The basic principle of refrigeration system

After the liquid refrigerant absorbs the heat of the object being cooled in the evaporator, Freezer Condenser vaporizes into low-temperature and low-pressure steam is sucked by the compressor, compressed into high-pressure and high-temperature steam, and then discharged into the condenser. ) Heat is released, condensed into a high-pressure liquid, is throttled into a low-pressure and low-temperature refrigerant by the throttle valve, and then enters the evaporator again to absorb heat and vaporize to achieve the purpose of circulating refrigeration. In this way, the refrigerant in the system completes a refrigeration cycle through the four basic processes of evaporation, compression, condensation, and throttling.

In the refrigeration system, the evaporator, condenser, compressor, and throttle valve are the four essential parts of the refrigeration system. Among them, the evaporator is the equipment that transports cold energy. The refrigerant absorbs the heat of the object to be cooled to achieve cooling. The compressor is the heart, which plays the role of inhaling, compressing, and transporting refrigerant vapor. The condenser is a device that emits heat and transfers the heat absorbed in the evaporator together with the heat converted by the compressor work to the cooling medium to take away. The throttle valve acts as a throttling and pressure reduction for the refrigerant, and at the same time controls and regulates the amount of refrigerant liquid flowing into the evaporator, and divides the system into two parts, a high-pressure side and a low-pressure side. In the actual refrigeration system, in addition to the above four major parts, there is often some auxiliary equipment, such as Cold Room Condenser, solenoid valve, distributor, dryer, collector, fusible plug, pressure controller, and other components. They are It is set up to improve the economy, reliability, and safety of operation.