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Air circulation heat pump air conditioning system and using method

A heat pump air conditioning and air circulation technology, applied in air conditioning systems, heating methods, space heating and ventilation, etc., can solve the problem of inconsistency between heating and building heat load changes, and achieve energy saving, operating cost savings, and high efficiency. Effect

Pending Publication Date: 2021-07-16
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the fact that the refrigerants used in existing air conditioning systems rarely meet the functions of zero ODP and low GWP, the heating capacity of traditional vapor compression heat pumps is inconsistent with the change of building heat load, and frosting and defrosting cannot be avoided for commonly used air source heat pumps The present invention provides an air cycle heat pump air-conditioning system and its use method. The system adopts the structure of dual air compressors (the air compressor is connected in series with the turbine compressor parts and then connected in parallel with another air compressor), and a four-way reversing valve is set. It is used to switch between winter and summer working conditions, which can realize heating in winter and air conditioning in summer

Method used

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  • Air circulation heat pump air conditioning system and using method

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Effect test

Embodiment 1

[0031] In the winter air-conditioning mode, the cold air in the atmospheric environment enters through the outdoor air inlet 18 and is divided into two paths:

[0032] The first path of air enters the second heat exchanger 10 through port a and port b of the first four-way reversing valve 13, and is divided into two paths after being preheated. One of them enters the intake end of the first air compressor 1, and after being compressed and heated by the first air compressor 1, it is discharged from the exhaust end and enters the compressor part 401 of the first turbine compressor part 7, and is compressed by the compressor part 401 to raise the temperature and boost the pressure. Finally, it is discharged from the exhaust end; the other path enters the intake end of the second air compressor 2, and is discharged from the exhaust end after being compressed by the second air compressor 2 to increase the temperature and pressure. The two air paths are mixed and enter the first heat...

Embodiment 2

[0037] In the summer air-conditioning mode, the hot air in the atmospheric environment enters through the outdoor air inlet 18 and is divided into two paths:

[0038] The first path enters the inlet of the first fan 5 through ports a and c of the first four-way reversing valve 13, and enters the first heat exchanger 9 after being discharged by the first fan 5. In the first heat exchanger 9 After being heated, it is discharged into the outdoor atmosphere through the d port and b port of the second four-way reversing valve 14 and the outdoor air outlet A19.

[0039] The second road is divided into two roads after passing through the c port and a port of the third four-way reversing valve 15, one of which enters the intake port of the third air compressor 3, and is compressed and heated by the third air compressor 3. After being discharged from the gas end, it enters the compressor part 401 of the second turbine compressor part 8. After being compressed by the compressor part 401...

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Abstract

The invention belongs to the field of air conditioning systems, and discloses an air circulation heat pump air conditioning system and a using method. The system comprises an indoor return air circulation part and an outdoor fresh air circulation part, winter air conditioning and summer air conditioning are achieved through heat exchange with the outdoor environment and heat exchange with internal circulation air, the working condition cold end in winter is communicated with the atmosphere, and the advantage that an air circulation heat pump is not frosted can be utilized; and under the summer working condition, the cold end is directly communicated with indoor air, and heat loss caused by heat exchange temperature difference can be effectively reduced. Outdoor air is treated to meet the requirement for fresh air of an air conditioner, cold and heat of indoor exhaust air of a building can be effectively recycled, the energy-saving effect is improved, meanwhile, air is used as a refrigerant, and environment friendliness is achieved.

Description

technical field [0001] The invention belongs to the field of air conditioning systems, in particular to an air conditioning system based on air circulation. Background technique [0002] At this stage, with the improvement of living standards, people have higher and higher requirements for indoor environment, and the use of air conditioners is becoming more and more common. Existing air conditioning systems (including household air conditioners and commercial air conditioners) mostly use traditional vapor compression refrigeration (heat pump) cycles. As the world pays more and more attention to global warming and environmental protection issues, it is facing the problem of refrigerant selection . At present, the progress of new refrigerant replacement research is not optimistic. There are only a handful of refrigerants that can be used in air conditioning applications in the thermodynamic range and meet zero ODP and low GWP. They only contain some flammable hydrocarbons, to...

Claims

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Application Information

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IPC IPC(8): F24F5/00F24F11/84F24F13/30
CPCF24F5/001F24F13/30F24F11/84
Inventor 刘禹彤蒋爽张宇坤毕海洋乌羡梅折瑞
Owner DALIAN NATIONALITIES UNIVERSITY