Method of manufacturing spiral heat exchanger tubes with an exte

Details Method of manufacturing spiral heat exchanger tubes with an exte Method of manufacturing spiral heat exchanger tubes with an exte

1990-11-21

1992-03-03

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

72371, B23P 1526

Patent

active

050920383

ABSTRACT:
An improved heat exchanger tube is provided in which the tube has one or more paralleled integral spirals formed in the tube wall providing on the exterior surface one or more convoluted spiral recesses of selected pitch, and fin members affixed to the spiral tube providing a tube having greatly increased external surface area, per unit of length and a convoluted, laminar flow breaking, interior surface.

REFERENCES:
patent: 1983468 (1934-12-01), Knab
patent: 3533267 (1970-10-01), Bunnell
patent: 4059004 (1977-11-01), Perkins
patent: 4171634 (1979-10-01), Perkins
patent: 4203312 (1980-05-01), Perkins
patent: 4236299 (1980-12-01), Joekel et al.
patent: 4317353 (1982-03-01), Geppelt
patent: 4514900 (1985-05-01), Benard
patent: 4735071 (1988-04-01), Ueda et al.

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