JP6612714B2 - Electrolyzed water generator - Google Patents

Description

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

In recent years, there has been provided an electrolyzed water generating apparatus that generates electrolyzed water having various functions by electrolyzing water, for example, alkaline ionized water, ozone water, or hypochlorous acid water. Such an electrolyzed water generating apparatus includes, for example, a three-chamber type electrolytic cell. The three-chamber type electrolytic cell is divided into an intermediate chamber through which an electrolytic solution flows, and an anode chamber and a cathode chamber located on both sides of the intermediate chamber. The anode chamber and the cathode chamber are provided with an anode and a cathode, respectively.
For example, when producing hypochlorous acid water as the electrolyzed water, salt water (electrolytic solution) is circulated in the intermediate chamber, and water is circulated in the anode chamber and the cathode chamber, respectively. By electrolyzing the salt water in the intermediate chamber at the cathode and the anode, hypochlorous acid water is generated from the chlorine gas generated at the anode, and sodium hydroxide water is generated in the cathode chamber. At this time, the salt water is supplied to the intermediate chamber by circulating the salt water between the salt water tank for generating the salt water and the intermediate chamber.

Japanese Patent No. 3500173 JP 2012-46773 A

  In the electrolyzed water generating apparatus as described above, the circulating salt water increases in effective chlorine concentration over time, and the liquidity becomes strongly acidic including chlorine. Therefore, chlorine gas is generated. The generated chlorine gas is released into the apparatus and may corrode structures and functional parts inside the apparatus. Moreover, when the salt water tank is built in the apparatus, the entire apparatus becomes large.

  The subject of this embodiment is providing the electrolyzed water generating apparatus in which leakage of chlorine gas is suppressed and size reduction is possible.

According to the embodiment, the electrolyzed water generating apparatus includes a housing having a vent, an intake fan that sucks outside air into the housing, a first electrode chamber in which a first electrode is provided, and a second electrode. A second electrode chamber, an intermediate chamber provided between the first electrode chamber and the second electrode chamber and containing an electrolyte solution, an electrolytic cell provided in the housing, and an electrolyte solution smaller than the external tank for reserving, has a sealed structure that accommodates an electrolyte and provides a buffer tank provided in the housing, is provided in the housing, the electrolyte solution to the buffer tank from the external tank A first pump; and an electrolyte supply unit that is provided in the housing, supplies an electrolyte solution of the buffer tank to the intermediate chamber by a second pump, and sends the electrolyte solution flowing through the intermediate chamber to the buffer tank; Extending from the buffer tank to the outside of the housing It is equipped with a, and the drain pipe are.

FIG. 1 is a perspective view showing an appearance of an electrolyzed water generating apparatus according to a first embodiment. FIG. 2 is a perspective view schematically showing an internal structure of the electrolyzed water generating device. FIG. 3 is a configuration diagram schematically showing the configuration of the electrolyzed water generating device. FIG. 4 is a perspective view showing a buffer tank of the electrolyzed water generating device. FIG. 5 is a sectional view of the buffer tank taken along line AA in FIG. FIG. 6 is a cross-sectional view of the buffer tank taken along line BB in FIG. 4.

  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.

Drawing 1 is a perspective view showing the appearance of the electrolyzed water generating device concerning an embodiment.
The electrolyzed water generating apparatus 10 includes a rectangular box-shaped main body 50. For example, an external tank 60 containing salt water is connected to the apparatus main body 50 as an electrolytic solution. The external tank 60 has a capacity of about 40 L, for example, and the electrolytic solution is supplied from the external tank 60 to the apparatus main body 50. The capacity of the external tank 60 can be arbitrarily selected by the user, and a larger capacity external tank or a smaller capacity external tank can be selected.

  The apparatus main body 50 includes a rectangular box-shaped casing 52 and various devices and various piping systems arranged in the casing 52. Various connection joints are provided on the bottom wall 52 c of the housing 52. A vent hole 55 is provided in the front wall 52 a of the housing 52. A power switch 53 and an intake fan 54 are provided on the side wall 52 b of the housing 52.

FIG. 2 is a perspective view schematically showing the internal structure of the electrolyzed water generating device with the front cover of the casing removed, and FIG. 3 is a block diagram schematically showing the configuration of the electrolyzed water generating device.
As shown in FIG. 2, the apparatus main body 50 includes a flat rectangular electrolytic cell (electrolysis cell) 20 disposed in the casing 52, a control box 22 fixed to the back wall 52 d of the casing 52, A buffer tank 70, a plurality of pumps, various piping systems, and the like are provided. The electrolytic cell 20 is provided substantially at the center in the housing 52 and faces the front wall of the housing 52 substantially in parallel. The control box 22 is located between the electrolytic cell 20 and the back wall 52d, and is opposed to the electrolytic cell 20 with a gap. A water supply piping system for supplying water to the electrolytic cell 20 and a discharge piping system for draining the generated water generated in the electrolytic cell are provided on one side of the electrolytic cell 20, for example, on the left side of the electrolytic cell 20 in FIG. Yes. The buffer tank 70 is provided on the opposite side of the water supply piping system and the drain piping system with the electrolytic cell 20 interposed therebetween. That is, the buffer tank 70 is provided on the right side of the electrolytic cell 20 in FIG.

  As shown in FIGS. 2 and 3, the electrolytic cell 20 is configured as, for example, a three-chamber type electrolytic cell. The electrolytic cell 20 is formed in, for example, a flat rectangular box shape, and the inside thereof is an intermediate chamber (electrolyte chamber) by an anion exchange membrane (first diaphragm) 16a and a cation exchange membrane (second diaphragm) 16b. 15a is divided into an anode chamber (first electrode chamber) 15b and a cathode chamber (second electrode chamber) 15c located on both sides of the intermediate chamber 15a. An anode (first electrode) 18a is provided in the anode chamber 15b, and is adjacent to the anion exchange membrane 16a. A cathode (second electrode) 18b is provided in the cathode chamber 15c, and is adjacent to the cation exchange membrane 16b. The anode 18a and the cathode 18b are formed in a rectangular plate shape having substantially the same size, and face each other with the intermediate chamber 15a interposed therebetween.

  The electrolyzed water generating device 10 supplies raw water for electrolysis (electrolyzed water), for example, water to the anode chamber 15b and the cathode chamber 15c of the electrolytic cell 20, and a water supply unit 30 for draining the generated generated water, and an intermediate chamber 15a, an electrolyte supply pipe system for supplying an electrolyte containing halogen ions, for example, salt water, a buffer tank 70, and an electrolyte supply section 40 having an electrolyte circulation pipe system, and positive and negative voltages are applied to the anode 18a and the cathode 18b. A power supply 26 for applying a negative voltage, and a controller (control circuit board) 28 for controlling the power supply 26 and a solenoid valve, a pump, and the like described later are provided. The power supply 26 and the controller 28 are disposed in the control box 22 described above.

  The water supply unit 30 includes a water supply pipe 32 that guides water from a water supply source (not shown) that supplies water at a predetermined water pressure to the lower part of the anode chamber 15b and the lower part of the cathode chamber 15c, and the anode chamber 15b. The first drain pipe 34a that drains the water that flows through the anode chamber 15b, the second drain pipe 34b that drains the water that flows through the cathode chamber 15c from the top of the cathode chamber 15c, and the first drain pipe 34a. And the orifice 35b provided in the second drain pipe 34b. The water supply pipe 32 is provided with an electromagnetic valve 36, a pressure reducing valve 37, and a flow meter 38 in that order from the inflow end side. The water supply pipe 32 is branched into three parts, a first branch pipe 32a, a second branch pipe 32b, and a third branch pipe 32c, on the downstream side of the flow meter 38. A check valve 33 is provided in each of the first branch pipe 32a, the second branch pipe 32b, and the third branch pipe 32c.

The first branch pipe 32a is connected to the lower part of the anode chamber 15b. The second branch tube 32b is connected to the lower part of the cathode chamber 15c. The third branch pipe 32c is connected to the middle part of the second branch pipe 32a. The third branch pipe 32c is provided with an electromagnetic valve (open / close valve) 41. By supplying water with the solenoid valve 41 closed, a predetermined amount, for example, 1.5 L / min of water is supplied to the anode chamber 15b through the first branch pipe 32a, and the cathode chamber 15c is supplied through the second branch pipe 32b. A predetermined amount, for example, 0.5 L / min of water is supplied. On the other hand, when the electromagnetic valve 41 is opened, a predetermined amount, for example, 1.5 L / min of water is supplied to the first branch pipe 32a through the third branch pipe 32c. That is, approximately twice (3 L / min) of water can be supplied to the anode chamber 15b through the first branch pipe 32a and the third branch pipe 32c. As described above, by opening and closing the electromagnetic valve 41, two types of water supply amounts to be supplied to the anode chamber 15b can be selected. By changing the amount of water supply, the concentration of acidic water (hypochlorous acid water) generated in the anode chamber 15b can be changed. Thereby, it becomes possible to select and generate and drain two types of acidic water having different concentrations.
The third branch pipe 32c and the electromagnetic valve 41 may be omitted, and water may be supplied to the anode chamber 15b with a constant water supply amount. Or it is good also as a structure which can provide another branch pipe and a solenoid valve, and can adjust water supply amount to 2 or more types.

  As shown in FIGS. 2 and 3, the electrolytic solution supply unit 40 includes a buffer tank 70 that stores salt water as an electrolytic solution, and a supply pump (first pump) connected to the external tank 60 via a supply pipe 51. 42, a salt water supply pipe 44 that supplies fresh (unused) salt water from the supply pump 42 to the buffer tank 70, a circulation pipe system 46, and a drain pipe 48 that drains surplus (overflow) salt water from the buffer tank 70. And. In one example, the amount of electrolyte supplied by the supply pump 42 is about 4 mL / min.

  The circulation piping system 46 supplies salt water from the buffer tank 70 to the lower portion of the intermediate chamber 15a, and returns the salt water flowing through the intermediate chamber 15a to the buffer tank 70 from the upper portion of the intermediate chamber 15a. A circulation pump (second pump) 58 connected to the circulation pipe 56 between the inflow side of the chamber 15a. In one example, the circulation amount of the electrolyte solution by the circulation pump 58 (the flow rate of the electrolyte solution supplied to the intermediate chamber 15a) is 0.2 mL / min.

  As shown in FIG. 2, an intake fan 54 is attached to the side wall of the control box 22. Outside air is taken into the control box 22 by the intake fan 54 and further exhausted from an exhaust port (not shown) of the control box 22 to the outside. As a result, the power supply and control circuit board in the control box 22 can be cooled, and the gas in the control box 22 can be exhausted to the outside.

Next, the buffer tank 70 will be described in detail. 4 is a perspective view of the buffer tank, FIG. 5 is a cross-sectional view of the buffer tank taken along line AA in FIG. 4, and FIG. 6 is a view of the buffer tank taken along line BB in FIG. It is sectional drawing.
4 to 6, the buffer tank 70 includes, for example, a cylindrical tank main body 72 having a bottom wall 72a, and a rectangular plate-like lid body 74 that hermetically closes an upper end opening 72b of the tank main body 72. ,have. An O-ring 73 is sandwiched between the upper end of the tank body 72 and the lid 74. Thereby, the buffer tank 70 has a sealed structure. The buffer tank 70 is integrally provided with a hollow support post 76 extending from the bottom wall of the tank body. The buffer tank 70 is attached and supported on the bottom wall 52 c of the housing 52 by a support post 76. The buffer tank 70 is installed in the housing 52 with the axis of the tank body 72 extending substantially vertically.

  On the peripheral wall of the tank main body 72, a salt water supply port 80 for supplying an electrolytic solution, a salt water outlet 82 and an inlet 84 to which a circulation pipe 56 is connected, and a drain port for draining excess (overflow) electrolyte. 85 is provided. The salt water supply port 80 is provided at a substantially intermediate portion in the axial direction of the tank main body 72, and the inflow port 84 is provided at a position substantially opposite to the salt water supply port 80. The salt water outlet 82 is provided in the lower part of the tank body 72 in the axial direction, for example, below the salt water supply port 80. Further, the drainage port 85 is provided at a position higher than the salt water supply port 80 and the inflow port 84.

  A salt water supply pipe 44 is connected to the salt water supply port 80. Salt water is supplied from the supply pump 42 to the buffer tank 70 through the salt water supply pipe 44 and the salt water supply port 80. A circulation pipe 56 is connected to the salt water outlet 82 via a joint 83. Salt water is supplied from the buffer tank 70 to the intermediate chamber (electrolyte chamber) 15 a of the electrolytic cell 20 by the circulation pump 58 via the salt water outlet 82 and the circulation pipe 56. A circulation pipe 56 is connected to the inflow port 84 via a joint 86. The salt water drained from the intermediate chamber 15 a is returned to the buffer tank 70 through the circulation pipe 56 and the inflow port 84. A drain pipe 48 is connected to the drain port 85. Surplus salt water in the buffer tank 70, that is, used salt water that has overflowed, is drained to the outside of the housing 52 through the drain port 85 and the drain pipe 48.

  The capacity of the buffer tank 70 can be set according to the consumption of salt in the electrolytic cell 20. In the present embodiment, the capacity of the buffer tank 70 is substantially the same as the capacity of the intermediate chamber 15a of the electrolytic cell 20, or is larger than the capacity of the intermediate chamber. In one example, the capacity of the buffer tank 70 is about 10 to 30 cc, preferably about 20 cc.

  As shown in FIG. 5, a sensor for detecting the level of salt water (amount of salt water), for example, a float sensor 90 is provided in the buffer tank 70. The float sensor 90 includes a pivot 92 and a columnar float 94 supported by the pivot 92 so as to be movable up and down. The pivot 92 is fixed to the lid 74 and extends from the lid 74 into the tank body 72. The pivot 92 is positioned coaxially with the tank body 72. The float 94 is engaged around the pivot 92 and is supported so as to be movable up and down along the pivot 92. The outer diameter of the float 94 is formed to be slightly smaller than the inner diameter of the tank body 72. The float 94 floats on the surface of the salt water in the tank main body 72. The float 94 moves up and down according to the liquid surface height (salt water amount) of the salt water. The float sensor 90 electrically detects the height position of the float 94 and detects the amount of salt water in the tank. The controller 24 monitors the amount of salt water in the buffer tank 70 in accordance with the detection signal from the float sensor 90. If the amount of salt water falls below a predetermined amount, for example, the amount of salt water supplied by the supply pump 42 is increased. Make adjustments. In addition, when the controller 24 detects a decrease in the amount of salt water for a predetermined time in accordance with the detection signal from the float sensor 90, the controller 24 determines that the salt water in the external tank 60 has disappeared, and stops the operation of the apparatus. Warning of replacement of external tank 60 or replenishment of salt water.

An operation of electrolyzing salt water to generate acidic water (hypochlorous acid water and hydrochloric acid) and alkaline water (sodium hydroxide) by the electrolyzed water generating apparatus 10 configured as described above will be described.
As shown in FIG. 3, the supply pump 42 and the circulation pump 58 are operated to supply salt water from the external tank 60 to the buffer tank 70 via the supply pipe 51 and the salt water supply pipe 44. By means of the circulation pump 58, salt water is supplied from the buffer tank 70 to the intermediate chamber 15a of the electrolytic cell 20 through the circulation pipe 56 to fill the intermediate chamber 15a with salt water. Further, the salt water discharged from the intermediate chamber 15 a is returned to the buffer tank 70 through the circulation pipe 56. On the other hand, simultaneously with the supply of salt water, water is supplied to the anode chamber 15b and the cathode chamber 15c by the water supply unit 30, and the anode chamber 15b and the cathode chamber 15c are filled with water. At the same time, a positive voltage and a negative voltage are applied from the power source 26 to the anode 18a and the cathode 18b, respectively.

  Chlorine ions ionized in the salt water in the intermediate chamber 15a are attracted to the anode 18a, pass through the anion exchange membrane 16a, and flow into the anode chamber 15b. Then, chlorine ions are reduced at the anode 18a to generate chlorine gas. The generated chlorine gas reacts with water in the anode chamber 15b to generate hypochlorous acid water and hydrochloric acid, that is, a halogen compound. The acidic water (hypochlorous acid water and hydrochloric acid) thus generated flows out from the anode chamber 15b to the outside of the apparatus through the first drain pipe 34a. The acidic water that has flowed out may be stored in a storage tank (not shown) or may be used as it is for disinfection.

  The sodium ions ionized in the salt water in the intermediate chamber 15a are attracted to the cathode 18b, pass through the cation exchange membrane 16b, and flow into the cathode chamber 15c. In the cathode chamber 15c, water is electrolyzed at the cathode 18b to generate hydrogen ions. The hydrogen ions receive electrons and become hydrogen gas. The generated hydrogen gas reacts with water in the cathode chamber 15c to generate a sodium hydroxide aqueous solution. The sodium hydroxide aqueous solution (alkaline water) and hydrogen gas generated in this way flow out from the cathode chamber 15c to the second drain pipe 34b, and flow out to the storage tank (not shown) through the second drain pipe 34b. (If not used, it will be discharged).

  The salt water is circulated through the intermediate chamber 15a by the circulation piping system 46, and the buffer tank through the drain port 85 and the drain piping 48 of the buffer tank 70 at an appropriate time according to the salt content consumed by electrolysis or the deterioration of the salt water quality due to pH balance fluctuation. 70 is drained. In order to make up for the consumed salt water, fresh (unused) salt water is supplied to the buffer tank 70 by the supply pump 42 and the salt water supply pipe 44 in a timely manner.

  As described above, in the three-chamber electrolytic cell 20 in which the middle chamber 15a filled with salt water at the center and the anode chamber 15b and the cathode chamber 15c filled with water on both sides thereof are arranged, the anode chamber 15b and the cathode chamber 15c include Since only the salt content consumed by electrolysis is transferred, the produced anode water (acidic water) and cathode water (alkaline water) contain little salt, and the fuel consumption efficiency of salt consumption is high. On the other hand, by circulating the salt water to the intermediate chamber 15a, the salt water pH fluctuates due to the ion outflow balance transmitted to the anode chamber 15b and the cathode chamber 15c, or hypochlorous acid generated in the anode chamber 15b is transferred to the intermediate chamber 15a. There is a possibility of diffusion. In particular, when salt water is acidified, chlorine gas is generated from the mixed hypochlorous acid, so that it is necessary to prevent leakage of chlorine gas into the housing 52.

  According to the electrolyzed water generating apparatus 10 of the present embodiment, the buffer tank 70 built in the housing 52 is separated from the external tank 60 and has a sealed structure. Therefore, leakage and diffusion of chlorine gas from the buffer tank 70 into the housing 52 and out of the housing 52 can be reliably prevented. Therefore, it is possible to obtain an electrolyzed water generating apparatus capable of suppressing the corrosion of the structure and functional parts provided in the casing 52 and capable of stable operation over a long period of time. Further, the chlorine gas accumulated in the buffer tank 70 can be discharged to the outside of the housing 52 through the drain port 85 and the drain pipe 48. Thereby, while suppressing the pressure fluctuation in the buffer tank 70, chlorine gas can be discharged | emitted safely. The buffer tank 70 has a function of draining used salt water in a timely manner. Therefore, in the three-chamber electrolyzer 20 that is strict in terms of water pressure conditions, the optimum water pressure conditions can be adjusted and controlled, and the salt water that has undergone consumption alteration can be drained in a timely manner.

  The buffer tank 70 is much smaller than the external tank 60, and is formed to have a size of 1/10 or less, for example. Therefore, when the buffer tank 70 is built in the housing 52, the apparatus main body 50 can be significantly downsized as compared with the case where the external tank 60 is built.

  From the above, according to the present embodiment, an electrolyzed water generating device that can suppress the leakage of chlorine gas and can be miniaturized is obtained.

The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements 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.
In the above-described embodiment, the electrolytic solution used may be other than salt water, and the generated electrolytic water may be electrolytic water other than hypochlorous acid water. The buffer tank 70 is not limited to a cylindrical shape, and various shapes can be selected. A vent pipe for exhausting chlorine gas in the buffer tank to the outside of the apparatus may be connected to the buffer tank. The supply amount of salt water, the capacity of the buffer tank, and the like are not limited to the above-described embodiment, and can be variously changed according to the capacity of the device.

DESCRIPTION OF SYMBOLS 10 ... Electrolyzed water production | generation apparatus, 20 ... Electrolysis tank, 15a ... Intermediate | middle chamber, 15b ... Anode chamber,
15c ... Cathode chamber, 16a ... 1st diaphragm, 16b ... 2nd diaphragm, 18a ... Anode,
18b ... cathode, 30 ... water supply unit, 40 ... electrolyte supply unit, 42 ... supply pump,
46 ... circulation piping system, 48 ... drain piping, 50 ... device main body, 52 ... housing,
56 ... circulation piping, 58 ... circulation pump, 60 ... external tank, 70 ... buffer tank,
72 ... Tank body, 74 ... Lid, 90 ... Float sensor

Claims (11)

A housing having a vent ;
An intake fan that draws outside air into the housing;
A first electrode chamber provided with a first electrode; a second electrode chamber provided with a second electrode; an intermediate chamber provided between the first electrode chamber and the second electrode chamber and containing an electrolyte; An electrolytic cell provided in the housing;
A buffer tank that is smaller than an external tank for storing the electrolyte, has a sealed structure for storing the electrolyte, and is provided in the housing;
Provided in the housing, a first pump for supplying the electrolyte solution to the buffer tank from the external tank,
An electrolyte supply unit that is provided in the housing, supplies an electrolyte solution of the buffer tank to the intermediate chamber by a second pump, and sends the electrolyte solution flowing through the intermediate chamber to the buffer tank;
A drain pipe extending from the buffer tank to the outside of the housing;
An electrolyzed water generating apparatus comprising: The buffer tank includes a tank body, a water supply port formed in the tank body and connected to the first pump via a supply pipe, and a flow connected to the second pump and the intermediate chamber via a circulation pipe. An outlet, an inlet connected to the intermediate chamber via the circulation pipe and into which the electrolyte discharged from the intermediate chamber flows, and a drain outlet for draining excess electrolyte in the tank body. The drain water generating apparatus according to claim 1 , wherein the drain pipe extends from the drain port to the outside of the housing .   The electrolyzed water generating apparatus according to claim 2, wherein the buffer tank includes a sensor that is provided in the tank main body and detects an amount of the electrolytic solution in the tank main body.   The electrolyzed water generating apparatus according to claim 3, wherein the sensor includes a float sensor provided in the tank body and having a float that floats on a surface of the electrolytic solution. Provided in the casing, supplying electrolyzed water to the first electrode chamber and the second electrode chamber of the electrolytic cell, generated water generated in the first electrode chamber, and generated generated in the second electrode chamber A water supply unit for draining water;
The electrolyzed water generating apparatus according to claim 1, wherein the buffer tank is disposed on the opposite side of the water supply unit with the electrolyzer interposed therebetween.   The water supply unit includes a water supply pipe for sending electrolyzed water to the first electrode chamber and the second electrode chamber, a first drain pipe for discharging generated water from the first electrode chamber, and generated water from the second electrode chamber. The electrolyzed water production | generation apparatus of Claim 5 provided with the 2nd drainage piping which drains water. The water supply pipe includes a first branch pipe connected to the first electrode chamber, a second branch pipe connected to the second electrode chamber, a branch from the water supply pipe, and a middle portion of the first branch pipe A third branch pipe connected,
The electrolyzed water generating apparatus according to claim 6, wherein the water supply unit includes a valve that is provided in the third branch pipe and opens and closes the third branch pipe.   A power source for applying a voltage to the first electrode and the second electrode, a controller for controlling the power source, the first pump, and the second pump, and a control box provided in the casing and housing the power source and the controller The electrolyzed water generating apparatus according to claim 1, further comprising: a fan that takes in air from outside the housing and blows air into the control box.   9. The electrolyzed water generating device according to claim 1, wherein a capacity of the buffer tank is equal to or greater than or equal to a capacity of the intermediate chamber.   10. The electrolyzed water generating apparatus according to claim 1, wherein a capacity of the buffer tank is 1/10 or less of a capacity of the external tank. A housing,
A first electrode chamber provided with a first electrode; a second electrode chamber provided with a second electrode; an intermediate chamber provided between the first electrode chamber and the second electrode chamber and containing an electrolyte; An electrolytic cell provided in the housing;
A buffer tank that is smaller than an external tank for storing the electrolyte, has a sealed structure for storing the electrolyte, and is provided in the housing;
A first pump provided in the housing for supplying an electrolyte from the external tank to the buffer tank;
An electrolyte supply unit that is provided in the housing, supplies an electrolyte solution of the buffer tank to the intermediate chamber by a second pump, and sends the electrolyte solution flowing through the intermediate chamber to the buffer tank;
Provided in the casing, supplying electrolyzed water to the first electrode chamber and the second electrode chamber of the electrolytic cell, generated water generated in the first electrode chamber, and generated generated in the second electrode chamber A water supply section for draining water;
With
The water supply section includes a first branch pipe connected to the first electrode chamber and a second branch pipe connected to the second electrode chamber, and the first water supply section is connected to the first electrode chamber and the second electrode chamber. A water supply pipe for sending electrolyzed water;
A third branch pipe branched from the water supply pipe and connected to a middle portion of the first branch pipe;
An electrolyzed water generating device, comprising: a valve provided in the third branch pipe and opening and closing the third branch pipe.

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