A study on thermal fluid flow of magnetron cooling for microwave oven

• Published in: Journal of mechanical science and technology Vol. 33; no. 4; pp. 1915 - 1923
• Main Authors: Park, Dong Ho, Seo, Eung Ryeol, Kwon, Myoung Keun, Lee, Chang Seon
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Mechanical Engineers 01.04.2019; Springer Nature B.V; 대한기계학회
• Subjects: Anodes; Computational fluid dynamics; Control; Cooling; Cooling fins; Cylindrical bodies; Dimpling; Dynamical Systems; Engineering; Flow separation; Fluid flow; Industrial and Production Engineering; Mechanical Engineering; Microwaves; Vibration; Weight reduction; 기계공학; Numerical analysis; Magnetron; Ellipse dimple fin; Heat transfer
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-019-0342-x

A numerical study has been conducted on thermal dissipation fin shape of the magnetron of a microwave oven. The main focus of the study was on reducing the bypass away from cooling air around cooling fins and enhancing the heat transfer around cylindrical anode body with numerical investigation on louver, slit, dimple and bending shape. To optimize the location and the shape of the elliptical dimple, RSM(DOE) was adopted to enhance the thermal dissipation from the cylindrical anode of magnetron. The flow separation around the anode was delayed due to optimized dimple numerically and verified by experimental study. The enhancement of the fin cooling was utilized for cost reduction of the cooling fin by reducing the thickness of the fin from 0.6 mm to 0.5 mm, resulting in weight saving by 16.7 %.