Patent ID: 6241012
Filing Date: 2001-06-05
Classification: B21C,F28D,F28F,Y10T

Abstract:
A folded tube for a heat exchanger comprising:a base;a top spaced from and opposing said base;a first side interposed between said base and said top along one side thereof;a second side interposed between said base and said top along another side thereof; andat least one of said base and said top having at least one internal web having an initial web width and an initial outside shoulder radius being compressed to compress said at least one internal web to a final web width less than said initial web width and a final outside shoulder radius less than said initial outside shoulder radius and defining a plurality of fluid ports, said at least one internal web having a first fold portion and a second fold portion adjacent said first fold portion and being formed from one of said base and said top, said at least one internal web having at least one enhancement with a base and a peak formed from either one of said first fold portion and said second fold portion and said base having a width greater than said peak.