Dynamic electrostatic filter apparatus for purifying air using electrically charged liquid droplets
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United States of America Patent
Stats
-
Dec 2, 2003
Grant Date -
Oct 23, 2003
app pub date -
Oct 29, 2002
filing date -
May 18, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for removing particles from air, including an inlet for receiving a flow of air, a first chamber in flow communication with the inlet, wherein a charged spray of semiconducting fluid droplets having a first polarity is introduced to the air flow so that the particles are electrostatically attracted to and retained by the spray droplets, and an outlet in flow communication with the first chamber, wherein the air flow exits the apparatus substantially free of the particles. The first chamber of the apparatus further includes a collecting surface for attracting the spray droplets, a power supply, and a spray nozzle connected to the power supply for receiving fluid and producing the spray droplets therefrom. The apparatus may also include a second chamber in flow communication with the inlet at a first end and the first chamber at a second end, wherein particles entrained in the air flow are charged with a second polarity opposite the first polarity prior to the air flow entering the first chamber.
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