Impeller for a regenerative turbine fuel pump

Details Impeller for a regenerative turbine fuel pump Impeller for a regenerative turbine fuel pump

1997-06-20

1998-06-09

Kwon, John T.

Rotary kinetic fluid motors or pumps

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

Turbine regenerative pump

F04D 2942

Patent

active

057624690

ABSTRACT:
An impeller for use in a regenerative pump for pumping automotive fuel to an engine includes a plurality of vanes radially extending from a core. Each vane has a leading surface, a trailing surface, and a sidewall between the leading surface and the trailing surface. A plurality of partitions is interposed between the vanes such that the vanes and partitions define a plurality of vane grooves. Fuel is then pumped by the vanes through the vane grooves such that the fuel flows along a generally spiral path thereby defining a primary vortex. A relief is formed at least partially along the length of each vane at the intersection between the trailing surface and the sidewall. This relief causes the fuel flowing along the generally spiral path, also known as the primary vortex, to also rotate about an instantaneous axis thereby defining a secondary vortex. The secondary vortex has the benefit of reducing turbulence with the attendant benefit of reducing cavitation or vapor generation within the fuel pump.

REFERENCES:
patent: 1689579 (1928-08-01), Burks
patent: 2042499 (1936-09-01), Brady
patent: 2283844 (1942-04-01), Brady, jr.
patent: 3359908 (1967-12-01), Toma
patent: 5498125 (1996-03-01), Hablanian
patent: 5513950 (1996-05-01), Yu

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