Centrifugal pump impeller, and in combination with a centrifugal

Details Centrifugal pump impeller, and in combination with a centrifugal Centrifugal pump impeller, and in combination with a centrifugal

1992-08-10

1994-01-25

Kwon, John T.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Dynamically created seal

F04D 2908

Patent

active

052810887

ABSTRACT:
Atop the impeller are ancillary vanes, the same provided for pumping cooling liquid to the centrifugal pump motor cooling system. The liquid is conveyed through a narrow slot, vertically, which obtains between an annulus of the pump housing and an impeller extension. Grooves, contiguous with inner tips of the ancillary vanes, and formed in the extension, widen the slot, cyclically, coincident with rotation of the impeller, and hasten deaeration of air bubbles which exist, at start-up, between the impeller and the pump housing.

REFERENCES:
patent: 1967316 (1934-07-01), Meeker
patent: 2349731 (1944-05-01), Hornschuch
patent: 2649050 (1953-08-01), Dibdin
patent: 3371613 (1968-03-01), Dahlgren et al.
patent: 4527947 (1985-07-01), Elliott
patent: 4854820 (1989-08-01), Zolotar et al.
patent: 5076757 (1991-12-01), Dorsch

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