Patent ID: 6904958

Claim:
A heat exchanger having mounting members to which a blower is to be attached, comprising: a plurality of metallic tubes through which fluid flows in a fluid flow direction; a pair of metallic header tanks communicating with the plurality of tubes, each of the pair of header tanks being arranged at lengthwise opposite ends of the tubes and extending perpendicular to the lengthwise direction of the tubes, each of the pair of header tanks defining a rectangular cross section fluid chamber having a long side wall and a short side wall each of said header tanks being disposed such that said long side wall is generally parallel to said fluid flow direction and said short side wall is generally perpendicular to said fluid flow direction, concave and convex portions being formed in a first portion of the long side wall of the header tank by plastic deformation; a respective mounting member secured on said long side wall of each of the header tanks; and a reinforcement attached to each of the mounting members on the side of the mounting member in contact with the long side wall, for strengthening the long side wall surface.