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:
Oct. 28, 2008
Filed:
Sep. 30, 2004
Qimin J. Dong, Greer, SC (US);
Chung-lung Chen, Thousand Oaks, CA (US);
Qimin J. Dong, Greer, SC (US);
Chung-Lung Chen, Thousand Oaks, CA (US);
Reliance Electric Technologies LLC, Mayfield Heights, OH (US);
Abstract
A heat pipe is partially-filled with a liquid, such as water, and is used to transfer heat from a rotating element, such as a rotor, via phase change and internal recycle of the liquid. Several heat pipes may be disposed radially around the rotating axis of the rotating element. The heat pipes may have a curved inner surface with a curvature not corresponding to the central axis of the heat pipe and positioned opposite the rotating axis so to experience greater centrifugal forces, to advance formation of a liquid film to improve heat transfer. For a rotor, the heat pipes, though individually placed as revolving heat pipes, in total exhibit behavior that approximates the favorable heat-transfer behavior of a single larger rotating heat pipe, but with heat-transfer surface area dispersed throughout the rotor, and without compromising structural integrity of the rotor shaft.