WO2017006913A1

WO2017006913A1 - Electrolytic cell and electrolyzed-water generation device

Info

Publication number: WO2017006913A1
Application number: PCT/JP2016/069790
Authority: WO
Inventors: 孝士橘
Original assignee: 株式会社日本トリム
Priority date: 2015-07-08
Filing date: 2016-07-04
Publication date: 2017-01-12
Also published as: CN107531519A; JP2017018866A; CN107531519B; KR20180027408A; JP6154859B2; KR102567676B1

Abstract

An electrolyzed-water generation device that is provided with an electrolytic cell 4 that has an electrolysis chamber 40 formed therein, with a positive-electrode feeder 41 and a negative-electrode feeder 42 that are arranged so as to face inside the electrolysis chamber 40, and with a diaphragm 43 that is sandwiched and held by the positive-electrode feeder 41 and the negative-electrode feeder 42 and that partitions the electrolysis chamber 40 into a positive-electrode chamber 40A that is on the positive-electrode feeder 41 side and a negative-electrode chamber 40B that is on the negative-electrode feeder 42 side. The positive-electrode feeder 41, the negative-electrode feeder 42, and the diaphragm 43 are formed so as to be wave-shaped in a cross-section that is orthogonal to the flow of water inside the electrolysis chamber 40. Inner surfaces of the electrolytic cell 4 that face the electrolysis chamber 40 have first inner-surface sections 51 that are provided on the positive-electrode feeder 41 side so as to be separated from the positive-electrode feeder 41 toward the outside of the electrolytic cell 4 and that are formed to have a wave shape that parallels the positive-electrode feeder 41; and second inner-surface sections 61 that are provided on the negative-electrode feeder 42 side so as to be separated from the negative-electrode feeder 42 toward the outside of the electrolytic cell 4 and that are formed to have a wave shape that parallels the negative-electrode feeder 42.

Description

Electrolysis tank and electrolyzed water generator

The present invention relates to an electrolytic cell that electrolyzes water to generate electrolytic hydrogen water, and an electrolyzed water generating apparatus including the same.

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.

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 make the distribution of the water flow rate uniform in the electrolyzer.

Japanese Patent No. 569724

FIG. 8 is an enlarged view of the electrolytic cell 104 having the same configuration as that of the electrolytic cell disclosed in Patent Document 1, cut along a cross section perpendicular to the flow of water. In the electrolytic cell 104, the laminated body 45 of the anode power supply body 41, the diaphragm 43, and the cathode power supply body 42 is formed in a wave shape with a cross section orthogonal to the flow of water in the electrolysis chamber. On the other hand, the

inner surfaces

151 and 161 of the electrolytic cell 104 are formed on a pair of planes P1 and P2 that face each other in parallel with the stacked body 45 interposed therebetween. Therefore, the distances D11, D12, D13 from the anode power supply 41 to the inner surface 151 vary according to the distance from the second convex portion 63, and the distances D21, D22, D23 from the cathode power supply 42 to the inner surface 161 are changed. Also, it varies according to the distance from the first convex portion 53. As a result, the distance from the anode power supply body 41 to the inner surface 151 and the distance from the cathode power supply body 42 to the inner surface 161 are not uniform, and the flow velocity of water flowing between the

power supply bodies

41 and 42 and the

inner surfaces

151 and 161 is not uniform. It becomes uniform.

More specifically, in the vicinity of the first convex portion 53, since the distance D21 from the cathode power supply 42 to the inner surface 161 is small, the flow of water on the surface of the cathode power supply 42 becomes slow, which is sufficient locally. It becomes difficult to supply a large amount of water. As a result, for example, in the case where a large amount of hydrogen gas is generated on the surface of the cathode power supply 42 by increasing the electrolysis current supplied to each of the

power supply bodies

41 and 42, in the vicinity of the first convex portion 53. There is a possibility that the dissolved hydrogen concentration of the electrolytic hydrogen water in the cathode chamber 40B locally approaches the saturation value. In such a case, the hydrogen gas generated on the surface of the cathode power supply 42 is difficult to dissolve in water, and the hydrogen gas in the form of bubbles may flow out of the cathode chamber 40B together with the electrolytic hydrogen water. There was a risk of hindering the improvement of the hydrogen concentration.

The present invention has been devised in view of the above circumstances, and it is possible to easily increase the concentration of dissolved hydrogen by equalizing the flow rate of water flowing between each power feeder and the inner surface of the electrolytic cell. The main object is to provide an electrolytic cell and an electrolyzed water generating device.

According to a first aspect of the present invention, there is formed an electrolysis chamber to which water to be electrolyzed is supplied, and the anode power supply body and the cathode power supply body arranged to face each other in the electrolysis chamber, the anode power supply body, and the An electrolytic cell sandwiched by a cathode power supply and mounted with a diaphragm that divides the electrolysis chamber into an anode chamber on the anode power supply side and a cathode chamber on the cathode power supply side, wherein the anode power supply The cathode feeder and the diaphragm are formed in a wave shape in a cross section orthogonal to the flow of water in the electrolytic chamber, and the inner surface of the electrolytic cell facing the electrolytic chamber is on the anode feeder side. A first inner surface formed in a wave shape along the anode feeder, and from the cathode feeder to the outside of the electrolytic vessel on the cathode feeder side Wave shape along the cathode feeder And having a second inner surface portion which is formed.

In the electrolytic cell according to the present invention, the inner surface protrudes from the first inner surface portion toward the anode power feeding body and contacts the anode power feeding body, and the cathode power feeding from the second inner surface portion. It is desirable that a second convex portion protruding to the body side and contacting the cathode power supply body is formed.

In the electrolytic cell according to the present invention, it is preferable that the first convex portion is opposed to the second inner surface portion, and the second convex portion is opposed to the first inner surface portion.

In the electrolytic cell according to the present invention, the first convex portion extends along the flow of water in the anode chamber, and the second convex portion extends along the flow of water in the cathode chamber. It is desirable.

In the electrolytic cell according to the present invention, the first convex portion is continuously formed from one end portion of the anode chamber to the other end portion, and the second convex portion is formed from one end portion of the cathode chamber. It is desirable to form continuously over the end.

In the electrolytic cell according to the present invention, the first inner surface portion is formed at a certain distance from the anode feeder in the thickness direction of the diaphragm, and the second inner surface portion is formed in the thickness direction of the diaphragm. It is desirable that the cathode power supply is formed at a certain distance.

A second invention of the present invention is an electrolyzed water generating apparatus comprising the electrolyzer according to any one of claims 1 to 6.

In the electrolytic cell of the first invention of the present invention, the diaphragm is sandwiched between the anode feeder and the cathode feeder, and the anode feeder, the cathode feeder, and the diaphragm are corrugated in a cross section orthogonal to the flow of water in the electrolytic chamber. Is formed. The inner surface of the electrolytic cell facing the electrolytic chamber side is a first inner surface provided on the anode feeder side and away from the anode feeder on the anode feeder side, and the electrolytic vessel from the cathode feeder on the cathode feeder side. And a second inner surface portion provided apart from the outside. The first inner surface portion is formed in a wave shape along the anode power supply body, and the second inner surface portion is formed in a wave shape along the cathode power supply body. Therefore, the distance from the anode power supply to the first inner surface and the distance from the cathode power supply to the second inner surface are made uniform, and the flow velocity of the water flowing between each power supply and each inner surface is made uniform. As a result, the gas generated in the electrolysis chamber is easily dissolved in the electrolyzed water throughout the electrolysis chamber, and the dissolved hydrogen concentration can be easily increased.

According to the electrolyzed water generating device of the second invention of the present invention, as in the first invention, the gas generated in the electrolysis chamber is easily dissolved in the electrolyzed water throughout the electrolysis chamber, and the dissolved hydrogen concentration is easily increased. Is possible.

It is a block diagram which shows schematic structure of one Embodiment of the electrolyzed water generating apparatus of this invention. It is a perspective view 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 sectional drawing which cut | disconnected the electrolytic cell of FIG. 2 in the cross section orthogonal to the flow of water. It is sectional drawing which expands and shows the electrolytic cell of FIG. It is sectional drawing which cut | disconnected the electrolytic cell of FIG. 2 in the cross section orthogonal to the flow of water. It is sectional drawing which expands and shows the modification of the electrolytic cell of FIG. It is sectional drawing which cut | disconnected the principal part of the conventional electrolytic cell in the cross section orthogonal to the flow of water.

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 A and the cathode chamber 40 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 solid polymer material made of a fluorine-based resin having a sulfonic acid group 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 a perspective view before assembly 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 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 43a and the anode power feeding body 41 of the diaphragm 43 and between the plating layer 43a 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 vertical 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.

The first case piece 50 has a first inner surface portion 51. The first inner surface portion 51 is provided away from the anode power supply body 41 to the outside of the electrolytic cell 4. A space between the anode power supply body 41 and the first inner surface portion 51 constitutes an anode chamber 40A. Similarly, the second case piece 60 has a second inner surface portion 61. The second inner surface portion 61 is provided away from the cathode power supply 42 to the outside of the electrolytic cell 4. A space between the cathode power supply body 42 and the second inner surface portion 61 constitutes the cathode chamber 40B.

A mating surface 51A is formed on the outer edge portion of the first inner surface portion 51, and a mating surface 61A is formed on the outer edge portion of the second inner surface portion 61, respectively. The first case piece 50 and the second case piece 60 are fixed to each other by bringing the mating surfaces 51A and 61A into contact with each other. An electrolysis unit 52 is provided inside the mating surface 51A. The electrolysis part 52 is formed by the first inner face part 51 being recessed from the mating face 51 A in the thickness direction of the first case piece 50. Similarly, an electrolytic unit 62 is provided inside the mating surface 61A. The electrolysis part 62 is formed such that the second inner surface part 61 is depressed in the thickness direction of the second case piece 60 from the mating surface 61A. The electrolysis unit 52 configures the anode chamber 40A, and the electrolysis unit 62 configures the cathode chamber 40B.

FIG. 4 shows a cross section in which the electrolytic cell 4 is cut in the horizontal direction H perpendicular to the vertical direction V along the flow of water in the electrolysis chamber 40. FIG. 5 is an enlarged view of the laminate 45, the first inner surface portion 51, and the second inner surface portion 61 in the cross section of FIG.

As shown in FIGS. 4 and 5, the anode feeder 41, the cathode feeder 42, and the diaphragm 43 are formed in a wave shape with a cross section in the lateral direction H perpendicular to the flow of water in the electrolysis chamber 40.

The first inner surface portion 51 is formed in a wave shape along the anode power supply body 41. That is, the first inner surface 51 and the anode power supply 41 are arranged in parallel so that the phase of the wave-shaped first inner surface 51 matches the phase of the wave-shaped anode power supply 41. Accordingly, the distance from the anode power supply body 41 to the first inner surface portion 51 is made uniform, and the flow velocity of the water flowing between the anode power supply body 41 and the first inner surface portion 51 is made uniform. As a result, the oxygen gas generated in the anode chamber 40A can be easily dissolved in the electrolyzed water throughout the anode chamber 40A, and the dissolved oxygen concentration can be easily increased.

Similarly, the second inner surface portion 61 is formed in a wave shape along the cathode power supply 42. Therefore, the distance from the cathode power supply 42 to the second inner surface 61 is made uniform, and the flow velocity of the water flowing between the cathode power supply 42 and the second inner surface 61 is made uniform. Thereby, the hydrogen gas generated in the cathode chamber 40B is easily dissolved in the electrolyzed water in the entire cathode chamber 40B, and the dissolved hydrogen concentration can be easily increased.

3 to 5, a plurality of first convex portions 53 are disposed on the inner surface of the first case piece 50. Each first convex portion 53 protrudes from the first inner surface portion 51 toward the anode power feeding body 41, extends the electrolytic portion 52 in the vertical direction V, and is arranged in the horizontal direction H perpendicular to 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 also protrudes from the second inner surface portion 61 toward the cathode power feeding body 42, extends the electrolytic portion 62 in the vertical direction V, and is arranged in the horizontal direction H perpendicular to the vertical direction V. .

The tip of each first convex portion 53 abuts on the anode power supply body 41 in the anode chamber 40A and presses the anode power supply body 41 toward the second case piece 60 side. On the other hand, the tip of each second convex portion 63 abuts on the cathode power supply body 42 in the cathode chamber 40B and presses the cathode power supply body 42 toward the first 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 first convex portion 53 and the second convex portion 63 are alternately provided at equal intervals in the horizontal direction H of the electrolytic cell 4. Thus, when the first case piece 50 and the second case piece 60 are fixed, the laminated body 45, that is, the anode power supply body 41 and the cathode power supply body are formed by the first convex portion 53 and the second convex portion 63. 42 and the diaphragm 43 can be corrected to a wave shape of substantially the same wavelength and supported.

The shape and arrangement of the first convex portion 53 and the second convex portion 63 are arbitrary. For example, each first convex portion 53 extends along the vertical direction V in which water flows in the anode chamber 40A. The first convex portions 53 are arranged in the horizontal direction H. Such a first convex portion 53 does not hinder the movement of water flowing in the vertical direction V in the anode chamber 40A.

Similarly, each of the second convex portions 63 extends along the vertical direction V in which water flows in the cathode chamber 40B. The second convex portions 63 are arranged side by side in the horizontal direction H. Such a second convex portion 63 does not hinder the movement of water flowing in the vertical direction V in the cathode chamber 40B.

Further, the first convex portion 53 extends from one end portion of the anode chamber 40A (in FIG. 3, the upper end portion of the electrolysis portion 52, that is, the region near the first water collecting channel 56) to the other end portion (in FIG. 3, the electrolysis portion 52). It is formed in a rib shape continuous over the lower end, that is, in the vicinity of the first water diversion channel 54). On the other hand, the second convex portion 63 is also connected to one end of the cathode chamber 40B (in FIG. 3, the upper end of the electrolysis unit 62, that is, the region near the second water collection channel 66) and the other end (of the electrolysis unit 62 in FIG. 3). It is formed in a rib shape continuous over the lower end, that is, in the vicinity of the second water diversion channel 64. By such first convex portion 53 and second convex portion 63, the anode power supply body 41 and the cathode power supply body 42 can be uniformly pressed over a wide range in the vertical direction V. Thereby, the contact pressure between the diaphragm 43 and each of the

power feeding bodies

41 and 42 is sufficiently ensured, and the contact resistance between the diaphragm 43 and each of the

power feeding bodies

41 and 42 is reduced. Further, since the distribution of the contact pressure between the diaphragm 43 and each of the

power feeding bodies

41 and 42 is made uniform, the electrolysis voltage is made uniform and the distribution of the generated hydrogen gas is made uniform. Therefore, a sufficient electrolysis current I can be easily obtained without excessively increasing the electrolysis voltage applied to each of the

power supply bodies

41 and 42, and the generation efficiency of hydrogen gas can be easily increased.

The first convex portion 53 and the second convex portion 63 are preferably formed in the above-described rib shape, but as shown in FIG. 9 or FIG. The provided form may be sufficient.

As shown in FIG. 5, in the first case piece 50 and the second case piece 60, the first convex portion 53 faces the second inner surface portion 61 through the laminated body 45, and the second convex portion 63 opposes the 1st inner surface part 51 through the laminated body 45. As shown in FIG. Since the laminated body 45 is pressed and protrudes toward the second case piece 60 by the first convex portion 53, the cathode power supply 42 protrudes toward the cathode chamber 40B. Furthermore, in the present invention, since the second inner surface portion 61 is formed in a wave shape along the cathode power supply body 42, the second inner surface portion 61 is located in the second case at a location facing the first convex portion 53. It sinks in the thickness direction of the piece 60. On the other hand, since the laminated body 45 is pressed and protrudes toward the first case piece 50 by the second convex portion 63, the anode power feeding body 41 protrudes toward the anode chamber 40A. Furthermore, in the present invention, since the first inner surface portion 51 is formed in a wave shape along the anode power supply body 41, the first inner surface portion 51 is located at the location facing the second convex portion 63 in the first case. It sinks in the thickness direction of the piece 50.

In the present embodiment, the first inner surface portion 51 is formed in the entire region sandwiched between the adjacent first convex portions 53. The first inner surface portion 51 is formed in a partial region sandwiched between the adjacent first convex portions 53. One inner surface portion 51 may be formed. The second inner surface portion 61 is the same as the first inner surface portion 51.

As shown in FIG. 5, the first inner surface portion 51 is preferably formed so as to have a constant distance D1 from the anode power supply body 41 in the thickness direction of the diaphragm 43. According to such a first inner surface portion 51, the distribution of the channel cross-sectional area per unit length in the lateral direction H becomes uniform in the anode chamber 40 A, and flows between the anode power supply 41 and the first inner surface portion 51. The water flow rate is made more uniform. As a result, the oxygen gas generated in the anode chamber 40A can be easily dissolved in the electrolyzed water throughout the anode chamber 40A, and the dissolved oxygen concentration can be easily increased.

Similarly, it is desirable that the second inner surface portion 61 is formed so as to have a constant distance D2 from the cathode power supply body 42 in the thickness direction of the diaphragm 43. According to such a second inner surface portion 61, the distribution of the channel cross-sectional area per unit length in the lateral direction H becomes uniform in the cathode chamber 40 B, and flows between the cathode power supply 42 and the second inner surface portion 61. The water flow rate is made more uniform. Thereby, the hydrogen gas generated in the cathode chamber 40B is easily dissolved in the electrolyzed water in the entire cathode chamber 40B, and the dissolved hydrogen concentration can be easily increased.

In the present embodiment, since the polarities of the

power feeding bodies

41 and 42 are switched based on the integrated value of the flow rate F of water supplied to the electrolysis chamber 40, the distance D1 and the distance D2 are set equal to each other. Is desirable.

FIG. 6 shows a cross section in which the electrolytic cell 4 is cut in the longitudinal direction V along the flow of water in the electrolysis chamber 40. The first case piece 50 has a first water diversion channel 54 and a first slope portion 55 on the upstream side of the electrolysis unit 52, and a first water collection channel 56 and a first slope portion 57 on the downstream side of the electrolysis unit 52. Yes. The first diversion channel 54 branches the water flowing from the joint 91 and supplies it to the electrolysis unit 52. The first slope 55 is provided between the first water diversion channel 54 and the electrolysis unit 52. The flow of water flowing from the first water diversion channel 54 into the electrolysis unit 52 is smoothed by the first slope portion 55. The first water collection channel 56 collects water flowing out from the electrolysis unit 52 and supplies it to the joint 93. The first slope 57 is provided between the first water collecting channel 56 and the electrolysis unit 52. The flow of water flowing out from the electrolysis unit 52 to the first water collecting channel 58 is smoothed by the first slope portion 57.

Similarly, the second case piece 60 includes a second water diversion channel 64 and a second slope portion 65 on the upstream side of the electrolysis unit 62, and a second water collection channel 66 and a second slope portion 67 on the downstream side of the electrolysis unit 62, respectively. Have. Regarding the second water diversion channel 64, the second sloping surface portion 65, the second water collecting channel 66 and the second sloping surface portion 67, the first water diversion channel 54, the first sloping surface portion 55, the first water collecting channel 56 and the first sloping surface portion 57 Since it is equivalent, the description is abbreviate | omitted.

FIG. 7 shows an electrolytic cell 4 A that is a modification of the electrolytic cell 4. Among the modifications shown in the figure, the configuration of the electrolytic cell 4 described above can be adopted for portions not described below. The electrolytic cell 4A has a first convex portion 53 at a position facing the second convex portion 63 via the laminated body 45 and a second convex portion at a position facing the first convex portion 53 via the laminated body 45. It differs from the electrolytic cell 4 shown by FIG. 4 by the point to which the shape part 63 is added, respectively.

In the electrolytic cell 4A, the multilayer body 45 is sandwiched from both surfaces by the first convex portion 53 and the second convex portion 63 that are disposed at positions facing each other via the multilayer body 45. Thereby, the contact pressure between the diaphragm 43 and each of the

power feeding bodies

41 and 42 is reduced. Therefore, a sufficient electrolysis current I can be easily obtained without excessively increasing the electrolysis voltage applied to each of the

power supply bodies

As mentioned above, although the electrolyzed water generating apparatus 1 of this embodiment was demonstrated in detail, this invention is changed and implemented in various aspects, without being limited to said specific embodiment. That is, the electrolyzed water generating apparatus 1 includes at least an electrolysis tank 4 in which an electrolysis chamber 40 to which water to be electrolyzed is supplied, an anode feeder 41 disposed opposite to each other in the electrolysis chamber 40, and A diaphragm 43 that is sandwiched between a cathode feeder 42, an anode feeder 41, and a cathode feeder 42, and 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. The anode feeder 41, the cathode feeder 42 and the diaphragm 43 are formed in a wave shape in a cross section orthogonal to the flow of water in the electrolytic chamber 40, and the inner surface of the electrolytic cell 4 facing the electrolytic chamber 40 side is A first inner surface portion 51 that is provided on the anode feeder 41 side away from the anode feeder 41 outside the electrolytic cell 4 and is formed in a wave shape along the anode feeder 41, and on the cathode feeder 42 side. Provided away from the cathode feeder 42 to the outside of the electrolytic cell 4 , It may have a second inner surface portion 61 which is formed in a waveform shape along the cathode current collector 42.

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

40A Anode chamber

40B Cathode chamber 41 Anode feeder 42 Cathode feeder 43 Separator 51 First inner surface portion 53 First convex portion 62 Second inner surface portion 63 Second convex portion

Claims

An electrolysis chamber is formed to which water to be electrolyzed is supplied,
An anode feeder and a cathode feeder disposed opposite to each other in the electrolytic chamber;
An electrolytic cell sandwiched between the anode feeder and the cathode feeder and provided with a diaphragm that divides the electrolysis chamber into an anode chamber on the anode feeder side and a cathode chamber on the cathode feeder side. And
The anode feeder, the cathode feeder and the diaphragm are formed in a wave shape in a cross section perpendicular to the flow of water in the electrolytic chamber,
The inner surface of the electrolytic cell facing the electrolytic chamber side is
A first inner surface portion provided on the anode feeder side away from the anode feeder on the outside of the electrolytic cell and formed in a wave shape along the anode feeder;
An electrolytic cell comprising: a second inner surface portion formed in a wave shape along the cathode power supply, provided on the cathode power supply side and spaced apart from the cathode power supply to the outside of the electrolytic cell.
On the inner surface,
A first convex portion that protrudes from the first inner surface portion toward the anode power feeding body and contacts the anode power feeding body;
2. The electrolytic cell according to claim 1, wherein a second convex portion that protrudes from the second inner surface portion toward the cathode power feeder and contacts the cathode power feeder is formed.
3. The electrolytic cell according to claim 2, wherein the first convex portion is opposed to the second inner surface portion, and the second convex portion is opposed to the first inner surface portion.
The first convex portion extends along the flow of water in the anode chamber,
The electrolytic cell according to claim 2 or 3, wherein the second convex portion extends along a flow of water in the cathode chamber.
The first convex portion is continuously formed from one end portion to the other end portion of the anode chamber,
The electrolytic cell according to claim 4, wherein the second convex portion is continuously formed from one end portion to the other end portion of the cathode chamber.
The first inner surface portion is formed at a certain distance from the anode feeder in the thickness direction of the diaphragm,
6. The electrolytic cell according to claim 1, wherein the second inner surface portion is formed at a certain distance from the cathode feeder in the thickness direction of the diaphragm.
An electrolyzed water generating apparatus comprising the electrolyzer according to any one of claims 1 to 6.