JP5150104B2 - ELECTROLYTIC CELL AND ELECTROLYTIC WATER GENERATOR HAVING THE SAME - Google Patents

Description

  The present invention relates to an electrolytic cell that electrolyzes raw water such as tap water or well water to generate alkaline ionized water or acidic ionized water, and an electrolyzed water generating device provided with the electrolytic cell. Specifically, an electrode is taken out from the inside of the electrolytic cell. Regarding technology.

  In an electrolyzed water generating apparatus that electrolyzes tap water and the like to generate alkaline ionized water and acidic ionized water, the electrode extraction structure of the electrolytic cell is, for example, spot welding a titanium electrode rod to a platinum electrode coated titanium electrode plate. A structure in which the titanium electrode rod is taken out of the electrolytic cell is known (for example, see Patent Document 1).

The titanium electrode rod described in Patent Document 1 is formed by using a round bar having a diameter of about 2.5 mm and spot-welding the round bar to a flat electrode plate.
JP-A-8-309358

  In recent years, electrolyzed water generation devices tend to shorten the distance between electrodes for the purpose of improving performance. That is, the electrolytic voltage can be lowered by shortening the distance between the electrodes.

  However, in the electrolytic cell described in Patent Document 1, there is a difficulty in taking out the electrode rod, and there is a limit in shortening the distance between the electrodes. That is, in the electrolytic cell described in Patent Document 1, since a round electrode rod is used and the extraction direction of each electrode is extracted from the same surface, the inter-electrode distance cannot be reduced more than a certain amount.

  Accordingly, the present invention aims to improve the performance by shortening the distance between the electrodes, making the assembly of the electrolytic cell easy, and providing an electrolyzed cell having high electrical and mechanical reliability and the generation of electrolyzed water provided with the same. An object is to provide an apparatus.

In order to achieve the above-mentioned object, the invention according to claim 1 comprises a cathode plate, an anode plate, and a diaphragm supported by a diaphragm holding frame in a housing to constitute a cathode cell and an anode cell, In an electrolytic cell for generating electrolyzed water by applying a voltage between the cathode plate and the anode plate, terminals connected to external terminals are respectively taken out from the cathode plate and the anode plate, and the terminals are connected to the cathode plate and the anode plate, respectively. The anode plate is formed to have substantially the same thickness as that of the anode plate, and is led out of the housing from the through hole formed in the housing. The cathode plate or the anode plate has a plurality of cathode plates or anode plates having the same shape. The terminal extraction position of the plate is set to a position shifted from the center, and the cathode plate or the anode plate is arranged so that the terminal is not overlapped .

  Invention of Claim 2 is the electrolytic cell of Claim 1, Comprising: The said terminal was formed so that it might stand substantially perpendicularly with respect to the main surface from the one side edge of the said anode plate and a cathode plate It is characterized by that.

  A third aspect of the present invention is the electrolytic cell according to the second aspect, wherein the terminal is integrally formed by extending a part of the cathode plate and the anode plate, or the cathode plate and When the anode plate is a mesh metal, it is formed by spot welding.

Invention of Claim 4 is an electrolytic cell as described in any one of Claims 1-3, Comprising: The said terminal stands | starts up vertically from the one side edge of the said cathode plate and the said anode plate The rising portion is provided with a deformation allowing portion obtained by bending a part of the terminal.

Invention of Claim 5 is an electrolytic cell as described in any one of Claim 1 to 4 , Comprising: The said terminal is from the same direction as the parting direction of the housing | casing shape | molded with a metal mold | die. It is characterized by being assembled in this housing.

Invention of Claim 6 is an electrolytic cell as described in any one of Claims 1-5 , Comprising: It prevents that the said through-hole leaks water from the said electrolytic cell to the said housing | casing outside. A sealing mechanism portion is provided.

A seventh aspect of the present invention is the electrolytic cell according to the sixth aspect , wherein the sealing mechanism part integrally forms a rubber-like elastic body on the terminal, and the rubber-like elastic body is closely attached to the through hole. It is characterized by letting it be.

The invention according to an eighth aspect is the electrolytic cell according to the sixth aspect , wherein the sealing mechanism portion is formed by integrally molding a rubber-like elastic body together with the terminal at the center of a cylindrical resin member. A rubber-like elastic body is provided on the outer periphery, and the resin component is provided in close contact with the through hole.

The invention according to claim 9 is the electrolytic cell according to any one of claims 1 to 8 , wherein a voltage is applied between the cathode plate and the anode plate to generate electrolyzed water, and the generation The electrolyzed water generating device is characterized by discharging and draining the electrolyzed water.

According to the first aspect of the present invention, since the terminal is formed with substantially the same thickness as the cathode plate and the anode plate, the distance between the electrodes is greatly shortened, unlike the case where a round bar terminal is used. It is possible to improve the performance as an electrolytic cell. In addition, according to the present invention, since it is not necessary to use an electrode rod (round bar) as a terminal, it is not necessary to consider the deformation of the electrode rod, that is, the electrolytic concentration due to the outer diameter of the rod. Therefore, it is not necessary to cover the electrode and the diaphragm with a resin or the like. Further, according to the invention, the distance between the through holes and the thickness of the housing can be ensured by shifting the terminal take-off position from the center and arranging the cathode plate or anode plate so that the terminals do not overlap. The cathode plate or anode plate can be shared .

  According to the second aspect of the present invention, since the electrode plate is formed so as to rise substantially perpendicularly to the main surface from one side edge of the electrode plate, the terminal can be taken out from an arbitrary position.

  According to the invention described in claim 3, since a part of the electrode plate is used as a terminal, the electrode can be directly taken out of the electrolytic cell, so that spot welding is not required as compared with the case where an electrode bar is used. It is possible to reduce costs and man-hours related to spot welding and masking of the welded portion.

  According to the invention described in claim 3, when the cathode plate and the anode plate cannot be extended with a flat plate, such as an expand (the electrode plate is processed into a strip shape to form an elongated hole shape). However, it is possible to ensure the shortening of the distance between the electrodes for enhancing the electrolysis efficiency by spot welding the flat terminal and taking it out of the electrolytic cell, and the efficiency can be promoted.

  According to invention of Claim 4, when the housing | casing which is a pressure vessel changes (a housing | casing is pressed outside by the internal pressure), the absolute distance of the cathode plate and anode plate which are electrode plates, and a housing | casing However, the load is easily applied to the rubber-like elastic body of the terminal portion, which is the electrode lead-out portion, but the deformation-permitting portion in which a part of the terminal is bent absorbs deformation due to the load flexibly during expansion and contraction.

According to the fifth aspect of the present invention, the inside of the electrolytic cell is always applied with a positive pressure when water is passed as compared with the outside of the casing, but the terminal is connected to the casing from the same direction as the parting direction. As a result, the draft angle of the through-hole formed in the housing can be used, and the resin joint part of the seal mechanism part, which is the terminal take-out part that is going to move outward, becomes more contracted, which is advantageous against leakage Will work. The mold for forming the housing is divided into the cavity and the core side, but the drafting and retaining mechanism is prevented by pulling out the terminal extraction part from the core side (inside, that is, the part where the diaphragm holding frame and electrode plate are inserted) This makes it possible to provide flexibility in design.

According to the sixth aspect of the present invention, since the seal mechanism portion is provided in the through hole, it is possible to prevent water leakage from the electrolytic cell to the outside of the casing.

According to the seventh aspect of the present invention, since the rubber-like elastic body is integrally molded with the terminal and the rubber-like elastic body is brought into close contact with the through hole, the terminal edge portions of the terminal, the cathode plate, and the anode plate are firmly formed. Sealed and water leakage is suppressed.

According to the eighth aspect of the present invention, since the rubber-like elastic body is integrally formed with the terminal in the center of the cylindrical resin member, it is necessary to form the entire sealing mechanism portion with a rubber-like elastic body that is easily displaced by water pressure. The volume can be reduced as much as possible. The outer periphery of the resin part is configured in a circular shape using a rubber-like elastic body (for example, a general-purpose product such as an O-ring), but the inside is a rubber-like structure as much as possible because the terminal has a flat plate shape. It is possible to reduce the volume of the elastic body. In addition, the outer portion of the electrolytic cell that is a casing is easily deformed by water pressure, but particularly when the electrode joint portion is changed, a small amount of the rubber-like elastic body reduces the amount of change of the rubber-like elastic body itself. Improve the effect.

According to the ninth aspect of the invention, it is possible to generate electrolyzed water by the electrolytic cell with improved performance, to facilitate the assembly of the electrolytic cell, and to improve the reliability electrically and mechanically. An electrolyzed water generating device that can be provided can be provided.

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

“Embodiment 1”
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 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 ion 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 tank. On the other hand, the acidic ion 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 tank.

  At this time, the drain valve 14 communicating with the inlet 13 to the cathode tank and the drain valve 16 communicating with the drain outlet 15 of the anode tank are closed. When the faucet 1 is closed, the polarity of the cathode and the anode is 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 5 with a delay compared to the case without the reserve tank 8. Become. In the present embodiment, the certain time is set within the time until air flows into the electrolytic cell 5. 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 5.

  Next, the structure of the electrolytic cell 5 will be described. 2 is a plan view of the electrolytic cell of the first embodiment, FIG. 3 is a longitudinal sectional view of the electrolytic cell of the first embodiment, FIG. 4 is an enlarged cross-sectional view of the main part of the electrolytic cell of the first embodiment, and FIG. The principal part expanded sectional view of the electrode plate part of an electrolytic cell, FIG. 6 is AA sectional drawing of FIG. 2, FIG. 7 is BB sectional drawing of FIG.

  As shown in FIGS. 2 and 3, the electrolytic cell 5 includes a cathode plate 17, two anode plates 18 disposed opposite to each other with a predetermined distance between both sides of the cathode plate 17, and each anode plate. 18, a diaphragm 19 provided in contact with one surface, two cathode tanks (cathode flow paths) 21 provided between the cathode plate 17 and the anode plate 18 for allowing raw water to flow into the interior from the inlet pipe 20, and an anode Two anode chambers (anode channels) 22 provided on the opposite side of the cathode chamber 21 with the plate 18 interposed therebetween, and a casing 23 (23A, 23B) for accommodating them are provided.

  For the cathode plate 17, for example, a rectangular electrode having a rectangular shape is used. In the cathode tank 21 formed between the cathode plate 17 and the anode plate 18, raw water such as tap water, river water, and well water flows from the inlet pipe 20 to the inside thereof.

  As the anode plate 18, similarly to the cathode plate 17, a rectangular plate-shaped water-permeable electrode is used. The anode plate 18 is a titanium mesh electrode plated with Pt as shown in FIGS. 4 and 5, for example. The anode plate 18 is disposed at a distance close to the cathode plate 17 for the purpose of improving the performance of the electrolytic cell 5 (up electrolysis efficiency by reducing the electrolysis voltage).

  For the diaphragm 19, for example, a composite film made of a nonwoven fabric such as polyethylene terephthalate (PET) is used in a porous film such as polyethylene (PE) or polytetrafluoroethylene (PTFE). The diaphragm 19 is held by insert-molding the outer peripheral edge thereof on a diaphragm holding frame 24 (24A, 24B) integrally formed of a resin such as ABS formed as a rectangular frame. The diaphragm 19 is provided in contact with one surface of the anode plate 18 facing the cathode chamber 21. If the diaphragm 19 is brought into contact with the anode plate 18, the water channel between them can be eliminated, and the electrolytic voltage can be reduced.

  The two diaphragm holding frames 24A and 24B have a structure in which the cathode plate 17 is sandwiched and abutted against each other, and the outer periphery is fixed by welding or the like to prevent water leakage from other than the diaphragm 19 except for the water passage. In addition, the diaphragm holding frame 24B discharges alkaline ionized water (indicated as alkaline water in FIG. 3) to the inlet water passage 26 for guiding the raw water flowing from the inlet pipe 20 to the cathode tank 21 and the water discharge pipe 27. A water discharge passage 28 is provided. Further, seal members 29 such as O-rings are provided on the outer peripheral surfaces on the front end side of the introduction water passage 26 and the water discharge water passage 28.

  The cathode chamber 21 is formed between a cathode plate 17 provided in the center, an anode plate 18 disposed in proximity to the cathode plate 17, and a diaphragm 19 inside the anode plate 18. In the first embodiment, two cathode chambers 21 are provided.

  The anode tank 22 is provided on the back surface of the anode plate 18 (the surface opposite to the surface in contact with the diaphragm 19). Water that passes from the cathode tank 21 through the diaphragm 19 and the anode plate 18 flows through the anode tank 22.

  The housing 23 includes two housings 23A and 23B that house therein the cathode plate 17, the anode plate 18, the diaphragm 19, and the diaphragm holding frame 24 that constitute the cathode tank 21 and the anode tank 22. In addition to the inlet pipe 20 and the water discharge pipe 27 described above, the one housing 23A has through holes 33 that lead out the anode terminal 31 of one anode plate 18 and the cathode terminal 32 of the cathode plate 17 to the outside of the housing, respectively. A cylindrical terminal lead-out portion 34 is formed. The other housing 23B has a drain pipe 35 for draining acidic ionized water (expressed as acidic water in FIG. 3), and a through hole 33 through which the anode terminal 31 of the other anode plate 18 is led out of the housing. A cylindrical terminal lead-out portion 34 is formed.

  After the cathode plate 17, the anode plate 18, the diaphragm 19 and the diaphragm holding frame 24 are sequentially assembled in one casing 23A, the other casing 23B is fixed by an assembly screw 37 via a packing 36. The housings 23A and 23B are housed. An anode external terminal 38 and a cathode external terminal 39, which are faston terminals, are connected to the anode terminal 31 and the cathode terminal 32 which are led out of the casing from the terminal lead-out portions 34, respectively.

  In the electrolytic cell 5 having such a configuration, the raw water flows into the cathode cell 21 through the inlet pipe 20. In the cathode chamber 21, the raw water partially passes through the diaphragm 19 and further passes through the anode plate 18 and flows as drainage. At this time, on the surface of the anode plate 18, 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 plate 18 by the water flowing through the diaphragm 19 forcibly. Further, the diaphragm 19 is pressed against the mesh electrode which is the anode plate 18 by the water flow flowing from the cathode chamber 21.

  In the cathode chamber 21, water is electrolyzed on the surface of the cathode plate 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 chamber 21. At the same time as the generation of hydrogen, hydroxide ions are also generated. The alkaline ionized water generated by electrolysis in this manner is discharged from the water discharge pipe 27, and the acidic ion water is discharged from the drain pipe 35.

  In the electrolytic cell 5 configured as described above, a terminal for applying a voltage to the cathode plate 17 and the anode plate 18 needs to be taken out of the housing 23 for electrolysis. Thus, when the terminal is taken out by spot welding the anode electrode rod 100 and cathode electrode 101 in the shape of a round bar to the cathode plate 17 and the anode plate 18, the diaphragm 19 is held in order to suppress the concentration of electrolysis due to the outer diameter. The centralized electrolysis prevention guide 102 must be installed on the frame by ABS or the like. In order to shorten the distance between the electrodes, it is necessary to reduce the diameter of the anode electrode rod 100 and the cathode electrode rod 101 or to shift the electrode position. Shortened terminal removal is difficult.

  Therefore, in the present embodiment, the anode terminal 31 and the cathode terminal 32 are made to have substantially the same thickness as the cathode plate 17 and the anode plate 18 as shown in FIGS. 39, and is formed so as to rise substantially perpendicularly to the main surfaces 18a and 17a from one side edge of the anode plate 18 and the cathode plate 17. The anode terminal 31 and the cathode terminal 32 are integrally formed by extending a part of the cathode plate 17 and the anode plate 18. For example, when a flat electrode plate is punched into the shape of the cathode plate 17 and the anode plate 18, the anode terminal 31 and the cathode terminal 32 are formed at the same time, and the elongated terminal portions are bent substantially vertically.

  By integrally forming the anode terminal 31 and the cathode terminal 32 by extending a part of the anode plate 18 and the cathode plate 17, the conventional spot welding work can be eliminated, and the number of parts and assembly man-hours can be reduced. Can be achieved.

  The two anode terminals 31 are taken out from the one surface side and the other surface side of the housing 23 in consideration of the connection workability with the anode external terminal 38 and securing the thickness of the housing 23. Similarly, the cathode terminal 32 is taken out from the one surface side of the housing 23 in consideration of securing the thickness of the housing 23 at a position where it does not interfere with the anode terminal 31. Both the anode terminal 31 and the cathode terminal 32 are assembled from the same direction as the dividing direction of the two casings 23A and 23B formed by a mold. Since the housing 23 tends to bulge to the outside when an internal pressure is applied, a retaining effect can be obtained by assembling a terminal, an electrode plate, or the like from the same direction as the dividing direction of the housings 23A and 23B. Further, by providing the terminal outlet in the mold dividing direction of the housings 23A and 23B, the assemblability is facilitated, and the mounting portion is chamfered 50 when mounting a resin component 40 or the like of a seal mechanism portion to be described later. This facilitates mounting and prevents the resin component 40 from coming off.

  One anode terminal 31 is led out of the casing through a through hole 33 of a terminal lead-out portion 34 formed in one casing 23A. The other anode terminal 31 is led out from the through hole 33 of the terminal lead-out portion 34 formed in the other housing 23B opposite to the anode terminal 31. Similarly, the cathode terminal 32 is led out from the through hole 33 of the terminal lead-out portion 34 formed in the one housing 23A.

  The through hole 33 is provided with a seal mechanism for preventing water from leaking from the inside to the outside of the housing. The seal mechanism part is formed by integrally molding a rubber-like elastic body 41 together with terminals (anode terminal 31 and cathode terminal 32) at the center of a cylindrical resin member 40, and an O-ring 42 which is a rubber-like elastic body on the outer periphery of the resin component 40. And the resin component 40 is provided in close contact with the through-hole 33. The seal mechanism is provided on the anode terminal 31 side and the cathode terminal 32 side, respectively, and both have the same structure.

  The resin member 40 is formed as a cylindrical body that can be press-fitted into the through hole 33. At the center of the resin member 40, a rubber-like elastic body 41 rich in elasticity, in which a terminal is integrally formed, is provided. The rubber-like elastic body 41 seals between the inside of the housing and the terminal. For example, rubber such as nitrile rubber (NBR), ethylene propylene rubber (EPDM), or silicon rubber is preferably used. Since the rubber-like elastic body 41 is easily deformed by the water pressure generated in the housing 23, it is desirable that the volume thereof be as small as possible. Therefore, the rubber-like elastic body 41 is provided only at the center portion of the resin member 40.

  Since the terminal has a flat plate shape, the rubber-like elastic body 41 may be elliptical to reduce its capacity. By doing so, it becomes possible to suppress the surface pressure applied to the rubber-like elastic body 41 by reducing the volume of the rubber-like elastic body 41, and to ensure the reliability of the adhesion strength with the resin member 40.

  The O-ring 42 is mounted in an annular groove 43 formed on the outer peripheral surface of the resin member 40. The O-ring 42 can be displaced in the thrust direction (the axial direction of the through hole 33) by being in close contact with the inner peripheral surface of the through hole 33. This is because when the internal pressure of the electrolytic cell itself rises due to water pressure and a pressure difference with the outside occurs, displacement occurs in the positional relationship between the cathode plate 17 and the anode plate 18 and the housing 23, but the O-ring 42 By displacing in the thrust direction, it is possible to suppress water leakage due to breakage between the rubber-like elastic body 41 and the terminal edge portion. The O-ring 42 can be made of the same rubber material as the rubber-like elastic body 41 described above.

  Moreover, in this embodiment, both the anode terminal 31 and the cathode terminal 32 have the deformation | transformation permission part 44 which curved the part. The cathode plate 17 and the anode plate 18 are fixed to the diaphragm holding frame 24 in order to keep the distance between the electrodes constant. However, the cathode plate 17 and the anode plate 18 are simply attached to the housing 23 (23A, 23B), and the internal pressure is increased. Since the positional relationship slightly changes due to the rise, the deformation allowing portion 44 provided in the terminal absorbs the change and prevents water leakage.

“Embodiment 2”
In the second embodiment, the rubber-like elastic body 41 is provided only at the center of the resin member 40 and the O-ring 42 is provided on the outer periphery of the resin member 40 as in the first embodiment. A seal mechanism part is comprised only with a body.

  Specifically, as shown in FIG. 8, a rubber-like elastic body 41 having a cylindrical shape integrally formed with terminals (anode terminal 31 and cathode terminal 32) is press-fitted into the through-hole 33, and the rubber-like elastic body 41 is inserted. An annular projection 45 formed on the outer peripheral surface of the through hole 33 is brought into close contact with the inner surface of the through-hole 33 for sealing.

  In the second embodiment, the volume of the rubber-like elastic body 41 is increased with respect to the seal mechanism portion of the first embodiment, but it is sufficiently effective for preventing water leakage from the electrolytic cell. Further, since the resin member 40 and the O-ring 42 are not used, it is advantageous in terms of cost.

“Embodiment 3”
In the third embodiment, two anode plates 18 are formed by bending one electrode plate from the first embodiment, and instead of taking out the terminals from the two anode plates 18 respectively, the terminals are used in common. The two anode terminals 31 are structured to be taken out from one place of the housing 23.

  Specifically, as shown in FIG. 9, one electrode plate is bent into this shape to form a portion that becomes two anode plates 18, and an anode is formed from the side edge of the portion that becomes one cathode plate 17. The anode terminal 31 having a width that can be connected to the external terminal 38 is formed so as to rise substantially vertically, and the connecting portion 46 that connects the two anode plates 18 is led out to the outside of the diaphragm holding frame 24.

  If it is configured as in the second embodiment, the number of anode terminals 31 can be reduced, and the number of the sealing mechanism portions can be reduced as well as the need to form the lead-out portion of the anode terminal 31 in the housing 23. In addition to the reduction effect, it is possible to reduce the number of parts and the number of assembly steps. Further, the portion of the anode plate 18 that does not contribute to electrolysis is masked to eliminate the platinum coating, whereby the amount of platinum can be reduced and the cost can be reduced.

“Embodiment 4”
In the fourth embodiment, when the anode plate 18 is a mesh metal such as an expand, it is difficult to integrally form the anode terminal 31 by extending from the mesh metal. Therefore, a flat plate having the same thickness as the anode plate 18 is used. The shaped terminal is spot welded to the anode plate 18 made of mesh metal.

  Specifically, as shown in FIGS. 10 and 11, a plate-shaped terminal having the same thickness as the anode plate 18 is prepared as the anode terminal 31, and the anode terminal 31 is spot welded to the anode plate 18 made of mesh metal. To do. The spot welded portion 47 is provided, for example, at two positions on the surface that does not face the cathode plate 17 in order to ensure bonding reliability and avoid electrolytic concentration.

  As described above, according to the fourth embodiment, even when the anode plate 18 made of a mesh metal that is difficult to be integrally formed by extending the anode terminal 31 from the anode plate 18 is used, the flat plate-shaped terminal is spot-welded. Thus, the anode terminal 31 can be taken out of the housing.

“Embodiment 5”
In the fifth embodiment, the position where the anode terminal 31 is taken out is set at a position shifted from the center, and the anode terminal 31 is shifted so as not to overlap, and the two anode plates 18 and 18 are arranged.

  Specifically, as shown in FIGS. 12 and 13, the anode terminal 31 is integrally formed by extending from a portion shifted in any direction from the longitudinal center position C of the anode plate 18, The anode terminals 31 are reversed so as not to overlap each other. By doing so, the number of parts can be reduced by preparing two anode plates 18 of one kind without using two kinds of anode plates 18 with different positions for taking out the anode terminal 31.

  Moreover, the thickness of the housing | casing 23 can fully be ensured by shifting the taking-out position of the two anode terminals 31, and arrange | positioning an electrode. This is an effective means when there are a plurality of anode plates 18 as in the fifth embodiment, when the terminal extraction position is provided on the same surface of the housing 23, or when the electrodes are shared by single-side plating.

  The case where the electrode is shared by single-sided plating means that the surface necessary for electrolysis is basically only the surface in contact with the diaphragm, so that only that surface needs to be plated, and the anode tank side is unnecessary. In the case of single-sided plating, it is necessary to invert, but by shifting the take-out position, the position naturally shifts at the time of inversion, so that the casing thickness can be ensured.

  Further, in the fifth embodiment, as shown in FIGS. 13 and 14, as in the first embodiment, a deformation allowing portion 44 is provided in a part of the anode terminal 31 as a countermeasure against displacement due to an increase in internal pressure in the housing 23. Further, the anode terminal 31 including the cathode terminal 32 is arranged on the same straight line. By doing so, the distance between the electrodes can be shortened and the electrolytic cell 5 can be made thin.

"Other embodiments"
In the electrolytic cell to which the present invention is applied, the cathode plate 17 is arranged in the center, and two anode plates 18 are arranged on both sides of the cathode plate 17, but the anode plate 18 is arranged in the center. A similar effect can be obtained by an electrode structure in which two cathode plates 17 are arranged on both sides of the anode plate 18.

It is a whole lineblock diagram showing the electrolyzed water generating system of this embodiment. 2 is a plan view of the electrolytic cell of Embodiment 1. FIG. 2 is a longitudinal sectional view of the electrolytic cell of Embodiment 1. FIG. 2 is an enlarged cross-sectional view of a main part of the electrolytic cell of Embodiment 1. FIG. 2 is an enlarged cross-sectional view of a main part of an electrode plate portion of the electrolytic cell of Embodiment 1. FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. FIG. 6 is an enlarged cross-sectional view of a main part of a terminal take-out portion showing an example in which the seal mechanism portion is configured only by a rubber-like elastic body according to the second embodiment. It is sectional drawing of the electrolytic cell which shows Embodiment 3 and shows the example which bend | folded in this character shape from one electrode plate, and formed two anode plates. It is a principal part expanded sectional view of the terminal taking-out part which shows Embodiment 4 and shows the example which carried out the spot welding of the terminal to the anode plate which is a mesh metal. It is a principal part enlarged plan view of the terminal extraction part which shows Embodiment 4 and shows the example which carried out the spot welding of the terminal to the anode plate which is a mesh metal. It is sectional drawing of the electrolytic cell of Embodiment 5. FIG. 9 is a plan view illustrating an example in which an anode plate in which a terminal is taken out at a position eccentric from the center position is arranged so that the terminals do not overlap with each other, showing Embodiment 5. It is a figure which shows Embodiment 5 and shows the example which has arrange | positioned the terminal of a cathode plate and an anode plate on the same straight line. It is a figure which shows the electrode structure which carried out spot welding of the electrode rod of a round bar shape to an electrode plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 ... Electrolytic cell 17 ... Cathode plate 18 ... Anode plate 19 ... Diaphragm 21 ... Cathode cell 22 ... Anode cell 23 ... Housing 24 ... Diaphragm holding frame 31 ... Anode terminal 32 ... Cathode terminal 33 ... Through-hole 34 ... Terminal lead-out part 40 ... Resin member 41 ... Rubber elastic body 42 ... O-ring 44 ... Deformation permitting part

Claims (9)

A cathode plate, an anode plate, and a diaphragm supported by a diaphragm holding frame are accommodated in a housing to form a cathode cell and an anode cell, and a voltage is applied between the cathode plate and the anode plate to generate electrolyzed water. In the electrolytic cell
Terminals connected to external terminals are respectively taken out from the cathode plate and the anode plate, the terminals are formed to have substantially the same thickness as the cathode plate and the anode plate, and the terminals are formed from the through holes formed in the housing. To
The cathode plate or anode plate having the same shape is set to a position where the terminal extraction position of the cathode plate or anode plate is shifted from the center, and the terminal is shifted so as not to overlap. An electrolytic cell in which plates are arranged. The electrolytic cell according to claim 1,
The electrolytic cell characterized in that the terminal is formed so as to rise substantially perpendicularly to a main surface from one side edge of the anode plate and the cathode plate. The electrolytic cell according to claim 2,
The terminal is formed integrally by extending a part of the cathode plate and the anode plate, or formed by spot welding when the cathode plate and the anode plate are mesh metal. Electrolytic tank. The electrolytic cell according to any one of claims 1 to 3, wherein
The electrolytic cell characterized in that the terminal is provided with a deformable portion in which a part of the terminal is bent at a rising portion that rises vertically from one side edge of the cathode plate and the anode plate. The electrolytic cell according to any one of claims 1 to 4 , wherein
The electrolytic cell according to claim 1, wherein the terminal is assembled to the casing from the same direction as a mold splitting direction of the casing formed by a mold. The electrolytic cell according to any one of claims 1 to 5 , wherein
The electrolytic cell, wherein the through-hole is provided with a seal mechanism portion that prevents water leakage from the electrolytic cell to the outside of the housing. The electrolytic cell according to claim 6 ,
The electrolysis cell, wherein the sealing mechanism part is formed by integrally molding a rubber-like elastic body on the terminal, and the rubber-like elastic body is brought into close contact with the through hole. The electrolytic cell according to claim 6 ,
The sealing mechanism part is formed by integrally molding a rubber-like elastic body together with the terminal at the center of a cylindrical resin member, providing a rubber-like elastic body on the outer periphery of the resin part, and placing the resin part in close contact with the through hole An electrolytic cell characterized by the above. In the electrolytic cell as described in any one of Claims 1-8 ,
An electrolyzed water generating apparatus characterized in that electrolyzed water is generated by applying a voltage between the cathode plate and the anode plate, and the generated electrolyzed water is discharged and drained.

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