Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Performance Evaluation of Nano-Lubricants at Thrust Slide-Bearing of Scroll Compressor

나노 윤활유를 이용한 스크롤 압축기 스러스트 베어링의 윤활특성 평가

  • Cho, Han-Jong (Digital Appliance Research Laboratory, LG Electronics Inc.) ;
  • Cho, Yong-Il (Digital Appliance Research Laboratory, LG Electronics Inc.) ;
  • Cho, Sang-Won (Department of Mechanical Engineering, Pusan National Univ.) ;
  • Lee, Jae-Keun (Department of Mechanical Engineering, Pusan National Univ.) ;
  • Park, Min-Chan (Department of Mechanical Engineering, Pusan National Univ.) ;
  • Kim, Dae-Jin (Department of Mechanical Engineering, Pusan National Univ.) ;
  • Lee, Kwang-Ho (Department of Mechanical Engineering, Pusan National Univ.)
  • Received : 2011.07.06
  • Accepted : 2011.09.30
  • Published : 2012.01.01
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Abstract

This paper presents the friction and anti-wear characteristics of nano-oil with a mixture of a refrigerant oil and carbon nano-particles in the thrust slide-bearing of scroll compressors. Frictional loss in the thrust slide-bearing occupies a large part of total mechanical loss in scroll compressors. The characteristics of friction and anti-wear using nano-oil is evaluated using the thrust bearing experimental apparatus for measuring friction surface temperature and the coefficient of friction at the thrust slide-bearing as a function of normal loads up to 4,000 N and rotating speed up to 3,200 rpm. It is found that the coefficient of friction increases with decreasing rotating speed and normal force. The friction coefficient of carbon nano-oil is 0.023, while that of pure oil is 0.03 under the conditions of refrigerant gas R-22 at the pressure of 5 bars. It is believed that carbon nano-particles can be coated on the friction surfaces and the interaction of nano-particles between surfaces can be improved the lubrication in the friction surfaces. Carbon nano-oil enhances the characteristics of the anti-wear and friction at the thrust slide-bearing of scroll compressors.

Keywords

References

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