Paul E Topitzes

US Patent:

20140041227, Feb 13, 2014

Filed:

Aug 9, 2012

Appl. No.:

13/570795

Inventors:

Eric Lindell - Waterford WI, US
Girish Mantri - Franklin WI, US
Gregory Hughes - Milwaukee WI, US
Paul Topitzes - Greenfield WI, US

International Classification:

B21C 37/22
F27B 9/04
B21D 53/08

US Classification:

29890046, 432 23, 2989003

Abstract:

A tube assembly for use in a heat exchanger is made by arranging a first corrugated fin structure between one broad, flat side of a tube and a side sheet, and arranging a second corrugated fin between another broad and flat side of a tube and another side sheet. Compressive forces are applied to the opposite faces of the side sheets to place crests and troughs of the corrugated fin structures into contact with the side sheets and the broad, flat sides, and the assembly is brazed.