Optimal Design of Rotor Profile of Internal Gear Pump for Noise Reduction

내접형 기어펌프용 로터의 소음저감을 위한 치형 최적설계

  • Bae, Jun Ho (Research Institute of Mechanical Technology, Pusan Nat'l Univ.) ;
  • Bae, Won Byong (Research Institute of Mechanical Technology, Pusan Nat'l Univ.) ;
  • Joo, Ung Tak (Research Institute of Mechanical Technology, Pusan Nat'l Univ.) ;
  • Kim, Chul (Research Institute of Mechanical Technology, Pusan Nat'l Univ.)
  • 배준호 (부산대학교 기계기술연구원) ;
  • 배원병 (부산대학교 기계기술연구원) ;
  • 주웅탁 (부산대학교 기계기술연구원) ;
  • 김철 (부산대학교 기계기술연구원)
  • Received : 2013.12.03
  • Accepted : 2014.01.15
  • Published : 2014.03.01


An internal gear pump is required to improve the flow rate and noise. Furthermore, such pumps are durable and small in size. In this study, equations of the rotor shape with multiple profiles (ellipse 1-involute-ellipse 2) were derived, and relevant performance parameters (pressure angle, irregularity, and specific sliding) of the internal gear pump to noise were predicted and compared. Rotor profiles and performance parameters were obtained by a prediction algorithm for theoretical analysis, and the effects between the design parameters and the performance parameters were analyzed. Based on the analysis results of the effects, an optimal design of the rotor profile was proposed, and a noise test of the prototype was performed to evaluate the reliability of the design.


Rotor Profile;Noise Reduction;Noise Test;Optimal Design;Performance Parameter;Design Parameter


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