| 摘要 |
When an expansion valve that can be fully closed is employed, in some cases it is not possible to detect that the valve is fully closed and that a refrigerant circuit is closed. The air conditioner (1) of the present invention comprises an indoor heat exchanger (14) that has an auxiliary heat exchanger (20) and a main heat exchanger (21) that is arranged on the downstream side of the auxiliary heat exchanger (20). During operation in a predetermined dehumidifying operation mode, all of the liquid refrigerant supplied to the auxiliary heat exchanger (20) evaporates partway through the auxiliary heat exchanger (20). As a result, only a portion of the upstream side of the auxiliary heat exchanger (20) is an evaporation region, and the area on the downstream side of the evaporation region for the auxiliary heat exchanger (20) is a superheating region. In addition, an evaporation temperature sensor (30) that detects evaporation temperature is arranged on the downstream side of an expansion valve (13) for an outdoor unit (3). |
