JP6225404B1 - Hydrogen supply device - Google Patents

Abstract

A hydrogen supply apparatus having high safety is provided. A hydrogen supply device (1a) of the present disclosure includes an air flow path (2), a fan (3), a hydrogen supply source (4), a hydrogen supply device (5), and a valve (6). A hydrogen gas sensor (71) and a controller (8). The air flow path (2) has an air inlet (21) and an air outlet (22). The fan (3) creates a flow of air that flows from the air inlet (21) to the air outlet (22). The hydrogen supplier (5) has a hydrogen outlet (51) located in the air flow path (2) between the fan (3) and the air outlet (22). The valve (6) is disposed between the hydrogen outlet (51) and the hydrogen supply source (4). The hydrogen gas sensor (71) detects the hydrogen gas concentration between the fan (3) and the air inlet (21). The controller (8) performs control to close the valve (6) when the hydrogen gas concentration is a specific value or more. [Selection] Figure 1

Description

  The present disclosure relates to a hydrogen supply apparatus.

  In recent years, attention has been focused on the antioxidant action of hydrogen, and for example, treatment by drinking or injection of hydrogen-containing water and suction of hydrogen gas has been attempted in medical institutions. Also known is a technique for releasing hydrogen together with fine water droplets in order to take hydrogen into the body by inhalation or transcutaneously.

  For example, Patent Document 1 describes an ultrafine water droplet generator including a main body having a processing chamber and a discharge port, and a hydrogen / air mixed gas adjusting tank. Air passes through the processing chamber from the air inlet by driving the blower. In addition, ultrafine water droplets and negative ions are released from the outlet. The hydrogen / air mixed gas adjustment tank can accommodate a hydrogen generator and water, and at least a part of the upper part of the hydrogen / air mixed gas adjustment tank is open. The hydrogen generator is provided in the lower part of the main body on the inlet side. By driving the blower, hydrogen and air generated in the hydrogen / air mixed gas adjusting tank are sucked simultaneously, and fine water droplets containing the sucked hydrogen are discharged from the discharge port.

JP 2013-221733 A

  The ultrafine water droplet generator described in Patent Document 1 has room for improvement from the viewpoint of improving safety. Therefore, the present disclosure provides a hydrogen supply device having high safety.

This disclosure
An air flow path having an air inlet that is an inlet of room air and an air outlet;
A fan that is disposed in the air flow path and generates a flow of air flowing from the air inlet to the air outlet;
A hydrogen source;
A hydrogen supply device having a hydrogen outlet located in the air flow path between the fan and the air outlet and connected to the hydrogen supply source so as to be able to supply hydrogen toward the hydrogen outlet When,
A valve disposed between the hydrogen outlet and the hydrogen supply source in a hydrogen flow direction;
A hydrogen gas sensor installed between the fan and the air inlet for detecting the concentration of hydrogen contained in the air;
A controller that performs control to close the valve when the hydrogen gas concentration detected by the hydrogen gas sensor is equal to or higher than a specific value,
A hydrogen supply apparatus is provided.

  The above hydrogen supply device has high safety.

The figure which shows typically the hydrogen supply apparatus which concerns on 1st Embodiment of this indication. The flowchart which shows the process which the hydrogen supply apparatus of FIG. 1 performs The figure which shows typically an example of the hydrogen supply device of the hydrogen supply apparatus of FIG. The figure which shows typically the installation state of the hydrogen supply apparatus of FIG. The figure which shows typically the hydrogen supply apparatus which concerns on a modification The figure which shows typically the hydrogen supply apparatus which concerns on another modification. The figure which shows typically the hydrogen supply apparatus which concerns on 2nd Embodiment of this indication. The figure which shows typically the hydrogen supply apparatus which concerns on 3rd Embodiment of this indication.

<Knowledge based on study by the present inventor>
Hydrogen gas has a characteristic of being ignited with a small energy, and air having a specific range of hydrogen gas concentration may be ignited and burned by the addition of static energy. For this reason, it is dangerous if the hydrogen gas concentration in the space where the hydrogen gas is released or in the apparatus is within a ignitable range. In Patent Document 1, no consideration is given to controlling the ultrafine water droplet generator in consideration of the concentration of hydrogen gas in the space where the hydrogen gas is released or inside the device. The reason why such a study has not been made is that the technique described in Patent Document 1 intends to release hydrogen in a state where fine water droplets are contained, and intends to release hydrogen gas directly. This is probably because they are not.

  However, the present inventor has found that the technique described in Patent Document 1 has room for improvement from the viewpoint of improving safety. This is because there is a limit to the amount of hydrogen that can be dissolved in water at room temperature and normal pressure, and excess hydrogen may not be contained in water droplets, but may pass through the inside of the device as a gas and be released from the discharge port. is there. The present inventor has devised the hydrogen supply device of the present disclosure based on such knowledge.

The first aspect of the present disclosure is:
An air flow path having an air inlet that is an inlet of room air and an air outlet;
A fan that is disposed in the air flow path and generates a flow of air flowing from the air inlet to the air outlet;
A hydrogen source;
A hydrogen supply device having a hydrogen outlet located in the air flow path between the fan and the air outlet and connected to the hydrogen supply source so as to be able to supply hydrogen toward the hydrogen outlet When,
A valve disposed between the hydrogen outlet and the hydrogen supply source in a hydrogen flow direction;
A hydrogen gas sensor that is installed between the fan and the air inlet and detects the concentration of hydrogen gas contained in the air;
A controller that performs control to close the valve when the hydrogen gas concentration detected by the hydrogen gas sensor is equal to or higher than a specific value,
A hydrogen supply apparatus is provided.

  According to the first aspect, when the hydrogen gas concentration of the air before passing through the fan is equal to or higher than a specific value, the valve is closed and the supply of hydrogen gas into the air flow path is stopped. For this reason, for example, it is possible to prevent the hydrogen gas concentration of the air blown out from the air outlet from becoming a concentration in a ignitable range. In addition, since the hydrogen gas blown out from the hydrogen outlet does not pass through the fan, it is possible to prevent the hydrogen gas blown out from the hydrogen outlet from being exposed to static electricity generated by the fan. Further, since hydrogen gas is blown out from the hydrogen outlet toward the air flow accelerated by the fan, the hydrogen gas and air are well stirred, and the hydrogen gas concentration of the air blown out from the air outlet is spatially reduced. It tends to be uniform. As a result, the hydrogen supply device according to the first aspect has high safety.

  According to a second aspect of the present disclosure, in addition to the first aspect, the controller provides a hydrogen supply device that performs control to stop the fan after the valve is closed. According to the second aspect, it is possible to prevent hydrogen gas from being blown out from the hydrogen outlet into the air flow path in which no air flow is generated by the operation of the fan.

  In addition to the first aspect or the second aspect, the third aspect of the present disclosure further includes a temperature sensor that is installed between the fan and the air inlet and detects the temperature of the air, and the controller includes the controller Provided is a hydrogen supply device that performs control to close the valve when the temperature of air detected by a temperature sensor is equal to or higher than a specific temperature. According to the third aspect, when the temperature of the air before passing through the fan is equal to or higher than a specific temperature, the valve is closed and the supply of hydrogen gas to the inside of the air flow path is stopped. For this reason, it can prevent that hydrogen gas burns by the event which raises the temperature of air. As a result, the hydrogen supply device according to the third aspect has higher safety.

  According to a fourth aspect of the present disclosure, in addition to any one of the first aspect to the third aspect, in the air flow path, the hydrogen blow-off position in the air flow path and the position closer to the air inlet than the hydrogen blow-out opening are provided. Provided is a hydrogen supply device further comprising a pair of metal or alloy nets disposed closer to the air outlet than the outlet. According to the 4th aspect, even if a flame arises by combustion of hydrogen gas inside an air flow path, propagation of a flame can be suppressed. In addition, even if a flame is generated outside, the flame can be prevented from reaching the inside of the hydrogen supply device (particularly, the air flow path near the hydrogen outlet). For this reason, the hydrogen supply device of the fourth aspect has higher safety.

  In addition to any one of the first to fourth aspects, the fifth aspect of the present disclosure further includes an infrared sensor that observes a space for receiving the air exiting from the air outlet, and the controller includes the controller Provided is a hydrogen supply device that performs control to close the valve when an infrared sensor observes that a spot having a temperature equal to or higher than a specific temperature is present in the space. According to the fifth aspect, the valve is closed when there is a spot of a specific temperature or higher in the space that receives the air that has exited from the air outlet, and the supply of hydrogen gas to the inside of the air flow path is stopped. Accordingly, it is possible to prevent the supply of air containing hydrogen gas to a space where there is a spot having a specific temperature or higher, and it is possible to prevent hydrogen gas from burning in that space. As a result, the hydrogen supply device according to the fifth aspect has higher safety.

According to a sixth aspect of the present disclosure, in addition to any one of the first aspect to the fifth aspect, the hydrogen supply device includes a nozzle that forms the hydrogen outlet, and a distance from an outer peripheral surface of the nozzle. A hydrogen supply device including a cylindrical guide member surrounding a nozzle is provided. According to the sixth aspect, the flow of hydrogen gas blown out from the nozzle attracts the flow of air inside the guide member, and the hydrogen gas and air are mixed and blown out to the air flow path. For this reason, hydrogen gas is blown out to the air flow path in a state diluted with air. Thereby, combined with the stirring effect of the hydrogen gas accompanying the air flow in the air flow path, the hydrogen gas is blown out from the air outlet in a state of being uniformly mixed with the air. For this reason, the hydrogen gas concentration of the air blown out from the air outlet tends to be spatially uniform, and the hydrogen supply device of the sixth aspect has higher safety.

  The seventh aspect of the present disclosure provides the hydrogen supply apparatus according to any one of the first to sixth aspects, in which the hydrogen supply source is a hydrogen gas cylinder. According to the seventh aspect, hydrogen gas can be stably supplied from the hydrogen gas cylinder. In addition, replacement of the hydrogen supply source is easy.

  In an eighth aspect of the present disclosure, in addition to any one of the first to seventh aspects, the hydrogen supply source includes a hydrogen supply device that is a water decomposer that decomposes water to generate hydrogen. provide. According to the 8th aspect, compared with the case where a hydrogen gas cylinder is used as a hydrogen supply source, the operation | work which replace | exchanges a hydrogen supply source does not generate | occur | produce. In addition, since hydrogen may be generated by decomposing water according to the demand for hydrogen supply, it is not necessary to store hydrogen gas for a long period of time.

  According to a ninth aspect of the present disclosure, in addition to any one of the first aspect to the eighth aspect, a heat exchanger that is arranged in the air flow path and heat-exchanges the air flowing through the air flow path and the refrigerant. A hydrogen supply device is further provided. According to the ninth aspect, hydrogen gas can be supplied while adjusting the temperature of the air blown from the air outlet by the heat exchanger.

  A tenth aspect of the present disclosure includes an outdoor air inlet that is an inlet of outdoor air in addition to any one of the first to eighth aspects, and the position is between the fan and the air inlet. Provided is a hydrogen supply device, further comprising an outside air passage connected to an air passage, and a damper for adjusting a flow rate of outdoor air supplied from the outside air passage to the air passage. According to the tenth aspect, hydrogen gas can be supplied while adjusting the amount of outside air contained in the air blown from the air outlet.

  Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The following description relates to an example of the present invention, and the present invention is not limited to these. The dashed arrows in the accompanying drawings conceptually show the flow of air or hydrogen gas.

<First Embodiment>
As shown in FIG. 1, the hydrogen supply device 1 a includes an air flow path 2, a fan 3, a hydrogen supply source 4, a hydrogen supply device 5, a valve 6, a hydrogen gas sensor 71, and a controller 8. Yes. The air flow path 2 has an air inlet 21 that is an inlet for room air and an air outlet 22. The fan 3 is disposed in the air flow path 2 and generates an air flow that flows from the air inlet 21 to the air outlet 22. The hydrogen supply device 5 has a hydrogen outlet 51 and is connected to the hydrogen supply source 4 so that hydrogen can be supplied toward the hydrogen outlet 51. The valve 6 is disposed between the hydrogen outlet 51 and the hydrogen supply source 4 in the hydrogen flow direction. The hydrogen gas sensor 71 is installed between the fan 3 and the air inlet 21 and detects the concentration of hydrogen gas contained in the air. The controller 8 performs control to close the valve 6 when the hydrogen gas concentration detected by the hydrogen gas sensor 71 is a specific value (for example, 3%) or more. In the present specification, “%” with respect to the hydrogen gas concentration means a percentage based on volume.

  The controller 8 preferably performs control to stop the fan 3 after the valve 6 is closed. In other words, the fan 3 is preferably operating whenever the valve 6 is open.

  The hydrogen outlet 51 is located in the air flow path 2 between the fan 3 and the air outlet 22. For this reason, since the hydrogen gas blown out from the hydrogen blower outlet 51 does not pass through the fan 3, even if static electricity is generated in the fan 3, the hydrogen gas blown out from the hydrogen blower outlet 51 is generated in the fan 3. Can be prevented from being exposed to. Further, since hydrogen gas is blown out from the hydrogen outlet 51 toward the air flow accelerated by the fan 3, the hydrogen gas and the air are well stirred and the hydrogen gas concentration of the air blown out from the air outlet 22 is increased. Tends to be spatially uniform.

  If the hydrogen gas concentration is 4% or more and the mixed gas of air and hydrogen gas is charged with energy of the level of static electricity, it may be ignited. However, when the hydrogen gas concentration of the air before passing through the fan 3 is a specific value (for example, 3%) or more, the valve 6 is closed and the supply of the hydrogen gas to the air flow path 2 is stopped. For this reason, it can prevent that the hydrogen gas density | concentration in the air which blows off from the air outlet 22 becomes the density | concentration of the range which can be ignited. Thereby, the hydrogen supply apparatus 1a has high safety.

  The valve 6 is, for example, an open / close valve such as an electromagnetic valve or a valve capable of adjusting the opening degree such as an electric valve. In the present specification, “closing the valve 6” is a concept including minimizing the opening degree of the valve 6 which is an electric valve. The valve 6 is connected to the controller 8 so as to receive a control signal from the controller 8.

  As the hydrogen gas sensor 71, for example, a known hydrogen gas sensor such as a catalytic combustion gas sensor, a semiconductor gas sensor, or a thermoelectric gas sensor can be used. The hydrogen gas sensor 71 desirably has high sensitivity in a specific range (for example, 4% or less) of the hydrogen gas concentration. The hydrogen gas sensor 71 is typically a thermoelectric gas sensor. If a thermoelectric gas sensor is used as the hydrogen gas sensor 71, the concentration of hydrogen gas in the air can be accurately detected in the range of about 0.5 ppm (parts per million) to about 5% hydrogen gas concentration. The hydrogen gas sensor 71 is connected to the controller 8 by wire or wireless so that the controller 8 can receive information indicating the detection result of the hydrogen gas concentration detected by the hydrogen gas sensor 71.

  As shown in FIG. 1, for example, the hydrogen supply device 1 a further includes a temperature sensor 72. The temperature sensor 72 is installed between the fan 3 and the air inlet 21 and detects the temperature of the air. The controller 8 performs control to close the valve 6 when the temperature of the air detected by the temperature sensor 72 is equal to or higher than a specific temperature (for example, 40 ° C.). Thereby, when the temperature of the air before passing through the fan 3 is equal to or higher than a specific temperature (for example, 40 ° C.), the valve 6 is closed and the supply of hydrogen gas to the air flow path 2 is stopped. It is possible to prevent hydrogen gas from burning due to an event of increasing the temperature of the air. As a result, the hydrogen supply device 1a has higher safety. The temperature sensor 72 is a known temperature sensor including a detection element such as a thermocouple or a resistance temperature detector. The temperature sensor 72 is connected to the controller 8 by wire or wireless so that the controller 8 can receive information indicating the detection result of the air temperature detected by the temperature sensor 72.

  The controller 8 is, for example, a computer including an interface, an arithmetic device such as a CPU, a main storage device such as a RAM or a ROM, and an auxiliary storage device such as a hard disk drive. The hydrogen supply device 1a executes, for example, the process shown in FIG.

  For example, when the controller 8 receives information including an instruction for starting the operation of the hydrogen supply apparatus 1a, the processing shown in FIG. 2 is started. First, in step S101, the fan 3 is operated. For example, the fan 3 is connected to the controller 8 so as to be able to receive a control signal from the controller 8, and in step S101, the fan 3 receives the control signal from the controller 8 and starts operating. At this time, the valve 6 is closed. Next, it progresses to step S102 and the controller 8 judges whether predetermined time (for example, 5 second) passed since the operation | movement start of the fan 3. FIG. Thereby, the flow of the air in the air flow path 2 is developed into a state suitable for the stirring of the hydrogen gas from the hydrogen outlet 51. When the determination result in step S102 is Yes, the process proceeds to step S103, and the controller 8 acquires data indicating the hydrogen gas concentration Ch detected by the hydrogen gas sensor 71. Next, the controller 8 proceeds to step S104, and acquires data indicating the temperature Ta of the air detected by the temperature sensor 72. Next, proceeding to step S105, the controller 8 determines whether or not at least one of the conditions Ch ≧ 3% and Ta ≧ 40 ° C. is satisfied.

  When the determination result in step S105 is Yes, the process proceeds to step S151, and the controller 8 transmits a control signal for closing the valve 6 to the valve 6 to close the valve 6. For example, the opening degree of the valve 6 is set to 0%. When the valve 6 is closed, the valve 6 is kept closed. Thereby, supply of hydrogen gas to the air flow path 2 is stopped. In step S152, the controller 8 determines whether or not a predetermined time (for example, 5 seconds) has elapsed since the valve 6 was closed. If the determination result in step S152 is Yes, the process proceeds to step S153, and the fan 3 is stopped. For example, a control signal for stopping the fan 3 is sent from the controller 8 to the fan 3 and the fan 3 stops. As a result, a series of processing ends.

  When the determination result in step S105 is No, the process proceeds to step S106, and the controller 8 determines whether or not there is a request to stop the operation of the hydrogen supply device 1a. For example, the controller 8 determines whether or not information requesting to stop the operation of the hydrogen supply device 1a is input. When the determination result in step S105 is Yes, as described above, after the processing of step S151 to step S153 is performed, the series of processing ends.

  When the determination result in step S106 is No, the process proceeds to step S107, and the controller 8 determines the opening degree of the valve 6 based on the hydrogen gas concentration Ch. For example, as shown in Table 1, the storage device of the controller 8 stores a table indicating the relationship between the hydrogen gas concentration Ch and the opening degree of the valve 6. For example, the controller 8 determines the opening degree of the valve 6 with reference to this table. Instead, the controller 8 stores a mathematical expression indicating the relationship between the hydrogen gas concentration Ch and the opening degree of the valve 6, and even if the opening degree of the valve 6 is continuously determined using this mathematical expression. Good.

  Next, it progresses to step S108, and the controller 8 transmits a control signal to the valve 6 according to the opening degree of the valve 6 determined by step S107, and adjusts the opening degree of the valve 6. FIG. Thereby, an amount of hydrogen gas corresponding to the opening degree of the valve 6 is blown out from the hydrogen outlet 51 to the air flow path 2. Thereafter, the process returns to step S103.

  As shown in FIG. 1, for example, the hydrogen supply apparatus 1a further includes a pair of nets 11 made of metal or alloy. The pair of nets 11 are arranged at a position closer to the air inlet 21 than the hydrogen outlet 51 in the air channel 2 and a position closer to the air outlet 22 than the hydrogen outlet 51 in the air channel 2. Agitation of air and hydrogen gas is promoted by the net 11 disposed in the air flow path 2 at a position closer to the air outlet 22 than to the hydrogen outlet 51. Moreover, even if a flame is generated by the combustion of hydrogen gas in the air flow path 2, the pair of nets 11 suppresses the propagation of the flame. Thereby, the hydrogen supply apparatus 1a has high safety.

  As shown in FIG. 1, for example, the hydrogen supply device 1 a further includes an infrared sensor 73. The infrared sensor 73 observes a space for receiving air that has exited from the air outlet 22. The infrared sensor 73 is connected to the controller 8 by wireless or wired so that the controller 8 can receive information indicating the observation result of the infrared sensor 73. The controller 8 performs control to close the valve 6 when it is observed by the infrared sensor 73 that a spot having a specific temperature (for example, 80 ° C.) or higher is present in the space that receives the air exiting from the air outlet 22. For example, in the hydrogen supply device 1a, when the infrared sensor 73 observes that there is a spot of a specific temperature or higher during the process of any of the above steps S101 to S108, The process is interrupted, and the processes in steps S151 to S153 are forcibly performed. Accordingly, it is possible to prevent the supply of air containing hydrogen gas to a space where a spot having a specific temperature or higher exists, and to prevent the hydrogen gas from burning in the space.

  The hydrogen blower outlet 51 is disposed in the air flow path 2 below, for example, an axis line along the air flow direction of the air flow path 2. In this case, hydrogen gas tends to be blown out toward the center of the air flow path 2 where the air flow rate is relatively high. Thereby, hydrogen gas and air can be stirred favorably. Further, in the air flow path 2, a plurality of hydrogen outlets 51 may be arranged at predetermined intervals in the circumferential direction. Thereby, the hydrogen gas concentration tends to be spatially uniform in the air flow path 2.

  As shown in FIG. 3, for example, the hydrogen supplier 5 includes a nozzle 53 that forms a hydrogen outlet 51 and a guide member 55. The guide member 55 is a cylindrical member that surrounds the nozzle 53 away from the outer peripheral surface of the nozzle 53. Both ends of the guide member 55 are open. An annular gap is formed between the inner peripheral surface of the guide member 55 and the outer peripheral surface of the nozzle 53. When hydrogen gas is blown out from the nozzle 53, the flow of hydrogen gas attracts the flow of air inside the guide member 55, and is blown out to the air flow path 2 in a state where the hydrogen gas and air are mixed. Thereby, combined with the stirring effect of the hydrogen gas accompanying the air flow in the air flow path, the hydrogen gas is blown out from the air outlet 22 in a state of being uniformly mixed with the air. For this reason, the hydrogen gas concentration of the air blown out from the air outlet 22 tends to be spatially uniform. As a result, the hydrogen supply device 1a has high safety.

  In the hydrogen supply device 1a, the hydrogen supply source 4 is a hydrogen gas cylinder 41 as shown in FIG. In this case, hydrogen gas can be stably supplied from the hydrogen gas cylinder 41 toward the air flow path 2, and replacement of the hydrogen supply source 4 is easy. For example, the outlet of the hydrogen gas cylinder 41 and the hydrogen supplier 5 are connected by a flow path 45. The valve 6 is disposed in the flow path 45, for example.

  The hydrogen supply device 1a is fixed to the ceiling C of the indoor space R with a predetermined jig, for example, as shown in FIG. Thereby, air sucked into the air flow path 2 from the air inlet 21 by the operation of the fan 3 near the ceiling of the indoor space R flows through the air flow path 2 toward the air outlet 22. The hydrogen gas blown out from the hydrogen outlet 51 and the air flowing through the air passage 2 are agitated in the air passage 2, and air containing hydrogen gas is supplied to the indoor space R through the air outlet 22. Hydrogen gas diffuses rapidly in the indoor space R, and the hydrogen gas concentration in the indoor space R becomes uniform. If the concentration of the hydrogen gas is high, the hydrogen gas is light, so that it is difficult to spread to a low position in the indoor space R. However, since hydrogen gas is supplied to the indoor space R in a state diluted with air in the air flow path 22, the density of the mixed gas of the air and hydrogen gas blown out from the air outlet 22 is the air in the indoor space R. The density is almost the same. For this reason, the air containing hydrogen gas is likely to reach a low position in the indoor space R.

  In step S107, the controller 8 may determine the opening degree of the valve 6 and determine the rotational speed of the fan 3 based on the hydrogen gas concentration Ch. For example, the controller 8 determines when the rotation speed of the fan 3 determined when the hydrogen gas concentration Ch is the first concentration is the second concentration where the hydrogen gas concentration Ch is lower than the first concentration. The rotational speed of the fan 3 is determined so as to be lower than the rotational speed of the fan 3 to be operated. In this case, in step S108, the controller 8 adjusts the rotational speed of the fan 3 by transmitting a control signal to the fan 3 according to the rotational speed of the fan 3 determined in step S107 while adjusting the opening degree of the valve 6. To do. Thereby, when the hydrogen gas concentration Ch is relatively high, the rotational speed of the fan 3 becomes relatively low. For example, when the indoor space is heated, such as in winter, the user's thermal feeling is more easily maintained when the flow velocity of the air flow in the indoor space R is smaller. For this reason, according to such adjustment of the rotation speed of the fan 3, when the hydrogen gas concentration Ch is relatively high, the user's thermal feeling is easily maintained.

  The hydrogen supply device 1 a may use, for example, a hydrogen supply source for supplying hydrogen to the fuel cell power generation facility as the hydrogen supply source 4.

(Modification)
The hydrogen supply device 1a can be changed from various viewpoints. For example, the hydrogen supply device 1a may be changed to a hydrogen supply device 1b shown in FIG. The hydrogen supply device 1b is configured in the same manner as the hydrogen supply device 1a unless otherwise described. The same or corresponding components of the hydrogen supply apparatus 1b as those of the hydrogen supply apparatus 1a are denoted by the same reference numerals, and detailed description thereof is omitted. The description regarding the hydrogen supply apparatus 1a also applies to the hydrogen supply apparatus 1b unless there is a technical contradiction.

  In the hydrogen supply device 1b, the hydrogen supply source 4 is a water decomposer 42. The water decomposer 42 decomposes water to generate hydrogen. In this case, compared with the case where the hydrogen gas cylinder 41 is used as the hydrogen supply source 4, the work of replacing the hydrogen supply source does not occur. Moreover, it is only necessary to decompose water to generate hydrogen according to the demand for hydrogen supply to the hydrogen supply device 1b, so that it is not necessary to store hydrogen gas for a long time.

  For example, an electrolytic solution containing water is accommodated in the water decomposer 42, and an anode and a cathode are immersed in the electrolytic solution. As shown in FIG. 5, the water separator 24 is electrically connected to the solar cell 47 by, for example, a power line 47a. For this reason, a predetermined potential difference can be generated between the anode and the cathode inside the water decomposer 42 by the electricity generated in the solar cell 47, and water can be electrolyzed. Thereby, hydrogen gas is generated inside the water decomposer 42. The water separator 42 is connected to the hydrogen supplier 5 by a flow path 45. For this reason, the hydrogen gas generated inside the water splitting device 42 is supplied to the air flow path 2 from the hydrogen outlet 51 through the flow path 45. In this case, the water decomposing unit 42 may generate hydrogen using the power generated in the solar battery 47 that is surplus with respect to the power demand for the equipment other than the hydrogen supply device 1b. Thereby, it is not necessary to generate electric power specially to operate the water decomposer 42.

  The water decomposer 42 is typically installed outside the indoor space, but may be arranged inside the indoor space or behind the ceiling of the indoor space. As a power source for operating the water decomposer 42, a power source other than a solar cell may be used.

  The hydrogen supply device 1a or the hydrogen supply device 1b may be changed like a hydrogen supply device 1c shown in FIG. The hydrogen supply device 1c is configured in the same manner as the hydrogen supply device 1a or the hydrogen supply device 1b, unless otherwise specified. The description regarding the hydrogen supply device 1a or the hydrogen supply device 1b also applies to the hydrogen supply device 1c as long as there is no technical contradiction. In FIG. 6, the air supply source 4 is omitted.

  As shown in FIG. 6, the hydrogen supply device 1 c includes a housing 10 c in which the air inlet 21 and the air outlet 22 are formed on substantially the same plane. The housing 10c has a shape suitable for being fitted into an opening formed in the ceiling C of the indoor space. The internal space of the housing 10 c is divided into an air flow path 2 and a machine room 25 by a partition wall 40. Inside the machine room 25, a valve 32, a controller 8, and a motor 32 for rotating the fan 3 are arranged. The motor 32 is connected to the controller 8 so that, for example, a control signal for controlling the motor 32 can be received from the controller 8. A partition plate 42 extending toward the partition wall 40 is disposed at the boundary between the air inlet 21 and the air outlet 22. The air flow path 2 is divided into a space upstream of the fan 3 and a space downstream of the fan 3 in the air flow by the partition plate 42. The air supply source 4 is disposed, for example, outside the housing 10c. When the housing 10c is fitted into an opening formed in the ceiling C of the indoor space, the air inlet 21 and the air outlet 22 are positioned at substantially the same height as the ceiling C.

  When the fan 3 operates, the air in the indoor space is sucked upward from the air inlet 21 into the air flow path 2, and the air containing hydrogen gas is blown downward toward the indoor space. Thereby, hydrogen gas can be sent to the low position of indoor space. In addition, the hydrogen supply device 1c is less noticeable in the indoor space.

Second Embodiment
Next, the hydrogen supply device 1d according to the second embodiment will be described. The hydrogen supply device 1d is configured in the same manner as the hydrogen supply device 1a unless otherwise described. The same or corresponding components of the hydrogen supply apparatus 1d as those of the hydrogen supply apparatus 1a are denoted by the same reference numerals, and detailed description thereof is omitted. The description regarding the first embodiment also applies to the second embodiment unless there is a technical contradiction.

  As shown in FIG. 7, the hydrogen supply device 1 d includes a heat exchanger 13. The heat exchanger 13 is disposed in the air flow path 2 and exchanges heat between the air flowing through the air flow path 2 and the refrigerant. The heat exchanger 13 is, for example, a fin tube heat exchanger. The hydrogen supply device 1d can supply hydrogen gas while adjusting the temperature of the air blown from the air outlet 22 by the heat exchanger 13. In other words, the hydrogen supply device 1d has two functions of hydrogen supply and air conditioning.

  The heat exchanger 13 is connected to an outdoor unit (not shown) by piping. A compressor, an outdoor heat exchanger, and an expansion valve are accommodated inside the outdoor unit, and a refrigeration cycle is formed by the heat exchanger 13, the compressor, the outdoor heat exchanger, and the expansion valve. . As the refrigerant of the refrigeration cycle, a refrigerant known as a refrigerant of the refrigeration cycle of the air conditioner can be used.

<Third Embodiment>
Next, the hydrogen supply device 1e according to the third embodiment will be described. The hydrogen supply device 1e is configured in the same manner as the hydrogen supply device 1a unless otherwise described. The same reference numerals are given to the same or corresponding components of the hydrogen supply device 1a as those of the hydrogen supply device 1a, and detailed description thereof will be omitted. The description regarding the first embodiment also applies to the third embodiment unless there is a technical contradiction.

  As shown in FIG. 8, the hydrogen supply device 1 e further includes an outside air flow path 9 and a damper 15. The outdoor air flow path 9 has an outdoor air inlet 91 that is an inlet of outdoor air, and is connected to the air flow path 2 at a position between the fan 3 and the air inlet 21. The damper 15 is a valve that adjusts the flow rate of outdoor air supplied from the outside air passage 9 to the air passage 2.

  For example, the damper 15 is disposed at a connection position between the outside air passage 9 and the air passage 2. For example, the damper 15 is attached to the inner peripheral surface of a duct that forms the air flow path 2 and the outside air flow path 9 so as to be rotatable about the pivot axis. When it is necessary to increase the flow rate of the outdoor air supplied to the air flow path 2, the damper 15 is rotated around the pivot axis so that the tip of the damper 15 moves away from the external air flow path 9. In this case, the damper 15 reduces the flow rate of the indoor air that passes through the air inlet 21 and flows through the air flow path 2 toward the fan 3. Further, when it is necessary to reduce the flow rate of the outdoor air supplied to the air flow path 2, the damper 15 is rotated around the pivot axis so that the tip of the damper 15 approaches the outdoor air flow path 9. In this case, the flow rate of the room air flowing through the air flow path 2 toward the fan 3 through the air inlet 21 is increased by the damper 15. As described above, the damper 15 can adjust the ratio between the flow rate of the indoor air and the flow rate of the outdoor air in the flow of air flowing through the air flow path 2 toward the fan 3.

  The hydrogen supply device 1e can supply hydrogen gas while ventilating the indoor space R. In other words, the hydrogen supply device 1e has two functions of hydrogen supply and ventilation.

  For example, the hydrogen gas sensor 71 detects the concentration of hydrogen gas contained in the air between the connection position of the air flow path 2 to the outside air flow path 9 and the fan 3. The hydrogen gas sensor 71 detects, for example, the hydrogen gas concentration of air in a state where outdoor air and indoor air are mixed. In this case, the hydrogen gas concentration detected by the hydrogen gas sensor 71 is likely to be lowered by the outdoor air. For this reason, compared with the case where ventilation is performed independently of hydrogen supply, more hydrogen gas can be blown out from the hydrogen blower outlet 51, and more hydrogen gas can be supplied to the indoor space R. FIG. Moreover, the temperature sensor 72 detects the temperature of air between the connection position with the outside air flow path 9 in the air flow path 2 and the fan 3, for example.

  As shown in FIG. 8, the air inlet 21 and the air outlet 22 are formed in, for example, the ceiling C of the indoor space R. Moreover, the air flow path 2 and the outside air flow path 9 are formed in the back of the ceiling of the indoor space R, for example. One of the pair of nets 11 is disposed, for example, between the connection position of the air flow path 2 with the outside air flow path 9 and the fan 3. In this case, even if a flame is generated by the combustion of hydrogen gas in the air flow path 2, in addition to suppressing the propagation of the flame toward the air inlet 21, the flame propagates toward the outside air inlet 91. Can be suppressed.

DESCRIPTION OF SYMBOLS 1a-1e Hydrogen supply apparatus 2 Air flow path 3 Fan 4 Hydrogen supply source 5 Hydrogen supply 6 Valve 8 Controller 9 Outside air flow path 11 A pair of net | network 13 Heat exchanger 15 Damper 21 Air inlet 22 Air outlet 41 Hydrogen gas cylinder 42 Water Decomposer 51 Hydrogen outlet 53 Nozzle 55 Guide member 71 Hydrogen gas sensor 72 Temperature sensor 73 Infrared sensor 91 Outside air inlet

Claims (10)

An air flow path having an air inlet that is an inlet of room air and an air outlet;
A fan that is disposed in the air flow path and generates a flow of air flowing from the air inlet to the air outlet;
A hydrogen source;
A hydrogen supply device having a hydrogen outlet located in the air flow path between the fan and the air outlet and connected to the hydrogen supply source so as to be able to supply hydrogen toward the hydrogen outlet When,
A valve disposed between the hydrogen outlet and the hydrogen supply source in a hydrogen flow direction;
A hydrogen gas sensor that is installed between the fan and the air inlet and detects the concentration of hydrogen gas contained in the air;
A temperature sensor installed between the fan and the air inlet for detecting the temperature of the air;
Wherein when the hydrogen gas concentration detected by the hydrogen gas sensor have line control to close the valve when it is a specific value or more, and the temperature of the air detected by the temperature sensor is a specific temperature or higher A controller for performing control to close the valve , and
Hydrogen supply device. An infrared sensor for observing a space for receiving air from the air outlet;
2. The hydrogen supply device according to claim 1, wherein the controller performs control to close the valve when it is observed by the infrared sensor that a spot having a specific temperature or more is present in the space. An air flow path having an air inlet that is an inlet of room air and an air outlet;
A fan that is disposed in the air flow path and generates a flow of air flowing from the air inlet to the air outlet;
A hydrogen source;
A hydrogen supply device having a hydrogen outlet located in the air flow path between the fan and the air outlet and connected to the hydrogen supply source so as to be able to supply hydrogen toward the hydrogen outlet When,
A valve disposed between the hydrogen outlet and the hydrogen supply source in a hydrogen flow direction;
A hydrogen gas sensor that is installed between the fan and the air inlet and detects the concentration of hydrogen gas contained in the air;
An infrared sensor for observing a space for receiving air from the air outlet;
When the hydrogen gas concentration detected by the hydrogen gas sensor is higher than a specific value, the valve is controlled to be closed, and when the infrared sensor observes that there is a spot having a specific temperature or higher in the space. And a controller for controlling the closing of the valve.
Hydrogen supply device. The hydrogen supply device according to any one of claims 1 to 3 , wherein the controller performs control to stop the fan after the valve is closed. Wherein it is arranged at a position closer to the air outlet than the position and the hydrogen outlet close to the air inlet than hydrogen outlet, further comprising a pair of mesh made of a metal or alloy of claim 1-4 The hydrogen supply device according to any one of the above.   6. The hydrogen supply device according to claim 1, wherein the hydrogen supplier includes a nozzle that forms the hydrogen outlet, and a cylindrical guide member that surrounds the nozzle away from the outer peripheral surface of the nozzle. The hydrogen supply device described.   The hydrogen supply apparatus according to any one of claims 1 to 5, wherein the hydrogen supply source is a hydrogen gas cylinder.   The hydrogen supply apparatus according to claim 1, wherein the hydrogen supply source is a water decomposer that decomposes water to generate hydrogen.   The hydrogen supply device according to claim 1, further comprising a heat exchanger that is disposed in the air flow path and exchanges heat between the air flowing through the air flow path and the refrigerant. An outdoor air passage that is an outdoor air inlet, and is connected to the air flow passage at a position between the fan and the air inlet;
A damper that adjusts the flow rate of outdoor air supplied from the outside air flow path to the air flow path;
The hydrogen supply device according to any one of claims 1 to 8.

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