空调轴流风叶叶尖颤动抑制方案的研究及应用

Research and application of axial-flow fan blade tip vibration suppression scheme for air conditioners

轴流风叶由于其显著的大流量和高效率特性,对于在空调室内部分的应用呈现出极大的潜力。针对某一空调室内侧的轴流风叶在运行中存在的噪声值和声品质问题,采用流固耦合仿真技术对轴流风叶的受力和变形情况进行深入分析研究,并对变形较大的叶尖部分进行截面优化。研究结果表明,采用压力面增强部的轴流风叶新设计方案,能够显著减小叶尖处的变形量,有效降低轴流风叶的噪声值和OA差。

The axial flow fan,distinguished by its high efficiency and substantial flow rate,emerges as a viable selection for indoor air conditioning applications.Nonetheless,certain categories of axial flow fans could potentially exhibit issues related to noise levels and sound quality during operation.To mitigate these concerns,the employment of a fluid-structure interaction simulation was necessitated for the analysis of stress and deformation in the axial flow fan.The findings revealed a requisite optimization of the blade tip's cross-section,particularly those with significant deformation.Subsequent results indicated that the novel design of the axial flow fan,incorporating reinforced components,substantially diminished the deformation at the blade tip.This effectively led to a reduction in the noise level and the Overall Level difference of the axial flow fan,thereby enhancing its operational efficiency.