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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 鍾添東(Tien-Tung Chung) | |
dc.contributor.author | Chia-Chi Chang | en |
dc.contributor.author | 張家齊 | zh_TW |
dc.date.accessioned | 2021-06-17T01:20:05Z | - |
dc.date.available | 2025-02-18 | |
dc.date.copyright | 2021-02-20 | |
dc.date.issued | 2021 | |
dc.date.submitted | 2021-02-17 | |
dc.identifier.citation | [1] R. Dearn, 'The fine art of gear pump selection and operation,' World Pumps, pp. 38-740, June 2001. [2] Hydraulic Pneumatics, 'Hydraulic Pumps,' Fluid Power Handbook Directory, pp. 119-127, 1998-1999. [3] A. E. Brown, 'Rotary positive displacement machines,' U. S. Patent 3,472,445, October 14, 1969. [4] A. E. Brown, 'Rotary positive displacement machines,' U. S. Patent 4,224,016, September 23, 1980. [5] H. Wycliffe, 'Mechanical pumps,' U. S. Patent 4,504,201, March 12, 1985. [6] D. A. Turrell, 'Vacuum pump systems,' U. S. Patent 4,934,908, January 19, 1990. [7] R. Garczorz, 'Rotary piston machine with three blade rotors,' U. S. Patent 6,364,642, April 2, 2002. [8] C. F. Hsieh, Y.W. Hwang, and Z.H. Fong, 'Study on the tooth profile for the screw claw-type pump,' Mechanism and Machine Theory, vol. 43, pp. 812-828, 2008. [9] C. F. Hsieh, 'Study of the geometric design and gas port of the claw-type rotor,' J. Mechanical Engineering Science, vol. 223, part C, 2009. [10] T. T. Chung, 'Methods for designing lobe-type rotors,' U. S. Patent 7,565,741, July 28, 2009. [11] W. K. Fan, 'Design and analysis of a new claw vacuum pump,' M.S. thesis, National Taiwan University, Taipei, Taiwan, July 2008. [12] L. Y. Kung, 'Clearance and leakage analysis of a liquid pump with claw rotors,' M.S. thesis, National Taiwan University, Taipei, Taiwan, July 2011. [13] C. G. Fu, 'Design of a liquid pump with new claw rotors,' M.S. thesis, National Taiwan University, Taipei, Taiwan, July 2009. [14] T. L. Hsu, 'Device of a pair of claw-type rotors having same profiles,' U. S. Patent 20140102233, April 17, 2014. [15] P. K. Chao, 'Development of new claw rotor profiles with variable trochoid ratio epicycloid curves,' M.S. thesis, National Taiwan University, Taipei, Taiwan, July 2013. [16] H. H. Wu, 'Development of new claw rotor profiles with deviation function curves,' M.S. thesis, National Taiwan University, Taipei, Taiwan, July 2013. [17] S. C. Tsai, 'Development of new claw rotor profiles with involute curves,' M.S. thesis, National Taiwan University, Taipei, Taiwan, July 2016. [18] F. L. Litvin, Theory of Gearing. NASA Reference Publication 1212, 1989. [19] C. F. Hsieh, “A new curve for application to the rotor profile of rotary lobe pumps,” Mechanism and Machine Theory, vol. 87, pp. 70-81, 2015. [20] J. Wang, “Geometric study and simulation of an elliptical rotor profile for roots vacuum pumps,” Vacuum, vol. 153, pp. 168-175, 2018. [21] N. D. Manring, “Measuring pump efficiency: uncertainty considerations,” Journal of Energy Resources Technology, vol. 127, pp. 280-284, December 2005. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/67105 | - |
dc.description.abstract | 本論文發展了兩種新型的爪式轉子,分別是具有橢圓擺線的爪式轉子和具有橢圓弧的爪式轉子。對於具有橢圓擺線的爪式轉子,其輪廓由節圓半徑、轉子半徑、爪數、密封角等四個參數定義,每爪的輪廓由一個外擺線、兩個圓弧、一個橢圓擺線、和橢圓擺線的共軛曲線組成。對於具有橢圓弧的爪式轉子,其輪廓由節圓半徑、轉子半徑、橢圓長軸、爪數、密封角等五個參數定義,每爪的輪廓由一個外擺線、兩個圓弧、一個橢圓弧、和橢圓弧的共軛曲線組成。此外,本論文建立了兩種爪式轉子的數學模型,並推導出它們的幾何限制。另外,本論文還分析了如面積效率和密封性等性能,並將其與以前的爪式轉子進行比較。對於相同爪數、節圓半徑、轉子半徑的爪式轉子,結果表示,具有橢圓形擺線的爪式轉子比以前的爪式轉子具有更好的密封性。另一個結果也顯示具有橢圓弧的爪式轉子具有更高的面積效率和更好的密封性。 | zh_TW |
dc.description.abstract | This thesis develops two types of new claw rotors with elliptical cycloids and elliptical arcs respectively. For claw rotors with elliptical cycloids, the profile is defined by four parameters: pitch radius, rotor radius, number of claws, and conformity angle. The profile of each claw consists of an epitrochoid, two circular arcs, an elliptical cycloid, and a conjugate curve of the elliptical cycloid. For claw rotors with elliptical arcs, the profile is defined by five parameters: pitch radius, rotor radius, major axis of ellipse, number of claws, and conformity angle. The profile of each claw consists of an epitrochoid, two circular arcs, an elliptical arc, and a conjugate curve of the elliptical arc. Moreover, the mathematical models of the two claw rotor types are established and their geometric constraints are also derived. Furthermore, performances such as area efficiencies and sealing properties are analyzed and compared with previous claw rotor types. For claw rotors with the same number of claws, pitch radius, and rotor radius, the result indicates that the claw rotor with elliptical cycloids provides better sealing property than previous claw rotor types. It also indicates that the claw rotor with elliptical arcs provides higher area efficiency and better sealing property. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T01:20:05Z (GMT). No. of bitstreams: 1 U0001-0802202113575300.pdf: 9244221 bytes, checksum: 377b0e7de5ddbfa7c2b55da3b78692e6 (MD5) Previous issue date: 2021 | en |
dc.description.tableofcontents | 口試委員會審定書.....................................................................i 誌謝.............................................................................. ii 摘要............................................................................. iii ABSTRACT...........................................................................iv CONTENTS............................................................................v LIST OF SYMBOLS.................................................................. vii LIST OF FIGURES.....................................................................x LIST OF TABLES ...................................................................xvi Chapter 1 Introduction .............................................................1 1.1 Background knowledge of pumps.................................................. 1 1.2 Classification of multiple rotary pumps........................................ 2 1.3 Development of claw rotor profiles ............................................ 6 1.4Motivation..................................................................... 17 1.5 Outline....................................................................... 18 Chapter 2 Related theories of claw rotor pumps.....................................19 2.1 Geometric design of claw-shaped profile ...................................... 19 2.2 Conjugate theory.............................................................. 22 2.3 Theory of elliptical cycloid ................................................. 25 2.4 Geometric design of roots rotor profiles with elliptical arc ................. 28 2.5 Analytical methods of pump performance........................................ 33 Chapter 3 Geometric design of Type 8 (elliptical cycloid)..........................36 3.1 Design method of Type 8....................................................... 36 3.2 Mathematical models of Type 8................................................. 38 3.3 Design constraints of Type 8 ................................................. 46 3.4 Computer aid design of Type 8................................................. 48 Chapter 4 Performance analysis of Type 8 (elliptical cycloid)......................51 4.1 Comparison of area efficiency and sealing property with different design parameters of Type 8...............................................................51 4.2 Performance comparison between Type 8 and the previous type claw rotors....... 59 Chapter 5 Geometric design of Type X (elliptical arc)..............................65 5.1 Design method of Type X....................................................... 65 5.2 Mathematical models of Type X................................................. 67 5.3 Computer aid design of Type X................................................. 77 Chapter 6 Performance analysis of Type X (elliptical arc)..........................80 6.1 Comparison of area efficiency and sealing property with different design parameters of Type X...............................................................80 6.2 Performance comparison between the previous type claw rotors and Type X ...... 88 6.3 All types of claw rotors developed by CADLab.................................. 96 Chapter 7 Conclusions and suggestions..............................................97 7.1 Conclusions................................................................... 97 7.2 Suggestions................................................................... 98 References.........................................................................99 Appendix A: Installation and execution of AutoCAD program of Type 8 and Type X....101 Appendix B: The program for Type 8 and Type X ....................................107 | |
dc.language.iso | en | |
dc.title | 具有橢圓擺線與具有橢圓弧之兩種新型爪式轉子設計與分析 | zh_TW |
dc.title | Design and Analysis of Two New Claw Rotor Types with Elliptical Cycloids and with Elliptical Arcs | en |
dc.type | Thesis | |
dc.date.schoolyear | 109-1 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 劉霆(Tyng Liu),劉正良(Cheng-Liang Liu) | |
dc.subject.keyword | 爪式轉子,橢圓擺線,橢圓轉子,面積效率,密封角, | zh_TW |
dc.subject.keyword | claw rotor,elliptical cycloid,elliptical rotor,area efficiency,conformity angle, | en |
dc.relation.page | 110 | |
dc.identifier.doi | 10.6342/NTU202100676 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2021-02-17 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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