| 摘要 |
<p>1. A heating and ventilating installation for an automotive vehicle, comprising a conduit (10) for the supply of air from outside, dividing into a first conduit (12) which exhausts into the passenger compartment of the vehicle through fresh air outlets (14), and a second conduit (18) in which is disposed a heat exchanger (20) for the heating of the air, the second conduit exhausting into the passenger compartment through warm air outlets (24), a first flap valve (40) mounted in the first conduit (12) for regulating the flow of fresh air passing through it, a port (26) connecting the second conduit downstream of the heat exchanger (20) to the first conduit (12), and a second flap valve (30) for opening and closing this port, the first flap valve (40) being mounted in the first conduit (12) upstream of the port (26), characterised in that the second flap valve (30), when in its position for opening the port (26), delimits in the second conduit (18) a third conduit (36) which leads to the port (26) and a fourth conduit (38) which leads to the warm air outlets (24).</p> |
