Study of multi-frequency heating based on the nonlinear response characteristics of magnetron to improve uniformity

IF 1.5 4区工程技术 Q4 ENGINEERING, CHEMICAL Journal of Microwave Power and Electromagnetic Energy Pub Date : 2023-01-02 DOI:10.1080/08327823.2023.2166003

Mengna Du, Zihao Zhang, Jie Huang, Huacheng Zhu, Yang Yang

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引用次数: 2

Abstract

Abstract The majority of microwave ovens on the market are powered by magnetrons, which can only produce a narrow-band frequency that has a large peak, resulting in poor uniformity. A method is proposed to improve nonuniform heating based on nonlinear response characteristics of the magnetron to produce multi-frequency. First, a multi-physics model of microwave heating is established to realize the calculation of multi-frequency heating. Second, a multi-frequency heating experimental system based on the characteristics of the magnetron is built and verified with the calculated results. The results show that the calculated results are in good agreement with the experimental results. Finally, based on the multi-physics model, the influences of different parameters, such as frequency intervals, cavity size, location of the object to be heated and material properties, on microwave heating uniformity have also been discussed. The results show that the method adopted in this paper is feasible, and the heating uniformity of microwaves is improved.

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基于磁控管非线性响应特性的多频加热改善均匀性研究

市场上的大多数微波炉都是由磁控管供电，只能产生峰值较大的窄带频率，导致均匀性差。基于磁控管的非线性响应特性，提出了一种改善磁控管非均匀加热产生多频的方法。首先，建立了微波加热多物理场模型，实现了多频加热的计算。其次，根据磁控管的特性建立了多频加热实验系统，并与计算结果进行了验证。结果表明，计算结果与实验结果吻合较好。最后，在多物理场模型的基础上，讨论了频率间隔、空腔尺寸、被加热物体位置和材料性质等参数对微波加热均匀性的影响。结果表明，本文所采用的方法是可行的，提高了微波加热的均匀性。

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来源期刊

Journal of Microwave Power and Electromagnetic Energy ENGINEERING, CHEMICAL-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

2.50

自引率

6.70%

发文量

期刊介绍： The Journal of the Microwave Power Energy (JMPEE) is a quarterly publication of the International Microwave Power Institute (IMPI), aimed to be one of the primary sources of the most reliable information in the arts and sciences of microwave and RF technology. JMPEE provides space to engineers and researchers for presenting papers about non-communication applications of microwave and RF, mostly industrial, scientific, medical and instrumentation. Topics include, but are not limited to: applications in materials science and nanotechnology, characterization of biological tissues, food industry applications, green chemistry, health and therapeutic applications, microwave chemistry, microwave processing of materials, soil remediation, and waste processing.