Patent ID: 8037930
Filing Date: 2011-10-18
Classification: F28D,F28F,Y10T

Abstract:
1. A heat exchanger comprising: a tube defining a first and second engagement portion and a fin portion; an inner fin disposed within the tube; a first header plate disposed on a first side of the tube in a longitudinal direction of the tube, the first engagement portion of the tube being disposed within an opening defined by the first header plate; a second header plate disposed on a second side of the tube in the longitudinal direction of the tube, the second engagement portion of the tube being disposed within an opening defined by the second header plate; and an outer fin disposed only on an outer surface of the fin portion of the tube; wherein the tube is formed by a formed plate, an edge portion of the formed plate extending in the longitudinal direction of the tube is brazed to an outer surface of the formed plate; a circumferential position on the tube of an edge portion of the first and second engagement portions of the tube is different than a circumferential position on the tube of an edge portion of the fin portion of the tube; the edge portion of the first and second engagement portions defines a continuous face around an outer surface of the tube; and the edge portion of the fin portion is spaced from the outer fin.