Fluid reaction surfaces (i.e. – impellers) – Method of operation
Reexamination Certificate
2006-09-15
2009-06-02
Verdier, Christopher (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Method of operation
C416S09700R
Reexamination Certificate
active
07540712
ABSTRACT:
A showerhead cooling arrangement for a turbine airfoil in which the showerhead includes a plurality of rows of diffusion slots arranged in an inverted V across a stagnation point of the airfoil. At least two diffusion slots are spaced along the suction side and at least two of the diffusion slots are spaced along the pressure side of the airfoil. Each diffusion slot has a rectangular cross section shape with a width about two times the height. Each diffusion slot includes a metering hole to meter cooling air from the cooling supply cavity. Each row of diffusion slots opens into a continuous diffusion slot to further diffuse the cooling air before discharging onto the leading edge. Cooling air follows a path through a metering hole, then a first diffusion into the individual diffusion slots, and then a second diffusion into the continuous diffusion slot.
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Florida Turbine Technologies, Inc.
Ryznic John
Verdier Christopher
LandOfFree
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