姓名 |
徐祥雲(Hsiang-Yun Hsu)
查詢紙本館藏 |
畢業系所 |
機械工程學系在職專班 |
論文名稱 |
迴轉式壓縮機消音罩吐出口位置對壓縮機低頻噪音影響之研究 (Effect of the muffler cover spout position on the low frequency noise of the rotary compressor)
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[Endnote RIS 格式]
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[相關文章] [文章引用] [完整記錄] [館藏目錄] 至系統瀏覽論文 ( 永不開放)
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摘要(中) |
旋轉式壓縮機的消音罩孔位位置對傳遞噪音傳遞有重大影響,為了減少因太多消音罩樣式而造成多次性的實驗,先進行模擬使用COMSOL軟體來模擬,模擬迴轉式壓縮機消音罩傳遞損失,利用消音罩孔位不同,所傳遞損失區域也不盡相同,藉由模擬推導出最適化消音位置,並利用原樣式消音罩與改善後樣式做相互比對確認壓縮機轉速,並相互比較壓縮機在噪音上差異,並比較測試結果。
模擬結果顯示,原樣式與改善品在消音區塊效果,經實驗驗證,噪音測試結果,在噪音方面從低轉速1200RPM開始至7200RPM為止在20Hz~1600Hz區域中最高降低了4dB(A),在20Hz~20000Hz區域中降低最高降低3dB(A) |
摘要(英) |
Muffler cover spout position of a rotary compressor has a tremendous impact on the structural vibration and noise radiation. In this thesis, both numerical and experimental investigations are carried to study the effect of muffler cover spout position. From the numerical simulation, the design variations can be optimized. The experimental validations indicate that sound pressure of the optimized muffler position can be reduced by 3dB(A) in the frequency range of 20Hz-20000 Hz and 1200 to 7200 RPM of the rotary compressor. In the low frequency range of 20Hz-1600 Hz, the sound pressure reduction is 4dB(A). |
關鍵字(中) |
★ 迴轉式壓縮機 ★ R410A冷媒 ★ 消音罩 |
關鍵字(英) |
★ Rotary compressor ★ R410A refrigerant ★ Muffler |
論文目次 |
目錄
摘要....................................................I
Abstract...............................................II
致謝..................................................III
目錄...................................................IV
表目錄................................................VII
圖目錄...............................................VIII
符號說明...............................................XI
第一章 緒論.............................................1
1-1 前言................................................1
1-2 文獻回顧.............................................2
1-3 研究目的與動機.......................................5
第二章 基礎原理與模擬....................................7
2-1 聲音簡介.............................................7
2-1 聲壓................................................7
2-2 A頻率加權............................................8
2-3 反應型消音器.........................................8
2-4 傳遞損失曲線.........................................9
2-5 壓縮機的噪音源......................................10
第三章 實驗方法與實驗設備................................12
3-1 壓縮機原理及構造介紹.................................12
3-2 卡路里熱量計........................................12
3-3 COMSOL介紹.........................................13
3-5 噪音實驗設備........................................14
3-6 條件設定............................................15
3-7 噪音八點平均值......................................15
3-8 消音罩聲壓模擬與測量.................................16
3-9 分析...............................................17
3-10 性能測試步驟.......................................18
3-11 噪音實驗步驟.......................................19
第四章 結果與討論.......................................21
4-1.聲場介質...........................................22
4-2. 改變消音罩的幾何形狀與尺寸..........................23
4-3. 消音罩模擬結果分析.................................23
4-4. 壓縮機噪音測試結果.................................24
第五章 結論與未來展望....................................31
5-1. 結論..............................................31
5-2. 未來展望...........................................31
參考文獻................................................32 |
參考文獻 |
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指導教授 |
傅尹坤(Yiin-Kuen Fuh)
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審核日期 |
2018-7-27 |
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