draught fan meaning in Chinese

通风风扇
通风机
引风机

Device : dust collector , dust drawer , air heater , wash tower , draught fan , blower : import and export fans of different equipments .
集尘器汲尘器空气加热器洗涤塔引风机鼓风机：各设备的风机进出口。
Soft starter reduce the shock that is happened in the process start and stop to the draught fan equipment so as to extend convey system service life and decrease maintenance
降低起动和停车过程中对风机设备的冲击，从而延长其使用寿命，减少维护量。