WO2010058685A1

WO2010058685A1 - Electrolyte water generator

Info

Publication number: WO2010058685A1
Application number: PCT/JP2009/068502
Authority: WO
Inventors: 喜典田中; 久徳白水
Original assignee: パナソニック電工株式会社
Priority date: 2008-11-21
Filing date: 2009-10-28
Publication date: 2010-05-27
Also published as: KR20110082581A; JP2010119990A; CN102177099A; TW201034978A; TWI393676B

Abstract

An electrolyte water generator (1) is provided with holding members (24e) that hold both ends of a barrier membrane (23) in the direction of flow in a water channel and that also construct surfaces of water channels (25, 26), and multiple regulating parts (24f) that are provided at both ends at the holding members (24e) in the direction of flow of water channels (25, 26) and that regulate the distance between the barrier membrane (23) and electrode plates (21, 22). Thickness (t1), in the thickness direction of the barrier membrane (23), in a portion (24m) of the holding member (24e) that is connected to the barrier membrane (23) at the downstream end in the flow direction of water channels (25, 26) and that constructs a surface of the water channels is no greater than thickness (t2) of the barrier membrane (23).

Description

Electrolyzed water generator

The present invention relates to an electrolyzed water generating apparatus.

Conventionally, an electrolyzed water generating device that electrolyzes water in an electrolyzer to generate electrolyzed water is known (see, for example, Patent Document 1).
As an electrolytic cell of such an electrolyzed water generating apparatus, as shown in FIGS. 16 and 17, a diaphragm 123 and a cathode plate 121 and an anode, which are a pair of electrode plates arranged to face each other with the diaphragm 123 in between. There is an electrolytic cell 105 having a plate 122 and a casing 124 that houses and holds the cathode plate 121, the anode plate 122, and the diaphragm 123. In the electrolytic cell 105, a cathode water passage 125 and an anode water passage 126 are formed as a pair of water passages. The cathode water passage 125 is formed between the cathode plate 121 and the diaphragm 123, while the anode water passage 126 is formed between the anode plate 122 and the diaphragm 123.

The casing 124 is formed with a first inlet 124 a that is an inlet of the cathode water passage 125 and a second inlet 124 b that is an inlet of the anode water passage 126 at one end, while the cathode 124 is at the other end. A first outlet 124 c that is an outlet of the water passage 125 and a second outlet 124 d that is an outlet of the anode water passage 126 are formed.

The casing 124 includes a substantially rectangular frame-shaped holding member 124e to which the diaphragm 123 is fixed, a plurality of cylindrical protrusion-shaped defining portions 124f provided on the holding member 124e, and a pair of pressing the cathode plate 121 and the anode plate 122. Holding plate 124g.

The holding member 124e has a pair of side wall parts 124h and a pair of connecting parts 124i that connect the pair of side wall parts 124h. The connecting portion 124i is formed thicker than the diaphragm 123, and the end of the diaphragm 123 is fixed.

In this electrolytic cell 105, when a voltage is applied between the cathode plate 121 and the anode plate 122, water flowing into the cathode water passage 125 and the anode water passage 126 from the first inlet 124a and the second inlet 124b is electrically supplied. Disassembled. In the cathode water passage 125, alkali ion water (cathode water) is generated at the interface between the cathode plate 121 and water, and in the anode water passage 126, acidic water (anode water) is generated at the interface between the anode plate 122 and water. The

JP-A-10-298791

By the way, in such an electrolyzed water generating apparatus, components such as CaCO ₃ and Mg (OH) ₂ dissolved in water are deposited, and the cathode water passage 125 and the anode water passage 126 of the electrolytic cell 105 are used. The

water passages

125 and 126 are gradually blocked, and there is a problem that the life of the electrolyzed water generating device is shortened.

Therefore, an object of the present invention is to extend the life of the electrolyzed water generator.

One aspect of the present invention includes a diaphragm, a pair of electrode plates disposed opposite to each other with the diaphragm interposed therebetween, and a pair of water passages passing between the electrode plate and the diaphragm. In the electrolyzed water generating apparatus that generates electrolyzed water from the water flowing through the water flow path by applying a voltage between the electrode plates, the both ends of the diaphragm in the water flow direction of the water flow path are held and the water flow path A holding member that constitutes the road surface, and a plurality of defining portions that are provided at both ends of the holding member in the direction of water passage of the water passage, and that define the distance between the diaphragm and the electrode plate, The thickness in the thickness direction of the diaphragm in the portion connected to the diaphragm at the downstream end of the holding member in the direction of water flow of the water channel, and constituting the road surface of the water channel, It is an electrolyzed water production | generation apparatus which is below the thickness of the said diaphragm.

Another aspect of the present invention includes a diaphragm, a pair of electrode plates disposed opposite to each other with the diaphragm interposed therebetween, and a pair of water passages passing between the electrode plate and the diaphragm. In the electrolyzed water generating apparatus for generating electrolyzed water from the water flowing through the water flow path by applying a voltage between the electrode plates, the both ends of the diaphragm in the water flow direction of the water flow path are held and the water flow is made. A holding member that configures a road surface of the water channel, and a plurality of defining parts that are provided at both ends of the holding member in the direction of water flow of the water channel and that define the distance between the diaphragm and the electrode plate. The downstream end portion of the holding member in the water flow direction of the water passage is provided with the two defining portions arranged at a distance from each other, and the downstream end of the holding member A part of the diaphragm is disposed between the two defining parts in the part. A recessed portion is formed, said diaphragm positioned in the recess is electrolyzed water producing apparatus constituting the road surface of the water passage.

It is a lineblock diagram showing roughly the electrolyzed water generating device concerning a 1st embodiment of the present invention. It is a disassembled perspective view which shows the electrolytic cell concerning 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the electrolytic cell concerning 1st Embodiment of this invention, Comprising: (a) is a front view, (b) is the sectional view on the AA line of (a). 3A is a cross-sectional view taken along line BB in FIG. 3A, and FIG. 3B is a cross-sectional view taken along line CC in FIG. It is a figure which shows the holding member concerning 1st Embodiment of this invention, Comprising: (a) is a front view, (b) is the DD sectional view taken on the line of (a). It is a graph which shows the relationship between pH and the dissolved material in water. It is a graph which shows the relationship between pH and the solubility of calcium carbonate in water. It is a disassembled perspective view which shows the electrolytic cell concerning 2nd Embodiment of this invention. It is a figure which shows the electrolytic cell concerning 2nd Embodiment of this invention, Comprising: (a) is a front view, (b) is the EE sectional view taken on the line of (a). 9A is a sectional view taken along line FF in FIG. 9A, and FIG. 9B is a sectional view taken along line GG in FIG. 9A. 4A and 4B are diagrams showing a holding member according to a second embodiment of the present invention, where FIG. 5A is a front view, and FIG. 5B is a cross-sectional view taken along the line HH in FIG. It is a disassembled perspective view which shows the electrolytic cell concerning 3rd Embodiment of this invention. It is a figure which shows the electrolytic cell concerning 3rd Embodiment of this invention, (a) is a front view, (b) is the II sectional view taken on the line of (a). 13A is a sectional view taken along line JJ in FIG. 13A, FIG. 13B is a sectional view taken along line KK in FIG. 13A, and FIG. 14C is an enlarged view of a portion L in FIG. It is a figure which shows the holding member concerning 3rd Embodiment of this invention, Comprising: (a) is a front view, (b) is the MM sectional view taken on the line of (a). It is a disassembled perspective view which shows the conventional electrolytic cell. FIG. 17 is a cross-sectional view of a conventional electrolytic cell, where (a) is a cross-sectional view of a portion corresponding to the NN line of FIG. 16, and (b) is a cross-sectional view of a portion corresponding to the PP line of FIG. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that similar components are included in the following embodiments. Therefore, common reference numerals are given to those similar components, and redundant description is omitted.

(First Embodiment) FIGS. 1 to 5 show a first embodiment of the present invention, FIG. 1 is a schematic diagram showing an electrolyzed water generating device, and FIG. 2 is an exploded perspective view showing an electrolyzer. 3A and 3B are diagrams showing an electrolytic cell, in which FIG. 3A is a front view, FIG. 3B is a sectional view taken along the line AA in FIG. 4A, and FIG. 4B is a cross-sectional view taken along the line CC of FIG. 3A, FIG. 5 is a view showing the holding member, FIG. 4A is a front view, and FIG. It is the DD sectional view taken on the line of (a).

As shown in FIG. 1, the electrolyzed water generating apparatus 1 includes a water purification unit 4 that purifies water supplied from a raw water pipe 2 such as a water pipe, and alkaline ionized water (electrolyzed water) by electrolyzing the purified water. From the electrolyzer 5 for generating cathode water) and acidic water (anodic water), a water discharge pipe 9 for discharging alkaline ionized water to the outside of the apparatus, a drain port 17 for discharging acidic water to the outside of the apparatus, and the raw water pipe 2 A flow sensor 6 for detecting the supply of water and a control unit (not shown) for controlling each part of the electrolyzed water generating device 1 are provided. Here, the water is, for example, tap water, well water, river water, or the like.

The raw water pipe 2 is connected to the electrolyzed water generating device 1 via a flow path switch 3. The flow path switching unit 3 can switch whether the water in the raw water pipe 2 is introduced into the electrolyzed water generating apparatus 1 or whether the water is allowed to flow out without passing through the electrolyzed water generating apparatus 1.

The water purification unit 4 includes an adsorbent 4a such as granular or powdered activated carbon and a filter medium 4b such as a hollow fiber membrane. Water is supplied to the water purification unit 4 from the raw water pipe 2 via the flow path switch 3 and the pipe 10a. The water purification unit 4 adsorbs the impurities contained in the supplied water to the adsorbent 4a, and then filters the impurities contained in the water by the filter medium 4b to purify the water. The purified water is led out from the pipe 10b.

As shown in FIGS. 2 to 4, the electrolytic cell 5 includes a diaphragm 23, a cathode plate 21 and an anode plate 22 which are a pair of electrode plates disposed opposite to each other with the diaphragm 23 interposed therebetween, and these cathode plates 21, an anode plate 22, and a casing 24 that houses and holds the diaphragm 23. Further, a cathode water passage 25 and an anode water passage 26 are formed in the electrolytic cell 5 as a pair of water passages. The cathode water passage 25 is formed between the cathode plate 21 and the diaphragm 23, while the anode water passage 26 is formed between the anode plate 22 and the diaphragm 23. The cathode plate 21 constitutes the road surface of the cathode water passage 25, while the anode plate 22 constitutes the road surface of the anode water passage 26. The diaphragm 23 constitutes the road surface of the cathode water passage 25 and the road surface of the anode water passage 26.

For the cathode plate 21 and the anode plate 22, for example, flat electrodes formed in a rectangular shape are used. This electrode is formed by, for example, plating or baking Pt or Ir on Ti.

The diaphragm 23 is formed in a rectangular shape, for example. As this diaphragm 23, for example, a composite of a nonwoven fabric made of polyethylene terephthalate or the like in a porous film such as polyethylene or polytetrafluoroethylene is used.

The casing 24 holds the cathode plate 21, the diaphragm 23, and the anode plate 22 in a state where they are spaced apart from each other in this order. The outer shape of the casing 24 is formed in a substantially rectangular shape, and the casing 24 is provided with a first inlet 24 a that is an inlet of the cathode water passage 25 and an inlet of the anode water passage 26 at one end in the longitudinal direction. The second inflow port 24b is formed, and at the other end in the longitudinal direction, the first outflow port 24c that is the outflow port of the cathode water passage 25 and the second outflow port 24d that is the outflow port of the anode water passage 26 Is formed.

Specifically, the casing 24 includes a substantially rectangular frame-shaped holding member 24e to which the diaphragm 23 is fixed, a plurality of cylindrical protrusion-shaped defining portions 24f provided on the holding member 24e, the cathode plate 21 and the anode plate. And a pair of presser plates 24 g that hold 22. The material of the casing 24 is, for example, ABS.

The holding member 24e has a pair of elongated side wall portions 24h and a pair of connecting portions 24i that connect the pair of side wall portions 24h at both ends thereof. The holding member 24 e constitutes the road surface of the cathode water passage 25 and the road surface of the anode water passage 26.

The connecting part 24i is formed thinner than the side wall part 24h. The connecting portion 24i has a thick portion 24j that forms the outer peripheral portion of the holding member 24e, and a thin portion 24k that forms the inner peripheral portion of the holding member 24e. The thickness of the thin portion 24k (thickness in the thickness direction of the diaphragm 23) is thinner than that of the thick portion 24j. Both surfaces of the thin portion 24k are opposed to the cathode plate 21 and the anode plate 22, respectively. On both surfaces of the thin portions 24k of the pair of connecting portions 24i facing each other (inner end surfaces of the thin portions 24k), both end portions in the water flow direction of the diaphragm 23 are fixed, for example, by bonding. Thus, the holding member 24e holds both end portions of the diaphragm 23 in the water flow direction of the cathode water passage 25 and the anode water passage 26.

The defining portion 24f is provided at both end portions (upstream end portion and downstream end portion) of the holding member 24e in the water flow direction of the cathode water passage 25 and the anode water passage 26, and the diaphragm 23 and the electrode plate (cathode water passage). 25 and the anode water passage 26), and the road surface of the cathode water passage 25 and the road surface of the anode water passage 26 are configured. Specifically, the defining portion 24f is provided at each end portion connected to the side wall portion 24h in the thin portion 24k. More specifically, the defining portion 24f is formed on a surface facing the cathode plate 21 and a surface facing the anode plate 22 in the thin portion 24k. That is, one defining portion 24f is provided at each of the four corners of the holding member 24e. The defining portion 24f may be molded as a separate part from the connecting portion 24i and fixed to the connecting portion 24i, or may be integrally formed with the connecting portion 24i. In the drawing, an example is shown in which the defining portion 24f is molded as a separate part from the connecting portion 24i and is fixed to the connecting portion 24i.

The pair of holding plates 24g is fixed to the side wall portion 24h and closes the opening of the holding member 24e. The cathode plate 21 is disposed between one pressing plate 24g and the four defining portions 24f provided on one surface of the holding member 24e, and the one pressing plate 24g and the four defining portions 24f are connected to the cathode plate. 21 is sandwiched. The anode plate 22 is disposed between the other pressing plate 24g and the four defining portions 24f provided on the other surface of the holding member 24e, and the other pressing plate 24g and the four defining portions 24f are provided. The anode plate 22 is held. In FIG. 3 and FIG. 4, the holding plate 24g is omitted.

The first inlet 24a of the cathode water passage 25 is formed by one connecting portion 24i, one end portion of the cathode plate 21, and two defining portions 24f that support one end portion of the cathode plate 21, and the other connecting portion 24i. The first outlet 24 c of the cathode water passage 25 is formed by the other end of the cathode plate 21 and the two defining portions 24 f that support the other end of the cathode plate 21. Moreover, the second inflow port 24b of the anode water passage 26 is formed by one connecting portion 24i, one end portion of the anode plate 22, and two defining portions 24f supporting one end portion of the anode plate 22, and the other connecting portion 24i. The second outlet 24 d of the anode water passage 26 is formed by the other end of the anode plate 22 and the two defining portions 24 f that support the other end of the anode plate 22.

And in this embodiment, it is the part connected to the diaphragm 23 of the upstream edge part and downstream edge part of the holding member 24e in the water flow direction of the cathode water flow path 25 and the anode water flow path 26, and the regulation part 24f The thickness t1 in the thickness direction of the diaphragm 23 at a portion (hereinafter also referred to as a water passage securing section) 24m that is located in the periphery and constitutes the road surfaces of the cathode water passage 25 and the anode water passage 26 is the thickness of the diaphragm 23. t2 or less. Specifically, the thickness of the connecting portion 24i of the holding member 24e is equal to or less than the thickness t2 of the diaphragm 23, and a portion between the defining portions 24f in the connecting portion 24i is a water passage securing portion 24m. In other words, the diaphragm in the portion of the holding member 24e that overlaps the cathode plate 21 and the anode plate 22 (the portion on which the cathode plate 21 and the anode plate 22 are projected) in the facing direction of the cathode plate 21 and the anode plate 22. The thickness t1 in the thickness direction of 23 is equal to or less than the thickness t2 of the diaphragm 23.

Further, as shown in FIG. 1, the electrolytic cell 5 has an inlet 11, a first outlet 12, a second outlet 13, and a third outlet 14. The inlet 11 communicates with the first inlet 24a and the second inlet 24b, the first outlet 12 communicates with the first outlet 24c, and the second outlet 13 communicates with the second outlet 24d. The third outlet 14 communicates with the cathode water passage 25. Moreover, the inlet 11 is connected to the water purification part 4 via the pipe 10b. The first outlet 12 communicates with the water discharge pipe 9 through the pipe 10c. The second outlet 13 communicates with the drain port 17. The third outlet 14 communicates with the drain valve 15. The inlet 11 also communicates with the drain valve 16.

In this electrolytic cell 5, when a voltage is applied between the cathode plate 21 and the anode plate 22, the inlet 11 passes through the first inlet 24 a and the second inlet 24 b to the cathode water passage 25 and the anode water passage 26. The incoming water is electrolyzed. In the cathode water passage 25, alkali ion water is generated at the interface between the cathode plate 21 and water, and in the anode water passage 26, acidic water is generated at the interface between the anode plate 22 and water. The alkaline ionized water generated in the cathode water passage 25 reaches the water discharge pipe 9 from the first outlet 24 c through the first outlet 12, and the acidic water generated in the anode water passage 26 passes through the second outlet 13. Drain port 17 is reached.

Here, in the electrolytic cell 5, for example, the thickness of the anode plate 22 and the cathode plate 21 is 0.5 mm, the thickness t2 of the diaphragm 23 is 0.1 mm, and the opposing surfaces of the cathode plate 21 and the anode plate 22. The distance between them is 3.5 mm, and the diaphragm 23 is located between the cathode plate 21 and the anode plate 22. In such a structure, the distance between the opposing surfaces of the cathode plate 21 and the diaphragm 23 and the distance between the opposing surfaces of the anode plate 22 and the diaphragm 23 are 1.7 mm, respectively. And in this embodiment, since the thickness t1 is below the thickness t2 of the diaphragm 23 in the part between the regulation parts 24f in the holding member 24e, ie, the water passage securing part 24m, the water passage securing part 24m and The distance between the facing surfaces of each electrode (anode plate 22, anode plate 22) is 1.7 mm or more.

In the electrolyzed water generating apparatus 1 having such a configuration, when the flow sensor 6 detects that water has been supplied from the raw water pipe 2 in a state where the drain valves 15 and 16 are closed, the control unit detects the cathode plate of the electrolyzer 5. A voltage is applied between 21 and the anode plate 22. Thereby, the water purified by passing through the water purification unit 4 is electrolyzed in the electrolytic cell 5 to generate alkali ion water and acidic water from the water. The generated alkaline ionized water is discharged from the water discharge pipe 9 and the acidic water is discharged from the drain port 17.

Also, when the flow rate sensor 6 detects that the raw water pipe 2 is closed and the supply of water is stopped, the electrolyzed water generating device 1 reverses the polarities of the cathode plate 21 and the anode plate 22 and keeps constant between these electrodes. Reverse voltage cleaning is performed by applying a time voltage. When the reverse electric cleaning for a certain time is completed, the drain valves 15 and 16 are opened to drain the water in the electrolytic cell 5 from the drain valves 15 and 16.

Here, FIG. 6 is a graph showing the relationship between pH and dissolved matter in water, and FIG. 7 is a graph showing the relationship between pH and solubility of calcium carbonate in water. As shown in FIG. 6, carbon dioxide components such as carbon dioxide (H ₂ CO ₃ ), hydrogen carbonate ions (HCO ₃ ⁻ ), and carbonate ions (CO ₃ ²⁻ ) are dissolved in tap water, well water, river water, and the like. is doing. As shown in the formula (1), the form of this carbonic acid component changes depending on pH by releasing or incorporating H ⁺ .
H ₂ CO ₃ → H ⁺ + HCO ₃ ⁻ → 2H ⁺ + CO ₃ ²⁻ (1)

The carbonic acid component of alkaline ionized water (cathode water) generated electrolytically from water takes CO ₃ ²⁻ as its form. By the way, ionic components such as Ca ²⁺ and Mg ²⁺ are dissolved in water. However, as can be seen from FIG. 7, Ca ²⁺ has a higher solubility in water with higher alkalinity. ₃ , the amount deposited from water increases. In addition, regarding Mg ²⁺ , the solubility of MgCO ₃ in water is not lower than that of CaCO ₃ , so that the amount of precipitation as MgCO ₃ is relatively small. However, since Mg (OH) ₂ has low solubility in water, Mg (OH) ₂ is precipitated from water under alkaline conditions.

In the electrolytic cell 5, these deposited components adhere to the road surface of the cathode water passage 25 and the road surface of the anode water passage 26, and gradually close the flow paths. Accordingly, the cathode water passage 25 and the anode water passage 26 should have a larger cross-sectional area.

On the other hand, in the present embodiment, as described above, it is a portion connected to the diaphragm 23 at both end portions on the upstream and downstream sides of the holding member 24e in the water flow direction of the cathode water passage 25 and the anode water passage 26. The thickness t1 in the thickness direction of the diaphragm 23 in the portion (water passage securing portion) 24m constituting the road surface of the cathode water passage 25 and the anode water passage 26 is equal to or less than the thickness t2 of the diaphragm 23. Therefore, compared with the case where the thickness t1 of the water passage securing portion 24m is thicker than the thickness t2 of the diaphragm 23, the cross-sectional areas of the cathode water passage 25 and the anode water passage 26 can be increased. Clogging of the cathode water passage 25 and the anode water passage 26 due to the adhesion of the deposited components from the water can be suppressed, so that the life of the electrolyzed water generator 1 can be extended.

In the present embodiment, in the connecting portion 24i of the holding member 24e, the portion whose thickness is equal to or less than the thickness t2 of the diaphragm 23 is between the defining portion 24f material. The thickness of the portion other than between the defining portion 24f may be equal to or less than the thickness t2 of the diaphragm 23.

(Second Embodiment) FIGS. 8 to 11 show a second embodiment of the present invention, FIG. 8 is an exploded perspective view showing the electrolytic cell 5, and FIG. 9 is a diagram showing the electrolytic cell. a) is a front view, (b) is a cross-sectional view taken along line EE of (a), FIG. 10 (a) is a cross-sectional view taken along line FF of FIG. 9 (a), and FIG. FIG. 11A is a cross-sectional view taken along line GG of FIG. 11A, and FIG. 11 is a view showing the holding member, where FIG. 11A is a front view and FIG. 11B is a cross-sectional view taken along line HH of FIG.

This embodiment has the same basic configuration as that of the first embodiment, but the shape of the holding member 24eA in the casing 24 of the electrolytic cell 5 is different from that of the first embodiment.

In the present embodiment, as in the first embodiment, the upstream end portion and the downstream end portion of the holding member 24eA in the water passage direction of the cathode water passage 25 and the anode water passage 26 are disposed with a space therebetween. Two defining portions 24f are provided. A part of the connecting portion 24iA constituting the inner peripheral portion of the holding member 24eA is provided between the two defining portions 24f of the pair of connecting portions 24iA that are the upstream and downstream ends of the holding member 24eA. A recess 24n is formed by cutting out and a part of the upstream and downstream ends of the diaphragm 23 in the water flow direction is disposed in the recess 24n. Specifically, in this embodiment, the ends of the diaphragm 23 (four corners when the diaphragm 23 is viewed in plan view) are embedded at both ends of each connecting portion 24iA, and the diaphragm 23 positioned in the recess 24n is It is exposed from the connecting portion 24iA and faces the cathode plate 21 and the anode plate 22. Such embedding can be realized, for example, by insert-molding the diaphragm 23 in the connecting part 24iA, or by dividing the connecting part 24iA into two parts and sandwiching the end part of the diaphragm 23 with these parts. Here, similarly to the first embodiment, the defining portion 24f may be formed as a separate part from the connecting portion 24iA and fixed to the connecting portion 24iA, or may be integrally formed with the connecting portion 24iA. In the drawing, an example is shown in which the defining portion 24f is formed as a separate component from the connecting portion 24iA and is fixed to the connecting portion 24iA.

As described above, in this embodiment, the recess 24n in which a part of the diaphragm 23 is disposed is formed between the two defining portions 24f at the downstream end of the holding member 24eA. Since the diaphragm 23 located at the side constitutes the road surface of the cathode water passage 25 and the road surface of the anode water passage 26, the downstream side of the holding member 24eA is compared to the case where the concave portion 24n is not formed in the holding member 24eA. Since the cross-sectional areas of the cathode water passage 25 and the anode water passage 26 can be widened between the two defining portions 24f at the end, the blockage of the water passage due to the adhesion of the precipitated components from water is suppressed accordingly. As a result, the life of the electrolyzed water generator 1 can be extended.

(Third Embodiment) FIGS. 12 to 15 show a third embodiment of the present invention, FIG. 12 is an exploded perspective view showing an electrolytic cell, and FIG. 13 is a diagram showing an electrolytic cell. ) Is a front view, (b) is a cross-sectional view taken along line II of (a), FIG. 14 (a) is a cross-sectional view taken along line JJ of FIG. 13 (a), and FIG. 14 (b) is FIG. ) Is a cross-sectional view taken along the line KK in FIG. 14, and FIG.

This embodiment has the same basic configuration as that of the second embodiment, but the shape of the holding member 24eB in the casing 24 of the electrolytic cell 5 is different from that of the second embodiment.

The pair of connecting portions 24iB of the holding member 24eB of the present embodiment has a thickness from the outer end surface (upstream end surface or downstream end surface in the water flow direction) to the inner end surface (end surface on the diaphragm 23 side) and toward the diaphragm 23. An inclined portion 24p formed so as to be thin is formed, and a diaphragm 23 is connected to an inner front end portion (the thinnest portion) of the inclined portion 24p.

As described above, in the present embodiment, since the holding member 24e has the inclined portion 24p, the strength and rigidity of the holding member 24e is ensured, and the water outlets near the

outlets

24a and 24b and the

inlets

24c and 24d are disconnected. It is possible to achieve coexistence with expansion of the area.

The present invention is not limited to the above-described embodiments, and various other embodiments can be adopted without departing from the gist of the present invention. For example, the inclined portion 24p of the third embodiment may be applied to the holding member 24e of the first embodiment. The defining portion 24f is not limited to a cylindrical shape, and may be another shape such as a polygonal cross section.

A first aspect of the present invention includes a diaphragm, a pair of electrode plates disposed opposite to each other with the diaphragm interposed therebetween, and a pair of water passages passing between the electrode plate and the diaphragm, In the electrolyzed water generating device that generates electrolyzed water from the water flowing through the water channel by applying a voltage between the pair of electrode plates, while holding both ends of the diaphragm in the direction of water flow of the water channel A holding member that constitutes a road surface of the water passage, and a plurality of defining portions that are provided at both ends of the holding member in the water passage direction of the water passage and that define the distance between the diaphragm and the electrode plate. A thickness in the thickness direction of the diaphragm in a portion connected to the diaphragm at a downstream end portion of the holding member in the water flow direction of the water flow path and constituting a road surface of the water flow path Is an electrolyzed water generating device having a thickness equal to or less than the thickness of the diaphragm.

The second aspect of the present invention comprises a diaphragm, a pair of electrode plates disposed opposite to each other with the diaphragm interposed therebetween, and a pair of water passages passing between the electrode plate and the diaphragm, In an electrolyzed water generating device that generates electrolyzed water from water flowing through the water flow path by applying a voltage between the pair of electrode plates, while holding both ends of the diaphragm in the water flow direction of the water flow path A holding member that constitutes a road surface of the water passage, and a plurality of defining portions that are provided at both ends of the holding member in the water passage direction of the water passage and that define the distance between the diaphragm and the electrode plate. Two downstream end portions of the holding member in the direction of water flow of the water passage are provided with the two defining portions spaced apart from each other, and on the downstream side of the holding member A portion of the diaphragm is disposed between the two defining portions at the end. Recesses are formed, said diaphragm positioned in the recess is electrolyzed water producing apparatus constituting the road surface of the water passage.

According to a third aspect of the present invention, in the electrolyzed water generating apparatus according to the first or second aspect, the holding member has an inclined portion formed so that the thickness decreases as it goes toward the diaphragm. It is a water generator.

According to a fourth aspect of the present invention, in the electrolyzed water generating device according to the first or third aspect, the holding member includes a pair of elongated side walls and a pair of the side walls. A pair of connecting parts connected at both ends of the part, wherein the connecting part constitutes a thick part constituting an outer peripheral part of the holding member and an inner peripheral part of the holding member. A thin portion formed thinner than the thick portion, and the end portions of the diaphragm face each other of the thin portions of the pair of connecting portions. The plurality of defining portions are respectively formed on surfaces of the thin portion facing the pair of electrode plates, and the diaphragm in a portion of the thin portion facing the pair of electrode plates Electrolyzed water whose thickness in the thickness direction is equal to or less than the thickness of the diaphragm It is formed apparatus.

According to a fifth aspect of the present invention, in the electrolyzed water generating apparatus according to the second or third aspect, the holding member includes a pair of elongated side walls and a pair of the side walls. A pair of connecting parts connected at both ends of the part, the two defining parts are formed on a surface of each connecting part facing the electrode plate, and the concave part is formed on each connecting part. The electrolyzed water generating device is formed between the two defining portions, and the diaphragm is embedded in the connecting portion at an end thereof and is exposed from the connecting portion in the concave portion.

According to the first aspect of the present invention, the thickness of the diaphragm in the portion connected to the diaphragm at the downstream end of the holding member in the direction of passage of the water passage and constituting the road surface of the water passage. Since the thickness in the direction is equal to or less than the thickness of the diaphragm, the cross-sectional area of the water passage can be made wider than in the case where the thickness of the portion is larger than the thickness of the diaphragm. The blockage of the water passage due to the adhesion of the precipitated components from water can be suppressed, and as a result, the life of the electrolyzed water generating device can be extended.

According to the second aspect of the present invention, a recess in which a part of the diaphragm is disposed is formed between the two defining portions at the downstream end of the holding member, and the diaphragm is located in the recess. By configuring the road surface of the water passage, the cross-sectional area of the water passage between the two defining portions at the end portion on the downstream side of the holding member is wider than when the concave portion is not formed in the holding member. Therefore, it is possible to suppress the blockage of the water passage due to the adhesion of the precipitated component from the water, thereby extending the life of the electrolyzed water generating device.

According to the third aspect of the present invention, since the holding member has the inclined portion, it is possible to achieve both of ensuring the strength and rigidity of the holding member and enlarging the cross-sectional area of the water passage.

According to the fourth aspect of the present invention, since the thickness of the portion facing the electrode plate of the connecting portion is equal to or less than the thickness of the diaphragm, the cross-sectional area of the water passage can be made wider. The blockage of the water passage due to the adhesion of the precipitated components from water can be suppressed, and as a result, the life of the electrolyzed water generating device can be extended.

According to the fifth aspect of the present invention, the diaphragm is embedded in the connecting portion at an end thereof, and is exposed from the connecting portion in the recess formed between the two defining portions. Therefore, it is possible to increase the cross-sectional area of the water passage between the two defining portions, thereby extending the life of the electrolyzed water generating device, and to increase the area of the diaphragm facing the electrode plate, Efficiency can be improved.

This application claims priority based on Japanese Patent Application No. 2008-298087 filed on November 21, 2008, the entire contents of which are incorporated herein by reference.

According to the present invention, since the cross-sectional area of the water passage can be widened, it is possible to suppress the blockage of the water passage due to the sticking of the precipitated components from the water, thereby extending the life of the electrolyzed water generator. Can be achieved.

1 Electrolyzed water generator 21 Cathode plate (electrode plate)
22 Anode plate (electrode plate)
23 Diaphragm 24e, 24eA, 24eB Holding member 24f Regulation part 24m Water passage securing part (part)
24n Concave part 24p Inclined part 25 Cathode water passage (water passage)
26 Anode waterway (waterway)
t1 Thickness of water passage securing part t2 Thickness of diaphragm

Claims

A diaphragm, a pair of electrode plates disposed opposite to each other with the diaphragm interposed therebetween, and a pair of water passages passing between the electrode plate and the diaphragm, and a voltage is applied between the pair of electrode plates. In the electrolyzed water generating device for applying and generating electrolyzed water from the water flowing through the water passage,
A holding member that holds both ends of the diaphragm in the water passage direction of the water passage and constitutes a road surface of the water passage;
A plurality of defining portions that are provided at both ends of the holding member in the direction of water flow of the water passage, and that define a distance between the diaphragm and the electrode plate;
With
The thickness in the thickness direction of the diaphragm in the part connected to the diaphragm at the downstream end of the holding member in the direction of water flow of the water channel and constituting the road surface of the water channel, An electrolyzed water generating device having a thickness equal to or less than the thickness of the diaphragm.
A diaphragm, a pair of electrode plates arranged opposite to each other with the diaphragm interposed therebetween, and a pair of water passages passing between the electrode plate and the diaphragm, and a voltage is applied between the pair of electrode plates. In the electrolyzed water generating device for applying and generating electrolyzed water from the water flowing through the water passage,
A holding member that holds both ends of the diaphragm in the water passage direction of the water passage and constitutes a road surface of the water passage;
A plurality of defining portions that are provided at both ends of the holding member in the direction of water flow of the water passage, and that define a distance between the diaphragm and the electrode plate;
With
At the downstream end of the holding member in the direction of water flow of the water passage, two defining portions are provided that are spaced apart from each other.
A recess in which a part of the diaphragm is arranged is formed between the two defining portions at the downstream end of the holding member,
The electrolyzed water generating apparatus, wherein the diaphragm located in the recess constitutes a road surface of the water passage.
2. The electrolyzed water generating apparatus according to claim 1, wherein the holding member has an inclined portion formed so as to become thinner as it goes toward the diaphragm.
3. The electrolyzed water generating device according to claim 2, wherein the holding member has an inclined portion formed so as to become thinner as it goes toward the diaphragm.
The holding member has a pair of elongated side walls, and a pair of connecting portions that connect the pair of side walls at both ends of the pair of side walls,
The connecting portion is formed with a thicker portion constituting the outer peripheral portion of the holding member and a thickness in the thickness direction of the diaphragm constituting the inner peripheral portion of the holding member than the thicker portion. A thin-walled portion,
The end portions of the diaphragm are respectively fixed to the mutually opposing surfaces of the thin portions of the pair of connecting portions,
The plurality of defining portions are respectively formed on surfaces facing the pair of electrode plates in the thin portion,
2. The electrolyzed water generating device according to claim 1, wherein a thickness of the thin portion in a thickness direction of the diaphragm in a portion facing the pair of electrode plates is equal to or less than a thickness of the diaphragm.
The holding member has a pair of elongated side walls, and a pair of connecting portions that connect the pair of side walls at both ends of the pair of side walls,
The two defining portions are formed on a surface of the connecting portion facing the electrode plate,
The concave portion is formed between the two defining portions in each connecting portion,
The electrolyzed water generating apparatus according to claim 2, wherein the diaphragm is embedded in the connecting portion at an end portion thereof and is exposed from the connecting portion in the concave portion.