Negative ion generating apparatus

  • US 6,174,500 B1
  • Filed: 11/16/1998
  • Issued: 01/16/2001
  • Est. Priority Date: 06/02/1998
  • Status: Expired due to Fees
First Claim
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1. A negative ion generating apparatus comprising:

  • a reaction chamber;

    a first electrode disposed within the reaction chamber;

    a second electrode disposed in the reaction chamber and spaced from the first electrode;

    a ventilator drawing gas from a gas inlet and directing the gas through the reaction chamber between the first electrode and the second electrode to generate a gas flow;

    a power supply to supply a voltage across the first electrode and the second electrode configured to induce a corona discharge between the first and second electrodes;

    an outlet opening for outlet of negative ion particles generated by the corona discharge in the reaction chamber; and

    an adjusting damper for narrowing a gas passage area, disposed in and functioning as a nozzle in the reaction chamber, the adjusting damper including a deflector having a first end pivotably connected to an inner surface of the reaction chamber and a freely rotatable second end, and a spring urging the deflector to narrow a gas passage area for controlling velocity of the gas flow, the first electrode being located adjacent to the second end of the deflector, and the second electrode being located closer to the outlet opening than the first electrode.

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