Heat exchanger, in particular a supercharging air cooler

Abstract

A heat exchanger is disclosed. The heat exchanger has a heat exchange assembly which defines first circulation channels for the circulation of a gas to be cooled and second circulation channels for the circulation of a cooling liquid, and two gas intake and gas outlet collectors, respectively, which are assembled on two open faces of the heat exchange assembly, respectively, in which the first circulation channels open. A first collector is crimped to the heat exchange assembly and a second collector is soldered or welded to the heat exchange assembly.

1 . A heat exchanger comprising:
 a heat exchange assembly which defines first circulation channels for the circulation of a gas to be cooled and second circulation channels for the circulation of a cooling liquid; and   two gas intake and gas outlet collectors, respectively, which are assembled on two open faces of the heat exchange assembly, respectively, in which the first circulation channels open,   wherein a first collector is crimped to the heat exchange assembly and the second collector is soldered or welded to the heat exchange assembly.   
     
     
         2 . The heat exchanger as claimed in  claim 1 , wherein the gas intake collector is crimped to the heat exchange assembly and the gas outlet collector is welded or soldered to the heat exchange assembly. 
     
     
         3 . The heat exchanger as claimed in  claim 1 , wherein the first collector which is crimped to the heat exchange assembly is produced by means of molding a plastics material or a metal material, such as an aluminum alloy. 
     
     
         4 . The heat exchanger as claimed in  claim 1 , wherein the second collector which is soldered or welded to the heat exchange assembly is produced from a metal material, such as an aluminum alloy. 
     
     
         5 . The heat exchanger as claimed in  claim 1 , wherein the two gas intake and gas outlet collectors are assembled on two opposing faces of the heat exchange assembly , respectively. 
     
     
         6 . The heat exchanger as claimed in  claim 1 , wherein the first collector which is crimped to the heat exchange assembly comprises a collector casing and a collection plate in which the first channels of the heat exchange assembly open, and the collector casing has an open face which is delimited by a peripheral rim which is held by means of crimping against the collection plate. 
     
     
         7 . The heat exchanger as claimed in  claim 6 , wherein the collection plate is generally in the form of a frame and comprises a generally rectangular peripheral edge which delimits a gas passage opening and which has a crimping rim which surrounds a recess for receiving the peripheral rim of the first collector which is crimped to the heat exchange assembly. 
     
     
         8 . The heat exchanger as claimed in  claim 1 , characterized in that it is produced in the form of a supercharging air cooler of a thermal engine of a motor vehicle, the first circulation channels serving to circulate the supercharging air to be cooled. 
     
     
         9 . The heat exchanger as claimed in  claim 8 , wherein the gas intake collector comprises a tube which is integrally molded, and the gas outlet collector has a supercharging air intake opening for the thermal engine of the vehicle. 
     
     
         10 . The heat exchanger as claimed in  claim 9 , wherein the gas outlet collector defines a gas collection space in which the first circulation channels open, and comprises an injection channel for recirculated exhaust gases and a plurality of injection holes for recirculated exhaust gases for the injection of recirculated exhaust gases into the gas collection space of the gas outlet collector. 
     
     
         11 . The heat exchanger as claimed in  claim 10 , wherein the gas outlet collector comprises an intake valve for the recirculated exhaust gases into the gas outlet collector.