Heat exchanger, especially a charge-air cooler for motor vehicles

Abstract

The invention relates to a heat exchanger, especially a charge-air cooler for motor vehicles, comprising flat tubes ( 9 ) with tube ends ( 9 a ), and collecting tanks ( 1 ) which are connected to tube plates ( 4 ), said tube plates ( 4 ) comprising openings ( 8 ) provided with long sides ( 8 a ) and short sides ( 8 b ) for receiving the tube ends ( 9 a ), in addition to edge strips ( 5, 6 ) and transition regions ( 12, 13 ) which are embodied in a groove-type manner and located between the short sides ( 8 b ) and the edge strips ( 5, 6 ), the tube ends ( 9 a ) being soldered in the openings ( 8 ). According to the invention, the transition regions ( 12, 13 ) comprise a reinforcing element.

1 . A heat exchanger, especially a charge-air cooler for motor vehicles, with flat tubes having tube ends, and with header boxes which are connected, especially soldered, to tube bottoms, the tube bottoms having orifices with longitudinal sides and narrow sides for receiving the tube ends, furthermore edge strips and transitional regions of channel-like design between the narrow sides and the edge strips, and the tube ends being soldered in the orifices, wherein the transitional regions have a reinforcement.  
   
   
       2 . The heat exchanger as claimed in  claim 1 , wherein the reinforcement is designed as a material thickening.  
   
   
       3 . The heat exchanger as claimed in  claim 1 , wherein the reinforcement is designed as a stiffening, especially as a bead.  
   
   
       4 . The heat exchanger as claimed in  claim 1 , wherein the reinforcement is designed as a profile strip which at least partially fills the transitional region and which is soldered to the tube bottom.  
   
   
       5 . The heat exchanger as claimed in  claim 4 , wherein the profile strips are produced in one piece with the header box.  
   
   
       6 . The heat exchanger as claimed in  claim 4 , wherein the profile strips are designed as insert strips.  
   
   
       7 . The heat exchanger as claimed in  claim 4 , wherein the orifices are designed as inwardly directed rim holes, and in that the profile strips have recesses which are adapted to the form of the narrow sides of the rim holes.  
   
   
       8 . The heat exchanger as claimed in  claim 1 , wherein the orifices are designed as outwardly directed rim holes.  
   
   
       9 . The heat exchanger as claimed in  claim 5 , wherein the orifices are designed as inwardly directed rim holes, and in that the profile strips have recesses which are adapted to the form of the narrow sides of the rim holes.  
   
   
       10 . The heat exchanger as claimed in  claim 6 , wherein the orifices are designed as inwardly directed rim holes, and in that the profile strips have recesses which are adapted to the form of the narrow sides of the rim holes.  
   
   
       11 . The heat exchanger as claimed in  claim 2 , wherein the orifices are designed as outwardly directed rim holes.  
   
   
       12 . The heat exchanger as claimed in  claim 3 , wherein the orifices are designed as outwardly directed rim holes.  
   
   
       13 . The heat exchanger as claimed in  claim 4 , wherein the orifices are designed as outwardly directed rim holes.  
   
   
       14 . The heat exchanger as claimed in  claim 5 , wherein the orifices are designed as outwardly directed rim holes.  
   
   
       15 . The heat exchanger as claimed in  claim 6 , wherein the orifices are designed as outwardly directed rim holes.  
   
   
       16 . The heat exchanger as claimed in  claim 7 , wherein the orifices are designed as outwardly directed rim holes.