A different model of ventilation equipment, its speed varies, under certain conditions, the noise is proportional to the speed. Therefore, should ensure that the kitchen hood purification machine purification effect at the same time, try to choose a relatively low speed ventilation equipment, especially in the noise pollution control is more stringent place.

Two, as far as possible to avoid the use of valves to regulate the working conditions, which can make the ventilation device to maintain a high working efficiency. And the higher the working efficiency of the ventilation equipment, it produces less noise. If the valve must be designed in the equipment pressure out of the end, it should be installed about one meter away from the exit, while ensuring that the inlet airflow is uniform.

Three, choose a high-quality fume hood purification machine, such as Weiden. Good quality fume hood purification all-in-one machine can effectively solve the problem of loud noise.