JP2000018765A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To utilize a radiated heat from a compressor or the like except for defrosting at the time of heating. SOLUTION: At the time of cooling, a radiated heat from a compressor 1 is supplied to a high temperature side second hydrogen storage alloy 11b via high temperature heating medium piping 13 to drive a cold heat generating system 21. Thus, a cold heat generated at a low temperature side first hydrogen storage alloy 11a is supplied to an outdoor heat exchanger 3 via low temperature heating medium piping 15 to supplement a radiation of the exchanger 3. At the time of heating, the radiated heat from the compressor 1 is supplied directly to the exchanger 3 via bypass pipings 19a, 19b for short-circuiting the system 21, thereby supplementing heat absorption of the exchanger 3, thereby suppressing occurrence of a frost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for utilizing exhaust heat for utilizing heat dissipated from an air conditioner, particularly a compressor, for cooling and heating using a hydrogen storage alloy.

[0002]

2. Description of the Related Art A conventional air conditioner of this type is disclosed, for example, in Japanese Patent Laid-Open Publication No. Hei 1-306785. A conventional exhaust heat utilization technology will be described below with reference to FIG.

In FIG. 7, 1 is a compressor, 2 is a four-way valve,
3 is an outdoor heat exchanger, 4 is an expansion valve, 5 is an indoor heat exchanger,
These constitute a heat pump system. 6
Is an auxiliary heat exchanger for recovering the heat dissipated from the compressor 1. The bypass outgoing pipe 7 a and the bypass returning pipe 7 b are connected. The bypass outgoing pipe 7 a is connected between the expansion valve 4 and the indoor heat exchanger 5 by a bypass. The return pipe 7b is connected between the outdoor heat exchanger 3 and the expansion valve 4, respectively. An opening / closing valve 8 and a capillary tube 9 are provided on the bypass forward pipe 7a, and a check valve 10 is provided on the bypass return pipe 7b.

[0004] The operation of the air conditioner configured as described above will be described. First, during the heating operation, the high-temperature and high-pressure refrigerant compressed by the compressor 1 is sent to the indoor heat exchanger 5 through the four-way valve 2 to heat the room and radiate heat. The refrigerant is reduced in pressure and becomes low-temperature low-pressure refrigerant, sent to the outdoor heat exchanger 3, absorbs heat from the outside air, and returns to the compressor 1 via the four-way valve 2. Since frost adheres to the outdoor heat exchanger 3 into which the low-temperature and low-pressure refrigerant flows,
Periodic defrosting is required.

At the time of this defrosting, the on-off valve 8 is opened, and the refrigerant radiated by heating the room with the indoor heat exchanger 5 is diverted and guided to the bypass forward pipe 7 a, and the pressure is reduced by the capillary tube 9. After that, it flows into the auxiliary heat exchanger 6 and is heated by the heat dissipated by the compressor 1, is guided to the outdoor heat exchanger 3 through the bypass return pipe 7 b, melts frost, and defrosts.

Next, during the cooling operation, the high-temperature and high-pressure refrigerant compressed by the compressor 1 is sent to the outdoor heat exchanger 3 through the four-way valve 2 and radiates heat to the outside air. Then, the refrigerant is sent to the indoor heat exchanger 5 as low-temperature and low-pressure refrigerant. The refrigerant absorbs heat from the room to perform cooling, and returns to the compressor 1 via the four-way valve 2.

At this time, a check valve 10 is connected to the bypass return pipe 7b.
Is provided to prevent the refrigerant passing through the outdoor heat exchanger 3 from being diverted and flowing to the bypass return pipe 7b.

[0008]

In a conventional air conditioner, during a heating operation, a high-temperature and high-pressure refrigerant discharged from a compressor 1 is supplied to an indoor heat exchanger 5 to heat and generate. When the defrosting operation is performed to remove frost, a part of the refrigerant supplied to the indoor heat exchanger 5 is diverted to the auxiliary heat exchanger 6 to store heat, and the stored refrigerant is supplied to the outdoor heat exchanger 3. Had been defrosted.

Therefore, the heat dissipated from the compressor 1 is used only for a very limited time for the specific purpose of defrosting during the heating operation, and is used for normal heating operation and cooling operation. However, there is a problem that it is not efficiently dissipated and is extremely inefficient.

An object of the present invention is to provide an air conditioner that can utilize heat dissipated from a compressor not only for defrosting during a heating operation but at least for a cooling operation. And

[0011]

In order to solve the above problems and achieve the object of the present invention, the present invention relates to a heat pump system having a compressor, an outdoor heat exchanger, an indoor heat exchanger, and the like. A cold heat generating system having a hydrogen storage alloy for releasing and storing hydrogen on a high temperature side and a low temperature side; a passage for guiding heat dissipated by the compressor or the outdoor heat exchanger; In this case, a bypass passage for short-circuiting the cooling / heating system is provided between these passages.

[0012] When performing the cooling operation, the heat generated by supplying the heat dissipated from the compressor to the cold heat generation system is supplied to the outdoor heat exchanger to assist the heat radiation in the outdoor heat exchanger. it can. In addition, when the bypass passage is provided, even during the heating operation, the heat dissipated by the compressor is directly supplied to the outdoor heat exchanger via the bypass passage to assist heat absorption in the outdoor heat exchanger. At the same time, the occurrence of frost can be suppressed, and the defrosting process can be made unnecessary.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be embodied by the constitutions described in the respective claims. Hereinafter, embodiments of the present invention will be described together with operational effects.

The air conditioner of the present invention comprises a heat pump system having a compressor, an outdoor heat exchanger, an indoor heat exchanger, etc., and a cold heat generating system having a hydrogen storage alloy for releasing and storing hydrogen on a high temperature side and a low temperature side. And a passage for guiding the heat dissipated by the compressor or the outdoor heat exchanger to the cold heat generation system, and a passage for guiding the cold heat from the cold heat generation system to the outdoor heat exchanger.

When performing the cooling operation, the heat dissipated in the outdoor heat exchanger is supplied by supplying the heat dissipated from the compressor to the cold heat generation system to generate the cold heat and supplying the cold heat to the outdoor heat exchanger. Can be assisted.

A heat pump system having a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger;
A cold heat generation system having two pairs of a high-temperature-side hydrogen storage alloy and a low-temperature-side hydrogen storage alloy that absorb and release hydrogen, an auxiliary heat exchanger that recovers the heat dissipated by the compressor, and the auxiliary heat exchanger Generated by a high-temperature heat medium pipe that guides the dissipated heat to one pair of high-temperature hydrogen storage alloys, a high-temperature pump that transports a high-temperature heat medium to this high-temperature heat medium pipe, and a low-temperature hydrogen storage alloy of the other pair. A low-temperature heat medium pipe that guides cold heat to the outdoor heat exchanger; a low-temperature side pump that conveys a low-temperature heat medium to the low-temperature heat medium pipe; a high-temperature side switching valve provided in the middle of the high-temperature heat medium pipe; A low-temperature side switching valve provided in the middle of the heat medium pipe,
A bypass pipe for short-circuit connecting the low-temperature heating medium pipe to the high-temperature heating medium pipe via the high-temperature side switching valve and the low-temperature side switching valve is provided.

During the cooling operation, the heat dissipated by the compressor recovered by the auxiliary heat exchanger is supplied to one pair of the high-temperature-side hydrogen storage alloys through the high-temperature heat medium pipe by the high-temperature side pump, so that the cooling heat generation system is operated. As a heat source, the cold heat obtained from the other pair of low-temperature side hydrogen storage alloy is supplied to the outdoor heat exchanger through the low-temperature heat medium pipe by the low-temperature side pump, so that heat radiation in the outdoor heat exchanger can be assisted. . In the heating operation, the high-temperature side switching valve and the low-temperature side switching valve are switched, and the heat dissipated by the compressor is supplied from the high-temperature heat medium pipe to the outdoor heat exchanger through the low-temperature heat medium pipe through the bypass pipe. Heat absorption in the outdoor heat exchanger can be assisted, and since the heat dissipated from the compressor is always supplied to the outdoor heat exchanger, the generation of frost is suppressed and the defrosting process is not required. Can be.

A heat pump system having a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger;
A cold heat generation system having two pairs of a high-temperature side hydrogen storage alloy and a low-temperature side hydrogen storage alloy for storing and releasing hydrogen, a discharge pipe connected to the discharge side of the compressor, and recovering heat dissipated from the discharge pipe. An auxiliary heat exchanger, a high-temperature heat medium pipe that guides the dissipated heat recovered by the auxiliary heat exchanger to one pair of high-temperature hydrogen storage alloys, and a high-temperature side that conveys a high-temperature heat medium to the high-temperature heat medium pipe. A pump, a low-temperature heat medium pipe that guides cold generated by the other pair of low-temperature hydrogen storage alloys to the outdoor heat exchanger, a low-temperature pump that conveys a low-temperature heat medium to the low-temperature heat medium pipe, and the high-temperature heat pipe. A high-temperature switching valve provided in the middle of the medium pipe, a low-temperature switching valve provided in the middle of the low-temperature heating medium pipe, and the high-temperature heating medium via the high-temperature switching valve and the low-temperature switching valve. A bypass pipe that short-circuits the low-temperature heat medium pipe to the pipe is provided. Than it is.

During the cooling operation, the heat dissipated from the discharge pipe recovered by the auxiliary heat exchanger is supplied to one pair of the high-temperature side hydrogen storage alloys through the high-temperature heat medium pipe by the high-temperature side pump to supply heat to the heat generation system of the cold heat generation system. By supplying the cold heat obtained by the other pair of low-temperature side hydrogen storage alloys to the outdoor heat exchanger through the low-temperature heat medium pipe by the low-temperature side pump, heat radiation in the outdoor heat exchanger can be assisted.

During the heating operation, the high-temperature side switching valve and the low-temperature side switching valve are switched, and the heat radiated from the discharge pipe is supplied from the high-temperature heat medium pipe to the outdoor heat exchanger through the low-temperature heat medium pipe via the bypass pipe. As a result, heat absorption in the outdoor heat exchanger can be assisted, and since the heat dissipated from the discharge pipe is always supplied to the outdoor heat exchanger, the generation of frost is suppressed, eliminating the need for a defrosting operation. Can be Since the discharge pipe has a simpler structure than the compressor, the structure of the auxiliary heat exchanger for recovering the heat dissipated from the discharge pipe can also be simplified.

A heat pump system having a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger;
A cold heat generation system having two pairs of a high-temperature-side hydrogen storage alloy and a low-temperature-side hydrogen storage alloy for storing and releasing hydrogen, a liquid pipe section provided in an outdoor heat exchanger, and heat dissipated by the liquid pipe section. A high-temperature heat medium pipe leading to the pair of high-temperature hydrogen storage alloys, a high-temperature pump that conveys a high-temperature heat medium to the high-temperature heat medium pipes, and outdoor heat exchange of cold generated by the other pair of low-temperature hydrogen storage alloys A low-temperature heat medium pipe leading to a vessel, and a low-temperature side pump for conveying a low-temperature heat medium to the low-temperature heat medium pipe.

During the cooling operation, the heat dissipated in the liquid pipe portion of the outdoor heat exchanger is supplied to one pair of the high-temperature side hydrogen storage alloys through the high-temperature heat medium pipe by the high-temperature side pump to serve as a heat source of the cold heat generation system. By supplying the cold heat obtained by the other pair of low-temperature side hydrogen storage alloys to the outdoor heat exchanger through the low-temperature heat medium pipe by the low-temperature pump, heat radiation in the outdoor heat exchanger can be assisted. In addition, since the heat radiation of the liquid pipe portion in the outdoor heat exchanger is sufficiently performed, a large amount of supercooling can be obtained, and the cooling capacity can be improved.

Further, a compressor, a four-way valve, an outdoor heat exchanger,
A heat pump system having an expansion valve and an indoor heat exchanger, a cold heat generation system having two pairs of a high-temperature side hydrogen storage alloy and a low-temperature side hydrogen storage alloy for storing and releasing hydrogen, and a discharge side of the compressor. Discharge pipe, a branch outgoing pipe for guiding the high-temperature heat medium in the discharge pipe to one pair of high-temperature side hydrogen storage alloy, an on-off valve provided in the branch outgoing pipe, and the high-temperature side hydrogen storage alloy. A branch return pipe for returning a high-temperature heat medium to the discharge pipe, a check valve provided in the branch return pipe, and a low temperature for guiding cold generated by the other pair of low-temperature side hydrogen storage alloys to the outdoor heat exchanger. It is provided with a heat medium pipe and a low temperature side pump for conveying a low temperature heat medium to the low temperature heat medium pipe.

During the cooling operation, the high-temperature heat medium in the discharge pipe is supplied to the high-temperature hydrogen-absorbing alloy through the branch outgoing pipe to serve as a heat source for the cold-heat generating system. Is supplied to the outdoor heat exchanger through the low-temperature heat medium pipe by the low-temperature side pump, so that heat radiation in the outdoor heat exchanger can be assisted. In addition, since the high-temperature heat medium in the discharge pipe is branched and used as a heat source of the cold heat generation system, an auxiliary heat exchanger can be eliminated.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air conditioner according to the present invention will be described below with reference to FIGS. In addition, about the structure same as the structure demonstrated as a prior art,
The same reference numerals are given and the detailed description is omitted.

(Embodiment 1) FIG. 1 is a system diagram of an air conditioner in Embodiment 1 of the present invention, FIG. 2 is a basic diagram of a cold heat generation system in the air conditioner, and FIG. Figure 7 shows an application diagram of the system.

In FIG. 1, 11a is a high-temperature side first hydrogen storage alloy, 11b is a high-temperature side second hydrogen storage alloy, 12a is a low-temperature side first hydrogen storage alloy, 12b is a low-temperature side second hydrogen storage alloy, and 13 is an auxiliary. Heat exchanger 6 and high temperature side second hydrogen storage alloy 1
A high-temperature heat medium pipe for circulating a heat medium between the second hydrogen storage alloy 11b and the high-temperature side second hydrogen storage alloy 11b. Reference numeral 14 denotes a high-temperature side pump provided in the high-temperature heat medium pipe 13, and conveys the high-temperature heat medium from the auxiliary heat exchanger 6 → the high-temperature side second hydrogen storage alloy 11 b → the auxiliary heat exchanger 6. Reference numeral 15 denotes a low-temperature heat medium pipe that circulates a heat medium between the outdoor heat exchanger 3 and the low-temperature first hydrogen storage alloy 12a. Leading. Reference numeral 16 denotes a low-temperature side pump provided in the low-temperature heat medium pipe 15,
The low-temperature heat medium is transported from the low-temperature side first hydrogen storage alloy 12a to the outdoor heat exchanger 3 and then to the low-temperature side first hydrogen storage alloy 12a.
Reference numerals 17a and 17b denote high-temperature side switching valves, which are in the middle of the high-temperature heat medium pipe 13, that is, the high-temperature side switching valve 17a is on the inflow side to the high-temperature side second hydrogen storage alloy 11b, and the high-temperature side switching valve 17b is high-temperature side second hydrogen. It is provided on the outflow side from the storage alloy 11b. Reference numerals 18a and 18b denote low-temperature switching valves,
5, the low-temperature side switching valve 18a is on the inflow side to the outdoor heat exchanger 3, and the low-temperature side switching valve 18b is
It is provided on the outflow side. Reference numerals 19a and 19b denote bypass pipes, which are a high-temperature side switching valve 17a and a low-temperature side switching valve 18a.
The high-temperature side switching valve 17b and the low-temperature side switching valve 18b are connected respectively. Reference numeral 20 denotes a heat pump system, which includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, and an expansion valve 4.
And the indoor heat exchanger 5 are connected. Reference numeral 21 denotes a cold heat generation system which connects the high-temperature side first hydrogen storage alloy 11a and the low-temperature side first hydrogen storage alloy 12a, and connects the high-temperature side second hydrogen storage alloy 11b and the low-temperature side second hydrogen storage alloy 12b. It is configured by combining a pair of a high-temperature side hydrogen storage alloy and a low-temperature side hydrogen storage alloy. The high-temperature-side first hydrogen storage alloy 11a and the low-temperature-side second hydrogen storage alloy 12b release heat to the outside.

2 and 3, reference numeral 22 denotes a container for storing the high-temperature side first hydrogen storage alloy 11a, 23 denotes a container for storing the high-temperature side second hydrogen storage alloy 11b, and 24 denotes a low-temperature side first hydrogen storage alloy 12a. , A container 25 for storing the low-temperature-side second hydrogen storage alloy 12b, 22a and 23
Reference numerals a, 24a, and 25a denote heat medium passages provided in the containers 22, 23, 24, and 25, respectively, and reference numeral 26 denotes a first hydrogen tube, and the container 22 that stores the high-temperature first hydrogen storage alloy 11a and the low-temperature first hydrogen. It communicates with a container 24 that stores the storage alloy 12a. Reference numeral 27 denotes a second hydrogen pipe, which connects a container 23 for storing the high-temperature side second hydrogen storage alloy 11b and a container 25 for storing the low-temperature side second hydrogen storage alloy 12b. Reference numeral 28 denotes a first on-off valve, which is provided in the middle of the first hydrogen pipe 26.
Reference numeral 29 denotes a second on-off valve, which is provided in the middle of the second hydrogen pipe 27. 30 is a high-temperature heat source, 31 is a first cooler at room temperature,
Reference numerals 32 and 33 denote high-temperature side pumps, and reference numerals 34, 35, 36 and 37 denote high-temperature side four-way valves, each of which connects the heat source 30 and the first cooler 31 to the container 22 for storing the high-temperature side first hydrogen storage alloy 11a or the high-temperature side second It can be selectively connected to a container 23 that stores the hydrogen storage alloy 11b. 38 is a low-temperature cold-heat generator, 39 is a normal-temperature second cooler, 40 and 41 are low-temperature side pumps, 42, 43, 44 and 45 are low-temperature side four-way valves, and the cold-heat generator 38 and the second cooler 39 are provided. , The container 24 for storing the low-temperature side first hydrogen storage alloy 12a or the low-temperature side second hydrogen storage alloy 12a.
It can be selectively connected to a container 25 for storing the hydrogen storage alloy 12b.

The operation of the air conditioner and the cold heat generation system configured as described above will be described below.

First, the operation of the air conditioner will be described with reference to FIG. At the time of cooling operation, the high-temperature side pump 14 is operated, and the heat dissipated by the compressor 1 recovered by the auxiliary heat exchanger 6 is supplied to the high-temperature side second hydrogen storage alloy 11b through the high-temperature heat medium pipe 13. The regenerative process of moving hydrogen to the low-temperature side second hydrogen storage alloy 12b via the 2-hydrogen pipe 27 is operated to drive the cold heat generation system 21. At this time, the low-temperature side second hydrogen storage alloy 12b generates heat to store hydrogen, and the heat is radiated to the outside.

Then, when the cold heat generation system 21 is driven, the first hydrogen tube 26 is transferred from the low temperature side first hydrogen storage alloy 12a.
A cold heat generation process of moving hydrogen to the high-temperature first hydrogen storage alloy 11a through the first heat storage alloy operates, and the low-temperature first hydrogen storage alloy 1
The cold generated when the 2a releases hydrogen is supplied to the outdoor heat exchanger 3 through the low-temperature heat medium pipe 15 by operating the low-temperature pump 16, so that the heat of the outdoor heat exchanger 3 is assisted. Can be.

As described above, the operation of the cold heat generation system 21 includes the regeneration process and the cold heat generation process. The heat generated when the hydrogen storage alloy absorbs hydrogen radiates heat to the outside, and the hydrogen storage alloy releases hydrogen. In order to drive the cold heat generation system 21, a heat source for operating the regeneration process is required, and the heat source uses the heat dissipated from the compressor 1 as a heat source. The heat source 30 in FIGS. 2 and 3 is used.

During the heating operation, the high-temperature side pump 14 is operated, and the high-temperature side switching valves 17a and 17b and the low-temperature side switching valves 18a and 18b are switched to short-circuit the cold heat generation system 21 to cause the compressor 1 to perform a heating operation. Since the heat dissipated is supplied from the high-temperature heat medium pipe 13 to the outdoor heat exchanger 3 via the bypass pipes 19a and 19b and circulated, the heat absorption of the outdoor heat exchanger 3 can be assisted. The generation of frost can be suppressed.

Next, the operation of the cold heat generation system 21 will be described with reference to FIG. The first of the cold heat generation system
In the cooling process, the first on-off valve 28 is opened and the first hydrogen pipe 2
6, hydrogen is transferred from the container 24 containing the low-temperature-side first hydrogen storage alloy 12a to the container 22 containing the high-temperature-side first hydrogen storage alloy 11a.
A cold is generated in the container 24 accommodating a. The cold generated here is supplied to the heat medium passage 24a and the low-temperature four-way valve 42 by the heat medium sent out by the low-temperature pump 40.
It is supplied to the cold heat generator 38 via 43 and 44 and then to the outdoor heat exchanger 3.

On the other hand, by absorbing hydrogen, the heat generated in the container 22 accommodating the high-temperature side first hydrogen storage alloy 11a is generated by the heat medium delivered by the high-temperature side pump 32 and the heat medium passage 22a and the high-temperature side. Four-way valve 34, 3
The heat is guided to the first cooler 31 via the heat exchangers 5 and 36 to be radiated.

The heat of the heat source 30, that is, the heat dissipated by the compressor 1 is supplied to the high-temperature side four-way valves 35, 36, 37 and the heat medium passage 2 by the heat medium delivered by the high-temperature side pump 33.
It is supplied to the container 23 containing the high-temperature-side second hydrogen storage alloy 11b via 3a. Due to this heat, the second on-off valve 2
When 9 is opened, hydrogen moves through the second hydrogen pipe 27 from the container 23 storing the high-temperature side second hydrogen storage alloy 11b to the container 25 storing the low-temperature side second hydrogen storage alloy 12b.

On the other hand, the heat generated in the container 25 accommodating the low-temperature side second hydrogen storage alloy 12b due to the storage of hydrogen is generated by the heat medium delivered by the low-temperature side pump 41 and the heat medium passage 25a and the low-temperature side. Four-way valve 43, 4
The heat is guided to the second cooler 39 via 4 and 45 and is radiated.

Next, in the sensible heat recovery process after the completion of the first cooling process in the cold heat generation system, the high-temperature side four-way valves 34, 35, 36, and 37 are switched to connect the heat medium passage 22a and the heat medium passage 23a. And the heat medium sent out by the high temperature side pump 32 causes the high temperature side first
The container 22 containing the hydrogen storage alloy 11a and the container 23 containing the high temperature side second hydrogen storage alloy 11b are set to almost the same temperature, and the sensible heat on the high temperature side is recovered.

On the other hand, the low temperature side four-way valves 42, 43, 44, 4
5, the heat medium passage 24a and the heat medium passage 25a are connected to each other, and the heat medium sent out by the low temperature side pump 41 causes the container 24 accommodating the low temperature side first hydrogen storage alloy 12a and the low temperature side second hydrogen storage alloy 12a. The temperature of the container 25 that stores the hydrogen storage alloy 12b is set to be substantially the same temperature, and the sensible heat on the low temperature side is recovered.

In the second cooling process after the sensible heat recovery process in the cold heat generation system is completed, the high-temperature side four-way valves 34, 3
By switching between 5, 36 and 37, the heat of the heat source 30 is heated by the heat medium sent out by the high-temperature side pump 33 and the container 22 for storing the high-temperature side first hydrogen storage alloy 11a.
To transfer hydrogen to the container 24 that stores the low-temperature-side first hydrogen storage alloy 12a.

The heat generated in the container 24 for storing the low-temperature side first hydrogen storage alloy 12a by storing hydrogen is changed by the low-temperature side pumps 42, 43, 44, and 45, and the heat is generated by the low-temperature side pump 41. The heat medium is sent to the second cooler 39 to radiate heat.

On the other hand, hydrogen is transferred from the container 25 containing the low-temperature-side second hydrogen storage alloy 12b to the container 23 containing the high-temperature-side second hydrogen storage alloy 11b, and the hydrogen is released to release the hydrogen. Cold heat generated in the container 25 containing the hydrogen storage alloy 12b is supplied to the cold heat generator 38 by the heat medium sent out by the low temperature side pump 40 through the heat medium passage 25a and the low temperature side four-way valves 42, 43, 44. Then, it is supplied to the outdoor heat exchanger 3.

The heat generated in the container 23 containing the high-temperature side second hydrogen storage alloy 11b due to the storage of hydrogen is transferred to the heat medium passage 23a and the high-temperature side four-way valve by the heat medium delivered by the high-temperature side pump 32. 34, 35,
The heat is guided to the first cooler 31 through 36 and is radiated.

Further, the cold heat generation system described above
A heat source 30, a high temperature side pump 33, a cold heat generator 38,
It is also possible to remove the low-temperature side pump 40 and provide a system in which the high-temperature side pump 14 and the low-temperature side pump 16 have the function (see FIG. 3).

As described above, in the air conditioner of the present embodiment, during the cooling operation, the cold heat obtained from the cold heat generating system 21 is exchanged for outdoor heat by the low-temperature pump 16 via the low-temperature heat medium pipe 15. By supplying the heat to the heat exchanger 3, the heat radiation of the outdoor heat exchanger 3 is assisted, so that the power consumption of the compressor 1 is reduced, the cooling efficiency is improved, and the outside air generated on a hot summer day etc. It is possible to prevent a decrease in cooling performance due to a rise in temperature.

During the heating operation, the high temperature side switching valve 17
a, 17b and the low-temperature side switching valves 18a, 18b are switched to supply the heat dissipated from the compressor 1 directly from the high-temperature heat medium pipe 13 to the outdoor heat exchanger 3 through the bypass pipes 19a, 19b. Since the heat absorption of 3 is assisted, it is possible to prevent a decrease in the heating performance due to a decrease in the outside air temperature that occurs on a cold winter day or the like.

Further, during the heating operation, since the heat dissipated from the compressor 1 is always supplied to the outdoor heat exchanger 3, the generation of frost in the outdoor heat exchanger 3 is suppressed, and the defrosting operation becomes unnecessary. Can be.

Embodiment 2 FIG. 4 is a system diagram of an air conditioner according to Embodiment 2 of the present invention. Example 1
As a configuration different from the above case, an auxiliary heat exchanger for recovering heat dissipated from the compressor is provided on the discharge side of the compressor. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

In FIG. 4, reference numeral 46 denotes a discharge pipe,
Is connected to the discharge side of Reference numeral 47 denotes an auxiliary heat exchanger that collects heat dissipated from the discharge pipe 46. The high-temperature heat medium pipe 13 transfers the heat radiated from the discharge pipe 46 to the cold heat generation system 21.
To lead to. Further, the low-temperature heat medium pipe 15 guides cold generated by the cold heat generation system 21 to the outdoor heat exchanger 3.

The operation of the air conditioner configured as described above will be described below. First, during cooling operation,
The high-temperature side pump 14 is operated, and the heat dissipated from the discharge pipe 46 collected by the auxiliary heat exchanger 47 flows into the high-temperature side second hydrogen storage alloy 11b through the high-temperature heat medium pipe 13 and is supplied to the cold heat generation system 21. Thereby, the heat source of the cold heat generation system 21 is used.

On the other hand, the cold generated by the cold generating system 21 operates the low-temperature side pump 16 and
Is supplied to and circulated to the outdoor heat exchanger 3, so that the heat radiation of the outdoor heat exchanger 3 can be assisted.

Next, during the heating operation, the high-pressure side pump 14 is operated, and the high-temperature side switching valves 17a and 17b and the low-temperature side switching valves 18a and 18b are switched to thereby discharge the discharge pipe 4.
From the high-temperature heat medium pipe 13 to the bypass pipe 1
Since the heat is supplied to the outdoor heat exchanger 3 through 9a and 19b, the heat absorption of the outdoor heat exchanger 3 can be assisted.

As described above, in the air conditioner of the present embodiment, during the cooling operation, the cold heat obtained from the cold heat generation system 21 is supplied to the low-temperature heat medium pipe 1 by the low-temperature pump 16.
5, the heat is supplied to the outdoor heat exchanger 3 to assist the heat radiation of the outdoor heat exchanger 3, so that the power consumption of the compressor 1 is reduced, the cooling efficiency is improved, and the hot summer day Thus, it is possible to prevent a decrease in cooling performance due to an increase in the outside air temperature occurring in the air conditioner.

During the heating operation, the high temperature side switching valve 17
a, 17b and the low-temperature side switching valves 18a, 18b are switched to supply and circulate the heat radiated from the discharge pipe 46 from the high-temperature heat medium pipe 13 to the outdoor heat exchanger 3 through the bypass pipes 19a, 19b. Since the heat absorption of 3 is assisted, it is possible to prevent a decrease in the heating performance due to a decrease in the outside air temperature that occurs on a cold winter day or the like.

Further, during the heating operation, since the heat dissipated from the discharge pipe 46 is always supplied to the outdoor heat exchanger 3, the generation of frost in the outdoor heat exchanger 3 is suppressed, and the defrosting operation becomes unnecessary. Can be.

Further, since the discharge pipe 46 has a simple structure, the structure of the auxiliary heat exchanger 47 for recovering the heat dissipated from the discharge pipe 46 can also be simplified.

(Embodiment 3) FIG. 5 is a system diagram of an air conditioner according to Embodiment 3 of the present invention. Example 1
As a configuration different from the case of (1), a liquid pipe section is provided in the outdoor heat exchanger. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

In FIG. 5, reference numeral 48 denotes a liquid pipe of the outdoor heat exchanger 3. The high-temperature heat medium pipe 13 guides the heat dissipated from the liquid pipe section 48 to the cold heat generation system 21.

The operation of the air conditioner configured as described above will be described below. First, during cooling operation,
The high-temperature side pump 14 is operated, and the heat dissipated in the liquid pipe portion 48 of the outdoor heat exchanger 3 is transferred to the high-temperature side second
Cooling heat generation system 21 flowing into hydrogen storage alloy 11b
By supplying the heat to the heat source of the cold heat generation system 21.

On the other hand, the cold generated by the cold generation system 21 operates the low-temperature side pump 16 to
Thus, the heat is supplied to the outdoor heat exchanger 3 so that the heat radiation of the outdoor heat exchanger 3 can be assisted.

As described above, in the air-conditioning apparatus of this embodiment, during the cooling operation, the cold heat obtained from the cold heat generation system 21 is supplied to the low-temperature heat medium pipe 1 by the low-temperature pump 16.
5, the heat is supplied to the outdoor heat exchanger 3 to assist the heat radiation of the outdoor heat exchanger 3, so that the power consumption of the compressor 1 is reduced, the cooling efficiency is improved, and the hot summer day Thus, it is possible to prevent a decrease in cooling performance due to an increase in the outside air temperature occurring in the air conditioner.

Further, since the heat is sufficiently radiated in the liquid pipe section 48 of the outdoor heat exchanger 3, a large amount of supercooling can be obtained and the cooling capacity can be improved.

Fourth Embodiment FIG. 6 is a system diagram of an air conditioner according to a fourth embodiment of the present invention. Example 1
The same reference numerals are given to the same configurations as in the case of and the detailed description is omitted.

In FIG. 6, reference numeral 49 denotes a discharge pipe,
Is connected to the discharge side of A branch outgoing pipe 50 guides the high-temperature heat medium in the discharge pipe 49 to the high-temperature side second hydrogen storage alloy 11b of the cold heat generation system 21. 51 is an on-off valve,
The branch outgoing pipe 50 is provided. Reference numeral 52 denotes a branch return pipe, which connects a heat medium from the high-temperature side second hydrogen storage alloy 11b of the cold heat generation system 21 to the discharge pipe 49. A check valve 53 is provided on the branch return pipe 52. The check valve 53
Is for preventing the heat medium from flowing into the branch return pipe 52 during the heating operation.

The operation of the air conditioner configured as described above will be described below. First, during cooling operation,
The on-off valve 51 is opened, and the high-temperature heat medium in the discharge pipe 49 is supplied to the high-temperature-side second hydrogen storage alloy 11b through the branch outgoing pipe 50 to serve as a heat source of the cold heat generation system 21. The high-temperature heat medium supplied to the cold heat generation system 21 returns to the discharge pipe 49 through the branch return pipe 52.

On the other hand, the cold generated by the cold generation system 21 causes the low-temperature side pump 16 to operate,
Thus, the heat is supplied to the outdoor heat exchanger 3 so that the heat radiation of the outdoor heat exchanger 3 can be assisted.

As described above, in the air-conditioning apparatus of this embodiment, during the cooling operation, the cold heat obtained from the cold heat generating system 21 is supplied to the low-temperature heat medium pipe 1 by the low-temperature pump 16.
5, the heat is supplied to the outdoor heat exchanger 3 to assist the heat radiation of the outdoor heat exchanger 3, so that the power consumption of the compressor 1 is reduced, the cooling efficiency is improved, and the hot summer day Thus, it is possible to prevent a decrease in cooling performance due to an increase in the outside air temperature occurring in the air conditioner.

Since the high-temperature heat medium in the discharge pipe 49 is branched and used as the heat source of the cold heat generation system 21, the auxiliary heat exchanger 6 in the first embodiment can be omitted.

[0069]

The present invention is embodied in the form described above and has the following effects.

According to the first aspect of the present invention, during the cooling operation, the cold heat obtained from the cold heat generating system driven by the dissipated heat of the compressor or the like is supplied to the outdoor heat exchanger to release the heat of the outdoor heat exchanger. As it assisted, the power consumption of the compressor was reduced and the efficiency of cooling was improved,
It is possible to prevent a decrease in cooling performance due to an increase in outside air temperature that occurs on a hot summer day or the like.

According to the second aspect of the present invention,
At the time of cooling operation, the cool heat obtained from the cold heat generation system driven by the heat dissipated by the compressor is supplied to the outdoor heat exchanger to assist the heat radiation of the outdoor heat exchanger, so that the power consumption of the compressor is reduced. Cooling efficiency is improved, and a decrease in cooling performance due to an increase in outside air temperature that occurs on a hot summer day or the like can be prevented. Also, during the heating operation, the heat dissipated from the compressor is supplied from the high-temperature cold heat pipe to the outdoor heat exchanger through a bypass pipe that short-circuits the cold heat generation system, thereby assisting the heat absorption of the outdoor heat exchanger. In addition, it is possible to prevent a decrease in heating performance due to a decrease in outside air temperature that occurs on a cold winter day or the like. Further, during the heating operation, since the heat dissipated by the compressor is always supplied to the outdoor heat exchanger, the occurrence of frost in the outdoor heat exchanger is suppressed, and the defrosting process can be eliminated.

According to the third aspect of the present invention,
During the cooling operation, the cool heat obtained from the cold heat generating system driven by the heat dissipated from the compressor is supplied to the outdoor heat exchanger through the low-temperature heat medium pipe, so that the heat of the outdoor heat exchanger is assisted. In addition, the power consumption of the compressor is reduced and the efficiency of cooling is improved, and the cooling performance can be prevented from lowering due to an increase in the outside air temperature which occurs on a hot summer day. In addition, during the heating operation, the heat dissipated from the discharge pipe is supplied from the high-temperature heat medium pipe to the outdoor heat exchanger through a bypass pipe that short-circuits the cold heat generation system to assist the heat absorption of the outdoor heat exchanger. It is possible to prevent a decrease in the heating performance due to a decrease in the outside air temperature that occurs on a cold day. Further, during the heating operation, since the heat dissipated from the discharge pipe is always supplied to the outdoor heat exchanger, the occurrence of frost in the outdoor heat exchanger is suppressed, and the defrosting process can be made unnecessary. Since the structure is simpler than that of the compressor, the structure of the auxiliary heat exchanger for recovering the heat dissipated from the discharge pipe can also be simplified.

According to the fourth aspect of the present invention,
During the cooling operation, the cooling heat obtained from the cooling heat generation system driven by the heat dissipated from the outdoor heat exchanger is supplied to the outdoor heat exchanger via the low-temperature heat medium pipe to assist the heat radiation of the outdoor heat exchanger. Accordingly, the power consumption of the compressor is reduced, the efficiency of cooling is improved, and a decrease in cooling performance due to an increase in outside air temperature occurring on a hot summer day or the like can be prevented. In addition, since the heat radiation of the liquid pipe portion in the outdoor heat exchanger is sufficiently performed, a large amount of supercooling can be obtained, and the cooling capacity can be improved.

Further, according to the fifth aspect of the present invention, during the cooling operation, the cold heat obtained from the cold heat generating system driven by the heat dissipated from the compressor is transferred to the outdoor heat exchanger via the low-temperature heat medium pipe. To reduce the power consumption of the compressor and improve cooling efficiency, as well as cooling performance due to the rise in outside air temperature that occurs on hot summer days. Can be prevented from decreasing. In addition, since the high-temperature heat medium in the discharge pipe is branched and used as a heat source of the cold heat generation system, an auxiliary heat exchanger can be eliminated.

[Brief description of the drawings]

FIG. 1 is a system diagram of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a basic diagram of a cold heat generation system in the air conditioner.

FIG. 3 is an application diagram of a cold heat generation system in the air conditioner.

FIG. 4 is a system diagram of an air conditioner according to a second embodiment of the present invention.

FIG. 5 is a system diagram of an air conditioner according to a third embodiment of the present invention.

FIG. 6 is a system diagram of an air conditioner according to a fourth embodiment of the present invention.

FIG. 7 is a system diagram of a conventional air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 4 Expansion valve 5 Indoor heat exchanger 6,47 Auxiliary heat exchanger 11a High temperature side 1st hydrogen storage alloy 11b High temperature side 2nd hydrogen storage alloy 12a Low temperature side 1st hydrogen storage alloy 12b Low-temperature second hydrogen storage alloy 13 High-temperature heat medium pipe 15 Low-temperature heat medium pipe 19a, 19b Bypass pipe 20 Heat pump system 21 Cold heat generation system 46, 49 Discharge pipe 48 Liquid pipe section 50 Branch outgoing pipe 51 Open / close valve 52 Branch return pipe 53 Check valve

Claims (5)

[Claims] 1. A heat pump system having a compressor, an outdoor heat exchanger, an indoor heat exchanger, etc., a cold heat generating system having a hydrogen storage alloy for storing and releasing hydrogen on a high temperature side and a low temperature side, and the cold heat generating system An air conditioner comprising: a passage for guiding heat dissipated by the compressor or the outdoor heat exchanger; and a passage for guiding cold heat from the cold heat generation system to the outdoor heat exchanger. 2. A heat pump system having a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger, and a cold heat generating system having a hydrogen storage alloy for storing and releasing hydrogen on a high temperature side and a low temperature side. An auxiliary heat exchanger that recovers the heat dissipated by the compressor, and a high-temperature heat medium pipe that guides the heat dissipated by the auxiliary heat exchanger to the high-temperature-side hydrogen storage alloy;
A low-temperature heat medium pipe that guides cold generated by the low-temperature side hydrogen storage alloy to the outdoor heat exchanger, and a bypass pipe that short-circuits the cold heat generation system and connects the low-temperature heat medium pipe to the high-temperature heat medium pipe. Equipped air conditioner. 3. A heat pump system having a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger, and a cold heat generation system having a hydrogen storage alloy for storing and releasing hydrogen on a high temperature side and a low temperature side. A discharge pipe connected to the discharge side of the compressor, an auxiliary heat exchanger for recovering the heat dissipated from the discharge pipe, and a high-pressure guide for guiding the heat dissipated by the auxiliary heat exchanger to the high-temperature-side hydrogen storage alloy. A heating medium pipe, a low-temperature heating medium pipe that guides cold generated by the low-temperature side hydrogen storage alloy to the outdoor heat exchanger, and a low-temperature heating medium pipe connected to the high-temperature heating medium pipe by short-circuiting the cold heat generation system Air conditioner equipped with a bypass pipe. 4. A heat pump system having a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger, and a cold heat generation system having a hydrogen storage alloy for storing and releasing hydrogen on a high temperature side and a low temperature side. A high-temperature heat transfer pipe that guides the heat dissipated in the liquid pipe section provided in the outdoor heat exchanger to the high-temperature-side hydrogen storage alloy; and a low-temperature heat guide that guides cold generated by the low-temperature-side hydrogen storage alloy to the outdoor heat exchanger. An air conditioner including a medium pipe. 5. A heat pump system having a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger, and a cold heat generating system having a hydrogen storage alloy for storing and releasing hydrogen on a high temperature side and a low temperature side. A branch outgoing pipe for guiding a high-temperature heat medium of a discharge pipe connected to the discharge side of the compressor to the high-temperature side hydrogen storage alloy, an on-off valve provided in the branch outgoing pipe, and a high-temperature side hydrogen storage alloy. A return pipe for returning the high-temperature heat medium to the discharge pipe, a check valve provided on the return pipe, and a low-temperature heat medium pipe for guiding cold generated by the low-temperature side hydrogen storage alloy to the outdoor heat exchanger. An air conditioner comprising: