초록 ▼

An ultrasonic aerosol apparatus having a piezoelectric element which generates ultrasonic signals in response to signals received from an oscillating circuit, where the temperature of the piezoelectric element is controlled by an electronic device such as an N.T.C. thermistor. The temperature contro

An ultrasonic aerosol apparatus having a piezoelectric element which generates ultrasonic signals in response to signals received from an oscillating circuit, where the temperature of the piezoelectric element is controlled by an electronic device such as an N.T.C. thermistor. The temperature control device senses the temperature of the piezoelectric element and controls the power fed to the oscillator circuit in accordance with the temperature of the piezoelectric element. Rather than cut power completely to the oscillator circuit (thereby interrupting the atomization process of the apparatus), the temperature control device reduces power fed to the oscillator circuit when the piezoelectric element temperature rises above a predetermined value, and increases power fed to the oscillator circuit when the piezoelectric element temperature falls below a predetermined value. Leakage of liquids (e.g., water or medication) contained within the apparatus is avoided by the lack of joints in the liquid-holding apparatus containers. The piezoelectric element may be ceramic, and may be supported by an elastic element which itself may act as an electrical connection between the piezoelectric element and the temperature control device.

대표청구항 ▼

[ I claim:] [15.] An ultrasonic aerosol apparatus comprising:an oscillator circuit;a piezoelectric element having a temperature, the piezoelectric element being connected to a transistor via a capacitor, anda protective device responsive to the temperature of the piezoelectric element, said protecti

[ I claim:] [15.] An ultrasonic aerosol apparatus comprising:an oscillator circuit;a piezoelectric element having a temperature, the piezoelectric element being connected to a transistor via a capacitor, anda protective device responsive to the temperature of the piezoelectric element, said protective device reducing power to the oscillator circuit as the temperature of the piezoelectric element increases and increasing power to the oscillator circuit as the temperature of the piezoelectric element decreases.