摘要
随着全球变暖加剧,空调系统的制冷需求不断增加。与此同时,电子元件的小型化和集成化趋势导致变频驱动板上功率器件的热负荷显著上升。为解决低功率空调外机中变频驱动板的散热难题,首先建立了现有设计方案的计算流体动力学(CFD)模型,评估其热性能。基于热流分析,提出了一种优化方案,通过调整进风口与出风口的布局,并优化散热器方向,以改善整体散热效果。优化后的设计实现了关键组件最高温度降低36.1℃,所有器件均满足可靠性标准,使得空调系统能够在满频运行条件下保持稳定,避免了因过热导致的性能下降。实验结果表明,通过有效的气流管理,可以显著提升紧凑型电力电子系统的热性能,从而提高空调设备的整体效率和稳定性。
With the intensification of global warming,the cooling demand for air conditioning systems continues to rise.Meanwhile,the miniaturization and integration trends in electronic components have led to a significant increase in thermal loading on power devices mounted on variable frequency drive(VFD)boards.To address the thermal management challenges of VFD boards in low-power air conditioner outdoor units,first established a computational fluid dynamics(CFD)model of the existing design to evaluate its thermal performance.Based on thermal flow analysis,an optimization strategy was proposed,involving adjustments to the layout of air inlets and outlets as well as the direction of heat sinks,aiming to improve overall heat dissipation.The optimized design achieved a temperature reduction of 36.1℃ in critical components,with all devices meeting the required reliability criteria.As a result,the air conditioning system can operate stably at full frequency without performance degradation caused by overheating.Experimental results demonstrate that effective airflow management can significantly enhance the thermal performance of compact power electronic systems,thereby improving the overall efficiency and stability of air conditioning equipment.
作者
战杰
刘畅
马军义
秦永信
王冰
伊兴睿
ZHAN Jie;LIU Chang;MA Junyi;QIN Yongxin;WANG Bing;YI Xingrui(Qingdao Haier Intelligent Building Technology Co.,Ltd.,Qingdao,266103;Qingdao Haier Air Conditioning Electronics Co.,Ltd.,Qingdao,266103;National Engineering Research Center of Digital Home Networking,Qingdao,266103)
出处
《家电科技》
2025年第6期107-111,共5页
Journal of Appliance Science & Technology
关键词
散热
对流换热
空调器
变频驱动
Heat dissipation
Convective heat transfer
Air conditioner
Inverter circuit board
