The honeycomb muffler is a resistive muffler that divides the ventilation duct into multiple small muffler channels, which effectively increases the upper limit failure frequency of the muffler, and makes the muffler have better mid- and high-frequency noise reduction performance. The muffler uses glass Cotton is used as sound-absorbing material, galvanized perforated plate and ultra-fine glass wool cloth are used as the protective layer on the inner surface of the channel, and various air duct sections can be formed according to the selected small channel area. However, because its airflow resistance is larger than that of a chip muffler, its structure is relatively complex, and its volume and weight are relatively large, so it is gradually used less in engineering.
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