Centrifugal pump

Details Centrifugal pump Centrifugal pump

1979-10-01

1981-02-24

Casaregola, Louis J.

Rotary kinetic fluid motors or pumps

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

415 89, F04D 114

Patent

active

042524997

ABSTRACT:
A centrifugal pump of the pitot pump type is provided a stationary vane structure containing a pitot tube mounted inside a rotating casing. Fluid is delivered to a pumping chamber within the casing through a plurality of radially extending ducts of at least two disparate radii in the wall of the casing which discharge fluid by centrifugal force into the casing. The disparate radii of the ducts induce inward fluid circulation in the shorter ducts and outward circulation in the longer ducts which improves the low flow-pressure characteristic of the pump. An air extraction tube provides communication between the central portion of the pumping chamber and the inlet of the radially extending ducts to provide for the extraction of air from the interior of the pumping chamber to further improve the pumping efficiency.

REFERENCES:
patent: 3795459 (1974-03-01), Erickson et al.
patent: 3926534 (1975-12-01), Erickson

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