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Development of large capacity rotary compressor with three cylinders. Second report: Vibration and sound.

Author(s) : HIRAYAMA T., SHIDA S., HIRANO K., ITO Y., MONASRY J. F.

Type of article: IJR article

Summary

This paper presents theoretical calculation results of the axis excitation force associated with compression operation of a three-cylinder rotary compressor, and shows that the axis excitation force is reduced to about 30% of that of a two-cylinder rotary compressor. Our paper has performed an axis behavior analysis, and clarifies that the axis runout amplitude of the upper end of the crankshaft during high-speed rotation is reduced by 55% by improving counter balancer arrangement. To demonstrate these effects, we measured vibration and sound of a three-cylinder prototype with a 20% larger displacement volume than a two-cylinder maximum model, and compared them with that two-cylinder model. The vibration due to compression force fluctuation was reduced to less than 30%, and the vibration due to axis runout moment was also reduced to about half. The sound overall value at a rotation speed of 90 rps was reduced three decibels.

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Pages: 261-270

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Details

  • Original title: Development of large capacity rotary compressor with three cylinders. Second report: Vibration and sound.
  • Record ID : 30029086
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 130
  • Publication date: 2021/10
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2021.06.019
  • Document available for consultation in the library of the IIR headquarters only.

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