WO2003106899A1

WO2003106899A1 - Hydrogen absorbing alloy, hydrogen absorbing alloy unit, heat pump using hydrogen absorbing alloy, and hydrogen compressing device

Info

Publication number: WO2003106899A1
Application number: PCT/JP2003/006849
Authority: WO
Inventors: 信義辻
Original assignee: Ｉｐトレーディング・ジャパン株式会社
Priority date: 2002-01-10
Filing date: 2003-05-30
Publication date: 2003-12-24
Also published as: JP2004205197A; US20040231823A1

Abstract

A hydrogen absorbing alloy unit, comprising a heat exchange chamber allowing heating medium source to flow therein, a pair of hydrogen chambers formed on both sides of the heat exchange chamber, and a group of pairs of hydrogen absorbing alloy pipes having one end parts positioned in the pair of hydrogen chambers and fixed to the pair of hydrogen chamber sides and the other end parts extending into the heat exchange chamber in free state, wherein the hydrogen absorbing alloy pipes forming the group of the pairs of hydrogen absorbing alloy pipes contain a hydrogen absorbing alloy therein, and the free end parts thereof in the heat exchange chamber are closed, and hydrogen flow holes are opened at the inside end parts of the hydrogen chambers.

Description

Specification

Hydrogen storage alloy, hydrogen storage alloy unit, heat pump and hydrogen compression device using hydrogen storage alloy

The present invention relates to a hydrogen storage alloy, a hydrogen storage alloy unit, and a heat pump and a hydrogen compression device using the hydrogen storage alloy. Background art

Conventionally, when multiple hydrogen storage alloys were used, a heat medium source and a hydrogen extraction channel had to be provided for each hydrogen storage alloy. Had to be prepared. There was also a large heat loss when switching between heating and cooling of the hydrogen storage alloy. Furthermore, when the hydrogen storage alloy was fixedly arranged, the container containing the hydrogen storage alloy was sometimes damaged due to expansion during hydrogenation of the hydrogen storage alloy.

On the other hand, it was difficult to achieve ultra-low temperatures in conventional heat pumps using hydrogen storage alloys, and large-scale equipment had to be used to achieve it.

Further, in the conventional hydrogen compressor, it was difficult to achieve high compression because hydrogen leaked easily from the gap between the piston ring of the compressor and the inner wall of the cylinder.

In addition, when a powdery hydrogen storage alloy is used, when the container containing the hydrogen storage alloy vibrates, the vibration causes the internal hydrogen storage alloy to be biased, causing the hydrogen storage alloy to expand due to expansion during hydrogenation. The container containing the alloy was sometimes damaged.

Related technologies include, for example, JP-A-2-110263, JP-A-60-9839, JP200-549926, Japanese Patent Application Laid-Open No. 63-1616-1368, Japanese Utility Model Registration No. 25288621, U.S. Patent No. 4,609,038, Japanese Patent Laid-Open No. No. 02, Japanese Patent Application Laid-Open No. 2-1880841, etc. Can be Disclosure of the invention

The present invention has been made in view of the above circumstances, and a first object of the present invention is to make the apparatus compact, and to reduce heat loss during switching while heating and cooling the hydrogen storage alloy while accelerating heat propagation. An object of the present invention is to provide a hydrogen storage alloy unit that is less likely to damage a container housing the hydrogen storage alloy due to expansion during hydrogenation of the hydrogen storage alloy.

A second object of the present invention is to provide a heat pump capable of achieving an extremely low temperature with a compact configuration.

A third object of the present invention is to provide a hydrogen compression device capable of compressing hydrogen at a higher pressure.

A fourth object of the present invention is to provide a hydrogen storage alloy device in which a hydrogen storage alloy accommodated in a container is not biased by vibration.

In order to solve the above problems, a first aspect of the present invention is a hydrogen storage alloy, in which a powder of a eutectic mixture of a hydrogen storage alloy material and a hydrogen storage material is mixed with a viscous substance to form a paste. I have.

A second aspect of the present invention is a hydrogen storage alloy unit, comprising a heat exchange chamber through which a heat medium source flows, a pair of hydrogen chambers formed on both sides of the heat exchange chamber, and a pair of hydrogen chambers. One end faces each other, the other end extends into the heat exchange chamber in a free state, and a pair of hydrogen storage alloy pipes having a pair of hydrogen storage alloy pipes each having one end fixed to the pair of hydrogen chambers is provided. Each hydrogen storage alloy pipe constituting the alloy pipe group has a hydrogen storage alloy inside, the free end inside the heat exchange chamber is closed, and a hydrogen flow hole opens at the end inside the hydrogen chamber. It is characterized by doing.

The hydrogen storage alloy pipes forming a pair are preferably arranged in a honeycomb shape, and the dissociation pressure of the hydrogen storage alloy inside the pipes is made different so that a common heat medium source can simultaneously store and release hydrogen. It becomes feasible.

Each of the hydrogen storage alloy pipes was attached in paste form between a pound material made of a porous material having a hydrogen passage hole at the center and a shell material between the pound material and the outer shell pipe. It is preferable in terms of production to have a hydrogen storage alloy paste to be solidified later.

Further, it is preferable that carbon fibers or carbide fibers are wound around the outer periphery of the hydrogen storage alloy pipe.

Further, a third aspect of the present invention is a heat pump, comprising: a first hydrogen storage alloy device including a first hydrogen storage alloy having a predetermined dissociation pressure; and a second hydrogen storage device having a higher dissociation pressure than the first hydrogen storage alloy. A second hydrogen storage alloy device having a hydrogen storage alloy, a third hydrogen storage alloy device having a third hydrogen storage alloy having a higher dissociation pressure than the second hydrogen storage alloy, and a higher dissociation pressure than the third hydrogen storage alloy. A second hydrogen storage alloy device having a fourth hydrogen storage alloy device, wherein the second hydrogen storage alloy device and the third hydrogen storage alloy device form one unit, and the unit is a second hydrogen storage alloy device. A first hydrogen storage alloy pipe group having a first hydrogen storage alloy pipe, a first hydrogen chamber to which one end of the first hydrogen storage alloy pipe is fixed, a second hydrogen storage alloy pipe group having a third hydrogen storage alloy pipe, and a second hydrogen storage alloy Second water to which the end of the alloy pipe is fixed And the other end of the second hydrogen storage alloy pipe and the other end of the third hydrogen storage alloy pipe are arranged in a common heat exchange chamber, and the first hydrogen storage alloy device is a second hydrogen storage alloy device and The fourth hydrogen storage alloy device communicates with one of the third hydrogen storage alloy devices, and the fourth hydrogen storage alloy device communicates with the other of the second hydrogen storage alloy device and the third hydrogen storage alloy device, and the first hydrogen storage alloy device through By heating or cooling one of the fourth hydrogen storage alloy devices, the first hydrogen storage alloy device and the fourth hydrogen storage alloy device transfer hydrogen to the unit, respectively.

In the above heat pump, the second hydrogen storage alloy device and the fourth hydrogen storage alloy device are passed through a pump capable of transferring hydrogen from the fourth hydrogen storage alloy device to the second hydrogen storage alloy device. Is preferred.

It is preferable that a single-pong fiber or a carbide fiber is wound around the outer periphery of the hydrogen storage alloy pipe used in the heat pump.

A fourth aspect of the present invention is a heat pump, comprising: a first hydrogen storage alloy device including a first hydrogen storage alloy having a predetermined dissociation pressure; and a second hydrogen storage device having a lower dissociation pressure than the first hydrogen storage alloy. A second hydrogen storage alloy device having a storage alloy, a third hydrogen storage alloy device having a third hydrogen storage alloy having a lower dissociation pressure than the first hydrogen storage alloy, and a same dissociation pressure as the first hydrogen storage alloy Fourth hydrogen storage with fourth hydrogen storage alloy An alloy device, wherein the first hydrogen storage alloy device and the second hydrogen storage alloy device form a first system connected by a pump unit, and the third hydrogen storage alloy device and the fourth hydrogen storage alloy device A second system connected by the pump unit is formed. In the first and second systems, the first hydrogen storage alloy device is heated or cooled, and the first hydrogen storage device is operated by operating the pump unit. Transfer of hydrogen is performed in the opposite directions between the alloy device and the second hydrogen storage alloy device, and between the third hydrogen storage alloy device and the fourth hydrogen storage alloy device.

A fifth aspect of the present invention is a hydrogen compression apparatus, comprising: a hydrogen storage alloy obtained by mixing powder of a eutectic mixture of a hydrogen storage alloy material and a hydrogen storage material with a viscous substance; A hydrogen storage alloy device capable of exchanging heat with the hydrogen storage alloy device, and a hydrogen storage container communicating with the hydrogen storage alloy device via a pump. By operating to transfer hydrogen from the hydrogen storage alloy device to the hydrogen storage container, the hydrogen is compressed and stored in the hydrogen storage container. A sixth aspect of the present invention is a hydrogen compression apparatus, comprising: a hydrogen storage alloy apparatus having a hydrogen storage alloy; and a first pressure vessel and a second pressure vessel, each of which is switchably connected to the hydrogen storage alloy apparatus. A hydrogen storage alloy device comprising: a pump connected to both the first pressure container and the second pressure container and capable of transferring a fluid; and a hydrogen storage container connected to each of the first pressure container and the second pressure container. To transfer hydrogen released from the hydrogen storage alloy to one of the first pressure vessel and the second pressure vessel, and from one of the first pressure vessel and the second pressure vessel to which hydrogen has been transferred. By operating the pump to transfer the fluid to the other side, the hydrogen is compressed and stored in the hydrogen storage container. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a longitudinal sectional view showing the structure of the hydrogen storage alloy unit according to the first embodiment of the present invention.

FIG. 2A is a sectional view taken along the line II-IIA of FIG.

FIG. 2B is a cross-sectional view taken along the line II-III of FIG.

FIG. 3A is a cross-sectional view perpendicular to the axis showing the structure of the hydrogen storage alloy pipe according to the first embodiment of the present invention. FIG. 3B is a perspective view showing the structure of the hydrogen storage alloy pipe according to the first embodiment of the present invention.

FIG. 4A is a schematic configuration diagram of a heat pump according to a second embodiment of the present invention, showing an ultra-low temperature generation step.

FIG. 4B is a schematic configuration diagram of the heat pump according to the second embodiment of the present invention, showing a regeneration step.

FIG. 5 is a schematic configuration diagram of a heat pump according to a third embodiment of the present invention. FIG. 6A is a schematic configuration diagram of a hydrogen compression device according to a fourth embodiment of the present invention, and is a diagram illustrating a hydrogen storage step.

FIG. 6B is a schematic configuration diagram of the hydrogen compression apparatus according to the fourth embodiment of the present invention, and is a view showing a hydrogen compression step. '

FIG. 7 is a schematic configuration diagram of a hydrogen compression device according to a fifth embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of a hydrogen storage alloy and a hydrogen storage alloy unit according to the present invention, and a heat pump and a hydrogen compression device using the hydrogen storage alloy will be described in detail with reference to the drawings.

First embodiment (hydrogen storage alloy unit)

The overall structure of the hydrogen storage alloy unit 10 according to the first embodiment will be described with reference to FIGS.

The hydrogen storage alloy unit 10 includes a substantially cylindrical main body 11, outwardly protruding end plates 12, 13 closing both ends of the main body 11, and end plates 12, 13. Bowl-shaped portions 22 and 23 which are welded to the outside of 13 and form sealed hydrogen chambers 32 and 33 between the end plate portions 12 and 13 respectively. The end plate portions 12 and 13 and the bowl-shaped portions 22 and 23 as wall surfaces forming the hydrogen chambers 32 and 33 are thick so as to withstand high pressure. Further, the hydrogen storage alloy unit 10 can be formed of a metal material such as titanium, SUS, and aluminum.

The main body 11 of the hydrogen storage alloy unit 10 is provided with nozzles 14 and 15 on the end plate 12 side and the end plate 13 side, respectively. Nozzles 14 and 15 are hydrogen They are respectively connected to heat medium sources (not shown) arranged outside the storage alloy unit 10 and communicate with the heat exchange chamber 16 inside the hollow main body 11. Therefore, it is possible to adjust the ambient temperature of the heat exchange chamber 16 by adjusting or selecting the temperature of the heat medium source connected to the nozzles 14 or 15. As a heat medium source, it is possible to use natural outside air temperature including snow and ice, solar heat, geothermal heat, factory waste heat, waste incineration heat, combustion heat of fuel, etc., fuel cell waste heat, waste heat during equipment operation it can.

The bowls 22 and 23 constituting the hydrogen chambers 32 and 33 have the hydrogen chambers 32 and

A nozzle (hydrogen nozzle) 24 and a nozzle (hydrogen nozzle) 25 for connecting 33 to the outside are provided.

In the heat exchange chamber 16, first and second hydrogen storage alloy pipes (group) '41, 42 having the same structure are arranged in a honeycomb shape (honeycomb shape). The first hydrogen storage alloy pipe 41 has a closed end (leaving end) 41 a in the heat exchange chamber 16 and an open other end (fixed end) 41 b is an end plate. It penetrates airtightly and faces the hydrogen chamber 32. Similarly, the hydrogen-absorbing alloy pipe 42 has a closed end 42 a disposed in the heat exchange chamber 16, and an open other end 42 b air-tightly penetrating the end plate 13 to form the hydrogen chamber 3. You are within 3. In these first and second hydrogen storage alloy pipes 41 and 42, only the ends on the side of the hydrogen chambers 32 and 33 are fixed to the end plates 12 and 13, respectively. Therefore, even if the hydrogen storage alloy pipes 41 and 42 expand due to heat, the left ends 41 a and

Since 4 2a is extensible, it is possible to avoid pipe breakage. In addition, with such a configuration, the pipes can be provided close to each other, so that the amount of the heat medium source supplied into the heat exchange chamber 16 can be reduced, and the hydrogen storage alloy pipes 41 and 4 can be provided. Heat loss at the time of switching the heat medium source when heating or cooling 2 can be minimized. The hydrogen storage alloy pipes 41 and 42 can be formed of, for example, titanium or SUS.

It is preferable that carbon fibers or carbide fibers (for example, SiC) are wound around the hydrogen storage alloy pipes 41 and 42. With such a configuration, it is possible to realize a hydrogen storage alloy unit 10 that is lightweight and has high pressure resistance.

The hydrogen storage alloy pipes 41 and 42 are connected to the heat medium source connected to the nozzles 14 or 15 PC leak 3/06849

7

When the temperature of the heat exchange chamber 16 rises and reaches the hydrogen storage temperature range, hydrogen is released from the hydrogen storage alloy disposed inside. The released hydrogen is transferred from the open fixed end 41b or 42b to the hydrogen chamber 32 or 33, and discharged to the outside of the hydrogen storage alloy unit 10. On the other hand, when the temperature of the heat exchange chamber 16, which was higher than the hydrogen release temperature, was lowered by the heat medium source connected to the nozzles 14 or 15 or left at room temperature, and reached the hydrogen release temperature, Hydrogen is stored in the hydrogen storage alloy disposed inside the hydrogen storage alloy pipe 41 or 42.

In the hydrogen storage alloy pipes 41 and 42, the heat generated or absorbed by the hydrogen storage alloy of one of the hydrogen storage alloy pipes when storing (hydrogenating) or releasing is used for the other hydrogen storage alloy pipe. Can receive and release or occlude (hydrogenate) hydrogen.

Further, since the hydrogen storage alloy pipes 41 and 42 are arranged so as to be in contact with each other, a small amount of heat medium is used. Therefore, it is possible to quickly switch the temperature in the heat exchange chamber 16 when the heat medium is changed.

Further, when the dissociation pressure of the hydrogen storage alloy used for the hydrogen storage alloy pipes 41 and 42 is made different, and the hydrogen storage alloy pipes 41 and 42 are heated or cooled to the same temperature by a common heat medium source, One of the hydrogen storage alloy pipes can release hydrogen, while the other hydrogen storage alloy pipe can store hydrogen. The hydrogen storage alloy pipes (group) 41 and 42 have the above functions. Next, a preferred embodiment of the hydrogen storage alloy pipes 41 and 42 will be described with reference to FIG. Since the hydrogen storage alloy pipes 41 and 42 have the same structure, only the hydrogen storage alloy pipe 41 will be described here. Of course, the structures of the hydrogen storage alloy pipes 41 and 42 may be different.

The hydrogen storage alloy pipe 41 has a uniform cross section having a metal tubular member 41 f, a hydrogen storage alloy paste 41 g, a pound material 41 c, and a metal plate 41 d. The left end 4 1 a of 4 1 f is closed. The metal plate 41d has a length extending in the radial direction of the cylindrical member 41f, and a corrugated bent portion 41d 'is formed at the center thereof. The pound material 41c is a substantially semi-cylindrical porous member (a member through which hydrogen can pass) located on the front and back of the metal plate 41d. A hydrogen flow hole 41e is formed between the part 41d and the pound material 41c. The hydrogen flow hole 41 e opens into the hydrogen chamber 32. As the pound material 41c, a material having high heat resistance and elasticity is preferable, and for example, a foamed silicone rubber agent can be used.

The hydrogen storage alloy base 41 g is solidified after being filled in the gap between the pound material 41 c and the cylindrical member 41 f. By attaching the hydrogen storage alloy material in paste form, it is possible to prevent the fine particles of the hydrogen storage alloy material from being scattered, and to realize fast heat propagation, so that hydrogenation in the hydrogen storage alloy material and water The reaction time required for releasing element can be shortened. In addition, the hydrogen storage alloy contained in the cylindrical member 41 is not biased by vibration.

In addition, without using the pound material 41 c and the metal plate 41 d, a hydrogen storage alloy paste 41 g was formed on the inner wall of the cylindrical member 41 f, and the inside of the hydrogen storage alloy paste 41 g was hydrogen. The hole may be formed as a flow hole, or the hydrogen storage alloy paste may be formed by attaching a powder of the hydrogen storage alloy material to the cylindrical member 41 f having an adhesive applied to the inner wall in advance.

Here, for the hydrogen storage alloy base 41 g, a powdered hydrogen storage alloy material whose particle diameter has been adjusted to about 20 to 50 m in advance and mixed with a polymer adhesive is used. However, it is also possible to use a powder obtained by mixing powder of a eutectic mixture (eutectic) of a hydrogen storage alloy material and a hydrogen storage material with a viscous substance such as an adhesive. By using the eutectic mixture, the weight ratio of hydrogen storage to the weight of the alloy can be increased. Further, since the hydrogen adsorbing material has the property that the amount of hydrogen adsorbed increases with an increase in pressure, it is possible to take in more hydrogen than in the case of using the hydrogen storage alloy material alone, and to apply a high pressure as in the present invention. This effect is remarkable in a hydrogen storage alloy unit that can be realized.

Examples of hydrogen storage alloy materials include Ca, La, Mg, Ni, Ti, LaNi alloy, MgTi alloy, and V alloy by mechanical alloying method. For example, a eutectic mixture in which the element (1) is mixed can be used.

On the other hand, as the hydrogen adsorbing material, for example, a carbon material, nano-carbons having a graphite structure and a graphite structure, carbides and oxides can be used. However, Nanocarbons are used as a hydrogen-absorbing material because the nanocarbons dissolve into the hydrogen-absorbing alloy material during the production of the eutectic mixture, and the hydrogen-absorbing alloy material is carbonized. It is preferable to form a film of a hydrogen-dissociable metal, carbide or oxide in advance. This film is formed by selecting a method according to the type of nano-ribbon from the film-forming methods such as wet plating, CVD, and PVD.

The eutectic mixture of the nanocarbons, carbides and oxides thus coated and the hydrogen storage alloy material is formed by the hydrogen dissociation properties of the hydrogen storage alloy material around the carbons, carbides and oxides. To absorb more hydrogen because gaseous hydrogen molecules (H ² ) come into contact with the hydrogen storage alloy material and separate into protons (H), which settle on the surface and inside gaps of the fine particles of the hydrogen storage material. Can be.

Further, a rubber agent can be used instead of the above-mentioned adhesive. That is, a powder of a hydrogen storage alloy material alone or a eutectic mixture of a hydrogen storage alloy material and a hydrogen adsorption material is mixed as a hydrogen storage alloy paste 41 g as a paste, for example, by mixing with a rubber agent of silicon. Is also good. In this case, the hydrogen storage alloy paste 41 g filled in the tubular member 41 f is hardened by heating the hydrogen storage alloy pipe 41. In the hydrogen storage alloy unit 10 configured as described above, the temperature of the heat exchange chamber 16 is adjusted by setting the temperature of the heat medium source connected to the nozzles 14 or 15 to a predetermined temperature. be able to. When the temperature of the heat medium source is increased and the temperature of the heat exchange chamber 16 reaches the hydrogen release temperature of one or both of the hydrogen storage alloy pipes 41 and 42, hydrogen release starts. The hydrogen released from the hydrogen storage alloy pipe 41 passes through the hydrogen chamber 32 to the nozzle 24 to the outside, and the hydrogen released from the hydrogen storage alloy pipe 42 passes through the hydrogen chamber 33. Through the nozzle 25, it flows out. On the other hand, when the temperature of the heat medium source is lowered and the temperature of the heat exchange chamber 16 reaches the hydrogen storage temperature of one or both of the hydrogen storage alloy pipes 41 and 42, hydrogen storage starts. Hydrogen in the hydrogen storage alloy pipe 41, the hydrogen chamber 32, and the external equipment communicating with the nozzle 24 is gradually stored in the hydrogen storage alloy of the hydrogen storage alloy pipe 41, and is stored in the hydrogen storage alloy pipe 42. The hydrogen in the hydrogen chamber 33 and the external equipment communicating with the nozzle 25 is gradually stored in the hydrogen storage alloy of the hydrogen storage alloy pipe 42. Also connected to nozzles 14 or 15 The inside of the heat exchange chambers 32, 33 and pipes 41, 42 is evacuated from the nozzles 24, 25 while heating the heat medium source at about 80 ° C to remove the hydrogen storage alloy. subjected to gas, then a heating medium source from the nozzle 2 4, 2 5 in place of about 5 ° C cooling, 3 0 kg Z cm for enabling hydrogen pressure at about ^2, the activation of the hydrogen storage alloy dedicated This can be done directly after completion without using a square chamber. .

In addition, when pressure-resistant fibers or carbide fibers (for example, SiC) are wrapped around the hydrogen storage alloy pipes 41 and 42, the pressure resistance is improved, so that the pressure inside the hydrogen storage alloy unit 10 can be increased. However, in the hydrogen storage alloy of the present invention containing a hydrogen adsorption material in which the higher the pressure, the larger the amount of hydrogen adsorption becomes, more hydrogen can be taken in than in the case of the hydrogen storage alloy material alone.

Further, the hydrogen storage alloy unit 10 is a hydrogen storage tank which is a high pressure resistant and lightweight hydrogen storage container without mounting a hydrogen storage alloy or a material for hydrogen adsorption inside the hydrogen storage alloy pipes 41 and 42. Can be used for automobiles. In this case, the high-temperature heat generated by the fluid friction accompanying the filling of the high-pressure hydrogen can be easily cooled by the heat medium source as compared with the conventional cylinder-type hydrogen storage container, and the filling time of the high-pressure hydrogen can be greatly reduced. Second embodiment (heat pump)

The heat pump 50 according to the second embodiment will be described with reference to FIGS. 4A and 4B.

The heat pump 50 has four hydrogen storage alloy devices with different hydrogen dissociation pressures (first hydrogen storage alloy device) 60, the hydrogen storage alloy device (third hydrogen storage alloy device) 61, and the hydrogen storage alloy device (second It has a hydrogen storage alloy device 62 and a hydrogen storage alloy device (fourth hydrogen storage alloy device) 63. Heat medium sources 70, 71, 72, and 73 are connected to the hydrogen storage alloy devices 60 and 63, respectively, so that they can be separated from each other. 7 1 is connected. Further, a pump 74 that can transfer hydrogen generated in the hydrogen storage alloy device 63 to the hydrogen storage alloy device 62 is disposed between the hydrogen storage alloy devices 62 and 63. 2 and 6 3 are communicated. The heat medium source 71 can be selectively connected to one of the hydrogen storage alloy devices 61 and 62 and the hydrogen storage alloy device 63. Heat medium sources 70, 71, and 72 include natural outside air temperature including snow and ice, solar heat, geothermal heat, factory waste heat, waste incineration heat, and fuel. Combustion heat of fuel, exhaust heat of fuel cells, exhaust heat during operation of equipment, etc. can be used. Although simply represented in FIGS. 4A and 4B, the hydrogen storage alloy devices 61 and 62 constitute the hydrogen storage alloy unit 10 shown in FIG. That is, the hydrogen storage alloy devices 61 and 62 constitute one of the hydrogen storage alloy pipes 41 and 42 in the hydrogen storage alloy unit 10, respectively, and the hydrogen storage alloy devices are respectively provided by the nozzles 24 and 25. The heating medium source 71 is connected to the nozzles 14 and 15. Further, the number of hydrogen storage alloy devices can be set arbitrarily, and the number of hydrogen storage alloy devices constituting the hydrogen storage alloy unit 10 shown in FIG. 1 may be two or more. Further, it is preferable that carbon fibers or carbide fibers (for example, SiC) are wound around the outer circumference of the hydrogen storage alloy pipes 41 and 42. With this configuration, it is possible to realize a hydrogen storage alloy device for a heat pump having high pressure resistance.

The hydrogen dissociation pressure of the hydrogen storage alloys of the hydrogen storage alloy devices 60, 61, 62 and 63 is the smallest for the hydrogen storage alloy of the hydrogen storage alloy device 60, the hydrogen storage alloy device 62, and the hydrogen storage alloy. The hydrogen storage alloy of the hydrogen storage alloy device 63 is arranged so as to become the largest. Therefore, the hydrogen release start temperature of the hydrogen storage alloy of the hydrogen storage alloy device 60 is the highest, the temperature of the hydrogen storage alloy device 62 is lower in the order of the hydrogen storage alloy device 61, and the hydrogen storage alloy device 63 of the hydrogen storage alloy device 63 is lower. The lowest for occlusion alloys. Examples of the hydrogen storage alloy materials used in the hydrogen storage alloy devices 60, 61, 62 and 63 include, for example, La, Ni, Ti, and La Ni Alloys, and MgTi-based alloys. In this case, if a powdery hydrogen-absorbing alloy material whose particle size has been adjusted to about 20 to 50 m in advance mixed with a polymer-based adhesive is used, the hysteresis characteristic value will be minimized, so the heat pump It is desirable only in such cases.

Due to the hydrogen dissociation property, when a gaseous hydrogen molecule (H 2) comes into contact with the hydrogen storage alloy material, the hydrogen storage alloy material is separated into protons (H) and stored between the alloy crystals.

Further, a rubber agent can be used instead of the above-mentioned adhesive. That is, as the hydrogen storage alloy paste 41 g, the powder of the hydrogen storage alloy A paste may be formed by mixing with a rubber agent. In this case, the hydrogen storage alloy paste 41 g filled in the cylindrical member 4 If is hardened by heating the hydrogen storage alloy pipe 41.

The hydrogen storage alloy devices 60 and 63 can have any configuration. For example, the hydrogen storage alloy devices 60 and 63 have a structure in which a hydrogen storage alloy is arranged in a pipe, such as a hydrogen storage alloy pipe 41 in FIG. be able to.

In the heat pump 50 configured as described above, hydrogen is transferred from the hydrogen storage alloy device 63 to the hydrogen storage alloy device 62 and from the hydrogen storage alloy device 61 to the hydrogen storage alloy device 60. Then, the ultra-low temperature generation step (Fig. 4A), which takes heat from the heat medium source 73 to make it ultra-low temperature, and from the hydrogen storage alloy device 60 to the hydrogen storage alloy device 61, and the hydrogen storage alloy device 62 One cycle consisting of a regeneration step (Fig. 4B) for transferring hydrogen from the hydrogen storage alloy device 63 to the hydrogen storage alloy device 63 can be realized. In addition, when carbon fibers or carbide fibers (for example, SiC) are wound around the hydrogen storage alloy pipes 41 and 42, the pressure resistance is improved, so that the hydrogen storage alloy devices 60, 61, 62, 63 are required. The hydrogen storage alloy of the present invention containing a hydrogen-absorbing material, in which the higher the pressure, the higher the amount of hydrogen absorbed, can take in more hydrogen than in the case of the hydrogen-absorbing alloy material alone. .

In the production process shown in FIG. 4A, when the high-temperature hydrogen storage alloy device 60 is cooled to room temperature by the heat medium source 70, the hydrogen storage alloy and the hydrogen storage alloy device 6 of the hydrogen storage alloy device 60 are used. The hydrogen generated from the hydrogen storage alloy of the hydrogen storage alloy device 61 is transferred to the hydrogen storage alloy device 60 due to the difference in the hydrogen dissociation pressure with the hydrogen storage alloy 1. At this time, the hydrogen storage alloy of the hydrogen storage alloy device 61 takes away heat from the heat medium source 71 and the hydrogen storage alloy of the hydrogen storage alloy device 62 is cooled, so that the hydrogen storage alloy devices 62 and 63 The hydrogen released from the hydrogen storage alloy of the hydrogen storage alloy device 63 due to the difference in hydrogen dissociation pressure of the hydrogen storage alloy with the hydrogen storage alloy is transferred to the hydrogen storage alloy device 62 and the hydrogen storage of the hydrogen storage alloy device 63 The alloy removes heat from the heating medium source 73. By making the difference between the dissociation pressures of the hydrogen storage alloys of the hydrogen storage alloy devices 62 and 63 large, the temperature of the heat medium source 73 can be made lower. Further, by operating the pump 74, hydrogen is forcibly transferred from the hydrogen storage alloy device 63 to the hydrogen storage alloy device 62. Therefore, the ultra-low temperature of the heat medium source 73 can be efficiently realized.

In the regeneration step shown in FIG. 4B, the heat storage medium source 70 is heated to a high temperature to heat the hydrogen storage alloy device 60, thereby generating hydrogen from the hydrogen storage alloy of the hydrogen storage alloy device 60 to generate the hydrogen storage alloy. The hydrogen pressure in the device 60 is increased to transfer hydrogen to the hydrogen storage alloy device 61. The hydrogen storage alloy of the hydrogen storage alloy device 61 that has absorbed the hydrogen transferred from the hydrogen storage alloy device 60 generates heat and gives heat to the hydrogen storage alloy device 62. The hydrogen storage alloy of the hydrogen storage alloy device 62 whose temperature has been increased by the heat given from the hydrogen storage alloy device 61 releases hydrogen. The hydrogen released from the hydrogen storage alloy of the hydrogen storage alloy device 62 is transferred to the hydrogen storage alloy device 63 communicating with the hydrogen storage alloy device 62, and the hydrogen storage alloy of the hydrogen storage alloy device 63 that stores the hydrogen is used. Discharges heat. At this time, the pump 74 is not operating, and the hydrogen storage alloy device 62 and the hydrogen storage alloy device 63 are in communication.

In the regeneration process, the connection between the hydrogen storage alloy device 63 and the heat medium source 73 and the connection between the hydrogen storage alloy devices 61 and 62 and the heat medium source 71 are respectively released, and the hydrogen storage alloy device 63 Is connected to a heat medium source 71. By adopting such a configuration, the heat medium source 71 receives the exhaust heat from the hydrogen storage alloy device 63 and its temperature rises to generate the heat medium source 71 at a high temperature. Can be used as a heat supply source to the hydrogen storage alloy device 61 in the above. Further, as described above, if the amount of the hydrogen storage alloy in the hydrogen storage alloy device 61 is larger than the amount of the hydrogen storage alloy in the hydrogen storage alloy device 62 in the generation step, the temperature of the heat medium source 71 becomes lower. When the heat medium source 71 is used in the regeneration step, heat can be more efficiently transferred from the hydrogen storage alloy device 63 to the heat medium source 71.

As described above, by using the heat pump 50, a compact and efficient heat pump can be realized. In addition, ultra-low temperature, which is difficult to achieve with a heat medium source alone, can be easily achieved by using hydrogen transfer by a pump.

Third embodiment (heat pump)

A heat pump 80 according to the third embodiment will be described with reference to FIG. The heat pump 80 has two systems for transferring hydrogen through a single pump unit 90 to achieve extremely low temperatures. The two hydrogen transfer paths are connected via a pump unit 90 to a first system connecting the hydrogen storage alloy device 100 and the hydrogen storage alloy device 101 connected via a pump unit 90. This is a second system connecting the hydrogen storage alloy device 102 and the hydrogen storage alloy device 103. Although simply represented in FIG. 5, the hydrogen storage alloy devices 100, 101, 102, and 103 each constitute a unit of the hydrogen storage alloy unit 10 shown in FIG. . That is, the hydrogen storage alloy devices 100, 101, 102, and 103 are respectively composed of the hydrogen storage alloy pipes 41, 42 of the hydrogen storage alloy unit 10, and the hydrogen storage alloy The hydrogen storage alloys of the devices 101 and 102 are also composed of the hydrogen storage alloy pipes 41 and 42 of the hydrogen storage alloy unit 10 respectively. The hydrogen storage alloy devices 100, 101, 102, and 103 may each have a configuration other than the hydrogen storage alloy unit 10, but if they are configured by the hydrogen storage alloy unit 10, the heat medium source Less heat loss during replacement.

Hydrogen storage alloy devices 100, 101, 102 and 103 consist of a hydrogen storage alloy device (first hydrogen storage alloy device) 100 and a hydrogen storage alloy device (fourth hydrogen storage device). Alloy device) 103 has the same kind of hydrogen storage alloy, and hydrogen storage alloy device (second hydrogen storage alloy device) 101 and hydrogen storage alloy device (third hydrogen storage alloy device) 102 Have the same type of hydrogen storage alloy. The hydrogen dissociation pressure of these hydrogen storage alloys is higher in the hydrogen storage alloy devices 100 and 103 than in the hydrogen storage alloy devices 101 and 102, respectively. Equipped with a hydrogen storage alloy with characteristics that match the target heat collection temperature.

The pump unit 90 has a pump 91, switching valves 92, 93, 94, 95, and one-way valves 96, 97. The switching valves 92 and 93 are connected to the hydrogen storage alloy device 100. Downstream of the pump 91, there is provided a one-way valve 96 that allows the flow from the pump 91 to the hydrogen storage alloy device 101 and blocks the flow from the hydrogen storage alloy device 101. On the other hand, the switching valves 94 and 95 are connected to the hydrogen storage alloy device 103. A one-way valve 97 is provided downstream of the pump 91 to allow the flow from the pump 91 to the hydrogen storage alloy device 102 and block the flow from the hydrogen storage alloy device 102. ing.

In the generation process of the first system of the heat pump 80 configured as described above, the switching valve 92 is closed, the switching valve 93 and the one-way valve 96 are opened, and high-temperature hydrogen storage is performed. The alloy apparatus 101 is cooled at room temperature. Then, due to the difference in the dissociation pressure of the hydrogen storage alloy between the hydrogen storage alloy devices 101 and 100, hydrogen is released from the hydrogen storage alloy of the hydrogen storage alloy device 100, and the hydrogen storage alloy device 101 is moved to the hydrogen storage alloy device 101. Be transported. At this time, when the pump 91 is operated, the transfer of hydrogen from the hydrogen storage alloy device 100 to the hydrogen storage alloy device 101 is efficiently performed. Further, by forcibly transferring hydrogen by using the pump 91, the hydrogen storage alloy of the hydrogen storage alloy device 100 is supplied with more heat from the heat medium source 105 connected to the hydrogen storage alloy device 100. Since heat can be removed, this heat medium source can be brought to extremely low temperatures.

At this time, in the second system, the switching valve 95 is opened, and the switching valve 94 and the one-way valve 97 are closed. In the state opposite to the first system, hydrogen is released from the hydrogen storage alloy device 102. Then, it is transferred to the hydrogen storage alloy device 103 and the regeneration process is performed.

At this time, natural outside air temperature including snow and ice is used as the heat medium source 106 and 108 for cooling, and the heat medium source 107 for heating is solar heat, geothermal, factory exhaust heat, and garbage. It is possible to use the heat of incineration, the heat of combustion of fuel, the exhaust heat of the fuel cell, and the exhaust heat during machine operation.

In the heat pump 80, hydrogen is transferred from the hydrogen storage alloy device 100 to the hydrogen storage alloy device 101 in the first system, and from the hydrogen storage alloy device 102 to the hydrogen storage alloy device 103 in the second system. Be transported. By switching the transfer valves 92 to 95 and the one-way valves 96 and 97, the hydrogen transferred in this way can be returned to the original hydrogen storage alloy device in the reverse process.

That is, as the reverse process, in the first system, with the switching valve 93 and the one-way valve 96 closed and the switching valve 92 opened, the heat medium source connected to the hydrogen storage alloy device 101 is opened. By raising the temperature of 106, hydrogen is released from the hydrogen storage alloy of the hydrogen storage alloy device 101, and the hydrogen storage alloy has a larger hydrogen dissociation pressure than the hydrogen storage alloy of the hydrogen storage alloy device 101. The regeneration process is performed by transferring hydrogen to the apparatus 100. On the other hand, in the second system, the switching valve 94 and the one-way valve 97 are opened, and the switching valve 9 „~

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In a state where 5 is closed, the pump 91 is operated to transfer hydrogen from the hydrogen storage alloy device 103 to the hydrogen storage alloy device 102 to perform the generation process.

At this time, the heat medium sources 105 and 107 for cooling use the natural outside air temperature including snow and ice, and the heat medium sources 106 for heating include solar heat, geothermal heat, factory exhaust heat, and garbage. It is possible to use the heat of incineration, the heat of combustion of fuel, the exhaust heat of the fuel cell, and the exhaust heat during machine operation.

With the configuration described above, the step of generating a cryogenic heat medium source and regenerating the heat pump 80 can be repeated without interruption of the heat medium source. Furthermore, since the pump 91 can be continuously driven by either the first system or the second system, it is possible to prevent problems caused by intermittent driving of the pump.

Fourth embodiment (hydrogen compression device)

A hydrogen compressor 110 according to the fourth embodiment will be described with reference to FIGS. 6A and 6B.

The hydrogen compression device 110 stores compressed hydrogen in a hydrogen storage container 125, and is a low-pressure hydrogen storage container 120 for hydrogen purification, reforming, etc., for high-pressure storage. It has a hydrogen storage container 125, a hydrogen storage alloy device 121, a heat medium source 122 for cooling, a heat medium source 124 for heating, and a pump 123.

The hydrogen storage alloy device 122 can have any configuration, but the hydrogen storage alloy unit 10 shown in FIG. 1 can also be used. In this case, it is preferable to attach the hydrogen storage alloy having the same hydrogen dissociation pressure to the hydrogen storage alloy pipes 41 and 42. The hydrogen storage alloy is attached by filling the hydrogen storage alloy in paste form into the hydrogen storage alloy pipes 41 and 42 and then solidifying the same.

The hydrogen compression device 110 configured as described above has a hydrogen storage process (FIG. 6A) in which hydrogen is stored in the hydrogen storage alloy device 121, and a hydrogen storage process in which hydrogen is compressed and stored in the hydrogen storage container 125. A cycle consisting of the compression process (Fig. 6B) is feasible.

In the hydrogen storage step, the hydrogen storage alloy device 121 is cooled at room temperature by the heat medium source 122. Then, the hydrogen storage alloy in the hydrogen storage alloy device 121 stores hydrogen existing in the hydrogen storage container 120.

On the other hand, in the hydrogen compression process, the heat medium source 124 is maintained at a high temperature. PC leakage 49

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The temperature of the hydrogen storage alloy device 1 2 1 connected thereto rises. When the temperature of the hydrogen storage alloy device 121 reaches the hydrogen release start temperature of the hydrogen storage alloy of the hydrogen storage alloy device 121, hydrogen is released. The valve provided between the hydrogen storage container 125 and the pump 123 is open, and the released hydrogen is stored in the hydrogen storage container 125. In this process, the pump 123 with the hydrogen storage alloy device 121 as the inlet and the hydrogen storage container 125 side as the outlet is operating, and the hydrogen storage alloy device 121 is forced to store hydrogen. Since the hydrogen released by the alloy is stored in the hydrogen storage container 125, the hydrogen can be stored in the hydrogen storage container 125 while being compressed to a high pressure.

For example, the heat medium source 124 is heated by heat exchange with waste heat of about 60 to 90 ° C, and the hydrogen release pressure of the hydrogen storage alloy of the hydrogen storage alloy device 121 is 10 to 20 kg. / cm ² and pressurize the suction side of the pump 123 (the hydrogen storage alloy device 121 side), the outlet side pressure of the pump 123 easily becomes high.

Fifth embodiment (hydrogen compression device)

A hydrogen compressor 130 according to a fifth embodiment will be described with reference to FIG. The hydrogen compression device 140 is a device that stores compressed hydrogen in the hydrogen storage container 140, and includes a hydrogen storage container 140, a hydrogen storage alloy device 141, and a pressure container 144, 144. And a pump 144.

The hydrogen storage alloy device 14 1 is a check valve 15 0 that allows only the flow from the hydrogen storage alloy device 14 1 to the outside, and branches from the check valve 15 0 and the pressure vessel from the check valve 1 50. Check valve 1 5 2 that allows only flow to 1 4 2 and check valve that branches from check valve 1 50 and allows only flow from check valve 1 50 to pressure vessel 14 3 It is connected to the pressure vessels 14 2 and 14 3 via 15 3.

The pressure vessels 14 2 and 14 4 are supplied with hydrogen via check valves 15 4 and 15 5, respectively, which allow only the flow from pressure vessels 14 2 and 14 3 to the hydrogen storage vessel 140. It is connected to storage container 140. A switching valve 156 is arranged between the check valves 154 and 155 and the hydrogen storage container 140. Further, a pump 144 capable of bi-directional conveyance is arranged between the pressure vessels 144 and 144. With such an arrangement, the hydrogen released from the hydrogen storage alloy of the hydrogen storage alloy device 141 can be selectively conveyed to one of the pressure vessels 144 and 144. „～ ™

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The hydrogen storage alloy device 14 1 can have any configuration, but the hydrogen storage alloy unit 10 in FIG. 1 can be used. In this case, the hydrogen storage alloy pipes 41 and 42 are filled with a hydrogen storage alloy having the same hydrogen dissociation pressure. The heat medium source 144 is connected to the nozzles 14 and 15, and the open ends of the hydrogen storage alloy pipes filled with the hydrogen storage alloy of the hydrogen storage alloy pipes 41 and 42 pass through the hydrogen chamber and the nozzle. Connected to the check valve 150. As the heat medium source, it is possible to use natural outside air temperature including snow and ice, solar heat, geothermal heat, factory exhaust heat, waste incineration heat, combustion heat of fuel, fuel cell exhaust heat, exhaust heat during equipment operation, etc. it can.

Each of the pressure vessels 142 and 144 constitutes a liquid level piston composed of a closed vessel containing a working fluid 160. As the working fluid, for example, water can be used. When using water, it is desirable to use pure water or distilled water. Since the pressure vessels 14 2 and 14 3 are connected via the pump 14 4, if the check valve 15 2 is opened and the check valve 15 3 is closed, the hydrogen storage alloy device 1 4 1 The hydrogen released from the hydrogen storage alloy flows into the pressure vessel 14 2 and pushes down the working fluid 16 0 therein, and the working fluid 16 0 flows into the pressure vessel 14 3, The hydrogen present above the working fluid 160 in 144 is stored in the hydrogen storage container 140. Conversely, if the check valve 15 3 is opened and the check valve 15 2 is closed, hydrogen released from the hydrogen storage alloy of the hydrogen storage alloy device 14 1 flows into the pressure vessel 14 4 The working fluid 160 is pushed down, the working fluid 160 flows into the pressure vessel 142, and the hydrogen existing above the working fluid 160 in the pressure vessel 142 is converted into a hydrogen storage vessel. Stored at 140.

Next, a description will be given of a hydrogen compression storage process according to the present embodiment.

In the first step, the hydrogen released from the hydrogen storage alloy of the hydrogen storage alloy device 141 flows into the pressure vessel 144 (the pressure vessel on the hydrogen introduction side, the first pressure vessel). The hydrogen in 3 (compression side pressure vessel, 2nd pressure vessel) is stored in hydrogen storage vessel 140. Specifically, with the check valves 15 0, 15 3, 15 4 and the switching valve 15 6 open, the check valves 15 5 and 15 When the hydrogen storage alloy device 1 4 1 is heated by the source 1 4 5, the hydrogen released from the hydrogen storage alloy is converted into a symbol (1) → (2) → (3) → (4) Is stored in the hydrogen storage container 140 via the route of FIG. At this time, pump 1 4 4 is driven to pump working fluid PC leak 49

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As a result, the liquid level piston of the pressure vessel 142 rises to compress the internal hydrogen, and hydrogen can be stored in the hydrogen storage vessel 140 in a high-pressure compressed state. As the heat medium source, use the natural outside air temperature including snow and ice for the heat medium source for cooling, and use the solar heat, geothermal, factory exhaust heat, and waste incineration for the heat medium source for heating. Heat, combustion heat of fuel, etc., fuel cell exhaust heat, exhaust heat during equipment operation, etc. can be used.

In the second step, the hydrogen released from the hydrogen storage alloy of the hydrogen storage alloy device 141 flows into the pressure vessel 144 (pressure vessel on the hydrogen introduction side), and the pressure vessel 144 (pressure on the compression side) The hydrogen in the container is stored in the hydrogen storage container 140. Specifically, with the check valves 15 0, 15 2 and 15 5 and the switching valve 15 6 open, and with the check valves 15 3 and 15 4 closed, the connected heat medium When the hydrogen storage alloy device 1 4 1 is heated by the source 1 4 5, the hydrogen released from the hydrogen storage alloy is converted into a symbol (1) → (5 → (6) → (7) → It is stored in the hydrogen storage container 140 via the route of (8) → (9) At this time, the working fluid is pumped from the pressure container 144 to the pressure container 144 by driving the pump 144. By doing so, the liquid level piston of the pressure vessel 144 rises to compress the hydrogen inside, and the hydrogen can be stored in the hydrogen storage vessel 140 in a highly compressed state. By alternately performing the two steps, it is possible to store high-pressure compressed hydrogen in the hydrogen storage container 140. For example, hydrogen storage and storage can be performed by heat exchange with waste heat of about 6 to 90 ° C. Device 1 4 1 is heated, by pressurizing the hydrogen release pressure of a hydrogen storage alloy apparatus 1 4 1 of the hydrogen storage alloy is increased to 1 0-2 about 0 kg Z cm ^2, the pressure vessel 1 4 2 and the pressure vessel Of the 144, the volume inside the hydrogen inlet side pressure vessel can be once reduced (primary compression) and introduced, so the pump 144 can easily be reduced from a normal pressure volume to an ultra-high pressure volume. Hydrogen is compressed and transferred (secondary compression) into the hydrogen storage container 140, and the time required is shorter than that of conventional equipment.

Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and can be improved or changed within the purpose of improvement or the scope of the present invention. Industrial applicability

According to the present invention, the hydrogen storage alloy unit comprises: a heat exchange chamber through which a heat medium source flows; „

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A pair of hydrogen chambers formed on both sides of the heat exchange chamber, and one end respectively facing the pair of hydrogen chambers, and the other end extending into the heat exchange chamber in a free state; A pair of hydrogen-absorbing alloy pipes each having a fixed end, and each of the hydrogen-absorbing alloy pipes constituting the pair of hydrogen-absorbing alloy pipes has a hydrogen-absorbing alloy therein. Since the free end on the heat exchange chamber side is closed and the hydrogen circulation hole is open on the end on the hydrogen chamber side, the apparatus can be made compact, and the switching between heating and cooling of the hydrogen storage alloy can be performed. The loss of heat is small, heat can be transferred instantaneously between the hydrogen storage alloy and the heat medium source, and the effect of reducing the possibility of damage to the container due to expansion of the hydrogen storage alloy during hydrogenation is obtained.

Claims

The scope of the claims

1. A hydrogen storage alloy,

The powder of the eutectic mixture of the hydrogen storage alloy material and the hydrogen storage material is mixed with a viscous substance to form a paste.

2. A hydrogen storage alloy unit,

A heat exchange chamber through which a heat medium source flows,

A pair of hydrogen chambers formed on both sides of the heat exchange chamber,

A pair of hydrogen storage alloy pipes, one end of which faces the pair of hydrogen chambers, the other end extends into the heat exchange chamber in a free state, and the pair of hydrogen storage alloy pipes each having one end fixed to the pair of hydrogen chambers. Prepared,

Each of the hydrogen storage alloy pipes forming the pair of hydrogen storage alloy pipes has a hydrogen storage alloy therein, and a free end on the heat exchange chamber side is closed. A hydrogen flow hole is open at the end.

3. The hydrogen storage alloy unit according to claim 2, wherein

The pair of hydrogen storage alloy pipes is arranged in a honeycomb shape. '

4. The hydrogen storage alloy unit according to claim 2, wherein

The hydrogen storage alloys in the pair of hydrogen storage alloy pipes have different dissociation pressures.

5. The hydrogen storage alloy unit according to claim 2, wherein

The pair of hydrogen storage alloy pipes are respectively a pound material made of a porous material having the hydrogen circulation hole at the center,

A hydrogen storage alloy paste that is solidified after being mounted in a paste state between the pound material and the outer shell pipe.

6. The hydrogen storage alloy unit according to claim 2, wherein

A carbon fiber or a carbide fiber is wound around the outer periphery of the hydrogen storage alloy pipe.

7. A heat pump,

A first hydrogen storage alloy device including a first hydrogen storage alloy having a predetermined dissociation pressure, a second hydrogen storage alloy device including a second hydrogen storage alloy having a higher dissociation pressure than the first hydrogen storage alloy,

A third hydrogen storage alloy device comprising a third hydrogen storage alloy having a higher dissociation pressure than the second hydrogen storage alloy,

A fourth hydrogen storage alloy device including a fourth hydrogen storage alloy having a higher dissociation pressure than the third hydrogen storage alloy,

The second hydrogen storage alloy device and the third hydrogen storage alloy device form one unit,

The unit is

A first hydrogen storage alloy pipe group having the second hydrogen storage alloy,

A first hydrogen chamber to which one end of the first hydrogen storage alloy pipe is fixed,

A second hydrogen storage alloy pipe group having the third hydrogen storage alloy,

A second hydrogen chamber to which one end of the second hydrogen storage alloy pipe is fixed, and the other end of the second hydrogen storage alloy pipe and the other end of the third hydrogen storage alloy pipe are arranged in a common heat exchange chamber. And

The first hydrogen storage alloy device communicates with one of the second hydrogen storage alloy device and the third hydrogen storage alloy device,

The fourth hydrogen storage alloy device communicates with the other of the second hydrogen storage alloy device and the third hydrogen storage alloy device,

The first hydrogen storage alloy device and the fourth hydrogen storage alloy device may include the first to fourth hydrogen storage alloy devices.

By heating or cooling any one of the hydrogen storage alloy devices of No. 4, hydrogen is transferred to the respective units.

8. The heat pump according to claim 7, wherein

The second hydrogen storage alloy device and the fourth hydrogen storage alloy device are connected via a pump capable of transferring hydrogen from the fourth hydrogen storage alloy device to the second hydrogen storage alloy device.

9. The heat pump according to claim 7, wherein

10. Heat pump,

A first hydrogen storage alloy device including a first hydrogen storage alloy having a predetermined dissociation pressure, a second hydrogen storage alloy device including a second hydrogen storage alloy having a lower dissociation pressure than the first hydrogen storage alloy,

A third hydrogen storage alloy device comprising a third hydrogen storage alloy having a lower dissociation pressure than the first hydrogen storage alloy,

A fourth hydrogen storage alloy device comprising a fourth hydrogen storage alloy having the same dissociation pressure as the first hydrogen storage alloy;

The first hydrogen storage alloy device and the second hydrogen storage alloy device form a first system connected by a pump unit,

The third hydrogen storage alloy device and the fourth hydrogen storage alloy device form a second system connected by the pump unit,

In the first and second systems, one of the hydrogen storage alloy devices is heated or cooled, and the pump unit is operated, so that the first hydrogen storage alloy device and the second hydrogen storage alloy device are connected to each other. And transferring hydrogen in opposite directions between the third hydrogen storage alloy device and the fourth hydrogen storage alloy device.

1 1. A hydrogen compressor,

A hydrogen storage alloy made by mixing a powder of a eutectic mixture of a hydrogen storage alloy material and a hydrogen storage material with a viscous substance; A hydrogen storage alloy device capable of exchanging heat with a heat medium source,

A hydrogen storage container communicating with the hydrogen storage alloy device via a pump, wherein the heat storage medium is used to heat the hydrogen storage alloy device, and the pump is configured to supply hydrogen from the hydrogen storage alloy device to the hydrogen storage container. By operating to transfer, the hydrogen storage container is compressed to contain hydrogen.

1 2. A hydrogen compressor,

A hydrogen storage alloy device having a hydrogen storage alloy,

A first pressure vessel and a second pressure vessel, each of which is switchably connected to the hydrogen storage alloy device,

A pump connected to both the first pressure vessel and the second pressure vessel and capable of transferring a fluid;

A hydrogen storage container communicating with each of the first pressure container and the second pressure container,

Transferring the hydrogen released from the hydrogen storage alloy by heating the hydrogen storage alloy device to one of the first pressure vessel and the second pressure vessel, and the first pressure vessel and the second pressure The pump is operated to transfer the fluid from one side of the container to which hydrogen has been transferred to the other side, so that the hydrogen is compressed and stored in the hydrogen storage container.