Method and apparatus for making a looped fin heat exchanger

Details Method and apparatus for making a looped fin heat exchanger Method and apparatus for making a looped fin heat exchanger

1990-08-07

1991-06-11

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29890035, 29727, 72 70, 72185, B21D 5302

Patent

active

050221493

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

REFERENCES:
patent: 3288209 (1966-11-01), Wall et al.
patent: 3367161 (1968-02-01), Avakian
patent: 3964286 (1986-06-01), Oerther et al.
patent: 4224984 (1980-09-01), Miyata et al.
patent: 4381592 (1983-05-01), Venables, III et al.
patent: 4542568 (1985-09-01), Venable, III et al.
patent: 4581800 (1986-04-01), Johnson

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