JP2000051856A - Electrolytic cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrolytic cell capable of using a pair of electrode plates good in attaching properties and produced in low cost. SOLUTION: In an electrolytic cell constituted so that electrode plates are respectively arranged to the rear surfaces of a pair of spacers holding a diaphragm therebetween and housed in a pair of shells to form a pair of electrolytic chambers, as both spacers, spacers 14 and 15 having recessed places 14g and 15g holding the peripheral edge parts of the diaphragm 13 and attaching the electrode plates 16 and 17 to the rear surfaces of the spacers are employed and the diaphragm 13, the spacers 14 and 15 and the electrode plates 16 and 17 are preliminarily integrated by a packing 18 having the recessed place 18a1 housing the peripheral edge parts of the diaphragm 13 and the spacers 14 and 15 and both side parts of the electrode plates 16 and 17 to be formed into a closed loop shape to be housed in both shells. Both electrode plates 16 and 17 are desirally produced so as to be molded in one set of two to be surface- treated and subsequently cut into two parts so that cut parts become side parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic cell in which water is electrolyzed to produce acidic water and alkaline water.

[0002]

2. Description of the Related Art As one type of this type of electrolytic cell, an electrode plate is provided on the back of a pair of spacers sandwiching a diaphragm, and these are accommodated in a pair of shells to form a pair of electrolytic chambers. There is a type in which water supplied to each of these electrolysis chambers is electrolyzed to generate acidic water and alkaline water,
For example, it is disclosed in JP-A-9-75947.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the electrolytic cell disclosed in Japanese Patent No. 5947, one electrode plate and a spacer are pre-assembled in one shell, and the other electrode plate and a spacer are pre-assembled in the other shell, and these are joined with a diaphragm interposed therebetween. Because it is assembled by connecting, it is necessary to prevent each electrode plate and each spacer from coming off from each shell when joining and connecting both shells across the diaphragm, and there is room for improvement in assemblability. is there.

Further, the entire peripheral end face of each electrode plate is exposed to each electrolytic chamber and comes into contact with water in the electrolytic chamber, and at the time of electrolysis, electrolysis is also performed on the entire peripheral end face of each electrode plate. Therefore, it is necessary to perform deburring and surface treatment on the entire peripheral end surface of each electrode plate. For this reason, it is necessary to manufacture each electrode plate one by one, and there is room for improvement in cost.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems. An electrode plate is provided on a back surface of a pair of spacers sandwiching a diaphragm, and these are disposed in a pair of shells. Forming a pair of electrolysis chambers, and electrolyzing water supplied to each of these electrolysis chambers to generate acidic water and alkaline water. A pair of spacers having a recess for holding and mounting the electrode plate on the back side are employed, and the recesses for accommodating the peripheral portions of both spacers and the diaphragm and for accommodating both side portions of the electrode plates are provided. It is characterized in that the diaphragm, the spacers, and the electrode plates are integrated in advance by means of a packing formed in a closed loop shape and accommodated in the shells. In this case, as the two electrode plates, an electrode plate manufactured by forming a pair of two and then performing a surface treatment and then cutting the two into two pieces so that the cut portion becomes a side portion is adopted. Is desirable.

[0006]

In the electrolytic cell according to the present invention, the outer periphery of the diaphragm is sandwiched between a pair of spacers, and each electrode plate is mounted in a recess provided on the back surface of each spacer. By accommodating the periphery of the diaphragm and both sides of both electrode plates in the recesses of the packing, the diaphragm, both spacers, both electrode plates, etc. can be easily integrated with the packing,
Also, when these are accommodated in a pair of shells and both shells are joined and connected, these can be easily handled as one part, and the assembling work can be easily performed.

In carrying out the present invention, the two electrode plates were formed by forming a pair of the two, then performing a surface treatment, and then cutting the two into two pieces so that the cut portions would be side portions. When the electrode plate is adopted, the side portion of the electrode plate housed in the recess of the packing serves as a cut portion and does not come into contact with the electrolytic water, so there is no need to perform deburring or surface treatment on the cut portion, The cost can be greatly reduced as compared with a case where each electrode plate is manufactured one by one.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of an electrolytic cell according to the present invention. The electrolytic cell comprises a front shell 11 and a rear shell 12, and both shells 1 and 2.
The diaphragm 13 assembled and accommodated in the first and second pairs 12, 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.

As shown in FIGS. 1 to 4, the front shell 11 includes a shell body 11a, a flow cover 11b adhered and fixed to the shell main body 11a, 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 to a concentrated salt water tank (not shown) via a concentrated salt water supply pump motor (not shown). A mixing chamber A and a pair of branch passages B1, B2 are provided with a concentrated salt water inlet 11f, an outlet 11g of alkaline water or acidic water, an outlet 11h of acidic water or alkaline water, and a flow cover 11b. Channel groove 11i forming
And the recesses 11j and 11k communicating with the respective branch paths B1 and B2.
And a passage groove 11m forming a communication passage P1 communicating with the outlet 11g by the flow guide 11c, and a communication passage P2 communicating with the outlet 11h by the flow guide 11d.
And a seal groove 11o. The hatched portion of the shell main body 11a shown in FIG. 4 is a flow cover 11b and a pair of flow guides 11c, 11c.
d shows the bonding surface.

As shown in FIGS. 1 and 5, the rear shell 12 has recesses 12a and 12b opposed to the recesses 11j and 11k of the front shell 11 at a lower portion.
A seal groove 12c facing the seal groove 11o of the front shell 11 is provided on the periphery, and a horizontally long recess 12d is provided on the upper part. The rear shell 12 includes a diaphragm 13 between the front shell 11 and a pair of front and rear spacers 1.
4, 15, a pair of front and rear electrode plates 16, 17 and packing 1
8 are joined and fixed to the front shell 11 by a large number of screws 19 shown in FIG.

As shown in FIG. 2, the diaphragm 13 is held between the two shells 11 and 12 while the peripheral edge is held between the pair of front and rear spacers 14 and 15, and the two shells 1 and 2 are held.
A pair of front and rear electrolysis chambers R1 and R2 are formed in sections 1 and 12, respectively. Also, as shown in FIG. 6, the diaphragm 13 is provided with the recesses 11j, 11k and 12a, 12a, 12k of the shells 11, 12.
b, a pair of left and right square holes 13a, 13b provided at the lower portion, and a pair of left and right round holes 13c, 13d at the upper portion.
It has.

The pair of front and rear spacers 14 and 15 are
3, a function of holding the gap between the diaphragm 13 and each of the electrode plates 16 and 17 at a predetermined value, and a function of
6 and 17 are held, and as shown in FIG. 7 and FIG. 8, are formed in a state where they are connected by a pair of upper and lower thin bridges C1 and C2, It is designed to be used with both thin bridges C1, C2 cut and removed.

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 each of the square holes 13a and 13b of the diaphragm 13 is horizontally elongated. Is provided at the lower portion, and a rear electrolytic chamber R is provided.
A communication cylinder 14d is provided on one side of the upper portion of the front shell 11 to communicate the upper portion of the second member 2 with a communication path P1 formed in the front shell 11, and FIG.
A small hole 13e of the diaphragm 13 is provided on the periphery of the back surface shown on the right side of FIG.
, A large number of engagement projections 14e are formed to fit into a large number of engagement holes 15e provided in the spacer 15. On the back surface of the spacer 14, a cylindrical projection 14f is formed that penetrates the round hole 13d of the diaphragm 13 and fits into the through hole 15f formed in the spacer 15. On the other hand, spacer 1
As shown on the left side of FIG.
A recess 14g for assembling is formed, a plurality of notches 14h for guiding water from the left square hole 14a in FIG. 8 to the horizontally long square hole 14c, and upward from the horizontally long square hole 14c. A plurality of cutouts 14i (in FIG. 8, the width of the left cutout is wider than the width of the right cutout in FIG. 8) are formed.

The spacer 15 disposed rearward is shown on the left side of FIG. 7 and the right side of FIG. 8, and is horizontally elongated with the square holes 15a and 15b corresponding to the square holes 13a and 13b of the diaphragm 13. Are provided at the lower portion, and through holes 15d and 15f are provided at the upper portion where the communication tube 14d of the spacer 14 and the cylindrical projection 14f are fitted, respectively, and the engaging projection 14e of the spacer 14 is fitted around the periphery thereof. A mating engagement hole 15e is formed to penetrate. 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 rectangular oblong hole 15b on the left side of FIG. A plurality of notches 15h for guiding water to the hole 15c and a plurality of notches 15i for guiding water upward from the horizontally long rectangular hole 15c (the width of the left notch in FIG. 8 is the width of the right notch) Is formed more widely).

The front and rear pair of electrode plates 16 and 17 are formed into a pair as shown in FIG. 9 and then subjected to a surface treatment (fired plating), and thereafter, as shown in FIG. Are cut into two pieces so that each side is a side part, and two cylindrical embossed portions 16a, 1 are respectively provided in recesses 14g, 15g of both spacers 14, 15 which sandwich the diaphragm 13.
6a, 17a, and 17a are assembled such that they face inside. Each cylindrical stamping portion 16a, 16
a, 17a and 17a are terminal screws 21 and 22 for energization.
Are screwed and fixed, and each terminal screw 2
The reference numerals 1 and 22 are adapted to penetrate through the shells 11 and 12 in a liquid-tight manner and to be screwed.

As shown in FIGS. 11 to 14, the packing 18 has the function of integrating the diaphragm 13, the pair of front and rear spacers 14, 15 and the pair of front and rear electrode plates 16, 17 and the left side of the diaphragm 13. Shells 11 and 1 communicating with each other through the square hole 13a and the square holes 14a and 15a of both spacers 14 and 15.
The chamber D1 formed by the two recesses 11j, 12a, the square hole 13b on the right side of the diaphragm 13, and both spacers 14,
15 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 respective square holes 14b and 15b. Recess 18 for accommodating the peripheral portion of the electrode plate and for accommodating both side portions of both electrode plates 16 and 17.
rectangular peripheral part 1 formed in a closed loop shape having a1
8a, a left lower rear seal portion 18b, and a right lower front seal portion 18c. Seal grooves 11o and 12c of the shells 11 and 12 are provided on both front and rear surfaces of the peripheral edge portion 18a.
Are formed respectively.

In the electrolytic cell of this 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,
The tap water flowing from the tap water inlet 11e and the concentrated salt water flowing from the concentrated salt water inlet 11f are mixed in a mixing chamber A formed in the front shell 11 to become diluted salt water, and the diluted salt water passes through each of the branch passages B1 and B2. Each chamber D1, D2
And flows from each of the chambers D1 and D2 to each of the electrolytic chambers R1 and R2. Further, the dilute salt water flowing into each of the electrolytic chambers R1 and R2 is electrolyzed, for example, by applying a positive electrode to the front electrode plate 16 and applying a negative electrode to the rear electrode plate 17 to form acidic water and acidic water, respectively. The acidic water generated in the front electrolysis chamber R1 flows to the right outlet 11h through the communication path P2 formed to the right of the front shell 11, and the rear electrolysis chamber R1 becomes alkaline water.
The alkaline water generated in Step 2 is connected to a communication tube 14d of the spacer 14 and a communication passage P formed on the left side of the front shell 11.
1 to the outlet 11g on the left through each outlet 1
From 1h and 11g, they are respectively guided to use locations through respective outlet pipes (not shown).

In the electrolytic cell according to the present embodiment, the periphery of the diaphragm 13 is sandwiched between a pair of spacers 14, 15, and a recess 14 is provided on the back of each spacer 14, 15.
g, 15g with the electrode plates 16, 17 assembled
By accommodating the peripheral portions of the spacers 14 and 15 and the diaphragm 13 and both side portions of the electrode plates 16 and 17 in the recesses 18a1 of the packing 18, as shown in FIG.
At 8, the diaphragm 13, both spacers 14, 15 and both electrode plates 1
6, 17 and the like can be easily integrated, and these can be accommodated in a pair of shells 11
When joining and connecting the components 12, they can be easily handled as one part, and the assembling work can be easily performed.

In the electrolytic cell according to the present embodiment, the two electrode plates 16 and 17 are subjected to surface treatment after being formed in pairs, and then subjected to a surface treatment, so that the cut portions become side portions. An electrode plate manufactured by cutting is adopted, and each of the electrode plates 16 housed in the recess 18a1 of the packing 18 is used.
Because the side of 17 becomes a cut part and does not come in contact with electrolyzed water,
There is no need to perform deburring or surface treatment on the cut portion, and the cost can be greatly reduced as compared with a case where each of the electrode plates 16 and 17 is manufactured one by one.

Further, in the electrolytic cell according to the present embodiment, as shown in FIG.
(A part of each branch passage extending from each to the electrolytic chambers R1 and R2) is a throttle passage. Therefore, the inlets 11e, 11f
When the flow rates of the tap water and the concentrated salt water supplied to the electrolytic cell through the flow passage are small, the water pressure on the inflow side from both the throttle passages B1 and B2 can be maintained at a high state. Therefore,
Even if a pressure difference occurs in the water pressure in each passage due to a pressure fluctuation in each passage on the outflow side from each of the throttle passages B1 and B2, this pressure difference is suppressed through each of the throttle passages B1 and B2 and the inflow side is reduced. Therefore, the difference between the flow rates supplied to the respective electrolytic chambers R1 and R2 is suppressed, and the difference between the flow rate of the acidic water generated by the electrolysis and the flow rate of the alkaline water is suppressed. Fluctuations in the generated flow rate are suppressed. Also,
The water pressure in each of the electrolytic chambers R1 and R2 can be reduced by the respective throttle passages B1 and B2, the load applied to the diaphragm 13 can be reduced, and the durability of the diaphragm 13 can be increased.

In the above embodiment, the present invention is applied to an electrolytic cell that electrolyzes dilute salt water to generate acidic water and alkaline water. However, an electrolytic cell that electrolyzes tap water to generate acidic water and alkaline water is used. The present invention can be similarly applied to a tank.

[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 sectional side view in a state where the electrolytic cell shown in FIG. 1 is assembled.

FIG. 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. 5 is a front view of the rear shell shown in FIGS. 1 and 2;

FIG. 6 is a front view of the diaphragm shown in FIGS. 1 and 2;

FIG. 7 is a diagram illustrating a back surface of the front spacer and a front surface of the rear spacer illustrated in FIG. 2;

8 is a diagram illustrating a front surface of a front spacer and a rear surface of a rear spacer illustrated in FIG. 2;

FIG. 9 is a view illustrating a process of manufacturing the pair of front and rear electrode plates illustrated in FIG. 2;

FIG. 10 is a front view of each electrode plate shown in FIG. 9;

FIG. 11 is a front view of the packing shown in FIG. 2;

FIG. 12 is a rear view of the packing shown in FIG. 2;

FIG. 13 is a sectional view taken along the line 13-13 in FIG. 11;

FIG. 14 is a sectional view taken along the line 14-14 in FIG. 11;

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]

11: Front shell, 11e, 11f: Inlet, 11
h, 11g ... outlet, 12 ... rear shell, 13 ... diaphragm,
14, 15 ... spacer, 16, 17 ... electrode plate, 18 ... packing, 18a1 ... recess, B1, B2 ... branch path (throttle passage), R1, R2 ... electrolytic chamber.

Claims (2)

[Claims] An electrode plate is provided on the back of a pair of spacers sandwiching a diaphragm, and these are accommodated in a pair of shells to form a pair of electrolytic chambers, and water supplied to each of the electrolytic chambers is formed. In an electrolytic cell which is configured to generate acidic water and alkaline water by electrolysis, a pair of spacers having a concave portion for holding the electrode plate on the back side while sandwiching a peripheral portion of the diaphragm as the both spacers is adopted. The diaphragm, the spacers, and the packing are formed in a closed loop shape having recesses for accommodating the periphery of the spacers and the periphery of the diaphragm and accommodating both sides of the electrode plates. An electrolytic cell, wherein the two electrode plates are integrated beforehand and accommodated in the two shells. 2. As the two electrode plates, an electrode plate manufactured by forming a pair of two and then performing a surface treatment and then cutting the two into two so that a cut portion becomes a side portion is employed. The electrolytic cell according to claim 1, wherein: