The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Effects of Lobe Shapes on the Performance of Roots-Type Vacuum Pump

로브 형상 변화가 루츠형 진공 펌프 성능에 미치는 영향

  • 김현중 (성균관대학교 대학원) ;
  • 김윤제 (성균관대학교 기계공학부) ;
  • 황영규 (성균관대학교 기계공학부)
  • Published : 2000.06.01
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Abstract

The effects of lobe shapes on the leak flow conductance of Roots-type vacuum pump are studied numerically and experimentally. The modelled lobe shape of Roots-type vacuum pump is two-lobe spur gear. The numerical analyses are performed on leak flows in Roots-type vacuum pump. It is numerically calculated using a 4th-order Runge-Kutta method and is compared with experimental results. Results show that for the case of involute lobe shape the total amount of the leak flow conductance is greater than that of cycloid and Cassini oval lobe shapes.

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