Patent ID: 8333234

Claim:
A heating, ventilation and/or air-conditioning installation for a motor vehicle, said installation comprising: a casing ( 1 ) comprising side walls ( 18 , 19 ) delimiting a heating channel ( 2 ); and a heat exchanger ( 3 ) installed in said heating channel ( 2 ) and including an air inlet face ( 12 ) and an air outlet face ( 13 ) spaced from each other and at least one side face ( 16 , 17 ) capped with a radiator tank ( 4 ) extending longitudinally in a sliding direction along which said heat exchanger ( 3 ) slides during installation into said casing ( 1 ); at least one of said walls ( 18 , 19 ) of said casing ( 1 ) defining a housing receiving said radiator tank ( 4 ) along said sliding direction; and said housing including a primary part ( 21 , 22 , 23 , 24 ); wherein said radiator tank ( 4 ) includes a secondary protruding part ( 25 , 26 , 27 , 28 ) received in said primary part ( 21 , 22 , 23 , 24 ) to define a duct ( 29 , 30 ) therebetween; said secondary protruding part ( 25 , 27 ) protruding transversely to said inlet face ( 12 ) and/or said outlet face ( 13 ); said radiator tank ( 4 ) and said housing being spaced from each other and shaped so as to define together said duct ( 29 , 30 ) constraining an air flow to change direction at least three times so that the circulation of said air flow is limited in the whole of said duct ( 29 , 30 ).