Electricity: electrical systems and devices – Electric charge generating or conducting means – Modification of environmental electric charge
Patent
1987-05-29
1988-07-12
Hix, L. T.
Electricity: electrical systems and devices
Electric charge generating or conducting means
Modification of environmental electric charge
361235, H05F 309
Patent
active
047574216
ABSTRACT:
A room air ionization system for removing electrostatic charge from objects within the room in which one or more pairs of spaced-apart bus bars are equipped with regularly spaced, sharply pointed pins such that when the bus bars are energized with a predetermined high voltage, ions are emitted from the pointed electrodes to flood the room with approximately equal numbers of positive and negative ions. When the ions are electrically attracted to bodies exhibiting an electrostatic charge of opposite polarity, the charges are effectively neutralized. Because, in systems of this type, there is a tendency for particles of dirt to be attracted to the bus bars, spacers and surrounding ceiling and wall surfaces, frequent cleaning is usually necessary. In accordance with the present invention, however, the bus bars are appropriately pulsed with voltages of opposing pluralities and at a predetermined duty cycle on an alternating basis whereby dirt particles are attracted and repelled rather than being constantly attracted. The timed switching of the polarity of the applied voltages to the bus bar pairs thus results in less soiling of the ionization apparatus and surrounding surfaces as compared to prior art systems.
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Haugen Orrin M.
Hix L. T,.
Honeywell Inc.
Niebuhr Frederick W.
Nikolai Thomas J.
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