改善大功率超声清洗声场均匀性的一种方法

Method for Improving Sound Field Distribution of High- power Ultrasonic Cleaning

根据声波的叠加理论及清洗槽内形成驻波场的特点,把换能器布阵在清洗槽的两侧对射,使对射距离始终保持整数倍的四分之一波长。在大功率实用状态下,研究测试深度方向和水平方向的声场分布,用亚甲基蓝水溶液经超声辐射,在铜版纸上真实记录声场的分布情况。结果表明,与传统的槽底辐射相比,这种方法大大改善了清洗槽水平方向的声场均匀性,且深度方向的声场均匀程度也有明显的改善。

Based on the superimposing theory of sound wave and the standing wave characteristic of forming in clean basin, the transducers are distributed on two opposite faces of clean basin with radiation each other and the distance of radiation is maintained integer times of quarter wavelengths. It's acoustic field distribution in the directions of depth and horizontal has been studied by experiment and recorded on copperplate by means of aqueous solution of blue dye with ultrasonic radiation in highpower scale. The results show that compared with the radiation of clean basin base,the acoustic field uniformity in direction of horizontal and depth are well improved by this method.