高温旋转环境下的电子设备热设计  

Thermal design of electronic equipment under high temperature rotating environment

作　　者：谭雯 沈三民[1] 杨峰 TAN Wen;SHEN Sanmin;YANG Feng(MOE Key Laboratory of Instrument Science and Dynamic Testing,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《现代电子技术》2022年第4期19-22,共4页Modern Electronics Technique

基　　金：国家重点研发计划(2018YFB2003100)。

摘　　要：针对航空发动机轴上的测试电子设备在发动机舱内高温环境下的散热需求,文中设计一种外部隔热和内部吸热相结合的热控制结构来满足电子设备的正常工作需求,确保电子设备在250℃的高温环境中能持续工作60 min,且电子器件的表面温度不超过规定使用的最高温度。相比其他的散热结构,外部隔热结合内部相变的防护结构具有不依赖于环境温度、成本低、结构简单、可随设备一同旋转的优点。采用热仿真软件ANSYS对隔热结构和相变结构建立模型、设定边界条件、添加材料热物理性能参数,然后进行数值模拟。软件仿真结果表明,文中所设计的热防护结构可以满足电子设备工作温度的需要。In view of the heat dissipation requirements of the test electronic equipment on the aeroengine shaft in the engine compartment under the high⁃temperature environment,a thermal control structure combining external heat insulation and internal heat absorption is designed to meet the normal working requirements of the electronic equipment,so as to ensure that the electronic equipment can work continuously for 60 min in the high⁃temperature environment of 250℃,and the surface temperature of electronic devices shall not exceed the maximum temperature specified for use.In comparison with other heat dissipation structures,the protective structure of external heat insulation combing with internal phase change has the advantages of independent of ambient temperature,low cost,simple structure and rotation with the equipment.The thermal simulation software ANSYS is used to model the thermal insulation structure and phase change structure,set the boundary conditions,add the material thermophysical performance parameters,and then conduct numerical simulation.The software simulation results show that the thermal protection structure designed in this paper can meet the needs of the working temperature of electronic equipment.

关 键 词：热设计 电子设备 隔热防护 相变储热 高温旋转环境 热控制 热仿真 

分 类 号：TN03-34[电子电信—物理电子学] TP391.9[自动化与计算机技术—计算机应用技术]