11-62 - type A centrifugal fan is A kind of high efficiency, low speed, low noise centrifugal fan, it is by the advanced aerodynamic impeller structure, logarithmic spiral casing, compact and has the advantages of novel structure, small vibration, use convenient adjustment, etc. Ventilation is used in air conditioning unit, the size of the hotel, restaurant or take lampblack; Also can be used as general building indoor and ventilated take a breath. Transmission medium is air or other not spontaneous combustion, harmless to the human body gas, excluding viscous material in the medium, gas temperature of 80 ° C or less, the dust and solid impurity acuities were 150 mg/m3.