Patent ID: 7891412

Claim:
A heat exchanger suitable as part of a heating, ventilation and/or air-conditioning device, particularly of an automotive vehicle, said heat exchanger comprising: a plurality of modules ( 14 , 100 ) stacked in a first direction, connected to an inlet pipe ( 22 , 82 , 101 ) and to an outlet pipe ( 24 , 84 , 102 ) for a first fluid and suitable for circulating said first fluid, characterized in that said modules comprise two series of distinct channels ( 137 , 138 , 139 ) suitable for receiving said first fluid and a second fluid, the second fluid being conveyed by at least a third pipe ( 91 , 104 , 105 ); and the plurality of modules ( 100 ) each being formed of three mutually joined plates, that is a first plate ( 108 ) turned toward a first end of the stack, a second plate ( 109 ) turned toward a second end of the stack and a third intermediate plate ( 110 ), the plates each extending, substantially along the same contour, in second and third directions substantially perpendicular to each other and perpendicular to the first direction, the modules being separated from each other, in at least one median region, in order to define intervals ( 106 ) between them for the passage of an air flow in the third direction, and the plates being stamped in order to define the channels ( 137 - 139 ) in each module for the circulation of the first and second heat transfer fluids in the second direction, respectively on either side of the intermediate plate ( 110 ), and having, in two end regions located on either side of said at least one median region, openings ( 116 , 117 , 124 , 125 , 127 , 130 , 131 , 132 , 136 ) for enabling the various modules to receive the first and second fluids, the plates being connected together to be sealed to the fluids around the openings, and at their periphery ( 111 ) in each module; each plate having, in a first of said end regions, first and second openings ( 116 , 117 , 136 ) for the circulation of the first fluid in the two directions respectively, and a third opening ( 130 , 131 , 132 ) for the circulation of the second fluid in the first direction, and, in the second of said end regions, a fourth opening ( 124 , 125 , 127 ) for the circulation of the second fluid in the second direction.