Development of a novel flattened magnetron for household microwave oven

ABSTRACT

This paper presents a design scheme of a Novel Flattened Magnetron for Household Microwave Oven, which makes a breakthrough in the magnetic circuit of the existing magnetron and adopts the symmetrical enhanced magnetic circuit design scheme. Magnetron width has been successfully reduced from 80 mm to 50 mm. The reduction is up to 37.5%. Based on the size of the flattened magnetic circuit system, the theory of magnetron noise, and the knowledge of LC low-pass filters, a filtering structure for the flattened magnetron is proposed. Electromagnetic simulation shows that the magnetron with the new magnetic circuit structure can still meet the design specifications of the magnetron used in the existing microwave oven. An experiment was conducted to verify the proposed design's performance, and it was found to be similar to the existing conventional magnetron.

KEYWORDS:

• Household microwave oven
• Flattened magnetron
• New magnetic circuit

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

The data that support the findings of this study are available from the authors upon request.

Additional information

Funding

This work was supported in part by the National Natural Science Foundation of China (No. 62271113), National Key Research and Development Program of China (No. 2019YFA0210202) and Fundamental Research Funds for the Central Universities (No. ZYGX2019Z006), the Natural Science Foundation of Sichuan Province (No. 2022NSFSC1848, No. 2023NSFSC1376).

Notes on contributors

Hailong Li

Hailong Li is with School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Wenlong Li

Wenlong Li is with School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Dongdong Xie

Dongdong Xie is with School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Shibin Xu

Shibin Xu is with Guangdong Witol Vacuum Electronic Manufacture Co., Ltd., Foshan, 528311, China.

Xiangwei Tang

Xiangwei Tang is with Guangdong Midea Microwave and Electrical Appliances Manufacturing Co., Ltd., Foshan, 528311, China.

Safi Ullah

Safi Ullah is with School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Abdur Rauf

Abdur Rauf is with School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Liangjie Bi

Liangjie Bi is with School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Bin Wang

Bin Wang is with School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Yong Yin

Yong Yin is with School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Lin Meng

Lin Meng is with School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.