Turbine airfoil formed as a single piece but with multiple materials
First Claim
1. An air cooled turbine airfoil comprising:
- a leading edge and a trailing edge;
a pressure side wall and a suction side wall extending between the leading and trailing edges;
a multiple pass serpentine flow cooling circuit extending along a side wall of the airfoil;
a plurality of pin fins extending across each of the channels of the multiple pass serpentine flow cooling circuit; and
,the pin fins are perpendicular to a surface of the airfoil wall.
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Accused Products
Abstract
An air cooled turbine airfoil includes a multiple pass serpentine flow cooling circuit formed from a metallic printing process in which the blade can be printed from different materials as a single piece blade. The blade includes a multiple pass serpentine cooling circuit in which the channels include ribs and pin fins that are formed perpendicular to the airfoil wall. The inner chordwise extending rib, the ribs and the f[pin fins and the outer airfoil wall call all be printed as a single piece but all with a different material in order to control the metal temperature of the blade. a seven pass serpentine flow cooling circuit can be formed that flows along the pressure side wall and then the suction side wall and use low flow cooling amount.
40 Citations
11 Claims
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1. An air cooled turbine airfoil comprising:
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a leading edge and a trailing edge; a pressure side wall and a suction side wall extending between the leading and trailing edges; a multiple pass serpentine flow cooling circuit extending along a side wall of the airfoil; a plurality of pin fins extending across each of the channels of the multiple pass serpentine flow cooling circuit; and
,the pin fins are perpendicular to a surface of the airfoil wall. - View Dependent Claims (6, 7)
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2. An air cooled turbine rotor blade comprising:
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an airfoil with a leading edge region and a trailing edge region and a pressure side wall and a suction side wall both extending between the leading and trailing edge regions; a multiple pass serpentine flow cooling circuit formed within the airfoil and extending along the pressure side wall and the suction side wall; a TBC applied over the airfoil walls; and
,the airfoil walls and the TBC being formed as a single piece from a metal printing process. - View Dependent Claims (3, 4, 5)
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8. An air cooled turbine rotor blade comprising:
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an airfoil with a leading edge region and a trailing edge region, and a pressure side wall and a suction side wall extending between the leading and trailing edge regions; a chordwise extending rib extending along a middle of the airfoil; an outer airfoil wall; a plurality of ribs and pin fins extending from the chordwise extending rib to the airfoil wall to from cooling air passages; the chordwise extending rib and the airfoil wall and the plurality of ribs and pin fins being formed as a single piece; and
,the chordwise extending rib and the airfoil wall and the plurality of ribs and pin fins being made from three different materials. - View Dependent Claims (9, 10, 11)
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Specification