摘要
加热不均匀的现象广泛存在于微波加热应用中。对于低损耗介质,微波加热还存在加热效率低的缺点。针对上述问题,文中提出一种新型周期金属阵列,利用其透射电场的可重构性,可有效提高一般有耗介质和低损耗介质的加热性能。通过控制阵列上PIN二极管的通断,改变该金属阵列的电磁波透射性能,从而调控微波腔体中的电场分布,并建立PIN管的通断矩阵,研究不同加热物体在不同通断矩阵下的微波加热效果。多物理场数值计算结果表明:文中所提出的结构能使一般有耗介质的微波加热均匀性和加热效率分别提高65.1%和120.7%,使低损耗介质的加热效率提高91.2%。该方法成本低,易控制,在微波加热的工业应用中具有巨大潜力。
The phenomenon of heating non-uniformity widely exists in microwave heating applications.For low-loss media,mi-crowave heating has the disadvantage of low heating eficiency.In order to solve these problems,this paper proposes a new type of periodic metal array which has reconfigurable transmission electric fields to improve the performance of heating common lossy media and low-loss media effectively.By controlling the On/Off state of PIN diodes on the array,the electromagnetic wave transmission of the metal array is changed to regulate the electric field distribution in the microwave cavity.The On/Off state matrix for PIN tubes is established to study the microwave heating effects of different heating objects.The numerical multiphysics calculation shows that the proposed structure can improve the uniformity and efficiency of heating microwave for common lossy media by 65.1%and 120.7%,respectively,and the heating efficiency of low-loss media can be improved by 91.2%.This method with low cost and simple con-trol has great potentials in the industrial application of microwave heating.
作者
王亚文
张正平
肖玮
WANG Yawen;ZHANG Zhengping;XIAO Wei(College of Big Data and Information Engineering,Guizhou University,Guiyang 550025,China)
出处
《微波学报》
北大核心
2025年第2期72-78,共7页
Journal of Microwaves
基金
国家自然科学基金(62101146)。
关键词
微波加热
有源金属阵列
加热均匀性
加热效率
microwave heating
active metal array
heating uniformity
heating efficiency
作者简介
王亚文,女,1999年生,硕士生。主要研究方向:微波加热;张正平,男,1964年生,博士,教授。主要研究方向:电磁场与微波技术;通信作者:肖玮,男,1994年生,博士,副教授。主要研究方向:微波加热、微波等离子体、微波能的工业应用。E-mail:wxiao@gzu.edu.cn。
