Ultrasonic Nebulizer Apparatus and Method for Adjusting an Operation Frequency and Checking an Operating State thereof

A method for automatically adjusting an operation frequency to a resonant frequency of an ultrasonic nebulizer apparatus having a vibrating element to atomize a liquid into an aerosol of fine droplets, the method comprising:

• providing a plurality of frequencies to the vibrating element;
• detecting an electrical current passing through a current detecting element respectively corresponding to each of the plurality of frequencies, wherein the current detecting element is positioned before the vibrating element and actively detecting the electrical current;
• determining a resonant frequency at which the corresponding measured current is a maximum value;
• and
• adjusting the operation frequency of the vibrating element corresponding to the resonant frequency.

An ultrasonic nebulizer apparatus for automatically detecting an operating state of the apparatus, the apparatus comprising:

• a power supply for supplying power;
• a vibrating element to vibrate a liquid to form an aerosol of fine droplets;
• a variable oscillator for providing an operation frequency to the vibrating element so as to let the vibrating element vibrates at the frequency;
• a current detecting element positioned between the power supply and the vibrating element for measuring a current passing before the vibrating element and respectively corresponding to the frequency;
• and
• a microprocessor for receiving the current corresponding to the frequency so as to determine whether the current is deviated from a predetermined normal range.

A method for automatically detecting an operating state of an ultrasonic nebulizer, the method comprising:

• providing an operation frequency to the vibrating element;
• measuring a current passing through a current detecting element positioned before the vibrating element and respectively corresponding to the operation frequency;
• and
• determining the measured current whether deviated from a predetermined normal range.

A portable ultrasonic nebulizer apparatus for automatically adjusting an operation frequency of the apparatus corresponding to a resonant frequency, comprising:

• a power supply for supplying power;
• a vibrating element to vibrate a liquid to form an aerosol of fine droplets;
• a variable oscillator for providing a plurality of frequencies to the vibrating element so as to let the vibrating element vibrates at the plurality of frequencies;
• a step-up converter electrically connected with the variable oscillator for converting an input voltage to a boosted voltage to the vibrating element;
• a microprocessor for controlling the plurality of frequencies of the variable oscillator;
• and
• a current detecting element positioned between the vibrating element and the microprocessor for detecting an electrical current passing it and respectively corresponding to each of the plurality of frequencies;
• wherein the microprocessor receives the electrical current corresponding to each of the plurality of frequencies so as to determine the resonant frequency at which the electrical current is a maximum value and adjusting the operation frequency of the vibrating element provided by the variable oscillator corresponding to the resonant frequency.