Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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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
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Abstract

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.

내접형 기어펌프의 경우 내구성과 소형화의 장점을 가지고 있으나, 유량증대 및 소음저감의 성능개선이 요구되고 있다. 본 논문에서는 외부로브 형상이 다양한 곡선 조합(타원 1-인볼루트-타원 2)인 경우에 대하여 기구학적 치형 형상 관계식을 유도하고, 창성된 치형에 대해 소음에 관계된 성능인자(압력각, 유량맥동과 미끄럼률)를 예측하여 소음정도를 수치적으로 비교하였다. 또한 이론 해석을 통해 구한 치형형상과 성능인자 예측 알고리즘을 통하여 설계변수와 성능인자간의 영향도를 분석하였고, 분석 결과를 바탕으로 일정한 유량성능을 유지하면서 소음이 저감된 치형의 최적설계를 수행하였다. 해석결과를 바탕으로 제시된 치형의 최적설계에 대한 시제품 제작 및 소음 시험을 통해 설계의 타당성을 검증하였다.

Keywords

References

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