Why do FRP centrifugal fans make noise?

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【Brief Description】For centrifugal fan, everyone is no stranger. And in the face of different environments, different materials of centrifugal fan corresponding to different environments work, such as corrosive factory environment kind, fiberglass centrifugal fan is more suitable, and if it is a high temperature environment, stainless steel centrifugal fan is relatively more suitable, so choose which kind of centrifugal fan need to be based on their own situation to decide.

　　For centrifugal fan, everyone is no stranger. And in the face of different environments, different materials of centrifugal fan corresponding to different environments work, such as corrosive factory environment kind, fiberglass centrifugal fan is more suitable, and if it is a high temperature environment, stainless steel centrifugal fan is relatively more suitable, so choose which kind of centrifugal fan need to be based on their own situation to decide.

　　Then why centrifugal fan will produce noise? Here the new Guangheng fan to give you an answer.

　　Noise is generated due to the blade rotation, and the blade rotation will produce friction with the air, or impact. The faster the rotating speed, the higher the frequency of the air, the sharper the noise. The width or thickness of the blade increases, this phenomenon is more obvious. Noise frequency is compounded by a variety of frequencies, these frequencies are related to the speed of the fan.

Fiberglass reinforced plastic fans

Because of the vortex produced by the blade will also produce noise during the operation of the fan, the back of the moving wing will produce vortex, the vortex will not only reduce the efficiency of the fan, but also produce noise. In order to minimize this phenomenon, the installation angle of the blade should not be too large, and the fan blade bending should be smooth, do not suddenly change too much.

　　If resonance with the duct shell and noise duct and fan shell of the inner surface of the seams of the rough and uneven, will also cause tearing sound, to be leveled.