JPH0999286A - Electrolytic water production equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent leaked concentrated brine from further being leaked out to the outside of a dilute brine tank and also to rapidly deal with the brine leakage at the time of causing a brine leakage from a supply pipe. SOLUTION: In this equipment, a recessed part 20a1 which is a part of a cover 20a for covering the top of a dilute brine tank 20, is formed around the joint between a supply pipe 14 and the cover 20a and also, this recessed part 20a1 is provided with a drain hole 20a3 . The dilute brine tank 20 is divided into a first room R1 and a second room R2 with a partition plate 21 in such a way that the two rooms R1 and R2 are made to partially communicate with each other. A concn. sensor 24 for adjusting the concn. of dilute brine is placed in the first room R1 and also, the drain hole 20a3 is positioned above the first room R1. When the concn. sensor 24 detects a brine leakage detection concn. that is a higher concn. than the normal concn. of the dilute brine, the production of electrolytic water is stopped and concurrently, operators are informed of the abnormality by an alarm 72 and a display 73.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention stores a predetermined low concentration diluted salt water prepared by mixing concentrated salt water stored in a concentrated salt water tank and water supplied from the outside in a diluted salt water tank. In addition, the present invention relates to an electrolyzed water generation device that supplies the stored diluted salt water to an electrolytic cell and electrolyzes the diluted salt water in the electrolytic cell.

[0002]

2. Description of the Related Art Conventionally, this type of electrolyzed water producing apparatus has a concentrated salt water tank for storing a predetermined high concentration of concentrated salt water, and a lid provided below the concentrated salt water tank to cover the upper surface of the tank. It is provided with a dilute salt water tank storing a dilute salt water of a concentration. One end of a pipe through a valve is connected to the concentrated salt water tank, and the other end of the pipe is connected to the lid of the diluted salt water tank.By opening the valve, the concentrated salt water in the concentrated salt water tank is diluted with the diluted salt water tank. It will be supplied inside. The dilute salt water tank contains a water level sensor and a concentration sensor that detect the water level and concentration of the dilute salt water in the tank, and selectively supplies water from the outside based on the detection by the water level sensor and detects by the concentration sensor. Based on the above, the valve is selectively opened and closed to replenish the concentrated salt water from the concentrated salt water tank so that the diluted salt water tank always stores a fixed amount and a fixed concentration of the diluted salt water. The diluted salt water thus stored in the diluted salt water tank is supplied to the electrolytic cell and electrolyzed therein.

[0003]

However, in the above-mentioned conventional device, when water leaks due to breakage of the pipe, poor connection with the valve, etc., the concentrated salt water leaked from the pipe is discharged to the outer periphery of the pipe and the dilute salt water tank. There was a problem that it leaked to the outside of the dilute salt water tank through the upper surface of the lid. In addition, the user had no choice but to visually check and deal with this leak.

The present invention has been made to solve the above-mentioned problems, and prevents leakage of concentrated salt water from leaking to the outside of the dilute salt water tank when water leaks due to breakage of the pipe, poor connection with the valve, or the like. Another object of the present invention is to provide an electrolyzed water generation device capable of promptly dealing with water leakage in the pipe.

[0005]

Means for Solving the Problems and Effects Thereof In order to achieve the above object, the first feature of the present invention is a pipe which is a part of a lid of a diluted salt water tank and which supplies concentrated salt water from the concentrated salt water tank. The reason is that a recess is provided around the connection of and the through hole is provided in the recess.

According to this, when water leaks due to breakage of the pipe, connection failure with the valve, etc., the concentrated salt water leaking from the pipe flows along the outer periphery of the pipe into the concave portion of the lid of the dilute salt water tank, and further, Since it passes through the through hole and flows into the diluted salt water tank, it does not leak to the outside of the diluted salt water tank.

A second feature of the present invention is that, in addition to the first feature, the concentration of the dilute salt water detected by the concentration sensor housed in the dilute salt water tank is higher than a predetermined low concentration. In this case, a water leak detecting means for detecting water leak in the pipe is provided.

According to this, when the concentrated salt water leaking from the pipe due to the leakage of the pipe flows into the diluted salt water tank as described above, the concentration sensor causes the concentration increase of the diluted salt water due to the inflow of the concentrated salt water. Detect as water leak. Therefore, even if the user is not on the spot, the leak of the pipe is automatically detected,
The leak can be dealt with quickly.

A third feature of the present invention resides in that, in the second feature, the through hole is provided near the concentration sensor.

According to this, since the rise in the concentration of the diluted salt water is detected more quickly by the concentration sensor, the water leakage detecting means can also detect water leakage more quickly.

A fourth aspect of the present invention is the same as the second aspect, in which the inside of the dilute salt water tank is partially communicated with the dilute salt water tank by a partition plate standing on the bottom surface of the dilute salt water tank. This is because it is divided into two liquid chambers, the concentration sensor is accommodated in one liquid chamber, and the through hole is located above the same liquid chamber.

According to this, since the volume of the liquid chamber into which the concentrated salt water flows can be made small, when water leaks in the pipe, the concentration of the liquid chamber rapidly rises, and the concentration sensor rarely rises. Detect the concentration of salt water. Therefore, the water leak detection means can detect the water leak more quickly.

[0013]

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.

This electrolyzed water producing apparatus stores 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, and a diluted salt water supplied from the diluted salt water tank 20. The electrolytic cell 30 for electrolysis, the acidic ion water tank 40 for storing the acidic ion water generated in the electrolytic cell 30, and the alkaline ion water tank 50 for storing the alkaline ion water generated accompanying the generation of the acidic ion water. It has and.

The concentrated salt water tank 10 is replenished with a large amount of salts such as sodium chloride and potassium chloride, and a lid 10a covering the upper surface of the tank 10 is connected to a lower end outlet of a water supply pipe 11 to supply water. An external water supply source (not shown) (for example,
Water is supplied to the inside of the tank 10. The concentrated salt water tank 10 is constantly filled with concentrated salt water obtained by dissolving the replenished salt in a substantially saturated state with water,
The remaining undissolved salt S is always settled at the bottom of the tank 10. A water level sensor 13 is housed in the concentrated salt water tank 10. The water level sensor 13 detects that the water level of the concentrated salt water is equal to or higher than a predetermined upper limit water level, and also detects that the water level of the concentrated salt water is equal to or lower than a lower limit water level lower than the upper limit 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 above the lower limit water level so that the precipitated salt S is not mixed. Only the lower position opens. 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.

The dilute salt water tank 20 is, as shown in FIG.
The partition plate 21 is installed upright so that the upper end is lower than the predetermined lower limit water level, and the upper part is in communication with the first chamber R1.
And the second chamber R2. The capacities of both chambers R1 and R2 are set to, for example, about 1: 3, and a lid 20a that covers the upper surface of the tank 20 has a recessed portion that is recessed downward with a partition plate 21 sandwiched above the chambers R1 and R2. 20a1 is provided. A lower end outlet of a supply pipe 14 is connected to a hole 20a2 provided in a portion of the recess 20a1 located above the second chamber R2, and the concentrated salt water is supplied to the second chamber R2 via the supply pipe 14. It is supposed to be done. Recess 20a
Numeral 1 is further recessed at the peripheral portion, and a plurality of drain holes 20 are provided in the recessed portion at a position above the first chamber R1.
a3 is provided.

A lower end outlet of a water supply pipe 22 is connected to a hole 20a4 provided in a portion of the lid 20a located above the first chamber R1, and the diluted salt water tank 20 is provided with the water supply pipe 22. Water is supplied from an external water supply source when the electromagnetic valve 23 is open. Further, a concentration sensor 24 is attached to a hole 20a5 provided above the first chamber R1 of the lid 20a and provided in the vicinity of the water drain hole 20a3.
The concentration C of diluted salt water within 0 is detected. Further, a water level sensor 25 is attached to the lower surface of the portion of the lid 20a located above the second chamber R2, and the water level sensor 25 detects that the water level of the dilute salt water has become equal to or lower than the predetermined lower limit water level. At the same time, it is also detected that the water level of the dilute salt water is higher than or equal to the upper water level higher than the lower water level.

At the bottom of the dilute salt water tank 20, an inlet of a supply pipe 27 for supplying dilute salt water to the stirring conduit 26 and the electrolytic cell 30 is connected. The other end of the conduit 26 is connected to the side wall of the dilute salt water tank 20, and an electric pump 28 is interposed in the middle of the pipe 26.
Stirs the diluted salt water in the diluted salt water tank 20 in the operating state. An electric pump 29 is also installed in the supply pipe 27,
The pump 29 supplies the diluted salt water in the diluted salt water tank 20 to the electrolytic cell 30 via the supply pipe 27 in the operating state.

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 pipe 16 is located at a position slightly higher than the upper limit water level detected by the water level sensors 13 and 25, respectively. And opened in each tank 10, 20. Thus, when the water level of each of the tanks 10 and 20 becomes higher than the position of each of the openings of the overflow pipe 16, the salt water in each of the tanks 10 and 20 is discharged to the outside.

The inside of the electrolytic cell 30 is divided into an anode chamber 32 and a cathode chamber 33 by a diaphragm 31, and each electrode chamber 3
2 and 33 are provided with the supply pipe 27 by the operation of the electric pump 29.
Dilute salt water is supplied through the. In each of the electrode chambers 32 and 33, a positive electrode 34 and a negative electrode 35 to which a positive and negative DC voltage is applied from a DC power supply device 60 are arranged so as to face each other. By applying this DC voltage, the diluted salt water supplied from the diluted salt water tank 20 is electrolyzed, and the anode chamber 32
The acidic ionized water (electrolyzed water) generated in
Is supplied to the acidic ionized water tank 40 via. The alkaline ionized water (electrolyzed water) generated in the cathode chamber 33 is supplied to the alkaline ionized water tank 50 via the outlet pipe 37. The outlet pipe 37 opens near the bottom of the alkaline ionized water tank 50.

One end of a take-out pipe 41 is connected to the bottom of the acidic ionized water tank 40, and a cock 42 is inserted in the same pipe 41. By operating the cock 42, the acid is properly supplied from the other end of the take-out pipe 41. Ion water is taken out. A water level sensor 43 is housed in the acidic ionized water tank 40, and the sensor 43 detects that the water level of the acidic ionized water is equal to or higher than the upper limit water level near the full capacity of the tank 40, and It also detects that the water level is below the lower water level, which is lower than the upper water level. Further, the acidic ionized water tank 40 is provided with an overflow pipe 44, the upper end of the panel 44 extends to a position higher than the upper limit water level of the tank 40, and the lower end of the pipe 44 has an intermediate portion of the outlet pipe 37. It is connected to the. The overflow pipe 44 has a function of discharging excess acidic ionized water to the alkaline ionized water tank 50, and also has a function of melting chlorine gas generated by electrolysis into the alkaline ionized water.

A discharge pipe 51 also enters the alkaline ionized water tank 50, and the alkaline ionized water in the tank 50 is discharged to the outside by the operation of an electric pump 52 provided in the pipe 51. . Further, the alkaline ionized water tank 50 also contains a water level sensor 53, which detects that the alkaline ionized water has reached a predetermined upper limit water level or more, and the alkaline ionized water level has the same upper limit. It also detects that the water level is below the lower water level, which is lower than the water level.

The electrolyzed water generating apparatus includes the various sensors 1
3, 24, 25, 43, 53, electromagnetic valves 12, 15,
23, electric pumps 28, 29, 52 and DC power supply device 6
It comprises an electrical control circuit 70 connected to zero. The electric control circuit 70 is composed of a microcomputer and executes a program corresponding to the flowcharts shown in FIGS. 3 and 4 to open / close the electromagnetic valves 12, 15, 23, the electric pumps 28, 29, 52 and the DC power source. Device 60
Control the operation of. Further, the electric control circuit 70 includes
The operation switch 71, the alarm device 72, and the display device 73 are also connected. The operation switch 71 is for controlling the start and stop of the operation of this electrolyzed water generator, and can be switched to an on state or an off state by a manual operation, and
It is controlled by a built-in electromagnetic solenoid to switch from an on state to an off state. Alarm 72
Is for issuing an alarm when water leaks from the supply pipe 14,
The indicator 73 is for displaying that water leakage has occurred at the same time.

Next, the operation of the embodiment configured as described above will be described. A large amount of salt S such as sodium chloride and potassium chloride is put into the concentrated salt water tank 10 to supply the concentrated salt water in the tank 10. It is made almost saturated and the residual salt S is always settled on the bottom of the tank 10. If the salt S is insufficient, it is replenished as needed. After that, when the power switch (not shown) is turned on, the electric control circuit 70 starts executing the program in step 100 of FIG. 3, the initial water supply process for the concentrated salt water tank 10 in step 102, and the diluted salt water in step 104. Initial water supply process for tank 20 and step 106
Then, the initial concentration adjusting process of the diluted salt water tank 20 is executed.

In the initial water supply process to the concentrated salt water tank 10 in step 102, if the water level of the concentrated salt water detected by the water level sensor 13 is less than the upper limit water level, the electromagnetic valve 12 is turned on until the water level reaches the upper limit water level. And the concentrated salt water tank 10 is supplied with water from the outside. Step 1
In the initial water supply process for the diluted salt water tank 20 of 04, if the water level of the diluted salt water detected by the water level sensor 25 is less than the upper limit water level, the electromagnetic valve 23 is switched to the ON state until the same water level reaches the upper limit water level, Dilute salt water tank 20
Water is externally supplied to the first chamber R1. Step 10
In the initial concentration adjustment processing of the dilute salt water tank 20 of 6,
By supplying water to the dilute salt water tank 20, the same tank 20
The concentration of dilute salt water is a small amount ΔCo than the predetermined low concentration Co
When the concentration sensor 24 detects this, the electromagnetic valve 15 is switched on to replenish concentrated salt water from the concentrated salt water tank 10 to the second chamber R2 of the diluted salt water tank 20. Then, the density sensor 23
When the concentration of the diluted salt water detected by means of the upper limit value Co + ΔCo which is slightly higher than the predetermined low concentration Co by ΔCo, the electromagnetic valve 15 is turned off to stop the supply of the concentrated salt water. By the processes of these steps 102 to 106, the concentrated salt water is stored in the concentrated salt water tank 10 up to the upper limit water level, and in the diluted salt water tank 20, almost predetermined low concentration Co is stored.
Is stored up to the upper limit water level.

After the processing of these steps 102 to 106, the electric control circuit 70 determines in step 108 whether the operation switch 71 is in the ON state. The process of step 108 is continued while the operation switch 71 is kept in the off state. When the operation switch 71 is switched to the ON state, it is determined to be “YES” in step 108 and the program is advanced to step 110.

Steps 110 to 116 are processes for setting the initial state of the electrolyzed water producing apparatus to either the electrolyzed water producing state or the production standby state. That is, if the water level of the acidic ionized water detected by the water level sensor 43 is less than the upper limit water level, the electric pumps 28, 29 and the DC power supply device 60 are operated in step 112 based on the determination of “NO” in step 110. After switching to the state, the dilute salt water in the dilute salt water tank 20 is stirred, and the dilute salt water is continuously supplied to the electrolytic cell 30 via the supply pipe 27 and the electrolytic cell 30.
A DC voltage is applied between the positive and negative electrodes 34, 35 of the. As a result, the dilute salt water supplied to the electrolytic bath 30 begins to be electrolyzed, and the acidic ionized water produced by the electrolysis starts to be supplied from the anode chamber 32 into the acidic ionized water tank 40 via the outlet pipe 36, and the alkaline ionized water is discharged. Water starts to be supplied from the cathode chamber 33 to the alkaline ionized water tank 50 via the outlet pipe 37. After the above processing, the flag FLG is set to a value "1" representing the generation state of electrolyzed water in step 114, and the program proceeds to step 118. On the other hand, if the water level of the acidic ionized water detected by the water level sensor 43 has reached the upper limit water level, “YE
Based on the determination of "S", the flag FLG is set to a value "0" representing the electrolytic water generation standby state in step 116, and the program proceeds directly to step 118.

In step 118, the operation switch 7
It is again determined whether 1 is in the ON state. In this case, since the operation switch 71 has been switched to the ON state as described above, it is determined to be "YES" in step 118, and the program proceeds to step 122 of FIG.

In step 122, the flag FLG
Is "1". If the flag FLG is set to "1" indicating the generation state of electrolyzed water, it is determined in step 124 whether or not the water level of the acidic ionized water detected by the water level sensor 43 has reached the upper limit water level. judge. If the water level of the acidic ionized water has not reached the upper limit water level, the program proceeds to step 136 based on the judgment of “NO” in step 124. Step 1
Also in 36, the flag FLG is checked, but in this case as well, it is determined to be "YES" and the program is executed in step 13
8 to 142.

In step 138, the water level sensor 1
When the water level of the concentrated salt water in the concentrated salt water tank 10 becomes equal to or lower than the lower limit water level based on the water level detection by No. 3, the electromagnetic valve 12
Is switched on, and by the water supply by the same switching,
When the water level of the concentrated salt water in the tank 10 becomes equal to or higher than the upper limit water level, the electromagnetic valve 12 is turned off. In step 140, based on the water level detection by the water level sensor 25, the electromagnetic valve 23 is turned on when the water level of the dilute salt water in the dilute salt water tank 20 becomes equal to or lower than the lower limit water level, and the tank is supplied with water by the switching. When the water level of the dilute salt water in 20 reaches or exceeds the upper water level, the electromagnetic valve 2
Switch 3 to the off state. Further, in step 142, based on the concentration detected by the concentration sensor 24, the concentration of the diluted salt water in the diluted salt water tank 20 is the lower limit value Co-ΔC.
When it becomes lower than o, the electromagnetic valve 15 is switched to the ON state, and when the concentration of the diluted salt water in the tank 20 becomes equal to or higher than the upper limit value Co + ΔCo due to the supply of the concentrated salt water by the switching, the electromagnetic valve 15 is turned off. Switch to the state. It should be noted that these steps 138 to 142 do not stop the progress of the program during the supply of water or concentrated salt water, and the respective controls of the steps 138 to 142 are repeated during the circulation process of steps 118 to 144. It is done.

After the processing of steps 138 to 142, the concentration C detected by the concentration sensor 24 in step 144 is larger than the upper limit value Co + ΔCo.
It is determined whether or not it is + α or more. If the detected concentration C is not equal to or higher than the water leakage detection value Co + α, it is determined to be “NO” in step 144, so the electric control circuit 70 continues to repeatedly execute the circulation processing of steps 118, 122, 124, 136 to 144. Therefore, during this circulation process,
The concentrated salt water in the concentrated salt water tank 10 and the diluted salt water in the diluted salt water tank 20 are maintained between the lower limit water level and the upper limit water level, and the concentration of the diluted salt water in the diluted salt water tank 20 is the lower limit value Co−.
It is maintained between ΔCo and the upper limit value Co + ΔCo. Then, the diluted salt water is continuously electrolyzed in the electrolytic bath 30, and the electrolyzed acidic ion water and alkaline ion water are the acidic ion water tank 40 and the alkaline ion water tank 5.
It keeps accumulating at 0.

When the acidic ionized water tank 40 becomes nearly full due to the accumulation of the acidic ionized water and the water level sensor 43 detects the upper limit water level, the step 124 during the circulation process is performed.
And the program is judged to be "YES" at step 126.
Proceed to. In step 126, the electric pump 2
8, 29 and the DC power supply device 60 are switched to the non-operating state, and the electromagnetic valves 12, 15, 23 are switched to the off state. The electromagnetic valves 12, 1 already in the off state
Regarding Nos. 5 and 23, they are kept in the off state as they are. Thereby, stirring of the diluted salt water in the diluted salt water tank 20, supply of the diluted salt water from the diluted salt water tank 20 to the electrolytic cell 30, water supply to the concentrated salt water tank 10 and the diluted salt water tank 20, the diluted salt water tank 20.
The adjustment of the concentration of the diluted salt water in the inside and the voltage application to the positive and negative electrodes 34, 35 are stopped, and the electrolyzed water producing apparatus is in a standby state for producing electrolyzed water. After the processing in step 126, the flag FLG is set to "0" in step 128 and the program proceeds to step 136. In step 136, since it is determined to be "NO" based on the flag FLG set to "0", the processes of steps 138 to 142 are not executed.

On the other hand, the acidic ionized water stored in the acidic water ionized water tank 40 as described above is taken out to the outside through the take-out pipe 41 and used by operating the cock 42. Also, alkaline ionized water tank 5
When the alkaline ionized water is almost filled to 0 and the water level sensor 53 detects that the ionized water reaches the upper limit water level, the electric control circuit 70 operates the electric pump 52 by executing a program not shown, Drain pipe 5 for alkaline ionized water in alkaline ionized water tank 50
It is discharged to the outside via 1. The operation of the electric pump 52 is stopped when the water level sensor 53 detects the lower limit water level.

When the electrolytic water generation standby state is entered as described above, it is determined to be "NO" based on the flag FLG set to "0" in step 122 as well, and the program proceeds to step 130. In step 130, it is determined whether or not the water level of the acidic ionized water detected by the water level sensor 43 has reached the lower limit water level. If the water level of the acidic ionized water in the acidic ionized water tank 40 does not drop to the lower limit water level, it is determined to be “NO” in step 130. Therefore, in this case, the electric control circuit 70 executes the circulation process including steps 118, 122, 130, 136 and 144 to keep the electrolyzed water generation device in the generation standby state.

On the other hand, the acidic ionized water tank 4 as described above
When the water level in the tank 40 is lowered by the extraction of the acidic ionized water in 0 and the water level sensor 43 detects the lower limit water level, the electric control circuit 70 causes the step 13 in step 13 during the circulation process.
It is determined to be “YES” at 0, the electric pumps 28 and 29 and the DC power supply device 60 are switched to the operating state at step 132, and the flag FLG is set at step 134.
To “1”. As a result, the electrolyzed water producing apparatus is returned to the electrolyzed water producing state, and again produces acidic ionized water and alkaline ionized water to produce the acidic ionized water tank 4
0 and the alkaline ionized water tank 50 starts to store.

In addition, steps 118 to 14 as described above
When the operation switch 71 is manually turned off during the circulation process of No. 4, the electric control circuit 70 determines “YES” in step 118 and advances the program to step 120. In step 120, the electric pumps 28, 29, 52 and the DC power supply device 60 are switched to the non-operating state, and the electromagnetic valves 12, 15, 23 are turned on.
Is turned off. In this case as well, the electric pumps 28, 29, 52 and the DC power supply device 60 in the inoperative state and the electromagnetic valves 12, 15, 23 in the off state are maintained in the inoperative state and the off state as they are. As a result, in this case, all the operations of the electrolyzed water generator except the electric control circuit 70 are stopped and controlled. And
The electric control circuit 70 continues to execute the processing of steps 118 and 120 until the operation switch 71 is turned on next.

Further, during the circulation process consisting of steps 118 to 144, the concentrated salt water leaked from the supply pipe 14 and leaked from the supply pipe 14 is the first chamber R1 of the dilute salt water tank 20.
When the concentration of the diluted salt water in the diluted salt water tank 20 becomes high and the concentration C detected by the concentration sensor 23 becomes the leakage detection value Co + α or more, the electrical control circuit 70 determines “YES” in step 144. Then, the program proceeds to steps 146-152. In step 146,
Similar to step 120, the electric pumps 28, 29,
52 and the DC power supply device 60 are switched to the non-operating state, and the electromagnetic valves 12, 15, 23 are switched to the OFF state. In step 148, the operation switch 71
By controlling the electromagnetic solenoid built in, the operation switch 71 is turned off. Also, step 150
In step 1, the alarm device 72 is controlled to generate an alarm sound, and in step 152, the display device 73 is controlled to display that water is leaking in the supply pipe 14. Then, after the processing of these steps 146 to 152, the execution of the program is ended by the processing of step 154. In this case, the program control described above is not performed unless the power is newly turned on.

As described above, in the electrolyzed water producing apparatus of the above embodiment, even when water is leaked due to damage to the supply pipe 14 or poor connection with the electromagnetic valve 15, the same leaks from the supply pipe 14. The concentrated salt water flows along the outer periphery of the supply pipe 14 into the recess 20a1 of the lid 20a of the diluted salt water tank 20, and flows into the first chamber R1 of the diluted salt water tank 20 through the water drain hole 20a3. There is no leakage to the outside. In this case, the peripheral portion of the recess 20a1 is further recessed, and the drainage hole 20a3 is formed in the recessed portion.
Since the above structure is provided, the concentrated salt water accumulated in the recess 20a1 easily flows into the dilute salt water tank 20.

Further, when the concentration C of the diluted salt water in the diluted salt water tank 20 becomes abnormally high due to the inflow of the concentrated salt water, the apparatus is irrelevant to the electrolytic water generation state and the generation standby state of the electrolytic water generation apparatus. Is stopped. Particularly, even when the electrolyzed water producing apparatus is in a standby state for production of electrolyzed water and the concentration of the dilute salt water in the dilute salt water tank 20 tends to increase due to the inflow of the concentrated salt water, the operation of the device is stopped.
When the device shifts from the generation standby state to the generation state,
An abnormally high concentration of salt water is not electrolyzed in the electrolytic cell 30, and substantially homogeneous electrolytic water is always generated in the electrolytic cell 30. In addition, since salt water having a high concentration is not electrolyzed in the electrolytic cell 20, the electrodes 34 and 35 are
Of deterioration is avoided. Furthermore, the salt S for producing concentrated salt water is not wasted. Further, when the production of the electrolyzed water is stopped, the alarm 7 indicates that the concentration of the diluted salt water is abnormal.
2 and the display 73 inform the user, and the user can visually and audibly recognize the leakage of water in the supply pipe 14, and can promptly deal with the leakage.

When such water leaks, the dilute salt water tank 20 is divided into the first chamber R1 and the second chamber R2 with the partition plate 21 communicating with the upper portion, and leaks from the supply pipe 14. Since the concentrated salt water flows into the first chamber R1 and the capacity of the first chamber R1 is small, the concentration of the dilute salt water in the first chamber R1 rapidly rises. On the other hand, the concentration sensor 24 for detecting the concentration used for detecting the water leakage is also provided in the first chamber R.
1 and is provided in the vicinity of the drain hole 20a3, the water leakage can be quickly determined. Therefore, it is possible to shorten the time for generating the non-homogeneous electrolyzed water in the electrolyzer 30, and the electrodes 34, 35
Can be suppressed to a minimum, and the user can promptly deal with the water leakage.

In step 142, the diluted salt water tank 2 is also used.
Even when adjusting the concentration of the dilute salt water in 0, as described above, the capacity of the first chamber R1 is small and the water supply from the outside is also supplied to the first chamber R1 via the water supply pipe 22, so the concentration of the dilute salt water is reduced. The decrease in is quickly detected. Therefore, the rate at which the concentration of the dilute salt water stored in the dilute salt water tank 20 decreases is suppressed to a low level, and homogeneous electrolyzed water is generated in the electrolytic cell 30.

In the above embodiment, the first chamber R1 and the second chamber R2 are made to communicate with each other above the partition plate 21, but a communication port is provided at an intermediate portion or a lower portion of the partition plate 21. The two chambers R1 and R2 may be communicated with each other at an intermediate portion or a lower portion of the partition plate 21.

In the above embodiment, the electrolytic cell 3 is used.
Only the acidic ionized water electrolyzed at 0 was taken out and used, but the alkaline ionized water was also taken out,
Both electrolyzed water of acidic ionized water and alkaline ionized water may be used. In this case, it is preferable that the alkaline ionized water tank 50 also be provided with a cock similar to the acidic ionized water tank 40 so that the alkaline ionized water can be taken out from the alkaline ionized water tank 50 as needed. Further, in this case, the alkaline ionized water tank 50 is also accommodated with a water level sensor similar to the acidic ionized water tank 40, and the production state and the production standby state of the electrolyzed water producing device are set to the respective water levels of both tanks 40 and 50. The switching may be controlled accordingly.

[Brief description of drawings]

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

2A is a vertical cross-sectional view of the dilute salt water tank of FIG. 1, and FIG. 2B is a plan view of the tank.

FIG. 3 is a flowchart showing a first half of a program executed by the electric control circuit (microcomputer) of FIG.

FIG. 4 is a flowchart showing a latter half of the program.

[Explanation of symbols]

10 ... Concentrated salt water tank, 11 ... Water supply pipe, 12 ... Electromagnetic valve, 13 ... Water level sensor, 14 ... Supply pipe, 15 ... Electromagnetic valve, 20 ... Dilute salt water tank, 20a ... Lid, 20a1 ... Recessed portion, 20a3 ... Drain hole , 21 ... Partition plate, 22 ... Water supply pipe, 23 ... Electromagnetic valve, 24 ... Concentration sensor, 25 ... Water level sensor, 27 ... Supply pipe, 29 ... Electric pump, 30 ... Electrolyzer, 40 ... Acid ion water tank, 50 ... Alkaline ionized water tank, 60 ... DC power supply device, 70 ... Electric control circuit (microcomputer), 71 ... Operation switch, 72
... alarm, 73 ... indicator.

Claims (4)

[Claims] 1. A diluted salt water tank having a concentrated salt water tank storing a predetermined high concentration of concentrated salt water, and a lid provided below the concentrated salt water tank and covering an upper surface thereof, and storing a diluted salt water of a predetermined low concentration. A pipe having one end connected to the concentrated salt water tank and the other end connected to the lid of the diluted salt water tank, and a valve provided in an intermediate portion, and water supply means for selectively supplying water to the diluted salt water tank from the outside. A concentration sensor that is housed in the dilute salt water tank and detects the concentration of dilute salt water in the dilute salt water tank; and a concentration sensor that is housed in the dilute salt water tank and detects the level of dilute salt water in the dilute salt water tank. A water level sensor, while controlling the water supply means based on the water level detected by the water level sensor to keep the water level of the dilute salt water in the dilute salt water tank substantially constant, and based on the concentration detected by the concentration sensor. Opening the valve And a control means for keeping the concentration of the diluted salt water in the diluted salt water tank substantially constant, and supplying the diluted salt water in the diluted salt water tank to the electrolytic cell for electrolysis. 3. The electrolyzed water producing apparatus according to claim 1, wherein a recess is provided around a portion of the lid of the diluted salt water tank and the pipe is connected, and a through hole is provided in the recess. 2. The electrolyzed water producing apparatus according to claim 1, wherein when the concentration of the dilute salt water detected by the concentration sensor is equal to or higher than a predetermined concentration higher than the predetermined low concentration, water leakage in the pipe is detected. An electrolyzed water generating device, characterized in that it is provided with a water leakage detecting means for 3. The electrolyzed water producing apparatus according to claim 2, wherein the through hole is provided near the concentration sensor. 4. The electrolyzed water generating apparatus according to claim 2, wherein the inside of the diluted salt water tank is partially connected by a partition plate standing on the bottom surface of the diluted salt water tank.
An electrolyzed water producing apparatus characterized by being divided into two liquid chambers, the concentration sensor being housed in one liquid chamber, and the through hole being located above the same liquid chamber.