Patent ID: 7717164

Claim:
A stacked plate heat exchanger for motor vehicles, comprising: trough-shaped stacking plates; and metal turbulence plates, wherein the trough-shaped stacking plates and the metal turbulence plates are stacked onto and into one another in an alternating fashion to form a block and each have first and second passage openings for forming distribution and collection ducts and are soldered to one another to form first and second flow ducts, wherein the metal turbulence plates forming tie rods between the stacking plates and the block are closed off by a base plate and a cover plate, wherein a thin intermediate metal plate, which has the hole pattern of the metal turbulence plate, is arranged between the uppermost metal turbulence plate and the cover plate and is soldered both to the metal turbulence plate and to the cover plate, wherein the stacking plates each have a substantially planar face and annular stamped formations, wherein the first passage openings are arranged in the substantially planar face and the second passage openings are arranged, such that they are raised, in the annular stamped formations and are at least partially closed off outwardly by means of the cover plate, wherein an outwardly directed stamped formation is arranged in the cover plate concentrically with respect to the first passage openings, and wherein an annular gap is left between the stamped formation and the thin intermediate metal plate.