Parallel compression type CO2 automotive heat pump air conditioner system with regenerative device

A heat pump air-conditioning and compression technology, which is applied in vehicle parts, transportation and packaging, air handling equipment, etc., can solve the problems of poor heating performance and achieve the effects of improving performance, reducing damage, and reducing energy consumption

Active Publication Date: 2019-05-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the refrigerant commonly used in automotive air conditioners is R134a, but it has a very high GWP (Global Warming Potential) and has very poor heating performance at low temperatures. It is particularly important to find suitable alternative refrigerants and heat pump technologies

Method used

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  • Parallel compression type CO2 automotive heat pump air conditioner system with regenerative device
  • Parallel compression type CO2 automotive heat pump air conditioner system with regenerative device
  • Parallel compression type CO2 automotive heat pump air conditioner system with regenerative device

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Embodiment Construction

[0016] Such as figure 1 As shown, this embodiment includes: two parallel scroll compressors 19 and 24 connected coaxially, a gas cooler 6, an outdoor heat exchanger 27, an intermediate heat exchanger 11, a gas-liquid separator 18, an evaporator 3 and The liquid storage tank 10, wherein: the outlet 20 of the first scroll compressor and the outlet 22 of the second scroll compressor are connected to the input end of the gas cooler 6, and the output end of the gas cooler 6 is exchanged with the middle through the outdoor heat exchanger 27 The high-pressure input end 16 of the heat exchanger 11 is connected, the high-pressure output end 17 of the intermediate heat exchanger 11 is connected with the input end of the gas-liquid separator 18, and the gas output end of the gas-liquid separator 18 is connected with the second scroll compressor inlet 23 , the liquid output end of the gas-liquid separator 18 is connected to the evaporator 3 and the liquid storage tank 10 in turn, the outp...

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Abstract

The invention discloses a parallel compression type CO2 automotive heat pump air conditioner system with a regenerative device. The parallel compression type CO2 automotive heat pump air conditioner system comprises two coaxially-connected parallel scroll compressors, a gas cooler, an outdoor heat exchanger, an intermediate heat exchanger, a gas-liquid separator, an evaporator and a liquid storagetank, wherein the output ends of the two scroll compressors are sequentially connected with the gas cooler, the outdoor heat exchanger, the intermediate heat exchanger and the gas-liquid separator, the gas-phase output end of the gas-liquid separator is connected with the input end of the second scroll compressor, the liquid-phase output end of the gas-liquid separator is connected with the evaporator and the liquid storage tank sequentially and connected with the input end of the first scroll compressor through the intermediate heat exchanger, the intermediate heat exchanger further cools ahigh-temperature refrigerant flowing out of the gas cooler while increasing the gas suction superheat degree, and the achieved effects are superimposed with the parallel compression effect to achieveperformance optimization. In a refrigeration mode of the parallel compression type CO2 automotive heat pump air conditioner system, the parallel compression scheme is adopted to solve the problem of efficiency attenuation of the CO2 refrigerant in the high-temperature environment and lower energy consumption.

Description

technical field [0001] The invention relates to a technology in the field of vehicle air conditioners, in particular to a parallel compression CO 2 Automotive heat pump air conditioning system. Background technique [0002] For heating in winter, compared with traditional internal combustion engine vehicles, electric vehicles have no engine waste heat that can be used, and heat pump technology is becoming more and more popular in electric vehicles. At present, the refrigerant commonly used in automotive air conditioners is R134a, but it has a very high GWP (Global Warming Potential), and its heating performance at low temperatures is very poor. It is particularly important to find suitable alternative refrigerants and heat pump technologies. Contents of the invention [0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes a parallel compression CO 2 The automotive heat pump air-conditioning system can switch between cooling an...

Claims

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Application Information

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IPC IPC(8): B60H1/00
Inventor 俞彬彬王丹东杨婧烨柳慈翀蒋甫政王雨风张振宇高天元施骏业陈江平
Owner SHANGHAI JIAO TONG UNIV
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