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US 2011/0033311 A1Published application
Turbine Airfoil Cooling System with Pin Fin Cooling Chambers
OwnerNicholas F. Martin, John J. Marra +1inventors
InventorsNicholas F. Martin, John J. Marra, Melissa Seco-Soley
Life of this patent
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Abstract
A cooling system for a turbine airfoil having at least one pin fin with a dimpled outer surface is disclosed. The dimpled outer surface increases the cooling efficiency of the pin fin, which creates numerous efficiencies, including thermal efficiencies, manufacturing efficiencies and the like. The dimples may be formed from shapes including, but not limited to, circular, oval, racetrack, and hemispherical. The dimples may be aligned in a variety of configurations.
Claims20
A turbine airfoil, comprising:
- a generally elongated, hollow airfoil having a leading edge, a trailing edge, a tip section at a first end, a root coupled to the airfoil at an end generally opposite the first end for supporting the airfoil and for coupling the airfoil to a disc, and a cooling system formed from at least one cavity in the elongated, hollow airfoil;
- an outer wall forming the generally elongated airfoil;
- wherein the cooling system includes at least one pin fin having an outer surface with at least one dimple.
A turbine airfoil, comprising:
- a generally elongated, hollow airfoil having a leading edge, a trailing edge, a tip section at a first end, a root coupled to the airfoil at an end generally opposite the first end for supporting the airfoil and for coupling the airfoil to a disc, and a cooling system formed from at least one cavity in the elongated, hollow airfoil;
- an outer wall forming the generally elongated airfoil;
- wherein the cooling system includes a plurality of pin fins having an outer surface with a plurality of dimples.
A turbine airfoil, comprising:
- a generally elongated, hollow airfoil having a leading edge, a trailing edge, a tip section at a first end, a root coupled to the airfoil at an end generally opposite the first end for supporting the airfoil and for coupling the airfoil to a disc, and a cooling system formed from at least one cavity in the elongated, hollow airfoil;
- an outer wall forming the generally elongated airfoil;
- wherein the cooling system includes a plurality of generally cylindrical pin fins having an outer surface with a plurality of concave dimples that are aligned into horizontal rows that are offset from dimples in adjacent rows.
Dependencies are inferred from the claim text.