Regenerative pump with two-stage stripper

Details Regenerative pump with two-stage stripper Regenerative pump with two-stage stripper

1989-10-10

1991-06-18

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

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

Turbine regenerative pump

415 521, 415 553, 415 554, 4151691, 417366, F04D 500, F04D 902

Patent

active

050245783

ABSTRACT:
A regenerative rotary pump in an automotive fuel pump assembly. The rotary pump has a disc-shaped impeller in a circular cavity of a housing, vanes around the circumference of the impeller separated by pockets, a donut-shaped pumping chamber in the housing enveloping the vanes and the pockets on the impeller, a two-stage stripper between a discharge at a high pressure end of the pumping chamber and an inlet at a low pressure end of the pumping chamber, and a vent chamber between a high pressure stage and a low pressure stage of the two-stage stripper. The vent chamber is connected to the fuel tank removed from the inlet. High pressure gasoline carried by the pockets between the vanes flashes to vapor in the vent chamber to minimize the vapor jet stream effect at the inlet end of the pumping chamber.

REFERENCES:
patent: 4502827 (1985-03-01), Shows
patent: 4538958 (1985-09-01), Takei et al.
patent: 4591311 (1986-05-01), Matsuda et al.
patent: 4653979 (1987-03-01), Schillinger
patent: 4734008 (1988-03-01), Roth

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