Internal suction and discharge valves are found in which type of refrigeration compressor?

Internal suction and discharge valves are characteristic components of a reciprocating compressor. In this type of compressor, the valves play a crucial role in regulating the flow of refrigerant into and out of the compression chamber.

During the compression cycle, the suction valve opens to allow the refrigerant vapor to enter the cylinder as the piston moves downwards. When the piston moves upwards, the discharge valve opens to release the compressed refrigerant vapor into the system. This sequential operation of the internal valves is essential for maintaining efficiency and proper functioning of the compressor, allowing for the effective compression of gases in various refrigeration applications.

In contrast, rotary and scroll compressors typically rely on different mechanisms for refrigerant flow and do not utilize internal suction and discharge valves in the same manner. Centrifugal compressors, on the other hand, use a different principle of operation involving impellers and do not have internal valves similar to those found in reciprocating designs. Understanding these differences in design and function helps clarify why the reciprocating compressor is associated with internal suction and discharge valves.