JP6392443B2 - Electrolyzed water generating apparatus and electrolyzed water generating method - Google Patents

Description

  Embodiments described herein relate generally to an electrolyzed water generating apparatus and an electrolyzed water generating method.

  There is an electrolyzed water generating device that generates electrolyzed water such as hypochlorous acid water or alkali ion water in a container by electrolysis. In such an electrolyzed water generating apparatus, if the electrolyte is eluted in the water in the container, the electrolysis can be performed as it is, and the structure of the apparatus becomes simple, but in this case, the electrolyte remains in the generated electrolyzed water. End up.

  If the electrolytic solution containing the electrolyte and the water that is the basis of the electrolyzed water are separated by a diaphragm, it is possible to prevent the electrolyte from being mixed into the electrolyzed water. For example, in Patent Document 1, the inside of a casing is divided into three chambers of an anode chamber, an intermediate material, and a cathode chamber by a diaphragm, an electrolytic solution is circulated through a circulation channel including the intermediate chamber, and the electrolytic solution in the intermediate chamber is electrolyzed. An apparatus for obtaining acidic electrolyzed water from the anode chamber and alkaline electrolyzed water from the cathode chamber is disclosed. In this apparatus, since the above-described circulation flow path is used, the configuration becomes complicated. Further, the pressure between the chambers fluctuates, and the electrolysis characteristics may become unstable. Further, since the electrolytic solution is circulated, the state of the electrolytic solution is changed by electrolysis, and this change is concentrated and accumulated by the circulation, causing various problems.

  Patent Document 2 discloses a configuration in which an apparatus filled with an electrolytic solution is placed in a water tank and the water in the water tank is electrolyzed. With such a configuration, the water in the aquarium and the electrolytic solution in the apparatus are in a still water state, the pressure becomes constant, the electrolytic characteristics are stabilized, and the electrolyte does not remain in the generated electrolytic water. However, since this apparatus does not include a flow path for the electrolytic solution, it is necessary to refill the electrolytic solution every time the electrolytic solution is consumed. Therefore, electrolyzed water cannot be produced efficiently.

Japanese Patent No. 3500173 Japanese Patent No. 3551288

  The problem to be solved by the present invention is to provide an electrolyzed water generating apparatus and an electrolyzed water generating method capable of generating electrolyzed water efficiently or stably without being affected by flowing water pressure with a simple configuration. It is to be.

The electrolyzed water generating device in one embodiment includes an electrolysis unit, a non-circulating flow path, a liquid feeding device, and a control device. The electrolysis unit contains a first electrode, a second electrode facing the first electrode, a first diaphragm disposed between the first electrode and the second electrode, and an electrolytic solution. An electrolyte chamber that includes a diaphragm as a part of the wall surface and does not include the first electrode is disposed in a container that contains water, and electrolyzed water is generated from the water in the container. The flow path includes the electrolyte chamber. The liquid feeding device causes a liquid to flow through the flow path. The control device stops supplying the electrolytic solution to the electrolytic solution chamber by the liquid feeding device and discharging the electrolytic solution from the electrolytic solution chamber, and energizes the first electrode and the second electrode. The first operation and the second operation of supplying the specified amount of electrolyte to the electrolyte chamber and discharging the specified amount of electrolyte from the electrolyte chamber are alternately performed by the liquid delivery device .

FIG. 1 is a diagram schematically showing an electrolyzed water generating apparatus according to the first embodiment. FIG. 2 is a flowchart showing the electrolysis operation of the electrolyzed water generating apparatus. FIG. 3 is a diagram schematically showing an electrolyzed water generating apparatus according to the second embodiment. FIG. 4 is a diagram schematically illustrating an electrolyzed water generating device according to the third embodiment. FIG. 5 is a diagram schematically illustrating an electrolyzed water generating device according to the fourth embodiment.

  Several embodiments will be described with reference to the drawings. Throughout each embodiment, the same or similar elements are denoted by the same reference numerals, and redundant description is omitted. Each figure is a schematic diagram for the purpose of understanding the embodiment, and the shape and dimensions of the elements shown in each figure may be different from the actual apparatus. Changes may be made as appropriate in consideration of technology and the like.

(First embodiment)
Drawing 1 is a figure showing roughly electrolyzed water generating device 1 concerning a 1st embodiment. The electrolyzed water generating apparatus 1 is a so-called batch-type electrolyzed water generating apparatus, and includes an electrolysis unit 2, a first tank 3, a second tank 4, and a controller 5.

  The electrolysis unit 2 has a shape that can be disposed (can be charged) in the water tank 60. The water tank 60 stores electrolyzed raw water that is a source of electrolyzed water, such as water. The water tank 60 is an example of a container. The electrolyzed water generating apparatus 1 may further include this water tank 60. At least during electrolysis, the water in the water tank 60 is in a state in which almost no flowing water pressure is applied through a pipe connected to the water tank 60. In this specification, water in such a state is referred to as still water.

  The electrolysis unit 2 includes a housing 20, an anode 21, a cathode 22, a first diaphragm 23, and a second diaphragm 24. The anode 21 is an example of a first electrode, and the cathode 22 is an example of a second electrode.

  The housing 20 has a first end 20a and a second end 20b opposite to the first end 20a, and is long and flat between the first end 20a and the second end 20b. It is formed in a box shape. One side surface between the first end portion 20a and the second end portion 20b is open, and the first diaphragm 23 and the second diaphragm 24 are arranged in the housing 20 so as to face each other in this order from the opened side. ing. The electrolysis unit 2 is used in a posture in which the first end 20a is located on the lower side and the second end 20b is located on the upper side in the direction of gravity.

  A space defined by the first diaphragm 23, the second diaphragm 24, and the housing 20 corresponds to an electrolyte chamber 25 filled with an electrolyte (electrolyte aqueous solution). The first diaphragm 23 and the second diaphragm 24 constitute part of the wall surface of the electrolyte chamber 25. Furthermore, the space defined by the second diaphragm 24 and the housing 20 corresponds to a cathode chamber 26 filled with raw electrolytic water that is a source of electrolytic water, for example, water. The second diaphragm 24 constitutes a part of the wall surface of the cathode chamber 26. The first diaphragm 23 and the second diaphragm 24 function as ion exchange membranes. For example, a porous membrane made of polyvinylidene fluoride (PVDF) and titanium oxide having excellent chemical resistance can be used.

  The anode 21 is formed in a flat plate shape, for example, and is disposed in the vicinity of the first diaphragm 23 on the outside of the first diaphragm 23 (the side in contact with the water in the water tank 60). The cathode 22 is formed in a flat plate shape, for example, and is disposed in the cathode chamber 26 in the vicinity of the second diaphragm 24. The anode 21 and the cathode 22 arranged in this manner are opposed to each other with the first diaphragm 23 and the second diaphragm 24 interposed therebetween. The anode 21 is electrically connected to the controller 5 through the wiring L1, and a positive voltage is applied through the wiring L1. On the other hand, the cathode 22 is electrically connected to the controller 5 through the wiring L2, and a negative voltage is applied through the wiring L2.

  When a potential difference is formed between the anode 21 and the cathode 22, chlorine ions that are ionized in the electrolyte solution in the electrolyte chamber 25 are attracted to the anode 21, pass through the first diaphragm 23, and enter the water in the water tank 60. Inflow. Then, chlorine ions are reduced at the anode 21 to generate chlorine gas, and this chlorine gas reacts with the water in the water tank 60 to generate acidic water (water containing hypochlorous acid and hydrochloric acid). On the other hand, sodium ions that are ionized in the electrolyte solution in the electrolyte chamber 25 are attracted to the cathode 22, pass through the second diaphragm 24, and flow into the cathode chamber 26. Then, water is electrolyzed at the cathode 22 to produce hydrogen gas and alkaline water (sodium hydroxide aqueous solution).

  The electrolyzed water generator 1 further includes a first supply pipe 31, a second supply pipe 41, a first discharge pipe 32, and a second discharge pipe 42. The first supply pipe 31 has one end connected to the first tank 3 and the other end connected to the electrolyte chamber 25 from the first end 20 a side of the housing 20. The first discharge pipe 32 has one end connected to the electrolyte chamber 25 from the second end 20b side of the housing 20, and the other end connected to a drainage place (not shown) such as a waste tank. Led. The second supply pipe 41 has one end connected to the water supply source WS and the other end connected to the cathode chamber 26 from the first end 20 a side of the housing 20. The second discharge pipe 42 has one end connected to the cathode chamber 26 from the second end 20 b side of the housing 20 and the other end connected to the second tank 4.

  The electrolyzed water generator 1 further includes an electromagnetic valve 6 provided in the first discharge pipe 32 and an electromagnetic valve 7 provided in the second supply pipe 41. The solenoid valves 6 and 7 are both connected to the controller 5. The electromagnetic valve 6 is switched between a closed state in which the first discharge pipe 32 is closed and an open state in which the first discharge pipe 32 is opened under the control of the controller 5. The electromagnetic valve 7 is switched between a closed state in which the second supply pipe 41 is closed and an open state in which the second supply pipe 41 is opened under the control of the controller 5.

  The first tank 3 stores an electrolytic solution that is an aqueous chloride solution such as salt water. The first tank 3 is disposed at least on the upper side in the direction of gravity with respect to the water surface stored in the water tank 60, for example, on the upper side in the direction of gravity with respect to the entire water tank 60.

  The first supply pipe 31, the electrolytic solution chamber 25, and at least a part of the first discharge pipe 32 are filled with the electrolytic solution supplied from the first tank 3. The outlet of the first discharge pipe 32 (the end on the side not connected to the electrolyte chamber 25) is located below the first tank 3 in the gravity direction. In other words, the first tank 3 is provided at a position higher in the direction of gravity than the outlet of the first discharge pipe 32. When the solenoid valve 6 is in the closed state, the electrolyte in the first supply pipe 31 and the electrolyte chamber 25 does not flow. On the other hand, when the solenoid valve 6 is in the open state, the electrolytic solution in the first tank 3 is supplied to the electrolytic solution chamber 25 through the first supply pipe 31 by the water head pressure, and the same amount of electrolysis as this supplied amount is supplied. The liquid flows out from the electrolyte chamber 25 to the first discharge pipe 32 and is discharged from the outlet of the first discharge pipe 32.

  As described above, the first supply pipe 31, the electrolyte chamber 25, and the first discharge pipe 32 form a non-circulating flow path of the electrolyte system. Further, the electromagnetic valve 6 functions as a liquid feeding device for flowing a liquid (electrolytic solution) through this flow path.

  The water supply source WS is a water supply pipe to which water pressure such as a water pipe is applied. However, the water supply source WS may be a container such as a tank in which water is stored. The second supply pipe 41, the cathode chamber 26, and at least a part of the second discharge pipe 42 are filled with water supplied from the water supply source WS. When the solenoid valve 7 is in the closed state, the water in the second supply pipe 41 and the cathode chamber 26 does not flow. On the other hand, when the electromagnetic valve 7 is in the open state, water from the water supply source WS is supplied to the cathode chamber 26 via the second supply pipe 41, and the same amount of water (for example, alkaline water) as this supplied amount. Flows out from the cathode chamber 26 to the second discharge pipe 42 and is drained to the second tank 4 through the second discharge pipe 42.

  As described above, the second supply pipe 41, the cathode chamber 26, and the second discharge pipe 42 form a non-circulating flow path of the cathode system. Further, the electromagnetic valve 7 functions as a liquid feeding device for flowing a liquid (water or alkaline water) through this flow path.

  The controller 5 is, for example, a processor that plays a central role in controlling the electrolyzed water generating device 1, a memory that stores various setting conditions and a computer program executed by the processor, a power supply device that generates a voltage to be supplied to each unit, an indicator lamp, a display, and the like Display devices, input devices such as buttons or switches, and the like.

  In the state where the electrolysis unit 2 is disposed in the still water of the water tank 60 as shown in FIG. 1, for example, when the user instructs the start of the operation via the input device, the controller 5 executes the electrolysis operation shown in the flowchart of FIG. To do.

  In this electrolysis operation, first, the controller 5 starts energization to the anode 21 and the cathode 22 (step S1). Furthermore, the controller 5 determines whether or not the timing for supplying the electrolyte in the electrolyte chamber 25 has arrived (step S2). If the water supply timing has not arrived, the controller 5 continues energization to the anode 21 and the cathode 22 (NO in step S2). These steps S1 and S2 constitute a first operation.

  By energizing the anode 21 and the cathode 22, acidic water is generated in the water tank 60 and alkaline water is generated in the cathode chamber 26. During energization, the controller 5 closes both the electromagnetic valves 6 and 7. Accordingly, the supply of the electrolytic solution to the electrolytic solution chamber 25 and the discharge of the electrolytic solution from the electrolytic solution chamber 25 are stopped. Similarly, the supply of water to the cathode chamber 26 and the discharge of water (or alkaline water) from the cathode chamber 26 are stopped.

  When it is determined that the water supply timing has arrived (YES in step S2), the controller 5 stops energization of the anode 21 and the cathode 22 (step S3). In a state where the energization is stopped, the controller 5 supplies the first specified amount of electrolyte to the electrolyte chamber 25 and discharges the first specified amount of electrolyte from the electrolyte chamber 25 (step S4). In the present embodiment, in step S4, the controller 5 further supplies a second specified amount of water to the cathode chamber 26 and discharges the second specified amount of water (alkaline water) from the cathode chamber 26. These steps S3 and S4 constitute the second operation.

  In the present embodiment, the controller 5 opens the electromagnetic valve 6 for a time during which the first specified amount of electrolyte flows through the flow path including the first supply pipe 31, the electrolyte chamber 25, and the first discharge pipe 32, The operation of step S4 is performed by opening the electromagnetic valve 7 in the flow path including the second supply pipe 41, the cathode chamber 26, and the second discharge pipe 42 for a time during which the second specified amount of water or alkaline water flows. Realize.

  In the first operation, as the energization of the anode 21 and the cathode 22 is continued, the concentration of the electrolyte in the electrolytic solution in the electrolytic solution chamber 25 (for example, the mass percent concentration) decreases. Furthermore, it has been found that when this concentration is 10% or less of the saturation concentration, the electrolysis performance is significantly reduced. On the other hand, the electrolyte solution is wasted if the electrolyte solution in the electrolyte chamber 25 is replaced in spite of the high concentration. Therefore, the above water supply timing is, for example, the timing before the electrolyte concentration in the electrolyte solution in the electrolyte chamber 25 is lowered to 10%, preferably a regulation defined within the range of 20% to 80%. The timing when the concentration is reached can be set. Such timing can be determined as, for example, the elapsed time from the start of energization. Further, this elapsed time is obtained by experiment to determine the time until the electrolyte concentration decreases from the start of energization to the specified concentration, or the current value when the anode 21 and the cathode 22 are energized, and the capacity of the electrolyte chamber 25. It can obtain by calculating based on.

  In addition, parameters other than time can also be used as water supply timing. As the concentration of the electrolyte in the electrolytic solution in the electrolytic solution chamber 25 decreases, the potential difference between the anode 21 and the cathode 22 increases. Therefore, the water supply timing may be a timing at which the potential difference between the anode 21 and the cathode 22 reaches a specified value. This specified value can be set to a value larger than the potential difference between the anode 21 and the cathode 22 at the time when the electrolyte concentration is reduced to the specified concentration, for example.

  After step S4, the controller 5 determines whether or not the condition for terminating the electrolysis operation is satisfied (step S5). If the end condition is not satisfied (NO in step S5), the operation of the controller 5 returns to step S1. That is, the first operation and the second operation are repeatedly executed until the termination condition is satisfied, whereby supply and discharge of the electrolyte to the electrolyte chamber 25, supply of water to the cathode chamber 26 and discharge of water (alkaline water) are performed. And intermittently.

  As the end condition, for example, various conditions such as that the user gives an instruction to end the operation by operating a button or the like, or that steps S1 to S4 have been executed a predetermined number of times can be adopted. The user inputs the amount of water in the aquarium 60, the concentration of acidic water to be generated or the amount of alkaline water to the controller 5, and the controller 5 determines the number of repetitions of steps S1 to S4 based on this input value. The end condition may be that steps S1 to S4 have been executed the number of times.

  When the end condition is satisfied (YES in step S5), the controller 5 ends the electrolysis operation. In this case, the controller 5 may notify the end of the electrolysis operation by sound output or lighting of an indicator lamp.

(Example)
An embodiment of the electrolyzed water generating apparatus 1 described above will be described.
In this embodiment, the capacity of the electrolyte chamber 25 is 10 ml, and the capacity of the cathode chamber 26 is 100 ml. The current applied to the anode 21 and the cathode 22 is 2 A, and the water supply timing is when 10 minutes have elapsed since the start of the energization. Further, the amount (first specified amount) of the electrolyte supplied to and discharged from the electrolyte chamber 25 in step S4 is 10 ml, the same as the volume of the electrolyte chamber 25, and the water supplied to and discharged from the cathode chamber 26 The amount of alkaline water (second specified amount) is 100 ml, the same as the capacity of the cathode chamber 26.

  In this condition, when hypochlorous acid water having an effective chlorine concentration of 50 ppm is generated in the water tank 60, steps S1 to S4 may be executed once for 10 l of water in the water tank 60. That is, when 10 l of water is stored in the water tank 60, steps S1 to S4 are executed once, and when 1 t of water is stored in the water tank 60, steps S1 to S4 are executed 100 times. The second tank 4 stores a pH 13 sodium hydroxide aqueous solution having excellent detergency.

  With the configuration of this embodiment, a very small amount of water can be changed into electrolyzed water by the extremely small electrolysis unit 2. Furthermore, when the water supply timing comes, the concentration of the electrolytic solution in the electrolytic solution chamber 25 is reduced to 8% (concentration of about 30% of the saturated concentration 26%), and salt that is wasted even if this electrolytic solution is drained. Few.

  In addition, if the capacity of the electrolytic solution chamber 25 is increased, a large amount of electrolytic water (acidic water or alkaline water) can be generated without replacing the electrolytic solution, but on the other hand, the electrolytic solution chamber 25 becomes large and consequently. The electrolysis unit 2 is increased in size. Furthermore, when the capacity of the water tank 60 is increased to, for example, 10 l or more, the electrolytic solution chamber 25 is also enlarged correspondingly, and the water quality of the electrolytic solution chamber 25 or the cathode chamber 26 that is in a stationary state during electrolysis changes extremely. Or gas stagnates. For this reason, the capacity of the electrolytic solution chamber 25 is desirably about 20 ml, and at most 200 ml or less. Furthermore, if the volume of the electrolyte chamber 25 is 2 ml or less, the flowing water pressure at the time of water supply increases, and water cannot be supplied by the head pressure of the first tank 3. Therefore, practically, it is desirable that the volume of the electrolytic solution chamber 25 be about 2 ml or more and 200 ml or less.

  In the present embodiment, the case where the electrolyte solution in the electrolyte chamber 25 is replaced 100% in step S4 is exemplified, but the present invention is not limited to this, and the amount of the electrolyte solution to be replaced (the first specified amount) is the capacity of the electrolyte chamber 25. What is necessary is just to set in the range of about 30% or more and 150% or less. This is because if the amount to be replaced is less than 30%, the salt content of the electrolyte solution may be exhausted before the timing of water supply, and if the amount to be replaced is too large, the electrolyte solution is wasted. The numerical value of 150% has a margin of more than 100% in order to surely replace the electrolyte in the electrolyte chamber 25 having a very small capacity.

  In the first embodiment described above, since the electrolyte solution in the electrolyte chamber 25 and the water in the cathode chamber 26 are stationary during electrolysis, the pressure in the electrolyte chamber 25 and the cathode chamber 26 hardly varies. . Furthermore, since the flow path including the electrolytic solution chamber 25 is non-circulating, it prevents the ph of the electrolytic solution from changing every time it undergoes electrolysis and preventing unwanted by-products generated by the electrolysis from being mixed into the electrolytic solution. In addition, the electrolysis characteristics can be stabilized and electrolyzed water having a desired water quality can be obtained.

  Moreover, since the electrolytic solution in the electrolytic solution chamber 25 is intermittently changed under the control of the controller 5, it is not necessary for the user to change the electrolytic solution manually, and the electrolytic solution can be generated efficiently.

  In the example of FIG. 1, the first tank 3 is located above the water tank 60 in the gravity direction, and the first supply pipe 31 that connects the first tank 3 and the electrolyte chamber 25 is provided with an electromagnetic valve or the like. For this reason, during electrolysis, the water pressure applied to the first diaphragm 23 from the electrolyte chamber 25 side becomes larger than the water pressure applied to the first diaphragm 23 from the water tank 60 side. Further, the electromagnetic valve 7 is provided in the second supply pipe 41 that connects the cathode chamber 26 and the water supply source WS, and the electromagnetic valve 7 is closed when the anode 21 and the cathode 22 are energized. The water pressure applied to the second diaphragm 24 from the liquid chamber 25 side becomes larger than the water pressure applied to the second diaphragm 24 from the cathode chamber 26 side. Thus, by setting the electrolyte chamber 25 to a positive pressure with respect to the water tank 60 and the cathode chamber 26, the electrolyte moves to the water tank 60 via the first diaphragm 23 and enters the cathode chamber 26 via the second diaphragm 24. The amount of electrolyte that moves can be increased, and the efficiency of electrolysis can be increased.

  In addition to the above description, various preferred actions can be obtained from this embodiment.

(Second Embodiment)
A second embodiment will be described. Elements that are the same as or similar to those in the first embodiment are denoted by the same reference numerals, and redundant descriptions may be omitted.

  FIG. 3 is a diagram schematically illustrating the electrolyzed water generating device 1 according to the second embodiment. The electrolyzed water generating apparatus 1 does not include the second tank 4, the second supply pipe 41, the second discharge pipe 42, and the electromagnetic valve 7, and is pumped in the middle of the first supply pipe 31 instead of the electromagnetic valve 6. 8 is different from that shown in FIG. The pump 8 is connected to the controller 5 and is operated and stopped under the control of the controller 5. When the pump 8 is in operation, for example, a rotating body included in the pump 8 rotates and the electrolytic solution in the first tank 3 is sent to the electrolytic solution chamber 25. On the other hand, when the pump 8 is stopped, the rotating body stops and the first tank 3 side and the electrolyte chamber 25 side of the first supply pipe 31 are shut off. The pump 8 may be provided in the first discharge pipe 32.

  Further, the electrolysis unit 2 shown in FIG. 3 is different from that shown in FIG. 1 in that the second diaphragm 24 and the cathode chamber 26 are not provided. The cathode 22 is disposed, for example, so that one main surface is close to the housing 20. The electrolyte chamber 25 corresponds to a space defined by the first diaphragm 23 and the housing 20.

  In the configuration of FIG. 3, hydrogen gas and alkaline water are generated in the electrolytic solution chamber 25 during electrolysis. For example, the outlet of the first discharge pipe 32 is open, and the hydrogen gas generated in the electrolyte chamber 25 is always vented from the first discharge pipe 32. If the pump 8 is provided in the 1st supply pipe 31, this vent will not be prevented. Alkaline water generated in the electrolyte chamber 25 is discharged through the first discharge pipe 32.

  Also in this embodiment, the 1st supply pipe 31, the electrolyte solution chamber 25, and the 1st discharge pipe 32 form the non-circulation flow path of an electrolyte system. Further, the pump 8 functions as a liquid feeding device for flowing a liquid (electrolytic solution) through this flow path. However, instead of the pump 8, another liquid delivery device such as an electromagnetic valve may be used.

  As in the first embodiment, the controller 5 performs the electrolysis operation shown in the flowchart of FIG. In the present embodiment, the controller 5 operates the pump 8 only for the time during which the first specified amount of electrolyte flows through the flow path including the first supply pipe 31, the electrolyte chamber 25, and the first discharge pipe 32, The operation of step S4 is realized.

  Even if it is the structure of this embodiment, the effect | action similar to 1st Embodiment can be acquired. Furthermore, the configuration of the electrolyzed water generating apparatus 1 can be simplified by not providing the cathode chamber 26, the second supply pipe 41, the second discharge pipe 42, and the second tank 4 as in the present embodiment.

(Third embodiment)
A third embodiment will be described. Elements that are the same as or similar to those in the first and second embodiments are denoted by the same reference numerals, and redundant descriptions may be omitted.

  FIG. 4 is a diagram schematically illustrating the electrolyzed water generating device 1 according to the third embodiment. This electrolyzed water generating apparatus 1 does not include the second tank 4, the second supply pipe 41, the second discharge pipe 42, and the electromagnetic valve 7 as in the second embodiment, and the first supply instead of the electromagnetic valve 6. 1 is different from that shown in FIG. 1 in that the electromagnetic valve 9 is provided in the middle of the pipe 31. The electromagnetic valve 9 is connected to the controller 5, and is switched between a closed state in which the first supply pipe 31 is closed and an open state in which the first supply pipe 31 is opened under the control of the controller 5. The first supply pipe 41 is connected to a water supply source WS that is a water supply pipe to which water pressure is applied, such as a water pipe. The electromagnetic valve 9 may be provided in the first discharge pipe 32.

  Furthermore, the electrolysis unit 2 shown in FIG. 4 does not include the second diaphragm 24 and the cathode chamber 26 as in the second embodiment, and electrolyzes water supplied from the water supply source WS via the first supply pipe 31. It differs from what was shown in FIG. 1 by the point provided with the storage chamber 27 changed into a liquid.

  The storage chamber 27 stores a solid electrolyte, for example, a solid salt. In the example of FIG. 4, the storage chamber 27 is provided inside the housing 20. For example, it is possible to easily fill the solid salt with the storage chamber 27 having a structure that can be opened and closed with respect to the housing 20, detachable, or withdrawable.

  The storage chamber 27 and the electrolyte chamber 25 are partitioned by a filter 28 (mesh). The filter 28 allows the liquid to pass through while preventing the electrolyte in the storage chamber 27 from moving to the electrolyte chamber 25 while remaining solid. As such a filter 28, various types can be used, for example, one in which a wire body such as a metal wire is knitted planarly or three-dimensionally, or one in which a plurality of small holes are formed in a plate material such as a metal plate. .

  The housing 20 has an opening 20c (through hole) that allows the first supply pipe 31 and the storage chamber 27 to communicate with each other on the wall (bottom wall) on the first end 20a side. In the example of FIG. 4, a check valve 29 is provided between the opening 20 c and the first supply pipe 31. The check valve 29 includes a movable member 29a that allows the liquid flowing in the direction from the first supply pipe 31 to the storage chamber 27 to pass therethrough and blocks the liquid flowing in the reverse direction. As the movable member 29a, for example, a rubber diaphragm or a ball can be used.

  When the electromagnetic valve 9 is in the closed state, the water from the water supply source WS does not flow through the first supply pipe 31 and the electrolytic solution in the electrolytic solution chamber 25 is not discharged. On the other hand, when the electromagnetic valve 9 is in the open state, water from the water supply source WS flows into the storage chamber 27 through the first supply pipe 31 and the check valve 29. Solid water dissolves in the water flowing into the storage chamber 27 to form an electrolytic solution. The electrolytic solution passes through the filter 28 and flows into the electrolytic solution chamber 25, and the electrolytic solution in the electrolytic solution chamber 25 flows into the first discharge pipe. To 32.

  By providing the check valve 29, movement of the electrolyte from the electrolyte chamber 25 and the storage chamber 27 to the first supply pipe 31 is prevented. Accordingly, the electrolytic solution does not reach the water supply source WS and the pipes and the like related to the water supply source WS are not corroded. Furthermore, it is not necessary to take countermeasures against corrosion on the first supply pipe 31 and the electromagnetic valve 9, and the manufacturing cost of the electrolyzed water generating apparatus 1 can be reduced.

  Also in this embodiment, the 1st supply pipe 31, the electrolyte solution chamber 25, and the 1st discharge pipe 32 form the non-circulation flow path of an electrolyte system. Further, the electromagnetic valve 9 functions as a liquid feeding device that allows liquid (water and electrolyte) to flow through the flow path. However, instead of the electromagnetic valve 9, another liquid feeding device such as a pump provided in the first supply pipe 31 or the first discharge pipe 32 may be used.

  As in the first embodiment, the controller 5 performs the electrolysis operation shown in the flowchart of FIG. In the present embodiment, the controller 5 opens the electromagnetic valve 9 for a time during which the first specified amount of electrolyte flows into the electrolyte chamber 25 and the first specified amount of electrolyte is discharged from the electrolyte chamber 25. Thus, the operation of step S4 is realized.

  Even in the configuration of the present embodiment, the same operation as in the first and second embodiments can be obtained. Furthermore, the structure of the electrolyzed water generating apparatus 1 can be further simplified by not providing the first tank 3 as in the present embodiment.

  In the electrolyzed water generating apparatus 1 having substantially the same conditions as the above-described embodiment except for the configuration related to the cathode chamber 26, when 20 g of solid salt is accommodated in the accommodating chamber 27, for example, approximately 200 l of electrolyzed water (hypochlorous acid water) is used. ) Can be generated. In order to generate more electrolyzed water by filling the solid salt once, the capacity of the storage chamber 27 may be increased.

(Fourth embodiment)
A fourth embodiment will be described. Elements that are the same as or similar to those in the first to third embodiments are denoted by the same reference numerals, and redundant descriptions may be omitted.

  FIG. 5 is a diagram schematically illustrating an electrolyzed water generating device 1 according to the fourth embodiment. Similar to the third embodiment, the electrolyzed water generating apparatus 1 does not include the second tank 4, the second supply pipe 41, the second discharge pipe 42, and the electromagnetic valve 7. 1 is different from that shown in FIG. 1 in that an electromagnetic valve 9 is provided in the middle of the supply pipe 31. The first tank 3 stores water instead of the electrolytic solution. Further, the electrolyzed water generating apparatus 1 includes a storage chamber unit 100 in the middle of the first supply pipe 31. The first supply pipe 31 includes an upstream portion 31 a on the upstream side (first tank 3 side) of the storage chamber unit 100 and a downstream portion 31 b on the downstream side (electrolyte chamber 25 side) of the storage chamber unit 100.

  The storage chamber unit 100 includes a housing 102 that internally forms a storage chamber 101 that stores a solid electrolyte, for example, a solid salt. The housing 102 is provided with a first filter 103 and a second filter 104. The storage chamber 101 is connected to the first tank 3 via the first filter 103 and the upstream part 31 a of the first supply pipe 31, and electrolyzed via the second filter 104 and the downstream part 31 b of the first supply pipe 31. The liquid chamber 25 is connected. The first filter 103 allows the liquid to pass while preventing the electrolyte in the storage chamber 101 from moving to the upstream portion 31a of the first supply pipe 31 while remaining solid. The second filter 104 prevents the electrolyte in the storage chamber 101 from moving to the downstream portion 31b of the first supply pipe 31 while remaining solid, while allowing the liquid to pass therethrough. Examples of the first filter 103 and the second filter 104 include a material obtained by knitting a wire body such as a metal wire planarly or three-dimensionally, or a material obtained by opening a plurality of small holes in a plate material such as a metal plate. Various types are available.

  In the example of FIG. 5, a check valve 105 is provided between the first filter 103 and the upstream portion 31 a of the first supply pipe 31. The check valve 105 includes a movable member 105a that allows the liquid flowing in the direction from the upstream portion 31a of the first supply pipe 31 to the storage chamber 101 to pass therethrough and blocks the liquid flowing in the reverse direction. As the movable member 105a, for example, a rubber diaphragm or a ball can be used.

  The upstream portion 31a (and the check valve 105) of the first supply pipe 31 and the housing 102 are detachably connected through, for example, a joint structure. Similarly, the downstream portion 31b of the first supply pipe 31 and the housing 102 are detachably connected through, for example, a joint structure.

  When the solenoid valve 9 is in the closed state, the water from the first tank 3 does not flow through the first supply pipe 31 and the electrolyte in the electrolyte chamber 25 is not discharged. On the other hand, when the electromagnetic valve 9 is in the open state, water from the first tank 3 is caused by the head pressure via the upstream portion 31 a of the first supply pipe 31, the check valve 105, and the first filter 103. Flow into. The water flowing into the storage chamber 101 dissolves a solid salt to become an electrolytic solution. The electrolytic solution passes through the second filter 104 and the downstream portion 31b of the first supply pipe 31 and flows into the electrolytic solution chamber 25. The electrolytic solution in the electrolytic solution chamber 25 flows out to the first discharge pipe 32.

  Providing the check valve 105 prevents the electrolyte from moving from the storage chamber 101 to the upstream portion 31 a of the first supply pipe 31. Therefore, it is not necessary to take countermeasures against corrosion on the first tank 3, the upstream portion 31 a of the first supply pipe 31, the electromagnetic valve 9, etc., and the manufacturing cost of the electrolyzed water generating device 1 can be reduced.

  Also in this embodiment, the 1st supply pipe 31 (upstream part 31a and downstream part 31b), the electrolyte chamber 25, and the 1st discharge pipe 32 form the non-circulation flow path of an electrolyte system. Further, the electromagnetic valve 9 functions as a liquid feeding device that allows liquid (water and electrolyte) to flow through the flow path. However, instead of the electromagnetic valve 9, another liquid feeding device such as a pump provided in the first supply pipe 31 or the first discharge pipe 32 may be used.

  As in the first embodiment, the controller 5 performs the electrolysis operation shown in the flowchart of FIG. In the present embodiment, the controller 5 opens the electromagnetic valve 9 for a time during which the first specified amount of electrolyte flows into the electrolyte chamber 25 and the first specified amount of electrolyte is discharged from the electrolyte chamber 25. Thus, the operation of step S4 is realized.

  Even in the configuration of the present embodiment, the same operation as in the first to third embodiments can be obtained. Furthermore, by making the electrolysis unit 2 and the storage chamber unit 100 independent, it is possible to configure the electrolyzed water generating apparatus 1 by appropriately combining the electrolysis unit 2 and the storage chamber unit 100 having an optimum capacity.

  Moreover, in order to produce | generate electrolyte solution using the water of the 1st tank 3, the electrolyzed water generating apparatus 1 can be installed, without receiving restrictions, such as water supply equipment.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the 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.

  For example, in the configuration of the first embodiment, water is stored in the first tank 3 instead of the electrolytic solution, and the storage chamber 27 disclosed in the third embodiment is provided for the electrolysis unit 2, or the first supply pipe 31 On the way, the storage chamber unit 100 disclosed in the fourth embodiment may be provided.

  Moreover, in the structure of 1st Embodiment, you may form the flow path of the electrolyte solution system | strain using the pump 8 disclosed in 2nd Embodiment, or the water supply source WS and electromagnetic which were disclosed in 3rd Embodiment. You may form the flow path of the electrolyte solution system | strain using the valve 9. FIG. In addition, the flow path disclosed in each embodiment and the electrolysis unit 2 can be appropriately combined.

Claims (21)

A first electrode; a second electrode opposite to the first electrode; a first diaphragm disposed between the first electrode and the second electrode; and an electrolyte solution for accommodating the first diaphragm on a wall surface. An electrolytic unit that includes an electrolytic solution chamber that does not include the first electrode as a part, is disposed in a container that contains water, and generates electrolytic water from the water in the container;
A non-circulating flow path including the electrolyte chamber;
A liquid feeding device for flowing a liquid through the flow path;
A control device for controlling the liquid feeding device;
Equipped with a,
The control device includes:
A first operation of supplying the electrolyte solution to the electrolyte chamber by the liquid delivery device and stopping discharging the electrolyte solution from the electrolyte chamber and energizing the first electrode and the second electrode;
A second operation of supplying a prescribed amount of electrolyte to the electrolyte chamber by the liquid delivery device and discharging the prescribed amount of electrolyte from the electrolyte chamber;
An electrolyzed water generator that alternately executes The electrolyte supplied to the electrolyte chamber is a chloride aqueous solution,
The electrolyzed water is hypochlorous acid water,
The electrolyzed water generating apparatus according to claim 1. The first electrode is an anode, the second electrode is a cathode;
The electrolysis unit is
A second diaphragm disposed between the first diaphragm and the second electrode;
A cathode chamber partitioned from the electrolyte chamber by the second diaphragm;
Further comprising
The electrolyzed water generating apparatus according to claim 1 or 2. The second electrode is disposed inside the electrolyte chamber;
The electrolyzed water generating apparatus according to claim 1 or 2. The first diaphragm is a multi-membrane membrane having water permeability,
The water pressure applied to the first diaphragm from the electrolyte chamber side is greater than the water pressure applied to the first diaphragm from the container side,
The electrolyzed water generating apparatus according to any one of claims 1 to 4. Wherein the controller, prior SL during the execution of the first operation, according to the the concentration of the electrolyte in the electrolytic solution of the electrolyte chamber is reduced to a specified value defined in the range of 20% or more and 80% or less of the saturation concentration And executing the second operation,
The electrolyzed water generating apparatus according to any one of claims 1 to 5. Wherein the controller, prior SL during the execution of the first operation, in response to the potential difference between the first electrode and the second electrode reaches a predetermined value, performing the second operation,
The electrolyzed water generating apparatus according to any one of claims 1 to 5. The specified amount is in the range of 30% to 150% of the capacity of the electrolyte chamber.
The electrolyzed water generating apparatus according to any one of claims 1 to 7 . The volume of the electrolyte chamber is in the range of 2 ml to 200 ml,
The electrolyzed water generating apparatus according to any one of claims 1 to 8. A tank for storing the electrolyte,
The flow path is
A supply pipe for supplying an electrolyte from the tank to the electrolyte chamber;
A discharge pipe for discharging the electrolyte from the electrolyte chamber;
including,
The electrolyzed water generating apparatus according to any one of claims 1 to 9. The liquid feeding device is a valve that switches between a closed state that closes the discharge pipe and an open state that opens the discharge pipe,
The tank is provided at a higher position in the direction of gravity than the outlet of the discharge pipe.
The electrolyzed water generating apparatus according to claim 10. The liquid feeding device is a pump provided in the supply pipe or the discharge pipe.
The electrolyzed water generating apparatus according to claim 10. The flow path is
A supply pipe connecting the water supply source and the electrolysis unit;
A discharge pipe for discharging the electrolyte from the electrolyte chamber;
Including
A storage chamber that stores the electrolyte and dissolves the electrolyte in water from the water supply source that flows through the supply pipe to generate an electrolytic solution that is supplied to the electrolytic chamber;
The electrolyzed water generating apparatus according to any one of claims 1 to 9. The storage chamber is provided in the electrolysis unit,
The electrolyzed water generating apparatus according to claim 13. The storage chamber is provided in the middle of the supply pipe.
The electrolyzed water generating apparatus according to claim 13. The water supply source is a water supply pipe through which water under pressure flows,
The liquid feeding device is a valve that switches between a closed state that closes the supply pipe or the discharge pipe and an open state that opens the supply pipe or the discharge pipe.
The electrolyzed water generating apparatus according to any one of claims 13 to 15. The water supply source is a tank for storing water,
The liquid feeding device is a valve that switches between a closed state that closes the supply pipe or the discharge pipe and an open state that opens the supply pipe or the discharge pipe,
The tank is provided at a higher position in the direction of gravity than the outlet of the discharge pipe.
The electrolyzed water generating apparatus according to any one of claims 13 to 15. The water supply source is a tank for storing water,
The liquid feeding device is a pump provided in the supply pipe or the discharge pipe.
The electrolyzed water generating apparatus according to any one of claims 13 to 15. Further comprising the container,
The electrolyzed water generating apparatus according to any one of claims 1 to 18.   The electrolysis unit further includes a housing containing the electrolyte chamber therein,
  The first electrode is in contact with water in the container;
  The second electrode is disposed in a region surrounded by the electrolyte chamber and the casing, and does not contact water in the container.
  The electrolyzed water generating apparatus according to any one of claims 1 to 19. A first electrode; a second electrode opposite to the first electrode; a first diaphragm disposed between the first electrode and the second electrode; and an electrolyte solution for accommodating the first diaphragm on a wall surface. An electrolytic unit including an electrolytic solution chamber that does not include the first electrode as a part, and is disposed in a container containing water;
Supply of liquid to the electrolytic solution chamber by a liquid feeding device that causes liquid to flow through a non-circulating channel including the electrolytic solution chamber in a state where the electrolytic unit is disposed in the container, and from the electrolytic solution chamber A first operation of generating electrolyzed water from water in the container by energizing the first electrode and the second electrode,
Supplying a prescribed amount of liquid to the electrolyte chamber by the liquid feeding device, and performing a second operation of discharging the prescribed amount of electrolyte from the electrolyte chamber;
Including
An electrolyzed water generating method, wherein the first operation and the second operation are alternately repeated.

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