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:
Mar. 10, 2009
Filed:
Jul. 01, 2005
Hans-thomas Bolms, Mülheim an der Ruhr, DE;
Ralf Müsgen, Essen, DE;
Hans-Thomas Bolms, Mülheim an der Ruhr, DE;
Ralf Müsgen, Essen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A turbine blade (), with a root section (), with a tip section () and with a blade leaf () which is provided with a number of coolant ducts () through which a coolant (K) is capable of flowing, outlet ducts () which issue in outlet ports () branching off, in the leading edge region () of the blade leaf (), from a coolant duct () running essentially in the longitudinal direction (L) of the turbine blade () and spaced apart from the leading edge (), the outlet ports () being arranged along at least two rows oriented essentially parallel to the leading edge (), and the outlet ducts () being oriented, in the region of their respective outlet port (), obliquely with respect to the longitudinal direction (L) of the turbine blade (), in such a way that the coolant (K) flowing out in a root-side subsection () of each row possesses, in the region of the outlet ports (), a velocity component pointing toward the tip section () of the turbine blade (), and the coolant (K) flowing out in a tip-side subsection (), continguous thereto, of each row has a velocity component pointing toward the root section (), is designed for a particularly reliable and uniform cooling of the leading edge region (), at the same time with the requirement for coolant (K) being kept particularly low. For this purpose, according to the invention, the transitional points () at which the orientation of the outlet ducts () changes are arranged so as to be offset relative to one another in the longitudinal direction (L) in each case for two adjacent rows.