A study on Discharge Characteristics of Rotating Discharge Hole with inlet edge shape

입구 형상에 따른 회전 송출공의 송출특성 연구

  • 강세원 (서울대학교 대학원 기계공학과) ;
  • 하경표 (서울대학교 대학원 기계공학과) ;
  • 고상근 (서울대학교 기계공학과)
  • Published : 2000.04.20


A study on discharge characteristics of a rotating discharge hole is very important to enhance the performance of an induction motor which have external forced cooling system. The discharge characteristics of rotating discharge holes are influenced by rotating speed, length-to-diameter ratio, inlet shape of rotor holes, etc. An experimental study on the effect of chamfered inlet edge of rotor inlet part with various depth-to-diameter and inlet chamfered edge angle is conducted. Depth-to-diameter ratios range from 0 to 0.5 and inlet chamfered edge angle range from 0 to 60. As a result, there is an optimal design point of inlet chamfered edge depth. And the inlet edge angle far maximum discharge coefficient is influenced mainly by the rotating speed of discharge holes.