The dehumidifier is also called the wetting machine, the moisture machine, can also be known as a humidity regulator, the dehumidifier consists of a compressor, a heat exchanger, a fan, a waterher, a housing and controller, and its working principle is: In the air pumping machine, through the heat exchanger, the moisture in the air is condensed into a water bead, which is turned into a dry air discharge machine, and the indoor humidity is lowered.

The refrigeration system of the cryogenic dryer is compressed, consisting of four basic components such as refrigeration compressors, condenser, evaporator, expansion valve. They are sequentially connected in line, form a closed system, and the refrigerant constantly circulates flows in the system, and the state changes and heat exchange with compressed air and cooling media.

The amount of water vapor in the compressed air is determined by the temperature of the compressed air: reducing the temperature of the compressed air while maintaining the compressed air pressure, reducing the water vapor content in the compressed air, while the excess water vapor will condense A liquid. The cold dryer uses this principle to dry compressed air. Therefore, the cold dryer has a refrigeration system.

The refrigeration compressor inhales the low pressure (low temperature) refrigerant in the evaporator into the compressor cylinder, the refrigerant vapor is compressed, pressure, and the temperature is increased simultaneously; the high-pressure high temperature refrigerant steam is pressed to the condenser, in the condenser, The refrigerant steam having a higher temperature is heat exchange with a lower temperature of the cooling water or air, and the heat of the refrigerant is tapered by water or air, and the refrigerant steam becomes a liquid. This part of the liquid is then delivered to the expansion valve, flowing into a low temperature and low pressure liquid through the expansion valve festival; into the evaporator; low temperature, low pressure refrigerant liquid absorbs heat of the compressed air (commonly known as "evaporation") And the compressed air is condensed and condensed out of a large amount of liquid water; the refrigerant steam in the evaporator is sucked away by the compressor so that the refrigerant is compressed, condensed, throttled, and evaporated in the system. Completed a loop.