JP2018051428A - Apparatus for producing electrolyzed water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify an apparatus with retained usability thereof.SOLUTION: An apparatus for producing electrolyzed water in accordance with this embodiment includes an electrolytic cell, a diaphragm for partitioning the electrolytic cell into a first electrode chamber in which a first electrode is at least disposed and a second electrode chamber in which a second electrode different from the first electrode in polarity is disposed, a power supply for applying a voltage between the first electrode and the second electrode, a feeding system for feeding water into the first electrode chamber, a water discharging system for discharging the water from the first electrode chamber to reserving means, and control means for activating the feeding system, the power supply and the water discharging system alternately to alternate production and discharge of electrolyzed water continuously.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electrolyzed water production apparatus.

  When electricity is supplied to water containing chlorine ions, acidic water is generated on the anode side and alkaline water is generated on the cathode side. The acidic water produced on the anode side contains hypochlorous acid and has a bactericidal action. For this reason, acidic water is used for disinfection and sterilization. In recent years, use as a deodorizing means has been studied.

  As an electrolyzed water production apparatus that electrolyzes water containing chlorine ions to produce electrolyzed water, a water-flow type electrolyzed water production apparatus that produces electrolyzed water while continuously passing water to the electrolyzer, A storage-type electrolyzed water production apparatus that generates a predetermined amount of electrolyzed water by electrolyzing water stored in a container has been put into practical use.

  The water-flow type electrolyzed water production apparatus can continuously supply electrolyzed water as the apparatus is activated. However, in the electrolyzed water production apparatus, hypochlorous acid contained in the electrolyzed water also when water pressure fluctuations occur in the water supply pipe line to the electrolysis tank or back pressure fluctuations occur in the drain pipe line from the electrolysis tank. It is necessary to maintain the concentration in a certain range. Therefore, a mechanism for maintaining the amount of water supplied to the electrolytic cell through the water supply pipe and the amount of water discharged from the electrolytic tank through the drain pipe is required. Therefore, in the water flow type electrolyzed water production apparatus, it is necessary to install a control valve, a sensor, and the like for controlling the water flow rate in the water flow system of the electrolyzed water rich in corrosiveness. Moreover, the algorithm for controlling these control valves may become complicated depending on the scale and application of the water flow device. In such a case, it is conceivable that the configuration of the apparatus becomes complicated or the apparatus becomes large.

  On the other hand, the storage-type electrolyzed water production apparatus generates electrolyzed water by electrolyzing the water stored in the storage container. Therefore, when electrolyzing, it is necessary to supply and drain water to the electrolyzer. Absent. Therefore, unlike the water-flow type electrolyzed water production apparatus, the storage-type electrolyzed water production apparatus does not require a control valve or a sensor for performing water flow control of the electrolytic cell. Therefore, the apparatus configuration can be simplified, and as a result, the apparatus can be reduced in size and cost.

  However, the storage-type electrolyzed water production apparatus cannot obtain electrolyzed water until a predetermined time elapses from when the apparatus is started to when electrolysis is completed. For this reason, when the produced electrolyzed water is consumed, time for performing electrolysis again is required. Therefore, the storage-type electrolyzed water production apparatus is inferior in usability as compared with the water-through type electrolyzed water production apparatus depending on applications.

JP2012-11332A Japanese Patent No. 5859177

  The present invention has been made under the above circumstances, and an object thereof is to simplify the apparatus while maintaining the usability of the apparatus.

  In order to solve the above problems, an electrolyzed water production apparatus according to the present embodiment includes an electrolyzer, an electrolyzer, a first electrode chamber in which at least a first electrode is disposed, and a second electrode having a different polarity. A diaphragm that is divided into a second electrode chamber in which the electrodes are disposed, a power source that applies a voltage to the first electrode and the second electrode, a supply system that supplies water to the first electrode chamber, and a storage from the first electrode chamber A drainage system for draining water to the means, and a control means for alternately driving the supply system, the power source, and the drainage system to continuously generate the electrolyzed water and drain the electrolyzed water.

It is a figure which shows schematic structure of the electrolyzed water manufacturing apparatus which concerns on 1st Embodiment. It is a flowchart which shows a series of processes which a control apparatus performs. It is a figure which shows schematic structure of the electrolyzed water manufacturing apparatus which concerns on 2nd Embodiment. It is a flowchart which shows a series of processes which a control apparatus performs. It is a figure which shows schematic structure of the electrolyzed water manufacturing apparatus which concerns on 3rd Embodiment. It is a figure which shows schematic structure of the electrolyzed water manufacturing apparatus which concerns on 4th Embodiment. It is a figure which shows schematic structure of the electrolyzed water manufacturing apparatus which concerns on 5th Embodiment. It is a figure for demonstrating the electrolytic cell which concerns on a modification.

<< First Embodiment >>
Hereinafter, a first embodiment will be described with reference to the drawings. FIG. 1 is a diagram illustrating a schematic configuration of an electrolyzed water production apparatus 10 according to the present embodiment. The electrolyzed water production apparatus 10 is an apparatus that generates acidic water containing acidic hypochlorous acid by electrolyzing salt water.

  As shown in FIG. 1, the electrolyzed water production apparatus 10 includes an electrolyzer 11, a storage tank 12, a DC power supply 31, and a control device 50.

  The electrolytic cell 11 is a container made of resin, stainless steel, or the like. The electrolytic cell 11 is composed of, for example, a rectangular parallelepiped casing 11a and a casing 11b disposed inside the casing 11a. The internal space of the casing 11 a and the internal space of the casing 11 b communicate with each other through the ion exchange membrane 21. In the electrolytic cell 11, by combining the casing 11a and the casing 11b, the internal space of the casing 11b becomes the cathode chamber S2, and the remaining internal space of the casing 11a becomes the anode chamber S1.

  The anode chamber S <b> 1 is connected to a commercial water supply facility via a conduit 110 and is connected to the storage tank 12 via a conduit 111. Moreover, the electrode 23 for producing | generating acidic water is arrange | positioned inside the anode chamber S1.

  Tap water is supplied from the water supply facility to the anode chamber S1. As the tap water supplied to the anode chamber S1, it is preferable to use soft water with few alkali components from the viewpoint of preventing the deposition of scales mainly composed of calcium carbonate. This type of soft water can be generated, for example, by using a water softener using an ion exchange resin. The tap water supplied from the water supply facility to the anode chamber S1 is controlled by the electromagnetic valve V1. This solenoid valve V1 is a normally closed solenoid valve, for example. When the solenoid valve V1 is ON, tap water is supplied to the anode chamber S1. When the solenoid valve V1 is off, the supply of tap water to the anode chamber S1 is stopped.

  The water level in the anode chamber S1 is detected by a water level sensor W1 provided in the casing 11a. As the water level sensor W1, a capacitance type water level sensor, a conductivity type water level sensor, a float type water level sensor, or the like can be used. The water level sensor W1 has, for example, a contact that is turned on when the water level in the anode chamber S1 reaches a rated water level suitable for electrolysis.

The cathode chamber S2 is a space surrounded by the casing 11b, and an electrode 24 is disposed therein. The cathode chamber S2 is filled with salt water. As salt water, for example, salt water generated by adding sodium chloride (NaCl) as an electrolyte to water (H ₂ O), or by adding salt such as potassium chloride (KCl) containing chlorine to water. The resulting brine is used. The concentration of the salt water is not particularly limited, but considering the stability during electrolysis, it is preferable that the concentration is somewhat high. Of these, saturated sodium chloride is preferably used as the salt water.

Ion exchange membrane 21 is, for example, chlorine ion Cl ^- is an anion exchange membrane having a property of passing anions such. As the anion exchange membrane, Neoceptor (registered trademark) manufactured by Astom, Selemion (registered trademark) manufactured by AGC Engineering, or the like can be used.

  Further, a porous membrane can be used in place of the ion exchange membrane 21. As the porous membrane, it is possible to use an organic microporous membrane obtained by forming micropores on a chemically stable organic polymer material thin film such as polyolefin or a fluorine compound, or an inorganic oxide porous membrane. it can. Various inorganic oxides can be used. For example, a material obtained by applying a fine powder of titanium oxide, silicon oxide, aluminum oxide, niobium oxide, tantalum oxide, nickel oxide or the like to the support can be used. In particular, it is preferable to use titanium oxide, silicon oxide, or aluminum oxide. As other porous membranes, a porous polymer having a halogenated polymer such as chlorine or fluorine can be used.

  The electrode 23 serving as an anode is made of, for example, titanium (Ti), stainless steel (SUS), chromium (Cr), nickel (Ni), aluminum (Al), an alloy thereof, or a clad material. The electrode 23 is shaped into a rectangular plate, and a plurality of through holes are formed in order to circulate raw water and increase the surface area. The through-hole may be a straight hole having a constant opening diameter, or may be shaped into a tapered shape with different diameters on one surface of the electrode 23 and the other surface, so that the inner wall surface is curved. It may be shaped.

  The shape of the through hole can be any shape such as a rectangle, a circle, and an ellipse. Further, the through holes may be regularly arranged in a matrix shape or a honeycomb shape, or may be irregularly arranged.

  For example, a noble metal catalyst such as platinum (Pt) or an oxide catalyst such as iridium oxide is attached to the surface of the electrode 23.

  The electrode 24 serving as the cathode is configured in the same manner as the electrode 23. In the electrode 24, a metal having corrosion resistance such as titanium or stainless steel can be used as it is without attaching a catalyst.

  The DC power source 31 applies a voltage to the electrode 23 and the electrode 24 based on an instruction from the control device 50. In the electrolyzed water production apparatus 10, a voltage is applied to each of the electrodes 23 and 24 so that the electrode 23 becomes an anode and the electrode 24 becomes a cathode.

  The storage tank 12 is a tank made of a metal such as resin or stainless steel, for example. The volume of the storage tank 12 is preferably about 5 times or more than the volume of the anode chamber S1. The storage tank 12 is installed at a position lower than the electrolytic cell 11, and is connected to the anode chamber S <b> 1 of the electrolytic cell 11 via a pipe line 111. In addition, the storage tank 12 is connected to an external device via a pipe line 112. The water level of the storage tank 12 is detected by, for example, a water level sensor W2. As the water level sensor W2, a capacitance type water level sensor, a conductivity type water level sensor, a float type water level sensor, or the like can be used. The water level sensor W2 has, for example, a contact that is turned on when the storage tank 12 is full.

  As described above, the volume VOL1 [L] of the storage tank 12 is preferably about five times or more than the volume VOL2 [L] of the anode chamber S1 (VOL1 ≧ 5 × VOL2). In the electrolyzed water production apparatus 10, the amount of water when the storage tank 12 is full is set to 4 × VOL2 [L] or less. Thereby, even when the electrolyzed water in the anode chamber S1 is being transferred to the storage tank 12, even if the water level sensor W2 is turned on, the transfer of the electrolyzed water can be continued until the anode chamber S1 becomes empty. it can.

  The volume of the cathode chamber S2 containing salt water is made smaller than the volume VOL2 of the anode chamber S1, and the salt water is replaced every time the cycle of generating electrolyzed water in the anode chamber S1 is repeated a plurality of times. The repetitive cycle after the replacement of the salt water until the next replacement of the salt water is determined by the volume of the anode chamber S1, the volume of the cathode chamber S2, the concentration of the generated electrolytic water, etc., but should be about 1 to 20 cycles. Is preferred.

  Specifically, if the anode chamber S1 is 1L and the cathode chamber S2 is 0.02L, it takes 20 cycles until the salt water concentration decreases and the characteristics are affected, until the salt water pH exceeds the deleterious substance range. Took 10 cycles. In order to generate electrolyzed water, the amount of electrolyte lost through the diaphragm is very small. For this reason, if salt water is isolated through a diaphragm, the volume of the cathode chamber S2 can be reduced to about 1/10 to 1/100 of the volume of the anode chamber S2. In addition, by generating a plurality of cycles of electrolyzed water in the anode chamber S1, the salt water is exchanged, thereby efficiently consuming the salt water and reducing wasted time and power.

  Further, if the volume of the anode chamber S2 is too large, there is a problem that the electrolyzed water is not mixed uniformly even by drainage. In the experiment, if the volume VOL2 of the anode chamber S2 is 5 L or less, the concentration of the electrolyzed water is made uniform by mixing with drainage. Above that, the concentration of the electrolyzed water is considerably different at the beginning and end of the drainage by the drainage. Confirmed that will come out. On the other hand, if the volume VOL2 of the anode chamber S2 is too small, the time ratio of water supply or drainage increases, and the generation capacity decreases. The volume VOL2 of the anode chamber S2 is desirably in the range of 0.5 to 5L.

  One end of the pipe line 111 is connected to the bottom of the casing 11 a that constitutes the anode chamber S <b> 1 of the electrolytic cell 11. The other end is connected to the upper part of the storage tank 12. The electrolyzed water generated in the anode chamber S1 is transferred to the storage tank 12 through the pipe 111 and stored. In addition, the electrolyzed water stored in the storage tank 12 is supplied to an external device or the like serving as a use point of the electrolyzed water via the pipe line 112.

  Solenoid valves V2 and V3 are provided in the pipelines 111 and 112, respectively. The solenoid valve V2 is a normally closed solenoid valve, for example. The electrolyzed water generated in the anode chamber S1 is transferred to the storage tank 12 by gravity when the electromagnetic valve V2 is on, and the transfer to the storage tank 12 is stopped when the electromagnetic valve V2 is off. The electromagnetic valve V3 is an electromagnetic valve controlled by the user of the electrolyzed water production apparatus 10 or an external device. The electrolyzed water in the storage tank 12 is supplied to the use point when the electromagnetic valve V3 is open. When the solenoid valve V3 is closed, supply to the use point is stopped.

  The control device 50 is a computer having a central processing unit (CPU), a main storage unit that is a work area of the CPU, an auxiliary storage unit that stores programs and various parameters, and the like. The control device 50 drives the DC power supply 31 and the electromagnetic valves V1 and V2 described above based on a program stored in the auxiliary storage.

  Next, operation | movement of the electrolyzed water manufacturing apparatus 10 comprised as mentioned above is demonstrated. FIG. 2 is a flowchart showing a series of processing executed by the control device 50. The electrolyzed water production apparatus 10 operates when the control device 50 performs a process according to the flowchart of FIG. Hereinafter, the process executed by the control device 50 will be described with reference to FIG. The series of processes shown in the flowchart of FIG. 2 is started, for example, when the control device 50 receives a start command from the user.

  As a premise for explanation, it is assumed that the solenoid valves V1 to V3 are closed (off) and the DC power supply 31 is stopped. Further, both the anode chamber S1 and the storage tank 12 are assumed to be empty, and the cathode chamber S2 is preliminarily filled with salt water automatically or by the user.

  First, the control device 50 determines whether or not the water level sensor W2 is on (step S101). The water level sensor W2 is turned on when the storage tank 12 is full, and the water level sensor W2 is turned off when the storage tank 12 is not full. When it is determined that the water level sensor W2 is on (step S101: Yes), the control device 50 waits for the electrolytic water in the storage tank 12 to be drained by the user or an external device.

  On the other hand, when it is determined that the water level sensor W2 is off (step S101: No), the control device 50 turns on the electromagnetic valve V1 (step S102). Thereby, tap water is supplied to the anode chamber S1 of the electrolytic cell 11.

  Next, the control device 50 determines whether or not the water level sensor W1 is on (step S103). When the anode chamber S1 is full, the water level sensor W1 is turned on. When the anode chamber S1 is not full, the water level sensor W1 is turned off. When it is determined that the water level sensor W1 is off (step S103: No), the control device 50 continues to turn on the electromagnetic valve V1. On the other hand, when it is determined that the water level sensor W1 is on (step S103: Yes), the control device 50 turns off the electromagnetic valve V1 (step S104). Thereby, supply of the tap water to anode chamber S1 stops.

Next, the control device 50 operates the DC power supply 31 (step S105). Thereby, a voltage is applied to the electrodes 23 and 24 by the DC power supply 31. When a voltage is applied to the electrodes 23 and 24, chlorine ions Cl ⁻ in the salt water stored in the cathode chamber S2 passes through the ion exchange membrane 21 and moves to the anode chamber S1. The chlorine ions Cl ⁻ moved to the anode chamber S1 are oxidized and react with water (H ₂ 0) in the anode chamber S1. Thereby, as shown by the following formula (1), in the anode chamber S1, acidic water containing hypochlorous acid and hydrochloric acid and exhibiting acidity is generated.

2Cl ⁻ + H ₂ 0 → HClO + HCl + 2e ⁻ (1)

In the cathode chamber S2, sodium ions Na ⁺ are generated. Sodium ions Na ⁺ react with the hydroxide ions OH ^{− in the} cathode chamber S2. Thereby, sodium hydroxide is produced. In the cathode chamber S2, hydrogen ions H ⁺ which are counter ions of the hydroxide ions OH ⁻ are reduced to generate hydrogen gas. As shown in the following formula (2), in the cathode chamber S2, alkaline water containing sodium hydroxide and exhibiting alkalinity and hydrogen gas are generated.

2Na ⁺ + 2e ⁻ + 2H ₂ 0 → 2NaOH + H ₂ (2)

  Next, the control device 50 determines whether or not a predetermined time has elapsed since the operation of the DC power supply 31 was started (step S106). The operation time DT per operation of the DC power supply 31 is defined by the size of the electrode 23 and the anode chamber S1, the concentration of salt water stored in the cathode chamber S2, the output current of the DC power supply 31, and the like. When it is determined that the operation time DT has not elapsed since the start of the operation of the DC power supply 31 (step S106: No), the control device 50 continues the operation of the DC power supply 31.

  On the other hand, when it is determined that the operation time DT has elapsed since the operation of the DC power supply 31 was started (step S106: Yes), the control device 50 stops the operation of the DC power supply 31 (step S107). Thereby, the anode chamber S1 is in a state where hypochlorous acid water having a predetermined concentration is generated.

  Next, the control device 50 turns on the electromagnetic valve V2 (step S108). As a result, the electrolyzed water generated in the anode chamber S1 is transferred to the storage tank 12.

  Next, the control device 50 determines whether or not a predetermined time has elapsed since the electromagnetic valve V2 was turned on (step S109). The transfer time TT required to transfer the electrolyzed water to the storage tank 12 is defined by the size of the anode chamber S1, the inner diameter and the length of the conduit 111, and the like. When it is determined that the transfer time TT has not elapsed since the start of the transfer of the electrolyzed water (step S109: No), the control device 50 maintains the electromagnetic valve V2 on to transfer the electrolyzed water. continue.

  On the other hand, when it is determined that the transfer time TT has elapsed since the start of the transfer of the electrolyzed water (step S109: Yes), the control device 50 turns off the electromagnetic valve V2. Thereby, the transfer of the electrolyzed water to the storage tank 12 is stopped. Thereafter, the control device 50 repeatedly executes the processes of steps S101 to S110.

  As described above, in the electrolyzed water production apparatus 10 according to the present embodiment, a certain amount of water is supplied to the anode chamber S1 where the electrolyzed water is generated, and the anode chamber S1 is brought into a hydrostatic state without entering and exiting water. Then, electrolysis is performed. And if electrolyzed water is produced | generated, electrolysis will be once stopped and the electrolyzed water of anode chamber S1 will be transferred to the storage tank 12. FIG. Thus, electrolysis with respect to a predetermined amount of water and transfer of the generated electrolyzed water are alternately repeated, whereby electrolyzed water having a constant concentration is stored in the storage tank 12. Therefore, both continuous supply of electrolyzed water and supply of high-quality electrolyzed water are possible.

  For example, in a flow-through type electrolyzed water production apparatus that continuously supplies and discharges raw water such as tap water to and from the anode chamber S1, electrolyzed water is continuously generated. For this reason, continuous supply of electrolyzed water was possible. However, there are cases where it is difficult to maintain the concentration of the electrolyzed water constant in the flow-through type electrolyzed water production apparatus.

  Moreover, in the storage-type electrolyzed water production apparatus that performs electrolysis with the water in the anode chamber S1 in a still water state, electrolyzed water is generated by energizing a certain amount of water. For this reason, electrolyzed water with a constant concentration can be easily generated. However, in order to use electrolyzed water, it is necessary to wait until the electrolysis in the anode chamber is completed. For this reason, when the electrolyzed water generated in the anode chamber is used up, it is necessary to refrain from using electrolyzed water until the next electrolyzed water is generated. Further, the amount of electrolyzed water obtained by one electrolysis is determined by the capacity of the anode chamber. However, if the capacity of the electrode chamber is increased, the time until the generation of the electrolyzed water is increased, so it is not realistic to increase the capacity of the electrode chamber extremely. As described above, the storage-type electrolyzed water production apparatus has a problem for continuously supplying electrolyzed water.

  In the electrolyzed water production apparatus 10 according to the present embodiment, continuous supply of electrolyzed water, which is an advantage of a water-flow type electrolyzed water production apparatus, and high-quality electrolyzed water, which is an advantage of a storage-type electrolyzed water production apparatus. It becomes possible to balance supply.

  Moreover, in the electrolyzed water manufacturing apparatus 10 which concerns on this embodiment, the continuous supply of high quality electrolyzed water and simplification of an apparatus are realizable.

  The concentration of hypochlorous acid and the like contained in the electrolyzed water varies depending on the current value during electrolysis and the electrolysis efficiency of the electrolyzer, as well as the amount of raw water supplied to the electrolyzer. The current value during electrolysis can be easily controlled to a predetermined value, and the electrolysis efficiency of the electrolytic cell can be obtained in advance. However, the flow rate of raw water fluctuates due to fluctuations in the pressure of the raw water and fluctuations in the back pressure of the destination of the electrolyzed water. For this reason, for example, in the flow-through type electrolyzed water production apparatus 10, a constant flow valve for maintaining a constant concentration of electrolyzed water is attached to the piping path, or the supply amount of raw water and electrolyzed water using a flow meter The amount of discharged water is monitored, and control is performed to adjust control valves provided in the raw water supply pipe and the electrolytic water drain pipe.

  However, the constant flow valve has a limitation in the water pressure range that can be controlled to a constant flow rate, and the accuracy is not high. Further, the flow rate and the control valve can be used to accurately control the supply amount of raw water and the amount of electrolyzed water, but the flow meter and the control valve are relatively large and expensive. Therefore, it is difficult to apply to a small electrolyzed water production apparatus.

  The electrolyzed water production apparatus 10 according to the present embodiment does not require a constant flow valve, a flow meter, a control valve, or the like. Therefore, it is possible to simplify and downsize the apparatus while realizing continuous supply of electrolyzed water. As a result, the manufacturing cost and running cost of the device can be reduced.

  Moreover, the electrolyzed water manufacturing apparatus 10 which concerns on this embodiment is provided with the storage tank 12 which stores electrolyzed water. Therefore, it becomes possible to supply electrolyzed water irrespective of the operating condition of the electrolyzed water manufacturing apparatus 10.

  Although the water-flow type electrolyzed water production apparatus can only supply a certain amount of electrolyzed water regardless of fluctuations in demand, the electrolyzed water production apparatus 10 supplies electrolyzed water as long as the capacity of the storage tank 12 permits. Even if fluctuates, stable supply becomes possible. Moreover, the stable supply of electrolyzed water is attained, without waiting for the production | generation of electrolyzed water like the storage-type electrolyzed water manufacturing apparatus.

  In this embodiment, although the electrolyzed water manufacturing apparatus itself includes the storage tank 12, the storage tank 12 may be separated from the electrolyzed water manufacturing apparatus.

  Further, the water level sensor W2 may be integrally attached to the tip of the pipe line 111. For example, in the case where an existing tank is used as a storage tank, if the water level sensor W2 is provided at the tip of the pipe 111, the electrolyzed water production apparatus operates as described above by appropriately attaching the pipe 111 to the existing tank. It becomes possible to do.

  When a container such as a bucket is used as an existing tank, it may be difficult to attach the water level sensor W2 to the tank. In this case, as the process of step S101 of the control flow, the amount of electrolyzed water may be received and it may be determined whether to perform electrolysis based on whether or not the received value is exceeded. For example, when a bucket with a capacity of 7L is arranged under the electrolyzed water production apparatus and electrolyzed water is supplied to this, if the volume VOL2 of the anode chamber S2 is 1L, the user etc. electrolyzes 6L of this multiple, for example. Enter into water production equipment. The electrolyzed water production apparatus that has received 6 L of electrolyzed water supply generates and drains the electrolyzed water six times. Thereby, 6 L of electrolyzed water is supplied to the bucket. Even in this case, if the volume VOL2 of the electrode chamber S1 is too large, the amount of production per one time is too rough for a generally used container. Therefore, as described above, the volume VOL2 of the electrode chamber S1 is desirably 0.5 to 5L.

  In the present embodiment, a case has been described in which acidic water is generated a plurality of times in the anode chamber S1 without replacing the salt water in the cathode chamber S2. Not limited to this, the salt water in the cathode chamber S2 may be replaced as appropriate. For example, in the case of an apparatus having a mechanism for automatically supplying and discharging salt water to the cathode chamber S2, when the concentration of the salt water in the cathode chamber S2 is reduced by performing electrolysis to generate acidic water, It is good also as replacing | exchanging salt water suitably.

  Specifically, drainage and water supply for salt water for exchanging the salt water in the cathode chamber S2 are automatically performed once every five times of electrolytic treatment and water supply / drainage in the anode chamber S1. As a mechanism for automatically exchanging the salt water in the cathode chamber S2, as with the mechanism for supplying raw water to the anode chamber S1, a salt water supply pipe and a drain pipe having an electromagnetic valve and connected to the cathode chamber S1 are used. And so on.

<< Second Embodiment >>
Next, a second embodiment will be described based on the drawings. About the structure which is the same as that of 1st Embodiment, or equivalent, while using an equivalent code | symbol, the description is abbreviate | omitted or simplified.

  FIG. 3 is a diagram showing a schematic configuration of an electrolyzed water production apparatus 10A according to the second embodiment. The electrolyzed water production apparatus 10A is an apparatus that generates acidic water containing acidic hypochlorous acid and alkaline water containing alkaline sodium hydroxide by electrolyzing salt water. The electrolyzed water production apparatus 10A is different from the electrolyzed water production apparatus 10 according to the first embodiment in that the electrolytic cell 11 is partitioned into an anode chamber S1, a cathode chamber S2, and an intermediate chamber S3.

  As shown in FIG. 3, the electrolyzed water production apparatus 10 </ b> A includes an electrolyzer 11, storage tanks 12 </ b> A and 12 </ b> B, a DC power supply 31, and a control device 50.

The electrolytic cell 11 is a container made of resin, stainless steel, or the like. The inside of the electrolytic cell 11 is divided into an anode chamber S1, a cathode chamber S2, and an intermediate chamber S3 by a set of ion exchange membranes 21 and 22. Ion exchange membrane 21 is, for example, chlorine ion Cl ^- is an anion exchange membrane having a property of passing anions such. The ion exchange membrane 22 is a cation exchange membrane having a property of allowing cations such as sodium ion Na ⁺ to pass therethrough.

  As the anion exchange membrane, Neoceptor (registered trademark) manufactured by Astom, Selemion (registered trademark) manufactured by AGC Engineering, or the like can be used. As the cation exchange membrane, for example, NAFION (registered trademark) 112, 115, 117 of EI DuPont, Flemion (registered trademark) of Asahi Glass Co., Ltd., ACIPLEX (registered trademark) of Asahi Kasei Co., Ltd., or the like is used. be able to. Further, a porous membrane can be used in place of both or one of the ion exchange membranes 21 and 22.

  The intermediate chamber S3 is a space sandwiched between the two ion exchange membranes 21 and 22. The intermediate chamber S3 is filled with water containing sodium chloride (NaCl) as an electrolyte.

  The anode chamber S1 is a space adjacent to the intermediate chamber S3 through the ion exchange membrane 21. An electrode 23 for generating acidic water is disposed in the anode chamber S1. The cathode chamber S2 is a space adjacent to the intermediate chamber S3 through the ion exchange membrane 22. In the cathode chamber S2, an electrode 24 for generating alkaline water is disposed.

  The anode chamber S1 and the cathode chamber S2 are connected to a commercial water supply facility via a conduit 110. In addition, the anode chamber S1 is connected to the storage tank 12A via the conduit 111A, and the cathode chamber S2 is connected to the storage tank 12B via the conduit 111B.

  Tap water is supplied from the water supply facility to the anode chamber S1 and the cathode chamber S2. The tap water supplied from the water supply facility to the anode chamber S1 is controlled by the electromagnetic valve V11, and the tap water supplied from the water supply facility to the cathode chamber S2 is controlled by the electromagnetic valve V12. The solenoid valves V11 and V12 are, for example, normally closed solenoid valves. The water level in the anode chamber S1 is detected by a water level sensor W1. The water level in the cathode chamber S2 is detected by a water level sensor W3.

  The storage tanks 12 </ b> A and 12 </ b> B have the same configuration and are installed at a position lower than the electrolytic cell 11. The storage tank 12A is connected to the anode chamber S1 of the electrolytic cell 11 via a pipe line 111A. In addition, the storage tank 12B is connected to the cathode chamber S2 of the electrolytic cell 11 via a conduit 111B. The water levels of the storage tanks 12A and 12B are detected by, for example, water level sensors W2 and W4. The storage tanks 12A and 12B are provided with an overflow pipe 120, and an upper limit of the level of the electrolyzed water to be stored is defined.

  One end of the pipe line 111A is connected to the bottom of the anode chamber S1, and the other end is connected to the top of the storage tank 12A. The electrolyzed water generated in the anode chamber S1 is transferred to the storage tank 12A via the pipe line 111A and stored. In addition, the electrolyzed water stored in the storage tank 12A is supplied to an external device or the like serving as a use point of the electrolyzed water via the pipe 112A.

  One end of the conduit 111B is connected to the bottom of the cathode chamber S2, and the other end is connected to the top of the storage tank 12B. The electrolyzed water generated in the cathode chamber S2 is transferred and stored in the storage tank 12B via the pipe line 111B. In addition, the electrolyzed water stored in the storage tank 12B is supplied to an external device or the like serving as a use point of the electrolyzed water via the pipe line 112B.

  Solenoid valves V21 and V31 are provided in the pipelines 111A and 112A, respectively. The solenoid valve V21 is a normally closed solenoid valve, for example. The electrolyzed water generated in the anode chamber S1 is transferred to the storage tank 12A when the electromagnetic valve V21 is on, and the transfer to the storage tank 12A is stopped when the electromagnetic valve V21 is off. The electromagnetic valve V31 is an electromagnetic valve controlled by a user of the electrolyzed water production apparatus 10A or an external device. The electrolyzed water in the storage tank 12A is supplied to the use point when the electromagnetic valve V31 is open. When the solenoid valve V31 is closed, supply to the use point is stopped.

  Similarly, solenoid valves V22 and V32 are provided in the pipelines 111B and 112B, respectively. The electrolyzed water generated in the cathode chamber S2 is transferred to the storage tank 12B when the electromagnetic valve V22 is on. When the solenoid valve V22 is off, the transfer to the storage tank 12B is stopped. Further, the electrolyzed water in the storage tank 12B is supplied to the use point when the electromagnetic valve V32 is open. When the solenoid valve V32 is closed, supply to the use point is stopped.

  The control device 50 drives the DC power supply 31 and the electromagnetic valves V11, V12, V21, and V22 described above based on the program stored in the auxiliary storage.

  Next, the operation of the electrolyzed water production apparatus 10A configured as described above will be described. FIG. 4 is a flowchart showing a series of processing executed by the control device 50. The electrolyzed water production apparatus 10 </ b> A operates when the control device 50 performs a process according to the flowchart of FIG. 4. Hereinafter, the process performed by the control device 50 will be described with reference to FIG.

  As a premise for explanation, it is assumed that the electromagnetic valves V11, V12, V21, and V22 are closed and the DC power supply 31 is stopped. The anode chamber S1, the cathode chamber S2, and the storage tanks 12A and 12B are empty, and the intermediate chamber S3 is filled with salt water.

  First, the control device 50 determines whether or not both of the water level sensors W2 and W4 are on (step S201). When the storage tanks 12A and 12B are full, the water level sensors W2 and W4 are turned on. When the storage tanks 12A and 12B are not full, the water level sensors W2 and W4 are turned off. When it is determined that both of the water level sensors W2 and W4 are on (step S201: Yes), the control device 50 waits for the electrolytic water in the storage tanks 12A and 12B to be drained by the user or an external device.

  On the other hand, when it is determined that at least one of the water level sensors W2 and W4 is off (step S201: No), the control device 50 turns on the electromagnetic valves V11 and V12 (step S202). Thereby, tap water is supplied to the anode chamber S1 and the cathode chamber S2 of the electrolytic cell 11.

  Next, the control device 50 determines whether or not the water level sensor W1 is on (step S203). When the anode chamber S1 is full, the water level sensor W1 is turned on. When the anode chamber S1 is not full, the water level sensor W1 is turned off. When it is determined that the water level sensor W1 is off (step S203: No), the control device 50 continues to turn on the electromagnetic valve V11. On the other hand, when it is determined that the water level sensor W1 is on (step S203: Yes), the control device 50 turns off the electromagnetic valve V11 (step S204). Thereby, supply of the tap water to anode chamber S1 stops.

  Next, the control device 50 determines whether or not the water level sensor W3 is on (step S205). The water level sensor W3 is turned on when the cathode chamber S2 is full, and the water level sensor W3 is turned off when the cathode chamber S2 is not full. When it is determined that the water level sensor W3 is off (step S205: No), the control device 50 continues turning on the electromagnetic valve V12. On the other hand, when it is determined that the water level sensor W3 is on (step S205: Yes), the control device 50 turns off the electromagnetic valve V12 (step S206). As a result, the supply of tap water to the cathode chamber S2 is stopped.

  Next, the control device 50 determines whether or not both of the water level sensors W1 and W3 are on (step S207). When it is determined that at least one of the water level sensors W1 and W3 is off (step S207: No), the control device 50 repeatedly executes the processes of steps S203 to S206.

On the other hand, when it is determined that both the water level sensors W1 and W3 are on (step S207: Yes), the control device 50 operates the DC power supply 31 (step S208). Thereby, from the intermediate chamber S3 between the electrode 23 and the electrode 24, the chlorine ion Cl ⁻ in the salt water passes through the ion exchange membrane 21 and moves to the anode chamber S1. The chlorine ions Cl ⁻ moved to the anode chamber S1 are oxidized and react with water (H ₂ 0) in the anode chamber S1. Thereby, as shown by the following formula (3), in the anode chamber S1, acidic water containing hypochlorous acid and hydrochloric acid and exhibiting acidity is generated.

2Cl ⁻ + H ₂ 0 → HClO + HCl + 2e ⁻ (3)

Further, from the intermediate chamber S3, sodium ions Na ⁺ pass through the ion exchange membrane 22 and move to the cathode chamber S2. The sodium ions Na ⁺ that have moved to the cathode chamber S2 react with the hydroxide ions OH ^{− in the} cathode chamber S2. Thereby, sodium hydroxide is produced. In the cathode chamber S2, hydrogen ions H ⁺ which are counter ions of the hydroxide ions OH ⁻ are reduced to generate hydrogen gas. As shown in the following formula (4), in the cathode chamber S2, alkaline water containing sodium hydroxide and exhibiting alkalinity and hydrogen gas are generated.

2Na ⁺ + 2e ⁻ + 2H ₂ 0 → 2NaOH + H ₂ (4)

  Next, the control device 50 determines whether or not a predetermined time has elapsed since the operation of the DC power supply 31 was started (step S209). When it is determined that the predetermined time has not elapsed since the operation of the DC power supply 31 is started (step S209: No), the control device 50 continues the operation of the DC power supply 31.

  On the other hand, when it is determined that the predetermined time has elapsed since the operation of the DC power supply 31 is started (step S209: Yes), the control device 50 stops the operation of the DC power supply 31 (step S210). Thereby, acidic water mainly containing hypochlorous acid water is generated in the anode chamber S1, and alkaline water mainly containing sodium hydroxide is generated in the cathode chamber S2.

  Next, the control device 50 turns on the electromagnetic valves V21 and V22 (step S211). As a result, the electrolyzed water generated in the anode chamber S1 is transferred to the storage tank 12A, and the electrolyzed water generated in the cathode chamber S2 is transferred to the storage tank 12B.

  Next, the control device 50 determines whether or not a predetermined time has elapsed since the electromagnetic valves V21 and V22 were turned on (step S212). When it is determined that the predetermined time has not elapsed (step S212: No), the control device 50 continues to turn on the electromagnetic valves V21 and V22.

  On the other hand, when it is determined that the predetermined time has elapsed since the start of the transfer of the electrolyzed water (step S212: Yes), the control device 50 turns off the electromagnetic valves V21 and V22. Thereby, the transfer of the electrolyzed water to the storage tanks 12A and 12B is stopped. Thereafter, the control device 50 repeatedly executes the processes of steps S201 to S213.

  As described above, in the electrolyzed water production apparatus 10A according to this embodiment, a certain amount of water is supplied to the anode chamber S1 and the cathode chamber S2 in which electrolyzed water is generated, and the anode chamber S1 and the cathode chamber S2 enter and exit the water. Electrolysis is performed after the water is kept in a static water state. And if electrolyzed water is produced | generated, electrolysis will once be stopped and the electrolyzed water of anode chamber S1 and cathode chamber S2 will be transferred to storage tank 12A, 12B, respectively. As described above, electrolysis with respect to a predetermined amount of water and transfer of the generated electrolyzed water are alternately repeated, so that electrolyzed water having a constant concentration is stored in the storage tanks 12A and 12B. Therefore, both continuous supply of electrolyzed water and supply of high-quality electrolyzed water are possible. Moreover, in the electrolyzed water manufacturing apparatus 10A according to the present embodiment, continuous supply of high-quality electrolyzed water and simplification of the apparatus can be realized.

  Moreover, the electrolyzed water production apparatus 10A according to the present embodiment includes storage tanks 12A and 12B that store anode water mainly containing hypochlorous acid and cathode water mainly containing sodium hydroxide, respectively. . Therefore, it becomes possible to use anode water and cathode water independently.

  For example, in the conventional water flow type electrolyzed water production apparatus, when the same amount of anode water and cathode water is not used, one of the excess electrolyzed water must be discarded. However, in the electrolyzed water production apparatus 10A according to the present embodiment, the anode water and the cathode water can be stored separately, and can be used independently.

  Moreover, the mixing mechanism for mixing the electrolyzed water of the storage tank 12A and the electrolyzed water of the storage tank 12B can also be provided in the electrolyzed water production apparatus 10A. Thereby, the electrolyzed water of a desired pH value can be obtained and the use expansion of an electrolyzed water manufacturing apparatus can be aimed at.

<< Third Embodiment >>
Next, a third embodiment will be described based on the drawings. About the same or equivalent structure as the said embodiment, while using an equivalent code | symbol, the description is abbreviate | omitted or simplified.

  FIG. 5 is a diagram showing a schematic configuration of an electrolyzed water production apparatus 10B according to the third embodiment. The electrolyzed water production apparatus 10B has an electrolysis according to the first embodiment in that it includes a salt water tank 13 and the storage tank 12 is arranged so as to be as high as or higher than the electrolyzer 11. It is different from the water production apparatus 10.

  The salt water tank 13 is a tank that stores salt water. The salt water tank 13 is connected to the electrolytic cell 11 via pipe lines 113 and 114. A circulation pump 51 is provided in the pipe line 114. The circulation pump 51 supplies the salt water from the salt water tank 13 to the cathode chamber S <b> 2 of the electrolytic cell 11 based on an instruction from the control device 50. Thereby, salt water circulates between the cathode chamber S2 of the electrolytic cell 11 and the salt water tank 13. The amount of salt water returning from the cathode chamber S2 to the salt water tank 13 is adjusted by, for example, a pressure adjustment valve (not shown).

  The storage tank 12 is installed not on the lower side of the electrolytic cell 11 but on a floor at the same level as or above the floor on which the electrolytic cell 11 is installed. A transfer pump 52 is provided in the pipe line 111 connecting the storage tank 12 and the electrolytic cell 11 instead of the electromagnetic valve. The transfer pump 52 transfers the electrolyzed water generated in the anode chamber S <b> 1 to the storage tank 12 based on an instruction from the control device 50.

  In the electrolyzed water production apparatus 10B according to the present embodiment, salt water circulates between the salt water tank 13 and the cathode chamber S2. For this reason, the concentration change of the salt water in the cathode chamber S2 is suppressed, and as a result, the electrolyzed water can be generated stably.

  Moreover, the electrolyzed water production apparatus 10 </ b> B according to the present embodiment includes a transfer pump 52. Therefore, it is not necessary to arrange the storage tank 12 below the electrolytic cell 11. For example, the storage tank 12 can be installed on the side of the electrolytic cell 11 or at a position away from the electrolytic cell 11. Therefore, the freedom degree at the time of installing an electrolyzed water manufacturing apparatus improves. For example, when the ceiling where the electrolyzed water production apparatus is installed is low, or when the storage tank needs to be arranged higher than the electrolyzer, the electrolyzed water production apparatus can be installed.

<< Fourth Embodiment >>
Next, a fourth embodiment will be described based on the drawings. About the same or equivalent structure as the said embodiment, while using an equivalent code | symbol, the description is abbreviate | omitted or simplified.

  FIG. 6 is a diagram showing a schematic configuration of an electrolyzed water production apparatus 10C according to the fourth embodiment. The electrolyzed water production apparatus 10 </ b> C is different from the electrolyzed water production apparatus 10 according to the first embodiment in that it includes a plurality of electrolysis tanks 11.

  As shown in FIG. 6, the electrolyzed water production apparatus 10 </ b> C includes units U <b> 1 and U <b> 2 including an electrolytic cell 11, electrodes 23 and 24, and an ion exchange membrane 21. The anode chamber S1 of each unit U1, U2 is connected to a storage tank 12 common to the units U1, U2. And each unit U1, U2 is controlled by the control apparatus 50 according to the flowchart shown in FIG.

  The electrolyzed water production apparatus 10 </ b> C according to the present embodiment includes a plurality of units U <b> 1 and U <b> 2 that include the electrolytic cell 11. Therefore, the generation amount of electrolyzed water can be increased and the reliability against failure can be improved.

  For example, in a flow-through type electrolyzed water production apparatus, in order to increase the amount of electrolyzed water generated, the current during electrolysis is increased by increasing the area of the electrode, and the electrolyzed water generated per unit time is increased. Increasing the amount is generally done. However, if the current during electrolysis is increased, the current distribution in the electrolytic cell is likely to be non-uniform, and the generated electrolytic water may not have the desired properties, or the electrolytic cell may generate heat. Moreover, the electrolyzed water production apparatus is also enlarged.

  The structure of the electrolyzer and auxiliary equipment of the storage-type electrolyzed water production apparatus is simple compared to the structure of the electrolysis tank and auxiliary equipment of a general water-flow type electrolyzed water production apparatus. Therefore, the electrolyzed water production apparatus 10C has a structure in which a plurality of units including electrolyzers are mounted and the electrolyzed water generated by each unit is stored in a common storage tank. Thereby, the apparent amount of electrolyzed water generated can be increased.

  By adopting such a configuration, an electrolytic cell having a standard specification is set as an electrolytic cell constituting each unit, and the number of each unit is set to two or more according to the specification of the electrolyzed water production apparatus. By increasing the number, an electrolyzed water production apparatus having a desired specification can be realized. By standardizing the specifications of the electrolytic cell, it is possible to simplify the process management and quality control of the electrolyzed water production apparatus, thereby reducing the production cost and running cost of the product.

  In addition, when the electrolyzed water production apparatus 10C according to the present embodiment includes a plurality of units, even if a failure occurs in the electrolyzer of any unit, the remaining units are used for electrolysis. Although the water generation ability is reduced, the generation of electrolyzed water can be continued. Therefore, the reliability of the electrolyzed water production apparatus can be greatly improved, and the apparatus is suitable when the supply of electrolyzed water affects the operation of the entire factory.

<< Fifth Embodiment >>
Next, a fifth embodiment will be described with reference to the drawings. About the same or equivalent structure as the said embodiment, while using an equivalent code | symbol, the description is abbreviate | omitted or simplified.

  FIG. 7 is a diagram showing a schematic configuration of an electrolyzed water production apparatus 10D according to the fifth embodiment. The electrolyzed water production apparatus 10D is different from the electrolyzed water production apparatus 10 according to the first embodiment in that the electrolyzed water production apparatus 10D includes a storage tank 14 that stores water supplied to the anode chamber S1.

  As shown in FIG. 7, the storage tank 14 is disposed above the electrolytic cell 11. The storage tank 14 is pre-filled with raw water such as tap water or well water before electrolysis. The storage tank 14 and the anode chamber S1 are connected by a pipe line 110. When the electromagnetic valve V1 provided in the pipeline 110 is turned on, the raw water stored in the storage tank 14 is supplied to the anode chamber S1 by gravity. Also in the electrolyzed water production apparatus 10D, the control according to the flowchart shown in FIG.

  The electrolyzed water production apparatus 10D according to the present embodiment includes a storage tank 14 that can be filled with raw water such as tap water and well water in advance. Therefore, the portability of the electrolyzed water production apparatus can be improved, and the degree of freedom of installation location can be improved.

  For example, in the electrolyzed water production apparatuses 10, 10 </ b> A to 10 </ b> C according to the above embodiment, the water supplied to the anode chamber S <b> 1 is premised on pressurized water such as tap water or well water fed by a pump. Therefore, it is possible to supply raw water to the anode chamber S1 simply by opening the electromagnetic valves V1, V11, and V12. However, in this type of electrolyzed water production apparatus, it is essential to connect to a water supply facility by piping. Therefore, the portability of an electrolyzed water manufacturing apparatus and the freedom degree of an installation place are inferior.

  As an electrolyzed water production apparatus excellent in portability, a small storage type electrolyzed water production apparatus having a pot-shaped electrolyzer is commercially available. However, such an electrolyzed water production apparatus is small and generates a small amount of electrolyzed water per time. In addition, it is difficult to continuously supply electrolyzed water, and when the generated electrolyzed water is consumed, it takes time to generate electrolyzed water again.

  The electrolyzed water production apparatus 10D according to the present embodiment includes both a storage tank 12 for storing electrolyzed water and a storage tank 14 for storing raw water. Therefore, the continuous supply of electrolyzed water, which is an advantage of a water-flow type electrolyzed water production device, and the supply of high-quality electrolyzed water, which is an advantage of a storage-type electrolyzed water production device, are compatible with portability and installation. It becomes possible to improve the freedom degree of a place.

  As described above in detail, according to the electrolyzed water production apparatus of the present invention, various problems that the conventional water-flow type electrolyzed water production apparatus and the storage type electrolyzed water production apparatus had, respectively, were solved and excellent in expandability. It is possible to provide an electrolyzed water production apparatus.

  As mentioned above, although embodiment of this invention was described, this invention is not limited by the said embodiment. For example, in the above embodiment, as shown in FIG. 3, a case where raw water is supplied to the electrolytic cell 11 through the conduit 110 drawn into the upper part of the anode chamber S1 and the cathode chamber S2 of the electrolytic cell 11 will be described. did. As an example, as shown in FIG. 8, raw water may be supplied to the electrolytic cell 11 through pipes 110 </ b> A and 110 </ b> B drawn to the lower part of the electrolytic cell 11.

  By providing transfer pipes 53 and 54 capable of normal rotation and reverse rotation, or supply and drainage pumps in the pipe lines 110A and 110B extending to the lower part of the electrolytic cell 11, the pipe line 110A. 110B can be used not only to supply raw water but also to drain raw water. Thereby, simplification and size reduction of an apparatus are realizable.

  In the example shown in FIG. 8, the conduits 110 </ b> A and 110 </ b> B are drawn from the upper part of the electrolytic cell 11 to the lower part. Not limited to this, the pipe lines 110 </ b> A and 110 </ b> B may be connected to the bottom of the electrolytic cell 11.

  As mentioned above, although embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10,10A-10D Electrolyzed water manufacturing apparatus 11 Electrolytic tank 11a, 11b Casing 12,12A, 12B, 14 Storage tank 13 Salt water tank 21,22 Ion exchange membrane 23,24 Electrode 31 DC power supply 50 Control apparatus 51 Circulation pump 52-54 Transfer pump 110, 110A, 110B Pipe line 111, 111A, 111B Pipe line 120 Overflow pipe 112, 112A, 112B Pipe line 113, 114 Pipe line S1 Anode chamber S2 Cathode chamber S3 Intermediate chamber U1, U2 Units V1-V3, V11, V12, V21, V22, V31, V32 Solenoid valve W1-W4 Water level sensor

Claims (16)

An electrolytic cell;
A diaphragm that divides the electrolytic cell into at least a first electrode chamber in which a first electrode is disposed and a second electrode chamber in which a second electrode having a polarity different from that of the first electrode is disposed;
A power source for applying a voltage to the first electrode and the second electrode;
A supply system for supplying water to the first electrode chamber;
A drainage system for draining water from the first electrode chamber to the storage means;
Control means for alternately driving the supply system, the power source, and the drainage system to continuously generate electrolyzed water and drain the electrolyzed water;
An electrolyzed water production apparatus comprising: Water is supplied to the first electrode chamber,
In the second electrode chamber, salt water is stored,
2. The electrolyzed water production according to claim 1, wherein a cycle of supplying water, generating electrolyzed water, and draining electrolyzed water is performed at least twice in the first electrode chamber without replacing the salt water in the second electrode chamber. apparatus. The first electrode chamber and the second electrode chamber and an intermediate chamber that is partitioned through the diaphragm and stores salt water,
The cycle of supplying water, generating electrolyzed water, and draining electrolyzed water is performed at least twice in at least the first electrode chamber or the second electrode chamber without replacing the salt water in the intermediate chamber. The electrolyzed water manufacturing apparatus described in 1.   The electrolyzed water production apparatus according to claim 2, wherein a capacity of the second electrode chamber in which salt water is stored is smaller than a capacity of the first electrode chamber.   The electrolyzed water production apparatus according to claim 3, wherein a capacity of the intermediate chamber in which salt water is stored is smaller than a capacity of the first electrode chamber.   The electrolyzed water production apparatus according to any one of claims 2 to 5, wherein a capacity of the first electrode chamber is 0.5L or more and 5L or less.   The electrolyzed water production apparatus according to any one of claims 2 to 6, wherein the replacement of the salt water is performed once for 2 to 20 cycles of supplying water, generating electrolyzed water, and draining electrolyzed water. A water supply port for supplying water from the supply system is formed in the upper part of the first electrode chamber,
The electrolyzed water production apparatus according to any one of claims 1 to 7, wherein a drain outlet for draining water into the drainage system is formed at a lower portion of the first electrode chamber.   The electrolyzed water production apparatus according to any one of claims 1 to 8, wherein a storage tank that stores water drained from the drainage system is disposed below the electrolyzer.   The electrolyzed water production apparatus according to claim 9, wherein a capacity of the storage tank is five times or more that of the first electrode chamber. The storage tank is provided with a full water sensor that detects storage of water of a rated capacity,
11. The electrolyzed water production apparatus according to claim 9, wherein the full water sensor operates while leaving a margin of capacity equivalent to the capacity of the first electrode chamber in the storage tank.   The electrolyzed water production apparatus according to claim 11, wherein the full water sensor is provided integrally with a distal end portion of the drainage system.   The electrolyzed water production apparatus according to any one of claims 9 to 12, comprising a plurality of the electrolyzers, wherein the drainage system drains water from the first electrode chamber of each of the electrolyzers to the storage tank.   The control unit according to claim 13, wherein when any of the electrolytic cells fails, the control unit stops electrolysis in the failed electrolytic cell and generates electrolytic water using the normal electrolytic cell. Electrolyzed water production equipment.   The electrolyzed water manufacturing apparatus according to any one of claims 1 to 14, wherein each section of the electrolyzer is supplied and drained with water through a pipe line that leads to a bottom of the electrolyzer. The supply system is
A raw water tank that is disposed above the electrolytic cell and stores water to be supplied to the electrolytic cell;
A pipe line connecting the raw water tank and the electrolytic cell;
The electrolyzed water manufacturing apparatus as described in any one of Claims 1 thru | or 15 provided with these.

Images