Mufflers for Ventilation Conditioner and Draught Fan
Noise is one of the most serious disturbances facing users of air conditioner. Large conference venue, recreation facility, sports area and metro transportation system needs ventilation and air-conditioning systems so as to provide people there with the fresh air at an appropriate temperature to facilitate their political activities, academic activities, works, trips and recreation; therefore the ventilation and air-conditioning system is very necessary for the comfortable environment and body health. Since it has the far-reaching influence, the noise reduction designs for the heating (cooling) air system and the ventilation system is mostly important. The gas noise control is aimed to reduce the mechanical noise and the air power noise caused by the ventilators. The muffler is a device made of a sound absorbing liner or a special structural form, and an airflow channel that can efficiently reduce noise. Reasonable selection and configuration of muffler is a key to the noise reduction project.
The muffler is mainly composed of the regular resistive muffler (soundproofing louver), large civil engineering air-duct muffler and environmental friendly muffler. The muffler has multiple structures, including tube type, slice type, foldable plate type, and sound flow loss type. Additionally, it also includes the structural slice type and the beam tube type used for air ducts.