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. 18, 2008
Filed:
Aug. 16, 2005
Robert A. Charbonneau, Meriden, CT (US);
Kenneth P. Botticello, West Suffield, CT (US);
Shawn J. Gregg, Wethersfield, CT (US);
Kirk David Hlavaty, East Hartford, CT (US);
Jeffrey R. Levine, Wallingford, CT (US);
Kenneth A. Lonczak, Meriden, CT (US);
Craig R. Mcgarrah, Southington, CT (US);
Dominic J. Mongillo, West Hartford, CT (US);
Lisa P. O'neill, Manchester, CT (US);
Edward Pietraszkiewicz, Southington, CT (US);
Richard M. Salzillo, Plantsville, CT (US);
Heather Ann Terry, Middletown, CT (US);
Robert A. Charbonneau, Meriden, CT (US);
Kenneth P. Botticello, West Suffield, CT (US);
Shawn J. Gregg, Wethersfield, CT (US);
Kirk David Hlavaty, East Hartford, CT (US);
Jeffrey R. Levine, Wallingford, CT (US);
Kenneth A. Lonczak, Meriden, CT (US);
Craig R. McGarrah, Southington, CT (US);
Dominic J. Mongillo, West Hartford, CT (US);
Lisa P. O'Neill, Manchester, CT (US);
Edward Pietraszkiewicz, Southington, CT (US);
Richard M. Salzillo, Plantsville, CT (US);
Heather Ann Terry, Middletown, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
The present invention provides an improved cooling circuit for a trailing edge of a turbine blade. The cooling circuit includes an inlet passage that receives a airflow and distributes the airflow through a feed passage. The feed passage primarily includes trip strips, at least one barrier including cross-over holes, teardrop shaped protrusions, and pockets disposed along a trailing edge. The geometry and positioning of both the cross-over holes and teardrop shaped protrusions downstream of the cross-over holes have been optimized to maximize cooling efficiency and reduce airflow. An improved transition between the inlet passage and the feed passage is also provided, which is arcuate and allows the airflow to maintain attachment and flow unimpeded from the inlet passage to the feed passage. The geometry of the pockets disposed along the trailing edge is optimized to improve cooling.