Looped fin heat exchanger and method for making same

Details Looped fin heat exchanger and method for making same Looped fin heat exchanger and method for making same

1987-09-08

1991-07-23

Schwadron, Martin P.

Heat exchange

Tubular structure

With discrete heat transfer means

165181, 29890048, F28F 136

Patent

active

050335448

ABSTRACT:
Heat transfer device effective in minimizing frost bridging in refrigeration operations to be wound helically onto a refrigerant-carrying tube, having an integrally formed chain of looped fins, each fin having a mounting flange at each end of the chain, a vertical fin member extending from each mounting flange connected to a bridge portion; and a method and apparatus for making same including a unitary stretch preforming process to reform the beginning fin stock into final looped fin shape in a single forming step.

REFERENCES:
patent: 2277462 (1942-03-01), Spofford
patent: 3217392 (1965-11-01), Roffelson
patent: 3288209 (1966-11-01), Wall et al.
patent: 3578952 (1971-05-01), Boose
patent: 4184544 (1980-01-01), Ullmer
ASHRAE Guide and Data Book: 1961 Fundamentals & Equipment, pp. 64-66.

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