| Title |
The Characteristic of Temperature in Ventilating Fans by Festraint or Nonrestraint |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2016.30.1.044 |
| Keywords |
Words：Ventilating fans ; Electrical Fire ; Thermal Fuse ; IR Image |
| Abstract |
In this paper, we analyzed the operating characteristics of a ventilating fan due to overload and overheating. The experiment assumed the forcible restraint of the blade due to external objects and the aging process. We analyzed the experimental temperature and operating characteristics of the three places in the interior of the ventilating fan. As a result of the analysis, the temperature distribution was highest to lowest in the following order: the thermal fuse, the motor inside, and the above winding. There was smell of burning enamel in the restraint experiment. Following the thermal fuse operation, the insulation of motor winding was good. In the case of rated voltage and new ventilating fan restrained for about 4hours, and the results of restraint experiments in the presence or absence of the thermal fuse, no risk of deformation or fire due to overheating was identified. Henceforward, ignition hazard experiments will be required for additional factors of aging, pollution, and defective insulation. |