AD402 Auto Drain

Application and product characteristics of CF fan muffler.

Fan is a kind of general mechanical equipment. It is widely used in electric power, mining, machinery, metallurgy, chemical industry and other industries. The noise produced by the fan running is often the bane of workers' health and environment damage. In particular, the air dynamic noise produced by the inlet and outlet of fans near the living area is the main factor causing environmental pollution. It is one of the main objects for the government to control noise pollution in recent years_ Com industrial fan is a continuous operation equipment. ISO (International Organization for Standardization) stipulates that the noise standard of this kind of equipment is ≤ 90 dB, so is the new standard in China, which is also the basis for industrial enterprises to meet the continuous noise standard. However, without taking noise elimination measures, the noise emitted from fan outlet to the environment can reach 110 ~ 120 dB, which greatly exceeds the standard requirements. This series of products are impedance acoustic flow type. According to the approximate characteristic data obtained from the actual noise source test of various fans in the power plant, the main basis for the design of the structure of sound absorption sheet and the flow channel of adjustable muffler is determined in which spectrum range, and the rectangular channel with narrow surface layer of sound absorption material is used to enhance the sound absorption effect. When the noise source of the fan is at the noise level, its spectrum value is often more than one, and there are different values in different spectrum.