铝管式油冷器横向磁通感应加热线圈研究

为了实现铝管式油冷器的横向磁通感应加热技术(TFIH),并解决传统平面线圈存在的管端溶蚀和合格率低问题,设计了一种新型锥形线圈来替代传统平面线圈.通过COMSOL软件基于变物性条件进行电磁-热耦合仿真,分析了铝管式油冷器的温度分布、升温曲线、电流密度分布和焦耳热分布情况,并分析了锥角对加热效果的影响.结果 表明,铝管式油冷器在新型锥形线圈下具有较好的温度分布,避免了管端溶蚀并且合格率在95％以上.使用温度传感器对管端温度进行监控,耦合仿真的相对误差在4％以内,结果表明耦合仿真具有一定的精度.此项研究可以指导工业设计及生产,为铝管式油冷器提供了TFIH线圈解决方案.

Research on Transverse Flux Induction Heating Coils for Aluminum Tubular Oil Cooler

In order to realize the transverse flux induction heating (TFIH) of aluminum tubular oil cooler, and to solve the problem of the erosion of pipe end and low pass rate of the conventional plane coil, a new conical coil is designed to replace the conventional plane coil. The electromagnetic-thermal coupling simulation was carried out by COMSOL software based on variable physical properties, the temperature distribution, heating curve, current density distribution, joule heat distribution of aluminum tubular oil cooler and influences of conical angle on heating effect are analyzed. The results show that aluminum tubular oil cooler has a good temperature distribution under the new conical coil, avoiding the erosion of pipe end and the pass rate is above 95%. The pipe end temperature is monitored by temperature sensor, and the relative error of coupling simulation is less than 4%. The results show that the coupling simulation has a certain accuracy. This study can guide industrial design and production, and provide TFIH coil solutions for aluminum tubular oil cooler.