Currently commonly used compressors mainly include piston compressors, scroll compressors, screw compressors and centrifugal compressors:
Piston refrigeration compressors: mostly medium-sized (standard refrigeration capacity 60~600KW) and small-sized (less than 60KW), but due to their high noise and low efficiency, they are prone to failures. Air conditioners are not used much, but many cold storages use half Hermetic piston compressor.
Scroll refrigeration compressors: currently mainly used in small refrigeration systems, and are widely used in small systems such as household air conditioners and commercial VRVs;
Screw-type refrigeration compressor: It has a series of unique advantages such as simple structure, high reliability, convenient operation and maintenance, and mature technology. It has been widely used in refrigeration, air conditioning and various technological processes;
Centrifugal refrigeration compressor: simple and compact structure, few moving parts, reliable work, durable and low operating cost, generally suitable for refrigeration systems larger than 500RT, and can achieve stepless adjustment, so that the load of the unit is in the range of 30% to 100% Work within