Patent ID: 7029235
Filing Date: 2006-04-18
Classification: F01D

Abstract:
1. A turbine blade, comprising: a generally elongated blade having a leading edge, a trailing edge, and a tip at a first end, a root coupled to the blade at an end generally opposite the first end for supporting the blade and for coupling the blade to a disc, a longitudinal axis extending from the tip to the root, at least one central opening extending from the tip through a substantial portion of the blade, wherein an outer surface of a pressure side of the blade includes a secondary flow deflector proximate to the tip; the generally elongated blade formed from an outer wall and an inner wall with a plurality of cooling channels extending from a cooling supply cavity in the root to the tip of the blade between the outer and inner walls; a plurality of exhaust holes in the tip that are coupled to the cooling channels for exhausting cooling fluids from the cooling channels along the longitudinal axis; and a plurality of film cooling holes in the outer surface for exhausting air onto the secondary flow deflector towards the tip.