| 摘要 |
<p>A refrigeration cycle constitutes a closed cycle for circulating a refrigerant therein and includes at least a variable capacity compressor (22), an outdoor heat exchanger (28), an expansion valve (26), and an indoor heat exchanger (25). The indoor heat exchanger (25) is provided with a room temperature sensor (36) and an indoor fan (24). A floor heating panel (29) is connected in parallel with the indoor heat exchanger (25). The panel (29) is provided with a floor temperature sensor (37). A flow control valve (30) is arranged in a refrigerant upstream side of the panel (29) at a heating operation. A first controller (38) controls the compressor, the fan (24), and the valve (30) in a first state at the start of a heating operation to simultaneously start air heating by the indoor heat exchanger (25) and floor heating by the panel (29). A second controller (38) controls the compressor (22), the fan (24), and the valve (30) in a second state when a detection output from the room temperature sensor (36) reaches a preset value, thereby maintaining a room temperature and increasing a floor temperature. A third controller (38) controls at least one of the compressor (22) and the valve (30) in a third state when a detection output from the floor temperature sensor (37) reaches a preset value, thereby maintaining the floor temperature and controls at least one of the compressor (22) and the fan (24) in a fourth state, thereby controlling the room temperature to a predetermined value.</p> |
