Patent ID: 7819177

Claim:
A heat exchanger assembly comprising: a first manifold extending along an axis; a second manifold extending along an axis in spaced and parallel relationship with said first manifold; each of said manifolds including a pair of ends spaced from each other; each of said manifolds having an endless tubular wall as viewed in cross-section and extending axially between said ends; said tubular wall of each of said manifolds defining a plurality of tube apertures being spaced from each other; a plurality of flow tubes extending in spaced and parallel relationship transversely between said tube apertures of said manifolds for communicating a heat exchange fluid between said manifolds; a plurality of air fins disposed between said flow tubes for increasing the surface area of said flow tubes; said tubular wall of said first manifold as viewed in cross-section including a plurality of circumferentially spaced and diametrically opposed radial indentations; an insert presenting a distribution surface disposed in said endless tubular wall of said first manifold and defining a flow path on one side of said insert for receiving the heat exchange fluid and a distribution chamber on the other side of said insert in fluid communication with said flow tubes; said insert defining a center line parallel to said axis and extending along said distribution surface; a pair of opposed side flanges integrally connected to said insert and extending from said distribution surface of said insert and along opposite sides of said tubular wall of said first manifold and engaging said indentations for orienting and securing said insert against rotation in said first manifold; and said distribution surface of said insert defining a plurality of orifices being spaced from each other for uniformly distributing the heat exchange fluid in said flow path across said distribution chamber.