JPH09262585A - Sterilizing and bacteriostatic method of continuous electrolytic water making apparatus and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To subject the water emitting pipe of an electrolytic water making apparatus and the water supply pipe on the downstream side of a water purifier to sterilizing and bacteriostatic treatment by using water having high sterilizing properties. SOLUTION: In a continuous electrolytic water making apparatus, the electrode of an electrolytic cell 2 on the side communicating with a water emitting pipe 3 is set to an anode and water is electrolyzed within the electrolytic cell 2 while the supply of water to the electrolytic cell 2 is intermittently stopped not only to control a pH value low as compared with that at a time of the usual electrolytic making of water but also to fill the region from the electrolytic cell 2 to the outlet of the water emitting pipe 2 with electrolytic acidic water much containing hypochloric acid. Therefore, the continuous electrolytic water making apparatus is equipped with an electric control unit 11 controlling the electrode of the electrolytic cell 2 on the side communicating with the water emitting pipe 3 to an anode by closing a sterilizing.bacteriostatic switch to perform electrolysis and automatically stopping the supply of water during electrolysis intermittently. A hypochloric acid generator is provided on the outlet side of the water purifier 19 interposed on the downstream side of an electromotive valve 10 and, at a time of sterilization, the water supply pipe on the downstream side of the water purifier 19 is subjected to sterilizing.bacteriostatic treatment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilization / bacteriostatic method for a continuous electrolyzed water producing apparatus and a continuous electrolysis water conditioning apparatus equipped with an apparatus for carrying out this method.

[0002]

2. Description of the Related Art A continuous electrolyzed water generator that electrolyzes water supplied from a water supply pipe into alkaline water and acidic water and discharges it prevents the growth of bacteria in the electrolyzer and also prevents bacteria from spouting pipes. Must be prevented. As a means for this,
Electrolyte with the electrode of the electrolytic cell on the side leading to the discharge pipe as the anode,
Here, a method has been proposed in which acidic water is generated, and the acidic water is caused to flow through a discharge pipe to sterilize and sterilize a region communicating with the discharge pipe of the electrolytic cell and a discharge port of the discharge pipe with electrolytic acid water.

[0003]

However, the conventional method uses acidic water that has been electrolytically conditioned while passing water, as in the case of ordinary electrolytically conditioned water. The chloric acid concentration did not rise sufficiently, and a bactericidal effect that could meet expectations was not obtained.

In particular, a device for discharging a large amount of alkaline water by setting the flow rate ratio of the cathode chamber to the anode chamber to 1: 1 or more during the production of normal electrolyzed water, for example, the flow rate ratio of water on the cathode side and the anode side of the electrolytic cell. In the case of a device that uses alkaline water from the spout with 3: 1, if the polarity of the electrode is reversed during sterilization and cleaning, the flow rate on the anode side becomes three times that on the cathode side, so it is generated on the anode side. The pH of acidic water does not drop, and the concentration of hypochlorous acid is low. Therefore, even if the spout is filled with such acidic water, it is difficult to sterilize the area from the electrolytic cell to the spout and prevent the invasion of various bacteria from the spout.

In the above case, if the flow rate ratio is reversed at the same time when the polarity of the electrodes is reversed, the flow rate ratio of acidic water and alkaline water becomes 1
Although it becomes a ratio of 3, this requires an apparatus such as a flow rate switching valve and is uneconomical because a large amount of waste water is not used for sterilization and cleaning. Also, above all, there is no change in using acidic water that has been electrolytically conditioned while passing water, so lower the pH of acidic water and increase the concentration of hypochlorous acid if the flow rate ratio is reversed. Is impossible.

Therefore, the first object of the present invention is to lower the pH value from the electrolyzer to the outlet of the water discharge pipe on the use side at a predetermined sterilization cleaning time, and to lower the hypochlorous acid concentration compared with the normal electrolytic water conditioning. It is intended to provide a method and a device for sterilizing and sterilizing highly controlled electrolytic acidic water.

[0007] By the way, in the above-mentioned continuous electrolyzed water generator, it is customary to electrolyze the water filtered by the water purifier in the electrolyzer. However, when the water purifier is installed in the water supply pipe, the activated carbon of the water purifier is used to supply tap water. Since chlorine in the water is removed, it is easy for bacteria to propagate in the water supply pipe from the water purifier to the electrolytic cell.

Therefore, a second object of the present invention is to lower the pH value from the electrolytic cell to the outlet of the water discharge pipe on the use side during a predetermined sterilization cleaning and to lower the hypochlorous acid concentration compared with the normal electrolytic water conditioning. It is an object of the present invention to provide a method and an apparatus for sterilizing and sterilizing highly controlled electrolytic acidic water and sterilizing a pipe line from a water purifier outlet side of a water supply pipe to an electrolytic cell inlet with hypochlorous acid water.

[0009]

The method of the present invention for attaining the first object is to electrolyze water supplied from a water supply pipe, and generate alkaline water and acid water to a utilization side water discharge pipe. In a continuous electrolyzed water generator that discharges water from the drainage channel, by electrolyzing the water in the electrolyzer while intermittently stopping the water supply to the electrolyzer by using the electrode of the electrolyzer on the side communicating with the discharge pipe as an anode. The method is characterized in that the pH value is controlled to be lower than that of normal electrolytically regulated water, and electrolytic acidic water having an increased hypochlorous acid concentration is filled from the anode region of the electrolytic cell to at least the outlet of the water discharge pipe.

The electrolyzed water producing apparatus of the present invention for achieving the above-mentioned first object is an electrolyzer capable of performing electrolytic water conditioning by switching the polarities of electrodes, and an electric motor for controlling water supply to this electrolyzer. In a continuous electrolyzed water generator equipped with a valve that drains alkaline water and acidic water produced in the electrolyzer from the discharge pipe and drain pipe, by turning on the washing switch, the electrode of the electrolyzer on the side communicating with the discharge pipe becomes the anode. And an electric control device for controlling the electric valve intermittently and automatically.

Next, in the method of the present invention for achieving the above second object, the water supplied from the water supply pipe is filtered by a water purifier and then electrolyzed in an electrolytic cell to utilize the generated alkaline water. In a continuous electrolyzed water generator that drains acid water from the drain pipe on the side and discharges acidic water from the drain, during sterilization, the electrode of the electrolyzer on the side communicating with the discharge pipe is used as the anode, and the water supply to the electrolyzer is intermittent. By electrolyzing the water in the electrolytic cell while stopping the electrolysis, the pH value is controlled to be lower than that of normal electrolytically conditioned water, and electrolytic acid water with an increased hypochlorous acid concentration is used as the anode region of the electrolytic cell. From at least the outlet of the water discharge pipe to generate hypochlorous acid at the outlet side of the water purifier, and fill the water supply pipe from the outlet side of the water purifier to the electrolytic cell with hypochlorous acid sterilized water. And

The apparatus of the present invention for achieving the above-mentioned second object includes an electrolytic cell capable of performing electrolytic water conditioning by switching the polarities of electrodes, and a water supply pipe for supplying water to this electrolytic cell. , Continuous electrolysis that is equipped with an electric valve that is installed in this water supply pipe and controls the water supply to the electrolyzer, and discharges the alkaline water generated in the electrolyzer from the water discharge pipe on the use side and the acidic water from the drain pipe. In the water generating device, a water purifier interposed between the electric valve of the water supply pipe and the electrolytic cell; hypochlorous acid having a hypochlorous acid generating electrode arranged in an outlet side water passage of the water purifier. Generator and; by turning on the sterilization / cleaning switch, the electrode of the electrolytic cell on the side communicating with the water discharge pipe on the use side is controlled to be an anode for electrolysis, and a hypochlorous acid generator is provided on the outlet side of the water purifier. , The electric valve is intermittently operated during this anode switching electrolysis. Characterized by comprising a; and the electric control unit for automatic control.

[0013]

[Function] When sterilizing and sterilizing the electrolyzed water generator, the electrode on the side communicating with the discharge pipe is used as an anode to electrolyze the water in the electrolyzer to generate acidic water in the anode region of the electrolyzer. At the same time, this acidic water is sent out to the discharge pipe by the subsequent water supplied to the electrolytic cell. At this time, since the present invention electrolyzes while intermittently stopping the water supply to the electrolysis tank by the automatic control of the electric valve, the water in the electrolysis tank is electrolyzed in the stored water state when the water supply is stopped. Time becomes relatively long. Therefore, the hydrogen ion concentration of the electrolyzed water in the anode region gradually increases and becomes strong electrolyzed acidic water with a low pH value. At the anode side, chlorine ions (Cl ions) in the water become chlorine (Cl ₂ ), and (H ₂
Since it reacts with O) to generate hypochlorous acid (HClO), the electrolyzed acidic water described above becomes water containing more hypochlorous acid.

The electrolyzed acidic water thus produced is
Although it is sent out to the discharge pipe by water supply to the electrolysis tank, the present invention continues electrolysis while intermittently stopping water supply as described above, so by adjusting the water supply stop electrolysis time, the pH value is low,
Moreover, highly sterilized acidic water with a high concentration of hypochlorous acid is filled from the electrolytic cell region leading to the discharge pipe to the discharge port of the discharge pipe, and sterilization from the electrolytic bath to the discharge port and germs from the discharge port Will be prevented.

Further, the continuous electrolyzed water producing apparatus of the present invention comprises:
When the washing switch is turned on, a positive (+) voltage is applied to the electrode of the electrolytic cell on the side communicating with the discharge pipe, and the electric valve that controls the water supply to the electrolytic cell is turned on and off. Automatically open and close automatically (intermittently). Therefore,
While the water supply is stopped, the passage of water through the electrolyzer is stopped and electrolysis is performed in a water storage state, so that the hydrogen ion concentration of the electrolyzed acidic water becomes high, and a large amount of hypochlorous acid is generated. Then, the generated acidic water is sequentially discharged toward the water discharge port of the water discharge pipe by the intermittent water supply pressure.

In this way, for example, the water supply is stopped for 3 seconds,
The electrolyzed acidic water having a low pH value and a high hypochlorous acid concentration is generated from the electrolytic cell by discharging water from the electrolytic cell by suspending the water supply to the electrolytic cell and electrolyzing the water intermittently every predetermined time like 1 second. Up to.

Claim 3 for achieving the second object.
In addition to the above, the inventions of 4 and 4 have the following effects. That is, when the electric valve of the water supply pipe operates intermittently so as not to pass water, in parallel with the electrolysis of the electrolytic cell whose polarity is controlled, the hypochlorous acid generator of the water purifier outlet side is provided. A voltage is applied to the electrodes, and hypochlorous acid is generated in the water in the retention state that has passed through the filter layer of the water purifier, and becomes hypochlorous acid sterilized water. By intermittently operating the water supply pipe electric valve, this water is sequentially sent out, so that the water supply pipe line from the outlet of the water purifier to the electrolytic cell is filled with hypochlorous acid sterilizing water to sterilize and sterilize.

[0018]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a schematic structure of a continuous electrolyzed water generator used for carrying out the method of claim 1, in which raw water is supplied to an electrolytic cell 2 through a water supply pipe 1 and electrolytic water conditioning is performed in the electrolytic cell 2. The alkaline water and the acidic water are separately discharged from the water discharge pipe 3 and the drain pipe 4 on the user side by the water supply pressure.

In the illustrated embodiment, the electrolytic cell 2 is used as a negative electrode 5.
A diaphragm membrane electrolytic cell in which a space between the positive electrode 6 and the positive electrode 6 is partitioned is used, and the water discharge pipe 3 is connected to the cathode chamber 5 to take alkaline water from the water discharge port 8 and the acidic water in the anode chamber 6 is used. An example of an electrolyzed water generation device for flowing the water from the drain pipe 4 to the drain 9 or the like is illustrated. 1 and 2, the electrodes 5 and 6 of the electrolytic cell 2 are made of a material that can withstand both the cathode and the anode, and an apparatus that can be used by changing the polarity of the applied voltage is shown.
Further, an example is shown in which the electric water supply to the electrolyzer is controlled by the electric valve 10 provided in the water supply pipe 1 to open and close.

In order to prevent the growth of germs in the electrolysis tank 2 and the invasion of germs from the outlet 8 of the water discharge pipe 3 of such a continuous electrolyzed water producing apparatus, the present invention provides a method for cleaning the water discharge pipe 3 when the device is washed. A + (plus) voltage is applied to the electrode 5 in the electrode region on the communicating side (that is, the polarity of the electrode 5 is changed to an anode in the illustrated embodiment), and the electric valve 10 of the water supply pipe 1 is opened and closed intermittently. The electrolysis is performed while intermittently stopping the water supply to the electrolytic cell 2 by controlling.

That is, in the above operation, the electrolysis is continued while intermittently stopping the water supply to the electrolysis tank 2, so that the water in the electrolysis tank 2 is electrolyzed in a stored state while the water supply is stopped. Therefore, as the electrolysis time becomes relatively long, the water in the anode chamber 2 becomes strongly electrolyzed acidic water having a low pH value, and chlorine ions (Cl ions) in the water become chlorine (Cl ₂ ) on the anode side. Further, since it further reacts with water (H ₂ O) to generate hypochlorous acid (HClO), the above-mentioned electrolytic acidic water becomes water containing more hypochlorous acid.

Further, since the strongly electrolyzed acidic water continuously produced in this way is intermittently sent to the water discharge pipe 3, the pH value from the electrolytic cell 2 to the outlet 8 of the water discharge pipe 3 is adjusted to a low pH value. It is filled with electrolyzed acidic water, and sterilizes from the electrolytic cell to the water outlet (sterilizing action) and prevents invasion of various bacteria from the water outlet (bacteriostatic action).

As described above, according to the present invention, acidic water having a strong bactericidal power, which is adjusted to have a lower pH value and a higher hypochlorous acid concentration than in the case of producing normal electrolyzed water, is used to sterilize and sterilize bacteria. As a result, the flow rate ratio of the cathode chamber to the anode chamber is set to 1: 1 or more, which is particularly advantageous for the sterilization and sterilization of the continuous electrolyzed water generator that discharges more alkaline water than acidic water. This is because, in this type of device, the polarity reversal of the electrode causes the flow rate of the acidic water to be higher than that of the alkaline water, which causes the pH value of the acidic water not to drop so much that the desired hypochlorous acid concentration cannot be obtained. This is because it will end up.

FIG. 1 schematically shows a continuous electrolyzed water producing apparatus according to the present invention, which is equipped with an electric control unit 11 for automatically operating the above sterilizing and washing method. This electric control device 11 controls the polarity switching device 14 of the electrolysis electric circuit 13 by turning on the sterilization / bacteriostatic switch 12 so that a positive voltage is applied to the electrode 5 on the side communicating with the water discharge pipe 3. And a water supply valve control circuit 17 for intermittently opening and closing the electric water supply valve 10. The polarity control circuit 16 switches the polarity switching device 14 to switch to the + (plus) electrode when the electrode 5 on the side communicating with the use-side water discharge pipe 3 has the − (minus) electrode, and reverse polarity. When the electrode 5 has already become a positive electrode, such as during electrolysis, the polarity switching device 14 is held without switching.

Thus, when the sterilization / bacteriostatic switch 12 is turned on, a positive (+) electrolytic voltage is applied to the electrode 5 on the side communicating with the water discharge pipe 3 via the polarity control circuit 16 of the electric control device 11. At the same time, the electric valve 10 is intermittently closed via the water supply valve control circuit 17, and water supply stop and water supply are repeated intermittently. By continuing the electrolysis in this way, the pH of the water in the electrode chamber communicating with the water discharge pipe 3 is lowered, and the water becomes strong sterilizing water containing a large amount of hypochlorous acid.
Then, the highly sterilized acidic water thus generated fills the outlet 8 of the water discharge pipe 3 to sterilize and sterilize.

FIG. 2 shows a schematic structure of a continuous electrolyzed water producing apparatus for carrying out the invention of claim 2, and the same reference numerals as those in FIG. 1 represent the same members. The embodiment of FIG. 2 has the following configuration and functions in addition to the device of FIG. That is, a water purifier 19 filled with a filter medium 18 such as activated carbon or a microfilter is provided between the electric valve 10 of the water supply pipe 1 and the electrolytic cell 2, and hypochlorite is provided in an outlet side water passage of the water purifier 19. Acid generator 20
Is provided. The hypochlorous acid generator 20 may be built in the outlet side of the water purifier 19 as shown in the figure.
It may be provided outside the outlet of the water purifier 19.

The hypochlorous acid generator 20 comprises a pair of electrodes 21, 22 facing each other with at least one of the hypochlorous acid generating electrodes 21, and a voltage is applied between the electrodes. As a result, hypochlorous acid is generated in the purified water that has passed through the water purifier 19.

The electric control device 11 'of the embodiment shown in FIG. 2 is similar to the electric control device 11 of the device shown in FIG. 1, but when the sterilization / bacteriostatic switch 12 is turned on, the electrolytic cell 2 on the side communicating with the water discharge pipe 3 on the use side is connected. The electrode is controlled to be an anode for electrolysis, and during this anode switching electrolysis, the electric valve 10 of the water supply pipe 1 is intermittently controlled, and further, by turning on the switch 12, the hypochlorous acid generator 20 is operated as described above. An electrical circuit is included to apply a voltage to the electrodes 21, 22 to generate hypochlorous acid.

The intermittent control of water supply in the present invention means that the water supply is substantially intermittently performed with the water supply stop time interposed, such as, for example, water supply for 1 second and water supply stop for 3 seconds. There is. Therefore, the electric valve 10 is not limited to the one that opens and closes the water supply pipe 1 as shown in FIGS. 1 and 2, but as shown in FIG. 3, the flow path provided at the branch portion of the branch pipe 23 branched from the water supply pipe 1. The water supply is diverted by the switching valve 24 or the opening / closing valve 25 provided in the branch pipe 23, whereby the water supply is substantially stopped.

Further, in the embodiment shown in the figure, the opening / closing control of the water supply is performed by the electric valve 10 provided in the water supply pipe 1, but the present invention supplies water by the opening / closing electric valve provided on the side of the water discharge pipe and the drain pipe. The same applies when performing control.

By the way, as shown in FIG. 2, in the apparatus of the embodiment in which voltage is applied to the electrodes 5 and 6 of the electrolytic cell 2 and the electrodes 21 and 22 of the hypochlorous acid generator 20 of the water purifier 19 while the water supply is stopped. In that case, of course, it is possible to simultaneously apply a voltage to both electrodes 5, 6 and 21, 22 to simultaneously generate acidic water for sterilizing the discharge pipe on the use side and hypochlorous acid for sterilizing the water supply pipe. , If both electrodes 5, 6 and 21, 22 are fed at the same time, the purpose may not be achieved due to insufficient voltage. In order to solve this problem, preferably, the control system of the electric control device 11 ′ is configured such that the electrode 5 of the electrolytic cell 2 during the water supply stop during the intermittent water supply control (that is, when the sterilization / bacteriostatic switch is turned on), 6 and the power supply to the electrodes 21 and 22 of the hypochlorous acid generator 20 are, for example, 3
The electrolytic layer 2 is used for the first 2 seconds of the water supply stop time.
The voltage is applied only to the electrodes 5 and 6 of the above, and the voltage is applied only to the electrodes 21 and 22 of the hypochlorous acid generator 20 for the subsequent 1 second so that the time is shifted. No voltage is applied to 6 and 21, 22 at the same time.

If the amount of water supplied at one time during the intermittent water supply control is larger than the amount of water stored in the hypochlorous acid generator 20, sterilization /
Water containing no hypochlorous acid was discharged from the water purifier 19 during the bacteriostatic operation, and a part of the water supply pipe from the water purifier 19 to the electrolytic cell 2 was not filled with hypochlorous acid sterilized water. It may occur. In order to solve this problem, the control system of the electric control device 11 ′ is preferably such that at least the electrodes 21 and 22 of the hypochlorous acid generator 20 always have a voltage during the water supply during the intermittent water supply control. When applied, hypochlorous acid is generated in water.

The sterilization / antibacterial switch 12 may be a manual switch such as a manual button or an automatic switch. This automatic switch integrates a timer that operates after a set time, a timer switch such as a 24-hour timer that operates at a fixed time of the day, or a non-use time that does not generate electrolyzed water to a predetermined integrated value. It includes a totalizing switch that is activated when it reaches.

Stopping water supply during sterilization / bacteriolysis The time of electrolysis and water electrolysis is performed in seconds. For example, the process of stopping the water supply for 3 seconds to electrolyze, and the next 1 second to perform electrolysis while supplying water is repeated. As a result, the strongly electrolytic acidic water is discharged from the outlet 8 of the water discharge pipe 3.
Continue until full.

In addition, in the water supply stop electrolysis and the water supply electrolysis at the time of sterilization and sterilization, after adjusting the acidic water in the electrolysis tank 2 to the above-mentioned highly sterilizing water by one water supply stop electrolysis, It may be sent to the water discharge pipe 3 in a form that replaces the strongly electrolyzed acidic water of the electrolyzer with a suitable amount of raw water to be supplied, or by supplying water little by little to the electrolyzer 2 while performing water supply stop electrolysis during water supply, The hydrogen ion concentration and hypochlorous acid concentration of the acidic water in the electrolytic cell 2 may be gradually increased.

The electrolyzed water generator capable of varying the feed water flow rate and ratio is more preferable when the present invention is used in combination with the flow rate adjustment.

A function for changing the level of the applied electrolysis voltage of the electrolyzed water generator is provided so that when the washing operation is started, the applied voltage is automatically increased to the maximum level.
This is convenient because the H value can be further reduced.

In the illustrated embodiment, the case of using the diaphragm electrolyzer is illustrated, but the same applies to the case of using the non-diaphragm electrolyzer.

[0039]

[Effect] Generally, in a continuous electrolyzed water generator that electrolyzes while supplying raw water, water passes through the electrolyzer during electrolysis, so the pH of the electrolyzed acidic water produced is lowered to a value necessary for sterilization. In addition, it was not possible to increase the concentration of hypochlorous acid in acidic water, the present invention, sterilization ·
At the time of sterilization, the electrode chamber leading to the water discharge pipe is used as an anode, and the continuous electrolytic cell is used intermittently as a water storage electrolytic cell.
By simply controlling the polarity of the electrodes and controlling the opening and closing of the water supply, acidic water with a lower pH and a higher concentration of hypochlorous acid will be generated in the electrolytic cell, and in this way By filling the electrolyzed acidic water having high bactericidal properties from the electrolytic cell to the outlet of the water discharge tube, growth of various bacteria in the electrolytic cell and invasion of various bacteria from the water discharge tube are prevented.

Since chlorine in tap water and the like is removed by the activated carbon of the water purifier, it was conventionally easy for bacteria to propagate in the water supply line from the water purifier to the electrolytic cell. Since the pipeline is filled with hypochlorous acid sterilized water,
This problem can be reasonably resolved.

Further, in the present invention, the above-mentioned sterilization / bacteriolysis is automatically operated by the manual switch, the timer switch or the non-use time integrating switch of the electrolyzed water producing apparatus, so that the handling is easy.

The present invention controls the polarity of the electrodes and allows water to flow through.
Since the above sterilization and bacteriostatic control are performed under non-water flow control,
It is economical because the amount of waste water does not increase when sterilizing bacteria.

By shifting the voltage application time to the electrolyzer and the hypochlorous acid generator while the water supply is stopped, a voltage shortage may occur during the sterilization / bacteriostatic operation even if a normal electrolytic water conditioning transformer is used. In addition, since hypochlorous acid is always supplied to the water on the outlet side of the water purifier during water supply, during the sterilization / bacteriostatic operation, the pipe from the water purifier to the electrolytic cell is hypochlorous acid sterilized water. It will surely be filled.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a continuous electrolyzed water generator showing an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a continuous electrolyzed water generator showing another embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of a continuous electrolyzed water generator showing still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Water supply pipe, 2 ... Electrolyte tank, 3 ... Water discharge pipe, 4 ... Drain pipe, 5, 6 ... Electrode, 7 ... Electrolyte diaphragm, 9 ... Drain, 10 ... Electric valve, 11 ... Electric control device, 12 ... Sterilization / Antibacterial switch, 13 ... Electrolytic electric circuit, 14 ... Polarity switching control device, 15 ... Flow rate adjusting unit, 16 ... Polarity control circuit, 17 ... Water supply valve control circuit, 18 ... Filtration material, 19 ... Water purifier, 20 ... Next Chlorous acid generator, 21 ... Hypochlorous acid generating electrode, 22 ... Electrode, 23 ... Branch pipe, 24 ... Flow path switching valve, 25 ... Open / close valve.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C02F 1/50 540 C02F 1/50 540B 550 550L 560 560F

Claims (7)

[Claims] 1. A continuous electrolyzed water generator that electrolyzes water supplied from a water supply pipe, drains the generated alkaline water from a water discharge pipe on the utilization side, and discharges acidic water from a drainage channel, at the time of sterilization. By controlling the electrode of the electrolytic cell on the side communicating with the water tube to be the anode, and by electrolyzing the water in the electrolytic cell while intermittently stopping the water supply to the electrolytic cell, a pH value higher than that of ordinary electrolytic water conditioning is obtained. A method for sterilizing and sterilizing a continuous electrolyzed water generator, which comprises filling the electrolyzed acidic water, which has been controlled to be low and has an increased hypochlorous acid concentration, from the anode region of the electrolytic cell to at least the outlet of the discharge pipe. 2. A continuous system in which water supplied from a water supply pipe is filtered by a water purifier and then electrolyzed in an electrolyzer to discharge generated alkaline water from a user-side discharge pipe and acidic water from a drainage channel. In the electrolyzed water generator, at the time of sterilization, by controlling the electrode of the electrolyzer on the side communicating with the discharge pipe to be the anode, and by electrolyzing the water in the electrolyzer while intermittently stopping the water supply to the electrolyzer. , The pH value is controlled to be lower than that of normal electrolytic water conditioning, and electrolytic acidic water with increased hypochlorous acid concentration is filled from the anode area of the electrolytic cell to at least the outlet of the water discharge pipe, and at the outlet of the water purifier. Side to generate hypochlorous acid and fill the water supply pipe from the outlet side of the water purifier to the electrolytic cell with hypochlorous acid sterilizing water to sterilize and sterilize the continuous electrolyzed water generator 3. An electrolytic cell capable of performing electrolytic water conditioning by switching the polarities of electrodes, a water supply tube for supplying water to this electrolytic cell, and a water supply tube interposed in this water supply tube to control water supply to the electrolytic cell. In a continuous electrolyzed water generator that discharges alkaline water generated in the electrolysis tank to the water discharge pipe on the user side and drains acidic water from the water discharge pipe by turning on the sterilization / bacteriostatic switch, The electrolysis cell on the side communicating with the water discharge pipe is controlled to switch to an anode for electrolysis, and an electric control device for automatically controlling the electric valve intermittently during the anode switching electrolysis is provided. Electrolyzed water generator 4. An electrolytic cell capable of performing electrolytic water conditioning by switching the polarity of electrodes, a water supply tube for supplying water to this electrolytic cell, and a water supply tube interposed in this water supply tube to control water supply to the electrolytic cell. In a continuous electrolyzed water generator that discharges the alkaline water generated in the electrolysis tank from the water discharge pipe on the use side and the acidic water from the drain pipe, the electric valve between the electric valve of the water supply pipe and the electrolysis tank An intervening water purifier; a hypochlorous acid generator in which a hypochlorous acid generating electrode is arranged in the water passage on the outlet side of the water purifier; The electrode of the electrolytic cell on the side communicating with the water pipe is controlled to be an anode for electrolysis, and a voltage is applied to the electrode of the hypochlorous acid generator on the outlet side of the water purifier. An electric control device for automatically controlling the valve intermittently; A continuous electrolyzed water generator characterized by comprising 5. An electrolytic cell capable of performing electrolytic water conditioning by switching the polarities of electrodes, a water supply tube for supplying water to this electrolytic cell, and a water supply tube interposed in the water supply tube to control water supply to the electrolytic cell. In a continuous electrolyzed water generator that discharges the alkaline water generated in the electrolysis tank from the water discharge pipe on the use side and the acidic water from the drain pipe, the electric valve between the electric valve of the water supply pipe and the electrolysis tank An intervening water purifier; a hypochlorous acid generator in which a hypochlorous acid generating electrode is arranged in the water passage on the outlet side of the water purifier; While controlling the electrode of the electrolytic cell on the side communicating with the water pipe to be the anode, controlling the electric valve to intermittently stop the flow of water from the water supply pipe to the electrolytic cell, and when the sterilization / bacteriostatic switch is turned on. While the water supply is stopped, the electrode next to the electrolytic cell and the water purifier Apply each voltage to the electrodes of the chlorous acid generator at different times, while constantly applying voltage to the electrodes of the hypochlorous acid generator during water supply when the sterilization / bacteriostatic switch is turned on. An electric control device; 6. An electric valve for branching the drainage branch pipe from the water supply pipe and providing a branch valve of the branch pipe or the drainage branch pipe with an electric valve for controlling water supply to the electrolytic cell. Continuous electrolyzed water generator described 7. The sterilization / bacteriostatic switch is a manual operation switch, or an automatic switch such as a timer switch or an integrating switch which detects a predetermined integrated value of the non-use time of the electrolytic cell and transmits a signal. Claim 3, 4 or 5
Continuous electrolyzed water generator described