Radially curved axial cross-sections of tips and sides of diffus

Details Radially curved axial cross-sections of tips and sides of diffus Radially curved axial cross-sections of tips and sides of diffus

1979-01-31

1980-01-01

Casaregola, Louis J.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Pump outlet or casing portion expands in downstream direction

415211, F01D 102, F01D 900

Patent

active

041814673

ABSTRACT:
This invention is proposed to increase the efficiency of all vaned diffusers used in centrifugal compressors, without in itself further increasing the overall diameter. The invention is to curve in a radial plane, the axial cross-sections of vanes from tip to near the throat, so as logically to accommodate the heretofore deleterious effect of the long-recognized highly-arched relative velocity traverse across the impeller exit annulus, a recognition seldom reflected in diffuser structure over the past approximately 49 years of vaned diffuser development.

REFERENCES:
patent: 2228194 (1941-01-01), Birkigt
patent: 2708883 (1955-05-01), Keller et al.
patent: 3778186 (1973-12-01), Bandukwalla
patent: 3930746 (1976-01-01), Kronogard
patent: 3964837 (1976-06-01), Exley
patent: 4012166 (1977-03-01), Kaesser et al.
patent: 4027997 (1977-06-01), Bryans

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