The refrigerator is the core equipment of refrigeration. Only by converting electrical energy into mechanical work and compressing the low-temperature and low-pressure gas refrigerant into high-temperature and high-pressure gas can the refrigeration cycle be guaranteed. The following is the high-low temperature test chamber manufacturer to tell you the refrigerator For the classified content, please visit:
Let me first talk about one less used in the environmental testing industry: centrifugal refrigerators, which rely on the role of centrifugal force to continuously compress the inhaled gas, with a maximum cooling capacity of 30,000KW, used in large central air conditioners and large storage refrigeration equipment Medium, stable operation, high performance, long life, large cooling capacity, stepless adjustment.
There is also a volumetric refrigerator, which is relatively familiar. The working principle is to change the volume of the working chamber and compress the periodically sucked quantitative gas. Reciprocating piston refrigeration compressor: reciprocate the piston to change the work of the cylinder Volume, according to the external structure is divided into: fully enclosed and semi-enclosed.
Fully enclosed: The cooling capacity is less than 60KW, which is mostly used in air conditioners and small refrigeration equipment. The drive motor and moving parts are enclosed in the same space. The structure is compact, the sealing is good, and the noise is low. But the power is small and it is not easy to maintain;
Semi-closed: The cooling capacity is 60 ～ 600KW, which can be used in various air conditioners and refrigeration equipment. The crankcase body and the motor casing together form a closed space. It has a stable working life, a long cooling capacity, and can be used in a variety of working conditions. Maintenance, but the noise is slightly higher. Divided into single-stage compression type (conventional type, disc valve type, unloading type, communication type) and two-stage compression type.
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