JPH07328634A - Ionized water producing device and method for washing ph sensor - Google Patents

Abstract

PURPOSE:To provide a maintenance-free ionized water producing device in which the measurement, indication and adjustment of pH concentration can be made with high accuracy and to provide a maintenance-free method for washing a pH sensor in which the adjustment and indication of pH concentration can be made with high accuracy. CONSTITUTION:In this ionized water producing device, a pH detecting chamber 24 is installed so as to be branched off from a discharge pipe 12 installed in an electrolyzer 7. A pH sensor 25 is arranged in the pH detecting chamber 24, and a washing liquid feeding part for feeding washing liquid thereto is provided. In the method for washing the pH sensor, the contact part with the ionized water and the pH detecting chamber provided are washed with washing liquid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention electrolyzes raw water such as tap water and well water to produce alkaline ionized water for drinking and medical use, and acidic ionized water for use as lotion and sterilizing wash water. And a pH sensor cleaning method for cleaning a pH sensor for detecting the pH of ionized water.

[0002]

2. Description of the Related Art In recent years, ion water generators have become widespread, reflecting the "health boom". This ion water generator electrolyzes tap water or the like in an electrolytic cell to generate acidic ion water on the anode side and alkaline ion water on the cathode side.

A conventional continuous electrolysis type ionized water generator will be described. FIG. 4 is a schematic overall view of a conventional ionized water generator. 1 is a raw water pipe such as tap water, 2 is a faucet,
Reference numeral 3 is an ion water generator connected to the raw water pipe 1 via the faucet 2. Reference numeral 4 is a water purifier equipped with activated carbon or hollow fiber membrane inside, 5 is a mineral supply unit for adding minerals to the raw water to enhance conductivity, and 6 is confirmation of water flow, and instructs the controller described later to start control. A flow sensor, 8 is a diaphragm that divides the electrolytic cell 7 that electrolyzes the water that has passed through the flow sensor 6, and 9 and 10 are electrode plates arranged in each electrode chamber formed by dividing the electrolytic tank 7 into two parts. , 11 are water on the electrode plate 10 side (electrode plate 1
Drainage pipe that discharges acidic ionized water when 0 is an anode, 1
2 is a discharge pipe for discharging water on the side of the electrode plate 9 (alkali ionized water when the electrode plate 9 is a cathode), and 13 is drain water for residual water in the electrolytic cell 7 or cleaning water in which the scale during electrode cleaning is dissolved. Is a solenoid valve for draining water from the electrode plate 10 side through the drain pipe 11 (acidic ion water when the electrode plate 10 is an anode), accumulated water in the electrolytic cell 7 or washing water, and 16 is a drain pipe. A power supply unit for converting alternating current from the power-on plug 15 into direct current, 17
Is a controller for controlling the operation of the ionized water generator 3, 1
Reference numeral 8 denotes an operation display unit for displaying an operation state of the ion water generator 3 and setting operation conditions and the like.

The operation of the conventional ionized water generator constructed as above will be described below. The raw water that has been passed through the water tap 1 from the raw water pipe 1 has a water purifier 4 that removes the residual chlorine odor in the raw water and impurities such as general bacteria, and the mineral supply unit 5 dissolves minerals such as calcium glycerophosphate. After being treated with water that can be easily electrolyzed, water is passed through the flow rate sensor 6 to the electrolytic cell 7. On the other hand, an AC voltage is applied from the power-on plug 15, and after being converted into direct current by the power supply section 16, power is supplied to the electrode plate 9 and the electrode plate 10 of the electrolytic cell 7. As a result, acidic ionized water is generated in the anode chamber and alkaline ionized water is generated in the cathode chamber. When a voltage is applied so that the electrode plate 9 has a negative voltage while passing water, the alkaline ionized water is discharged from the discharge pipe 12. Obtained continuously.

Further, the ion water generator 3 may apply a positive voltage to the electrode plate 9 when acidic ionized water is required, and when water purification is required, water may be passed without applying a voltage. Good. As described above, the ion water generator of this conventional example can switch between acidic water and purified water.

However, although this conventional ion water generator can change the pH concentration by changing the voltage applied to the electrolytic cell 7 to change the electric field strength, a pH sensor or the like is not provided. Without this, it was not possible to automatically control the pH concentration.

Therefore, a technique for improving this by disposing a pH sensor in an ion generator (Japanese Utility Model Laid-Open No. 5-22093)
Is proposed. That is, this method is provided with a pH sensor and a flow rate sensor on the downstream side of the electrolytic cell, and a control device for controlling the drive voltage to the electrolytic cell and the flow rate control valve based on the outputs from the pH sensor and the flow rate sensor. By feeding back the sensor output of (1) to the electrolytic cell or the flow rate control valve, ionized water having a desired pH concentration can be obtained.

Regarding this pH sensor, a technique (Japanese Utility Model Publication No. 55-9273) for cleaning the pH sensor when an agglomerate adheres to the pH sensor has been conventionally proposed. In other words, in this technology, the pH sensor installed inside the acidic wastewater treatment tank equipped with a stirring function is electrically connected to the tank of alkaline solution or fresh water that serves as a cleaning agent. The pH sensor is washed by stopping the supply of the solution, and during that time, an alkaline solution or fresh water is caused to flow into the wastewater treatment layer and stirred.

[0009]

However, the prior art in which the pH sensor is arranged in the ion water generator (see the practical application of the paper).
22093), Ca ions, scales and other agglomerates tend to adhere to the pH sensor, and the sensor output of the pH sensor becomes inaccurate in a short time. Therefore, it is appropriate to drive the electrolytic cell and the flow control valve. There was a problem that the pH of the ionized water produced could not be adjusted accurately. Further, when the pH sensor is regularly taken out of the electrolytic cell to wash the attached agglomerates, there are problems that the removal and washing work are complicated and the pH sensor is easily damaged. Further, in the conventional pH measurement, the pH measurement value is likely to fluctuate, and there is also a problem that the installation location of the pH sensor and the degree of freedom in design are limited.

Further, in the prior art (Japanese Utility Model Publication No. 55-9273) having a mechanism for cleaning the pH sensor by agitating the inside of the waste water treatment tank with stirring, the control is complicated and the apparatus is large. However, there is a problem in that it takes a long time to clean and wash.

There is also a problem that the electrolysis operation is stopped when cleaning the pH sensor. The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a maintenance-free ion water generator capable of accurately measuring and displaying pH concentration and generating ion water adjusted accurately. .

The present invention also provides accurate adjustment of pH concentration.
It is an object of the present invention to provide a method of cleaning a pH sensor that can be displayed and is maintenance-free.

[0013]

In order to achieve the above object, the ion water generator of the present invention is characterized in that a pH detection chamber is provided by branching to a discharge passage provided in an electrolytic cell.

Further, it is desirable that the pH detection chamber is provided with a pH sensor and a cleaning liquid supply unit for supplying the cleaning liquid to the pH detection chamber.

Further, the cleaning liquid is preferably electrolyzed water produced in the electrolytic cell. Furthermore, it is suitable that the cleaning solution for the pH sensor is acidic ionized water.

Further, it is desirable that the pH detection chamber be provided with an overflow pipe connected to the drain pipe.

Further, it is preferable that the cleaning liquid supply section is a connection path for supplying the electrolysis-generated water from the electrolytic cell to the pH detection chamber.

Further, it is suitable that the cleaning liquid supply section is a branch channel for supplying the electrolytically generated water in the discharge channel to the pH detection chamber.

Further, it is desirable that the pH detecting chamber is provided with an ultrasonic vibrator or a stirring mechanism.

Further, it is preferable that the pH detection chamber is provided with an injection nozzle. Further, a flow rate integrator and a controller for comparing and determining the integrated flow rate of the flow rate integrator with a preset integrated flow rate are provided side by side in the discharge flow path, and a valve that opens and closes according to a signal from the controller is provided in the cleaning liquid supply unit. Is appropriate.

According to the pH sensor cleaning method of the present invention, a pH detection chamber equipped with a pH sensor is provided at the contact portion of ionized water,
A feature is that a cleaning liquid is supplied to the detection chamber.

Further, the pH sensor cleaning method of the present invention is characterized in that the cleaning liquid is acidic water.

[0023]

In the ion water generator of the present invention, the pH detection chamber is provided by branching to the discharge flow path connected to the electrolytic cell, so that the pH detection chamber can be handled independently of the discharge flow path. It is possible to suppress the influence on the measurement accuracy of the pH sensor due to fluctuations in the flow rate and water temperature.

Further, since the pH sensor is provided in the pH detection chamber, the pH concentration of the ion-generated water can be measured,
Since the cleaning liquid supply unit for supplying the cleaning liquid is also provided, the pH sensor can be cleaned without affecting the discharge flow path and the like.

Further, since the cleaning liquid is the electrolyzed water generated in the electrolytic cell, the cleaning operation can be simplified.

Further, since the cleaning liquid for the pH sensor is acidic ionized water, aggregates such as Ca ions can be cleaned and removed in a short time.

Further, since the pH detection chamber is provided with the overflow pipe, the cleaning liquid can be stored in a fixed amount.

Further, since the cleaning liquid supply unit is a connection path for supplying electrolysis-generated water from the electrolytic cell to the pH detection chamber, acidic ionized water generated in the electrolytic cell can be used as the cleaning liquid.

Further, since the cleaning liquid supply section is a dividing flow path for supplying the electrolytically generated water in the discharge flow path to the pH detection chamber, the acidic ionized water generated in the electrolytic cell can be directly used as the cleaning liquid.

Further, since the ultrasonic transducer or the stirring mechanism is provided in the pH detection chamber, it is possible to easily wash and remove aggregates attached to the pH sensor.

Further, since the injection nozzle is provided in the pH detecting chamber, it is possible to wash and remove the agglomerates adhering to the pH sensor in a short time.

Further, since a flow rate integrator and a controller for comparing and comparing a flow rate integrator with a preset integrated flow rate are provided in the discharge flow path, and a valve for opening and closing by a signal from the controller is provided in the cleaning liquid supply section, the automatic Further, it is possible to detect the cleaning time of the pH sensor and supply the cleaning liquid.

Further, since the pH detection chamber provided with the pH sensor is provided in the contact portion of the ion water and the cleaning liquid is supplied, the pH sensor can be easily maintained and can be easily cleaned.

Further, since the cleaning liquid is acidic water, the deposits on the pH sensor such as Ca ions can be cleaned and removed in a short time.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for cleaning an ion water generator and a pH sensor according to an embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic overall view of an ionized water generator in one embodiment of the present invention, and FIG. 2 is a partially enlarged view of FIG. 1 and 2, 1 is a raw water pipe, 2 is a faucet, 3 is an ion water generator, 4 is a water purifier, 5 is a mineral supply unit, 6
Is a flow rate sensor, 7 is an electrolytic cell, 8 is a diaphragm, 9 and 10 are electrode plates, 11 is a drainage pipe for acidic ionized water, 12 is a discharge pipe for alkaline ionized water, 13 is a solenoid valve, and 14 is It is a water discharge pipe. The same reference numerals as those of the conventional example have the same basic operations and functions, and thus the description thereof will be omitted.

Reference numeral 19 denotes a flow rate integrator provided in a part of the discharge pipe 12 for measuring and displaying the flow rate of ion water. Reference numeral 24 denotes a pH detection chamber provided by branching to the discharge pipe 12, to which a pH sensor 25 and an ultrasonic transducer 26 are attached. Also p
In the H detection chamber 24, a branch pipe 20 serving as a cleaning liquid supply unit provided with a valve 21, a connection pipe 22 as a cleaning liquid supply unit provided with a valve 23 to which ion water is supplied, and a backflow prevention valve 28.
Is connected to the overflow pipe 27. The cleaning liquid outlet of the cleaning liquid supply unit is provided with the outlet end extended so as to come close to the bottom of the pH detection chamber 24, and it is devised so that new ion water is always stored in the pH detection chamber. The pH detection chamber 24 has a volume capable of accommodating a pH sensor and accumulating ion water, and has a structure in which the washed and removed agglomerates are easily deposited on the bottom portion with an inclination. Reference numeral 35 denotes a drain drain pipe provided at the bottom of the pH detection chamber 24, which is provided with a valve 36. The accumulated agglomerates are removed from the drain pipe 35.

By the way, the pH sensor 25 is arranged so as to be attached to a position where the electrode portion thereof is sufficiently immersed in the ion water without direct contact with the ion water flowing from the branch pipe 20.
Further, the ultrasonic transducer 26 provided in the pH detection chamber 24 is arranged at a position close to the pH sensor 25 so that the cleaning liquid can be vibrated to easily wash the aggregates attached to the pH sensor.

Since the pH detection chamber 24 is provided separately from the discharge pipe 12 in this manner, the pH concentration can be accurately measured without being affected by the fluctuation of the flow rate of ionized water in the discharge pipe 12. Also, the degree of freedom in design is improved. Also p
Since the H detection chamber 24 has a small volume for detection, it hardly affects alkaline ionized water or the like flowing through the discharge pipe 12, and the pH sensor 25 can be effectively cleaned with a small amount of cleaning liquid. is there. In the present embodiment, the discharge pipe 12 is provided with the pH detection chamber 24. However, according to the pH sensor cleaning method of the present invention, wherever the pH detection chamber is provided in the liquid contact portion where the pH concentration is to be detected, the same as above. Can be washed.

By the way, in the pH sensor 25 of this embodiment, the electrode portion is made of glass. However, pH sensor 2
There is also a type of 5 in which the electrode portion is composed of a semiconductor, an ion conductive diaphragm, or the like, and any pH sensor may be used. In any case, the pH is measured by immersing the electrode part in a liquid, and the adhesion of agglomerated components consisting of dissolved components such as scales and Ca ions in the liquid to the electrode part cannot be avoided. It is necessary to wash the electrode part for accurate measurement of the concentration. In the present embodiment, the pH detection chamber 24 is provided with the connection pipe 22 serving as a connection passage as a cleaning liquid supply unit, and the ultrasonic transducer 26 vibrates and agitates, so that accurate measurement can be performed. In the present embodiment, also during the production of alkaline ionized water, via the connecting pipe 22,
The acidic ionized water, which is the electrolyzed water of the subcomponent generated in the electrolytic bath 7, can be used as a cleaning liquid, and the pH sensor 25 can be cleaned. In addition, a chemical solution or raw water can be used as the cleaning solution. At this time, the valve 21 of the branch pipe 20 is closed. On the other hand, when acidic ionized water is generated by the ionized water generator 3, the acidic ionized water is discharged from the discharge pipe 12. In this embodiment, the branch pipe 20 which is a branch channel is used as a cleaning liquid supply unit, and this acidic ionized water can be supplied also as a cleaning liquid. At this time, the valve 23 of the connecting pipe 22
Will be closed. As described above, since the acidic ion water is supplied as the cleaning liquid when producing either of the ion water, it is not necessary to newly provide the cleaning liquid supply unit to supply the acidic ion water from the outside.

The overflow pipe 27 is arranged so as to open above the pH detection chamber 24, stores a fixed amount of ion water in the pH detection chamber 24, and at the same time prevents the retention of ion water, so that new ion water is constantly maintained. The pH concentration can be measured.

Next, 29 is a flow rate integrator 19, 30 is a valve 21, 31 is a valve 23, 32 is a signal path connecting the ultrasonic transducer 26 and the controller 17, and 33 is a pH sensor 25. Signal of controller 17
Is a signal path transmitted to. Here, for cleaning the pH sensor 25, the controller 17 reads the integrated signal of the flow rate integrator 19, compares it with the previously stored integrated flow rate, and makes a determination.
Controller 17 when cleaning reaches the required integrated flow rate
The valve 21 is closed by the signal from and the valve 23 is opened for cleaning. Since the setting of the integrated flow rate stored in the controller 17 in advance can be changed depending on the type of content of dissolved components and impurities in the raw water, the pH can be changed.
The cleaning start time of the sensor 25 can be arbitrarily selected.

Further, 16 is a power supply section for converting AC from the power supply plug 15 into DC, and 18 is the ion water generator 3.
Is an operation display unit for displaying the operation state of and setting operation conditions and the like.

The operation of the ionized water generator constructed as described above will be described below. The raw water supplied from the raw water pipe 1 removes general bacteria and impurities in the water purifier 4, passes through the mineral supply unit 5, becomes mineral-containing water, passes through the flow rate sensor 6, and flows into the electrolytic cell 7. When the inflowing raw water exceeds a certain amount, a DC voltage is applied to the electrodes 9 and 10 by the controller 17, and electrolysis of the raw water starts. By electrolysis, alkaline ionized water is generated around the cathode and acidic ionized water is generated around the anode, and the alkaline ionized water flows out from the discharge pipe 12 and the drainage pipe 11 connected to the electrolytic bath 7, respectively. At this time, when a voltage is applied so that the electrode 9 serves as a cathode and the electrode 10 serves as an anode, most of the alkaline ionized water is discharged to the outside through the discharge pipe 12, and at the same time, a part thereof is branched into the branch pipe 20. And then flows into the pH detection chamber 24. pH detection room 2
When a certain amount or more of alkaline ionized water flows into 4, the overflow pipe 27 overflows into the drain pipe 11. p
The H detection chamber 24 is equipped with a pH sensor 25, which detects the pH concentration of alkaline ionized water and outputs the sensor voltage to the signal line 3.
3 to the controller 17, and the controller 17 causes the operation display unit 18 to display the pH concentration.

Here, the raw water is continuously flowed into the electrode 9,
By continuously applying a voltage to 10, alkaline ionized water can be continuously generated and at the same time, pH
It is possible to continuously detect and display the concentration. If the applied voltage is reversed and the electrode 9 is used as the anode and the electrode 10 is used as the cathode, the acid ion water is discharged from the discharge pipe 12 and the alkaline ion water is discharged from the drain pipe 11 contrary to the above. As a result, acidic ionized water flows into the pH detection chamber 24, and the pH concentration of the acidic ionized water can be detected and displayed.

The flow rate of the alkali ion water accumulated in the flow rate integrator 19 provided in the water discharge pipe 12 is transmitted to the controller 17 through the signal path 29, and when the flow rate exceeds a preset flow rate, the flow rate is provided in the branch pipe 20. Valve 21 is signal line 30
Is closed by a signal from the controller 17 transmitted via the controller 17, then the valve 36 is opened by the signal from the controller 17 and drain valve is closed again, and the valve 23 provided in the connecting pipe 22 is connected via the signal path 31 to the controller. 17
PH detection chamber 2 which is opened by the signal from the acidic ionized water
Inflow to 4. The acidic ionized water overflows from the overflow pipe 27, and after a preset time elapses, the ultrasonic vibrator 26 is transmitted from the controller 17 via the signal path 32.
Add vibration to. This accelerates the cleaning of aggregates such as Ca and scale that adhere to the pH sensor 25 when alkaline ionized water is generated, and can be cleaned and removed in a short time. Further, after a predetermined time has elapsed, the valve 23 is closed and the valve 21 is opened by a signal from the controller 17, and the alkaline ionized water again flows into the pH detection chamber 24 through the branch pipe 20 to continue the pH concentration detection / display operation. Return to the state. However, the controller 17 temporarily stops the display of the operation display unit 18 so as not to display the pH while the pH value is unstable. In this way, the pH sensor 25 can be washed without interrupting the production of alkaline ionized water.
Aggregates deposited in the pH detection chamber 24 after long-term use are removed from the drain pipe 35 each time.

Here, the ultrasonic transducer 26 is adopted as a means for efficiently performing the cleaning / removing work in a short time, but it is not limited to this means. Ie p
It is also possible to use an agitator provided with a rotary blade that is rotated by an electric motor in the H detection chamber 24, or a circulation pump that causes convection. pH
The stirrer system is suitable when a large amount of agglomerates are deposited on the sensor 25, and the circulation pump system is suitable when the amount is medium. When the amount of aggregates is small and the installation space for the stirring mechanism is limited, a method of dipping and cleaning the pH sensor 25 with acidic ionized water stored in the pH detection chamber 24 may be used.

Next, an ion water generator and a pH sensor cleaning method according to another embodiment of the present invention will be described.

FIG. 3 is a partially enlarged view of an ion cleaning type ionized water generator according to another embodiment of the present invention. Note that the description of the reference numerals common to FIG. 1 and FIG.

In FIG. 3, reference numeral 34 denotes an injection nozzle for injecting ion water, which is provided at the tip of the cleaning liquid supply pipe consisting of the branch pipe 20 and the connection pipe 22. The injection nozzle 34 is arranged at a lateral position so that the electrode portion of the pH sensor 25 can be sufficiently washed. Of course, the fuel may be injected from below. As a result, the pH sensor 2 for the aggregates such as Ca and scale attached to the pH sensor 25 when the alkaline ionized water is generated 2
It is possible to easily remove from No. 5 in a short time and enhance the cleaning effect. Since the diameter of the nozzle hole of the injection nozzle 34 is sufficiently smaller than the diameters of the discharge pipe 12, the branch pipe 20 and the connecting pipe 22, it is possible to strongly inject the deionized water with a slight water pressure. Further, since the injection nozzle 34 is installed at a position so as to be immersed in the ion water during the measurement of the pH concentration of the ion water, the injection operation can be performed in the ion water, thereby preventing clogging of the nozzle hole. be able to. In addition, the jetting also has the effect of stirring the ionized water and delaying the adhesion speed of the aggregates to the pH sensor 25.

Therefore, the operation of the ion water generator of this embodiment will be described. The description from the inflow of raw water to the generation of ionized water in the electrolytic cell 7 is omitted here since it overlaps with the above-described embodiment. The flow rate of the alkaline ionized water accumulated in the flow rate integrator 19 provided in the water discharge flow path 12 is transmitted to the controller 17 through the signal path 29, and when the flow rate exceeds a preset flow rate, the valve 2 provided in the branch pipe 20 is provided.
1 is closed by a signal from the controller 17 via the signal path 30. Next, the valve 3 provided in the drain pipe 35
After 6 is opened and most of the ionic water in the pH detection chamber is removed as a drain, the valve 23 provided in the connecting pipe 22 is opened and the acidic ionic water is ejected from the nozzle 34 provided in the pH detection chamber 24. Next, after a lapse of a predetermined time, the valves 23 and 36 are closed by the signal from the controller 17, the valve 21 is opened, and the alkaline ionized water is again supplied with the branch pipe 2.
After 0, it flows into the pH detection chamber 24 and returns to the initial state in which the pH concentration detection / display operation is continued. In this way, the pH sensor can be washed without interrupting the production of alkaline ionized water.

[0052]

As is apparent from the above-described embodiments, according to the present invention, since the pH detection chamber is provided by branching to the discharge flow path, the pH concentration can be stably measured with high accuracy.

Further, since the pH sensor is provided in the pH detection chamber, the pH can be adjusted without affecting other parts, particularly the discharge flow path.
The sensor can be effectively cleaned, and the cleaning can be performed with a simple configuration.

Further, since the electrolyzed water produced in the electrolysis tank is used as the washing water, it is not necessary to supply the washing liquid from the outside, so that the maintenance can be easily performed.

Further, since the pH sensor cleaning solution is acidic ionized water, it is possible to dissolve and clean alkali metals such as Ca contained in the raw water.

Further, since the pH detection chamber is provided with the overflow pipe, the pH concentration can be stably measured, and the pH sensor can be sufficiently washed.

Further, since the electrolytic cell is provided with the connecting path,
The acidic ionized water generated in the electrolytic cell can be used as a cleaning liquid.

Further, since the branch channel is provided in the discharge channel, ion water can be introduced directly from the electrolytic cell, and the pH concentration can be measured and the pH sensor can be cleaned with a simple structure.

Further, since the cleaning liquid in the pH detection chamber can be vibrated by the ultrasonic vibrator or the agitation mechanism, it is possible to easily separate and wash and remove aggregates such as water stains attached to the pH sensor.

Further, since the injection nozzle is provided in the pH detection chamber, the cleaning liquid can be sprayed to wash the pH sensor,
Aggregates can be removed by washing in a short time, and can be washed with a simple structure.

Further, since the flow rate integrator and the controller are connected, the cleaning time of the pH sensor is automatically detected to supply the cleaning liquid, cleaning, drainage, ion water supply, pH concentration measurement, display and pH adjustment. Therefore, it is possible to realize a maintenance-free ion water generator.

Further, since the cleaning liquid is supplied to the pH detection chamber, the pH sensor can be easily cleaned and maintenance-free.
An H sensor cleaning method can be realized.

Further, since the cleaning liquid is acidic water, the pH sensor can be easily cleaned.

[Brief description of drawings]

FIG. 1 is a schematic overall view of an ion water generator according to an embodiment of the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a partial enlarged view of an ion cleaning ion water generator according to another embodiment of the present invention.

FIG. 4 is a schematic overall view of a conventional ionized water generator.

[Explanation of symbols]

 4 Water Purifier 5 Mineral Supply Section 7 Electrolytic Tank 9, 10 Electrode Plate 11 Drainage Pipe 12 Discharge Pipe 17 Controller 18 Operation Display 19 Flow Accumulator 20 Branch Pipe 22 Connection Pipe 24 pH Sensor 25 pH Sensor 26 Ultrasonic Transducer 27 Overflow pipe 34 Injection nozzle 35 Drain drain pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahide Iura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (12)

[Claims] 1. An ion water generator comprising an electrolyzer, a discharge channel connected to the electrolyzer, and a pH detection chamber branched from the discharge channel. 2. An ion water generator characterized in that a pH sensor is provided in the pH detection chamber, and a cleaning liquid supply unit for supplying a cleaning liquid is provided in the pH detection chamber. 3. The ionized water generator according to claim 2, wherein the cleaning liquid is electrolyzed water generated in the electrolytic cell. 4. The ion water generator according to claim 2 or 3, wherein the cleaning liquid is acidic water. 5. The ion water generator according to claim 2, wherein an overflow pipe is provided in the pH detection chamber, and the overflow pipe is connected to a drain pipe. 6. The ion water generator according to any one of claims 2 to 5, wherein the cleaning liquid supply section is a connection path for supplying electrolyzed water from the electrolyzer to the pH detection chamber. 7. The ionized water generation according to claim 2, wherein the cleaning liquid supply unit is a dividing flow path for supplying the electrolytically generated water in the discharge flow path to the pH detection chamber. vessel. 8. The ion water generator according to claim 2, wherein an ultrasonic oscillator or a stirring mechanism is provided in the pH detection chamber. 9. The ion water generator according to claim 2, wherein an injection nozzle is provided in the pH detection chamber. 10. A flow rate integrator provided in the discharge flow path, a controller for comparing and determining the integrated flow rate of the flow rate integrator with a preset integrated flow rate, and a signal from the controller for the cleaning liquid supply unit. The ion water generator according to any one of claims 2 to 9, wherein a valve that opens and closes by means of is provided. 11. A pH sensor cleaning method, comprising: providing a pH detection chamber equipped with a pH sensor in a contact portion with ion water, and supplying a cleaning liquid to the pH detection chamber to clean the pH sensor. 12. The pH sensor cleaning method according to claim 11, wherein the cleaning liquid is acidic water.