| 摘要 |
PURPOSE:To absorptively attenuate ultrasonic reflected waves from the surface of a liquid to inhibit the reduction of atomizability, in atomizing said liquid by oscillation formed by an ultrasonic piezoelectric transducer, by providing a member of specified shape for attenuating reflected waves at the upper part of the piezoelectric transducer. CONSTITUTION:A liquid 2, e.g. water, to be atomized is poured in a liquid tank 1, an ultrasonic piezoelectric transducer 3 attached to the bottom of the tank 1 is vibrated by a driving circuit a to atomize the liquid, and the atomized liquid is withdrawn through an ejection opening 5 by an air blast from a blast opening 6. Hereon, a member 7 for attenuating reflected waves made of an elastic body, e.g. rubber or soft synthetic resin, or a metal plate, e.g. stainless steel in ?- shape or inverted ?-shape is attached in a fan or reversed fan shaped state onto the piezoelectric transducer 3. Reflected waves formed by applying ultrasonic oscillation from the transducer 3 onto the surface of the liquid are absorptively attenuated by said member 7. Hence, the reductions of a property of oscillation and the atomizability of the liquid caused by the return of the reflected waves to the piezoelectric transducer 3 are inhibited.
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