JP2011218343A - Nozzle for gas-liquid mixing, gas-liquid mixing mechanism and application of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas-liquid mixing nozzle capable of dispersing gas from the mixture of gas and liquid as fine air bubbles efficiently with a simple structure.SOLUTION: A gas-liquid mixing mechanism 2 for the gas-liquid mixing nozzle, comprising a circulating pipe 1 having an introducing port 11 of gas-liquid mixed fluid and an exhausting port 12 and a gas-liquid mixing mechanism 2 which is fitted airtightly/liquid-tightly in the circulation tube, includes: an inner part introducing port 21a introducing gas-liquid mixed fluid; an agitating mixing means agitating and mixing the gas-liquid mixed fluid; a gas-liquid agitating and mixing part 21 having an exhaust port exhausting agitated and mixed fluid; a flow rate adjusting part 22a regulating the flow rate of the fluid; and a gas-liquid mixture preparation part 22 having a pressure change part 22b continuously changing the pressure of the fluid whose flow rate is regulated, and making the gas in the gas-liquid mixed fluid as a gas-liquid mixture with fine air bubbles dispersed in the liquid.

Description

  The present invention relates to a nozzle for gas-liquid mixing. More specifically, the present invention relates to a gas-liquid mixing nozzle that has a very simple configuration and is easy to mold. The present invention further relates to a gas-liquid mixing mechanism that constitutes a gas-liquid mixing nozzle. Furthermore, the present invention relates to the use of such a gas-liquid mixing nozzle.

  Microbubbles, which are referred to as microbubbles, refer to a state in which bubbles with a diameter of 50 μm or less are generated in water. If there are several thousand microbubbles with a diameter of about 10 μm or less in water or the like per ml, like milk Becomes cloudy.

When such fine bubbles are generated, the following characteristics are generated (Non-patent Document 1).
Ascending speed Normal bubbles rapidly rise in the water and eventually rupture at the liquid level. However, since the fine bubbles have a fine bubble volume, the ascending speed is slow, and the fine bubbles continue to stay in the aqueous liquid. For example, a bubble with a diameter of 10 μm rises only about 3 mm per minute.

  Self-pressurizing effect The interface is formed between two phases, a gas phase and a liquid phase, a liquid phase and a liquid phase, a liquid phase and a solid phase, and a solid phase and a solid phase. Pressure is generated between the interfaces due to the interfacial tension. This interfacial tension is derived by the Young Laplace equation, and the pressure applied to the bubbles increases in inverse proportion to the size of the bubbles. For this reason, the fine bubbles are further reduced by the pressure, and the pressure is further increased. Theoretically, infinite pressure occurs. Further, the gas is effectively dissolved in water by the pressurizing effect.

  Surface potential characteristics Microbubbles have a colloidal side and are negatively charged. For this reason, fine bubbles repel each other. Because of this property, there is no bonding between fine bubbles, and the bubble concentration does not decrease.

  Self-crushing By the self-crushing action of fine bubbles, water and nitrogen are decomposed and radicals are generated. Regarding the generation mechanism, there are various theories and it has not yet been settled.

  As what produces | generates the bubble liquid containing such a fine bubble, there exists a thing of the following patent documents 1 or 2, for example.

Patent Document 1 relates to a bubble refiner for further miniaturizing bubbles in a bubble liquid, and relates to the proposal of the present applicant.
This bubble micronizer refines the bubble liquid generated by mixing the gas with the liquid by the suction pressure of the pressure pump using another bubble micronizer, and further refines the bubbles contained in this bubble liquid. Is to do.

  This bubble micronizer forms a partition wall with a plurality of liquid inflow holes on the upstream side in the liquid feeding direction, and is arranged coaxially in the outer cylinder body that is open on the downstream side in the liquid feeding direction, A large-diameter portion having a constant cross-sectional area over a predetermined range along the liquid feeding direction, and a reduced-diameter portion whose cross-sectional area gradually decreases from the upstream side toward the downstream side on the downstream side of the upstream bubble liquid passage. A shaft body is provided, and a bubble liquid path is formed between the outer cylinder body and the shaft body.

  In order to refine the bubbles in the bubble liquid with this bubble refiner, the bubble liquid pumped by the pressure pump is caused to flow into the outer cylinder from the liquid inflow hole and pass through the bubble liquid path. At this time, the bubble liquid is caused to flow into the outer cylinder through the liquid inflow hole in a state where the pressure on the bubble liquid is increased by the partition wall of the outer cylinder, and thereafter, the interval is gradually increased from the upstream side toward the downstream side in the liquid feeding direction. The bubbles in the bubble liquid are destroyed and refined by utilizing the fact that the pressure on the bubble liquid is changed by passing through the expanding bubble liquid path.

On the other hand, the invention described in Patent Document 2 is a fine bubble generating device that uses a swirling flow to generate a bubble liquid containing fine bubbles.
This micro-bubble generator has a gas introduction hole on the closed side of a cylindrical container with one end closed, and a pressurized liquid introduction port in the tangential direction on a part of the cylindrical inner wall circumferential surface. It is supposed to be.

  This fine bubble generating device forms a negative pressure portion in the vicinity of the central axis of the cylinder by pumping the pressurized liquid into the cylinder from the pressurized liquid introduction port during use and generating a swirling flow therein. By this negative pressure, gas is sucked into the cylinder from the gas introduction hole, and the gas passes on the central axis having the lowest pressure, thereby forming a thin swirl gas vortex. In this cylinder, a swirl flow is formed from the pressurized liquid inlet to the opening side, and along with this swirl, centrifugal force acts on the liquid and centripetal force acts on the gas simultaneously due to the difference in specific gravity between the liquid and gas. Thus, in a state where the liquid part and the gas part are separated, the gas is jetted on the opening side, and at the same time as the jetting, the swirl is suddenly weakened by the surrounding still liquid, and a sudden swirling speed difference occurs. The swirling gas vortex is cut by the swirling speed difference, and as a result, a large amount of fine bubbles are generated and discharged from the opening side.

  Further, in Patent Document 3, for the purpose of providing a bubble micronizer capable of efficiently generating a large amount of fine bubbles, one end on the upstream side is closed and a discharge port is provided on the other end on the downstream side. In the generated cylinder, the bubble liquid is ejected obliquely from the outside of the cylinder through the wall of the cylinder to the inner wall circumferential surface along a virtual line parallel to a virtual tangent line drawn on the inner wall circumferential surface. Establishing a main injection port and a secondary injection port for injecting the bubble liquid by being displaced so as to approach the axis of the generation cylinder with respect to the injection direction from the main injection port, in the generation cylinder, While creating a main swirling flow by the bubble liquid ejected from the main injection port, fine bubbles are formed by crossing alternating current with the main swirling flow made by the bubble liquid ejected from the sub injection port. Disclosed is a bubble micronizer characterized by generating There.

  Non-Patent Document 1 exemplifies a microbubble generator using a swirl flow, a venturi type microbubble generator, an aura jet type microbubble generator, a cavitation type microbubble generating nozzle, and an OHR line mixer. We are comparing the occurrence status.

Cited references

  JP 2007-144421 A   JP 2006-116365 A   JP 2009-273992 A   JP 2009-72664 A   JP 2008-006365 A

  Microbubbles and their performance (Akinawa Akira, Toshihiko Yahiro) Annual Meeting of the Japan Multiphase Flow Society 2001 (2nd) Proceedings, 2001)

  However, the nozzles for generating fine bubbles according to the prior art have a complicated nozzle configuration, are difficult to clean when clogged, and are expensive.

  Further, the nozzle for generating fine bubbles according to the prior art has a drawback that a sufficient effect is not generated unless a mixture of gas and liquid is introduced at a considerably high pressure (high flow rate).

  Therefore, the subject of this invention is providing the gas-liquid mixing nozzle which can disperse | distribute gas as a fine bubble efficiently from the mixture of gas and liquid with a simple structure. It is another object of the present invention to provide a gas-liquid mixing mechanism that is mounted on a flow pipe and constitutes such a gas-liquid mixing nozzle.

The object of the present invention is achieved by the following items.
(1) A gas-liquid mixing nozzle comprising a flow pipe having a gas-liquid mixed fluid inlet and outlet, and a gas-liquid mixing mechanism fitted in the gas pipe in an air-tight and liquid-tight manner. ,
The gas-liquid mixing mechanism is
(A) an internal introduction port for introducing a gas-liquid mixed fluid from the gas introduction port, an agitation and mixing means for stirring and mixing the gas-liquid mixed fluid introduced from the introduction port, and a discharge port for discharging the agitated and mixed fluid Having a gas-liquid stirring and mixing unit;
(B) a flow rate adjusting unit that regulates the flow rate of the fluid from the gas-liquid stirring and mixing unit, and a pressure changing unit that continuously changes the pressure of the fluid whose flow rate is regulated, and the gas in the gas-liquid mixed fluid A gas-liquid mixture preparation unit which is a gas-liquid mixture dispersed as fine bubbles in a liquid;
A gas-liquid mixing nozzle comprising:

(2) The gas-liquid mixing nozzle according to 1, wherein the gas-liquid stirring and mixing unit (A) stirs and mixes the gas-liquid mixed fluid introduced by the inner wall surface, the reflecting member, or both.

(3) The introduction port of the flow pipe and the internal introduction port of the gas-liquid stirring and mixing unit are arranged at positions shifted from the center of the gas-liquid stirring and mixing unit. Liquid mixing nozzle.

(4) The introduction port of the flow pipe has a configuration in which a gas-liquid mixed fluid is allowed to flow at a predetermined angle through an internal introduction port of the gas-liquid stirring and mixing unit. The nozzle for gas-liquid mixing of any one of 3.

(5) The gas-liquid mixture preparation section (B) is composed of a rod-shaped body integrally formed with the gas-liquid stirring and mixing section (A) and an inner wall surface of the flow pipe. The nozzle for gas-liquid mixing of any one of 3.

(6) The flow rate adjustment unit has a predetermined cross-sectional area provided on the surface of the rod-shaped body, and is configured by at least one flow path provided horizontally along the longitudinal axis direction. The nozzle for gas-liquid mixing of 5.

(7) The gas-liquid mixing nozzle according to (5) or (6), wherein the pressure changing portion is configured such that the height in the longitudinal axis direction changes continuously.

(8) The gas / liquid according to any one of 1 to 7, wherein a plurality of the gas / liquid mixing mechanism or the gas / liquid mixture preparing unit (B) are provided on an inner wall surface of the flow pipe. Nozzle for mixing.

(9) The gas-liquid mixing mechanism includes a fitting portion having a gas-liquid mixing portion in an inside thereof fitted to an inner diameter of the flow pipe having a penetrating internal introduction port and a gas-liquid mixing stirring portion therein. ,
A flow rate adjusting unit having an outer diameter smaller than an outer diameter of the fitting unit provided continuously with the fitting unit, a pressure changing unit provided continuously with the flow rate adjusting unit,
A gas-liquid mixing and stirring unit provided across the fitting unit and the flow rate adjusting unit;
Consisting of
Any one of 1 to 8, wherein the flow rate adjusting unit includes at least one through hole for taking in the mixed fluid mixed and stirred by the gas-liquid mixing and stirring unit in a circumferential direction of the flow rate adjusting unit. The gas-liquid mixing nozzle according to claim 1.

(10) The gas-liquid mixing according to any one of 1 to 9, further comprising a removing means for removing impurities on the upstream side of the gas-liquid mixed fluid inlet of the flow pipe. Nozzle.

(11) The gas-liquid mixing nozzle according to any one of 1 to 10, a gas-liquid mixture prepared by inserting the gas-liquid mixing nozzle in a liquid-tight manner, and the gas-liquid current nozzle A gas-liquid mixing unit comprising a pressure-resistant container having at least one discharge port for discharging a mixed fluid, and a rectifying mechanism provided in the pressure-resistant tank.

(12) A gas generating means, a pressure feeding means for mixing and pumping the gas and the liquid from the gas generating means, and a liquid mixed fluid from the pressure feeding means are introduced so that the gas exists as fine bubbles in the liquid. The gas-liquid mixing system comprised from the nozzle for gas-liquid mixing of any one of 1 to 11 which discharges the gas-liquid mixture to perform.

(13) A gas generating means, a pressure feeding means for mixing and pumping the gas and the liquid from the gas generating means, and a liquid mixed fluid from the pressure feeding means are introduced, and the gas is present as fine bubbles in the liquid. 13. A gas-liquid mixing system comprising the gas-liquid mixing unit according to 12, which discharges the gas-liquid mixture.

(14) The gas-liquid mixing system according to 12 or 13, wherein the liquid is selected from the group consisting of a pool, an underwater walking device, a bathing facility, and a footbath facility.

(15) The gas-liquid mixing system according to 14, wherein the gas is at least one gas selected from the group consisting of hydrogen, oxygen, and carbon dioxide.

(16) The gas-liquid mixing system according to 15, wherein the gas is a gas for sterilization in addition to at least one gas selected from the group consisting of hydrogen, oxygen, and carbon dioxide.

(17) The gas-liquid mixing system according to 15 or 16, wherein the gas is switched from a different gas supply source and pumped to a pumping means.

(18) The gas-liquid mixing system according to 12 or 13, wherein the liquid is a fuel liquid, and the gas is an auxiliary combustion gas.

(19) The gas-liquid mixing system according to 18, wherein the liquid is hydrogen, oxygen, ozone, lower hydrocarbon, or a mixture thereof.

(21) A gas-liquid mixing mechanism for gas-liquid mixing by gas-liquid mixing in a flow pipe having an inlet and an outlet for a gas-liquid mixed fluid.
(A) an internal introduction port for introducing a gas-liquid mixed fluid from the gas introduction port, an agitation and mixing means for stirring and mixing the gas-liquid mixed fluid introduced from the introduction port, and a discharge port for discharging the agitated and mixed fluid Having a gas-liquid stirring and mixing unit;
(B) a gas-liquid mixture preparation unit having a flow rate adjusting unit that regulates the flow rate of fluid from the gas-liquid stirring and mixing unit, and a pressure changing unit that continuously changes the pressure of the fluid whose flow rate is regulated,
A gas-liquid mixing mechanism comprising:

  The nozzle for gas-liquid mixing of this invention is comprised from the flow pipe and the gas-liquid mixing mechanism provided in the flow pipe. In this gas-liquid mixing mechanism, the gas-liquid mixed fluid stirring and mixing unit and the gas-liquid mixture preparing unit are integrally formed. The gas-liquid mixed fluid agitated and mixed in the gas-liquid mixed fluid agitating and mixing unit is adjusted in flow rate by the gas-liquid mixture preparing unit, and the gas component in the gas-liquid mixed fluid is microbubbled by the pressure change and dispersed in the liquid. A liquid mixture is obtained. With such a simple configuration, a gas-liquid mixture containing a gas as high-concentration fine bubbles can be continuously and stably prepared.

  In addition, such a gas-liquid mixing nozzle is a gas-liquid mixing unit configured alone or in combination with a pressure vessel, as a bathtub, bathing equipment represented by a hot spring facility, footbath equipment represented by a footbath unit, It can be applied to an underwater walking device, a pool, etc. and can be applied as a gas-liquid mixture generation system in which gas is mixed with liquid as fine bubbles.

  Further, such a gas-liquid mixing nozzle is used as a gas-liquid mixing unit configured alone or in combination with a pressure resistant container, as a gas for supporting combustion in heavy oil, light oil, gasoline, for example, oxygen, hydrogen, ozone, lower It is possible to provide a fuel in which hydrocarbons are finely dispersed.

  Schematic of the gas-liquid mixing nozzle concerning 1st embodiment of this invention.   The schematic of the nozzle for gas-liquid mixing concerning 2nd embodiment of this invention.   The schematic of the nozzle for gas-liquid mixing concerning 3rd embodiment of this invention.   Schematic of the nozzle for gas-liquid mixing concerning 4th embodiment of this invention.   Schematic which shows the application example of the gas-liquid mixing nozzle of this invention.   The schematic of the nozzle for gas-liquid mixing concerning 5th embodiment of this invention.   Schematic of the gas-liquid mixing unit which accommodated the gas-liquid mixing nozzle of this invention in the gas-liquid mixing tank.   (A), (b) is schematic which shows the 1st application example of the gas-liquid mixing unit shown in FIG.   Schematic which shows the gas-liquid mixing part in the application example shown in FIG.   Schematic which shows the 1st application example of the nozzle for gas-liquid mixing of this invention.   Schematic which shows the 2nd application example of the gas-liquid mixing unit shown in FIG.   Schematic which shows the 2nd application example of the nozzle for gas-liquid mixing of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIGS. 1 to 4 are schematic views of gas-liquid mixing nozzles according to first to fourth embodiments of the present invention, respectively, and FIG. 5 is a schematic view showing an application example of the gas-liquid mixing nozzle of the present invention. It is.

  As shown in FIG. 1 to FIG. 4, the gas-liquid mixing nozzle of the present invention is fitted in a gas-liquid mixed fluid with a flow pipe 1 having a gas-liquid mixed fluid inlet and outlet, and inside the flow pipe 1. The gas-liquid mixing mechanism 2 is mainly configured.

  The inlet 11 provided in the flow pipe 1 may be arranged at a position perpendicular to the flow direction of the gas-liquid mixed fluid as shown in FIG. 1, and the gas-liquid mixed fluid as shown in FIG. It may be arranged in the horizontal direction with respect to the current flow. Further, as will be described later, in order to generate a swirling flow, it may be arranged shifted from the center position, or may be arranged so as to have a predetermined angle in the flow direction of the gas-liquid mixed fluid.

  The term “gas-liquid mixed fluid” used in this specification refers to a fluid in which a liquid such as water is mixed with air, oxygen, ozone, hydrogen, carbon dioxide, or the like. The gas-liquid mixture refers to a mixture in which the gas is dispersed in the form of fine bubbles in the liquid and is united. Furthermore, the flow pipe means a conduit for flowing a gas-liquid mixed fluid and discharging it as a gas-liquid mixture.

    The flow pipe 10 and the gas-liquid mixing mechanism 20 are made of a material well known in the art, for example, a material such as metal or plastic. As shown in FIGS. The flow tube 10 is fitted in an airtight and liquidtight manner.

  The gas-liquid mixing mechanism 2 is mainly composed of a gas-liquid stirring and mixing unit 21 and a gas-liquid mixture preparing unit 22. The gas-liquid stirring and mixing unit 21 has an internal introduction port 21a, stirring and mixing means for stirring and mixing the gas-liquid mixed fluid, and a discharge port 21b for discharging the stirred and mixed fluid. And the gas-liquid mixture preparation part 22 is mainly comprised from the flow volume adjustment part 22a and the pressure change part 22b which changes continuously the pressure of the fluid which carried out the flow control.

  The gas-liquid stirring and mixing unit 21 is for uniformly stirring and mixing the introduced gas-liquid mixed fluid. Therefore, in the embodiment shown in FIG. 1, the gas-liquid mixed fluid is stirred and mixed by the reflected flow by the inner wall surface of the gas-liquid stirring and mixing unit and the introduction flow introduced continuously. Further, in the embodiment shown in FIG. 2, the gas-liquid mixed fluid introduced continuously using the fluid reflecting member 22c and the reflected flow by the reflecting wall 22c and the inner wall surface of the gas-liquid stirring and mixing unit 22 are used. The liquid mixed fluid is stirred and mixed.

  In addition, although the reflection member 21c can also be provided along the inner wall surface of the gas-liquid stirring part 21 as shown in FIG. 2, it is not limited to this. For example, the same effect can be obtained by providing one or more reflecting members having a predetermined shape inside the gas-liquid mixing and stirring unit 21.

  Further, as shown in FIG. 4, a receiving portion 21d for receiving the gas-liquid mixed fluid introduced from the introduction port (11, 21a) is provided, and the gas-liquid mixing introduced continuously with the gas-liquid mixed fluid reflected from the receiving portion 21d. It is also possible to stir and mix with the fluid. Such a configuration is preferable when the gas-liquid mixed fluid inlet (11, 21a) is provided in the horizontal direction of the longitudinal axis of the flow pipe 1.

  The gas-liquid mixed fluid agitated and mixed in this way is continuously passed to the downstream flow rate adjusting unit 22a. Further, the gas-liquid mixed fluid inlet (11, 21a) is disposed at a position shifted from the center of the gas-liquid stirring and mixing unit 21, or the gas-liquid mixing fluid is introduced by introducing the gas-liquid mixed fluid at a predetermined angle. A swirling flow is generated in the mixing unit 21. In the latter case, this is achieved by providing a predetermined angle to the pipe for introducing the gas-liquid mixed fluid.

  The flow rate adjusting unit 22 a in the gas-liquid mixture preparing unit 22 is provided continuously with the gas-liquid mixing and stirring unit 21, and is provided linearly in the direction of the longitudinal-flow direction pipe discharge port 12 of the gas-liquid mixing mechanism 10. It is comprised from the groove | channel which was made. The number of the flow rate adjusting units 22a is appropriately determined according to the purpose, and is at least one, preferably about 1 to 8, more preferably about 1 to 4.

  This groove has a cross-sectional area smaller than the cross-sectional area of the gas-liquid mixing and stirring unit 21. The flow of the gas-liquid mixed fluid mixed and stirred by the gas-liquid mixing and stirring unit 21 is regulated by a groove linearly provided from the upstream side to the downstream side in the longitudinal axis direction of the flow rate adjusting unit 22a. The cross-sectional area smaller than that of the portion 21 flows from the upstream side to the downstream pressure changing portion 22b with a high fluid pressure.

  The length in the longitudinal axis direction and the cross-sectional area of each flow rate adjusting unit 22a at this time can be appropriately set according to the purpose and are not particularly limited.

  The pressure changing unit 22b provided on the downstream side of the flow rate adjusting unit 22a changes the pressure of the gas-liquid mixed fluid flowing at a predetermined pressure with the flow regulated by the flow rate adjusting unit 22. It has the effect of discharging gas as fine bubbles.

  Therefore, the pressure change part 22b of the gas-liquid mixing mechanism 20 has an inclination of a predetermined angle, for example. And by installing the gas-liquid mixing mechanism 20 on the flow tube 10, a space whose cross-sectional area continuously changes is formed. The gas-liquid mixed fluid flowing at a predetermined pressure whose flow is regulated by the flow rate adjusting unit 22a flows along the pressure changing unit 22b, and the pressure in the gas-liquid mixed fluid changes as the pressure continuously changes. Gas fine bubbles are generated. The generated fine bubbles are dispersed in the gas-liquid mixed fluid, and the gas-liquid mixture containing the fine bubbles at a high concentration is discharged from the discharge port 12.

  In this case, the pressure changing unit 22b is appropriately designed according to the number of the flow rate adjusting units 22a. That is, in the case where there is one flow rate adjusting unit 22a, for example, it is only necessary to have an inclination with which the cross-sectional area changes from at least one upstream side to the downstream side. Further, when there are two flow rate adjusting units 22a, for example, it is only necessary to have an inclination in which the cross-sectional area changes from the upstream side to the downstream side corresponding to at least two flow rate adjusting units 22a. Furthermore, for example, when there are a plurality of flow rate adjusting units 22a, it is possible to cope with this by providing, for example, a conical member.

  In this case, the inclination angle of the pressure changing portion 22b is not particularly limited as long as it is within a range that exhibits the object and effect of the present invention. According to the experiments by the present inventors, the inclination angle is preferably 15 degrees or more.

  At this time, the gas-liquid mixture preparation unit 22 of the present invention is preferably configured by integrally molding from a rod-shaped material, for example, a plastic material.

  Next, a gas-liquid mixing nozzle according to a fifth embodiment, which is the most preferred embodiment of the present invention, will be described with reference to FIG. In the embodiment shown in FIG. 6, members similar to those in the embodiment shown in FIGS. 1 to 5 are given the same reference numerals, and detailed description thereof is omitted. FIG. 6 is a drawing showing a configuration of a gas-liquid mixing nozzle according to a fifth embodiment.

  As shown in FIG. 6, the gas-liquid mixing nozzle according to the fifth embodiment includes a flow pipe 1 having an inlet 11 and an outlet 12, a penetrating internal inlet, and a gas-liquid mixing and stirring unit inside. The fitting part 20 having a gas-liquid mixing part inside which is fitted to the inner diameter of the flow pipe having the outer diameter is smaller than the outer diameter of the fitting part 20 provided continuously with the fitting part 20. Mainly from the flow rate adjusting unit 21a, the pressure changing unit 22b provided continuously with the flow rate adjusting unit, and the gas-liquid mixing and stirring unit 21 provided inside the fitting unit 20 and the flow rate adjusting unit 21a. The flow rate adjusting unit 22a is provided with at least one through hole 21a and 21b for taking in the mixed fluid mixed and stirred by the gas-liquid mixing and stirring unit. The fitting portion 20 is a member for providing a gas-liquid mixing and stirring portion 21 inside and introducing the gas-liquid mixing mechanism provided inside the flow tube 1 in a liquid-tight manner with the flow tube 1. Moreover, in this embodiment, the fitting part 20 is comprised by the uneven nipple, and the filter F is being fixed to the other surface. Thus, it is possible to remove impurities by arranging the filter F in the nozzle of the present invention.

  Further, in order to stabilize the flow rate adjusting unit 22a as desired, the flow rate adjusting unit 22a and the inner wall of the flow pipe 1 can be engaged by a fastener such as a boss (not shown).

  The gas-liquid mixing nozzle according to the fifth embodiment configured as described above allows the gas-liquid mixture introduced from the introduction port to flow from the fitting portion 20 to the gas-liquid mixing and stirring portion 21 as shown in FIG. . The flowing gas-liquid mixture collides with the wall provided on the flow rate adjusting part 21b side and is reflected and mixed and stirred.

  The gas-liquid mixture that has been sufficiently mixed and stirred is introduced into the flow rate adjusting unit 22a from the discharge ports 21a and 22b.

  The discharge ports 21a, 22b, and 22c are through holes provided in the circumferential direction of the flow rate adjusting unit 22a, and may be one, but it is preferable to provide a plurality at equal intervals. In this way, the flow rate of the gas-liquid mixture introduced into the flow rate adjusting unit 22a from the discharge ports 21a, 22b, and 22c is adjusted. In addition, the flow rate adjustment unit 22 a of the present embodiment is configured by a gap between a member having an outer diameter smaller than the fitting unit 20 and the inside of the flow pipe 1.

  According to the experiments by the present inventors, it is possible to prepare a gas-liquid mixture in which the gas is uniformly finely dispersed as fine bubbles as the inner diameter of the flow pipe 1 is larger and the length of the flow rate adjusting unit 22a is longer. It turns out that there is.

  The gas-liquid mixture whose flow rate has been adjusted by the flow rate adjusting unit 22a is then subjected to a rapid pressure change by the pressure changing unit 22b to become a gas-liquid mixture in which the gas is uniformly finely dispersed as fine bubbles, and the gas is uniformly fine from the discharge port 11. It is discharged as a gas-liquid mixture finely dispersed as bubbles. In the embodiment shown in FIG. 6, the introduction port 11 is disposed horizontally with respect to the longitudinal axis direction of the nozzle (flow pipe), but the present invention is not limited to the position of the introduction port 11. For example, the introduction port 11 can be arranged perpendicular to the longitudinal axis direction of the nozzle (flow pipe).

  Next, based on FIG. 7, the gas-liquid mixing unit U based on the nozzle for gas-liquid mixing of this invention is demonstrated.

  The gas-liquid mixing unit shown in FIG. 7 has a configuration in which the gas-liquid mixing nozzle shown in FIG. 6 is arranged, but the nozzle shown in FIGS. 1 to 4 may be applied.

  The gas-liquid mixing unit shown in FIG. 7 is a gas-liquid mixture for supplying at a constant flow rate after temporarily storing the gas-liquid mixture in which the gas prepared by the gas-liquid mixing unit of the present invention is finely dispersed as fine bubbles. The unit is composed of a gas-liquid mixing nozzle N and a pressure-resistant tank T. The pressure-resistant tank T is provided in the pressure-resistant tank T with an insertion port for inserting the gas-liquid mixing nozzle N in a liquid-tight manner, at least one discharge port T1 for discharging the gas-liquid mixed fluid prepared by the gas-liquid mixing nozzle. And a straightening mechanism T2. In the present embodiment, one end of the rectifying mechanism T2 is fixed to the nozzle, and the other end is formed of a cylindrical body that is opened via the rectifying unit T21 so as to introduce the gas-liquid mixed fluid into the nozzle. Further, the introduction port is arranged with its center slightly shifted in the direction perpendicular to the longitudinal axis of the pressure-resistant tank T.

  With this configuration, the gas-liquid mixed fluid introduced from the introduction port 11 becomes a swirl flow along the cylindrical rectification mechanism, and is introduced into the nozzle after hitting the rectification unit T21. The gas-liquid mixed fluid introduced into the nozzle is discharged from the discharge port 12 as a gas-liquid mixture in which gas is finely dispersed as fine bubbles, for example, as shown in FIG.

  With this configuration, it becomes possible to easily handle a gas-liquid mixed fluid in which the gas prepared by the gas-liquid mixing nozzle N of the present invention is finely dispersed as fine bubbles. For example, when used for a bathing application, which will be described later, it is possible to jet-jet a gas-liquid mixed fluid in which gas is finely dispersed as fine bubbles from two or more outlets.

  Next, based on FIG. 8 to FIG. 10, the gas-liquid mixing unit (FIG. 8) and the gas-liquid mixing nozzle (FIG. 10) of the present invention are applied to the body of a human or pet such as bathing, footbath, pool, underwater walking device. An example in which a gas-liquid mixed fluid in which gas is finely dispersed as fine bubbles will be described.

  Embodiment shown in FIG. 7 shows the example which applied the gas-liquid mixing unit U of this invention to the bathtub (the bathing device, the outdoor bath in a bathtub, a hot spring, etc., a footbath, an underwater walking apparatus). As shown in FIG. 7A, the gas-liquid mixing unit U of the present invention is disposed immediately before the water tank in the water (warm water) circulation flow path in the water tank WT via the pump P.

  Then, the gas from the gas supply source G is accompanied by warm water by the ejector action, and the gas-liquid mixed fluid in which the gas is finely dispersed as fine bubbles in the gas-liquid mixing unit U is jet-injected.

  At this time, it is preferable to mix hydrogen, oxygen, carbon dioxide, or the like with warm water as desired as a gas that has a positive effect on the body. As shown in FIG. 9, it is also possible to circulate a desired gas after circulating a gas-liquid mixed fluid (sterilizing fluid) mainly composed of ozone as a gas having a sterilizing action as desired. For example, when sterilizing with ozone, as shown in FIG. 9, oxygen concentrated by an oxygen concentrator using PSA or the like is supplied as ozone by an ozone generator, and when supplying oxygen thereafter, the ozone generator is bypassed. It is also possible to supply (or turn off the ozone generator). It is also possible to supply hydrogen and oxygen separately or mixed by electrolysis. Further, it is possible to supply gas from a gas supply source such as an oxygen cylinder, a hydrogen cylinder, or a carbon dioxide cylinder. In addition, as shown in FIG. 10, the present inventors previously applied, and it is also possible to use a mixture of hydrogen and hot water through a gas-liquid mixing section M enclosing a hydrogen generator released from PAL Corporation. Is within the range. Further, as shown in FIG. 8A, the gas-liquid mixture can be jet-injected by injecting the gas-liquid mixed fluid from the two discharge ports from the gas-liquid mixing unit U.

  In recent years, the effect of hydrogen water has attracted attention, but by using the gas-liquid mixing unit of the present invention, it is possible to easily apply hot water in which hydrogen is finely dispersed in bathing, footbaths, pools, underwater walking devices, etc. It becomes. It is also possible to provide a filter F in the liquid circulation channel as desired. Although not shown, it is also within the scope of the present invention to provide a filter F in the gas-liquid mixing unit of the present invention.

  Further, as shown in FIG. 8 (b), it is possible to prepare a gas-liquid mixed fluid in advance by the buffer tank WT and supply water to a necessary portion as desired. The present invention is used instead of the gas-liquid mixing unit U. It is also within the scope of the present invention to supply the gas-liquid mixed fluid directly from the gas-liquid mixing nozzle.

  Such bathing equipment, footbaths, underwater walking devices and the like equipped with the gas-liquid mixing unit or gas-liquid mixing nozzle of the present invention are novel. Therefore, the present invention is extended to bathing facilities, footbaths, and underwater walking devices provided with the gas-liquid mixing unit or gas-liquid mixing nozzle of the present invention.

  Next, an example in which the gas-liquid mixing unit (FIG. 11) or the gas-liquid mixing nozzle (FIG. 12) of the present invention is used for fuel reforming will be described with reference to FIGS.

  In the embodiment shown in FIG. 11, the fuel in the fuel tank FT is mixed with gas for auxiliary combustion (for example, oxygen, oxygen + ozone, hydrogen, hydrogen + oxygen, hydrocarbon gas) and the like, and the auxiliary combustion gas is mixed. An example of preparing a fuel finely dispersed as fine bubbles will be shown. In the embodiment shown in FIG. 12, the fuel is mixed with gas for auxiliary combustion (for example, oxygen, oxygen + ozone, hydrogen, hydrogen + oxygen, hydrocarbon gas), etc., and the auxiliary combustion gas is changed into fine bubbles. An example of on-site preparation of finely dispersed fuel is shown. In these mechanisms, the liquid used in the embodiments shown in FIGS. 8 to 10 is hot water, whereas the liquid used in the embodiments shown in FIGS. 11 and 12 is a fuel oil such as heavy oil, light oil, gasoline, or the like. Since it is the same except for this point, its detailed description is omitted.

  The embodiment shown in FIGS. 11 and 12 makes it possible to easily reform the fuel. Further, as in the embodiment shown in FIGS. 8 to 10, the fuel reforming mechanism provided with the gas-liquid mixing unit or gas-liquid mixing nozzle of the present invention is novel. Therefore, the present invention extends to a fuel reforming mechanism equipped with the gas-liquid mixing unit or gas-liquid mixing nozzle of the present invention.

  As described above, the gas-liquid mixing nozzle of the present invention includes the gas-liquid mixing and stirring unit for continuously stirring and mixing the gas-liquid mixed fluid from the inlet using the pressure from the inlet, A flow rate adjusting unit that adjusts the flow rate of the gas-liquid mixed fluid from the gas-liquid mixing and stirring unit, and a pressure changing unit that disperses the gas in the gas-liquid mixed fluid adjusted in flow rate by the flow rate adjusting unit as fine bubbles in the liquid. The gas component in the introduced gas-liquid mixture is stirred and mixed with a simple structure, and after adjusting the flow rate, a pressure change is generated by a pressure change unit having a predetermined angle, and the gas in the gas-liquid mixture is liquidated as fine bubbles. It is possible to disperse uniformly and with high efficiency. Therefore, it is possible to efficiently discharge a gas-liquid mixture in which fine gas bubbles at a high concentration are uniformly dispersed. Therefore, for example, using a mixed gas of water and air to purify water in ponds, oceans, etc. (exposed air from seawater farms, live fish tanks, live fish carriages, separation of SS and oil from seawater and wastewater, Uses ozone dissolved in wastewater, storms in wastewater treatment tanks with low SS, etc., and fine bubbles of hydrogen and carbon dioxide using a gas-liquid mixing device (see Fig. 4) previously developed by the present inventors It can be suitably used as a nozzle for a gas-liquid mixing device and a fine bubble generating device for various uses such as the production of a gas-liquid mixture.

  The gas-liquid mixing nozzle of the present invention thus configured can be configured by providing a plurality of gas-liquid mixing mechanisms or the gas-liquid mixture preparation section on the inner wall surface of the flow-through pipe, for example. Furthermore, it is also possible to provide a gas-liquid mixing mechanism for gas-liquid mixing by fitting in a gas-liquid mixed manner inside a flow pipe having a gas-liquid mixed fluid inlet and outlet.

  As described above, the gas-liquid mixing nozzle of the present invention includes the gas-liquid mixing and stirring unit for continuously stirring and mixing the gas-liquid mixed fluid from the inlet using the pressure from the inlet, A flow rate adjusting unit that adjusts the flow rate of the gas-liquid mixed fluid from the gas-liquid mixing and stirring unit, and a pressure changing unit that disperses the gas in the gas-liquid mixed fluid adjusted in flow rate by the flow rate adjusting unit as fine bubbles in the liquid. With a simple configuration, the gas components in the introduced gas-liquid mixture are stirred and mixed, and after adjusting the flow rate, a pressure change is generated by an inclined portion having a predetermined angle, so that the gas in the gas-liquid mixture becomes fine bubbles in the liquid. Can be dispersed uniformly and with high efficiency. Therefore, it is possible to efficiently discharge a gas-liquid mixture in which fine gas bubbles at a high concentration are uniformly dispersed. Therefore, for example, using a mixed gas of water and air to purify water in ponds, oceans, etc. (exposed air from seawater farms, live fish tanks, live fish carriages, separation of SS and oil from seawater and wastewater, Uses ozone dissolved in wastewater, storms in wastewater treatment tanks with low SS, etc., and fine bubbles of hydrogen and carbon dioxide using a gas-liquid mixing device (see Fig. 4) previously developed by the present inventors It can be suitably used as a nozzle for a gas-liquid mixing device and a fine bubble generating device for various uses such as the production of a gas-liquid mixture.

  In addition, such a gas-liquid mixing nozzle is a gas-liquid mixing unit configured by itself or in combination with a pressure vessel, bathing equipment represented by a bathtub, hot spring facility, and footbath represented by a footbath unit. It can be applied as a gas-liquid mixture generating system in which gas is mixed with liquid as fine bubbles by being mounted on equipment, an underwater walking device, a pool or the like.

  Further, such a gas-liquid mixing nozzle is used as a gas-liquid mixing unit configured alone or in combination with a pressure resistant container, as a gas for supporting combustion in heavy oil, light oil, gasoline, for example, oxygen, hydrogen, ozone, lower It is possible to provide a fuel in which hydrocarbons are finely dispersed.

DESCRIPTION OF SYMBOLS 10 Flow pipe 11 Inlet 12 Outlet 20 Gas-liquid mixing mechanism 21 Gas-liquid mixing stirring part 22 Gas-liquid mixture preparation part 22a Flow volume adjustment part 22b Pressure change part

Claims (20)

A gas-liquid mixing nozzle comprising a flow pipe having a gas-liquid mixed fluid inlet and outlet, and a gas-liquid mixing mechanism fitted in a gas-tight and liquid-tight manner inside the flow pipe,
The gas-liquid mixing mechanism is
(A) an internal introduction port for introducing a gas-liquid mixed fluid from the gas introduction port, an agitation and mixing means for stirring and mixing the gas-liquid mixed fluid introduced from the introduction port, and a discharge port for discharging the agitated and mixed fluid Having a gas-liquid stirring and mixing unit;
(B) a flow rate adjusting unit that regulates the flow rate of the fluid from the gas-liquid stirring and mixing unit, and a pressure changing unit that continuously changes the pressure of the fluid whose flow rate is regulated, and the gas in the gas-liquid mixed fluid A gas-liquid mixture preparation unit which is a gas-liquid mixture dispersed as fine bubbles in a liquid;
A gas-liquid mixing nozzle comprising:   2. The gas-liquid mixing nozzle according to claim 1, wherein the gas-liquid stirring and mixing unit (A) performs stirring and mixing of a gas-liquid mixed fluid introduced by an inner wall surface, a reflecting member, or both.   The inlet of the said flow pipe and the internal inlet of the said gas-liquid stirring mixing part are arrange | positioned in the position shifted | deviated from the center of the said gas-liquid stirring mixing part. Nozzle for liquid mixing.   The introduction port of the flow pipe has a configuration that allows a gas-liquid mixed fluid to flow at a predetermined angle through an internal introduction port of the gas-liquid stirring and mixing unit. Item 4. The gas-liquid mixing nozzle according to any one of items 3 to 4.   The said gas-liquid mixture preparation part (B) is comprised from the rod-shaped body integrally molded with the said gas-liquid stirring mixing part (A), and the inner wall face of the said flow pipe, The Claim 1 characterized by the above-mentioned. Item 4. The gas-liquid mixing nozzle according to any one of items 3 to 4.   The flow rate adjusting unit has a predetermined cross-sectional area provided on a surface of the rod-shaped body, and is configured by at least one flow path provided horizontally along a longitudinal axis direction. The nozzle for gas-liquid mixing of 5.   The gas-liquid mixing nozzle according to claim 5 or 6, wherein the pressure changing portion is configured such that the height in the longitudinal axis direction changes continuously.   The gas according to any one of claims 1 to 7, wherein a plurality of the gas-liquid mixing mechanism or the gas-liquid mixture preparation section (B) are provided on an inner wall surface of the flow pipe. Liquid mixing nozzle. The gas-liquid mixing mechanism includes a fitting portion having a gas-liquid mixing portion inside which is fitted to an inner diameter of the flow-through pipe having a penetrating internal introduction port and a gas-liquid mixing stirring portion inside.
A flow rate adjusting unit having an outer diameter smaller than an outer diameter of the fitting unit provided continuously with the fitting unit, a pressure changing unit provided continuously with the flow rate adjusting unit,
A gas-liquid mixing and stirring unit provided across the fitting unit and the flow rate adjusting unit;
Consisting of
The said flow volume adjustment part is equipped with the at least 1 through-hole for taking in the mixed fluid mixed and stirred by the said gas-liquid mixing stirring part in the circumferential direction of the said flow volume adjustment part. Item 9. The gas-liquid mixing nozzle according to any one of items 8 to 9.   The gas-liquid according to any one of claims 1 to 9, further comprising a removing means for removing impurities upstream of the gas-liquid mixed fluid inlet of the flow pipe. Nozzle for mixing.   The gas-liquid mixing nozzle according to any one of claims 1 to 10, an insertion port for inserting the gas-liquid mixing nozzle in a liquid-tight manner, and a gas prepared by the gas-liquid use nozzle. A gas-liquid mixing unit comprising a pressure-resistant container having at least one discharge port for discharging a liquid mixed fluid, and a rectifying mechanism provided in the pressure-resistant tank. Gas generating means;
A pumping means for mixing and pumping the gas and liquid from the gas generating means;
The gas-liquid mixing nozzle according to any one of claims 1 to 11, wherein the liquid-mixed fluid from the pumping means is introduced to discharge a gas-liquid mixture in which the gas exists as fine bubbles in the liquid. , A gas-liquid mixing system consisting of. Gas generating means;
A pumping means for mixing and pumping the gas and liquid from the gas generating means;
13. A gas-liquid mixing system comprising: a gas-liquid mixing unit according to claim 12, wherein the liquid-mixed fluid from the pressure feeding means is introduced to discharge a gas-liquid mixture in which the gas exists as fine bubbles in the liquid. .   The gas-liquid mixing system according to claim 12 or 13, wherein the liquid is selected from the group consisting of a pool, an underwater walking device, a bathing facility, and a footbath facility.   The gas-liquid mixing system according to claim 14, wherein the gas is at least one gas selected from the group consisting of hydrogen, oxygen, and carbon dioxide.   The gas-liquid mixing system according to claim 16, wherein the gas is a sterilizing gas in addition to at least one gas selected from the group consisting of hydrogen, oxygen, and carbon dioxide.   The gas-liquid mixing system according to claim 15 or 16, wherein the gas is switched from a different gas supply source and pumped to a pumping means.   The gas-liquid mixing system according to claim 12 or 13, wherein the liquid is a liquid for fuel, and the gas is an auxiliary combustion gas.   The gas-liquid mixing system according to claim 18, wherein the liquid is hydrogen, oxygen, ozone, lower hydrocarbon, or a mixture thereof. A gas-liquid mixing mechanism for gas-liquid mixing by fitting gas-liquid mixed fluid tightly and liquid-tightly into a flow pipe having a gas-liquid mixed fluid inlet and outlet;
(A) an internal introduction port for introducing a gas-liquid mixed fluid from the gas introduction port, an agitation and mixing means for stirring and mixing the gas-liquid mixed fluid introduced from the introduction port, and a discharge port for discharging the agitated and mixed fluid Having a gas-liquid stirring and mixing unit;
(B) a gas-liquid mixture preparation unit having a flow rate adjusting unit that regulates the flow rate of fluid from the gas-liquid stirring and mixing unit, and a pressure changing unit that continuously changes the pressure of the fluid whose flow rate is regulated,
A gas-liquid mixing mechanism comprising:

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