| 摘要 |
A compressor (20) and an expander (30) are installed in the refrigerant circuit (11) of an air conditioner (10). In the compressor (20), the refrigerant compressed by a compressing mechanism (21) is discharged into the internal space of a compressor casing (24). In the compressor (20), the refrigerator oil collected in the bottom of the compressor casing (24) is supplied to the compressing mechanism (21). The refrigerator oil collected in the bottom of the compressor casing (24) is introduced directly into the expanding mechanism (31) of the expander (30) through an oil supply pipe (41). |
