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Phase angle adjustment method of direct drive scroll compressor based on swing angle motor
Published:2023-05-25 author:JIANG Jia-zhen, CAI Jiong-jiong, LIU Fan-bo, et al. Browse: 1225 Check PDF documents
Phase angle adjustment method of direct drive scroll compressor 
based on swing angle motor


JIANG Jia-zhen, CAI Jiong-jiong, LIU Fan-bo, 
CHEN Hao, QU Xiao

(School of Automation and Electrical Engineering, Zhejiang University of Science and 
Technology, Hangzhou 310023, China)


Abstract: Aiming at the problem that the installation phase angle of the direct drive scroll and the fixed scroll could not get adjusted, a method of adjusting the phase angle of direct drive scroll based on swing angle motor was studied. Firstly, the architecture of direct drive scroll based on swing angle motor was proposed, the characteristics of the movable scroll profile and the mechanism of phase angle adjustment were analyzed. Then, the method of adjusting the phase angle of the orbiting scroll was proposed, that was, the radius of the orbiting scrolls translational trajectory circle was calculated through any three non-coincident points on the orbiting scroll‘’s running trajectory, and the phase angle adjustment was optimized after confirming the direction of the adjusting phase angle of the orbiting scroll. Finally, an experimental platform for phase angle adjustment of direct-drive scroll compressors was built to verify the feasibility of the above methods. The experimental results show that,when the adjusted phase angle of the orbiting scroll is -4 °, the calculated translational trajectory circle radius reaches the maximum R= 4.686mm, and the theoretical translational trajectory circle radius r = 4.721mm. The relative error between the two is 0.73%.The research results show that this method can effectively adjust the phase angle of the orbiting scroll compressor.

Key words:  scroll compressor; phase angle of the moving vortex disk; translational trajectory radius; direct drive of swing angle motor; phase angle adjustment direction; vortex profile equation
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