| 摘要 |
PROBLEM TO BE SOLVED: To provide a nozzle shower type ultrasonic cleaner having high cleaning performance and also a uniform sound field. SOLUTION: An ultrasonic vibrator 2 used for the nozzle shower type ultrasonic cleaner is formed by jointing piezoelectric ceramics to be a piezoelectric element 3 to a metal material on the upside of a housing 5. The dimension of the piezoelectric ceramics for 200 kHz has L of 60 mm, H of 6.5 mm and W of 4.5 mm. A characteristic frequency of an optional mode having only the piezoelectric ceramics is about 240 kHz. COPYRIGHT: (C)2007,JPO&INPIT
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