JP3297828B2 - Electrolyzed water generator and method for controlling chloride ion concentration in the electrolyzed water generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic water generator for producing an acidic ionized water and an alkaline ionized water which are used as sterilizing washing water by adding a NaCl solution to raw water such as tap water or well water and electrolyzing the same, and an electrolytic water generator therefor. The present invention relates to a method for controlling a chlorine ion concentration in an electrolyzed water generator.

[0002]

2. Description of the Related Art In recent years, as static germicidal treatments in the fields of food processing, agriculture, sewage treatment, medical treatment, etc., instead of heat treatment, alcohol treatment, treatment with synthetic chemicals such as pesticides, Japanese Patent Application Laid-Open No. Sho 62-1493. The use of electrolyzed electrolyzed water that can be used safely and at low cost for the human body as shown in the gazette is increasing.

Hereinafter, a conventional electrolyzed water generator will be described. FIG. 2 is a block diagram of a conventional electrolytic water generator to which a NaCl solution is added. In FIG. 2, 1 is a raw water pipe such as tap water, 2 is a faucet, 3a is an electrolyzed water generator connected to the raw water pipe 1 via a faucet 2, 4 is a solenoid valve, 5 is a NaCl solution storage tank, Reference numeral 6 denotes an electromagnetic metering pump unit for mixing NaCl solution with raw water, 7 a flow rate sensor for detecting the flow rate, 8 an electrolytic cell for electrolyzing the NaCl mixed water passed through the flow rate sensor 7, and 9 an electrolytic cell 8. Separating membranes forming a pair of electrode chambers, 10 and 11 are electrodes arranged in each of the electrode chambers formed by dividing the membrane 9 into two, 12 is a water supply pipe for supplying raw water to the electromagnetic metering pump section 6, 13 is N from the electromagnetic metering pump unit 6
a water supply pipe for supplying aCl mixed water to the flow rate sensor 7; a water supply pipe 14 for supplying mixed water from the flow rate sensor 7 to the electrolytic cell 8;
Reference numeral 15 denotes an anode-side discharge pipe for discharging the acidic ionized water electrolyzed in the electrolytic cell 8, 16 denotes a cathode-side discharge pipe for discharging the alkaline ionized water electrolyzed in the electrolytic cell 8, and 17 denotes the electrolytic cell 8 and the anode-side. A fixed restrictor for adjusting discharge water, which is arranged near the discharge pipe joint to efficiently generate alkaline ionized water and acidic ionized water, 18a detects the amount of flow through the flow rate sensor 7, and the electromagnetic valve 4 and the electromagnetic metering pump 6 , A power supply unit 19 for supplying power required for the electrolyzed water generator 3a, and a water switch 20 for starting the operation of the electrolyzed water generator 3a.

The operation will be described below. Normally, when the user keeps the faucet 2 open at all times and presses the water flow switch 20 during use, the solenoid valve 4 opens and raw water is supplied to the electrolyzed water generator 3a. The controller 18a, which detects supply of raw water by the flow sensor 7, controls the electromagnetic metering pump 6 and applies voltage to the electrodes 10, 11 of the electrolytic cell 8 to perform electrolysis.
A positive voltage is applied to the electrode 10, a negative voltage is applied to the electrode 11, and the electrolytic cell 8 forms an anode chamber and a cathode chamber separated by a diaphragm 9. In the anode chamber, acidic ionized water is generated. Produces alkaline ionized water.

[0005]

In such a configuration of the conventional electrolyzed water generator 3a, it is necessary to control the concentration of the NaCl solution, which causes factors such as changes in raw water conditions, equipment failure, and human error. In this case, there is a problem that a desired chlorine ion concentration cannot be obtained.

An object of the present invention is to solve the above-mentioned conventional problems, and it is an object of the present invention to stably maintain acidic ion water at a target chlorine ion concentration.

[0007]

In order to achieve this object, an electrolyzed water generator according to the present invention comprises: an electromagnetic metering pump section for mixing raw water and a NaCl solution according to an instruction from a controller section;
It has a flow rate sensor that detects the flow rate, and an electrolytic cell that electrolyzes the NaCl mixed water that has passed through the flow rate sensor, and supplies a raw water conductivity sensor to the water supply pipe that supplies raw water to the electromagnetic metering pump unit. The water supply pipe for supplying the NaCl mixed water to the electrolytic cell is provided with a conductivity sensor for NaCl mixed water, and the discharge pipe on the anode side of the electrolytic cell is provided with a conductivity sensor for acidic ionic water.

Further, a salt concentration meter is provided in place of the conductivity sensor for NaCl mixed water.

[0009]

According to the present invention, in the above configuration, the controller reads the conductivity of each conductivity sensor of raw water, NaCl mixed water, and acidic ionized water, and based on the data and the data of the flow rate sensor, the controller detects the desired chlorine. The control of the electromagnetic metering pump unit for mixing the NaCl solution and the control of the voltage applied to the electrolytic cell are performed so that the ion concentration is attained. As a result, acidic ionized water is obtained in which the chlorine ion concentration of the water discharged from the anode side of the electrolytic cell is maintained near the target value.

[0010]

An embodiment of the present invention will be described below with reference to FIG. The same components as those described in the conventional example are denoted by the same reference numerals, and description thereof is omitted. FIG. 1 is a block diagram of an electrolyzed water generator according to one embodiment of the present invention. As shown in FIG. 1, 3 is an electrolyzed water generator of one embodiment of the present invention, 18 is a controller for controlling the operation of the electrolyzed water generator 3, 21 is attached to the water supply pipe 12, and controls the conductivity of the raw water. A conductivity sensor for raw water that detects and sends data to the controller unit 18. A sensor 22 detects the conductivity of the NaCl mixed water and sends data to the controller unit 18.
The conductivity sensor 23 for Cl mixed water is a conductivity sensor for acidic ionized water that detects the conductivity of water discharged from the anode side of the electrolytic cell and sends data to the controller 18.

The operation of the electrolyzed water generator 3 configured as described above will be described. Electrolyzed water generator 3 is usually
It is connected to raw water pipes such as water supply. Normally, when the user opens the faucet 2 and presses the water flow switch 20 when necessary, the solenoid valve 4 is opened by the instruction of the controller 18 to supply the raw water.
Raw water is supplied to the electromagnetic metering pump unit 6 through the water supply pipe 12. At this time, the conductivity of the raw water is measured by the raw water conductivity sensor 21 attached to the water supply pipe 12.
8 reads. Raw water supplied to the electromagnetic metering pump unit 6 is supplied to the flow rate sensor 7 through the water supply pipe 13. Controller unit 1 that detects supply of raw water by flow sensor 7
In step 8, the NaCl solution is mixed with the raw water under the control of the electromagnetic metering pump unit 6, and a voltage is applied to the electrodes 10 and 11 of the electrolytic cell 8 to perform electrolysis. A positive voltage is applied to the electrode 10, a negative voltage is applied to the electrode 11, the electrolytic cell 8 forms an anode chamber and a cathode chamber separated by a diaphragm 9, and acidic ion water is generated in the anode chamber, and the cathode chamber is formed. Produces alkaline ionized water. The raw water flow stability after the controller unit 18, mounted on the water supply pipe 14 and the anode side discharge pipe 15 Na
The conductivity sensor 22 for Cl mixed water and the conductivity sensor 23 for acidic ionic water read the conductivity of the NaCl mixed solution and the acidic ionic water, and perform feedback control of the chloride ion concentration.

In this embodiment, the conductivity sensor was used because the conductivity of chlorine ion concentration was substituted for the conductivity.
NaCl mixed water conductivity sensor 22 attached to 4
The same control as above can be performed by using a salt concentration meter instead of.

[0013]

As is apparent from the above description, according to the present invention, a plurality of conductivity sensors are mounted on the water flow path of the electrolyzed water generator, and the chlorine ion concentration is measured in each section of raw water, NaCl mixed water and acidic ionic water. By controlling the supply amount of the NaCl solution by detecting in the above, the chlorine ion concentration of the acidic ionized water can be maintained at a target value without being affected by artificial and other external factors. is there.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electrolyzed water generator according to one embodiment of the present invention.

FIG. 2 is a block diagram of a conventional electrolyzed water generator.

[Explanation of symbols]

 Reference Signs List 3 Electrolyzed water generator 6 Electromagnetic metering pump section 7 Flow rate sensor 8 Electrolytic tank 12, 13, 14 Water supply pipe 15 Anode side discharge pipe 18 Controller section 21 Conductivity sensor for raw water 22 Conductivity sensor for mixed NaCl water 23 For acid ion water Conductivity sensor

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) C02F 1/46-1/469

Claims (5)

(57) [Claims] A flow rate sensor for detecting a 1. A communication amount of water, the have electrolysis of the electrolytic bath of NaCl mixed water having passed through the flow sensor, the raw water Conductivity in feed water pipe for supplying raw water to the electromagnetic metering pump unit the sensor, a conductivity sensor for NaCl mixed water supply water pipe for supplying NaCl mixed water to the electrolytic cell from the flow sensor comprises a conductivity sensor for acidic ionized water to the anode side discharge pipe of the electrolytic cell, the conductivity for the raw water Sensor and NaCl
The conductivity of three sensors, a conductivity sensor for mixed water and a conductivity sensor for acidic ionic water, is read, and raw water and N are detected based on the conductivity data and water flow detection by the flow rate sensor.
An electrolyzed water generator comprising a controller for controlling the electromagnetic metering pump for mixing an aCl solution. 2. The electrolyzed water generator according to claim 1, wherein the conductivity data of the raw water conductivity sensor, the conductivity data of the NaCl mixed water conductivity sensor, and the water flow detection of the flow rate sensor are used. A chloride ion concentration control method in which an electromagnetic metering pump unit is controlled via a controller unit so that the chloride ion concentration of the NaCl mixed water supplied to the electrolytic cell becomes an optimum condition. 3. A raw water conductivity is provided in a water supply pipe which has a flow rate sensor for detecting a flow rate of water and an electrolytic cell for electrolyzing NaCl mixed water passing through the flow rate sensor, and which supplies raw water to an electromagnetic metering pump section. The sensor is provided with a salt concentration meter in a water supply pipe that supplies NaCl mixed water from the flow rate sensor to the electrolytic cell, and a conductivity sensor for acidic ion water in an anode side discharge pipe of the electrolytic cell,
The conductivity data of the raw water conductivity sensor, the concentration data of the salt concentration meter, and the conductivity data of the acid ion water conductivity sensor are read, and the conductivity data, the concentration data, and the flow detection by the flow rate sensor are used as a basis. Raw water and NaCl
An electrolyzed water generator comprising a controller for controlling the electromagnetic metering pump for mixing a solution. 4. The electrolyzed water generator according to claim 3, wherein the electrolysis is performed based on the conductivity data of the conductivity sensor for raw water, the concentration data obtained by the salinity meter of the NaCl mixed water, and the flow detection of the flow rate sensor. A method for controlling the concentration of chloride ions, wherein the electromagnetic pump is controlled via a controller so that the concentration of chloride ions in the NaCl mixed water supplied to the tank is optimal. 5. The electrolyzed water generator according to claim 1 , wherein the conductivity sensors of the conductivity sensor for raw water, the conductivity sensor for NaCl mixed water, and the conductivity sensor for acidic ionic water are controlled by a controller. in reading, the control of the electrolysis voltage applied to the electrodes of the control and the electrolytic cell of the electromagnetic metering pump unit controller based on the data of the data and the flow rate sensor to mix the NaCl solution to a concentration of chloride ions of interest And controlling the chlorine ion concentration of the water discharged from the discharge pipe on the anode side of the electrolytic cell to be acidic ion water maintained near the target value.