Electrostatic filter

Details Electrostatic filter Electrostatic filter

1987-01-14

1988-05-17

Prunner, Kathleen J.

Liquid purification or separation

Processes

Utilizing electrical or wave energy directly applied to...

55 2, 55123, 55146, 55151, 55155, 55DIG38, 204186, 204302, 210243, B03C 502, B03C 341, B03C 345, B01D 5000

Patent

active

047449101

ABSTRACT:
An improved electrostatic fluid filter is disclosed which is particularly useful in high performance clean rooms for the semiconductor industry. The electrostatic fluid filter is tubular in design and has an inlet port for supplying fluid (e.g., liquid, air) to be filtered and an output port from which relatively pure fluid flows. The filter includes a high voltage conductor which is disposed along the axis of the tube and which is surrounded by a ridged polytetrafluoroethylene insulator. Fluid is directed along the length of the filter parallel to the conductor. Contaminating particles in the fluid are transformed into electrical dipoles and are attached to the high voltage conductor.

REFERENCES:
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patent: 1333790 (1920-03-01), Bradley
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patent: 3724174 (1973-04-01), Walkenhorst
patent: 3801492 (1974-04-01), King
patent: 3972800 (1976-08-01), King
patent: 4073712 (1978-02-01), Means et al.
patent: 4435195 (1984-03-01), Testone
patent: 4477263 (1984-10-01), Shaver et al.

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