Analysis Of Several Key Problems Of The Microwave Heating On Multi-port Excitation

Microwave technique has been developed rapidly in recent years, its application not only in communications, electronic information and other information field, but also in the interdisciplinary field such as in Chemistry and Chemical Engineering. Understand and master the high-temperature microwave technology is a prerequisite of driving the development of new materials in microwave chemical. One aspect of microwave heating analysis is microwave high-temperature technology and the most widely application is household microwave oven and industrial microwave heating cavity. Coupling, field uniformity and heating efficiency are the key points in the industrial microwave heating cavity. The thesis analyzes the existing model and optimizes it to make these key points meet industrial requirements.Though there are numerous papers about how to design the microwave oven, which from about traditional design by design, manufacture and correct to about using electromagnetic field simulation software, there's little study about multi-port excitation microwave heating. In this thesis, HFSS was used to design and simulate the multi-port excitation microwave heating and several key problems were analyzed based on it. Besides, a new model was used to optimize the results. All these analysis and optimization can be used in the application of industry production.The Features and innovations:(1) The microwave heating in multi-mode cavities with different excitation aperture arrangement was analyzed in the paper.(2) The microwave heating under different load cases were analyzed in the paper.(3) Other cases about multi-port excitation microwave heating were analyzed in the paper. For example, the dual-frequency microwave heating was proposed and the position of excitation port and the microwave leakage of the material entrance were optimized.