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Experimental investigation of orbiting thrust bearing using wide and shallow circular pockets.

Author(s) : VAIDYA A., SADEGHI F.

Summary

This experimental investigation is focused on improving the frictional characteristics of a scroll compressor thrust slide bearing undergoing an orbital motion. An experimental test rig was designed and constructed to accommodate actual parts of a scroll compressor and measure friction between a scroll compressor crankcase and its orbiting scroll. It was envisaged that in an orbiting situation where couette velocities in both tangential and radial directions are present, circular pockets would be able to provide the geometric wedge in both radial and tangential direction and thus enhance the lubrication performance by shifting the lubrication regime of the thrust slide bearing from boundary to full film. The lubrication performance of the surfaces with circular pockets was compared to that of unmodified specimens which were used as base line specimens. It was observed that in orbiting situation macro circular pockets with large diameters viz. 0.3 to 0.36 inch (7.62 to 9.14 mm) and very shallow depth viz. 0.002 to 0.003 inch (0.5 to 0.076 mm) significantly improved the frictional performance between the scroll crankcase and orbiting scroll.

Details

  • Original title: Experimental investigation of orbiting thrust bearing using wide and shallow circular pockets.
  • Record ID : 2010-0089
  • Languages: English
  • Source: 2009 ASHRAE Annual Conference CD. Transactions papers presented at the 2009 ASHRAE Annual Conference: Louisville, KY, June 2009. Volume 115, part 2.
  • Publication date: 2009/06/21

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