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:
Apr. 10, 2012
Filed:
Feb. 15, 2008
Frank Haselbach, Melbourne, GB;
Erik Janke, Berlin, DE;
Jens Taege, Berlin, DE;
Timm Janetzke, Berlin, DE;
Wolfgang Nitsche, Neuwerder, DE;
Matthias Reyer, Berlin, DE;
Frank Haselbach, Melbourne, GB;
Erik Janke, Berlin, DE;
Jens Taege, Berlin, DE;
Timm Janetzke, Berlin, DE;
Wolfgang Nitsche, Neuwerder, DE;
Matthias Reyer, Berlin, DE;
Abstract
In impingement air cooling of gas turbine components, cooling air velocity packs of a certain amplitude and a given frequency are applied to impingement air openings, with intervallic annular swirl structures being formed which penetrate a cross-flow and hit a component to be cooled with high intensity, thus providing for efficient cooling. In order to obtain annular swirl structures with optimum cooling effect, the Strouhal number, which is determined by a ratio of amplitude, frequency of the velocity packs and size of impingement air cooling openings, ranges between 0.2 and 2.0, and preferably between 0.8 and 1.2.