Patent ID: 9435212
Filing Date: 2016-09-06
CPC Classification: F01D,F05D

Claim Text:
1. A turbine airfoil, comprising: a generally elongated hollow airfoil formed from an outer housing, and having a leading edge, a trailing edge, a pressure side, a suction side, a root at a first end of the airfoil and a tip at a second end opposite to the first end, and an airfoil cooling system positioned within interior aspects of the generally elongated hollow airfoil; a snubber extending from the outer housing forming the generally elongated hollow airfoil toward an adjacent turbine airfoil positioned within a row of airfoils including the generally elongated hollow airfoil; and a snubber cooling system positioned within the snubber and formed from at least one inner cooling channel separated from at least one outer cooling channel by an inner wall, wherein the at least one inner cooling channel is in fluid communication with the airfoil cooling system via an inlet to receive cooling fluid from the airfoil cooling system within the generally elongated hollow airfoil and wherein the inner wall includes at least one impingement cooling orifice positioned to allow cooling fluid to pass from the at least one inner cooling channel and impinge on an inner surface of an outer wall forming the at least one outer cooling channel.