摘要
针对圆形LED光源的发热特点,初步设计直线式翅片散热器。利用ANSYS Icepak对其进行热仿真分析,发现散热器中心部位有温度集聚现象。为解决散热器中心的温度聚集,采用极坐标点拟合法建立翅片曲线,将直线式翅片散热器改进为曲线式翅片散热器。建立6种不同偏转角度的曲线式翅片模型并进行热仿真。研究发现当翅片偏转角为40°时晶元芯片温度最低,同时散热器均温效果最好,且散热器质量较轻。制造厂房灯样机并进行温度测试,发现仿真结果与实测结果温度误差小于4%,验证了研究的合理性。
A straight fin radiator was designed for dissipating the working heat of a circular LED lighting-source.According to thermal simulation analysis to straight fin radiator on ANSYS Icepak,it was found that there was high temperature agglomeration in the center of straight fin radiator.In order to solve the problem of temperature accumulation in the center of the radiator,the fin curve was established by the polar coordinate point fitting method,and the linear fin radiator was improved to the curve fin radiator.Six kinds of curved fin models with different deflection angles were established and simulated.The results show that when the radiator fin deflection angle is 40°,the temperature of the chip is the lowest,the effect of radiator temperature equalization is the best,and the weight of radiator is reasonable.The temperature error between simulation and measurement is less than 4%,which verifies the rationality of the research.
作者
饶刚
杨东恒
王威
Rao Gang;Yang Dongheng;Wang Wei(Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)
出处
《电子技术应用》
2020年第5期102-106,共5页
Application of Electronic Technique
关键词
圆形LED光源
曲线式翅片
偏转角
散热器
热仿真分析
circular LED light source
curved fin
deflection angle
radiator
thermal simulation analysis
