Duct type charge eliminator

Details Duct type charge eliminator Duct type charge eliminator

1982-09-23

1984-09-18

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

361215, 361220, H05F 306

Patent

active

044727569

ABSTRACT:
At least one planar type plasma ion source is positioned in a main duct through which charged materials pass in a manner whereby its active surface producing plasma faces the flow channel of charged materials inside the duct. The plasma ion source has at least one dielectric sheet, at least one corona electrode in operative proximity with one surface of the dielectric sheet and at least one planar type exciting electrode affixed to the opposite surface of the dielectric sheet and covering the entire area facing the corona electrode. A high voltage AC power supply energizes the plasma ion source by producing a high AC voltage and being connected to apply the voltage between the corona and the exciting electrode across the dielectric sheet whereby AC surface coronas serving as an active planar type plasma containing copious positive and negative ions are produced by the corona electrode along the one surface of the dielectric sheet and charged materials entering the flow channel inside the duct are bombarded by ions of opposite polarity from the plasma and are rapidly neutralized in charge during passage through the flow channel.

REFERENCES:
patent: 3801869 (1974-04-01), Masuda
patent: 4029995 (1977-06-01), Itoh

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