JPH10469A - Electrolytic water producing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrolytic water producing apparatus with a simplified structure at low cost which can produce a plurality of different types of electrolytic water. SOLUTION: This electrolytic water producing apparatus is so constituted as to store a diluted salt water in a diluted salt water tank 20 and supply the diluted salt selectively to an electrolytic bath 30 by a motor driven pump 28 and a switching valve 51. Moreover, the apparatus is constitute as to selectively supply water from an outside water supply sources to the electrolytic bath 30 by a solenoid valve 54 and the switching valve 51. When production of strong electrolytic water is indicated by a raw water indication switch 91, the diluted salt water is supplied to the electrolytic bath 30. When production of weak electrolytic water is appointed by the raw water indicating switch 91, the water is supplied to the electrolytic bath 30. The electrolytic bath 30 house electrodes 34, 35 to which d.c. voltage is applied from the d.c. power source 60 and the diluted salt water or water is electrolyzed by applying d.c. voltage to produce strong electrolytic water or weak electrolytic water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolyzed water generator for electrolyzing raw water in an electrolyzer to generate electrolyzed water used for medical treatment and the like.

[0002]

2. Description of the Related Art Conventionally, an electrolyzed water generating apparatus for generating electrolyzed water by electrolyzing raw water in an electrolyzer is well known. In this case, the raw water to be electrolyzed by each electrolyzed water generator is predetermined according to the use of the electrolyzed water generated by each electrolyzed water generator. For example, those which produce strongly acidic water used for sterilization use an aqueous solution of sodium chloride, potassium chloride or the like as raw water. Those which produce weakly alkaline water used for drinking use water as raw water. Further, for example, Japanese Patent Application Laid-Open No. 7-155
Japanese Patent Publication No. 562 also discloses an electrolyzed water generating apparatus in which a plurality of electrolyzers are provided, and different raw waters are electrolyzed in each electrolyzer to generate a plurality of different electrolyzed waters.

[0003]

However, the conventional electrolyzed water generating apparatus having a single electrolytic cell has a problem that a plurality of different electrolyzed waters cannot be generated. On the other hand, in the electrolyzed water generating apparatus provided with a plurality of electrolyzers, there has been a problem that the configuration of the entire apparatus becomes complicated and the cost increases.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an electrolyzed water generating apparatus capable of generating a plurality of different electrolyzed waters with a simple configuration and at a low cost.

[0005] To achieve the above object, the first aspect of the present invention.
The constitutional features of the above are that it accommodates a pair of electrodes, electrolyzes the supplied raw water to generate electrolyzed water, voltage applying means for applying positive and negative DC voltages to both electrodes, Raw water supply means for inputting different raw waters, selecting one of the plurality of different raw waters input and supplying the selected raw water to the electrolytic cell, and raw water specifying means for specifying the raw water selected by the raw water supply means That you have. According to this, an electrolyzed water generation device that generates a plurality of different electrolyzed waters by electrolyzing a plurality of different raw waters can be configured simply and inexpensively.

A second structural feature of the present invention is that, in addition to the first structural feature, a discharge pipe for discharging the electrolytic water generated in the electrolytic cell and a plurality of different raw waters are provided. A plurality of outlet pipes are provided corresponding to each other, and independently take out the electrolyzed water generated in the electrolytic cell,
An electrolytic water supply means connected between the outlet pipe and the plurality of outlet pipes, for supplying the electrolytic water led to the outlet pipe to one of the plurality of outlet pipes in conjunction with the designation of the raw water by the raw water designating means; Has been established. According to this, since the same electrolyzed water is always taken out from the same extraction pipe, the usability of the electrolyzed water generation device is improved.

A third structural feature of the present invention, in addition to the first structural feature, is to control the voltage applying means in response to the designation of raw water by the raw water designating means to control both electrodes. Voltage control means for varying the voltage applied to the raw water according to the designation of the raw water. According to this, an appropriate voltage according to the raw water to be electrolyzed is applied to both electrodes by the applied voltage control means, so that the generated electrolyzed water is stabilized and deterioration of the electrodes is suppressed. .

A fourth structural feature of the present invention is that, in addition to the first structural feature, when the designation of the raw water by the raw water designating means is changed, the raw water in the electrolytic cell is removed for a predetermined time. Discharge means for discharging only waste water. According to this, when the designation of raw water by the raw water specifying means is changed,
Since the raw water remaining in the electrolytic tank and specified by the raw water specifying means before the change or the electrolytic water generated from the raw water is discharged, the change of the electrolytic water generated in the electrolytic tank is reliable. Thus, the usability of the electrolyzed water generating device is improved.

According to a fifth structural feature of the present invention, in addition to the first structural feature, both electrodes are controlled by controlling the voltage applying means in response to the designation of raw water by the raw water designating means. Voltage applying means for varying the voltage applied to the raw water according to the specification of the raw water, and discharge means for discharging the raw water or the electrolytic water in the electrolytic tank for a predetermined time when the specification of the raw water by the raw water specifying means is changed. And an applied voltage stopping means for stopping the application of the DC voltage to both electrodes by the voltage applying means when the raw water or the electrolytic water in the electrolytic cell is discharged by the discharging means. According to this, as in the case of the third structural feature, the generated electrolyzed water is stabilized and the deterioration of the electrodes is suppressed, and when the specification of the raw water by the raw water specifying means is changed. Since the application of the DC voltage to both electrodes is stopped by the applied voltage stopping means, the raw water specified in the raw water specifying means before the same change remaining in the electrolytic cell was designated after the change. The application of the voltage corresponding to the raw water is avoided, and the generated electrolyzed water is stabilized and the deterioration of the electrodes is suppressed reliably. Further, as in the case of the fourth configuration feature, the electrolytic water generated in the electrolytic cell is surely changed and the usability of the electrolytic water generating device is improved. When the raw water or the electrolyzed water in the electrolysis tank is discharged, the application of the DC voltage to both electrodes is stopped by the applied voltage stopping means, so that wasteful power is consumed to generate the electrolyzed water discharged. Is avoided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows an entire electrolyzed water generating apparatus according to the embodiment.

The electrolyzed water generating apparatus includes a concentrated salt water tank 10 for storing concentrated salt water, a diluted salt water tank 20 provided below the tank 10 for storing diluted salt water, a diluted salt water supplied from the diluted salt water tank 20, Electrolysis tank 30 for electrolyzing water supplied from the outside to generate electrolyzed water, and a plurality of electrolyzed water tanks 40a for storing each electrolyzed water generated in electrolyzer 30
To 40d.

The concentrated salt water tank 10 is replenished with a large amount of salt S (eg, sodium chloride, potassium chloride, etc.), and water is pressure-fed from an external water source (eg, tap water) not shown via a water supply pipe 11. It has become. The water supply pipe 11 is provided with an electromagnetic valve 12. The valve 12 supplies water from the outside to the concentrated salt water tank 10 through the water supply pipe 11 in an open state. The concentrated salt water tank 10 is always filled with concentrated salt water obtained by dissolving the replenished salt S in a substantially saturated state with water, and the remaining undissolved salt S
Always settles at the bottom of the tank 10. Further, a water level sensor 13 is accommodated in the concentrated salt water tank 10,
The water level sensor 13 detects that the water level in the tank 10 has become equal to or higher than a predetermined upper limit water level.
It is also detected that the water level within 0 has fallen below the lower water level lower than the upper water level.

The concentrated salt water tank 10 includes a dilute salt water tank 20.
A supply pipe 14 for supplying concentrated salt water to the bottom of the tank 10 penetrates upward, and the upper end surface of the supply pipe 14 is slightly lower than the lower limit water level so that the precipitated salt S is not mixed. It is open at a low position. An electromagnetic valve 15 is interposed in the supply pipe 14, and the valve 15 supplies the concentrated salt water in the concentrated salt water tank 10 to the diluted salt water tank 20 through the supply pipe 14 in an open state.

Above the dilute salt water tank 20, a lower end outlet of the supply pipe 14 and an outlet of the water supply pipe 21 are arranged. In the tank 20, the concentrated salt water in the concentrated salt water tank 10 is supplied.
, And water from an external water supply source is also selectively supplied via a water supply pipe 21. An electromagnetic valve 22 is interposed in the water supply pipe 21, and the valve 22 supplies water from the outside to the diluted salt water tank 20 through the water supply pipe 21 in an open state. Also,
In the diluted salt water tank 20, a concentration sensor 23 and a water level sensor 24 are accommodated. The concentration sensor 23 detects the concentration of the dilute salt water in the dilute salt water tank 20. The water level sensor 24 detects that the water level in the dilute salt water tank 20 has become equal to or higher than a predetermined upper limit water level, and also detects that the water level in the tank 20 has become equal to or lower than the lower limit water level lower than the upper limit water level.

[0015] One end of a conduit 25 and one end of a supply pipe 26 are connected to the bottom of the dilute salt water tank 20. The other end of the conduit 25 is connected to the side wall of the dilute salt water tank 20, and an electric pump 27 is provided at an intermediate portion of the conduit 25, and the electric pump 27 is operated in the dilute salt water tank 20. Stir dilute brine. The other end of the supply pipe 28 is connected to a switching valve (raw water supply means) 51, and an electric pump (raw water supply means) 28 is interposed at an intermediate portion of the supply pipe 26, and the pump 28 operates. In this state, the dilute salt water in the dilute salt water tank 20 is supplied to the switching valve 51 via the supply pipe 26.

An overflow pipe 16 is connected to each side wall of the concentrated salt water tank 10 and the diluted salt water tank 20, and the overflow pipe 16 is located at a position slightly higher than the upper limit water level detected by the water level sensors 13 and 24, respectively. Each tank 10, 20 is open. Thereby, when the water level in each of the tanks 10 and 20 becomes higher than each opening position of the overflow pipe 16, the salt water in each of the tanks 10 and 20 is discharged to the outside.

A water supply pipe 52 is also connected to the switching valve 51, and water from an external water supply source is selectively supplied to the valve 51. The water supply pipe 52 is provided with a pressure reducing valve 53 and an electromagnetic valve (raw water supply means) 54. The pressure reducing valve 53 appropriately reduces the external water pressure. The electromagnetic valve 54 supplies water from the outside to the switching valve 51 via the water supply pipe 52 in the open state.

Further, a supply pipe 55 is connected to the switching valve 51.
Is connected, and the pipe 55 is connected to the switching valve 51.
Is selectively communicated with the supply pipe 26 or the water supply pipe 52. The switching valve 51 is connected to the supply pipe 2
When set to the 6 side, the supply pipe 55 is supplied with the dilute salt water in the dilute salt water tank 20 supplied to the switching valve 51 via the supply pipe 26 by the electric pump 28. When the switching valve 51 is set on the water supply pipe 52 side,
Water from an external water supply source supplied to the switching valve 51 via the water supply pipe 52 by the electromagnetic valve 54 is supplied to the supply pipe 55.

The supply pipe 55 is branched into two parts at an intermediate part, and each of the branched parts has a flow sensor 56.
a, 56b and flow control valves 57a, 57b. The flow rate sensors 56a and 56b detect the flow rate of the dilute salt water or water flowing in the supply pipe 55. The flow control valves 57a and 57b are electrically controlled to adjust the flow rate of the dilute salt water or water.

The interior of the electrolytic cell 30 is partitioned by a diaphragm 31 into a pair of electrode chambers 32 and 33. Each electrode room 3
2 and 33 are connected to one ends of the branched supply pipes 55, respectively. Dilute salt water or water supplied from the switching valve 51 to the supply pipes 55 is supplied to the flow sensors 56a and 5a, respectively.
6b and the flow control valves 57a and 57b. Each of the electrode chambers 32 and 33 contains an electrode 34 and 35, respectively, and is supplied from the supply pipe 55 when a DC power supply (voltage applying means) 60 applies a DC voltage to both electrodes 34 and 35. The diluted salt water or water is electrolyzed to generate electrolyzed water. Note that the DC power supply device 60 is configured to be able to apply different voltages suitable for each of electrolyzing dilute salt water and electrolyzing water,
The DC voltage applied to each of the electrodes 34 and 35 can be switched between positive and negative polarities. In addition, each electrode chamber 3
The ends of the outlet pipes 36 and 37 are also connected to the electrode chambers 2 and 33, respectively. When dilute salt water or water is supplied from the supply pipe 55 to the electrode chambers 32 and 33, the inside of the electrode chambers 32 and 33 is closed. Dilute salt water or water or electrolyzed water is led out through the pipes 36 and 37.

The other ends of the outlet pipes 36 and 37 are connected to switching valves (discharge means) 71 and 72, respectively, so that dilute salt water or water or electrolytic water drawn from the electrolytic cell 30 is discharged from the discharge pipes 73 and 74. Alternatively, they are selectively supplied to the supply pipes 75 and 76. Switching valves 71, 72
Is set on the discharge pipe 73, 74 side, the dilute salt water or water or electrolyzed water is discharged outside through the pipes 73, 74. The switching valves 71, 72 are connected to the supply pipe 75,
When set to the side 76, the dilute salt water or water or electrolyzed water is supplied to the switching valve 77 via the pipes 75 and 76. However, the supply pipe 7 is controlled by control described later.
Only electrolyzed water is supplied to 5, 76, and neither dilute salt water nor water is supplied.

The switching valve 77 has supply pipes 78 and 79.
Are connected to each other, and the supply pipe 75,
The flow path of the electrolyzed water supplied to 76 can be switched. When the switching valve 77 is in the first state (illustrated state), the electrolytic water generated in the electrode chamber 32 and supplied to the supply pipe 75 is supplied to the supply pipe 78 and generated in the electrode chamber 33 to supply the electrolytic water. The electrolytic water supplied to 76 is supplied to supply pipe 79.
Supplied to When the switching valve 77 is in the second state (the state of the phantom line in the figure), the electrolytic water generated in the electrode chamber 32 and supplied to the supply pipe 75 is supplied to the supply pipe 79 and generated in the electrode chamber 33. The electrolyzed water supplied to the supply pipe 76 is supplied to the supply pipe 78. Note that the state of the switching valve 77 is changed by the control described later to change the state of the electrodes 34 and 35.
The electrolyzed water generated in the electrode chamber 32 (or 33) accommodating the electrode 34 (or 35) to which the positive voltage is applied is always switched to the supply pipe 78. To the electrode 3 to which a negative voltage is applied
Electrolyzed water generated in the electrode chamber 33 (or 32) containing 5 (or 34) is always supplied to the supply pipe 79.

The other ends of the supply pipes 78, 79 are connected to switching valves (electrolytic water supply means) 81, 82, respectively, so that the electrolytic water supplied to the supply pipes 78, 79 is supplied to the supply pipes 83, 84. And the supply pipes 85 and 86 are selectively supplied. The supply pipes 83 to 86 are connected to the electrolytic water tanks 40a to 40d, respectively.
The electrolyzed water supplied to 3 to 86 is supplied to the corresponding electrolyzed water tanks 40a to 40d, respectively.
An extraction pipe 41 is provided at the bottom of each of the electrolyzed water tanks 40a to 40d.
a to 41d are connected at one end,
Cocks 42a to 42d are interposed in the respective extraction pipes 41a to 41d, and the respective electrolyzed water in the electrolyzed water tanks 40a to 40d is discharged from the other ends of the extraction pipes 41a to 41d by operating the respective cocks 42a to 42d. They are taken out as appropriate.

The electrolyzed water generating apparatus includes the various sensors 1
3, 23, 24, 56a, 56b, electromagnetic valves 12, 1
5, 22 and 54, electric pumps 27 and 28, switching valves 51, 71, 72, 77, 81 and 82, flow control valves 57a and 57b, and an electric control circuit 90 connected to the DC power supply 60. The electric control circuit 90 is constituted by a microcomputer and executes a program corresponding to the flowchart shown in FIG. 2 to open and close the electromagnetic valves 12, 15, 22, and 54, and to operate the electric pump 2
7, 28 and the operation of the DC power supply 60 and the states of the switching valves 51, 71, 72, 77, 81, 82 and the flow regulating valves 57a, 57b.

The electric control circuit 90 includes first and second timers 90a and 90b. The first timer 90a
The time when the switching valves 71 and 72 are set to the discharge pipes 73 and 74 is measured. Second timer 90b
Is for measuring the time for controlling the switching between the positive and negative polarities of the voltage applied to the electrodes 34 and 35. Further, a raw water designation switch (raw water designation means) 91 is also connected to the electric control circuit 90. The raw water designation switch 91 is switched by manual operation, and is set to either a strong electrolyzed water side for specifying generation of strongly electrolyzed water or a weakly electrolyzed water side for specifying generation of weakly electrolyzed water.

Next, the operation of the embodiment configured as described above will be described. A large amount of salt S is put into the concentrated salt water tank 10 to make the concentrated salt water in the tank 10 almost saturated. The salt S is replenished at any time so that the remaining salt S is always settled at the bottom of the tank 10. Thereafter, when a power switch (not shown) is turned on, the electric control circuit 90 starts executing the program in step 100 of FIG.

First, when the raw water designation switch 91 is set to the strong electrolyzed water side, the electric control circuit 90 executes step 1
Based on the determination of “YES” in 02, the program proceeds to step 104 and subsequent steps. In step 104, the switching valve 51 is set to the supply pipe 26 side. In step 106, the switching valves 71, 72 are set on the discharge pipes 73, 74 side. In step 108, the electric pump 28 is operated. By each of these processes, the dilute salt water in the dilute salt water tank 20 starts to be supplied to the electrolytic cell 30 via the supply pipe 26, the switching valve 51, and the supply pipe 55, and the dilute salt water or water remaining in the electrolytic cell 30 Alternatively, the electrolytic water starts to be discharged to the outside via the outlet pipes 36 and 37, the switching valves 71 and 72, and the discharge pipes 73 and 74. Also, the electric control circuit 90 determines in step 110
Then, the first timer 90a is reset-started to start timing, and the determination process of step 112 is repeatedly executed until the timer 90a reaches a predetermined time. Thereby, the supply and discharge are continued, the inside of the electrolytic cell 30 is filled with the newly supplied dilute salt water, and the dilute salt water or water or the electrolytic water remaining in the electrolytic cell 30 is entirely discharged to the outside. Is done.

During the repetitive execution of step 112, the first
When the timer 90a reaches a predetermined time, the electric control circuit 90
Is determined to be “YES” and the program proceeds to step 114 and subsequent steps. In step 114, the DC power supply 60 is operated to apply a DC voltage suitable for the electrolysis of the dilute salt water to both electrodes 34 and 35. Thereby, the electrolytic cell 3
At 0, electrolysis of the supplied diluted salt water is started, and generation of strongly electrolyzed water is started. In this case, the electrode chamber 32 accommodating the electrode 34 (or 35) to which the positive voltage is applied.
(Or 33), the electrode chamber 33 containing the electrode 35 (or 34) to which the strongly acidic water is generated and the negative voltage is applied.
In (or 32), strongly alkaline water is generated.

In step 116, the switching valves 81, 82 are set on the supply pipes 83, 85 side. In step 118, the switching valves 71 and 72 are connected to the supply pipe 7.
Set to 5, 76 side. By each of these processes, the strongly acidic water generated in the electrolytic cells 32 and 33 is supplied to the supply pipe 75.
(Or 76), the electrolytic water tank 40a via the switching valve 77, the supply pipe 78, the switching valve 81, and the supply pipe 83.
, The strong alkaline water starts to be supplied to the electrolyzed water tank 40c via the supply pipe 76 (or 75), the switching valve 77, the supply pipe 79, the switching valve 82, and the supply pipe 85. Thereafter, until the designated switch 91 is switched to the weakly electrolyzed water side, the electric control circuit 90 continues to repeatedly execute the determination processing of step 120, so that the strongly acidic water and the strongly alkaline water continue to be generated in the electrolytic cell, and the same generation is performed. The obtained strongly acidic water and strongly alkaline water continue to be supplied to the corresponding electrolyzed water tanks 40a and 40c, respectively.

If the designation switch 91 is switched to the weakly electrolyzed water side during the repetition of step 120, the electric control circuit 90 determines "YES" and proceeds to step 122 and subsequent steps. In step 122,
The DC power supply 60 is stopped. In step 124, the electric pump 28 is stopped. By each of these processes, the generation of the strongly electrolyzed water in the electrolytic cell 30 is stopped.

In step 126, the switching valve 51 is set to the water supply pipe 52 side. In step 128, the switching valves 71, 72 are set to the discharge pipes 73, 74 side. In step 130, the electromagnetic valve 54
open. By each of these processes, water from the external water supply source starts to be supplied to the electrolytic cell 30 via the water supply pipe 52, the switching valve 51, and the supply pipe 55, and the dilute salt water or the strong electrolytic water remaining in the electrolytic cell 30. Starts to be discharged to the outside via the outlet pipes 36 and 37, the switching valves 71 and 72, and the discharge pipes 73 and 74. Further, the electric control circuit 90 executes the same processing as in steps 110 and 112 in steps 132 and 134. Accordingly, the supply and discharge are continued, the inside of the electrolytic cell 30 is filled with newly supplied water, and all the dilute salt water or strong electrolytic water remaining in the electrolytic cell 30 is discharged to the outside. .

In step 136, the DC power supply 60 is operated to apply a DC voltage suitable for electrolysis of water to both electrodes 34 and 35. Thereby, in the electrolytic cell 30, the electrolysis of the supplied water is started, and the generation of the weak electrolyzed water is started. In this case, the electrode chamber 32 (or 3) accommodating the electrode 34 (or 35) to which the positive voltage is applied.
In 3), weakly acidic water is generated, and the electrode chamber 33 (or 3) containing the electrode 35 (or 34) to which a negative voltage is applied.
In 2), weak alkaline water is generated.

In step 138, the switching valves 81, 82 are set on the supply pipes 84, 86 side. In step 140, the switching valves 71 and 72 are connected to the supply pipe 7.
Set to 5, 76 side. By each of these processes, the weakly acidic water generated in the electrolytic cells 32 and 33 is supplied to the supply pipe 75.
(Or 76), the electrolytic water tank 40b via the switching valve 77, the supply pipe 78, the switching valve 81, and the supply pipe 84.
, And the strong alkaline water starts to be supplied to the electrolyzed water tank 40d via the supply pipe 76 (or 75), the switching valve 77, the supply pipe 79, the switching valve 82, and the supply pipe 86. Thereafter, until the designation switch 91 is switched to the strongly electrolyzed water side, the electric control circuit 90 continues to repeatedly execute the determination processing of step 142, so that the weakly acidic water and the weakly alkaline water continue to be generated in the electrolytic cell, and the generation is continued. The weakly acidic water and the weakly alkaline water thus supplied continue to be supplied to the corresponding electrolyzed water tanks 40b and 40d, respectively.

If the designation switch 91 is switched to the strong electrolyzed water side during the repetitive execution of the step 142, the electric control circuit 90 determines "YES" and advances the program to the step 144 and thereafter. In step 144,
The DC power supply 60 is stopped. In step 146, the electromagnetic valve 54 is closed. By each of these processes,
The generation of the weak electrolyzed water in the electrolytic cell 30 is stopped.
Then, the electric control circuit 90 advances the program again to the step 104 and thereafter, and thereafter repeats the same processing.
When the raw water designation switch 91 is initially set to the weak electrolyzed water side, based on the determination of “NO” in step 102, the electric control circuit 90 proceeds to step 1 described above.
The program proceeds to step 26, and the same processing is repeated thereafter.

On the other hand, during the circulating process of steps 104 to 146, the electric control circuit 90 performs a process of periodically switching the positive and negative polarities of the voltage applied to the electrodes 34 and 35 by executing a program (not shown). In this process, the electric control circuit 90 resets and starts the second timer 90b when causing the DC power supply device 60 to start applying a DC voltage. As a result, the second timer 90b starts counting the duration during which the DC power supply device 60 applies the DC voltage to the electrodes 34 and 35. When the second timer 90b measures that the continuation time has reached a predetermined time (for example, 6 hours), the electric control circuit 90 switches the DC power supply 60
To switch the positive and negative polarities of the voltage applied to each of the electrodes 34 and 35, and reset-start the second timer 90b again. Thereafter, similarly, every time the second timer 90b measures a predetermined time, the electric control circuit 90 controls the DC power supply device 60 to switch the positive and negative polarities of the voltage applied to each of the electrodes 34 and 35, and to control the second timer 90b.
Reset start. Thus, the electrode 3
By switching the positive and negative polarities of the applied voltage to the electrodes 34 and 35, the electrodes 34 and 35 to which the negative DC voltage has been applied are changed.
Is removed when a positive DC voltage is applied to the electrodes 34 and 35, the reduction in electrolysis efficiency is improved, and stable electrolyzed water is generated. Become so.

The electric control circuit 90 sets the state of the switching valve 77 in conjunction with the switching. Electrode 34
When a positive voltage is applied to the electrode 35 and a negative voltage is applied to the electrode 35, the switching valve 77 is set to the first state. When a negative voltage is applied to the electrode 34 and a positive voltage is applied to the electrode 35, the switching valve 77 is set to the second state.
Thus, the supply pipe 78 is always supplied with strongly acidic water or weakly acidic water, and the supply pipe 79 is always supplied with strongly alkaline water or weakly alkaline water.

On the other hand, during the circulation processing in steps 104 to 146, the electric control circuit 90 performs processing for adjusting the salt water in the concentrated salt water tank 10 and the diluted salt water tank 20 by executing a program (not shown). In this process, when the water level in the dilute salt water tank 20 decreases to reach the lower limit water level due to the supply of the dilute salt water to the electrolytic tank 30, the electromagnetic valve 22 is opened based on the detection of the water level sensor 24 to open the tank 20. Until the water level reaches the upper limit water level. When the concentration of the dilute salt water in the tank 20 is reduced by the water supply and reaches a predetermined lower limit, the electromagnetic valve 14 is opened based on the detection of the concentration sensor 23, and the concentration of the dilute salt water becomes the predetermined upper limit value. The concentrated salt water is supplied to the tank 20 until it reaches. When the water level in the concentrated salt water tank 10 decreases to reach the lower limit water level due to the supply of the concentrated salt water, the electromagnetic valve 12 is opened based on the detection of the water level sensor 13 until the water level in the tank 10 reaches the upper limit water level. Water is supplied to the tank 10. The electric pump 28 is operated in conjunction with the supply of water to the dilute salt water tank 20 and the supply of concentrated salt water, and the dilute salt water in the tank 20 is stirred. By each of these treatments, the water level in the concentrated salt water tank 10 and the dilute salt water tank 20 is always maintained between the upper limit water level and the lower limit water level during the circulation processing,
The concentration of the dilute salt water in the dilute salt water tank 20 is maintained between the upper limit and the lower limit.

On the other hand, during the circulation processing in steps 104 to 146, the electric control circuit 90 executes a processing for adjusting the flow rate of the dilute salt water or the water supplied to the electrolytic cell 30 by executing a program (not shown). In this process, the flow sensor 56,
Based on the detection at 56, the flow rate control valves 57, 57 are controlled to adjust the flow rate of the dilute salt water or the water supplied to the electrode chambers 32, 33.

As described above, according to the above-described embodiment, by switching the switching valve 51, it is possible to selectively supply dilute salt water or water to the electrolytic cell 30. Therefore, according to this, an electrolyzed water generation device that can selectively generate strongly electrolyzed water and weakly electrolyzed water can be simply and inexpensively configured.

In the above embodiment, the switching valves 81 and 8 are linked with the switching of the switching valve 51.
By switching 2, the same electrolytic water is always supplied to the same supply pipes 83 to 86. Therefore, since the same electrolyzed water is always taken out from the same take-out pipe 41, the usability of the electrolyzed water generation device is improved.

In the above-described embodiment, the DC power supply 60 applies different voltages suitable for the electrolysis of the dilute salt water and the electrolysis of the water to the electrodes 34, respectively.
35. Thereby, the electrolyzed water generated in the electrolytic cell 30 is stabilized, and the deterioration of the electrodes 34 and 35 is suppressed.

In the above embodiment, when the switching valve 51 is switched, the switching valves 71 and 72 are set on the discharge pipes 73 and 74 for a predetermined time and remain in the electrolytic cell 30. Dilute salt water or water or electrolyzed water is discharged to the outside. Therefore, the generated electrolyzed water is reliably changed, and the usability of the electrolyzed water generation device is improved.

In the above embodiment, when the switching valve 51 is switched, the application of the voltage is stopped, so that the dilute salt water or water remaining in the electrolytic cell and supplied before the switching is removed. Electrolysis at a voltage corresponding to the diluted salt water or water supplied after the switching is avoided, and the generated electrolyzed water is stabilized and the electrodes 34 and 35 are reliably prevented from deteriorating. Also, the switching valves 71, 72 are set on the discharge pipes 73, 74 side,
When the dilute salt water or water or the electrolyzed water discharged from the electrolysis tank 30 is discharged to the outside, the application of the voltage is stopped, so that wasteful power is consumed to generate the discharged electrolyzed water. Is avoided.

In the above embodiment, two types of raw water are selectively electrolyzed to generate two types of electrolyzed water. However, depending on the use of the electrolyzed water, other types of raw water can also be used. Electrolyzed water may be generated. in this case,
The other raw water is also supplied to the electrolytic cell 3 by switching the switching valve 51.
0, and when the generation of electrolyzed water from the raw water is designated by the raw water designation switch, the raw water is supplied by the same procedure as in the case of electrolyzing the dilute salt water and water in the above embodiment. May be electrolyzed in the electrolytic tank 30 to generate electrolyzed water. In addition, an electrolytic water tank for storing the electrolytic water is newly provided, and the switching valves 81 and 82 are configured to supply the electrolytic water to the electrolytic water tank. Water and weak electrolyzed water are supplied to each electrolyzed water tank 40a ~
It is preferable to supply the same electrolyzed water to the same electrolyzed water tank in the same procedure as the case of supplying the same to the 40d.

In the above embodiment, the electrolytic cell 3
Although the one partitioned by the diaphragm 31 into the two electrode chambers 32 and 33 is used as 0, an electrolytic cell having no diaphragm may be used.

In the above-described embodiment, the electrolyzed water tanks 40a to 40d are provided, and the generated electrolyzed water is temporarily stored in the corresponding electrolyzed water tanks 40a to 40d. However, the electrolyzed water tanks 40a to 40d may not be provided, and each electrolyzed water may be directly taken out from the supply pipes 83 to 86.

[Brief description of the drawings]

FIG. 1 is an overall schematic diagram of an electrolyzed water generation device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a main program executed by an electric control circuit (microcomputer) of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Concentrated salt water tank, 20 ... Dilute salt water tank, 28 ... Electric pump, 30 ... Electrolysis tank, 34,35 ... Electrode, 36,37
... Outlet pipe, 40 ... Electrolysis water tank, 41 ... Extraction pipe, 51
... Switching valve, 54 ... Electromagnetic valve, 60 ... DC power supply, 71,72 ... Discharge pipe, 81,82 ... Switching valve,
90 ... electric control circuit (microcomputer), 91 ...
Raw water designation switch.

Claims (5)

[Claims] An electrolyzer for accommodating a pair of electrodes and electrolyzing supplied raw water to generate electrolyzed water; voltage applying means for applying a positive and negative DC voltage to the pair of electrodes; Raw water supply means for inputting different raw water, selecting one of a plurality of different raw water inputted thereto, and supplying the selected raw water to the electrolytic cell, and raw water designation for specifying the raw water selected by the raw water supply means Means for producing an electrolyzed water. 2. The electrolyzed water generating apparatus according to claim 1, wherein an outflow pipe for outgoing the electrolyzed water generated in the electrolyzer is provided corresponding to each of the plurality of different raw waters, A plurality of outlet pipes for independently taking out the electrolyzed water generated in the electrolytic cell, and each of the outlet pipes is connected between the outlet pipe and the plurality of outlet pipes. An electrolyzed water supply unit for supplying electrolyzed water led to the outlet pipe to one of the plurality of outlet pipes in conjunction therewith. 3. The electrolyzed water generating apparatus according to claim 1, wherein in response to designation of raw water by said raw water designating means,
An electrolyzed water generating apparatus, further comprising: an applied voltage control unit that controls the voltage application unit to change a voltage applied to the pair of electrodes according to designation of the raw water. 4. An electrolyzed water generating apparatus according to claim 1, further comprising a discharging means for discharging the raw water or the electrolytic water in the electrolytic tank for a predetermined time when the specification of the raw water by the raw water specifying means is changed. An electrolyzed water generation device, comprising: 5. The electrolyzed water generating apparatus according to claim 1, wherein in response to the designation of the raw water by the raw water designating means, the voltage applying means is controlled to apply a voltage applied to the pair of electrodes to the raw water. When the designation of raw water by the raw water designating means has been changed,
Discharging means for discharging raw water or electrolytic water in the electrolytic tank for a predetermined time; and when the discharging means discharges raw water or electrolytic water in the electrolytic tank, the voltage applying means supplies the pair of electrodes to the pair of electrodes. An electrolyzed water generating apparatus comprising: an applied voltage stopping means for stopping application of a DC voltage.