| 摘要 |
When a power switching element (9b) brought into contact with a reverse-surface contact part (11i) of a suction refrigerant passage (13) is cooled by refrigerant that has been sucked in through a suction port (11c) and that is passing through the suction refrigerant passage (13), high-temperature, high-pressure refrigerant flowing in from a compression chamber (7a) to a suction chamber (7b) is prevented from flowing back by a check valve (15). Therefore, there is always low-temperature, low-pressure refrigerant in the suction refrigerant passage (13), and the power switching element (9b) can be efficiently cooled by the refrigerant in the suction refrigerant passage (13). |
