Simultaneous Measurement of Leakage and Friction at Tip Seal in Scroll Compressor

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  • スクロール圧縮機のチップシールにおける漏れと摩擦の同時測定
  • スクロール アッシュクキ ノ チップシール ニ オケル モレ ト マサツ ノ ドウジ ソクテイ

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Abstract

<p>A Tip seal is used to prevent a radial leakage at a tip of scroll tooth. In order to improve an efficiency of the scroll compressor, it is necessary to reduce both gas leakage across the tip seal and friction at the tip seal. However, there are many parameters regarding the gas leakage and the friction, and influences of the parameters on the gas leakage and the friction have not been clarified. In this study, test apparatus which can measure the leakage and friction at sliding surface of the tip seal simultaneously was developed. Influences of a waviness and Young’s modulus of the tip seal on the seal effect and the friction were examined with the test apparatus. Although the leakage increases when the tip seal has large waviness on the surface, it is expected that the tip seal in actual compressor is pressed uniformly to base plate. Furthermore, when Young’s modulus of the tip seal is small, frictional force at the tip seal increases compared to a tip seal having high Young’s modulus.</p>

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