What are the common types of constant displacement compressors?

Common types of constant displacement compressors include scroll compressors. Scroll compressors are one of the most widely used constant displacement compressors currently available. Additionally, although reciprocating compressors are generally considered variable displacement compressors, they can also achieve constant displacement. Therefore, one of the main types of constant displacement compressors is the scroll compressor, while the reciprocating compressor can also be considered an option for constant displacement compressors.