Progressive Orthogonal Optimization Design Method for High Efficiency Axial-flow Blower

Abstract

To solve the problem of excessive design parameters of flow channel during the comprehensive optimization of the axial-flow blower's total pressure efficiency and flux, a progressive optimization design method which is based on the importance of structural parameters is proposed. The accurate numerical simulation model of flow channel is built, verified and updated by experiment results. According to the model, progressive orthogonal optimization design is developed as following steps: the first is axial fan design, then the orthogonal design of the structure parameters of entire flow channel is further advanced. This approach is applied to the optimization design of an axial-flow blower in this paper, and the results show that the uniformity of the flow field in the flow channel is significantly increased and the vertexes spreading in the flow channel are obviously reduced, the flux is increased from 0.145m3/s to 0.171m3/s, and the efficiency increased from 45.47% to 58.13%, it indicates that the method can meet the design requirements well while being efficient.