Full-frequency sound absorption component and making method

Abstract

The invention discloses a full-range sound absorption member as well as relevant fabrication method. A surface punched sound absorption film of the full-range sound absorption member is made of a metal sheet; a micropunched sound absorption film is composed of a macromolecule non-metal material; the micropunched sound absorption film can fulfill crossed winding along folding lines on both sides to support racks to supports the surface punched sound absorption plate and the protection panel; moreover, a triangular resonance cavity is formed; the micropunched sound absorption film can realize crossed connection along folding lines to support the surface punched sound absorption plate and the protection panel on both sides, so as to form a triangular resonance cavity. The invention adopts a numerically-controlled device to perform fabrication, utilizes a combination of a double-layer micropunched sound absorption film (sheet) resonance sound absorption structure with the surface punched sound absorption plate resonance sound absorption structure; meanwhile, the depth of the background resonance cavities are all continuously transited, so that the full-range sound absorption member can guarantee that noise adsorption performances in all frequency ranges realizing perfect effects. Therefore, the invention is applicable for places with higher purification requirements and needing denoise measures.

Description

technical field [0001] The invention relates to a new type of sound-absorbing component, in particular to an environment-friendly, full-band and full-frequency sound-absorbing component and a manufacturing method thereof. Background technique [0002] At present, known sound-absorbing components are divided into two categories: the first type is a sound-absorbing component composed of porous sound-absorbing materials; the second type is a sound-absorbing component composed of a resonant sound-absorbing structure of a micro-perforated plate. Among them, the first type of porous sound-absorbing material has a good absorption effect on medium and high-frequency noise, but has a poor absorption effect on low-frequency noise; the second type of micro-perforated plate resonant sound-absorbing component has a good sound-absorbing effect near the resonant absorption frequency, and is far away from the resonant frequency. , the absorption is reduced. Therefore, neither the sound-abs...

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Problems solved by technology

[0003] In order to overcome the shortcomings that existing sound-absorbing components cannot achieve full-band sound absorption, the purpose of the present invention is to provide a full-frequency sound-absorbing component, which can not only effectively absorb noise in various frequency bands, but also does not require Filled with porous sound-absorbing material, so cleaning is non-polluting to the human body

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