一种气隙谐振型气介超声换能器

An air-gap resonance type of air medium ultrasonic transducer

本文提出了一种新型的气隙谐振型气介式超声换能器 ,它是利用一圆形挡板 ,在摭挡中心反相区辐射的同时 ,在挡板与辐射板中心区之间构造一个 λ/ 2气隙谐振腔 ,达到消除反相相消作用和增强声辐射的目的。

An new air gap resonance type of air medium ultrasonic transducer is introduced in this paper.The new transducer uses a circular relfecting plate to reflect the radiant wave that comes from the central phase reversal region and to form a λ/2 resonant air gap between the reflecting plate and the central region.The spacious counteraction of the waves is eliminated,the radiant intensity is enhanced and the quality and properties of the transducer are apparently improved with this method.