Fuel pump

Details Fuel pump Fuel pump

1984-06-22

1990-07-03

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Turbine regenerative pump

F04D 500

Patent

active

049386590

ABSTRACT:
In a peripheral fuel-conveying pump, in which the rotatable impeller, provided with a plurality of vanes spaced from each other by grooves, is enclosed with the housing of the pump so that a fuel-feeding passage is formed between the inner wall of the housing and the periphery of the impeller. The dimensions of the fuel-feeding passage are defined by the first geometric characteristic R.sub.m which is a ratio between S and L, wherein S is the cross-sectional area of the space enclosed between the housing wall, defining the feeding passage, and the periphery of the impeller, and L is the length of the periphery of the portion of the impeller inserted into the fuel-feeding passage. R.sub.m must be in the range of 0.4-2 mm. The dimensions of the fuel-feeding passage are also limited by the second geometric characteristic R.sub.s =B/E and the third geometric characteristic RA=B/E, which must be in the range of 0.5-1.5, and wherein B is the width of the impeller in the axial direction, E is the height of each vane, A.sub.1 is the sum of the cross-sectional areas of the portions of space S positioned laterally of the impeller and A.sub.2 is the cross-sectional area of the remaining portion of space S.

REFERENCES:
patent: 2340787 (1944-02-01), Zenner et al.
patent: 2724338 (1955-11-01), Roth
patent: 3259072 (1966-07-01), Carpenter
patent: 3558236 (1971-01-01), Bylsma
patent: 4194360 (1980-03-01), Stieger
patent: 4493620 (1985-01-01), Takei et al.
"Die Kreiselpumpen fur Flussigkeiten und Gase" by Carl Pfleiderer, Springer Verlag, 1961, pp. 615,616.

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