Slap Behavior of Oldham Ring on Scroll Compressor

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  • ANAMI Keiko
    Department of Mechanical Engineering, Faculty of Engineering,
  • OKAMOTO Ryosuke
    Division of Mechanical and Control Engineering, Graduate School of Engineering,
  • ONISHI Takuya
    Division of Mechanical and Control Engineering, Graduate School of Engineering,

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Other Title
  • スクロール圧縮機のオルダムリングで生じるスラップ現象
  • スクロール アッシュクキ ノ オルダムリング デ ショウジル スラップ ゲンショウ

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<p>In most scroll compressors, the Oldham ring is a prevalently used mechanism to realize orbital motion. When the scroll compressor is operated at higher speed, the Oldham ring may be severely damaged. This damage is apparently due to inherent characteristics of the Oldham ring. The reciprocating motion of the Oldham ring becomes unstable due to the increased inertia force of the Oldham ring itself, resulting in what is here denoted as the slap behavior of the Oldham ring keys in their key slots. In this paper, a theoretical analysis of the Oldham ring key slap behavior during reciprocating motion of the Oldham ring is developed. The dynamics of the Oldham ring in reciprocating motion is re-examined with inclusion of the small clearance gaps. The analysis considers the constraint forces acting on the key slot surfaces to determine the speed limitations to avoid the key slap behavior. In addition, the key slap behavior was qualitatively confirmed by model experiment.</p>

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