複合式風扇之數值模擬與分析

本研究針對複合式風扇（軸流扇與離心扇）應用於散熱模組之設計改良與測試探討，藉由改變離心式葉片的長度，對其風壓、風量的影響進行研究與分析。使用SolidWorks Flow Simulation模擬軟體，模擬複合式風扇在改變不同的葉片長度時對風壓與風量的影響，並藉由風洞測試驗證模擬結果，另將風扇搭配散熱模組實測，做散熱分析驗證散熱效果是否也在相同條件下最好，得以分析出產品最佳設計參數，並能有效提升使用壽命及維持電子產品效能。本文風洞量測與模擬複合式風扇轉速設定3500 rpm，改變風扇離心葉片長度分別為6 mm、7 mm、8 mm、9 mm、10 mm，共五組參數做分析，再搭配散熱模組設定加熱功率40 W、50 W、60 W，做散熱分析進行比較，結果顯示，當風扇葉片長度於10 mm時，此時風量為53.4 CFM，熱阻值最低具有最佳的散熱效果。

關鍵字

複合式風扇；散熱模組；離心式葉片

並列摘要

In this study compound fan (axial fan and centrifugal fan) applied to the thermal module design improvements and testing explore. Change the centrifugal blade length, research and analysis of its air pressure, air volume. Use the simulation software SolidWorks Flow Simulation, analog compound fan change to a different blade length air pressure and air volume, by wind tunnel testing and simulation results are compared with the measured thermal module and fan, do thermal analysis to verify whether the cooling effect is also under the same conditions as the best able to analyze the best product design parameters, and effectively increase their service life and maintain the effectiveness of electronic products.This article wind tunnel measurements and simulations compound fan speed setting 3500 rpm, to change centrifugal fan blade length were 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, a total of five groups parameters to the analysis, then with cooling module set the heating power of 40 W, 50 W, 60 W, do thermal analysis to compare, the results show that when the fan blade length of 10 mm, the air volume of 53.4 CFM, the lowest thermal resistance with the best heat dissipation effect.

並列關鍵字

compound fan ； thermal module ； centrifugal blade

國際替代計量

複合式風扇之數值模擬與分析

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