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| 題 名 | 高速風扇之進氣噪音抑制=Intake Noise Suppression of a High Speed Fan |
|---|---|
| 作 者 | 周世剛; 林益煌; 閻順昌; | 書刊名 | 應用聲學與振動學刊 |
| 卷 期 | 6:2 2014.12[民103.12] |
| 頁 次 | 頁21-30 |
| 分類號 | 446.79 |
| 關鍵詞 | 消音器; 傳遞損失; 進氣噪音; Muffler; Transmission loss; Intake noise; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 本研究針對一高速風扇引致嚴重進氣噪音之典型設備,考慮設備尺寸之限制,使用1 cm厚的吸音棉處理高頻之吸音,而針對設備630 Hz、800 Hz與1,250 Hz之較低頻噪音,利用具插入管之擴張室消音器進行消音,以獲得寬頻之消音效果。藉由實際量測之頻譜分析,調整模擬傳遞損失峰值之最佳化落點,可針對難以消除之低頻噪音進行有效設計,以消除低頻噪音的問題。當未裝置消音器時,原設備之噪音高達80.5 dB(A),裝置了消音器後,降至70.5dB(A),下降10 dB(A),效果顯著,且僅些微降低壓縮氣流之流速,維持原有之設備性能。 |
| 英文摘要 | In this study, a typical device with serious intake noise induced by a high speed fan was considered. The high-frequency components were treated by using 1 cm thick foam absorber in consideration of the size limitation of the equipment. The low-frequency noise components of 630 Hz, 800 Hz and 1,250 Hz were suppressed by using an expansion chamber muffler with extended tubes to enable broadband silencing. From the actual spectral measurements, optimal placement of the transmission loss peaks was realized to effectively suppress the low frequency noise, which was difficult to eliminate in practice. The original noise of the equipment was 80.5 dB(A), which was reduced to 70.5 dB(A) after installation of the silencer, achieving a significant 10 dB(A) reduction. The flow rate of the air supply was only slightly reduced and the original equipment performance was not impaired. |
本系統中英文摘要資訊取自各篇刊載內容。