小型轴流式吹风机结构优化设计研究

Research on structural optimization of small axial flow blower

吹风机的设计综合了多种结构关系,其试验设计过程缺少规律性,设计成本较高。吹风机的结构设计参数决定其工作性能,采用计算流体力学的方法,分析风扇和马达轴向距离、风扇和风筒间隙以及风筒的轴向长度三种不同参数对吹风机出口风速的影响规律。在单因素分析的基础上进行Box-Behnken试验设计,引用响应面分析法求回归方程,以出口风速最高为优化目标,得到吹风机性能最优的结构参数。

The design of blowers integrates a variety of structural relationships, and the design by experiment lacks regularity and has high design costs. The parameters of blower structural determine its performance. By using the method of computational fluid dynamics, the influences of three different parameters on the wind speed at the outlet of blower are analyzed, such as the axial distance between fan and motor, the clearance between fan and blower, and the axial length of blower. Basis on the univariate analysis, Box-Behnken test design was carried out, the regression equation was obtained by using Response Surface Methodology(RSM), and the optimal structural parameters of blower performance were obtained by taking the maximum outlet wind speed as the optimization objective.