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:
Feb. 06, 2001
Filed:
Nov. 02, 1998
Applicant:
Inventors:
Donald L. Bennett, Franklin, KY (US);
Liangyou Tang, Cottontown, TN (US);
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F 1/318 ; F28F 1/20 ; F28F 1/30 ;
U.S. Cl.
CPC ...
F28F 1/318 ; F28F 1/20 ; F28F 1/30 ;
Abstract
A heat exchanger tube having an internal surface that is configured to enhance the heat transfer performance of the tube. The internal enhancement has a plurality of polyhedrons extending from the inner wall of the tubing. The polyhedrons have first and second planar faces disposed substantially parallel to the polyhedral axis. The polyhedrons have third and fourth faces disposed at an angle oblique to the longitudinal axis of the tube. The resulting surface increases the internal surface area of the tube and the turbulence characteristics of the surface, and thus, increases the heat transfer performance of the tube.