JPH07328626A - Electrolyzed water producing device and chlorine ion concentration control method for the same - Google Patents

Abstract

PURPOSE:To feed back the chlorine ion concentration of raw water, NaCl mixed water and acidic water in an electrolyzed water producing device to a control system to keep the chlorine ion concentration of discharged water on the electrolyzer anode side around the target value by detecting the electrical conductivity in lenear relation with the chlorine ion concentration. CONSTITUTION:This device is constituted of an electromagnetic fixed delivery pump part 6 for mixing raw water with NaCl solution, conductivity sensor 21, 21, 23 for detecting respectively the electrical conductivity of raw water, NaCl mixed water and acidic ionized water, a flow sensor 7 for detecting the flow rate of the NaCl mixed water, an electrolyzer 8 for electrolyzing the NaCl mixed water, and a control part 1 for controlling these.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolyzed water generator and electrolysis for producing acidic ionized water and alkaline ionized water for use as sterilizing and washing water by electrolyzing a NaCl solution into raw water such as tap water and well water. The present invention relates to a chlorine ion concentration control method in a water generator.

[0002]

2. Description of the Related Art In recent years, as static sterilization 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 agricultural chemicals, JP-A-62-1493. The use of electrolyzed electrolyzed water that can be used safely and at low cost by the human body as shown in the publication is increasing.

A conventional electrolyzed water generator will be described below. FIG. 2 is a block diagram of a conventional electrolyzed water generator to which a NaCl solution is added. In FIG. 2, 1 is a raw water pipe for tap water or the like, 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, 6 is an electromagnetic metering pump unit for mixing the raw water with the NaCl solution, 7 is a flow rate sensor for detecting the water flow rate, 8 is an electrolytic cell for electrolyzing the NaCl mixed water that has passed through the flow rate sensor 7, and 9 is an electrolytic cell 8. Separation membranes forming a pair of divided electrode chambers, 10 and 11 are electrodes arranged in each electrode chamber formed by dividing into two by the diaphragm 9, 12 is a water supply pipe for supplying raw water to the electromagnetic metering pump unit 6, 13 is the electromagnetic metering pump unit 6 to N
A water supply pipe for supplying the aCl mixed water to the flow rate sensor 7, 14 is a water supply pipe for supplying the mixed water from the flow rate sensor 7 to the electrolytic cell 8,
Reference numeral 15 is an anode-side discharge pipe for discharging acidic ionized water electrolyzed in the electrolytic bath 8, 16 is a cathode-side discharge pipe for discharging alkaline ionized water electrolyzed in the electrolytic bath 8, and 17 is an electrolytic bath 8 and an anode side. A fixed restrictor for adjusting discharge water for efficiently generating alkaline ionized water and acid ionized water, which is disposed near the discharge pipe connecting portion, 18a detects the amount of water passing through the flow rate sensor 7, and the solenoid valve 4 and the electromagnetic metering pump portion 6 are provided. Numeral 19 is a controller section for controlling the electrolysis water generator, 19 is a power supply section for supplying electric power required for the electrolyzed water generator 3a, and 20 is a water passage switch for starting the operation of the electrolyzed water generator 3a.

The operation will be described below. The user normally keeps the faucet 2 open all the time, and when the water flow switch 20 is pressed during use, the electromagnetic valve 4 opens and raw water is supplied to the electrolyzed water generator 3a. The controller unit 18a, which has detected the supply of raw water by the flow rate sensor 7, controls the electromagnetic metering pump unit 6 and applies a voltage to the electrodes 10 and 11 of the electrolysis tank 8 to perform electrolysis.
A positive voltage is applied to the electrode 10 and a negative voltage is applied to the electrode 11, and the electrolytic cell 8 forms an anode chamber and a cathode chamber that are partitioned by a diaphragm 9, and acidic ionized water is generated in the anode chamber, and the cathode chamber is formed. Alkaline ionized water is generated in.

[0005]

In such a 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 was a problem that the desired chlorine ion concentration could not be obtained.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to stably maintain acidic ionized water at a desired chlorine ion concentration.

[0007]

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

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

[0009]

According to the present invention, in the above-mentioned structure, the conductivity of each conductivity sensor of raw water / NaCl mixed water / acid ion water is read by the controller unit, and based on the data and the data of the flow sensor, the chlorine target by the controller unit is read. The electromagnetic metering pump unit that mixes the NaCl solution and the voltage applied to the electrolytic cell are controlled so that the ion concentration is achieved. As a result, acidic ionized water in which the chlorine ion concentration of the discharged water on the anode side of the electrolytic cell is kept near the target value can be obtained.

[0010]

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

The operation of the electrolyzed water generator 3 configured as described above will be described. The electrolyzed water generator 3 is usually
It is connected to a raw water pipe such as water supply. When the user normally opens the faucet 2 and presses the water passage switch 20 when necessary, the electromagnetic valve 4 is opened and raw water is supplied according to an instruction from the controller unit 18.
Raw water is supplied to the electromagnetic metering pump unit 6 through the water supply pipe 12. At this time, the electric conductivity of the raw water is measured by the electric conductivity sensor 21 for the raw water attached to the water supply pipe 12.
8 reads. The 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 the supply of raw water by the flow rate sensor 7
Reference numeral 8 mixes the NaCl solution with the raw water under the control of the electromagnetic metering pump unit 6, and further applies a voltage to the electrodes 10 and 11 of the electrolytic cell 8 to perform electrolysis. A positive voltage is applied to the electrode 10 and a negative voltage is applied to the electrode 11, and the electrolytic cell 8 forms an anode chamber and a cathode chamber that are partitioned by a diaphragm 9, and acidic ionized water is generated in the anode chamber, and the cathode chamber is formed. Alkaline ionized water is generated in. After stabilizing the raw water flow rate, the controller 18 is a NaC attached to the water supply pipe 14 and the anode side discharge pipe 15.
The conductivity sensor 22 for mixed water and the conductivity sensor 23 for acidic ionized water read the conductivity of the NaCl mixed solution and the acidic ionized water, and feedback control of the chlorine ion concentration is performed.

In this embodiment, the conductivity sensor is used because the chlorine ion concentration is replaced by the conductivity.
Conductivity sensor 22 for NaCl mixed water attached to No. 4
By using a salt concentration meter instead of, the same control as above can be performed.

[0013]

As is apparent from the above description, according to the present invention, a plurality of conductivity sensors are attached to the water passage of the electrolyzed water generator, and the chlorine ion concentration is adjusted to each unit of raw water / NaCl mixed water / acid ion water. By controlling the supply amount of the NaCl solution, the chlorine ion concentration of the acidic ionized water can be maintained at the target value without being affected by artificial and other external factors. is there.

[Brief description of drawings]

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

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

[Explanation of symbols]

 3 Electrolyzed water generator 6 Electromagnetic metering pump unit 7 Flow rate sensor 8 Electrolyzer 12, 13, 14 Water supply pipe 15 Anode side discharge pipe 18 Controller unit 21 Conductivity sensor for raw water 22 Conductivity sensor for NaCl mixed water 23 Acidic ion water Conductivity sensor

Claims (4)

[Claims] 1. Raw water and Na are instructed by a controller unit.
An electromagnetic metering pump unit that mixes a Cl solution, a flow rate sensor that detects the water flow rate, and Na that has passed through the flow rate sensor.
It has an electrolyzer for electrolyzing Cl mixed water, and a conductivity sensor for raw water is installed in the water supply pipe that supplies the raw water to the electromagnetic metering pump section.
An electrolyzed water generator equipped with a conductivity sensor for NaCl mixed water in a water supply pipe for supplying NaCl mixed water from a flow rate sensor to an electrolysis tank and a conductivity sensor for acidic ionized water in an anode side discharge pipe of the electrolysis tank. 2. The electrolyzed water generator according to claim 1, wherein a salt concentration meter is used instead of the conductivity sensor for NaCl mixed water. 3. An electromagnetic metering pump unit for mixing the raw water and the NaCl solution is controlled via a controller unit and supplied to the electrolytic cell by the data of the conductivity sensor for raw water, the conductivity sensor for NaCl mixed water and the flow rate sensor. A method for controlling the chlorine ion concentration in an electrolyzed water generator that controls the chlorine ion concentration to an optimum condition. 4. The conductivity sensor for acidic ionized water detects the chloride ion concentration after electrolysis and feeds it back to the controller to control the chloride ion concentration of the discharge water on the anode side of the electrolytic cell to a target value. Method for controlling chlorine ion concentration in electrolyzed water generator.