JP2013022567A - Hydrogen water manufacturing device and hydrogen water manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydrogen water manufacturing device which is simply structured compared with an electrolytic water generator, and is capable of more efficiently manufacturing hydrogen water than a conventional hydrogen water generator formed by enclosing magnesium in a ceramic case.SOLUTION: The hydrogen water manufacturing device includes: a pressure container 1 for dissolving hydrogen in stored water; a hydrogen generation part 2 for generating the hydrogen by hydrolysis of magnesium hydride 24; a hydrogen supply pipe 6 for supplying the hydrogen generated in the hydrogen generation part 2 to the pressure container 1; a deodorization part 3 interposed in the middle of the hydrogen supply pipe 6, for deodorizing the hydrogen generated in the hydrogen generation part 2; an on-off valve for opening and closing the hydrogen supply pipe 6; a hydrogen water supply pipe 7 for supplying the hydrogen water formed by dissolving the pressurized hydrogen in the water stored in the pressure container 1 to the outside; a regulator 4 interposed in the middle of the hydrogen water supply pipe 7, for decompressing the hydrogen water; and a hydrogen water take-out part 5 for taking out the hydrogen water decompressed in the regulator 4.

Description

  The present invention relates to a hydrogen water production apparatus and a hydrogen water production method for producing hydrogen water using hydrogen generated by hydrolysis of magnesium hydride.

  Patent Document 1 discloses an electrolyzed water generating device that generates reducing electrolyzed water by electrolyzing water.

  Patent Document 2 discloses a hydrogen water generating method for generating hydrogen water for beverage without using an electrolyzer. Specifically, a hydrogen water generator is configured by filling a water-immersive porous ceramic case with magnesium particles and silver particles that react with drinking water to generate hydrogen gas. This hydrogen water generator is put in a container together with drinking water, and the drinking water, magnesium grains, ceramics and silver grains are reacted in the container to generate hydrogen gas, and the drinking water in the container is purified by the action of the silver grains and hydrogen It is changed to hydrogen water containing abundant and antibacterial action.

  On the other hand, as a method for storing hydrogen, a method using a hydrogen storage alloy such as magnesium hydride is known. Magnesium hydride generates hydrogen by hydrolysis.

Japanese Patent No. 3349710 JP 2005-161209 A

However, the electrolyzed water generating apparatus according to Patent Document 1 requires a power source for electrolysis and has a complicated structure, and thus has a problem of high cost.
In the hydrogen water generator according to Patent Document 2, water does not efficiently enter a ceramic case enclosing magnesium, so that sufficient hydrogen is not generated and hydrogen water in which hydrogen is dissolved is generated in a short time. There was a problem that it was difficult.
Further, when the water permeability of the ceramic case is improved, there is a risk that magnesium hydroxide, which is a product of the hydrogen generation reaction, leaks out of the ceramic container into the drinking water.

  The present invention has been made in view of such circumstances, and has a simpler structure than an electrolyzed water generating device, and more efficient than a conventional hydrogen water generator in which magnesium is enclosed in a ceramic case. An object of the present invention is to provide a hydrogen water production apparatus and a hydrogen water production method capable of producing hydrogen water.

  A hydrogen water production apparatus according to the present invention includes a container for dissolving hydrogen in stored water, a hydrogen generation unit that generates hydrogen by hydrolysis of magnesium hydride, and hydrogen generated in the hydrogen generation unit. And a hydrogen water supply pipe for supplying hydrogen water formed by dissolving pressurized hydrogen in water stored in the container to the outside.

  The hydrogen water production apparatus according to the present invention includes a water injection pipe for injecting water into the container, and a water injection valve for opening and closing the water injection pipe.

  The hydrogen water production apparatus according to the present invention is provided in the middle of the hydrogen supply pipe, and includes a deodorization unit that deodorizes the hydrogen generated in the hydrogen generation unit.

  The hydrogen water production apparatus according to the present invention includes a purge valve for purging air remaining in the hydrogen generation unit and the deodorization unit.

  The hydrogen water production apparatus according to the present invention includes an inlet-side on-off valve provided on the inlet side of the deodorizing unit and an outlet-side on-off valve provided on the outlet side of the deodorizing unit.

  The hydrogen water production apparatus according to the present invention is provided in the middle of the hydrogen water supply pipe, and includes a regulator for depressurizing the hydrogen water.

  The hydrogen water production apparatus according to the present invention includes a hydrogen water extraction unit that extracts hydrogen water decompressed by the regulator.

  The hydrogen water production apparatus according to the present invention is characterized in that the hydrogen water extraction unit is a water gun that further depressurizes and outputs the hydrogen water decompressed by the regulator.

  The hydrogen water production apparatus according to the present invention includes a fuel gauge indicating the remaining amount of hydrogen water stored in the container.

  The hydrogen water production apparatus according to the present invention includes a check valve interposed in the middle of the hydrogen supply pipe.

  The hydrogen water production apparatus according to the present invention includes a pressure gauge for measuring the internal pressures of the hydrogen generation unit and the container, respectively.

  The hydrogen water production apparatus according to the present invention includes a hydrogen water supply valve provided in the hydrogen water supply pipe.

  A hydrogen water production method according to the present invention is a hydrogen water production method for producing hydrogen water using any one of the above-mentioned hydrogen water production apparatuses, the step of supplying water to the container until the water is almost full, The step of supplying magnesium hydride and water or an acidic solution to the hydrogen generation unit and the step of discharging a predetermined amount of water from the container are provided.

  The method for producing hydrogen water according to the present invention is characterized in that the method further comprises the step of injecting water into the vessel in which hydrogen water is taken out and hydrogen remains.

  In the present invention, hydrogen for producing hydrogen water is generated in the hydrogen generator. In the hydrogen generator, hydrogen is generated by hydrolysis of magnesium hydride. Hydrogen generated in the hydrogen generator is supplied to the container. The hydrogen supplied to the container is pressurized by the hydrogen itself generated in the hydrogen generator, for example, the hydrogen pressure becomes 0.3 MPa. The pressurized hydrogen is dissolved in water stored in advance in the container to produce hydrogen water. Since this hydrogen water is obtained by dissolving pressurized hydrogen in the stored water, it is higher than the saturated hydrogen concentration under atmospheric pressure, for example, 1,500 μg / L. Accordingly, it is possible to supply to the outside hydrogen water having a higher saturated hydrogen concentration under atmospheric pressure, for example, hydrogen water having a hydrogen concentration of 1,900 μg / L.

  In the present invention, it is possible to inject water into the container by opening the water injection valve. In the case where a larger amount of hydrogen than the amount of hydrogen dissolved in water that can be stored in the container is supplied to the container, hydrogen water can be supplementarily produced by additionally injecting water into the container. In the present invention, since hydrogen is generated by bringing water into contact with magnesium hydride, it is difficult to precisely control the generation amount of hydrogen, that is, to generate and interrupt hydrogen. Therefore, a certain amount of hydrogen is generated at a time and supplied to the container, and the amount of hydrogen generated is controlled by devising a method for producing hydrogen water as needed while additionally injecting water. In addition, it is not necessary to store the generated hydrogen in a separate tank, and hydrogen water can be produced efficiently.

  In the present invention, the hydrogen generated in the hydrogen generation unit is supplied to the container via the deodorization unit. By the deodorizing part, it is possible to remove odors contained in hydrogen generated by hydrolysis of magnesium hydride.

  In the present invention, the hydrogen remaining in the hydrogen generating part and the deodorizing part can be replaced with hydrogen by opening the purge valve when starting the generation of hydrogen in the hydrogen generating part. It is possible to prevent the air that is not used for the air from being supplied to the container. Therefore, it is possible to produce hydrogen water more efficiently. Here, the position where the purge valve is provided is not particularly limited. For example, a purge valve may be provided in any of the upper part, the lower part, and the middle part of the deodorization tank.

  In the present invention, when the deodorizing part is stored, it is possible to prevent invasion of germs and the like into the deodorizing part by closing the inlet side opening / closing valve and the outlet side opening / closing valve.

  In the present invention, the hydrogen water in the container is decompressed by the regulator and taken out.

  In the present invention, the hydrogen water in the container is depressurized by the regulator, and further depressurized by the hydrogen water take-out portion and taken out. Since the hydrogen water is extracted at two or more stages of decompression, hydrogen in the hydrogen water can be suppressed from being released into the air by sudden decompression. In addition, the hydrogen water extraction part may be single or plural. The form of the hydrogen water extraction unit is not particularly limited as long as it is an apparatus that can extract hydrogen water from the container, and a tap, a water gun, which will be described later, and other known techniques can be applied.

  In the present invention, the hydrogen water decompressed by the regulator is further decompressed by the water gun and output to the outside.

  In the present invention, the amount of hydrogen water remaining in the container can be confirmed.

  In the present invention, it is possible to prevent hydrogen from flowing backward from the container to the hydrogen generation unit.

  In the present invention, it is possible to confirm the internal pressures of the hydrogen generation part and the container.

  In the present invention, by closing the hydrogen water supply valve, it is possible to prevent hydrogen from being taken out of the container while hydrogen is dissolved in water.

  According to the present invention, hydrogen water can be produced more efficiently than a conventional hydrogen water generator having a simple structure as compared with an electrolyzed water generator and having magnesium enclosed in a ceramic case. .

It is the sectional side view which showed typically the example of 1 structure of the hydrogenous water manufacturing apparatus concerning this Embodiment. It is the flowchart which showed the procedure of the hydrogenous water manufacturing method. It is explanatory drawing which showed the hydrogen water manufacturing method notionally. It is explanatory drawing which showed the hydrogen water manufacturing method notionally. It is the block diagram which showed one structural example of the control apparatus which concerns on a modification. It is the flowchart which showed the process sequence of the control apparatus which concerns on a modification. It is the flowchart which showed the process sequence of the control apparatus which concerns on a modification. It is the flowchart which showed the process sequence of the control apparatus which concerns on a modification.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
FIG. 1 is a side cross-sectional view schematically showing a configuration example of a hydrogen water production apparatus according to the present embodiment. An apparatus for producing hydrogen water according to an embodiment of the present invention includes a hydrogen generation unit 2 that generates hydrogen by hydrolysis of magnesium hydride 24, and a pressure vessel (container) 1 for dissolving hydrogen in stored water. The hydrogen generator 2 and the pressure vessel 1 are connected by a hydrogen supply pipe 6 made of a fluororesin. In the middle of the hydrogen supply pipe 6, a deodorizing unit 3 for deodorizing hydrogen generated in the hydrogen generating unit 2 is interposed. Note that the deodorizing unit 3 is not essential, and it is not necessary to provide the deodorizing unit 3 when the smell of hydrogen water is not a problem.

  The hydrogen generating unit 2 has a bottomed cylindrical pressure vessel with a round bottom. The pressure vessel is made of, for example, a metal such as stainless steel or a resin, and the opening at the top of the pressure vessel is configured to be sealed with a lid. The capacity of the pressure vessel is, for example, 500 mL. A hydrogen outlet is formed at a substantially central portion of the lid, and a hydrogen supply valve 21 is provided at the outlet. One end of a first hydrogen supply pipe 61 is connected to the hydrogen supply valve 21. In addition, the lid is provided with a pressure gauge 22 and a safety valve 23 for measuring and displaying the internal pressure of the pressure vessel. The safety valve 23 operates at, for example, 0.5 MPa, and is configured such that the internal pressure of the pressure resistant container is 0.5 MPa or less. By introducing the magnesium hydride 24 and the citric acid aqueous solution 25 into the pressure vessel configured as described above, the magnesium hydride 24 can be hydrolyzed to generate hydrogen.

The deodorizing unit 3 includes a deodorizing member that deodorizes the hydrogen generated by the hydrogen generating unit 2 and removes moisture, for example, a hollow columnar deodorizing tank containing activated carbon. The other end of the first hydrogen supply pipe 61 is connected to the lower part of the deodorization tank, and one end of the second hydrogen supply pipe 62 is connected to the upper part of the deodorization tank. The deodorizing unit 3 is disposed on the upper part of the hydrogen generating unit 2, and the first hydrogen supply pipe 61 has a pipe portion that extends vertically upward by a predetermined length. Since the hydrolysis reaction of the magnesium hydride 24 in the hydrogen generation unit 2 is an exothermic reaction, the hydrogen generated in the hydrogen generation unit 2 is accompanied by water vapor. By providing the pipe portion, the water vapor is generated in the pipe. The condensed water can be returned to the hydrogen generator 2. The length of the piping part is set so that water vapor that impedes the function of the deodorizing part 3 does not flow. For example, in this Embodiment, the said piping part is extended to the upper part of a deodorizing tank. Alternatively, the water vapor may be condensed by cooling the piping by some method.
The other end of the second hydrogen supply pipe 62 is connected to the pressure vessel 1. Hydrogen generated in the hydrogen generator 2 flows from the lower part of the deodorization tank and is deodorized in the process of passing through the deodorization member, and the deodorized hydrogen flows out from the upper part of the deodorization tank to the pressure vessel 1. Further, a deodorization tank inlet side opening / closing valve 31 and a deodorization tank outlet side opening / closing valve 32 are provided on the inlet side and the outlet side of the deodorization tank, respectively. By closing the deodorization tank inlet side opening / closing valve 31 and the deodorization tank outlet side opening / closing valve 32, when the deodorization part 3 is stored, the deodorization tank can be sealed to prevent invasion of germs. A pipe for purging the air remaining in the hydrogen generation unit 2 and the deodorization unit 3 is connected to an appropriate portion of the deodorization tank, and a purge valve 33 is provided in the pipe.

The pressure vessel 1 has a substantially bottomed cylindrical shape with a narrowed upper portion, and is formed of, for example, a metal such as stainless steel or a resin. The upper opening of the pressure vessel 1 is sealed with a lid. The capacity | capacitance of the pressure vessel 1 is 13.5 mL, for example, and it is formed so that it can endure the internal pressure of 0.5 MPa. A hydrogen inlet is formed substantially at the center of the lid of the pressure vessel 1, and the other end of the second hydrogen supply pipe 62 is connected to the inlet via the check valve 18 and the pressure vessel opening / closing valve 11. The check valve 18 prevents the gas in the pressure vessel 1 from flowing back to the deodorizing unit 3 and the hydrogen generating unit 2. By opening and closing the second hydrogen supply pipe 62 with the pressure vessel opening / closing valve 11, the flow of hydrogen generated in the hydrogen generator 2 can be controlled. In addition, a pipe is connected to an inlet formed at a substantially central portion of the lid for bubbling hydrogen into water stored in the pressure vessel 1. In addition, a pressure gauge 15 that measures and displays the internal pressure of the pressure vessel and a safety valve 16 having an operating pressure of 0.5 MPa are provided on the lid of the pressure vessel 1. Furthermore, a pipe for exhausting hydrogen gas is connected to an appropriate portion of the lid, and an exhaust valve 13 is provided in the pipe. Furthermore, a water injection pipe 8 for injecting water into the pressure vessel 1 is connected to an appropriate portion of the lid. The water injection pipe 8 is provided with a switching valve 9 and a water injection valve 12 from the upstream side.
In the lower part of the pressure vessel 1, an outlet for supplying hydrogen water obtained by dissolving hydrogen in water stored in the pressure vessel 1 to the outside is formed, and a hydrogen water supply valve 14 is provided at the outlet. It has been. One end of a hydrogen water supply pipe 7 made of a fluororesin is connected to the hydrogen water supply valve 14, and a hydrogen water extraction portion 5 is provided at the other end of the hydrogen water supply pipe 7. A regulator 4 for depressurizing the hydrogen water is interposed in the middle of the hydrogen water supply pipe 7. The hydrogen water extraction unit 5 is, for example, a water gun that further depressurizes and outputs the hydrogen water decompressed by the regulator 4. The water gun has a lever capable of adjusting the amount of hydrogen water taken out.
A fuel gauge 17 is provided outside the pressure vessel 1. The fuel gauge 17 is a transparent tube that communicates with the inside of the pressure vessel 1. The remaining amount of hydrogen water stored in the pressure vessel 1 can be confirmed by visually observing the surface of the water or hydrogen water that has flowed into the pipe.

FIG. 2 is a flowchart showing the procedure of the hydrogen water production method, and FIGS. 3 and 4 are explanatory views conceptually showing the hydrogen water production method. First, a hydrogen water production apparatus according to the present embodiment and 10 g of magnesium hydride 24 are prepared. The magnesium hydride 24 is prepared in the form of, for example, a 17 × 17 × 35 mm tablet or a powder in a water-permeable bag. Then, as a preliminary preparation, 60 g of anhydrous citric acid is added to 240 g of tap water to prepare an aqueous citric acid solution 25 adjusted to 300 g. Hereinafter, a procedure for producing hydrogen water will be described. In addition, although the following procedure is described as an example performed by a person, a part of the steps may be realized by a control instruction from a control circuit.
First, each valve of the hydrogen water production apparatus is closed (step S1). Then, the exhaust valve 13 and the water injection valve 12 are opened, and water is injected into the pressure vessel 1 until the water is full (step S2). Note that the lid of the pressure vessel 1 may be removed, and water injection may be performed from the opening of the pressure vessel 1.

  Next, the hydrogen supply valve 21, the deodorization tank inlet side opening / closing valve 31, and the purge valve 33 are opened (step S3). And the citric acid aqueous solution 25 and the magnesium hydride 24 are thrown into the hydrogen generation part 2, and a lid part is attached and sealed (step S4). By waiting for a certain time after the process of step S4, the air in the hydrogen generating unit 2 and the deodorizing unit 3 is purged with hydrogen generated in the hydrogen generating unit 2 (step S5).

  Next, the deodorizing tank outlet side opening / closing valve 32 and the pressure vessel opening / closing valve 11 are opened (step S6), the purge valve 33 is closed (step S7), and the hydrogen water supply valve 14 is opened (step S8). Then, a predetermined amount, for example, 3.5 L of water is drained from the hydrogen water extraction unit 5 (step S9). The amount of drainage can be confirmed with the fuel gauge 17. When step S9 is completed, as shown in FIG. 3A, 10 L of water is stored in the pressure vessel 1, and 3.5 L of hydrogen is present in the upper space. When 10 g of magnesium hydride 24 is hydrolyzed, 1400.4 mg of hydrogen is generated. When 1400.4 mg of hydrogen is filled in a 3.5 L space, the pressure in the gas phase becomes 0.3822 MPa. Since the air in the hydrogen generating unit 2 and the deodorizing unit 3 is purged with hydrogen and the supply of hydrogen is started from the state where the pressure vessel 1 is filled with water, hydrogen in which no air is mixed in the upper space. Filled with gas. After draining, the hydrogen water supply valve 14 is closed and left for a predetermined time, for example, about 2 hours (step S10). When the step S10 is completed, hydrogen is dissolved in the water stored in the pressure vessel 1, as shown in FIG. 3B. The amount of hydrogen dissolved in water is 72.82 mg / 10L. Since hydrogen of about 0.3 MPa is dissolved in water in the pressure vessel 1, hydrogen water having a hydrogen concentration higher than the saturated hydrogen concentration under atmospheric pressure is produced. Through the above steps, hydrogen water in which hydrogen is dissolved in water is produced.

  A method for removing hydrogen water will be described. First, the hydrogen water supply valve 14 is opened. And hydrogen water can be taken out by holding the lever of the water gun which is the hydrogen water extraction part 5. As shown in FIG. 3C, when the amount of hydrogen water in the pressure vessel 1 becomes 1 L, the capacity of the upper space becomes 12.5 L, and about 1327.6 mg of hydrogen remaining without being dissolved in water, The pressure becomes 0.099 MPa.

Next, a method for supplementarily producing hydrogen water will be described. As described above, since about 1327.6 mg of hydrogen remaining in the pressure vessel 1 without being dissolved in water is present, hydrogen water can be supplementarily produced by pouring water further into the pressure vessel 1. . Specifically, water is injected into the pressure vessel 1 by closing the hydrogen water supply valve 14 and opening the water injection valve 12. As shown in FIG. 4D, water injection is performed, for example, until the water in the pressure vessel 1 reaches 10L. And hydrogen is dissolved in the water in the pressure vessel 1 by leaving it for a predetermined time, for example, about 2 hours. Approximately 62.13 mg / 9 L of hydrogen is dissolved in the added 9 L of water, and 1265.5 mg of hydrogen remains in the upper portion of the pressure vessel 1.
The method of taking out the supplementary manufactured hydrogen water is as described above. When 9 L of hydrogen water produced supplementarily is used and the amount of hydrogen water in the pressure vessel 1 becomes 1 L, the capacity of the upper space becomes 12.5 L, as shown in FIG. The remaining hydrogen is about 1265.5 mg and the gas phase pressure is 0.093 MPa.
Hereinafter, hydrogen water can be produced and used by repeating water injection in the same manner.

  In this embodiment, the structure is simpler than that of an electrolyzed water generator, and hydrogen water is produced more efficiently than a conventional hydrogen water generator in which magnesium is enclosed in a ceramic case. be able to.

Further, a certain amount of hydrogen is generated at a time by hydrolysis of the magnesium hydride 24, supplied to the pressure vessel 1, and hydrogen water can be supplementarily produced while water is additionally poured. Therefore, there is no need for a special mechanism for controlling the amount of hydrogen generated or for storing the generated hydrogen in a separate tank, and hydrogen water can be produced efficiently.
Furthermore, since the deodorizing unit 3 is provided and the hydrogen supply pipe 6 and the hydrogen water supply pipe 7 are made of a fluororesin, hydrogen water with no odor can be produced.

  Furthermore, since the hydrogen water in the pressure vessel 1 is configured to take out hydrogen water by two-stage pressure reduction in the regulator 4 and the hydrogen water extraction section 5, hydrogen in the hydrogen water is dissipated into the air by sudden pressure reduction. To suppress.

  Furthermore, by opening the purge valve 33 when the hydrogen generation unit 2 starts generating hydrogen, the air remaining in the hydrogen generation unit 2 and the deodorizing unit 3 can be replaced with hydrogen. Air that is not used for production is prevented from being supplied to the pressure vessel 1, and hydrogen water can be produced more efficiently.

  Furthermore, when the deodorizing unit 3 is stored, it is possible to prevent invasion of germs and the like into the deodorizing unit 3 by closing the inlet side opening / closing valve and the outlet side opening / closing valve.

(Modification)
The hydrogen water manufacturing apparatus according to the modification further includes a control circuit that configures each valve with an electromagnetic valve or the like and controls the operation of each valve. Since other configurations are the same as those of the embodiment, detailed description thereof is omitted.
FIG. 5 is a block diagram illustrating a configuration example of a control device according to a modification. The control unit 101 that controls the operation of each component of the control device is, for example, a computer including a CPU (Central Processing Unit). The control unit 101 includes a ROM 102, a RAM 103, another storage unit 104, a timing unit 105, a citric acid aqueous solution supply unit 106, a magnesium hydride charging unit 127, a water level detection unit 108, and a control unit 101. The interface unit 109 is connected.

The ROM 102 is a non-volatile memory such as a mask ROM or EEPROM that stores a control program necessary for the operation of the computer.
The RAM 103 is a volatile memory such as a DRAM or SRAM that temporarily stores various data generated when the arithmetic processing of the control unit 101 is executed and a control program necessary for the operation of the computer.
The storage unit 104 is a non-volatile storage medium such as a hard disk or a semiconductor memory that stores a computer program necessary for operating the hydrogen water production apparatus. The timer unit 105 opens and closes each valve when producing hydrogen water. It is a circuit component for timing.
The citric acid aqueous solution supply unit 106 includes, for example, a storage unit that stores the citric acid aqueous solution 25. The container and the container of the hydrogen generator 2 are connected by a pipe, and an open / close valve (not shown) is interposed in the pipe. The on-off valve is configured to open and close in accordance with a control command from the control unit 101, and the citric acid aqueous solution 25 in the storage unit is supplied to the hydrogen generation unit 2.
The magnesium hydride charging unit 107 includes, for example, a tablet storage unit that stores a tablet of the magnesium hydride 24. The tablet accommodating part and the container of the hydrogen generating part 2 communicate with each other through a gate. The gate is configured to open and close the gate in accordance with a control command from the control unit 101 so that a required amount of magnesium hydride 24 can be input to the hydrogen generation unit 2.
For example, the water level detection unit 108 includes a float for detecting the water level in the pressure vessel 1, detects the water level by detecting the position of the float, and outputs the detection result to the control unit 101. It is.
The interface unit 109 includes a hydrogen supply valve 21, a deodorization tank inlet side opening / closing valve 31, a deodorization tank outlet side opening / closing valve 32, a purge valve 33, a pressure vessel opening / closing valve 11, a water injection valve 12, an exhaust valve 13, and a hydrogen water supply valve. 14 is connected. The control unit 101 controls the opening and closing of each valve by outputting a control signal via the interface unit 109.

  6 to 8 are flowcharts showing a processing procedure of the control device according to the modification. The control unit 101 closes all the valves by outputting a control signal to each valve connected to the interface unit 109 (step S101). Hereinafter, when the process of opening and closing each valve is described, the point that a control signal is output to each valve will be omitted. The control part 101 which finished the process of step S101 opens the exhaust valve 13 (step S102), and opens the water injection valve 12 (step S103). In the processes of steps S102 and 103, water injection into the pressure vessel 1 is started.

  Next, the control unit 101 determines whether or not the pressure vessel 1 is full in the water level detection unit 108 (step S104). When it determines with the pressure vessel 1 not being full (step S104: NO), the control part 101 repeatedly performs the process of step S104 until it becomes full. If it is determined that the pressure vessel 1 is full (step S104: YES), the control unit 101 closes the water injection valve 12 (step S105). Next, the control unit 101 opens the hydrogen supply valve 21, the deodorization tank inlet side opening / closing valve 31, and the purge valve 33 (step S106). Then, the control unit 101 controls the operation of the magnesium hydride input unit 107 to input the magnesium hydride 24 to the hydrogen generation unit 2 (step S107). Further, the control unit 101 controls the operation of the citric acid aqueous solution supply unit 106 to supply the citric acid aqueous solution 25 to the hydrogen generation unit 2 (step S108). In the processing from Step S106 to Step S108, the processing for purging the air in the hydrogen generating unit 2 and the deodorizing unit 3 with hydrogen is started.

  Next, the control unit 101 substitutes 1 for a variable N for counting the number of times of production of hydrogen water (step S109), and causes the time measuring unit 105 to start measuring (step S110). Then, the control unit 101 determines whether or not a predetermined purge time has elapsed since the purge was started (step S111). That is, it is determined whether or not the time measured by the time measuring unit 105 exceeds a predetermined purge time. Note that the storage unit 104 stores the predetermined purge time in advance. When it is determined that the predetermined purge time has not elapsed (step S111: NO), the control unit 101 repeatedly executes the process of step S111 until the predetermined purge time has elapsed. When it is determined that the predetermined purge time has elapsed (step S111: YES), the control unit 101 opens the deodorization tank outlet side opening / closing valve 32 and the pressure vessel opening / closing valve 11 (step S112), and closes the purge valve 33 (step S113). ), The hydrogen water supply valve 14 is opened (step S114). Next, the control unit 101 determines whether a predetermined amount of water has been drained from the pressure vessel 1 based on the detection result by the water level detection unit 108 (step S115). Here, the control unit 101 indirectly determines the discharge amount by determining whether or not the amount of water obtained by subtracting the predetermined amount from the capacity of the pressure vessel 1 remains in the pressure vessel 1. Yes. When it is determined that the predetermined amount of water has not yet been discharged (step S115: NO), the control unit 101 repeatedly executes the process of step S115 until the predetermined amount of drainage is completed. When it is determined that a predetermined amount of water has been drained (step S115: YES), the control unit 101 closes the hydrogen water supply valve 14 (step S116), and causes the time measuring unit 105 to start timing (step S117).

  Then, the control unit 101 determines whether or not a predetermined leaving time has elapsed since the start of timing (step S118). That is, it is determined whether or not the time measured by the time measuring unit 105 exceeds a predetermined leaving time. Note that the storage unit 104 stores the predetermined leaving time in advance. When it is determined that the predetermined leaving time has not elapsed (step S118: NO), the control unit 101 repeatedly executes the process of step S118 until the predetermined leaving time has elapsed. When it is determined that the predetermined leaving time has elapsed (step S118: YES), the control unit 101 opens the hydrogen water supply valve 14 (step S119). Hydrogen water is manufactured by the processes in steps S114 to S119, and the hydrogen water can be taken out. The user can take out and use the hydrogen water in the pressure vessel 1 by operating the hydrogen water extraction unit 5.

  The control unit 101 that has finished the process of step S119 determines whether or not the hydrogen water stored in the pressure vessel 1 is less than the first predetermined remaining amount, for example, less than 1 L, based on the detection result of the water level detection unit 108. Determination is made (step S120). That is, it is determined whether the remaining amount of hydrogen water is low. When it determines with the hydrogen water stored in the pressure vessel 1 being more than the 1st predetermined remaining amount (step S120: NO), the control part 101 repeatedly performs the process of step S120. In reality, when the amount of water in the pressure vessel 1 becomes less than the first predetermined remaining amount, an interrupt signal is provided to the control unit 101, and the following processing is executed using the interrupt signal as a trigger. It is better to configure as follows. When it is determined that the hydrogen water stored in the pressure vessel 1 is less than the first predetermined remaining amount (step S120: YES), the control unit 101 determines whether or not the variable N is the predetermined number of replacements ( Step S121). The predetermined number of times of replacement is the number of times of water injection so that the amount of hydrogen remaining in the pressure vessel 1 decreases, and even when the pressure vessel 1 is replenished with water, hydrogen water cannot be additionally produced. The storage unit 104 stores the predetermined number of exchanges. When it is determined that the variable N is the predetermined number of exchanges (step S121: YES), the control unit 101 notifies the replenishment of the magnesium hydride 24 and the citric acid aqueous solution 25 (step S122), and ends the process.

  When it is determined that the variable N is not the predetermined number of exchanges (step S121: NO), the control unit 101 closes the hydrogen water supply valve 14 (step S123) and opens the water injection valve 12 (step S124). Then, based on the detection result of the water level detection unit 108, the control unit 101 determines whether or not the hydrogen water stored in the pressure vessel 1 is greater than or equal to the second predetermined remaining amount, for example, 10L (step S125). ). When it is determined that the hydrogen water stored in the pressure vessel 1 is less than the second predetermined remaining amount (step S125: NO), the control unit 101 repeatedly executes the process of step S125. When it determines with the hydrogen water stored in the pressure vessel 1 being more than the 2nd predetermined remaining amount (step S125: YES), the control part 101 adds 1 to the variable N, and returns a process to step S117. Water is replenished to the pressure vessel 1 by the processing of steps S123 to S126.

  According to the hydrogen water production apparatus according to the modification, it is possible to automatically produce hydrogen water and additionally produce hydrogen water by replenishing water.

  The embodiments disclosed herein are illustrative in all respects and should not be considered as restrictive. The scope of the present invention is defined not by the above-mentioned meaning but by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Pressure vessel 2 Hydrogen generating part 3 Deodorizing part 4 Regulator 5 Hydrogen water extraction part 6 Hydrogen supply pipe 7 Hydrogen water supply pipe 8 Water injection pipe 9 Switching valve 11 Pressure vessel on-off valve 12 Water injection valve 13 Exhaust valve 14 Hydrogen water supply valve 15 Pressure Total 16 Safety valve 17 Fuel gauge 18 Check valve 21 Hydrogen supply valve 22 Pressure gauge 23 Safety valve 24 Magnesium hydride 25 Citric acid aqueous solution 31 Deodorization tank inlet side opening / closing valve 32 Deodorization tank outlet side opening / closing valve 33 Purge valve 61 First hydrogen supply Pipe 62 Second hydrogen supply pipe 101 Control unit 104 Storage unit 105 Timekeeping unit 106 Citric acid aqueous solution supply unit 107 Magnesium hydride charging unit 108 Water level detection unit

Claims (14)

A container for dissolving hydrogen in the stored water;
A hydrogen generation part for generating hydrogen by hydrolysis of magnesium hydride,
A hydrogen supply pipe for supplying hydrogen generated in the hydrogen generation section to the container;
A hydrogen water production apparatus comprising: a hydrogen water supply pipe that supplies hydrogen water obtained by dissolving pressurized hydrogen in water stored in the container to the outside. A water injection pipe for injecting water into the container;
The hydrogen water production apparatus according to claim 1, further comprising: a water injection valve that opens and closes the water injection pipe. The hydrogen water production apparatus according to claim 1, further comprising a deodorization unit that is interposed in the middle of the hydrogen supply pipe and deodorizes the hydrogen generated in the hydrogen generation unit. The hydrogen water production apparatus according to claim 3, further comprising a purge valve for purging air remaining in the hydrogen generation unit and the deodorization unit. An inlet-side on-off valve provided on the inlet side of the deodorizing unit;
The hydrogen water production apparatus according to claim 3 or 4, further comprising: an outlet-side on-off valve provided on an outlet side of the deodorizing unit. The hydrogen water production apparatus according to any one of claims 1 to 5, further comprising a regulator that is interposed in the middle of the hydrogen water supply pipe and depressurizes the hydrogen water. The hydrogen water production apparatus according to claim 6, further comprising a hydrogen water extraction unit that extracts hydrogen water decompressed by the regulator. The hydrogen water extraction part is
The hydrogen water production apparatus according to claim 7, wherein the hydrogen water is a water gun that further depressurizes and outputs the hydrogen water decompressed by the regulator. The hydrogen water production apparatus according to any one of claims 1 to 8, further comprising a fuel gauge indicating a remaining amount of hydrogen water stored in the container. The hydrogen water production apparatus according to any one of claims 1 to 9, further comprising a check valve interposed in the middle of the hydrogen supply pipe. The hydrogen water production apparatus according to any one of claims 1 to 10, further comprising a pressure gauge that measures an internal pressure of each of the hydrogen generation unit and the container. The hydrogen water production apparatus according to any one of claims 1 to 11, further comprising a hydrogen water supply valve provided in the hydrogen water supply pipe. A hydrogen water production method for producing hydrogen water using the hydrogen water production apparatus according to any one of claims 1 to 12,
Supplying water to the container until it is substantially full;
Adding magnesium hydride and water or an acidic solution to the hydrogen generation part;
And a step of discharging a predetermined amount of water from the container. The method for producing hydrogen water according to claim 13, further comprising a step of injecting water into the container in which hydrogen water is extracted and hydrogen remains.

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