Reduce the noise of electric ventilation fan

In the process of the design and use of electric ventilation fan, we must pay attention to the following: a system impedance, the disturbance of the airflow, the speed and size of the electric ventilation fan electric ventilation fan vibration, etc., in order to reduce the low noise.

System impedance: The air-flow resistance will cause the air flow noise generation.

Airflow disorders: cause air turbulence due to the poor design of the flow channel will have high-frequency noise appears, if the runner does not improve very difficult to heighten the quality of.

Electric ventilation fan speed and size: the faster the cooling effect of the electric ventilation fan speed the better, the greater the larger the size of the fan air flow and better cooling. Electric ventilation fan the higher the speed, the greater the noise, the greater the larger the size of the noise.

The vibration of the electric ventilation fan: electric ventilation fan vibration will cause increased fan noise, lower life expectancy, and the speed is reduced.

Voltage fluctuation: voltage fluctuations can cause the fan speed changes, job insecurity and will generate additional noise.

In the process of the design and use of electric ventilation fan, if you note the above points, you can greatly reduce the noise of the motor ventilation fan.