用于强吸波材料均匀性加热的微波加热结构  

Microwave Heating Structures for Uniform Heating of Strong Absorbent Materials

作　　者：王权 张纪芳 杨欣辉 黄宁 薛满康 陈华[1] 方青 WANG Quan;ZHANG Jifang;YANG Xinhui;HUANG Ning;XUE Mankang;CHEN Hua;FANG Qing(Faculty of Science,Kunming University of Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学理学院,昆明650500

出　　处：《吉林大学学报（理学版）》2024年第6期1471-1478,共8页Journal of Jilin University:Science Edition

基　　金：云南省科技厅面上项目(批准号:202201AT070202);云南省基础研究计划项目(批准号:202201AU070144,202301BE070001-005).

摘　　要：针对微波加热均匀性问题,基于缝隙阵列天线理论设计一种新型的曲面缝隙波导加热结构.结果表明:该设计通过多缝隙辐射的电场随机叠加方式改善了加热腔内的电场均匀性,曲面结构设计使其更易与圆柱形加热腔体进行共形,同时减小整个微波加热器的体积;在对厚度为5 mm的橡胶加热20 s后,温度差异系数(COV)达到0.56,相比于相同功率密度的传统箱式微波加热装置,温度差异系数提高了60%,均匀性得到较好改善.Aiming at the problem of microwave heating uniformity,we designed a new curved slot waveguide heating structure based on the theory of slot array antenna.The results show that the design improves the electric field uniformity inside the heating cavity through random superposition of the electric fields radiated by multiple slots.The curved surface structure design makes it easier to conformally align with the cylindrical heating cavity,while reducing the volume of the entire microwave heater.After heating the rubber with a thickness of 5 mm for 20 s,the temperature difference coefficient(COV)reaches 0.56,which is 60%higher than the traditional box type microwave heating device with the same power density,and the uniformity is better improved.

关 键 词：曲面波导 缝隙阵列 Taylor分布 微波加热 

分 类 号：TM924.76[电气工程—电力电子与电力传动]