JP4677993B2 - Electrolyzed water generator - Google Patents

Description

  The present invention relates to an electrolyzed water generating device used for an alkali ion water conditioner and the like, and more particularly to a technique for preventing a diaphragm from being deteriorated by chlorine or the like.

  Conventionally, methods for electrolyzing water using an electrolytic cell include, for example, techniques described in Patent Document 1 and the like, and these include tap water directly or water from tap water by adsorption purification unit such as activated carbon. After passing through the filter medium part such as a hollow fiber membrane and removing impurities in the water, it is introduced into an electrolytic cell having a structure in which a facing negative electrode and a nonwoven fabric, an ion exchange membrane, etc. are arranged between them, and electric energy is added. By doing so, ionic species, gas components, active species, etc. are generated and water is reformed.

  The membrane used in the electrolyzer is mainly an electrically neutral membrane such as a non-woven fabric. However, depending on the ion species, such as a cation exchange membrane or an anion exchange membrane, the passage of the membrane is inhibited. A membrane is also used.

  The purpose of using a neutral membrane as a membrane is to prevent hydrogen ions, hydroxide ions, and the like generated by water electrolysis from being mixed by water diffusion and water flow, resulting in failure to obtain desired electrolyzed water. The purpose of using an ion exchange membrane is to obtain desired product water more efficiently by further preventing the movement of cations or anions.

  In electrolysis of dilute water such as tap water, river water, and well water, it is important to reduce the distance between the anode and the cathode in order to reduce the electrolysis voltage. Usually, in the case of an electrolytic cell in which a pair of electrodes and a diaphragm are sandwiched between them, the smaller the distance between the electrodes, the better, and the electrolysis voltage can be further reduced.

  However, in practice, in order to allow water to flow between the electrodes, it is necessary to take a certain distance between the electrodes, and the distance between the anode and the cathode is 2 mm to 10 mm in consideration of water channel clogging due to precipitation of calcium in the water. Usually, a diaphragm is provided in the middle. Usually, the diaphragm does not have rigidity, so it is partially reinforced with a polymer material or the like and supported so as to be positioned between the electrodes to form a cathode cell (cathode channel) and an anode cell (anode channel).

  For example, Patent Document 2 discloses an electrolytic cell in which the diaphragm and the electrode are in contact with each other, and either or both of the electrodes and the diaphragm are arranged in contact with each other, and water is applied to the electrode surface opposite to the surface in contact with the diaphragm. Electrolyze through. In this case, the main purpose is to use an electrolyte membrane for the diaphragm and not to change the pH of water.

  Also, in order to use water discharged from the cathode side, it is necessary to reduce the amount of drainage from the anode side as much as possible, and in order to use water discharged from the anode side, it is necessary to reduce the amount of water discharged from the cathode side as much as possible. is necessary. For example, when cathode water is desired, reducing the amount of drainage on the anode side can be achieved by controlling the amount of water entering the anode tank. However, when the amount of water entering the anode tank is extremely reduced, the speed at which water passes through the anode tank decreases, so that the residence time in the anode tank becomes long. Then, the concentration of hydrogen ions generated by electrolysis increases in the anode tank, and the proportion of hydrogen ions passing through the electrolytic diaphragm increases. As a result, the pH of the cathodic water is kept low.

  Here, when electrolysis is performed when the anode is brought into contact with the diaphragm and water is passed between the other side of the diaphragm and the cathode, hydroxide ions and hydrogen are similarly produced at the cathode. appear. At the anode, the water that has permeated the membrane undergoes an electrolytic reaction near the contact surface between the membrane and the anode to generate oxygen and hydrogen ions. At this time, there is water resistance only between the cathode and the diaphragm, and the electrolysis voltage is halved. However, since there is little water in the vicinity of the contact surface with the anode, the concentration of hydrogen ions is high, and the hydrogen ions pass through the membrane and flow into the cathode chamber, resulting in cancellation of the hydroxide ions generated at the cathode.

In order to prevent this, the water-permeable anode can be brought into contact with the diaphragm, or the non-water-permeable anode can be brought close to the diaphragm to forcibly create a flow of water passing through the diaphragm from the cathode cell side and perform electrolysis. In this case, it can be removed out of the system as waste water so that the concentration of hydrogen ions generated in the vicinity of the contact surface between the diaphragm and the anode does not increase. Even when the water-permeable cathode is in contact with the diaphragm or the non-water-permeable cathode is in proximity to the diaphragm, the flow of water passing through the diaphragm is forcibly created from the anode tank side, and the vicinity of the contact surface between the film and the cathode It can also be removed from the system so that the concentration of hydroxide ions produced in the above does not increase. As a result, desired cathodic water and anodic water can be produced with a low voltage and a small drainage amount.
JP-A-55-1822 JP 2003-245669 A

  However, in this case, since the diaphragm and the water-permeable electrode are in contact with each other or the non-water-permeable electrode is in close proximity, the diaphragm is deteriorated by active species generated by the redox reaction of water on the electrode surface or chlorine generated from chloride ions. I may receive it.

  Accordingly, an object of the present invention is to provide an electrolyzed water generating apparatus in which a diaphragm is not deteriorated by chlorine or the like in order to solve such a conventional problem.

  Usually, in an electrolytic cell in which a pair of electrodes (anode and cathode) and a diaphragm are provided between them, a hydrophilic PTFE membrane or the like is used as the diaphragm. It is processed and used as a film in a state of being bonded to a nonwoven fabric such as PP or PE.

  In this case, the function of the nonwoven fabric is only good handling, and the direction of the front and back is not particularly limited. In many cases, a PTFE surface subjected to a hydrophilic treatment is installed on the side that becomes the anode during normal flowing water electrolysis, and the nonwoven fabric side is often used on the side that becomes the cathode. However, when the diaphragm is brought into contact with the water-permeable electrode as in this case, or when it is brought close to the non-water-permeable electrode, it is necessary to define the direction of the membrane.

  In the first aspect of the present invention, a cathode, an anode disposed opposite to the cathode at a predetermined distance, a diaphragm provided in contact with or in proximity to the anode, and the cathode and the diaphragm An electrolyzed water generating device for generating electrolyzed water by applying a voltage between the cathode and the anode. A laminated structure composed of two or more kinds of film materials of a coarse-grained film material and a finer-grained film material, and the coarse-grained film material is brought into contact with or close to the anode, and the fine-grained film material is placed in the cathode flow It is arranged on the roadside.

  In the invention according to claim 2, the anode, the cathode disposed opposite to the anode at a predetermined distance, the diaphragm provided in contact with or close to the cathode, and the anode and the diaphragm An electrolyzed water generating device for generating electrolyzed water by applying a voltage between the anode and the cathode, comprising an anode flow path provided between the anode and the outlet to circulate the raw water from the inlet to the outlet, A laminated structure composed of two or more kinds of film materials of a coarse-grained film material and a finer-grained film material, the coarse-grained film material is brought into contact with or close to the cathode, and the fine-grained film material is made into the anode flow It is arranged on the roadside.

  According to a third aspect of the present invention, there are provided a cathode, an anode disposed opposite to the cathode at a predetermined distance, a diaphragm provided in contact with or close to the anode, and the cathode and the diaphragm. An electrolyzed water generating device for generating electrolyzed water by applying a voltage between the cathode and the anode. A three-layer laminated structure in which a fine-grained film material is sandwiched between both sides with a coarser film material, with one coarse-film material in contact with or close to the anode, and the other eye A rough membrane material is arranged on the cathode channel side.

  According to a fourth aspect of the present invention, an anode, a cathode disposed opposite to the anode at a predetermined distance, a diaphragm provided in contact with or close to the cathode, and the anode and the diaphragm An electrolyzed water generating device for generating electrolyzed water by applying a voltage between the anode and the cathode, comprising an anode flow path provided between the anode and the outlet to circulate the raw water from the inlet to the outlet, A three-layered structure in which a fine-grained film material is sandwiched between both sides with a coarser film material, and one coarse-film material is in contact with or close to the cathode, and the other eye is formed. The rough membrane material is arranged on the anode flow path side.

  The invention according to claim 5 is the electrolyzed water generating apparatus according to any one of claims 1 to 4, wherein a material having high chlorine resistance is used for the coarse film material. And

  The invention according to claim 6 is the electrolyzed water generating apparatus according to any one of claims 1 to 4, wherein a material having high chlorine resistance is used for the fine membrane material. And

  On the surface of the water-permeable electrode and the surface of the non-water-permeable electrode, active species generated by the redox reaction of water and chlorine generated from chloride ions are generated during electrolysis, affecting the diaphragm in contact with it and adjacent diaphragms. And may promote the deterioration of the diaphragm.

  For this reason, in the case of electrolysis while allowing the diaphragm to pass through, as in the present invention, the membrane material with a coarse mesh is brought into contact with the water-permeable electrode or in close proximity to the non-water-permeable electrode. Is arranged on the cathode channel or anode channel side. By doing this, the fine-grained membrane material greatly changes its water permeability with a slight deterioration, but the coarse-grained membrane material originally does not affect the water permeability, so even if it deteriorates, its effect Is small.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

“Embodiment 1”
FIG. 1 is an overall configuration diagram showing an electrolyzed water generating system to which the electrolyzed water generating apparatus of the present invention is applied, and FIG. 2 is a cross-sectional view of the electrolyzed water generating apparatus.

  First, a schematic configuration of the electrolyzed water generation system will be briefly described with reference to FIG. In the electrolyzed water generation system, when the faucet 1 is opened, an electrolytic cell (anode channel 4 or cathode channel 5) is passed through a water purification cartridge 2 and a Ca-added tube (added Ca to promote electrolysis in the electrolytic cell) 3. ) Is supplied with water. Whether or not water is supplied from the faucet 1 is detected by the flow sensor 6. Alkaline water generated in the cathode chamber is discharged from the water discharge pipe 9 through the reserve tank 8 connected to the outlet 7 of the cathode channel 5. On the other hand, the acidic water generated in the anode chamber is drained from the drain port 12 of the drain pipe 11 connected to the outlet 10 of the anode channel 4.

  At this time, the drain valve 14 communicating with the inlet 13 to the cathode channel 5 and the drain valve 16 communicating with the drain outlet 15 of the anode channel 4 are closed. When the faucet 1 is closed, the polarities of the cathode 17 and the anode 19 are reversed, and a reverse electric cleaning is performed by applying a voltage between these electrodes for a certain period of time. At this time, air enters from the water discharge pipe 9 due to the water head pressure, but since the reserve tank 8 is interposed, the air flows into the electrolytic cell with a delay compared to the case without the reserve tank 8. . In this Embodiment, the said fixed time is set within the time until air flows into an electrolytic cell. When the reverse electric cleaning is completed after a certain time has elapsed, the drain valves 14 and 16 are opened to drain the water in the electrolytic cell.

  In addition, the reserve tank 8 of FIG. 1 may be used as needed in this electrolyzed water generation system, or may not be used.

  As shown in FIG. 2, the electrolyzed water generating apparatus according to the present embodiment includes a cathode 17, an anode 19 disposed opposite to the cathode 17 at a predetermined distance, and a space between the cathode 17 and the anode 19. The cathode 18 is disposed between the cathode 18 and the diaphragm 18, and the cathode channel (cathode tank) 5 that circulates raw water from the inlet pipe 50 to the outlet pipe 51, and the anode 19. The water conditioner includes an anode flow path (anode tank) 4 provided on the opposite side of the flow path 5 and generates electrolyzed water by applying a voltage between the cathode 17 and the anode 19.

  In particular, in the electrolyzed water generating apparatus of the present embodiment, the diaphragm 18 is brought into contact with the anode 19, and the diaphragm 18 is divided into two kinds of films, that is, a film material 18B having a coarse mesh and a film material 18A having a finer mesh. It has a laminated structure made of materials. Further, the coarse film material 18B is brought into contact with the anode 19, and the fine film material 18A is arranged on the cathode channel 5 side.

  The anode 19 is, for example, a titanium mesh electrode plated with Pt, and is provided in contact with one surface of the diaphragm 18. By bringing the anode 19 into contact with the diaphragm 18, the water channel between them can be eliminated, and the electrolytic voltage can be reduced. On the back surface (the surface opposite to the surface in contact with the diaphragm 18) of the anode 19, the diaphragm 18 and the anode 19 are passed from the cathode channel 5 to drain water into the anode channel 4, and the drain pipe 55. To discharge. In this case, the anode channel 4 is a drainage channel.

  For the cathode 17, for example, a flat electrode is used. In the cathode flow path 5 formed between the cathode 17 and the diaphragm 18, raw water such as tap water, river water, and well water flows from the inlet pipe 50 to the inside thereof.

  For the diaphragm 18, for example, a laminated film in which a non-woven fabric (coarse membrane material 18 </ b> B) having a coarse mesh and a non-woven fabric (fine membrane material 18 </ b> A) having a finer mesh are bonded to each other is used. A non-woven fabric such as polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE) or the like is used for the coarse film material 18B. On the other hand, a non-woven fabric such as polytetrafluoroethylene (PTFE) is used for the fine film material 18A.

  When electrolysis is performed while passing through the diaphragm 18 from the cathode flow path (cathode tank) 5 side, the amount of anode drainage depends greatly on the amount of water flow caused by the fineness of the diaphragm 18. When the diaphragm 18 is only a nonwoven fabric, for example, since it has an average pore diameter of 10 μm or more, the mesh is rough and water flows without resistance. Therefore, the amount of water flow cannot be controlled, and water returning to the cathode cell is also generated. In the case of fine PTFE or the like, there is one having a porous structure by stretching, and in this case, it has an average pore diameter of 0.1 μm to 5 μm. Therefore, it is suitable for controlling the amount of water passing through the diaphragm 18 and can be used as the diaphragm 18 for electrolysis while passing water.

  In the electrolyzed water generating apparatus having such a configuration, the raw water is put into the cathode channel 5 through the inlet pipe 50. In the cathode channel 5, the raw water partially passes through the diaphragm 18 and further passes through the anode 19 and flows as drainage. At this time, on the surface of the anode 19, an electrolysis reaction of water as in the following formulas (1) and (2) occurs, and hydrogen ions, oxygen, and free chlorine are generated.

2H ₂ O → 4H ₊ + O ₂ + 4e ₋ (1) formula
2Cl ₋ → Cl ₂ + 2e ₋ (2) The generated hydrogen ions, oxygen and free chlorine are removed as drainage from the surface of the anode 19 by the water flowing through the diaphragm 18 forcibly. Although substances such as oxygen and free chlorine are produced on the anode 19 (on the mesh electrode), there is a water flow passing through the membrane, so the diaphragm 18 itself is always washed with water free from free chlorine and oxygen. The deterioration is small. The diaphragm 18 is pressed against the mesh electrode as the anode 19 by the water flow flowing from the cathode channel 5.

  In the cathode channel 5, water is electrolyzed on the surface of the cathode 17 by a reaction such as the following formula (3).

4H ₂ O + 4e ₋ → 4OH ₋ + 2H ₂ (3) The hydrogen generated at this time is partially dissolved in the water flowing through the cathode channel 5. At the same time as the generation of hydrogen, hydroxide ions are also generated. In the case of the present embodiment, since the hydrogen ion concentration does not increase on the anode surface, there is no difference in ion concentration on both sides of the diaphragm 18, and only specific ions (for example, hydrogen ions) do not travel back and forth during electrolysis. . For this reason, the pH of cathode water can be changed efficiently.

  Usually, in the case of electrolysis of an alkali ion water conditioner, a neutral diaphragm 18 is provided between the anode 19 and the cathode 17, and neither the anode 19 nor the cathode 17 is in contact with the diaphragm 18, and the electrolysis voltage is The extra resistance is required for the water between the anode 19 and the diaphragm 18 and the water between the cathode 17 and the diaphragm 18, but in this embodiment, the anode 19 and the diaphragm 18 are in contact with each other. Becomes only the resistance of water between the cathode 17 and the diaphragm 18. In general, in the case of electrolysis of an alkaline ionized water device, when the amount of anodic water that is drainage is reduced and reduced, the residence time of water on the surface of the diaphragm 18 on the anode 19 side is long, and specific ions (for example, hydrogen ions) Therefore, it becomes easier to move the film and go to the cathode 17 side. Thereby, the pH change of cathode water becomes small.

  On the electrode surface (including the water-permeable electrode surface and the non-water-permeable electrode surface), as described above, active species generated by the oxidation-reduction reaction of water and chlorine generated from chloride ions are generated during electrolysis. In some cases, the diaphragm 18 in contact with the diaphragm 18 is affected, and deterioration of the diaphragm 18 is promoted. For this reason, when electrolysis is performed while letting the diaphragm 18 pass through, the membrane material 18B with a coarse mesh in the diaphragm 18 having a laminated structure is brought into contact with the anode 19 as in the present embodiment.

  The fine-grained membrane material 18A greatly changes its water permeability with a slight deterioration due to chlorine, but the coarse-grained membrane material 18B originally does not affect the water permeability. small. Therefore, even if free chlorine is generated on the anode 19, the diaphragm 18 on the side in contact with the anode 19 is a coarse film material 18B, so that the influence of film deterioration due to chlorine is small.

  In addition, in the electrolyzed water generating apparatus of this invention, the same effect can be acquired also as a structure which replaced the anode 19 and the cathode 17 with the structure of FIG. Although illustration is omitted, specifically, an anode 19, a cathode 17 disposed to face the anode 19 at a predetermined distance, and a diaphragm 18 provided between the anode 19 and the cathode 17. An anode channel 4 provided between the anode 19 and the diaphragm 18 for flowing raw water from the inlet to the outlet, and a cathode flow provided on the opposite side of the anode channel 4 across the cathode 17 An electrolyzed water generating device comprising a path (cathode tank) 5 and generating electrolyzed water by applying a voltage between the anode 19 and the cathode 17, the diaphragm 18 being in contact with the cathode 17, and the diaphragm 18 is a laminated structure composed of two types of film materials, a film material 18B having a coarse mesh and a film material 18A having a finer mesh. Further, the coarse film material 18B is brought into contact with the cathode 17, and the fine film material 18A is arranged on the anode flow path 4 side.

  In the present embodiment, mesh electrodes are used as the water-permeable electrodes (cathode 17 and anode 19). However, the present invention is not limited to this, and plating electrodes, honeycomb electrodes, grating electrodes, punching metal electrodes, porous electrodes, and the like are used. Can do.

“Embodiment 2”
FIG. 3 is an enlarged cross-sectional view of a main part of the electrolyzed water generating device according to the second embodiment. In the second embodiment, unlike the first embodiment, the diaphragm 18 is not brought into contact with the anode 19, but the diaphragm 18 is brought close to the anode 19 with a slight distance. Other structures are the same as those in the first embodiment. In this structure, the diaphragm 18 is close to the anode 19 with a slight distance, but the same effect as the first embodiment can be obtained.

  In the second embodiment, similar to the first embodiment, the configuration in which the anode 19 and the cathode 17 are replaced is the same.

“Embodiment 3”
FIG. 4 is an enlarged cross-sectional view of a main part of the electrolyzed water generating device according to the third embodiment. In the third embodiment, the diaphragm 18 has a three-layered structure in which a fine-grained film material 18A is laminated so as to be sandwiched between both sides by a coarser film material 18B. Except for the diaphragm 18 having a three-layer structure, it is the same as the electrolyzed water generating apparatus of the first embodiment.

  In Embodiment 3, one of the coarse film materials 18B sandwiching the fine film material 18A at the center is brought into contact with the anode 19, and the other is arranged on the cathode flow path 5 side. For this reason, the active species generated by the redox reaction of water and the chlorine generated from chloride ions deteriorate the coarse film material 18B, but the fine film material 18A avoids deterioration. Since the coarse film material 18B originally does not affect water permeability, even when it is deteriorated, the influence is small. Further, since the coarse film material 18B is also installed in the cathode channel (cathode cell side) 5 with the fine film material 18A interposed therebetween, the fine film material 18A deteriorates even during reverse electrolysis. Escape.

  In the third embodiment, similar to the first embodiment, the same effect can be obtained by replacing the anode 19 and the cathode 17. In FIG. 4, the diaphragm 18 is brought into contact with the cathode 17 or the anode 19. However, the same effect can be obtained when the diaphragm 18 is brought close to the cathode 17 or the anode 19 with a slight gap.

“Embodiment 4”
In the fourth embodiment, the configuration of the electrolyzed water generating device itself is the same as that of the first to third embodiments, but a material having high chlorine resistance is used for the coarse film material 18B. Examples of the material having high chlorine resistance include polyethylene, polypropylene, polyethylene terephthalate, acrylic, vinyl chloride, and fluororesin.

  As described above, the coarse membrane material 18B does not originally affect the water permeability, but if the deterioration progresses, the structure itself may be destroyed, and in this case, it should normally be in contact with the water-permeable electrode. The fine film material 18A that should not be close to the non-water-permeable electrode is in contact with or close to the fine film material 18A, and the fine film material 18A is deteriorated. For this reason, the rough film material 18B is made of a material having high chlorine resistance in advance to suppress the influence.

“Embodiment 5”
In the fifth embodiment, the configuration itself of the electrolyzed water generating apparatus is the same as that of the first to third embodiments, but a material having high chlorine resistance is used for the fine membrane material 18A. The material exemplified in Embodiment 4 can be used as the material having high chlorine resistance.

  The fine membrane material 18A originally does not normally contact the water permeable electrode or is not in close proximity to the non-water permeable electrode. Therefore, the fine membrane material 18A does not deteriorate during electrolysis when the membrane is passed through. In the case of reverse electrolysis without using water (cleaning method in which positive and negative potentials are reversed from those in normal electrolysis and washing), the active species generated by the redox reaction of water in the cathode tank or the electrode inside the anode tank It will be attacked and deteriorated by chlorine generated from chloride ions. For this reason, the fine film material 18A is previously made a material having high chlorine resistance to suppress the influence.

  Note that a combination of both the fourth embodiment and the fifth embodiment may be used, that is, both the fine film material 18A and the coarse film material 18B may be made of a material having high chlorine resistance. . If it does so, the film | membrane deterioration of both film | membrane materials 18A and 18B can be prevented.

It is a whole lineblock diagram showing the electrolyzed water generating system to which the electrolyzed water generating device of the present invention is applied. 2 is a cross-sectional view of the electrolyzed water generating device according to Embodiment 1. FIG. It is sectional drawing of the electrolyzed water generating apparatus of Embodiment 2. It is sectional drawing of the electrolyzed water generating apparatus of Embodiment 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 4 ... Anode channel 5 ... Cathode channel 17 ... Cathode 18 ... Diaphragm 18A ... Fine membrane material 18B ... Coarse membrane material 19 ... Anode 50 ... Inlet tube 51 ... Outlet tube

Claims (6)

A cathode, an anode disposed opposite to the cathode at a predetermined distance, a diaphragm provided in contact with or in proximity to the anode, and provided between the cathode and the diaphragm; An electrolyzed water generating device comprising a cathode flow path that circulates to an outlet, and generating electrolyzed water by applying a voltage between the cathode and the anode,
The diaphragm has a laminated structure composed of two or more kinds of film materials of a coarse-grained film material and a finer-grained film material, and the fine-grained film material is brought into contact with or close to the anode, and the fine-grained film material An electrolyzed water generating apparatus characterized in that is disposed on the cathode channel side. An anode, a cathode disposed opposite to the anode at a predetermined distance, a diaphragm provided in contact with or in close proximity to the cathode, and provided between the anode and the diaphragm; An electrolyzed water generator comprising an anode flow path that circulates to an outlet, and generates electrolyzed water by applying a voltage between the anode and the cathode,
The diaphragm has a laminated structure composed of two or more kinds of film materials of a coarse-grained film material and a finer-grained film material, and the fine-grained film material is brought into contact with or close to the cathode, and the fine-grained film material Is disposed on the anode flow path side. A cathode, an anode disposed opposite to the cathode at a predetermined distance, a diaphragm provided in contact with or in proximity to the anode, and provided between the cathode and the diaphragm; An electrolyzed water generating device comprising a cathode flow path that circulates to an outlet, and generating electrolyzed water by applying a voltage between the cathode and the anode,
The diaphragm has a three-layer structure in which a fine film material is sandwiched between both sides with a finer film material, and one coarse film material is in contact with or close to the anode. The other rough membrane material is arranged on the cathode flow path side. An anode, a cathode disposed opposite to the anode at a predetermined distance, a diaphragm provided in contact with or in close proximity to the cathode, and provided between the anode and the diaphragm; An electrolyzed water generator comprising an anode flow path that circulates to an outlet, and generates electrolyzed water by applying a voltage between the anode and the cathode,
The diaphragm has a three-layer structure in which a fine film material is sandwiched from both sides with a coarser film material, and one coarse film material is brought into contact with or close to the cathode. The other rough membrane material is arranged on the anode flow path side. It is an electrolyzed water generating apparatus as described in any one of Claims 1-4,
An electrolyzed water generating apparatus characterized in that a material having high chlorine resistance is used for the rough membrane material. It is an electrolyzed water generating apparatus as described in any one of Claims 1-4,
An electrolyzed water generating device characterized in that a material having high chlorine resistance is used for the fine membrane material.

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