Patent ID: 6142217
Filing Date: 2000-11-07
Classification: F28D,F28F,Y10S

Abstract:
A flat tube heat exchanger for motor vehicles having a top end and a bottom end, a deflection header disposed over the bottom end, an inlet/outlet header having an inlet and an outlet disposed over the top end, a plurality of flat tubes extending between the deflection header and the inlet/outlet header, the inlet/outlet header further comprising:a tube bottom having, for each said tube, a slit;a cap defining with the tube bottom a header chamber;a collar extending from each said slit into the header chamber; andat least one partition extending down from the cap to the tube bottom,wherein each said tube has a free end projecting through the collar and into the header chamber as a tulip-shaped overhang,wherein the partition includes a plurality of recesses adapted to overgrip the free ends of the flat tubes to secure the flat tubes to the tube bottom, and to form the tulip-shaped overhang when pressed with compensation for tolerances into the free ends of the flat tubes.