FLANGE JOINING STRUCTURE OF HEAT EXCHANGER

摘要

PROBLEM TO BE SOLVED: To facilitate positioning of a flange 8 in a casing body 3 that accommodates a core 2 therein, and improve brazing strength.SOLUTION: A root part of a burred opening 5 of a casing body 3 is formed into a cross section R. A flange 8 is overlaid on the casing body 3 via a seat part 10 of a lid member that is thicker than a radius of curvature of the cross section. An inner periphery of a connection opening 7 is joined to an outer periphery of the burred opening 5 without any gap.SELECTED DRAWING: Figure 1