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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
Add:
No.9 Gaoguannong,Daxue Road,Hangzhou,China
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310009
E-mail:
meem_contribute@163.com
Abstract: In the whole working process of scroll compressor, the working environment and stress of dynamic and static scroll plates are complicated, which easily leads to the deformation of dynamic scroll teeth, which leads to the deterioration of radial clearance sealing performance and the increase of axial clearance, which affects the working efficiency and reliability of scroll compressor. Therefore, based on the finite element theory, the real stress situation of scroll compression motor scroll was simulated by applying various loads, and the distribution law of stress and strain was obtained. Firstly, by improving the solution of the temperature load of the scroll plate, the average temperature function of the fluid domain on the scroll wall was calculated, and the steady-state temperature distribution model of the scroll solid domain was established. Then, temperature load, gas pressure load, inertial force load, temperature-gas pressure load and multi-load coupling were applied to the scroll teeth respectively. Finally, the stress and strain distribution of the orbiting scroll plate under different loads was analyzed. The research results show that the radial deformation law under temperature-gas pressure load is similar to that under gas pressure load. The law of axial deformation is similar to that of temperature load. Under multi-load coupling, the maximum deformation and stress of the scroll tooth are greatly affected by the inertial force. The maximum deformation and stress value of the scroll tooth increase by 7.97 μm and 52.5 MPa respectively compared with the temperature-gas pressure load. In different working chambers, the deformation of the inner wall of the scroll tooth is greater than that of the outer wall, and the maximum difference is 1.11 μm. Between different working chambers, the deformation amplitude of the inner and outer walls gradually decreases with the gas compression process.
Key words: positive displacement compressor; scroll compressor; thermal load; deformation law; stress distribution; deformation of dynamic scroll teeth; sealing performance
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