Fuel pump and radial-flow impeller therefor

Details Fuel pump and radial-flow impeller therefor Fuel pump and radial-flow impeller therefor

1988-12-06

1989-12-12

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

416185, F04D 2924

Patent

active

048864170

ABSTRACT:
A single stage centrifugal fuel pump which can provide a large range of flow, 1 to 300 gpm, while maintaining low flow, high speed operation with pressure instability at minimum values comprises a radial-flow impeller having a front shroud and a discharge for discharging fuel from the impeller. A diffuser ring has a throat entrance located opposite and in spaced relation to the discharge of the impeller. The front shroud is provided with an extension which extends into the vaneless space between the impeller discharge and the throat entrance of the diffuser ring thereby reducing the flow at which pressure instability inception occurs.

REFERENCES:
patent: 1111250 (1914-09-01), Davidson
patent: 1326043 (1919-12-01), Flugel
patent: 1809526 (1931-06-01), Namur
patent: 2927536 (1960-03-01), Rhoades
patent: 3797085 (1974-03-01), Aartman
patent: 3824029 (1974-07-01), Fabri et al.
patent: 3832089 (1974-08-01), Moellmann
patent: 4395130 (1983-07-01), Kutowy
patent: 4425081 (1984-01-01), Raczynski
patent: 4752187 (1988-06-01), Hergt et al.

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