JP2012196643A - Apparatus for producing hypochlorous acid water or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for producing hypochlorous acid water or the like which can produce hypochlorous acid water or the like that has strong deodorizing power and strong sterilizing power and is used for deodorization, disinfection or the like and is weakly acidic or neutral and which is safe, simple and low cost.SOLUTION: The apparatus for producing hypochlorous acid water or the like by electrolysis of brine has a non-diaphragm electrolysis electrode and a diaphragm electrolysis electrode arranged in an electrolytic cell having the diaphragm. By setting respective electrolysis current values, electrolysis time and a ratio of them or the like by an electric controllers, desired concentration and pH of hypochlorous acid water or the like can be selected. Further pH of an anode side electrolyte is regulated by replacing a part of a cathode side electrolyte in the electrolytic cell or in the electrolytic cell where only diaphragm electrolysis is carried out.

Description

The present invention relates to an aqueous solution (hypochlorous acid or hypochlorous acid) of a weakly acidic to neutral hypochlorous acid or hypochlorite used for sterilization, deodorization and the like. The present invention relates to an apparatus for producing hypochlorous acid water or the like, which generally produces salts such as hypochlorous acid and the like, and hypochlorous acid and the like as an aqueous solution of hypochlorous acid.

Recently, there is no generation of chlorine gas, there is no skin corrosion due to alkali, and strong sterilization and deodorizing power with hypochlorous acid water etc. near neutrality has attracted attention, sterilization of mouth, prevention of bad breath, washing of fingers, etc. Hypochlorous acid water used for sachets is packed in bottles and sold.

Further, conventionally, a device for producing hypochlorous acid water or the like that produces an aqueous solution of hypochlorous acid or hypochlorite by electrolysis of saline is known and widely used (for example, patent documents). 1-3).

Japanese Patent Laid-Open No. 11-128941 JP-A-10-128336 JP 2005-125276 A

However, in the apparatus for generating hypochlorous acid water or the like disclosed in Patent Document 1, a valve for adjusting the flow rate is provided in a water flow path through which acidic water and alkaline water flow, and PH is determined by a flow rate ratio. It is difficult to adjust a minute amount, and the flow rate of the valve changes with time, so it is difficult to stabilize and use PH for a long time. . In the apparatus for generating hypochlorous acid water or the like disclosed in Patent Document 2, it is necessary to add hydrochloric acid to the raw water to be electrolyzed, dilute concentrated hydrochloric acid, which is a deleterious substance, or use dilute hydrochloric acid frequently. It must be handled and the number of users of generators such as hypochlorous acid water was limited. In the apparatus for generating hypochlorous acid water disclosed in Patent Document 3, an aqueous solution such as sodium chloride is used, and two or more kinds of electrolyzed water generated by combining the diaphragm electrolysis method and the non-diaphragm electrolysis method In order to obtain neutral hypochlorous acid water, etc., there are disadvantages that the apparatus becomes large and the cost increases because it has two or more electrolytic cells.

The present invention has been made in order to solve the above-mentioned problems, and allows a user to produce a hypochlorous acid water or the like in a neutral region from a weakly acidic, strong sterilizing power to a neutral region. An object of the present invention is to provide a device for producing hypochlorous acid water or the like.

For this reason, the first invention is a generating device that electrolyzes an electrolytic solution containing chlorine ions to generate hypochlorous acid water and the like, and an electrolytic cell partitioned into a tank A and a tank B by a diaphragm, Electrode 1 and electrode 2 provided in tank A, electrode 3 provided in tank A and electrode 4 provided in tank B across the diaphragm, electrode 1 and electrode 2 as anode cathode 1 and the electrode 2 and the electrode 3 as an anode and the electrode 4 as a cathode, and the electrode 3 and the electrode 4 as an electric control device for causing the DC constant current value I2 to flow.

  In a second aspect of the invention, the ratio between the constant current value I1 and the constant current value I2 is constant current value I2 / constant current value I1 = 0.06 to 10, and the electric control device includes the constant current value I1 and the constant current value I2. It is characterized in that energization time control of the current value I2 is incorporated.

The third invention is characterized in that the electric control device has a function of inverting the polarity of the direct current flowing through the electrode 3 and the electrode 4 every predetermined time.

4th invention has the apparatus which adds salt water to the said B tank, salt water is added to the said B tank every predetermined time or continuously, and it drains from B tank, It is characterized by the above-mentioned.

5th invention is the production | generation apparatus which produces | generates hypochlorous acid water etc. by electrolyzing the electrolysis solution containing a chlorine ion, Comprising: The electrolytic cell divided into A tank and B tank by the diaphragm, The said diaphragm An electrode 3 provided in the A tank and an electrode 4 provided in the B tank, and an electric control device for passing a constant DC current to the electrodes 3 and 4 with the electrode 3 serving as an anode and the electrode 4 serving as a cathode. , A device for adding salt water to the B tank and a drainage device, adding salt water to the B tank every predetermined time or continuously, draining substantially the same amount of the B tank electrolyte, and the amount of electrolysis current Q (coulomb) ), The drainage amount is 0.016 × Q (Coulomb) ml or less.

The sixth invention is characterized in that the diaphragm is a cation exchange membrane.

The seventh invention is characterized in that a device for applying vibration to the diaphragm or the vicinity of the diaphragm is attached.

The present invention is a non-diaphragm electrolysis of an electrolytic solution containing chlorine ions (hereinafter abbreviated as “electrolytic solution”) in a single electrolytic cell. (Hereinafter referred to as “non-diaphragm electrolysis”) and diaphragm electrolysis (electrolysis by an anode and a cathode disposed in each of two tanks partitioned by a diaphragm, which is referred to as “diaphragm electrolysis”. .) Or by performing only electrolysis of the diaphragm, adjusting the electrolysis current value and electrolysis time of the non-diaphragm and the electrolysis current value and electrolysis time of the diaphragm, and by partially replacing the B-cell alkaline electrolyte, Providing a device for generating hypochlorite water, etc. that can set PH and residual chlorine concentration, and that allows users to safely and easily produce hypochlorous acid water in a neutral range from weakly acidic to strong acidity be able to.

In addition, the present invention prevents the bubbles generated by electrolysis from adhering to the diaphragm and impeding energization by swaying the bubbles adhering to the diaphragm and releasing them, thereby preventing the energization from being inhibited, thereby generating a stable amount of generation. An apparatus for producing hypochlorous acid water or the like can be provided.

It is a figure which shows production | generation apparatuses, such as hypochlorous acid water, concerning the 1st Embodiment of this invention. It is a figure of another Example of the electrode part of production | generation apparatuses, such as hypochlorous acid water, concerning the 1st Embodiment of this invention. It is a figure which shows production | generation apparatuses, such as hypochlorous acid water, concerning the 2nd Embodiment of this invention. It is a figure of the electrolytic cell part of production | generation apparatuses, such as hypochlorous acid water, concerning the 3rd Embodiment of this invention. It is a figure which shows the relationship between PH by electrolysis which concerns on the 2nd Embodiment of this invention, and B tank electrolyte solution exchange amount.

Hereinafter, a first embodiment for carrying out the present invention will be described with reference to FIG. First, an outline of the structure will be described. The electrolytic cell AB includes electrolysis electrodes 1, 2, 3, 4, a diaphragm 5 that divides the electrolytic cell AB into two, an alkaline water discharge pipe 6, a hypochlorite water discharge pipe 7, an alkaline water discharge pipe 8, Electrolyte water level sensors 121 and 122 are attached. Further, an electric control device C for controlling energization to the electrodes, electrolyte supply pipes 131 and 132 for supplying the electrolyte to the water tank, and an electrolyte tank 15 are provided.

Next, details of the structure will be described. The electrolytic cell AB that performs electrolysis is divided into a tank A and a tank B by a diaphragm 5. By electrolysis, hypochlorous acid water or the like is generated in the A tank, and the water in the B tank becomes alkaline. Electrode 1 and electrode 2 are provided opposite to each other in tank A, and electrode 3 is provided in tank A and electrode 4 is provided in tank B across the diaphragm. Here, confronting means that the liquid resistance is not increased, and it is not necessary to face each other strictly. The polarity of the electrode 1 and the electrode 2 can be either yin or yang. However, since the electrode 3 is an anode, the electrode 2 near the diaphragm 5 is preferably an anode. In FIG. 1, the electrode 2 on the side close to the diaphragm among the Yin and Yang electrodes in the tank A is used as the anode, the back surface of the electrode 2 is used as the electrode 3, and the cathode is connected to the electrode 4 in the tank B in close proximity with the diaphragm 5 interposed therebetween. The two electrodes, the electrode 2 and the electrode 3, are provided by one electrode, but the electrode 2 and the electrode 3 may be separately provided as shown in FIG.

Since the anodes such as the electrodes 2 and 3 are required to have durability even in a strong oxidizing environment, the titanium base material is used after being coated with a platinum group oxide such as platinum or iridium oxide. When the electrode 1 is used as an anode, the titanium base material is coated with a platinum group oxide such as platinum or iridium oxide. When the electrode 1 is used as a cathode, the same material as the anode may be used, but a titanium material may be used. . When dissolving electrolytes such as salt, water that does not contain scale components such as calcium ions and magnesium ions, such as reverse osmosis membrane passing water and ion exchange resin passing water, is used for reverse electrolysis to remove the scale. Is unnecessary, the material of the electrodes 1 and 4 may be a titanium material. When the water to be used contains a scale component, the electrode 4 is made of a durable material such as platinum or a platinum group oxide covering material that is the same as the anode in order to reverse the polarity of the direct current.

The diaphragm 5 is made of a material that can perform ion migration and the liquid cannot easily move, such as an unglazed plate, a nonwoven fabric, and an ion exchange membrane. Nonwoven fabrics and ion exchange membranes are preferably made of fluororesin from the viewpoint of durability. The nonwoven fabric may be made of other materials that can withstand hypochlorous acid water, such as PE, PP, and PET. The water-repellent material is used after wet treatment. The diaphragm 5 is preferably formed using a thin reinforcing reinforcement member 51 in order to reduce the electrolysis voltage, but the support member 51 may be omitted.

An electrolytic solution containing chlorine ions such as salt is placed in the A tank and the B tank, and a direct current is passed through the electrodes 1 and 2 to perform electrolysis. Further, a direct current is passed through the electrodes 3 and 4 to perform electrolysis. When the diaphragm 5 is a cation exchange membrane, the passage of OH ⁻ ions generated in the B tank is prevented, and the A tank tends to be more acidic.

Hydrogen gas and oxygen gas are generated by electrolysis, and bubbles are attached to the diaphragm 5 to inhibit energization. Therefore, the reinforcing support member 51 of the diaphragm 5 is provided with a vibration device 16 for detaching the bubbles from the diaphragm 5. ing. In the present embodiment, the vibration device for detaching the bubbles uses an electromagnet to hit the reinforcing support member 51. However, the vibrating device may be repelled like a music box. It may be struck, and the diaphragm 5 and the vicinity thereof may be shaken with a water flow or an air flow.

The electrical control device C is provided with a power outlet, an electrode, a vibration device, an on-off valve, a wiring connecting to an electrical component such as a water level sensor, a current value control button, a time control button, and various displays. In addition, an electric circuit for controlling the electrolysis current value, electrolysis time, and other electrical components is provided. The setting of the diaphragm electrolysis current value, the diaphragm electrolysis current value, and the current value ratio is set by the diaphragm electrolysis current value and the diaphragm electrolysis current value in this embodiment, but the ratio of the diaphragm electrolysis current value and the current value ratio is set. It is good also as a structure set with another combination, such as setting by.

Electrolyte water level sensors 121 and 122 attached to the A and B tanks to control the amount of liquid entering the electrolyzer use a corrosion-resistant metal such as titanium. Thus, it is determined by the electric control device C that the electrolyte water level is at the predetermined water level. In this example, an electrode type is used for the electrolyte water level sensor, but a float type, an ultrasonic type, or other methods may be used. In this embodiment, the water level sensor is provided. However, when the electrolyte flow rate can be controlled by a metering pump or the like, the water level sensor may not be provided.

Electrolyte supply pipes 131 and 132 and an electrolyte tank 15 are provided for supplying electrolyte to the A and B tanks, and electromagnetic valves 141 and 142 are provided in the electrolyte supply pipes 131 and 132, respectively. The electric control device C is configured to open and close the electromagnetic valves 141 and 142 in response to signals from the electrolyte water level sensors 121 and 122. In this example, an electromagnetic valve is used, but a pump, a metering pump, or other method may be used. Further, the electrolytic solution may be a method of adding a small amount of concentrated salt water with a metering pump and adding purified water.

The tank A is provided with a discharge pipe 7 for hypochlorous acid water, the tank B is provided with an alkaline water discharge pipe 8, and electromagnetic valves 9 and 10 are respectively attached to the tank B and are opened and closed according to instructions from the electric control device C. It has a structure. In this embodiment, an electromagnetic valve is used as the valve, but it may be opened and closed by other methods such as opening and closing by a motor, opening and closing by a lever, and the present invention is not limited thereby. Further, it is not always necessary to provide the electrolyte water level sensors 121, 122, the electrolyte supply pipes 131, 132, the electrolyte tank 15, the hypochlorous acid water discharge pipe 7, and the alkaline water discharge pipe 8, and supply them manually. Even if the electrolytic solution is supplied and discharged by other methods such as discharging, the present invention is not spared. Further, in order to prevent an excessive increase in the alkali concentration of the electrolyte solution in the B tank and to control the electrolyte solution PH in the A tank, a part of the electrolyte solution in the B tank is replaced. A drainage device is provided for this discharge. The drainage device may be any structure that can drain water, and in this embodiment, an alkaline water discharge pipe 6 is provided. In addition, since the hydroxide ion density | concentration does not become high when B tank capacity | capacitance is large compared with the amount of electrolysis electric current, the alkaline water drain pipe 6 does not need to be.

Next, the operation will be described with reference to FIG. The electromagnetic valves 141 and 142 are opened, and the electrolytic solution is supplied from the electrolytic solution tank 15 to the electrolytic cell AB through the electrolytic solution supply pipes 131 and 132. For the electrolytic solution, a chloride salt such as sodium chloride or potassium chloride is dissolved in water with few impurities such as purified water such as tap water, purified water, and reverse osmosis membrane passing water. When the electrolyte reaches a predetermined water level, the solenoid valves 141 and 142 are closed by the signals of the electrolyte water level sensors 121 and 122, and the supply of the electrolyte is stopped. In response to an instruction from the electric control device C, a predetermined current value I1 flows through the electrodes 1 and 2, and a predetermined current value I2 flows through the electrodes 3 and 4, so that electrolysis of the electrolyte starts. If the electrolysis is continued, part of oxygen gas and hydrogen gas generated from the electrodes adheres to the diaphragm 5, so that the vibration device 16 is energized to vibrate and desorb bubbles. The necessary energization interval to the vibration device 16 depends on the electrolysis current, but there is almost no problem if bubbles are detached at intervals of about 10 minutes. In order to prevent the pH of the electrolyte solution in the A tank from being affected by the change in the hydroxide ion concentration in the electrolyte solution in the B tank during electrolysis, a predetermined amount of the electrolyte solution is supplied by opening the electromagnetic valve 141 at predetermined time intervals. In addition, the same amount is discharged from the alkaline water discharge pipe 6. After the electrolytic solution is electrolyzed for a predetermined time, the electrolysis is stopped by an instruction from the electric control device C. After the electrolysis is completed, the hypochlorous acid water in the tank A is opened by the electromagnetic valve 9 and discharged through the discharge pipe 7 such as hypochlorous acid water and stored in a container or used directly. The alkaline water in the B tank is opened by the electromagnetic valve 10 and discharged through the water discharge pipe 8, and is used as a fat and oil stain cleaner or discarded. Although the batch method has been described, the present invention is not limited to the batch method, and may be a method of supplying and discharging in small increments or continuous supply and discharge. Here, the constant current value I1 and the constant current value I2 are average current values within the required electrolysis time, and are preferably constant current values within the required electrolysis time, but within a shorter time than the required electrolysis time. Even if there is a change in the current value, the present invention is not spared.

Next, a second embodiment for carrying out the present invention will be described with reference to FIG. In this case, a different part from 1st Embodiment is demonstrated especially. In this embodiment, the structure which remove | excluded the electrode 1 of A tank among 1st Embodiment is carried out. Since the electrolysis using the electrode 1 and the electrode 2 is eliminated, an electric circuit necessary for the electrode 1 is unnecessary and the cost can be reduced. On the other hand, the pH adjustment range of hypochlorous acid water or the like of the electrolyte solution in the tank A is suppressed to about 5 to 7, and the range for selecting the concentration and PH of hypochlorous acid water or the like is narrowed. In this embodiment, the hydroxide ion concentration of the electrolyte solution in the B tank is adjusted by replacing the electrolyte solution in the B tank, and thus the pH of the electrolyte solution in the A tank is adjusted. Is essential, and it is advantageous that the B tank capacity is small. Replacement of the electrolytic solution in the B tank is performed with an amount of water that does not greatly change the hydroxide ion concentration of the electrolytic solution in the B tank. Although it is not necessary for the amount of water supplied and discharged once to be the same, in order to avoid changes in the hydroxide ion concentration and the amount of the electrolyte in the tank B, the amounts are substantially the same, and more preferably the same.

Next, a third embodiment for carrying out the present invention will be described with reference to FIG. In this case, a different part from 1st Embodiment is demonstrated especially. In the present embodiment, the first embodiment is structured horizontally. In this embodiment, it can be used as a batch system, but is suitable for continuously producing hypochlorous acid water or the like. Oxygen gas and hydrogen gas are generated by electrolysis. If the amount of current is the same, the amount of gas generated increases as the salt concentration decreases. However, if the amount of gas generated is large, the electrode surface is placed upright. It is advisable to provide an exhaust gas outlet by letting bubbles escape.

Next, properties such as hypochlorous acid water produced using the production apparatus of the present invention are shown together with specifications of the production apparatus and electrolysis conditions. The tap water used here is clean water (tap water) in Kumagaya City, Saitama Prefecture. The model name AQ-102 manufactured by Shibata Kagaku Co., Ltd. was used for residual chlorine concentration measurement, and the model name B-211 manufactured by Horiba Seisakusho was used for PH measurement. As the PH standard solution, a neutral phosphate standard solution (PH 6.86) manufactured by Toa Decay Co., Ltd. was used. Residual chlorine is the sum of chlorine, hypochlorous acid and sodium hypochlorite converted to chlorine, but the residual chlorine measurement is hypochlorous acid because the ratio of chlorine is very low from weakly acidic to neutral. And the sum of sodium hypochlorite. The electrolytic electrode used in this example is a titanium base material coated with iridium oxide. Electrode area of electrode 1 and electrode 2 is 2 cm ² , surface interval is 10 mm, electrode 3 and electrode 4 is electrolysis area 2 cm ² , surface interval is 20 mm, and the temperature of the electrolyte is 8 ± 2 ° C.

Table 1 shows changes in PH of the A-cell electrolyte when the diaphragm electrolysis current value was 350 mA and the diaphragm electrolysis current value was changed. Salt concentration is 10g / l, RO water (water that has passed through reverse osmosis membrane) is used for salt dissolution, Liquid volume: 1000ml for both tank A and tank B, current value ratio is diaphragm membrane current value 350mA The value divided by, 0H to 10H is the electrolysis time, and the blank is not measured. Current value ratio I2 / I1 between the diaphragm electrolysis current value (current value I1 of electrolysis by electrodes 1 and 2; the same applies hereinafter) and the diaphragm electrolysis current value (current value I2 of electrolysis by electrodes 3 and 4; the same applies hereinafter) By changing the pH of the A tank electrolyte, it can be changed in the range of about 3.5 to 8.3. In addition, since the amount of hypochlorous acid water and the like generated increases or decreases in proportion to the total amount of electrolysis current, the pH 5.8 to 8.3 can be adjusted by adjusting the diaphragm electrolysis current value and the current value ratio I2 / I1. In the range, the concentration of hypochlorous acid water and the like and the pH can be varied almost independently. Furthermore, it can set more accurately in the range of PH 6.2 to 7.6.

Table 2 shows the change in pH of the A-cell electrolyte when the electrolysis time of the diaphragm electrolysis and the diaphragm electrolysis is changed and the current value ratio I2 / I1 is greatly changed. Salt concentration is 10 g / l, RO water (water that has passed through reverse osmosis membrane) is used for salt dissolution, liquid volume: 1000 ml for both tank A and tank A, current value ratio is the diaphragm electrolysis current value as the diaphragm electrolysis current value Divided values, 0H to 10H are electrolysis time, non-diaphragm electrolysis time is continuous 10 hours,-column is a time zone when diaphragm electrolysis is not performed,-numerical value (example: -10.7) is just before starting electrolysis of diaphragm The pH of the electrolyte in tank A, * 1, was 9 hours and 30 minutes after the diaphragm electrolysis, and the diaphragm electrolysis was performed for 30 minutes together with the diaphragm electrolysis. As can be seen from Table 2, by controlling the current value ratio, each electrolysis time, and the current value, the pH of the A tank electrolyte can be controlled from weakly acidic to near neutral.

Table 3 shows the relationship between the diaphragm electrolysis current value and the scale deposited on the electrolytic surface of the electrode 4 when the polarity of the direct current flowing through the electrodes 3 and 4 is reversed every predetermined time and electrolysis is continued. Shown in Salt concentration 10g / l, Kumagaya City tap water is used for salt dissolution, liquid volume: 1000ml for both tank A and tank B, diaphragm electrolysis current value 350mA, current ratio is the diaphragm electrolysis current value as the diaphragm electrolysis current value Divided values, 0H to 10H are electrolysis time, electrolysis time is continuous 10 hours for both diaphragm electrolysis and diaphragm electrolysis. The diaphragm electrolysis was repeated for 60 minutes using the electrode 3 as the anode (positive electrolysis) and 6 minutes using the cathode (reverse electrolysis). The scale which deposits on the electrolysis surface of the electrode 4 in the range of the diaphragm electrolysis electric current value 50mA-200mA was not recognized.

When the polarity of the direct current flowing through the electrode 3 and the electrode 4 is reversed every predetermined time and electrolysis is continued, the relationship between the time when the electrode 4 becomes an anode and the scale deposited on the electrolytic surface of the electrode 4 Table 4 shows. Salt concentration 10g / l, use Kumagaya City tap water for salt dissolution, liquid volume: 1000ml for both A and B tanks, non-diaphragm electrolysis current value 350mA, diaphragm electrolysis current value 150mA, 0H-10H are electrolysis time, electrolysis time Is continuous 10 hours for both diaphragm electrolysis and diaphragm electrolysis. In the diaphragm electrolysis, electrode 3 was used as an anode (positive electrolysis) for 60 minutes, and cathode (reverse electrolysis) was used for x minutes, where x was 1 to 60 minutes. No scale was observed that deposited on the electrolytic surface of the electrode 4 in the range of reverse electrolysis time of 1 to 60 minutes.

Table 5 shows the relationship between the amount of salt water to be added and the pH of the electrolyte solution in the A tank when a predetermined amount of salt water is added to the electrolyte solution in the B tank during the electrolysis and the same amount is drained. Electrolyte solution: salt concentration 10 g / l, use Kumagaya City tap water for salt dissolution, liquid volume: A tank 1000 ml, B tank 370 ml, diaphragm electrolysis current value 350 mA, diaphragm electrolysis current value 250 mA, electrolysis time is diaphragm Continuous 10 hours for both electrolysis and diaphragm electrolysis. The diaphragm electrolysis was repeated for 60 minutes using the electrode 3 as the anode and 4.2 minutes as the cathode. The salt water to add is the same as the electrolyte. Due to the addition of salt water to the B tank and the same amount of drainage (referred to as the B tank replacement liquid amount, hereinafter the same), the electrolytic solution PH of the A tank changes to a lower one as the B tank replacement liquid amount increases. .

When there is no diaphragm electrolysis and the amount of liquid in tank A and tank B is changed, a predetermined amount of salt water is added to the electrolyte in tank B during electrolysis every 60 minutes, and the same amount is drained. Table 6 shows the relationship between the amount of salt water to be added and the pH of the electrolytic solution in tank A. Electrolyte solution: Salt concentration of 10 g / l, Kumagaya city tap water was used for salt dissolution, Liquid volume: A tank 850 ml, B tank 85 ml, diaphragm electrolysis current value 350 mA, continuous 10 hours. The diaphragm electrolysis was repeated for 60 minutes using the electrode 3 as the anode and 4.2 minutes as the cathode. The salt water to be added is the same as the electrolyte, and the blank is not measured. Due to the addition of salt water to the B tank and the same amount of drainage, the electrolytic solution PH in the A tank changes to the lower side as the amount of the B tank replacement liquid increases. Salt concentration 50 g / l (diaphragm electrolysis current value 350 mA), salt concentration 10 g / l (diaphragm electrolysis current value 350 mA), salt concentration 5 g / l (diaphragm electrolysis current value 300 mA □), salt concentration FIG. 5 shows the relationship between the pH of 2 g / l (diaphragm electrolysis current value 150 mA × mark) and the B tank replacement liquid amount (all converted to electrolysis current amount 1260 coulombs). As for the condition where PH is weakly acidic to near neutral, the amount of drainage of B tank electrolyte is 20 ml or less, and 0.016 × electrolytic current amount (coulomb) ml or less is suitable. (0.35A × 3600Sec = 1260 coulomb, 20ml / 1260 coulomb ≈ 0.016ml / coulomb is obtained.) Also, a salt concentration of 5g / l or more is required for electrolysis at a low voltage and for shortening the time to reach a predetermined pH. Is more suitable. Although salt is used as the salt here, other chloride salts such as potassium chloride may be used. Although the electrolytic solution is used here as the salt water used as the B tank replacement solution, it is not necessarily the same as the electrolytic solution, and any salt water having conductivity that can usually ensure an electrolytic pressure may be used.

The apparatus for producing hypochlorous acid water or the like of the present invention does not use deleterious substances such as hydrochloric acid, does not generate hydrochloric acid gas, and can be reduced in size and cost. Suitable for kitchens and nursing care facilities that require cooking.

AB Electrolyzer A A Part of an electrolytic cell separated by a diaphragm A Tank B A part of an electrolytic cell separated by a diaphragm B Tank C Electric control device 1, 2, 3, 4 Electrode 5 Diaphragm 51 Support material 6 Alkaline water discharge Water pipe 7 Water discharge pipe 8 such as hypochlorous acid water Alkaline water water discharge pipe 9, 10 Electromagnetic valve 111, 112 Water level sensor wiring 121, 122 Electrolyte water level sensor 131, 132 Electrolyte supply pipe 141, 142 Electromagnetic valve 15 Electrolyte tank 16 Vibration device

Claims (7)

  An apparatus for electrolyzing an electrolyzed liquid containing chlorine ions to produce hypochlorous acid water, etc., comprising an electrolytic cell divided into a tank A and a tank B by a diaphragm, and an electrode provided in the tank A 1 and the electrode 2, the electrode 3 provided in the tank A and the electrode 4 provided in the tank B across the diaphragm, the electrode 1 and the electrode 2 as the anode cathode, and the electrode 1 and the electrode 2 with a direct current. An apparatus for producing hypochlorous acid water or the like, comprising: an electric control device for passing a DC constant current value I2 to the electrode 3 and the electrode 4 using the current value I1, the electrode 3 as an anode and the electrode 4 as a cathode.   The ratio between the constant current value I1 and the constant current value I2 is constant current value I2 / constant current value I1 = 0.06 to 10, and the energization time of the constant current value I1 and the constant current value I2 is supplied to the electric control device. 2. The apparatus for producing hypochlorous acid water or the like according to claim 1, wherein control is incorporated. 3. The hypochlorous acid water or the like according to claim 1, wherein the electric control device has a function of inverting the polarity of a direct current flowing through the electrode 3 and the electrode 4 every predetermined time. Generator. 4. The apparatus according to claim 1, further comprising a device for adding salt water to the B tank, adding salt water to the B tank every predetermined time or continuously, and discharging water from the B tank. Equipment for producing hypochlorous acid water. A generator for electrolyzing an electrolytic solution containing chlorine ions to produce hypochlorous acid water, etc., comprising an electrolytic cell partitioned into a tank A and a tank B by a diaphragm, and the inside of the tank A across the diaphragm The electrode 3 provided in the B tank, the electrode 4 provided in the B tank, the electric control device for passing a constant DC current to the electrode 3 and the electrode 4 using the electrode 3 as the anode and the electrode 4 as the cathode, and the salt water in the B tank. And a drainage device, adding salt water to the tank B every predetermined time or continuously, draining the same amount of the tank B electrolyte, and the amount of drainage with respect to the amount of electrolysis current Q (coulomb). An apparatus for producing hypochlorous acid water or the like characterized by being 0.016 × Q (coulomb) ml or less. The apparatus for producing hypochlorous acid water or the like according to any one of claims 1 to 5, wherein the diaphragm is a cation exchange membrane. The apparatus for generating hypochlorous acid water or the like according to any one of claims 1 to 6, further comprising a device for applying vibration to the diaphragm or the vicinity of the diaphragm.

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