真空电子技术Issue(3)：63-69,7.DOI:10.16540/j.cnki.cn11-2485/tn.2025.03.10
应用于材料干燥的多频加热腔体设计
Design of a Multi-frequency Heating Chamber for Material Drying
张伟鑫 1廖崇蔚 1何忠奇 1刘长军 1王传龙 2吴波 2高灵强2
作者信息
- 1. 四川大学,四川 成都 610064||宜宾四川大学产业技术研究院,四川 宜宾 644000
- 2. 四川省宜宾普拉斯包装材料有限公司,四川 宜宾 644007
- 折叠
摘要
Abstract
Polyethylene terephthalate(PET)is a polyester with the largest global production.The current dr-ying method for PET is hot air drying,which has the disadvantages of high energy consumption,low efficiency,and high carbon emission.Microwave heating is suitable for material drying because it can directly act on the inte-rior of the material.It has the characteristics of low energy consumption,high efficiency,and easy-to-realize au-tomatic control.Therefore,drying PET material by using microwave heating has obvious advantages.In order to overcome the problem of microwave uneven heating and prevent PET slices from"thermal runaway,"a uniform field distribution in the cavity is necessary.Accordingly,a special cylindrical cavity for microwave drying of PET slices is designed.Firstly,the resonance frequency of the cavity is calculated by using MATLAB software,and the mode numbers for cavities with different sizes is evaluated.Then the cavity with more modes is simulated u-sing COMSOL software,and the uniformity of field distribution is judged by the temperature coefficient of varia-tion.The radius of the cavity is determined to be 0.17 m and the height is determined to be 0.39 m.And then the effects of the feeder height and the rotation angle on S-parameters are simulated to determine the position of the feeder.The cavity operates within the frequency range of 2.4～2.5 GHz,with S11<-10 dB.Finally,the perform-ance of rotational and multi-frequency heating is jointly simulated using MATLAB and COMSOL,and the results show that the designed cavity has heating uniformity and high efficiency.关键词
微波加热/多频加热/腔体设计/聚对苯二甲酸乙二醇酯/加热均匀性Key words
Microwave heating/Multi-frequency heating/Cavity design/Polyethylene terephthalate/Heat-ing uniformity分类
信息技术与安全科学引用本文复制引用
张伟鑫,廖崇蔚,何忠奇,刘长军,王传龙,吴波,高灵强..应用于材料干燥的多频加热腔体设计[J].真空电子技术,2025,(3):63-69,7.
