Turbine blade

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Plural distributing means immediately upstream of runner

Reexamination Certificate

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Details

C416S22300B, C416SDIG004

Reexamination Certificate

active

07018174

ABSTRACT:
The invention is intended to reduce the profile loss.For that purpose, according to the invention, a plurality of turbine blades are arranged in the circumferential direction of a turbine driven by a working fluid. Each of the turbine blade is formed such that the curvature of a blade suction surface, which is defined by the reciprocal of the radius of curvature of a blade surface on the blade suction surface side, is decreased monotonously from a blade leading edge defined as the upstream-most point of the blade in the axial direction toward a blade trailing edge defined as the downstream-most point of the blade in the axial direction.

REFERENCES:
patent: 4211516 (1980-07-01), Speil
patent: 4470755 (1984-09-01), Bessay
patent: 5035578 (1991-07-01), Tran
patent: 5292230 (1994-03-01), Brown
patent: 5445498 (1995-08-01), Williams et al.
patent: 6-101406 (1994-04-01), None
patent: 9-228801 (1997-09-01), None

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