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1.空调系统结构及原理工程机械空调系统一般由压缩机、冷凝器、干燥过滤器、膨胀阀、蒸发器和离心风机等组成,如图1所示。空调系统制冷时,由压缩机将低温、低压的制冷剂(R134a)蒸汽,压缩成高温、高压的蒸汽。高温、高压蒸汽通过室外侧的风冷式冷凝器放出热量,冷凝为高压饱和液体,然后经过膨胀阀节流降
1. The structure and principle of air conditioning system Construction machinery air conditioning system generally consists of compressor, condenser, drying filter, expansion valve, evaporator and centrifugal fan and other components, shown in Figure 1. When the air conditioning system is cooling, the compressor will be low temperature, low pressure refrigerant (R134a) steam, compressed into high temperature, high pressure steam. High temperature, high pressure steam through the outdoor side of the air-cooled condenser heat, condensed into high-pressure saturated liquid, and then through the expansion valve throttling down