JP6836914B2 - Water treatment equipment, dialysate preparation water production equipment and hydrogen water server - Google Patents

Description

The present invention relates to an electrolyzed water generator or the like that electrolyzes water to generate electrolyzed hydrogen water.

Conventionally, there has been known an electrolyzed water generator which is provided with an electrolytic cell having an anode chamber and a cathode chamber partitioned by a solid polymer electrolyte membrane and electrolyzes raw water flowing into the electrolytic cell.

In the cathode chamber of the electrolyzed water generator, electrolyzed hydrogen water in which hydrogen gas is dissolved is generated. Further, in recent years, dissolved hydrogen water generated by an electrolyzed water generator has attracted attention as being suitable for reducing oxidative stress in patients by removing active oxygen generated during hemodialysis treatment (for example, patent). Reference 1). Hemodialysis using electrolyzed water is called electrolyzed water dialysis.

Raw water contains a small amount of metal ions such as calcium ions and magnesium ions. These metal ions are difficult to be completely removed by a filter or the like, and when they enter the electrolytic cell, they are deposited as scales inside the cathode chamber including the feeding body and inside the water pipe connected to the cathode chamber.

When a large amount of scale adheres to the surface of the feeding body, the voltage for electrolysis applied to the feeding body rises, and the power consumption of the electrolyzed water generator increases. Further, if a large amount of scale adheres to the inside of the water discharge pipe, the water discharge pipe may be clogged and the discharge amount of electrolytic hydrogen water may decrease.

Japanese Unexamined Patent Publication No. 2016-137421

The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide an electrolyzed water generator or the like capable of removing scale adhering to the surface or the like of a feeding body.

The first invention of the present invention is an electrolytic water generator that electrolyzes water to generate electrolytic hydrogen water, and is a first electrode chamber in which a first power supply body is arranged and a second power supply body in which a second power supply body is arranged. An electrolytic cell in which the bipolar chamber is separated by a diaphragm, a power supply unit that supplies a current for electrolysis to the first power supply body and the second power supply body, and the first power supply body and the second power supply body. The control means comprises a control means for controlling the polarity of the above, and when unheated water is supplied to the electrolytic cell, the first feeding body serves as a cathode and the second feeding body serves as an anode for heating. When the generated hot water is supplied to the electrolytic cell, the first feeding body serves as an anode and the second feeding body serves as a cathode.

The water treatment device of the second invention of the present invention is characterized by including the electrolyzed water generating device and a pretreatment device that generates the hot water and supplies it to the electrolyzed water generating device.

The apparatus for producing dialysate preparation water of the third invention of the present invention includes the water treatment apparatus, and the pretreatment apparatus can soften raw water and supply it to the electrolyzed water generator.

In the manufacturing apparatus according to the present invention, a post-treatment device for purifying the electrolyzed hydrogen water and a circulating water channel for circulating the hot water between the pre-treatment device, the electrolyzed water generating device and the post-treatment device are further provided. It is desirable to prepare.

The hydrogen water server of the fourth invention of the present invention includes the electrolyzed water generator, a tank for storing the electrolyzed hydrogen water, a heater for heating the water in the tank, and the hot water for the tank and the electrolyzed water. It is further provided with a circulating water channel that circulates between the water generators.

In the electrolyzed water generator of the first invention of the present invention, when unheated water is supplied to the electrolytic cell, the control means uses the first feeding body as a cathode and the second feeding body as an anode to electrolyze the current. Is controlled. As a result, electrolyzed hydrogen water suitable for electrolyzed water dialysis and drinking is generated in the first pole chamber. On the other hand, when the heated hot water is supplied to the electrolytic cell, the control means controls the electrolytic current by using the first feeding body as an anode and the second feeding body as a cathode. The hot water is supplied to the electrolytic cell when sterilizing the electrolytic cell or the like. In the present invention, at the same time as sterilizing the electrolytic cell or the like with hot water, the polarity of each feeding body is reversed and the water in the electrolytic cell is electrolyzed to remove the scale adhering to the surface or the like of the first feeding body. ..

In the water treatment apparatus of the second invention of the present invention, the pretreatment apparatus generates hot water and supplies it to the electrolyzed water generator. Therefore, the configuration of the electrolyzed water generator is simplified. For example, it is possible to inexpensively configure a water treatment apparatus by using an electrolyzed water generator having a conventional configuration, which is not equipped with a function of generating hot water.

In the dialysate preparation water production apparatus of the third invention of the present invention, the pretreatment apparatus has a function of softening raw water. This makes it possible to easily produce electrolytic hydrogen water suitable for dialysate preparation. Further, at the same time as sterilizing the water channel in the manufacturing apparatus with hot water, the polarity of each feeding body is reversed and the water in the electrolytic cell is electrolyzed, so that the scale adhering to the surface of the feeding body or the like can be removed.

In the hydrogen water server of the fourth invention of the present invention, the electrolyzed water generator, the tank for storing the electrolyzed hydrogen water, the heater for heating the water in the tank, and the hot water are circulated between the tank and the electrolyzed water generator. It has a circulating water channel. As a result, at the same time as sterilizing the water channel in the hydrogen water server with hot water, the polarity of each feeding body is reversed and the water in the electrolytic cell is electrolyzed, so that the scale adhering to the surface of the feeding body can be removed. ..

It is a block diagram which shows the schematic structure of one Embodiment of the water production apparatus for dialysate preparation including the electrolyzed water generation apparatus of this invention. It is a block diagram which shows the electric structure of the water treatment apparatus including the electrolyzed water generation apparatus of FIG. It is a block diagram which shows the operation of the electrolyzed water generator and the like when the unheated water is supplied to the electrolytic cell in the manufacturing apparatus of FIG. It is a block diagram which shows the operation of the electrolyzed water generator and the like when heated water is supplied to the electrolytic cell in the manufacturing apparatus of FIG. It is a block diagram which shows the schematic structure of one Embodiment of the hydrogen water server which includes the electrolyzed water generation apparatus of this invention. FIG. 5 is a block diagram showing an operation of an electrolyzed water generator or the like when unheated water is supplied to an electrolytic cell in the hydrogen water server of FIG. FIG. 5 is a block diagram showing an operation of an electrolyzed water generator or the like when heated water is supplied to an electrolytic cell in the hydrogen water server of FIG.

(First Embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic configuration of a dialysate preparation water manufacturing apparatus 100 (hereinafter, simply referred to as a manufacturing apparatus 100) including the electrolyzed water generating apparatus 1 of the present embodiment. The manufacturing apparatus 100 includes a pretreatment apparatus 200, an electrolyzed water generating apparatus 1, and a posttreatment apparatus 300. The electrolyzed water generation device 1 can be implemented independently without being combined with the pretreatment device 200 and the posttreatment device 300, or can be implemented in combination with devices other than the pretreatment device 200 and the posttreatment device 300.

The water treatment device 250 is configured by the pretreatment device 200 and the electrolyzed water generation device 1. The water treatment device 250 generates electrolytic hydrogen water from the raw water and supplies it to the aftertreatment device 300. The water treatment device 250 can be carried out independently without being combined with the aftertreatment device 300, and can be carried out in combination with a device other than the aftertreatment device 300.

The pretreatment device 200 is installed on the upstream side of the electrolyzed water generation device 1. The pretreatment device 200 includes a tank 201, a water softening device 202, an activated carbon treatment device 203, and a heater 204.

The tank 201 stores raw water supplied from the outside of the pretreatment device 200. Tap water is generally used as the raw water, but other water such as well water and groundwater can also be used. The water softening device 202 removes hardness components such as calcium ions and magnesium ions from the raw water to soften the water. The activated carbon treatment apparatus 203 adsorbs and removes chlorine and the like from soft water using activated carbon, which is a fine porous substance. The water treated by the pretreatment device 200 is supplied to the electrolyzed water generator 1 via the water channel 501. A valve 510 for switching the connection destination on the upstream side to the activated carbon treatment device 203 or the heater 204 is arranged in the water channel 501.

The heater 204 heats the water supplied from the tank 201 to, for example, 75 ° C. or higher to generate hot water.

The electrolyzed water generating device 1 electrolyzes the water supplied from the pretreatment device 200 to generate electrolyzed hydrogen water. The electrolyzed water generator 1 includes an electrolytic cell 4 in which a first pole chamber 40A in which the first feeding body 41 is arranged and a second pole chamber 40B in which the second feeding body 42 is arranged are separated by a diaphragm 43.

The polarities of the first feeding body 41 and the second feeding body 42 are different. That is, one of the first feeding body 41 and the second feeding body 42 is applied as an anode feeding body, and the other is applied as a cathode feeding body. Water is supplied to both the first pole chamber 40A and the second pole chamber 40B of the electrolytic chamber 40, and a DC voltage is applied to the first feeding body 41 and the second feeding body 42, so that water is supplied in the electrolytic chamber 40. Electrolysis occurs.

For the diaphragm 43, for example, a solid polymer membrane made of a fluororesin having a sulfonic acid group or the like is appropriately used. Plating layers made of platinum are formed on both sides of the diaphragm 43. The plating layer of the diaphragm 43 and the first feeding body 41 and the second feeding body 42 are in contact with each other and are electrically connected to each other. The diaphragm 43 allows ions generated by electrolysis to pass through. The first feeding body 41 and the second feeding body 42 are electrically connected via the diaphragm 43.

Hydrogen gas and oxygen gas are generated by electrolysis of water in the electrolytic chamber 40. For example, when the first feeding body 41 is applied as a cathode feeding body, hydrogen gas is generated in the first electrode chamber 40A, and hydrogen water in which the hydrogen gas is dissolved is generated. Hydrogen water produced by such electrolysis is referred to as "electrolyzed hydrogen water". On the other hand, in the second pole chamber 40B, oxygen gas is generated, and "electrolyzed oxygen water" in which the oxygen gas is dissolved is generated. When the first feeding body 41 is applied as an anode feeding body, oxygen gas is generated in the first pole chamber 40A, and electrolytic oxygen water in which the oxygen gas is dissolved is generated. On the other hand, in the second polar chamber 40B, hydrogen gas is generated, and electrolytic hydrogen water in which the hydrogen gas is dissolved is generated.

FIG. 2 shows the electrical configuration of the water treatment device 250 including the electrolyzed water generator 1. The electrolyzed water generator 1 includes the first power supply body 41 and the second power supply body 42, a power supply unit 5 that supplies a current for electrolysis to the first power supply body 41 and the second power supply body 42, and a power supply unit 5. A control means 6 for controlling the above is provided.

The power supply unit 5 supplies electric power to each unit of the electrolyzed water generator 1 in addition to the first power supply body 41 and the second power supply body 42. The control means 6 controls each part of the electrolyzed water generator 1 in addition to the power supply part 5.

The control means 6 has, for example, a CPU (Central Processing Unit) that executes various arithmetic processes, information processing, and the like, a program that controls the operation of the CPU, and a memory that stores various information. A current detecting means 44 is provided in the current supply line between the first power feeding body 41 and the power supply unit 5. The current detecting means 44 may be provided in the current supply line between the second feeding body 42 and the power supply unit 5. The current detecting means 44 detects the electrolytic current I supplied to the first feeding body 41 and the second feeding body 42, and outputs an electric signal corresponding to the value to the control means 6.

The control means 6 controls, for example, the DC voltage applied to the first power supply body 41 and the second power supply body 42 by the power supply unit 5 based on the electric signal output from the current detection means 44. More specifically, in the control means 6, the power supply unit 5 is the first feeding body so that the electrolytic current I detected by the current detecting means 44 becomes a desired value according to the preset dissolved hydrogen concentration. The DC voltage applied to the 41 and the second feeding body 42 is feedback-controlled. For example, when the electrolytic current I is excessive, the control means 6 decreases the voltage, and when the electrolytic current I is too small, the control means 6 increases the voltage. As a result, the electrolytic current I supplied by the power supply unit 5 to the first feeding body 41 and the second feeding body 42 is appropriately controlled.

As shown in FIG. 1, the aftertreatment device 300 is installed on the downstream side of the electrolyzed water generator 1. The aftertreatment device 300 is connected to the first pole chamber 40A of the electrolyzed water generator 1 via a water channel 502. Therefore, the electrolyzed hydrogen water generated in the first pole chamber 40A is supplied to the aftertreatment device 300. The electrolyzed oxygen water secondarily generated in the second pole chamber 40B is discharged to the outside of the electrolyzed water generator 1 as drainage through the water channel 503.

The aftertreatment device 300 includes a reverse osmosis membrane treatment device 301 and a tank 302. The reverse osmosis membrane treatment device 301 purifies the electrolytic hydrogen water using a reverse osmosis membrane (not shown). The electrolyzed hydrogen water purified by the reverse osmosis membrane satisfies, for example, ISO13959, which is a purification standard for dialysate preparation water, and is used as dialysate preparation water for dilution of dialysate.

The tank 302 stores electrolyzed hydrogen water (RO electrolyzed water) purified by the reverse osmosis membrane treatment device 301. The electrolytic hydrogen water stored in the tank 302 is supplied to a diluting device (not shown) via the water channel 504.

The tank 302 and the heater 204 are connected by a water channel 505. The water channels 501, 502, 505 and the like constitute a circulating water channel 506 for circulating hot water between the pretreatment device 200, the electrolyzed water generator 1 and the post-treatment device 300. A pump (not shown) for driving hot water is arranged in the water channel 505.

The control means 6 (see FIG. 2) controls the polarities of the first feeding body 41 and the second feeding body 42 according to the operation mode of the electrolyzed water generating device 1. The operation modes of the electrolyzed water generator 1 include a "hydrogen water generation mode" in which electrolytic hydrogen water is generated in the first electrode chamber 40A and a "sterilization mode" in which the electrolytic cell 4 and the like are sterilized with hot water circulating in the circulating water channel 506. Is included.

FIG. 3 shows the operation of the manufacturing apparatus 100 in the hydrogen water generation mode. In the figure, the structure filled with water and the channel are indicated by thin hatching. Further, FIG. 4 shows the operation of the manufacturing apparatus 100 in the sterilization mode. In the figure, the configuration filled with hot water and the channel are indicated by thin hatching. The flow of water or hot water at key points in the waterway is indicated by arrows in the figure (the same applies to FIGS. 6 and 7).

The electrolyzed water generator 1 operates in the hydrogen water generation mode when unheated water is supplied to the electrolytic cell 4, and operates in the sterilization mode when the heated hot water is supplied to the electrolytic cell 4. .. Whether or not the water supplied to the electrolytic cell 4 is heated can be determined by the control means 6 based on, for example, an electric signal input from the pretreatment device 200. Further, the water temperature sensor may be provided in the water channel 501, and the control means 6 may determine based on the output signal thereof.

As shown in FIG. 3, when the activated carbon treatment device 203 and the electrolytic cell 4 are connected and unheated water is supplied to the electrolytic cell 4, the control means 6 uses the first feeding body 41 as a cathode as a cathode. The electrolytic current I is controlled. As a result, electrolyzed hydrogen water suitable for electrolyzed water dialysis is generated in the first electrode chamber 40A.

On the other hand, as shown in FIG. 4, when the heater 204 and the electrolytic cell 4 are connected and the hot water heated by the heater 204 is supplied to the electrolytic cell 4, the control means 6 sends the first power supply body 41. The electrolytic current I is controlled as an anode. The hot water is supplied to the electrolytic cell 4 when sterilizing the electrolytic cell 4 and the like. In the present invention, at the same time as sterilizing the electrolytic cell 4 and the like with hot water, the polarities of the feeding bodies 41 and 42 are reversed and the water in the electrolytic cell 4 is electrolyzed to form the surface of the first feeding body 41 and the like. The attached scale can be removed. In this sterilization mode, hot water circulates through the heater 204, the electrolytic cell 4, the reverse osmosis membrane treatment device 301 and the tank 302 via the circulation water channel 506, so that the water channels 501, 502, the electrolytic cell 4 and the reverse osmosis membrane treatment device 301, tank 302, etc. are sterilized by hot water.

In the water treatment device 250 of the present embodiment, the heater 204 arranged in the pretreatment device 200 generates hot water and supplies it to the electrolyzed water generation device 1. Therefore, the configuration of the electrolyzed water generator 1 is simplified. For example, it is possible to inexpensively configure the water treatment device 250 by using the electrolyzed water generator 1 having a conventional configuration that is not equipped with the function of generating hot water.

In the manufacturing apparatus 100, the water channel 505 may be omitted. In this case, in the sterilization mode, the water stored in the tank 201 is heated by the heater 204, becomes hot water, passes through each part of the manufacturing apparatus 100, and is discharged from the water channels 503 and 504.

(Second Embodiment)
FIG. 5 shows the configuration of the hydrogen water server 600 including the electrolyzed water generator 1 according to the embodiment of the present invention. The hydrogen water server 600 includes an electrolyzed water generator 1, a filter 601, a tank 602, and a heater 603. The electrolyzed water generator 1 can be applied to devices other than the hydrogen water server 600.

The filter 601 filters the raw water supplied from the outside of the hydrogen water server 600 and supplies it to the tank 602. The tank 602 supplies water for electrolysis to the electrolyzed water generator 1.

The configuration of the electrolyzed water generator 1 is the same as that of the electrolyzed water generator 1 included in the manufacturing apparatus 100. That is, the electrolyzed water generator 1 has an electrolytic cell 4 in which the first pole chamber 40A in which the first feeding body 41 is arranged and the second pole chamber 40B in which the second feeding body 42 is arranged are separated by a diaphragm 43. The electrical configuration thereof is shown in FIG.

The tank 602 and the electrolytic cell 4 are connected by water channels 701, 702, and 703. The water channel 701 branches into the water channel 701A and the water channel 701B. The water channel 701A is connected to the first pole chamber 40A on the upstream side of the electrolytic cell 4. The water channel 701B is connected to the second pole chamber 40B on the upstream side of the electrolytic cell 4. In the present embodiment, the water channel 701B is provided with a throttle valve 704 for limiting the water supplied to the second pole chamber 40B.

Further, the water channel 702 is connected to the first pole chamber 40A on the downstream side of the electrolytic cell 4. The water channel 703 is connected to the second pole chamber 40B on the downstream side of the electrolytic cell 4. The water channels 701, 702, and 703 form a circulating water channel 706 that circulates water between the tank 602 and the electrolyzed water generator 1.

The electrolyzed hydrogen water produced in the first pole chamber 40A is returned to the tank 602 via the water channel 702. By electrolyzing in the electrolytic cell 4 while circulating the water stored in the tank 602, the dissolved hydrogen concentration of the electrolytic hydrogen water in the tank 602 is increased.

A water channel 707 is connected to the tank 602. Electrolyzed hydrogen water is taken out of the hydrogen water server 600 via the water channel 707. Instead of the water channel 707, a water channel for taking out electrolytic hydrogen water may be connected to the first pole chamber 40A or the water channel 702. When the electrolytic hydrogen water stored in the tank 602 is consumed, the raw water filtered by the filter 601 is supplied to the tank 602.

The heater 603 heats the water in the tank 602. The heater 603 is provided on the side wall of the tank 602, for example. The heater 603 may be provided in the circulation water channel 706.

The control means 6 (see FIG. 2) controls the polarities of the first feeding body 41 and the second feeding body 42 according to the operation mode of the electrolyzed water generating device 1. The operation modes of the electrolyzed water generator 1 include a "hydrogen water generation mode" in which electrolytic hydrogen water is generated in the first electrode chamber 40A and a "sterilization mode" in which the electrolytic cell 4 and the like are sterilized with hot water circulating in the circulating water channel 706. Is included.

FIG. 6 shows the operation of the hydrogen water server 600 in the hydrogen water generation mode. In the figure, the structure filled with water and the channel are indicated by thin hatching. Further, FIG. 7 shows the operation of the hydrogen water server 600 in the sterilization mode. In the figure, the configuration filled with hot water and the channel are indicated by thin hatching.

The electrolyzed water generator 1 operates in the hydrogen water generation mode when unheated water is supplied to the electrolytic cell 4, and operates in the sterilization mode when the heated hot water is supplied to the electrolytic cell 4. .. Whether or not the water supplied to the electrolytic cell 4 is heated can be determined, for example, by the control means 6 controlling the operation of the heater 603.

As shown in FIG. 6, when unheated water is supplied to the first pole chamber 40A and the second pole chamber 40B of the electrolytic cell 4, the control means 6 uses the first feeding body 41 as a cathode and serves as a cathode. The electrolytic current I is controlled by using the second feeding body as an anode. As a result, drinking electrolytic hydrogen water is produced in the first pole chamber 40A. In the hydrogen water generation mode, the throttle valve 704 limits the water supplied to the second pole chamber 40B, so that the electrolytic oxygen water generated in the second pole chamber 40B is suppressed from returning to the tank 602. .. As a result, the dissolved hydrogen concentration of the electrolyzed water in the tank 602 can be efficiently increased.

On the other hand, as shown in FIG. 7, when the heated hot water is supplied to the first pole chamber 40A and the second pole chamber 40B of the electrolytic cell 4, the control means 6 uses the first feeding body 41 as an anode. At the same time, the electrolytic current I is controlled by using the second feeding body as a cathode. The hot water is supplied to the electrolytic cell 4 in order to sterilize the electrolytic cell 4 and the like. At this time, the throttle valve 704 is opened, and hot water is also supplied to the second electrode chamber 40B. That is, the hot water circulates through the heater 603, the electrolytic cell 4, and the throttle valve 704 via the circulation water channel 706, so that the water channels 701, 702, 703, the electrolytic cell 4, the throttle valve 704, and the like are sterilized by the hot water. Further, in the present invention, at the same time as sterilizing the inside of the hydrogen water server 600 with hot water, the polarities of the feeding bodies 41 and 42 are reversed to electrolyze the water in the electrolytic cell 4, thereby causing the first feeding body 41 to be electrolyzed. The scale adhering to the surface etc. can be removed.

Although the electrolyzed water generator 1 and the like of the present embodiment have been described in detail above, the present invention is not limited to the above-mentioned specific embodiment, but is modified to various embodiments. That is, in the electrolyzed water generator 1, at least the first electrode chamber 40A in which the first feeding body 41 is arranged and the second electrode chamber 40B in which the second feeding body 42 is arranged are separated by an electrolytic cell 43. 4, a power supply unit 5 that supplies a current for electrolysis to the first power supply body 41 and the second power supply body 42, and a control means 6 that controls the polarity of the first power supply body 41 and the second power supply body 42. When unheated water is supplied to the electrolytic cell 4, the control means 6 uses the first feeding body 41 as a cathode and the second feeding body as an anode, and the heated hot water is used as the electrolytic cell 4. The first feeding body 41 may be used as an anode and the second feeding body may be used as a cathode.

1 Electrolyzed water generator 4 Electrolytic cell 5 Power supply unit 6 Control means 7 Water discharge pipe 40A 1st pole chamber 40B 2nd pole chamber 41 1st feeding body 42 2nd feeding body 43 Diaphragm 100 Manufacturing device 200 Pretreatment device 250 Water treatment device 300 Aftertreatment device 506 Circulation channel 600 Hydrogen water server 602 Tank 603 Heater 706 Circulation channel

Claims (4)

A water treatment device including an electrolyzed water generator that electrolyzes water to generate electrolyzed hydrogen water and a pretreatment device that generates hot water and supplies it to the electrolyzed water generator .
The electrolyzed water generator
An electrolytic cell in which a first pole chamber in which a first feeding body is arranged and a second pole chamber in which a second feeding body is arranged are separated by a diaphragm, and electrolysis is performed in the first feeding body and the second feeding body. A power supply unit for supplying a current for the above, and a control means for controlling the polarities of the first feeding body and the second feeding body are provided.
The control means
Based on the electric signal input from the pretreatment device, it is determined whether or not the water supplied to the electrolytic cell is heated.
When unheated water was supplied to the electrolytic cell, the first feeding body was used as a cathode and the second feeding body was used as an anode.
A water treatment apparatus characterized in that when heated hot water is supplied to the electrolytic cell, the first feeding body serves as an anode and the second feeding body serves as a cathode. The water treatment apparatus according to claim 1 is provided.
The pretreatment apparatus is an apparatus for producing dialysate preparation water, which can soften raw water and supply it to the electrolyzed water generating apparatus. The dialysate preparation according to claim 2, further comprising a post-treatment device for purifying the electrolyzed hydrogen water and a circulating water channel for circulating the hot water between the pre-treatment device, the electrolyzed water generating device and the post-treatment device. Water production equipment. A hydrogen water server provided with the water treatment apparatus according to claim 1.
The pretreatment device is
With the tank that stores the electrolyzed hydrogen water
A heater that heats the water in the tank and
Further provided with a circulating water channel for circulating the hot water between the tank and the electrolyzed water generator.
The circulation water channel includes a first water channel connected to the first pole chamber on the upstream side of the electrolytic cell and a second water channel connected to the second pole chamber on the upstream side of the electrolytic cell. The second water channel is provided with a throttle valve for limiting the water supplied to the second pole chamber.
When unheated water is supplied to the electrolytic cell, the throttle valve limits the water supplied to the second pole chamber.
A hydrogen water server characterized in that the throttle valve is opened when the heated hot water is supplied to the electrolytic cell.

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