REFRIGERANT COMPRESSOR AND HEAT PUMP DEVICE

摘要

The efficiency of a compressor is increased by reducing pressure losses at an intermediate connection section for a multiple-stage compressor and in a discharge muffler space in a single-stage twin compressor, etc. Two connection flow paths for connecting to each other a high-stage compression section (20) and a discharge muffler space (31), into which a refrigerant compressed by a low-stage compression section (10) is discharged, are provided so as to penetrate through a low-stage compression section (10). The discharge muffler space (31) is formed in an annular shape, and a communication opening of the connection flow path, said communication opening communicating with the discharge muffler space (31), is disposed on one side of the discharge muffler space (31), and as a result, the refrigerant is circulated in the annular low-stage discharge muffler space (31) in a fixed direction.