Heat exchange – Tubular structure – With discrete heat transfer means
Patent
1993-06-18
1996-04-09
Flanigan, Allen J.
Heat exchange
Tubular structure
With discrete heat transfer means
165152, F28F 120
Patent
active
055052576
ABSTRACT:
A corrugated fin strip for heat exchanger tubes has interfacing parallelogram shaped fin panels joined by successive parallel crests, all fin panels having the same parallelogram shape selected in accordance with a desired configuration of the heat exchanger. In one embodiment, these parallel crests extend obliquely between the longitudinal edges of a rectilinear metal strip from which the fin strip is formed, and are adapted to be alternatively attached to the flat face of a heat exchanger tube in oblique relation to parallel sides of the tube, thereby defining an air flow direction oblique to the length thereof. In a second embodiment, the successive parallel crests extend perpendicularly to the opposite edges of the rectilinear metal strip, are displaced alternately therefrom by a selected distance, and are adapted to be attached alternately to the opposed flat faces of a pair of longitudinally parallel heat exchanger tubes, thereby displacing one tube transversely from the other. The fin strip of either embodiment is adapted to be wound in a helix around a cylindrical heat exchanger tube with alternate parallel crests attached to the tube in axial alignment therewith and with each other.
REFERENCES:
patent: 2063757 (1936-12-01), Saunders
patent: 4693307 (1987-09-01), Scarselletta
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