Superstructure mute chamber

Abstract

The invention provides a superstructure mute chamber, and relates to the field of sound absorption and insulation materials. The superstructure mute chamber comprises an outer wall body, an inner wallbody and a door plate, wherein the outer wall body and the inner wall body are both in a hollow cuboid shape; the inner side wall of the outer wall body is connected with the outer side wall of the inner wall body through a fixing frame; a first through hole and a second through hole are formed in the side walls of one ends of the outer wall body and the inner wall body correspondingly; the sidewalls of one ends of the first through hole and the second through hole are hinged to the side wall of one end of the door plate; the outer wall body comprises an outer decoration layer; a sound insulation layer is arranged on the inner side wall of the outer decoration layer; the inner wall body comprises a sound absorption superstructure material layer; the sound absorption superstructure material layer comprises a plurality of unit bodies; each unit body is composed of a wavelength tube and a Helmholtz resonance cavity; and the outer side wall of one end of the sound absorption superstructure material layer is connected with the fixing frame, and the outer side wall of the other end of the sound absorption superstructure material layer is connected with a surface micro-perforated plate.The superstructure mute chamber is good in sound absorption and insulation effect, capable of reducing toxicity, small in occupied space and long in service life.

Description

technical field [0001] The invention belongs to the field of sound-absorbing and insulating materials, and in particular relates to a super-structured sound-absorbing room. Background technique [0002] The silent room, also known as the sound absorption and isolation room, is a sound insulation test device designed for the product manufacturing workshop with test requirements. The sound absorption of the four sides and the top surface of the quiet room, and the sound insulation of the bottom layer make the room achieve a low noise environment. The noise value in the quiet room is less than 35-40dB(A). In addition to the sound absorption system, the quiet room should also be equipped with sound insulation doors, windows, ventilation systems, electrical systems, etc. according to actual needs, which can be used for precision instruments, motors, audio, Transformers, etc. are tested. [0003] The quiet room is mainly divided into two categories according to the scope of appli...

AI Technical Summary

Problems solved by technology

The main body of the existing quiet room uses square steel as the skeleton, the outer panel is made of environmentally friendly high-quality glass steel plate, the inner panel is made of porous aluminum plate, high-quality sound-absorbing cotton, sound-insulating material and damping paint, and in addition to the sound-absorbing material, an additional The air layer with a larger thickness can improve the noise reduction effect of low-frequency noise. However, the traditional construction process needs to use glue containing harmful chemicals such as formaldehyde to paste the composite panels. After the installation, it needs to be ventilated for a period of time before use. Plastics for injection molding are more prone to aging and deterioration, resulting in odor

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