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:
Jan. 19, 2021
Filed:
Jul. 28, 2016
Siemens Aktiengesellschaft, Munich, DE;
Paul A. Sanders, Charlotte, NC (US);
Brian J. Wessell, York, SC (US);
SIEMENS AKTIENGESELLSCHAFT, Munich, DE;
Abstract
A turbine airfoil () includes an elongated hollow body () defining a radial cavity (T, T) positioned in an airfoil interior (). A pair of radial flow passes (B,E/C,D) incorporating near-wall cooling () channels are formed on opposite sides of the elongated hollow body (), which are in serial flow relationship conducting a coolant in opposite radial directions, forming a serpentine cooling path (). A downstream radial flow pass (C, D) of the serpentine cooling path () is fluidically connected to the radial cavity (T, T). Relatively heated coolant from the serpentine cooling path is directed into the radial cavity (T, T) to warm the elongated hollow body (). The coolant is subsequently discharged via impingement openings () on the elongated hollow body () into first and second impingement volumes () that respectively adjoin the pressure and suction side walls (). A temperature gradient between the elongated hollow body () and the outer wall () is thereby reduced.