Pumps and pump components

Details Pumps and pump components Pumps and pump components

1985-09-03

1987-01-06

Nase, Jeffrey V.

Fluid sprinkling, spraying, and diffusing

Electrostatic type

239302, 31511181, 417 48, B05B 502

Patent

active

046340572

ABSTRACT:
An electrostatic pump or pumping liquids having a resistivity in the range of 10.sup.10 to 10.sup.7 ohm cm has a pump housing. The pump housing includes a passageway through which the liquid is pumped, and a single injection electrode disposed upstream of the passageway. The electrode has a sharp electrically-conducting tip. A constriction in the region of the tip is shaped to conform to the surface configuration of the tip so that the liquid flows pass the tip in a laminar nonturbulent fashion through an orifice of reduced cross-section. The constriction is so dimensioned as to provide a high resistance path. A chamber is disposed downstream of the constriction and is of larger cross-section than the constriction. A discharged electrode is disposed in the chamber and is separated from the injection electrode by the chamber and the constriction. The injection and discharge electrodes are coupled to a high voltage generator to maintain an electric potential between the electrodes on the order of kilovolts.

REFERENCES:
patent: 3267859 (1966-08-01), Jutila
patent: 3398685 (1968-08-01), Stuetzer
patent: 3581997 (1971-06-01), Stevenson
patent: 4328940 (1982-05-01), Malcolm
patent: 4358059 (1982-11-01), Coffee
Stuetzer, Otmar M.; "Ion Drag Pressure Generation"; Journal of Applied Physics, vol. 30, No. 7, Jul. 1959, pp. 984-994.

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