| 摘要 |
<p>PROBLEM TO BE SOLVED: To enhance efficiency in an outdoor heat exchanger while sufficiently discharging heat of cooling water for an engine.SOLUTION: When a differential pressure secure mode operation and a defrosting mode operation are performed at a heating operation, a control unit 70 makes an outdoor fan 60 reverse and actuates the outdoor fan 60 so that air flows from the side of a radiator 44 to the side of an outdoor heat exchanger 32. An air guide member may be provided, which guides the air generated by the outdoor fan 60 from the downstream side of the radiator 44 to the upstream of the outdoor heat exchanger 32. Also a heat exchanger may be provided, which performs heat exchange between cooling water on the side of the radiator 44 and coolant on the side of the outdoor heat exchanger 32.</p> |
