Ye Jinghua, Hong Tao, Wu Yuanyuan, Wu Li, Liao Yinhong, Zhu Huacheng, Yang Yang, Huang Kama
College of Electronic and Information Engineering, Sichuan University, Chengdu 610065, China.
College of Electronical Information Engineering, China West Normal University, Nanchong 637002, China.
Materials (Basel). 2017 Jan 24;10(2):95. doi: 10.3390/ma10020095.
Microwaves have been widely used in the treatment of materials, such as heating, drying, and sterilization. However, the heating in the commonly used microwave applicators is usually uneven. In this paper, a novel multi-material turntable structure is creatively proposed to improve the temperature uniformity in microwave ovens. Three customized turntables consisting of polyethylene (PE) and alumina, PE and aluminum, and alumina and aluminum are, respectively, utilized in a domestic microwave oven in simulation. During the heating process, the processed material is placed on a fixed Teflon bracket which covers the constantly rotating turntable. Experiments are conducted to measure the surface and point temperatures using an infrared thermal imaging camera and optical fibers. Simulated results are compared qualitatively with the measured ones, which verifies the simulated models. Compared with the turntables consisting of a single material, a 26%-47% increase in temperature uniformity from adapting the multi-material turntable can be observed for the microwave-processed materials.
微波已广泛应用于材料处理，如加热、干燥和灭菌。然而，常用微波施加器中的加热通常不均匀。本文创造性地提出了一种新型多材料转盘结构，以提高微波炉内的温度均匀性。在一台家用微波炉中分别模拟使用了由聚乙烯（PE）和氧化铝、PE和铝、氧化铝和铝组成的三种定制转盘。在加热过程中，被处理的材料放置在覆盖着不断旋转转盘的固定聚四氟乙烯支架上。使用红外热成像相机和光纤进行实验以测量表面温度和点温度。将模拟结果与测量结果进行定性比较，验证了模拟模型。与由单一材料组成的转盘相比，采用多材料转盘可使微波处理材料的温度均匀性提高26% - 47%。
