渦卷式壓縮機由於同時具備高效率、高可靠度和低振動噪音等優點，目前已被公認為最具有發展潛力的壓縮機。經過初步評估後，發現頂蓋部份所產生的噪音，是壓縮機主要噪音來源之一，本研究旨在針對頂蓋主要噪音源逆止閥（Check Valve）進行減噪之最佳化設計研究。
首先將針對逆止閥之幾何形狀與尺寸以田口式參數法來進行設計，同時配合實驗求得較佳之設計，而後再導入數值模擬（CFD分析）及理論分析（聲學濾波器法）等方法並加以驗證，以期能更有效率地求出最佳的減噪設計。

The scroll compressor has the characteristics of high efficiency, reliability and low levels of noise and vibration. It has attracted increasing attention in recent years. As noise level become a major measure of compressor quality, efforts have been made to design the compressor with less noise, lower compressor sound level. From preliminary inspection, we found that the part of top cover is a main noise source. The purpose of this study has been focused on the check valve, which contributes most of the top cover noise.
In the study, we first applied Taguchi method on the choices of geometry and size of the check valve. Secondly, we incorporated experiments to obtain and verify the best design. Experimental results were also used to compare with data obtained from numerical simulations(computational fluid dynamics) and theoretical analysis(acoustic filter method). The final goal is to establish the methodology in obtaining the optimal design of noise reduction for the scroll compressor.

中文摘要I
英文摘要II
誌謝III
目錄IV
圖目錄VI
表目錄IX
符號說明X
第一章 緒論1
1.1渦卷式壓縮機的發展1
1.2渦卷式壓縮機的基本架構與壓縮原理1
1.3渦卷式壓縮機的優點2
1.4何謂噪音3
1.5研究的動機與目標4
1.6研究架構5
第二章 逆止閥之初步設計與分析6
2.1前言6
2.2逆止閥6
2.2.1種類與動作原理6
2.2.2目前的設計7
2.3初步測試結果7
2.3.1性能測試8
2.3.2噪音測試8
2.3.3振動測試8
2.4初步減噪設計與分析9
2.4.1渦卷式壓縮機的噪音源9
2.4.2文獻與專利的回顧10
2.4.3初步減噪分析10
2.4.4振動噪音源之衰減12
2.5初步結論13
第三章 田口式參數設計法15
3.1前言15
3.2參數設計15
3.2.1參數的選擇與確定15
3.2.2實驗計畫16
3.3噪音測試實驗17
3.3.1實驗設備17
3.3.2測試操作步驟17
3.3.3測試結果與分析18
3.3.4驗證試驗19
3.3.5結果討論20
第四章 CFD分析與聲學濾波器法22
4.1前言22
4.2CFD分析22
4.2.1頂蓋部分的格點的建立22
4.2.2逆止閥格點的建立22
4.2.3邊界條件與流體性質23
4.3聲學濾波器法24
4.3.1理論基礎24
4.3.2建立模式26
第五章 結果與討論29
5.1CFD分析結果29
5.2CFD分析結果與噪音之間的關係30
5.3聲學濾波器法之噪音大小評估31
5.4聲學濾波器法與噪音之間的關係31
第六章 結論與未來工作33
6.1結論33
6.2未來工作34
附錄A75

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