KR20090084524A - Heating and cooling device for hydrogen storage alloys - Google Patents

Abstract

A heating and cooling device made of hydrogen storage alloys is provided to improve thermal efficiency by heat-exchanging external air and high temperature/low temperature heat exchangers as hydrogen gas heat-exchanged with hydrogen storage alloyed powder supplies reaction heat to the high temperature/low temperature heat exchangers. A heating and cooling device made of hydrogen storage alloys comprises first and second hydrogen storage containers(10,20), a pump unit(30), high temperature/low temperature heat exchangers(40,60), a relief valve(50), a redirect valve(70), and an accumulation unit(80). The hydrogen storage container stores metallic alloy for hydrogen storage. The metallic alloy for hydrogen storage generates heat in sucking hydrogen gas and absorbs heat in discharging the hydrogen gas. The high-temperature heat exchanger is heat-exchanged with the outside due to the inflow of the hydrogen gas generating the heat. The low-temperature heat exchanger is heat-exchanged with the outside due to with the inflow of the hydrogen gas absorbing the heat. The redirect valve selectively diversifies the movement route of the hydrogen gas.

Description

TECHNICAL FIELD [0001] The present invention relates to a heating and cooling device for hydrogen storage alloys,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling and heating apparatus using a hydrogen storage alloy, and more particularly, to a cooling and heating apparatus using a hydrogen storage alloy, And a second cycle in which the first cycle and the second cycle are sequentially performed in the order of the cycle and pump means, the first hydrogen storage vessel, the high temperature heat exchanger, the second hydrogen storage vessel, and the low temperature heat exchanger, The high-temperature heat exchanger continuously receives high-temperature hydrogen gas, and the low-temperature heat exchanger receives the low-temperature hydrogen gas, whereby the exothermic reaction and the endothermic reaction occur in the high-temperature heat exchanger and the low- The present invention relates to a cooling / heating apparatus using a hydrogen storage alloy which can be continuously formed to remarkably improve thermal efficiency.

Recently, various energy sources such as hydroelectric power, wind power, hydrogen energy, and solar energy have been researched and developed as alternative energy sources for solving exhaustion of fossil fuels and environmental pollution. Among them, hydrogen energy can be mass-produced from water (H ₂ O), which is 71% of the surface of the earth, and is reduced to water after use.

However, hydrogen at a vaporization point of -252.6 ° C, which is a gas at room temperature and atmospheric pressure, is a very explosive material, which results in poor storage efficiency and handleability. Hydrogen storage methods using hydrogen storage alloys, hydrogen storage methods using carbon nanotubes such as carbon nanotubes, and hydrogen storage methods using non-carbon nanomaterials using organic and inorganic materials .

Particularly, among the hydrogen storing methods, the hydrogen storing method using the hydrogen storing alloy can obtain a high hydrogen density and not only requires a large amount of hydrogen per volume at room temperature, but also requires a high-pressure vessel and a heat insulating vessel, Feature.

In addition, since the reversible reaction of hydrogen and hydrogen storage alloy has a function of converting energy, research and development of various application technologies such as cooling and heating devices and sensors applying energy conversion functions from these various reaction characteristics are being actively carried out I am putting a lot of expectation.

5 is a view schematically showing a configuration of a cooling / heating apparatus using a conventional hydrogen storage alloy.

As shown in FIG. 5, the conventional cooling / heating apparatus using a hydrogen storage alloy includes first and second reactors 100 and 200 provided with hydrogen storage alloys 110 and 210, (400) for selectively controlling the moving direction of the hydrogen gas, and a heat exchanger for exchanging the heat-exchanged air through the respective reactors, And air flow guide means 500 for determining the flow direction.

When the pumping means 300 is operated, the cooling and heating apparatus using the hydrogen storage alloy according to the related art is constructed such that when the pumping means 300 moves the hydrogen stored in the hydrogen storage alloy 210 of the second reactor 200 to the hydrogen moving pipe 900- 2 to the first reactor 100 to be stored in the hydrogen storage alloy 110 of the first reactor 100. Since the exothermic reaction progresses in the first reactor 100 and the endothermic reaction proceeds in the second reactor 200, the air flow guiding means 500 is rotated to cool the room, and the second reactor 200 And the indoor air discharge duct 700 are communicated with each other and the first reactor 100 and the outdoor air discharge duct 800 are communicated with each other. Accordingly, the outside air on the side of the second reactor 200 is lowered in temperature by the second reactor 200, and the lowered outside air is introduced into the room through the indoor air discharge duct 700 by the second blower 810 And is discharged. At the same time, the outside air on the first reactor 100 side is heated by the second reactor 200, and the hot air is discharged to the outside through the outdoor air discharge duct 800 by the first blower 710 do.

Thereafter, when hydrogen is saturated in the hydrogen storage alloy 110 of the first reactor 100, the control unit controls the pumping means 300 to rotate in the opposite direction, and hydrogen is discharged from the first reactor 100 And moves to the side of the second reactor 200 along the hydrogen moving pipe 901, the four-way valve 400 and the hydrogen moving pipe 902.

Meanwhile, when the conventional cooling / heating apparatus using hydrogen storage alloy is applied for indoor heating, indoor air is sucked into the side of reactors 100 and 200 that exothermally react and is discharged through indoor air discharge duct 700 And thus the description thereof will be omitted.

However, when the exothermic reaction and the endothermic reaction occur in the reactor, the conventional cold storage and heating apparatus using the hydrogen storage alloy transfers heat between the adjacent particles of the hydrogen storage alloy contained in the reactor, As the heat exchange is performed with the air, the heat transfer path becomes longer and the thermal efficiency is lowered.

As described above, in the cooling and heating apparatus using the conventional hydrogen storage alloy, the endothermic reaction and the exothermic reaction are alternately performed in the first reactor 100 and the second reactor 200, Accordingly, since the heating and cooling are repeated during the transition from the endothermic reaction to the exothermic reaction or from the exothermic reaction to the endothermic reaction, there is a problem that the thermal efficiency is remarkably lowered compared with the operation of endothermic reaction and exothermic reaction.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hydrogen storage device, a hydrogen storage device, The first cycle and the second cycle in which the hydrogen gas is moved in the order of the pump means, the first hydrogen storage vessel, the high temperature heat exchanger, the second hydrogen storage vessel, and the low temperature heat exchanger alternately, Temperature hydrogen gas is continuously supplied to the high-temperature heat exchanger, and the low-temperature hydrogen gas is introduced into the low-temperature heat exchanger, so that the exothermic reaction in the high-temperature heat exchanger and the low- And an endothermic reaction is continuously performed to improve the thermal efficiency.

Another object of the present invention is to provide a method for producing a hydrogen storage alloy, which comprises the steps of: preparing a hydrogen storage alloy by heat-exchanging a hydrogen storage alloy powder with a hydrogen storage alloy; heating and cooling hydrogen gas by supplying heat to the heat exchanger and a low temperature heat exchanger; The present invention provides a cooling / heating apparatus using a hydrogen storage alloy which can remarkably improve the performance of the hydrogen storage alloy.

The hydrogen gas may be a mixture gas of hydrogen and an inert gas. A relief valve may be provided on the hydrogen passage of the first hydrogen storage vessel and the second storage vessel to discharge the hydrogen gas from the high temperature heat exchanger The internal pressure of the hydrogen storage vessel undergoing the exothermic reaction can be kept constant by opening and closing the hydrogen transfer passage, and the excess hydrogen gas discharged from the high temperature heat exchanger can be supplied to the hydrogen storage vessel under endothermic reaction, By increasing the density and the flow rate of the hydrogen gas as the heat exchange medium in the storage container, the hydrogenation reaction rate of the hydrogen storage alloy and the hydrogen gas is increased, and the heat transfer efficiency capable of rapidly transferring the reaction heat generated during the endothermic reaction to the low temperature heat exchanger is remarkably improved There is an effect that can be.

According to an aspect of the present invention, there is provided a cooling and heating apparatus using a hydrogen storage alloy that generates heat and absorbs heat as hydrogen gas is occluded and released, A first hydrogen storage vessel in which a hydrogen storage alloy that absorbs heat during discharge is embedded; a first hydrogen storage vessel in which hydrogen gas introduced into the first hydrogen storage vessel is forcedly fed to the second hydrogen storage vessel, A first cycle for discharging the hydrogen gas from the first hydrogen storage vessel to the first hydrogen storage vessel and for storing the hydrogen gas in the second hydrogen storage vessel; And a second cycle in which hydrogen gas is occluded for one hydrogen storage, and a second cycle in which hydrogen gas discharged from the hydrogen storage vessel undergoing the exothermic reaction flows, Temperature heat exchanger installed in the high-temperature heat exchanger, and a high-temperature heat exchanger installed in a path of the hydrogen gas discharged from the high-temperature heat exchanger, wherein when the pressure value of the hydrogen gas introduced into the high- temperature heat exchanger reaches a preset pressure value, A heat exchanger for exchanging heat with the outside of the hydrogen storage vessel; a relief valve for opening the gas passage and moving the hydrogen gas discharged from the high temperature heat exchanger to the hydrogen storage vessel in the endothermic reaction; Temperature heat exchanger and a plurality of hydrogen gas heat exchangers are provided on the moving path of the hydrogen gas, and the hydrogen gas is supplied to the pump means, the second hydrogen storage vessel, the high temperature heat exchanger, the first hydrogen storage vessel, Temperature heat exchanger, and in the second cycle, the hydrogen is transferred to the pump means, And a path switching valve for selectively switching the path of the hydrogen gas so that the hydrogen storage alloy can be moved in the order of the hydrogen storage alloy, the small storage container, the high temperature heat exchanger, the second hydrogen storage container and the low temperature heat exchanger. A heating and cooling system using a refrigerator is provided.

The path switching valve may be provided between the second hydrogen storage vessel, the high temperature heat exchanger, and the low temperature heat exchanger so that the hydrogen gas flows from the second hydrogen storage vessel toward the high temperature heat exchanger in the first cycle. Temperature heat exchanger so that the hydrogen gas can be transferred from the second hydrogen storage vessel to the low temperature heat exchanger in the second cycle, A first path switching valve for opening a hydrogen passage in the hydrogen storage vessel on the side of the low temperature heat exchanger; and a second path switching valve provided between the high temperature heat exchanger, the first hydrogen storage vessel and the second hydrogen storage vessel, Temperature hydrogen gas in the high-temperature heat exchanger so that gas can be transferred from the high-temperature heat exchanger to the first hydrogen- And the hydrogen flow path on the second hydrogen storage vessel side is opened in the high temperature heat exchanger so that the hydrogen gas can be moved from the high temperature heat exchanger to the second hydrogen storage vessel side Temperature heat exchanger, wherein the hydrogen gas is supplied from the first hydrogen storage vessel to the low-temperature heat exchanger in the first cycle, and the second path switching valve is provided between the first hydrogen storage vessel, the low temperature heat exchanger and the high- Temperature heat exchanger so that the hydrogen gas can be transferred from the first hydrogen storage vessel to the high-temperature heat exchanger in the second cycle, A third path switching valve for opening the hydrogen transfer path on the side of the high temperature heat exchanger in the first hydrogen storage vessel, And a second hydrogen storage tank provided between the first hydrogen storage tank and the hydrogen storage tank, wherein the hydrogen storage tank is disposed between the first hydrogen storage tank and the hydrogen storage tank, To open the hydrogen passage on the first hydrogen storage vessel side by the pump means so that the hydrogen gas can be moved from the pump means to the first hydrogen storage vessel side in the second cycle, Valve.

The first and second hydrogen storage vessels may include a body having an inlet formed at an upper portion thereof and an outlet formed at a lower portion thereof, a plurality of diffusion holes formed in the upper and lower surfaces thereof, a heat insulating member disposed inside the body, And a hydrogen storage alloy embedded in the interior of the member.

The first and second hydrogen storage vessels further include a pair of filter members interposed between the upper and lower surfaces of the body and the upper and lower surfaces of the heat insulating member to diffuse the hydrogen introduced into the body through the inlet .

It is more preferable that the hydrogen gas is a mixed gas of hydrogen and an inert gas.

According to the present invention, the first cycle in which the hydrogen gas is moved in the order of the pump means, the second hydrogen storage vessel, the high temperature heat exchanger, the first hydrogen storage vessel and the low temperature heat exchanger, A circulation structure for alternately performing the second cycle in which the vessel is moved in the order of the vessel, the high temperature heat exchanger, the second hydrogen storage vessel, and the low temperature heat exchanger is taken, and the circulation structure of the first and second hydrogen storage vessels, The high-temperature heat exchanger continuously receives the high-temperature hydrogen gas, and the low-temperature heat exchanger continuously introduces the low-temperature hydrogen gas into the high-temperature heat exchanger and the low-temperature heat exchanger to increase the heat efficiency There is an effect that can be.

In addition, the hydrogen gas heated and cooled by heat exchange with the hydrogen storage alloy powder by the heat generation and endothermic reaction of the hydrogen storage alloy supplies heat of reaction to the high temperature heat exchanger and the low temperature heat exchanger, and heat exchange is performed between the high temperature heat exchanger and the low temperature heat exchanger, Can be remarkably improved.

The hydrogen gas may be a mixed gas of hydrogen and an inert gas, and a relief valve may be provided on the hydrogen passage of the first hydrogen storage vessel and the second storage vessel to discharge the hydrogen gas from the high temperature heat exchanger The internal pressure of the hydrogen storage vessel undergoing the exothermic reaction can be kept constant by opening and closing the hydrogen transfer passage, and the excess hydrogen gas discharged from the high temperature heat exchanger can be supplied to the hydrogen storage vessel under endothermic reaction, By increasing the density and the flow rate of the hydrogen gas as the heat exchange medium in the storage container, the hydrogenation reaction rate of the hydrogen storage alloy and the hydrogen gas is increased, and the heat transfer efficiency capable of rapidly transferring the reaction heat generated during the endothermic reaction to the low temperature heat exchanger is remarkably improved There is an effect that can be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

1 is a schematic view illustrating a structure of a cooling and heating apparatus using a hydrogen storage alloy according to an embodiment of the present invention.

In an embodiment of the present invention, in order to rapidly transfer the reaction heat generated in the hydrogen storage vessel under the endothermic reaction to the low temperature heat exchanger, the hydrogen and the hydrogen gas mixed with argon as the inert gas 15: 1 Respectively.

1, the cooling / heating apparatus using the hydrogen storage alloy according to an embodiment of the present invention includes first and second hydrogen storage containers 10 and 20, a pump means 30, a high temperature heat exchanger 40, a relief valve 50, a low temperature heat exchanger 60, a path switching valve 70, and an axial flow end 80.

One of the first and second hydrogen storage vessels 10 and 20 is connected to the flow path of the hydrogen gas discharged from the low temperature heat exchanger 60 and the flow path of the hydrogen gas discharged from the high temperature heat exchanger 40, Temperature heat exchanger 40 and the flow path of the hydrogen gas flowing into the low temperature heat exchanger 60. The structure of the first and second hydrogen storage vessels 10 and 20 is 2 will be described in detail.

The pump means 30 is provided in a transfer passage of the hydrogen gas discharged from the low-temperature heat exchanger 60 to be described later, and is provided with a pump for feeding the hydrogen gas from the first hydrogen storage vessel 10 to the second hydrogen storage vessel 20 And a second cycle in which the hydrogen is force-fed from the second hydrogen storage vessel 20 to the first hydrogen storage vessel 10, alternately.

The accumulator stage 80 serves to supply hydrogen to the first hydrogen storage vessel 10 in the initial operation after storing the hydrogen gas.

The high-temperature heat exchanger (40) is formed of a material having good heat resistance and is formed by bending a plurality of times in order to increase the heat exchange area with the outside air to improve heat exchange efficiency. The high-temperature heat exchanger (40) is connected to the hydrogen passage through which the hydrogen gas discharged from the first hydrogen storage vessel (10) and the second hydrogen storage vessel (20) flows, and the other end is connected to the high temperature heat exchanger 40 are connected to a hydrogen passage through which the hydrogen gas is discharged to the first and second hydrogen storage vessels 10, 20, respectively.

The relief valve 50 is installed in a hydrogen passage through which the hydrogen gas having passed through the high temperature heat exchanger 40 is discharged to the first and second hydrogen storage vessels 10 and 20, When the pressure value of the gas reaches a preset pressure value, the hydrogen gas passing through the high temperature heat exchanger 40 is released to the first and second hydrogen storage containers 10 and 20, 40 and the first and second hydrogen storage vessels 10, 20 as well as the hydrogen gas discharged from the high temperature heat exchanger 40 to the first hydrogen storage vessel 10 or the second hydrogen storage vessel 10, To the storage container (20).

The low-temperature heat exchanger (60) is formed of a material resistant to low temperature and is formed bending a plurality of times in order to increase the heat exchange area with the outside air to improve the heat exchange efficiency. The low-temperature heat exchanger (60) is connected to a hydrogen passage through which the hydrogen gas discharged from the first hydrogen storage vessel (10) and the second hydrogen storage vessel (20) flows, And the hydrogen gas passing through the unit 40 is connected to the hydrogen passage through which the hydrogen gas is discharged to the first and second hydrogen storage vessels 20, respectively.

The path switching valve 70 includes a first path switching valve 71, a second path switching valve 72, a third path switching valve 73, Pump means 30 and a fourth path switching valve 74 and the hydrogen in the first cycle is supplied to the pump means 30, the second hydrogen storage vessel 20, the high temperature heat exchanger 40, The first hydrogen storage vessel 10, the high temperature heat exchanger 40 and the second hydrogen storage vessel 20 are moved in the order of the vessel 10, the low temperature heat exchanger 60, And the low-temperature heat exchanger (60) in that order.

The first path switching valve 71 is provided between the second hydrogen storage vessel 20, the high temperature heat exchanger 40 and the low temperature heat exchanger 60 so that the hydrogen gas is supplied to the second hydrogen storage vessel 20 during the first cycle, Temperature heat exchanger 40 from the second hydrogen storage vessel 20 so that the hydrogen gas in the second cycle is transferred to the second hydrogen storage vessel Temperature heat exchanger 60 from the second hydrogen storage vessel 20 to the low-temperature heat exchanger 60 so as to be moved from the low-temperature heat exchanger 60 to the low-temperature heat exchanger 60.

The second path switching valve 72 is installed between the high temperature heat exchanger 40, the first hydrogen storage vessel 10 and the second hydrogen storage vessel 20 so that the hydrogen gas in the first cycle flows through the high temperature heat exchanger 40, Temperature hydrogen gas from the high-temperature heat exchanger 40 to the first hydrogen storage vessel 10 so that the hydrogen gas in the second cycle can be transferred to the first hydrogen storage vessel 10 from the high-temperature heat exchanger 40 To the second hydrogen storage vessel 20 so as to be able to move from the first hydrogen storage vessel 20 to the second hydrogen storage vessel 20.

The third path switching valve 73 is provided between the first hydrogen storage vessel 10, the low temperature heat exchanger 60 and the high temperature heat exchanger 40 so that the hydrogen gas is supplied to the first hydrogen storage vessel 10 during the first cycle, Temperature heat exchanger 60 side in the first hydrogen storage vessel 10 so that the first hydrogen storage vessel 10 can be moved to the first hydrogen storage vessel 10 To the high-temperature heat exchanger (40) side in the first hydrogen storage vessel (10).

The fourth path switching valve 74 is provided between the pump means 30, the second hydrogen storage vessel 20 and the first hydrogen storage vessel 10 so that hydrogen gas in the first cycle is supplied to the pump means 30 (30) opens the hydrogen passage connected to the second hydrogen storage vessel (20) so that the second hydrogen storage vessel (20) can be moved toward the hydrogen storage vessel (20) And serves to open the hydrogen passage connected to the first hydrogen storage vessel 10 by the pump means 30 so as to be moved to the hydrogen storage vessel 10 side.

FIG. 2 is a perspective view of an entire first and second reactors of a cold / hot water heater using a hydrogen storage alloy according to an embodiment of the present invention. FIG.

2, the first and second hydrogen storage vessels 10 and 20 include cylindrical bodies 11 and 21, heat insulating members 12 and 22 installed inside the bodies 11 and 21, A hydrogen storage alloy 13 and 23 embedded in the heat insulating members 12 and 22 and a pair of filter members (not shown) interposed between the upper surfaces of the bodies 11 and 21 and the upper surfaces of the heat insulating members 12 and 22 14, 24).

The bodies 11 and 21 are formed in a cylindrical shape and have inlet ports 11a and 21a for introducing hydrogen into the upper surface thereof and exhaust ports 11b and 21b at the lower surface thereof.

A plurality of diffusion holes 12a and 22a are formed on the upper and lower surfaces of the heat insulating members 12 and 22. The heat sinks 12 and 22 are formed in a cylindrical shape having a receiving part therein and are installed inside the bodies 11 and 21, When the alloy (13, 23) reacts exothermically and endothermically, it functions to prevent heat exchange with the outside. At this time, it is preferable that the heat insulating members 12 and 22 are formed of a material having good heat insulation property to prevent heat exchange between the hydrogen storage alloy 13 and the outside.

The hydrogen storage alloy (13, 23) is a metal in which endothermic reaction occurs when metal hydrate is formed when hydrogen is occluded, and endothermic reaction occurs when hydrogen is released from hydrogen storage alloy (13, 23). Preferable conditions of the hydrogen-storing alloy (13, 23) include internal activation, storage of hydrogen gas, high absorption and release rate of hydrogen gas, deterioration due to repeated absorption and storage of hydrogen gas And the alloy should have a small particle size and excellent durability.

The filter members 14 and 24 separate the hydrogen gas and the hydrogen storage alloy powder when the hydrogen gas is released, and the hydrogen-storing alloy powder in the form of powder is released to the outside through the diffusion holes 12a and 22a of the heat insulating members 12 and 22 .

The operation of the cooling and heating apparatus using the hydrogen storage alloy according to an embodiment of the present invention will now be described with reference to FIGS. 3 and 4. FIG.

FIG. 3 is a view showing the moving direction of the hydrogen gas according to the first cycle of the present invention, and FIG. 4 is a view showing the moving direction of the hydrogen gas according to the second cycle of the present invention.

It should be noted that the operation of the cooling and heating apparatus using the hydrogen storage alloy of the present invention is a circulation operation performed continuously before the description, but the operation has been explained step by step for convenience of explanation in one embodiment of the present invention.

First, when the hydrogen gas stored in the initial condensing stage at the first cycle flows into the first hydrogen storage vessel 10, hydrogen in the hydrogen gas is stored in the hydrogen storage alloy embedded in the first hydrogen storage vessel, And argon gas, which is an inert gas, remains in the first hydrogen storage vessel.

Thereafter, when the pump means 30 is operated, the metal hydrate contained in the first hydrogen storage vessel is separated into a hydrogen storage alloy and hydrogen, and an endothermic reaction occurs. The hydrogen gas cooled by the endothermic reaction Is moved to the low temperature heat exchanger (60) by the suction force of the pump means (30) and is force-fed to the second hydrogen storage vessel (20). At this time, the cooled hydrogen gas passes through the low temperature heat exchanger (60) and heat exchange with the outside air occurs.

The hydrogen gas forcedly fed to the second hydrogen storage container 20 is then pressurized and compressed by the opening and closing operation of the relief valve 50 so that most of the hydrogen gas is stored in the hydrogen storage alloy 23 built in the second hydrogen storage container 20. [ And the remaining hydrogen gas is transferred to the high-temperature heat exchanger 40 side. The hydrogen storage alloy 23 contained in the second hydrogen storage vessel 20 is exothermically reacted with the hydrogen gas stored therein and is stored in the hydrogen storage alloy 23, (20), the hydrogen gas is heated to a high temperature by an exothermic reaction.

The high-temperature hydrogen gas passing through the second hydrogen storage vessel 20 flows into the high-temperature heat exchanger 40, and the high-temperature hydrogen gas undergoes heat exchange with the outside air while passing through the high-temperature heat exchanger 40. The hydrogen gas that has passed through the high temperature heat exchanger passes through the relief valve (50) to the passage of the hydrogen gas discharged from the high temperature heat exchanger (40). At this time, the relief valve 50 closes the path of the hydrogen gas discharged from the high-temperature heat exchanger 40 until the internal pressure of the high-temperature heat exchanger 40 reaches a predetermined pressure. For example, when the hydrogen gas is 14 atm as a mixed gas of hydrogen and argon at a ratio of 15: 1 and the set air pressure of the relief valve 50 is 12 atm, hydrogen gas discharged from the relief valve 50 Hydrogen gas is released at a pressure of 2 atm. Thus, excess hydrogen gas discharged from the relief valve 50 flows into the first hydrogen storage vessel 10.

The reason why the surplus hydrogen gas exceeding the set pressure by using the relief valve 50 is discharged to the first hydrogen storage vessel 10 as described above is that the first hydrogen storage vessel 10 is discharged by the pump means 30 during the first cycle, The hydrogen stored in the storage vessel 10 is forcibly discharged to the second hydrogen storage vessel 20 so that the interior of the first hydrogen storage vessel 10 is extremely cooled down due to the endothermic reaction of the hydrogen storage alloy 13 And the hydrogen is released. As a result, the flow of the hydrogen gas is stopped, and the heat exchange becomes difficult as the heat is close to the vacuum. As a result, the dehydrogenation reaction becomes lower as the pressure and the temperature of the hydrogen storage alloy 13 become lower Temperature hydrogen gas is introduced into the first hydrogen storage vessel in a state close to the low-temperature vacuum through the high-temperature heat exchanger 40 to smooth the endothermic reaction in the first hydrogen storage vessel 10, U And to improve the heat exchange rate between the hydrogen storage alloy and the hydrogen gas. And, in the second cycle, it is also the same reason.

Next, the hydrogen gas introduced into the first hydrogen storage vessel 10 is again forcedly fed to the first hydrogen storage vessel 10 through the low temperature heat exchanger 60 by the pump means 30.

On the other hand, when the storage amount of the hydrogen gas is saturated in the second hydrogen storage vessel 20, although not shown in the drawing, the control unit for controlling the respective path switching valves 70 is connected to each path switching valve 70 The hydrogen gas stored in the second hydrogen storage vessel 20 is forcedly supplied to the first hydrogen storage vessel 10 through the low temperature heat exchanger 60 by the pump means 30, At this time, the time point when the path switching valve 70 switches the hydrogen passage is determined by the saturation amount, the pressure, the temperature of the second hydrogen storage vessel 20, the discharge amount of the first hydrogen storage vessel 10, And so on.

Then, most of the hydrogen gas forced to be fed to the first hydrogen storage vessel 10 is stored in the hydrogen storage alloy 13 contained in the first hydrogen storage container, and the remaining hydrogen gas is moved to the high temperature heat exchanger 40 side . The hydrogen storage alloy 13 contained in the first hydrogen storage container 10 is heated by the hydrogen gas stored in the hydrogen storage alloy 13 so that the hydrogen stored in the hydrogen storage alloy 13 and the remaining argon gas, 10 is heated to a high temperature by an exothermic reaction.

The high-temperature hydrogen gas passing through the first hydrogen storage vessel 10 is introduced into the high-temperature heat exchanger 40 and exchanges heat with the external air while passing through the high-temperature heat exchanger 40. The hydrogen gas that has passed through the high temperature heat exchanger (40) passes through a relief valve (50) provided in a flow path of hydrogen gas discharged from the high temperature heat exchanger (40). At this time, the surplus hydrogen gas discharged from the relief valve 50 flows into the second hydrogen storage vessel 20 as described in the first cycle.

Next, the hydrogen gas introduced into the second hydrogen storage vessel 20 is again forcedly fed to the first hydrogen storage vessel 10 through the low temperature heat exchanger 60 by the pump means 30.

In addition, as for the operation of storing and discharging the hydrogen gas flowing into the first and second hydrogen storage vessels 10 and 20, hydrogen flows into the first and second hydrogen storage vessels 10 and 20 through the inlets 11a and 21a formed in the upper portions of the bodies 11 and 21 , The introduced hydrogen passes through the filter members 14 and 24. At this time, the hydrogen gas passes through the filter members 14 and 24 and diffuses through the diffusion holes 12a and 22a formed on the upper surfaces of the heat insulating members 12 and 22, and enters the inside of the heat insulating members 12 and 22 . At this time, the hydrogen storage alloys 13 and 23 are embedded in the heat insulating members 12 and 22. The hydrogen that has entered the inside of the heat insulating members 12 and 22 is stored in the hydrogen storage alloy 13, The unreacted and surplus hydrogen gas passes through the diffusion holes 12a and 22a formed in the lower surface of the heat insulating members 12 and 22 and passes through the lower surface of the heat insulating members 12 and 22 and the lower surface of the body 11 21, 21, and is discharged to the discharge ports 11b, 21b through the filter members 14, 24 interposed therebetween.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. Accordingly, the appended claims are intended to cover such modifications or changes as fall within the scope of the invention.

FIG. 1 is a schematic view illustrating a structure of a cooling and heating apparatus using a hydrogen storage alloy according to an embodiment of the present invention; FIG.

FIG. 2 is an overall perspective view of a first and a second reactor of a cold and heat radiator using a hydrogen storage alloy according to an embodiment of the present invention,

3 is a view showing the direction of movement of hydrogen according to the first cycle of the present invention,

Figure 4 illustrates the direction of movement of hydrogen according to the second cycle of the present invention,

5 is a view schematically showing a configuration of a cooling and heating apparatus using a conventional hydrogen storage alloy.

[Description of Drawings]

10: first hydrogen storage vessel 11, 21: body

11a, 21a: Inlet port 11b, 21b: Outlet port

12, 22: Insulating material 12a, 22a:

13,23: Hydrogen storage alloy 14,24: Filter element

20: second hydrogen storage vessel 30: pump means

40: high temperature heat exchanger 50: relief valve

60: low temperature heat exchanger 70: path switching valve

80: Axis confined pressure stage

Claims (5)

1. A cooling / heating apparatus using a hydrogen storage alloy which generates heat and absorbs heat as hydrogen gas is occluded and released, A first and a second hydrogen storage vessel in which a hydrogen storage alloy that exothermically reacts when hydrogen gas is occluded and endothermically reacts when hydrogen gas is released; A first cycle in which hydrogen gas introduced into the first hydrogen storage vessel is forcibly fed to the second hydrogen storage vessel to release hydrogen gas from the first hydrogen storage vessel and to store hydrogen gas in the second hydrogen storage vessel, A pump means for alternately performing a second cycle of forcedly feeding the hydrogen gas introduced into the storage container to the first hydrogen storage container to release hydrogen gas from the second hydrogen storage container and to store hydrogen gas for storing the first hydrogen; and; A high temperature heat exchanger for introducing hydrogen gas discharged from the hydrogen storage vessel in the exothermic reaction and performing heat exchange with the outside; Wherein the high-temperature heat exchanger is provided with a passage for the hydrogen gas discharged from the high-temperature heat exchanger, and when the pressure value of the hydrogen gas introduced into the high-temperature heat exchanger reaches a preset pressure value, A relief valve for moving the hydrogen gas discharged from the high temperature heat exchanger to the hydrogen storage vessel in the endothermic reaction; A low temperature heat exchanger for introducing hydrogen gas passing through the hydrogen storage vessel in the endothermic reaction and performing heat exchange with the outside; And Wherein the plurality of hydrogen gas storage chambers are provided on the moving path of the hydrogen gas in such a manner that the hydrogen gas flows in the order of the pump means, the second hydrogen storage vessel, the high temperature heat exchanger, the first hydrogen storage vessel, And the second hydrogen storage tank is moved in the second cycle so that the hydrogen is transferred in the order of the pump means, the first hydrogen storage vessel, the high temperature heat exchanger, the second hydrogen storage vessel, and the low temperature heat exchanger. And a path switching valve for selectively changing the temperature of the hydrogen storage alloy. The method according to claim 1, Wherein the path- Temperature heat exchanger and the second hydrogen storage vessel, the high-temperature heat exchanger, and the low-temperature heat exchanger so that the hydrogen gas can be transferred from the second hydrogen storage vessel to the high- Temperature heat exchanger side in the second hydrogen storage vessel so that the hydrogen gas can be transferred from the second hydrogen storage vessel to the low temperature heat exchanger side in the second cycle, A first path switching valve for opening the hydrogen transfer path of the fuel cell;  The high-temperature heat exchanger is disposed between the high-temperature heat exchanger, the first hydrogen storage vessel, and the second hydrogen storage vessel so that the hydrogen gas can be transferred from the high-temperature heat exchanger to the first hydrogen storage vessel in the first cycle. Temperature heat exchanger to open the hydrogen passage on the side of the first hydrogen storage vessel in the high-temperature heat exchanger so that the hydrogen gas can be transferred from the high-temperature heat exchanger to the second hydrogen storage vessel side in the second cycle, A second path switching valve for opening the hydrogen passage on the storage vessel side; Temperature heat exchanger and the high temperature heat exchanger so that the hydrogen gas can be transferred from the first hydrogen storage vessel to the low temperature heat exchanger in the first cycle, Temperature heat exchanger side in the first hydrogen storage vessel so that the hydrogen gas can be transferred from the first hydrogen storage vessel to the high-temperature heat exchanger side in the second cycle, A third passage switching valve for opening the hydrogen passage of the first passage; And And a second hydrogen storage vessel provided between the pump means, the second hydrogen storage vessel, and the first hydrogen storage vessel so that the hydrogen gas can be moved from the pump means to the second hydrogen storage vessel side in the first cycle, 2 hydrogen storage vessel side hydrogen storage vessel side hydrogen storage vessel side hydrogen storage vessel side hydrogen storage vessel side hydrogen storage vessel side hydrogen storage vessel side hydrogen storage vessel side hydrogen storage vessel side hydrogen storage vessel side hydrogen storage vessel And a fourth path switching valve for opening the traveling path. The method according to claim 1, The first and second hydrogen storage vessels may include: A body having an inlet formed at an upper portion thereof and an outlet formed at a lower portion thereof; A heat insulating member having a plurality of diffusion holes formed on an upper surface and a lower surface thereof and installed inside the body; And And a hydrogen storage alloy embedded in the heat insulating member. The method of claim 3, The first and second hydrogen storage vessels may further include a pair of filter members interposed between the upper and lower surfaces of the body and the upper and lower surfaces of the heat insulating member to diffuse the hydrogen gas introduced into the body through the inlet Wherein the hydrogen storage alloy is used as a cooling and heating device. Wherein the hydrogen gas is hydrogen or a mixed gas of hydrogen and an inert gas.

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