Rotary high-pressure, low-capacity pump

Details Rotary high-pressure, low-capacity pump Rotary high-pressure, low-capacity pump

1984-01-16

1985-09-24

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Smooth runner surface for working fluid frictional contact

415203, F01D 136

Patent

active

045430373

ABSTRACT:
A high-pressure, low-capacity pump comprises a rotor (3) of a smooth, planar, circular surface rotating in a pump casing (1) provided with a stator surface (21) facing the rotor surface at a short distance. The stator surface (21) is in the shape of a circular, flat-topped ridge having its center displaced in respect of the rotor center by a given distance. The circular ridge is characterized by that it is bisected along a line extending through both the center of the circle and the rotor center and that it is of different height on both sides of the bisecting line, creating a respective narrow gap (h) and a wide gap (H) between the ridge and the rotor surface. A fluid inlet (11) is provided in the casing on the outside of the circular ridge and a fluid outlet (22) on the inside of the ridge. Owing to the eccentricity of the rotor and the stator ridge more fluid is drawn by the drag of the rotor surface into the space defined by the stator ridge through the wide gap than escapes through the narrow gap, whereby the pressure increases inside the stator space and drives the fluid out through the fluid outlet.

REFERENCES:
patent: 1492846 (1924-05-01), Holweck
patent: 3123861 (1964-03-01), Westover
patent: 3617148 (1971-11-01), Endress
patent: 3794447 (1974-02-01), Bullough
patent: 3794449 (1974-02-01), Brouwer

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