Patent ID: 6953081

Claim:
A heating or air-conditioning system for a motor vehicle including at least one lightweight, stacked plate-type heat exchanger, comprising: a plurality of first and second stacked plate pairs, said pairs comprised in each case of two stacked plates which are comprised of relatively thin stamped plates and which form and define between them at least one first flow passageway for a first heat exchange medium; and a plurality of parallel second flow passageways for a second heat exchange medium, said second flow passageways being defined between two adjacent plate pairs, wherein the second flow passageways are formed in each case by one plate from adjacent plate pairs; wherein said second flow passageways terminate at an inflow surface for the second medium and at an outlet surface for the second medium, and said surfaces are arranged at an angle with respect to one another; and wherein the second flow passageways are shaped in the form of an arc extending from the inflow surface to the outflow surface.