Flow pump, especially for supplying fuel from a fuel tank of a m

Details Flow pump, especially for supplying fuel from a fuel tank of a m Flow pump, especially for supplying fuel from a fuel tank of a m

1997-07-11

1999-05-18

Verdier, Christopher

Rotary kinetic fluid motors or pumps

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

Turbine regenerative pump

415 551, F04D5/00

Patent

active

059044683

ABSTRACT:
The flow pump for supplying a fuel in a motor vehicle includes a pump housing (10) provided with a pump chamber (11) bounded by two radially-extending side walls (12,13) axially spaced from each other and connected with each other by a peripheral wall (14) and a rotatable impeller (24) arranged in the pump chamber (11) coaxial to a pump axis (22). The impeller (24) includes circumferentially spaced radial impeller blades (29) bounding axially open impeller chambers (31) and an outer ring (30) connecting the impeller blades (29) with each other. The two radially-extending side walls (12,13) are provided with respective groove-like side channels (20,21) concentric to the pump axis (22) and open to the pump chamber (11). Each radially-extending side wall (12,13) has an intervening portion (23) between a channel end (212) and a channel beginning (211). The outer ring (30) and the peripheral wall (14) bound a radial space (32,32') between them and the outer ring (30) includes a circumferential radial gap (34) or a plurality of throughgoing passages (37) for providing a fluid flow between a number, advantageously all, of the impeller chambers (31) and the radial space (32,32').

REFERENCES:
patent: 3762832 (1973-10-01), Franck et al.
patent: 4923365 (1990-05-01), Rollwage
patent: 5456575 (1995-10-01), Helmer et al.
patent: 5468119 (1995-11-01), Huebel et al.
patent: 5486087 (1996-01-01), Treiber et al.
patent: 5765992 (1998-06-01), Muramatsu et al.

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