JP2021188065A - Electrolytic water generating device and hypochlorous acid water generating method - Google Patents

Abstract

To provide a technique with which hypochlorous acid water can be easily generated even in a general household etc.SOLUTION: An electrolytic water generating device 1 comprises: an electrolytic tank 2 for electrolyzing water; a diaphragm 3 for partitioning the inside of the electrolytic tank 2 into a first chamber 21 and a second chamber 22; a first electrode pair 4 for generating primary electrolytic water; and a second electrode pair 5 for generating secondary electrolytic water. The first electrode pair 4, including a first cathode feeding plate 41 arranged in the first chamber 21 and a first anode feeding plate 42 arranged in the second chamber 22, electrolyzes water supplied to the first chamber 21 and the second chamber 22. The second electrode pair 5 is arranged in the second chamber 22, and electrolyzes the primary electrolytic water generated in the second chamber 22.SELECTED DRAWING: Figure 2

Description

The present invention relates to a technique for producing hypochlorite water by electrolysis.

Conventionally, various techniques for producing hypochlorite water by electrolysis have been proposed (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2007-301541

In the apparatus disclosed in Patent Document 1, hydrochloric acid is electrolyzed in a diaphragmless electrolytic cell, and the generated electrolytic solution is diluted with water to make slightly acidic electrolyzed water. However, hydrochloric acid used for electrolysis is difficult to handle and is not suitable for general household use.

The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a technique capable of easily producing hypochlorite water even in ordinary households and the like.

The first invention of the present invention is an electrolytic water generator, which comprises an electrolytic tank for electrolyzing water, a diaphragm for partitioning the inside of the electrolytic tank into a first chamber and a second chamber, and the above-mentioned. By including the first cathode feeding plate arranged in the first chamber and the first anode feeding plate arranged in the second chamber, and electrolyzing the water supplied to the first chamber and the second chamber. The primary electrolyzed water including a first electrode pair for producing the primary electrolyzed water, a second cathode feeding plate and a second anode feeding plate arranged in the second chamber, and the primary electrolyzed water generated in the second chamber. The electrode area of the first cathode feeding plate and the electrode area of the first anode feeding plate include the second electrode pair for generating secondary electrolyzed water by electrolyzing the second cathode feeding plate. It is larger than either the electrode area of the plate or the electrode area of the second anode feeding plate.

The second invention of the present invention is an electrolytic water generator, which comprises an electrolytic tank for electrolyzing water, a diaphragm for partitioning the inside of the electrolytic tank into a first chamber and a second chamber, and the above-mentioned. By including the first cathode feeding plate arranged in the first chamber and the first anode feeding plate arranged in the second chamber, and electrolyzing the water supplied to the first chamber and the second chamber. The primary electrolyzed water including a first electrode pair for producing the primary electrolyzed water, a second cathode feeding plate and a second anode feeding plate arranged in the second chamber, and the primary electrolyzed water generated in the second chamber. The height of the first cathode feeding plate and the height of the first anode feeding plate include the second electrode pair for generating the secondary electrolyzed water by electrolyzing the second cathode feeding plate. It is larger than either the height of the plate or the height of the second anode feeding plate.

The third invention of the present invention is an electrolytic water generator, which comprises an electrolytic tank for electrolyzing water, a diaphragm for partitioning the inside of the electrolytic tank into a first chamber and a second chamber, and the above-mentioned. By including the first cathode feeding plate arranged in the first chamber and the first anode feeding plate arranged in the second chamber, and electrolyzing the water supplied to the first chamber and the second chamber. The primary electrolyzed water including a first electrode pair for producing the primary electrolyzed water, a second cathode feeding plate and a second anode feeding plate arranged in the second chamber, and the primary electrolyzed water generated in the second chamber. The first anode feeding plate, the second cathode feeding plate, and the second anode feeding plate include a second electrode pair for generating secondary electrolyzed water by electrolyzing. They are arranged so as to intersect in a T shape.

In the electrolyzed water generator according to the third aspect of the present invention, the electrolytic cell has a spout on the opposite side of the first chamber for taking out the secondary electrolyzed water from the second chamber, and the pouring. It is desirable that the mouth is arranged on an extended surface of the second cathode feeding plate and the second anode feeding plate.

The fourth invention of the present invention is an electrolytic water generator, which comprises an electrolytic tank for electrolyzing water, a diaphragm for partitioning the inside of the electrolytic tank into a first chamber and a second chamber, and the above-mentioned. By including the first cathode feeding plate arranged in the first chamber and the first anode feeding plate arranged in the second chamber, and electrolyzing the water supplied to the first chamber and the second chamber. The secondary electrolytic water is generated by electrolyzing the first electrode pair for producing the primary electrolytic water and the primary electrolytic water arranged in the second chamber and generated in the second chamber. A second electrode pair for the purpose and a first partition wall which is connected to the diaphragm and separates the first chamber and the second chamber are included, and the first partition wall is between the first chamber and the second chamber. A check valve is provided to limit the movement of water in the room, and the check valve allows the inflow of the water from the second chamber to the first chamber, and the check valve is generated in the first chamber. The next electrolyzed water is prevented from flowing out to the second chamber.

In the electrolyzed water generator according to the present invention, the second chamber is a dissolution chamber for producing an aqueous chloride solution, and an electrolysis chamber for performing electrolysis by the first anode feeding plate and the second electrode pair. It is desirable that the second partition wall further includes a second partition wall for partitioning into the above, and the second partition wall is formed with a through hole that allows water to flow between the dissolution chamber and the electrolysis chamber.

In the electrolyzed water generator according to the present invention, the electrolytic cell has a discharge port for discharging the primary electrolyzed water generated in the first chamber, and the discharge port is the first in a plan view. It is desirable to open on the opposite side of the two rooms.

The fifth invention of the present invention is a method for producing hypochlorite water, which is produced in a first step of producing acidic primary electrolyzed water by electrolyzing a chloride aqueous solution through a diaphragm, and in the first step. A secondary electrolyzed water is generated by electrolyzing the primary electrolyzed water that is convected through the second step and the primary electrolyzed water that is convected through the second step without a diaphragm, and hypochlorite having an appropriate concentration. Includes a third step of obtaining acid water.

In the method for producing hypochlorite water according to the present invention, it is desirable to include a fourth step of convection of the secondary electrolyzed water generated in the third step.

In the electrolyzed water generator of the first to fourth inventions, the acidic primary electrolyzed water is generated in the second chamber by electrolysis with a diaphragm using the first electrode pair. Then, the secondary electrolyzed water is generated in the second chamber by electrolysis without a diaphragm using the second electrode pair. The secondary electrolyzed water obtained in the second chamber is also referred to as hypochlorite water and is effective for sterilization and deodorization. Therefore, hypochlorite water can be easily obtained without using hydrochloric acid or the like.

In the hypochlorite water generation method of the fifth invention, the acidic primary electrolyzed water is produced by the septal electrolysis in the first step. Then, in the third step, the primary electrolyzed water is electrolyzed without a diaphragm, so that the secondary electrolyzed water is generated. Therefore, the hypochlorite water can be easily obtained without using hydrochloric acid or the like.

It is a perspective view which shows the schematic structure of the electrolyzed water generation apparatus of this invention. It is sectional drawing which shows the structure of the electrolyzed water generation apparatus of FIG. It is sectional drawing which shows the structure of the electrolyzed water generation apparatus of FIG. It is a perspective view which shows the 1st electrode pair and the 2nd electrode pair which perform the primary electrolysis and the secondary electrolysis. It is a top view which shows the arrangement of the 1st electrode pair and the 2nd electrode pair. It is sectional drawing of the electrolytic cell which shows the saline solution production process in the hypochlorite water generation method of this invention. Following FIG. 6, it is sectional drawing of the electrolytic cell which shows the saline solution generation process. It is sectional drawing of the electrolytic cell which shows the electrolysis process in the hypochlorite water generation method of this invention. It is sectional drawing of the electrolytic cell which shows the water intake process in the hypochlorite water generation method of this invention. It is sectional drawing of the electrolytic cell which finished the water intake process of FIG. It is sectional drawing of the electrolytic cell which shows the drainage process in the hypochlorite water generation method of this invention. It is a perspective view which shows the schematic structure of the modification of the electrolyzed water generator of this invention. It is sectional drawing which shows the structure of the electrolyzed water generation apparatus of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the appearance of the electrolyzed water generator 1 of the present embodiment. FIG. 2 is a cross-sectional view showing the configuration of the electrolyzed water generator 1.

The electrolyzed water generator 1 includes an electrolytic cell 2, a diaphragm 3, a first electrode pair 4, and a second electrode pair 5.

The electrolytic cell 2 houses the diaphragm 3, the first electrode pair 4 and the second electrode pair 5 inside the chamber surrounded by the bottom wall and the side wall. Water to be electrolyzed is supplied to the electrolytic cell 2. Water is electrolyzed in the electrolytic cell 2.

The water supplied to the electrolytic cell 2 is preferably a chloride aqueous solution. As the chloride, for example, salt (sodium chloride), potassium chloride and the like are used. Chloride may be produced in the electrolytic cell 2. For example, a chloride aqueous solution is generated by putting chloride into an electrolytic cell 2 filled with water such as tap water and stirring it. Hereinafter, the form in which salt is used as the chloride will be described, but the same applies to other chlorides.

The diaphragm 3 divides the inside of the electrolytic cell 2 into a first chamber 21 and a second chamber 22. For the diaphragm 3, for example, a polytetrafluoroethylene (PTFE) hydrophilic membrane is used. The diaphragm 3 is supported on both sides of the first chamber 21 side and the second chamber 22 side by, for example, a holder 31 formed in a grid pattern.

The first electrode pair 4 includes a first cathode feeding plate 41 arranged in the first chamber 21 and a first anode feeding plate 42 arranged in the second chamber 22. A feeding terminal for applying a DC voltage is connected to the first cathode feeding plate 41 and the first anode feeding plate 42. The feeding terminal extends below the first cathode feeding plate 41 and the first anode feeding plate 42. The diaphragm 3 is arranged between the first cathode feeding plate 41 and the first anode feeding plate 42. The first cathode feeding plate 41, the first anode feeding plate 42, and the diaphragm 3 are arranged in parallel.

The first electrode pair 4 produces primary electrolyzed water by electrolyzing the water supplied to the first chamber 21 and the second chamber 22 (hereinafter, the electrolysis by the first electrode pair 4 is referred to as primary electrolysis. do). Since the diaphragm 3 is arranged between the first cathode feeding plate 41 and the first anode feeding plate 42, the electrolysis by the first electrode pair 4 is septal electrolysis. By diaphragm electrolysis using the first electrode pair 4, alkaline primary electrolyzed water is generated in the first chamber 21, and acidic primary electrolyzed water is produced in the second chamber 22.

The second electrode pair 5 is arranged in the second chamber 22. In the electrolyzed water generator 1 of the present embodiment, the second electrode pair 5 includes the second cathode feeding plate 51 and the second anode feeding plate 52. The second cathode feeding plate 51 and the second anode feeding plate 52 are arranged in the second chamber 22. A feeding terminal for applying a DC voltage is connected to the second cathode feeding plate 51 and the second anode feeding plate 52. The feeding terminal extends below the second cathode feeding plate 51 and the second anode feeding plate 52. The second cathode feeding plate 51 and the second anode feeding plate 52 are arranged in parallel.

The second electrode pair 5 generates secondary electrolyzed water by electrolyzing the acidic primary electrolyzed water existing in the second chamber 22 (hereinafter, the electrolysis by the second electrode pair 5 is referred to as secondary electrolysis. do). The secondary electrolysis by the second electrode pair 5 may proceed at the same time as the primary electrolysis by the first electrode pair 4.

In addition to the above configuration, the electrolyzed water generator 1 has an electrolysis control unit (not shown) for supplying an electrolysis current to the first electrode pair 4 and the second electrode pair 5. The electrolytic currents supplied to the first electrode pair 4 and the second electrode pair 5 may be the same or different. The electrolytic control unit feedback-controls the electrolytic voltage applied to the first electrode pair 4 and the second electrode pair 5 so that a desired electrolytic current is supplied to the first electrode pair 4 and the second electrode pair 5. The electrolysis control unit of the present embodiment is arranged below the electrolytic cell 2 together with the power supply circuit.

Since no diaphragm is arranged between the second cathode feeding plate 51 and the second anode feeding plate 52, the electrolysis by the second electrode pair 5 is septal electrolysis. The secondary electrolyzed water obtained in the second chamber is also referred to as hypochlorous acid (HOCL) water and is effective for sterilization and deodorization. Therefore, in the present electrolyzed water generator 1, hypochlorite water can be easily obtained only with tap water and salt without using hydrochloric acid or the like.

The pH of the hypochlorite water produced by the present electrolyzed water generator 1 depends on the electrolytic strength of the first electrode pair 4, that is, the pH of the primary electrolyzed water. The slightly acidic hypochlorite water having a pH of 5 to 6.5 that can be produced by the present electrolyzed water generator 1 has a strong bactericidal activity and is expected to have an effect of removing pathogens and viruses.

It is desirable that the volume of the second chamber 22 is larger than the volume of the first chamber 21. This makes it possible to generate a large amount of hypochlorite water in a short time.

In order to efficiently perform electrolysis at the same electrolytic voltage, it is effective to reduce the electric resistance by a method such as narrowing the space between the plates. However, since the diaphragm 3 is arranged between the first cathode feeding plate 41 and the first anode feeding plate 42, the distance between the first cathode feeding plate 41 and the first anode feeding plate 42 is sufficiently narrowed. Can be difficult.

Therefore, in the present embodiment, it is desirable that the electrode areas of the first cathode feeding plate 41 and the first anode feeding plate 42 are larger than the electrode areas of the second cathode feeding plate 51 and the second anode feeding plate 52. As a result, the electric resistance between the first cathode feeding plate 41 and the first anode feeding plate 42 is easily reduced, and the electrolysis efficiency in the primary electrolysis is improved.

Further, it is desirable that the heights of the first cathode feeding plate 41 and the first anode feeding plate 42 are larger than the heights of the second cathode feeding plate 51 and the second anode feeding plate 52. Thereby, the electrode areas of the first cathode feeding plate 41 and the first anode feeding plate 42 can be easily set to be large. Further, it is possible to easily secure a large space above the second cathode feeding plate 51 and the second anode feeding plate 52. The above space is suitable for stirring a saline solution.

FIG. 4 shows a first electrode pair 4 and a second electrode pair 5 during performing primary electrolysis and secondary electrolysis.
Oxygen gas is generated from the surface of the first anode feeding plate 42 by the primary electrolysis, and moves upward as bubbles. Similarly, hydrogen gas is generated from the surface of the second cathode feeding plate 51 and oxygen gas is generated from the surface of the second anode feeding plate 52 by the secondary electrolysis, and they move upward as bubbles.

During the movement of these oxygen gas and hydrogen gas, the surrounding water is caught and convection occurs in the second chamber 22 (similarly, convection also occurs in the first chamber 21). By such convection, the water in the second chamber 22 and the first chamber 21 is diffused, and the secondary electrolysis and the primary electrolysis are promoted. Therefore, it is desirable that the first cathode feeding plate 41, the first anode feeding plate 42, the second cathode feeding plate 51, and the second anode feeding plate 52 are supported by the housing of the electrolytic cell 2 in an upright posture.

FIG. 5 is a plan view showing the arrangement of the first electrode pair 4 and the second electrode pair 5. It is desirable that the first cathode feeding plate 41 and the first anode feeding plate 42 and the second cathode feeding plate 51 and the second anode feeding plate 52 are arranged so as to be orthogonal to each other in a plan view. This causes complex convection in the second chamber 22 and promotes the diffusion of water. "To be orthogonal" means that the angle formed by the first anode feeding plate 42 and the second cathode feeding plate 51 and the angle formed by the first anode feeding plate 42 and the second anode feeding plate 52 are 90 °. Not limited to the form, in view of the above-mentioned action, for example, it is intended to allow an error of ± 10 ° (preferably ± 5 °).

Further, in the present embodiment, the first electrode pair 4 and the second electrode pair 5 are arranged in a T shape in a plan view. With such an arrangement, the diffusion of the primary electrolyzed water to the second cathode feeding plate 51 and the second anode feeding plate 52 becomes uniform, and the production of hypochlorite water by the secondary electrolysis is promoted.

In the present electrolytic cell 2, the upper end portion of the second chamber 22 is opened, and a salt inlet 25 for charging salt into the second chamber 22 is configured. This makes it easy to prepare the saline solution in the second chamber 22.

The second chamber 22 is provided with a partition wall (second partition wall) 26. The partition wall 26 divides the second chamber 22 into a dissolution chamber 33 for producing a saline solution and an electrolytic chamber 34 for performing electrolysis by the first anode feeding plate 42 and the second electrode pair 5. The partition wall 26 covers the first anode feeding plate 42 and the second electrode pair 5 and protects the first anode feeding plate 42 and the second electrode pair 5 when producing a saline solution.

The partition wall 26 is appropriately provided with a through hole 26a so that water can flow between the dissolution chamber and the electrolytic chamber. As a result, the saline solution spreads around the first anode feeding plate 42 and the second electrode pair 5.

It is desirable that the electrolytic cell 2 has a partition wall (first partition wall) 27 that separates the first chamber 21 and the second chamber 22. In such a configuration, the diaphragm 3 is provided on a part of the partition wall 27. The partition wall 27 separates the alkaline primary electrolyzed water and the acidic hypochlorite water. In this embodiment, the partition wall 26 and the partition wall 27 are integrally formed.

It is desirable that the partition wall 27 be provided with a check valve 28 that limits the movement of water between the first chamber 21 and the second chamber 22. The check valve 28 allows the inflow of water from the second chamber 22 to the first chamber 21 and prevents the outflow of the primary electrolyzed water generated in the first chamber 21 to the second chamber 22. For example, a duckbill valve, an umbrella valve, or the like is applied to the check valve 28. The partition wall 27 and the check valve 28 prevent the alkaline primary electrolyzed water from being mixed with the acidic hypochlorite water.

In the present electrolytic cell 2, it is desirable that a spout 29 for taking out the secondary electrolyzed water from the second chamber 22 is provided on the opposite side of the first chamber 21. The spout 29 is an upper end portion of the second chamber 22 and is arranged on an extended surface of the second cathode feeding plate 51 and the second anode feeding plate 52. In such a configuration, the hypochlorite water generated in the second chamber 22 is not blocked by the second cathode feeding plate 51 and the second anode feeding plate 52, and is transferred from the spout 29 to another container or the like. Easy to transfer.

When the electrolytic cell 2 is tilted when the secondary electrolyzed water is taken out from the second chamber 22, the partition wall 27 prevents the alkaline primary electrolyzed water generated in the first chamber 21 from flowing out to the second chamber 22. It is desirable that it is configured as follows. For example, it is desirable that the partition wall 27 extends above the upper end of the second chamber 22. Further, it is desirable that the upper end of the partition wall 27 extends to the side opposite to the second chamber 22.

It is desirable that the electrolytic cell 2 has a discharge port 35 for discharging the primary electrolyzed water generated in the first chamber 21. The discharge port 35 is open on the side opposite to the second chamber 22 in a plan view. With such a configuration, the alkaline primary electrolyzed water generated in the first chamber 21 can be easily separated from the hypochlorite water and discharged.

6 to 11 show a hypochlorite water generation method using the electrolyzed water generation device 1. The hypochlorite water generation method includes a saline solution generation step, an electrolysis step, a water intake step, and a drainage step.

6 and 7 show the saline solution generation process. In the step shown in FIG. 6, raw water before electrolysis is supplied from the salt inlet 25 to the second chamber 22. Tap water is generally used as the raw water, but in addition, for example, pure water, well water, groundwater and the like can be used. In this step, raw water flows from the second chamber 22 to the first chamber 21 via the check valve 28. The water level of the second room 22 and the water level of the first room 21 become equal.

In the step shown in FIG. 7, salt is charged into the second chamber 22 from the salt charging port 25. Then, a saline solution is generated by stirring the water in the second chamber 22. The saline solution generation step may be executed at the same time as the electrolysis step.

FIG. 8 shows an electrolysis process. In the electrolysis step, the first step S1 for generating the primary electrolyzed water using the first electrode pair 4, the second step S2 for convection of the primary electrolyzed water, and the secondary electrolyzed water using the second electrode pair 5. The third step S3 is included in which the hypochlorite water is obtained.

In the first step S1, the primary electrolyzed water is produced by performing septal electrolysis of the saline solution on the first electrode pair 4. In the inside of the electrolytic cell 2, the first chamber 21 on the first cathode feeding plate 41 side and the second chamber 22 on the first anode feeding plate 42 side are separated by the diaphragm 3, so that in the first step S1, the first step is performed. Alkaline primary electrolyzed water is produced in the first chamber 21, and acidic primary electrolyzed water is produced in the second chamber 22.

In the second step S2, the primary electrolyzed water generated in the first step S1 is convected. That is, in the first chamber 21, alkaline primary electrolyzed water is convection, and in the second chamber 22, acidic primary electrolyzed water is convection.

In the third step S3, the secondary electrolyzed water is generated by electrolyzing the acidic primary electrolyzed water convection in the second chamber 22 with the second electrode pair 5 without a diaphragm. Therefore, hypochlorite water having an appropriate concentration can be easily obtained without using hydrochloric acid or the like.

The first step S1 and the second step S2 and the third step S3 are preferably executed at the same time, but may be executed alternately. Further, the third step S3 may be started first, then the first step S1 and the second step S2 may be started, and the first step S1 to the third step S3 may be continued at the same time.

The hydrogen gas and oxygen gas generated by the primary electrolysis in the first step S1 and the secondary electrolysis in the third step S3 are discharged to the outside of the electrolytic cell 2 from the salt input port 25 and the discharge port 35.

On the other hand, the water in the first chamber 21 and the second chamber 22 is consumed by the primary electrolysis in the first step S1 and the secondary electrolysis in the third step S3. In the electrolytic cell 2 of the present embodiment, the volume of the second chamber 22 is larger than the volume of the first chamber 21, so that the water level of the first chamber 21 is higher than the water level of the second chamber 22 as the electrolysis process progresses. May be lower. In this case, since water flows from the second chamber 22 to the first chamber 21 via the check valve 28, the water level of the second chamber 22 and the water level of the first chamber 21 become equal. On the contrary, when the water level of the second chamber 22 is lower than the water level of the first chamber 21, no movement of water occurs through the check valve 28.

It is desirable that the present hypochlorite water generation method includes a fourth step S4 in which the secondary electrolyzed water generated in the third step S3 is convected. By the second step S2 and the fourth step S4, complicated convection is generated in the second chamber 22 and the diffusion of water is promoted, so that the hypochlorite water is efficiently generated.

FIG. 9 shows the water intake process. In the water intake step, by tilting the electrolytic cell 2, the hypochlorite water generated in the second chamber 22 is poured out from the spout 29. At this time, the outflow of the alkaline primary electrolyzed water generated in the first chamber 21 is blocked by the partition wall 27.

FIG. 10 shows an upright electrolytic cell 2 after completing the water intake process. Even in this state, the check valve 28 works to keep the alkaline primary electrolyzed water in the first chamber 21 without moving to the second chamber 22.

FIG. 11 shows a drainage process. In the drainage step, the electrolytic cell 2 is tilted in the direction opposite to that in FIG. 9, and the alkaline primary electrolyzed water in the first chamber 21 is discharged from the discharge port 35.

12 and 13 are perspective views of the electrolyzed water generator 1A, which is a modification of the electrolyzed water generator 1 of FIGS. 1 to 11. The above-described configuration of the electrolyzed water generator 1 may be adopted for the portion of the electrolyzed water generator 1A not described below.

The electrolyzed water generator 1A includes an electrolytic cell 2A, a diaphragm 3A, a first electrode pair 4A, and a second electrode pair 5A.

The electrolytic cell 2A houses the diaphragm 3A, the first electrode pair 4A and the second electrode pair 5A. Water to be electrolyzed is supplied to the electrolytic cell 2A.

The diaphragm 3A divides the inside of the electrolytic cell 2A into a first chamber 21A and a second chamber 22A. For the diaphragm 3A, for example, a polytetrafluoroethylene (PTFE) hydrophilic membrane is used. The diaphragm 3A is supported on both sides of the first chamber 21A side and the second chamber 22A side by, for example, a holder 31A formed in a grid pattern.

The first electrode pair 4A includes a first cathode feeding plate 41A arranged in the first chamber 21A and a first anode feeding plate 42A arranged in the second chamber 22A. The diaphragm 3A is arranged between the first cathode feeding plate 41A and the first anode feeding plate 42A.

A feeding terminal for applying a DC voltage is connected to the first cathode feeding plate 41A and the first anode feeding plate 42A. The feeding terminal of the electrolytic cell 2 extends above the first cathode feeding plate 41A and the first anode feeding plate 42A.

The first electrode pair 4A produces primary electrolyzed water by electrolyzing the water supplied to the first chamber 21A and the second chamber 22A. By diaphragm electrolysis using the first electrode pair 4A, alkaline primary electrolyzed water is produced in the first chamber 21A, and acidic primary electrolyzed water is produced in the second chamber 22A.

The second electrode pair 5A is arranged in the second chamber 22A. In the electrolyzed water generator 1A of the present embodiment, the second electrode pair 5A includes a second cathode feeding plate 51A and a first anode feeding plate 42A. That is, the first anode feeding plate 42A of the first electrode pair 4A also functions as the anode feeding plate of the second electrode pair 5A. The second cathode feeding plate 51A is arranged so as to face the first anode feeding plate 42A.

A feeding terminal for applying a DC voltage is connected to the second cathode feeding plate 51A between the second cathode feeding plate 51A and the first anode feeding plate 42A. The feeding terminal extends above the second cathode feeding plate 51A.

The second electrode pair 5A produces the secondary electrolyzed water by electrolyzing the acidic primary electrolyzed water existing in the second chamber 22A.

A support member 24A for suspending and supporting the first electrode pair 4A and the second electrode pair 5A is provided on the upper part of the electrolytic cell 2A. The first electrode pair 4A and the second electrode pair 5A receive an electrolysis current from the electrolysis control unit.

Since no diaphragm is arranged between the second cathode feeding plate 51A and the first anode feeding plate 42A, the electrolysis by the second electrode pair 5 is septal electrolysis. Therefore, even in the present electrolyzed water generator 1A, hypochlorite water can be easily obtained only with tap water and salt without using hydrochloric acid or the like.

The electrode areas of the first cathode feeding plate 41A, the first anode feeding plate 42A, and the second cathode feeding plate 51A are the same. Further, the heights of the first cathode feeding plate 41A, the first anode feeding plate 42A, and the second cathode feeding plate 51A are the same, respectively. The electrode area of the second cathode feeding plate 51A may be smaller than the electrode area of the first anode feeding plate 42A, and the height of the second cathode feeding plate 51A is lower than the height of the first anode feeding plate 42A. May be good.

Although the electrolyzed water generator 1 and the like and the hypochlorite water generation method of the present invention have been described in detail above, the present invention is not limited to the above specific embodiment and may be changed to various embodiments. Will be implemented.

For example, the electrolytic water generator 1 and the like have at least an electrolytic tank 2 for electrolyzing water, a diaphragm 3 for partitioning the inside of the electrolytic tank 2 into a first chamber 21 and a second chamber 22, and a first. To electrolyze the water supplied to the first chamber 21 and the second chamber 22 including the first cathode feeding plate 41 arranged in the first chamber 21 and the first anode feeding plate 42 arranged in the second chamber 22. The secondary electrolytic water is generated by electrolyzing the primary electrolytic water arranged in the second chamber 22 and the primary electrolytic water generated in the second chamber 22 and the first electrode pair 4 for generating the primary electrolytic water. It suffices to include a second electrode pair 5 for this purpose.

Further, in the hypochlorite water generation method, at least, the first step of producing acidic primary electrolyzed water by electrolyzing the saline solution with a diaphragm and the primary electrolyzed water generated in the first step are absent. It may include a second step of producing secondary electrolyzed water by electrolyzing the diaphragm and obtaining hypochlorite water.

1 Electrolyzed water generator 2 Electrolytic cell 3 Anode 4 1st electrode pair 5 2nd electrode pair 21 1st chamber 22 2nd chamber 25 Salt inlet 26 Cover member 27 Partition 28 Check valve 29 Spout 35 Outlet 41 1st Cathode feeding plate 42 1st anode feeding plate 51 2nd cathode feeding plate 52 2nd anode feeding plate S1 1st step S2 2nd step

Claims (9)

It is an electrolyzed water generator
An electrolytic cell for electrolyzing water and
A diaphragm for partitioning the inside of the electrolytic cell into a first chamber and a second chamber,
To electrolyze the water supplied to the first chamber and the second chamber, including the first cathode feeding plate arranged in the first chamber and the first anode feeding plate arranged in the second chamber. The first electrode pair for producing primary electrolyzed water and
To generate secondary electrolyzed water by electrolyzing the primary electrolyzed water generated in the second chamber, which includes a second cathode feeding plate and a second anode feeding plate arranged in the second chamber. Including the second electrode pair of
The electrode area of the first cathode feeding plate and the electrode area of the first anode feeding plate are larger than both the electrode area of the second cathode feeding plate and the electrode area of the second anode feeding plate.
Electrolyzed water generator. It is an electrolyzed water generator
An electrolytic cell for electrolyzing water and
A diaphragm for partitioning the inside of the electrolytic cell into a first chamber and a second chamber,
To electrolyze the water supplied to the first chamber and the second chamber, including the first cathode feeding plate arranged in the first chamber and the first anode feeding plate arranged in the second chamber. The first electrode pair for producing primary electrolyzed water and
To generate secondary electrolyzed water by electrolyzing the primary electrolyzed water generated in the second chamber, which includes a second cathode feeding plate and a second anode feeding plate arranged in the second chamber. Including the second electrode pair of
The height of the first cathode feeding plate and the height of the first anode feeding plate are larger than both the height of the second cathode feeding plate and the height of the second anode feeding plate.
Electrolyzed water generator. It is an electrolyzed water generator
An electrolytic cell for electrolyzing water and
A diaphragm for partitioning the inside of the electrolytic cell into a first chamber and a second chamber,
To electrolyze the water supplied to the first chamber and the second chamber, including the first cathode feeding plate arranged in the first chamber and the first anode feeding plate arranged in the second chamber. The first electrode pair for producing primary electrolyzed water and
To generate secondary electrolyzed water by electrolyzing the primary electrolyzed water generated in the second chamber, which includes a second cathode feeding plate and a second anode feeding plate arranged in the second chamber. Including the second electrode pair of
The first anode feeding plate, the second cathode feeding plate, and the second anode feeding plate are arranged so as to intersect each other in a T shape in a plan view.
Electrolyzed water generator. The electrolytic cell has a spout on the opposite side of the first chamber for taking out the secondary electrolyzed water from the second chamber.
The electrolyzed water generator according to claim 3, wherein the spout is arranged on an extended surface of the second cathode feeding plate and the second anode feeding plate. It is an electrolyzed water generator
An electrolytic cell for electrolyzing water and
A diaphragm for partitioning the inside of the electrolytic cell into a first chamber and a second chamber,
To electrolyze the water supplied to the first chamber and the second chamber, including the first cathode feeding plate arranged in the first chamber and the first anode feeding plate arranged in the second chamber. The first electrode pair for producing primary electrolyzed water and
A second electrode pair for producing secondary electrolyzed water by electrolyzing the primary electrolyzed water arranged in the second chamber and generated in the second chamber.
Includes a first septum that connects to the diaphragm and separates the first chamber from the second chamber.
The first partition wall is provided with a check valve that limits the movement of water between the first chamber and the second chamber.
The check valve allows the inflow of the water from the second chamber to the first chamber and prevents the outflow of the primary electrolyzed water generated in the first chamber to the second chamber.
Electrolyzed water generator. A second partition wall for partitioning the second chamber into a dissolution chamber for producing an aqueous chloride solution and an electrolytic chamber for performing electrolysis by the first anode feeding plate and the second electrode pair is further provided. Including,
The electrolyzed water generating apparatus according to any one of claims 1 to 5, wherein the second partition wall is formed with a through hole that allows water to flow between the melting chamber and the electrolyzing chamber. The electrolytic cell has a discharge port for discharging the primary electrolyzed water generated in the first chamber, and the discharge port opens on a side opposite to the second chamber in a plan view. Item 6. The electrolyzed water generator according to any one of Items 1 to 6. Hypochlorite water generation method
The first step of producing acidic primary electrolyzed water by electrolyzing the chloride aqueous solution through a septum,
The second step of convection of the primary electrolyzed water generated in the first step and
The primary electrolyzed water convected through the second step is electrolyzed without a diaphragm to generate a secondary electrolyzed water, which comprises a third step of obtaining a hypochlorite water having an appropriate concentration.
Hypochlorite water generation method. The method for producing hypochlorite water according to claim 8, further comprising a fourth step of convection of the secondary electrolyzed water generated in the third step.

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