ATOMIZATION APPARATUS AND METHOD UTILIZING SURFACE ACOUSTIC WAVES

摘要

The specification discloses an ultrasonic atomization apparatus utilizing surface acoustic waves. The atomization apparatus is provided with an oscillator (11) generating surface acoustic waves, and a thin porous sheet (12a) provided on an oscillating surface of the oscillator with a very narrow clearance left there between and having a plurality of through holes. A liquid (19) in a liquid vessel (18) is sucked into the very narrow clearance between the oscillator and thin porous sheet owing to the oscillation occuring due to the surface acoustic waves or owing to a capillary phenomenon. The oscillation of the surface acoustic waves is transmitted to the thin porous sheet (12a) via the liquid in the very narrow clearance, and a very small quantity of liquid permeated into the pores in this thin plate is atomized by the oscillatory force and sprayed to the outside. According to this atomization apparatus, the atomization of a liquid can be carried out by using a battery of a small electric power, and the balance between the feed rate and atomization rate of a liquid can be excellently maintained.