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(11) | EP 0 709 641 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Heat exchanger for vehicles and method for the assembly of a heat exchange matrix |
(57) A heat exchanger for vehicles, in particular a condenser for air-conditioning units.
The exchanger comprises a stack of substantially flat fins (12) and a plurality of
tubes (14) fixed to the fins (12) by means of mechanical expansion. Each tube (14)
has an oblong transverse section and a stiffening septum (18) which extends along
the minor axis of the transverse section of the tube (14) and which is formed integrally
with the wall of the tube (14). |