Sound absorption device

A sound-absorbing device and chamber technology, applied in the field of noise reduction, can solve the problems of small space, complex mechanical equipment structure, increased thickness, etc., and achieve the effects of sound absorption, improving the frequency range of sound absorption, and saving space and cost

Pending Publication Date: 2020-11-13
ZHUZHOU NAT INNOVATION RAILWAY TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

At the same time, the noise of more mechanical equipment is concentrated in the low-frequency band, and the current acoustic material needs to increase its thi

Method used

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as figure 1 As shown, the sound absorbing device of this embodiment is used to absorb low-frequency noise generated by mechanical equipment. The specific structure includes an inner panel 1, an outer panel 6 and a partition 3; chamber; wherein the partition plate 3 is located in the chamber, and is used to divide the chamber into a plurality of labyrinth chambers 4, and the plurality of labyrinth chambers 4 are regularly distributed in the chamber; the inner plate 1 is provided with a plurality of first passages Holes 101, each first through hole 101 communicates with each labyrinth chamber 4 in one-to-one correspondence, and the connection between each first through hole 101 and the labyrinth chamber 4 is located at the starting point of the corresponding labyrinth chamber 4, the first A through hole 101 is used to guide the sound...

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Abstract

The invention discloses a sound absorption device, belongs to the technical field of noise reduction, and is used for solving the problems of complex structure and poor noise reduction effect of an existing noise reduction device, whereing the sound absorption device specifically comprises an inner plate, an outer mask and partition plates, a cavity is formed between the inner plate and the outermask; the partition plates are located in the cavity and used for dividing the cavity into one or more labyrinth type cavities. One or more first through holes are formed in the inner plate, the firstthrough holes are communicated with the labyrinth cavities in a one-to-one correspondence manner, and each first through hole is positioned at the starting point of the corresponding labyrinth cavity. The sound absorption device has the advantages of simple structure, good noise reduction effect, wide and adjustable noise reduction frequency band and the like.

Description

technical field [0001] The invention mainly relates to the technical field of noise reduction, in particular to a sound absorbing device. Background technique [0002] In industry and manufacturing, mechanical equipment is a necessary component. Due to the friction, impact force or unbalanced force between the components when the mechanical equipment is running, the mechanical parts and the housing will vibrate and radiate noise. At the same time, the noise of more mechanical equipment is concentrated in the low-frequency band, and the current acoustic material needs to increase its thickness to effectively suppress low-frequency noise, and usually the structure of mechanical equipment is complex and the remaining space after assembly is small. Therefore, how to improve the low-frequency noise of mechanical equipment in a limited and narrow space has become a difficult problem. Contents of the invention [0003] The technical problem to be solved by the present invention ...

Claims

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Application Information

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IPC IPC(8): G10K11/16G10K11/162G10K11/172
CPCG10K11/16G10K11/162G10K11/172
Inventor 王达李登科吴生提李林黄志华
Owner ZHUZHOU NAT INNOVATION RAILWAY TECH CO LTD
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