Rotary kinetic tangential pump

Details Rotary kinetic tangential pump Rotary kinetic tangential pump

2006-10-24

2006-10-24

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing having tangential inlet or outlet

C415S185000, C415S206000, C415S224000

Reexamination Certificate

active

07125224

ABSTRACT:
A kinetic pump has a tangential axially inner inlet means and a tangential discharge and with a rotor having vanes forming fluid channels to move fluid from inlet to discharge. The volute is eliminated or restricted only to the discharge port sector, and the vanes, hence fluid channels, are oriented so as to be tangent to the inlet port axial cylindrical fluid entry zone. The removal of the volute makes the pump to be positive displacement, since the fluid is contained within the chambers enclosed by vanes, except for when passing the discharge port. The tangential orientation of the vanes allows the fluid, driven by atmospheric pressure to enter the chambers and fill the chambers both by the NPSH and by centrifugal force. The boundaries to the chambers are the fluid passages, and at the axial inner chamber surface by a cylindrical isobar formed by the divergent centrifugal force field, and at the axially outer surface, by an isobar corresponding to the outer distance from the axis at the tangential discharge port. This allows the pump to be filled by NPSH and gain rotational energy from the rotor, resulting in a focused tangential discharge of high velocity.

REFERENCES:
patent: 1215881 (1917-02-01), Slemen
patent: 1287920 (1918-12-01), Duda
patent: 2982224 (1961-05-01), Williams
patent: 3560106 (1971-02-01), Sablstrom
patent: 3698832 (1972-10-01), Price
patent: 3773432 (1973-11-01), Chow et al.
patent: 3776657 (1973-12-01), Ask

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