ACOUSTIC SURFACE WAVE ATOMIZER

摘要

PROBLEM TO BE SOLVED: To stably atomize a large number of particulates with less power consumption while keeping the balance between an amount of fed liquid and an amount of atomization in an acoustic surface wave atomizer.

SOLUTION: An acoustic surface wave atomizer 1 is provided with a piezoelectric transducer 2 which includes a pair of interdigital electrodes 21 and generates acoustic surface waves by applying high-frequency voltage to the interdigital electrodes 21 and a liquid feeding means 3 which feeds a liquid to the surface S of the piezoelectric transducer 2, and atomizes the liquid fed to the surface S of the piezoelectric transducer 2 by the liquid feeding means 3 by the acoustic surface waves w formed on the surface S. The liquid feeding means 3 is provided with a liquid film forming member 30 forming a film forming gap G for distributing the fed liquid on the surface of the piezoelectric transducer 2 in a film form. The film forming gap G is shaped so that the length b in the direction of movement x of the acoustic surface waves w is shorter than the length a in a width direction y orthogonal to the direction of movement x of the acoustic surface waves w formed on the surface S of the piezoelectric transducer 2.

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