Patent ID: 6019169
Filing Date: 2000-02-01
Classification: F28D,F28F,Y10S

Abstract:
Heat transfer device, particularly a charge air cooler in a stack construction, having a finned-tube block which is constructed of several layers of ducts for the coolant flowing through, which extend in parallel to one another, and of lamella-type corrugated fins which are in each case inserted between these layers and which, in the area of the ends of the ducts leading into the coolant tanks, each rest against supporting fins of end strips which are inserted between adjacent layers of ducts for forming the tube bottom,wherein the lateral surfaces of the end strips which rest against the ducts form exterior surfaces of lips projecting in a direction of the corrugated fins, tips of the lips not contacting the corrugated fins and their cross-section increasing uniformly toward a side facing away from the corrugated fins,wherein one groove respectively is formed between the lip and the supporting fin,wherein a wall of the groove which faces the supporting fin forms a parabolically curved surface, andwherein the width of the supporting fin amounts to approximately one third of the width of the end strip.