| 摘要 |
<p>A vehicle heating, ventilation and air conditioning system according to an aspect of the present invention comprises: a compressor that compresses and discharges a coolant; an external heat exchanger that is placed outside a vehicle, functions as an external condenser to radiate the coolant during an air cooling operation, and functions as an external evaporator to evaporate the coolant during an air heating operation; an internal evaporator that is placed inside the vehicle and evaporates the coolant; and a proportional valve (34) that includes a first proportional valve (105) and a second proportional valve (106) configured to adjust the respective opening degrees of a plurality of coolant passages composing a coolant circulation passage, which connects the compressor, the external heat exchanger, and the internal evaporator, a shared body (104) housing the proportional valves, a shared motor unit (102) configured to electrically adjust the opening degrees of the proportional valves.</p> |
