An Accelerated Life Test of Booster Pump for Water Purifier

정수기용 부스터펌프의 가속수명시험

  • Moon, Ji-Seob (Environment Quality Institute, Woongjin Coway Co., Ltd.) ;
  • Jeong, Seon-Yong (Environment Quality Institute, Woongjin Coway Co., Ltd.) ;
  • Kim, Myung-Soo (Dept. of Industrial Information Engineering, Univ. of Suwon)
  • 문지섭 (웅진코웨이 환경품질연구소) ;
  • 정선용 (웅진코웨이 환경품질연구소) ;
  • 김명수 (수원대학교 산업정보공학과)
  • Received : 2011.09.10
  • Accepted : 2011.09.17
  • Published : 2011.09.25


This paper presents an accelerated life test of booster pump for home water purifier. The failure analysis shows that decreased flux due to the plastic deformation of bypass spring adjusting pressure is the predominant failure mechanism. An accelerated life test is designed and implemented to estimate the lifetime of the booster pump. Temperature, water pressure and voltage are selected as accelerating variables through the technical review about failure mechanism. It is assumed that the lifetimes of booster pumps follow lognormal distribution and the combination model of temperature and non-thermal stresses holds. The life-stress relationship, acceleration factor, and $B_{10}$ life at design condition are estimated by analyzing the accelerated life test data.



  1. 정수기의 시장 기술 보고서(2009), 중소기업진흥공단.
  2. 2010 환경백서(2010), 환경부.
  3. 가속수명시험 Guideline - 1부 가속수명시험의 개요(2004), 수원대학교 신뢰성혁신센터.
  4. 가속수명시험 Guideline - 2부 가속수명시험의 설계(2004), 수원대학교 신뢰성혁신센터.
  5. 가속수명시험 Guideline - 3부 가속수명시험 데이터 분석(2004), 수원대학교 신뢰성혁신센터.
  6. W. Nelson, Accelerated Testing : Statistical Models, Test Plans, and Data Analyses (1990), Wiley.