Compressor impeller and method of manufacture

Details Compressor impeller and method of manufacture Compressor impeller and method of manufacture

1976-04-12

1978-06-06

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Radially extending web or end plate

416188, 415143, F04D 1710

Patent

active

040934012

ABSTRACT:
An impeller blank for a centrifugal compressor has impeller blades with inducer sections of parabolic contour extending in a generally axial direction from generally radial sections of the blades. The angle of the working surface of each inducer section with respect to a plane at right angles to the impeller axis varies inversely with diameter and with the axial dimension of the inducer section from the radial section. The inducer sections are cut to a diameter for minimum gas velocity with respect to the impeller, a function of gas flow rate and impeller speed, and are cut axially for an inlet angle which is a function of the ratio of axial to peripheral gas velocity to achieve flow nearly parallel with the working surface of the inducer section.

REFERENCES:
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patent: 2422615 (1947-06-01), Halford
patent: 2484554 (1949-10-01), Concordia et al.
patent: 2835960 (1958-05-01), Rork
patent: 2965287 (1960-12-01), Schug
patent: 2985952 (1961-05-01), Nutter et al.
patent: 3028140 (1962-04-01), Lage
patent: 3069072 (1962-12-01), Birmann
patent: 3363832 (1968-01-01), Groff
patent: 3904308 (1975-09-01), Ribaud
patent: 3951611 (1976-04-01), Morrill

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