Patent ID: 7523782

Claim:
A heat exchanger, comprising: a first end tank; a second end tank opposite the first end tank; a plurality of first tubes in fluid communication with the first and second end tanks; a plurality of second tubes in fluid communication with the first and second end tanks; a plurality of fins disposed between the first and second tubes, with the first and second tubes and the fins being generally co-planar relative to each other; and at least one single piece double baffle in at least one of the end tanks; wherein the single piece double baffle divides at least one end tank into a first portion and a second portion; wherein the single piece double baffle has portions with walls, the portions with walls either 1) being symmetric about the centerline of the baffle, 2) essentially following the contours of the interior of the end tank, or 3) having a combination of both; and wherein the walls of the single piece double baffle define at least one gap or chamber, the gap or chamber being shaped such that the single piece double baffle substantially has an H shape, the single piece double baffle including a center section disposed between the baffle walls, the center section being thicker than a thickness of one of the baffle walls.