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Title:
METHOD FOR MODIFYING PERFORMANCE OF ROTOR PROFILE BY ADJUSTING MESHING LINE SEGMENTS
Document Type and Number:
WIPO Patent Application WO/2019/119503
Kind Code:
A1
Abstract:
A method for modifying performance of a rotor profile by adjusting meshing line segments, comprising the following steps: step 1, dividing a meshing line of a bilateral profile into 8 functional segments; step 2, constructing each functional segment by using a cubic NURBS curve; and step 3, locally adjusting the functional segments of the meshing line by adjusting a control point or a weight factor of the NURBS curve, and observing the corresponding change of the rotor profile so as to adjust corresponding geometrical parameters. The method is flexible and convenient in design means, the change of the profile is controlled by adjusting the free curve, and the change trend of the male and female rotor profiles, particularly the change trend of the leakage triangle, the contact line length, the inter-tooth space and the area utilization coefficient, is observed by locally adjusting the meshing line with reference to the correspondence between the meshing line and the rotor profile, so that the design efficiency of the rotor profile of a twin-rotor screw compressor can be improved, and therefore the defect that a profile cannot be locally modified in the conventional rotor profile design can be overcome.

Inventors:
HE, Xueming (GENG, XiaoyueNo. 1800 Lake Avenu, Wuxi Jiangsu 2, 214122, CN)
SHI, Guojiang (GENG, XiaoyueNo. 1800 Lake Avenu, Wuxi Jiangsu 2, 214122, CN)
HUANG, Taotao (GENG, XiaoyueNo. 1800 Lake Avenu, Wuxi Jiangsu 2, 214122, CN)
HUANG, Hainan (GENG, XiaoyueNo. 1800 Lake Avenu, Wuxi Jiangsu 2, 214122, CN)
CHEN, Xiaofei (GENG, XiaoyueNo. 1800 Lake Avenu, Wuxi Jiangsu 2, 214122, CN)
Application Number:
CN2017/119422
Publication Date:
June 27, 2019
Filing Date:
December 28, 2017
Export Citation:
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Assignee:
JIANGNAN UNIVERSITY (GENG, XiaoyueNo. 1800 Lake Avenu, Wuxi Jiangsu 2, 214122, CN)
International Classes:
F04C2/16; F04C18/16
Foreign References:
CN102828954A2012-12-19
CN102352846A2012-02-15
CN106194717A2016-12-07
US20110020162A12011-01-27
CN107023480A2017-08-08
Other References:
XUEMING ET AL.: "Profiles . Design Method and Numerical Simulation for Twin-screw Compressor", JOURNAL OF MECHANICAL STRENGTH, vol. 38, no. 2, 31 December 2016 (2016-12-31)
Attorney, Agent or Firm:
HARBIN SHINEIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (GENG, XiaoyueRoom E501, Building 18,Science and Technology 1st Street No. 99, Songbei Distric, Harbin Heilongjiang 8, 150028, CN)
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