Turbine fuel pump

Details Turbine fuel pump Turbine fuel pump

1999-02-17

2000-09-05

Walberg, Teresa

Pumps

Motor driven

Electric or magnetic motor

415 551, F04B 1700, F04B 3504

Patent

active

061133639

ABSTRACT:
An electric motor turbine-type fuel pump having an impeller with a plurality of circumferentially spaced vanes disposed about the periphery of the impeller with each vane being inclined relative to a plane defined by the axis of rotation of the impeller and a radius of the impeller extending to a leading face of that vane with the leading face of each vane having a generally concave or cup shape. The vanes have a base connected to a main body of the impeller and a free end or tip radially outwardly of the base. Preferably, the vanes are inclined such that the tip trails the base as the impeller rotates and are generally arcuate along both their axial and radial extent. This orientation of the vane and the concave or cup shape of each vane improves the circulation of the fuel about the periphery of the impeller to improve the efficiency of the fuel pump. More specifically, the inclined or canting of the vanes is believed to improve the flow of fuel into a pocket defined between adjacent vanes and the concave or cup shape of the vanes is believed to help direct the fuel discharged from the pocket forward relative to the direction of rotation of the impeller.

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