UV-LED辐射模式对表面消毒辐射场均匀度的影响  

Effects of radiation patterns from ultraviolet light-emitting diodes on the uniformity of the radiation field in surface disinfection

作　　者：姚森 江怡清 张莲茜 张连峰 童张法[1] YAO Sen;JIANG Yiqing;ZHANG Lianxi;ZHANG Lianfeng;TONG Zhangfa(School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China;Laboratory of Ecology and Environmental Protection,Research Institute of Tsinghua University in Shenzhen,Shenzhen 518057,China;College of Environmental and Chemical Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]广西大学化学化工学院,南宁530004 [2]深圳清华大学研究院生态与环境保护实验室,深圳518057 [3]南昌航空大学环境与化学工程学院,南昌330063

出　　处：《辐射研究与辐射工艺学报》2024年第2期125-132,共8页Journal of Radiation Research and Radiation Processing

基　　金：深圳市科技计划项目(JCYJ20180306170551939)。

摘　　要：在使用紫外发光二极管(Ultraviolet light-emitting diodes,UV-LED)进行表面消毒时,物体表面会出现部分区域消毒剂量超出必要,部分区域消毒剂量不足的现象。理想的辐射场是物体表面各点的辐射照度相同。为了优化辐射场,建立了辐射场的通用公式,编写VBA程序,实现了对辐射场的数学模拟、分析和优化。对9种UV-LED辐射模式的辐射场进行了实际模拟分析。结果显示:对于由多颗UV-LED组成的光源板,辐射距离与UV-LED间距的比以及UV-LED的辐射模式是辐射场均匀性的决定因素。由于边缘效应,在光源板正下方投影的边长的80%范围内才有可能实现辐射场均匀。当辐射距离和UV-LED间距之比在3~15的范围内时,均匀性良好(最小和最大值的比≥81.8%)。较小的最大发光角的辐射模式在照射距离和UV-LED间距比例偏大的情况下更为适用,反之亦然。When ultraviolet light-emitting diodes(UV-LEDs)are used for surface disinfection,the UV dose in some areas may exceed the required level but be insufficient in other areas.The most ideal radiation field is that with the same irradiance level at each point.In this study,a universal formula for determining the radiation field was derived,and a corresponding VBA program was coded for the mathematical simulation,analysis,and optimization of the radiation field.The radiation fields of nine UV-LED radiation patterns were simulated and analyzed.The results indicate that for a board with multiple UV-LEDs,the ratio of the radiation distance to the UV-LED spacing and the radiation patterns of the UV-LEDs are the key factors that influence the uniformity of the radiation field.Because of edge effects,a uniform radiation field can be reached only within 80%of the edge length projected directly below the UV-LED board.When the ratio of the radiation distance to the UV-LED spacing is within the range of 3 to 15,the uniformity is good(the ratio of the minimum to maximum values≥81.8%).The radiation pattern with a smaller maximum emission angle is good for a relatively higher ratio of the irradiation distance to UV-LED spacing,and vice versa.

关 键 词：辐射模式 紫外发光二极管 不均匀度 辐射场 表面消毒 

分 类 号：O434.2[机械工程—光学工程]