MOTOR VEHICLE AIR-CONDITIONING CIRCUIT AND RELATED MANAGEMENT METHOD

The present invention relates to a reversible air-conditioning circuit () comprising: •a main loop (A) comprising a compressor () and a water condenser () jointly connected to an auxiliary circuit, a first expansion device (), an external evaporator-condenser (), a second expansion device (), and an evaporator (), •a first bypass branch (B) comprising an internal condenser (), the first bypass branch (B) connecting a first junction point () arranged downstream from the water condenser () to a second junction point () arranged upstream from the second expansion device (), •a second bypass branch (C) connecting a third junction point () arranged downstream from the external evaporator-condenser () to a fourth junction point () arranged downstream from the evaporator (), and •a third bypass branch (D) connecting a fifth junction point () arranged downstream from the third junction point () to a sixth junction point () arranged downstream from the first junction point ().