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Ultrasonic nebulizer for producing high-volume sub-micron droplets

  • US 20040099218A1
  • Filed: 07/14/2003
  • Published: 05/27/2004
  • Est. Priority Date: 11/12/2002
  • Status: Active Grant
First Claim
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1. An ultrasonic nebulizer for producing high-volume sub-micron droplets, comprising:

  • an ac/dc converter for rectifying an ac current to a dc current and providing a dc voltage;

    an oscillator circuit powered by said dc voltage for producing an oscillation signal with a frequency larger than or equal to 3 MHz;

    an amplifying device being connected to said oscillator circuit for amplifying the oscillation signal;

    a nebulization chamber having a lower face for holding a liquid to be nebulized; and

    at least one piezoelectric ceramic oscillator formed on the lower face of said nebulization chamber and being electrically connected to the amplified signal to provide an ultrasonic output to cause nebulization for producing high-volume sub-micron droplets.

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