Kunshan Sheng Tang ventilation introduction: How to adjust the sound of industrial centrifugal fans?

Industrial centrifugal fan noise is a common phenomenon, in view of this problem, Best Tuo is committed to the manufacturing and research and development of fans, in the continuous innovation and constantly looking for reasons and solutions, today Kunshan Sheng Tang ventilation first to give a brief introduction.

Industrial centrifugal fan sound big how to adjust?

Cause of noise generated by fan

1. As an important part of the operation of impeller fan, it will produce obvious noise under the condition of high speed and low load. This noise is generally caused by the interaction of uneven flow field caused by blade asymmetry.

2. Eddy current will also produce noise during the operation of the fan. The eddy current noise is generally caused by turbulent flow noise caused by the airflow passing through the blade.

Industrial centrifugal fan sound big how to adjust?

Fan noise reduction method

In view of the noise generated by the impeller of the above two points, usually can reduce the noise through the blade perforation method, with the perforation method, can make part of the flow through the blade high pressure surface to the low pressure surface, can promote the blade separation point to move down the flow, so that the noise will be reduced a little.

Industrial centrifugal fan sound big how to adjust?

In addition, the following 4 points can also be taken in view of the noise of the fan:

1. Install shock absorbers. Spring shock absorbers are used on the ceiling of the fan to reduce the vibration of the fan.

2. Install silencing louvers, and use silencing louvers outside the ground layer to reduce noise propagation.

3. Install the muffler at the inlet and outlet of the fan to reduce the air power noise.

4. Install the fan sound insulation cover. In order to ensure that the service life of the fan is not affected, reasonably set up the ventilation and heat dissipation system, and install sound-proof doors and Windows to facilitate the inspection and maintenance of the equipment.