Turbomachine with variable stator

Details Turbomachine with variable stator Turbomachine with variable stator

2006-12-18

2008-08-26

Nguyen, Ninh H (Department: 3745)

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

C416SDIG004

Reexamination Certificate

active

07416382

ABSTRACT:
A variable stator of a turbomachine with a profile skeleton line extending along a meridional flow line, with the stator being radially divided into at least three zones (Z0, Z1, Z2) and with the respective radial inner and the radial outer profile skeleton line of each zone (Z0, Z1, Z2) being designed such that it satisfies the following equations:α*=α1-αPα1-α2S*=SPSwhere:P is any point of the profile skeleton line,α1is the angle of inclination at the stator leading edge,α2is the angle of inclination at the stator trailing edge,α* is the dimensionless, specific angle of the total curvature,S* is the dimensionless, specific extension,αPis the angle of the tangent at any point P of the profile skeleton line to the central meridional flow line,sPis the extension of the profile skeleton line at any point P, andS is the total extension of the profile skeleton line.

REFERENCES:
patent: 4231703 (1980-11-01), Weiler
patent: 5312230 (1994-05-01), Oda
patent: 5492446 (1996-02-01), Hawkins et al.
patent: 6129528 (2000-10-01), Bradbury et al.
patent: 2324950 (1999-09-01), None
patent: 2324951 (1999-09-01), None
patent: 42 43 052 (2004-10-01), None
patent: 698 20 853 (2004-11-01), None
patent: 1 508 669 (2005-02-01), None

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