Abstract: A condenser for an air conditioning circuit is disclosed. The condenser has a housing which is connected to a refrigerating fluid reserve by a flange having cylinder shaped tubes, the housing receiving a first heat exchange portion between the refrigerating fluid and a cooling liquid, the first portion being configured to convey the refrigerating fluid to the refrigerating fluid reserve, and a second heat exchange portion which produces a heat exchange complement between the refrigerating fluid and the cooling liquid at the outlet of the refrigerating fluid reserve.

Abstract: The invention relates to a heat exchanger (1), especially an exchanger for the air-conditioning system of a vehicle, allowing heat exchange between first (F1) and second (F2) fluids, said exchanger (1) comprising a plurality of tubes (3) for the circulation of the first fluid (F1), which are stacked one on top of the other, and at least one collector (5) comprising a collector plate (7), said collector plate (7) comprising openings (13) for inserting the ends (3a) of tubes (3), characterized in that said ends (3a) of said (3) are assembled at least two by two in the insertion openings of the collector plate (7).

Abstract: Air conditioning device (1) with transcritical operating cycle, the device comprising a circuit (4) conveying a refrigerant (5) and successively connecting: the outlet (6) of a compressor (7); a gas cooler (8); the cold circuit (9) of an intermediate cooler (10); an expansion valve (11); a second exchanger (12) having a volume (31, 71) for the circulation of a coolant (21) in a heat-exchange relationship with the refrigerant (5); the inlet (13) of the hot circuit (14) of the intermediate cooler (10); the air conditioning device (1) being characterized in that the second exchanger of type (12) comprises an expansion volume for the coolant (21).

Abstract: The invention relates to a heat exchanger (1), especially an exchanger for the air-conditioning system of a vehicle, allowing heat exchange between first (F1) and second (F2) fluids, said exchanger (1) comprising a plurality of tubes (3) for the circulation of the first fluid (F1), which are stacked one on top of the other, and at least one collector (5) comprising a collector plate (7), said collector plate (7) comprising openings (13) for inserting the ends (3a) of tubes (3), characterised in that said ends (3a) of said (3) are assembled at least two by two in the insertion openings of the collector plate (7).

Abstract: A condenser for an air conditioning circuit is disclosed. The condenser has a housing which is connected to a refrigerating fluid reserve, the housing receiving a first heat exchange portion between the refrigerating fluid and a cooling liquid, the first portion being configured to convey the refrigerating fluid to the refrigerating fluid reserve, and a second heat exchange portion which produces a heat exchange complement between the refrigerating fluid and the cooling liquid at the outlet of the reserve.