Pumps – Motor driven – Electric or magnetic motor
Patent
1974-06-24
1976-02-03
Husar, C. J.
Pumps
Motor driven
Electric or magnetic motor
415 53T, 417366, 417372, F04B 3504
Patent
active
039362434
ABSTRACT:
A fuel pump, comprises an electric motor mounted in a tubular housing which is formed with a tapered portion at the take-in side, and an impeller which is mounted adjacent the tapered portion of the housing on the armature shaft of the motor for rotation therewith. A disc-shaped wall concentrical of the armature shaft separates the impeller from the motor space and is formed, at its circumference, with a channel-shaped annular duct open toward the periphery of the impeller. The radially extending impeller blades are thereby enclosed between the tapered portion of the housing and the disc-shaped wall, and the fuel is guided radially into the annular duct. The inside cross-section of the duct is appropriately increasing along the circumference so that the fuel speed is reduced with minimum losses of energy and passes through apertures in the annular duct to the inside periphery of the motor space to which it is urged due to centrifugal forces and along which it is guided by longitudinal ribs prior to passing to the outlet. To improve the efficiency of the impeller, the blades are covered by an annular wall at the side remote from the tapered portion of the housing.
REFERENCES:
patent: 975532 (1910-11-01), Keller
patent: 1114727 (1914-10-01), Breeze
patent: 2704516 (1955-03-01), Mock et al.
patent: 2824520 (1958-02-01), Bartels
patent: 3073248 (1963-01-01), Bartels
patent: 3398687 (1968-08-01), Yoshikawa
patent: 3418991 (1968-12-01), Schulz et al.
patent: 3666381 (1972-05-01), Ulm et al.
patent: 3836291 (1974-09-01), Bottcher
Husar C. J.
SWF-Spezialfabrik fur Autozubehor Gustav Rau GmbH
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