What is the structure of the refrigerated truck refrigeration unit? The compression refrigeration unit is mainly composed of a refrigeration compressor, a condenser, a throttle valve (or expansion valve) and an evaporator.
These devices are assembled together and are small in size. The compressor is the main engine of the refrigerating truck refrigeration unit, and the low-pressure refrigerant gas from the evaporator is compressed by the piston to become a high-temperature and high-pressure gas, which is discharged to the condenser to liquefy the gas in the condensation gas.
It can be seen that the function of the compressor is to constantly draw in the refrigerant gas from the evaporator, and continuously evaporate and compress the refrigerant and then send it to the condenser, while maintaining the pressure difference between the suction end and the exhaust end, driving the refrigerant in the closed system. The flow is continuously circulated in one direction, and the main components of other refrigerating truck refrigeration units are used to complete the phase change.
The condenser of the refrigerated and insulated car is a kind of heat exchanger. Water or air is often used as the cooling medium, so that the heat evaporated by the refrigerant is transferred to the cooling water or air, so that the high temperature and high pressure refrigerant vapor is condensed under a certain pressure. Into a liquid.
