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Refrigerating-heating air conditioning system with heat regenerator

An air-conditioning system and regenerator technology, which is applied in the field of dual-system air-conditioning systems, can solve the problems of not being realized and applied, and achieve the effects of improving the cooling coefficient and heating coefficient, preventing liquid shock, and improving efficiency

Active Publication Date: 2013-09-11
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, regenerators have been used in air-conditioning refrigeration circuits, but using the same regenerator to achieve heat recovery in both cooling and heating circuits has not yet been realized and applied

Method used

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  • Refrigerating-heating air conditioning system with heat regenerator
  • Refrigerating-heating air conditioning system with heat regenerator
  • Refrigerating-heating air conditioning system with heat regenerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] refer to figure 1 , a cooling and heating dual-system air conditioning system with a regenerator, one end of the liquid side of the regenerator 5 is connected to one end of the indoor heat exchanger 7 through the expansion valve 6 and the A check valve 9 in sequence, and the regenerator The other end of the liquid side of 5 is connected to one end of the outdoor heat exchanger 3 through the B check valve 8; one end of the A branch pipe 12 is connected to the pipeline between the expansion valve 6 and the A check valve 9, and the other end is connected to On the pipeline between the B check valve 8 and the outdoor heat exchanger 3, the A branch pipe 12 is provided with a C check valve 11; one end of the B branch pipe 13 communicates with the A check valve 9 and the indoor heat exchanger 7, the other end is connected to the pipeline between the B check valve 8 and the regenerator 5, and the B branch pipe 13 is provided with a D check valve 10; one end of the gas side of t...

Embodiment 2

[0026] refer to figure 2 , a dual-cooling and heating air-conditioning system with a regenerator, one end of the gas side of the regenerator 5 communicates with one end of the outdoor heat exchanger 3 through the A four-way reversing valve 2; the regenerator One end of the liquid side of 5 is connected to one end of the indoor heat exchanger 7 through the B four-way reversing valve 4, and the other end of the indoor heat exchanger 7 is connected to a port of the A four-way reversing valve 2, and the A four-way reversing valve The other port of the valve 2 is connected with the exhaust pipe end of the compressor 1, and the suction pipe end of the compressor 1 is connected with the other end of the gas side of the regenerator 5 through the liquid receiver 14, and the B four-way reversing valve One end of the other two ends of 4 communicates with the other end of the outdoor heat exchanger 3 , and the other end connects with the other end of the liquid side of the regenerator 5 ...

Embodiment 3

[0031] refer to image 3 , a cooling and heating dual-system air conditioning system with a regenerator, one end of the liquid side of the regenerator 5 is connected to one end of the outdoor heat exchanger 3 through the expansion valve 6 and the A four-way reversing valve 2 in sequence; The other end of the liquid side of the heat exchanger 5 is connected to one end of the indoor heat exchanger 7 through the B four-way reversing valve 4, and the other end of the indoor heat exchanger 7 is connected to a port of the A four-way reversing valve 2. The other port leading to the reversing valve 2 is connected to the exhaust pipe end of the compressor 1, and the suction pipe end of the compressor 1 is connected to one end of the gas side of the regenerator 5 through the liquid receiver 14, and the B four-way switch One end of the other two ends of the valve 4 is connected to the other end of the gas side of the regenerator 5 , and the other end is connected to the other end of the ...

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Abstract

A refrigerating-heating air conditioning system with a heat regenerator comprises an outdoor heat exchanger and an indoor heat exchanger. The heat regenerator is connected between the outdoor heat exchanger and the indoor heat exchanger. During heating, flowing direction of refrigerants is changed through a four-way reversing valve, the indoor heat exchanger is used as a condenser, and the outdoor unit is used as an evaporator. Refrigerant gas is sucked into a compressor and then pressurized to be changed into high-temperature high-pressure refrigerant gas, the high-temperature high-pressure refrigerant gas is condensed and emits heat in the indoor heat exchanger to be changed into intermediate-temperate high-pressure liquid, indoor air passes the surface of the indoor heat exchanger to be heated so as to increase the indoor temperature, the intermediate-temperate high-pressure liquid is subjected to throttling and depressurization of an expansion valve to be changed into low-temperate low-pressure liquid, the low-temperate low-pressure liquid is changed into low-temperate low-pressure gas in the outdoor heat exchanger, outdoor air passes the surface of the outdoor heat exchanger to be cooled, the low-temperate low-pressure gas is sucked into the compressor, and circulation in the way is carried out. Efficiency of the compressor can be improved, liquid impact is prevented, and optimal refrigerant charge of a system is decreased.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a cooling and heating dual-system air conditioning system with a regenerator. Background technique [0002] In the air conditioning and refrigeration system, in order to increase the cooling capacity of the system and ensure the normal operation of the system, a regenerator is sometimes installed. The regenerator enables heat exchange between the pre-throttle liquid and the conditioned vapor from the evaporator. As a result of the exchange, the subcooling degree of the refrigerant liquid increases, the superheating degree of the air-conditioning vapor in the return air pipe increases, and the temperature of the compressor inlet airflow increases. In this way, it can not only increase the unit cooling capacity and enhance the heat transfer of the evaporator, but also reduce the ineffective overheating, increase the suction temperature of the compressor and the working tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B40/06F25B13/00F25B29/00
Inventor 吴建华张泽
Owner XI AN JIAOTONG UNIV
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