电磁感应热压辊表面温度均匀性优化设计  

Optimization Design of Surface Temperature Uniformity for Electromagnetic Induction Hot Pressing Roller

作　　者：薛翰 王野平[1] 李晓明 XUE Han;WANG Yeping;LI Xiaoming(School of Mechanical and Energy Engineering,Tongji University,Shanghai 201804,China)

机构地区：[1]同济大学机械与能源工程学院,上海201804

出　　处：《塑料工业》2024年第1期52-58,共7页China Plastics Industry

摘　　要：以线圈内置式的电磁感应热压辊为研究主体,基于电磁场理论和温度场理论,设计了一种有利于提高其温度均匀性的结构,通过在辊内壁安装鼠笼式套筒来分散热源并降低对涡流产生位置的影响,通过在辊体安插导热铜条实现辊体综合热导率的提高并降低辊端与辊中心区的温度差,通过非均匝线圈改变热源位置以使得辊中心区温度均匀性的提高。最后使用Maxwell与Ansys Transient Thermal进行仿真分析,验证了鼠笼式套筒上几乎无涡流产生,并且辊面中心区的温差≤1.58℃、整体加热区域温差<25℃,与优化前相比,整体温差降低146.22℃,优化效果可观,对实际应用和相关技术研究具一定指导意义。This paper focused on the coil-embedded electromagnetic induction hot pressing roller.Drawing upon electromagnetic field theory and temperature field theory,a structure was devised to enhance its temperature uniformity.A squirrel-cage sleeve was installed on the inner wall of the roller to disperse the heat source and mitigate the influence on the generation of eddy currents.The comprehensive thermal conductivity of the roller body was enhanced by inserting heat-conductive copper strips into the roller body,thereby reducing the temperature difference between the roller ends and the central area.The non-uniformly wound coil was utilized to alter the position of the heat source,thereby enhancing the temperature uniformity in the central area of the roller.Finally,Maxwell and Ansys Transient Thermal were employed for simulation analysis to verify the nearly absence of eddy current generation on the squirrel-cage sleeve.The temperature difference in the roller surface central area is≤1.58℃,and the temperature difference in the overall heated area is<25℃.In comparison to the pre-optimized state,there is a substantial decrease of 146.22℃in the overall temperature difference,signifying a noteworthy optimization effect.This has significant implications for practical applications and relevant technical investigations.

关 键 词：电磁感应加热 有限元仿真 温度优化设计 电磁场理论 磁热双向耦合 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业]