoculation]
Test bacteria: Bacteria: Escherichia coli NBRC (Escherichia coli)
Pre-culture of the test bacteria: One strain of a stock agar plate was inoculated into a normal agar slant medium and cultured at 37 ± 1 ° C. for 18-24 hours.

[(2) Preparation of bacteria-added test solution]
The test bacteria of (1) were prepared using physiological saline so as to be about 100,000,000 (10 ⁸ ) / ml. This was added at a rate of 1 ml per liter of sterile distilled water to prepare a test solution.

[(3) Setting to sample]
The test solution of (2) was injected into a plastic tank (polycontainer) equipped with a polytank adapter so as to be 10 L so that the plastic bottle equipped with the plastic bottle adapter was filled with 500 ml. Further, as a control, the test solution was also filled in a 500 ml sterilized container so as to be filled with water. The metal part having antibacterial effect was immersed in saturated saline solution the day before and diluted with sterilized water before use.

[(4) Save]
The sample containing the sample solution of (3) was stored at 25 ° C., and the number of coliforms on the first day and the seventh day was determined.

[(5) Measurement of the number of coliforms]
A dilution series was prepared by a 10-fold dilution method. 1 ml was taken from each dilution series test tube into two petri dishes, and 15 ml of desoxycholate agar medium was added to the petri dish. After the medium solidified, it was overlaid with about 5 ml of desoxycholate agar medium. After the medium had solidified, it was cultured at 37 ± 1.0 ° C. for 19 ± 1 hour, and the number of colonies in the petri dish of dilution series in which 30 to 300 colonies appeared was counted.

[Test results]
As shown in FIG. 75, it can be said that the PET bottle has a bactericidal effect because the number of coliforms was 1% or less on both the first and seventh days compared to the control. On the other hand, the number of coliforms decreased on the first day compared with the control on the first day, but since the number of coliforms was not less than 1%, it could not be determined that it had a bactericidal effect. On the 7th day, since this is satisfied, it can be said that it has a bactericidal effect.

Sterilizing ability confirmation test using single lever faucet water sterilizer Single lever faucet equipped with the single lever faucet spout adapter of Embodiment 3 (FIGS. 8 to 10) as the water sterilizer of the present invention Was used as a specimen (test product) to conduct a bactericidal ability confirmation test. The test was commissioned to the Gifu Prefectural Public Health Inspection Center and conducted as test number 07Y0199. The test method was as follows.

[(1) Medium]
Ordinary agar medium: Nippon Pharmaceutical Co., Ltd. Corrtag EL-10: Eiken Chemical Co., Ltd.

[(2) Preparation of bacterial solution for inoculation]
Test bacteria: Bacteria: Escherichia coli NBRC 3972 (Escherichia coli)
Pre-culture of the test bacteria: One platinum loop was inoculated from the stored bacteria into a normal agar slant medium and cultured at 35 ± 1 ° C. for 16-24 hours. Further, one platinum loop was inoculated from this culture to a new ordinary agar slant medium and cultured at 35 ± 1 ° C. for 16 to 20 hours.
Preparation of inoculum for bacterial solution: prepared by loopful inoculated into purified water from precultured test bacteria, about 10 ² cells / ml with purified water (approximately 10 ^3/100 ml), inoculate this Bacterial fluid was used.

[(3) Inoculation of test product]
The bacterial solution prepared in (2) was inoculated into a test product so as to be filled with water, and left at room temperature (20 ° C.) for 1 day. As a control, the bacterial solution prepared in (2) was left at room temperature (20 ° C.) for 1 day.

[(4) Bacterial count measurement]
The number of bacteria was measured by the method for quantifying Escherichia coli attached to Kensui 0330006 (H190.3.30).

[(5) Result]
The results are shown in FIG. As a result, it can be said that the number of E. coli after 24 hours from the single lever hydrant has decreased.

Test of water quality in well water and water purifier Next, for general bacteria and Escherichia coli in well water and purified water discharged from the water purifier, for well water, water for single lever faucet of the first embodiment (FIGS. 1 to 4). A single lever faucet equipped with a removal adapter is used as a specimen (test article) to conduct a sterilization ability confirmation test. As for the water purifier, the water purifier equipped with the water purifier adapter of the fifth embodiment is used as a specimen (test article). Was used as a sterilization ability confirmation test. In addition, as the water draining adapter, there were used three types of the diameter of the fluency adjusting hole of the flow rate adjusting plate: 3 mm, 4 mm and 5 mm. The test was commissioned to the Gifu Prefectural Public Health Inspection Center, and was carried out as test numbers 07011872, 080022434, 0800225 and 0801164. The test method was as follows.

As shown in FIG. 77, in the original drinking well water collected from the well for testing, the number of bacteria that did not conform to the water quality standard was confirmed. Similarly, as shown in FIG. 78, in the initial purified water collected from the water purifier for the test, the number of bacteria incompatible with the water quality standard was confirmed.

On the other hand, it was confirmed that the purified water from the water purifier equipped with the water purifier adapter conforms to the water quality standard as shown in FIG. Similarly, as shown in FIG. 80, it was confirmed that the well water from the single lever faucet equipped with the drain adapter (hole diameter 3 mm) complies with the water quality standard. Similarly, it was confirmed that well water from a single lever faucet equipped with a drainage adapter (hole diameter: 4 mm) also complies with water quality standards as shown in FIG. Similarly, it was confirmed that well water from a single lever faucet equipped with a drainage adapter (hole diameter 5 mm) also complies with water quality standards as shown in FIG.

As described above, the water sterilization apparatus of the present invention is a device that is arranged to allow water to pass through water pipes, faucets, pipe parts, etc., water purifiers, water purifiers, water purifiers, etc. Equipment that can be placed in water, equipment that can be placed in water such as sprinklers and sprinklers, equipment that is placed in drinking water storage such as PET bottles and plastic tanks, and tubs and various water tanks (drinking water It can be embodied and applied as an apparatus for immersing in stored water (other than) and various water sterilizers immersed in natural water such as rivers and lakes.

Claims (17)

A first reactant comprising a first metal having a predetermined ionization tendency and exhibiting a bactericidal effect by metal ionization in water;
A second metal comprising a second metal having a lower ionization tendency than the first metal, and having a facing surface disposed to face the entire main portion of the metal ion generation surface on the surface of the first reactant. The reactants of
The first and second reactants face each other so as to be in non-contact with each other over the entire surface and at least with a small gap space that is uniform over the entire length direction. A spacing member made of an electrical insulator that is fixedly held with each other in a state of being arranged to
The first reactant and the second reactant are mediated by water that has entered the gap space between the first reactant and the second reactant by passing water or being immersed in water. The metal ions of the first reactant are eluted in water from the first reactant toward the second reactant due to the difference in ionization tendency between the two, thereby providing a sterilizing function to the water Water sterilizer characterized by the above. The first reactant is composed of a magnesium magnesium alloy containing magnesium,
The second reactant is made of stainless steel,
The second reactant has a predetermined cross-sectional shape having a predetermined diameter with at least a main portion having the same cross-sectional shape in the axial direction, and has a communication space that is formed in a hollow cylindrical shape and extends in the axial direction.
The first reactant has a predetermined cross-sectional shape in which at least a main part has an outer diameter smaller than the inner diameter of the second reactant and has the same cross-sectional shape in the axial direction, and the whole is a solid columnar shape. Formed and coaxially disposed in the communication space of the second reactant,
The spacing member is interposed between the first reactant and the second in a state where the first reactant is coaxially disposed in a communication space of the second reactant. In addition, the outer peripheral surface side is in contact with the inner peripheral surface of the second reactant over the whole in a dotted or linear manner, and the inner peripheral surface of the cylindrical portion is entirely pointed with the outer peripheral surface of the first reactant. The first reactant and the second reactant are brought into non-contact with each other over the entire surface in contact with each other in a linear or linear manner, and at least a uniform small interval over the entire length of their main parts The water sterilizer according to claim 1, wherein the water sterilizer is fixedly held in a state where the gap spaces are arranged so as to face each other. The spacing member is made of an electrically insulating resin material and has an inside having a net-like cylindrical portion having a uniform thickness corresponding to the overall shape of the gap space between the first reactant and the second reactant. An isolation net cylinder, and the inner peripheral surface side of the cylindrical portion is in contact with the outer peripheral surface of the first reactant in the form of dots or lines, and the outer peripheral surface side of the cylindrical portion is the second A uniform space between the first reactant and the second reactant is formed and held in contact with the inner peripheral surface of the reactant in a dotted or linear manner. The water sterilizer according to claim 2. The first reactant comprises a base metal body having a columnar shape with a predetermined diameter made of a zinc magnesium alloy to which magnesium is added or a base metal body having a cylindrical shape with a predetermined diameter made of a zinc magnesium alloy to which magnesium is added,
When the first reactant has a columnar shape having a predetermined diameter, the second reactant has a cylindrical shape made of stainless steel having an inner diameter larger than the outer diameter of the columnar base metal body. It consists of a noble metal body that is coaxially fitted to the outer peripheral side. On the other hand, when the first reactant has a cylindrical shape with a predetermined diameter, the outer diameter is smaller than the inner diameter of the cylindrical base metal body. An inner noble metal body arranged coaxially on the inner peripheral side of the base metal body and a stainless steel having an inner diameter larger than the outer diameter of the cylindrical base metal body. Made of an outer noble metal body arranged coaxially on the outer peripheral side of the base metal body,
The spacing member has an inner diameter corresponding to the outer diameter of the columnar base metal body and an outer diameter corresponding to the inner diameter of the noble metal body when the first reactant has a columnar shape with a predetermined diameter. Forming a cylindrical shape that is interposed and disposed over the entire gap space between the base metal body and the noble metal body, uniformly forming a large number of small holes over the entire surface, and on the inner peripheral surface side, A plurality of linear portions that linearly contact and support the outer peripheral surface of the base metal body or dot-shaped portions that contact and support the outer peripheral surface of the base metal body in a dotted manner are provided so that the base metal body and the noble metal body In a state of being in contact with each other and in a state of being arranged so as to face each other with a uniform small gap space across the entire surface,
When the first reactant has a cylindrical shape with a predetermined diameter, the spacing member has an outer diameter corresponding to the inner diameter of the cylindrical base metal body and an inner diameter corresponding to the outer diameter of the inner noble metal body. A cylindrical inner space holding member disposed and disposed over the entire gap space between the base metal body and the inner noble metal body, an inner diameter corresponding to the outer diameter of the base metal body, and the outer side An outer diameter corresponding to the inner diameter of the noble metal body, and a cylindrical outer spacing holding member disposed across the entire gap space between the base metal body and the outer noble metal body,
The inner space holding member uniformly forms a large number of small holes over the entire surface thereof, and on the inner peripheral surface side thereof, the linear portion that linearly contacts and supports the inner peripheral surface of the cylindrical base metal body or the Provided with a plurality of point-like portions that contact and support the outer peripheral surface of the cylindrical base metal body in a dot-like manner, and also points to the linear portion that linearly contacts and supports the outer peripheral surface of the inner noble metal body or the outer peripheral surface of the inner noble metal body The cylindrical base metal body and the inner noble metal body are placed in a non-contact state over the entire surface, and a uniform inner space is provided at small intervals over the entire surface. In a state where they face each other and are fixedly held together,
The outer space holding member uniformly forms a large number of small holes over the entire surface, and linearly supports the outer peripheral surface of the cylindrical base metal body in a linear manner or the outer peripheral surface of the cylindrical base metal body A plurality of point-like portions that contact and support the outer noble metal body in a point-like manner, and a point that linearly contacts and supports the inner peripheral surface of the outer noble metal body or the inner peripheral surface of the outer noble metal body in a point-like manner The cylindrical base metal body and the outer noble metal body face each other so as to be in a non-contact state over the entire surface and with a uniform small gap between the outer clearance spaces over the entire surface. The water sterilizer according to claim 1, wherein the water sterilizer is fixedly held in a state of being arranged. The first reactant is composed of a base metal body having a cylindrical shape with a predetermined diameter made of a magnesium magnesium alloy containing magnesium,
The second reactant has a cylindrical shape made of stainless steel having an inner diameter larger than the outer diameter of the base metal body, and is made of a noble metal body that is coaxially fitted and arranged on the outer peripheral side of the base metal body,
The spacing member has an inner diameter corresponding to the outer diameter of the base metal body and an outer diameter corresponding to the inner diameter of the noble metal body, and is interposed over the entire gap space between the base metal body and the noble metal body. A linear portion that forms a cylindrical shape and uniformly forms a large number of small holes over the entire surface thereof, and on the inner peripheral surface side thereof linearly supports the outer peripheral surface of the base metal body or the base metal. A plurality of point-like portions for supporting the outer peripheral surface of the body in a point-like manner are provided so that the base metal body and the noble metal body are in a non-contact state with each other over the entire surface, and a uniform small gap space is formed over the entire surface. The water sterilizer according to claim 1, wherein the water sterilizer is fixedly held in a state of being placed so as to face each other. Furthermore, an isolation member made of an electrically insulating material that covers the entire outer peripheral surface of the noble metal body and the entire upper and lower end surfaces of the base metal body and the upper and lower end surfaces of the noble metal body and separates them from opposing members,
The isolation member uniformly forms a large number of small holes over the entire surface, and on the inner surface thereof, the entire outer peripheral surface of the noble metal body and the entire upper and lower end surfaces of the base metal body and the noble metal body are respectively linear. A plurality of dot-like portions that contact and support the linear portions that contact and support the entire outer peripheral surface of the noble metal body and the entire upper and lower end surfaces of the base metal body and the noble metal body, respectively. The entire surface of the outer peripheral surface and the entire upper and lower end surfaces of the base metal body and the noble metal body are in a non-contact state with respect to the facing member, and face the facing member with a uniform small gap space. The water sterilizer according to claim 5, wherein the water sterilizer is isolated so as to face the water. Further, the isolation member is further formed in a linear shape that linearly contacts and supports the entire surface of the opposing member on the outer surface side facing the surface of the opposing member, or the entire surface of the opposing member is dotted. 6. The water sterilization apparatus according to claim 5, wherein a plurality of dot-like portions to be contact-supported are provided to form a uniform small space between the opposing surfaces. The first reactant comprises a base metal body having a cylindrical shape with a predetermined diameter made of a magnesium magnesium alloy containing magnesium,
The second reactant has a cylindrical shape made of stainless steel having an outer diameter smaller than the inner diameter of the base metal body, and is arranged with an inner noble metal body coaxially fitted and arranged on the inner peripheral side of the base metal body; A cylindrical shape made of stainless steel having an inner diameter larger than the outer diameter of the base metal body, and an outer noble metal body arranged coaxially on the outer peripheral side of the base metal body,
The spacing member has an outer diameter corresponding to an inner diameter of the base metal body and an inner diameter corresponding to an outer diameter of the inner noble metal body, and covers the entire gap space between the base metal body and the inner noble metal body. A cylindrical inner spacing member disposed between the base metal body, an inner diameter corresponding to the outer diameter of the base metal body, and an outer diameter corresponding to the inner diameter of the outer noble metal body, the base metal body and the outer side It consists of a cylindrical outer space holding member that is arranged to be interposed over the entire gap space between the noble metal body,
The inner space holding member uniformly forms a large number of small holes over the entire surface thereof, and on the inner peripheral surface side thereof, a linear portion that linearly contacts and supports the inner peripheral surface of the base metal body or the base metal body Provided with a plurality of point-like portions that contact and support the outer peripheral surface in a point-like manner, and a point that linearly contacts and supports the outer peripheral surface of the inner-side noble metal member or the outer peripheral surface of the inner noble metal body in a point-like manner. The base metal body and the inner noble metal body are arranged so as to be in non-contact with each other over the entire surface, and to face each other with a uniform small gap between the entire surface. Hold each other in a fixed state,
The outer space holding member uniformly forms a large number of small holes over the entire surface thereof, and also linearly supports the outer peripheral surface of the base metal body in a linear contact manner or supports the outer peripheral surface of the base metal body in a dotted manner. A plurality of point-like portions to be provided, and a plurality of point-like portions to linearly contact and support the inner peripheral surface of the outer noble metal body or a plurality of point-like portions to contact and support the inner peripheral surface of the outer noble metal body. The base metal body and the outer noble metal body are fixed to each other in a state in which they are in a non-contact state over the entire surface, and are arranged so as to face each other with a uniform small gap on the entire surface. The water sterilizer according to claim 1, wherein the sterilizer is for water. Furthermore, it is made of a zinc-magnesium alloy containing magnesium, and is arranged coaxially on the inner peripheral side of the inner noble metal body, and has an inner base metal body having a cylindrical shape with an outer diameter smaller than the inner diameter of the inner noble metal body. The water sterilizer according to claim 8. The inner noble metal body and the outer noble metal body are formed by spirally circulating a slit-like noble metal body formed by penetrating a plurality of through slits extending along the axial direction at predetermined intervals in the circumferential direction, or a linear body. The water sterilizer according to claim 9, wherein the water sterilizer is made of a spiral ring-shaped noble metal body having a cylindrical shape as a whole. And further comprising an isolation member made of an electrically insulating material that covers the entire outer peripheral surface of the outer noble metal body and the inner and upper noble metal bodies, and the upper and lower end surfaces of the outer noble metal body and isolates them from opposing members.
The isolation member uniformly forms a large number of small holes over the entire surface, and on the inner surface side, the entire outer peripheral surface of the outer noble metal body and the upper and lower sides of the inner noble metal body, the base metal body, and the outer noble metal body. A linear portion for linearly contacting and supporting the entire surface of both end surfaces, or the entire outer peripheral surface of the outer noble metal body, and the entire upper and lower end surfaces of the inner noble metal body, the base metal body, and the outer noble metal body are dotted. A plurality of dot-like portions that contact and support the outer precious metal body, and the entire inner peripheral surface of the outer noble metal body and the whole upper and lower end faces of the inner noble metal body, the base metal body, and the outer noble metal body are not opposed to the opposing member. 11. The water sterilizer according to claim 10, wherein the water sterilizer is isolated so as to be in a contact state and to be opposed to a facing member with a gap space of a uniform small interval. . Further, the isolation member is further formed in a linear shape that linearly contacts and supports the entire surface of the opposing member on the outer surface side facing the surface of the opposing member, or the entire surface of the opposing member is dotted. 12. The water sterilizer according to claim 11, wherein a plurality of dot-like portions to be contact-supported are provided so as to form a uniform small gap space between the opposing surfaces. 13. The water sterilizer according to claim 1, wherein the base metal body zinc magnesium alloy contains magnesium in a proportion of 3 to 8%. The water sterilizer is provided adjacent to a pipe having a water passage extending in the axial direction, and includes a cylindrical housing in which a water passage hole communicating with the water passage of the pipe is formed on the pipe side,
The housing is capable of accommodating the first reactant and the second reactant, which are coaxially fitted and disposed via the spacing member, and can accommodate the first reactant accommodated therein. A flow rate adjustment plate having a flow rate adjustment hole having a smaller diameter than the water flow hole is interposed between the reactant and the second reactant and the water flow hole, and the hole diameter of the flow rate adjustment hole of the flow rate adjustment plate. By adjusting the increase / decrease, the water flows into the gap space between the first reactant and the second reactant from the water passage of the pipe via the water passage hole, and the first reactant and The water sterilizer according to claim 3, wherein the amount of water returned to the gap space between the second reactant and returned from the water passage hole to the water passage of the pipe is increased or decreased. The sterilizer for water is disposed in the middle of a pipe having a water passage extending in the axial direction, and has an internal water passage arranged coaxially with the water passage, and the pipe is connected to the internal water passage. A housing having a water passage hole communicating with the water passage so as to be coaxial,
The housing is capable of accommodating the first reactant and the second reactant that are coaxially fitted and arranged via the spacing member so as to be coaxial with the water passage of the pipe. And a flow rate adjusting plate having a flow rate adjusting hole having a smaller diameter than the water flow hole is interposed between the first and second reactants contained therein and the water flow hole. When the diameter of the flow rate adjustment hole of the flow rate adjustment plate is increased or decreased, the water flow hole is provided on the upstream side of the internal water flow path with respect to the first reactant and the second reactant. Adjusts the amount of water flowing into the gap space between the first reactant and the second reactant from the water passage of the pipe, and the water passage hole is used for the first reactant and the first reactant. When the second reactant is provided downstream of the internal water passage, the first reactant Fine the water sterilizing apparatus of claim 3, wherein the gap space increasing or decreasing adjusting the amount of water flowing into the water passage of the pipe between the second reactant. The first reactant is made of a zinc-magnesium alloy containing magnesium, and a base metal body having a columnar shape with a chrysanthemum shape in which a plurality of concave grooves extending along the axial direction are formed at predetermined intervals in the circumferential direction of the cylindrical body. Consists of
The second reactant has a cylindrical shape made of stainless steel having an inner diameter larger than the outer diameter of the base metal body, and is made of a noble metal body that is coaxially fitted and arranged on the outer peripheral side of the base metal body,
The spacing member has an inner diameter corresponding to the outer diameter of the base metal body and an outer diameter corresponding to the inner diameter of the noble metal body, and is interposed over the entire gap space between the base metal body and the noble metal body. A linear portion that forms a cylindrical shape and uniformly forms a large number of small holes over the entire surface thereof, and on the inner peripheral surface side thereof linearly supports the outer peripheral surface of the base metal body or the base metal. A plurality of point-like portions for supporting the outer peripheral surface of the body in a point-like manner are provided so that the base metal body and the noble metal body are in a non-contact state with each other over the entire surface, and a uniform small gap space is formed over the entire surface. The water sterilizer according to claim 1, wherein the water sterilizer is fixedly held in a state of being placed so as to face each other. The first reactant is composed of a base metal body having a cylindrical shape with a predetermined diameter made of a magnesium magnesium alloy containing magnesium,
The second reactant is made of stainless steel, has an inner diameter larger than the outer diameter of the base metal body, and bends at a predetermined interval in the circumferential direction on each of the inner peripheral surface side and the outer peripheral surface side. A cylindrical shape of a cross-shaped chrysanthemum formed with a plurality of concave grooves extending along the axial direction, consisting of a noble metal body that is coaxially fitted and arranged on the outer peripheral side of the base metal body,
The spacing member has an inner diameter corresponding to the outer diameter of the base metal body and an outer diameter corresponding to the inner diameter of the noble metal body, and is interposed over the entire gap space between the base metal body and the noble metal body. A linear portion that forms a cylindrical shape and uniformly forms a large number of small holes over the entire surface thereof, and on the inner peripheral surface side thereof linearly supports the outer peripheral surface of the base metal body or the base metal. A plurality of point-like portions for supporting the outer peripheral surface of the body in a point-like manner are provided so that the base metal body and the noble metal body are in a non-contact state with each other over the entire surface, and a uniform small gap space is formed over the entire surface. The water sterilizer according to claim 1, wherein the water sterilizer is fixedly held in a state of being placed so as to face each other.

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