Summary
In the rotary compressor, the rolling piston and the contacted rotor-journal bearing system are main moving components. They suffer very large periodically varying loads introduced by the inertia force, the contact force and the gas force. These loads change rapidly with speed variation of the compressor. They always lead to serious vibration of the system, and then result in abrasion and performance reduction. In this paper, the dynamic behavior of the rotor-journal bearing system were calculated by solving three-dimensional numerical model using finite element method, and the vibration characteristics of the system were investigated according to the calculation results. The natural frequencies and vibration modes were obtained. The stress, displacement and axis orbit of the rotor center were calculated considering the speed variation of the motor. Via the established numerical model, vibration characteristics of a newly designed compressor can be predicted, and optimization can be done to reduce the vibration.
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Details
- Original title: Dynamic analyses for the rotor-journal bearing system of a variable speed rotary compressor.
- Record ID : 30009783
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 7
- Publication date: 2013/11
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Indexing
- Themes: Compressors
- Keywords: Variable speed; Vibration; Rotor; Bearing; Simulation; Rotary compressor; Rolling piston compressor
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Modal analysis of the rotor-journal bearing sys...
- Author(s) : WANG Z. L., FENG Q. K., ZHANG F. Y., et al.
- Date : 2012/07/16
- Languages : English
- Source: 2012 Purdue Conferences. 21st International Compressor Engineering Conference at Purdue.
- Formats : PDF
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VIBRATION OF A ROLLING PISTON TYPE ROTARY COMPR...
- Author(s) : YANAGISAWA T.
- Date : 1984
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 7 - n. 4
- Formats : PDF
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MECHANICAL EFFICIENCY OF A VARIABLE SPEED SCROL...
- Author(s) : ISHII N.
- Date : 1990/07/17
- Languages : English
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Vibration and noise control of a rotary compres...
- Author(s) : DREIMAN N., HERRICK K.
- Date : 1998/07/14
- Languages : English
- Source: Proceedings of the 1998 International Compressor Engineering Conference at Purdue (ICECP 1998).
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Design and development of a variable rotary com...
- Author(s) : HARTE S., HUANG Y., SUD L.
- Date : 2000/07/25
- Languages : English
- Source: Proceedings of the 2000 International Compressor Engineering Conference at Purdue.
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