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. 15, 2015
Filed:
Jan. 08, 2009
Chiyuki Nakamata, Tokyo, JP;
Takashi Yamane, Chofu, JP;
Yoshitaka Fukuyama, Chofu, JP;
Takahiro Bamba, Chofu, JP;
Chiyuki Nakamata, Tokyo, JP;
Takashi Yamane, Chofu, JP;
Yoshitaka Fukuyama, Chofu, JP;
Takahiro Bamba, Chofu, JP;
IHI Corporation, Tokyo, JP;
Japan Aerospace Exploration Agency, Tokyo, JP;
Abstract
A cooling structure of a turbine airfoil cools a turbine airfoil () exposed to hot gas (), using cooling air () of a temperature lower than that of the hot gas. The turbine airfoil () includes an external surface (), an internal surface () opposite to the external surface, a plurality of film-cooling holes () blowing the cooling air from the internal surface toward the external surface to film-cool the external surface, and a plurality of heat-transfer promoting projections () integrally formed with the internal surface and protruding inwardly from the internal surface. The turbine airfoil further includes a hollow cylindrical insert () which is positioned inside the internal surface of the turbine airfoil and to which the cooling air is supplied. The insert has a plurality of impingement holes () for impingement-cooling the internal surface ().