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Lubrication tests to support optimal performance design guidelines for thrust slide-bearings in scroll compressors.

Number: pap.1497

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

Summary

This study focuses on experimental verification of the optimal performance design guideline in lubrication for the thrust slide-bearings in scroll compressors. The auhtors’ previously derived theoretical analysis using the average Reynolds equation and the solid contact theory, when applied to a cylindrical rigid thrust plate model with a small fixed wedge angle at its pheriphery, predicted a dramatic decrease in the friction power loss with increasing outerto-inner radius ratio and determined a minimum value at a certain value of the radius ratio. For experimental confirmation of this predicted optimal lubrication performance, a cylindrical-model of the thrust slide-bearing, submerged in a refrigerant oil POE (polyol ester), was operated under a pressurized condition of 0.6 MPa using R410A as the pressurizing gas, over a wide range of orbiting speeds from 1200 rpm to 6000 rpm for a fixed orbiting radius of 3.0 mm. The resulting measured data agreed well with the predicted tendency that the lubrication of the thrust slide-bearing is substantially improved by increasing the outer radius. As was theoretically predicted, the minimum loss with a radius ratio of about 2.1 at an operating speed of 3600 rpm, a significant 80% reduction relative to the usual conventional design ratio.

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Pages: 9 p.

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Details

  • Original title: Lubrication tests to support optimal performance design guidelines for thrust slide-bearings in scroll compressors.
  • Record ID : 30019620
  • Languages: English
  • Source: 2016 Purdue Conferences. 23rd International Compressor Engineering Conference at Purdue.
  • Publication date: 2016/07/11

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