Solid-state hydrogen refrigeration fan

Abstract

The present application relates to the technical field of household appliances, more particularly to a solid hydrogen refrigeration fan, comprising a hydrogen storage tank provided with a hydrogen storage cavity, a fuel cell, a driving mechanism and a fan blade; a hydrogen storage alloy is arranged in the hydrogen storage cavity, and the hydrogen storage cavity is communicated with a combustion chamber of the fuel cell through an air pipe; the fuel cell is electrically connected with the driving mechanism, the driving mechanism is used for driving the fan blade to rotate, and the hydrogen storage tank is located at one side of the fan blade from which air is blown out. The present application overcomes the deficiencies of complex structure of a compressor type refrigeration fan and troublesome use of an ice type refrigeration fan in the prior art, uses a hydrogen storage alloy as an intermediate substance to simultaneously provide a power source and a cold source for the fan, and the fan does not need an external power source, so that the structure of the fan is more simplified compared with that of a compressor refrigeration fan; and the service life of the hydrogen storage alloy used by the fan is longer than that of an ice block, so that the hydrogen storage alloy does not need to be frequently replaced to maintain the refrigeration effect, the use is more simple, and the use comfort is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, more particularly, to a solid hydrogen refrigeration fan. BACKGROUND

[0002] At present, the common fan has two refrigeration modes, which are compressor refrigeration and ice refrigeration. For example, a fan disclosed in the prior art comprises a support seat, a fan head provided on the support seat, the fan head comprising a fan blade, a front side cover provided on the front side of the fan blade, and a rear side cover provided on the rear side of the fan blade. The fan further comprises a refrigeration system having a refrigeration working mode, the refrigeration system comprising an evaporator, a condenser, an expansion valve, and a compressor. The front side cover comprises a cover body having a plurality of hollow parts. The evaporator comprises an evaporation pipe for flowing refrigerant, and at least part of the evaporation pipe is arranged on the cover body. This fan needs to use refrigerant as an intermediate substance for refrigeration, and uses a compressor to provide power for the refrigeration system. The fan has large energy consumption, is heavy, and produces large noise during use, which affects the experience of users.

[0003] The prior art also discloses a refrigeration fan, which is provided with an ice block groove in front of the fan, and a water tank is arranged below the ice block groove. The wind blown out by the fan passes through the ice block groove, and the cold air of the ice block is taken away, so that the wind can be rapidly cooled to achieve the effect of refrigeration. This fan uses ice blocks as an intermediate substance for refrigeration. However, the ice blocks melt quickly, and need to be replaced frequently, which is troublesome to use, and also needs an external power supply. SUMMARY

[0004] In view of the problems of large energy consumption, heaviness, and large noise of the compressor refrigeration fan and the trouble of using the ice refrigeration fan in the prior art, the present application provides a solid hydrogen refrigeration fan, which can generate power while refrigerating, has a simplified structure, and is easy to use.

[0005] To solve the above technical problems, the technical scheme provided by the present application is as follows:

[0006] A solid hydrogen refrigeration fan comprises a hydrogen storage tank provided with a hydrogen storage cavity, a fuel cell, a driving mechanism, and a fan blade. The hydrogen storage cavity is provided with a hydrogen storage alloy, and the hydrogen storage cavity is communicated with a combustion chamber of the fuel cell through a gas pipe. The fuel cell is electrically connected with the driving mechanism, the driving mechanism is used for driving the fan blade to rotate, and the hydrogen storage tank is located on one side of the fan blade.

[0007] In the above technical solution, the hydrogen storage alloy in the hydrogen storage tank absorbs heat at a certain temperature and releases hydrogen, the hydrogen flows into the combustion chamber of the fuel cell through the gas pipe for combustion, the electric energy generated by the fuel cell can provide electric energy for the driving mechanism, and the driving mechanism drives the fan blade to rotate to generate airflow after obtaining the electric energy; since the hydrogen storage alloy in the hydrogen storage tank is in a heat absorption state, the airflow generated by the fan blade is cooled after passing through the hydrogen storage tank, and finally cold air is obtained. The hydrogen storage alloy serves as an intermediate substance to provide power and a cold source for the fan, the fan does not need to be connected to an external power source, the structure of the fan is simpler than that of a compressor refrigeration type fan, and the service life of the hydrogen storage alloy is longer than that of ice, so that the refrigeration effect is maintained without frequent replacement of the hydrogen storage alloy, and the use is simpler.

[0008] Preferably, the driving mechanism can be a device capable of outputting torque, such as a motor and a rotary cylinder.

[0009] Preferably, a pressure reducing valve is arranged on the gas pipe. The pressure reducing valve adjusts the hydrogen pressure in the gas pipe, so that the fuel cell can obtain a stable hydrogen source in a suitable pressure range, to ensure the normal operation of the entire fan system.

[0010] Preferably, the fan further comprises a machine body, the machine body is provided with an airflow cavity, the hydrogen storage tank, the driving mechanism and the fan blade are located in the airflow cavity, an air inlet and an air outlet which are both connected to the outside of the machine body are arranged on the inner wall of the airflow cavity, and the fan blade is located between the air inlet and the hydrogen storage tank. The machine body can provide a safe and clean enclosed space for the hydrogen storage tank, the driving mechanism and the fan blade, effectively protecting these components, and the cold air can be concentrated to flow out of the air outlet, reducing the waste of cold air.

[0011] Preferably, the fuel cell can be arranged outside or inside the airflow cavity.

[0012] Preferably, the fuel cell is arranged outside the airflow cavity, and specifically, the refrigeration fan further comprises a heat insulation shell connected to the machine body, the heat insulation shell is provided with a heat insulation cavity, and the fuel cell is located in the heat insulation cavity; one end of the gas pipe is connected to the hydrogen storage tank, and the other end of the gas pipe penetrates through the heat insulation shell and is connected to the fuel cell. The heat insulation shell can insulate most of the heat generated by the fuel cell in the heat insulation cavity, reducing the influence of the heat of the fuel cell on the preparation of cold air, thereby improving the refrigeration efficiency.

[0013] Preferably, the fan further comprises a filter screen installed on the air inlet. The filter screen can effectively filter most of the dust and particulate matter sucked in during the operation of the fan blade, further protecting the components in the airflow cavity and ensuring that clean cold air is blown out of the air outlet.

[0014] In one preferred embodiment, the air inlet is arranged at the bottom end of the body, and the air outlet is arranged at the top of the body. Such a structure can be used as a portable small fan. Since the user is used to holding the side wall of the body to carry the fan, if the air inlet is arranged on the side wall of the body, it will be blocked by the user's hand and affect the air inlet. Therefore, the air inlet is arranged at the bottom end of the body, so that the user will not block the air inlet when holding the fan. Such a portable small fan has small volume and light weight, and the user can use the fan to cool himself at any time and anywhere.

[0015] In another preferred embodiment, the air inlet is arranged on the side wall of the body, and the air outlet is arranged at the top of the body. Such a structure can be used as a floor type cooling fan, and the air inlet can smoothly enter the airflow cavity from the side wall of the body without being blocked by the ground.

[0016] Preferably, the top and bottom of the hydrogen storage tank are respectively provided with a hydrogen supplement port and a hydrogen extraction port, the inner wall of the airflow cavity is provided with a first mounting port and a second mounting port, the hydrogen storage cavity is communicated to the outside of the body through the hydrogen supplement port and the first mounting port, and the hydrogen storage cavity is also communicated to the outside of the body through the hydrogen extraction port and the second mounting port; the hydrogen supplement port and the hydrogen extraction port are respectively provided with a first detachable sealing plug and a second detachable sealing plug. When the hydrogen element of the hydrogen storage alloy is consumed, the second sealing plug can be removed, and the hydrogen storage alloy in the hydrogen storage cavity can be taken out through the hydrogen extraction port. Then, the first sealing plug is removed, and the hydrogen storage alloy is supplemented to the hydrogen storage tank through the hydrogen supplement port. In this way, the hydrogen storage alloy in the hydrogen storage tank can be replaced, and the cost of using the fan in daily life is saved. It can be understood that since the hydrogen storage alloy is always accumulated at the bottom of the hydrogen storage tank, the hydrogen extraction port is arranged at the bottom of the hydrogen storage tank to facilitate the user to find the hydrogen storage alloy and quickly take out all the hydrogen storage alloy. When the hydrogen storage alloy is supplemented, the hydrogen storage alloy is also accumulated from the bottom to the top of the hydrogen storage tank. Therefore, the hydrogen supplement port needs to be arranged at the top of the hydrogen storage tank. In this way, when the hydrogen storage alloy is supplemented, the hydrogen storage alloy can be accumulated from the bottom to the top of the hydrogen storage tank, and the height of the hydrogen storage alloy is reached to the position of the hydrogen supplement port, so as to store a certain amount of hydrogen storage alloy.

[0017] Preferably, the hydrogen storage alloy is La 0.85 Ce 0.15 Ni5. Such an alloy not only releases hydrogen at room temperature, but also has a high hydrogen storage capacity of 1.55wt%, which can improve the cooling efficiency of the fan.

[0018] Preferably, the fuel cell is a proton exchange membrane fuel cell. The proton exchange membrane fuel cell is clean, has a long service life, can be used as a power supply for the fan for a long time, and has a low working temperature, which can reduce the influence of fuel cell heat dissipation on the fan cooling effect. In addition, the proton exchange membrane fuel cell has no noise during operation, which can improve the user's comfort.

[0019] Preferably, the hydrogen storage tank is made of stainless steel material or aluminum alloy material. The hydrogen storage tank made of stainless steel material has strong mechanical strength, and is resistant to heat and high temperature, and has good moisture resistance and air tightness, and is more suitable than non-metallic materials as a material for making a hydrogen storage tank. In addition to the above advantages, aluminum alloy also has strong heat conduction performance, which can further reduce the temperature of the gas flow and improve the refrigeration efficiency.

[0020] The hydrogen storage alloy is used as an intermediate substance to provide power and a cold source for the fan. The fan does not need an external power supply, and the structure is simpler than that of a compressor refrigeration fan. The hydrogen storage alloy has a longer service life than ice, and does not need to be replaced frequently to maintain the refrigeration effect, making it easier to use. The fan is green and environmentally friendly, has no pollution, is noiseless during use, and has high comfort. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of a solid hydrogen refrigeration fan embodiment 1;

[0022] Figure 2 is a structural schematic diagram of a solid hydrogen refrigeration fan embodiment 2;

[0023] Figure 3 is a structural schematic diagram of a solid hydrogen refrigeration fan embodiment 3.

[0024] In the drawings: 1-hydrogen storage tank; 101-hydrogen storage cavity; 102-hydrogen supplement port; 103-hydrogen extraction port; 2-fuel cell; 3-driving mechanism; 4-fan blade; 5-air pipe; 6-pressure reducing valve; 7-machine body; 701-air flow cavity; 702-air inlet; 703-air outlet; 704-first mounting port; 705-second mounting port; 8-filter screen; 9-first sealing plug; 10-second sealing plug; 11-nozzle; 12-heat insulation shell; 1201-heat insulation cavity. DETAILED DESCRIPTION

[0025] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0028] Example 1

[0029] like Figure 1 A solid-state hydrogen cooling fan shown includes a hydrogen storage tank 1 provided with a hydrogen storage chamber 101, a fuel cell 2, a driving mechanism 3 and fan blades 4; a hydrogen storage alloy is placed in the hydrogen storage chamber 101, and the hydrogen storage chamber 101 is connected to the combustion chamber of the fuel cell 2 through an air pipe 5; the fuel cell 2 is electrically connected to the driving mechanism 3, and the driving mechanism 3 is used to drive the fan blades 4 to rotate, and the hydrogen storage tank 1 is located on the side where the fan blades 4 outlet air.

[0030] Specifically, the driving mechanism 3 is a motor, and the electric energy generated by the fuel cell 2 is provided to the motor, which then drives the fan blades 4 to rotate.

[0031] Furthermore, a pressure reducing valve 6 is provided on the gas pipe 5. The pressure reducing valve 6 regulates the hydrogen pressure in the gas pipe 5 so that the fuel cell 2 can obtain a stable hydrogen source within an appropriate pressure range to ensure the normal operation of the entire fan system.

[0032] The working principle or workflow of this embodiment is as follows: Figure 1As shown, the hydrogen storage alloy in the hydrogen storage tank 1 absorbs heat and releases hydrogen at a certain temperature. The hydrogen flows into the combustion chamber of the fuel cell 2 through the air pipe 5 for combustion. The electric energy generated by the fuel cell 2 is provided to the driving mechanism 3. After obtaining the electric energy, the driving mechanism 3 drives the fan blades 4 to rotate to generate airflow. The arrows in the figure indicate the direction of airflow. Since the hydrogen storage alloy in the hydrogen storage tank 1 is in an endothermic state, the airflow generated by the fan blades 4 is rapidly cooled after passing through the hydrogen storage tank 1, and finally cold air is obtained.

[0033] The beneficial effects of this embodiment are as follows: using hydrogen storage alloy as an intermediate material can provide power and cooling source for the fan at the same time. The fan does not require an external power supply. Compared with the compressor cooling fan, the structure is simpler and the noise is lower. The hydrogen storage alloy has a longer service life than ice cubes. There is no need to frequently replace the hydrogen storage alloy to maintain the cooling effect. It is simpler to use and more comfortable to use.

[0034] Example 2

[0035] This embodiment is based on embodiment 1. Figure 2 As shown, the device further includes a body 7, which is provided with an airflow cavity 701. The hydrogen storage tank 1, drive mechanism 3, and fan blades 4 are all located within the airflow cavity 701. The inner wall of the airflow cavity 701 is provided with an air inlet 702 and an air outlet (not shown), both of which are connected to the exterior of the body 7. The fan blades 4 are located between the air inlet 702 and the hydrogen storage tank 1. The body 7 provides a safe and clean enclosed space for the hydrogen storage tank 1, drive mechanism 3, and fan blades 4, effectively protecting these components. Furthermore, the cool air is concentrated and discharged through the air outlet, reducing the waste of cool air.

[0036] Furthermore, the cooling fan includes an insulating shell 12 connected to the outer wall of the fuselage 7. The insulating shell 12 is provided with an insulating cavity 1201. The fuel cell 2 and the pressure reducing valve 6 are both located within the insulating cavity 1201. The adjusting hand wheel of the pressure reducing valve 6 is exposed outside the insulating shell 12 to facilitate user adjustment of the pressure reducing valve 6. One end of the air pipe 5 is connected to the hydrogen storage tank 1, and the other end of the air pipe 5 passes through the fuselage 7 and the insulating shell 12 and is connected to the fuel cell 2. The insulating shell 12 can isolate most of the heat dissipated by the fuel cell 2 within the insulating cavity 1201, reducing the impact of the heat from the fuel cell 2 on the cold air generation, thereby improving the cooling efficiency.

[0037] Specifically, the air inlet 702 is located at the bottom of the body 7, and the air outlet is located at the top of the body 7. This structure can be used as a portable small fan. Since users tend to hold the side of the body 7 to carry the fan, if the air inlet 702 is located on the side of the body 7, it will easily be blocked by the user's hand, thus reducing the amount of air entering. Therefore, the air inlet 702 is located at the bottom of the body 7. When the user holds the fan, the air inlet 702 will not be blocked. This portable small fan is small and light, and users can use it to cool down anytime and anywhere.

[0038] Specifically, the power of the fuel cell 2 is 4W.

[0039] Furthermore, a filter screen 8 is included, which is installed on the air inlet 702. The filter screen 8 can effectively filter out most of the dust and particulate matter inhaled during the operation of the fan blade 4, further protect the components in the air flow cavity 701, and ensure that clean cold air is blown out from the air outlet.

[0040] Furthermore, it also includes a nozzle 11, which is provided with a ventilation duct (not shown in the figure) connected to the air outlet 703, and the cold air flowing out of the air outlet is blown out through the ventilation duct.

[0041] Since this type of fan is small in size and it is rather troublesome to replace the hydrogen storage alloy, a detachable sealing cover (not shown in the figure) is provided on the fuselage 7. When the hydrogen element of the hydrogen storage alloy is consumed, the user can remove the sealing cover to take out the old hydrogen storage tank 1 and replace it with a new hydrogen storage tank 1.

[0042] Other features, working principles and beneficial effects of this embodiment are consistent with those of Example 1.

[0043] Example 3

[0044] This embodiment is based on embodiment 1. Figure 3 As shown, it also includes a fuselage 7, which is provided with an airflow cavity 701, in which the hydrogen storage tank 1, the pressure reducing valve 6, the driving mechanism 3 and the fan blades 4 are all located. The adjusting hand wheel of the pressure reducing valve 6 is exposed to the outside of the fuselage 7 so that the user can adjust the pressure reducing valve 6; an air inlet 702 and an air outlet 703 are provided on the inner wall of the airflow cavity 701, both of which are connected to the outside of the fuselage 7, and the fan blades 4 are located between the air inlet 702 and the hydrogen storage tank 1.

[0045] Furthermore, an insulating shell 12 is connected to the inner wall of the airflow cavity 701, and the insulating shell 12 is provided with an insulating cavity 1201, and the fuel cell 2 is located in the insulating cavity 1201; one end of the air pipe 5 is connected to the hydrogen storage tank 1, and the other end of the air pipe 5 passes through the insulating shell 12 and is connected to the fuel cell 2.

[0046] Specifically, two air inlets 702 are arranged at the bottom and top of the side wall of the body 7, and the air outlet 703 is arranged at the top of the body 7 and at the same height as one of the air inlets 702. Such a structure can be used as a floor type cooling fan, and the air inlets 702 can smoothly enter the air flow cavity 701 from the side wall of the body 7 without being blocked by the ground. Similarly, the arrow direction in the figure indicates the air flow direction. Under the drive of the fan blade 4, the air flows into the air flow cavity 701 from the air inlet 702 at the bottom of the body 7, and part of the air flows into the air flow cavity from the air inlet 702 at the top of the body 7, thereby increasing the flow rate at the top of the air flow cavity 701, reducing the pressure at the top of the air flow cavity 701, and making the air flow uniformly press toward the top of the air flow cavity 701, and finally forming greater wind power to blow out from the air outlet 703.

[0047] Further, a filter screen 8 is arranged on each of the two air inlets 702.

[0048] Specifically, the power of the fuel cell 2 is 40 W.

[0049] Further, the top and bottom of the hydrogen storage tank 1 are respectively provided with a hydrogen supplement port 102 and a hydrogen extraction port 103, the inner wall of the air flow cavity 701 is provided with a first mounting port 704 and a second mounting port 705, the hydrogen storage cavity 101 is communicated to the outside of the body 7 through the hydrogen supplement port 102 and the first mounting port 704, and the hydrogen storage cavity 101 is also communicated to the outside of the body 7 through the hydrogen extraction port 103 and the second mounting port 705; the hydrogen supplement port 102 and the hydrogen extraction port 103 are respectively provided with a detachable first sealing plug 9 and a second sealing plug 10. When the hydrogen element of the hydrogen storage alloy is consumed, the second sealing plug 10 can be removed, the hydrogen storage alloy in the hydrogen storage cavity 101 can be taken out through the hydrogen extraction port 103, and then the second sealing plug 10 is installed back to the hydrogen extraction port 103; then the first sealing plug 9 is removed, and the hydrogen storage alloy is supplemented to the hydrogen storage tank 1 through the hydrogen supplement port 102. In this way, the hydrogen storage alloy in the hydrogen storage tank 1 can be replaced, and the cost of daily use of the fan is saved. It can be understood that since the hydrogen storage alloy is always accumulated at the bottom of the hydrogen storage tank 1, the hydrogen extraction port 103 is arranged at the bottom of the hydrogen storage tank 1, so that the user can easily find the hydrogen storage alloy and quickly take out all the hydrogen storage alloy; and when the hydrogen storage alloy is supplemented, the hydrogen storage alloy is also accumulated from the bottom to the top of the hydrogen storage tank 1, so the hydrogen supplement port 102 needs to be arranged at the top of the hydrogen storage tank 1, so that when the hydrogen storage alloy is supplemented, the hydrogen storage alloy can be accumulated from the bottom to the top of the hydrogen storage tank 1, until the accumulation height of the hydrogen storage alloy reaches the position of the hydrogen supplement port 102, so as to store a certain amount of hydrogen storage alloy.

[0050] The other features, working principles and beneficial effects of the present embodiment are consistent with those of Embodiment 1.

[0051] Embodiment 4

[0052] The embodiment is based on the embodiment 2 or the embodiment 3, and more particularly, the hydrogen storage alloy is La 0.85 Ce 0.15 Ni5, which not only can release hydrogen at normal temperature, but also has a hydrogen storage capacity of 1.55wt%, and can improve the refrigeration efficiency of the fan.

[0053] Further, the fuel cell 2 is a proton exchange membrane fuel cell 2. The proton exchange membrane fuel cell 2 is clean and pollution-free, has a long service life, and can be used as a power supply for the refrigeration fan for a long time. In addition, the working temperature of the proton exchange membrane fuel cell 2 is low, which can reduce the influence of heat dissipation of the fuel cell 2 on the refrigeration effect of the fan. In addition, the proton exchange membrane fuel cell 2 does not produce noise during operation, which can improve the use comfort of the user.

[0054] Further, the hydrogen storage tank 1 is made of aluminum alloy material. The hydrogen storage tank made of aluminum alloy material has good moisture resistance and air tightness, and has good heat resistance, high temperature resistance and heat conduction performance, which can further reduce the temperature of the airflow and improve the refrigeration efficiency. Compared with non-metallic materials, the aluminum alloy material is more suitable for the preparation of the hydrogen storage tank.

[0055] The other features, working principles and beneficial effects of the embodiment are consistent with the embodiment 2 or the embodiment 3.

[0056] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A solid-state hydrogen refrigeration fan characterized by, The application relates to a hydrogen storage tank (1) provided with a hydrogen storage cavity (101), a fuel cell (2), a driving mechanism (3) and a fan blade (4); the hydrogen storage cavity (101) is provided with hydrogen storage alloy; the hydrogen storage cavity (101) is communicated with a combustion chamber of the fuel cell (2) through a gas pipe (5); the fuel cell (2) is electrically connected with the driving mechanism (3); the driving mechanism (3) is used for driving the fan blade (4) to rotate; the hydrogen storage tank (1) is located at one side of the fan blade (4) where air is discharged. A pressure reducing valve (6) is arranged on the gas pipe (5). The application further relates to a machine body (7) provided with an air flow cavity (701); the hydrogen storage tank (1), the driving mechanism (3) and the fan blade (4) are located in the air flow cavity (701); an air inlet (702) and an air outlet (703) are arranged on the inner wall of the air flow cavity (701) and communicated with the outside of the machine body (7); the fan blade (4) is located between the air inlet (702) and the hydrogen storage tank (1). The application further relates to a heat insulation shell (12) connected with the machine body (7); the heat insulation shell (12) is provided with a heat insulation cavity (1201); the fuel cell (2) is located in the heat insulation cavity (1201); one end of the gas pipe (5) is connected with the hydrogen storage tank (1); the other end of the gas pipe (5) penetrates through the heat insulation shell (12) and is connected with the fuel cell (2).

2. A solid hydrogen refrigeration fan according to claim 1, wherein, A filter screen (8) is arranged on the air inlet (702).

3. A solid hydrogen refrigeration fan as claimed in claim 1, wherein, The air inlet (702) is arranged at the bottom end of the machine body (7); the air outlet (703) is arranged at the top of the machine body (7).

4. A solid hydrogen refrigeration fan as claimed in claim 1, wherein, The air inlet (702) is arranged on the side wall of the machine body (7); the air outlet (703) is arranged at the top of the machine body (7).

5. A solid hydrogen refrigeration fan as claimed in claim 1, wherein, The top and bottom of the hydrogen storage tank (1) are respectively provided with a hydrogen supplement port (102) and a hydrogen extraction port (103); the inner wall of the air flow cavity (701) is provided with a first mounting port (704) and a second mounting port (705); the hydrogen storage cavity (101) is communicated with the outside of the machine body (7) through the hydrogen supplement port (102) and the first mounting port (704); the hydrogen storage cavity (101) is further communicated with the outside of the machine body (7) through the hydrogen extraction port (103) and the second mounting port (705); the hydrogen supplement port (102) and the hydrogen extraction port (103) are respectively provided with a first detachable sealing plug (9) and a second detachable sealing plug (10).

6. A solid hydrogen refrigeration fan as claimed in any one of claims 1 to 5, wherein, The hydrogen storage alloy is La 0.85 Ce 0.15 Ni5.

7. A solid hydrogen refrigeration fan as claimed in claim 6, wherein, The fuel cell (2) is a proton exchange membrane fuel cell (2).

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