| 摘要 |
An air conditioner (1): is provided with a compressor (21), an outdoor heat exchanger (23), indoor heat exchangers (42a, 42b), and a refrigerant circuit (10) having a stored-heat heat exchanger (28) that exchanges heat between a refrigerant and a thermal storage material; and is capable of performing a heat storage operation, and simultaneously performing a stored-heat utilization operation and a heating operation during a defrosting operation. In the air conditioner (1), indoor units (4a, 4b) provided with indoor expansion valves (41a, 41b) have indoor-side control units (48a, 48b) that determine the positions of the indoor expansion valves (41a, 41b) when the heating operation alone is being performed. An outdoor unit (2) provided with an outdoor expansion valve (24) has an outdoor-side control unit (38) that determines the position of the outdoor expansion valve (24) when the heating operation alone is being performed, and determines the positions of the indoor expansion valves (41a, 41b) and the position of the outdoor expansion valve (24) when the heating operation is being performed for a defrosting operation accompanying the stored-heat utilization operation. |
