Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Runner – shaft – or separate motor operated
Patent
1984-03-20
1987-02-10
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Selectively adjustable vane or working fluid control means
Runner, shaft, or separate motor operated
415211, F04D 2946
Patent
active
046420266
ABSTRACT:
A centrifugal gas compressor includes a centrifugal impeller and a diffuser with control vanes which pivot about their leading edges. The radially inward-facing surfaces of the control vanes are curves with a radius of curvature substantially equal to the radial spacing of the leading edges from the impeller rotation axis. In the closed vane position, each leading edge is overlaid by a trailing edge of an adjacent vane so that a closed annular wall blocks all outflow. One or more diffuser vanes may be fixedly positioned with respect to each control vane so as to pivot with the control vanes. The diffuser vanes are positioned radially outward from the control vanes and define respective gradually widening paths to diffuse the outflowing gas. As an alternative to diffuser vanes, the control vanes may be extended in length to define the widening paths between adjacent control vanes.
REFERENCES:
patent: 916156 (1909-03-01), Huguenin
patent: 2648195 (1953-08-01), Wilde et al.
patent: 2797858 (1957-07-01), von der Nuell
patent: 2985427 (1961-05-01), Houghton
patent: 3069070 (1962-12-01), Macaluso et al.
patent: 4325673 (1982-04-01), Hall, Jr.
patent: 4371310 (1983-02-01), Henry, IV et al.
Garrett Robert E.
Pitko Joseph M.
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