Combined type array impedance recombination silencer

Abstract

The invention relates to a noise reduction silencing device, in particular to a combined type array impedance recombination silencer. The combined type array impedance recombination silencer comprises silencing tube bodies, a support, an access door and a flow guide cover. The support is arranged in a latticed shape and provided with an access door frame, the two ends of each silencing tube body are fixedly installed on the corresponding latticed intersection points of the support, the axes of the silencing tube bodies are arranged in parallel in the air flow direction, and the silencing tube bodies are arranged through the support and fixed to a ventilation pipeline. The access door is installed on the access door frame on the support in a matched mode, the access door is of a connecting rod structure and is hinged to the access door frame, and sliding wheels are arranged at the bottom of the access door. The flow guide cover comprises a large-area lower bottom face and a small-area upper bottom face and the large-area lower bottom face is matched with the end faces of the silencing tube bodies. According to the combined type array impedance recombination silencer, the combination type can be reasonably adjusted according to the flow field characteristic, the resistance structure is utilized, the silencing effect of a certain frequency band, especially the middle-low frequency band, is effectively improved, the production efficiency can further be improved, and transportation, storage and maintenance are convenient.

Description

technical field [0001] The invention relates to a noise reduction and muffler device, in particular to a combined array type impedance composite muffler. Background technique [0002] Noise is a kind of sound that causes irritability or is too loud and endangers human health. A muffler is a device that allows airflow to pass through while effectively attenuating noise. The mufflers used in common ventilation systems, such as subways, tunnels, and large-scale building ventilation systems, generally have weak muffler structures, easy leakage of sound-absorbing materials, and insufficient flexibility in the arrangement of muffler pipes, resulting in actual muffler effects. It is not very ideal and other problems; in addition, it is not very convenient in the installation and maintenance of the muffler, and there are a series of shortcomings such as transportation difficulties. Contents of the invention [0003] The purpose of the present invention is to provide a combined a...

AI Technical Summary

Problems solved by technology

The mufflers used in common ventilation systems, such as subways, tunnels, and large-scale building ventilation systems, generally have weak muffler structures, easy leakage of sound-absorbing materials, and insufficient flexibility in the arrangement of muffler pipes, resulting in actual muffler effects. It is not very ideal and other problems; in addition, it is not very convenient in the installation and maintenance of the muffler, and there are a series of shortcomings such as transportation difficulties

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