JPH09155353A - Water supply apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply water containing effective chlorine in specified concn. and prevent the water pollution caused by the transpiration of effective chlorine and the penetration of bacteria. SOLUTION: Since the electrolytic current value applied to a pair of opposed electrode plates is corrected corresponding to the temp. of tap water sent into a hermetically closed electrolytic cell, even when the temp. of tap water is changed, water containing effective chlorine in a specified concn. can be stably obtained to be supplied. Further, since tap water is electrolyzed on the way of water supply in the non-contact state with the open air within a hermetically closed electrolytic cell, effective chlorine produced by electrolysis can be effectively utilized to perform expected sterilization and the penetration of bacteria from the outside can be prevented to accurately avoid water pollution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply device for supplying sanitary water that has been sterilized.

[0002]

2. Description of the Related Art FIG. 12 shows a conventional water supply device of this kind. In FIG. 12, 101 is a water storage tank, 102 is a first pump, 103 is a cistern, 104 is a pair of electrode plates, and 10 is a pair of electrode plates.
5 is a float switch, 106 is an overflow pipe, 1
Reference numeral 07 is a second pump.

In this device, the water level drop in the systern 103 is detected by the float switch 105 to detect the water storage tank 1.
The tap water F in 01 can be automatically replenished in the cistern 103 by the first pump 102, and the pair of electrode plates 10
The tap water F in the cistern 103 can be electrolyzed by passing an electrolysis current to the electroless electrolyte 4, and the tap water F after electrolysis can be delivered from the water supply port by the second pump 107.

[0004] chloride ions as one containing ions in tap water F which is stored in the water storage tank 101 (Cl ^-) for the presence, 2C in the electrolysis in the cistern 13
Chlorine (Cl ₂ ) is generated by the reaction of l ⁻ → Cl ₂ + 2e, and this chlorine is dissolved in water (H ₂ O) to generate Cl ₂
The reaction of + H ₂ O → HClO + HCl produces hypochlorous acid (HClO). That is, the tap water F in the cistern 13 is sterilized by the hypochlorous acid (effective chlorine).

[0005]

The amount of available chlorine produced by electrolysis is closely related to the temperature of the electrolyzed chlorine ion-containing water. That is, even if the electrolytic current value is preset according to the chlorine ion concentration of the chlorine ion-containing water to be used, when the temperature of the chlorine ion-containing water changes, the effective chlorine generated and the effective chlorine that spontaneously decomposes The balance will be lost and it will not be possible to obtain water with the desired effective chlorine concentration.

Moreover, since the cistern for electrolysis is open or in a state close to this, there is a problem that the generated effective chlorine easily evaporates to the outside, and bacteria and the like enter from the outside to cause water pollution. .

The present invention has been made in view of the above problems, and an object thereof is to supply water containing a predetermined concentration of effective chlorine and to prevent water pollution due to evaporation of effective chlorine and invasion of bacteria and the like. An object of the present invention is to provide a water supply device which can be prevented.

[0008]

In order to achieve the above object, the invention of claim 1 is a water supply for electrolyzing chlorine ion-containing water such as tap water to supply water containing effective chlorine at a predetermined concentration. In the device, a chlorine-containing water that flows in from the inlet and flows between a pair of opposing electrodes is electrolyzed in the course of passage and can flow out from the outlet, and into the closed electrolytic cell based on the water supply start command. The water supply control means for starting the feeding of the chlorine ion-containing water and stopping the feeding of the chlorine ion-containing water into the sealed electrolytic cell based on the water supply stop command or after the lapse of the set water supply time from the start of the water supply, and the closed electrolysis Electrolysis control means for applying a predetermined electrolytic current to the pair of counter electrodes in accordance with the feeding of chlorine ion-containing water into the tank,
Water temperature detection means for detecting the temperature of the chlorine ion-containing water sent into the closed electrolytic cell, and the temperature of the chloride ion-containing water sent into the closed electrolytic cell so that water containing a specified concentration of available chlorine is supplied. And an electrolytic current value correcting means for correcting the electrolytic current value applied to the pair of counter electrodes according to the above.

In the water supply device according to the invention of claim 1,
The temperature of the chlorine ion-containing water is detected by detecting the temperature of the chlorine ion-containing water fed into the closed electrolytic cell, and the temperature of the chlorine ion-containing water is corrected according to the temperature of the chlorine ion-containing water. Even when the water temperature changes, water containing a predetermined concentration of available chlorine can be accurately supplied. In addition, since the closed electrolyzer electrolyzes the water in the course of water supply without contact with the outside air, the generated effective chlorine does not evaporate to the outside, and water pollution due to bacteria invading from the outside Can be prevented.

According to a second aspect of the present invention, in a water supply device which electrolyzes chlorine ion-containing water such as tap water to supply water containing a predetermined concentration of available chlorine, the water is introduced from an inlet to a space between a pair of opposing electrodes. A closed electrolyzer that can electrolyze flowing chlorine ion-containing water during its passage and flow out from the outlet, and starts feeding the chlorine ion-containing water into the closed electrolyzer based on the water supply start command, and stops water supply. Water supply control means for stopping the feeding of chlorine ion-containing water into the closed electrolyzer after a lapse of a set water supply time based on a command or from the start of water supply,
Electrolysis control means for applying a predetermined electrolysis current to the pair of counter electrodes in accordance with the feeding of chlorine ion-containing water into the closed electrolytic cell, and voltage detection means for detecting the inter-electrode voltage at the pair of counter electrodes during electrolysis. And an electrolytic current value correcting means for correcting the electrolytic current value given to the pair of counter electrodes according to the inter-electrode voltage so that water containing a predetermined concentration of available chlorine is supplied. There is.

In the water supply device according to the invention of claim 2,
By utilizing the characteristic that the electric resistance of chlorine ion-containing water changes in inverse proportion to the water temperature, the temperature of the electrolyzed chlorine ion-containing water is alternatively detected by the inter-electrode voltage at a pair of opposing electrodes. . In this device, the voltage between the electrodes at the pair of opposing electrodes is detected during electrolysis, and the electrolytic current value given to the pair of opposing electrodes is corrected according to the voltage between the electrodes, so that the temperature of the chlorine-containing water is Even if the water content changes, it is possible to accurately supply water containing a predetermined concentration of available chlorine. Other functions are similar to those of the invention of claim 1.

According to a third aspect of the present invention, in a water supply device which electrolyzes chlorine ion-containing water such as tap water to supply water containing a predetermined concentration of available chlorine, the water is introduced from an inlet to a space between a pair of opposing electrodes. A closed electrolyzer that can electrolyze flowing chlorine-ion-containing water in the course of its passage and flow out from the outlet, and starts feeding the chlorine-ion-containing water into the closed electrolyzer based on the water supply start command, and starts water supply. From the water supply control means for stopping the feeding of chlorine ion-containing water into the closed electrolytic cell after the set water supply time has passed, and a predetermined electrolysis current in accordance with the feeding of the chlorine ion-containing water into the closed electrolytic cell. Electrolysis control means applied to the counter electrode, water temperature detection means for detecting the temperature of chlorine ion-containing water fed into the closed electrolytic cell, and water supplied at the set water supply time contains effective chlorine of a predetermined concentration. Equipped with a energizing time correction means for correcting the energization time of the pair of opposed electrodes in accordance with the temperature of the chlorine ion-containing water is fed into the sea urchin sealed electrolytic cell, and its characterized by.

In the water supply device according to the invention of claim 3,
The temperature of the chlorine ion-containing water is detected by detecting the temperature of the chlorine ion-containing water fed into the sealed electrolytic cell, and the temperature of the chlorine ion-containing water is corrected because the energizing time to the pair of counter electrodes is corrected according to the temperature of the chlorine ion-containing water. Even when the water content changes, it is possible to make the water supplied at the set water supply time contain a predetermined concentration of available chlorine.
In addition, since the closed electrolyzer electrolyzes the water in the course of water supply without contact with the outside air, the generated effective chlorine does not evaporate to the outside, and water pollution due to bacteria invading from the outside Can be prevented.

According to a fourth aspect of the present invention, in a water supply device which electrolyzes chlorine ion-containing water such as tap water to supply water containing a predetermined concentration of available chlorine, the water is introduced from an inlet to a space between a pair of opposing electrodes. A closed electrolyzer that can electrolyze flowing chlorine-ion-containing water in the course of its passage and flow out from the outlet, and starts feeding the chlorine-ion-containing water into the closed electrolyzer based on the water supply start command, and starts water supply. From the water supply control means for stopping the feeding of chlorine ion-containing water into the closed electrolytic cell after the set water supply time has passed, and a predetermined electrolysis current in accordance with the feeding of the chlorine ion-containing water into the closed electrolytic cell. Electrolysis control means applied to the counter electrode, voltage detection means for detecting the inter-electrode voltage at the pair of counter electrodes during electrolysis, and water so supplied at the set water supply time to have a predetermined concentration of available chlorine. Equipped with a energizing time correction means for correcting the energization time of the pair of opposed electrodes in accordance with the inter-electrode voltage,
That is the feature.

In the water supply device according to the invention of claim 4,
By utilizing the characteristic that the electric resistance of chlorine ion-containing water changes in inverse proportion to the water temperature, the temperature of the electrolyzed chlorine ion-containing water is alternatively detected by the inter-electrode voltage at a pair of opposing electrodes. . In this device, the voltage between electrodes at the pair of counter electrodes is detected during electrolysis, and the energization time to the pair of counter electrodes is corrected according to the voltage between the electrodes, so that
Even if the temperature of the chlorine ion-containing water changes, the water supplied at the set water supply time can contain effective chlorine of a predetermined concentration. The other operation is the same as that of the invention of claim 3.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] FIGS. 1 to 4 relate to a first embodiment of the present invention. FIG. 1 is a circuit diagram of a water supply device, FIG. 2 is a sectional view of a sealed electrolytic cell, and FIG. The configuration diagram of the control system, FIG. 4 is a program flow of the water supply treatment.

First, the circuit configuration of the water supply device will be described with reference to FIGS. 1 and 2. In the figure, 1 is a semi-enclosed water storage tank, and tap water F is used as chlorine ion-containing water.
Is stored. In addition, on the upper surface of the water storage tank 1, fine ventilation holes 1a for keeping the inner and outer pressures even are formed.

A water purifier 2 has a purifying filter 2a made of activated carbon or the like inside. The water purifier 2 of the illustrated example has an inlet 2b and an outlet 2c on the upper surface. The tap water F that has flowed in from the inlet 2b has its odor and impurities removed by the purification filter 2a, and flows out to the outside from the outlet 2c. .

As shown in FIG. 2, a closed type electrolytic cell 3 has a flat passage 3b inside the cell body 3a, an inlet 3c at one end of the passage 3b, and two at the other end. Exit 3
It has d and 3e facing each other. Further, a cathode plate 3f and an anode plate 3g are provided on each of the opposing surfaces of the passage 3b so as to cover the respective surfaces with a predetermined distance between the electrodes.
At the other end position of b, a flow divider 3 for dividing each electrolyzed water into each outlet side
h is provided. Further, inside the inlet 3c, a water temperature sensor 3i such as a thermistor for detecting the temperature of the tap water F fed into the closed electrolytic bath 3 is provided.

In this closed electrolyzer 3, while feeding purified tap water F into the inlet 3c, the cathode plate 3f and the anode plate 3 are fed.
By flowing a predetermined electrolytic current to g, the tap water F flowing through the passage 3b is electrolyzed in the course of passing through the cathode water 3f.
Alkaline ionized water containing a large amount of H ⁺ , Ca ²⁺ , Mg ²⁺ , Na ^+, etc. (hereinafter simply referred to as alkaline water) was included on the side, and OH ⁻ , ClO ^−, etc. were included on the side of the anode plate 3 g. Generates acidic ionized water (hereinafter simply referred to as acidic water),
These can be separately delivered from the outlets 3d and 3e via the flow divider 3h.

A combiner 4 serves to combine the alkaline water and the acidic water flowing out from the alkaline water outlet 3d and the acidic water outlet 3e of the sealed electrolytic cell 3, respectively. By the way, in the above-mentioned closed type electrolyzer 3, the alkaline water and the acidic water were once separately made to flow out and combined by the combiner 4 in order to effectively generate available chlorine, but one outlet was used. If the alkaline water and the acidic water are allowed to flow out while being combined with each other from the outlet, the combiner 4 becomes unnecessary.

5 is an electric pump, 6 is a cooling coil, 7 is an electric valve, 8 is a flow rate controller, A1 is a pipe line connecting the water storage tank 1 and the inlet 2b of the water purifier 2, and A2 is an outlet 2c of the water purifier 2.
And a conduit connecting the inlet 3c of the closed electrolytic bath 3, A3 is a conduit connecting the alkaline water outlet 3d of the closed electrolytic bath 3 and the confluent unit 4,
A4 is a conduit connecting the acidic water outlet 3e of the closed electrolyzer 3 and the confluence unit 4, A5 is a conduit connecting the confluence unit 4 and the pump 5, A6 is a conduit connecting the pump 5 and the cooling coil 6, and A7 is cooling. A pipe connecting the coil 6 and the valve 7, A8 connecting the valve 7 and the flow rate controller 8, and A9 connecting the flow rate controller 8 and the water supply port (not shown).

Next, the control system configuration of the water supply device will be described with reference to FIG. In the figure, reference numeral 11 denotes a microcomputer, which includes a CPU, a memory, an input / output device, etc., and stores a program for water supply processing, which will be described later, in the memory. The microcomputer 11 sends a control signal to each of the electrolytic control circuit 12 and the water supply control circuit 13, which will be described later, according to the stored program.

Reference numeral 3i is the water temperature sensor described above, which detects the temperature of the tap water F fed into the closed electrolytic bath 3 and sends the detection signal to the microcomputer 11.

Reference numeral 12 denotes an electrolysis control circuit, which is composed of a direct current power source with variable current, and varies the electrolysis current value given to the pair of opposed electrode plates 3f and 3g of the sealed electrolytic cell 3 based on a control signal from the microcomputer 11. This is a pair of counter electrode plates 3f, 3g
Give to.

Reference numeral 13 denotes a water supply control circuit which controls the drive power supply to the pump 5 and the valve 7 based on a control signal from the microcomputer 11 to operate and stop the pump 5 and open and close the valve 7.

The operation of the water supply apparatus according to this embodiment will be described below with reference to FIG. After the power is turned on, a standby state is entered, and an external water supply start command is waited for (step SA1 in FIG. 4).

When a water supply start command is received from the outside,
A predetermined electrolytic current value is read based on the chlorine ion concentration of the tap water F to be used, and the pump 5 is started to open the valve 7, and the read electrolytic current value is read as a pair of counter electrode plates 3f, 3g. (Steps SA2 and SA3 in FIG. 4).

As a result, the tap water F in the water storage tank 1 is sent into the closed electrolytic cell 3 through the water purifier 2 and is electrolyzed in the process of passing through the passage 3b. The alkaline water and the acidic water after electrolysis are separately discharged from the outlets 3d and 3e and then merged in the merger 4, cooled by natural heat dissipation in the process of passing through the cooling coil 6, and then the valve 7 and the flow controller. It is delivered at a constant flow rate from the water supply port via 8 in sequence.

During this water supply, the temperature of the tap water F fed into the closed electrolyzer 3 is detected and monitored until a water supply stop command is received from the outside, and the detected temperature deviates from a predetermined reference temperature. Sometimes, a pair of counter electrode plates 3f, 3g
The value of the electrolysis current applied to is corrected (step SA in FIG. 4).
4, SA5, SA6).

Here, a method of correcting the electrolytic current value depending on the water temperature will be described. The reference value of the electrolysis current applied immediately after the start of electrolysis is a chlorine ion contained in the tap water F to be used so that an effective chlorine concentration of 1 ppm that can be used as drinking water, for example, can be secured at the outlet side of the combiner 4. For example, 1.2 A is preset based on the density.

Tap water F fed into the closed electrolyzer 3
When the temperature t is in the range of 12 ° C. ≦ t ≦ 28 ° C., no particular correction is performed and the electrolytic current according to the reference value is applied to the pair of opposing electrode plates 3f and 3g. Further, when the temperature t of the tap water F is t <12 ° C., the natural decomposing power of effective chlorine is weakened, and the effective chlorine concentration becomes higher than the desired value even if the electrolytic current according to the standard value is applied. Occasionally, the electrolytic current value is corrected to, for example, 0.8 A to suppress the generation of available chlorine due to electrolysis. On the other hand, the temperature t of the tap water F is 28 ° C <t
At this time, the natural decomposing power of available chlorine becomes stronger, and the effective chlorine concentration becomes lower than the desired value even if an electrolytic current according to the standard value is applied. At this time, the electrolytic current value is corrected to, for example, 2 A, and electrolysis is performed. To improve the generation of available chlorine.

Of course, the electrolytic current value may be corrected by a method other than the above, for example, a function using the difference between the reference temperature and the detected temperature as a variable, or data prepared in advance for each detected temperature.

When a water supply stop command is received from the outside during water supply, the pump 5 is stopped, the valve 7 is closed, and the application of current to the pair of counter electrode plates 3f, 3g is stopped (step SA7 in FIG. 4). ).

The effective chlorine-containing water obtained by electrolysis has various uses depending on its concentration. For example, if the effective chlorine concentration is set to around 1 ppm, it can be used as ordinary drinking water or drinking water for post-mix type dispensers. When the concentration is set high, it can be used as sterilizing water for medical instruments and the like.

As described above, according to the water supply apparatus of the present embodiment, the electrolytic current value given to the pair of counter electrode plates 3f, 3g is corrected according to the temperature of the tap water F fed into the closed electrolytic bath 3. Therefore, even if the temperature of the electrolyzed tap water F changes, it is possible to stably obtain and supply water containing a predetermined concentration of available chlorine.

Further, since the tap water F which is being supplied with water is electrolyzed in the non-contact state with the outside air by the closed electrolytic cell 3,
The effective chlorine generated by the electrolysis can be effectively used for the desired sterilization, and further, the invasion of bacteria and the like from the outside can be prevented, and the water pollution can be appropriately avoided.

[Second Embodiment] FIGS. 5 and 6 relate to a second embodiment of the present invention. FIG. 5 is a control system configuration diagram of a water supply apparatus, and FIG. 6 is a program flow of water supply processing. is there.

The present embodiment differs from the first embodiment in that a water supply time setting device 14 for arbitrarily setting the water supply time is provided, and water is supplied only during the water supply time set here. It is in.

The operation of the water supply apparatus according to this embodiment will be described below with reference to FIG. After the power is turned on, the standby state is entered, and the external water supply start command is waited for (step SB1 in FIG. 6).

When a water supply start command is received from the outside,
A predetermined electrolytic current value is read based on the chlorine ion concentration of the tap water F to be used, and the water supply time set by the water supply time setter 14 is read (step SB in FIG. 6).
2). Then, the operation of the pump 5 is started to open the valve 7, and the read electrolytic current value is applied to the pair of opposing electrode plates 3f and 3g (step SB3 in FIG. 6).

As a result, the tap water F in the water storage tank 1 is fed into the closed electrolytic cell 3 via the water purifier 2 and is electrolyzed in the process of passing through the passage 3b. The alkaline water and the acidic water after electrolysis are separately discharged from the outlets 3d and 3e and then merged in the merger 4, cooled by natural heat dissipation in the process of passing through the cooling coil 6, and then the valve 7 and the flow controller. It is delivered at a constant flow rate from the water supply port via 8 in sequence.

During this water supply, the temperature of the tap water F fed into the sealed electrolytic cell 3 is detected and monitored until the set water supply time elapses, and the detected temperature deviates from the predetermined reference temperature. When there is a pair of counter electrode plates 3f, 3g
The value of the electrolytic current applied to is corrected (step SB in FIG. 6).
4, SB5, SB6). The specific correction method is the same as in the first embodiment.

After the lapse of the set water supply time, the pump 5 is stopped, the valve 7 is closed, and the current application to the pair of counter electrode plates 3f, 3g is stopped (step SB7 in FIG. 6). .

As described above, according to the water supply apparatus of the present embodiment, it is possible to regulate the water supply amount per time by the water supply time, which is extremely useful when a fixed amount of water is required. is there. Other operations and effects are the same as those of the first embodiment.

[Third Embodiment] FIGS. 7 and 8 relate to a third embodiment of the present invention. FIG. 7 is a block diagram of a control system of a water supply apparatus, and FIG. 8 is a program flow of water supply processing. is there.

The present embodiment is different from the first embodiment in that the water temperature sensor 3i is eliminated and that a voltage detection circuit 15 for detecting the voltage between electrodes of the pair of counter electrode plates 3f and 3g during electrolysis is provided. It is provided and the detection signal is fed back to the microcomputer 11.

The operation of the water supply apparatus according to this embodiment will be described below with reference to FIG. After the power is turned on, the standby state is entered, and the external water supply start command is waited for (step SC1 in FIG. 8).

When a water supply start command is received from the outside,
A predetermined electrolytic current value is read based on the chlorine ion concentration of the tap water F to be used, and the pump 5 is started to open the valve 7, and the read electrolytic current value is read as a pair of counter electrode plates 3f, 3g. (Steps SC2 and SC3 in FIG. 8).

As a result, the tap water F in the water storage tank 1 is sent into the sealed electrolytic cell 3 via the water purifier 2 and is electrolyzed in the process of passing through the passage 3b. The alkaline water and the acidic water after electrolysis are separately discharged from the outlets 3d and 3e and then merged in the merger 4, cooled by natural heat dissipation in the process of passing through the cooling coil 6, and then the valve 7 and the flow controller. It is delivered at a constant flow rate from the water supply port via 8 in sequence.

During this water supply, the voltage between the electrodes of the pair of opposing electrode plates 3f, 3g is detected and monitored until a water supply stop command is received from the outside. When the detected voltage deviates from a predetermined reference voltage, The electrolytic current value applied to the pair of counter electrode plates 3f and 3g is corrected (steps SC4 and SC in FIG. 8).
5, SC6).

Here, a method of correcting the electrolytic current value by the voltage between electrodes will be described. The reference value of the electrolysis current applied immediately after the start of electrolysis is a chlorine ion contained in the tap water F to be used so that an effective chlorine concentration of 1 ppm that can be used as drinking water, for example, can be secured at the outlet side of the combiner 4. For example, 1.2 A is preset based on the density.

In this embodiment, the characteristic that the electric resistance of the tap water F changes in inverse proportion to the water temperature is utilized to change the temperature of the electrolyzed chlorine ion-containing water by the voltage between the electrodes between the pair of opposing electrodes. Alternatively, when the inter-electrode voltage v during electrolysis is in the range of 10 V ≤ t ≤ 13 V, no special correction is made and the electrolytic current according to the reference value is applied to the pair of opposing electrode plates 3f, 3g. Given to. Further, when the inter-electrode voltage v is 13 V <v, the natural decomposing power of effective chlorine is weakened, and even if the electrolytic current according to the reference value is applied, the effective chlorine concentration becomes higher than the desired value. The value is corrected to, for example, 0.8 A to suppress generation of available chlorine due to electrolysis. On the other hand, when the inter-electrode voltage v is v <10V, the natural decomposing power of the effective chlorine becomes stronger, and the effective chlorine concentration becomes lower than the desired value even if the electrolytic current according to the reference value is applied. The value is corrected to, for example, 2 A to improve the generation of available chlorine by electrolysis.

Of course, the electrolytic current value may be corrected by a method other than the above, for example, a function using the difference between the reference voltage and the detected voltage as a variable, or data prepared in advance for each detected voltage.

When a water supply stop command is received from the outside during water supply, the pump 5 is stopped, the valve 7 is closed, and the application of current to the pair of counter electrode plates 3f, 3g is stopped (step SC7 in FIG. 8). ).

As described above, according to the water supply apparatus of the present embodiment, the temperature of the tap water F to be electrolyzed is detected by the voltage between the electrodes of the pair of counter electrode plates 3f and 3g instead. As in the first embodiment, the water temperature sensor 3i is not required to be incorporated in the sealed electrolytic cell 3 or the like, and the signal for correction can be detected with simple wiring. Other operations and effects are the same as those of the first embodiment.

[Fourth Embodiment] FIGS. 9 and 10 relate to a fourth embodiment of the present invention. FIG. 9 is a control system configuration diagram of a water supply apparatus, and FIG. 10 is a program flow of water supply processing. is there.

The present embodiment is different from the third embodiment in that a water supply time setting device 14 for arbitrarily setting the water supply time is provided and water is supplied only during the water supply time set here. It is in.

The operation of the water supply apparatus according to this embodiment will be described below with reference to FIG. After the power is turned on, the standby state is entered, and the external water supply start command is waited for (step SD1 in FIG. 10).

When a water supply start command is received from the outside,
A predetermined electrolytic current value is read based on the chlorine ion concentration of the tap water F to be used, and the water supply time set by the water supply time setter 14 is read (step S in FIG. 10).
D2). Then, the operation of the pump 5 is started to open the valve 7, and the read electrolytic current value is applied to the pair of counter electrode plates 3f and 3g (step SD3 in FIG. 10).

As a result, the tap water F in the water storage tank 1 is fed into the closed electrolyzer 3 via the water purifier 2 and is electrolyzed while passing through the passage 3b. The alkaline water and the acidic water after electrolysis are separately discharged from the outlets 3d and 3e and then merged in the merger 4, cooled by natural heat dissipation in the process of passing through the cooling coil 6, and then the valve 7 and the flow controller. It is delivered at a constant flow rate from the water supply port via 8 in sequence.

During this water supply, the voltage between the electrodes of the pair of opposing electrode plates 3f, 3g is detected and monitored until the set water supply time elapses, and when the detected voltage deviates from the predetermined reference voltage. , The electrolytic current value applied to the pair of counter electrode plates 3f, 3g is corrected (steps SD4, S in FIG. 10).
D5, SD6). The specific correction method is the same as in the third embodiment.

After the set water supply time has elapsed, the pump 5 is stopped, the valve 7 is closed, and the application of current to the pair of counter electrode plates 3f and 3g is stopped (FIG. 10).
Step SD7).

As described above, according to the water supply device of the present embodiment, it is possible to regulate the water supply amount per time by the water supply time, which is extremely useful when a fixed amount of water is required. is there. Other actions and effects are similar to those of the third embodiment.

[Fifth Embodiment] FIG. 11 shows the fifth embodiment of the present invention.
It is a circuit diagram of a water supply apparatus according to the embodiment of.

The present embodiment is different from the first embodiment in that the cistern 21 is interposed between the water purifier 2 and the closed electrolyzer 3 and the water supply from the water storage tank 1 to the cistern 21 side is performed. An electric pump 22 for controlling is provided.

By the way, B1 in the figure is a pipe line connecting the water storage tank 1 and the inlet 2b of the water purifier 2, and B2 is the outlet 2 of the water purifier 2.
A pipe connecting c and the pump 22, B3 is a pipe connecting the pump 22 and the cistern 21, B4 is a pipe connecting the cisturn 21 and the inlet 3c of the closed electrolyzer 3, and B5 is an alkaline water outlet of the closed electrolyzer 3. 3d is a pipe connecting the confluence unit 4, B6 is a pipe connecting the acidic water outlet 3e of the closed electrolyzer 3 and the confluence unit 4, B6
Reference numeral 7 is a conduit connecting the confluence unit 4 and the pump 5, B8 is a conduit connecting the pump 5 and the cooling coil 6, B9 is a conduit connecting the cooling coil 6 and the valve 7, and B10 is connecting the valve 7 and the flow controller 8. A pipe line, B11, is a pipe line connecting the flow rate controller 8 and the water supply port (not shown).

The cistern 21 is for temporarily storing the purified tap water F and removing mixed air, and includes a float switch 21a for detecting the internal water level and a pressure equalizing pipe for keeping the internal pressure equal to the atmospheric pressure. 21b is provided. Also,
A ventilation filter 2 having the property of allowing passage of air and blocking passage of water, bacteria, etc. in the pressure equalizing pipe 21b.
1c is disposed, and the ventilation filter 21c is preferably a sintered body of polyethylene, Teflon, or the like or one obtained by subjecting this to an antibacterial treatment (for example, Ag coating). The tap water F in the water storage tank 1 is automatically replenished into the systern 21 by the pump 22 when the water level drop is detected by the float switch 21a.

As described above, according to the water supply apparatus of the present embodiment, the tap water F fed into the closed electrolyzer 3 can be deflated at the upstream cistern 21. It is possible to secure a stable water supply by preventing the occurrence of variations in
It is possible to reliably prevent a reduction in the efficiency of electrolysis due to the tap water F and air being sent in a mixed state into the closed electrolytic bath 3. The water supply treatment methods described in the first to fourth embodiments can also be applied to this water supply device, and similar actions and effects can be obtained.

As described above, in the first to fifth embodiments, tap water is used as the chlorine ion-containing water, but
Water other than tap water may be used as raw water as long as it contains chlorine ions.

In the first to fifth embodiments, the stored water in the water storage tank is sent to the closed electrolyzer side. However, the water storage tank is eliminated and the pipe end is connected to the water outlet. If the water supply from the tap to the closed electrolyzer is controlled by an electric valve, the circuit structure can be made compact and vibrations during pump operation,
Noise can be eliminated.

Further, in the first to fifth embodiments, the effective chlorine concentration of water obtained by electrolysis is controlled to a predetermined value by correcting the electrolytic current value applied to the pair of counter electrode plates. However, in the second and fourth embodiments including the water supply time setting device, the water supply can be performed at the set water supply time by correcting the energization time to the pair of corresponding electrode plates without changing the electrolytic current value. The generated water can contain a predetermined concentration of available chlorine.

That is, in the second and fourth embodiments, the electrolytic current is applied to the pair of counter electrode plates 3f and 3g in synchronization with the operation of the pump 5 and the opening of the valve 7. If the energization time to the pair of opposing electrode plates 3f and 3g is shorter than the operation time of (1) and the valve 7 opening time (set water supply time), the effective chlorine amount in the water supplied in the set water supply time is kept low. be able to. Specifically, similar to the correction method described above, when the temperature of tap water is lower than the reference temperature range or when the voltage between contacts is higher than the reference voltage range, the energization time is set to be longer than the set water supply time. The amount of available chlorine contained in the water supplied at the set water supply time is controlled by correcting so that it becomes shorter. Of course, the energization time may be corrected using a function with a difference between the reference temperature and the detected temperature or a difference between the reference voltage and the detected voltage as a variable, or using data prepared in advance for each detected temperature or each detected voltage.

[0074]

As described in detail above, according to the invention of claim 1, the electrolytic current value given to the pair of counter electrodes is corrected according to the temperature of the chlorine ion-containing water fed into the closed electrolytic cell. Therefore, even when the temperature of the chlorine ion-containing water changes, it is possible to stably obtain and supply water containing a predetermined concentration of available chlorine. In addition, since chlorine ion-containing water in the course of water supply is electrolyzed in a closed electrolyzer without contact with the outside air, the effective chlorine generated by electrolysis can be effectively used for the desired sterilization. In addition, it is possible to prevent bacteria from entering from the outside and accurately avoid water pollution.

According to the second aspect of the present invention, the temperature of the water containing the chlorine ions to be electrolyzed is detected by the voltage between the electrodes of the pair of counter electrodes instead. There is no need to install the detection means in a closed electrolytic cell or the like, and the signal for correction can be detected with simple wiring. Other effects are the same as those of the first aspect.

According to the third aspect of the present invention, the energization time to the pair of counter electrodes is corrected according to the temperature of the chlorine ion-containing water fed into the closed electrolytic cell. Even when the temperature of the contained water changes, the water supplied at the set water supply time can be made to contain effective chlorine of a predetermined concentration. In addition, since chlorine ion-containing water in the course of water supply is electrolyzed in a closed electrolyzer without contact with the outside air, the effective chlorine generated by electrolysis can be effectively used for the desired sterilization. In addition, it is possible to prevent bacteria from entering from the outside and accurately avoid water pollution.

According to the invention of claim 4, since the temperature of the water containing chlorine ions to be electrolyzed is detected by the voltage between the electrodes at the pair of counter electrodes instead, the water temperature as in the invention of claim 3 is obtained. There is no need to install the detection means in a closed electrolytic cell or the like, and the signal for correction can be detected with simple wiring. Other effects are similar to those of the invention of claim 3.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a water supply device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the closed electrolytic cell shown in FIG.

3 is a configuration diagram of a control system of the water supply device shown in FIG.

FIG. 4 is a program flow of water supply processing according to the first embodiment.

FIG. 5 is a control system configuration diagram of a water supply device according to a second embodiment of the present invention.

FIG. 6 is a program flow of water supply treatment in the second embodiment.

FIG. 7 is a control system configuration diagram of a water supply device according to a third embodiment of the present invention.

FIG. 8 is a program flow of water supply treatment in the third embodiment.

FIG. 9 is a control system configuration diagram of a water supply device according to a fourth embodiment of the present invention.

FIG. 10 is a program flow of water supply treatment in the fourth embodiment.

FIG. 11 is a circuit diagram of a water supply device according to a fifth embodiment of the present invention.

FIG. 12 is a circuit diagram of a conventional water supply device.

[Explanation of symbols]

1 ... Water storage tank, 2 ... Water purifier, 3 ... Closed-type electrolyzer, 3b
... passage, 3c ... inlet, 3d ... alkaline water outlet, 3e ... acidic water outlet, 3f ... cathode plate, 3g ... anode plate, 3i ... water temperature sensor, 4 ... merger, 5 ... pump, 6 ... cooling coil, 7 ...
Valves, 8 ... Flow controller, 11 ... Microcomputer, 12 ... Electrolysis control circuit, 13 ... Water supply control circuit, 14 ... Water supply time setting device, 15 ... Voltage detection circuit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isao Kato 20 Kotobukicho, Isesaki City, Gunma Sanden Co., Ltd. (72) Inventor Hideo Kajima 20 Kotobu Kotobukicho, Isesaki City, Gunma Sanden Co., Ltd. (72) Inventor Makoto Nakamura 20 Kotobukicho, Isesaki City, Gunma Sanden Stock Company

Claims (4)

[Claims] 1. A water supply device for electrolyzing chlorine ion-containing water such as tap water to supply water containing effective chlorine at a predetermined concentration, and chlorine ion-containing water flowing from an inlet and flowing between a pair of opposing electrodes. In the course of passing through the sealed electrolytic cell that can be electrolyzed and flow out from the outlet, start feeding chlorine-containing water into the sealed electrolytic cell based on the water supply start command, and based on the water supply stop command or Water supply control means that stops the feeding of chlorine ion-containing water into the closed electrolytic cell after the set water supply time has elapsed from the start of water supply, and a predetermined electrolysis current according to the feeding of chlorine ion-containing water into the closed electrolytic cell. Electrolysis control means applied to a pair of opposed electrodes, water temperature detection means for detecting the temperature of the chlorine ion-containing water fed into the closed electrolytic cell, and water soaked so that water containing a predetermined concentration of available chlorine is supplied. Equipped an electrolytic current value correcting means for correcting the electrolytic current value applied to the pair of opposed electrodes in accordance with the temperature of the chlorine ion-containing water to be fed into the formula electrolytic cell, the water supply device, characterized in that. 2. A water supply device for electrolyzing chlorine ion-containing water such as tap water to supply water containing effective chlorine at a predetermined concentration, and chlorine ion-containing water flowing from an inlet and flowing between a pair of opposing electrodes. In the course of passing through the sealed electrolytic cell that can be electrolyzed and flow out from the outlet, start feeding chlorine-containing water into the sealed electrolytic cell based on the water supply start command, and based on the water supply stop command or Water supply control means that stops the feeding of chlorine ion-containing water into the closed electrolytic cell after the set water supply time has elapsed from the start of water supply, and a predetermined electrolysis current according to the feeding of chlorine ion-containing water into the closed electrolytic cell. Electrolysis control means applied to the pair of opposing electrodes, voltage detection means for detecting the interelectrode voltage at the pair of opposing electrodes during electrolysis, and the above-mentioned interelectrode electricity so that water containing a predetermined concentration of available chlorine is supplied. Water supply device according to claim equipped and an electrolytic current value correcting means for correcting the electrolytic current value applied to the pair of opposed electrodes, that in accordance with the. 3. A water supply device for electrolyzing water containing chlorine ions such as tap water to supply water containing effective chlorine of a predetermined concentration, and water containing chlorine ions containing water flowing from an inlet to flow between a pair of opposing electrodes. A closed electrolyzer that can be electrolyzed in the course of passing through the outlet and flows out from the outlet, and starts feeding chlorine-containing water into the closed electrolyzer based on the water supply start command, and the set water supply time has elapsed from the start of water supply. Water supply control means for stopping the feeding of chlorine ion-containing water into the closed electrolytic cell later, and electrolysis that applies a predetermined electrolytic current to the pair of opposing electrodes in accordance with the feeding of chlorine ion-containing water into the closed electrolytic cell Control means, water temperature detecting means for detecting the temperature of the chlorine ion-containing water fed into the closed electrolytic cell, and closed type electric power so that the water supplied at the set water supply time contains effective chlorine of a predetermined concentration. Depending on the temperature of the chlorine ion-containing water to be fed into the tank equipped with a energizing time correction means for correcting the energization time of the pair of opposed electrodes, the water supply device, characterized in that. 4. A water supply device for electrolyzing water containing chlorine ions such as tap water to supply water containing effective chlorine of a predetermined concentration, and water containing chlorine ions containing water flowing from between an inlet and flowing between a pair of opposing electrodes. A closed electrolyzer that can be electrolyzed in the course of passing through the outlet and flows out from the outlet, and starts feeding chlorine-containing water into the closed electrolyzer based on the water supply start command, and the set water supply time has elapsed from the start of water supply. A water supply control means for stopping the feeding of chlorine ion-containing water into the closed electrolytic cell later, and an electrolysis that gives a predetermined electrolytic current to the pair of opposing electrodes in accordance with the feeding of the chlorine ion containing water into the closed electrolytic cell. Control means, voltage detection means for detecting the inter-electrode voltage at the pair of opposing electrodes during electrolysis, and the voltage applied to the inter-electrode voltage so that the water supplied at the set water supply time contains a predetermined concentration of available chlorine. Equipped with a energizing time correction means for correcting the energization time of the pair of opposed electrodes Te, it water supply apparatus according to claim.