JPS5814990A - Generator for ionized water - Google Patents

Abstract

PURPOSE:To obtain drinking water having substantially stabilized pH, by controllng a current-applying period on the basis of an applied electricity quantity, when tap water and a trace amount of an electrolyte dissolved in it are treated by electrolysis, electrophoresis or the like to produce ionized water. CONSTITUTION:The interior of an electrolytic reaction cell 1 as an outer vessel made of an electric unconductive material is divided into compartments by an ion-permeable membrane 2, and each of the compartments is provided with an anode 3a and a cathode 3b. The cell 1 is filled with tap water 4, and DC voltage is charged between the electrodes 3 through the rectifying circuit 11 of a current-applying controller 5 or the like. At this time, an ammeter 12 indicates a current value in response to the capacity of the cell 1, the membrane 2, the material, surface area and distance of the electrodes and the electric conductivity of the water 4, so that a change-over switch 10 is selected while watching the indication in a manner such that the indication is set at a desired level. On the other hand, an electric current between the electrodes, whose intensity is determined by the quality and temperature-change of the water 4, is integrated by an electricity integrator 14 and detected. When a fixed quantity of electricity is detected, a signal is outputted to release the switch 15.

Description

[Detailed description of the invention]

The present invention relates to tap water and trace electrolytes dissolved therein. River and lake water, which is the source of tap water, contains metal ions such as silicon, sodium, potassium, aluminum, magnesium, and iron, which are the main components of the earth's crust. These metal ions have a content of several ppm - several + ppm, and are a source of mineral water suitable for living organisms. On the other hand, unlike the above-mentioned mineral water, tap water is not sterilized by filtration alone, and it must be safe even if the water pipes become contaminated, so chlorine, which has a long-lasting sterilizing effect, is used. Injected as a disinfectant. This amount is specified in the Water Supply Law Enforcement Regulations.

[The amount of residual chlorine on the floor of the water pipe is 0.1 pprpt or more in the free form and 0.4 pprpt in the combined form.
p pnL or more. However, this sterilizing chlorine not only impairs the taste of the water, but also produces chlorine compounds such as trihalomethane, which may be a carcinogen, so it is desirable to remove chlorine as much as possible. For this reason, as a conventional method for removing chlorine, household water purifiers have become popular, which improve the quality of drinking water by removing chlorine and descaling tap water before drinking it. Since the floor etc. are attached to a tap water faucet and kept in a constantly moist state, there is an inconvenience that it becomes a breeding ground for bacteria. In addition, as another method, an electrolytic cell is defined by a microporous diaphragm, an anode made of ferrite and a cathode made of stainless steel are immersed in the electrolytic cell, and a DC voltage is applied to these electrodes. was suggested. This device creates a DC electric field between electrodes to collect metal ions such as sodium, potassium, and calcium on the cathode side, while collecting anions such as chloride ions and bicarbonate ions on the anode side, and collects anions such as chlorine ions and bicarbonate ions in the electrolytic cell on the cathode side. It was an alkaline mineral water with a lot of hydroxide ions and metal ions produced by electrolysis of water and few anions. However, in this conventional device, it was common to determine in advance the necessary electrolysis time at which the pH would be optimum using a pH test paper or the like in each small garden, and then control the electrolysis time to that time using a timer switch. However, in such an electrolysis time control method, when the quality or temperature of tap water changes, the required electrolysis time also changes, so the PH of the treated water changes depending on the difference from the electrolysis time fixed by the timer switch. The water may be too low or too high, making it unsuitable for drinking. The present invention has been made in view of the above points, and provides drinking water with an extremely stable pH by controlling the energization time of the DC voltage applied between the electrodes according to the amount of electricity supplied. . An embodiment of the present invention will be explained below based on FIGS. 1 and 2.
do. In the figure, 1 is an electrolytic reaction tank as an outer container made of a non-conductive material, 2 is an ion-permeable diaphragm that divides the inside of the electrolytic reaction tank 1 into two tanks 1a and lb, and 3a is arranged in tank 1a. A positive electrode made of ferrite, 3b a negative electrode made of stainless steel disposed in the tank 1b, and 4! Tap water injected into the reaction tank 1, 5 is an energization control device that controls the DC voltage applied between the positive electrode 3a and the negative electrode 3b according to the amount of electricity, 6 is a connector, and 7 is a main switch. , 8 is a display lamp, 9 is a transformer, 10 is a changeover switch that adjusts the DC voltage applied between the positive electrode 3a and the negative electrode 3b, and 11
1 is a rectifier circuit consisting of a diode bridge; 12 is an ammeter for detecting the current flowing through the positive electrode 3a and the negative electrode 3b;
3 is an indicator lamp; 14 is an electric quantity integrator that integrates the current flowing through the positive electrode 3a and the negative electrode 3b to detect the amount of electricity flowing; and 15 is an electric quantity integrator that outputs a signal when the electric quantity integrator 14 detects a predetermined quantity of electricity. It is a switch that opens when the signal is received. In this configuration, first, the electrolytic reaction tank 1 is filled with tap water,
Connect connector 6 to an AC power source. When the main switch 7 is closed, the transformer 9 is excited and the indicator lamp 8 is turned on. When the transformer 9 is excited, a voltage with a peak value corresponding to the selected position of the changeover switch 100 is induced on the secondary side of the transformer 9. This induced voltage is input to the rectifier circuit 11 by closing the switch 15 and becomes a DC voltage, and the ammeter 12. It is applied via the electrical quantity integrator 14 between the positive electrode 3a and the negative electrode 3b. In addition, the positive electrode 3a
and the negative electrode 3b, the capacity of the electrolytic reaction tank 1, the diaphragm 2. Since the ammeter 12 indicates the current value according to the electrode material, electrode area, distance between electrodes, and conductivity of tap water,
It is only necessary to select the changeover switch 1° while checking the ammeter 12 so as to obtain the desired current value. On the other hand, the current flowing between the positive and negative electrodes 3a and 3b, whose strength is determined by the conductivity, etc., which fluctuates depending on the quality of tap water and temperature changes, is integrated in the electricity quantity integrator 14, and the quantity of electricity flowing is determined by the electricity quantity integrator 14. It is detected by this integration. This electric quantity integrator 14 is used to measure a predetermined electric quantity, that is, a predetermined PH obtained from a relationship curve obtained by measuring the energized electric quantity and PH under various conditions as shown in FIG.
When the amount of energized electricity corresponding to the value is detected, a signal is output and the switch 15 is opened. By opening this switch 15, the voltage induced on the secondary side of the transformer 9 is transferred to the rectifier circuit 11.
Therefore, no DC voltage is applied between the positive and negative electrodes 3a and 3b, thereby stopping the electrolytic treatment. Therefore,
During this stop, a predetermined amount of electricity is flowing through the positive and negative electrodes 3a and 3b, so as can be understood from FIG. The value within can be set as a predetermined PH value. For reference, the amount of electricity and PH obtained by measurement in Figure 2 are shown.
To explain the relationship with the value, the hydroxide ions and hydrogen ions generated at the positive and negative electrodes 3a and 3b move to the other electrode through the diaphragm 2, and heat loss due to resistance and other ion species occur. Approximately 5~ compared to theory due to concurrent electrode reactions, etc.
6 times as much electricity is required, for example, if the capacity of the cathode 3b is 1
! In this case, it is 50 to 60 coulombs, and in the case of 2J it is 100
~120 coulombs of electricity are required. In the above embodiment, the switch 15, which is controlled to open and close by the electric quantity integrator 14, is installed on the secondary side of the transformer 9, but it is obvious that it can also be placed on the negative side. heat loss can be prevented, making it effective for energy saving. As explained above, according to the present invention, even if the quality and temperature of the tap water fluctuates, the conductivity of the tap water changes depending on the fluctuation of the DC voltage applied between the positive and negative electrodes. Since it is controlled by the amount of electricity flowing between the electrodes, which changes according to the amount of electricity flowing between the electrodes, it is possible to obtain ionized water with a constant pH value regardless of fluctuations in the quality and temperature of tap water. It also prevents wastage of electricity.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an ionized water generator according to an embodiment of the present invention, and FIG. 2 is a diagram showing a relationship curve between PH and quantity of electricity measured under various conditions. l-... Electrolytic reaction tank 2... Diaphragm 3a... Positive electrode 3b... Negative electrode 4... Tap water 5...
Energization control device 11... Rectifier circuit 14... Electricity integrator representative Shin Kuzuno - (1 other person)

Claims (1)

[Claims] An ion-permeable diaphragm is provided in an outer container made of a non-conductive material to define the inside of the outer container, and electrodes are provided in at least two of the plurality of tanks formed by the definition. An ionized water generator characterized by being provided with an energization control device that controls the time during which a DC voltage is applied between electrodes according to the amount of electricity supplied.