| 摘要 |
PROBLEM TO BE SOLVED: To enable efficient atomization by restricting a liquid in a fixed region in an elastic surface wave atomizer. SOLUTION: The elastic surface wave atomizer 1 is equipped with an oscillator 3 consisting of a piezoelectric material where two interdigital electrodes 2 for generating elastic surface waves w1, w2 are formed on the surface S. Each interdigital electrode 2 is structured by almost concentrically arranging bamboo blind-shaped electrodes 21 having an almost arc shape. A pair of the interdigital electrodes 2 are formed on the surface S of the piezoelectric material (the oscillator 3) so that their projecting parts faces each other and they are spaced from each other. A surface region located in the middle of the interdigital electrodes 2 exciting the elastic surface waves w1, w2, which are diverging waves, is a region having a small vibrational energy density of the elastic surface waves from both of left and right interdigital electrode 2, and is a stable force balancing point. When liquid 4 supplied to the force balancing point approaches either one of the interdigital electrodes 2, force is applied to the liquid in the direction of returning to the force balancing point, so that the liquid is restricted in the region and atomized efficiently. COPYRIGHT: (C)2009,JPO&INPIT
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