关键词: 磁力耦合器, 温度场仿真, 最大热功耗, 轴流式风机, 离心式风扇

Abstract: To address the issue of low heat dissipation efficiency in existing magnetic couplers that use a combination of metal wire protective mesh and heat dissipation fins,a combined heat dissipation structure comprising a " quasi-axial flow fan" and a " centrifugal fan" is proposed. Based on the maximum thermal power consumption of the magnetic coupler ( 4 / 27 of the rated power ) , the design and calculation for the blades of both fan types were completed. By establishing a temperature field simulation model, the heat dissipation effects of heat sink fin inclination angles of 45° and 60° were compared and analyzed, and the overall thermal performance after integrating the centrifugal fan was evaluated. The simulation results indicate that under maximum thermal power conditions,the heat dissipation effectiveness of fins with a 45° inclination angle is superior to that of 60° . Furthermore,the integration of the centrifugal fan further enhances the system's heat dissipation efficiency. The temperatures of key components: the heat source cage bars at 161℃ , the heat dissipation fins at 157 ℃ ,the permanent magnets at 51 ℃ ,and the bearings at 55 ℃ ,all meet the allowable temperature requirements.

Key words: magnetic coupler, temperature field simulation, maximum thermal power consumption, axial fan, centrifugal fan