JP3534559B2 - Hydrogen storage type cooling device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydrogen occlusion cooling device which repeatedly causes occlusion and desorption of hydrogen in a hydrogen occlusion alloy and obtains cold heat by utilizing an endothermic action generated when hydrogen is released.

[0002]

2. Description of the Related Art A conventional hydrogen storage cooling device using a hydrogen storage alloy will be described with reference to FIG. The heat pump cycle J1 using the hydrogen storage alloy used a shell-and-tube type heat exchanger to obtain the heating, heat radiation and cooling output of the hydrogen storage alloy J2. The heat pump cycle J1 shown in this prior art uses four shell and tube type heat exchangers J3 to J6, and each of the heat exchangers J3 to J6 enables heat exchange between the hydrogen storage alloy J2 and the heat medium. It is provided. The hydrogen storage alloy J2 of the first and second heat exchangers J3 and J4 communicates with each other through the hydrogen passage, and the hydrogen storage alloy J2 of the third and fourth heat exchangers J5 and J6 also communicates with each other through the hydrogen passage. It is provided.

In operation, the heat medium for heating is supplied to the first heat exchanger J3 and the heat medium for heat dissipation is supplied to the second heat exchanger J4. Then, the hydrogen in the first heat exchanger J3 is released and stored in the second heat exchanger J4. That is, hydrogen driving is performed. Next, the heating heat medium supplied to the first heat exchanger J3 is switched to the heat dissipation heat medium and supplied, and the heat dissipation heat medium supplied to the second heat exchanger J4 is replaced. , The heat medium for cold heat output is switched and supplied. Then, the first heat exchanger J3 stores hydrogen and the second heat exchanger J4 releases hydrogen. When the second heat exchanger J4 releases hydrogen, the heat medium for cold heat output is cooled.
That is, cold heat output is obtained. Then, the above cycle is repeated.

On the other hand, when the cold heat output is obtained from the second heat exchanger J4, the heat medium for heating is supplied to the third heat exchanger J5, and the heat medium for heat radiation is supplied to the fourth heat exchanger J6. To supply. Then, the hydrogen in the third heat exchanger J5 is released and stored in the fourth heat exchanger J6. That is, when the first and second heat exchangers J3 and J4 are obtaining cold heat output, the third and fourth heat exchangers J5 and J6 are driven by hydrogen. Next, the heating heat medium supplied to the third heat exchanger J5 is switched to the heat dissipation heat medium to be supplied, and the heat dissipation heat medium supplied to the fourth heat exchanger J6 is replaced. , The heat medium for cold heat output is switched and supplied. Then, the third heat exchanger J
5 absorbs hydrogen and the fourth heat exchanger J6 releases hydrogen. When the fourth heat exchanger J6 releases hydrogen, the heat medium for cold heat output is cooled. That is, when hydrogen is driven in the first and second heat exchangers J3 and J4, cold heat output is obtained in the third and fourth heat exchangers J5 and J6. And
Repeat the above cycle.

[0005]

[Problems to be Solved by the Invention] Each heat exchanger J3 to J6
In addition, since the heat medium for heating and the heat medium for heat radiation, or the heat medium for heat radiation and the heat medium for cold heat output are switched and supplied, a large number of switching valves J7 to J14 are required in the conventional heat pump cycle J1. Become. As described above, when a large number of switching valves J7 to J14 are used, the failure probability increases, which hinders improvement in durability. Also, each switching valve J7 to J14
Since it switches at a relatively high frequency, there was also a problem that the operating noise was noticeable.

Further, the heat exchangers J3 to J6 for exchanging heat between the hydrogen storage alloy J2 and the heat medium are temporarily evacuated to give hydrogen to the hydrogen storage alloy J2, and then the hydrogen is stored under high pressure. Since it is supplied, the shell and tube type is used so that it can withstand both low pressure and high pressure. However, shell and tube type heat exchangers J3 to J6
Has a large physique, so the heat loss due to the heat transfer of the part not involved in heat exchange of the hydrogen storage alloy is large,
There was a problem that the pressure loss during hydrogen transfer was large and the cooling efficiency was low as a result.

Further, the shell-and-tube type heat exchanger has a large size and, as shown in the above-mentioned prior art,
The heat pump cycle J1 requires at least four heat exchangers J3 to J6 to continuously obtain the cold heat output, so that the heat pump cycle J1 becomes large and, as a result, the hydrogen storage cooling device becomes large. There was a problem.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. A first object of the present invention is to provide a long-term reliability which does not require a switching valve for switching a heat transfer medium for exchanging heat with a hydrogen storage alloy. A second object of the present invention is to provide a high hydrogen storage cooling device, which has a small pressure loss during hydrogen transfer and a small heat loss, and which is excellent in heat transfer efficiency. The purpose of is to provide a hydrogen storage cooling device that can be miniaturized.

[0009]

The hydrogen storage cooling apparatus of the present invention employs the following technical means in order to achieve the above object. (Means of Claim 1) A hydrogen storage cooling device utilizes the heat absorption of a hydrogen storage alloy at the time of releasing hydrogen, wherein a first chamber in which the hydrogen storage alloy is enclosed, the first chamber and the hydrogen passage. And a plurality of cells having a second chamber in which a hydrogen storage alloy is filled, and a heating region in which a heating medium for heating, which is provided in contact with the first chamber, is arranged, A hydrogen driving unit having a first heat radiation area, in which a heat radiation medium for heat radiation provided in contact with the second chamber is arranged, and a heat radiation medium for heat radiation provided in contact with the first chamber, are arranged. And a second heat radiating region, and a cold heat output part having a cold heat output region in which a heat medium for cold heat output, which is provided so as to be in contact with the second chamber, is arranged; Cell heating means for repeatedly moving to the cold heat output part, Heat medium, the heat medium for the heat radiation, at least one or more of the heat medium of the heat medium for the cold output
It is characterized by being sprayed or dropped into at least one of the first chamber and the second chamber.

(Means for Claim 2) In the hydrogen storage cooling device according to claim 1, the first chamber and the second chamber each have a flat shape, and one surface thereof is convexly curved and The other surface opposite to the surface is provided so as to be curved in a concave shape.

(Means for Claim 3) In the hydrogen storage cooling device according to claim 1 or 2, the plurality of cells are arranged so that the first chamber and the second chamber are respectively radial. Cell moving means rotationally drives the plurality of cells radially, and the heating area and the second heat radiation area are partitioned in a first container that covers the group of the first chamber, and the first heat radiation area and the cold heat The output area is defined in a second container that covers the group of the second chambers.

(Means of claim 4) In the hydrogen storage cooling apparatus according to any one of claims 1 to 3, the plurality of cells are provided with the second chamber divided into two, and Hydrogen is moved from the first chamber to one of the divided second chambers, and hydrogen is moved from the one of the second chambers to the other of the second chambers to obtain the cold heat output of the first stage, It is characterized in that it is provided so that hydrogen is transferred from the second chamber to the first chamber to obtain the second stage cold heat output.

[0013]

The plurality of cells are repeatedly moved to the hydrogen driving section and the cold heat output section by the cell moving means. When the first chamber comes into contact with the heating heat medium in the heating region and the second chamber comes into contact with the heat radiation medium in the first heat radiating region when the cell moves to the hydrogen driving unit, hydrogen absorption in the first chamber The alloy is heated and the hydrogen storage alloy in the second chamber is radiated. Then, hydrogen is released from the hydrogen storage alloy in the first chamber, and the hydrogen storage alloy in the second chamber stores hydrogen. That is, hydrogen driving is performed in one cell.

When the cell moves to the cold heat output portion, when the first chamber contacts the heat carrier for heat radiation in the second heat radiation region and the second chamber contacts the heat medium for cold heat output in the cold heat output region,
The hydrogen storage alloy in the first chamber is radiated. Then, the pressure in the first chamber decreases, the hydrogen storage alloy in the first chamber stores hydrogen, and the hydrogen storage alloy in the second chamber releases hydrogen.
When the hydrogen storage alloy in the second chamber releases hydrogen, the heat medium for cold heat output is cooled. That is, cold heat output can be obtained in one cell. Then, the plurality of cells repeats the above cycle, whereby the heat medium for cold heat output cooled from the cold heat output region can be continuously obtained.

A heating medium for heating, a heating medium for radiating heat,
At least one heat medium of the heat medium for cold heat output,
It is jetted or dropped into at least one of the first chamber and the second chamber and drops along the surface of at least one of the first chamber and the second chamber (the surface of the first chamber or the second chamber in which the heat medium travels the surface). If is hydrophilic, it falls along the surface of the first chamber or the second chamber in a film form), so that at least one of a heat medium for heating, a heat medium for radiating heat, and a heat medium for cold heat output. Heat exchange is performed between the above heat medium and at least one of the first chamber and the second chamber.

[0016]

As described above, in the hydrogen storage cooling apparatus of the present invention, the type of the heat medium contacting the tube containing the hydrogen storage alloy is switched to perform heat exchange with the hydrogen storage alloy. Instead of moving the cell by the cell moving means, the first chamber and the second chamber for storing the hydrogen storage alloy move to change the type of the heat medium. A switching valve for switching between types is not required. Further, the first chamber and the second chamber are only communicated with each other through the hydrogen passage, and an opening / closing valve for the hydrogen passage is not necessary. As described above, the hydrogen storage cooling device of the present invention does not require a switching valve in the heat pump cycle, so that the failure probability is smaller than in the conventional case, and as a result, long-term reliability can be improved.

Since the hydrogen storage cooling apparatus of the present invention uses a plurality of cells in which the first chamber and the second chamber containing the hydrogen storage alloy are connected by the hydrogen passages, a shell-and-tube type heat exchanger is used. In comparison, the pressure loss at the time of hydrogen transfer can be suppressed to a small level, and the heat exchange in the portion not involved in heat exchange is small and the heat loss is reduced, so that the cooling efficiency can be improved.

Since the hydrogen storage cooling device of the present invention does not use the conventional shell & tube type heat exchanger but uses a plurality of cells containing hydrogen storage alloy, the shell & tube type heat exchanger is not used. The size of the heat pump cycle can be made smaller than that of the one using a plurality of exchangers, and as a result, the hydrogen storage cooling device can be made very small.

In the hydrogen storage cooling apparatus of the present invention, as indicated by the action, at least one heating medium for heating, a heating medium for radiating heat, and a heating medium for outputting cold heat are the first heating medium. The heat is exchanged by being sprayed or dropped into at least one of the chamber and the second chamber. In this way, by supplying the heat medium to the first chamber or the second chamber by jetting or dropping, the heat exchange efficiency with the heat medium can be improved, and as a result, the cooling efficiency of the hydrogen storage cooling device can be improved. Can be improved.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described based on examples and modifications. [Structure of First Embodiment] The first embodiment is an application of the hydrogen storage cooling device of the present invention to a cooling device for indoor air conditioning.
The first embodiment will be described with reference to FIGS.

(Schematic Description of Cooling Device 1) The schematic configuration of the cooling device 1 of this embodiment will be described with reference to FIG. In this embodiment, a heat pump cycle 2 using a hydrogen storage alloy is used.
As an example, a two-stage cycle was used. The two-stage cycle means that the second chamber of the present invention is divided, hydrogen is transferred from the first chamber to one of the divided second chambers, and one second chamber is moved to the other second chamber. It moves hydrogen to obtain the first stage cold heat output, and moves hydrogen from the other second chamber to the first chamber to obtain the second stage cold heat output, which will be described in detail later.

The cooling apparatus 1 to which this embodiment is applied is roughly classified into a heat pump cycle 2 using a hydrogen storage alloy.
And a combustion device 3 for producing heated water (equivalent to a heat medium for heating, which is water in this embodiment) for heating the hydrogen storage alloy,
Facility water cooling means 4 for cooling facility water that dissipates heat from the hydrogen storage alloy (water in this embodiment, which corresponds to a heat medium for heat dissipation).
And an indoor air conditioner 5 that air-conditions the room with cold heat output water (equivalent to a heat medium for cold heat output, which is water in this embodiment) cooled by heat absorption generated by the hydrogen releasing action of the hydrogen storage alloy. Control device 6 for controlling each electric functional component
Composed of and.

The heat pump cycle 2, the combustion device 3, the facility water cooling means 4 and the control device 6 are installed outdoors as an outdoor unit 7, and an indoor air conditioner 5 is installed in the room. Further, the cooling device 1 according to the present embodiment is a so-called multi-air conditioner in which a plurality of indoor air conditioners 5 can be connected to one outdoor unit 7.

(Description of Heat Pump Cycle 2) The heat pump cycle 2 of this embodiment uses the two-stage cycle as described above, and as shown in FIG. 1, the upper chamber S1 in which the hydrogen storage alloy is enclosed. (Corresponding to the first chamber), a middle chamber S2 (corresponding to the second chamber) communicating with the upper chamber S1 through a hydrogen passage S4 and containing a hydrogen storage alloy, in the upper chamber S1 and in the middle chamber. A plurality of cells S, which are connected to each other through S2 through a hydrogen passage S4 and have a lower chamber S3 (corresponding to a second chamber) in which a hydrogen storage alloy is enclosed, are used. In this example, 12 to 18 cells S were used.

Hydrogen storage alloys have different hydrogen equilibrium pressures.
It uses a seed, and the high temperature hydrogen storage alloy (hereinafter, high temperature alloy HM) powder with the highest hydrogen equilibrium temperature at the same equilibrium hydrogen pressure is enclosed in the upper chamber S1 and the medium temperature in the middle chamber S2. Enclose powder of hydrogen storage alloy (hereinafter, medium temperature alloy MM),
The lower chamber S3 is filled with a powder of a low temperature hydrogen storage alloy (hereinafter, low temperature alloy LM) having the same hydrogen pressure and the lowest hydrogen equilibrium temperature. Explaining with reference to the PT refrigeration cycle diagram of FIG. 6, the hydrogen storage alloy having alloy properties on the relatively high temperature side is the high temperature alloy HM, the hydrogen storage alloy having alloy properties on the low temperature side is the low temperature alloy LM, and the middle is medium temperature. Alloy MM.

One cell S is formed by drawing metal such as stainless steel or copper, which does not permeate hydrogen into a hydrogen storage alloy, and is formed into a cell by a joining method such as vacuum brazing or welding. (Upper, middle and lower chambers S1, S2,
A container that forms S3 and hydrogen passage S4) is molded, the inside is filled with a powdery hydrogen storage alloy, vacuumed, then activated, and then filled with hydrogen at high pressure and sealed by welding. Is.

The outer shape of one cell S is shown in FIG. 3, and the upper, middle and lower chambers S1, S2 and S3 each have a plate shape (an example of a flat container shape), and one side of each chamber is , Has a shape connected by a rod-shaped connecting portion S5 in which a hydrogen passage S4 is formed. Also, the upper, middle and lower chambers S1 and S
Each of S 2 and S 3 has one surface curved in a convex shape and the other surface facing the other curved in a concave shape. As described above, since the chambers are provided with the concavo-convex surfaces facing each other, tensile stress and compressive stress are applied to the facing surfaces under a low pressure during vacuuming and a high pressure during hydrogen filling. Deformation of the chamber is suppressed to a small level, resulting in excellent pressure resistance. Note that, as an example of the direction of the unevenness, FIG. 3 shows an example in which the plate-shaped chamber is curved so as to be viewed from the side, but the plate-shaped chamber is curved so as to be viewed from the axial direction. Alternatively, the plate-shaped chamber may be provided so as to be curved when viewed from both side and axial directions such as a dome shape.

The plurality of cells S are, as shown in FIG.
The middle and lower chambers S1, S2, S3 are arranged so as to have a radial shape. In this embodiment, the connecting portions S5 of the plurality of cells S are bundled and fixed around the rotary shaft 8.
A group of a plurality of upper chambers S1 (corresponding to the group of the first chamber), a group of a plurality of middle chambers S2 (corresponding to a group of the second chamber), a group of a plurality of lower chambers S3 (to the group of the second chamber) (Corresponding), are respectively arranged radially. The plurality of cells S fixed around the rotary shaft 8 are rotationally driven by a cell moving unit (not shown), and the cell moving unit slowly and continuously rotates the plurality of cells S. There is (for example, about 20 laps per hour).

On the other hand, in the heat pump cycle 2 of the two-stage type cycle, as shown in FIG. 1, the hydrogen drive part α for forcibly moving the hydrogen in the upper chamber S1 into the lower chamber S3 and the lower drive chamber S3. First to move the transferred hydrogen to the middle chamber S2
A cold heat output portion β and a second cold heat output portion γ that moves the hydrogen that has moved into the middle chamber S2 to the upper chamber S1 are provided. The hydrogen drive part α is heated water (for example, 80 ° C.) that contacts the upper chamber S1
Is supplied to the heating chamber α1, and pressurized water (for example, about 56 ° C.) in contact with the middle chamber S2 is supplied to the heating chamber α2.
2. Facility water in contact with the lower chamber S3 (for example, about 28 ° C)
Lower heat radiation area α3 (corresponding to the first heat radiation area)
Equipped with.

The first cold heat output section β is supplied with an upper stage boosting region β 1 to which the boosted water (for example, about 58 ° C.) contacting the upper chamber S 1 is supplied, and a facility water (for example, about 28 ° C.) contacting with the middle chamber S 2 It is provided with a middle heat radiation area β2 and a lower heat output area β3 for outputting cold heat output water (for example, about 13 ° C.) in contact with the lower chamber S3. The second cold heat output part γ is in the upper chamber S
Upper stage heat radiation area γ1 (corresponding to the second heat radiation area), middle stage chamber S2 where facility water in contact with 1 (for example, about 28 ° C) is supplied
A middle-stage cold heat output area γ 2 (corresponding to a cold heat output area) for outputting cold heat output water (for example, about 13 ° C.) that comes into contact with is provided. The temperature of the heat medium in contact with the lower chamber S3 in the second cold heat output portion γ does not matter, and that portion does not matter in the uncertain region γ3.
And

That is, by a cell moving means (not shown),
The group of the upper chamber S1 circulates the heating region α1 → the upper boost region β1 → the upper heat radiation region γ1 and the group of the middle chamber S2 circulates the middle pressure region α2 → the middle heat radiation region β2 → the middle cold heat output region γ2. In the lower chamber S3, the lower heat radiation area α3 →
It circulates from the lower cold heat output area β3 to the unquestioned area γ3.

The group of the upper chamber S1 is covered with an upper container K1 (corresponding to the first container), and the inside is divided into a heating region α1, an upper pressure rising region β1, and an upper heat radiation region γ1. The group of the middle chamber S2 is covered with the middle container K2, and the inside is divided into a middle pressure rising region α2, a middle heat radiation region β2, and a middle cold heat output region γ2. Further, the group of the lower chamber S3 is covered by the lower container K3, and the inside is the lower heat radiation area α3, the lower cold heat output area β3,
It is divided into an unquestioned area γ3. The middle container K2 and the lower container K3 correspond to the second container. Upper container K1,
The middle container K2 and the lower container K3 are containers K (for example, a resin container) that are continuously connected to each other.
Are provided so as to be divided in the axial direction, as shown in FIG.

(Explanation of Components Other Than Above Above in Heat Pump Cycle 2) Reference numeral 9 shown in FIG. 2 is a booster water circulation passage for circulating booster water in the upper stage boosting region β1 and the middle stage boosting region α2, which is provided on the way. The booster water circulating pump P1 'circulates the booster water. The pressurizing water is a part of the heated water flowing from the upper chamber S1 whose temperature has risen in the heating zone α1 and the water whose temperature has risen due to heat transfer from the upper container K1. The temperature of the boost water in the upper boost region β1 is, for example, about 58 ° C., and the temperature of the boost water in the middle boost region α2 is, for example, about 56 ° C.

(Description of Combustion Device 3) The combustion device 3 of this embodiment uses a gas combustion device that combusts a gas that is a fuel to generate heat, and heats heated water by the generated heat. Gas burner 10 that burns gas, gas supply circuit 11 that includes gas amount control valve 21 that supplies gas to gas burner 10, and gas on-off valve 22, gas burner 10
It is composed of a combustion fan 12 for supplying combustion air, a heat exchanger 13 for exchanging the combustion heat of gas with the heated water, and the like. Then, the heating water is heated to, for example, about 80 ° C. by the heat obtained by the gas combustion of the gas burner 10, and the heated heating water is supplied to the heating region α1 through the heating water circulation passage 14 equipped with the heating water circulation pump P1. To do. The heating water circulation pump P1 of this embodiment is a booster water circulation pump P1 '.
The tandem pump is driven by a dual-purpose motor that drives the. Therefore, when the heated water is supplied from the combustion device 3 to the heat pump cycle 2, the pressurized water is also circulated.

(Explanation of Indoor Air Conditioner 5)
As described above, the indoor heat exchanger 15 is disposed inside the room, and the cold heat output water supplied to the indoor heat exchanger 15 and the indoor air are forcibly heat-exchanged, and the air after the heat exchange is performed. An indoor fan 16 is provided for blowing the air into the room. The indoor heat exchanger 15 is connected to a cold heat output water circulation passage 17 for circulating the cold heat output water supplied from the lower stage cold heat output region β3 and the middle stage cold heat output region γ2, and in the middle of the cold heat output water circulation route 17 (the outdoor unit 7). A cold heat output water pump P2 for circulating the cold heat output water is provided in (inside).

(Explanation of the facility water cooling means 4) The facility water cooling means 4 is an evaporative cooling tower.
The facility water cooled by is supplied to the lower stage heat radiation region α3, the middle stage heat radiation region β2, and the upper stage heat radiation region γ1 by the facility water circulation passage 18 equipped with the facility water circulation pump P3. The facility water cooling means 4 flows the facility water that has passed through the lower heat radiation area α3, the middle heat radiation area β2, and the upper heat radiation area γ1 from the upper side to the lower side, while exchanging heat with the outside air and radiating the heat. During this period, a part of the water is evaporated to remove the heat of vaporization from the facility water flowing at the time of evaporation to cool the facility water flowing. The facility water cooling means 4 is provided with a radiator fan (not shown), and is provided so as to promote evaporation and cooling of the facility water by the air flow generated by the radiator fan. In this embodiment, the evaporation type cooling tower is shown as an example of the facility water cooling means 4, but a closed type air cooling type may be used.

Each heat medium (heating water, boosting water, facility water, cold heat output water) is supplied to each chamber (upper chamber S1, middle chamber S2, lower chamber S3).
), The heat medium is compressed by a pump and jetted from a large number of nozzles N so that the heat medium comes into contact with each chamber. This will be specifically described with reference to FIG.

The injection of heated water will be described. A large number of nozzles N were provided in the heating region α1 of the upper container K1 so that the heated water pumped by the heating water circulation pump P1 was sprayed toward the upper chamber S1 moving in the heating region α1.
The heated water sprayed onto the upper chamber S1 is transmitted in a film form on the surface of the upper chamber S1 and is dropped after heating the upper chamber S1 to about 80 ° C., and is stored in the heating region α1 and circulated through the outlet H. Returned to road 14.

The injection of pressurized water will be described. A large number of nozzles N are provided in the middle-stage pressure rising region α2 of the middle-stage container K2 and the upper-stage pressure rising region β1 of the upper-stage container K1 to move the booster water pumped by the booster water circulation pump P1 'to the middle-stage booster region α2. It is provided so as to be sprayed toward the middle-stage chamber S2 and the upper-stage chamber S1 which moves the upper-stage boosting region β1. Middle room S2
The pressurized water sprayed on the surface of the middle chamber S2 is transferred in a film form and is dropped after heating the middle chamber S2 to about 56 ° C., and is stored in the middle pressure rising region α2 and discharged from the outlet H through the pressurized water circulation path 9 Returned to. The pressurized water sprayed to the upper chamber S1 is transmitted in a film form on the surface of the upper chamber S1 and is dropped after cooling the upper chamber S1 to about 58 ° C., and is accumulated in the upper pressure rising region β1 and is pressurized from the outlet H. It is returned to the water circuit 9.

The injection of facility water will be described. A large number of nozzles N are provided in the lower heat dissipation area α3 of the lower container K3, the middle heat dissipation area β2 of the middle container K2, and the upper heat dissipation area γ1 of the upper container K1, and are pumped by the facility water circulation pump P3. The facility water is provided so as to be sprayed toward the lower chamber S3 moving in the lower heat radiation region α3, the middle chamber S2 moving in the middle heat radiation region β2, and the upper chamber S1 moving in the upper heat radiation region γ1. The facility water sprayed on the lower chamber S3 is
The surface of the lower chamber S3 is transmitted like a film and the lower chamber S3 is heated to 28 ° C.
After radiating heat to a certain extent, it is dripped, stored in the lower radiating area α3, and returned to the radiating water circulation passage 18 from the outlet H. The facility water sprayed onto the middle chamber S2 is transmitted in a film form on the surface of the middle chamber S2 to radiate heat from the middle chamber S2 to about 28 ° C and then dropped, and is stored in the middle heat radiation region β2 and discharged from the outlet H. It is returned to the facility water circulation path 18. The facility water sprayed on the upper chamber S1 is transmitted in a film form on the surface of the upper chamber S1 and drips after radiating the heat to the upper chamber S1 up to about 28 ° C, and is collected in the upper radiation region γ1 and discharged from the outlet H. It is returned to the facility water circulation path 18.

The injection of cold heat output water will be described. Lower stage cold heat output area β3 part of lower stage container K3 and middle stage container K2
A large number of nozzles N are provided in the middle cold heat output area γ2 and the cold heat output water pumped by the cold heat output water pump P2 is
It was provided so as to spray toward the lower chamber S3 which moves the lower cooling heat output region β3 and the middle chamber S2 which moves the middle cooling heat output region γ2. The cold heat output water sprayed to the lower chamber S3 is dropped after being cooled to about 13 ° C. by the endothermic action of the low temperature alloy LM inside when it is transmitted to the surface of the lower chamber S3 in a film shape, and is dropped inside the lower cool output region β3. And is supplied from the outlet H to the cold heat output water circulation path 17. The cold heat output water blown to the middle-stage chamber S2 is transferred to the surface of the middle-stage chamber S2 like a film by the endothermic action of the inner medium temperature alloy MM.
After being cooled to about ℃, it is dripped, stored in the middle stage cold heat output region γ2, and supplied from the outlet H to the cold heat output water circulation path 17.

The heating water circulation passage 14, the cooling heat output water circulation passage 17 and the facility water circulation passage 18 described above are provided with cisterns T1, T2 and T3, respectively, and the water levels in cisterns T1, T2 and T3 are the predetermined water levels. When the pressure drops below, the respective water supply valves T4, T5, T6
Is provided so that tap water supplied from the water supply pipe 19 is replenished into the cisterns T1, T2, T3.
Further, the drain pan P is provided at the bottom of the heat pump cycle 2.
Are arranged so as to drain the drain water generated in the heat pump cycle 2 from the drain pipe 20. The water overflowing from the facility water cooling means 4 is also provided so as to be drained from the drain pipe 20.

In this embodiment, as a means for bringing the heat medium (heating water, booster water, facility water or cold heat output water) into contact with the chamber (upper chamber S1, middle chamber S2 or lower chamber S3), the heat medium is introduced into the chamber. Although an example in which the heat medium is ejected is shown, the heat medium may be dropped and applied to the chamber. Further, the injection and the dropping may be used in combination depending on the required capacity of heat exchange.

(Explanation of Control Device 6) The control device 6 controls the above-mentioned heating in response to an operation instruction from a controller (not shown) provided in the indoor air conditioner 5 or an input signal from each of a plurality of sensors. Water circulation pump P1 (step-up water circulation pump P1 '), cold output water pump P2, facility water circulation pump P
3, water supply valves T4, T5, T6, electric function parts such as a heat dissipation fan of the facility water cooling means 4, and electric function parts of the combustion device 3 (combustion fan 12, gas amount control valve 21, gas on-off valve 22, not shown) It controls the ignition device and the like and gives an instruction to operate the indoor fan 16 to the indoor air conditioner 5.

(Explanation of cooling operation) Cooling device 1 described above
The operation of the cooling operation by the above will be described with reference to the PT refrigeration cycle diagram of FIG. When the cooling operation is instructed by the controller of the indoor air conditioner 5, the control device 6 causes the combustion device 3, the cell moving means, the heat radiation fan and the heated water circulation pump P1 (pressurized water circulation pump P1 '), the cold heat output water pump P2, and the heat radiation. When the water circulation pump P3 operates,
The indoor fan 16 of the indoor air conditioner 5 instructed to cool is turned on.

The plurality of cells S are slowly and continuously rotated by the cell moving means. As a result, the plurality of cells S move in the order of the hydrogen drive unit α → the first cold heat output unit β → the second cold heat output unit γ. In other words, each upper chamber S1 moves in the order of heating region α1 → upper boost region β1 → upper heat radiation region γ1, and each middle chamber S2 moves in the middle pressure region α2 → middle heat radiation region β2 →
The lower-stage heat output area γ2 moves in this order, and each lower chamber S3 moves in the order of the lower-stage heat radiation area α3 → the lower-stage heat output area β3 → the unquestioned area γ3.

As shown in (α) of FIG. 1, in the cell S which moves the hydrogen driving unit α, the upper chamber S1 comes into contact with the heated water (about 80 ° C.) in the heating region α1, and the middle chamber S2 contacts the middle pressure raising region. Touch the boosted water (about 56 ° C) with α2, and the lower chamber S3 is in the lower heat dissipation area α3.
Touch facility water (about 28 ° C). As a result, the upper room S1
80 ° C inside: 1.0 MPa, inside the middle chamber S2 56 ° C:
1.0 MPa, 28 ° C. in the lower chamber S3: 0.9 MPa. At this time, the upper chamber S1 is heated to 80 ° C (Fig. 6)
By cooling the lower chamber S3 to 28 ° C. (see FIG. 6), the high temperature alloy HM in the upper chamber S1 releases hydrogen,
The low temperature alloy LM in the lower chamber S3 occludes hydrogen. Since the medium temperature chamber S2 is heated to the temperature at which the medium temperature alloy MM does not store hydrogen by the pressurized water, the medium temperature alloy MM in the medium chamber S2 does not store hydrogen. Then, the cell S that has passed through the hydrogen driving unit α moves to the first cold heat output unit β thereafter.

As shown in (β) of FIG. 1, the cell S moving in the first cold heat output section β has an upper chamber S1 having an upper pressure rising region β1.
Touch the pressurized water (about 58 ° C), the middle chamber S2 touches the facility water (about 28 ° C) in the middle heat radiation region β2, and the lower chamber S3 touches the cold heat output water in the lower cold heat output region β3. As a result, the temperature in the upper chamber S1 was 58 ° C: 0.5 MPa, and in the middle chamber S2 was 28 MPa.
℃: 0.4MPa, lower chamber S3 is 13 ℃: 0.5MP
a. At this time, since the intermediate chamber S2 is cooled to 28 ° C. and the internal pressure is lowered, the low temperature alloy LM in the lower chamber S3 releases hydrogen (in FIG. 6), and the intermediate temperature alloy MM in the intermediate chamber S2 stores hydrogen ( (In FIG. 6). When the low temperature alloy LM in the lower chamber S3 releases hydrogen, an endothermic action occurs, and heat is taken from the cold output water that comes into contact with the lower chamber S3. As a result, the temperature of the cold heat output water in the lower stage cold heat output region β3 decreases (for example, 13
C). The upper chamber S1 is made of high temperature alloy HM
Is kept at a temperature at which hydrogen does not occlude hydrogen, so the high temperature alloy HM in the upper chamber S1 does not occlude hydrogen. The cell S that has passed through the first cold heat output unit β is then
Move to the cold heat output part γ.

In the cell S moving in the second cold heat output portion γ, as shown in (γ) of FIG. 1, the upper chamber S1 has the upper heat radiation area γ1.
Touch the facility water (about 28 ° C), the middle room S2 touches the cold heat output water in the middle cold heat output area γ2, and the lower room S3 touches the unquestioned area γ3.
Touch the heat medium (water). As a result, the upper chamber S1 has 2
8 ° C: 0.1MPa, 13 ° C in the middle chamber S2: 0.2M
Pa, the inside of the lower chamber S3 is unquestioned. At this time, since the upper chamber S1 is cooled to 28 ° C. and the internal pressure decreases, the medium temperature alloy MM of the middle chamber S2 releases hydrogen (FIG. 6) and the high temperature alloy HM of the upper chamber S1 stores hydrogen ( (In FIG. 6).
When the medium temperature alloy MM in the middle chamber S2 releases hydrogen, an endothermic action occurs, and heat is taken from the cold heat output water touching the middle chamber S2. As a result, the temperature of the cold heat output water in the middle cold heat output region γ2 decreases (for example, 13 ° C). The temperature of the lower chamber S3 is irrelevant, and the low temperature alloy LM in the lower chamber S3 does not absorb hydrogen. And the cell S which passed the 2nd cold heat output part (gamma) moves to the hydrogen drive part (alpha) after that.

The low temperature cold heat output water deprived of heat in the lower stage cold heat output region β3 and the middle stage cold heat output region γ2 of the heat pump cycle 2 is passed through the cold heat output water circulation path 17 to the indoor heat exchanger of the indoor air conditioner 5. The air is supplied to the air conditioner 15 and is heat-exchanged with the air blown into the room to cool the room.

[Effects of the Embodiment] As shown in the above operation, the cooling device 1 of this embodiment has the hydrogen drive unit α and the middle stage chamber S.
2 is pressurized to prevent the medium temperature alloy MM in the middle chamber S2 from absorbing hydrogen. Similarly, the first cold heat output unit β
The upper chamber S1 is pressurized to prevent the high temperature alloy HM in the upper chamber S1 from absorbing hydrogen. As a result, the upper chamber S1, the middle chamber S2, and the lower chamber S3 are only communicated with each other by the hydrogen passage S4, and a two-stage cycle can be configured in one cell S without using an opening / closing valve in the hydrogen passage S4. .

Further, the cell moving means moves the plurality of cells S instead of switching the kind of the heat medium contacting the tube containing the hydrogen storage alloy to exchange heat with the hydrogen storage alloy as in the prior art. As a result, the upper chamber S1, the middle chamber S2, and the lower chamber S3, which store the hydrogen storage alloy, move to change the type of heat medium (heating water, facility water, booster water, cold heat output water). In cycle 2, a switching valve for switching the type of heat medium becomes unnecessary. As described above, the cooling device 1 according to the present embodiment includes the switching valve that frequently switches the heat medium in the heat pump cycle 2,
Since the on-off valve that opens and closes the hydrogen passage S4 is unnecessary,
The failure probability is smaller than in the past, and as a result, long-term reliability can be improved.

The cooling device 1 to which the present invention is applied uses a plurality of cells S in which an upper chamber S1, a middle chamber S2, and a lower chamber S3 containing a hydrogen storage alloy are connected by a hydrogen passage S4.
Compared with shell and tube type heat exchangers, the pressure loss during hydrogen transfer can be kept small, and the heat exchange in the parts that are not involved in heat exchange is small, which reduces heat loss, resulting in cooling efficiency of heat pump cycle 2. The cooling efficiency can be improved.

Since the cooling device 1 to which the present invention is applied obtains the cold heat output by rotationally moving the plurality of cells S in the order of the hydrogen driving part α → the first cold heat output part β → the second cold heat output part γ,
The heat pump cycle 2 can be downsized as compared with the shell and tube type heat exchanger, and as a result, the outdoor unit 7 of the cooling device 1 can be downsized.

The cooling system 1 to which the present invention is applied is
Pressurized water, facility water, cold output water, upper chamber S1, respectively
It is sprayed to the middle chamber S2 and the lower chamber S3. For this reason,
Each heat medium (heating water, booster water, facility water, cold heat output water),
The heat exchange efficiency with each chamber (upper chamber S1, middle chamber S2, lower chamber S3) is improved, and as a result, the cooling efficiency of the heat pump cycle 2 is improved, and the cooling efficiency can be increased. In addition, each heat medium (heating water, booster water, facility water, cold heat output water)
However, the problem of spreading to other areas can be prevented. In other words, for example, it is possible to prevent the problem that the temperature of the cold heat output water rises due to the mixing of the facility water with the cold heat output water.

[Second Embodiment] Next, a second embodiment in which the hydrogen storage cooling device of the present invention is applied to an air conditioner will be described. Note that FIG. 7 is a schematic configuration diagram of a cooling and heating device to which the present invention is applied. In addition to performing the cooling operation described in the first embodiment, the cooling and heating device 30 of the present embodiment adds the heating water heated by the combustion device 3 to the indoor heat exchanger 1 of the indoor air conditioner 5 during the heating operation.
5 to perform indoor heating by connecting the heating water circulation passage 14 and the cooling heat output water circulation passage 17 shown in the first embodiment,
Three switching valves V1 and V for switching the flow path at the connecting part
2, V3 (Cooling and heating switching valve) is provided. In addition to the indoor air conditioner 5, a floor heating mat, a bathroom dryer, or the like may be connected so that floor heating or bathroom drying is performed by supplying heated water.

[Modification] In the first and second embodiments described above,
In order to facilitate the explanation, the upper chamber S is shown according to the top and bottom of the drawing.
1, an example in which the middle chamber S2 and the lower chamber S3 are shown has been shown, but the rotation direction of the cell S may be arranged in other directions such as to be laterally or inverted. In addition, upper chamber S1, middle chamber S2,
The lower chamber S3 may be rearranged. Furthermore, cell S
The moving direction of may be reversed. In such a case, as a matter of course, the arrangement positions of the heat mediums in contact with the respective chambers are also changed so that the heat pump cycle is established.

In the above embodiment, the present invention is applied to a two-stage cycle in which the first chamber is divided into two (middle chamber S2 and lower chamber S3) to obtain the cold heat output twice within one cycle. Although shown, the present invention is applicable to a one-stage cycle for obtaining a cold heat output once in one cycle, or a three-stage cycle for obtaining a cold heat output three times or more in one cycle by dividing the first chamber into three or more. May be applied.

In the above embodiment, as the heat medium for pressurization, an example is used in which the heat medium (the pressurized water in the embodiment) whose temperature has risen by cooling the upper chamber S1 whose temperature has risen in the heating zone α1 is used. However, a heat medium heated by heating means (for example, temperature rising by a combustion device, temperature rising by an electric heater, temperature rising by exhaust heat, etc.) may be used.

In the above embodiment, a multi air conditioner in which a plurality of indoor air conditioners 5 can be connected to one outdoor unit 7 has been shown, but in an air conditioner in which one indoor air conditioner 5 is connected to one outdoor unit 7. The present invention may be applied. In the above-described embodiment, an example in which the room is cooled by the heat medium for cold heat output (cold water in the embodiment) obtained by the heat pump cycle 2 has been shown, but refrigeration operation or freezing operation is performed by the heat medium for cold heat output. For example, the present invention may be used as another cooling device.

In the above embodiment, an example using one heat pump unit (unit containing a plurality of cells S in one container K) was shown, but a plurality of heat pump units are mounted to increase the cooling capacity. Therefore, it may be used for a cooling device such as a building air conditioning system that requires a large cooling capacity.

In the above-mentioned embodiment, the gas combustion device for burning the gas is used as the heating means for heating the heating medium for heating (heating water in the embodiments). Other combustion devices may be used, heating means for heating the heating medium by exhaust heat of the internal combustion engine, steam by a boiler, heating means using an electric heater, etc.
Other heating means may be used. When utilizing the exhaust heat of the internal combustion engine, it can also be used for a vehicle.

In the above embodiments, tap water was used as an example of each heat medium, but a heat medium of another liquid such as antifreeze liquid or oil, or a heat medium of gas such as air may be used. In the above embodiment, an example in which a plurality of cells S are continuously rotated by the cell moving means is shown, but the cells S are intermittently rotationally moved, linear movements such as vertical and horizontal movements, and meandering movements are performed. You may move so as to accompany.

[Brief description of drawings]

FIG. 1 is an operation explanatory view of a heat pump cycle (first embodiment).

FIG. 2 is a schematic configuration diagram of a cooling device (first embodiment).

FIG. 3 is a perspective view of a cell (first embodiment).

FIG. 4 is a perspective view showing an arrangement state of a plurality of cells (first embodiment).

FIG. 5 is a perspective view of a container (first embodiment).

FIG. 6 is a PT refrigeration cycle diagram (first embodiment).

FIG. 7 is a schematic configuration diagram of an air conditioner (second embodiment).

FIG. 8 is a schematic configuration diagram of a cooling device (conventional example).

[Explanation of symbols]

HM high temperature alloy (hydrogen storage alloy) MM Medium temperature alloy (hydrogen storage alloy) LM low temperature alloy (hydrogen storage alloy) S cell S1 upper room (first room) S2 Middle room (2nd room) S3 Lower room (2nd room) S4 hydrogen passage α Hydrogen drive α1 heating area α3 Lower heat radiation area (first heat radiation area) γ Second cold heat output section (Cold heat output section) γ1 Upper heat radiation area (second heat radiation area) γ2 Middle cold heat output area (Cold heat output area) K1 upper container (first container) K2 Middle container (2nd container) K3 lower container (second container)

Claims (4)

(57) [Claims] 1. A hydrogen storage-type cooling device that utilizes the heat absorption of hydrogen storage alloy when hydrogen is released, wherein a first chamber in which the hydrogen storage alloy is enclosed, and the first chamber communicates with the first chamber through a hydrogen passage. A plurality of cells having a second chamber in which an occlusion alloy is enclosed, a heating region in which a heating medium for heating, which is provided so as to be in contact with the first chamber, is arranged, and can be in contact with the second chamber A hydrogen drive unit having a first heat dissipation area in which a heat dissipation heat medium is disposed, and a second heat dissipation area in which a heat dissipation heat medium disposed so as to be in contact with the first chamber is disposed. At the same time, a cold heat output part having a cold heat output region in which a heat medium for cold heat output is provided so as to be in contact with the second chamber, and the plurality of cells are repeatedly moved to the hydrogen drive part and the cold heat output part. And a cell moving means for making the heating medium for heating, At least one kind of heat medium for radiating heat and at least one heat medium for outputting cold heat is injected or dropped into at least one of the first chamber and the second chamber. Cooling device. 2. The hydrogen storage cooling device according to claim 1, wherein the first chamber and the second chamber each have a flat shape, and one surface thereof is convexly curved and faces one surface thereof. A hydrogen storage cooling device, characterized in that the other surface is provided with a concave curvature. 3. The hydrogen storage cooling device according to claim 1 or 2, wherein the plurality of cells are arranged so that the first chamber and the second chamber each have a radial shape. A plurality of cells are rotationally driven in a radial manner, the heating area and the second heat radiation area are partitioned in a first container that covers the group of the first chamber, and the first heat radiation area and the cold heat output area are A hydrogen storage cooling device characterized by being partitioned in a second container that covers a group of the second chamber. 4. The hydrogen storage cooling device according to any one of claims 1 to 3, wherein the plurality of cells are provided by dividing the second chamber into two and are divided from the first chamber. The hydrogen is transferred to one of the second chambers, the hydrogen is transferred from the one of the second chambers to the other of the second chambers to obtain the cold heat output of the first stage, and the second chamber of the other side is connected to the second chamber. A hydrogen storage cooling device, which is provided so as to move hydrogen to one chamber to obtain a second stage cold heat output.