Stationary vanes for turbines and method for making the same

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Vane or deflector

Reexamination Certificate

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Details

C415S191000, C415S208200, C029S557000, C029S558000, C029S889700

Reexamination Certificate

active

06905307

ABSTRACT:
The stator vane is provided with a leading edge which is cut into a different depth in dependence on a span-wise position so that a blade inlet angle may vary along a span-wise direction according to a prescribed pattern. By thus optimizing the depth of the cut along the leading edge of the stator vane, the leading edge blade inlet angle can be optimized along the entire length of the stator vane even if the stator vane consists of a two-dimensional aerofoil, and the vane is provided with a substantially conformal cross section in parts which are not affected by the cut in the leading edge. Thereby, the efficiency of the turbine can be optimized while minimizing the cost.

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