JP2018143996A - Electrolyzed water generator - Google Patents

Abstract

Disclosed is an electrolyzed water generating device that suppresses discharge of air containing chlorine gas and has improved reliability.
According to an embodiment, an electrolyzed water generating apparatus includes a water storage container 24 for storing water, a pair of electrodes 40a and 40b provided in the water storage container, water supply to the water storage container, and drainage from the water storage container. A water supply / drainage mechanism, and dissolution mechanisms 80 and 71 for promoting dissolution of gas generated at the electrodes.
[Selection] Figure 1

Description

  Embodiments described herein relate generally to an electrolyzed water generating apparatus.

  In recent years, electrolyzed water having various functions by electrolyzing water is known. For example, an electrolyzed water generating device that generates hypochlorous acid water as electrolyzed water having a function of sterilization and deodorization, or generates alkaline ionized water as electrolyzed water having a function of beverages and washing and rust prevention has been proposed. . Such an electrolyzed water generating apparatus is a two-chamber electrolysis cell having a pair of electrodes in one room, and two chambers that are divided into an anode chamber and a cathode chamber by providing one diaphragm between the pair of electrodes. A type electrolysis cell or a three-chamber electrolysis cell provided with two diaphragms between a pair of electrodes and an electrolyte chamber separated by two diaphragms between an anode chamber and a cathode chamber is used. . The electrolyzed water generating device generates electrolyzed water having various functions by an electrolyzed product obtained by electrolyzing an electrolyte in an electrolytic solution or water.

  Examples of the electrolyte include chlorides, oxides, alkali salts, carbonates, organic acids and the like intentionally added in addition to ionic components contained in water. For example, in a three-chamber electrolysis cell, the electrolytic solution is supplied only to the central electrolytic chamber, and the anode product and the cathode product are discharged from the anode chamber and the cathode chamber in a form separated from the electrolyte.

  In these electrolyzed water generating apparatuses, a flowing water type is generally used in which electrolysis is performed while flowing water or an electrolytic solution into an electrolysis cell. However, in the flowing water type, conditions relating to electrolysis such as flow rate are likely to vary due to various factors such as fluctuations in water pressure of the water supply equipment and fluctuations in pipe conductance over time. For this reason, a flow meter and a hydraulic pressure flow adjustment mechanism are required, and there are problems that a complicated and expensive piping system is required, frequent abnormal shutdown of the apparatus due to environmental fluctuations and changes with time, and water quality fluctuations.

As means for solving this problem, there has been proposed a batch type (static water type) electrolyzed water generating apparatus in which water or an electrolytic solution is supplied to an electrolysis cell having a predetermined capacity and electrolyzed every time. In the batch method, even if the water pressure etc. fluctuate, the amount of water is stabilized only by a slight fluctuation of the time for water supply and drainage. In addition, a piping system for managing the flow rate is not necessary. Since the amount of electrolysis should just adjust the time which supplies with electricity to an electrode, a simple thing can also be used for a power supply. As described above, the batch type can reduce the mass production cost, and can realize an apparatus that is stable in water quality and difficult to stop.
However, in the batch type electrolyzed water generating apparatus, time for supplying or draining water or an electrolytic solution to the electrolysis cell, that is, time other than electrolysis is required, and the generated amount is smaller than that of the flowing water type. It is not suitable for applications that consume a large amount of. Therefore, the batch type electrolyzed water generator is used for a small amount of application or for an application in which water is stored in a tank for a long time.

Japanese Patent No. 3292930 Japanese Patent No. 3500173

In the batch-type electrolyzed water generating apparatus described above, in order to increase the generation amount, it is necessary to quickly supply water to the electrolysis cell and transfer the generated electrolyzed water. However, when electrolysis is performed in a hydrostatic state, the chlorine gas generated in the electrolysis cell does not completely dissolve and stays in the electrolysis cell space. Therefore, if the space volume in the electrolysis cell changes due to the supply of water to or from the electrolysis cell, the air containing chlorine gas may be discharged to the outside from the drainage pipe.
The problem of the embodiment of the present invention is to provide an electrolyzed water generating apparatus that suppresses the discharge of air containing chlorine gas and has improved reliability.

  According to the embodiment, the electrolyzed water generating apparatus includes a water storage container for storing water, a pair of electrodes provided in the water storage container, water supply / drainage mechanism for supplying water to the water storage container and draining from the water storage container, And a telescopic container that maintains a constant amount of air in the water storage container by expanding and contracting according to water supply and drainage to the water storage container.

FIG. 1 is a perspective view showing an appearance of an electrolyzed water generating apparatus according to a first embodiment. FIG. 2 is a cross-sectional view of the electrolyzed water generating device. FIG. 3 is a cross-sectional view of the electrolyzed water generating device showing a state in which water is supplied to the water storage container and the electrode unit at the start of electrolysis. FIG. 4 is a cross-sectional view of the electrolyzed water generating device showing a state in which electrolyzed water and electrolytic solution are drained after electrolysis. FIG. 5 is a cross-sectional view of the electrolyzed water generating device according to the second embodiment. FIG. 6 is a cross-sectional view showing a dissolution mechanism (a liquid storage container) according to a first modification. FIG. 7 is a cross-sectional view showing a dissolution mechanism (a liquid storage container) according to a second modification.

  Various embodiments will be described below with reference to the drawings. In addition, the same code | symbol shall be attached | subjected to a common structure through embodiment, and the overlapping description is abbreviate | omitted. In addition, each drawing is a schematic diagram for promoting the embodiment and its understanding, and its shape, dimensions, ratio, etc. are different from the actual device, but these are considered in consideration of the following description and known techniques. The design can be changed as appropriate.

(First embodiment)
FIG. 1 is a perspective view showing an appearance of the electrolyzed water generating device according to the first embodiment, and FIG. 2 is a cross-sectional view of the electrolyzed water generating device. As shown in FIG. 1, in this embodiment, the electrolyzed water generating device 10 generates, for example, electrolyzed water (hypochlorous acid water) and drains it every time 1 L of water is supplied. It is configured as a water generator. The electrolyzed water generating device 10 includes a device body 12 having a substantially rectangular box shape. A salt water tank 16 containing an electrolytic solution, for example, salt water, may be installed in the vicinity of the apparatus main body 12. An operation panel 18 connected to the controller is provided on the side wall of the apparatus main body 12. An electrode unit 20 described later is detachably attached to the apparatus main body 12.

  As shown in FIG. 2, the apparatus main body 12 includes, for example, a rectangular block-shaped base 22, a rectangular box-shaped water storage container 24 disposed or fixed on the base 22, and the base 22 and the water storage container 24. And an outer cover (housing) 27 for covering. The base 22 includes a manifold block 26 having a plurality of pipes formed therein. The manifold block 26 and the water storage container 24 are made of a material having excellent corrosion resistance such as polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), etc. so that it can be safely contacted with hypochlorous acid water. Is formed. The outer cover 27 is made of metal or synthetic resin.

  The manifold block 26 has a flat upper surface (installation surface) 26a. The water storage container 24 is fixed to the upper surface 26 a of the manifold block 26. Thereby, a part of the upper surface 26 a constitutes the bottom surface of the water storage container 24. The water storage container 24 includes a rectangular tubular side wall 22a and a ceiling wall 22b that closes the upper end of the side wall 22a and faces the upper surface 26a of the manifold block 26 in parallel. The lower end edge of the side wall 22a is fixed to the upper surface 26a. The side wall 22a of the water storage container 24, the ceiling wall 22b, and the upper surface 26a of the manifold block 26 constitute a water storage space for storing a predetermined amount of water (for example, 1 L). This water storage space also functions as an anode chamber, as will be described later.

  An intake hole 30 is formed through substantially the center of the ceiling wall 22b and opens to the outer and inner surfaces of the ceiling wall 22b. An intake valve 32 for opening and closing the intake hole 30 is provided on the ceiling wall 22b. The intake valve 32 is, for example, a one-way valve, and opens only when the outside air is sucked into the water storage container 24 to open the intake hole 30, and in the reverse direction, that is, in the direction of exhausting the water from the water storage container 24 to the outside of the apparatus. Regulate ventilation.

An electrode unit (electrolytic cell) 20 is disposed in the water storage container 24. The electrode unit 20 has a cylindrical or square casing 36. The housing 36 is formed of a synthetic resin having excellent acid resistance and alkali resistance, such as polyvinyl chloride, polypropylene, and polyethylene. A diaphragm 37 is provided in the housing 36, and the inside of the housing 36 is partitioned into a stirring chamber (anode chamber) 38 a and a cathode chamber (electrolyte chamber) 38 b by the diaphragm 37. As the diaphragm 37, a diaphragm capable of transmitting ions, for example, an ion exchange membrane or a porous membrane can be used.
A plate-like anode 40 a is disposed in the stirring chamber 38 a and faces the diaphragm 37. A plate-like cathode 40b is disposed in the cathode chamber 38b and faces the diaphragm 37 and the anode 40a. In the housing 36, a large number of through holes are formed in a side wall that defines the stirring chamber 38a. Thus, the stirring chamber 38a communicates with the water storage container 24 through a large number of through holes. The space in the water storage container 24 and the stirring chamber 38a can function as an anode chamber. A vent hole 44 is provided in the upper part of the housing 36. The cathode chamber 38 b communicates with the inside of the water storage container 24 through the vent hole 44. The hydrogen gas generated by the cathode 40 b is configured to escape to the anode chamber through the vent hole 44. A water supply / drain port 46 is provided at the bottom of the housing 36. The water supply / drain port 46 communicates with the cathode chamber 38b.

The electrode unit 20 configured in this way is disposed in the water storage container 24 through an opening 48 formed in the ceiling wall 22b of the water storage container 24, for example. The water supply / drain port 46 of the electrode unit 20 is engaged with a water supply port 50 provided on the upper surface 26 a of the manifold block 26. The upper end portion of the electrode unit 20 engages with the opening 48 of the ceiling wall 22b, and the upper end surface of the electrode unit 20 is substantially flush with the upper surface of the ceiling wall 22b.
The electrode unit 20 can be pulled out of the water storage container 24 through the opening 48. The electrode unit 20 is not limited to a detachable type, and may be fixedly disposed in the apparatus main body 12.

  The electrolyzed water generating apparatus 10 includes a dissolution mechanism for promoting the dissolution of chlorine gas. In the present embodiment, as the dissolution mechanism, a bubble generation mechanism 71 that dissolves chlorine gas by generating bubbles containing chlorine gas in water, that is, promotes reaction with water, is used. The bubble generating mechanism 71 includes an air supply pipe 72, a porous body 74, and an air supply pump P1. The air supply pipe 72 has an intake side end 72a and an exhaust side end 72b. The intake side end 72 a passes through the ceiling wall 22 b and opens into the upper space of the water storage container 24. The exhaust side end 72 b extends through the ceiling wall 22 b to the bottom of the water storage container 24. The porous body (for example, sponge) 74 is connected to the exhaust side end 72b of the air supply pipe 72, and is located in the vicinity of the upper surface (bottom surface of the water storage container 24) 26a of the manifold block 26. The porous body 74 is formed in a rectangular shape, for example, and faces the upper surface 26a substantially in parallel. The air supply pump P <b> 1 is provided on the ceiling wall 22 b and is connected to the middle part of the air supply pipe 72.

In the bubble generating mechanism 71, the air in the upper space of the water storage container 24 is sucked from the intake side end 72 a of the air supply pipe 72 by driving the air supply pump P 1, and the water storage container is discharged from the exhaust side end 72 b of the air supply pipe 72. Exhaust in water in 24. At this time, air is exhausted through the porous body 74. Air passing through the porous body 74 becomes bubbles, and the water in the water storage container 24 rises and reaches the upper space. By flowing such fine bubbles containing chlorine gas into water, the contact area between the chlorine gas contained in the bubbles and water is expanded, and the dissolution of chlorine gas is promoted. Thereby, chlorine gas can be dissolved in water and lost in a relatively short time. In addition, when a large number of bubbles rise from the bottom side to the top side of the water storage container 24, convection occurs in the water in the water storage container 24, and the water is agitated. By stirring the water in this manner, dissolution of chlorine gas can be promoted, and concentration unevenness of the generated hypochlorous acid can be eliminated.
Even without the porous body 74, the air exhausted from the exhaust side end 72b becomes bubbles and rises in the water, so that the dissolution can be promoted, but by passing the porous body 74, Finer bubbles can be formed to increase the contact area between chlorine gas and water. Thereby, it becomes possible to further promote the dissolution of chlorine gas.

  As shown in FIG. 2, the electrolyzed water generating device 10 includes a water supply / drainage mechanism 100 that drains water from the water storage container 24 and water supply in the water storage container 24. The water supply / drainage mechanism 100 includes an electrolyte supply / drainage mechanism that supplies an electrolytic solution, for example, salt water, to the electrolytic chamber (here, the cathode chamber 38b) of the electrode unit 20 and drains the salt water from the electrolytic chamber. The water supply / drainage mechanism 100 is configured as follows.

  A water supply pipe 52 and an overflow pipe (discharge pipe) 54 are provided in the water storage container 24. The water supply pipe 52 is connected to a water supply port formed on the upper surface 26a of the manifold block 26, and extends substantially vertically from the manifold block 26 to the vicinity of the ceiling wall 22b. The upper end of the water supply pipe 52 is located in the vicinity of the ceiling wall 22b and constitutes a water supply port. The overflow pipe 54 is connected to a drain outlet formed on the upper surface 26a of the manifold block 26, and extends substantially vertically from the manifold block 26 to the vicinity of the ceiling wall 22b. The upper end of the overflow pipe 54 is located in the vicinity of the ceiling wall 22 b and slightly lower than the upper end of the water supply pipe 52. The overflow pipe 54 prevents the backflow to the water supply pipe 52 and defines the upper limit of the water surface in the water storage container (anode chamber) 24. When water exceeding a predetermined amount is supplied into the water storage container 24, the excess water is drained from the overflow pipe 54.

  A drain hole 56 for draining the generated electrolyzed water is provided on the upper surface 26 a of the manifold block 26. In the manifold block 26, a water supply pipe 60, a drain pipe (discharge pipe) 62, a transfer pipe 64, and an electrolyte pipe 66 are formed, and a plurality of valves are further provided. Outside the water storage container 24, on the upper surface 26a of the manifold block 26, a solenoid (not shown) for driving the valve, a liquid feed pump P, and a controller 68 for controlling the valve and the pump are provided (in the drawing, for simplification). These are illustrated in the area within the manifold block 26).

  One end of the water supply pipe 60 is connected to the water supply pipe 52, and the other end (outer end) is connected to the water supply equipment through the pipe. The water supply pipe 60 is provided with a water supply valve 70a for switching between water supply and stop. One end of the discharge pipe 62 is connected to the overflow pipe 54, and the other end (outer end) is connected to a drainage facility (not shown) via a drainage tube (discharge pipe) 63.

  A liquid reservoir container (liquid reservoir) 80 that functions as a dissolution mechanism is connected to the end of the drainage tube 63. The liquid reservoir 80 is formed in a rectangular box shape, for example. The drainage tube 63 extends into the liquid reservoir 80 and opens near the bottom surface of the liquid reservoir 80. A discharge pipe 81 is connected to the upper portion of the side wall of the liquid reservoir 80. The discharge pipe 81 is connected to a drainage facility (not shown) through a pipe.

Water is sent from the overflow pipe 54 and the discharge pipe 62 or the electrolyte pipe 66 through the drain tube 63 when supplying water to the water storage container 24 or when draining from the cathode chamber 38b. . Accordingly, a predetermined amount of water is always accumulated in the liquid reservoir 80, and water exceeding the predetermined amount is sent from the discharge pipe 81 to the discharge facility. At the time of drainage or the like, the air in the water storage container 24 is sent to the liquid storage container 80 through the overflow pipe 54 and the drainage tube 63. This air is exhausted from the drain outlet of the drain tube 63 to the water in the liquid storage container 80, and rises in the water as bubbles. Therefore, even when the air contains chlorine gas, by evacuating into the water as bubbles, melting of the chlorine gas is promoted and dissolved in water and disappears. In addition, the liquid storage container 80 in which water is stored can also serve as a barrier against odors and insects flowing backward from the drainage facility.
In addition, the magnitude | size (water storage amount) and structure of the liquid storage container 80 are not restricted to the example of illustration, Various selection is possible.

  One end of the transfer pipe 64 is connected to the drain hole 56, and the other end (outer end) is connected to an appropriate container, for example, a generated water tank via the pipe. The transfer pipe 64 is provided with a transfer valve 70c for adjusting the transfer of the electrolyzed water. One end of the electrolyte pipe 66 communicates with a water supply port 50 provided on the upper surface 26a of the manifold block 26, and the other end (outer end) is connected to the electrolyte tank, here, the salt water tank 16 through the pipe. ing. The electrolyte pipe 66 includes a pipe branched from the pipe directed to the salt water tank 16 on the way and connected to the discharge pipe 62, and each is provided with a water supply valve 70d and a drain valve 70e for controlling the opening and closing of the pipe. ing. A liquid feed pump P that can change the direction of water supply is connected between the branch portion and the water supply port 50.

  The water supply valve 70a, the transfer valve 70c, the water supply valve 70d, and the drain valve 70e are each configured by, for example, an electromagnetic valve, and the controller 68 controls the opening and closing. The liquid feeding pump P can switch the liquid feeding direction, and the controller 68 controls the operation, stop, and liquid feeding direction switching of the liquid feeding pump P. The controller 68 includes a power source 69 that applies a predetermined electrolytic voltage to the anode 40 a and the cathode 40 b of the electrode unit 20. The operation of the air supply pump P <b> 1 of the bubble generation mechanism 71 is controlled by the controller 68.

Next, the electrolyzed water generating operation of the electrolyzed water generating apparatus 10 configured as described above will be described.
2, 3, and 4 sequentially show an example of the generating operation in the electrolyzed water generating apparatus 10. In the state of the electrolyzed water generating device before the start of electrolysis, the water storage container 24 has no water, and the cathode chamber 38b of the electrode unit 20 has no electrolyte (for example, salt water).

  As shown in FIG. 3, when electrolyzed water generation is started, first, with the water supply valve 70d opened, the liquid feed pump P is driven to the water supply side, and the electrolyte pipe 66, the water supply port 50, Salt water is supplied to the cathode chamber 38 b through the water supply / drain port 46. After supplying a predetermined amount of salt water until the cathode 40b is buried in the salt water, the liquid feed pump P is stopped and the water supply valve 70d is closed. The supply amount of the salt water may be controlled by the operation time of the liquid feed pump P, or a liquid amount sensor is provided in the electrode unit 20 and controlled according to the detection of the liquid amount sensor. Also good.

  Next, water as electrolyzed water is supplied to the water storage container 24, that is, the anode chamber. The water supply opens the water supply valve 70a, and a predetermined amount is poured into the water storage container 24 through the water supply pipe 60 and the water supply pipe 52 by the water pressure of the water supply equipment. That is, water is supplied into the water storage container 24 from the water supply port at the upper end of the water supply pipe 52. At this time, for example, 1 L of water is set to be supplied to the water storage container 24, but the air in the water storage container 24 is pushed out into this water, and the overflow pipe 54, the discharge pipe 62, the drain tube 63, the liquid It is discharged to the drainage facility through the reservoir 80. Even if air containing chlorine gas remains in the water storage container 24 by the previous electrolysis operation, the chlorine gas becomes bubbles and dissolves in the water in the container by passing this air through the liquid storage container 80. At the same time, excess water is drained to the drainage facility through the overflow pipe 54, the discharge pipe 62, the drain tube 63, and the liquid reservoir 80.

  When water is supplied for a predetermined amount, for example, 1 L, the water supply valve 70a is closed and water supply is stopped. The water supply amount may be controlled by the opening time of the water supply valve 70a, or a liquid amount sensor may be provided in the water storage container 24 and controlled according to the detection of the liquid amount sensor. Good.

  After the supply of the electrolytic solution and the water to be electrolyzed, as shown in FIG. 2, an electrolytic voltage is applied from the controller 68 to the anode 40a and the cathode 40b to start electrolysis. A positive potential is supplied to the anode 40a and a negative potential is supplied to the cathode 40b, and electrolysis is performed at a predetermined current for a predetermined time. Thereby, 1 L of water in the water storage container (anode chamber) 24 is changed to hypochlorous acid water of about 20 to 100 ppm. At this time, the anode 40a generates chlorine gas from chlorine ions that have moved through the diaphragm 37, and reacts with the water in the stirring chamber 38a and the water storage container 24 to generate hypochlorous acid and hydrochloric acid. However, when chlorine gas is reacted with still water, a part of the chlorine gas does not react with water but floats up to the water surface in the form of bubbles and is released to the air in the upper part of the water storage container 24.

  In the present embodiment, during the electrolysis operation, the air pump P1 is driven to suck air in the upper space of the water storage container 24 from the intake side end 72a of the air supply pipe 72 and from the exhaust side end 72b of the air supply pipe 72. The water in the water storage container 24 is exhausted. At this time, air is exhausted through the porous body 74. Air passing through the porous body 74 becomes bubbles, and the water in the water storage container 24 rises and reaches the upper space. By flowing such bubbles containing chlorine gas into water, the dissolution of chlorine gas is promoted and dissolved and disappeared in water in a relatively short time. In addition, when a large number of bubbles rise from the bottom side to the top side of the water storage container 24, convection occurs in the water in the water storage container 24, and the water is agitated. By stirring water in this way, dissolution of chlorine gas can be promoted. Thereby, the chlorine gas remaining in the upper space of the water storage container 24 is significantly reduced.

  After the electrolysis is finished, energization to the anode 40a and the cathode 40b is stopped and the air supply pump P1 is stopped. Next, as shown in FIG. 4, the hypochlorous acid water generated in the water storage container 24 is transferred to the generated water tank. That is, the transfer valve 70 c is opened, and the hypochlorous acid water in the water storage container 24 is transferred from the drain hole 56 to the generated water tank through the transfer pipe 64. When the hypochlorous acid water in the water storage container 24 disappears due to the transfer of the hypochlorous acid water, the inside of the water storage container 24 is depressurized. Accordingly, the intake valve 32 is opened, and the outside air is stored in the water storage container through the intake hole 30. 24 is inhaled. When all 1 L of hypochlorous acid water is transferred and the water storage container 24 is emptied, outside air equivalent to 1 L is similarly sent from the intake hole 30 into the water storage container 24.

After the transfer of hypochlorous acid water is completed, the transfer valve 70c is closed. With the drain valve 70e opened, the liquid feed pump P is driven to the drain side. The salt water in the cathode chamber 38 b of the electrode unit 20 is drained from the feed / drain port 46 to the drainage facility through the feed port 50, the electrolyte pipe 66, the branch pipe, the discharge pipe 62, and the liquid reservoir 80 by the liquid feed pump P. After draining, the drain valve 70e is closed and the liquid feed pump P is stopped.
Thus, the operation of generating hypochlorous acid water is completed. In addition, it is not necessary to perform the water supply and drain operation of the electrolyte solution to the cathode chamber 38b every time. The cycle of supplying water to be electrolyzed, electrolysis, and transferring hypochlorous acid water may be repeated a plurality of times, and salt water may be drained and supplied at the timing when the salt water is consumed.

  According to the electrolyzed water generating apparatus 10 configured as described above, the liquid reservoir container 80 and the bubble generation mechanism 71 functioning as a dissolution mechanism are provided, and air containing the generated chlorine gas is allowed to flow into the water as bubbles, thereby generating chlorine. The structure is such that gas dissolution is promoted and dissolved in water in a relatively short time to disappear. Therefore, it can suppress that chlorine gas is discharged | emitted by discharge equipment or the exterior, and the electrolyzed water generating apparatus with improved reliability can be obtained.

  The configuration of the bubble generating mechanism 71 is not limited to the above-described embodiment, and can be variously changed. For example, the air pipe extends from the ceiling wall 22b of the water storage container 24 into the water storage container. However, the present invention is not limited to this, and the air supply pipe extends from the side wall 22a of the water storage container 24 into the water storage container. May be extended into the water storage container. The air supply pump P1 is not limited to the ceiling wall 22b, and may be provided on the manifold block 26. In addition, the liquid reservoir is not limited to the rectangular box-shaped liquid reservoir 80 described above, and may be configured by a U-shaped pipe obtained by bending a part of the discharge pipe into a U-shape.

  Next, an electrolyzed water generating apparatus according to another embodiment or modification will be described. In other embodiments and modifications described below, the same parts as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted or simplified. It explains in detail focusing on a different part.

(Second Embodiment)
FIG. 5 is a cross-sectional view showing an electrolyzed water generating apparatus according to the second embodiment.
According to the second embodiment, the electrolyzed water generating apparatus 10 includes an injection mechanism 75 as a dissolution mechanism that promotes the dissolution of chlorine gas, instead of the bubble generation mechanism. The injection mechanism 75 includes a water supply pipe 76, a water supply pump P2, and an injection nozzle 78. The water supply pipe 76 has a water absorption side end 76a and a water discharge side end 76b. The water absorption side end 76 a extends through the ceiling wall 22 b to the bottom of the water storage container 24. The drainage side end 76 b passes through the ceiling wall 22 b and opens into the upper space of the water storage container 24. The injection nozzle 78 is disposed in the upper space of the water storage container 24 and is connected to the drain side end 76 b of the water supply pipe 76. The spray nozzle 78 faces the water surface of the water supplied into the water storage container 24 with a gap. The water supply pump P <b> 2 is provided on the ceiling wall 22 b and is connected to the middle part of the water supply pipe 76.

  In the injection mechanism 75, by driving the water supply pump P <b> 2, the water in the water storage container 24 is absorbed from the water absorption side end 76 a of the water supply pipe 76 and supplied to the injection nozzle 78 from the drain side end 76 b of the water supply pipe 76. Thereby, water is jetted from the jet nozzle 78 toward the water surface. At this time, the water is jetted in the form of fine particles by the jet nozzle 78.

During electrolysis, the chlorine gas generated at the anode 40a is released into the water in the water storage container 24, reacts with the water and dissolves, and generates hypochloric acid water. However, when chlorine gas is reacted with still water, a part of the chlorine gas does not react with water but floats up to the water surface in the form of bubbles and is released to the air in the upper part of the water storage container 24. Therefore, as described above, fine particulate water is jetted from the jet nozzle 78 and falls on the chlorine gas released into the upper space. Thereby, chlorine gas and water are made to react positively and the dissolution of chlorine gas is promoted. By injecting water from the injection nozzle 78 during the electrolysis operation, chlorine gas remaining in the upper space can be greatly reduced.
The other structure of the electrolyzed water generating apparatus 10 is the same as that of the first embodiment described above.

  According to the second embodiment configured as described above, the liquid reservoir 80 and the injection mechanism 75 functioning as a dissolution mechanism are provided, and the dissolution of the generated chlorine gas is promoted. The gas is dissolved in water to disappear. Therefore, it can suppress that chlorine gas is discharged | emitted by discharge equipment or the exterior, and the electrolyzed water generating apparatus with improved reliability can be obtained.

  In addition, the structure of the injection mechanism 75 is not limited to embodiment mentioned above, A various change is possible. For example, the water supply pipe 76 is configured to extend from the ceiling wall 22b of the water storage container 24 into the water storage container, but is not limited thereto, and extends from the side wall 22a of the water storage container 24 into the water storage container, or a manifold block. 26 may extend into the water storage container. Further, the water pump P2 is not limited to the ceiling wall 22b, but may be provided on the manifold block 26. In addition, the liquid reservoir 80 is not limited to a rectangular box shape, and may be configured by a U-shaped pipe obtained by bending a part of the discharge pipe into a U-shape.

(Love 1 variant)
The configuration of the liquid reservoir 80 described above is not limited to the first and second embodiments described above, and can be variously modified. FIG. 6 is a cross-sectional view showing a liquid reservoir container according to a first modification. According to the first modified example, the liquid storage container 80 that functions as a dissolution mechanism has a double structure. That is, the liquid storage container 80 includes an outer container 82 and an inner container 84 disposed in the outer container 82. The outer container 82 has a rectangular tube shape or a cylindrical shape whose upper end and lower end are closed. The inner container 84 is formed in a cylindrical shape, for example, and is disposed coaxially in the outer container 82. The upper end of the inner container 84 is fixed to the upper end wall of the outer container 82 and is closed by this upper end wall. The lower end of the inner container 84 is located below the middle in the outer container 82 and opens into the outer container 82. The drain pipe or drain tube 63 passes through the side wall of the outer container 82 and is connected to the side wall of the inner container 84. Thereby, the drainage tube 63 communicates with the inner container 84. Further, a discharge pipe 81 is connected to the outer container 82. The discharge pipe 81 is connected to a position above the lower end opening of the inner container 84.

Water is stored in the liquid storage container 80. The inside of the inner container 84 is filled with gas (air), and water is stored in the outer container 82 outside the inner container 84 without entering the inner container 84. The air sent through the drainage tube 63 flows into the inner container 84, and the air exceeding the volume of the inner container 84 is released into the water from the lower end opening of the inner container 84. The released air becomes bubbles and floats up to the water surface, and is released from the water surface to the upper space of the outer container 82. Air that exceeds the volume of the upper space is discharged from the discharge pipe 81.
By using such a liquid storage container 80, the contact time between the air or bubbles containing chlorine gas and water can be increased, and the chlorine gas can be further dissolved in water.

(Second modification)
FIG. 7 is a cross-sectional view showing a liquid reservoir container according to a second modification. According to the second modified example, the liquid storage container 80 that functions as a dissolution mechanism has a meandering flow path that is partitioned into a plurality of chambers. In the liquid reservoir 80, a first partition plate 86a and a second partition plate 86b are provided. The first partition plate 86a and the second partition plate 86b face each other and in parallel with a gap between the bottom plate and the ceiling plate of the container 80. The first partition plate 86a extends from one side wall of the container 80 to the vicinity of the other side wall, and its extending end is bent at a right angle toward the bottom plate side. A first air chamber A1 is defined by the first partition plate 86a. The second partition plate 86b extends from the other side wall of the container 80 to the vicinity of the one side wall, and an extended end portion thereof is bent at a right angle toward the bottom plate side. A second air chamber A2 is defined by the second partition plate 86b. A discharge port 90 is formed on one end side of the ceiling plate of the container 80. Furthermore, the end of the ceiling plate on the outlet 90 side is bent at a right angle toward the bottom plate. The ceiling plate defines the third air chamber A3. As described above, the first partition plate 86a and the second partition plate 86b form a flow path extending in a meandering manner from the bottom plate side to the discharge port 90, and the first to third air is formed above each flow path. Chambers A1, A2, A3 are defined.

The drain tube 63 is connected to the lower portion of the side wall of the liquid reservoir 80 and communicates with the lowermost flow path. The water sent through the drainage tube 63 flows through the lowermost flow channel, the intermediate flow channel, and the uppermost flow channel in order, and is sent from the discharge port 90 to the discharge facility through the drainage or a discharge pipe (not shown). Further, when chlorine gas is contained in water, the chlorine gas dissolves in water and disappears while flowing through the meandering channel together with water. Chlorine gas that does not melt completely floats and is stored in the first air chambers A1, A2, and A3. The chlorine gas accumulated in the first air chambers A1, A2, and A3 gradually dissolves in water by contacting the water flowing through the flow path. Thereby, most of the residual chlorine gas dissolves and disappears in the liquid reservoir 80 and is hardly discharged to the outside.
By using such a liquid storage container 80, the contact time between the air or bubbles containing chlorine gas and water can be increased, and the chlorine gas can be further dissolved in water. In the second modified example, the flow path and the air chamber in the liquid reservoir 80 are three layers or triple layers, but are not limited to this, and may be two layers or four layers or more.

The present invention is not limited to the above-described embodiment or modification as it is, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined. The shape, forming material, dimensions, and the like of each component constituting the electrolyzed water generating device are not limited to the above-described embodiment, and can be variously changed as necessary.
For example, the electrode unit is not limited to the above-described two-chamber electrolysis cell, but is a single-chamber electrolysis cell having a pair of electrodes in one room, or two diaphragms between the pair of electrodes. A three-chamber electrolysis cell having an electrolyte solution chamber separated by two diaphragms between the anode chamber and the cathode chamber may be used.

DESCRIPTION OF SYMBOLS 10 ... Electrolyzed water production | generation apparatus, 12 ... Apparatus main body, 20 ... Electrode unit (electrolysis cell),
24 ... Water storage container, 26 ... Manifold block, 36 ... Housing, 37 ... Diaphragm,
38a ... stirring chamber (anode chamber), 38b ... cathode chamber, 40a ... anode, 40b ... cathode,
52 ... water supply pipe, 54 ... overflow pipe, 60 ... water supply pipe, 62 ... discharge pipe,
63 ... Drain tube, 64 ... Transfer piping, 66 ... Electrolyte piping, 68 ... Controller,
71 ... Bubble generation mechanism, 74 ... Porous body, 75 ... Injection mechanism, 78 ... Injection nozzle,
80 ... Liquid reservoir

Claims (10)

A water storage container for storing water;
A pair of electrodes provided in the water reservoir;
A water supply / drainage mechanism for supplying water to the water storage container and discharging water from the water storage container;
A dissolution mechanism that promotes dissolution of the gas produced at the electrode;
An electrolyzed water generating apparatus comprising: The water supply / drainage mechanism includes a discharge pipe that extends into the water storage container and discharges part of the air and water in the water storage container,
The dissolution mechanism includes a liquid reservoir connected to the discharge pipe. The liquid reservoir stores water, and air sent from the discharge pipe is bubbled into the stored water. The electrolyzed water generating apparatus according to claim 1 configured to pass through.   3. The liquid reservoir includes a liquid reservoir that stores water, and the discharge pipe has an end that extends into the water of the liquid reservoir and opens into the liquid reservoir. The electrolyzed water generating apparatus described in 1. The liquid reservoir includes a liquid reservoir container for storing water,
The liquid storage container includes an outer container and an inner container disposed in the outer container, and the inner container is located below the middle of the inner container and opens into the inner container. End with
The electrolyzed water generating apparatus according to claim 2, wherein the discharge pipe passes through the outer container and is connected to the inner container. The liquid reservoir includes a liquid reservoir container for storing water,
The liquid reservoir container is partitioned by a partition member, has a meandering flow path and an air chamber, and the discharge pipe is connected to the flow path in the liquid reservoir container. The electrolyzed water production | generation apparatus of description.   The electrolyzed water generating apparatus according to any one of claims 1 to 5, wherein the dissolution mechanism includes a bubble generating mechanism that allows a part of the air in the water storage container to pass through the water in the water storage container as bubbles.   The bubble generating mechanism includes an air supply pipe having an intake side end opened in an upper space in the water storage container and an exhaust side end opened in a bottom part of the water storage container, and an air supply pump connected to the air supply pipe; The electrolyzed water generating apparatus according to claim 6.   The electrolyzed water generating device according to claim 7, wherein the bubble generating mechanism has a porous body provided at an exhaust side end of the air supply pipe.   6. The electrolyzed water generating device according to claim 1, wherein the dissolution mechanism includes an injection mechanism that absorbs water in the water storage container and injects the water toward the water surface.   The injection mechanism includes a water supply pipe having a water absorption side end opened at a bottom portion in the water storage container and a drainage side end opened in an upper space in the water storage container, a water supply pump connected to the water supply pipe, The electrolyzed water generating device according to claim 9, further comprising: an injection nozzle that is connected to a drain side end of a water pipe and faces the water surface.

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