臺灣博碩士論文加值系統

本研究以實驗的方式，探討衝擊噴射冷卻方式提供給旋轉機械較高效率冷卻機制的可能性。實驗是在正常的環境狀態下，利用傳統冷卻方式的直流馬達在固定負載狀況下，轉速分別以3000rpm, 3500rpm, 4000rpm, 4500rpm的穩定運轉時，和採用噴射冷卻方式所量測得的機體表面溫度變化情形比較，用以判斷直流馬達散熱情形的優劣。另一個部份則是模擬較高溫或冷卻環境較差的時候，在上述相同運轉狀態時兩種冷卻狀態的比較。本實驗研究在直流馬達部分完全不改變其原有之構造，僅在冷卻風扇與冷卻通道之間加裝不同孔數之隔板，用以蓄積冷卻流體之壓力後，再經孔噴出，形成增壓之噴射流場，用以冷卻通道內的轉子與定子相關構件，並利用熱電耦量測馬達表面溫度變化之情形。實驗結果顯現在多排多孔數的噴射冷卻狀況時，直流馬達在四種不同的轉速運轉狀況下，外表的溫度皆有明確的下降，顯見此冷卻方式確有實際更佳之效用。

In this study, use the experiment to explore the impact of jet cooling provided to the possibility of rotating machinery more efficient cooling mechanism. The Experiments are under normal environmental conditions using the conventional cooling DC motor at a fixed load conditions. The purpose of the experiment is to check the cooling ability of a motor by compare the temperature of the surface when we use effusion cooling in steadily rotational speed on 3000rpm, 3500rpm, 4000rpm, 4500rpm. In another experiment we do the experiment in the simulation of higher temperature and terrible cooling condition in steadily rotational speed. This study does not change at the motor part of its original structure, between the cooling fan and the cooling channel to install only the number of separator different holes for the cooling fluid of the pressure after the accumulation, and then eject hole to form booster The jet flow field for the rotor and stator cooling passage related components, and use the case of a thermocouple to measure the surface temperature of the motor. The results appear in a multi-row spray cooling condition of the porous number, the motor speed in four different operating conditions, the appearance of the temperature drops, evident in this way that there actually better cooling of the utility.

目錄
中文摘要…………………………………………………………………I
英文摘要………………………………………………………………...II
誌謝…………………………………………………………………….III
目錄……………………………………………………………………..IV
圖目錄…………………………………………………………………...V
第一章 緒論……………………………………………………………..1
1-1前言…………………………………………………………………...1
1-2 文獻回顧…………………………………………………………….3
第二章 實驗的方法與設備
2-1 實驗方法…………………………………………………………….8
2-2 實驗設備……………………………………………………………..9
2-3 橫隔噴射擋板………………………………………………………10
2-4實驗步驟…………………………………………………………….12
2-5實驗過程及照片……………………………………………………14
第三章 實驗結果與討論
3-1 實驗結果與討論…………………………………………………...19
3-2 模擬直流馬達處於冷卻不良的狀況……………………………...26
第四章 結論
4-1 結論………………………………………………………………...34
參考文獻 ………………………………………………………………35

1.T.L. Yang, S.F. Chiou and S.W. Chang " Heat Transfer of Rotating Annular Flow for Electrical Machine – Part (I): Static Annulus”Maritime Research Journal，Vol.15, pp129-143, Oct. 2003
2.P.L. Greaves, R.I. Grosvenor and B.W. Martin " Factors Affecting the Stability of Viscous Axial Flow in Annuli with a Rotating Inner Cylinder " International Journal of Heat and Fluid Flow, Vol.4, Issue 4, pp.187-197, Dec. 1983
3.F. M. White, “ Viscous Fluid Flow ”, McGraw-Hill, 2nd Edition, ISBN 0-07 069712-4, P. 111-113, 1991
4.C.C. Wan, J.E.R. Coney, “An Investigation of Adiabatic Spiral Vortex Flow in Wide Annular Gaps by Visualization and Digital Analysis “Int. J. Heat and Fluid Flow, Vo1.3, No.1, P39-44, 1980
5.C.C. Wan, J.E.R Coney, “Transition Modes in Adiabatic Spiral Vortex Flow in Narrow and Wide Annular Gaps” Int. J. Heat and Fluid Flow, Vo1.2, No.3, P131-138, 1980
6.C.C. Wan, J.E.R. Coney, “An Experimental Study of Adiabatic Spiral Vortex Flow “Int. J. Heat and Fluid Flow, Vo1.3, No.1, P31-38, 1982
7.R.J. Donnellyand, D. Fultz, ”Experiments on the Stability of Spiral Flow Between Rotating Cylinders” Pro. N.A. Physics Vo1.46, P1150-1154, 1960
8.蔡瑞益，黃世嘉 "二維對稱噴流對電子元件熱點衝擊冷卻之熱傳機制研究" 中原大學機械工程學系碩士學位論文，民國92年6月
9.鄭澤明，曾憲中，徐睿 "旋轉圓柱體於側面衝擊噴流下之熱傳特性研究" 建國科技大學機械工程系暨製造科技研究所，民國92年6月