Reciprocating refrigeration compressor is a more commonly used in the refrigeration industry, chillers, but for specific categories of piston refrigeration compressors we do know is more rare, and therefore trillion Xiao Ke snow on you summarize some of reciprocating refrigeration The specific classification of compressors will give you a detailed introduction to these basic product knowledge.
In the industrial refrigeration industry, the more commonly used refrigeration compressors are screw, piston and centrifugal. Piston compressors are mostly used in tank-sealed chillers (called water-cooled chillers). The compressors are classified into three types: fully enclosed, semi-closed and open.
1. Open type compressor: It is characterized in that the power input end of the shaft extends out of the body, and is connected to the motor by a transmission device such as a coupling or a pulley. The crankshaft extends out of the body and is sealed by a shaft sealing device. Since it is impossible to achieve complete sealing of the shaft sealing device, leakage of refrigerant and lubricating oil in the chiller and infiltration of outside air are inevitable. Therefore, this type of compressor is not suitable for small automatic industrial refrigeration chillers without small amount of filling and without air separator.
2. Semi-hermetic compressor: It is characterized in that the body and the motor housing are bolted and sealed with a gasket to form a closed fuselage. The motor is mounted directly on the crankshaft of the compressor. The sealability of this compressor is better than that of the open type, which reduces or even avoids leakage.
3. Fully enclosed compressor: It is characterized in that the body and the motor are jointly installed in a closed casing, and the joints of the casing are welded. From the appearance, only the suction, exhaust pipe and motor terminals, the compressor is the best.
Regardless of the type of piston refrigeration compressor used, this type of chiller can be collectively referred to as a piston chiller and is one of the most commonly used models in various industries.
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