热声制冷机中磁致伸缩换能器设计及特性分析  

Design and characteristic analysis of magnetostrictive transducers in thermoacoustic chillers

作　　者：汪建新[1] 宋春雨 孟楠[1] 范蒙洋 李昭钦 WANG Jianxin;SONG Chunyu;MENG Nan;FAN Mengyang;LI Zhaoqin(School of Mechanical Engineering,Inner Mongolia University of Science&Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学机械工程学院,内蒙古包头014010

出　　处：《兵器材料科学与工程》2024年第6期8-14,共7页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(52266005)。

摘　　要：本文针对传统驱动方式热声制冷机效率低的问题,提出一种用磁致伸缩换能器驱动热声制冷机的设计方案。磁致伸缩换能器作为热声制冷机的驱动器,其输出特性对热声制冷机制冷效果至关重要。基于此对磁致伸缩换能器开展了从超磁致伸缩材料几何参数、激励线圈最佳电磁转换效率和内部磁路3个方面的优化设计研究,最后对换能器输出特性进行了仿真分析。结果表明:在4.6 kHz时位移最大,输出位移达到63μm,满足驱动热声制冷机需求。In this paper,for the problem of low efficiency of the thermoacoustic cooler in the traditional driving method,Proposing a design for driving a thermoacoustic chiller with a magnetostrictive transducer.Magnetostrictive transducer as the driver of the thermoacoustic chiller,its output characteristics of the thermoacoustic chiller cooling effect is crucial.Based on this,the magnetostrictive transducer was optimized in terms of the geometrical parameters of the super magnetostrictive material,the optimal electromagnetic conversion efficiency of the excitation coil and the internal magnetic circuit,finally,the transducer output characteristics were simulated and analyzed.The results show that the maximum displacement is achieved at 4.6 kHz,and the output displacement is up to 63μm,which is sufficient to drive the thermoacoustic chiller.

关 键 词：超磁致伸缩换能器 结构设计 有限元分析 输出特性 

分 类 号：TH12[机械工程—机械设计及理论]