JPH0217007Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a water electrolyzer having a cleaning circuit, and more specifically, a cleaning liquid circuit for circulating cleaning liquid in an electrolytic cell is provided separately from an electrolyzed water circuit, and The present invention relates to a water electrolysis device in which a cleaning liquid tank is provided in the cleaning liquid circuit and a valve of the circuit is opened and closed by moving forward and backward.

[Problems that the invention aims to solve] The space between the negative electrode and the positive electrode is divided into an anode chamber and a cathode chamber by an electrolytic diaphragm, and the water in both electrode chambers is electrolyzed to produce alkaline ionized water and acidic ionized water. During use of the produced water electrolyzer, calcium carbonate accumulates on the cathode of the electrolytic cell, reducing the electrolysis efficiency. In particular, in an electrolytic cell having a cathode chamber with a minute gap, such as a flowing water electrolysis device, a problem arises in that the cathode chamber is clogged with adhesion of calcium carbonate and the flow of water is obstructed. Therefore, the electrolytic cell must be appropriately cleaned with a cleaning liquid such as a hydrochloric acid solution.

Conventionally, the acidic water drain of the electrolyzer was located near the electrolytic cell and was always open, so when cleaning, the cleaning solution was sent through the acidic water drain, passed through the electrolytic cell, and then discharged from the alkaline water drain. Ta. However, recent water electrolysis devices that supply source water under constant pressure have begun discharging not only alkaline water but also acidic water by piping it to a wastewater treatment tank installed in a remote location. The distance between the water drainage outlets has become long, making cleaning work extremely difficult. In addition, this requires specialized techniques for cleaning, requiring a skilled person to visit the user each time cleaning is performed, resulting in a significant cost for maintenance of the electrolytic device.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems by providing a water electrolyzer equipped with a cleaning device that has a simple structure and can be easily operated by anyone.

[Means for Solving the Problems] The above object of the present invention is to provide a water supply section on one side of an electrolytic cell in which the anode and cathode are partitioned into an anode chamber and a cathode chamber by an electrolytic diaphragm, and a water supply section on the other side. In a water electrolyzer that is equipped with a pair of drainage parts for alkaline water and acidic water, as well as an on-off valve in the water supply part and the drainage part, the electrolyzed water circuit from the water supply part to the on-off valve in the drainage part has at least a A pair of valves are provided on the cleaning liquid supply side and the recovery side of this cleaning bypass circuit to stop the flow of fluid from the electrolytic circuit, and a pair of valves are provided on the cleaning liquid supply side and the recovery side of the cleaning bypass circuit, and a pair of valves are provided on the cleaning liquid supply side and the recovery side of the cleaning bypass circuit, and This is achieved by providing a cleaning liquid tank on the side, which is provided with at least a protrusion for opening the valve and a cleaning liquid inlet/output path, so as to be able to approach and separate from the valve body of the recovery side valve.

[Embodiment of the invention] Hereinafter, an embodiment of the invention will be described based on the drawings.

FIG. 1 is a flowchart of an electrolyzed ionized water generating device equipped with a cleaning device according to the present invention, in which a positive electrode 3 is arranged in an outer cylinder constituting a negative electrode 2, and a gap between these two electrodes 2 and 3 is shown. This is an electrolytic cell whose interior is partitioned into a cathode chamber 2' and an anode chamber 3' by an electrolytic diaphragm 4.

The electrolytic cell 1 is connected to a water supply pipe 5 that communicates with one side of the cathode chamber 2' and the anode chamber 3', and constitutes a water supply section that supplies source water. A pair of communicating drain pipes 6a and 6b are connected,
It constitutes a pair of drainage parts that take out alkaline ionized water and acidic water separately.

The water supply section and the pair of drainage sections are each provided with on-off valves 7a, 7b, and 7c such as electromagnetic valves, and these on-off valves 7a, 7b, and 7c open the pipes during the electrolytic treatment and perform the cleaning operation described later. The inside is designed to close the duct. Although a solenoid valve is exemplified here as an on-off valve, it is of course possible to use a valve.

Reference numeral 8 denotes a cleaning bypass circuit connected to an electrolyzed water circuit extending from the water supply section through the electrolytic cell to the drainage section, and provided to cooperate with the electrolyzed water circuit to circulate washing water at least within the electrolytic cell. (hereinafter referred to as the cleaning circuit). In the illustrated embodiment, the cleaning circuit 8 is connected to the water supply pipe 8a and the alkaline water drain pipe 6b, but the configuration is not limited to this. The structure may be such that the battery is introduced from the cathode chamber 2' (or anode chamber 3') of the electrolytic cell 1 and led out from the anode chamber 3' (or cathode chamber 2'). This is intended to include all cases where the cathode chamber 2' is circulated.

The cleaning bypass circuit 8 has a check valve 9 on the cleaning liquid supply side 8a and also has an on-off valve 10 on the cleaning liquid recovery side 8b, so that normally fluid does not flow from the electrolyzed water circuit to the cleaning circuit. In the illustrated embodiment, the on-off valve 10 is a check valve in which a valve body 10a, such as a ball valve, is biased by a spring 10b so as to stop the flow from the electrolyzed water circuit.

A cleaning liquid tank device 11 is interposed downstream of the recovery side on-off valve 10 of the cleaning bypass circuit 8 to open the on-off valve 10 and supply cleaning liquid to the cleaning circuit 8 .

This cleaning liquid tank device 11 has an actuator 11c that presses the valve body 10a of the on-off valve 10 to open the operating element 11c protruding from the attachment part 11b to the supply port 8c, and also has a built-in cleaning liquid recovery path 12a and a supply path 12b. Accordingly, a pump 13 for delivering cleaning liquid is provided in the supply path 12b. A check valve 14 is installed in the cleaning liquid recovery path 12a and supply path 12b of the tank 1 as shown in the figure.
a, 14b may be provided. Further, the pump 13 is not necessarily built into the tank device 11, but may be provided in the bypass circuit 8 itself.

The cleaning liquid tank device 11 configured as described above is screwed through an O-ring 15 into the cleaning liquid supply port 8c, which is open at one end and extends downstream of the on-off valve 10 in the cleaning liquid circulation path and communicates with the cleaning liquid supply side 8b. Alternatively, it is slidably press-fitted, and the operating element 11c at the tip thereof is fitted so as to be able to move forward and backward toward the valve body 10a of the recovery side on-off valve 10.

In the figure, 16 is a groove formed on the outer periphery of the tank tip 11b to communicate the cleaning liquid supply path 12b of the tank 11 and the supply side 8b of the cleaning circuit 8. The design is such that when the portion 11b is pushed in, the tip actuator 11c communicates with the valve body 10a at the open position. Reference numeral 17 denotes a check valve that is installed as necessary to prevent liquid from flowing out when the tank device is removed.

In addition, if the tank device 11 can move forward and backward, the supply port 8
It may be a type that can be fitted into c, or it may be removable. Furthermore, the tank body 11a and the mounting portion 11b of the tank device 11 are connected to the recovery path 12a and the supply path 1.
It is sufficient if they are connected by 2b, and they do not necessarily have to be integral.

Next, the operation of the present invention will be explained.

When generating ionized water using the electrolysis device of the present invention, first, the actuator 11c of the cleaning tank 11 is connected to the on-off valve 1.
0 and return to the position where the on-off valve 10 is closed. In this state, open the on-off valves 7a, 7b, 7c of the water supply part and drainage part of the electrolyzed water circuit, and apply DC voltage to both the negative and positive electrodes 2, 3 to electrolyze the source water, converting it into alkaline ionized water and acidic ions. Produce water. When cleaning the electrolyzed water circuit including the electrolytic cell, use the valves 7a, 7b, and 7 in the water supply and drainage parts.
Close c. Next, the mounting part 11b of the cleaning tank 11 device is rotated (in the case of screwing), so that the actuator 11c at the tip moves the valve body 10a of the on-off valve 10 to the spring 10b.
When pushed out against the pressure, the on-off valve 10 opens and the cleaning circuit is opened. In this state, pump 1 of tank 11
3, the cleaning liquid in the tank 11 flows from the supply side 8a of the cleaning circuit to the electrolytic cell 1 via the check valve 9.
The liquid that washed the electrolytic cell 1 is introduced into the tank 1 through the opened on-off valve 10 on the recovery side 8b.
It is returned to 1. Cleaning is performed by repeating the circulation of the cleaning liquid for a predetermined period of time in this manner. Although not shown in the drawings, the switch of the pump 13 can also be linked to operate automatically when the tank 1 is moved to the valve open position. Furthermore, the alkaline water on-off valve 7b and the acidic water on-off valve 7b of the electrolyzed water circuit drainage section may be a two-stage interlocking type flow switch valve as filed by the applicant in Japanese Patent Application No. 61-303185. .

[Effects of the invention] As described above, the present invention provides an electrolysis device with a cleaning circuit and a cleaning liquid tank that are separate from the electrolyzed water circuit, and by moving the tank forward and backward, the cleaning circuit can be opened and the cleaning liquid can be circulated. Cleaning of the device is greatly simplified. Therefore, it can be operated even by a person who does not have specialized knowledge or skills in cleaning, so maintenance is easy and it is highly economical.

[Brief explanation of the drawing]

FIG. 1 is a flow sheet of the device of the present invention, and FIG. 2 is an enlarged sectional view of the main part of the present invention. 1... Electrolytic cell, 5... Water supply pipe, 6a, 6b...
Drain pipe, 7a, 7b, 7c...on/off valve, 8...cleaning bypass circuit, 9...check valve, 10...on/off valve, 11...cleaning liquid tank device, 11c...actuator, 12a...cleaning liquid Recovery path, 12b...Washing liquid supply path, 13...Pump.

Claims (1)

[Scope of utility model registration request] A water supply section is provided on one side of the electrolytic cell, which is partitioned into an anode chamber and a cathode chamber by an electrolytic diaphragm between the anode and cathode, and a pair of drainage sections for alkaline water and acidic water are provided on the other side. In a water electrolyzer equipped with an on-off valve in the water supply section and an on-off valve in the drainage section, a cleaning bypass circuit that circulates at least through the electrolytic cell is connected to the electrolyzed water circuit from the water supply section to the on-off valve in the drainage section, and this cleaning A cleaning liquid tank provided with a check valve on the cleaning liquid supply side of the bypass circuit and an on-off valve on the recovery side, and equipped with an operator for opening the on-off valve and a cleaning liquid inlet/output path on the downstream side of the recovery side on-off valve of the cleaning bypass circuit. A water electrolysis device, characterized in that the device is provided so as to be movable toward and away from the valve body of the recovery side on-off valve.