| 摘要 |
PROBLEM TO BE SOLVED: To prevent damage of a power supply device by suppressing a rise in a temperature of the power supply device in starting a compressor.SOLUTION: An air conditioner (1) comprises: a refrigerant circuit (1A) in which a compressor (2), a condenser, an expansion mechanism (4) and an evaporator (5) are connected to perform a refrigeration cycle; a power supply device (P) controlling a driving motor (2b) of the compressor (2); and a refrigerant cooling portion (19) cooling the power supply device (P) by a liquid refrigerant of the refrigerant circuit (1A). The air conditioner (1) further comprises a medium control portion (7a) for operating a condenser fan (3a) when a refrigerant differential pressure of the compressor (2) reaches a prescribed value at which oil supply of the compressor (2) is enabled, after starting the compressor (2). |
