Patent ID: 8061416
Filing Date: 2011-11-22
Classification: F28D,F28F,Y10S

Abstract:
1. A heat exchanger for motor vehicles, the heat exchanger being formed from interconnected plates, there being formed between the plates cavities which are closed off outwardly and through which a first and a second medium flow alternately in each case via at least one inflow line and outflow line, the plates being profiled in such a way that, between the respective profiles of the plates, contact points occur, in the region of which the plates are fastened to one another, wherein the profiles of the plates and their contact points are designed in such a way that the flow, formed between the plates, of the first and the second medium from the corresponding inflow line to the corresponding outflow line does not run rectilinearly, wherein the plates have a recurring wavy profile which extends essentially transversely with respect to the main throughflow direction (H), wherein the plates have a bent edge, the edges of adjacent plates bearing one against the other and being connected to one another by brazing; and wherein between the end of the wavy profile and the edge, a profile-free bending portion is formed, the width of which is smaller than 2 mm and is determined in such a way that, during the brazing of the plates, a throughflow of medium in the bending portion is reduced or essentially prevented.