JPH10314744A - Alkaline ion water generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce ion water with stabilized pH even in case that flow rate or water quality is changed and prolong the life of a pH sensor in an alkaline ion water generator. SOLUTION: This alkaline ion water producing apparatus is provided with a pH sensor to measure the pH value of ion water and a means to control the ion water to have a prescribed pH value by carrying out feedback of the pH measured value. The apparatus is also provided with an air pump 27 to inject air to a water flowing pipe 26 from an electrolytic bath 13 to the pH sensor 25 and further a water route and a solenoid valve 24 to lead washing water in the electrolytic bath 13 for washing the pH sensor 25 to the pH sensor 25, so that water with stabilized pH value can be discharged and the life of the pH sensor 25 can be prolonged and the sensitivity is kept high.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alkaline water for electrolyzing raw water such as tap water to produce an alkaline ionized water used for drinking and medical use and an acidic ionized water used as a lotion and a sterilizing washing water. It relates to an ion water conditioner.

[0002]

2. Description of the Related Art In recent years, raw water such as tap water is electrolyzed,
BACKGROUND ART Alkaline ion water purifiers for producing alkaline ionized water used for drinking and medical use and acidic ionized water used as lotion, sterilization washing water and the like are becoming widespread.

A conventional so-called built-in type alkali ion water conditioner of the continuous electrolysis type, which is provided under a sink or inside a system kitchen, will be described below.

FIG. 4 is a schematic configuration diagram of a conventional built-in type alkali ion water conditioner, FIG. 5 is a schematic diagram of an operation display unit in the alkali ion water conditioner, and FIG. 6 is a control block of the alkali ion water conditioner. FIG.

In FIG. 4, reference numeral 1 denotes a raw water pipe for tap water or the like;
Is a dedicated water tap for a water purifier, 3 is a water tap, 4 is a raw water supply pipe connected to the raw water pipe 1 via the water tap 3, 5 is a connection between the raw water supply pipe 4 and a water supply pipe of an alkali ion water purifier described later. A water supply pipe connection joint, 6 is a water discharge pipe, and 7 is a water discharge pipe connection joint for connecting a water supply pipe on the side of an alkali ion water purifier described later and the water discharge pipe 6.

Reference numeral 8 denotes an alkali ion water purifier connected via a water supply pipe connection joint 5, and 9 denotes an activated carbon for absorbing residual chlorine in raw water and a hollow fiber membrane for removing general bacteria and impurities therein. Unit 10, a flow rate sensor for confirming water flow and instructing control means to be described later, 11 is a calcium supply unit for imparting calcium ions such as calcium glycerophosphate and calcium lactate to the raw water to increase the conductivity of water, 12 A check valve for preventing backflow of water from the electrolytic cell side described later, 13 is an electrolytic cell for electrolyzing water that has passed through the flow sensor 10 and the calcium supply unit 11, and 14 is an electrode chamber for dividing the electrolytic cell 13 into two parts. , 15 and 16 are electrode plates disposed in each of the electrode chambers formed by being divided into two by the diaphragm 14, and 17 is a water pipe for passing water on the electrode plate 15 side.
Reference numeral 8 denotes an electromagnetic valve (for stopping acidic water) for flowing water on the electrode plate 16 side to an auxiliary water discharge pipe described later, and 19 denotes an auxiliary water discharge pipe for discharging water on the electrode plate 16 side.

Reference numeral 20 denotes a power-on plug, 21 denotes a power supply unit for converting an AC power supply to a DC power supply from the power-on plug 20,
22 is a control means for controlling the operation of the alkali ion water conditioner 8, 23 is an operation display section for displaying an operation such as selection of an electrolysis mode of the alkali ion water conditioner 8 and an operation state,
It can be pulled out from the main unit with a signal line.

As shown in FIG. 5, the operation display section 23 has a mode selection button 230, a generation notification section 231, a pH adjustment button 232, a cleaning notification section 233, and a warning buzzer 234.
Etc. are provided. The mode selection button 230 can select one of an alkaline ionized water generation mode and a water purification mode. In addition, the pH adjustment button 23
2, one of the strong mode, the medium mode, and the weak mode can be switched and selected.

When the water is passed by selecting the respective modes with the mode selection button 230 and the pH adjustment button 232, the control means 22 determines the setting of the electrolysis and the water flow state, and discharges predetermined water after the electrolysis. be able to. The generation notifying unit 231 is a lamp. When the state of the electrolysis is settled, the generation notifying unit 231 turns on the light to notify the user that the quality of the alkaline ionized water and the acidic ionized water generated by the alkali ion water dispenser 8 is stable. The cleaning notification unit 233 is also a lamp. When scales such as Ca and Mg adhere to the electrode plates 15 and 16, the cleaning is performed by reversing the polarity of the voltage for regeneration. I do.

[0010] The warning buzzer 234 is used to warn that the water is not suitable for drinking while discharging the retained water in the alkali ion water conditioner when the water is passed after the washing or after being left for a long time. Then, a notification sound is sounded to notify the user.

Next, a control block of the conventional built-in type alkali ion water conditioner 8 will be described with reference to FIG. Reference numeral 220 denotes an MPU (microprocessor unit) for giving an operation instruction to each control unit described later of the control means 22; 221, a flow detection unit for transmitting a signal from the flow sensor 10 to the MPU 220; An operation display control unit 22 that transmits the information to the MPU 220 and displays the operation display unit 23 according to an instruction from the MPU 220;
Reference numeral 3 denotes an electrolysis control unit that controls the polarity of the electrode plates 15 and 16 in the electrolysis tank 13 and the strength of electrolysis in accordance with the instructions of the MPU 220.
This is an electromagnetic valve control unit that controls (for stopping water with acidic water).

Next, the operation of the conventional built-in type alkali ion water purifier composed of the above-described respective components when producing the alkali ion water will be described below. The user operates the mode selection button 230 and the pH adjustment button 232 of the operation display unit 23 to set the electrolysis mode and electrolysis conditions such as electrolysis strength, and opens the faucet 3. The raw water passed through the faucet 3 passes through a raw water supply pipe 4, where impurities such as residual chlorine odor and general bacteria in the raw water are removed in a water purification section 9, and is passed through a flow rate sensor 10 to a calcium supply section 11. , Dissolves calcium glycerophosphate and the like and treats it with water that is easy to electrolyze, and then passes through the check valve 12 to the electrolyzer 13.

On the other hand, the AC10
0 V is supplied, a DC voltage and a current necessary for control and electrolysis are generated in the power supply unit 21, and the power is supplied to the electrode plates 15 and 16 of the electrolytic cell 13 via the electrolytic control unit 223 in the control unit 22. The electrode plate that applies a relatively positive voltage is the anode,
Assuming that the electrode plate to which the negative voltage is applied is a cathode, an anode chamber and a cathode chamber separated by the diaphragm 14 are formed in the electrolytic cell 13.

After the passage of water, the flow detecting section 221 in the control means 22 reads the signal of the flow sensor 10, and if the flow level exceeds a certain level, it is determined that the water is flowing. At this time, since the electrolysis conditions have already been set in the operation display control unit 222 by operating the operation display unit 23, M
PU220 is used to perform electrolysis by the electrolytic cell 13,
An operation command is output to the electrolysis controller 223 so that the polarity is switched so that the electrode plate 15 becomes a cathode, and at the same time, a command to open the solenoid valve 18 is output to the solenoid valve controller 224. As a result, the electrolysis controller 223 applies a voltage to the electrode plates 15 and 16 so that the electrode plate 15 becomes a cathode, and alkaline ionized water is generated in the cathode chamber of the electrolytic cell 13 and acidic ionized water is generated in the anode chamber. Will be done.

The generated alkaline ionized water is supplied to the water pipe 1
7. Discharged from the water discharge pipe 6 through the water discharge pipe connection joint 7, and the generated acidic ion water is discharged from the auxiliary water discharge pipe 19 through the electromagnetic valve 18.

Further, the control means 22 controls the C
a, When the deposits such as scales made of Mg or the like are attached, when the alkali ion water conditioner 8 is in a water stopping state,
The scale and the like are eluted in the electrolytic water by inverting the polarity of the voltage to wash the electrode plate. Thereafter, when the user passes through the water, it is necessary to discharge the washing water stored in the electrolytic cell 13 to the outside as it is for a few seconds after use. During this time, the washing notifying unit 233 of the operation display unit 23 lights or blinks, and a drinking impossible warning buzzer 234 sounds to notify that the discharged water is not to be drunk.

[0017]

As described above, in the conventional built-in type alkali ion water conditioner, alkaline ion water and purified water can be selected, and the pH of the ion water is set at three levels: strong mode, medium mode, and weak mode. However, when the flow rate or water quality changes, the specified pH
The value cannot be kept constant.

If a pH sensor is provided to measure the pH value and maintain the predetermined pH value, the alkaline ionized water conditioner is always filled with water in the water channel.
The internal solution such as potassium chloride (KCl) of the H sensor easily leaks out, shortening the life of the pH sensor, and using the acidic ion water generated at the time of washing the electrode plate as in a stationary type installed on a sink. And it was difficult to wash the pH sensor.

When the water is drained below the main body of the alkali ion water purifier, it is necessary to temporarily store the waste water in a tank and to periodically drain the water by the user or to pump it up by a pump. It was not practical because of the need for plumbing work for floor drainage.

Therefore, according to the present invention, ion water having a stable pH can be discharged, the life of the pH sensor provided for discharging the ion water having a stable pH is long, and the pH sensor using acidic water is used. It is an object of the present invention to provide an alkali ion water conditioner that can wash water.

[0021]

In order to solve the above-mentioned problems, an alkali ion water conditioner of the present invention comprises a pH measuring means for assisting the control of electrolysis and a feedback value measured by the pH measuring means. It has a configuration provided with means for controlling the ionized water to maintain a predetermined pH value, and has an air pump for injecting air from the electrolytic cell into a water passage of the sensor unit of the pH measurement means and a means for controlling the air pump. In order to wash the pH sensor, a water channel and a valve mechanism for leading the washing water in the electrolytic cell to the pH sensor are provided.

According to the present invention, since the control is performed by feeding back the measured value of the pH measuring means, water having a stable pH can be discharged. Further, the outflow of an internal solution such as potassium chloride (KCl) of the pH sensor can be prevented, and the life of the pH sensor can be extended. Further, it is possible to wash the pH sensor using acidic ion water generated at the time of washing the electrolytic cell.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention provides an electrolytic cell for producing alkaline ionized water and acidic ionized water, a pH measuring means for the ionic water, and a measurement value obtained by the pH measuring means. It is an alkali ion water purifier provided with means for controlling the ionic water to maintain a predetermined pH value by feedback, and is controlled to maintain the predetermined pH value even when the flow rate or the water quality changes, and is stable. It has the effect of discharging ionized water of pH.

According to a second aspect of the present invention, in the alkali ion water conditioner according to the first aspect, the pH measuring means has a sensor section and a water passage to the sensor section, and the pH measuring means is provided in the water passage. It is provided with an air pump for injecting air, and has an effect that the outflow of an internal solution such as potassium chloride (KCl) of the pH sensor is prevented, and the life of the pH sensor can be extended.

According to a third aspect of the present invention, in the alkali ion water conditioner of the second aspect, the sensor section of the pH measuring means is disposed below the electrolytic cell, and is generated when the electrolytic cell is washed. It has a water channel and a valve mechanism for guiding acidic ionized water to the sensor section, and has an operation of cleaning a pH sensor using acidic ionized water generated at the time of cleaning the electrolytic cell.

According to a fourth aspect of the present invention, there is provided the alkali ion water conditioner according to the second aspect, wherein the air pump is provided with an antibacterial air filter for preventing foreign substances from entering the suction port. In addition, it has an effect of preventing intrusion of foreign matter into the water passage, being purified by an antibacterial action, and keeping the inside of the water passage clean.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a schematic configuration diagram of a built-in type alkali ion water purifier according to Embodiment 1 of the present invention, and FIG.
Is a schematic diagram of an operation display unit in the alkali ion water conditioner, and FIG. 3 is a control block diagram of the alkali ion water conditioner.

In FIGS. 1 and 2, the same reference numerals as those used in the description of the conventional example are basically the same as those in the first embodiment, and the detailed description thereof will be omitted.

In FIG. 1, reference numeral 1 denotes a raw water pipe such as tap water;
Is a water tap dedicated to a water purifier, 3 is a water tap, 4 is a raw water supply pipe, 5 is a water supply pipe connection joint, 6 is a water discharge pipe, 7 is a water discharge pipe connection joint, 8 is an alkali ion water purifier, 9 is a water purification section, 10
Is a flow sensor, 11 is a calcium supply unit, 12 is a check valve, 13 is an electrolytic cell, 14 is a diaphragm, 15, 16 are electrode plates,
17 is a water pipe, 18 is a solenoid valve (for stopping water from acidic water), 19 is an auxiliary water discharge pipe, 20 is a plug for turning on power, 21 is a power supply section,
Reference numeral 22 denotes a control unit, and 32 denotes an operation display unit.

Reference numeral 25 denotes a pH sensor connected to a water pipe 26 described later, which is disposed below the electrolytic cell 13.
The pH sensor 25 is suitably of a glass electrode type, a semiconductor electrode type, or an ion conductive diaphragm type. pH
The pH value detection signal detected by the sensor 25 is transmitted to the control unit 22.
Is sent to the pH measuring means 225 and processed.

Numeral 24 denotes a solenoid valve (for cleaning water drainage) for guiding acidic ionized water, which is cleaning water in which scale made of Ca, Mg, etc. is dissolved, for cleaning the electrode plate in the electrolytic cell 13 to the pH sensor 25. When the electrode plate 15 is turned into acidic ionized water after the electrolytic cell cleaning, the cleaning water in the electrolytic cell 13 is opened to guide the cleaning water to the pH sensor 25. is there.

Reference numeral 26 denotes an electrode plate 15 branched from the electrolytic cell 13.
This is a water pipe that allows a part of the water on the side to pass through and connects the electromagnetic valve 24 and the pH sensor 25 with a water channel. The water pipe 26 is also connected to an air pump 27 described later via a check valve 28.

An air pump 27 is a check valve 28 described later.
Is connected to the water pipe 26. 28 is a water pipe 2
6 is a check valve for preventing the water in 6 from flowing into the air pump 27 side.

Reference numeral 29 denotes the water in the water pipe 26 and the air sent from the air pump 27,
A check valve such as a swing valve that prevents the liquid from flowing into the valve.

A check valve 33 prevents water in the water discharge pipe 6 and the water pipe 17 from flowing into the electrolytic tank 13 and the water pipe 26.

Reference numeral 30 denotes an antibacterial air filter attached to the air inlet of the air pump 27. This air filter 30 prevents foreign matter from entering through the suction port of the air pump 27 and keeps the inside of the water passage clean.

Reference numeral 31 denotes a water pipe connecting the water outlet of the pH sensor 25 to the auxiliary water discharge pipe 19.

Reference numeral 32 denotes an operation display unit, as shown in FIG. 2, which allows various settings and displays to be made, and can be drawn out from the main body of the alkali ion water dispenser 8 by a signal line.

In the operation display unit 32, reference numeral 320 denotes a pH setting unit which can set the pH value of the generated ionic water into a plurality of concentration levels in a stepwise manner. Reference numeral 321 denotes a concentration level display lamp that lights when a predetermined concentration level is selected by the pH setting unit 320.

In the first embodiment, the pH setting unit 320
Presses one setting button several times to change the pH setting section 320
Is set to a predetermined density level.
A generation notification unit 322 is turned on when the quality of the ionic water generated during the generation of the ionic water is stabilized. It is desirable to start blinking immediately after the start of ionized water generation and to turn on the light when stabilized. Reference numeral 323 denotes a pH value display section, on which a target pH value is digitally displayed.
Reference numeral 324 denotes a pH fine adjustment unit that finely adjusts the pH value set by the pH setting unit 320 within each concentration level and resets it to an appropriate target value. 326 is a warning buzzer.

Next, a control block of the alkali ion water conditioner 8 will be described with reference to FIG. 220 is an MPU (microprocessor unit), 221 is a flow rate detection unit, and 222 is an operation display control unit. Reference numeral 224 denotes an electromagnetic valve control unit that controls the electromagnetic valve 18 (for stopping the acidic water) and the electromagnetic valve 24 (for discharging the washing water) in accordance with an instruction from the MPU 220. Reference numeral 225 denotes a pH measuring means for measuring the pH value from the detection level of the pH sensor 25. An air pump control unit 226 controls the air pump 27.

Next, the operation of the built-in type alkali ion water conditioner of the first embodiment composed of the above-described respective components when generating the alkali ion water will be described below.

The user operates the pH setting section 32 of the operation display section 32.
Using "0", a predetermined concentration level according to the purpose of use is selected and set, for example "pH 9.5". At this time,
Whether the density level has been set can be confirmed by the density level display lamp 321. At the same time, the pH value of the concentration level set in the pH value display section 323 is digitally displayed. If the user wants to change the digitally displayed pH value, he or she can press the plus or minus button of the pH fine adjustment unit 324 to make the adjustment. After this, faucet 3
Is opened, the raw water passed through the faucet 3 is supplied to the raw water supply pipe 4.
Then, impurities such as residual chlorine odor and general bacteria in the raw water were removed in the water purification section 9, and calcium glycerophosphate and the like were dissolved in the calcium supply section 11 through the flow rate sensor 10 and processed into water that was easily electrolyzed. Thereafter, water is passed through the check valve 12 to the electrolytic cell 13. At this time, the electromagnetic valve 24 (for washing water drainage) is closed, and no water flows through the water pipe 26 via the electromagnetic valve 24.

After the flow of water, the flow rate detecting section 22 in the control means 22
1 reads the signal of the flow rate sensor 10, and when the flow rate level exceeds a certain level, judges that the state is water passing.

At this time, based on the setting of the operation display section 32, the MPU 220 outputs an operation command to the electrolysis control section 223 so that the polarity is switched so that the electrode plate 15 becomes a cathode in order to perform electrolysis by the electrolysis tank 13. And at the same time solenoid valve 1
8 is output to the solenoid valve control unit 224 to open.
Thereby, the electrolysis controller 223 applies a voltage to the electrode plates 15 and 16 so that the electrode plate 15 becomes a cathode, and
Alkaline ionized water is generated in the cathode chamber, and acidic ionized water is generated in the anode chamber.

The generated alkaline ionized water is supplied to the check valve 3
3. The water is discharged from the water discharge pipe 6 through the water pipe 17, and part of the water is discharged through the check valve 29 and the water pipe 26.
It is led to 5. The pH value of the generated ionic water is immediately fed back by the pH sensor 25 and the pH measuring means 225, and the electrolysis output is operated by the electrolysis control unit 223 to control the pH value so as to approach the target pH value.

When the faucet 3 is closed, the control means 22 determines that the flow of water is completed based on a signal from the flow rate sensor 10, stops electrolysis, and closes the solenoid valve 18. Some time after the control means 22 determines that the water flow has ended (in the first embodiment, about 10
After a second), the control means 22 drives the air pump 27. When the air pump 27 is driven, the air purified by the air filter 30 is passed through the check valve 28 to the water pipe 26.
Sent to. At this time, the check valve 29 is closed by the air pressure of the air pump 27, and the solenoid valve 24 and the solenoid valve 1 are closed.
Since 8 is closed, the water in the water pipe 26, the pH sensor 25, the water pipe 31 and the auxiliary water pipe 19 is discharged to the outside from the auxiliary water pipe 19 by the air pressure of the air pump 27. The air pump 27 is driven and stopped for a time (about 15 seconds in the first embodiment) during which the water in the water pipe 26, the water pipe 31 and the auxiliary water pipe 19 is discharged.

Here, the water in the water pipe 6 and the water pipe 17 is supplied to the water pipe 26 through the check valve 29 because of the check valve 33.
Will not flow into

As a result, since the sensor section of the pH sensor 25 is in the air, the potassium chloride (K
Cl) can be prevented from flowing out.

At this time, stagnant water remains in the electrolytic cell 13. Further, the control means 22
When the deposit such as a scale made of Ca, Mg or the like adheres to the electrode plate surface, when the alkali ion water conditioner 8 is in the water stopping state, the water pipe 2 is operated in the same manner as in the above water stopping operation.
6. The water in the water pipe 31 and the auxiliary water pipe 19 is discharged. At that time, since the retained water remains in the electrolytic cell 13, the polarity is reversed and applied to dissolve the scale and the like into the electrolytic water to clean the electrode plate. Here, when the electrode plate 15 becomes acidic ionized water, the washing is completed, and the electromagnetic valves 24 and 18 are opened, so that the acidic ionized water on the electrode plate 15 side flows into the pH sensor 25 as it is, The sensor section of the sensor 25 is immersed in the acidic ion water. At this time, dirt such as Ca adhered to the sensor unit can be removed.

When the drainage of the electrolytic cell 13 is completed, the solenoid valves 24 and 18 are closed, and the water in the water pipe 26, the water pipe 31 and the auxiliary water discharge pipe 19 is discharged by the same operation as at the time of the above-mentioned water stoppage. I do.

Next, the operation of the alkali ion water conditioner 8 for generating acidic ion water will be described below.

The user operates the pH setting section 32 of the operation display section 32.
Using “0”, a predetermined concentration level according to the purpose of use is selected and set “example pH 5.5”. At this time,
Whether the density level has been set can be confirmed by the density level display lamp 321. At the same time, the pH value of the concentration level set in the pH value display section 323 is digitally displayed. If the user wants to change the digitally displayed pH value, he or she can press the plus or minus button of the pH fine adjustment unit 324 to make the adjustment. After this, faucet 3
Is opened, the raw water passed through the faucet 3 is supplied to the raw water supply pipe 4.
Then, impurities such as residual chlorine odor and general bacteria in the raw water were removed in the water purification section 9, and calcium glycerophosphate and the like were dissolved in the calcium supply section 11 through the flow rate sensor 10 and processed into water that was easily electrolyzed. Thereafter, water is passed through the check valve 12 to the electrolytic cell 13. At this time, the electromagnetic valve 24 (for washing water drainage) is closed, and no water flows through the water pipe 26 via the electromagnetic valve 24.

After the flow of water, the flow rate detector 22 in the control means 22
1 reads the signal of the flow rate sensor 10, and when the flow rate level exceeds a certain level, determines that the state is water passing.

At this time, based on the setting of the operation display section 32, the MPU 220 outputs an operation command to the electrolysis control section 222 so that the polarity is switched so that the electrode plate 15 becomes the anode in order to perform the electrolysis by the electrolytic cell 13. And at the same time solenoid valve 1
8 is output to the solenoid valve control unit 224 to open.
Thereby, the electrolysis controller 223 applies a voltage to the electrode plates 15 and 16 so that the electrode plate 15 becomes an anode, and
Alkaline ionized water is generated in the cathode chamber, and acidic ionized water is generated in the anode chamber.

The generated acidic ionized water is discharged from the water discharge pipe 6 through the check valve 33 and the water pipe 17, and a part thereof is guided to the pH sensor 25 through the check valve 29 and the water pipe 26. The pH value of the generated ionic water is measured by the pH sensor 2
5. Immediately fed back by the pH measurement means 225, the electrolysis output is operated by the electrolysis control unit 223, and control is performed so as to approach the target pH value.

At this time, since the acidic ionic water generated by the electrode plate 15 passes through the sensor section of the pH sensor 25,
Dirt such as Ca attached to the sensor unit can be removed. The water that has passed through the pH sensor 25 passes through the water pipe 31 and is discharged from the auxiliary water discharge pipe 19.

When the faucet 3 is closed, the control means 22 determines that the passage of water is completed based on a signal from the flow rate sensor 10, stops the electrolysis, and closes the solenoid valve 18. Some time after the control means 22 determines that the water flow has ended (in the first embodiment, about 10
After a second), the control means 22 drives the air pump 27. When the air pump 27 is driven, the air purified by the air filter 30 is passed through the check valve 28 to the water pipe 26.
Sent to. At this time, the check valve 29 is closed by the air pressure of the air pump 27, and the solenoid valve 24 and the solenoid valve 1 are closed.
Since 8 is closed, the water in the water pipe 26, the pH sensor 25, the water pipe 31 and the auxiliary water pipe 19 is discharged to the outside from the auxiliary water pipe 19 by the air pressure of the air pump 27. The air pump 27 is driven and stopped for a time (about 15 seconds in the first embodiment) during which the water in the water pipe 26, the water pipe 31 and the auxiliary water discharge pipe 19 is discharged.

Since the water in the water pipe 31 and the water pipe 17 has a check valve 33, the water in the water pipe 2 is passed through the check valve 29.
It does not flow into 6.

As a result, since the sensor section of the pH sensor 25 is in the air, the potassium chloride (K
Cl) can be prevented from flowing out.

At this time, stagnant water remains in the electrolytic cell 13. Further, the control means 22
When the deposit such as a scale made of Ca, Mg or the like adheres to the electrode plate surface, when the alkali ion water conditioner 8 is in the water stopping state, the water pipe 2 is operated in the same manner as in the above water stopping operation.
6. The water in the water pipe 31 and the auxiliary water pipe 19 is discharged. At that time, since the retained water remains in the electrolytic cell 13, the polarity of the voltage is reversed and applied, and the scale and the like are eluted in the electrolytic water to wash the electrode plate 15. Here, when the electrode plate 15 becomes alkaline ionized water, the electromagnetic valve 24 and the electromagnetic valve 18 remain closed even after the cleaning is completed, and the water remaining in the electrolytic cell 13 does not drain downward. The water retained in the electrolytic tank 13 is discharged from the water discharge pipe 6 and the auxiliary water discharge pipe 19 at the next water flow.

In the first embodiment, the water pipe 31 is connected to the auxiliary water pipe 19 to discharge the drainage from the auxiliary water pipe 19. However, the water pipe 31 is directly above the sink of the sink. Up to a dedicated outlet for drainage.

In the first embodiment, the built-in type alkali ion water conditioner is used. However, an alkali ion water conditioner other than the built-in type water conditioner may be used.

[0064]

As is apparent from the above description, according to the alkali ion water purifier of the present invention, the pH value of the ionic water is measured by the pH measuring means and the feedback control is performed.
Ion water having a stable pH can be discharged. Further, since air is injected into the water passage to the sensor section of the pH measuring means, the outflow of an internal solution such as potassium chloride (KCl) of the pH sensor can be prevented, and the life of the pH sensor can be extended. Furthermore, since the pH sensor is cleaned using acidic ionized water generated during cleaning in the electrolytic cell, the pH sensor is cleaned.
The sensitivity of the sensor can be maintained.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a built-in type alkali ion water purifier according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of an operation display unit in the alkali ion water purifier.

FIG. 3 is a control block diagram of the alkali ion water conditioner.

FIG. 4 is a schematic configuration diagram of a conventional built-in type alkali ion water purifier.

FIG. 5 is a schematic diagram of an operation display unit in the alkali ion water conditioner.

FIG. 6 is a control block diagram of the alkali ion water conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Raw water pipe 2 Dedicated water tap for water purifier 3 Water tap 4 Raw water supply pipe 5 Water supply pipe connection joint 6 Water discharge pipe 7 Water discharge pipe connection joint 8 Alkaline ion water purifier 9 Water purification unit 10 Flow rate sensor 11 Calcium supply unit 12 Check valve 13 Electrolyzer 14 Diaphragm 15 Electrode plate 16 Electrode plate 17 Water flow pipe 18 Solenoid valve (for acid water stoppage) 19 Auxiliary water discharge pipe 20 Power supply plug 21 Power supply unit 22 Control means 23 Operation display unit 24 Electromagnetic valve (for washing water drainage) ) 25 pH sensor 26 water pipe 27 air pump 28 check valve 29 check valve 30 air filter 31 water pipe 32 operation display section 33 check valve 220 MPU (microprocessor unit) 221 flow rate detection section 222 operation display control section 223 Electrolysis controller 224 Solenoid valve controller 225 pH measuring means 226 Air pump controller 30 mode selection button 231 generates the alert section 232 pH adjustment button 233 cleaning notification section 234 alarm buzzer 320 pH setting unit 321 concentration level display lamp 322 generates notification unit 323 pH value display unit 324 pH fine adjustment section 325 cleaning notifying section 326 alarm buzzer

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI C02F 1/66 540 C02F 1/66 540E

Claims (4)

[Claims] 1. An electrolytic cell for producing alkaline ionized water and acidic ionized water, a pH measuring means for said ionized water, and a value measured by said pH measuring means fed back so that the ionized water maintains a predetermined pH value. An alkali ion water purifier comprising a control means. 2. The alkaline ion water supply according to claim 1, wherein the pH measuring means has a sensor section and a water passage to the sensor section, and comprises an air pump for injecting air into the water passage. vessel. 3. The sensor unit of the pH measuring means is disposed below the electrolytic cell, and is provided with a water channel and a valve mechanism for guiding acidic ionized water generated during washing of the electrolytic cell to the sensor unit. The alkali ion water conditioner according to claim 2. 4. The alkali ion water conditioner according to claim 2, wherein the air pump is provided with an antibacterial air filter for preventing foreign matter from entering the suction port.