JP2532339B2 - Sterile water production equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilized water producing apparatus for sterilizing and discharging water.

[0002]

2. Description of the Related Art A device for separating water into acidic water and alkaline water has been developed as a device for producing water having sterilizing power. An outline of this device is shown in the sectional view of FIG. This apparatus includes an electrolytic cell 2 for separating water into acidic water and alkaline water. The electrolytic cell 2 is provided with electrodes 8 facing each other inside, and partitions between the opposing electrodes 8 are partitioned by partition walls 9. The partition wall 9 prevents mixing of the separated water into acidic water and alkaline water, and uses a microporous membrane that allows ions to pass but does not allow water to pass freely. In this device, when the water flowing into the electrolytic cell 2 is energized, − ions such as chlorine ions are gathered in the vicinity of the + electrode 8 and become acidic water, and + ions such as sodium and calcium are in the vicinity of the − electrode 8. Collected into alkaline water. The pH of the acidic water and the alkaline water changes depending on the magnitude of the electric current between the electrodes 8. When the current is increased, the pH of the acidic water decreases and the pH of the alkaline water increases. That is, when a large current is applied to the electrode 8, it can be separated into strong acidic water and alkaline water. Strong acidic water and alkaline water have strong bactericidal power and almost instantly sterilize water. Further, since no disinfectant is added, no odor is generated unlike chlorine. The acidic water and the alkaline water are separately discharged and then mixed and discharged. In the device for mixing and discharging acidic water and alkaline water, when the electrode 8 is washed, the pH of the discharged water is maintained even when the +-polarity of the electrode 8 is reversed or when the electrode 8 is washed. It does not change. Therefore, it can be conveniently used.

[0003]

In the apparatus shown in FIG. 1, in order to strengthen the acidity and alkalinity of water, electrolytic substance adding means 1 adds an electrolytic substance such as sodium chloride. Water with added electrolyte has a low electrical resistance,
The current between the two increases, the pH of the acidic water decreases, the pH of the alkaline water increases, and the acidic water and the alkaline water can be separated. Strongly acidic water and strong alkaline water have strong bactericidal power. Further, when the current between the electrodes 8 is increased, the redox potential of acidic water and alkaline water increases. Increasing the redox potential is also effective in increasing the sterilizing power of water. Furthermore, when the inter-electrode current is increased, oxygen and chlorine contained in water are liberated to generate oxygen and chlorine as a generating group, which also increase the sterilizing power.

As described above, adding an electrolytic substance to make water in which electricity easily flows, and flowing this water into the electrolytic cell to increase the current between the electrodes are effective in strengthening the sterilizing power of water. There is. This is extremely important for a sterile water production system. However, if an electrolytic substance is added to the water in the electrolysis tank to separate it into strong acidic water and alkaline water, there is an adverse effect that the durability of the device is reduced. This is because the metal part is corroded by the acidic water, the scale adhesion is promoted by the alkaline water, and the electrode is seriously damaged. Acidic water has strong oxidizing power, and alkaline water contains substances such as calcium that easily adhere,
It is impossible in principle to change this state. For this reason, the present inventor has considered that it is impossible to increase the durability of the device. This is because it is not possible to completely prevent oxidation by acidic water and it is impossible to completely prevent the scale contained in alkaline water from adhering. Especially, the pH of acidic water is reduced and the pH of alkaline water is also reduced.
The larger the value and the stronger acidic water and alkaline water, the lower the durability of the device. This is because the oxidizing power of the acidic water becomes stronger and the scale of the alkaline water tends to adhere. When the metal is oxidized by the acidic water, the metal part is corroded and the durability is reduced. When the scale is adhered by the alkaline water, the electric resistance of the electrode surface is increased and the current is decreased. Further, the scale attached to the electrode penetrates between the metals of the electrode in which titanium and platinum are laminated, peels off the metal, and damages the electrode. Further, the adhered scale is sandwiched between the valve seat and the valve body so that the valve is not completely closed, and the pipe is thinned to reduce the flow rate.

The present invention was developed for the purpose of solving these drawbacks of the prior art. An important object of the present invention is to effectively prevent oxidation by acidic water and scale adhesion due to alkaline water even when electrolyzing with strong acidic water and alkaline water in an electrolyzer to improve durability of electrodes and equipment. An object of the present invention is to provide a sterilized water manufacturing apparatus that can be extended.

[0006]

The sterilizing water producing apparatus of the present invention has the following arrangement in order to achieve the above object.
The sterilized water manufacturing apparatus includes an electrolytic substance adding means 1 and an electrolytic bath 2.
It has an on-off valve 12, a control means 6, and a power supply 3.
The electrolytic substance adding means 1 adds an electrolytic substance to the water flowing into the electrolytic bath 2. The electrolytic cell 2 electrolyzes the water to which the electrolytic substance has been added by the electrolytic substance addition means 1 into acidic water and alkaline water at the opposing electrode 8. The power supply 3 applies a voltage to the electrode 8 of the electrolytic cell 2. The on-off valve 12 is the electrolytic cell 2 when opened.
Pour water into. The control means 6 controls opening / closing of the opening / closing valve 12. In this device, the control means 6 opens the on-off valve 12 to allow water to flow into the electrolytic cell 2 and to convert the water flowed into the electrolytic cell 2 into acidic water and alkaline water by the electrode 8 for applying a voltage. To electrolyze.

Further, in the sterile water producing apparatus of the present invention, the control means 6 is equipped with a delay timer 13. The delay timer 13 specifies the time until the voltage of the electrode 8 is turned off and the on-off valve 12 is closed. After the electrode voltage is turned off by the delay timer 13, the opening / closing valve 12 is kept open for a certain period of time. When the open / close valve 12 is opened without applying a voltage to the electrode 8, a predetermined amount of water flows into the electrolytic cell 2. The water flowing into the electrolytic cell 2 in this state is not electrolyzed into acidic water and alkaline water, and the acidic water and alkaline water separated by applying a voltage to the electrode 8 are discharged. After the acidic water and the alkaline water are discharged, the open / close valve 12 is closed.

Further, in the sterilized water producing apparatus according to the second aspect of the present invention, the control means 6 is equipped with a flow rate sensor 14 instead of the delay timer 13. The flow rate sensor 14 specifies the flow rate until the opening / closing valve 12 is closed by turning off the electrode voltage. The on-off valve 12 is kept open until the electrode voltage is turned off and a constant flow rate of water is passed. The on-off valve 12 is opened in a state where no voltage is applied to the electrode 8 to flow a predetermined amount of water into the electrolytic cell 2, and the acidic water and alkaline water are discharged by this water to close the on-off valve 12. Is configured.

[0009]

In the apparatus for producing sterilized water of the present invention, the opening / closing valve 12 is not closed immediately after the voltage of the electrode 8 is turned off. If the on-off valve 12 is closed immediately after the electrode voltage is turned off, the electrolytic cell 2,
Also, acidic water or alkaline water remains in the discharge path connected to the electrolytic cell 2. The remaining acidic water oxidizes the metal and promotes corrosion, and the alkaline water adheres to the scale.

In order to prevent this adverse effect, the sterilized water producing apparatus of the present invention discharges acidic water and alkaline water by passing a certain amount of water even after the electrode voltage is turned off. The on-off valve 12 is closed by the delay timer 13 or the flow rate sensor 14 in order to turn off the electrode voltage and pass water to the electrolytic cell 2 or the like. The delay timer 13 starts counting when the electrode voltage is turned off, the time is up, and the on-off valve 12 is closed. The flow rate sensor 14 detects the flow rate that flows in after turning off the electrode voltage, and closes the on-off valve 12 after the set flow rate of water has passed.

As described above, the sterile water producing apparatus of the present invention is
A predetermined amount of water is passed even after the electrode voltage is turned off. The water that flows in when the electrode voltage is off discharges the acidic water and alkaline water separated in the electrolytic cell 2 and the acidic water and alkaline water remaining in the discharge path from the electrode 8. After discharging the acidic water and the alkaline water or the mixed water of the acidic water and the alkaline water from the electrolytic cell 2 and the discharge passage, the on-off valve 12 is closed.
When the on-off valve 12 is closed in this way, acidic water, alkaline water, etc. do not remain in the electrolytic cell 2 and the discharge passage. Unelectrolyzed fresh water remains in the electrolytic cell 2 and the discharge path. Fresh water does not corrode the inside of the electrolytic cell 2, does not adhere to scale, and does not damage the electrodes.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. However, the examples shown below exemplify a sterilized water production apparatus for embodying the technical idea of the present invention, the sterilized water production apparatus of the present invention, the material, shape, structure of the components, The layout and usage are not specified below. The sterilized water manufacturing apparatus of the present invention can be modified without departing from the scope of the claims.

Further, in this specification, in order to make it easy to understand the claims, the numbers corresponding to the members shown in the embodiments will be referred to as "claims", "actions", and "actions". In the column of "Means for solving the problem". However, the members shown in the claims are
It is by no means specific to the members of the examples.

The sterilizing water manufacturing apparatus shown in FIG.
1, an electrolytic substance adding means 1, an electrolytic bath 2, a power source 3, and a control means 6.

The open / close valve 12 is connected to the inflow side, and the open / close state is controlled by the control means 6. When the on-off valve 12 is opened, hot water or cold water flows into the electrolytic substance through the flow rate sensor 14, the mixer 7, the temperature sensor 15 and the filter 16. As shown in FIG. 2, the on-off valve 12
Is connected to the inflow side, no water pressure is applied to the electrolytic cell 2, so that the electrolytic cell 2 does not need to have a pressure resistant structure. However, the on-off valve does not necessarily have to be connected to the inflow side of the electrolytic cell,
For example, although not shown, it may be connected to the discharge side of the electrolytic cell.

The electrolytic substance adding means 1 measures the electric resistance of the supply tank 4 for storing the electrolytic substance, the supply pump 5 having the suction side connected to the supply tank 4, and the supply pump 5 by measuring the electric resistance of the electrode 8.
And a mixer 7 for adding the aqueous solution of the electrolytic substance sent from the supply pump 5 to the tap water.

The supply tank 4 is a tank which stores an electrolytic substance such as sodium chloride by dissolving it in water. Supply tank 4
Has a lid which can be opened and closed so that a predetermined amount of water and an electrolyte can be put therein. In the supply tank 4,
Preferably, the electrolyte is melted and stored in a saturated state. In order to store the electrolytic substance in a saturated state, a larger amount of electrolytic substance than the melting amount is supplied to the supply tank 4 containing water. When the water in the supply tank 4 is low, it is replenished, and when the electrolytic substance is no longer dissolved in water, it is supplied. When the electrolytic substance is dissolved in the supply tank 4 in a saturated state, the supply pump 5 can add a small amount of electrolytic substance-dissolved water from the supply tank 4 to adjust the conductivity of the water to be high.

The flow rate of the supply pump 5 is controlled so that the conductivity of the water flowing into the electrolytic cell 2 becomes constant. When the supply pump 5 supplies a large amount of electrolytic substance-dissolved water from the supply tank 4, the conductivity of the water flowing into the electrolytic cell 2 increases. On the contrary, when the flow rate of the supply pump 5 is reduced, the conductivity of water in the electrolytic cell 2 becomes low. The conductivity of water without the addition of electrolyte dissolved water varies with water. Tap water near the shore has a high salt content and high conductivity. Tap water in the mountains has a very low salt concentration and a low conductivity. Normal tap water has a conductivity of about 150 μS / cm.

The control means 6 controls the operation of the supply pump 5 so that the conductivity of the water flowing into the electrolytic cell 2 is kept constant. The control means 6 detects the voltage applied to the electrode 8 of the electrolytic cell 2 and the current supplied through the electrode 8 to detect the conductivity of water. When the conductivity of the water flowing into the electrolytic cell 2 becomes lower than the set value, the control means 6 quickly adjusts the rotation speed of the supply pump 5. When the rotation speed of the supply pump 5 increases, a large amount of electrolytic substance-dissolved water is supplied to the electrolytic cell 2 and the conductivity of the water increases. On the contrary, when the conductivity of water in the electrolytic cell 2 becomes high, the control means 6 slows down the rotation of the supply pump 5 to adjust the conductivity of water to be low. The control means 6 controls the operation of the supply pump 5 to adjust the conductivity of the water flowing into the electrolytic cell 2 to about 1000 to 1500 μS / cm. The control means 6 controls the conductivity of water in the electrolytic cell 2 to be 300 to 300.
0 μS / cm, preferably 500 to 2000 μS / cm
It can be adjusted so that

In the electrolytic cell 2, plate-like electrodes 8 are arranged facing each other in a watertight casing. A partition wall 9 is provided between the electrodes 8 to form two ion water channels 10 inside the electrolytic cell 2.
Is divided into When one of the ion channels 10 is an acidic channel, the other is an alkaline channel. Ion waterway 10
Is a microporous membrane that allows ions to pass therethrough and prevents free passage of water. In the ion channel 10, the + electrode 8 side is an acidic channel, and the − electrode 8 side is an alkaline channel. The electrode 8 is connected to the DC power supply 3. One electrode 8
Is connected to the + side of the power supply 3, the other electrode 8 is connected to the − side of the power supply 3. The electrode 8 has a fixed cycle of +-
Connect in reverse. This is to prevent foreign matter from adhering to the surface of the electrode 8.

In the electrolytic cell 2 shown in FIG. 2, the partition wall 9 is not extended to the upper end, and the upper part of the electrode 8 is a mixing part 17 of acidic water and alkaline water. The acidic water and the alkaline water are mixed at the upper part of the electrolytic cell 2 not partitioned by the partition walls 9. However, as shown in the figure, the mixing section 17 does not necessarily have to be provided in a part of the electrolytic cell 2. When the acidic water and the alkaline water are discharged through the discharge passage such as one hose or pipe, they are mixed in the discharge passage.
However, the discharge path may be the mixing section 17.

Further, in the apparatus shown in FIG. 2, the electrolytic cell 2 is divided by the partition wall 9 into two ion water channels 10, and the drain water discharge section 11 is connected to both of the ion water channels 10. Electrolyzer 2
Does not necessarily need to be separated into two ion channels 10 by the partition wall 9. This is because the apparatus of the present invention mixes and discharges acidic water and alkaline water. However, the device of the present invention discharges a part of the alkaline water to adjust the pH of the mixed water.
Needs to approach from neutral to acidic. In order to discharge a part of the alkaline water, the drain drain 1
1 is connected. The drain drain portion 11 connected to the vicinity of the electrode 8 opens the switching valve 11A of the drain drain portion 11 connected to the vicinity of the electrode 8 connected to the negative power source 3 to discharge a part of the alkaline water. it can. In the vicinity of the negative electrode 8,
This is because alkaline water is separated.

The electrolytic cell 2 is provided with a drain drainage section 11 for discharging a part of alkaline water from the ionized water separated by the electrode 8. Alkaline water can be formed in the vicinity of the electrode 8. Since the electrolyzer 2 shown in the figure is used by switching + and-of the electrode 8,
A drain drainage section 11 is provided in each of the ion water channels 10 partitioned by the partition wall 9. The drain drain 11 connected to both the ion water channels 10 discharges a part of the alkaline water from the ion water channel 10 from which the alkaline water is separated. The drain drain section 11 includes a switching valve 11A for discharging alkaline water. As the switching valve 11A, an electromagnetic valve or a motor valve that is opened and closed by a motor is used. Switching valve 1
1A is opened to discharge a part of the alkaline water in the ion water channel 10. The flow rate at which the drainage section 11 discharges the alkaline water is adjusted so that the pH of the mixed water of the acidic water and the alkaline water to be discharged is in the range of 5 to 7.5. That is, the discharge amount of the drain discharge section 11 is adjusted so that water obtained by mixing acidic water with partially discharged alkaline water becomes neutral to acidic. The acidic water and the alkaline water separated in the electrolysis tank 2 have a pH of the acidic water of 2.5 to 4 and p of the alkaline water.
H is 10 to 12 and shows considerably strong acidity and alkalinity. Therefore, use a small amount of alkaline water to drain the drain 11
It is possible to change the pH of the water mixed with these from neutral to weakly acidic.

Power source 3 for supplying electric power to the electrode 8 of the electrolytic cell 2
Is a DC power supply 3. The output voltage is 10 to 50 so that a current of 1 to 5 A can be passed between the electrodes.
It is set in the range of V. Although not shown, the power supply has a built-in output voltage variable circuit. By changing the output voltage of the power supply, the pH of the acidic water and alkaline water separated in the electrolytic cell can be adjusted. When the power supply voltage is increased, acid water p
H is small, and the pH of alkaline water increases, and it becomes more acidic and alkaline.

The output side of the power source 3 is connected to the electrode 8 via the changeover switch 18. The electrode 8 is formed by laminating a platinum thin film on the surface of titanium. Changeover switch 1
8 is controlled by the control means 6 so that the electrode 8 +-
Reverse. The change-over switch 18 is a switch that interlocks with two circuits and two contacts, and is controlled by the control means 6. The control means 6 changes the switch 18 at a cycle of, for example, several minutes to several hours.
To switch the polarity of the electrode 8. When the changeover switch 18 is switched, the ion water channel 10 of the electrolytic cell 2 is changed.
However, acidic water and alkaline water are the opposite. This is because the acidic water is formed in the positive electrode 8 and the alkaline water is formed in the vicinity of the negative electrode 8. Since the drain drainage section 11 constantly discharges a part of the alkaline water from the electrolytic cell 2, the control means 6 switches the changeover switch 18 and at the same time also switches the changeover valve 11A of the drain drainage section 11. That is, the switching valve 11A of the drain drainage unit 11 connected to the vicinity of the negative electrode 8 is opened, and the switching valve 11A connected to the vicinity of the positive electrode 8 is closed.

The control means 6 controls the on-off valve 12, the supply pump 5 of the electrolytic substance addition means 1, the changeover switch 18, and the changeover valve 11A of the drain drain section 11. Control means 6
Incorporates a delay timer 13 that specifies the time for closing the on-off valve 12.

The delay timer 13 starts counting when the electrode voltage is turned off. When the delay timer 13 times out, the control means 6 closes the open / close valve 12.
The delay timer 13 determines the time until the opening / closing valve 12 is closed after the voltage of the electrode 8 is turned off. The sterilized water manufacturing apparatus shown in FIG. 2 does not close the opening / closing valve 12 immediately after turning off the electrode voltage. After turning off the electrode voltage, water is allowed to flow for a certain period of time to drain the ionized water remaining in the electrolytic cell 2 and the pipe. When the control means 6 is composed of a microcomputer, it is not necessary to incorporate a dedicated timer circuit as the delay timer 13. The delay timer 13 can also be configured by microcomputer software. Therefore, the present invention does not specify the circuit configuration of the delay timer 13. As the delay timer 13, any means capable of counting the set time can be used.

The control means of the sterile water producing apparatus shown in FIG.
The following operations are performed. (1) When the operation switch 19 is pushed, the control means 6 opens the open / close valve 12. In this state, no voltage is applied to the electrode 8. (2) When the opening / closing valve 12 is opened, water (hot water if necessary) flows into the electrolytic cell 2. The inflow of water or warm water is detected by the flow rate sensor 14. (3) The flow rate sensor 14 inputs a signal informing that water has flowed into the control means 6. (4) The signal from the flow sensor 14 causes the control means 6 to
The power supply 3 is switched on and a DC voltage is applied to the electrode 8 of the electrolytic cell 2. In this state, the water flowing into the electrolytic cell 2 is
Electrolyzed into acidic water and alkaline water. (5) The control means 6 turns on the power supply 3 and opens the switching valve 11A of the drain drainage portion 11 on one side. The switching valve 11A is connected to the ion water channel 10 for separating alkaline water. That is, the drain drainage section 11 of the ion channel 10 containing the electrode 8 connected to the-side of the power source 3
The switching valve 11A is opened. The switching valve 11A of the ion channel 10 containing the electrode 8 connected to the + side of the power source 3 is kept closed. The opened switching valve 11A is used for the electrolytic cell 2
Drain a part of the alkaline water separated in. (6) Alkaline water partially drained is mixed with acidic water,
It is discharged from the electrolytic cell 2. In this state, the water discharged from the electrolytic cell 2 leans toward neutral or acidic. This is because part of the alkaline water is discharged and the mixing ratio of the alkaline water to the acidic water is reduced. (7) In the process in which the electrolyzer 2 electrolyzes water into acidic water and alkaline water, mixes this, and discharges it, the control means 6
Controls the conductivity of water flowing into the electrolytic cell 2 to be constant. Therefore, the control means 6 calculates the conductivity of water from the electrode voltage and the current, and controls the operation of the supply pump 5 based on the calculation result.
The operation of the supply pump 5 is controlled so that the electric conductivity of the water flowing into the electrolytic cell 2 becomes a set value. (8) Operate switch 1 again to stop water discharge.
When 9 is pressed, the control means 6 switches off the electrode voltage, stops the operation of the supply pump 5, and
The switching valve 11A of the drain drain section 11 is closed. (9) When the electrode voltage is turned off, the electrolytic cell 2 stops electrolysis of the inflowing water. That is, the electrolytic cell 2 will not separate water into acidic water and alkaline water. (10) The control means 6 turns off the electrode voltage and causes the delay timer 13 to start counting. When the delay timer 13 is counting, the open / close valve 12 is held in the open state. When the electrode voltage is off and the on-off valve 12 is open, the electrolyzer 2 and the acidic water and alkaline water in the discharge side pipe are discharged as non-electrolyzed water. (11) The delay timer 13 times up when the set time has elapsed. The set time of the delay timer 13 is set to be equal to or longer than the time for discharging the acidic water and the alkaline water from the electrolytic cell 2 and the discharge side pipe. Therefore, the set time of the delay timer 13 is set to an optimum value in consideration of the capacity of the electrolytic cell 2, the length of the discharge side pipe, the flow rate of inflowing water, and the like. For example, the set time of the delay timer 13 is from several seconds to
Set within a few minutes. (12) When the delay timer 13 times out, the control means 6 closes the open / close valve 12 to stop the inflow of water.

The above-mentioned sterilized water production apparatus is equipped with a delay timer 1.
3 is used to control the inflow time of water after turning off the electrode voltage. In the device of the present invention, instead of the delay timer 13, the flow sensor 14 can delay the closing of the on-off valve 12.

In order to realize this, the control means 6 calculates the signal from the flow rate sensor 14 and closes the open / close valve 12. The control means 6 processes the signal input from the flow rate sensor 14 after turning off the electrode voltage. Further, the control means 6 stores the flow rate until the opening / closing valve 12 is closed by turning off the electrode voltage. After turning off the electrode voltage, the control means 6 processes the signal input from the flow rate sensor 14 to integrate the flow rate. When the cumulative flow rate of water reaches the set value, the on-off valve 12 is closed. The set flow rate of water stored in the control means 6 is a flow rate at which the electrolytic water in the electrolytic cell 2 and the discharge side pipe and alkaline water can be discharged, that is, the electrolytic cell 2
Is set to be equal to or greater than the volume of the discharge passage.

As described above, the sterilizing water production apparatus for turning off the electrode voltage and closing the on-off valve operates as follows. The operations of (1) to (7) are the same as those of the device that closes the opening / closing valve 12 after a predetermined time by the delay timer 13. After that
Performs operations (8) to (12). (8) Operate switch 1 again to stop water discharge.
When 9 is pressed, the control means 6 switches off the electrode voltage, stops the operation of the supply pump 5, and
The switching valve 11A of the drain drain section 11 is closed. (9) When the electrode voltage is turned off, the electrolytic cell 2 stops electrolysis of the inflowing water. That is, the electrolytic cell 2 will not separate water into acidic water and alkaline water. (10) The control means 6 turns off the electrode voltage and starts integration of the flow rate signal of water input from the flow rate sensor 14. When the control means 6 integrates the signals from the flow rate sensor 14, the open / close valve 12 is held in the open state.
With the electrode voltage turned off and the opening / closing valve 12 opened, the acidic water and the alkaline water in the electrolytic cell 2 and the discharge side pipe are discharged as non-electrolyzed water. (11) When the integrated value of the flow rate reaches the set flow rate, the control means 6 closes the open / close valve 12. (12) By the process of the control means 6 closing the on-off valve 12, the on-off valve 12 is opened and the inflow of water is stopped.

[0032]

The sterilized water production apparatus of the present invention electrolyzes strong acidic water and alkaline water in an electrolytic cell to effectively prevent oxidation by acidic water and adhesion of scale by alkaline water. It has the feature of significantly extending durability. This is because the apparatus of the present invention discharges the acidic water and the alkaline water from the electrolytic cell and the discharge passage by flowing water for a fixed time or at a constant flow rate after turning off the electrode voltage. When the apparatus of the present invention is not used, acidic water or alkaline water does not remain in the electrolytic cell or the like. Therefore, when the apparatus is not used, acidic water is prevented from corroding the metal portion, and calcium and the like contained in the alkaline water are prevented from adhering and depositing. The apparatus of the present invention increases the conductivity by adding an electrolytic substance to water to separate it into acidic water and alkaline water. Water with high conductivity has a large electric current between electrodes and becomes strong acidic water and alkaline water. Strong acidic water has a strong oxidizing power, and the corrosive action of metals is great. Further, in strong alkaline water, scales such as calcium tend to adhere.

The sterilized water producing apparatus of the present invention is as described above.
Despite separating the water into strong acidic water and alkaline water, it is possible to effectively prevent the harmful effects of acidic water and alkaline water. This is because acidic water and alkaline water are discharged when not in use. At the time of use, acidic water and alkaline water flow through the electrolytic cell and the discharge passage. The alkaline water that flows through the electrolytic cell or the like when used has the property that scales such as calcium are unlikely to adhere. Alkaline water containing scale has a property of easily adhering when the flow stops and stagnates, but becomes difficult to adhere when flowing.
The apparatus of the present invention does not cause stagnation of alkaline water. This is because alkaline water is discharged when it is not used. Therefore, the apparatus of the present invention has a feature that water can be separated into strong alkaline water to minimize the adhesion of scale. The reason why the amount of scale attached is small is that, in addition to allowing the alkaline water to flow without stagnation, it is separated into alkaline water only when the device is used. The device of the present invention is not used continuously for 24 hours. The more unused time compared to the used time,
Fewer scale deposits. In addition, oxidation and corrosion due to acidic water can be extremely reduced. This is because the acidic water oxidizes the metal only during the use time. Furthermore, when an electrode having a metal laminated thereon is exposed to strong acidic water and alkaline water for a long time, the metal peels off and the life is shortened. However, in the device of the present invention, the electrodes are exposed to strong acidic water and alkaline water only during use. Therefore, there is a feature that the life of the electrode can be remarkably extended regardless of the pH of the acidic water and the alkaline water.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a conventional sterile water manufacturing apparatus.

FIG. 2 is a circuit diagram showing an example of a sterilized water manufacturing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Electrolyte addition means 2 ... Electrolyte tank 3 ... Power supply 4 ... Supply tank 5 ... Supply pump 6 ... Control means 7 ... Mixer 8 ... Electrode 9 ... Partition wall 10 ... Ion water channel 11 ... Drain drain 11A ... Switching valve 12 ... Open / close Valve 13 ... Delay timer 14 ... Flow rate sensor 15 ... Temperature sensor 16 ... Filter 17 ... Mixing section 18 ... Changeover switch 19 ... Operation switch

Claims (2)

(57) [Claims] 1. An electrolytic substance adding means (1) for adding an electrolytic substance to the inflow side, and an electrolytic cell for electrolyzing water to which an electrolytic substance is added by the electrolytic substance adding means (1) with an opposing electrode (8). (2) and
A power source (3) for applying a voltage to the electrode (8) of this electrolytic cell (2),
An on-off valve (12) that allows water to flow into the electrolytic cell (2) and an on-off valve (12)
And a control means (6) for opening and closing the
Water is flowed into the electrolytic cell (2) with the valve (12) open, and the water flowing into the electrolytic cell (2) becomes acidic water and alkaline water with the electrode (8) to which a voltage is applied. In the electrolyzed sterile water production device, the control means (6) has a delay timer (13)
(13) specifies the time until the on-off valve (12) is closed by turning off the electrode (8) voltage, and the on-off valve (12) remains open for a certain period after the electrode (8) voltage is turned off. Held open,
It shall be constructed so that the on-off valve (12) is opened in the state where no voltage is applied to the electrode (8) to flow a predetermined amount of water into the electrolytic cell (2) and discharge acidic water and alkaline water. A sterilized water production device characterized by: 2. An electrolytic substance adding means (1) for adding an electrolytic substance to the inflow side, and an electrolytic cell for electrolyzing the water added with the electrolytic substance by the electrolytic substance adding means (1) with the opposing electrode (8). (2) and
A power source (3) for applying a voltage to the electrode (8) of this electrolytic cell (2),
An on-off valve (12) that allows water to flow into the electrolytic cell (2) and an on-off valve (12)
And a control means (6) for opening and closing the
Water is flowed into the electrolytic cell (2) with the valve (12) open, and the water flowing into the electrolytic cell (2) becomes acidic water and alkaline water with the electrode (8) to which a voltage is applied. In the electrolyzed sterilized water production device, the control means (6) has a flow sensor (14),
(14) identifies the flow rate until the electrode (8) voltage is turned off and the on-off valve (12) is closed, and it is opened and closed until the electrode (8) voltage is turned off and a constant flow rate of water is passed. The valve (12) is held in the open state, the on-off valve (12) is opened with no voltage applied to the electrode (8), and predetermined water is flowed into the electrolytic cell (2) to supply acidic water and alkali. An apparatus for producing sterilized water, which is configured to discharge water.