| Title |
Improvement of the Heat Resistance Reliability of an Axial Smoke Exhaust Fan |
| Authors |
허진혁(Jin-Huek Hur) ; 허기무(Kimoo Heo) ; 문승재(Seung-Jae Moon) ; 이재헌(Jae-Heon Lee) |
| Keywords |
배연용 축류팬 ; 모터 ; 내열 신뢰성 ; B10 수명 Axial smoke exhaust fan ; Motor ; Heat resistance reliability ; B10 life |
| Abstract |
In this paper, the heat resistance reliability of an axial smoke exhaust fan was investigated. An axial smoke exhaust fan should be capable of operating at 250℃ for 2 hours. The heat resistance reliability was evaluated by the heat resistance reliability test. A B10 life with a 90% confidence level was estimated to be about 48 minute. The failure occurred in the motor due to high temperature. The main failure mechanisms of the motor were melting of bond and insulating paper and burning of insulating materials in the coil. The heat resistance reliability was improved by changing the way to unite the core and the coil and by replacing the insulating paper and the insulating materials of the coil. A B10 life with a 90% confidence level of a modified axial smoke exhaust fan was estimated to be over 120 minute. |