JPH06304560A - Device for producing electrolyzed ionized water - Google Patents

Abstract

PURPOSE:To restrain the damage of the electrode by quickly lowering the hydrogen ion concentration in an electrode chamber housing an electrode to be switched from positive to negative. CONSTITUTION:In this device for producing electrolyzed inside water, an electrolyzer 10 where a pair of electrodes 12, 13 are arranged inside opposite to each other and also a diaphragm 16 is arranged between both the electrodes to form a pair of electrode chambers 14, 15 each housing the electrodes and water to be treated flows into and out of both the electrode chambers, and an electrode switching means 20 for switching DC voltage applied to the both the electrodes 12, 13 between positive and negative are provided. A voltage application stoppage means (a voltage circuit 30, a controller 50) for stopping the voltage application to both the electrodes for a prescribed time when the voltage application is switched, and an alkaline ionized water introducing means (a storage tank 40, stop valves V5, V6) for feeding alkaline ionized water to the electrode chamber housing the electrode which is made as a positive one before the voltage application is switched when the voltage application is stopped by the voltage application stoppage means are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic ionized water producing apparatus for electrolyzing treated water such as water or saline to produce acidic ionized water and alkaline ionized water.

[0002]

2. Description of the Related Art An apparatus of this type is disclosed in, for example, Japanese Patent Laid-Open No. 4-33.
No. 0987, it is used for a long time without switching the forward and reverse of the DC voltage applied to both electrodes,
There is a problem that calcium, sodium, etc. adhere to the surface of the minus side electrode in a layered form to reduce the current flow rate, and the desired electrolytic ionic water cannot be obtained. To solve this, the DC voltage applied to both electrodes It is generally practiced to switch between normal and reverse of the above to remove the above-mentioned deposit from the electrode (hereinafter, this is referred to as reverse electrolysis cleaning).

[0003]

By the way, in an electrolytic ionized water generator, an electrode in which platinum is plated on the surface of a titanium base material or platinum iridium is fired to reinforce the electrode is adopted in consideration of catalytic function and durability. However, for example, when switching from the ionized water generation state (positive voltage applied state) to the reverse electric cleaning state (reverse voltage applied state), the electrode switched from positive to negative may be significantly affected and the current flow rate may decrease. . This is because the concentration of hydrogen ions H ^{+ in} the electrode chamber in which the positive electrode is housed is high when a positive voltage is applied before reverse electrolysis cleaning, and the hydrogen ions H ⁺ are switched from positive to negative during reverse electrolysis cleaning. Adsorbed on the surface of the electrode, and platinum-plated on the surface of the titanium Ti base material, hydrogen dissolves into the platinum film and reacts with the titanium base material inside, reacting poorly with non-metal and poor electrical conductivity. This is because titanium hydride TiH ₄ that expands in volume is generated, which lifts the platinum plating at the interface between the platinum plating and the titanium base material and separates the platinum plating, and also burns platinum iridium on the surface of the titanium base material. In the burned product, iridium oxide IrO ₂ and hydrogen in the fired product are reacted with each other to be reduced, and metal iridium which is easily dissolved in water is generated, which is eluted to expose the titanium base material and expose the exposed titanium group. This is because the material reacts with hydrogen to produce titanium hydride that is nonmetallic and has poor electrical conductivity. Incidentally, such a phenomenon, that is, hydrogen embrittlement occurs in any case as long as the electrode is made of a metal material. The present invention has been made to address the above-described problems, and its object is, for example, a hydrogen ion concentration in an electrode chamber that accommodates an electrode that can be switched from positive to negative when switching from a state of producing ion water to a reverse electrolysis cleaning state. Is to be quickly lowered to prevent the electrode from being damaged.

[0004]

In order to achieve the above object, in the first aspect of the present invention, the electrolytic ionized water producing device is provided with a pair of electrodes made of a metal material facing each other inside and at the same time. A pair of electrode chambers are formed by placing a diaphragm between the electrodes to accommodate each electrode, and an electrolytic cell in which treated water flows in and out of these electrode chambers, and a positive DC voltage applied to both electrodes Electrode switching means for switching the reverse, voltage application stopping means for stopping the voltage application to both electrodes for a set time when switching the voltage application by the electrode switching means, and an electrode for accommodating an electrode which is a positive electrode before the voltage application switching. The chamber was provided with an alkaline ionized water introducing means for supplying alkaline ionized water when the voltage application was stopped by the voltage application stopping means. In this case, it is desirable that the amount of the alkaline ionized water supplied through the alkaline ionized water introducing means be such that the electrode chamber is neutralized or alkalized.

In the second aspect of the present invention, the electrolytic ionized water generator is provided with a pair of electrodes made of a metallic material facing each other inside, and a diaphragm is provided between the electrodes to accommodate each electrode. A pair of electrode chambers are formed so that treated water can flow in and out of the two electrode chambers, an electrode switching unit for switching the direct voltage applied to both electrodes between positive and reverse, and an electrode switching unit. A voltage application stopping means for stopping the voltage application to both electrodes for a set time when the voltage application is switched, and a reverse ion water introducing means for supplying the reverse ion water to each electrode chamber when the voltage application is stopped by the voltage application stopping means are provided. It was configured. In this case, it is desirable that the amount of the reverse ionized water supplied through the reverse ionized water introducing means be such that the inside of each electrode chamber is substantially neutralized.

[0006]

In each electrolyzed ionized water generator according to the present invention, when treated water such as water or saline is flowed in both electrode chambers of the electrolytic cell in the positive voltage applied state, the treated water in the electrolytic cell is treated. Is electrolyzed and acidic ionized water with increased hydrogen ions is discharged from the electrode chamber of the positive electrode, and alkaline ionized water with increased hydroxide ions is discharged from the electrode chamber of the negative electrode.

In the electrolytic ionized water generator according to the first aspect of the invention, the voltage application stopping means stops the voltage application to both electrodes for a set time when the electrode switching means switches the voltage application, and when the voltage application is stopped, the alkaline ion is generated. Alkaline ionized water is supplied to the electrode chamber accommodating the positive electrode by the water introducing means before switching the voltage application. For this reason, the hydrogen ion concentration in the electrode chamber to which the alkaline ionized water is supplied is rapidly lowered, and it is possible to prevent the electrodes in the electrode chamber from being damaged by hydrogen ions when the voltage switching is switched by the electrode switching means. Therefore, the life of the electrode can be extended, and frequent reverse electrolysis cleaning can be performed, and desired ionized water can be stably obtained without lowering the electrification rate.

In the electrolytic ionized water producing apparatus according to the first aspect of the invention, for example, alkaline ionized water is supplied to the electrode chamber containing the electrode that can be switched from positive to negative when switching from the ionized water producing state to the reverse electrolysis cleaning state. By doing so, the hydrogen ion concentration is reduced, so the electrode chamber is neutralized in a shorter time and with a smaller amount of water than the one that supplies neutral water to the electrode chamber to reduce the hydrogen ion concentration. can do.

On the other hand, in the electrolytic ionized water generator according to the second aspect of the invention, when the voltage switching by the electrode switching means is switched, the voltage application stopping means stops the voltage application to both electrodes for a set time, and when the voltage application is stopped, the reverse ion Before the voltage application is switched by the water introducing means, alkaline ionized water is supplied to the electrode chamber containing the positive electrode and acidic ionized water is supplied to the electrode chamber containing the negative electrode. . Therefore, the electrolyzed ionized water in both electrode chambers is quickly neutralized, and it is possible to prevent the electrodes from being damaged by hydrogen ions when the voltage application is switched by the electrode switching means. Therefore,
It is possible to prolong the service life of the electrode, and it is possible to perform frequent reverse electrolysis cleaning, and it is possible to stably obtain desired ionized water without lowering the energization rate.

Further, in the electrolytic ionized water producing apparatus according to the second aspect of the present invention, when the ionized water producing state is switched to the reverse electrolysis cleaning state, the electrolyzed ionized water in both electrode chambers is quickly neutralized, so that the reverse electrolysis is performed. From the initial stage of cleaning, acidic ion water with increased hydrogen ions is generated in the electrode chamber of the positive electrode, and alkaline ionized water with increased hydroxide ions is generated in the electrode chamber of the negative electrode. Therefore, by switching the outflow passages of each ionized water in accordance with the reverse electrolysis cleaning, it is possible to generate and use the electrolyzed ionized water in the reverse voltage application state during the reverse electrolysis cleaning as in the positive voltage application state. It is possible to greatly improve the production capacity of electrolytic ionized water.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of an electrolytic ionized water generator according to the first invention. This electrolytic ionized water generator comprises an electrolytic cell 10, an electrode switching device 20, a power supply circuit 30, a storage tank 40 and a controller 50. It is composed by. The electrolytic cell 10 includes a cell body 11 having a pair of inlets 11a and 11b and a pair of outlets 11c and 11d, and the cell body 1
It is composed of a pair of electrodes 12 and 13 arranged opposite to each other in 1 and a diaphragm 16 which is arranged between the electrodes 12 and 13 to form electrode chambers 14 and 15 which accommodate the electrodes 12 and 13, respectively. As the electrodes 12 and 13, those obtained by baking platinum-plated or platinum-iridium on the surface of a titanium base material are adopted, and the electrode chamber 14 is connected to the inflow port 11a and the outflow port 11c, and the electrode chamber 15 is connected to the electrode chamber 15. Is connected to the inflow port 11b and the outflow port 11d. In addition, each inflow port 11a, 11
The water valve V1 whose operation is controlled by the controller 50 and each manually adjustable flow rate adjusting valve V are shown in b.
2, V3 are interposed between the introduction pipes P1 and P2 to supply approximately the same amount of tap water, and the outlets 11c and 11d are connected to the outlet pipes P3 and P4. . The water valve V1 is a well-known electromagnetic opening / closing valve, and its opening operation or closing operation is performed after receiving a valve opening signal or a valve closing signal from the control device 50.

The electrode switching device 20 switches between direct and reverse of the DC voltage applied to both electrodes 12 and 13 in response to a signal from the control device 50. The control device is in the state shown by the phantom line in the figure. Power supply circuit 3 when receiving positive power signal from 50
When the negative electrode of 0 is connected to the electrode 12 and the positive electrode is connected to the electrode 13, and when a reverse signal is received from the control device 50 in the state shown by the solid line in the figure, the power supply circuit 3
The negative electrode of 0 is connected to the electrode 13, and the positive electrode is connected to the electrode 12. The power supply circuit 30 converts an AC voltage into a DC voltage having a predetermined value, so that when the OFF signal is received from the control device 50, the DC voltage between the minus electrode and the plus electrode becomes zero, and the control device 50 When receiving the ON signal, a DC voltage having a predetermined value is applied between the minus electrode and the plus electrode.

The storage tank 40 stores a required amount of alkaline ionized water, and the alkaline ionized water stored therein is dropped to drop the electrolytic chamber 14 or 15 of the electrolytic cell 10.
Valve V which is installed at a position higher than the electrolytic cell 10 so as to be supplied to
5 is connected to the introduction pipe P1 through a connection pipe P6 which is interposed, and is also connected to the introduction pipe P2 through a connection pipe P7 which is interposed by an opening / closing valve V6 controlled by the control device 50. In addition, in the storage tank 40, part of the alkaline ionized water discharged through the outlet pipe P3 when a positive voltage is applied is pumped up and stored by means such as a pump (not shown), and the water level sensor 41 and An overflow pipe 42 is provided. Open / close valve V
Reference numerals 5 and V6 are acid / alkali resistant valves, which are driven by an electric motor (not shown), and their opening operation or closing operation is performed after receiving a valve opening signal or a valve closing signal from the control device 50. It is designed to be performed in a predetermined time (approximately 5 seconds).

The control device 50 includes an ion water generation switch 5
1, a reverse electric washing switch 52 and a stop switch 53 are provided, and the water valve V1, the electrode switching device 20, the power supply circuit 30 are operated based on the operation of each switch 51, 52, 53.
Also, the operation of both on-off valves V5, V6, etc. is controlled, and each operation described below can be obtained by operating each switch 51, 52, 53.

When the electrolytic ionized water generator is stopped, the water valve V1 and the open / close valves V5, V6
Is closed and the electrode switch 20 is held in the state shown by the solid line in the figure,
The DC voltage between the negative electrode and the positive electrode of the power supply circuit 30 is set to zero, and when the ion water generation switch 51 of the control device 50 is operated in such a state, a valve opening signal is sent from the control device 50 to the water valve V1. Then, the water valve V1 is opened and the control device 50 outputs an ON signal to the power supply circuit 30 to apply a DC voltage of a predetermined value between the negative electrode and the positive electrode of the power supply circuit 30, which is the electrode switching device 20. Via the electrodes 12 of the electrolytic cell 10,
A positive voltage is applied to 13.

Therefore, tap water as treated water is supplied to the electrolysis chambers 14 and 15 of the electrolytic cell 10 through the water valve V1, the flow rate adjusting valves V2 and V3, and the introduction pipes P1 and P2, and this is the electrolytic cell 10. The acidic ionized water, which has been electrolyzed in the positive electrode 13 and has increased hydrogen ions, is discharged from the electrode chamber 15 of the positive electrode 13 through the outlet pipe P4 and can be used. Alkaline ionized water with increased ions is led out of P3
It is discharged through and becomes usable. In this state, if it is used for a long time, calcium, sodium, etc. contained in tap water adheres to the surface of the negative electrode 12.

By the way, when the reverse washing switch 52 of the controller 50 is operated in the above-mentioned ionized water producing state,
An OFF signal is output from the control device 50 to the power supply circuit 30, an open valve signal is output to the open / close valve V6, and a reverse current signal is output to the electrode switching device 20, and a direct current between the negative electrode and the positive electrode of the power supply circuit 30 is output. The voltage is set to zero, the on-off valve V6 is opened for a predetermined time, and the electrode switching device 20 switches the connection of the electrodes from the state of the solid line to the state of the phantom line in FIG. Is connected to the positive electrode of the power supply circuit 30, and the electrode 13 is connected to the negative electrode.

Therefore, when the open / close valve V6 is opened, the voltage is not applied to the storage tank 40 and the electrode chamber 1 is closed.
Alkaline ionized water is sequentially supplied to 5, and the concentration of hydrogen ions remaining in the electrode chamber 15 is rapidly lowered to be neutralized. After that, an ON signal is output from the control device 50 to the power supply circuit 30 and a closing signal is output to the opening / closing valve V6, and a predetermined DC voltage is applied between the negative electrode and the positive electrode of the power supply circuit 30 and opening / closing is performed. The valve V6 is closed for a predetermined time so that the electrode 13 is not exposed to ion water having a high hydrogen ion concentration when switching from the positive voltage application to the reverse voltage application, and the electrode 12 is
The deposits such as calcium and sodium are peeled off from the electrolytic bath 10 and discharged together with the treated water to the outside of the electrolytic cell 10 for reverse electrolysis cleaning.

When the ion water generating switch 51 of the control device 50 is operated in the above-mentioned reverse electrolysis cleaning state, an OFF signal is output from the control device 50 to the power supply circuit 30 and an opening signal is output to the opening / closing valve V5. Then, a positive electric signal is output to the electrode switching device 20, the DC voltage between the negative electrode and the positive electrode of the power supply circuit 30 is set to zero, and the opening / closing valve V5 is opened at a predetermined time. The connection of the electrodes is switched from the state of the phantom line in the figure to the state of the solid line so that the electrode 12 of the electrolytic cell 10 is connected to the negative electrode of the power supply circuit 30 and the electrode 13 is connected to the positive electrode.

Therefore, when the opening / closing valve V5 is open, the voltage is not applied to the storage tank 40 to the electrode chamber 1
Alkaline ionized water is sequentially supplied to 4, and the concentration of hydrogen ions remaining in the electrode chamber 14 is rapidly lowered to be neutralized. After that, an ON signal is output from the control device 50 to the power supply circuit 30 and a valve closing signal is output to the opening / closing valve V5, and a predetermined DC voltage is applied between the negative electrode and the positive electrode of the power supply circuit 30 and opening / closing is performed. The valve V5 is closed for a predetermined time so that the electrode 12 is not exposed to ion water having a high hydrogen ion concentration when switching from the reverse voltage application to the positive voltage application.

When the stop switch 53 of the controller 50 is operated in the above-described ionized water producing state, an OFF signal is output from the controller 50 to the power supply circuit 30 and a valve closing signal is output to the water valve V1. Then, the DC voltage between the negative electrode and the positive electrode of the power supply circuit 30 is set to zero, the water valve V1 is closed, and the electrolytic ionized water generator is stopped.

When the stop switch 53 of the control device 50 is operated in the above-mentioned reverse electrolysis cleaning state, the control device 50 is operated.
Outputs an OFF signal to the power supply circuit 30, a water valve V1 outputs a valve closing signal, and an open / close valve V5 outputs an valve opening signal and the electrode switching device 2
A positive electric signal is output to 0, the DC voltage between the negative electrode and the positive electrode of the power supply circuit 30 is set to zero, the water valve V1 is closed, and the opening / closing valve V5 is opened for a predetermined time and the electrodes are switched. The connection of the electrodes is switched from the state of the phantom line in the figure to the state of the solid line in the container 20, and the electrode 12 of the electrolytic cell 10 is connected to the negative electrode of the power supply circuit 30 and the electrode 13 is connected to the positive electrode.

Therefore, when the open / close valve V5 is open, the voltage is not applied to the storage tank 40 and the electrode chamber 1 is closed.
Alkaline ionized water is sequentially supplied to 4, and the concentration of hydrogen ions remaining in the electrode chamber 14 is rapidly lowered to be neutralized. After that, the control device 50 outputs a closing signal to the opening / closing valve V5 to close the opening / closing valve V5 in a predetermined time,
The electrolyzed ionized water generator is stopped. Therefore, even if the ion generation switch 51 of the control device 50 is operated after the stop switch 53 is operated, the electrode 12 connected to the minus electrode of the power supply circuit 30 is not exposed to ion water having a high hydrogen ion concentration.

In summary, in the present embodiment, the voltage application to the electrodes 12 and 13 is stopped for the set time by the cooperative action of the control device 50 and the power supply circuit 30 at the time of switching the voltage application by the electrode switch 20. At the time of stop, alkaline ionized water is supplied from the storage tank 40 to the electrode chamber containing the positive electrode before switching the voltage application. Therefore, the hydrogen ion concentration in the electrode chamber to which the alkaline ionized water is supplied is rapidly lowered and neutralized, and when the voltage application is switched by the electrode switching device 20,
The electrodes in the electrode chamber can be suppressed from being attacked by hydrogen ions. Therefore, the life of the electrode can be extended, and frequent reverse electrolysis cleaning can be performed, and desired ionized water can be stably obtained without lowering the electrification rate.

Further, for example, when the alkaline ionized water is supplied to the electrode chamber 15 for accommodating the electrode 13 which can be switched from the positive to the negative when the ionized water production state is switched to the reverse electrolysis cleaning state, the hydrogen ion concentration is lowered. Therefore, it is possible to neutralize the electrode chamber 15 in a short time and with a small amount of water as compared with a case where neutral water is supplied to the electrode chamber 15 to reduce the hydrogen ion concentration.

In the above embodiment, tap water is used as the treated water directly, but it is also possible to use salt water contained in the tank and supplied to each electrode chamber by the electric pump as the treated water. Further, in the above embodiment, the electrode chamber in which the hydrogen ion concentration is high is almost neutralized when the voltage application is switched by the electrode switch 20.
It may be carried out by making the inside of the electrode chamber alkaline, or may be carried out by slightly leaving hydrogen ions in the electrode chamber. Further, in the above embodiment, the alkaline ionized water is supplied to the electrode chamber with the water valve V1 opened. However, when the alkaline ionized water is supplied to the electrode chamber, the water valve V1 is supplied.
It is also possible to carry out by closing.

FIGS. 2, 3 and 4 show an embodiment of the electrolytic ion water producing device according to the second invention. This electrolytic ion water producing device comprises an electrolytic cell 110 and an electrode switch 120.
The power supply circuit 130, the storage tanks 140A and 140B, and the control device 150. Electrolyzer 110
Is a pair of inflow ports 111a and 111b and a pair of outflow ports 1
A tank main body 111 having 11c and 111d, and a pair of electrodes 112 and 113 arranged to face each other in the tank main body 111,
Each electrode 11 is arranged between these electrodes 112 and 113.
2 and 113 are formed by a diaphragm 116 that forms electrode chambers 114 and 115.
The titanium base material 13 is formed by baking platinum surface or platinum iridium on the surface of the titanium base material, and the electrode chamber 114 is communicated with the inflow port 111a and the outflow port 111c.
An inlet 111b and an outlet 111d communicate with the electrode chamber 115. Further, a water valve V11 whose operation is controlled by the control device 150 and a manually adjustable flow rate adjusting valve V12 are provided at the respective inlets 111a and 111b.
It is configured such that approximately the same amount of tap water is supplied through the respective introduction pipes P11 and P12 which are provided with the V13, and the outlet pipes P13 and P14 are connected to the respective outlet ports 111c and 111d. The water valve V11 is a well-known electromagnetic opening / closing valve, and its opening operation or closing operation is performed after receiving a valve opening signal or a valve closing signal from the control device 150.

By the way, in the present embodiment, both the introduction pipes P11 and P12 are connected by the connection pipe P15 on the electrolytic cell 110 side from the both flow rate adjusting valves V12 and V13, and the introduction pipe P11 and the connection pipe P15 are connected. And the connecting portion between the introducing pipe P12 and the connecting pipe P15 are provided with communication switching valves V14 and V15, respectively. In the connecting pipe P15, an ON signal is received from the control device 150 to drive the OF.
An electric pump PM11 that receives the F signal and stops is provided. On the other hand, both outlet pipes P13 and P14 are connected pipe P16.
And the connection portions of the outlet pipe P13 and the connecting pipe P15 and the connecting portions of the outlet pipe P14 and the connecting pipe P15 are provided with communication switching valves V16 and V17, respectively. Further, on the outflow side of the communication switching valves V16, V17 of the outlet pipes P13, P14, the flow path switching valve V18,
Each V19 is provided.

Each communication switching valve V14, V15, V1
6, V17 is a valve that can withstand acid and alkali,
It is driven by an electric motor (not shown), and in response to a closed loop signal from the control device 150, both electrode chambers 114, 115, both inlet pipes P11, P12, both outlet pipes P13, P14, both connecting pipes P15, The communication of the pipeline is switched so that a closed loop is formed by P16, and the switching operation is performed for a predetermined time (approximately 5 seconds) after receiving an open loop signal or a return signal from the control device 150.
It is supposed to be done in. On the other hand, each of the flow path switching valves V18 and V19 is a valve that can withstand acid / alkali, and is driven by an electric motor (not shown) so as to respond to each ion water in accordance with a positive electric signal or a reverse electric signal from the control device 150. The switching operation is performed at a predetermined time (about 5 seconds) after receiving a positive or reverse electric signal from the control device 150, and FIG. The state after receiving the signal and operating is shown.

The electrode switching device 120 switches between direct and reverse of the DC voltage applied to both electrodes 112 and 113 according to a signal from the control device 150, and is controlled by the control device 150 in the state shown in FIG. When the negative electrode of the power supply circuit 130 is connected to the electrode 112 and the positive electrode is connected to the electrode 113 when the positive electric signal is received, and when the reverse electric signal is received from the control device 150 in the state shown in FIG. In addition, the negative electrode of the power supply circuit 130 is connected to the electrode 113, and the positive electrode is connected to the electrode 112. The power supply circuit 130 converts an AC voltage into a DC voltage having a predetermined value, so that when the OFF signal is received from the control device 150, the DC voltage between the negative electrode and the positive electrode becomes zero, and from the control device 150. When receiving the ON signal, a DC voltage having a predetermined value is applied between the minus electrode and the plus electrode.

The storage tank 140A on the left side of FIG. 2 stores a required amount of alkaline ionized water, and has a water level sensor 141A installed therein, and the controller 1
A supply pipe P17 having an electric pump PM12 controlled by 50 can supply it to a desired position. On the other hand, the storage tank 140B on the right side of FIG.
It stores a required amount of acidic ionized water, has a water level sensor 141B installed inside, and has a controller 15
It can be supplied to a desired place by a supply pipe P18 having an electric pump PM13 controlled by 0. The storage tanks 140A and 140B are provided with overflow pipes 142A and 142B, respectively.

The control device 150 includes a positive power operation switch 15
1, reverse operation switch 152 and stop switch 153,
In addition, an alkaline ionized water supply switch 154 and an acidic ionized water supply switch 155 are provided, and each switch 1
Operation of 51, 152, 153, 154, 155 and water level sensors 141A, 14 of the respective storage tanks 140A, 140B
Water valve V11, electrode switcher 1 based on 1B
20, power supply circuit 130, communication switching valves V14, V1
5, V16, V17, each flow path switching valve V18, V19
And the operation of each electric pump PM1, PM2, PM3, etc. is controlled, and each switch 151, 15
By operating 2, 153, 154 and 155, the respective operations described below can be obtained.

When the electrolytic ionized water generator is stopped, for example, the water valve V11 is closed, and the communication switching valves V14, V15, V16, V17 and the flow path switching valves V18, V19 are shown in FIG. State, each electric pump PM1, PM2, PM3 is stopped,
Further, the electrode switching device 120 is held in the state shown in FIG.
The DC voltage between the negative electrode and the positive electrode of the power supply circuit 130 is set to zero, and in such a stopped state, the control device 15
When the positive electric switch 151 of 0 is operated, a valve opening signal is output from the control device 150 to the water valve V11 to open the water valve V11, and the control device 1
An ON signal is output from the power supply circuit 130 from 50, and a DC voltage of a predetermined value is applied between the negative electrode and the positive electrode of the power supply circuit 130, and this is applied to both electrodes 112, 113 of the electrolytic cell 110 via the electrode switch 120. A positive voltage is applied.

Therefore, the water valve V11, the flow rate adjusting valves V12 and V13, and the communication switching valve V1.
4, V15 and each introduction pipe P11, P12 through the electrolytic cell 1
The tap water is supplied to each of the electrolysis chambers 114 and 115 of 10 and the acidic ionized water in which the hydrogen ions are increased from the electrode chamber 115 of the plus side electrode 113 which is electrolyzed in the electrolysis tank 110 is a communication switching valve V17, Flow path switching valve V1
9 and the outlet pipe P14 into the storage tank 140B for storage, and also the electrode chamber 114 of the negative electrode 112.
Alkaline ion water having increased hydroxide ions is connected to the communication switching valve V16, the flow path switching valve V18, and the outlet pipe P.
It flows into the storage tank 140A through 13 and is stored.

When the water level in each of the storage tanks 140A, 140B reaches the upper limit set value, the water level sensor 141A,
141B, and based on this, the control device 150
A water valve V11 outputs a closing signal to the water valve V11 to close the water valve V11.
The OFF signal is output to the DC voltage between the negative electrode and the positive electrode of the power supply circuit 130 to zero. Each ionized water stored in each storage tank 140A, 140B is
Alkaline ionized water supply switch 15 of controller 150
4 or by operating the acidic ionized water supply switch 155 to operate each electric pump PM12 or PM13, it can be supplied to a desired location for use, and the water level in each of the storage tanks 140A and 140B can be increased by such use. When it reaches the lower limit setting value, this is
41A and 141B, and based on this, the control device 150 outputs a valve opening signal to the water valve V11 to open the water valve V11, and the control device 150 outputs an ON signal to the power supply circuit 130 to supply power. A DC voltage having a predetermined value is applied between the negative electrode and the positive electrode of the circuit 130, and as described above, each ion water is generated and stored in each storage tank 140A, 140B.

By the way, the reverse electric actuation switch 152 of the control device 150 is operated in the above-mentioned ionized water generation state in which the positive voltage is applied.
When is operated, an OFF signal is output from the control device 150 to the power supply circuit 130, and the communication switching valves V14, V1.
5, a closed loop signal is output to V16 and V17, an ON signal is output to the electric pump PM11, and the electrode switch 120
A reverse voltage signal is output to both flow path switching valves V18 and V19 to reduce the DC voltage between the negative electrode and the positive electrode of the power supply circuit 130 to zero, and each communication switching valve V
14, V15, V16, V17 and double channel switching valve V1
8 and V19 are switched from the state of FIG. 3 to the state of FIG. 4 in a predetermined time, the electric pump PM11 is driven, and the electrode switching unit 120 connects the electrodes from the state of FIG. 3 in a predetermined time. The electrolytic cell 1 is switched to the state shown in FIG.
The electrode 112 of 10 is connected to the plus electrode of the power supply circuit 130, and the electrode 113 is connected to the minus electrode.

Accordingly, the alkaline ionized water in the electrode chamber 114 is supplied to the electrode chamber 115 by the action of the electric pump PM11 while the voltage application is stopped and the electrode chamber 1
The acidic ionized water in 15 is supplied to the electrode chamber 114, and the ionized water in both electrode chambers 114 and 115 is mixed and neutralized. Then, from the control device 150, each communication switching valve V1
4, a return signal is output to V15, V16, and V17, and an OFF signal is output to the electric pump PM11.
ON signal is output to 0, each communication switching valve V14,
V15, V16 and V17 are switched from the state of FIG. 4 to the state of FIG. 3 at a predetermined time, and the electric pump PM1
1 is stopped, and a predetermined DC voltage is applied between the negative electrode and the positive electrode of the power supply circuit 130. As a result, when switching from the positive voltage application to the reverse voltage application, the electrode 1
13 is not exposed to ionized water having a high hydrogen ion concentration, and the deposits such as calcium and sodium adhering when a positive voltage is applied are peeled off from the electrode 112 at the initial stage of the reverse voltage application and are discharged out of the electrolytic cell 10 together with the treated water. Then, reverse electrolysis cleaning is performed.

By the way, when switching from the positive voltage application to the reverse voltage application, both flow path switching valves V18 and V19 are switched from the state shown in FIG. 3 to the state shown in FIG. 4, and the inside of both electrode chambers 114 and 115 are changed. Since the ionized water is mixed and neutralized, the positive electrode 11
In the electrode chamber 1 of the negative electrode 113, acidic ionized water with increased hydrogen ions is generated in the second electrode chamber 114.
At 15, alkaline ionized water with increased hydroxide ions is generated, and acidic ionized water flows from the electrode chamber 114 to the storage tank 140B through the communication switching valve V16, the flow path switching valve V18, and the outlet pipe P14, and the alkaline ionized water is supplied to the electrode. From the chamber 115 through the communication switching valve V17, the flow path switching valve V19 and the outlet pipe P13 to the storage tank 140.
It flows to A.

When the positive-current actuating switch 151 of the controller 150 is operated in the above-described ionized water generation state in which the reverse voltage is applied, the controller 150 causes the power circuit 130 to OF
F signal is output, and each communication switching valve V14, V15,
A closed loop signal is output to V16 and V17, an ON signal is output to the electric pump PM11, a positive electric signal is output to the electrode switching device 120 and the two flow path switching valves V18 and V19, and a positive electrode and a negative electrode of the power supply circuit 130 are output. The DC voltage between the electrodes is set to zero and each communication switching valve V1
4, V15, V16, V17 are changed from the state of FIG. 3 to the state of FIG.
9 is switched from the state of FIG. 4 to the state of FIG. 3 at a predetermined time, and the electric pump PM11 is driven,
From the state of FIG. 4 to the state of FIG.
Then, the electrode 112 of the electrolytic cell 110 is connected to the negative electrode of the power supply circuit 130 and the electrode 113 is connected to the positive electrode.

Therefore, when the voltage application is stopped, the acidic ionized water in the electrode chamber 114 is supplied to the electrode chamber 115 by the action of the electric pump PM11 and the alkaline ionized water in the electrode chamber 115 is supplied to the electrode chamber 114. , The ionized water in both electrode chambers 114 and 115 is mixed and neutralized. Then, from the control device 150, each communication switching valve V1
4, a return signal is output to V15, V16, and V17, and an OFF signal is output to the electric pump PM11.
ON signal is output to 0, each communication switching valve V14,
V15, V16 and V17 are switched from the state of FIG. 4 to the state of FIG. 3 at a predetermined time, and the electric pump PM1
1 is stopped, and a predetermined DC voltage is applied between the negative electrode and the positive electrode of the power supply circuit 130. As a result, when switching from the reverse voltage application to the positive voltage application, the electrode 1
12 is not exposed to ionized water having a high hydrogen ion concentration, and the deposits such as calcium and sodium adhered when the reverse voltage is applied are peeled off from the electrode 113 at the initial stage of the application of the positive voltage and are discharged out of the electrolytic cell 10 together with the treated water. Then, reverse electrolysis cleaning is performed.

By the way, when switching from the reverse voltage application to the positive voltage application, both flow path switching valves V18 and V19 are switched from the state shown in FIG. 4 to the state shown in FIG. Since the ion water is mixed and neutralized, the positive electrode 11
In the electrode chamber 1 of the negative electrode 112, acidic ionized water with increased hydrogen ions is generated in the electrode chamber 115 of the third electrode
At 14, alkaline ionized water with increased hydroxide ions is generated, and acidic ionized water flows from the electrode chamber 115 to the storage tank 140B through the communication switching valve V17, the flow path switching valve V19 and the outlet pipe P14, and the alkaline ionized water is fed to the electrode. From the chamber 114 through the communication switching valve V16, the flow path switching valve V18 and the outlet pipe P13 to the storage tank 140.
It flows to A.

Further, when the stop switch 153 of the controller 150 is operated in the above-described respective ionized water producing states, an OFF signal is output from the controller 150 to the power supply circuit 130 and a valve closing signal is transmitted to the water valve V11. The DC voltage between the negative electrode and the positive electrode of the power supply circuit 130 is output to zero and the water valve V is output.
11 is closed and the electrolytic ionized water generator is stopped. Therefore, when the positive voltage applied ionized water generation state is stopped, the electrode switch 120 and the two flow path switching valves V18 and V19 are stopped in the state of FIG. 3, and the reverse voltage applied ionized water generation is performed. When the state is changed to the stopped state, the electrode switch 120 and the two flow path switching valves V18 and V19 are stopped in the state shown in FIG.

In summary, in the present embodiment, the control device 15 is used when switching the voltage application by the electrode switching device 120.
0 and the power supply circuit 130 cooperate to produce both electrodes 112, 1
The voltage application to 13 is stopped for a set time, and when this voltage application is stopped, each communication switching valve V14, V15, V16, V1
7 and an electric pump PM11 are used to supply alkaline ionized water to the electrode chamber containing the positive electrode before switching the voltage application by the reverse ionized water introducing means and the electrode containing the negative electrode. Acidic ionized water is supplied to the chamber. Therefore, the electrolytic ionized water in both electrode chambers is quickly neutralized, and the electrode switch 120
When switching the voltage application by the electrodes 112, 113
Can be suppressed from being attacked by hydrogen ions. Therefore, the life of the electrode can be extended, and frequent reverse electrolysis cleaning can be performed, and desired ionized water can be stably obtained without lowering the electrification rate.

Further, when switching the voltage application state from the positive voltage application to the reverse voltage application or vice versa, both flow path switching valves V18 and V19 are switched from the state of FIG. 3 to the state of FIG. 4 or vice versa. And both electrode chambers 114,
Since the ionized water in 115 is mixed and neutralized, acidic ionized water in which hydrogen ions are increased is generated in the electrode chamber of the positive side electrode from the initial stage of voltage application, and hydroxyl acid is generated in the electrode chamber of the negative side electrode. Alkaline ionized water with increased ions is generated, acidic ionized water flows into the storage tank 140B, and alkaline ionized water flows into the storage tank 140A. Therefore, not only the ion water generated when the positive voltage is applied but also the ion water generated when the reverse voltage is applied can be effectively stored by being stored in the storage tanks 140A and 140B, and the generation capacity of the electrolytic ion water is significantly increased. Can be improved.

In the above embodiment, the communication switching valve V
14, V15, V16, V17 and the electric pump PM11 constitute a reverse ionized water introducing means, and the power supply circuit 130
The reverse ionized water is supplied to the electrode chambers 114 and 115 when the voltage application is stopped by the cooperative action of the control device 150 and the control device 150, for example, the storage tanks 140A and 140, respectively.
A reverse ionized water introducing means is configured by supplying ionized water from B to each introducing pipe P11, P12 by an electric pump, respectively, and when the voltage application is stopped, each electrode chamber 114, 115 is connected to each introducing pipe P11 from each storage tank 140A, 140B. , P1
It is also possible to carry out by supplying reverse ionized water to 2 respectively.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of an electrolytic ionized water generator according to the first invention.

FIG. 2 is a diagram showing an embodiment of an electrolytic ionized water generator according to the second invention.

FIG. 3 is an enlarged view of an S portion of FIG.

FIG. 4 is an operation explanatory view of a portion corresponding to FIG.

[Explanation of symbols]

10 ... Electrolyzer, 12, 13 ... Electrode, 14, 15 ... Electrode chamber, 16 ... Diaphragm, 20 ... Electrode changer, 30 ... Power supply circuit,
40 ... Reservoir tank, 50 ... Control device, V4, V5, V6
Opening / closing valve, 110 ... Electrolyzer, 112, 113 ... Electrodes, 114, 115 ... Electrode chamber, 116 ... Diaphragm, 120 ...
Electrode switch, 130 ... Power supply circuit, 140A, 140B ...
Storage tank, 150 ... Control device, V14, V15, V1
6, V17 ... Communication switching valve, V18, V19 ... Flow path switching valve, PM11 ... Electric pump.

Claims (4)

[Claims] 1. A pair of electrodes made of a metal material are arranged inside to oppose each other, and a diaphragm is arranged between the electrodes to form a pair of electrode chambers for accommodating the electrodes. For allowing the inflow and outflow of electricity, an electrode switching means for switching the forward and reverse of the DC voltage applied to both electrodes, and stopping the voltage application to both electrodes for a set time when switching the voltage application by this electrode switching means. Electrolytic ion provided with voltage application stopping means and alkaline ionized water introducing means for supplying alkaline ionized water to the electrode chamber accommodating the positive electrode before switching the voltage application when the voltage application is stopped by the voltage application stopping means Water generator. 2. The electrolytic ion water generation according to claim 1, wherein the amount of the alkaline ion water supplied through the alkaline ion water introducing means is an amount for neutralizing or alkalizing the electrode chamber. apparatus. 3. A pair of electrodes made of a metal material are provided inside to face each other, and a diaphragm is provided between the electrodes to form a pair of electrode chambers for accommodating the electrodes. For allowing the inflow and outflow of electricity, an electrode switching means for switching the forward and reverse of the DC voltage applied to both electrodes, and stopping the voltage application to both electrodes for a set time when switching the voltage application by this electrode switching means. An electrolyzed ionized water production device comprising voltage application stopping means and reverse ionized water introducing means for supplying reverse ionized water to the electrode chambers when the voltage application is stopped by the voltage application stopping means. 4. The electrolytic ionized water production apparatus according to claim 3, wherein the amount of the reversely ionized water supplied through the reversely ionized water introducing means is such that the inside of each electrode chamber is substantially neutralized.