Soundproof door for acoustical laboratory

Abstract

The invention relates to a soundproof door used in an acoustic laboratory, comprising a door body, a buffer layer made of rubber elastic body is provided on the outer side of the door body and the contact surface of the door panel; two sides of the door body are provided with PET A sound-absorbing layer made of fibers, the sound-absorbing layer is provided with a plurality of first sound-absorbing protrusions and a plurality of second sound-absorbing protrusions, the cross-section of the first sound-absorbing protrusions is a semicircular structure, and the second sound-absorbing protrusions The cross-section is an inverted trapezoidal structure, and the first sound-absorbing strip, the second sound-absorbing strip and the sound-absorbing layer are of an integrated structure; the first sound-absorbing strip and the second sound-absorbing strip are arranged at intervals and evenly distributed on the sound-absorbing layer; A reinforcing member is provided inside the door body, and the reinforcing member includes three reinforcing steel plates. The cross-section of the reinforcing steel plates has an S-shaped structure. The present invention has simple structure, high strength and good sound insulation effect.

Description

technical field [0001] The invention relates to a door, in particular to a sound insulation door used in an acoustic laboratory. Background technique [0002] The acoustic laboratory is a special laboratory for simulating various ideal sound field conditions and measuring various parameters to study the law of sound wave propagation and the sound absorption, sound insulation and noise reduction performance of building materials, building structures, and building components . It is mainly used to simulate the diffusion sound field, free sound field and the propagation of sound waves in the pipeline, etc. There are reverberation chambers, anechoic chambers, sound insulation rooms, etc. The door used in the sound insulation room of the acoustic experiment in the prior art is often simply made of sound-absorbing panels, and there are small gaps between the door and the door frame. Occasionally, there will be sound leakage during the test, and its strength and sound insulation e...

AI Technical Summary

Problems solved by technology

In the prior art, the doors used in sound-proof rooms for acoustic experiments are often simply made of sound-absorbing panels, and there are small gaps between the door and the door frame. Occasionally, there will be sound leakage during the test, and its strength and sound insulation effect are often not good.

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