| 摘要 |
PURPOSE:To carry out cooling/heating without need for driving a traveling engine during the stoppage of a vehicle by driving the refrigerant compressor of a refrigerating cycle with an auxiliary engine to carry out cooling while feeding the cooling water of the auxiliary engine to a hot water type heat exchanger to carry out heating. CONSTITUTION:At the time of cooling, the refrigerant compressor 5 of a refrigerating cycle 4 is driven by means of an auxiliary engine 2 via an electromagnetic clutch 3. A compressed refrigerant is circulated through a refrigerant condenser 7, a receiver 8, a drier 9, an expansion valve 10, a refrigerant evaporator 11, and the refrigerant compressor 5 in order. At this time, air cooled by the refrigerant evaporator 11 is sent into a vehicle room by means of a blower fan 14. At the time of heating, on the other hand, cooling water is fed from the auxiliary engine 2 into a heater core (hot-water type heat exchanger) 6. At this time, the cooling water is sent under pressure by means of a water pump 21 while being heated by a preheater 22. Thereby, heat exchange can be carried out between the cooling water and air, to send heated air into a vehicle room by means of the blower fan 14. |
