JP3579591B2 - Electrolytic cell - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electrolytic cell that generates acidic water and alkaline water by electrolyzing water.
[0002]
[Prior art]
As one of this type of electrolytic cell, water flowing into the inside through an inlet is divided and supplied to each of the electrolytic chambers partitioned by a diaphragm, and the electrolytic water is electrolyzed in each of the electrolytic chambers to form acidic water. There is a type in which alkaline water is generated and flows out through each outlet, for example, as disclosed in JP-A-6-296965.
[0003]
[Problems to be solved by the invention]
In the electrolytic cell described in JP-A-6-296965, there is no description about the specific configuration of the passage from the inlet to each outlet, and the inlet and each outlet are simply connected. It seems to be. In the electrolytic cell having such a configuration, particularly when the flow rate is small, when a pressure difference is generated in the water pressure in each passage due to a pressure fluctuation in each passage on the outflow side from the branching base point, each electrolytic chamber is And the flow rate of the acidic water generated by the electrolysis and the flow rate of the alkaline water are considerably different.
[0004]
[Means for Solving the Problems]
In order to address the above-described problems, the present invention provides an electrolytic cell in which a pair of electrodes is disposed in a pair of electrode chambers defined by the diaphragm inside a front shell and a rear shell which are liquid-tightly joined via a diaphragm. In one of the two shells, an inflow port into which tap water flows and an inflow port into which concentrated salt water flows are provided inside one of the shells to form a mixing chamber in which the tap water and the concentrated salt water flowing from these inflow ports are mixed. The dilute salt water adjusted in the mixing chamber flows into the electrode chamber through a pair of left and right chambers formed on one side of the mixing chamber, and is formed between the mixing chamber and both chambers. An electrolytic cell characterized in that a throttle portion is provided in each of the pair of branch passages.
[0006]
Operation and Effect of the Invention
In the electrolytic cell according to the present invention configured as described above , even when the flow rate of the tap water or the concentrated salt water flowing into the mixing chamber from the two inlets is small, the inflow side from the throttle portion provided in each branch passage is provided. The water pressure can be kept high. Therefore, even if a differential pressure is generated in the water pressure in each passage due to a pressure fluctuation in each passage on the outflow side from each throttle portion, since this differential pressure is suppressed through each throttle portion and transmitted to the inflow side, The difference in the flow rate (the amount of unbalance) supplied to each electrolytic chamber is suppressed, and the difference between the flow rate of the acidic water and the flow rate of the alkaline water generated by the electrolysis is suppressed. Is suppressed. Further, the water pressure in each electrolytic chamber can be reduced by each of the constricted portions, so that the load applied to the diaphragm can be reduced, and the durability of the diaphragm can be increased.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
An 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, a diaphragm 13 assembled in both shells 11, 12, and a pair of front and rear shells. Spacers 14 and 15, a pair of front and rear electrode plates 16 and 17, and 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 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 to be connected, and a flow cover 11b. , A recess 11j, 11k communicating with each branch passage B1, B2, a passage groove 11m forming a communication passage P1 communicating with the outlet 11h by the flow guide 11c, and a flow guide 11d. There is provided a passage groove 11n that forms a communication passage P2 that communicates with the outlet 11g, and a seal groove 11o. The hatched portion of the shell main body 11a shown in FIG. 4 indicates an adhesive 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 has recesses 12 a and 12 b facing the recesses 11 j and 11 k of the front shell 11 at a lower portion, and a seal facing the seal groove 11 o of the front shell 11. A groove 12c is provided at the peripheral edge, and a horizontally long recess 12d is provided at the top. The rear shell 12 is sandwiched between the front shell 11 and the 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 by a number of screws 19 shown in FIG. It is adapted to be joined and fixed to the front shell 11.
[0011]
As shown in FIG. 2, the diaphragm 13 is held between the two shells 11 and 12 while being sandwiched by the pair of front and rear spacers 14 and 15, and a pair of front and rear electrolysis chambers R <b> 1 are provided in the two shells 11 and 12. , R2. As shown in FIG. 6, the diaphragm 13 has a pair of left and right square holes 13a, 13b provided at the lower portion corresponding to the recesses 11j, 11k and 12a, 12b of the shells 11, 12, respectively. A pair of left and right round holes 13c and 13d are provided at the upper part, and a number of small holes 13e are provided at the peripheral part and the upper part.
[0012]
The pair of front and rear spacers 14 and 15 have a function of sandwiching the diaphragm 13, a function of setting a gap between the diaphragm 13 and each of the electrode plates 16 and 17 to a predetermined value, and a function of holding each of the electrode plates 16 and 17. As shown in FIG. 7 and FIG. 8, the upper and lower thin bridges C1 and C2 are connected to each other to be molded, and both thin bridges C1 and C2 are cut and removed. It is intended to be used in a state where it is done.
[0013]
The spacers 14 disposed on the front side are shown on the right side of FIG. 7 and 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 and a horizontally long square hole. 14c is provided on the lower side, and a communication cylinder 14d is provided on one upper side for communicating the upper part of the rear electrolytic chamber R2 with the communication path P1 formed in the front shell 11, and the peripheral edge of the rear surface shown on the right side in FIG. Are formed with a large number of engaging projections 14e which penetrate through the small holes 13e of the diaphragm 13 and fit into the large number of engaging holes 15e provided in the spacer 15. On the back surface of the spacer 14, a cylindrical projection 14f is formed which 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, 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 rectangular oblong hole 14a shown in FIG. A plurality of notches 14h for guiding water to the hole 14c and a plurality of notches 14i for guiding water upward from the horizontally long rectangular hole 14c (the width of the left notch in FIG. 8 is the width of the right notch) More widely formed).
[0014]
The spacers 15 disposed rearward are shown on the left side of FIG. 7 and the right side of FIG. 8, and each of the square holes 15a and 15b corresponding to each of the square holes 13a and 13b of the diaphragm 13 and a horizontally long square hole. 15c is provided in the lower part, and through holes 15d and 15f are provided in the upper part, into which the communication cylinder 14d and the cylindrical projection 14f of the spacer 14 fit, respectively. A 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 shown in 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) More widely formed).
[0015]
The pair of front and rear electrode plates 16 and 17 are formed by processing a pair of electrodes as shown in FIG. 9, then performing sintering plating, and then cutting and processing into two pieces as shown in FIG. 10. Thus, the two cylindrical embossed portions 16a, 16a and 17a, 17a are attached to the respective recesses 14h, 15h of both spacers 14, 15 for sandwiching the diaphragm 13 so as to be inside. . Each of the cylindrical embossed portions 16a, 16a and 17a, 17a is a portion to which each of the terminal screws 21 and 22 for energization is screwed and fixed, and each of the terminal screws 21 and 22 makes each of the shells 11 and 12 liquid-tight. It is 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 square hole on the left side of the diaphragm 13. The chamber D1 formed by the recesses 11j and 12a of the shells 11 and 12 communicating with the square holes 13a and the square holes 14a and 15a of the spacers 15 and the square hole 13b on the right side of the diaphragm 13 and the spacers 14 and 15 are formed. 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, and has a rectangular peripheral portion 18a and a rear lower left portion. A seal portion 18b and a right lower front seal portion 18c are provided. On both front and rear surfaces of the peripheral edge portion 18a, ribs 18d fitted into the seal grooves 11o and 12c of the shells 11 and 12 are provided. 8e are formed.
[0017]
In the electrolytic cell of the present embodiment configured as described above, when the tap water is supplied to the tap water inlet 11e and the concentrated salt water is supplied to the concentrated salt water inlet 11f, the tap water flowing from the tap water inlet 11e is supplied. And the concentrated salt water flowing from the concentrated salt water inlet 11f are mixed in the mixing chamber A formed in the front shell 11 to become diluted salt water, and the diluted salt water flows into the respective chambers D1, D2 through the branch passages B1, B2, respectively. Flows from each chamber D1, D2 to each electrolysis chamber R1, R2. Further, the dilute salt water flowing into each of the electrolysis chambers R1 and R2 is electrolyzed by applying a positive electrode to the front electrode plate 16 and applying a negative electrode to the rear electrode plate 17, for example. The alkaline water becomes acidic water, and 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 is generated in the rear electrolysis chamber R2. The alkaline water flows to the left outlet 11g through the communication tube 14d of the spacer 14 and the communication path P1 formed to the left of the front shell 11, and from each outlet 11h, 11g to each outlet pipe (not shown). Each is led to the point of use.
[0018]
By the way, in the electrolytic cell of the present embodiment, as shown in FIG. 4, each of the branch passages B1 and B2 (part of each of the branch passages from the branch starting point S to each of the electrolytic chambers R1 and R2) serves as a throttle passage. Have been. Therefore, even when the flow rates of the tap water and the 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 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 outlet side from each of the throttle passages B1 and B2, this pressure difference is suppressed through each of the throttle passages B1 and B2. Since the water flows to the inflow side, 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. Is suppressed. Further, the water pressure in each of the electrolytic chambers R1 and R2 can be reduced by the respective throttle passages B1 and B2, so that the load applied to the diaphragm 13 can be reduced, and the durability of the diaphragm 13 can be increased.
[0019]
In the above embodiment, as shown in FIG. 4, the present invention was implemented using the branch paths B1 and B2 as throttle paths, but as shown in FIG. 15, each chamber D1 of the branch paths B1 and B2 was used. , D2 (the respective throttles are provided in the respective branch passages from the branch starting point S to the respective electrolysis chambers R1, R2) to implement the present invention. In this modified embodiment, even when the flow rates of tap water and concentrated salt water supplied into the electrolytic cell through the inflow ports 11e and 11f are small, the water pressure on the inflow side of both the throttles E1 and E2 is kept high. Can be. 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 throttles E1 and E2, this pressure difference is suppressed through each of the throttles E1 and E2 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. Fluctuation in the generated flow rate is suppressed. Further, the water pressure in each of the electrolysis chambers R1 and R2 can be reduced by the throttles E1 and E2, so that the load applied to the diaphragm 13 can be reduced, and the durability of the diaphragm 13 can be increased.
[0020]
Further, in the modified embodiment shown in FIG. 15, the apertures E1 and E2 are provided at the ends of the branch paths B1 and B2 on the side of the chambers D1 and D2. What is necessary is just to be in the branch passage to each electrolysis chamber R1, R2, and is not limited to the arrangement position of the above embodiment. Further, in the above embodiment, the present invention was applied to an electrolytic cell that electrolyzes dilute salt water to generate acidic water and alkaline water, but 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 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 showing a process of manufacturing the 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. 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 view corresponding to FIG. 4, showing a modified embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Electrolysis tank, 11 ... Front shell, 11e, 11f ... Inlet, 11h, 11g ... Outlet, 12 ... Rear shell, 13 ... Membrane, 14, 15 ... Spacer, 16, 17 ... Electrode plate, 18 ... Packing, B1 , B2 ... branch path (throttle passage), R1, R2 ... electrolytic chamber, E1, E2 ... throttle.

Claims (4)

In an electrolytic cell provided with a pair of electrodes in a pair of electrode chambers defined by the diaphragm inside a front shell and a rear shell liquid-tightly joined via a diaphragm,
Providing an inflow port for tap water and an inflow port for concentrated salt water into one of the two shells to form a mixing chamber in which tap water and concentrated salt water flowing from these inflow ports are mixed, The dilute salt water adjusted in the mixing chamber flows through the pair of left and right chambers formed on one side of the mixing chamber into the electrode chamber, respectively, and a pair of dilute salts formed between the mixing chamber and the two chambers are formed. An electrolytic cell characterized in that a throttle portion is provided in each of the branch passages. 2. The electrolytic cell according to claim 1, wherein each of the pair of branch passages is a throttle passage as the throttle unit. 3. Electrolytic cell as claimed in claim 1, characterized in that as said throttle portion, digits Rio設 grain respectively the said pair of branch passage connection of both chambers. In an electrolytic cell provided with a pair of electrodes in a pair of electrode chambers vertically partitioned by the diaphragm inside the front shell and the rear shell liquid-tightly joined via the diaphragm,
An inflow port into which tap water flows and an inflow port into which concentrated salt water flows are provided in the lower inside of one of the two shells, and a mixing chamber is formed in which the tap water and the concentrated salt water flowing from these inflow ports are mixed. The dilute salt water adjusted in the mixing chamber flows into the electrode chamber through a pair of left and right chambers formed below the mixing chamber, and is formed between the mixing chamber and both chambers. An electrolytic cell, wherein a throttle portion is provided in each of a pair of branch passages.

Images