本研究利用田口實驗方法及配合Fluent電腦軟體,針對渦流風扇進行噪音最佳化設計。以田口方法,選用對風扇性能影響較大的參數,像上、下進風口大小、流道幾何形狀、入風口間隙、扇葉後掠切線距離,將四個參數作為為變動因子,並各取三個水準。經由Fluent模擬所有案例之後,用田口方法找出噪音最佳化參數組合。將模擬結果與CNC製成的實體案例之實測數據做比較,結果顯示風量誤差在合理的範圍內(8%)。進一步從最佳化組合中,藉由控制因子的水準更新,更新後再做比較,結果顯示噪音改善最高可達6.4%,由41.52 dB降低到39.01 dB。證實本研究建立的方法能有效地降低渦流風扇的風扇噪音,所使用的參數可供工業界設計參考。
The aims of this paper is to study for application of the Taguchi Methods with computer software Fluent, and carries on the noise optimization design for the blower fans. For the Taguchi Methods, four parameters, current inlet, passage geometric contour, entry interval, and fan sectors are selected as variation factors and each factor has 3 levels. An optimal parameter in the objective of noise can be obtained after computer simulation. Compares the results of simulation with experimental data of the cases of the entities made by CNC, the result shows the error of air flow within the rational range (8%). Further form the optimal association, update the level of variation factors, after updating to compare again, the result shows the noise improvement can reach as high as 6.4%, from 41.52 dB reduced to 39.01 dB. Confirms the established method in this study that can reduce the fan noise of the blower fans effectively, the used parameters can be references for industry design.