Air-supply enthalpy-increasing air-conditioning system suitable for passenger car

Abstract

The invention discloses an air-supply enthalpy-increasing air-conditioning system suitable for a passenger car. The air-supply enthalpy-increasing air-conditioning system comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger and an air supply and enthalpy increasing unit, the air supply and enthalpy increasing unit comprises an economizer, an air supply expansion valve, a first valve and a second valve, and the economizer comprises a first heat exchange end and a second heat exchange end; the output end of the first valve and the input end of the second valve are both in pipeline connection with the indoor heat exchanger, the indoor heat exchanger is in pipeline connection with the compressor, the compressor is in pipeline connection with the outdoor heat exchanger, and the outdoor heat exchanger is connected with the input end of the first valve and is in pipeline connection with the output end of the second valve through a first heat exchange end; and the output end of the second valve is in pipeline connection with a second heat exchange end through an air supply expansion valve, and the second heat exchange end is connected with a compressor pipeline. The beneficial effects that the air displacement of the compressor is increased, an exhaust temperature is reduced, and a heating capacity of the compressor is improved are achieved.

Description

technical field [0001] The invention belongs to the technical field of vehicle air conditioners, and in particular relates to an air-supplementing and enthalpy-increasing air-conditioning system suitable for passenger cars. Background technique [0002] With the continuous improvement of the promotion of electric buses, their proportion in public transportation is also increasing. Operators are more and more anxious about the operating mileage of electric buses, and the demand for increasing the operating mileage is becoming more and more urgent. Since the air conditioner is a typical power-consuming part of the vehicle, it is particularly important to reduce the energy consumption of the air conditioner when the vehicle power is constant. For the battery at the current technical level, its power will be significantly attenuated in a low-temperature environment, so that when the compressor operates at a low evaporation temperature, the suction pressure will decrease signific...

AI Technical Summary

Problems solved by technology

For the battery at the current technical level, its power will be significantly attenuated in a low-temperature environment, so that when the compressor operates at a low evaporation temperature, the suction pressure will decrease significantly and the pressure ratio between the inlet and outlet of the compressor will increase, resulting in The performance of the compressor drops sharply and the heating capacity is insufficient, making it difficult for the system to work

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