JP3993315B2 - Electrolytic cell - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrolytic cell in which water is electrolyzed to generate acidic water and alkaline water.
[0002]
[Prior art]
As one of this type of electrolytic cell, electrode plates are disposed on the back surfaces of a pair of spacers sandwiching a diaphragm, and these are accommodated in a pair of shells to form a pair of electrolytic chambers. The water supplied to is electrolyzed to produce acidic water and alkaline water, and is disclosed in, for example, JP-A-9-75947.
[0003]
[Problems to be solved by the invention]
In the electrolytic cell disclosed in the above-mentioned JP-A-9-75947, one electrode plate and a spacer are pre-assembled in one shell and the other electrode plate and spacer are pre-assembled in the other shell. As a result, it is necessary to prevent each electrode plate and each spacer from being detached from each shell when the two shells are joined and connected across the diaphragm. There is room for improvement in sex.
[0004]
In addition, the entire peripheral end surface of each electrode plate is exposed to each electrolysis chamber and comes into contact with the water in the electrolysis chamber, and electrolysis is also performed on the entire peripheral end surface of each electrode plate. It is necessary to perform deburring and surface treatment on the entire peripheral end surface of the electrode plate. For this reason, it is necessary to manufacture each electrode plate one by one, and there is room for improvement in terms of cost.
[0005]
The present invention, in order to solve the above problem, the recess forming respectively the peripheral edge of the diaphragm on the back of a pair of spacers for clamping in a state assembled with the pair of electrode plates of the diaphragm and both the spacer a peripheral portion and a front Symbol assembly with both side portions integrally accommodated in a recess of the packing formed in a closed loop of each power electrode plate accommodated in a pair of shells, said via a peripheral portion of the packing both An electrolytic cell comprising a shell joined and water supplied to the inside of both shells is electrolyzed in a pair of electrolytic chambers defined by the diaphragm. It is.
[0006]
[Effects of the invention]
In the electrolytic cell according to the present invention, the periphery of the diaphragm is sandwiched between the pair of spacers, and the electrode plates are assembled in the recesses formed on the back surfaces of the spacers. And by accommodating both sides of each electrode plate in the recess of the packing, the diaphragm, both spacers, both electrode plates, etc. can be easily integrated with the packing, and these are accommodated in a pair of shells. Thus, when the two shells are joined and connected, they can be easily handled as one part, and the assembling work can be easily performed.
[0007]
Also, when hitting the practice of the present invention, as electrode plates, employing a two electrode plates fabricated by cutting the surface treatment after molding with two pair at the center portion of the facilities shiso is Because the cut part of the electrode plate housed in the recess of the packing does not come into contact with the electrolyzed water, it is not necessary to perform deburring or surface treatment on the cut part, compared with the case where each electrode plate is manufactured one by one. Cost can be greatly reduced.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 show an embodiment of an electrolytic cell according to the present invention. This electrolytic cell includes a front shell 11 and a rear shell 12, and a diaphragm 13 assembled and accommodated in both shells 11 and 12. FIG. A pair of front and rear spacers 14 and 15, a pair of front and rear electrode plates 16 and 17, and a packing 18 are provided.
[0009]
As shown in FIGS. 1 to 4, the front shell 11 includes a shell main body 11a, a flow cover 11b bonded and fixed thereto, and a pair of flow guides 11c and 11d. The shell body 11a is connected to a tap water inlet 11e connected to a water pipe (not shown) via a water supply valve (not shown) and a concentrated salt water tank (not shown) via a concentrated salt water supply pump motor (not shown). A concentrated salt water inlet 11f, an alkaline water or acidic water outlet 11g, an acidic water or alkaline water outlet 11h are provided, and a mixing chamber A and a pair of branch paths B1 and B2 are provided by a flow cover 11b. A passage groove 11i that forms a communication passage P1 that communicates with the outflow port 11g by a flow guide 11c, a passage groove 11i that forms a communication passage P1 that communicates with the branch passages B1 and B2, and a flow guide 11d. Are provided with a passage groove 11n forming a communication passage P2 communicating with the outlet 11h, and a seal groove 11o. The hatched portion of the shell main body 11a shown in FIG. 4 indicates the bonding surface between the flow cover 11b and the pair of flow guides 11c and 11d.
[0010]
As shown in FIGS. 1 and 5, the rear shell 12 includes recesses 12 a and 12 b facing the recesses 11 j and 11 k of the front shell 11 in the lower part, and a seal facing the seal groove 11 o of the front shell 11. A groove 12c is provided at the periphery, and a horizontally elongated recess 12d is provided at the top. The rear shell 12 is formed by a number of screws 19 shown in FIG. 1 with a diaphragm 13, a pair of front and rear spacers 14 and 15, a pair of front and rear electrode plates 16 and 17, and a packing 18 sandwiched between the rear shell 12 and the front shell 11. The front shell 11 is joined and fixed.
[0011]
As shown in FIG. 2, the diaphragm 13 is held between the shells 11 and 12 with the peripheral edge being sandwiched between the pair of front and rear spacers 14 and 15, and the pair of front and rear is placed in the shells 11 and 12. The electrolytic chambers R1 and R2 are partitioned. Further, as shown in FIG. 6, the diaphragm 13 includes a pair of left and right square holes 13 a and 13 b provided in the lower portion corresponding to the recesses 11 j and 11 k and 12 a and 12 b of the shells 11 and 12, respectively. A pair of left and right round holes 13c, 13d are provided at the top, and a large number of small holes 13e are provided at the periphery and the top.
[0012]
The pair of front and rear spacers 14 and 15 hold the function of sandwiching the peripheral edge of the diaphragm 13, the function of setting the gap between the diaphragm 13 and the electrode plates 16 and 17 to a predetermined value, and the electrode plates 16 and 17. 7 and 8, it is formed in a state of being connected by a pair of upper and lower thin bridges C1 and C2, and both thin bridges C1 and C2 are formed. It is designed to be used in a state in which is cut and removed.
[0013]
The spacer 14 disposed on the front side is shown on the right side of FIG. 7 and on the left side of FIG. 8, and each of the square holes 14a and 14b corresponding to the square holes 13a and 13b of the diaphragm 13 and the horizontally long square hole are shown. 14c is provided in the lower part, and a communication cylinder 14d is provided on one side of the upper part of the rear electrolysis chamber R2 so as to communicate with a communication path P1 formed in the front shell 11. The peripheral edge of the rear surface shown on the right side of FIG. A plurality of engaging projections 14e are formed through the small holes 13e of the diaphragm 13 and fitted into a plurality of engaging holes 15e provided in the spacer 15. Further, on the back surface of the spacer 14, a cylindrical protrusion 14 f that passes through the circular hole 13 d of the diaphragm 13 and fits into the through hole 15 f formed in the spacer 15 is formed. On the other hand, as shown on the left side of FIG. 8, a recess 14g for assembling the electrode plate 16 is formed on the front surface of the spacer 14, and a horizontally long corner is formed from the left square hole 14a of FIG. A plurality of notches 14h for guiding water to the holes 14c and a plurality of notches 14i for guiding water upward from the horizontally long square holes 14c (the width of the left notch in FIG. 8 is the width of the right notch). Is more widely formed).
[0014]
The spacer 15 disposed on the rear side is shown on the left side of FIG. 7 and on the right side of FIG. 8, and each of the square holes 15a and 15b corresponding to the square holes 13a and 13b of the diaphragm 13 and a horizontally long square hole are shown. 15c is provided in the lower part, and the upper part is provided with through holes 15d and 15f into which the communicating cylinder 14d and the columnar protrusion 14f of the spacer 14 are fitted, respectively, and the engagement protrusion 14e of the spacer 14 is fitted in the periphery thereof. A joint hole 15e is formed through. Further, as shown on the right side of FIG. 8, a recess 15g for assembling the electrode plate 17 is formed on the back surface of the spacer 15, and a horizontally long corner is formed from the left square hole 15b of FIG. A plurality of notches 15h for guiding water to the holes 15c and a plurality of notches 15i for guiding water upward from the horizontally long rectangular holes 15c (the width of the left notch in FIG. 8 is the width of the right notch). Is more widely formed).
[0015]
As shown in FIG. 9, the pair of front and rear electrode plates 16 and 17 are subjected to surface treatment (firing plating) after being formed into a set of two pieces, and then the cut portions are side portions as shown in FIG. The two cylindrical projecting portions 16a, 16a and 17a, 17a are formed in the recesses 14g, 15g of the spacers 14, 15 sandwiching the diaphragm 13, respectively. It can be assembled inside. Each cylindrical projecting portion 16a, 16a and 17a, 17a is a portion to which each terminal screw 21 and 22 for energization is screwed and fixed, and each terminal screw 21, 22 makes each shell 11, 12 liquid-tight. It is designed to be screwed through.
[0016]
As shown in FIGS. 11 to 14, the packing 18 has a function of integrating the diaphragm 13, the pair of front and rear spacers 14 and 15, and the pair of front and rear electrode plates 16 and 17, and a left-side square hole of the diaphragm 13. 13 a and the right corner hole 13 b of the diaphragm 13 and the spacer 13 formed by the recesses 11 j and 12 a of the shells 11 and 12 communicating with the corner holes 14 a and 15 a of the spacers 14 and 15. And has a function of partitioning the chamber D2 formed by the recesses 11k and 12b of the shells 11 and 12 communicating with each other through the square holes 14b and 15b. A rectangular peripheral edge 18a formed in a closed loop shape having a recess 18a1 for receiving the peripheral edge and receiving both sides of both electrode plates 16 and 17, and a seal on the left lower rear And 18b, has a right lower front of the sealing portion 18c, the front and rear surfaces of the peripheral portion 18a seal groove 11o of the shells 11 and 12, ribs 18d that fits 12c, 18e are formed respectively.
[0017]
In the electrolytic cell of the present embodiment configured as described above, when tap water is supplied to the tap water inlet 11e and concentrated salt water is supplied to the concentrated salt water inlet 11f, tap water flows from the tap water inlet 11e. The concentrated salt water flowing in from the concentrated salt water inlet 11f is mixed in the mixing chamber A formed in the front shell 11 to become diluted salt water, and this diluted salt water flows into the chambers D1 and D2 through the branch paths B1 and B2, respectively. , Flows from each chamber D1, D2 to each electrolysis chamber R1, R2. Further, the dilute salt water flowing into the electrolysis chambers R1 and R2 is electrolyzed, for example, by applying a positive electrode to the front electrode plate 16 and a negative electrode to the rear electrode plate 17, respectively. The acidic water that has become alkaline water and is generated in the front electrolysis chamber R1 flows to the right outlet 11h through the communication passage P2 formed on the right side of the front shell 11, and is generated in the rear electrolysis chamber R2. Alkaline water flows to the left outlet 11g through the communication tube 14d of the spacer 14 and the communication passage P1 formed on the left side of the front shell 11, and from each outlet 11h, 11g to each outlet pipe (not shown). Each leads to the point of use.
[0018]
By the way, in the electrolytic cell of this embodiment, the peripheral part of the diaphragm 13 is pinched | interposed with a pair of spacers 14 and 15, and each electrode plate 16 and 17 is put into the recesses 14g and 15g provided in the back surface of each spacer 14 and 15. 15, the peripheral portions of the spacers 14 and 15 and the diaphragm 13 and the both side portions of the electrode plates 16 and 17 are accommodated in the recesses 18 a 1 of the packing 18, as shown in FIG. The packing 13, the spacers 14, 15 and the electrode plates 16, 17 and the like can be easily integrated with each other, and these are accommodated in the pair of shells 11 and 12 so that the shells 11 and 12 are accommodated. When joining and connecting, these can be easily handled as one part, and assembly work can be easily performed.
[0019]
Moreover, in the electrolytic cell of this embodiment, both electrode plates 16 and 17 are subjected to surface treatment after being formed and processed in pairs, and then cut into two pieces so that the cut portions become side portions. The electrode plate manufactured in this way is used, and the side portions of the electrode plates 16 and 17 accommodated in the recess 18a1 of the packing 18 become cut portions and do not come into contact with the electrolytic water. It is not necessary to perform surface treatment, and the cost can be greatly reduced as compared with the case where each of the electrode plates 16 and 17 is manufactured one by one.
[0020]
Moreover, in the electrolytic cell of this embodiment, as shown in FIG. 4, each branch path B1, B2 (a part of each branch path from the diversion base point S to each electrolytic chamber R1, R2) is a throttle path. Has been. For this reason, even when the flow rates of tap water and concentrated salt water supplied into the electrolytic cell through the inlets 11e and 11f are small, the water pressure on the inflow side from both throttle passages B1 and B2 can be maintained at a higher level. Therefore, even if a differential pressure occurs in the water pressure in each passage due to pressure fluctuations in each passage on the outflow side from each throttle passage B1, B2, this differential pressure is suppressed via each throttle passage B1, B2. Since it is transmitted to the inflow side, the difference between the flow rates supplied to the electrolysis chambers R1 and R2 is suppressed, and the difference between the flow rate of acidic water generated by electrolysis and the flow rate of alkaline water is suppressed. The fluctuation of each generated flow rate is suppressed. Moreover, the water pressure in each electrolysis chamber R1, R2 can be reduced by each throttle passage B1, B2, the load applied to the diaphragm 13 can be reduced, and the durability of the diaphragm 13 can be enhanced.
[0021]
In the above embodiment, the present invention was implemented in an electrolytic cell that electrolyzes dilute salt water to generate acidic water and alkaline water, but also in an electrolytic cell that electrolyzes tap water to generate acidic water and alkaline water. The present invention can be similarly implemented.
[Brief description of the drawings]
FIG. 1 is an exploded front view of an electrolytic cell according to the present invention.
FIG. 2 is a vertical side view of the electrolytic cell shown in FIG. 1 in an assembled state.
3 is a rear view of the front shell shown in FIGS. 1 and 2. FIG.
4 is a rear view of the shell main body shown in FIG. 3. FIG.
FIG. 5 is a front view of the rear shell shown in FIGS. 1 and 2;
6 is a front view of the diaphragm shown in FIGS. 1 and 2. FIG.
7 is a view showing a rear surface of a front spacer and a front surface of a rear spacer shown in FIG. 2; FIG.
8 is a view showing a front surface of a front spacer and a back surface of a rear spacer shown in FIG. 2. FIG.
9 is a diagram showing a manufacturing process of a pair of front and rear electrode plates shown in FIG. 2. FIG.
10 is a front view of each electrode plate shown in FIG. 9; FIG.
FIG. 11 is a front view of the packing shown in FIG. 2;
12 is a rear view of the packing shown in FIG. 2. FIG.
13 is a cross-sectional view taken along line 13-13 in FIG.
14 is a cross-sectional view taken along line 14-14 of FIG.
FIG. 15 is a front view of an assembly in which a diaphragm, a pair of spacers, and a pair of electrode plates are integrated by packing.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Front shell, 11e, 11f ... Inlet, 11h, 11g ... Outlet, 12 ... Rear shell, 13 ... Diaphragm, 14, 15 ... Spacer, 16, 17 ... Electrode plate, 18 ... Packing, 18a1 ... Recess, B1 , B2: Branch path (throttle path), R1, R2: Electrolytic chamber.

Claims (2)

Both side portions of the peripheral edge and front Symbol respective conductive plates of the diaphragm and both the spacer peripheral portion of the diaphragm in a state assembled with the pair of electrode plates in recesses formed respectively on the back of a pair of spacers for clamping Are assembled in a pair of shells, and the shells are joined to each other through the peripheral edge of the packing. An electrolytic cell characterized in that water supplied to the inside is electrolyzed in a pair of electrolytic chambers partitioned by the diaphragm . As the pair of electrode plates, adopted two electrode fabricated by cutting the surface treatment after molding with two pair at the center portion of the facilities basil, wherein the cutting portion of these two electrode plates The electrolytic cell according to claim 1, wherein the electrolytic cell is housed in a recess of the packing.

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