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Method and apparatus for electrostatic spray

  • US 20040050946A1
  • Filed: 08/01/2003
  • Published: 03/18/2004
  • Est. Priority Date: 08/06/2002
  • Status: Active Grant
First Claim
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1. A method of spraying an aerosol spray, comprising:

  • providing a nozzle and an electrode separated by a predetermined distance;

    placing said electrode at a high electrical potential relative to said nozzle, either of positive or negative polarity, thereby creating an electric field between said nozzle and said electrode;

    ejecting a liquid or powder from said nozzle towards said electrode to atomize the ejected liquid or powder into aerosol droplets or particles so that in the applied electric field between said nozzle and said electrode, said electrode being at a predetermined distance from said aerosol droplets or particles, said aerosol droplets or particles obtaining an induced electric charge, which is of the same polarity as the high voltage electrode, and after the aerosol droplets or particles pass the vicinity of said electrode, forming a directed spray of aerosol droplets or particles having a desired shape and with sufficient momentum and electric charge so that said directed spray of aerosol droplets or particles is deposited on a target.

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