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Method and apparatus for moving, filtering and ionizing air

  • US 6,228,149 B1
  • Filed: 01/20/1999
  • Issued: 05/08/2001
  • Est. Priority Date: 01/20/1999
  • Status: Expired due to Fees
First Claim
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1. An apparatus for moving air, comprising:

  • a housing having a tubular potion, an inlet end adapted to receive air and an outlet end adapted to exhaust air;

    a needle electrode disposed with said housing and extending in a longitudinal direction;

    a net electrode disposed within said housing on an outlet side of said needle electrode and extending in a transverse direction; and

    a power supply coupled to said needle electrode and to said net electrode and configured to apply a potential difference between said needle electrode and said net electrode to form a longitudinally asymmetric electric field capable of ionizing air molecules and accelerating air molecules toward the outlet end of the housing, thereby producing an air flow from the inlet end to the outlet end of said housing, wherein;

    a distance L2 from the inlet end to a tip of said needle electrode is in the range between 0.7 and 1.5 times an interior transverse linear dimension DT of the tubular portion of said housing;

    a distance L3 from the inlet end to a closest surface of said net electrode is in the range between 1.3 and 2.0 times said dimension DT; and

    a length LH of said housing in the longitudinal direction is in the range between 2.5 and 4 times said dimension DT.

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