Heat Exchanger Having A Reinforced Collector

Abstract

Disclosed is a heat exchanger comprising a heat exchange body 2, at least one cover 4 and a manifold 3 connecting the cover 4 to the heat exchange body 2 with the aid of a crimping device that projects from the manifold 3 and is folded over the cover 4, the heat exchange body 2 comprising a plurality of tubes 6 a, 6 b that are able to channel a first fluid, the manifold 3 comprising a base plate 24 surrounded by an edge 13 for fixing the cover 4, wherein the base plate 24 and the fixing edge 13 delimit a housing 26 for receiving a heel 15 of the cover 4, the fixing edge 13 being formed by a double-thickness wall 16, one end 17 of which is fixed to at least one tube 6 a, 6 b.

1 . A heat exchanger comprising a heat exchange body, at least one cover and a manifold connecting the cover to the heat exchange body with the aid of a crimping device that projects from the manifold and is folded over the cover, the heat exchange body comprising a plurality of tubes configured to channel a first fluid, the manifold comprising a base plate surrounded by an edge for fixing the cover, wherein the base plate and the fixing edge delimit a housing for receiving a heel of the cover, the fixing edge being formed by a double-thickness wall, one end of which is fixed to at least one tube. 
     
     
         2 . The exchanger as claimed in  claim 1 , wherein the end of the double-thickness wall is fixed to a plurality of tubes. 
     
     
         3 . The heat exchanger as claimed in  claim 2 , wherein a tube comprises two longitudinal walls that are joined together by two lateral walls, the fixing edge comprising a band transverse to the base plate and fixed to at least one of the lateral walls of at least one tube over a length of at least 1 mm. 
     
     
         4 . The exchanger as claimed in  claim 1 , wherein the end is fixed to a longitudinal wall of an end tube of the heat exchange body. 
     
     
         5 . The exchanger as claimed in  claim 4 , wherein the heat exchange body is laterally terminated by a plate installed at a distance of at least 0.1 mm from the double-thickness wall. 
     
     
         6 . The exchanger as claimed in  claim 5 , wherein a dissipation device is interposed between the plate and the end tube, the dissipation device being at a distance of at least 0.1 mm from the double-thickness wall. 
     
     
         7 . The exchanger as claimed in  claim 6 , wherein a distance of at least 2 mm is provided between the base plate and the end of the double-thickness wall. 
     
     
         8 . The exchanger as claimed in  claim 1 , wherein the base plate comprises at least one opening in which one end of a tube is housed, said opening being bordered by a collar turned toward the heat exchange body. 
     
     
         9 . The exchanger as claimed in  claim 1 , comprising a seal fitted in the receiving housing at least between the heel of the cover and the fixing edge. 
     
     
         10 . The exchanger as claimed in  claim 1 , wherein the double-thickness wall is formed by a first wall and a second wall brazed to the first wall. 
     
     
         11 . The exchanger as claimed in  claim 10 , wherein the double-thickness wall comprises at least one corner at which a mechanical reinforcement device is formed. 
     
     
         12 . The exchanger as claimed in  claim 11 , wherein the mechanical reinforcement device is a chamfer formed at the corner of the first wall. 
     
     
         13 . The exchanger as claimed in  claim 11 , wherein the mechanical reinforcement device is a fillet formed at the corner of the second wall, the fillet being formed opposite the chamfer. 
     
     
         14 . The exchanger as claimed in  claim 12 , wherein the first wall comprises a first strip forming a base of the housing and a first side wall laterally delimiting the housing, the first strip and the first side wall being connected by the chamfer. 
     
     
         15 . The exchanger as claimed in  claim 14 , wherein the second wall comprises a second strip brazed to the first strip and a second side wall brazed to the first side wall, the second strip and the second side wall being connected by a fillet at a distance from the chamfer. 
     
     
         16 . The exchanger as claimed in  claim 10 , wherein the end comprises a bend positioned such that one face of the second wall is brazed to the tube. 
     
     
         17 . The heat exchanger as claimed in  claim 10 , wherein the crimping device comprises a plurality of crimping tabs projecting from the first wall.