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New understanding of precession-rolling-induced oil film pressure in thrust-slide bearings in scroll compressors.

Number: 1169

Author(s) : ANAMI K., TANAKA M., SATA K., MATSUURA H., MAEJIMA Y., NISHIMURA K., MIYAZAWA K.

Summary

In scroll compressors, the gas compression pressure induces an overturning moment, resulting in a tilted orbiting scroll and the generation of a “wedge oil film force” in the thrust-slide bearing due to its orbiting motion. This study introduces a novel lubrication mechanism, due to the motion denoted as “precession rolling” of the thrust plate, which occurs in addition to the conventional wedge oil film pressure. The focus of this study is on the induction of extremely high oil film pressure due to precession-rolling. The oil film force due to precession-rolling is analyzed using a theoretical analysis of the oil film pressure between scroll wraps. Theoretical analysis reveals that precession-rollinginduced oil film pressure exceeds conventional wedge oil film forces due to sliding motion, indicating the importance of precession-rolling in the lubrication mechanism in scroll compressors.

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  • Original title: New understanding of precession-rolling-induced oil film pressure in thrust-slide bearings in scroll compressors.
  • Record ID : 30033056
  • Languages: English
  • Subject: Technology
  • Source: 2024 Purdue Conferences. 27th International Compressor Engineering Conference at Purdue.
  • Publication date: 2024/07/18

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