Abstract: An air ionizing device that prevents contaminant buildup on the electrodes, comprising a housing that includes a low pressure plenum that meters dry gas to flow near an electrode, and the electrode is surrounded by an annular shaped shroud. The housing and shroud are configured to provide a laminar flow of dry gas around the electrode, such that moist room-air is prevented from reaching the electrode during ionization. The device may further include a plurality of electrodes and shrouds spaced laterally along an elongate housing, and a high pressure plenum to distribute gas at a plurality of locations to the low pressure plenum. A plurality of mounting bars connect each of the electrodes to wiring inside the low-pressure plenum, the wiring routed to a high voltage power supply. The outside of the housing is formed of smooth concave-shaped surfaces to avoid interfering with existing room-air flow. The air-ionizing device is low maintenance and inexpensive to manufacture.

Abstract: An air ionizing device that minimizes interference with existing room-air flow and lighting, comprising a narrow enclosed housing of an insulating material having intake openings and vent openings. Disposed inside the housing is a fan that takes room-air axially through the openings in the housing, and disperses the air radially. The room-air collects inside the housing until the capacity is reached, and then flows downwardly in a laminar fashion sufficiently near a plurality of electrodes to be ionized. The ionized air exits through vents in the housing and is directed towards the workbench. The housing may be extruded to many different lengths, and include a plurality of fans. Sections of the housing may be attached together to span across a long workstation. A conductive rail runs the length of the housing to electrically connect the electrodes. The outside of the housing is formed of smooth concave-shaped surfaces to avoid interfering with existing room-air flow.

Abstract: An air ionizing ring that provides a flow of ionized gas, comprising a housing having an inlet side and an inlet opening, and a cap that releasably attaches to the inlet side of the housing. When a supply of pressurized gas comes between the housing and the cap, the cap is partially released and the gas flows through the inlet opening. The gas flows sufficiently near a plurality of electrode mounted to the housing and electrically connected to a high voltage power source. Ionization occurs and the ionized gas flows towards the workstation. The cap is fabricated from an elastic plastic material designed to deflect away from the housing allowing the pressurized gas to flow. The housing and cap are designed for facilitate gas flow through the inlet opening. The device is simple and inexpensive to manufacture.