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:
Sep. 26, 2017
Filed:
May. 27, 2014
Applicants:
Ihi Corporation, Tokyo, JP;
The Society of Japanese Aerospace Companies, Tokyo, JP;
Inventors:
Yoji Okita, Tokyo, JP;
Akira Murata, Tokyo, JP;
Assignees:
IHI CORPORATION, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 5/18 (2006.01);
U.S. Cl.
CPC ...
F01D 5/18 (2013.01); F01D 5/186 (2013.01); F01D 5/187 (2013.01); F05D 2240/122 (2013.01); F05D 2240/127 (2013.01); F05D 2240/304 (2013.01); F05D 2240/31 (2013.01); F05D 2260/2212 (2013.01); F05D 2260/2214 (2013.01); Y02T 50/673 (2013.01); Y02T 50/676 (2013.01);
Abstract
A turbine blade has hollowness, and is provided with a back-side wall of which a portion of the inner wall surface is exposed at the rear edge portion, with cooling air flown along the inner wall surface at the exposed region; and a recess provided in the inner wall surface at the exposed region. The contour of the recess () viewed from the normal direction of the inner wall surface of the back-side wall is set to a shape that is symmetrical centered on a reference axis (L) that intersects the flow direction of cooling air, and that broadens along the reference axis (L).