Method and apparatus for bending a heat exchanger coil

Details Method and apparatus for bending a heat exchanger coil Method and apparatus for bending a heat exchanger coil

1986-12-31

1988-03-01

Combs, E. Michael

Metal deforming

By deflecting successively-presented portions of work during...

By use of work-contacting wiper and moving, work-holding form

B21D 704

Patent

active

047277378

ABSTRACT:
A method and apparatus for bending a heat exchanger coil, and particularly a fin-on-tube coil, is provided which reduce pressure on the coil at a bending location to prevent damage to the fins and coil by effecting relative movement between a support bed for the coil, defining a coil plane, and a rotating mandrel, in a direction perpendicular to the coil plane during approximately the first 10.degree. of rotation of the mandrel. Such relative movement can be accomplished by either moving the support bed or by moving the rotational axis of the mandrel.

REFERENCES:
patent: 1264249 (1918-04-01), Yoder
patent: 2667202 (1954-01-01), Froedge
patent: 2812004 (1957-11-01), Huet
patent: 3287952 (1966-11-01), Van Harten
patent: 3443296 (1969-05-01), Clausing
patent: 3553989 (1971-01-01), Munro
patent: 3785190 (1974-01-01), Schall et al.
patent: 3958440 (1976-05-01), Sassak

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