Heat exchanger, in particular a booster air radiator for a motor vehicle
First Claim
1. A heat exchanger of the type comprising a metal header plate which has a wall in which there are holes suitable for receiving the ends of tubes in a bank, the wall of the header plate being configured in such a way as to form collars around holes for the purpose of a connection with the tubes by brazing, wherein the wall of the header plate has a localised thinning (A) in a chosen area surrounding each collar to allow an axial movement of the collar with respect to the rest of the header plate under the effect of variations in the length of the tube arising from differences in thermal expansion.
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Accused Products
Abstract
The heat exchanger of the invention comprises a header plate which has a wall in which there are holes suitable for receiving the ends of tubes in a bank, the wall of the header plate forming collars around holes and having a localised thinning (A) in a chosen area surrounding each collar to allow an axial movement of the collar with respect to the rest of the header plate under the effect of variations in the length of the tube arising from differences in thermal expansion. Application notably to exchangers for booster air for turbocharged engines in motor vehicles.
19 Citations
8 Claims
- 1. A heat exchanger of the type comprising a metal header plate which has a wall in which there are holes suitable for receiving the ends of tubes in a bank, the wall of the header plate being configured in such a way as to form collars around holes for the purpose of a connection with the tubes by brazing, wherein the wall of the header plate has a localised thinning (A) in a chosen area surrounding each collar to allow an axial movement of the collar with respect to the rest of the header plate under the effect of variations in the length of the tube arising from differences in thermal expansion.
Specification