Electrolytic water generator and its control method

Abstract

To provide an electrolytic water generator capable of quickly recovering a dissolved hydrogen concentration of electrolytic water in a stand-by state.SOLUTION: An electrolytic water generator 1 includes an electrolysis unit 3, a tank 5, a circulation channel 6, a pump 7, and a control part 8 for controlling the electrolysis unit 3 and pump 7. The control part 8 has, as a control mode, a standby mode in which electrolytic water is kept in the tank 5 without electrolysis in the electrolysis unit 3, and a recovery mode in which the electrolytic water is electrolyzed in the electrolysis unit 3 while the pump 7 is driven to circulate the electrolytic water to increase the dissolved hydrogen concentration of the electrolytic water in the tank 5. The control part 8 has a measurement part 81 to measure the non-electrolysis time in the standby mode, a determination part 82 to determine the output of the electrolysis unit 3 in the recovery mode, and a drive part 83 to operate the electrolysis unit 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electrolytic water generating device. [Background technology]

[0002] In recent years, dialysis treatment using electrolyzed water generated by an electrolyzed water generator has been attracting attention. For example, it is known that electrolyzed hydrogen water, which contains dissolved hydrogen gas generated by electrolyzing water, contributes to reducing oxidative stress in patients (for example, see Patent Document 1 below). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-139475 A Summary of the Invention [Problem to be solved by the invention]

[0004] In large hospitals and the like, dialysis treatment is performed simultaneously on a large number of patients, so electrolytic water generating devices are provided with tanks for storing large amounts of electrolytic water.

[0005] On the other hand, dialysis treatment is not usually performed all the time, and there are times when the electrolyzed water in the tank is not consumed. During such times, in order to prevent an excessive increase in the dissolved hydrogen concentration of the electrolyzed water, the circulation of the electrolyzed water between the tank and the electrolysis unit and the electrolysis in the electrolysis unit are stopped, and the electrolyzed water in the tank remains in the tank and waits without electrolysis.

[0006] However, as the dissolved hydrogen gas escapes from the electrolytic water in the standby state, the dissolved hydrogen concentration gradually decreases.

[0007] The present invention has been devised in consideration of the above-mentioned circumstances, and its main object is to provide an electrolytic water generating device that can quickly restore the dissolved hydrogen concentration of electrolytic water in a standby state. [Means for solving the problem]

[0008] The present invention is an electrolytic water generating device, an electrolysis unit for generating electrolyzed water; A tank for storing the electrolyzed water generated by the electrolysis unit; a circulation water channel for circulating the electrolyzed water between the tank and the electrolysis unit; A pump provided in the circulating water passage; a control unit for controlling the electrolysis unit and the pump, The control unit has the following control modes: a standby mode in which electrolysis is not performed in the electrolysis unit and the electrolytic water is retained in the tank; a recovery mode for electrolyzing the electrolyzed water in the electrolysis unit while driving the pump to circulate the electrolyzed water in the tank, thereby increasing the dissolved hydrogen concentration of the electrolyzed water in the tank; The control unit includes a measurement unit that measures the non-electrolysis time elapsed in the standby mode, a determination unit that uses at least the non-electrolysis time to determine the output of the electrolysis unit in the recovery mode, and a drive unit that operates the electrolysis unit at the determined output. Effect of the Invention

[0009] In the electrolyzed water generating device of the present invention, the control unit determines the output of the electrolysis unit in the recovery mode based on the non-electrolysis time elapsed in the standby mode, thereby enabling the dissolved hydrogen concentration of the electrolyzed water in the standby state to be quickly restored. [Brief description of the drawings]

[0010] [Figure 1] 1 is a block diagram showing a schematic configuration of an electrolytic water generating device according to the present invention. [Diagram 2] FIG. 2 is a diagram illustrating a configuration of an electrolysis unit in FIG. [Diagram 3] 2 is a block diagram showing the configuration of a control unit in FIG. 1. [Figure 4] 1 is a flowchart showing the steps of the electrolyzed water generating method of the present invention. [Diagram 5] 3 is a flowchart showing the procedure of the recovery mode of FIG. 2. [Figure 6] FIG. 2 is a block diagram of a modified example of the electrolyzed water generating device of FIG. [Figure 7] FIG. 7 is a block diagram of a modified example of the electrolyzed water generating device of FIG. [Figure 8] FIG. 8 is a block diagram showing the configuration of a control unit in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 shows a schematic configuration of an electrolyzed water generating device 1 of this embodiment. The electrolyzed water generating device 1 is a device for generating electrolyzed water, and is connected to a dialysis fluid preparation device 100 for preparing dialysis fluid. The electrolyzed water generating device 1 supplies the generated electrolyzed water to the dialysis fluid preparation device 100.

[0012] The electrolytic water generating device 1 includes an electrolysis unit 3 for generating electrolytic water, a tank 5 for storing the electrolytic water, a circulating water channel 6 for circulating the electrolytic water, a pump 7 provided in the circulating water channel, and a control unit 8 for controlling the electrolysis unit 3 and the like.

[0013] FIG 2 shows the electrolysis unit 3. The electrolysis unit 3 includes an electrolytic cell 4. When the dialysis fluid prepared by the dialysis fluid preparation device 100 is used for dialysis of multiple patients, it is preferable that the electrolysis unit 3 is configured to include multiple electrolytic cells 4, as shown in FIG 2. The multiple electrolytic cells 4 are connected in parallel to each other as flow paths. By operating such multiple electrolytic cells 4 simultaneously, a large amount of electrolyzed water is rapidly produced.

[0014] The electrolytic cell 4 includes an electrolysis chamber 40, an anode power supply 41, a cathode power supply 42, and a diaphragm 43. The electrolysis chamber 40 is divided by the diaphragm 43 into an anode chamber 40a in which the anode power supply 41 is disposed, and a cathode chamber 40b in which the cathode power supply 42 is disposed. Pretreated water is supplied to the anode chamber 40a and the cathode chamber 40b, for example, via a bifurcated flow path (not shown).

[0015] The raw water is generally tap water, but other water sources such as well water and groundwater can also be used. The raw water to be electrolyzed is supplied to the anode chamber 40a and the cathode chamber 40b. The raw water is softened or otherwise treated before being supplied to the anode chamber 40a and the cathode chamber 40b.

[0016] The voltage applied between the anode power supply 41 and the cathode power supply 42 is controlled by the control unit 8. The control unit 8 feedback controls the electrolysis voltage applied to the anode power supply 41 and the cathode power supply 42 so that the electrolysis current supplied to the anode power supply 41 and the cathode power supply 42 becomes a preset desired value. For example, if the electrolysis current is excessively large, the control unit 8 reduces the voltage, and if the electrolysis current is too small, the control unit 8 increases the voltage. This allows the electrolysis current to be appropriately controlled.

[0017] Of the electrolyzed water electrolyzed in the electrolytic cell 4, the electrolyzed water produced in the cathode chamber 40b is sent to the tank 5 as cathode water. On the other hand, the electrolyzed water produced in the anode chamber 40a is discharged to the outside of the electrolyzed water production device 1 as anode water.

[0018] Water is electrolyzed in the electrolytic cell 4, whereby oxygen gas is generated in the anode chamber 40a and hydrogen gas is generated in the cathode chamber 40b.

[0019] The oxygen gas generated in the anode chamber 40a dissolves in the electrolytic water in the anode chamber 40a, is taken out of the anode chamber 40a as anode water, and is discharged to the outside of the electrolytic water generating apparatus 1.

[0020] The hydrogen gas generated in the cathode chamber 40b dissolves in the electrolytic water in the cathode chamber 40b, is extracted as cathode water from the cathode chamber 40b, and is sent to the tank 5. That is, the cathode water sent from the cathode chamber 40b to the tank 5 is electrolyzed hydrogen water in the cathode chamber 40b, into which hydrogen gas has been dissolved.

[0021] In Fig. 1, the tank 5 stores the electrolyzed water supplied from the electrolysis unit 3. This makes it possible to supply a large amount of electrolyzed water to the dialysis fluid preparation apparatus 100 at one time. When the electrolyzed water is to be used for dialysis treatment, the electrolyzed water generated in the cathode chamber 40b is supplied to the tank 5. When the electrolyzed water is to be used for purposes other than dialysis treatment, the electrolyzed water generated in the anode chamber 40a may be supplied to the tank 5.

[0022] The circulation water channel 6 circulates the electrolyzed water between the tank 5 and the electrolysis unit 3. A pump 7 is provided in the circulation water channel 6. The pump 7 is controlled by the control unit 8 to drive the electrolyzed water in the circulation water channel 6. As a result, the electrolyzed water supplied from the electrolysis unit 3 to the tank 5 is driven from the tank 5 to the electrolysis unit 3, and circulates in the circulation water channel 6.

[0023] When the electrolyzed water circulates through the circulating water channel 6, the control unit 8 drives the electrolysis unit 3 to perform electrolysis, thereby increasing the dissolved hydrogen concentration in the electrolyzed water. For example, when preparing for dialysis treatment, before starting the operation of the dialysis fluid preparation device 100, the dissolved hydrogen concentration in the electrolyzed water can be sufficiently increased by additionally performing electrolysis while circulating the electrolyzed water stored in the tank 5.

[0024] The control unit 8 controls each part of the electrolyzed water generating device 1. The control unit 8 has, for example, a CPU (Central Processing Unit) that executes various arithmetic processing, information processing, etc., and a memory that stores programs that control the operation of the CPU and various information. The various functions of the control unit 8 are realized by the CPU, the memory, and the programs.

[0025] The control unit 8 of this embodiment has, as control modes for the electrolyzed water generating device 1, a standby mode and a recovery mode.

[0026] The standby mode is a mode in which electrolysis is not performed in the electrolysis unit 3 and electrolyzed water is retained in the tank 5. For the convenience of the patient and the hospital, there is usually some waiting time during dialysis treatment. During the waiting time, the electrolyzed water generating device 1 switches to the standby mode and waits. If the standby mode continues for a long period of time, the dissolved hydrogen concentration of the electrolyzed water in the tank 5 gradually decreases. For this reason, the recovery mode is executed as necessary.

[0027] The recovery mode is a mode for recovering the dissolved hydrogen concentration that has decreased in the standby mode. In the recovery mode, the pump 7 is driven to circulate the electrolytic water in the tank 5, while the electrolytic water is electrolyzed in the electrolysis unit 3. This allows the dissolved hydrogen concentration of the electrolytic water in the tank 5 to be recovered to a desired level.

[0028] The dialysis fluid preparation device 100 is a device for preparing dialysis fluid by mixing a dialysis base agent with electrolyzed water supplied from the electrolyzed water generating device 1. The dialysis base agent to be mixed with the electrolyzed water may be in liquid form or in powder form. The tank 5 constituting the electrolyzed water generating device 1 is connected to the dialysis fluid preparation device 100 so as to be able to supply electrolyzed water. In this embodiment, a water channel 9 connecting the tank 5 and the dialysis fluid preparation device 100 extends from the electrolyzed water generating device 1.

[0029] The dialysis fluid prepared by the dialysis fluid preparation device 100 is sent to a dialysis device (not shown). The dialysis device includes a dialysis fluid supply device and a dialyzer. The dialysis fluid supply device sends the dialysis fluid supplied from the dialysis fluid preparation device 100 to the dialyzer. The dialyzer is an artificial kidney including a dialysis membrane composed of a porous membrane such as a hollow fiber membrane, and applies the dialysis fluid supplied from the dialysis fluid preparation device 100 through the dialysis membrane to the blood of a patient undergoing dialysis treatment to remove waste products and water from the blood.

[0030] The dialysis fluid is prepared immediately before the dialysis treatment. On the other hand, the electrolytic water used for preparing the dialysis fluid is generated in advance, for example, when the hospital opens, and is stored in the tank 5 until the dialysis treatment is started. During this time, the control unit 8 makes the electrolytic water generating device 1 wait in the above-mentioned standby mode. After that, the control unit 8 restores the dissolved hydrogen concentration that has decreased in the standby mode in the recovery mode as necessary. For example, if the time that has passed in the standby mode is short, there is no decrease in the dissolved hydrogen concentration, so there is no need to switch to the recovery mode. However, if the time that has passed in the standby mode is long, a decrease in the dissolved hydrogen concentration occurs, so the mode is switched to the recovery mode.

[0031] Fig. 3 shows the configuration of the control unit 8. The control unit 8 includes a measurement unit 81 that measures the non-electrolysis time elapsed in the standby mode, a determination unit 82 that determines the output of the electrolysis unit 3 in the recovery mode, and a drive unit 83 that operates the electrolysis unit 3 at the determined output. The measurement unit 81, the determination unit 82, and the drive unit 83 are realized by cooperation of the above-mentioned hardware such as the CPU and memory and a program (software), but may also be realized by a hardware circuit.

[0032] The measurement unit 81 has a function of counting time and measures the non-electrolysis time elapsed in the standby mode. The determination unit 82 determines the output of the electrolysis unit 3 in the recovery mode, using the non-electrolysis time measured by the measurement unit 81. Then, the drive unit 83 operates the electrolysis unit 3 at the output determined by the determination unit 82.

[0033] For example, when the non-electrolysis time measured by the measurement unit 81 is long, it is considered that the dissolved hydrogen concentration in the tank 5 has a strong tendency to decrease. In this case, the determination unit 82 increases the output of the electrolysis unit 3 in the recovery mode, and increases the output of the electrolysis unit 3 via the drive unit 83. This enables the dissolved hydrogen concentration of the electrolyzed water in the standby state to be quickly restored.

[0034] The output of the electrolysis unit 3 refers to the electrolysis intensity by the electrolysis unit 3, and is the electrolysis current supplied to the anode power supply 41 and the cathode power supply 42. The electrolysis current increases by increasing the electrolysis voltage applied between the anode power supply 41 and the cathode power supply 42. When the electrolysis unit 3 includes multiple electrolytic cells 4, the output is the sum of the electrolysis currents supplied to the anode power supply 41 and the cathode power supply 42.

[0035] The parameter (variable) used by the determination unit 82 when determining the output of the electrolysis unit 3 in the recovery mode is not limited to the non-electrolysis time. The determination unit 82 may determine the output of the electrolysis unit 3 in the recovery mode by taking into account the non-electrolysis time elapsed in the standby mode as well as the past electrolysis time elapsed in the recovery mode. The electrolysis time elapsed in the recovery mode is measured, for example, by the measurement unit 81. That is, the determination unit 82 may be configured to determine the output of the electrolysis unit 3 in the recovery mode based on the non-electrolysis time and the electrolysis time within a predetermined time.

[0036] More specifically, the determination unit 82 may be configured to determine the output of the electrolysis unit 3 in the recovery mode based on a difference T1-T2 between a cumulative non-electrolysis time T1 and a cumulative electrolysis time T2 within a predetermined time. The predetermined time is a time going back from the present (the time point at which the mode transitions to the recovery mode).

[0037] For example, when the difference T1-T2 is large, it is considered that the dissolved hydrogen concentration of the electrolyzed water has a strong tendency to decrease. In this case, the determination unit 82 can quickly restore the dissolved hydrogen concentration of the electrolyzed water by setting the output of the electrolysis unit 3 in the recovery mode to a high value. For example, the determination unit 82 can determine an appropriate output of the electrolysis unit 3 according to the tendency of the dissolved hydrogen concentration of the electrolyzed water to decrease by determining the output of the electrolysis unit to be proportional to the difference T1-T2.

[0038] More specifically, when the difference T1-T2=T1 (i.e., T2=0), the determination unit 82 determines the output of the electrolysis unit to be the maximum value. On the other hand, when the difference T1-T2=-T2 (i.e., T1=0), the determination unit 82 determines the output of the electrolysis unit to be the minimum value. When the difference T1-T2 is a value between -T2 and T1, the output of the electrolysis unit is determined to be a value between the minimum and maximum values.

[0039] The determination unit 82 may also be configured to determine the output of the electrolysis unit 3 in the recovery mode based on the ratio T1 / T2 of the cumulative non-electrolysis time T1 to the cumulative electrolysis time T2 within a predetermined time.

[0040] For example, when the ratio T1 / T2 is large, it is considered that the dissolved hydrogen concentration of the electrolyzed water has a strong tendency to decrease. In this case, the determination unit 82 can quickly recover the dissolved hydrogen concentration of the electrolyzed water by setting the output of the electrolysis unit 3 in the recovery mode high. For example, the determination unit 82 can determine an appropriate output of the electrolysis unit 3 in accordance with the tendency of the dissolved hydrogen concentration of the electrolyzed water to decrease by determining the output of the electrolysis unit 3 to be proportional to the ratio T1 / T2.

[0041] More specifically, when the ratio T1 / T2=∞ (i.e., T2=0), the determination unit 82 determines the output of the electrolysis unit to be the maximum value. On the other hand, when the ratio T1 / T2=0 (i.e., T1=0), the determination unit 82 determines the output of the electrolysis unit to be the minimum value. When the ratio T1 / T2 is a value between 0 and ∞, the output of the electrolysis unit is determined to be a value between the minimum value and the maximum value.

[0042] The determination unit 82 may also be configured to determine the output of the electrolysis unit 3 in the recovery mode based on a combination of the difference T1-T2 and the ratio T1 / T2.

[0043] Furthermore, a map correlating the cumulative electrolysis time T1 and the cumulative electrolysis time T2 with the output of the electrolysis unit 3 may be stored in advance in the memory of the controller 8, and the determination unit 82 may determine the output of the electrolysis unit 3 by referring to the map. It is desirable that the map be rewritable.

[0044] FIG. 4 shows the procedure of a control method 200 for the electrolytic water generator 1, which is a method for generating electrolytic water using the electrolytic water generator 1.

[0045] The control method 200 includes a standby mode M1 and a recovery mode M2 ​​as control modes of the control unit 8. The standby mode M1 and the recovery mode M2 ​​are executed alternately.

[0046] When the electrolytic water generator 1 receives a request signal requesting execution of the recovery mode transmitted from outside the electrolytic water generator 1 while waiting in the standby mode M1 (YES in S1), the electrolytic water generator 1 transitions to the recovery mode M2.

[0047] FIG. 5 shows the procedure of recovery mode M2.

[0048] The recovery mode M2 ​​includes a first step S10 of measuring the non-electrolysis time elapsed in the standby mode, a second step S20 of determining the output of the electrolysis unit in the recovery mode, and a third step S30 of operating the electrolysis unit at the determined output.

[0049] The first step S10 is realized by the measurement unit 81 measuring the non-electrolysis time elapsed in the standby mode M1. The second step S20 is realized by the determination unit 82 determining the output of the electrolysis unit in the recovery mode using at least the non-electrolysis time. The third step S30 is realized by the drive unit 83 operating the electrolysis unit 3 at the output determined by the determination unit 82.

[0050] In the first step S10, the measurement unit 81 may measure the electrolysis time elapsed in the recovery mode M2. This allows the determination unit 82 to determine the output of the electrolysis unit 3 in the recovery mode M2 ​​in the second step S20, taking into account not only the non-electrolysis time elapsed in the standby mode M1, but also the past electrolysis time elapsed in the recovery mode.

[0051] For example, in the second step S20, the determination unit 82 can determine the output of the electrolysis unit 3 in proportion to the difference between the cumulative non-electrolysis time T1 and the cumulative electrolysis time T2 within a predetermined time.

[0052] Furthermore, in the second step S20, the determination unit 82 can determine the output of the electrolysis unit 3 in proportion to the ratio between the cumulative non-electrolysis time T1 and the cumulative electrolysis time T2 within a predetermined time.

[0053] Furthermore, in the second step S20, the determination unit 82 may be configured to determine the output of the electrolysis unit 3 in the recovery mode based on a combination of the difference T1-T2 and the ratio T1 / T2.

[0054] Fig. 6 is a block diagram of an electrolytic water generator 1A which is a modified example of the electrolytic water generator 1 in Fig. 1. For the parts of the electrolytic water generator 1A which are not described below, the configuration of the electrolytic water generator 1 described above can be adopted.

[0055] The electrolyzed water generator 1A differs from the electrolyzed water generator 1 in that it includes a reverse osmosis device 10. The reverse osmosis device 10 is disposed between the electrolysis unit 3 and the tank 5. The reverse osmosis device 10 includes, for example, a reverse osmosis membrane module having a reverse osmosis membrane, and purifies the electrolyzed water generated in the electrolysis unit 3 by reverse osmosis treatment. Such an electrolyzed water generator 1A is also called a reverse osmosis electrolysis device.

[0056] The reverse osmosis device 10 may be disposed upstream of the electrolysis unit 3. In this embodiment, the reverse osmosis device 10 is disposed between the electrolysis unit 3 and the tank 5, so that the electrolyzed water immediately before being stored in the tank 5 is purified when it permeates through the reverse osmosis membrane.

[0057] Fig. 7 is a block diagram of an electrolytic water generator 1B which is a modified example of the electrolytic water generator 1A in Fig. 6. The configuration of the electrolytic water generator 1A described above can be adopted for the parts of the electrolytic water generator 1B which are not described below.

[0058] The electrolyzed water generator 1B is different from the electrolyzed water generator 1A in that the electrolyzed water generator 1B and the dialysis fluid preparation device 100B can communicate with each other. The form of communication may be wired or wireless. The dialysis fluid preparation device 100B includes a transmitting unit 101, and the electrolyzed water generator 1B includes a receiving unit 84.

[0059] The transmission unit 101 transmits a request signal to the control unit 8B of the electrolyzed water generating apparatus 1B to request execution of the recovery mode. For example, when the dissolved hydrogen concentration of the electrolyzed water supplied from the tank 5 of the electrolyzed water generating apparatus 1B is decreased, the dialysis fluid preparation apparatus 100B periodically transmits a request signal to the control unit 8 of the electrolyzed water generating apparatus 1B.

[0060] 8 shows the control unit 8B of the electrolyzed water generating apparatus 1B. The control unit 8B includes a receiving unit 84 that receives a request signal transmitted from the transmitting unit 101 of the dialysis solution preparation apparatus 100B. The receiving unit 84 receives the request signal and executes the recovery mode. More specifically, the receiving unit 84 transfers the received request signal to the measuring unit 81.

[0061] In the control unit 8B, the measurement unit 81 counts the number of request signals, and can measure the cumulative non-electrolysis time T1 and the cumulative electrolysis time T2 based on the number of signals.

[0062] Although the electrolytic water generating device 1 of the present invention has been described in detail above, the present invention is not limited to the above specific embodiment and may be modified and practiced in various aspects.

[0063] [Note] The present invention includes the following aspects.

[0064] [Invention 1] An electrolytic water generating device, an electrolysis unit for generating electrolyzed water; A tank for storing the electrolyzed water generated by the electrolysis unit; a circulation water channel for circulating the electrolyzed water between the tank and the electrolysis unit; A pump provided in the circulating water passage; a control unit for controlling the electrolysis unit and the pump, The control unit has the following control modes: a standby mode in which electrolysis is not performed in the electrolysis unit and the electrolytic water is retained in the tank; a recovery mode for electrolyzing the electrolyzed water in the electrolysis unit while driving the pump to circulate the electrolyzed water in the tank, thereby increasing the dissolved hydrogen concentration of the electrolyzed water in the tank; The control unit includes a measurement unit that measures the non-electrolysis time elapsed in the standby mode, a determination unit that uses at least the non-electrolysis time to determine the output of the electrolysis unit in the recovery mode, and a drive unit that operates the electrolysis unit at the determined output. [Invention 2] The measurement unit is capable of measuring the electrolysis time elapsed in the recovery mode, The electrolyzed water generating device of the present invention 1, wherein the determination unit determines the output of the electrolysis unit in the recovery mode based on the non-electrolysis time and the electrolysis time within a predetermined time. [Invention 3] The electrolyzed water generating apparatus according to the present invention 2, wherein the determination unit determines the output of the electrolysis unit in the recovery mode based on the difference between the accumulated non-electrolysis time and the accumulated electrolysis time within a predetermined time period. [Invention 4] The electrolyzed water generating apparatus according to the third aspect of the present invention, wherein the determination unit determines the output of the electrolysis unit in proportion to the difference. [Invention 5] The electrolyzed water generating apparatus according to the present invention 2, wherein the determination unit determines the output of the electrolysis unit in the recovery mode based on a ratio between the accumulated non-electrolysis time and the accumulated electrolysis time within a predetermined time period. [Invention 6] The electrolyzed water generating apparatus according to the present invention 5, wherein the determination unit determines the output of the electrolysis unit in proportion to the ratio. [Invention 7] The electrolyzed water generating apparatus according to the first aspect of the present invention, wherein a reverse osmosis device for subjecting the electrolyzed water generated by the electrolysis unit to reverse osmosis is provided between the electrolysis unit and the tank. [Invention 8] The electrolyzed water generating apparatus according to the first aspect of the present invention, wherein the tank is connected so as to be capable of supplying the electrolyzed water to a dialysis solution preparation device for preparing a dialysis solution by mixing the electrolyzed water with a dialysis base agent. [The present invention 9] The dialysis fluid preparation device includes a transmission unit that transmits a request signal to the control unit to request execution of the recovery mode, The control unit includes a receiving unit that receives the request signal and executes the recovery mode, in the electrolytic water generating device described in invention 8. [The present invention 10] A method for controlling an electrolytic water generating device, comprising: The electrolytic water generating device is an electrolysis unit for generating electrolyzed water; A tank for storing the electrolyzed water generated by the electrolysis unit; a circulation water channel for circulating the electrolyzed water between the tank and the electrolysis unit; A pump provided in the circulating water passage; a control unit for controlling the electrolysis unit and the pump, The control method includes: a standby mode in which electrolysis is not performed in the electrolysis unit and the electrolytic water is retained in the tank; a recovery mode for electrolyzing the electrolyzed water in the electrolysis unit while driving the pump to circulate the electrolyzed water in the tank, thereby increasing the dissolved hydrogen concentration of the electrolyzed water in the tank; The recovery mode is A first step of measuring a non-electrolysis time elapsed in the standby mode; a second step of determining an output of the electrolysis unit in the recovery mode using at least the non-electrolysis time; and a third step of operating the electrolysis unit at the determined power output. A method for controlling an electrolytic water generating device. [The present invention 11] The first step measures the electrolysis time elapsed in the recovery mode, The second step determines the output of the electrolysis unit in proportion to the difference between the cumulative non-electrolysis time and the cumulative electrolysis time within a predetermined time period. [The present invention 12] The first step measures the electrolysis time elapsed in the recovery mode, The second step determines the output of the electrolysis unit in proportion to the ratio of the cumulative non-electrolysis time to the cumulative electrolysis time within a predetermined time period. [Explanation of symbols]

[0065] 1: Electrolyzed water generator 1A: Electrolyzed water generator 1B: Electrolyzed water generator 3: Electrolysis unit 5: Tank 6: Circulation waterway 7: Pump 8: Control section 8B: Control section 9: Waterway 10: Reverse osmosis equipment 81: Measurement section 82: Decision section 83: Drive unit 84: Receiving unit 100: Dialysate preparation device 100B: Dialysate preparation device 101: Transmitter M1: Standby mode M2: Recovery Mode S10: 1st process S20: 2nd process S30: 3rd process

Claims

1. An electrolytic water generating device, an electrolysis unit for generating electrolyzed water; A tank for storing the electrolyzed water generated by the electrolysis unit; a circulation water channel for circulating the electrolyzed water between the tank and the electrolysis unit; A pump provided in the circulating water passage; a control unit for controlling the electrolysis unit and the pump, The control unit has the following control modes: a standby mode in which electrolysis is not performed in the electrolysis unit and the electrolytic water is retained in the tank; a recovery mode for electrolyzing the electrolyzed water in the electrolysis unit while driving the pump to circulate the electrolyzed water in the tank, thereby increasing the dissolved hydrogen concentration of the electrolyzed water in the tank; the control unit includes a measurement unit that measures a non-electrolysis time elapsed in the standby mode, a determination unit that determines an output of the electrolysis unit in the recovery mode using at least the non-electrolysis time, and a drive unit that operates the electrolysis unit at the determined output. Electrolyzed water generator.

2. The measurement unit is capable of measuring the electrolysis time elapsed in the recovery mode, The electrolytic water generating device according to claim 1 , wherein the determination unit determines the output of the electrolysis unit in the recovery mode based on the non-electrolysis time and the electrolysis time within a predetermined time.

3. The electrolytic water generating device according to claim 2, wherein the determination unit determines the output of the electrolysis unit in the recovery mode based on a difference between the accumulated non-electrolysis time and the accumulated electrolysis time within a predetermined time.

4. The electrolytic water generating device according to claim 3 , wherein the determination unit determines the output of the electrolysis unit in proportion to the difference.

5. The electrolytic water generating device according to claim 2, wherein the determination unit determines the output of the electrolysis unit in the recovery mode based on a ratio of the accumulated non-electrolysis time to the accumulated electrolysis time within a predetermined time.

6. The electrolytic water generating apparatus according to claim 5 , wherein the determination unit determines the output of the electrolysis unit in proportion to the ratio.

7. The electrolyzed water generating apparatus according to claim 1 , further comprising a reverse osmosis device disposed between the electrolysis unit and the tank for subjecting the electrolyzed water generated by the electrolysis unit to reverse osmosis treatment.

8. The electrolytic water generating apparatus according to claim 1, wherein the tank is connected so as to be capable of supplying the electrolytic water to a dialysis solution preparation device for preparing a dialysis solution by mixing the electrolytic water with a dialysis base agent.

9. The dialysis fluid preparation device includes a transmission unit that transmits a request signal to the control unit to request execution of the recovery mode, The electrolytic water generating device according to claim 8 , wherein the control unit includes a receiving unit that receives the request signal and executes the recovery mode.

10. A method for controlling an electrolytic water generating device, comprising: The electrolytic water generating device is an electrolysis unit for generating electrolyzed water; A tank for storing the electrolyzed water generated by the electrolysis unit; a circulation water channel for circulating the electrolyzed water between the tank and the electrolysis unit; A pump provided in the circulating water passage; a control unit for controlling the electrolysis unit and the pump, The control method includes: a standby mode in which electrolysis is not performed in the electrolysis unit and the electrolytic water is retained in the tank; a recovery mode for electrolyzing the electrolyzed water in the electrolysis unit while driving the pump to circulate the electrolyzed water in the tank, thereby increasing the dissolved hydrogen concentration of the electrolyzed water in the tank; The recovery mode is A first step of measuring a non-electrolysis time elapsed in the standby mode; a second step of determining an output of the electrolysis unit in the recovery mode using at least the non-electrolysis time; and a third step of operating the electrolysis unit at the determined power output. A method for controlling an electrolytic water generating device.

11. The first step measures the electrolysis time elapsed in the recovery mode, The method for controlling an electrolytic water generating apparatus according to claim 10, wherein the second step determines the output of the electrolysis unit in proportion to a difference between a cumulative non-electrolysis time and a cumulative electrolysis time within a predetermined time period.

12. The first step measures the electrolysis time elapsed in the recovery mode, The method for controlling an electrolyzed water generating apparatus according to claim 10, wherein the second step determines the output of the electrolysis unit in proportion to a ratio of the cumulative non-electrolysis time to the cumulative electrolysis time within a predetermined time period.

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