TWI393676B - Electrolysis water generating device - Google Patents

Description

Electrolyzed water generating device

The present invention relates to an electrolyzed water generating apparatus.

In the past, an electrolyzed water generating device that electrolyzes water in an electrolytic cell to generate electrolyzed water has been known (for example, see Patent Document 1).

As the electrolytic cell of the electrolyzed water generating apparatus, the electrolytic cell 105 shown in Figs. 16 and 17 has a separator 123 and a pair of the separators 123 disposed therebetween so as to face each other. The cathode plate 121 and the anode plate 122 of the electrode plate, and the casing 124 that houses and holds the cathode plate 121, the anode plate 122, and the separator 123. In the electrolytic cell 105, a cathode water passage 125 and an anode water passage 126 as a pair of water passages are formed. The cathode water passage 125 is formed between the cathode plate 121 and the diaphragm 123. On the other hand, the anode water passage 126 is formed between the anode plate 122 and the diaphragm 123.

The housing 124 is formed at one end thereof with a first inflow port 124a which is an inflow port of the cathode water passing path 125 and a second inflow port 124b which is an inflow port of the anode water passing path 126, and on the other hand, One end portion is formed with a first outflow port 124c which is an outflow port of the cathode water passing path 125 and a second outflow port 124d which is an outflow port of the anode water passing path 126.

The casing 124 has a substantially rectangular holding member 124e to which the diaphragm 123 is fixed, a plurality of defining portions 124f provided in a cylindrical protrusion shape of the holding member 124e, and a pressing cathode plate 121 and an anode plate 122. The pressing plate 124g is pressed.

The holding member 124e has a pair of side wall portions 124h and a pair of coupling portions 124i that couple the pair of side wall portions 124h to each other. The connecting portion 124i is formed thicker than the diaphragm 123 and fixed to the end of the diaphragm 123.

In the electrolytic cell 105, when a voltage is applied between the cathode plate 121 and the anode plate 122, water flowing from the first inflow port 124a and the second inflow port 124b to the cathode water passing path 125 and the anode water passing path 126 It is electrolyzed. In the cathode water passage 125, at the interface between the cathode plate 121 and the water, alkaline ionized water (cathode water) is generated, and in the anode water passage 126, acidic water (anode water) is generated at the interface between the anode plate 122 and the water. ).

[Advanced technical literature]

Patent Document 1: Japanese Patent Laid-Open No. Hei 10-298791

However, in such an electrolyzed water generating apparatus, there may be a cathode water passage 125 or an anode water passage 126 which is dissolved in water, for example, CaCO ₃ or Mg(OH) ₂ for analysis and fixedly attached to the electrolytic cell 105. The problem that the water passing paths 125 and 126 are gradually blocked and the life of the electrolyzed water generating device is shortened is caused.

Here, the object of the present invention is to achieve a long life of the electrolyzed water generator.

An aspect of the present invention is directed to a separator, a pair of electrode plates disposed to face each other with the separator interposed therebetween, and a pair of water passage paths between the electrode plates and the separator And an electrolysis water generating device that generates a voltage between the pair of electrode plates and generates electrolyzed water by the water flowing through the water passing path, wherein the electrolyzed water generating device is provided to be in a water passing direction of the water passing path The both ends of the diaphragm are held, and the holding member constituting the path surface of the water passing path and the both ends of the holding member provided in the water passing direction of the water passing path are defined to define the diaphragm and the diaphragm a plurality of defined portions of the distance between the electrode plates, and a portion of the water passage in the water passage direction that is connected to the diaphragm at the downstream end of the holding member, that is, a path surface constituting the water passage The thickness of the portion of the separator located in the portion is less than or equal to the thickness of the separator.

Another aspect of the present invention is directed to a separator, and a pair of electrode plates disposed to face each other with the separator interposed therebetween, and a pair of water passing between the electrode plates and the separator a path for applying a voltage between the pair of electrode plates, and an electrolysis water generating device for generating electrolyzed water by water flowing through the water passage, the electrolyzed water generating device having: a water passing direction in the water passing path The both ends of the diaphragm are held, and the holding member constituting the path surface of the water passage is provided at both ends of the holding member in the water passing direction of the water passage to define the above The plurality of restricting portions of the distance between the diaphragm and the electrode plate are provided at the end portion on the downstream side of the holding member in the water passing direction of the water passing path, and are provided with two of the above-described restrictions A recessed portion in which one of the diaphragms is disposed is formed between the two defined portions at the end portion on the downstream side of the holding member, and is positioned at a position inside the recessed portion A separator constituting the route path through the water surface.

Hereinafter, embodiments of the present invention will be described in detail below with reference to the drawings. Further, in the following embodiments, the same constituent elements are included. Therefore, the same constituent elements are designated by the same reference numerals, and the repeated description thereof will be omitted.

(first embodiment) FIG. 1 to FIG. 5 are views showing a first embodiment of the present invention. FIG. 1 is a view schematically showing a configuration of an electrolyzed water generating apparatus, and FIG. 2 is a view showing an electrolytic cell. The exploded perspective view; Fig. 3 is a view showing the surface of the electrolytic cell, wherein (a) is a front view, (b) is a sectional view of the AA line of (a), and Fig. 4 (a) is a third figure (a) Fig. 4(b) is a cross-sectional view taken along line CC of Fig. 3(a); Fig. 5 is a view showing a holding member, wherein (a) is a front view, (b) is a sectional view of the DD line of (a).

As shown in Fig. 1, the electrolyzed water generating apparatus 1 includes a purified water unit 4 that purifies water supplied from a raw water pipe 2 such as a water pipe, and electrolyzed water to produce alkaline ionized water. (cathode water) and acidic water (anode water) as electrolytic cell 5 for electrolyzing water, and a water discharge pipe 9 for discharging alkaline ionized water to the outside of the device, and a drain port 17 for discharging acidic water to the outside of the device, and for The flow rate detector 6 that supplies the amount of water from the raw water pipe 2 and the control unit (not shown) that controls each part of the electrolyzed water generating device 1 are detected. Here, the water may be, 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 the flow path switch 3. The flow path switcher 3 can switch between the water of the raw water pipe 2 and the electrolyzed water generating device 1 or both of them that can be directly discharged without passing through the electrolyzed water generating device 1.

The water purification unit 4 includes, for example, a sorbent 4a such as granular or powdery activated carbon, and a filter material 4b such as a hollow fiber membrane. In the water purification unit 4, water is supplied from the raw water pipe 2 via the flow path switch 3 and the pipe 10a. In the water purification unit 4, the impurities contained in the supplied water are sucked by the sorbent 4a, and the impurities contained in the water are filtered by the filter material 4b to purify the water. The purified water is taken out from the tube 10b.

As shown in FIGS. 2 to 4, the electrolytic cell 5 includes a separator 23, a cathode plate 21 and an anode plate 22 as a pair of electrode plates, which are disposed to face each other with the separator 23 interposed therebetween, and a storage chamber. The cathode plates 21, the anode plates 22, and the casing 24 of the separator 23 are held. Further, in the electrolytic cell 5, a cathode water passage 25 and an anode water passage 26 as a pair of water passages are formed. The cathode water passage 25 is formed between the cathode plate 21 and the separator 23, and the anode water passage 26 is formed between the anode plate 22 and the separator 23. The cathode plate 21 constitutes a path surface of the cathode water passage 25, and the anode plate 22 constitutes a path surface of the anode water passage 26. The diaphragm 23 constitutes a path surface of the cathode water passage 25 and a path surface of the anode water passage 26 .

For the cathode plate 21 and the anode plate 22, for example, a flat electrode formed in a rectangular shape is used. The electrode is formed, for example, by plating platinum (Pt) or iridium (Ir) or sintering it on titanium (Ti).

The diaphragm 23 is formed, for example, in a rectangular shape. For example, the separator 23 is formed by laminating a nonwoven fabric made of polyethylene terephthalate or the like with a porous film such as polyethylene or polytetrafluoroethylene (PTFE).

In the casing 24, the cathode plate 21, the separator 23, and the anode plate 22 are held in a state of being spaced apart from each other in this order. The outer shape of the casing 24 is formed in a substantially rectangular shape, and a first inlet 24a as an inlet of the cathode water passage 25 and an anode water passage 26 are formed in the casing 24 at one end portion in the longitudinal direction. The second inflow port 24b of the inflow port, on the other hand, the other end portion in the longitudinal direction is formed with a first outflow port 24c formed as an outflow port of the cathode water passing path 25 and an outflow port as the anode water passing path 26. The second outflow port 24d.

Specifically, the casing 24 has a substantially rectangular holding member 24e to which the diaphragm 23 is fixed, a plurality of defining portions 24f provided in the cylindrical protrusion shape of the holding member 24e, and the pressing cathode plate 21 and the anode plate 22 A pair of pressing plates 24g. 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 to each other at both end portions thereof. The holding member 24e constitutes a path surface of the cathode water passage 25 and a path surface of the anode water passage 26.

The connecting portion 24i is formed to be thinner than the side wall portion 24h. The connecting portion 24i has a thick portion 24j that constitutes the outer peripheral portion of the holding member 24e, and a thin portion 24k that constitutes the inner peripheral portion of the holding member 24e. The thickness of the thin portion 24k (thickness in the thickness direction of the separator 23) is thinner than the thickness of the thick portion 24j. Both sides of the thin portion 24k are opposed to the cathode plate 21 and the anode plate 22, respectively. The mutually opposing faces of the thin portions 24k of the pair of connecting portions 24i (the inner end faces of the respective thin portions 24k) are respectively fixed at both end portions of the diaphragm 23 in the water passing direction by, for example, the following. Thereby, the holding member 24e holds the both ends of the diaphragm 23 in the water-passing direction of the cathode water-passing path 25 and the anode water-passing path 26.

The restricting portion 24f is provided at both end portions (upstream side end portion and downstream side end portion) of the holding member 24e in the water passing direction of the cathode water passing path 25 and the anode water passing path 26 for defining the diaphragm The distance between the electrode plate 23 (the cathode water passage path 25 and the anode water passage path 26) and the path surface of the cathode water passage path 25 and the anode water passage path 26 are formed. Specifically, the defining portion 24f is provided at each end portion that is in contact with the side wall portion 24h of the thin portion 24k. More specifically, the defining portion 24f is formed to face the surface facing the cathode plate 21 of the thin portion 24k and the surface facing the anode plate 22, respectively. That is, each of the four corners on both sides of the holding member 24e is provided with a defining portion 24f one by one. The restricting portion 24f may be formed by being fixed to the connecting portion 24i by another member different from the connecting portion 24i, or may be integrally formed with the connecting portion 24i. In the drawing, an example in which the restricting portion 24f is formed as another member different from the connecting portion 24i and fixedly attached to the connecting portion 24i is shown.

The pair of pressing plates 24g are for closing the opening of the holding member 24e fixed to the side wall portion 24h. The cathode plate 21 is disposed between the one pressing plate 24g and the four limiting portions 24f provided on one of the surfaces of the holding member 24e, and the one pressing plate 24g and the four defining portions 24f sandwich the cathode Board 21. Further, the anode plate 22 is disposed between the other pressing plate 24g and the four limiting portions 24f provided on the other surface of the holding member 24e, and the other pressing plate 24g and the four limiting portions are provided. The anode plate 22 is held by 24f. Further, in the third and fourth figures, the pressing plate 24g is omitted.

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

Further, in the present embodiment, the portion of the cathode water-passing path 25 and the anode water-passing path 26 that are in the water-passing direction is connected to the diaphragm 23 of the upstream end portion and the downstream end portion of the holding member 24e, that is, A portion (hereinafter also referred to as a water passage ensuring portion) 24m that is located at the periphery of the defining portion 24f and constituting the path surface of the cathode water passing path 25 and the anode water passing path 26 is a thickness t1 in the thickness direction of the diaphragm 23, and is a diaphragm. 23 has a thickness 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 the portion located between the defining portions 24f of the connecting portion 24i is the water passing path securing portion 24m. In other words, in the opposing direction of the cathode plate 21 and the anode plate 22, in the portion of the holding member 24e which overlaps with the cathode plate 21 and the anode plate 22 (the portion where the cathode plate 21 and the anode plate 22 are projected) The thickness t1 in the thickness direction of the separator 23 is equal to or less than the thickness t2 of the separator 23.

Further, in the electrolytic cell 5, as shown in Fig. 1, the inlet 11, the first outlet 12, the second outlet 13, and the third outlet 14 are provided. The inlet 11 is connected to the first inlet 24a and the second inlet 24b; the first outlet 12 is connected to the first outlet 24c; the second outlet 13 is connected to the second outlet 24d; and the third outlet 14 is It is connected to the cathode water passage 25 . Further, the inlet 11 is connected to the water purification unit 4 via the tube 10b. The first outlet 12 is connected to the spout pipe 9 via the pipe 10c. The second outlet 13 is connected to the drain port 17. The third outlet 14 is connected to the drain valve 15. Further, the inlet 11 is also connected to the drain valve 16.

In the electrolytic cell 5, when a voltage is applied between the cathode plate 21 and the anode plate 22, the inlet 11 flows into the cathode water passage 25 and the anode water passage 26 through the first inlet 24a and the second inlet 24b. The water is electrolyzed. The alkaline ionized water is generated at the interface between the cathode plate 21 and the water in the cathode water passage 25, and acidic water is formed at the interface between the anode plate 22 and the water in the anode water passage 26. The alkaline ionized water generated in the cathode water passage 25 reaches the water discharge pipe 9 from the first outlet port 24c via the first outlet 12, and the acidic water generated in the anode water passage 26 is via the second outlet 13 Arrived at the drain port 17.

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 separator 23 is 0.1 mm, and the distance between the opposing faces of the cathode plate 21 and the anode plate 22 is 3.5 mm. The diaphragm 23 is located between the cathode plate 21 and the anode plate 22. In such a configuration, the distance between the opposing faces of the cathode plate 21 and the separator 23 and the distance between the opposing faces of the anode plate 22 and the separator 23 are respectively 1.7 mm. Further, in the present embodiment, the portion between the restricting portions 24f of the holding member 24e, that is, the water passage ensuring portion 24m, is such that the thickness t1 is equal to or smaller than the thickness t2 of the diaphragm 23, so that the water passage is secured. The distance between the portion 24m and each of the electrodes (the anode plate 22 and the anode plate 22) facing each other is 1.7 mm or more.

In the electrolyzed water generating apparatus 1 having such a configuration, when the flow rate detector 6 detects that water is supplied from the raw water pipe 2 in a state where the drain valves 15 and 16 are closed, the control unit applies a voltage to the electrolytic cell 5. Between the cathode plate 21 and the anode plate 22. Thereby, the water purified by the purified water unit 4 is electrolyzed in the electrolytic cell 5, and alkaline ionized water and acidic water are generated from the water. The generated alkaline ionized water is discharged from the spout pipe 9, and the acidic water is discharged from the drain port 17.

Further, when the flow rate detector 6 detects that the raw water pipe 2 is closed and the supply of water is stopped, the polarity of the cathode plate 21 and the anode plate 22 are reversed, and the electrodes are applied between the electrodes. The voltage is applied for a certain period of time to perform reverse voltage cleaning. When the reverse voltage washing for a certain period of 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, 16.

Here, Fig. 6 is a graph showing the relationship between pH and dissolved matter in water. Figure 7 is a graph showing the relationship between pH and the solubility of calcium carbonate in water. As shown in Fig. 6, in tap water or well water, river water, etc., carbonic acid components such as carbon dioxide gas (H ₂ CO ₃ ), hydrogencarbonate ions (HCO ₃ ^- ), and carbonate ions (CO ₃ ^2- ) are dissolved. . The carbonic acid component is released or taken in by H ⁺ as shown in the formula (1), and the form changes depending on the pH.

H ₂ CO ₃ →H ⁺ +HCO ₃ ^- →2H ⁺ +CO ₃ ^2- ...(1)

The carbonic acid component of alkaline ionized water (cathode water) produced by water electrolysis is morphologically removed from CO ₃ ^2- . Further, although ionic components such as Ca ²⁺ or Mg ²⁺ are dissolved in water, Ca ²⁺ can be seen from Fig. 7, since the solubility in water is higher as the alkali is higher, so the alkali with water The higher the sex, the greater the amount of precipitation from water in the form of CaCO ₃ . Further, in Mg ²⁺ , since the solubility of MgCO ₃ in water is not lower than that of CaCO ₃ , the amount of precipitation in the form of MgCO ₃ is relatively small. However, since Mg(OH) ₂ has a low solubility in water, Mg(OH) ₂ precipitates from water under alkaline conditions.

These deposition components are fixed to the path surface of the cathode water passage 25 and the path surface of the anode water passage 26 in the electrolytic cell 5, and the flow paths are gradually closed. Therefore, the cathode water passage 25 and the anode water passage 26 have a larger sectional area.

On the other hand, in the present embodiment, as described above, the portion of the cathode water-passing path 25 and the anode water-passing path 26 which are in the water-passing direction and the diaphragm 23 at the both end portions on the downstream side of the holding member 24e are also connected. The portion (water passage ensuring portion) 24m constituting the path surface of the cathode water passage 25 and the anode water passage 26 is such that the thickness t1 in the thickness direction of the diaphragm 23 located in the portion 24m is equal to or less than the thickness t2 of the diaphragm 23. . Therefore, when the thickness t1 of the water passage ensuring portion 24m is thicker than the thickness t2 of the diaphragm 23, since the sectional area of the cathode water passage 25 and the anode water passage 26 can be enlarged, the enlarged portion is thereby enlarged. In addition, it is possible to suppress the clogging of the cathode water passage 25 and the anode water passage 26 due to the fixed adhesion of the components precipitated from the water, so that the life of the electrolyzed water generator 1 can be extended.

In the present embodiment, the connecting portion 24i of the holding member 24e is provided between the limiting portion 24f with a thickness equal to or less than the thickness t2 of the diaphragm 23. However, the present invention is not limited thereto, and may be located in the holding member. The thickness of the portion other than the portion between the portions 24f of the 24e is set to be equal to or less than the thickness t2 of the separator 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 view showing the electrolytic cell, wherein (a ) is a front view, (b) is a sectional view of the EE line of (a); Fig. 10 (a) is a sectional view of the FF line of Fig. 9 (a), and Fig. 10 (b) is the ninth Fig. 11 is a cross-sectional view showing the GG line; Fig. 11 is a view showing the holding member, wherein (a) is a front view and (b) is a cross-sectional view of the HH line of (a).

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

In the present embodiment, in the same manner as in the first embodiment, the end portions on the upstream side and the downstream side of the holding member 24eA in the water passing direction of the cathode water passage 25 and the anode water passage 26 are provided with each other. The two limiting portions 24f are arranged at intervals. Further, between the two restricting portions 24f of the pair of connecting portions 24iA which are the end portions of the upstream side and the downstream side of the holding member 24eA, a holding member constituting the connecting portion 24iA is provided. A recess 24n formed by a part of the inner peripheral portion of the 24eA is cut, and a part of the upstream side and the downstream side of the diaphragm 23 in the water passing direction is disposed in the recess 24n. Specifically, in the present embodiment, the end portion of the diaphragm 23 is embedded in the both end portions of the respective coupling portions 24iA (the four corner portions when the diaphragm 23 is viewed in a plan view), and the diaphragm 23 located in the recess portion 24n is The connecting portion 24iA is exposed and faces the cathode plate 21 and the anode plate 22. Such embedding can be realized, for example, by inserting the diaphragm 23 into the connecting portion 24iA or by dividing the connecting portion 24iA into two portions and then sandwiching the end portion of the diaphragm 23 with the portion. Here, the restricting portion 24f may be formed by being fixed to the connecting portion 24iA by another member different from the connecting portion 24iA, or may be integrally formed with the connecting portion 24iA, similarly to the first embodiment. In the drawing, an example in which the restricting portion 24f is formed as another member different from the connecting portion 24iA and fixedly attached to the connecting portion 24iA is shown.

As described above, in the present embodiment, a concave portion 24n in which one portion of the diaphragm 23 is disposed is formed between the two defining portions 24f located at the end portion on the downstream side of the holding member 24eA, and is located in the concave portion 24n. The diaphragm 23 constitutes a path surface of the cathode water passage 25 and a path surface of the anode water passage 26, and can be enlarged at the end of the downstream side of the holding member 24eA as compared with the case where the recess 24n is not formed in the holding member 24eA. Since the cathode water passages 25 and the anode water passages 26 have a large area between the two restricting portions 24f of the portion, the enlarged portion thereof can suppress the blocking of the water passage due to the fixation of the components deposited from the water. The life of the electrolyzed water generating apparatus 1 can be extended.

(Third Embodiment) Figs. 12 to 15 are views showing a third embodiment of the present invention, and Fig. 12 is an exploded perspective view showing the electrolytic cell; Fig. 13 is a view showing the electrolytic cell, wherein (a ) is a front view, (b) is a sectional view of line II of (a); figure 14 (a) is a sectional view of the JJ line of Fig. 13 (a), and figure 14 (b) is the 13th. Fig. (a) is a cross-sectional view taken along the line KK, and Fig. 14(c) is an enlarged view of the L portion of (b).

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

In the pair of connecting portions 24iB of the holding member 24eB of the present embodiment, the outer end surface (the upstream end surface or the downstream end surface in the water passing direction) and the inner end surface (the end surface of the diaphragm 23 side) are formed to have a thickness toward the diaphragm. The inclined portion 24p formed by the thinning method of 23 is connected to the diaphragm 23 at the inner 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, it is possible to secure both the strength rigidity of the holding member 24e and the vicinity of the respective outlets 24a and 24b and the inflow ports 24c and 24d. The expansion of the broken area of the water passage.

The present invention is not limited to the embodiments described above, and various other embodiments may be employed without departing from the spirit and scope of the invention. For example, the inclined portion 24p of the third embodiment may be applied to the holding member 24e of the first embodiment. Further, the restricting portion 24f is not limited to a cylindrical shape, and may have other shapes such as a polygonal cross section.

According to a first aspect of the present invention, there is provided a separator, a pair of electrode plates disposed to face each other with the separator interposed therebetween, and a pair of water passing between the electrode plates and the separator a path, wherein a voltage is applied between the pair of electrode plates, and an electrolysis water generating device that generates electrolyzed water by water flowing through the water passing path, the electrolyzed water generating device having: a water flowing direction in the water passing path The both ends of the diaphragm are held, and the holding member constituting the path surface of the water passage is provided at both ends of the holding member provided in the water passing direction of the water passage to define the diaphragm a plurality of defining portions of the distance from the electrode plate, and a portion of the water passing direction of the water passing path that is connected to the diaphragm at the downstream end portion of the holding member, that is, a path constituting the water passing path The surface portion has a thickness in the thickness direction of the separator located in the portion which is equal to or less than the thickness of the separator.

According to a second aspect of the present invention, there is provided a separator, a pair of electrode plates disposed to face each other with the separator interposed therebetween, and a pair of water passing between the electrode plates and the separator a path for applying a voltage between the pair of electrode plates, and an electrolysis water generating device for generating electrolyzed water by water flowing through the water passage, the electrolyzed water generating device having: a water passing direction in the water passing path The both ends of the diaphragm are held, and the holding member constituting the path surface of the water passage is provided at both ends of the holding member in the water passing direction of the water passage to define the above The plurality of restricting portions of the distance between the diaphragm and the electrode plate are provided at the end portion on the downstream side of the holding member in the water passing direction of the water passing path, and are provided with two of the above-described restrictions The recessed portion in which one of the diaphragms is disposed is formed between the two defined portions at the end portion on the downstream side of the holding member, and the above-mentioned position in the recessed portion is formed. Film constituting the route path through the water surface.

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 to have a thickness that is thinned toward the diaphragm.

According to a fourth aspect of the present invention, in the electrolysis water generating apparatus according to the first or third aspect, the holding member has a pair of side wall portions that are elongated and formed, and the pair of side wall portions a pair of connecting portions that connect the pair of side wall portions to each other at both end portions, the connecting portion having a thick portion that constitutes an outer peripheral portion of the holding member, and an inner peripheral portion that constitutes the holding member a thin portion of the diaphragm which is thinner than the thick portion in the thickness direction, and an end portion of the diaphragm is fixed to a mutually opposing surface of the thin portion of the pair of connecting portions, the plurality of The limiting portion is formed on a surface facing the pair of electrode plates located on the thin flesh portion, and a portion of the thin flesh portion facing the pair of electrode plates is in a thickness direction of the separator. It is below the thickness of the above separator.

According to a fifth aspect of the present invention, in the second or third aspect, the holding member includes: a pair of elongated side wall portions; and the pair of side wall portions a pair of connecting portions that connect the pair of side wall portions to each other at both end portions, wherein the two defining portions are formed on a surface facing the electrode plate at each of the connecting portions, and the recessed portion is formed at: Between the two limiting portions of the connecting portions, the diaphragm is embedded in the connecting portion at the end portion thereof, and the diaphragm located in the recess portion is exposed from the connecting portion.

According to the first aspect of the present invention, the portion which is connected to the diaphragm at the downstream end portion of the holding member in the water passing direction of the water passage, that is, the portion constituting the path surface of the water passage, is located When the thickness of the separator in the thickness direction is less than the thickness of the separator, and the thickness of the portion is thicker than the thickness of the separator, since the cross-sectional area of the water passage can be enlarged, the enlarged portion is thereby enlarged. In addition, it is possible to suppress the clogging of the water passage by the fixed deposition of the components deposited from the water, and it is possible to achieve a long life of the electrolyzed water generator.

According to the second aspect of the present invention, the recessed portion in which one portion of the diaphragm is disposed is formed between the two defining portions located at the end portion on the downstream side of the holding member, and the diaphragm is disposed at a position in the recessed portion. The path surface of the water passage is smaller than the cross-sectional area of the water passage between the two restricting portions of the end portion on the downstream side of the holding member as compared with the case where the recess is not formed in the holding member. In the enlarged portion, it is possible to suppress the clogging of the water passage by the fixed deposition of the components deposited from the water, and it is possible to achieve a longer life of the electrolyzed water generator.

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

According to the fourth aspect of the present invention, the thickness of the portion facing the electrode plate of the connecting portion is equal to or less than the thickness of the separator, so that the cross-sectional area of the water passage can be made wider, so that it can be suppressed. Since the components precipitated from the water are fixedly attached and the water passage is blocked, the life of the electrolyzed water generator can be extended.

According to the fifth aspect of the present invention, the diaphragm is formed in the recessed portion formed at the end portion and located between the two restricting portions, and the diaphragm is exposed from the connecting portion. Therefore, it is possible to increase the life of the electrolytic water generator by obtaining the cross-sectional area of the water passage between the two limited portions, and to obtain the area of the diaphragm facing the electrode plate so that the electrolytic reaction can be obtained. The efficiency is improved.

The present application claims priority from Japanese Patent Application No. 2008-298087, filed on Nov. 21, 2008, which is incorporated herein by reference.

[Industrial availability]

According to the present invention, since the cross-sectional area of the water-passing path can be enlarged, the enlarged portion can be prevented, and the blocking of the water-passing path due to the fixed adhesion of the components deposited from the water can be suppressed, and the long life of the electrolyzed water generating device can be achieved. Chemical.

1. . . Electrolyzed water generating device

twenty one. . . Cathode plate (electrode plate)

twenty two. . . Anode plate (electrode plate)

twenty three. . . Diaphragm

24a. . . First stream entrance

24b. . . Second stream entrance

24c. . . First-rate exit

24d. . . Second outlet

24e, 24eA, 24eB. . . Holding member

24f. . . Limitation

24i. . . Linkage

24j. . . Thick meat department

24k. . . Thin meat department

24m. . . Water path assurance department (partial)

24n. . . Concave

24p. . . Inclined portion

25. . . Cathode water passage (water passage)

26. . . Anode water passage (water passage)

T1. . . Water path ensuring thickness

T2. . . Diaphragm thickness

Fig. 1 is a view schematically showing the configuration of an electrolyzed water generating apparatus according to a first embodiment of the present invention.

Fig. 2 is an exploded perspective view of the electrolytic cell in the first embodiment of the present invention.

Fig. 3 is a plan view showing an electrolytic cell according to a first embodiment of the present invention, wherein (a) is a front view and (b) is a cross-sectional view taken along line A-A of (a).

Fig. 4(a) is a cross-sectional view taken along line B-B of Fig. 3(a), and Fig. 4(b) is a cross-sectional view taken along line C-C of Fig. 3(a).

Fig. 5 is a view showing a holding member in the first embodiment of the present invention, wherein (a) is a front view and (b) is a cross-sectional view taken along line D-D of (a).

Figure 6 is a graph showing the relationship between pH and dissolved matter in water.

Figure 7 is a graph showing the relationship between pH and the solubility of calcium carbonate in water.

Fig. 8 is an exploded perspective view showing the electrolytic cell in the second embodiment of the present invention.

Fig. 9 is a plan view showing an electrolytic cell according to a second embodiment of the present invention, wherein (a) is a front view and (b) is a cross-sectional view taken along line E-E of (a).

Fig. 10(a) is a cross-sectional view taken along line F-F of Fig. 9(a), wherein (b) is a cross-sectional view taken along line G-G of Fig. 9(a).

Fig. 11 is a view showing a holding member in a second embodiment of the present invention, wherein (a) is a front view and (b) is a cross-sectional view taken along line H-H of (a).

Fig. 12 is an exploded perspective view showing the electrolytic cell in the third embodiment of the present invention.

Figure 13 is a plan view showing an electrolytic cell according to a third embodiment of the present invention, wherein (a) is a front view and (b) is a cross-sectional view taken along line I-I of (a).

Fig. 14(a) is a cross-sectional view taken along line JJ of Fig. 13(a), (b) is a sectional view taken along line KK of Fig. 13(a), and (c) is a portion L of (b) Enlarged image.

Fig. 15 is a view showing a holding member in a third embodiment of the present invention, wherein (a) is a front view and (b) is a cross-sectional view taken along line M-M of (a).

Fig. 16 is an exploded perspective view showing a conventional electrolytic cell.

Figure 17 is a cross-sectional view showing a conventional electrolytic cell, wherein (a) is a sectional view corresponding to a portion of the NN line of Fig. 16, and (b) is a sectional portion corresponding to a portion of the PP line of Fig. 16. Figure.

twenty one. . . Cathode plate (electrode plate)

twenty two. . . Anode plate (electrode plate)

twenty three. . . Diaphragm

24a. . . First stream entrance

24b. . . Second stream entrance

24c. . . First-rate exit

24d. . . Second outlet

24e. . . Holding member

24f. . . Limitation

24i. . . Linkage

24j. . . Thick meat department

24k. . . Thin meat department

24m. . . Water path assurance department (partial)

25. . . Cathode water passage (water passage)

26. . . Anode water passage (water passage)

T1. . . Water path ensuring thickness

T2. . . Diaphragm thickness

Claims (6)

An electrolyzed water generating device comprising: a separator; and a pair of electrode plates disposed to face each other with the separator interposed therebetween; and a pair of water passages passing between the electrode plates and the separator to apply a voltage An electrolyzed water generating device that generates electrolyzed water by water flowing through the water passing path between the pair of electrode plates, and is characterized in that: two of the separators are provided in a water passing direction of the water passing path a retaining member constituting the path surface of the water passing path and a pair of both ends of the holding member disposed in the water passing direction of the water passing path for defining the end portion between the diaphragm and the electrode plate a plurality of defined portions of the distance, and a portion of the water passage in the water passage direction that is connected to the diaphragm at the downstream end of the holding member, that is, a portion constituting the path surface of the water passage The thickness of the separator located in the portion in the thickness direction is equal to or less than the thickness of the separator. An electrolyzed water generating device comprising: a separator; and a pair of electrode plates disposed to face each other with the separator interposed therebetween; and a pair of water passages passing between the electrode plates and the separator to apply a voltage An electrolyzed water generating device that generates electrolyzed water by water flowing through the water passage through a pair of the electrode plates, and is characterized in that: the separator is provided in a water passing direction of the water passing path a retaining member constituting a path surface of the water passage, and both end portions of the retaining member disposed in a water passing direction of the water passage for defining the diaphragm and the electrode plate The plurality of restricting portions of the distance between the plurality of the restricting portions are located at the end portion on the downstream side of the holding member in the water passing direction of the water passing path, and are provided with two of the restricting portions which are disposed at intervals Between the two defined portions of the end portion on the downstream side of the holding member, a concave portion in which one portion of the diaphragm is disposed is formed, and the diaphragm is disposed at a position in the concave portion. Said water passage through the path plane. The electrolyzed water generating apparatus according to claim 1, wherein the holding member has an inclined portion formed to have a thickness that is thinned toward the diaphragm. The electrolyzed water generating apparatus according to claim 2, wherein the holding member has an inclined portion formed to have a thickness that is thinned toward the diaphragm. The electrolyzed water generating apparatus according to claim 1, wherein the holding member has a pair of elongated side wall portions and a pair of side wall portions connected to each other at both end portions of the pair of side wall portions. a pair of connecting portions, the connecting portion having a thick portion that constitutes an outer peripheral portion of the holding member, and an inner peripheral portion that constitutes the holding member and having a thickness in a thickness direction of the diaphragm is larger than the thick portion a thin portion of the thin portion that is formed thinly, the end portions of the diaphragm are respectively fixed to mutually opposing surfaces of the thin portions of the pair of connecting portions, and the plurality of defining portions are formed separately from the thin portion The thickness of the portion of the thin meat portion that faces the pair of electrode plates in the thickness direction of the separator is equal to or less than the thickness of the separator. The electrolyzed water generating apparatus according to claim 2, wherein the holding member has a pair of elongated side wall portions and a pair of side wall portions connected to each other at both end portions of the pair of side wall portions a pair of connecting portions, wherein the two defining portions are formed on a surface facing the electrode plates of the respective connecting portions, and the concave portions are formed between the two limiting portions of the connecting portions, and the The diaphragm is embedded in the connecting portion at the end thereof, and the diaphragm located in the recess is exposed from the connecting portion.