JP2980624B2 - Cooling method using heat storage type liquid receiver and liquid pump, and cooling and heating methods - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a cooling method using a regenerative liquid receiver and a liquid pump,
And cooling and heating methods.

(Prior Art) As a conventional cooling device, for example, FIG.
The structure shown in the figure is known.

In the conventional cooling method shown in FIG. 5, a compressor 1, a condenser 2, an expansion valve 3, and an evaporator 4 are sequentially connected to form an inverse Carnot cycle, and the compressor 1 compresses a heat refrigerant and condenses the refrigerant. A method of condensing in an evaporator 2, expanding in an expansion valve 3, and cooling in an evaporator 4 has been adopted.

The conventional cooling system of the liquid pump type shown in FIG. 6 forms a primary cooling cycle by sequentially connecting a compressor 1, a condenser 2, a float type expansion valve 3, and a low pressure receiving tank 5. The low-pressure liquid receiving tank 5, the liquid pump 6, and the evaporator 4 are sequentially connected to form a secondary cooling cycle, and the primary cooling cycle and the secondary cooling cycle form an inverse Carnot cycle. The refrigerant is compressed, condensed by the condenser 2, expanded by the expansion valve 3, and supplied with the cooling refrigerant liquid to the low-pressure liquid receiving tank 5, and supplied with the liquid pump 6 from the low-pressure liquid receiving tank 5 to the evaporator 4. Then, a method of cooling in the evaporator 4 has been adopted.

However, in the conventional methods shown in FIGS. 5 and 6, since the cold heat of the heat refrigerant is not stored, the compressor 1 must be operated at the time of cooling.

As a regenerative refrigerating apparatus that can store cold heat, for example, a method described in Japanese Patent Application Laid-Open No. 63-116055 is known. In the method described in this publication, a fluid path switching device is provided between a high-pressure liquid receiver and an expansion valve, and the heat refrigerant supercooled in the regenerator is supplied through the fluid path switching device before the expansion valve. It is designed to reduce the volume of the refrigeration system by using the heat refrigerant that has been returned and passed through the low-pressure liquid receiving tank to store the cold.

(Problems to be Solved by the Invention) However, in the method described in JP-A-63-116055, the heat medium is temporarily stored in the high-pressure liquid receiving tank, and the low-pressure liquid receiving tank must be used. There is a problem that the structure becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a simple configuration and, when desired, operates a compressor using nighttime electric power to store heat, and cools without operating the compressor at any time. Another object of the present invention is to provide a cooling method and a cooling and heating method using a heat storage type liquid receiver and a liquid pump capable of cooling and heating.

(Means for Solving the Problems) The cooling method using the regenerative liquid receiver and the liquid pump according to the first invention includes an inverted Carnot cycle including a compressor, a condenser, an expansion valve, and an evaporator. A low-pressure receiver filled with cold storage material is provided in a bypass pipe that connects the high-pressure liquid pipe and the suction pipe of the Carnot cycle, and a heat medium discharged from the compressor is circulated to the suction side through the low-pressure receiver. Then, cold heat is stored in the cold storage material, and the heat medium cooled in the low-pressure receiver is circulated to the evaporator by a liquid pump to be cooled.

A cooling and heating method using a regenerative liquid receiver and a liquid pump according to a second aspect of the present invention includes a compressor, an evaporator and condenser, an expansion valve, and a heat exchanger, and a heat medium flow path can be switched by a four-way valve. The heat pump cycle is provided with a receiver filled with a cold storage material or a heat storage material in a bypass pipe communicating with the heat medium flow path of the heat pump cycle, and the heat medium discharged from the compressor is received by the liquid receiver. Circulating to the suction side through a vessel to store cold or warm heat in the cold storage material or the hot storage material, and circulating the heat medium of the liquid receiver to the evaporator / condenser by a liquid pump and the cold storage material or The heat accumulating material is sprayed through a circulation pipe by spraying to cool or heat.

(Function) In the cooling method using the regenerative liquid receiver and the liquid pump according to the first invention, in the case of cold heat storage, the heat medium is compressed by a compressor, condensed by a condenser, and the low-temperature liquid is received by a low-pressure receiver. Store in cold storage material.
In the case of cooling, cooling is performed by circulating a heat medium having cold heat stored in a cold storage material of the low-pressure liquid receiver to an evaporator by a liquid pump.

In the cooling and heating method using the heat storage liquid receiver and the liquid pump according to the second invention, in the case of cold heat storage, the heat medium is compressed by a compressor, condensed by a heat exchanger, and the cold heat is supplied to the receiver. Store in cool storage material. In the case of cooling, the heat medium having cold heat stored in the cold storage material of the liquid receiver is circulated to the evaporator / cooler by a liquid pump and sprayed on the cold storage material via a circulation pipe by spraying. Perform cooling. Further, in the case of thermal heat storage, the heat medium is compressed by a compressor and the heat storage material of the liquid receiver stores the heat. In the case of heating, the heat medium having the heat stored in the heat storage material of the liquid receiver is circulated to the evaporator and cooler, and is sprayed to the heat storage material via a circulation pipe to be heated. I do.

(Embodiment) Hereinafter, a cooling method using a regenerative liquid receiver and a liquid pump according to an embodiment of the present invention will be described with reference to the drawings.

The components corresponding to those of the apparatus for implementing the conventional method shown in FIGS. 5 and 6 will be described with the same reference numerals.

FIG. 1 shows a direct expansion type cooling device. A condenser 2 for cooling a heat medium is connected to a discharge port of a compressor 1 for compressing the heat medium through a discharge pipe 11, and the condenser 2 has a high pressure. An expansion valve 3 for expanding the heat medium is connected via a liquid pipe 12 and a three-way valve 13 connected to the high-pressure liquid pipe 12. An evaporator 4 for cooling with a heat medium is connected to the expansion valve 3.
The suction port of the compressor 1 is connected to the evaporator 4 via two three-way valves 14 and 15 and a suction pipe 16. The compressor 1, the condenser 2, the expansion valve 3, and the evaporator 4 form an inverse Carnot cycle.

In the reverse Carnot cycle, a bypass pipe 17 that connects the high-pressure liquid pipe 12 and the suction pipe 16 is provided, and the bypass pipe 17 is connected to a liquid pipe 18 branched from the high-pressure liquid pipe 12 and the three-way pipe. It is formed by a gas pipe 19 branched and connected to the valve 13, and as a low-pressure low-pressure receiver through an expansion valve 20 for a liquid receiving tank at an intermediate portion between the liquid pipe 18 and the gas pipe 19. The liquid receiving tank 21 is connected. In the liquid receiving tank 21, a cool storage material 22 having a latent heat freezing point equal to or lower than the evaporation temperature of the evaporator 4 is enclosed and stored in a closed pack such as a capsule.

Further, a liquid pump 23 is built in the liquid reservoir of the liquid receiving tank 21, and the liquid pump 23 is connected to a circulation pipe 24, and the circulation pipe 24 is provided at an upper portion in the liquid receiving tank 21. Sprayed
Connected to 25. A supply pipe 26 connected to the liquid pump 23 is connected between the expansion valve 3 and one end of the evaporator 4 via a valve 27. A three-way valve 14 connected to the other end of the evaporator 4 has A return pipe 28 is connected so that the heat medium returns to the liquid receiving tank 21.

 The operation of the embodiment shown in FIG. 1 will be described.

First, when cold heat storage is performed, the heat medium is compressed by the compressor 1 and the heat medium, which has become high temperature and high pressure by this compression, is discharged from the discharge pipe 11.
The condensed heat medium is supplied to the expansion valve 20 for the liquid receiving tank through the high-pressure liquid pipe 12, the three-way valve 13, and the liquid pipe 18 of the bypass pipe 17 through the condenser 2. The liquid is expanded and evaporated by the expansion valve 20 for the liquid tank, and the cold storage material 22 is cooled to store cold heat as latent heat. Then, the heat medium is returned to the compressor 1 again through the gas pipe 19, the three-way valve 15, and the suction pipe 16.

Next, when cooling using the cold stored in the cold storage material 22, the valve 27 is opened and the liquid pump 23 is used to cool the cold storage material.
The heat medium cooled at 22 and having cold heat is sent to the evaporator 4,
The gas heat medium evaporated by the evaporator 4 is cooled by the evaporator 4, and the three-way valve 14 and the return pipe
It is returned to the liquid receiving tank 21 via 28. And at the same time, the liquid pump 23
The liquid heating medium is sent from the circulation pipe 24 to the spray 25 under pressure, sprayed from the spray 25 and evaporated to cool the liquid heating medium by the latent heat of vaporization.

When cooling is performed only by the output of the compressor 1, the heat medium is compressed by the compressor 1, and the heat medium, which has become high pressure and high temperature by the compression, is cooled by the condenser 2 through the discharge pipe 11. The heated heat medium is supplied to the expansion valve 3 via the high-pressure liquid pipe 12 and the three-way valve 13, expanded by the expansion valve 3, evaporated by the evaporator 4, and cooled. Is returned to the compressor 1 via the three-way valve 14, the suction pipe 16 and the three-way valve 15.

In the embodiment shown in FIG. 1, since the liquid pump 23 is built in the liquid reservoir of the liquid receiving tank 21, the liquid pump 23 is
A head is not required compared to a configuration installed outside of the device, and it is excellent in non-seal measures. However, the configuration is not limited to this configuration.
It can be configured to be installed outside of 21.

As another embodiment, a cooling method using a pump-type cooling device will be described with reference to FIG.

2, the condenser 2 is connected to the compressor 1 via a discharge pipe 31. The condenser 2 is connected to a low-pressure receiving tank 34 via a high-pressure liquid pipe 33 having a three-way valve 32. It is connected to a float type expansion valve 3. The low-pressure liquid receiving tank 34 is connected to the compressor 1 via a suction pipe 36 having a three-way valve 35. The low-pressure receiving tank 34 is connected to the evaporator 4 through a liquid pipe 40 having a three-way valve 37, a liquid pump 38, and a regulating valve 39. The evaporator 4 is connected via a three-way valve 41 and a return pipe 42. It is connected to the low-pressure liquid receiving tank. And the compressor 1,
A reverse Carnot cycle is formed by the condenser 2, the expansion valve 3, the evaporator 4, and the like.

Further, a liquid receiving tank 21 is connected to a three-way valve 32 connected to the high-pressure liquid pipe 33 via a liquid pipe 44 having an expansion valve 20 for the liquid receiving tank, and a cold storage material 22 is sealed in the liquid receiving tank 21. Have been. The liquid receiving tank 21 is connected to a three-way valve 37 of a liquid pipe 40 connected to the low-pressure liquid receiving tank 34 from a liquid reservoir via a liquid pipe 45, and an upper portion of the liquid receiving tank 21 is connected via a gas pipe 46. The suction pipe 36 connected to the compressor 1 is connected to a three-way valve 35. Further, a circulating pipe 47 branches from between the liquid pump 38 and the regulating valve 39, and the circulating pipe 47 is connected to the spray 25 of the liquid receiving tank 21 and to the return pipe connected to the evaporator 4. Three-way valve 41 for pipe 42
Is connected to the liquid receiving tank 21 via the return pipe 48.

 The operation of the embodiment shown in FIG. 2 will be described.

First, in the case of storing cold heat, the heat medium is compressed by the compressor 1 and the heat medium, which has become high pressure and high temperature by the compression, is discharged from the discharge pipe 31.
Through the high-pressure liquid pipe 33, the three-way valve 32, and the liquid pipe 44 to the expansion valve 20 for the liquid receiving tank. The cold storage material 22 in the liquid receiving tank 21 is cooled by expansion and evaporation by the expansion valve 20. Then, the heat medium is returned to the compressor 1 again through the gas pipe 46, the three-way valve 35, and the suction pipe 36.

When cooling using the cold stored in the cold storage material 22, the liquid pump 38 is driven and the heat medium in the liquid receiving tank 21 is supplied to the liquid pipe 45.
Then, the liquid is sent from the liquid pump 38 via the three-way valve 37 to the evaporator 4 via the liquid pipe 40 and the regulating valve 39, and is evaporated and cooled by the evaporator 4. Then, the gaseous heat medium evaporated in the evaporator 4 is passed through the three-way valve 41 and the return pipe 48 to the liquid receiving tank 21.
And store the latent heat. At the same time, the heat medium is circulated to the liquid receiving tank 21 by the liquid pump 38 via the circulation pipe 47 and sprayed on the cold storage material 22 by the spray 25 to cool the cold storage material 22.

In the case of direct cooling by the output of the compressor 1, the medium is compressed by the compressor 1, and the heat medium, which has become high pressure and high temperature by the compression, is cooled and liquefied by the condenser 2, and the liquefied heat medium Is supplied to the expansion valve 3 via the high-pressure liquid pipe 33 and the three-way valve 32, and is expanded by the expansion valve 3 to flow into the low-pressure liquid receiving tank. Then, the liquid pump 38 adjusts the liquid level of the low-pressure liquid receiving tank 34 by adjusting the flow rate of the liquid heat medium through the three-way valve 37 and the liquid pipe 40 and the adjusting valve 39, and supplies the liquid to the evaporator 4. This heat medium is evaporated by the evaporator 4 and cooled. After the cooling, the gaseous heat medium is supplied to the three-way valve 41 and the return pipe.
42, return to the low pressure receiving tank 34, and return to the compressor 1 via the suction pipe 36 and the three-way valve 35.

 Another embodiment will be described with reference to FIG.

In the embodiment shown in FIG. 3, a condenser 2 is connected to a compressor 1 via a discharge pipe 51, and a cool storage material 22 is accommodated in the condenser 2 via a high-pressure liquid pipe 52 having an expansion valve 3. Liquid receiving tank
21 is connected. The evaporator 4 is connected to the liquid reservoir in the liquid receiving tank 21 via a liquid pump 53, a three-way valve 54, and a liquid pipe 56 having a regulating valve 55. The evaporator 4 is connected via a return pipe 57. The liquid receiving tank 21 is connected to the liquid receiving tank 21.
Is connected to the compressor 1 via the. An inverse Carnot cycle is formed by the compressor 1, the condenser 2, the expansion valve 3, the evaporator 4, and the like. Further, the three-way valve 54 is connected to the spray 25 of the liquid receiving tank 21 via a liquid pipe 59.

 The operation of the embodiment shown in FIG. 3 will be described.

First, when cold heat storage is performed, the heat medium is compressed by the compressor 1, and the heat medium heated by the compression is supplied to the condenser 2 through the discharge pipe 51, and is condensed by the condenser 2. The heat medium is supplied to the expansion valve 3 via the high-pressure liquid pipe 52, and is expanded and evaporated by the expansion valve 3 to cool the cold storage material 22.
Then, the heat medium returns to the compressor 1 again via the suction pipe 58.

When cooling using the cold stored in the cold storage material 22, the liquid pump 53 is driven, and the liquid pump 53 transfers the heat medium through the three-way valve 54, the regulating valve 55 and the liquid pipe 56 to the evaporator 4. And cooled by the evaporator 4. Then, the gaseous heat medium evaporated by the evaporator 4 is returned to the liquid receiving tank 21 via the return pipe 57 to store the latent heat. Further, by driving the liquid pump 53, the heat medium is circulated through the circulation pipe 59 to the liquid receiving tank 21, and the spray 25
Is sprayed on the cold storage material 22 to cool the cold storage material 22.

In addition, any of the above embodiments of the cooling method can be used for any of a refrigerator, a refrigerator, a refrigerated warehouse, a freezing device, and the like.

An embodiment of a heat pump type cooling and heating method will be described with reference to FIG.

The cooling and heating device shown in FIG.
A circulation pipe 71 is connected to the four-way valve 71 and has a three-way valve 72.
An evaporator / condenser 74 is connected via 73, and the expansion valve 3 is connected to the evaporator / condenser 74 via a liquid pipe 75, and the expansion valve 3 is connected to outside air heat exchange as a heat exchanger. The condenser 2 of the outside air heat exchanger 76 is connected to the circulation pipe
It is connected to the four-way valve 71 via 77.

The compressor 1, the evaporator / condenser 74, the expansion valve 3 and the outside air heat exchanger 76 are connected to the reverse carnot in any direction even if the compression direction of the compressor 1 is switched by the four-way valve 71. A cycle heat pump cycle is formed.

Further, a liquid pipe 78 is branched from a liquid pipe 75 and connected to an expansion valve 20 for a liquid receiving tank. The expansion valve 20 for the liquid receiving tank is a liquid receiver filled with a cold storage material 22 and a heat storage material 80. Is connected to the liquid receiving tank 21 as the first. Further, the upper part of the liquid receiving tank 21 is connected to a three-way valve 72 via a gas pipe 81, and the liquid reservoir of the liquid receiving tank 21 is connected to a liquid pipe 75 via a three-way valve 82. A circulation pipe 84 having a liquid pump 83 is connected to the three-way valve 82, and the circulation pipe 84 is connected to the spray 25 of the liquid receiving tank 21 via a liquid pipe 75 and a circulation pipe 86. It is connected to the. Note that a heat medium flow path is configured by the circulation pipe 73, the liquid pipe 75, the circulation pipe 77, and the like, and a bypass pipe is configured by the liquid pipe 78, the gas pipe 81, and the like.

 The operation of the embodiment shown in FIG. 4 will be described.

First, when heating, for example, storing heat for heating, the four-way valve 71 is switched to a path indicated by a solid line, and the compressor 1 compresses a heat medium such as an evaporative heating gas to increase the temperature, thereby circulating the heat. Liquid receiving tank via pipe 73, three-way valve 72 and gas pipe 81
A heat medium is supplied to the storage tank 21, and a heat storage material 80 such as a latent heat storage material in the liquid receiving tank 21 is heated to store heat. Then, the heat medium is supplied to the outside air heat exchanger 76 through the liquid pipe 75 and the expansion valve 3, and returned to the compressor 1 through the circulation pipe 77 and the four-way valve 71.

When heating with the heat of the heat storage material 80 in the stored liquid receiving tank 21, the three-way valve 82 and the circulation pipe 8 are operated by the liquid pump 83.
4. A heat medium is supplied to the evaporator / condenser 74 via the three-way valve 87 and the liquid pipe 75, and is condensed by the hot water load of the evaporator / condenser 74 to supply hot water to the hot water. And the heat medium is a liquid tube
73, return to the liquid receiving tank 21 via the three-way valve 72 and the liquid pipe 81. At the same time, the three-way valve 82 and the circulation pipe 8 are
4, via the three-way valve 87 and the circulation pipe 86, to the heat storage material 80,
Spray the heat medium with spray 25.

In the case of heating by the output of the compressor 1, the medium is compressed by the compressor 1, and the heat medium which has become hot by the compression is condensed as an evaporator through the four-way valve 71, the circulation pipe 73 and the three-way valve 72. To the heater 74 to supply hot water to the hot water. Then, the liquid pipe 75, the expansion valve 3, the condenser 2 of the outside air heat exchanger 76, the circulation pipe 77
Then, the heat medium is returned to the compressor 1 via the four-way valve 71.

Then, in the case of cooling, for example, when storing cold heat for cooling, the four-way valve 71 is switched to the path indicated by the broken line, the heat medium is compressed by the compressor 1, and the outside air heat is transmitted through the four-way valve 71 and the circulation pipe 77. Condensed in the condenser 2 of the exchanger 76, the heat medium is expanded and evaporated by the expansion valve 20 through the expansion valve 3, the liquid pipe 75 and the liquid pipe 78, for example, a latent heat storage material in the liquid receiving tank 21. Cold storage materials such as
22 is cooled and stored cold. And gas pipe 81, three-way valve
72, the heat medium is transferred to the compressor 1 through the circulation pipe 73 and the four-way valve 71.
Return to

When cooling using the cold stored in the cold storage material 22, the heat medium is supplied to the spray 25 by the liquid pump 83 via the three-way valve 82, the circulation pipe 84, the three-way valve 87, and the circulation pipe 86. The heat storage medium 22 is cooled by the heat medium from the spray 25, and the heat medium is supplied to the evaporator / condenser 74 via the three-way valve 87 and the liquid pipe 75 to be cooled. And
The evaporated heat medium is returned to the liquid receiving tank 21 via the three-way valve 72 and the gas pipe 81.

Further, when cooling from the output of the compressor 1, for example, for cooling, the medium is compressed by the compressor 1, and the heat medium which has become high pressure and high temperature by this compression is exchanged with the outside air through the four-way valve 71 and the circulation pipe 77. The high-temperature heat medium is expanded by the expansion valve 3 by the condensing action of the outside air heat exchanger 76, and evaporated by the evaporator / condenser 74 through the liquid pipe 75 to make cold water. afterwards,
The heat medium is returned to the compressor 1 via the three-way valve 72, the circulation pipe 73 and the four-way valve 71.

Further, in this embodiment, the cold storage material 22 and the heat storage material 80 are:
Although the latent heat storage material and the latent heat storage material are used, a sensible heat storage material and a sensible heat storage material may be used.

In each of the above embodiments, the liquid receiving tank is used.
Since the cold storage material 22 or the heat storage material 80 is provided on the cold storage material 22 or the heat storage material 80 so that the cold and hot heat can be stored in the cold storage material 22 or the heat storage material 80, the cold storage heat and the heat can be stored at a desired time with a simple configuration. Cooling or heating can be performed using hot and cold heat.
Therefore, the compressor 1 is operated to store heat by using the nighttime power or the late-night power at a low power rate, and the cooling is performed by using the cold storage heat stored in the liquid receiving tank 21 in a time period when the power rate is high. When heating is performed, cooling and heating can be performed at a low power rate, and surplus power at night or late at night can be used, and power leveling and efficient operation can be performed.

In addition, the heat medium is circulated to the evaporator 4 and the evaporator / condenser 74 using the liquid pumps 23, 38, 53, 83, and the heat medium is cooled using the liquid pumps 23, 38, 53, 83. Since the spray 25 is sprayed toward the heat storage material 80, heat exchange between the heat medium and the cold storage material 22 or the heat storage material 80 in the liquid receiving tank 21 can be improved, and the cooling and heating can be efficiently performed as a whole. It can be performed. Furthermore, existing existing equipment can be easily modified.

(Effects of the Invention) According to the present invention, a low-pressure receiver filled with a regenerator material in a bypass pipe that connects a high-pressure liquid pipe and a suction pipe of an inverse Carnot cycle composed of a compressor, a condenser, an expansion valve, and an evaporator. A liquid container is provided, and the heat medium discharged from the compressor is circulated to the suction side through the low-pressure receiver to store cold heat, and the heat medium of the low-pressure receiver is transferred to the evaporator by a liquid pump. Since the cooling is performed by circulating the heat, the heat can be stored at a desired time with a simple configuration, and the cooling can be performed using the cold heat stored at an arbitrary time, so that the cost can be reduced and the power can be leveled.

According to the second aspect of the present invention, there is provided a heat pump cycle comprising a compressor, an evaporator / condenser, an expansion valve, and a heat exchanger, wherein a heat medium flow path can be switched by a four-way valve. The bypass pipe communicating with the flow path is provided with a liquid receiver filled with a cold storage material or a heat storage material, and the heat medium discharged from the compressor is circulated to the suction side through the liquid receiver to store heat, and the liquid is received. Since the heat medium of the vessel was circulated to the evaporator and condenser by a liquid pump and cooled or heated,
With a simple configuration, heat can be stored at desired times, and cooling, cooling, or heating can be performed at any time by using cold or cold heat in a responsive manner, so that costs can be reduced and power can be leveled. Since the medium is circulated to the evaporator / condenser by the liquid pump and sprayed to the cold storage material or the heat storage material via the circulation pipe by spraying, the heat medium and the cold storage material or the heat storage material in the liquid receiver are separated. The efficiency of heat exchange can be improved, and cooling and heating can be efficiently performed as a whole.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a cooling device for carrying out the cooling method of the present invention, FIG. 2 is a block diagram showing another embodiment of a pump type cooling device for carrying out the cooling method of the present invention, FIG. 3 is a block diagram showing one embodiment of a cooling device for carrying out the cooling method of the present invention, and FIG. 4 is a cooling and heating device of a heat pump type of a cooling and heating method for carrying out the cooling and heating method of the present invention. 5 and 6 are block diagrams showing a conventional cooling device. DESCRIPTION OF SYMBOLS 1 ... Compressor, 2 ... Condenser, 3 ... Expansion valve, 4 ... Evaporator, 12 ... High pressure liquid pipe, 16 ... Suction pipe, 17 ... Bypass pipe, 21 ... Receiving tank, 22 ... cold storage material, 23, 38, 53, 83 ... liquid pump, 25 ... spray, 71 ... four-way valve, 74 ... evaporator / condenser, 76 ... heat exchanger, 80 ... temperature storage Lumber, 84,86 ……
Circulation tube.

Continuation of the front page (56) References Japanese Utility Model Sho-63-32265 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F25B 1/00 F25B 13/00

Claims (2)

(57) [Claims] 1. A low-pressure system comprising a reverse Carnot cycle comprising a compressor, a condenser, an expansion valve and an evaporator, wherein a bypass pipe connecting the high-pressure liquid pipe and the suction pipe of the reverse Carnot cycle is filled with a cold storage material. A liquid receiver is provided, the heat medium discharged from the compressor is circulated to the suction side through the low-pressure liquid receiver to store cold heat in the cold storage material, and the heat medium cooled in the low-pressure liquid receiver is provided. And cooling by circulating the liquid through the evaporator with a liquid pump. 2. A heat pump cycle comprising a compressor, an evaporator / condenser, an expansion valve, and a heat exchanger, wherein a heat medium flow path can be switched by a four-way valve. A bypass pipe communicating with a passage is provided with a liquid receiver filled with a cold storage material or a heat storage material, and the heat medium discharged from the compressor is circulated to the suction side via the liquid receiver to thereby receive the cold storage material or the storage material. Cold or hot heat is stored in the hot material, and the heat medium of the receiver is circulated to the evaporator / condenser by a liquid pump and sprayed on the cold material or the hot material via a circulation pipe by spraying. A cooling and heating method using a heat storage type liquid receiver and a liquid pump characterized by cooling or heating.