| 摘要 |
A casing (31) contains a compression mechanism (50) for compressing refrigerant, an expansion mechanism (60) for expanding refrigerant, and a rotary shaft (40) connecting the compression mechanism (50) and the expansion mechanism (60). A heat insulator (90) is provided which partitions the internal space of the casing (31) into a first space (48) in which the expansion mechanism (60) is placed and a second space (49) in which the compression mechanism (50) is placed. The heat insulator (90) is passed through by the rotary shaft (40). An elastically deformable O-ring (92) seals a clearance between the outer periphery of the heat insulator (90) and the inner periphery of the casing (31). |
