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:
Jun. 20, 2006
Filed:
Jul. 09, 2004
Peter Davison, Wuensdorf, DE;
Barbara Blume, Berlin, DE;
Peter Davison, Wuensdorf, DE;
Barbara Blume, Berlin, DE;
Rolls-Royce Deutschland Ltd & Co KG, Blankenfelde-Mahlow, DE;
Abstract
A hollow turbine blade cooled with compressor air is divided into a cooling air chamber () and into impingement air cooling chambers () by inner, supporting partitions (). The cooling air is conveyed from the cooling air chamber into the impingement air cooling chamber via impingement air channels () provided in the partitions. The impingement air channels are concave with regard to the adjacent outer wall () of the blade airfoil () and arranged completely in the hot area near the outer wall and, in addition, have an oblong or elliptical cross-section whose longitudinal axis agrees with the radial orientation of the turbine blade. By reduced stress concentration in the area of the impingement air channels, the fatigue and creep characteristics are improved and life is increased.