The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 1987
Filed:
May. 06, 1986
Omer N Cur, St. Joseph Township, Berrien County, MI (US);
Whirlpool Corporation, Benton Harbor, MI (US);
Abstract
A generally corrugated fin of a finned tube heat exchanger is formed to have a plurality of cylindrical collars that fit closely around tubes containing a first fluid, for good thermally conductive contact therewith. The collars are arrayed in rows along the corrugations and, within each local fin region between adjacent collars, cuts are provided parallel to and between adjacent crests and troughs, with a portion of each crest locally inverted to form a local trough and each trough inverted to form a local crest between successive cuts. A second fluid flowing outside the tubes between adjacent fins is thereby enabled to form numerous short boundary layers and to flow from one side of each fin to the other, thereby promoting turbulence and flow-mixing that enhance heat transfer between the two fluids. In a preferred embodiment of the fin, two parallel local cuts are provided between each crest and trough and the strip between each pair of cuts is formed into a louver having a substantial portion parallel to the closest surface of the adjacent inverted local crest and trough on either side.