| 摘要 |
<p>A vehicle heating and cooling device (1) is provided with a first refrigerant circulation path wherein refrigerant discharged from a compressor (2) during cooling operation and during heating operation can circulate in such a way as to return to the compressor (2) via an evaporator (7), a second refrigerant circulation path wherein refrigerant discharged from the compressor (2) during heating operation can circulate in such a way as to return to the compressor (2) via an outdoor heat exchanger (5), and a third refrigerant circulation path wherein refrigerant discharged from the compressor (2) during cooling operation can circulate in such a way as to return to the compressor (2) via the outdoor heat exchanger (5) and the evaporator (7) in succession. When the second refrigerant circulation path is to be opened, a control section (100) controls the opening degree of a first proportional valve (41) and a second proportional valve (42), thereby adjusting the ratio of the flow rates of the refrigerant which flows from the compressor (2) into the outdoor heat exchanger (5) and the evaporator (7).</p> |
