JPH0564785A - Method and apparatus for conditioning electrolytic ion water - Google Patents

Abstract

PURPOSE:To hold the pH value of alkali ion water to a pH set value. CONSTITUTION:A pH set value is inputted to a control circuit 27 from a pH setting input circuit 25. The control circuit 27 controls a DC constant voltage and current power supply circuit 22 to set the load currents and load voltages of positive and negative electrodes 1a, 1b to the values corresponding to the pH set value. Raw water is electrolyzed in an electrolytic cell 1 to prepare alkali ion water and acidic water. The pH value of the alkali ion water is detected by a pH sensor 13 to be inputted to the control circuit 27 through a pH detection circuit 24. The control circuit 27 compares this pH value with the pH set value and controls the DC constant voltage and current power supply circuit 22 corresponding to the deviation thereof. By this constitution, the pH value of alkali ion water is held to the pH set value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic ionic water conditioning method and apparatus for electrolyzing raw water such as tap water to generate electrolytic alkaline ionized water and electrolytic acidic water, and particularly to a method of setting a pH value. TECHNICAL FIELD The present invention relates to an electrolytic ion water conditioning method and an apparatus therefor capable of stably obtaining electrolyzed water.

[0002]

2. Description of the Related Art Conventionally, a direct current voltage is applied between electrodes in an electrolytic cell, and raw water such as tap water is supplied to the electrolytic cell to electrolyze the raw water to generate alkaline ionized water and acidic water. Generally, the electrolytic ion water conditioner is used.

By the way, in this type of electrolytic ion water conditioning apparatus, alkaline ionized water containing alkaline ions such as sodium ions, potassium ions, magnesium ions, etc. is collected on the negative electrode side of the electrolytic cell, and on the positive electrode side. Acidic water is collected. Then, the alkaline ionized water is supplied to drinking water, and the acidic water is used as water for lotion and noodle making. Therefore, the pH value of these electrolyzed water is
It is always required to be stable.

However, due to a change in the amount of raw water supplied to the electrolytic cell, that is, a change in the amount of electrolyzed water used, adhesion of impurities such as calcium to the electrodes, and a change in the quality of the raw water, there is a problem There is a problem that the pH value of the obtained electrolyzed water changes even if the supply current or voltage to the device is constant.

Conventionally, regarding adhesion of impurities to electrodes,
For example, as shown in Japanese Utility Model Publication No. 63-10872, the polarity of the electrodes is periodically reversed to perform cleaning so that electrolyzed water having a desired pH value can be obtained.

[0006]

In the above-mentioned conventional method, electrolysis-produced water having a desired pH value can be obtained immediately after washing, but the amount of deviation from the set value increases with the lapse of time after washing, resulting in a large amount of electrolysis. It is impossible to keep the pH value of the produced water constant.

As a method of solving this, it is possible to increase the number of times of cleaning, but since the electrolytically generated water cannot be used during cleaning, the usability becomes extremely poor, and in reality, it takes 24 hours. There is a limit of about one wash.

Further, even if the number of times of washing is increased to prevent the pH fluctuation due to the adhesion of impurities to the electrode, the pH fluctuation due to the change of the amount of electrolyzed water used or the change of the raw water quality is prevented. There is a problem that you cannot do it.

The present invention has been made in view of the above situation, and even if the amount of electrolyzed water used changes, or impurities such as calcium adhere to electrodes, or the quality of raw water changes, It is an object of the present invention to provide an electrolytic ion water leveling method and an apparatus therefor capable of stably obtaining electrolyzed water having a set pH value.

[0010]

Means for Solving the Problems The electrolytic ion water conditioning method according to the present invention is, as a means for achieving the above object, a raw water supplied to an electrolytic cell by applying a DC voltage between electrodes in the electrolytic cell. In the electrolytic ion water conditioning method in which alkaline electrolyzed water and acidic electrolyzed water are electrolyzed, the pH value of the electrolyzed water is detected and the detected p
It is characterized in that the H value is compared with a preset pH set value, and the electric power supplied between the electrodes is controlled by the deviation signal thereof.

The electrolytic ion water conditioning apparatus according to the present invention, as a means for achieving the above object, electrolyzes the raw water supplied to the electrolytic cell by applying a DC voltage between the electrodes in the electrolytic cell. In an electrolytic ionic water conditioner that generates alkaline ionized water and acidic electrolyzed water, a power supply unit that supplies power between the electrodes, a pH detection unit that detects a pH value of the electrolytically generated water, and a pH set value are set. pH setting means, comparing means for comparing the pH value from the pH detecting means with the pH setting value from the pH setting means, and the power feeding means based on the deviation signal from the comparing means to control the power supplied between the electrodes. A control means for controlling is provided respectively.

Further, in the electrolytic ion water conditioning apparatus according to the present invention, it is more preferable that the pH detecting means selectively detects either the alkaline ionized water or the acidic water.

[0013]

In the electrolytic ion water conditioning method according to the present invention,
The pH value of the electrolyzed water is detected, and this pH value is compared with a preset pH set value. Then, the deviation signal controls the electric power supplied between the electrodes.

By the way, the pH value of alkaline ionized water or acidic water changes according to the change of the load current or load voltage supplied between the electrodes. However,
The change in the pH value of the alkaline ionized water or the acidic water is not directly proportional to the change in the load current or the load voltage. Therefore, even if the load current or the load voltage is changed in direct proportion to the amount of change of the factor that changes the pH value of the electrolytically generated water, the pH value cannot be maintained at the set value.

However, in the present invention, the pH value of the electrolyzed water is directly detected, this pH value is compared with the pH set value, and the deviation signal controls the power supplied between the electrodes. Thus, it becomes possible to stably obtain the electrolyzed water having the set pH value.

Further, in the electrolytic ion water preparation apparatus according to the present invention, the pH value of the electrolytically generated water is detected by the pH detecting means, and the pH setting value is set by the pH setting means. To be done. And
The power supply means is controlled by the control means based on the deviation signal from the comparison means, and the power supply between the electrodes is controlled. Therefore, even if the pH value changes due to any factor, it is possible to stably obtain the electrolyzed water having the set pH value.

Further, in the electrolytic ion water conditioning apparatus according to the present invention, when the alkaline ionized water is required, the pH detecting means selectively detects either alkaline ionized water or acidic water. It becomes possible to detect the pH of the alkaline ionized water or the acidic water when the acidic water is required, and it becomes possible to maintain the required pH value of the electrolyzed water at the set value.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of an electrolytic ion water conditioning apparatus according to the present invention. In the figure, reference numeral 1 is a positive electrode 1a and a negative electrode 1.
and a direct current voltage is applied between the electrodes 1a and 1b by the power feeding means 2. Then, by applying this DC voltage, the electrolytic cell 1
The raw water 3 supplied to the is electrolyzed to generate electrolyzed water 4 of alkaline ionized water 4a and acidic water 4b.

As shown in FIG. 1, the pH value of the alkaline ionized water 4a is detected by the pH detecting means 5, and the pH value detected by the pH detecting means 5 is the pH setting means. The pH set value set in 6 is input to the comparison means 7 and compared, and the deviation between the two is obtained. Then, this deviation signal is input to the control means 8.

As shown in FIG. 1, the control means 8 outputs a control signal to the power feeding means 2 on the basis of the deviation signal from the comparison means 7, and a direct current supplied between the electrodes 1a and 1b. Alternatively, at least one of the DC voltage is controlled.

FIG. 2 shows a piping system of the electrolytic ion water conditioning apparatus according to this embodiment. In the figure, reference numeral 1 is an electrolytic cell, and the electrolytic cell 1 contains raw water 3 such as tap water. After being purified by a water purifier 10 containing a purifying material such as charcoal filter, it is supplied through an upper valve 11a of a two-stage flow SW11. Then, the raw water 3 is electrolyzed in the electrolytic cell 1.

As shown in FIG. 2, the alkaline ionized water 4a produced by electrolysis of the raw water 3 is designed to be sent to the water intake via the on-off valve 12, and the pH value of this alkaline ionized water 4a is set. Is detected by the pH sensor 13. The pH sensor 13 may be of any type as long as it can detect the pH value of the alkaline ionized water 4a in the form of finally converting it into an electric signal. For example, an electrode type pH meter is used. It has become.

On the other hand, the acidic water 4b produced by the electrolysis of the raw water 3 is, as shown in FIG.
The two-stage flow SW11 is configured to be sent to the drainage port through the lower valve 11b of the reference numeral 11, for example.
It has the same configuration as that disclosed in Japanese Patent Laid-Open No. 3-266281.

That is, the flow SW11 detects the flow of the raw water 3 on the outlet side of the upper valve 11 due to the opening of the opening / closing valve 12, both valves 11a and 11b are simultaneously opened, and a built-in switch is provided. (Not shown) is closed so that a DC voltage is applied between the electrodes 1a and 1b (see FIG. 1) of the electrolytic cell 1, and the upper side of the open / close valve 12 is closed. When the stagnation of the raw water 3 on the outlet side of the valve 11a is detected, both valves 1
1a and 11b are closed at the same time, and the built-in switch is opened to cut off the power supply to the electrodes 1a and 1b of the electrolytic cell 1.

FIG. 3 shows a control circuit of the electrolytic ion water preparation apparatus according to this embodiment. In the figure, reference numeral 1 is an electrolytic cell, and the positive electrode 1a and the negative electrode arranged in the electrolytic cell 1 are arranged. Electric power from the AC power supply 20 is supplied to the electrode 1b by the power supply circuit 2
1. DC constant voltage constant current power supply circuit 22 and reverse power circuit 23
It is designed to be supplied via. The polarities of the electrodes 1a and 1b are reversed by switching the reverse electric circuit 23, and the electrodes 1a and 1b are cleaned.

On the other hand, the pH value of the alkaline ionized water 4a (see FIG. 2) produced in the electrolytic cell 1 is p as shown in FIG.
It is detected by the H sensor 13, and this pH
The pH value detected by the sensor 13 is converted into an electric signal by the pH detection circuit 24, and then is sent to the control circuit 27 together with the pH set value from the pH setting input circuit 25 and the flow SW signal from the flow SW input circuit 26. It is supposed to be entered.

This control circuit 27, as shown in FIG.
By inputting the flow SW closing signal from the flow SW input circuit 26, the DC constant voltage constant current power supply circuit 22 is controlled based on the pH set value from the pH setting input circuit 25, and the electrode 1
The load current or load voltage of a and 1b is controlled, and the pH set value and pH detection circuit 2
The pH value from 4 is compared, and the load current or load voltage is adjusted by the deviation signal.

As shown in FIG. 3, the control circuit 27 is adapted to output a control signal to the output circuit 28 in response to the input of the flow SW closing signal from the flow SW input circuit 26. The circuit 28 is the reverse circuit 23.
On the other hand, a normal rotation signal (electrolysis signal) or a reverse rotation signal (cleaning signal) is output, and these notification signals are output to the display circuit 29.

Next, the electrolytic ion water leveling method in this embodiment will be described. In use, first, the pH setting input circuit 25 sets the pH setting value of the alkaline ionized water 4a. Usually, the pH set value is preferably set to a predetermined value of 8 or more. The pH setting value is input from the pH setting input circuit 25 to the control circuit 27.

In this state, when the on-off valve 12 shown in FIG. 2 is opened, both valves 11a and 11b of the flow SW11 are opened and the switch built in the flow SW11 is closed. Then, the flow SW closing circuit 26 shown in FIG. 3 inputs the flow SW closing signal to the control circuit 27, and the control circuit 27 outputs the control signal to the DC constant voltage constant current power supply circuit 22. Thereby, the electrodes 1a, 1b
The load current and load voltage are controlled to predetermined values according to the pH set value.

On the other hand, the pH value of the alkaline ionized water 4a is
The pH value detected by the pH sensor 13 shown in FIG. 2 and FIG. 3 is input to the control circuit 27 via the pH detection circuit 24. The control circuit 27 compares this pH value with the pH set value and obtains the deviation. Then, a control signal corresponding to this deviation is output to the DC constant voltage constant current power supply circuit 22. As a result, the load current or load voltage of the electrodes 1a, 1b is adjusted so that the deviation becomes zero, and as a result, the pH value of the alkaline ionized water 4a is maintained at the pH set value.

The inventor of the present invention supplied alkaline raw water of 6.0 liter / min, acidic water by supplying raw water having a water supply pressure of 0.5 kg / cm ² , a water supply amount of 8.7 liter / min and a pH value of 6.70. An experiment was conducted to examine changes in pH values of alkaline ionized water and acidic water when the load current and the load voltage were changed using an alkaline ionized water device capable of obtaining 2.7 liter / min of water. And the following data were obtained.

Load current Load voltage Alkaline ion water Acidic water DC (A) DC (V) pH value pH value 2.2 9.0 7.25 6.25 5.0 16.0 7.45 4.75 12. 0 34.0 9.48 3.31 18.0 46.0 9.60 3.15 21.2 53.0 9.85 3.10

As is clear from the above data, it is understood that the pH value of the alkaline ionized water and the acidic water can be changed by changing the load current and the load voltage. However, the rate of change of both is not directly proportional, and
The rate of change of pH value of alkaline ionized water and the rate of change of pH value of acidic water are not inversely proportional. Therefore, even if the deviation of the pH value of the alkaline ionized water from the set value is visually checked and the manual control is performed so that the deviation is eliminated, the control is not always easy.

However, in this embodiment, since the control circuit 27 automatically controls the pH value of the alkaline ionized water, the pH value of the alkaline ionized water is always maintained at the set value regardless of the cause of the change. be able to.

In the above embodiment, the case where only the pH value of the alkaline ionized water 4a is detected has been described. However, in the device which positively utilizes only the acidic water 4b, only the pH value of the acidic water is detected. You can do it.
Further, in the device for both purposes, the pH of the alkaline ionized water 4a or the acidic water 4b is adjusted according to the electrolytically generated water 4 used.
The value may be selectively detected.

In the above embodiment, the control circuit 27 controls the DC constant voltage / constant current power supply circuit 22 to facilitate control. However, the electrodes 1a, 1
For example, the power supply circuit 21 may be controlled as long as the power supplied to b can be controlled. Also, load current and load voltage do not necessarily need to control both,
Only one of them may be controlled.

[0038]

As described above, the electrolytic ion water conditioning method according to the present invention detects the pH value of electrolyzed water, compares this pH value with a preset pH set value, and deviates the deviation. Since the electric power supplied between the electrodes is controlled by the signal, what factor causes the p
Even if the H value changes, the electrolyzed water having the set pH value can be stably obtained.

Further, the alkaline ionized water device according to the present invention has a pH value of electrolyzed water detected by the pH detection means,
The pH setting value set by the pH setting means is compared by the comparing means to obtain the deviation, and the power feeding means is controlled by the control means based on the deviation signal to control the electric power supplied between the electrodes. So what factors cause the pH of electrolyzed water
Even when the value changes, the deviation of the pH value from the set pH value is corrected, and the electrolyzed water having the set pH value can be stably obtained.

In the electrolytic ion water preparation apparatus according to the present invention, when the alkaline ionized water is used by selectively detecting either the alkaline ionized water or the acidic water by the pH detecting means. Is alkaline ionized water, or if acidic water is used, acid water p
It becomes possible to detect H, and the required pH value of electrolyzed water can be maintained at a set value.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an alkaline ionized water device according to an embodiment of the present invention.

FIG. 2 is a system diagram showing a piping system of the apparatus shown in FIG.

FIG. 3 is an electric circuit block diagram showing a control circuit of the apparatus of FIG.

[Explanation of symbols]

1 ... Electrolyzer, 1a ... Positive electrode, 1b ... Negative electrode, 2 ...
Power feeding means, 3 ... Raw water, 4 ... Electrolyzed water, 4a ... Alkaline ionized water, 4b ... Acidic water, 5 ... pH detecting means, 6 ... pH setting means, 7 ... Comparison means, 8 ... Control means.

Claims (3)

[Claims] 1. A method for electrolytic ion water conditioning, in which a direct voltage is applied between electrodes in an electrolytic cell to electrolyze raw water supplied to the electrolytic cell to generate alkaline ionized water and acidic electrolytic water. The electrolysis characterized by detecting the pH value of the electrolyzed water, comparing the detected pH value with a preset pH set value, and controlling the supply power between the electrodes by the deviation signal thereof. Ion water conditioning method. 2. An electrolytic ionic water conditioner for electrolyzing raw water supplied to an electrolytic cell to generate alkaline ionized water and acidic electrolytic water by applying a DC voltage between electrodes in the electrolytic cell, Power supply means for supplying power between the electrodes,
PH detection means for detecting the pH value of the electrolyzed water, p
The pH setting means for setting the H set value, the comparing means for comparing the pH value from the pH detecting means with the pH setting value from the pH setting means, and the feeding means based on the deviation signal from the comparing means to control the electrode. And a control means for controlling the electric power supplied to the electrolytic ionization water conditioner. 3. The electrolytic ion water conditioning apparatus according to claim 2, wherein the pH detecting means selectively detects the pH value of either alkaline ionized water or acidic water.