JP2014196570A - Electrolytic cell structure of diaphragm-provided electrolytic cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a diaphragm-provided electrolytic cell D in which a plurality of electrode plate units 10 are superimposed mutually to form a plurality of pairs of electrolytic chambers in individual electrode plate units 10 and which prevents leakage of to-be-electrolyzed water, electrolysis production water, etc. from each pair of the electrolytic chambers without use of a sealing member.SOLUTION: Individual electrode plates 10d and 10e are engaged in individual spacers 10a and 10b constituting an electrode plate unit 10 to form engagement concave parts 14 and 15 located in outer peripheral frame parts 11 and 12, and, in the outer peripheral frame parts 11 and 12, a concavoconvex structure having engagement concave parts 11a and 12a which have the same depths as the depths of the engagement concave parts 14 and 15 is formed so as to set the depths of the individual concave parts 11a, 12a, 14 and 15 to be the same as the thicknesses of the electrode plates 10d and 10e. The mutually opposed outer peripheral frame parts 11 and 12 of both spacers 10a and 10b are engaged with each other and assembled tightly.

Description

  The present invention relates to a diaphragm electrolytic cell constituting an electrolyzed water generating device, and more particularly to an electrolytic cell structure of the diaphragm electrolytic cell.

As one formation of the diaphragm membrane electrolytic cell constituting the electrolyzed water generating apparatus, the electrolyzed water is introduced in the lower part and the electrolyzed water outlet part is provided in the upper part. , Ri Na houses each arranged to the electrode plate unit comprising on both sides of the electrode plate and the cathode side of the positive electrode side electrode plate of the pair of rectangular vertical lattice frame-shaped septum film sandwiched by the spacer, before SL there is a perforated diaphragm electrolytic cell to form the respective electrolysis chambers which are partitioned into a channel of predetermined width in parallel to each other in each vertical frame part of each spacer. (See Patent Documents 1 and 2)

In the diaphragm electrolytic cell of this type, the anode-side electrolytic chamber formed between the diaphragm and the anode-side electrode plate and the cathode-side electrolytic chamber formed between the diaphragm and the cathode-side electrode plate. Electrolyzed water is subjected to diaphragm membrane electrolysis. For this reason, in order to prevent leakage of electrolyzed water in each of the electrolytic chambers and generated electrolytically generated water to the outside, between one spacer and one wall of the housing, and between the other spacer and the other of the housing. In order to cope with leakage of electrolytically generated water , a seal member is interposed between the wall portions.

JP-A-8-158084 JP 2004-18836 A

Incidentally, in the organic diaphragm electrolytic cell formed by accommodating in a state in which the present invention is obtained by polymerizing a multiple electrode plate unit shall be the application target to each other (multi-tank chromatic diaphragm electrolytic cell), a pair of electrolyte chambers (anode electrolysis Since there are a plurality of pairs of chambers and cathode-side electrolysis chambers, it is important to take measures against leakage in each pair of electrolysis chambers .

In the present invention, in order to cope with leakage of electrolyzed water from each pair of electrolysis chambers in the above-described multiple diaphragm membrane electrolytic cell, a plurality of vertical frames 23 are arranged in parallel in the rectangular outer peripheral frame portions 11 and 12. The diaphragm 10c sandwiched between the formed pair of spacers 10a and 10b , and the peripheral edge of the diaphragm 10c are fitted inside the outer peripheral frame of each spacer so as to be in close contact with the vertical frame 13 of the spacer. Are provided with a plurality of electrode plate units 10 constituted by a pair of anode plates 10d and cathode plates 10e that vertically define a plurality of channel-shaped electrolysis chambers, and water to be electrolyzed is introduced into the electrolysis chamber at a lower portion. inside the 筺 body 20 that at the site of the upper side has a inlet portion having a conductive outlet for deriving a electrolyzed water produced in the electrolytic chamber to each pair of spacers of the electrode plate unit 10 are joined together at the outer peripheral frame to polymerize The assembly is sealed, and each electrode plate of the electrode plate unit functions as an electrode of the same polarity in a channel-shaped electrolytic chamber defined on both sides of each diaphragm, and is supplied to the introduction port of the housing 20 The electrolyzed water generated by the electrolyzed water flowing into the electrolysis chambers flows out from the lead-out portion of the housing, and each pair of electrodes constituting the electrode plate unit. The spacer has a fitting recess having a depth with which a peripheral edge portion of the electrode plate (anode plate or cathode plate) in close contact with the vertical frame is fitted inside the outer peripheral frame portion, and the outer peripheral frame portion includes the fitting recess. When the electrode plate units are superposed, they form concave and convex fitting surfaces that fit together, and the electrode plate unit assembly is defined by the electrode plate unit in a state of being sealed in the housing. The electrolyzed water supplied to each of the electrode chambers A diaphragm membrane electrolytic cell characterized in that it does not leak into another electrolytic chamber is provided.

In closed diaphragm electrolytic cell according to the present invention, since both the spacer constituting the electrode plates unit can be tightly fitted to each other while sharing the same electrode plate Te on opposing faces thereof, the electrolyte leakage to the outside of the electrolytic water produced from the chamber can be reliably prevented.

Further, by employing an assembly structure in accordance with the above electrode plate unit, and can be omitted sealing member of the gasket or the like when assembling together the conductive plate unit to be joined together, down cutting the number of parts , it is possible to achieve a decrease cutting of assembling man-hours, the reduction or the like of the part product cost. Furthermore, by employing the assembly structure consuming electrode plates unit are joined together, the electrode plate fitted to the outer frame portion of the spacer is to prevent shrinkage of the spacer (especially when made of a synthetic resin), It is possible to prevent the electrode plate from protruding from the spacer.

  In the diaphragm membrane electrolytic cell according to the present invention, it is possible to adopt a configuration in which a diaphragm constituting the electrode plate unit and both spacers sandwiching the diaphragm are integrally formed. In this case, the assembly variation of the positional relationship between each spacer and the diaphragm can be eliminated, and the assembly of the electrode plate unit can be further improved. In addition, since each spacer and the diaphragm are in close contact with each other, there is no positional shift of each channel of each electrolysis chamber due to secular change, and a uniform flow path (channel) of electrolyzed water is ensured over a long period of time. Can do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an electrolyzed water generating apparatus equipped with a diaphragm electrolyzer according to the present invention, and is a perspective view showing a state in which a front cover of a case is removed, an electrical component is taken out, and an apparatus main body in the case can be seen from the front. It is the rear view which looked at the said apparatus main body from the rear side. It is the front view (a) of the diaphragm membrane electrolyzer concerning the present invention, and the vertical section side view (b) cut along the arrow 3-3 line of the figure. It is the front and side view (a) of one spacer inserted between the housing and the electrode plate unit in the diaphragm electrolyzer according to the present invention, and the front and side view (b) of the other spacer. It is a perspective view of the state which decomposed | disassembled the several electrode plate unit which comprises the diaphragm electrolytic cell which concerns on this invention. It is the perspective view seen from the front side of the state which superposed | polymerized the electrode plate unit which comprises the diaphragm electrolytic cell which concerns on this invention. It is the front view (a) of the spacer of one electrode plate unit which comprises the diaphragm electrolytic cell which concerns on this invention, and the front view (b) of the spacer of the other electrode plate unit facing the said spacer.

Figure 1 shows an electrolytic water generation apparatus equipped with a perforated diaphragm electrolytic cell employing an electrolytic cell structure according to the present invention. Figure 1 shows a state in which the electrolytic water generated from the case body a1 of the case A of the apparatus remove the front cover a2, taken out electrical unit B, and the apparatus main body C of the case body a1 decomposed into so that can the visible from the front FIG.

The electrolytic water generation apparatus, made of accommodating the apparatus main body C into the case body a1, only mounting the support plate b1 supporting the each of the electrical components on the front face of the instrumentation Okimoto body C, to case body a1 Is covered by a front cover a2.
Support plate b1 for supporting each part article of the electrical unit B is to function as a partition plate that partitions the instrumentation Okimoto body C, wind fan b2 and air ports b3 feed is provided in the support plate b1. As a result, when the blower fan b2 is driven, an air flow is generated that circulates between the electrical component housing portion and the device main body C housing portion, and the air cooled by the water path portion of the device main body C is supplied to the electrical component housing portion. reflux to the side to cool the electrical components, Ru lowers the temperature of each of the electrical components.

The apparatus main body C which comprises the said electrolyzed water generating apparatus is equipped with the diaphragm electrolyzer D as a principal part . As shown in FIG. 3, the diaphragm membrane electrolytic cell D is configured by accommodating a plurality of electrode plate units 10 in a housing 20 in a polymerized state. Each electrode plate unit 10 is a same configuration, a pair of the electrolysis chamber (anode electrolysis chamber and the cathode side electrolysis chamber) is formed therein.

In the electrolyzed water generating apparatus, as shown in FIG. 2, the electrolyzed water supply pipe 31 is provided in the electrolyzed water introduction port provided in the lower part of the casing 20 that houses the diaphragm electrolyzer D. (31a, 31b) Ri Contact is connected, the outlet line 32a to the guide outlet of the electrolyzed water, which is provided in a portion of the upper 筺 body 20 to flow out of the respective electrolytic water produced, 32b is connected Yes.

The electrolyzed water is dilute salt water obtained by diluting high-concentration salt water to a predetermined concentration with raw water, and a salt water tank E installed outside the housing 20 in the middle of the supply conduit 33 into which the raw water flows. by feeding continuously a certain amount of high-concentration salt water through the water supply conduit 34 from, and is prepared in the supply conduit 33. The prepared electrolyzed water is supplied to the anode-side electrolysis chamber and the cathode-side electrolysis chamber formed in each electrode plate unit 10 through the branch pipe sections 31a, 31b of the supply conduit 31, respectively.

In closed diaphragm electrolytic cell D, the anode side of the electrode plate which the electrolytic water supplied to the anode side electrolysis chamber and the negative electrode side electrolysis chamber constitutes the collector electrode plate unit 10, upward along the cathode side of the electrode plate In the meantime, it is electrolyzed with a diaphragm, and electrolyzed acidic water is produced in the anode-side electrolysis chamber, and synchronously, electrolyzed alkaline water is produced in the cathode-side electrolysis chamber. Anode electrolyzed alkaline water produced by the generated electrolytic acid water and anionic pole electrolysis chamber in the electrolysis chamber, each outlet line 32a through the respective outlet section, and flows out to 32b, pre Me Supplied to the designated location. In addition, the code | symbol F of FIG. 1 is a nozzle connected to the front-end | tip of the outflow conduit | pipe 32a of electrolytically generated acidic water, and pours electrolytically generated acidic water .

As shown in FIG. 3B, the diaphragm electrolytic cell D according to the present invention is configured by housing a plurality of electrode plate units 10 in a housing 20 as an aggregate obtained by polymerizing each other. The housing 20 that accommodates the assembly of the electrode plate units 10 is composed of an upper collar portion 21 and a lower collar portion 22. The upper collar body 21 has a shape that slightly expands downward, and the lower collar portion 22 faces upward. It is formed in a shape that expands slightly. The housing 20 is joined to the opening portion of the upper筺部21 and the lower筺部22 mutually polymerize to both opening portions of these are formed to maximize the expansion width.
In order to accommodate the assembly of the electrode plate units 10 in the housing 20, first, for example, the lower part of the assembly is inserted into the lower collar portion 22, and then the side spacer 23 shown in FIG. 4 (a) is inserted. is inserted between the left and right side portions of the assembly and the lower筺部22, the scan spacers 24 of the front and rear side shown in FIG. 4 (b), inserted before and after the side of the assembly and the lower筺部22 Insert between. The upper collar portion 21 is fitted to the upper half of the assembly in the inserted state.

Thus, assembly of the electrode plate unit 10 is in close contact with both side portions of the right and left at the side spacer 23, 筺 body in a state where the front and rear sides are in close contact with the front way and rear side spacer 24 in its It will be in the state accommodated in 20. Each of the spacers 23 and 24 has a maximum thickness at the center in the vertical direction. Maximum thickness of each spacer 23 and 24, located at the junction position of the upper and lower筺部21, such as an aqueous solution of the same junction to enhance the adhesion at the junction portion between each spacer 23, 24 Leakage is prevented. Incidentally, assembly of the electrode plate unit 10, if open junction of the upper and lower筺部21 during disassembly of the chromatic diaphragm electrolytic cell D, can be taken in easily.

  As shown in FIGS. 5 and 6, the electrode plate unit 10 constituting the diaphragm electrolytic cell D is provided on each side of the diaphragm 10c in a state of being sandwiched by a pair of square lattice frame spacers 10a and 10b. The electrode plate 10d on the anode side and the electrode plate 10e on the cathode side are respectively arranged while maintaining the interval defined by the spacers 10a and 10b. However, since the electrode plate unit 10 illustrated in FIG. 5 is accommodated in the housing 20 as an aggregate polymerized as shown in FIG. 6, between the electrode plate units 10 adjacent to each other, The same electrode plates 10d and 10e are shared with each other.

  As shown in FIG. 7, the spacers 10 a and 10 b constituting the electrode plate unit 10 are lattice frames having substantially the same shape, and are symmetrical to each other when facing each other. Each of the spacers 10a and 10b has a plurality of vertical frame portions 13 in the rectangular outer peripheral frame portions 11 and 12, and the vertical frame portions 13 are arranged in parallel with each other at a predetermined interval in the vertical direction. It extends to. Thereby, each vertical frame part 13 partitions each electrolytic chamber formed in each outer peripheral frame part 11 and 12 into a plurality of channels, and causes each channel to function as a flow path through which the electrolyzed water flows evenly. .

  Accordingly, the outer peripheral frame portions 11 and 12 constituting the spacers 10a and 10b are received by the vertical frame portions 13 positioned in the outer peripheral frame portions 11 and 12 by fitting the electrode plates 10d and 10e. The fitting recesses 14 and 15 have a depth. Further, each outer peripheral frame portion 11, 12 is formed in an uneven shape having fitting recesses 11 a, 12 a having a depth equivalent to that of each fitting recess 14, 15. For this reason, each outer periphery frame part 11 and 12 becomes a shape provided with fitting recessed part 11a, 12a which comprises uneven | corrugated shape, and fitting convex part 11b, 12b adjacent to this.

  Accordingly, when the spacers 10a and 10d are opposed to each other, the spacers 10a and 10d have a symmetrical uneven shape. When the electrode plate units 10 are overlapped with each other, the fitting recesses 11a and 12a included in the outer peripheral frame portions 11 and 12 are provided. 12a and fitting convex part 12b, 11b become the positional relationship which mutually fits. In each of the spacers 10a and 10b, the depth of the fitting recesses 14 and 15 into which the electrode plates 10d and 10e of the spacers 10a and 10b are fitted is equal to the thickness of the electrode plates 10d and 10e. In addition, the fitting recesses 11a and 12a of the outer peripheral frame portions 11 and 12 are also set to a depth equivalent to the plate thickness of the electrode plates 10d and 10e.

  In the diaphragm electrolytic cell D according to the present invention having such a configuration, the spacers 10a and 10b constituting both the electrode plate units 10 are identical to the fitting recesses 14 and 15 of the outer peripheral frame portions 11 and 12 facing each other. The electrode plates 10d and 10e can be fitted together so that the outer peripheral frame portions 11 and 12 can be brought into close contact with each other, and the electrolyzed water from each electrolytic chamber formed in the outer peripheral frame portions 11 and 12 Leakage of electrolytically generated water to the outside can be prevented.

  Further, if such an assembly structure of both electrode plate units 10 is adopted, when the both electrode plate units 10 are assembled to each other, a gasket or the like to be interposed between both outer peripheral frame portions 11 and 12 of both spacers 10a and 10b, etc. Thus, the number of parts can be reduced, the number of parts can be reduced, the number of assembling steps can be reduced, and the part cost can be reduced.

  Furthermore, if such an assembly structure of both electrode plate units 10 is adopted, the electrode plates 10d and 10e fitted in the fitting recesses 14 and 15 of the outer peripheral frame portions 11 and 12 of the spacers 10a and 10b are replaced with the spacers 10a and 10e. 10b (especially in the case of a synthetic resin) can be prevented from contracting, and the electrode plates 10d and 10e can be prevented from protruding from the spacers 10a and 10b.

  In the diaphragm electrolytic cell D according to the present invention, the diaphragm 10c constituting the electrode plate unit 10 and the spacers 10a and 10b sandwiching the diaphragm 10c are integrally formed with each other. The assembly variation in the positional relationship between 10b and the diaphragm 10c can be eliminated, and the assembly of the electrode plate unit 10 and its assembly can be further improved. Further, since the spacers 10a and 10b and the diaphragm 10c are in close contact with each other, the channel of each electrolysis chamber is not displaced due to secular change, and the uniform flow path (channel) of the electrolyzed water is eliminated. ) Can be secured over a long period of time.

  In the diaphragm electrolyzer D according to the present invention, electrode plates 10d and 10e forming the assembly of the electrode plate units 10 can be made of different materials and different characteristics. For example, a Pt electrode that suitably functions as a cathode electrode is employed as the cathode side electrode plate 10e, and an electrode having different characteristics such as a Pt electrode and a (Pt-Ir) electrode is used as the anode side electrode 10d. By selectively using, various combinations of the cathode-side electrode plate 10e and the anode-side electrode plate 10d can be formed to generate electrolytically generated water having different characteristics.

A ... case, a1 ... case body, a2 ... front cover, B ... electric part, b1 ... support plate, b2 ... fan, b3 ... opening, C ... device body, D ... diaphragm electrolytic cell, E ... salt water tank DESCRIPTION OF SYMBOLS 10 ... Electrode plate unit, 10a, 10b ... Spacer, 10c ... Separator, 10d, 10e ... Electrode plate, 11, 12 ... Peripheral frame part, 11a, 12a ... Fitting recessed part, 11b, 12b ... Fitting convex part, 13 ... vertical frame part, 14, 15 ... fitting recess, 20 ... housing, 21 ... upper collar part, 22 ... lower collar part, 23 ... side spacer, 24 ... front side, rear side spacer, 31 (31a, 31b) ... Electrolyzed water supply pipes, 32a, 32b ... Electrolytically generated water outflow pipes, 33 ... Raw water supply pipes, 34 ... salt water supply pipes.

Claims (2)

A diaphragm sandwiched by a pair of spacers in which a plurality of vertical frames are formed in parallel in a rectangular outer peripheral frame portion , and the peripheral frame is fitted inside the outer peripheral frame portion of each spacer, and the vertical frame of the spacer coherent comprising a plurality of electrode plates unit constituted by a pair of anode plate and the cathode plate defining the electrolysis chamber of the plurality of channel-shaped in the vertical direction on both sides of the septum, to be electrolyzed water at the lower portion inside a housing having an electrically outlet for deriving electrolytic water generated in the previous SL electrolysis chamber to the site of the upper has a inlet section for introducing into the electrolysis chamber, each pair of spacers of the electrode plate unit the sealed an aggregate that was polymerized joined together at their outer peripheral frame portion, functions as the same polarity of the electrodes in the channel-shaped electrolyte chamber which is defined on both sides of the electrode plates each membrane of the electrode plate unit And supplied to the introduction port of the housing It is a perforated diaphragm electrolytic cell as electrolytic water produced the electrolytic water is generated and flows to each electrolyte chamber flows out from the outlet portion of the housing,
Each pair of spacers constituting each of the electrode plate units is fitted to a depth at which the peripheral portion of the electrode plate (anode plate or cathode plate) in close contact with the vertical frame is fitted inside the outer peripheral frame portion. A concave-convex fitting surface is formed on the outer peripheral frame portion to fit each other when the electrode plate units are overlapped, and the assembly of the electrode plate units is sealed in the housing A diaphragm membrane electrolytic cell characterized in that electrolyzed water respectively supplied to the electrode chambers defined by the electrode plate unit in a state does not leak to other electrolytic chambers. 2. The diaphragm membrane electrolytic cell according to claim 1, wherein the assembly of the electrode plate units is sealed in the casing through a spacer in close contact with both side end surfaces and both front and rear surfaces .

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