JPH10174973A - Method for washing and sterilizing continuous water passing type electrolytic water making apparatus, electrolytic water-making apparatus equipped with mechanism executing the method and passage changeover valve device used therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently wash and sterilize an electrolytic cell and a peripheral pipeline by suppressing the supply of water from a water supply pipe to the inlet of the electrolytic cell and supplying washing water from the outlet side of a single electrode chamber to allow the same to flow backward and passing this water through other electrode chamber to wash the chamber. SOLUTION: At a time of washing, the first passage changeover means 17 of a water supply pipeline 8 and the second passage changeover means 18 of a drain pipeline 9 are respectively opened toward a washing bypass 16. The water of the water supply pipeline 8 is introduced in the direction reverse to a usual direction from the drain side of an electrolytic chamber 15 through the washing bypass 16 as shown by an arrow to flow through the route from electrode chamber 5 to drain pipeline 10 through water supply branch pipe 14, common drain part 13 of water purifier 12, water supply branch pipe 15 and electrode chamber 6 as shown by an arrow to perform washing and sterilization. Since the water taken in the washing bypass 16 is not passed through the water purifier 12, it contains chlorine or the like. Therefore, respective parts can be washed and sterilized by sterilizing force of the chlorine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning and sterilizing a continuous flow type electrolyzed water generator having a water purifier interposed in a water supply line, and a continuous flow type electrolyzed water generation system provided with a mechanism for performing the method. The present invention relates to a device and a flow path switching valve device used for the device.

[0002]

2. Description of the Related Art A continuous flow type electrolyzed water generating apparatus that electrolyzes water, such as tap water, while adding minerals and the like as necessary, and adjusts it to alkaline ionized water and acidic water, has been used for a long time. After that, it is necessary to wash and sterilize the electrolytic cell and the pipeline. In particular, since deposits such as calcium adhere to the cathode compartment and the electrolytic diaphragm, it is necessary to remove the deposits regularly or irregularly.

[0003]

Conventionally, this type of electrolyzed water generator has been cleaned by supplying water from the water supply pipe to the electrolyzer while the electrolyzing operation is stopped. Had been washed. However, in this method, in an electrolytic water conditioner in which a water purifier is provided in a water supply pipe, the water is cleaned with water from which chlorine has been removed by the water purifier.
A sufficient bactericidal effect could not be obtained.

[0004] As a cleaning method for removing precipitates such as calcium, there is a reverse electric cleaning system dedicated to cleaning in which a normal electrolytic water adjustment operation is stopped and the electrode polarity of the electrolytic cell is reversed.
Alternatively, there is a reverse electrolysis method in which the polarity of an electrode is switched at regular time intervals during a normal alkaline ionized water generation operation. However, the former reverse-electric cleaning system dedicated to cleaning consumes a large amount of water and is uneconomical, and the latter reverse-electrolytic method requires alkaline water to always be obtained from the same tap even if the polarity is reversed. In addition to the need for a flow path switching valve and its interlocking operation function, an expensive electrode (for example, a platinum-plated titanium electrode) that can be used for both anode and cathode and does not elute harmful substances is required. Product costs are higher. What is more problematic is that in all of these methods, only the cathode chamber of the electrolytic cell and its drainage line are cleaned, and the entire downstream water circuit of the water purifier cannot be cleaned and sterilized. It is.

Accordingly, a first object of the present invention is to efficiently clean and sterilize an electrolytic cell and its peripheral pipes with cleaning water such as tap water, more preferably hypochlorous acid water having a strong sterilizing power. Cleaning of continuous water electrolysis water generator
It is to provide a sterilization method.

[0006] A second object of the present invention is to provide a continuous flow-through type electrolyzed water generating apparatus provided with a mechanism for performing the above-mentioned cleaning / sterilizing method.

[0007] A third object of the present invention is to provide a cleaning / cleaning apparatus.
An object of the present invention is to provide a washing-time channel switching valve device used for a sterilization operation.

[0008]

In order to achieve the first object, according to the first aspect of the present invention, water supplied from a water supply pipe is electrolyzed in an electrolytic cell having a cathode chamber and an anode chamber. In a method for washing a continuous water flow type electrolyzed water generator that separately discharges alkaline water and acidic water generated by electrolysis from a pair of drainage pipes, water is supplied from a water supply pipe to an electrolysis tank inlet during cleaning. The cleaning water is supplied from the outlet side of one of the electrode chambers of the electrolytic cell in a suppressed manner, and the supply water in which the one of the electrode chambers flows backward is supplied.
Water is drained from a drain pipe of the other electrode chamber while water is passed to the other electrode chamber directly or through a pipe on the water supply side.

In order to achieve the first object,
The invention according to claim 2 of the present application is directed to a cathode chamber of an electrolytic cell in which a water purifier is interposed in a water supply pipe of an electrolytic cell having a cathode chamber and an anode chamber, and a pair of water supply branch pipes is provided from a common drainage section of the water purifier. And independently supply water to the anode chamber, and in the cleaning method of the continuous water flow type electrolyzed water generating apparatus in which the supplied water is electrolyzed into alkaline water and acidic water and discharged separately from a pair of drain pipes, Water supply from the water supply line to the inlet of the electrolytic cell is suppressed and water is supplied from the outlet side of one of the electrode chambers of the electrolytic cell, and the supply water in which the one of the electrode chambers flows backward passes through the common drainage section of the water purifier. It is characterized in that water is drained from a drain pipe of the other electrode chamber while water is passed to the other electrode chamber of the electrolytic cell through a pair of water supply branch pipes.

Further, in order to achieve the first object, the invention according to claim 3 of the present application relates to a method of connecting a water supply conduit of an electrolytic cell having a cathode chamber and an anode chamber to a pair of independent communicating cells with each electrolytic chamber. And a water supply branch pipe leading to the cathode chamber of the electrolytic cell, or the water supply pipe on the upstream side thereof, or the adsorption water purifier and the filtration water purifier are upstream of the water supply pipe and the cathode chamber side water supply branch pipe. A method for cleaning a continuous flow type electrolyzed water generator in which water supplied to each electrode chamber of an electrolytic cell is electrolyzed to alkaline water and acidic water and discharged from a pair of drain pipes, interposed in a downstream positional relationship. At the time of washing, water supply from the water supply line to the electrolytic cell inlet is suppressed to supply water from the outlet side of one electrode chamber of the electrolytic cell, and the supply water in which the one electrode chamber is flowed backward is filtered by the filtration water purifier. While passing water to the other electrode chamber of the electrolytic cell through the other electrode chamber Characterized by draining from the drain line

In any of the above cases, as described in claim 4, the water passing through the electrolytic cell is electrolyzed by using the electrode of the electrode chamber on the side supplied with water from one drainage line of the electrolytic cell as an anode. Generating hypochlorous acid sterilizing water in the anode electrode chamber, washing and sterilizing the washing water circuit in the process of passing the hypochlorous acid sterilizing water as washing water, and sterilizing the hypochlorous acid. More preferably, the water is neutralized and discharged in the process of passing the water through the cathode electrode chamber.

In order to achieve the second object, the invention according to claim 5 of the present application has a water supply pipe provided with a water purifier on one side of an electrolytic cell partitioned into a cathode chamber and an anode chamber. ,
On the other side, a pair of drainage pipes respectively communicating with the cathode chamber and the anode chamber are provided, and water supplied from a water supply pipe is electrolyzed into alkaline ionized water and acidic water and discharged from the pair of drainage pipes. In the continuous water flow type electrolyzed water generator, a pair of water supply branch pipes are provided to communicate separately from the common drainage section of the water purifier to each electrode chamber of the electrolysis tank, thereby suppressing water supply from the water supply line to the electrolysis tank inlet. In this state, when water is supplied from the outlet side of one electrode chamber of the electrolytic cell, the supplied water flows back through the one electrode chamber, and a pair of water supply pipes passing through a common drainage section of the water purifier. Characterized in that it flows to the other electrode chamber of the electrolytic cell and is drained from a drain pipe of the other electrode chamber.

[0013] In order to achieve the second object, the invention of claim 6 of the present application has a water supply pipe provided with a water purifier provided on one side of an electrolytic cell partitioned into a cathode chamber and an anode chamber. ,
On the other side, a pair of drainage pipes respectively communicating with the cathode chamber and the anode chamber are provided, and water supplied from a water supply pipe is electrolyzed into alkaline ionized water and acidic water and discharged from the pair of drainage pipes. A continuous water flow type electrolyzed water generating apparatus, a pair of water supply branch pipes respectively connected to respective electrode chambers of the electrolytic cell from a common drainage section of the water purifier; branched from a water supply pipe upstream of the water purifier; A washing bypass piped so as to communicate with an outlet side of one of the electrode chambers of the electrolytic cell; and selectively opening and closing water flowing from a water supply pipe to the water supply side of the electrolytic cell and the cleaning bypass side. First flow path switching means for controlling; the cleaning bypass; and second flow path switching means for selectively opening and closing the drain pipe outlet side of the electrode chamber to which the cleaning bypass communicates;
It is characterized by having. In this case, the first flow path switching means may be configured to have some or all of the functions of the second flow path switching means.

Further, in order to achieve the second object,
The invention according to claim 8 of the present application is characterized in that one side of an electrolytic cell partitioned into a cathode chamber and an anode chamber has a water supply pipe provided with a water purifier and communicates with the cathode chamber and the anode chamber separately on the other side. A continuous water supply type electrolyzed water generator that electrolyzes water supplied from a water supply line into alkaline ionized water and acidic water and discharges the water from the pair of drainage lines. A pair of water supply branch pipes respectively connected to the respective electrode chambers of the electrolytic cell from a common drainage section of the water purifier; and a water supply pipe upstream of the water purifier and a drainage pipe of one of the electrolytic tanks. Washing-time flow switching means for switching the flow of water from the water supply line to one drainage line of the electrolytic cell at the time of washing.

Further, in order to achieve the second object, the invention according to claim 9 of the present application is directed to a continuous flow type electrolyzed water generating apparatus, wherein the washing-time flow path switching valve device is provided with There is provided a distribution mechanism for passing a part of the water to the electrolytic tank side of the one drainage line of the electrolytic tank and a part of the water to the discharge port side of the drainage line.

Further, in order to achieve the second object, the invention according to claim 10 of the present application has a water supply pipe on one side of an electrolytic cell partitioned into a cathode chamber and an anode chamber, and has the water supply pipe on the other side. A continuous drainage line having a pair of drainage pipes respectively communicating with the cathode chamber and the anode chamber, and electrolyzing water supplied from a water supply pipe into alkaline ionized water and acidic water and discharging from the pair of drainage pipes; In the electrolyzed water generating apparatus of the type, the water supply pipe is branched into a pair of water supply branch pipes independently communicating with the cathode chamber and the anode chamber of the electrolytic cell, and the water supply branch pipe communicating with the cathode chamber, or the water supply pipe and the cathode chamber side water supply. In addition to the upstream and downstream positions of the adsorption water purifier and the filtration water purifier, the water supply branch between the adsorption water purifier and the filtration water purifier, the water supply branch pipe leading to the anode chamber, and the drain pipe of the anode chamber During cleaning, supply these two water supply pipes on the electrolytic cell side between channels. Characterized in that a communicated allowed and the anode chamber-side water supply branch pipe and communicated to passage change-over valve the drain line of the anode chamber communicating with the water supply conduit separately from the water supply branch pipe of the pipe roadside.

In this case, when the flow path switching valve is switched to the washing side, the entire amount of the raw water flows into the electrolytic cell, so that the water pressure in the washing water supply passage rises in conjunction with the pressure resistance in the filtration water purifier, and the electrode chamber Pressure may increase and damage the diaphragm. In order to prevent this, the invention according to claim 11 is for cleaning between the anode chamber side water supply pipe 15b downstream of the flow path switching valve 46 and the outlet of the filtration water purifier. A one-way bypass cleaning circuit is provided in which a part of the cleaning acidic water is bypassed to a discharge port when a pressure of the acidic water rises to a predetermined pressure or more, bypassing a microfilter in the filter water purifier. I do.

Further, in order to achieve the second object, the invention according to claim 12 of the present application has a water supply pipe on one side of an electrolytic cell partitioned into a cathode chamber and an anode chamber, and has the water supply pipe on the other side. A continuous drainage line having a pair of drainage pipes respectively communicating with the cathode chamber and the anode chamber, and electrolyzing water supplied from a water supply pipe into alkaline ionized water and acidic water and discharging from the pair of drainage pipes; In the electrolyzed water generator of the type, an adsorption water purifier and a filtration water purifier are arranged in a water supply line in an upstream and downstream positional relationship, and a downstream water supply line of the filtration water purifier is branched into a pair of water supply branch pipes to form an electrolytic cell. And a washing pipe is connected from the water supply branch pipe on the side leading to the anode chamber to the water supply side of the filtration water purifier, and the anode chamber side water supply branch pipe and the cleaning pipe are interconnected. A flow path switching mechanism is provided therebetween.

Further, in order to achieve the second object, the invention according to claim 13 of the present application is directed to the apparatus, wherein the drainage pipe is branched from a water supply branch pipe leading to the cathode chamber, and the drainage pipe is connected to the branch pipe. A drain valve is provided between the water supply pipes so as to close the water drainage pipe at the water pressure at the time of water supply of the water supply pipe and open the water drainage pipe at the water pressure when the water supply is stopped.

[0020] The above device of the present invention is more preferably
At the time of cleaning / sterilization, the polarity of the electrode of the electrode chamber on the outlet side of the electrolytic cell, that is, the side where the cleaning water is supplied from the drainage line, is maintained or switched to the anode, thereby enabling cleaning / sterilizing electrolysis in the electrolytic cell. And an electric control device.

In the above-mentioned apparatus of the present invention, a flow restricting mechanism for providing a flow restricting effect to the electrolytic cell is provided in the cleaning bypass and the flow path switching valve for cleaning, and the pH of the electrolytic water during the cleaning / sterilizing electrolysis is adjusted. The concentration may be further lowered or the concentration of hypochlorous acid may be increased.

In order to achieve the third object, the invention of a passage switching valve device according to claim 16 of the present application provides a water supply inlet to which a water supply line is connected and a water supply line to a water purifier. A valve casing having a water supply outlet, a washing water outlet communicating with one drainage pipe of the electrolytic cell, and a drainage outlet connected to a drainage part of the one drainage pipe of the electrolytic cell; A valve body for selectively opening a water passage from the water supply inlet to the water supply outlet and a water passage from the water supply inlet to the washing water outlet and the drainage outlet. When the water passage to the washing water outlet and the drain outlet is opened from the water outlet, a part of the water introduced from the water supply inlet is drained to the drain outlet, and the remaining water is discharged from the washing water outlet. It is characterized by being.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, water supplied from a water supply pipe is electrolyzed in an electrolytic cell having a cathode chamber and an anode chamber, and alkaline water and acid water generated by the electrolysis are supplied from a pair of drain pipes. Washing of continuous water flow type electrolyzed water generator discharged separately
The present invention relates to a sterilizing method and a continuous flow-through type electrolyzed water generating apparatus provided with a structure for performing the method. Suppress water supply and supply wash water such as tap water from a drain pipe of one of the electrode chambers of the electrolytic cell, and wash water that flows back through the one electrode chamber, preferably into electrolyzed hypochlorous acid sterilized water by electrolysis. The water is generated and drained from the drain pipe of the other electrode chamber while water is passed from the one electrode chamber directly to the other electrode chamber via a pipe on the water supply side.

The means for flowing the cleaning water from one electrode chamber through the water supply side pipe of the electrolytic cell to the other electrode chamber is provided with microfluidic washing water flowing back from the water supply branch pipe of one electrode chamber. A method of passing water to the water supply branch of the other electrode chamber through a common drainage section on the outlet side of the filter water purifier such as a filter, and a method of passing washing water that has flowed back from the water supply branch of one electrode chamber through the filter material inside the filter water purifier Then, it is roughly divided into a method of passing water through a water supply branch pipe of the other electrode.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. Continuous flow type electrolyzed water generator 1
Is a pair of electrode chambers 5, 6 between an opposed pair of electrodes 2, 3 (cathode 2 and anode 3 in the illustrated embodiment) by an electrolytic diaphragm 4.
(Cathode chamber 5 and anode chamber 6) having a diaphragm electrolyzer 7, which is connected to a water supply pipe 8 on the water supply side of the electrolyzer 7, and has a cathode chamber 5 and an anode on the drain side of the electrolyzer 7. A pair of drain pipes 9 and 10 communicating with each other (independently) are connected to the chamber 6, and in a normal alkaline ionized water generation operation, raw water such as tap water supplied from the water supply pipe 8, or If necessary, water supplemented with minerals and the like is electrolyzed in the electrolytic cell 7, alkali ion water generated in the cathode chamber 5 is withdrawn from the drain pipe 9, and acidic water generated in the anode chamber 6 is drained with a drain pipe. It is designed to be discarded from the road 10 to the drain 11. The ON-OFF signal of the electrolysis, that is, the application of the voltage to the electrode may be controlled by, for example, a signal from a flow meter 25 or a flow switch interposed in the water supply line 8 or another water passage.

The continuous flow type electrolyzed water generating apparatus 1 of the present invention comprises:
A water purifier 12 filled with activated carbon, a microfilter, or the like is interposed in the water supply line 8 and communicates separately from the common drainage portion 13 on the outlet side of the water purifier 12 to the cathode chamber 5 and the anode chamber 6 of the electrolytic cell 7. A pair of water supply branch pipes 14 and 15 are piped, and the water purified by the water purifier 12 is supplied to the electrolytic tank 7 for electrolysis. In particular, the present invention is useful for an apparatus using a water purifier including a filtering material for removing chlorine, such as activated carbon.

In the method for cleaning and sterilizing the continuous water flow type electrolyzed water generator according to the present invention, water supply from the water supply line 8 of the electrolyzed water generation device 1 to the inlet of the electrolytic cell 7 is suppressed. Water for washing, such as tap water, is supplied from one of the electrode chamber outlets of the electrolytic cell 7, and the supply water flowing back through the electrode chamber is supplied to a pair of water supply branch pipes 1 through a common drainage section 13 of the water purifier 12.
While draining water to the other electrode chamber of the electrolytic cell 7 through 4 and 15, the water is drained from the drain pipe of the other electrode chamber.
Water that does not pass through the water purifier 12, that is, water having a sterilizing power from which chlorine has not been removed is supplied to the common drainage portion 13 of the water purifier 12.
The water supply branch pipes 14, 15 on the downstream side from the, the electrolytic cell 7, and the drainage pipe are passed through to wash and sterilize.

Further, another cleaning and sterilizing method of the above-mentioned electrolyzed water generating apparatus according to the present invention relates to a water supply line 8 of the electrolyzed water generating apparatus 1.
From the water supply line 8 to the inlet of the electrolytic cell 7, water from a water supply line 8 is supplied from the one electrode chamber outlet of the electrolytic cell 7 through the line, and the supply water flowing back through the electrode room is supplied to a water purifier. A washing water circuit is opened for draining water from the drain pipe of the other electrode chamber while passing water to the other electrode chamber of the electrolytic cell 7 through the pair of water supply pipes 14 and 15 via the common drain section 13 of 12. At the same time, hypochlorite disinfection water is generated in the anode electrode chamber by electrolyzing water passing through the electrolytic cell with the electrode of the electrode chamber supplied from the outlet side of the electrolytic cell 7 serving as an anode. In the process of passing the acid sterilizing water through the washing water circuit, the water supply branch pipes 14, 15, the electrolytic tank 7, and the drainage line on the downstream side from the common drainage section 13 of the water purifier 12 are washed and sterilized with hypochlorous acid sterilizing water. ,
In addition, the hypochlorous acid water is neutralized and discharged in the process of passing through the cathode electrode chamber.

The suppression of water supply to the electrolytic cell 7 during washing and sterilization is as follows.
This is to prevent water that has passed through the filtering material of the water purifier 12 from flowing into the electrolytic cell 7. Therefore, the "water supply suppression" referred to here is not limited to the case where the water supply is completely stopped, and may be the case where the water supply pressure to the water purifier 12 is lower than the water pressure from the one water distribution pipe outlet side of the electrolytic cell 7. Including.

Next, an embodiment of a continuous water passing type electrolyzed water generating apparatus provided with a mechanism for performing the above-mentioned washing / sterilizing method will be described. 1a to 3b show an embodiment of a continuous flow type electrolyzed water generator according to the present invention. In this electrolyzed water generator 1, a washing bypass 16 is branched from a water supply line 8 upstream of a water purifier 12. The washing bypass 16 is connected to the outlet of the cathode chamber 5 or the anode chamber 6 of the electrolytic cell 7. In the embodiment of FIGS. 1a and 1b,
The cleaning bypass 16 is connected to the drainage pipe 9 of the cathode chamber 5 and communicates with the cathode chamber 5 through a part of the drainage pipe 9 (on the upstream side of the connection portion).

Water from the water supply line 8 is selectively supplied to the water supply line 8 and the washing bypass 16 so that one is open and the other is closed to the water supply line 8 and the washing bypass 16. A first channel switching means 17 for controlling the opening and closing so that water is passed through the first channel is provided. In the embodiment shown in the figure, a three-way valve provided at the branch point of the washing bypass 16 is exemplified as the flow path switching means 17, but the present invention is not limited to this, and the downstream side of the water supply line 8 downstream of the branch point is located downstream of the bypass branch point. A pair of on-off valve devices may be provided in the cleaning bypass 16 and the cleaning bypass 16 to alternately open and close alternately. Alternatively, water flow to the electrolytic cell 7 and the cleaning bypass 16 may be selectively switched. Any other configuration may be used as long as it has a flow path switching function.

On the other hand, the washing bypass 16 and the drain pipe 9 are provided with a second flow path switching for selectively opening and closing a water supply circuit from the washing bypass 16 to the electrode chamber 5 and a drain circuit from the drain pipe 9. Means 18 are provided.

The second flow path switching means 18 in the embodiment shown in FIGS. 1A to 3B is constituted by a check valve provided at the connection between the washing bypass 16 and the drainage line 9, and is usually provided with a spring 20b. The cleaning bypass 16 is provided by the biased valve element 20a.
The valve seat on the side is closed and the drainage channel of the drainage line 9 is opened.
By pressing Oa against the valve seat on the downstream side of the drainage pipe 9 against the spring 20b, the cleaning bypass 16 is opened and drainage from the drainage pipe 9 is prevented.

However, the second flow path switching means 18 is not limited to the above-described check valve, but may be a cleaning bypass 16 and a pair of, preferably, an electric open / close valve provided downstream of the drain pipe 9 at the bypass connection portion. (Not shown). In short, the second flow path switching means can selectively supply water from the cleaning bypass 16 to the one electrode chamber 5 of the electrolytic cell 7 and drain water from the drain pipe 9 of the electrolytic cell 7. Therefore, the same object can be achieved by a combination of another structure, for example, an on-off valve provided only on the downstream side of the bypass connection portion of the drainage pipe 9 and the first flow path switching means, Further, when the drain pipe outlet end to which the bypass 16 is connected is provided at a high position, the first flow path switching means can also serve as the second flow path switching means.

With the above configuration, the electrolyzed water generating apparatus 1 of the embodiment shown in FIGS. 1A and 1B opens the first flow switching means 17 of the water supply line 8 to the cleaning bypass 16 side during cleaning, and The second bypass switching means 18 on the 9 side is connected to the cleaning bypass 16.
When opened to the side, the water in the water supply pipe line 8 is introduced from the drain side of one electrode chamber 5 of the electrolytic cell 7 through the washing bypass 16 as shown by the arrow, and the electrode chamber 5 → the water supply branch pipe 14 → the water purifier 12 The water flows along a washing / sterilizing water circuit (hereinafter referred to as a washing water circuit) via the common drainage section 13 → the water supply branch 15 → the other electrode chamber 6 → the other drainage line 10. The water flowing through the cleaning / sterilizing water circuit is water supplied from the downstream water supply line 8 of the water purifier 12 through the cleaning bypass 16, that is, the water purifier 12.
Is water from which chlorine and the like have not been removed, so that the common drainage section 1 of the electrode chamber 5, the water supply branch pipe 14, and the water purifier 12 is used.
3. The water supply branch pipe 15 and the other electrode chamber 6 are cleaned and sterilized by water having a sterilizing power of chlorine.

FIGS. 2A to 3B show another embodiment of the present invention. In this electrolyzed water generator 1, water from a washing bypass 16 is further supplied to the electrolyzed water generator 1 of FIG. An electric control device 19 is additionally provided to enable the polarity of the electrode in the electrode chamber on the other side to be maintained or switched to the anode to enable the electrolysis for cleaning and sterilization. In addition, each code | symbol shows the same member as FIG.

First, in the apparatus shown in FIGS. 2A and 2B, as shown in FIG. 2B, the water supply line is passed through the washing bypass 16 by the first passage switching means 17 and the second passage switching means 18. In a state where the electrode chamber 5 is in communication with one electrode chamber 5 of the electrolytic cell 7, the polarity of the electrode of the electrode chamber 5 on the side to which water from the cleaning bypass 16 is supplied is maintained or switched to the anode, and electrolysis is performed. 5 is designed to generate hypochlorous acid water.

That is, the electric control device 19 is configured as shown in FIG.
a, when water from the cleaning bypass 16 is introduced from the outlet side of the cathode chamber 5 as shown in FIG.
As described above, the electrode 2 of the cathode chamber 5 is converted to the anode during the electrolysis for washing and sterilization, and conversely, the water from the washing bypass 16 is supplied to the anode chamber 6.
When the air is introduced from the outlet side (not shown), the electric circuit is configured to hold the electrode of the anode chamber 6 on the anode. The anode holding or the anode conversion of the electrode 2 may be operated by a switch or the like interlocked with the passage of water through the washing bypass 16, or may be operated by another switch before or after the passage of water through the washing bypass 16. It may be.

Thus, during normal electrolytic water generation, FIG.
As described above, water is supplied from the water supply line 8 to the water supply side of the electrolytic cell 7, electrolyzed into alkaline water and acidic water in the electrolytic cell 7, and discharged separately from the pair of drainage lines 9 and 10.

On the other hand, at the time of washing, as shown in FIG. 2B, the first passage switching means 17 of the water supply line 8 is opened to the washing bypass 16 side, and the second passage switching means 18 of the drainage line 9 is opened to the washing bypass. When opened to the side 16, the water in the water supply pipe 8 is introduced from the drain side of one electrode chamber 5 of the electrolytic cell 7 through the washing bypass 16 as shown by the arrow, and the electrode chamber 5 → the water supply branch pipe 15 → the water purifier 12.
Of the common drainage part 13 → water supply branch pipe 14 → the other electrode chamber 6 → a water circuit for cleaning / sterilization via the other drain pipe 10 (hereinafter referred to as “wash water circuit”), and water from the wash bypass 16 The electrode polarity of the electrode chamber 5 to be supplied with water is switched to the anode, and an electrolytic voltage is applied.

Therefore, the water supplied from the cleaning bypass 16 to the electrode chamber 5 is electrolytically adjusted in the electrode chamber 5 switched to the anode chamber. Since the water prepared here is acidic water, it dissolves deposits such as calcium adhering to the electrode chamber 5 and the electrolytic diaphragm 4, cleans the water, and cleans the water by the action of chlorine ions contained in the water. It becomes sterile water containing much chlorous acid, and the electrode chamber 5 is sterilized. In particular, the water electrolyzed at the time of cleaning and sterilization is water supplied from the upstream side of the water purifier 12, that is, water from which chlorine has not been removed. Hypochlorous acid is generated more than when electrolyzed water passed through.

The hypochlorous acid sterilized water discharged from the water supply side of the electrode chamber 5 is supplied to the water supply branch 14 and the common drainage portion 13 of the water purifier 12.
In the process of passing through the water supply branch pipe 15, it is washed and sterilized, neutralized by electrolysis in the electrode chamber 6 switched to the cathode chamber, and discharged from the drain pipe 10.

Thus, the electrode chamber of the electrolytic cell 7, which was the cathode chamber at the time of normal electrolyzing, is washed with acidic water,
The hypochlorite disinfection water generated here sterilizes the inside of the electrolytic cell and the pipeline around it.

In order to increase the concentration of hypochlorous acid in the electrolytic cell 7 at the time of washing, the washing bypass 16 is provided with a means for suppressing the amount of water supply such as a throttle valve 20 so that the amount of water supply is reduced and electrolysis is performed slowly. You may. Cleaning bypass 16 for the same purpose
May be made thinner than the water supply pipe, and furthermore, the electrolysis current at the time of washing / sterilizing electrolysis may be larger than at the time of normal alkali ion water generation electrolysis.

Raw water such as tap water contains chlorine ions for generating hypochlorous acid at the time of washing / sterilization electrolysis. Means for adding a chloride salt such as sodium chloride may be provided.

When a mineral supply cylinder 22 for supplying calcium or the like to the water supply branch pipe 14 communicating with the cathode chamber 5 is provided, the mineral is always supplied to the cathode chamber side even if the polarity of the electrode is reversed. The water supply branch pipes 14 and 15 are provided with a flow path switching device 23. Although illustration is omitted,
The water supply branch pipe 15 communicating with the anode chamber 6 may also be provided with a chemical solution addition cylinder for adding a necessary chemical solution to the anode chamber 6.

Next, the embodiment of FIGS. 3A and 3B shows that the electrodes 2 and 3 of the electrolytic cell 7 can be used for both cathode and anode.
For example, a case is shown in which an electrode obtained by plating a white metal such as platinum or iridium on a titanium material is used, and the polarity of the electrode is changed every predetermined time to perform normal electrolysis. In this type of device, a flow path switching device 21 is provided in the drainage pipes 9 and 10 so that the alkaline ionized water is always discharged from the same intake port even if the polarity is reversed.

In the embodiment of FIGS. 3a and 3b, the water supplied from the cleaning bypass 16 to the electrode chamber 5 of the electrolytic cell 7 via the drain pipe 9 as shown in FIG. Flows into the water supply branch pipe 15 via the flow path switching device 23, and a washing water circuit is formed in which water is supplied from the water supply branch pipe 14 to the electrode chamber 6 through the flow path switching device 23 and drained from the drain pipe 10; The electrode 2 in the electrode chamber 5 is converted to an anode so that cleaning electrolysis is performed.

In the embodiments of FIGS. 1a and 2a, the washing bypass 16 is connected to the drain line 9 of the cathode chamber 5, but is connected to the drain line 10 of the anode chamber 6 as shown in FIG. 3a. You may. In this case, the hypochlorous acid sterilized water generated in the anode chamber 6 while maintaining the polarity of FIG.
Although water may be passed through the cathode chamber 5 through 15 and drained from the drain pipe 9, it is preferable that hypochlorite sterilizing water for washing / sterilizing is generated in the cathode chamber 5 during normal electrolysis. To achieve this, as shown in FIG.
The washing water circuit is switched so that the water supplied from the electrode chamber 5 is switched to the electrode chamber 5 through the flow path switching device 21 and the water drained from the electrode chamber 6 is drained from the drain pipe 9 through the flow path switching device 21. It is desirable to form and convert the electrode 2 of the electrode chamber 5 to an anode so that cleaning electrolysis is performed. When the washing bypass 16 is connected to the drainage pipe 10, there is an advantage that up to the end of the alkaline water drainage pipe 9 is washed and sterilized with hypochlorous acid sterilizing water at the time of washing electrolysis.

In each of the embodiments shown in the drawings, the washing bypass 16 is connected to the outlet side of the electrode chamber 5 or 6 of the electrolytic cell 7 through the drainage line 9 or 10, but the electrode chamber 5 or 6 may be directly connected to the outlet side.

FIGS. 4A to 5B show another embodiment of the continuous water flow type electrolyzed water generating apparatus according to the present invention.
The embodiments of FIGS. 4a to 5b provide a washing bypass 16 for supplying water from the water supply line 8 upstream of the water purifier 12 to one outlet of the electrolytic cell 7 in the embodiment of FIGS. 1 is one of the drainage pipes 9 or 1 of the electrolytic cell 7
0, a washing flow path switching valve device 26 is provided in connection with the water supply pipe line 8 and the drainage pipe line 9 or 10, and the washing flow path valve device 26 is switched to switch the water supply pipe line 8 from the electrolytic cell 7. Water is supplied to the outlet side of one of the electrode chambers.

That is, in the embodiment of FIGS. 4A and 4B, the washing-time flow path switching valve device 26 is provided in association with the alkaline water drainage pipe 9 of the electrolytic cell 7 and the upstream water supply pipe 8 of the water purifier 12. ing. In this configuration, during normal electrolysis, as shown in FIG. 4A, water from the water supply line 8 is supplied to the water purifier 12, the water supply branch 14,
The water is supplied to the electrolytic cell 7 via an electrolyzer 15 and is electrolyzed to alkaline water and acidic water. The alkaline water is discharged through an alkaline water drain pipe 9 and the acidic water is discharged from an acidic water drain pipe 10 to a drain 11. You. On the other hand, when cleaning and sterilizing,
When the flow path of the flow path switching valve device 26 at the time of washing is switched to the alkaline water drain pipe 9, the water from the water supply pipe 8 flows back through the alkaline water drain pipe 9, and flows out of the outlet of the electrolytic cell 7 on the electrode chamber 5 side. Water is supplied to the water purifier 1 by flowing backward through the water supply branch pipe 14 from the electrode chamber 5.
2, a washing water circuit is opened which is introduced from the common drainage section 13 of the water purifier 12 through the water supply branch pipe 15 to the electrode chamber 6 of the electrolytic cell 7 and drained from the acidic water drainage pipe 10 to the drain 11. You. Thus, by the water from the water supply line 8 bypassing the water purifier 12 and passing through the washing water circuit,
The circuit is cleaned and sterilized by chlorine-containing water.

5a and FIG. 5b, on the contrary, the washing-time flow switching valve is associated with the acidic water drainage line 10 of the electrolytic cell 7 and the upstream water supply line 8 of the water purifier 12. Device 2
6 are provided. In this configuration, at the time of cleaning / sterilization, the state of FIG. 5A is changed from the state of FIG.
6 is switched to the acidic water drainage pipe 10, water from the water supply pipe 8 flows back through the acidic water drainage pipe 10 and
Is supplied from the outlet on the side of the electrode chamber 6, flows backward from the electrode chamber 6 through the water supply branch 15 to the water purifier 12, and from the common drainage portion 13 of the water purifier 12 through the water supply branch 14 to the electrode chamber of the electrolytic cell 7. The washing water circuit which is introduced into the drain water pipe 5 and drained from the alkaline water drain pipe 9 to the drain tap is opened. Thus, when the water from the water supply line 8 passes through the washing water circuit, the circuit is washed and sterilized by the chlorine-containing water.

FIGS. 6 and 7 show still another embodiment of the electrolyzed water generating apparatus according to the present invention, which comprises a water supply line 8 on the upstream side of a water purifier 12 and a drainage line of the electrolytic cell 7. The washing-time flow path switching valve device 26 provided in connection with the passage 9 or 10 is a part of the water supplied to the drain passage 9 or 10 (the alkaline water drain passage 9 in FIGS. 6 and 7). And a distribution mechanism 44 for passing the remaining water to the water discharge port side of the drainage pipe 9 or 10 while passing the water to the electrolytic tank 7 side of the drainage pipe 9 or 10. As shown in FIG. 6, the distribution mechanism 44 is preferably provided with a throttle part 45 in the water passage toward the drainage pipe discharge port side, whereby the water flow to the electrolytic cell 7 is ensured, and The above water is prevented from being drained from the spout.

That is, the tap water contains chlorine and has sterilizing power itself. However, all the washing water such as tap water supplied to the drain pipe 9 or 10 is passed to the electrolytic cell 7 side. If this is done, of the drainage pipes, the drainage pipe downstream of the flow path switching valve device 26 at the time of washing will not be washed and sterilized at all, whereas, as shown in FIGS. By allowing the section to flow to the drainage pipe downstream of the flow path switching valve device 26 at the time of washing, the water up to the water discharge port of the drainage pipe is washed and sterilized with washing water such as tap water.

The washing-time channel switching valve device 26 includes
Although a switching valve is used in FIG. 6 and a branch faucet is used in FIG. 7, the water supply / distribution mechanism 44 for cleaning water can be applied to any of them.

In the apparatus of FIGS. 4a to 7, the same reference symbols as those in the apparatus of FIGS. 1a to 3b denote members having the same functions. For example, when hypochlorous acid is generated in water in the cleaning water circuit and sterilized, the electrolytic cell 7 is used during cleaning and sterilization.
The same electric control device 19 as described above is provided so that the electrode in the electrode chamber on the side supplied with water from the outlet side is held or switched to the anode to perform electrolysis for cleaning and sterilization.

As shown in FIGS. 5A and 5B, a pair of drainage pipes 9 and 10 may be provided with a flow path switching device 21, and the water supply branch pipes 14 and 15 may be provided with a flow path switching device 23. The functions of these flow path switching devices 21 and 23 are the same as those in FIGS.

Further, in the case of the device provided with the electric control device 19, the washing flow path is set in order to increase the hypochlorous acid concentration in the electrolytic cell 7 during washing by limiting the amount of water supplied to the washing water circuit. In the switching valve device 26, it is preferable to provide an orifice, a flow restrictor, and a flow restrictor mechanism 27 for providing a flow restricting effect in a water passage connecting the water supply conduit 8 to the one drain conduit of the electrolytic cell 7.

The switching operation of the first flow path switching means 17 and the second flow path switching means 18 in FIGS. 1A to 3B, FIG.
The switching operation of the flow path switching valve device 26 during cleaning and the operation of cleaning electrolysis in FIGS. For example, cleaning and sterilization by the above-mentioned cleaning electrolysis may be performed manually or by automatic means such as a timer at night or the like when normal electrolysis water preparation is not performed, or a normal electrolysis water preparation time is integrated and set. Cleaning electrolysis may be automatically performed when the integrated value is reached, or a warning of cleaning electrolysis may be issued.

In the embodiments shown in FIGS. 2A to 7, the polarity of the electrode may be switched only during cleaning and sterilization. Therefore, a relatively inexpensive electrode material such as stainless steel can be generally used for the cathode of electrolysis. When washing and disinfection electrolysis is performed by switching to the anode, the generation of hypochlorous acid is small, so if you want to increase the generation of hypochlorous acid during washing and disinfection electrolysis, use an electrode that becomes the anode during washing and disinfection electrolysis. It is desirable to use a material in which a titanium material is plated with white metal, for example, a material in which a titanium material is coated with platinum and iridium.

Cleaning / Sterilization Washing / sterilization by electrolysis is performed for a predetermined time set in advance, and a warning is given by an indicator lamp or the like during the washing / sterilization.

Further, after sterilization and bacteriostatic treatment by washing and electrolysis are performed, water is passed through for a predetermined period of time before use as normal electrolysis to drain hypochlorite sterilized water, and a warning is issued during this time. Alternatively, the drain passage may be switched to the drain side to prevent water from being discharged from the alkaline water intake port.

The above description is an example of the embodiment of the present invention, and the present invention is not limited to this. For example, a microfilter or a hypochlorous acid generator may be interposed in a pipe to which water is supplied at the time of cleaning / sterilization. Further, the water purifier 12 is not limited to one having a built-in filter or microfilter, and the water purifier 12 and the filter or microfilter may be provided separately.

FIGS. 8A to 8D show a preferred embodiment of the cleaning flow path switching valve device 26 used in the apparatus of FIGS. 6 and 7. The cleaning flow path switching valve device 26 is a hollow tubular valve. A water supply outlet 29 to the water purifier 12 is formed on one side of the casing 28, and a drainage outlet 30 communicating with one drainage line drainage part of the electrolytic cell 7 is formed on the other side. 28 water supply outlet 29
A water supply inlet 31 is provided between the water supply outlet 31 and the drainage outlet 30. Further, between the drain outlet 30 and the feed water inlet 31 of the valve casing 28, a washing water outlet 32 connected to one drain pipe of the electrolytic cell 7 is provided.

A valve seat 33 is provided between the water supply inlet 31 and the water supply outlet 29 in the hollow internal water passage of the valve casing 28, and another valve seat is provided between the water supply inlet 31 and the washing water outlet 32. A valve seat 34 is provided.

A valve body 35 is disposed between the valve seats 33 and 34. The valve body 35 is provided with an operation rod 3 inserted from the outside of the valve casing 28 in a liquid-tight and slidable manner in the axial direction.
6 fixed. The operating rod 36 is connected to a driving device 37 such as a motor at a distal end protruding outside the valve casing 28 and is reciprocated. The reciprocating stroke of the operating rod 36 causes the valve seat 33 to move.
And the valve seat 34 are selectively opened and closed.

The valve body 35 has a tip end on which a part of water introduced from the water supply inlet 31 is transferred to the drain outlet 30 when a water passage from the water supply inlet 31 to the washing water outlet 32 and the drain outlet 30 is opened. A flow restrictor 38 for draining water and draining the remaining water from the washing water outlet 32 is integrally provided.

The flow restricting portion 38 shown in FIGS. 8A to 8D is a cylindrical member having a front end opening formed with a closing member 39 formed on the outer periphery of the front portion, the closing member 39 being in contact with the inner wall surface of the valve casing 28 and closing the water passage to the drain outlet 30. A notch plate 41 for forming a water passage to the washing water outlet 32 is formed on the outer periphery of the rear portion of the cylindrical body 40, and the cylindrical body 40 penetrates from the rear of the notch plate 41 into the hollow interior. A water passage 42 communicating with the drain outlet 30 through the inside of the hole is formed. A check valve 43 made of a flexible material is provided behind the drain outlet 30 of the valve casing 28 to allow drainage to the drain outlet 30 side and to regulate backflow of water from the drain outlet 30 side. I have.

Thus, as shown in FIG. 6A, during normal electrolysis for producing alkaline water, the water introduced from the water supply inlet 31 is supplied to the water purifier from the water supply outlet 29. On the other hand, when the valve 35 moves to the state shown in FIG. 6C during cleaning and sterilization, part of the water introduced from the water supply inlet 31
2, and the remainder is discharged from the washing water outlet 32 through the cutout plate 41 of the throttle member 38. Therefore, the flow rate of water supplied from the cleaning water outlet 32 to one of the electrode chambers of the electrolytic cell 7 during cleaning and sterilization is reduced by the throttle member 38.

FIGS. 9a and 9b show still another embodiment of the present invention.
The water supply pipe 8 branches into a pair of water supply branch pipes 14 and 15 that independently communicate with the cathode chamber 5 and the anode chamber 6 of the electrolytic cell 7, and the water supply branch pipe 14 that communicates with the cathode chamber 5 has an adsorption water purifier 12 such as an activated carbon.
a, and a filtration water purifier 12b such as a microfilter is provided downstream thereof. Although illustration is omitted, as the above-mentioned modified example, the adsorption water purifier 12 is
a may be provided, and the cathode water supply branch pipe 14 may be provided with the filtration water purifier 12b. In such an electrolyzed water generating apparatus, a pipe line between the adsorption water purifier 12a and the filtration water purifier 12b, the water supply branch pipe 15 on the anode chamber 6 side, and the anode chamber 6
During the washing, these two water supply pipes 14b and 15b on the electrolytic tank 7 side are separated from the water supply pipes 14a and 15a on the water supply pipe 8 side and communicate with each other between the drainage pipes 10 and
A flow path switching valve 46 is provided to connect the anode chamber side water supply branch pipe 15a communicating with the water supply pipe 8 to the anode chamber side drain pipe 10.

With the above configuration, during normal electrolytic water generation operation, as shown in FIG. 9A, raw water supplied from the water supply branch pipe 14 of the water supply pipe 8 is supplied to the adsorption water purifier 12a and the flow path switching valve 46.
Flow path during normal electrolysis, filtration water purifier 12b, chemical solution addition cylinder 22
The raw water supplied from the water supply branch pipe 15 is supplied to the anode chamber 6 of the electrolytic cell 7 through the normal electrolytic flow path of the flow path switching valve 46 while the water is supplied to the cathode chamber 5 of the electrolytic cell 7 through the flow passage.
Thus, alkaline water is generated in the cathode chamber 5 by application of the electrolytic voltage and discharged from the drain pipe 9, and acidic water is generated in the anode chamber 6. It is discharged to the drain 11 through the flow path during electrolysis.

At the time of washing, as shown in FIG. 9B, when the flow path switching valve 46 is switched to the washing circuit side, the water supply pipe 14b connected to the cathode chamber 5 of the electrolytic cell 7 and the anode chamber 6 are connected. The supplied water supply line 15b is separated from the water supply branch pipes 14a and 15a on the water supply line 8 side via the switching passage of the flow path switching valve 46, and communicates with each other. On the other hand, water supply line 8
The water supply branch pipe 15a on the side and the drainage pipe 10 on the anode chamber 6 side communicate with each other via the switching passage of the flow path switching valve 46.

Thus, when the flow path switching valve 46 is switched to the above-mentioned cleaning circuit side, the water supply pipe 8 supplies the water supply branch pipe 15a → the flow path switching valve 46 → the drain pipe 10 → the anode chamber 6 → the water supply branch pipe 15b.
→ flow path switching valve 46 → water supply branch 14b → filtration water purifier 12b
→ A washing circuit to the cathode chamber 5 → a drain pipe 9 is opened and closed, and water (wash water) is supplied from the water supply pipe 8 to the washing circuit, so that the entire washing circuit including the electrolytic cell 7 and the filtration water purifier 12 b is completed. Washed.

At the time of this washing, when an electrolytic voltage is applied to the electrodes 2 and 3 of the electrolytic cell 7 (by adding a chloride salt such as sodium chloride to the washing water if necessary), Acid water is generated, and the anode chamber 6 of the cleaning circuit and the downstream cleaning circuit are cleaned and sterilized with hypochlorous acid water.

In particular, in the case of producing and disinfecting hypochlorous acid water, it is advantageous to reduce the flow rate of the washing water and to generate a sufficient concentration of hypochlorous acid water in the anode chamber 6. For this reason, in the embodiment of FIG. 9B, the throttle valve 24 is provided in the flow path that connects the water supply branch pipe 15a of the flow path switching valve 46 and the drainage pipe 10. Further, as shown in FIG. 9B, a part of the flow rate of the supplied water at the time of washing may be used as washing water, and a part may be drained to the drain. In this case, a throttle valve 48 is provided in the drain 47 to the drain.

FIG. 9C shows a further improvement of the apparatus shown in FIGS. 9A and 9B.
When the water pressure in the anode chamber side water supply line 15b rises to a predetermined pressure or more during washing between the water supply line 15b connected to the anode chamber 6 and the outlet 63 of the filter water purifier 12b, the water supply is performed. A one-way bypass cleaning circuit 65 is provided in which a part of the electrolytic acid water for cleaning flowing through the pipe 15b is bypassed to the discharge port 63 by bypassing the microfilter 64 of the filter water purifier 12b.

The water supply line 15b serves as a water supply line to the filtration water purifier 12b when the flow path switching valve 46 is switched to the washing circuit as shown in FIGS. 9b and 9c. When 46 is switched to the washing circuit, the supply of raw water to the cathode chamber 5 is stopped, and all or most of the raw water supply flows back through the anode chamber 6 of the electrolytic cell 3 to the water supply line 15b, and the water supply line 1
The water pressure of 5b rises. On the other hand, the filter water purifier 12 is configured so that a part of the raw water flows in during the normal alkaline water generation electrolysis and the other part is supplied to the anode chamber 6, so that the cleaning water of the drainage pipe 10 whose water pressure has increased during the cleaning. The whole quantity is filtration water purifier 12
When flowing into b, the water pressure in the anode chamber 6 increases due to the resistance of the microfilter 64, and the diaphragm 4 may be damaged. Especially,
This tendency is enhanced when the microfilter 64 is clogged. The bypass cleaning circuit 65 is a pressure release circuit for preventing this. When the cleaning circuit is opened and the water pressure of the electrolytic cell 7 and the water supply line 15b thereabove increases, a part of the cleaning water is bypassed. Check valve 6 urged by a spring 66
7 is opened to flow to the filtration water purifier 12b, and to the discharge port 63 bypassing the microfilter 64 of the water purifier 12b. Therefore, no excessive water pressure is applied to the diaphragm 4 of the electrolytic cell 7, and the discharge side of the filtration water purifier 12b and the downstream water circuit thereof are washed with the entire amount of washing acid water (hypochlorous acid water). You.

10a and 10b show an example of the flow path switching valve 46. FIG. 10a shows the water circuit at the time of the normal electrolysis of the flow path switching valve 46, and FIG. 10b shows the water circuit at the time of washing. Is shown. In this embodiment, the functions of the throttle valves 24 and 48 are performed by the positional relationship between the valve body 50 and the respective openings of the valve casing 49 to the water supply branch pipe 15a and the drainage pipe 10.

FIGS. 11a and 11b show still another embodiment of the present invention. In this continuous flow type electrolyzed water generator, an adsorption water purifier 12a and a filtration water purifier 12b are arranged upstream and downstream of a water supply line 8. And the downstream water supply line 8 of the filtration water purifier 12b is branched into a water supply branch 14 to the cathode chamber 5 and a water supply branch 15 to the anode chamber, and the respective electrode chambers 5, 6 to the electrolytic cell 7 are separated.
And a washing pipe 51 is connected from the water supply branch pipe 15 leading to the anode chamber 6 to the water supply side of the filter water purifier 12b, so that the water supply branch pipe 15 between the anode chamber side and the washing pipe 51 is connected to each other. A channel switching mechanism 52, such as a three-way valve, for selectively opening and closing the water supply branch pipe 15 and the washing pipeline 51 is provided.

In this apparatus, the flow path switching mechanism 52 is connected to the water supply branch 1
Opening to the side 5 forms a normal water circuit for generating electrolyzed water as shown in FIG.
11b, the water supply branch pipe 15 leading to the anode chamber 6 and the water supply branch pipe 14 on the cathode chamber 5 side are connected to the washing pipe 5 as shown in FIG. 11b.
1 through the filter water purifier 12a, and the washing circuit from the drain line 10 to the anode chamber 6 → the washing line 51 → the filter water purifier 12b → the water supply line 8 → the water supply branch 14 → the cathode room 5 → the drain line 9 Is formed. Thus, washing is performed by passing washing water through the washing circuit in the above-described direction. At this time, when an electrolytic voltage is applied, hypochlorous acid disinfecting water is generated in the anode chamber 6, and washing and cleaning of the washing circuit are performed. Sterilization is performed.

As shown in FIGS. 9a and 9b,
A drain pipe 53 is branched from the water supply branch pipe 14b leading to the cathode chamber 5, and a drain pipe 53 is provided between the drain pipe 53 and the water pipe 8 by the water pressure at the time of water supply of the water pipe 8. Is closed, and a drain valve 54 for opening the drain pipe 53 with the water pressure at the time of stopping the water supply is provided. When the on-off valve 55 of the water feed pipe 8 is opened to supply water, the drain valve 54 is closed and the water supply is stopped. The drain valve is opened so that residual water in the device is drained. This draining mechanism stops the water supply,
It is used when reverse polarity cleaning is performed while changing the polarity of the electrode chambers 5 and 6 while draining water from the electrolytic cell. Although not shown in the figure, such a drainage mechanism is used in the present invention. Can be provided in the same manner.

FIGS. 12A and 12B show the drain valve 5.
4, the inside of the valve casing 56 is partitioned into a chamber 58 on the water supply line 8 side and a chamber 59 on the water drain line 53 by a diaphragm 57, and is preferably connected to the chamber 59 on the water drain line side, preferably to a valve seat. A valve seat 60 having a hole 60 'is formed, a valve body 61 for opening and closing the valve seat hole 60' is attached to the diaphragm 57, and the diaphragm 57 is urged by the spring 62 to the water supply pipe side chamber 58. I have.

With the above configuration, when water is supplied to the water supply pipe 8, the water pressure of the chamber 58 rises and the diaphragm 5
The valve body 7 and the valve body 61 are pushed toward the chamber 59, and the valve body 61 closes the valve seat hole 60 ′ of the drainage pipe 53. Therefore, during normal electrolysis operation, water is supplied to the electrolysis tank 7 with the drain pipe 53 closed, and electrolyzed water is generated. On the other hand, when the water supply to the water supply line 8 is stopped, the pressure of the chamber 58 is reduced as shown in FIG. 12B, and the diaphragm 57 is pushed back toward the chamber 58 by the restoring force of the spring 62, whereby the valve body 61 is moved. Open the valve seat hole 60 '. Thus, the drainage pipe 53 is opened, and the water in the electrolyzed water generator is drained. In the embodiment shown in the drawings, the valve seat hole 60 ′ has a predetermined length L, so that a predetermined period from when the water supply from the water supply line 8 is stopped to when the water drainage line 53 is opened. I can take it. With this configuration, when performing reverse voltage cleaning while draining water from the electrolytic cell, the time during which water remains in the electrolytic cell 7 can be increased, and sufficient reverse voltage cleaning time can be obtained.

Although illustration is omitted, FIGS.
In the case where the electrolyzed water generating apparatus of the embodiment b is a reverse electrolysis type electrolyzed water generating apparatus that generates electrolyzed water by changing the polarity of an electrode every predetermined time, a drainage pipe is used at the time of cleaning, as in FIG. An electric control device 19 is provided for switching the electrode chamber on the side where cleaning water is supplied from the road to the anode side.

[0086]

According to the present invention, water bypassing the adsorption water purifier, that is, water from which chlorine has not been removed, is introduced from one of the electrode chambers of the electrolytic cell, and one of the water supply branch pipes—the common drainage portion or the inside of the water purifier— Since the water is passed and discharged in the order of the other water supply branch pipe and the other electrode chamber, the entire downstream water circuit of the water purifier can be washed and sterilized with water containing chlorine.

Further, at the time of electrolytic cleaning, water supplied from the outlet side of one electrode chamber of the electrolytic cell is electrolyzed using the electrode of the electrode chamber as an anode, so that acidic water is generated in the electrode chamber. Deposits such as calcium adhering to the electrodes and the electrolyte membrane in the electrode chamber are washed. Further, the electrolyzed water generated in the anode chamber at this time is sterilized water containing a large amount of hypochlorous acid having a strong sterilizing power, and this water is drained through a surrounding water passage such as a water supply pipe and the other electrode chamber. By doing so, the electrolytic tank and its surrounding pipes (wash water circuit), especially the water supply branch pipe which is easy to come into contact with the outside air at the time of mineral replenishment and the chlorine is removed by the water purifier so that various germs are easily propagated, Sterilized and sterilized with chlorite sterilized water. Therefore, the cleaning / sterilizing effect is remarkably improved as compared with the conventional apparatus, and the cleaning and the sterilizing / bacteriostatic are simultaneously performed by a series of actions.

When the acidic water generated in the anode compartment during the washing / sterilization electrolysis is introduced into the cathode compartment, the water in the cathode compartment is neutralized and becomes almost neutral. Therefore, as before,
In simple backwashing, even if one of the electrode chambers becomes acidic, the water in the other electrode chamber is alkaline, so that the acidic water on the diaphragm surface is neutralized and the dissolving power of calcium and the like is reduced. However, in the present invention, since alkaline water is neutralized, this problem can be solved rationally.

On the other hand, when viewed from the opposite side, the hypochlorous acid water generated in the anode chamber is neutralized and drained in the process of passing through the cathode chamber, so that it is harmless and does not corrode metal appliances around the drain.

The conventional so-called reverse electrolysis requires expensive electrodes such as titanium platinum plating electrodes for both cathode and anode, and also requires a flow path switching valve for supply / drainage pipes. It is possible to carry out washing electrolysis with an inexpensive electrode during normal electrolysis in which the cathode is made of stainless steel and the anode is made of ferrite or the like, and the cost can be reduced.

By providing the distribution mechanism in the flow path switching valve device at the time of cleaning, the drainage pipe for supplying the cleaning water can be cleaned with tap water containing chlorine up to its discharge port.

By providing a bypass washing water circuit that does not pass through the microfilter from the anode chamber side water supply pipe to the outlet of the filtration water purifier, breakage of the diaphragm of the electrolytic cell is prevented.

[Brief description of the drawings]

FIG. 1a is a normal electrolysis state diagram of a continuous electrolyzed water generating apparatus showing one embodiment of the present invention.

FIG. 1b is a cleaning electrolysis state diagram of the apparatus of FIG. 1a.

FIG. 2a is a normal electrolysis state diagram of a continuous electrolyzed water generation apparatus showing another embodiment of the present invention.

FIG. 2b is a cleaning electrolysis state diagram of the apparatus of FIG. 2a.

FIG. 3a is a normal electrolysis state diagram of a continuous electrolyzed water generation apparatus showing another embodiment of the present invention.

FIG. 3b is a cleaning electrolysis state diagram of the apparatus of FIG. 3a.

FIG. 4a is a normal electrolysis state diagram of a continuous electrolyzed water generation apparatus showing another embodiment of the present invention.

FIG. 4b is a cleaning electrolysis state diagram of the apparatus of FIG. 4a.

FIG. 5a is a normal electrolysis state diagram of a continuous electrolyzed water generator according to another embodiment of the present invention.

FIG. 5b is a cleaning electrolysis state diagram of the apparatus of FIG. 5a.

FIG. 6 is a diagram illustrating a cleaning electrolysis state of a continuous electrolyzed water generating apparatus according to another embodiment of the present invention.

FIG. 7 is a diagram illustrating a cleaning electrolysis state of a continuous electrolyzed water generating apparatus according to another embodiment of the present invention.

FIG. 8a is a longitudinal sectional view of a flow path switching valve device during washing.

8b is a sectional view taken along line AA of FIG. 8a.

FIG. 8c is a longitudinal sectional view of a flow path switching valve device during washing.

8d is a sectional view taken along line BB of FIG. 8c.

FIG. 9a is a normal electrolysis state diagram of an electrolyzed water generation apparatus showing another embodiment of the present invention.

FIG. 9b is a cleaning electrolysis state diagram of the apparatus of FIG. 9a.

FIG. 9c is a cleaning electrolysis state diagram of an electrolyzed water generation apparatus showing another embodiment of the present invention.

FIG. 10a is a water circuit diagram during normal electrolysis showing an example of a flow path switching valve.

FIG. 10b is a water circuit diagram of the flow path switching valve of FIG. 10a during washing.

FIG. 11a is a normal electrolysis state diagram of an electrolyzed water generation apparatus showing another embodiment of the present invention.

FIG. 11b is a cleaning electrolysis state diagram of the apparatus of FIG. 11a.

FIG. 12a is an operation diagram of a drain valve at the time of water supply.

FIG. 12b is a diagram showing the operation of a drain valve when water supply is stopped.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Electrolysis water generator, 2 ... Cathode, 3 ... Anode, 4 ... Electrolysis diaphragm, 5 ... Cathode room, 6 ... Anode room, 7 ... Electrolysis tank, 8 ... Water supply line, 9, 10 ... Drainage line, DESCRIPTION OF SYMBOLS 11 ... drain, 12 ... water purifier, 13 ... common drainage part, 14, 15 ... water supply branch pipe, 16 ... washing bypass, 17 ... 1st flow path switching means, 18 ... 2nd flow path switching means, 19 ... electric control apparatus Reference numeral 20a: valve element, 20b: spring, 21, 23: flow path switching means, 22: chemical liquid addition cylinder, 24, 27: throttle valve, 25: flow meter, 26: cleaning flow path switching valve device, 28: valve casing Reference numeral 29: Water supply outlet, 30: Drainage outlet, 31: Water supply inlet, 32: Wash water outlet, 33, 34: Valve seat, 35: Valve body, 36: Operation rod, 37: Drive device, 38: Flow rate restricting member, 39: closing member, 40: cylindrical body, 41: notch plate, 42: through Water hole, 43: check valve, 44: distribution mechanism, 45: throttle section, 46: flow path switching valve, 47: drainage channel, 48: throttle valve, 49: valve casing, 50: valve body, 51: washing pipe 52, a flow path switching mechanism, 53, a drain pipe, 54, a drain valve, 55, an on-off valve, 56, a valve casing, 57, a diaphragm, 58, a water supply pipe side chamber, 59, a water drain pipe chamber. , 60 ... valve seat, 60 '... valve seat hole, 61 ... valve body, 62 ... spring, 63 ... discharge port 64 ... micro filter

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI C02F 1/50 531 C02F 1/50 531P 540 540B 550 550D 560 560F 1/76 1/76 A (31) Priority claim number Patent application Hei 8-297449 (32) Priority Date Hei 8 (1996) October 18, (33) Priority Country Japan (JP)

Claims (16)

[Claims] 1. A continuous flow in which water supplied from a water supply line is electrolyzed in an electrolytic cell having a cathode chamber and an anode chamber, and alkaline water and acid water generated by electrolysis are separately discharged from a pair of drainage lines. In the cleaning method of the water-type electrolyzed water generating apparatus, at the time of cleaning, water is supplied from the water supply line to the electrolytic cell inlet to suppress the water supply, and the cleaning water is supplied from the outlet side of one of the electrode chambers of the electrolytic cell. A continuous water flow system characterized in that the supply water in which the chamber is back-flowed is drained from the drain pipe of the other electrode chamber while passing water to the other electrode chamber directly or through a pipe on the water supply side. Cleaning method for electrolyzed water generator 2. A water purifier is interposed in a water supply conduit of an electrolytic cell having a cathode chamber and an anode chamber, and is connected to a cathode chamber and an anode chamber of the electrolytic cell through a pair of water supply branch pipes from a common drainage section of the water purifier. Water is supplied independently, and the supplied water is electrolyzed into alkaline water and acidic water, and discharged separately from a pair of drain pipes. Water supply to the tank inlet is suppressed and water is supplied from the outlet side of one of the electrode chambers of the electrolytic cell, and the supply water flowing back through the one electrode chamber is supplied to a pair of water supply branch pipes passing through a common drainage section of the water purifier. Washing method for a continuous water flow type electrolyzed water generator, wherein water is drained from a drain pipe of the other electrode chamber while water is passed to the other electrode chamber of the electrolytic cell through 3. A water supply pipe for an electrolytic cell having a cathode chamber and an anode chamber, which branches into a pair of water supply pipes independently communicating with each of the electrolytic chambers, and a water supply pipe connected to the cathode chamber of the electrolytic cell.
Alternatively, an absorption water purifier and a filtration water purifier are interposed in the upstream and downstream water supply pipes, or the water supply pipe and the cathode chamber side water supply branch pipe in a positional relationship of upstream and downstream, and water is supplied to each electrode chamber of the electrolytic cell. In the cleaning method of the continuous water flow type electrolyzed water generating apparatus, in which the water thus obtained is electrolyzed into alkaline water and acidic water and discharged separately from a pair of drainage pipes, water is supplied from the water supply pipe to the electrolytic cell inlet at the time of cleaning. Water is supplied from the outlet side of one of the electrode chambers of the electrolytic cell while suppressing the supply water that has flowed back through the one electrode chamber to the other electrode chamber of the electrolytic cell through the filtration water purifier. A method for cleaning a continuous flow-through type electrolyzed water generating apparatus, characterized in that water is drained from a drain pipe of the other electrode chamber. 4. Electrolyzing water passing through the electrolytic cell with the electrode of the electrode chamber on the side supplied with water from one drainage pipe of the electrolytic cell as an anode, thereby disinfecting hypochlorite water into the anode electrode chamber. 4. The method for cleaning and disinfecting a continuous water passing type electrolyzed water generating apparatus according to claim 1, further comprising producing and passing the sterilized hypochlorous acid water as washing water. 5. A pair of drains having a water supply pipe provided with a water purifier provided on one side of an electrolytic cell partitioned into a cathode chamber and an anode chamber, and a pair of drains separately connected to the cathode chamber and the anode chamber on the other side. In a continuous water flow type electrolyzed water generating apparatus having a pipeline and electrolyzing water supplied from a water supply pipeline into alkaline ionized water and acidic water and discharging the water from the pair of drainage pipelines, a common drainage of a water purifier is provided. A pair of water supply branch pipes are provided separately from the section to each electrode chamber of the electrolytic cell, and water is supplied from the outlet side of one electrode chamber of the electrolytic cell in a state where water supply from the water supply pipe to the electrolytic cell inlet is suppressed. When water is supplied, the supplied water flows back through the one electrode chamber, flows through a pair of water supply branch pipes that pass through a common drainage section of the water purifier, to the other electrode chamber of the electrolytic cell, and the other electrode chamber. Continuous water flow type electrolyzed water generator characterized by being drained from a drain pipe 6. A pair of drains having a water supply pipe provided with a water purifier provided on one side of an electrolytic cell partitioned into a cathode chamber and an anode chamber, and having a water pipe connected to the cathode chamber and the anode chamber separately on the other side. In a continuous flow-through type electrolyzed water generating apparatus having a pipe and electrolyzing water supplied from a water supply pipe into alkaline ionized water and acidic water and discharging the water from the pair of drain pipes, a common drainage of a water purifier is provided. A pair of water supply branch pipes respectively connected to the respective electrode chambers of the electrolytic cell from the section; branched from a water supply line on the upstream side of the water purifier so as to communicate with an outlet side of one of the electrode chambers of the electrolytic cell. A cleaning bypass piped to the electrolytic cell; first flow path switching means for selectively controlling the flow of water from a water supply pipe to a water supply side of the electrolytic cell and the cleaning bypass side; and the cleaning bypass; Selectively opening and closing the drain outlet side of the electrode chamber to which the washing bypass communicates A continuous flow-through type electrolyzed water generating apparatus, comprising: 7. The continuous flow type electrolyzed water generation apparatus according to claim 6, wherein the first flow path switching means has a function of part or all of the function of the second flow path switching means. 8. A pair of drains having a water supply pipe provided with a water purifier provided on one side of an electrolytic cell partitioned into a cathode chamber and an anode chamber, and a drain connected to the cathode chamber and the anode chamber separately on the other side. In a continuous water flow type electrolyzed water generating apparatus having a pipeline and electrolyzing water supplied from a water supply pipeline into alkaline ionized water and acidic water and discharging the water from the pair of drainage pipelines, a common drainage of a water purifier is provided. A pair of water supply branch pipes respectively connected to the respective electrode chambers of the electrolytic cell from the section; provided in relation to a water supply pipe on the upstream side of the water purifier or one of the drainage pipes of the electrolytic tank, and supplying water during cleaning. A continuous flow-through type electrolyzed water generation apparatus, comprising: a washing-time flow path switching valve device for switching water flow from a pipeline to one drainage pipeline of the electrolytic cell. 9. A washing-time flow path switching valve device passes a part of the water from the water supply line to the electrolytic tank side of the one drain line of the electrolytic tank, and discharges a part of the water from the drain line. The continuous flow type electrolyzed water generation apparatus according to claim 8, further comprising a distribution mechanism for flowing water to a water port side. 10. An electrolytic cell partitioned into a cathode chamber and an anode chamber has a water supply pipe on one side and a pair of drainage pipes respectively communicating with the cathode chamber and the anode chamber on the other side. In a continuous water flow type electrolyzed water generating apparatus in which water supplied from a pipe is electrolyzed into alkaline ionized water and acidic water and discharged from the pair of drain pipes, a water supply pipe is connected to a cathode chamber and an anode chamber of an electrolytic cell. Branched into a pair of water supply branch pipes that communicate with each other independently, and into the water supply branch pipe leading to the cathode chamber, or to the water supply pipe line and the cathode chamber side water supply branch pipe,
The adsorption water purifier and the filtration water purifier are interposed in the upstream and downstream positions, and the water supply branch pipe between the adsorption water purification apparatus and the filtration water purifier, the water supply branch pipe leading to the anode chamber, and the drainage pipe of the anode chamber are mutually connected. In the meantime, at the time of washing, these two water supply pipes on the electrolytic cell side are separated from the water supply pipe on the water supply pipe side to communicate with each other, and the anode chamber-side water supply pipe communicating with the water supply pipe and the drain pipe of the anode chamber are connected. Continuous water flow type electrolyzed water generator characterized by having a passage switching valve 11. The pressure of the washing acid water flowing through the anode chamber side water supply pipe between the anode chamber side water supply pipe 15b downstream of the flow path switching valve 46 and the discharge port of the filtration water purifier is equal to or higher than a predetermined pressure. 11. A one-way bypass washing circuit, wherein a part of the acidic water for washing is bypassed to a discharge port by bypassing a microfilter in the filter water purifier when the washing acidic water is raised. Water electrolyzed water generator 12. An electrolytic cell partitioned into a cathode chamber and an anode chamber has a water supply pipe on one side and a pair of drainage pipes respectively communicating with the cathode chamber and the anode chamber on the other side. In a continuous flow-through type electrolyzed water generator that electrolyzes water supplied from a pipe into alkaline ionized water and acidic water and discharges the water from the pair of drain pipes, an adsorption water purifier and a filter water purifier are provided in a water supply pipe. Arranged in the upstream and downstream positional relationship, the downstream water supply pipe of the filtration water purifier is branched into a pair of water supply branch pipes, and independently communicates with each electrode chamber of the electrolytic cell, and from the water supply branch pipe that communicates with the anode chamber. A continuous flow-through type electrolytic water, wherein a washing pipe is provided on the water supply side of the filtration water purifier, and a flow path switching mechanism is provided between the anode chamber side water supply branch pipe and the washing pipe. Generator 13. A drainage pipe is branched from a water supply branch pipe leading to the cathode chamber, and the drainage pipe is closed between the drainage pipe and the water supply pipe by the water pressure at the time of water supply of the water supply pipe. And a drain valve for opening a drain pipe at a water pressure when the water supply is stopped.
13. The continuous flow type electrolyzed water generator according to 1 or 12. 14. An electric control device for washing / sterilizing electrolysis by holding or switching an electrode of the electrode chamber on the side where washing water is supplied from a drain pipe to an anode during washing / sterilization. Claims 5, 6, 7, 8, 9, 1
The continuous water flow type electrolyzed water generator according to 0, 11, 12 or 13. 15. An electric control device that enables washing / sterilization electrolysis by holding or switching an electrode of the electrode chamber on the side supplied with water from the outlet side of the electrolytic cell at the time of washing / sterilization. 5. A washing bypass or a washing flow path switching valve device, wherein a flow restricting mechanism is provided.
The continuous water passing type electrolyzed water generator according to 9, 10, 11, 12, 13 or 14 16. A water supply inlet to which a water supply line is connected, a water supply outlet to which a water supply line to a water purifier is connected, a washing water outlet to be connected to one drainage line of an electrolytic cell, and an electrolytic cell. A valve casing having a drain outlet connected to a drain portion of the one drain pipe; a water passage moving from the water inlet to the water outlet through the valve casing, and a washing water outlet and a drain outlet from the water inlet. A valve body for selectively opening a water passage to the washing water outlet and the drainage outlet from the water supply inlet. The valve body is introduced from the water supply inlet. The flow used in the electrolyzed water generator according to claim 8 or 9, further comprising a flow restrictor for discharging a part of the water to a drain outlet and discharging the remaining water from the wash water outlet. Road switching valve device