WO2017010372A1

WO2017010372A1 - Electrolytic cell and electrolyzed water generation device

Info

Publication number: WO2017010372A1
Application number: PCT/JP2016/070001
Authority: WO
Inventors: 孝士橘
Original assignee: 株式会社日本トリム
Priority date: 2015-07-14
Filing date: 2016-07-06
Publication date: 2017-01-19
Also published as: JP6190426B2; JP2017018915A

Abstract

This electrolyzed water generation device 1 is provided with: an electrolytic cell 4 in which an electrolysis chamber 40, to which electrolyzed water is supplied, is formed; an anode feeder 41 and cathode feeder 42 that are arranged facing each other in the electrolysis chamber 40; and a diaphragm 43 that divides the electrolysis chamber 40 into an anode chamber 40A and cathode chamber 40B. The anode feeder 41 and cathode feeder 42 are provided with conductive auxiliary bodies 47, 48 which are conductive. Consequently, current supplied to the anode feeder 41 and cathode feeder 42 is distributed to conductive auxiliary body 47 or 48, and voltage drop in the anode feeder 41 and cathode feeder 42 is suppressed. Due to this, the distribution of electrolysis voltage in the anode feeder 41 and cathode feeder 21 is made uniform, and the distribution of generated hydrogen gas is made uniform. Consequently, hydrogen gas dissolves efficiently in the electrolyzed water throughout the entire electrolytic cell 4.

Description

Electrolysis tank and electrolyzed water generator

The present invention relates to an electrolytic cell and an electrolyzed water generating apparatus for electrolyzing water to generate electrolytic hydrogen water.

2. Description of the Related Art Conventionally, an electrolyzed water generating apparatus that includes an electrolyzer having an anode chamber and a cathode chamber partitioned by a diaphragm and electrolyzes raw water such as tap water introduced into the electrolyzer to generate electrolyzed hydrogen water is known. (For example, refer to Patent Document 1).

Electrolytic hydrogen water generated in the cathode chamber of the electrolyzed water generator is expected to exhibit an excellent effect in improving gastrointestinal symptoms. In recent years, electrolytic hydrogen water in which hydrogen gas generated in the cathode chamber by the electrolysis is dissolved has been attracting attention as being suitable for removal of active oxygen.

Japanese Patent No. 569724

In the electrolyzed water generating apparatus described in Patent Document 1, the first convex portion disposed on the inner surface of the first case piece of the electrolytic cell is referred to as an anode side feeder (hereinafter referred to as “anode feeder”). And the second convex portion disposed on the inner surface of the second case piece comes into contact with a power supply body on the cathode side (hereinafter sometimes referred to as “cathode power supply body”). The first convex portion and the second convex portion sandwich the laminate composed of the anode power feeder, the diaphragm, and the cathode power feeder. The anode power supply body and the cathode power supply body, which are arranged to face each other across the diaphragm, are provided with power supply terminals for applying a DC electrolytic voltage.

Incidentally, in order to increase the dissolved hydrogen concentration in the electrolytic hydrogen water, it is necessary to increase the amount of hydrogen gas generated in the electrolytic bath and to efficiently dissolve the generated hydrogen gas in the electrolytic water. In order to efficiently dissolve the hydrogen gas in the electrolyzed water, it is important to generate the hydrogen gas uniformly throughout the electrolytic cell.

The amount of hydrogen gas generated depends on the electrolysis current supplied to each power feeder. Therefore, in order to generate hydrogen gas uniformly, it is necessary to make the distribution of the electrolysis voltage applied between the anode power supply and the cathode power supply arranged opposite to each other uniform.

Since the anode feeder and the cathode feeder each have their own electrical resistance, a voltage drop occurs when a current flows inside each feeder. For this reason, the electrolysis voltage in the region where the voltage drop is large between the anode power supply and the cathode power supply facing each other is lower than the electrolysis voltage in the region where the voltage drop is small. Accordingly, the amount of hydrogen gas generated varies depending on the location in the electrolytic chamber, and it may be difficult to efficiently dissolve the hydrogen gas into the electrolyzed water.

Especially, in the region near each power supply terminal, the current flowing inside each power supply is concentrated and the current value increases, so the voltage drop is large. And when applying the thin mesh metal which can be deform | transformed flexibly to each electric power feeding body, since the said electrical resistance becomes large, the tendency for the distribution of the generation amount of the hydrogen gas mentioned above to appear unevenly appears.

The present invention has been devised in view of the above situation, and an electrolytic cell and an electrolytic cell that can easily increase the concentration of dissolved hydrogen by uniformizing the distribution of the electrolytic voltage applied to each power feeder. The main purpose is to provide a water generator.

The first invention of the present invention is an electrolysis tank for electrolyzing water, and an electrolysis chamber to which water to be electrolyzed is supplied, and an anode-side power feeding arranged opposite to each other in the electrolysis chamber And a separator that is sandwiched between the anode-side feeder and the cathode-side feeder and divides the electrolytic chamber into an anode chamber and a cathode chamber. And a conductive auxiliary body having conductivity is provided in at least one of the anode-side power supply body and the cathode-side power supply body.

In the electrolytic cell according to the present invention, a DC voltage is applied to each of the anode-side feeder and the cathode-side feeder between the anode-side feeder and the cathode-side feeder. It is preferable that the power supply terminal of the at least one power supply body is fixed to the conductive auxiliary body.

In the electrolytic cell according to the present invention, the at least one power feeding body is formed in a rectangular shape that is long in the vertical direction along the flow of water in the electrolytic chamber as viewed from the thickness direction of the diaphragm, and the conductive auxiliary It is desirable that the body is formed along a lateral direction orthogonal to the longitudinal direction of the at least one power feeding body.

In the electrolytic cell according to the present invention, it is desirable that the conductive auxiliary body is provided on one end side in the longitudinal direction of the at least one power feeding body.

In the electrolytic cell according to the present invention, the conductive auxiliary body is preferably formed in a plate shape.

In the electrolytic cell according to the present invention, it is preferable that the anode-side power feeding body and the cathode-side power feeding body are made of a mesh metal.

The second invention of the present invention is an electrolyzed water generating device characterized by comprising the electrolytic cell.

In the electrolytic cell of the first invention of the present invention, since at least one of the anode-side feeder and the cathode-side feeder is provided with a conductive auxiliary body having conductivity, it is supplied to the feeder. The current is dispersed in the conductive auxiliary body, and the voltage drop at the power feeding body is suppressed. As a result, the electrolysis voltage at any position facing each other between the anode-side power supply body and the cathode-side power supply body is made uniform, and the distribution of the generated hydrogen gas is made uniform. Therefore, hydrogen gas can be efficiently dissolved in the electrolyzed water in the entire electrolytic cell, and the dissolved hydrogen concentration can be easily increased.

In the electrolyzed water generating apparatus according to the second invention of the present invention, as in the first invention, hydrogen gas can be efficiently dissolved in the electrolyzed water in the entire electrolytic cell, and the dissolved hydrogen concentration can be easily increased. It becomes.

It is a block diagram which shows schematic structure of one Embodiment of the electrolyzed water generating apparatus of this invention. It is the assembly perspective view which has arrange | positioned the main components before the assembly of the electrolytic cell of FIG. It is a perspective view which shows the 1st case piece and 2nd case piece of FIG. It is a perspective view which shows the anode electric power feeder and cathode electric power feeder of FIG. It is a perspective view which shows the modification of the anode electric power feeding body of FIG. 4, and a cathode electric power feeding body. It is a perspective view which shows another modification of the anode electric power feeder of FIG. 4, and a cathode electric power feeder. It is a perspective view which shows another modification of the anode electric power feeder and cathode electric power feeder of FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic configuration of an electrolyzed water generating apparatus 1 of the present embodiment. The electrolyzed water generating apparatus 1 may be used for generating water for domestic beverages and cooking and for generating dialysate for hemodialysis.

The electrolyzed water generating apparatus 1 includes an electrolysis tank 4 in which an electrolysis chamber 40 to which water to be electrolyzed is supplied, and an anode power supply 41 and a cathode power supply 42 that are disposed to face each other in the electrolysis chamber 40. And a diaphragm 43 disposed between the anode power supply 41 and the cathode power supply 42. Another electrolytic cell may be provided upstream or downstream of the electrolytic cell 4. Further, another electrolytic cell may be provided in parallel with the electrolytic cell 4. A configuration equivalent to that of the electrolytic cell 4 can also be applied to the electrolytic cell provided separately.

The diaphragm 43 divides the electrolysis chamber 40 into an anode chamber 40A on the anode feeder 41 side and a cathode chamber 40B on the cathode feeder 42 side. Water is supplied to both the anode chamber 40 </ b> A and the cathode chamber 40 </ b> B of the electrolysis chamber 40, and water is electrolyzed in the electrolysis chamber 40 by applying a DC voltage to the anode feeder 41 and the cathode feeder 42.

The diaphragm 43 allows ions generated by electrolysis to pass therethrough, and the anode feeder 41 and the cathode feeder 42 are electrically connected through the diaphragm 43. For the diaphragm 43, for example, a hydrophilic material such as polytetrafluoroethylene (PTFE), a solid polymer material made of a fluororesin having a sulfonic acid group, or the like is used.

The electrolyzed water generating apparatus 1 further includes a control means 6 for controlling the electrolyzer 4, a water inlet 7 provided on the upstream side of the electrolyzer 4, and a water outlet 8 provided on the downstream side of the electrolyzer 4. ing.

The control means 6 includes, for example, a CPU (Central Processing Unit) that executes various arithmetic processes and information processing, a program that controls the operation of the CPU, and a memory that stores various information.

Current detection means 44 is provided on the current supply line between the anode power supply 41 and the control means 6. The current detection unit 44 may be provided in a current supply line between the cathode power supply 42 and the control unit 6. The current detection unit 44 detects the electrolytic current supplied to the

power feeding bodies

41 and 42 and outputs a signal corresponding to the value to the control unit 6.

The control means 6 performs feedback control of the voltage applied between the anode power supply 41 and the cathode power supply 42 based on the signal input from the current detection means 44. For example, when the electrolysis current is excessive, the control unit 6 decreases the voltage, and when the electrolysis current is excessive, the control unit 6 increases the voltage. Thereby, the electrolysis current supplied to the

power feeding bodies

41 and 42 can be appropriately controlled.

The water inlet 7 has a water supply pipe 71, a flow rate sensor 72, a branching portion 73, a flow rate adjustment valve 74 and the like. The water supply pipe 71 is connected to, for example, a water purification cartridge (not shown), and guides water supplied with water purified by the water purification cartridge to the electrolysis chamber 40. The flow rate sensor 72 is provided in the water supply pipe 71. The flow rate sensor 72 periodically detects the flow rate per unit time of water supplied to the electrolysis chamber 40 (hereinafter sometimes simply referred to as “flow rate”) F, and outputs a signal corresponding to the value F to the control means 6. Output to.

The branch part 73 branches the water supply pipe 71 into two directions of the

water supply pipes

71a and 71b. The flow rate adjusting valve 74 connects the

water supply pipes

71a and 71b to the anode chamber 40A or the cathode chamber 40B. The flow rate of water supplied to the anode chamber 40A and the cathode chamber 40B is adjusted by the flow rate adjusting valve 74 under the control of the control means 6. The flow rate adjusting valve 74 adjusts the flow rate of water supplied to the anode chamber 40A and the cathode chamber 40B in order to increase the use efficiency of water. This may cause a pressure difference between the anode chamber 40A and the cathode chamber 40B.

In the present embodiment, since the flow rate sensor 72 is provided on the upstream side of the branching portion 73, the sum of the flow rate of water supplied to the anode chamber 40A and the flow rate of water supplied to the cathode chamber 40B, that is, A flow rate F of water supplied to the electrolysis chamber 40 is detected.

The water outlet 8 includes a flow path switching valve 81, a water discharge pipe 82, a drain pipe 83, and the like. The flow path switching valve 81 selectively connects the anode chamber 40A and the cathode chamber 40B to the water discharge pipe 82 or the drain pipe 83. When the electrolyzed water generating apparatus 1 is used for generating a dialysate for hemodialysis, the electrolyzed hydrogen water generated in the cathode chamber 40B dilutes the reverse osmosis membrane module for filtration and the dialysate stock solution through the water discharge pipe 82. Supplied to a dilution device or the like.

The control means 6 controls the polarity of the DC voltage applied to the anode power supply 41 and the cathode power supply 42. For example, the control means 6 integrates the flow rate F of water supplied to the electrolysis chamber 40 based on a signal input from the flow sensor 72, and when it reaches a predetermined integrated value, the anode power supply 41 and the cathode power supply 42. The polarity of the DC voltage applied to is switched. Along with this, the anode chamber 40A and the cathode chamber 40B are interchanged. In switching the polarity of the DC voltage, the control means 6 operates the flow rate adjustment valve 74 and the flow path switching valve 81 in synchronization. Thereby, the cathode chamber 40B and the water discharge pipe 82 are always connected, and the electrolytic hydrogen water generated in the cathode chamber 40B is discharged from the water discharge pipe 82.

FIG. 2 is an assembly perspective view in which main parts before assembly of the electrolytic cell 4 are arranged. The electrolytic cell 4 includes a first case piece 50 on the anode power supply 41 side and a second case piece 60 on the cathode power supply 42 side. The first case piece 50 and the second case piece 60 arranged to face each other are fixed to each other, so that the electrolysis chamber 40 (see FIG. 1) is formed therein.

The electrolytic cell 4 accommodates a laminated body 45 in which an anode power supply 41, a diaphragm 43 and a cathode power supply 42 are stacked in an electrolysis chamber 40.

The anode feeder 41 and the cathode feeder 42 are each formed in a sheet shape. By such an anode power supply 41 and cathode power supply 42, water can be electrolyzed in a large area, and the generation efficiency of hydrogen gas is increased.

The anode power supply body 41 and the cathode power supply body 42 are configured such that water can travel back and forth in the thickness direction. For the anode power supply 41 and the cathode power supply 42, for example, a net-like metal such as an expanded metal can be applied. Such a net-like anode power supply 41 and cathode power supply 42 can distribute water to the surface of the diaphragm 43 while sandwiching the diaphragm 43, and promote electrolysis in the electrolytic chamber 40. Further, the net-like anode power supply body 41 and the cathode power supply body 42 are flexibly deformed together with the diaphragm 43 to suppress damage to the diaphragm 43. For this reason, it is desirable that the anode power supply body 41 and the cathode power supply body 42 be formed of a net-like metal having a small thickness and a small strand width. In the present embodiment, as the anode power supply body 41 and the cathode power supply body 42, one in which a platinum plating layer is formed on the surface of a titanium expanded metal is applied. The platinum plating layer prevents the oxidation of titanium.

The anode power supply body 41 is provided with a power supply terminal 41 a that passes through the first case piece 50 and protrudes outside the electrolytic cell 4. For example, a terminal 41f is attached to the power supply terminal 41a via a sealing member 41b, a bush 41c, and nuts 41d and 41e. Similarly, the cathode power supply body 42 is also provided with a power supply terminal 42 a that penetrates the second case piece 60 and protrudes outside the electrolytic cell 4. For example, a terminal 42f is attached to the power supply terminal 42a via a sealing member 42b, a bush 42c, and nuts 42d and 42e. The

terminals

41f and 42f are connected to the control means 6 shown in FIG. A DC voltage is applied to the anode power supply 41 and the cathode power supply 42 via the

power supply terminals

41a and 42a and the

terminals

41f and 42f.

In the present embodiment, for the diaphragm 43, for example, a solid polymer material made of a fluorine-based resin material having a sulfonic acid group is used. In the electrolytic cell 4 having the diaphragm 43 using a solid polymer material, neutral electrolyzed water is generated. By electrolyzing water in the electrolytic chamber 40, electrolytic hydrogen water in which hydrogen gas is dissolved is obtained in the cathode chamber 40B, and electrolytic oxygen water in which oxygen gas is dissolved is obtained in the anode chamber 40A. On both surfaces of the diaphragm 43, plating layers 43a made of platinum are formed. The plating layer 43a, the anode power supply 41, and the cathode power supply 42 are in contact with each other and are electrically connected.

The diaphragm 43 is sandwiched between the anode power supply 41 and the cathode power supply 42 in the electrolysis chamber 40. Therefore, the shape of the diaphragm 43 is held by the anode power supply 41 and the cathode power supply 42. According to such a structure for holding the diaphragm 43, most of the stress caused by the pressure difference generated between the anode chamber 40A and the cathode chamber 40B is borne by the anode feeder 41 and the cathode feeder 42. The stress on 43 decreases. Thereby, even if the electrolyzed water generating apparatus 1 is operated in a state where a large pressure difference is generated between the anode chamber 40A and the cathode chamber 40B, no large stress is generated in the diaphragm 43. Therefore, it is possible to suppress damage to the diaphragm 43 and easily increase the water use efficiency.

Further, since the diaphragm 43 is sandwiched between the anode power feeding body 41 and the cathode power feeding body 42, the contact between the plating layer 43 a and the anode power feeding body 41 of the diaphragm 43 and between the plating layer 43 a and the cathode power feeding body 42. The resistance is reduced and the voltage drop is suppressed. Thereby, electrolysis in the electrolysis chamber 40 is promoted by a sufficient electrolysis current I, and electrolytic hydrogen water having a high dissolved hydrogen concentration can be generated.

As shown in FIG. 2, the outer sides of the outer periphery of the anode power supply 41 and the cathode power supply 42 are sealed to prevent water leakage from the mating surfaces of the first case piece 50 and the second case piece 60. A stop member 46 is provided. The outer peripheral portion of the diaphragm 43 is sandwiched by the sealing member 46.

The

case pieces

50 and 60 are made of, for example, a synthetic resin. Each

case piece

50 and 60 is formed in a rectangular shape that is long in the longitudinal direction V along the flow of water in the electrolysis chamber 40. Accordingly, the electrolytic chamber 40 is formed in a rectangular shape that is long in the vertical direction V. Such a vertically long electrolytic chamber 40 makes the flow path in the electrolytic cell 4 long. As a result, the hydrogen gas generated in the cathode chamber 40B is easily dissolved in the water in the cathode chamber 40B, and the dissolved hydrogen concentration can be increased.

3A is a perspective view of the first case piece 50 viewed from the inner surface side facing the electrolysis chamber 40 side, and FIG. 3B is a second case viewed from the inner surface side facing the electrolysis chamber 40 side. 3 is a perspective view of a piece 60. FIG.

Alignment surfaces 51 and 61 for fixing the first case piece 50 and the second case piece 60 are formed on the outer edge portions of the inner surfaces of the first case piece 50 and the second case piece 60. Inside the mating surfaces 51, 61, the inner walls are recessed from the mating surfaces 51, 61 in the thickness direction of the first case piece 50 and the second case piece 60, so that the

electrolysis parts

52, 62 are provided. The electrolysis unit 52 configures the anode chamber 40A, and the electrolysis unit 62 configures the cathode chamber 40B.

A plurality of first convex portions 53 are disposed on the inner surface of the first case piece 50. Each first convex portion 53 is arranged side by side in the horizontal direction H perpendicular to the vertical direction V, with the electrolysis portion 52 extending in the vertical direction V. On the other hand, a plurality of second convex portions 63 are arranged on the inner surface of the second case piece 60. Each of the second convex portions 63 is arranged side by side in the horizontal direction H with the electrolysis portion 62 extending in the vertical direction V. Such first convex portion 53 and second convex portion 63 do not hinder the movement of water flowing in the vertical direction V in the electrolysis chamber 40.

Each first convex portion 53 is in contact with the anode power feeding body 41 in the anode chamber 40A, and presses the anode power feeding body 41 toward the second case piece 60 side. On the other hand, each 2nd convex-shaped part 63 contact | abuts with the cathode electric power feeding body 42 in the cathode chamber 40B, and presses the cathode electric power feeding body 42 to the 1st case piece 50 side. Therefore, the laminated body 45 is sandwiched from both surfaces by the first convex portions 53 and the second convex portions 63. The shape and arrangement of the first convex portion 53 and the second convex portion 63 are arbitrary. For example, the first convex portions 53 and the second convex portions 63 are alternately arranged in the lateral direction of the electrolysis chamber with the laminate interposed therebetween as shown in FIG. Alternatively, as shown in FIG. 8 of the above-mentioned Patent Document 1, they may be arranged so as to face each other with the laminate interposed therebetween. Moreover, the 1st convex-shaped part 53 and the 2nd convex-shaped part 63 may be the form provided discretely in the vertical direction, as FIG. 9 and 10 of the said patent document 1 shows. In the form in which the first convex portions 53 and the second convex portions 63 are alternately arranged in the lateral direction of the electrolysis chamber with the laminate interposed therebetween, the first convex portions 53 and the second convex portions 53 are arranged. The laminated body is formed into a corrugated shape by the convex portion 63.

The first case piece 50 has a first water diversion channel 54 on the upstream side of the electrolysis unit 52 and a first water collecting channel 56 on the downstream side. The first water diversion channel 54 and the first water collecting channel 56 are formed deeper than the electrolysis unit 52 in which the first convex portion 53 is formed. On the other hand, the second case piece 60 has a second water diversion channel 64 on the upstream side of the electrolysis unit 62 and a second water collection channel 66 on the downstream side. The second water diversion channel 64 and the second water collecting channel 66 are formed deeper than the electrolysis unit 62 in which the second convex portion 63 is formed.

A through hole 58 is formed in the first case piece 50 so that the power supply terminal 41 a protrudes outside the first case piece 50. Similarly, a through hole 68 is formed in the second case piece 60 so that the power supply terminal 42 a protrudes outside the second case piece 60. The through hole 58 is provided in the first water collection channel 56, and the through hole 68 is provided in the second water collection channel 66.

2 and 3, the electrolytic cell 4 is provided with L-shaped

joints

91, 92, 93, 94. The

joints

91 and 92 are attached to the lower part of the first case piece 50 and the second case piece 60 and connected to the flow rate adjusting valve 74. The

joints

93 and 94 are attached to the upper portions of the first case piece 50 and the second case piece 60 and connected to the flow path switching valve 81. By starting water flow to the electrolyzed water generator 1, a general flow of water is generated from the lower part to the upper part of the anode chamber 40A and the cathode chamber 40B.

The hydrogen gas generated in the cathode chamber 40B moves as a minute bubble above the cathode chamber 40B. In the present embodiment, the movement direction of hydrogen gas and the direction in which water flows generally coincide with each other, so that hydrogen molecules easily dissolve in water and the dissolved hydrogen concentration is increased.

FIG. 4 shows an anode feeder 41 and a cathode feeder 42. In the present invention, the anode power feeder 41 is provided with a conductive auxiliary body 47. The conductive auxiliary body 47 is in contact with the anode power supply body 41. The conductive auxiliary body 47 is fixed to the anode power feeding body 41 by welding, for example.

The conductive auxiliary body 47 is made of a conductive material. The conductive auxiliary body 47 is preferably made of, for example, a metal material having an electric resistance smaller than that of the anode power supply body 41. In the present embodiment, the anode power feeding body 41 is made of a net-like metal, whereas the conductive auxiliary body 47 is made of, for example, a solid plate-like metal having a larger cross-sectional area. In this case, the conductive auxiliary body 47 may be made of a metal material equivalent to the anode power feeding body 41 or may be made of a metal material having an electrical resistivity smaller than that of the anode power feeding body 41. In the present embodiment, the conductive auxiliary body 47 is made of a metal material containing titanium, like the anode power supply body 41. In addition, since the conductive auxiliary body 47 is formed of the plate metal, it is possible to reduce the thickness of the anode power feeding body 41 and to reduce the thickness of the electrolytic cell 4 and thus the electrolyzed water generating apparatus 1. Become.

Similarly, the cathode feeder 42 is provided with a conductive auxiliary body 48. Since the configuration of the conductive auxiliary body 48 is also the same as that of the conductive auxiliary body 47, the description thereof is omitted.

As shown in FIG. 4, it is desirable that both the anode power supply body 41 and the cathode power supply body 42 are provided with conductive

auxiliary bodies

47 and 48, but at least one of the anode power supply body 41 and the cathode power supply body 42 is provided. A conductive

auxiliary body

47 or 48 may be provided. In this case, it is desirable that the power feeding body on the other side where the conductive

auxiliary body

47 or 48 is not provided is made of a metal material having a low electrical resistivity.

In the electrolyzed water generating apparatus 1 of the present invention, at least one of the anode power supply body 41 and the cathode power supply body 42 is in contact with one

power supply body

41 or 42 and has an electric resistance smaller than that of the one

power supply body

41 or 42. A conductive

auxiliary body

47 or 48 is provided. Therefore, the current supplied to the

power feeder

41 or 42 is dispersed in the conductive

auxiliary body

47 or 48, and the voltage drop at the

power feeder

41 or 42 is suppressed. As a result, the electrolysis voltage at any position facing each other in the anode power supply 41 and the cathode power supply 42 is made uniform, and the distribution of the generated hydrogen gas is made uniform. Therefore, hydrogen gas can be efficiently dissolved in the electrolyzed water in the entire electrolytic cell 4, and the dissolved hydrogen concentration can be easily increased.

The power supply terminal 41 a on the anode power supply 41 side is preferably fixed to the conductive auxiliary body 47. In the present embodiment, the power supply terminal 41a is fixed to the conductive auxiliary body 47 by welding. As a result, the power supply terminal 41 a and the conductive auxiliary body 47 are directly electrically connected without passing through the anode power supply body 41. Further, since the electric resistance in the vicinity of the power supply terminal 41a where the current flowing through the anode power supply 41 is concentrated is suppressed, the voltage drop in the anode power supply 41 is effectively suppressed, and the electrolytic voltage is made more uniform. Is done. Similarly, the power supply terminal 42 a on the cathode power supply 42 side is preferably fixed to the conductive auxiliary body 48. Thereby, the voltage drop in the cathode power supply 42 is effectively suppressed, and the electrolytic voltage is made more uniform.

The power supply terminal 41 a is fixed to the central portion of the conductive auxiliary body 47. When the electrical resistance of the conductive auxiliary body 47 is sufficiently smaller than the electrical resistance of the anode power supply body 41, the power supply terminal 41 a may be fixed to the end portion in the lateral direction H of the conductive auxiliary body 47. The same applies to the power supply terminal 42a.

The conductive auxiliary body 47 is desirably formed along the lateral direction H of the anode power supply body 41. Similarly, the conductive auxiliary body 48 is preferably formed along the lateral direction H of the cathode power supply body 42. According to such conductive

auxiliary bodies

47 and 48, the electric potential becomes the same in the region aligned in the lateral direction H of the power feeding body 41, and the electrolytic voltage is made more uniform.

The conductive auxiliary body 47 obstructs the passage of water in the thickness direction of the anode power supply body 41. For this reason, in activating electrolysis in the electrolysis chamber 40, the conductive auxiliary body 47 is connected to the end of the anode power supply body 41 in order to suppress the influence of the water in the central portion of the electrolysis chamber 40. It is desirable to be formed at the edge.

In the present embodiment, the conductive auxiliary body 47 is formed on one end side in the longitudinal direction V of the anode power supply body 41. Similarly, the conductive auxiliary body 48 is also formed on one end side in the vertical direction V of the cathode power supply body 42. Thereby, the conductive

auxiliary bodies

47 and 48 are accommodated in the first water collecting channel 56 and the second water collecting channel 66, and the electrolytic cell 4 can be easily reduced in thickness. Further, since the conductive

auxiliary bodies

47 and 48 do not interfere with the first convex portion 53 and the second convex portion 63, the waveform deformation of the stacked body 45 by the first convex portion 53 and the second convex portion 63 is hindered. There is no fear.

FIG. 5 shows an anode feeder 41X and a cathode feeder 42X, which are modifications of the anode feeder 41 and the cathode feeder 42. Of the anode power supply body 41X and the cathode power supply body 42X, the above-described configurations of the anode power supply body 41 and the cathode power supply body 42 can be appropriately employed for portions not described below.

In the anode power supply 41X and the cathode power supply 42X, the anode-side power supply terminal 41a and the cathode-side power supply terminal 42a are provided at positions that do not face each other. That is, the power supply terminal 41 a and the power supply terminal 42 a are provided at positions that do not overlap each other when viewed from the thickness direction of the diaphragm 43. In a preferred embodiment, the power supply terminal 41a is on the one end 41F (upper end in FIG. 5) side of the anode power supply 41X, and the power supply terminal 42a is on the other end 42G (lower end in FIG. 5) side of the cathode power supply 42X. Is provided. Accordingly, the conductive auxiliary body 47 is provided at one end portion 41F of the anode power feeding body 41X, and the conductive auxiliary body 48 is provided at the other end portion 42G of the cathode power feeding body 42X.

Hereinafter, a case where the electrical resistances of the conductive

auxiliary bodies

47 and 48 are sufficiently smaller than the electrical resistances of the anode feeder 41X and the cathode feeder 42X will be considered. In the anode power supply 41X and the cathode power supply 42X, the distance L1 from the one end 41F of the anode power supply 41 and the one end 42F of the cathode power supply 42, the other end 41G of the anode power supply 41, and the other end of the cathode power supply 42 The electrolytic voltage at the point P1 at a distance L2 from 42G is calculated as follows. Assuming that a uniform current I flows in the longitudinal direction of the anode feeder 41X and the cathode feeder 42X, the voltage drop generated from the conductive auxiliary body 47 to the point P1 in the anode feeder 41X is I × ρL1, and the cathode The voltage drop generated from the conductive auxiliary body 48 to the point P1 in the power feeding body 42X is I × ρL2. Therefore, when the voltage between the power supply terminal 41a and the power supply terminal 42a is V, the electrolytic voltage at the point P1 is V−I × ρ (L1 + L2).

Similarly, the point P2 is located at a distance L2 from one end 41F of the anode power supply 41 and one end 42F of the cathode power supply 42, and at a distance L1 from the other end 41G of the anode power supply 41 and the other end 42G of the cathode power supply 42. The electrolytic voltage is calculated as follows. The voltage drop generated from the conductive auxiliary body 47 to the point P2 in the anode power supply 41X is I × ρL2, and the voltage drop generated from the conductive auxiliary body 48 to the point P2 in the cathode power supply 42X is I × ρL1. Therefore, the electrolysis voltage at the point P2 is V−I × ρ (L1 + L2).

Here, L1 + L2 is the distance from the one end 41F to the other end 41G of the anode power supply 41 and the distance from the one end 42F to the other end 42G of the cathode power supply 42. And the electrolysis voltage at any position on the cathode power supply 42 is equal and is V−I × ρ (L1 + L2).

Therefore, on the anode power supply body 41 and the cathode power supply body 42, the electrolysis voltage at any position facing each other is made uniform, and the distribution of the generated hydrogen gas becomes uniform. Therefore, hydrogen gas can be efficiently dissolved in the electrolyzed water in the entire electrolytic cell 4, and the dissolved hydrogen concentration can be easily increased.

FIG. 6 shows an anode power feeding body 41Y and a cathode power feeding body 42Y which are another modified example of the anode power feeding body 41 and the cathode power feeding body 42. Of the anode power feeding body 41Y and the cathode power feeding body 42Y, the configuration of the anode power feeding body 41, the cathode power feeding body 42 and the like described above can be appropriately adopted for portions not described below. The anode power supply body 41 </ b> Y has a conductive auxiliary body 47 at the edge in the horizontal direction H. On the other hand, the cathode power supply body 42Y has a conductive auxiliary body 48 at the edge in the horizontal direction H.

In the anode power supply body 41Y and the cathode power supply body 42Y, the power supply terminal 41a on the anode power supply body 41 side and the power supply terminal 42a on the cathode power supply body 42 side are provided at positions facing each other. Accordingly, the conductive auxiliary body 47 and the conductive auxiliary body 48 are provided at positions facing each other across the diaphragm 43.

The conductive auxiliary body 47 and the conductive auxiliary body 48 extend along the longitudinal direction V, that is, the longitudinal direction of the anode power supply body 41Y and the cathode power supply body 42Y. Such a conductive auxiliary body 47 and a conductive auxiliary body 48 can effectively suppress a voltage drop in the anode power supply body 41Y and the cathode power supply body 42Y.

In the anode power supply 41Y and the cathode power supply 42Y shown in FIG. 6, the power supply terminal 41a on the anode power supply 41 side and the power supply terminal 42a on the cathode power supply 42 side are the same as the anode power supply 41X and the cathode power supply 42X. May be provided at positions that do not face each other.

FIG. 7 shows an anode power feeding body 41Z and a cathode power feeding body 42Z, which are still another modified example of the anode power feeding body 41 and the cathode power feeding body 42. Among the anode power supply body 41Z and the cathode power supply body 42Z, the configurations of the anode power supply body 41, the cathode power supply body 42, and the like described above can be appropriately employed for portions not described below.

In the anode power supply 41Z and the cathode power supply 42Z, the power supply terminal 41a is provided at the center of the anode power supply 41, and the power supply terminal 42a is provided at the center of the cathode power supply 42. Are provided at positions facing each other across the diaphragm 43. As a result, the distance from the feeding terminal 41a to the edge of the anode feeding body 41 and the distance from the feeding terminal 42a to the edge of the cathode feeding body 42 are shortened, and the voltage drop at the anode feeding body 41Z and the cathode feeding body 42Z is reduced. It is suppressed.

As mentioned above, although the electrolyzed water generating apparatus 1 and the electrolytic cell 4 of this embodiment were demonstrated in detail, this invention is changed and implemented in various aspects, without being limited to said specific embodiment. That is, the electrolytic cell 4 is at least an electrolytic cell 4 for electrolyzing water, and is disposed opposite to each other in the electrolytic chamber 40 to which water to be electrolyzed is supplied and the electrolytic chamber 40. The anode-side power supply body 41 and the cathode-side power supply body 42 are sandwiched between the power supply body 41 and the power supply body 42 in the electrolysis chamber 40, and the electrolysis chamber 40 is divided into an anode chamber 40A and a cathode chamber 40B. It is sufficient that at least one of the power supply body 41 and the power supply body 42 is provided with a conductive

auxiliary body

47 or 48 having conductivity.

DESCRIPTION OF SYMBOLS 1 Electrolyzed water production | generation apparatus 4 Electrolysis tank 40 Electrolytic chamber

40A Anode chamber

40B Cathode chamber 41 Anode feeder 41a Feed terminal 42 Cathode feeder 42a Feed terminal 43 Diaphragm 47 Conductive auxiliary body 48 Conductive auxiliary body

Claims

An electrolytic cell for electrolyzing water,
An electrolysis chamber supplied with water to be electrolyzed;
In the electrolytic chamber, the anode-side power supply body and the cathode-side power supply body, which are arranged to face each other,
A diaphragm that is sandwiched between the anode-side power supply body and the cathode-side power supply body in the electrolysis chamber, and that partitions the electrolysis chamber into an anode chamber and a cathode chamber,
An electrolytic cell, wherein at least one of the anode-side power supply body and the cathode-side power supply body is provided with a conductive auxiliary body having conductivity.
Each of the anode-side power supply body and the cathode-side power supply body is provided with a power supply terminal for applying a DC voltage between the anode-side power supply body and the cathode-side power supply body,
The electrolytic cell according to claim 1, wherein a power supply terminal of the at least one power supply body is fixed to the conductive auxiliary body.
The at least one power supply body is formed in a rectangular shape that is long in the vertical direction along the flow of water in the electrolytic chamber, as viewed from the thickness direction of the diaphragm,
The electrolytic cell according to claim 1, wherein the conductive auxiliary body is formed along a horizontal direction orthogonal to the vertical direction of the at least one power feeding body.
The electrolytic cell according to claim 3, wherein the conductive auxiliary body is provided on one end side in the longitudinal direction of the at least one power feeding body.
The electrolytic cell according to any one of claims 1 to 4, wherein the conductive auxiliary body is formed in a plate shape.
6. The electrolytic cell according to claim 5, wherein the anode-side power supply body and the cathode-side power supply body are made of a mesh metal.
An electrolyzed water generator comprising the electrolyzer according to any one of claims 1 to 6.