Patent ID: 7237605
Filing Date: 2007-07-03
Classification: F28D,F28F

Abstract:
1. A heat exchanger comprising: a tank formed of a resin; a core plate hermetically fixed to an open end face of said tank through a seal member; and a core portion having an end portion thereof in a longitudinal direction (X) fitted and bonded into an insertion hole of said core plate, and formed by stacking a plurality of tubes communicating with the inside of said tank; said core plate constituting a bottom surface of an internal space of said tank on the side of said core portion; a push surface in said core plate for pushing said seal member towards said tank being so shaped as to protrude towards the center of said core portion with respect to said bottom surface; wherein: a projection portion protruding from said bottom surface towards the center of said core portion is formed in a formation region of said insertion hole of said core plate, and a bond portion between said tubes and said core plate is arranged closer to the center of said core portion than to said bottom surface.