Heat exchanger strip and method for forming same

Details Heat exchanger strip and method for forming same Heat exchanger strip and method for forming same

B - Operations, Transporting

21

D

13/1, 26/145, 25

B21D 53/02 (2006.01) B21D 13/04 (2006.01) F28F 1/12 (2006.01)

Patent

CA 1046711

Abstract of the Disclosure A method and apparatus for rolling metal ribbon stock into convoluted fin strip for use in beat exchangers is disclosed. The passageways defined by adjacent convolutions may be of zig-zag shape in a direction transversely of the strip by reason of the fact that the form rolls are designed such that the re- turn bent portions connecting successive convolutions are initially formed as two symmetrical half sections separated by a sharp bend line extending transversely along the centerline thereof. After the strip emerges from between the form rolls it is gathered or compressed lengthwise in a conventional manner so that further bending of the convolutions is localized along said sharp straight bend lines. i

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