Patent ID: 6250380
Filing Date: 2001-06-26
Classification: F28D,F28F

Abstract:
A gas/liquid heat exchanger comprising:a stack of abutting, substantially identical plates with there being first, second, third, fourth, . . . nth plates where ""n"" is an even integer of four or more;each plate being generally channel-shaped having a base with spaced sides and spaced ends extending between said spaced sides, upstanding legs on said base, each leg extending along a corresponding side and being of equal height, each leg terminating in a flange that is generally parallel to said base, each base including a central platform of raised height less than the height of said legs and spaced inwardly of said ends and said sides so as to be surrounded by a band of said base;said plates being stacked in the order 1, 2, 3, 4, . . . n in alternating fashion with the flanges on the first and second plates in abutment, the flanges on the third and fourth plates in abutment . . . and the flanges on the n-1 and the nth plate in abutment, and with the bands on said second and third plates in abutment . . . and the bands on the n-2 and n-1 plates in abutment;whereby first flow channels exist between said first and second plates, said third and fourth plates . . . and said n-1 and nth plates, and second flow channels exist between the central platform of said second and third plates . . . and said n-2 and said n-1 plates;two side plates, one on each of two opposite sides of said stack;first and second ports in said heat exchanger at opposite ends of said plates to be in fluid communication with said first flow channels; andthird and fourth ports in one or the other or both of said side plates and in fluid communication with said second flow channels.