Control of Microwave Heating in Rectangular Waveguide and Rectangular Cavity

矩形波导和矩形腔内微波加热的控制

基本信息

批准号：
15560176
负责人：
AOKI Kazuo
金额：
$ 2.24万
依托单位：
Nagaoka University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560176/
关键词：
Microwave heating Rectangular waveguide Cavity Electromagnetic field Interference Optimum condition 導波管

项目摘要

Microwave heating has the features in a transmission, absorption and reflection of an electromagnetic wave. The performance of the heating strongly depends on the interference of the transmitted wave and reflected wave in materials. Using the microwave of TE_<10> mode and frequency of 2.45GHz in a rectangular waveguide and a rectangular cavity, we have investigated two effects of a reflecting plate and an incident wave control plate on the characteristics of microwave heating.The results obtained here are summarized as follows ;(1) In the normal case without the reflecting plate, the quantity of heat generation has peaks at the resonance states, corresponding to the integer multiple of half wavelength of the sample. The quantity of heat generation increases when a reflecting plate is installed in the best position. However, as the sample length becomes longer, the effect of a reflecting plate becomes smaller because of a damping of microwave.(2) In order to avoid the reflection on the surface of the sample, it is available to attach a low dielectric material on the sample. By attaching the wave control plate having the optimum relative permittivity and having a quarter wavelength in thickness, the quantity of heat generation increases, comparing with the normal heating.(3) In order to clarify the optimization of microwave heating in a rectangular waveguide, we proposed two procedures attaching a reflecting plate and an incident wave control plate to the sample and indicated the guideline for the optimization of microwave heating by controlling reflected and transmitted waves.(4) For microwave heating in a rectangular cavity, we similarly proposed two procedures attaching a reflecting plate and an incident wave control plate to the sample and indicated the guideline for the optimization of microwave heating by controlling reflected and transmitted waves.

微波加热具有电磁波的传播，吸收和反射的特征。加热的性能在很大程度上取决于材料中传输波和反射波的干扰。使用TE_ <10>模式的微波和2.45GHz在矩形波导和矩形腔中的频率，我们研究了反射板和入射波控制板对微波加热的特征的两个影响。（1）在正常情况下；（1）在反射板中均具有相对量的量，均具有相对量的量，该量是峰值的。样品的波长。当将反射板安装在最佳位置时，热量产生的数量会增加。但是，随着样品长度变长，由于微波炉的阻尼，反射板的效果变得较小。（2）为了避免样品表面的反射，可以在样品上连接低介电材料。通过连接具有最佳相对介电性并具有四分之一波长的波浪控制板，与正常加热相比，热量产生的数量增加。（3）为了阐明在矩形波导中的微波加热优化，我们提出了两次在反射板和指示的指示下的指示，并指示了反射板的最佳连接，并指示了反射板的调整，并将其置于反射板的转移。波（4）对于矩形腔中的微波加热，我们类似地提出了两个程序，将反射板和入射波控制板附着在样品上，并指出了通过控制反射和透射波的微波加热的指南。