Geometric design of two novel rotor profiles for Roots vacuum pumps with elliptical curve
Rotors are the key components of Roots vacuum pumps owing to their significant impact on compression ratio and volume utilization rate of the product, which is formed on the rotor profile. This study proposes two novel elliptical rotor profiles: one designed with an elliptical curve at the top and t...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025002580 |
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| author | Zhengqing Li Xiaojun Wang Xianhu Han Yuhong Cai |
| author_facet | Zhengqing Li Xiaojun Wang Xianhu Han Yuhong Cai |
| author_sort | Zhengqing Li |
| collection | DOAJ |
| description | Rotors are the key components of Roots vacuum pumps owing to their significant impact on compression ratio and volume utilization rate of the product, which is formed on the rotor profile. This study proposes two novel elliptical rotor profiles: one designed with an elliptical curve at the top and the other with an elliptical curve at the waist. Mathematical models of the new rotor profiles were established, and profile equations were derived on a geometric method. To examine their shapes and characteristics, the rotor profiles were designed with a pumping speed of 70 L/s for the Roots vacuum pumps. Additionally, a two-dimensional numerical simulation of the two novel rotors was conducted to analyze the flow field of the Roots vacuum pumps. The results indicated that the top elliptical rotor profile had the advantage of a high-volume utilization rate approaching 55 %, whereas the waist rotor profile had the advantage of a high effective pumping speed, exceeding the top elliptical rotor profile by a factor of 1.5. |
| format | Article |
| id | doaj-art-91dc7f18c8e441b189f3c58592775504 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-91dc7f18c8e441b189f3c585927755042025-02-02T05:29:15ZengElsevierResults in Engineering2590-12302025-03-0125104170Geometric design of two novel rotor profiles for Roots vacuum pumps with elliptical curveZhengqing Li0Xiaojun Wang1Xianhu Han2Yuhong Cai3Lanzhou Institute of Physics, Lanzhou 730000, ChinaCorresponding author.; Lanzhou Institute of Physics, Lanzhou 730000, ChinaLanzhou Institute of Physics, Lanzhou 730000, ChinaLanzhou Institute of Physics, Lanzhou 730000, ChinaRotors are the key components of Roots vacuum pumps owing to their significant impact on compression ratio and volume utilization rate of the product, which is formed on the rotor profile. This study proposes two novel elliptical rotor profiles: one designed with an elliptical curve at the top and the other with an elliptical curve at the waist. Mathematical models of the new rotor profiles were established, and profile equations were derived on a geometric method. To examine their shapes and characteristics, the rotor profiles were designed with a pumping speed of 70 L/s for the Roots vacuum pumps. Additionally, a two-dimensional numerical simulation of the two novel rotors was conducted to analyze the flow field of the Roots vacuum pumps. The results indicated that the top elliptical rotor profile had the advantage of a high-volume utilization rate approaching 55 %, whereas the waist rotor profile had the advantage of a high effective pumping speed, exceeding the top elliptical rotor profile by a factor of 1.5.http://www.sciencedirect.com/science/article/pii/S2590123025002580Roots vacuum pumpEllipseConjugate curveVolume utilization rate |
| spellingShingle | Zhengqing Li Xiaojun Wang Xianhu Han Yuhong Cai Geometric design of two novel rotor profiles for Roots vacuum pumps with elliptical curve Results in Engineering Roots vacuum pump Ellipse Conjugate curve Volume utilization rate |
| title | Geometric design of two novel rotor profiles for Roots vacuum pumps with elliptical curve |
| title_full | Geometric design of two novel rotor profiles for Roots vacuum pumps with elliptical curve |
| title_fullStr | Geometric design of two novel rotor profiles for Roots vacuum pumps with elliptical curve |
| title_full_unstemmed | Geometric design of two novel rotor profiles for Roots vacuum pumps with elliptical curve |
| title_short | Geometric design of two novel rotor profiles for Roots vacuum pumps with elliptical curve |
| title_sort | geometric design of two novel rotor profiles for roots vacuum pumps with elliptical curve |
| topic | Roots vacuum pump Ellipse Conjugate curve Volume utilization rate |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025002580 |
| work_keys_str_mv | AT zhengqingli geometricdesignoftwonovelrotorprofilesforrootsvacuumpumpswithellipticalcurve AT xiaojunwang geometricdesignoftwonovelrotorprofilesforrootsvacuumpumpswithellipticalcurve AT xianhuhan geometricdesignoftwonovelrotorprofilesforrootsvacuumpumpswithellipticalcurve AT yuhongcai geometricdesignoftwonovelrotorprofilesforrootsvacuumpumpswithellipticalcurve |