noise control method of kitchen fan

1. Noise control of fan exhaust port is generally carried out by installing fan muffler, and the designed noise reduction may be different according to the specific noise of fan. In order to effectively reduce the air noise of equipment and the regenerative noise caused by high-speed airflow, we install an impedance compound muffler at the smoke outlet. The lower part is the resistance part, which mainly strengthens the functions of reducing low-frequency noise, reducing pipeline diameter and guiding flow; The upper part is a resistive muffler, which adopts a matrix structure to increase the net air outlet area

2. For the equipment site, relying on the installation platform and surrounding walls, sound absorption and insulation covers are installed above the four equipment.

3. Use sound insulation felt to wrap the fan oil fume pipeline, and at the same time use spring bracket to reduce the generation and spread of pipeline vibration and noise.

4. Sound insulation and vibration reduction materials should be used to fill the passage in the fan duct wall to ensure that the duct vibration will not affect the wall. In case of justice.

the noise control of kitchen fans is mainly handled by means of sound insulation and vibration reduction, so as to isolate the fan noise, reduce the low-frequency noise transmission and effectively weaken the impact of the fan on the environment.