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Hydrodynamic pressure induced elastic deformation of thrust slide bearings in scroll compressors and oil film pressure increase due to oil envelopment.

Number: pap. 1562

Author(s) : ISHII N., TSUJI T., ANAMI K., et al.

Summary

In this paper, the effect of the Elasto-Hydrodynamic Lubrication (EHL) on the performance of thrust slide-bearings in scroll compressors is considered. The EHL effect accounts for the superior lubrication characteristics of these bearings. The orbiting thrust plate undergoes elastic deformation due to axial loading, resulting in the formation of a uniform fluid wedge between the orbiting and fixed thrust plates. This fluid wedge is a region with very high induced oil film pressure which, in turn, accounts for the remarkably good lubrication characteristics of the thrust slide-bearing. Furthermore, the high oil film pressure further induces a local elastic deformation of the fixed thrust plate to form an EHL pocket in the thrust plate. The greater the deformation, the more the oil film pressure between the sliding surfaces increases, due to the envelopment of the oil in this local region of deformation. The formation of the EHL pocket was verified using FEM analysis and lubrication tests on the elastic deformation of the thrust plate.

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Pages: 10 p.

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Details

  • Original title: Hydrodynamic pressure induced elastic deformation of thrust slide bearings in scroll compressors and oil film pressure increase due to oil envelopment.
  • Record ID : 30014078
  • Languages: English
  • Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Publication date: 2014/07/14

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