作　　者： ; ;

机构地区： 中山大学物理科学与工程技术学院物理系

出　　处： 《压电与声光》 1993年第2期47-50,53,共5页

摘　　要： 对自由压电陶瓷片,组合电声换能器.600W的超声清洗器.1200W的超声发生器的振动模式频率进行了测量及互相比较.在由一对瓷片和其它金属部分构成的组合振子中.轴向模从398kHz下降至31.6kHz.从而低于径向模的谐振频率41.9kHz.在由27个组合振子构成的阵列中.居间频率范围内出现一个轴向和径向的强烈耦合模.超声清洗器水槽中深h的水是一个水声谐振腔,压电振子的谐振条件为h=(2n+1)λ/4. The vibration modes and frequencies of a free piezoelectric ceramic plate, an electro-sound combination transducer, an ultrasonic cleaner of 600W. and an ultrasonic generator of 1200W are mea-sured and compared each other. In a combination vibration transducer consists of a couple of ceramic plates and metal parts, the frequency of axial mode is lowered from 398kHz to 31. 6kHz and is lower than that of the radial one of 41. 9kHz. In an array consists of 27 combination vibrators, a strong coupling mode of axial and radial vibrations presents in the intermediate frequency range. The water with daep h in the bath of ultrasonic cleaner is a hydro-sound cavity, and the resonance condition of piezoelectric resonator is h= (2n + 1)λ/4.

关 键 词： 压电子振子 超声能换器 谐振特性

领　　域： [理学] [理学] [一般工业技术]