The automobile air-conditioning compressor is the heart of the air-conditioning system and the power source for the refrigerant to circulate in the system. When the auto ac compressor works, it sucks in low-temperature, low-pressure liquid refrigerant, and discharges the high-temperature, high-pressure gaseous refrigerant from the discharge end. The car compressor is only responsible for compressing and transporting refrigerant vapor in the air conditioner, and cannot refrigerate itself. No leakage, no abnormal noise, and sufficient pressure are qualified products. Compressors are divided into two types: immutable displacement and variable displacement. According to different working principles, air-conditioning compressors can be divided into fixed displacement compressors and variable displacement compressors. According to different working methods, compressors can generally be divided into reciprocating and rotary types. Common reciprocating compressors include crankshaft connecting rod type and axial piston type, and common rotary compressors include rotary vane type and scroll type.

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