Working principle of condenser and evaporator in air conditioning: compressor, evaporator, condenser and expansion valve. In addition, there are auxiliary parts: liquid tank, one-way valve, sight glass, fan governor, high and low pressure detection switch, drying filter, pipeline solenoid valve, etc.

  When working, the compressor inhales refrigerant steam, compresses it into high pressure and high temperature steam and then discharges it into the condenser. In the condenser, it releases heat to the cooling medium (water or air), condenses into high-pressure liquid, throttles to low-pressure and low-temperature refrigerant by throttle valve, and enters the evaporator again to absorb heat and vaporize, so as to achieve the purpose of circulating refrigeration.