Development of the economy and the growing income of people interested in the leisure and health has been focused. Past the town common wells and groundwater around the water, but health is a priority these days to solve the drinking water directly from tap water, but most people work from home, through the water purifier has been resolved. Depending on seasonal changes and personal taste of coffee, if you can enjoy a snack and water purifier is a restaurant, lounge, public areas and focusing on the rapid spread of the fire, water purifier as compared to the total number of fires increased by 0.03% per year trend on, but the washrooms fire and fire-related research data and case studies with analysis of the exact cause lack of proper preventive measures are insufficient reality. In this study, focusing on electrical energy using a water cooler to understand the structure and principles of fire, the fire revealed the mechanism is vulnerable to the consideration of factors, the exact cause of the fire investigation and the Assistant, manufacturing defects, and to contribute to fire prevention review should.

Abstract
 Ⅰ. 서론
 Ⅱ. 정수기 등의 종류(구분)
 Ⅲ. 구조 및 원리
  1. 냉온수기 구조
  2. 냉ㆍ온시스템
  3. 주요부품 구조 및 작동원리
 Ⅳ. 발화사례
  1. 냉각장치 서모스탯 발화
  2. 바이메탈 온도조절장치 발화
  3. 전기배선의 발화
  4. 메인기판 발화
  5. 기동릴레이 발화
  6. 콘덴서 발화
 Ⅴ. 재현실험을 통한 발화가능성 검토
  1. 재연실험 개요
  2. 재현실험 결과
  3. 발화가능성 검토결과
  4. 화재현장에서 주요 감식포인트
 Ⅵ. 결론
 Ⅶ. 참고문헌

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