| 摘要 |
<p>The present invention relates to an air-conditioning device (1) for a motor vehicle including a coolant circuit (3; 51) comprising a compressor (5), a downstream branch of the circuit including a first heat exchanger (7) and a first expansion member (11) arranged downstream from the first heat exchanger (7), and an upstream branch of the circuit including a second heat exchanger (15), a second expansion member (23) arranged upstream from the second heat exchanger (15), and an accumulator (17) arranged downstream from the second heat exchanger (15), the coolant circuit (3; 51) further including a third heat exchanger (37) capable of reversibly functioning and a switchable connection system for selectively connecting the third heat exchanger (37) to the upstream and/or downstream branch of the circuit. The switchable connection system includes a switching means (27) connected to a first header of the third heat exchanger (37), to the downstream branch, and to the upstream branch of the circuit, and a third expansion member (41) connected to a second header of the third heat exchanger (37), to the first expansion member (11), and to the second expansion member (23).</p> |
