Variable geometry turbine

Details Variable geometry turbine Variable geometry turbine

2005-04-08

2009-12-08

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

C417S407000

Reexamination Certificate

active

07628580

ABSTRACT:
A variable geometry turbine comprises a housing defining a chamber within which a turbine wheel is mounted. The chamber has an annular inlet having a width defined between side walls of the housing. An array of vanes is mounted within the inlet, each vane having a length extending across the inlet, and a chordal length defined between leading and trailing vane edges. The vanes can be pivoted to adjust the effective cross-section area of the annular inlet. Each vane is pivotable between a first position in which the area of the inlet is a minimum and a second position in which the area of the inlet is a maximum. At least one of the side walls is configured so that clearance between the side wall and at least a portion of the adjacent chordal edge of each vane varies in a predetermined manner as the vane moves.

REFERENCES:
patent: 3495921 (1970-02-01), Swearingen
patent: 4130989 (1978-12-01), Wirth et al.
patent: 4502836 (1985-03-01), Swearingen
patent: 4880351 (1989-11-01), Inoue et al.
patent: 6419464 (2002-07-01), Arnold
patent: 1 197 637 (2002-04-01), None
patent: 731822 (1955-06-01), None
patent: 2002-364374 (2002-12-01), None
patent: WO 2004/036010 (2004-04-01), None

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