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Small-hole high-frequency noise eliminator

A muffler and high-frequency technology, applied in the field of small-hole high-frequency mufflers, can solve the problem of limited noise reduction effect, and achieve the effect of improving the effect, reducing the noise, and improving the effect of eliminating noise.

Inactive Publication Date: 2016-02-24
CHONGQING YUKANG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the technical solution of the above-mentioned patent, only through the sound-absorbing decompression and the sound-absorbing effect of the sound-absorbing cotton to reduce the exhaust noise, the sound-absorbing effect is limited

Method used

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  • Small-hole high-frequency noise eliminator

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Embodiment

[0018] Such as figure 1 As shown, the small-hole high-frequency muffler has a scheme of: comprising a housing 20, one end of the housing 20 is connected to the intake pipe 10, the other end of the housing 20 is connected to the outlet pipe 50, and the housing 20 is provided with a vertical partition 30. The plate 30 divides the inside of the housing 20 into two chambers, left and right. Small holes 31 are uniformly arranged on the partition 30. The total area of ​​the small holes 31 is larger than the cross-sectional area of ​​the intake pipe 10. A deflector 40 is arranged in the right chamber. , the deflectors 40 are radially staggered in the right chamber to form an S-shaped flow channel in the right chamber, and the deflectors 40 are provided with a sound-absorbing layer.

[0019] In addition, in this embodiment, the shell 20 is provided with sound-absorbing materials. The advantage is that the effect of noise reduction is further improved. The sound-absorbing material is...

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Abstract

The invention discloses a small-hole high-frequency noise eliminator. The small-hole high-frequency noise eliminator comprises a housing, wherein one end of the housing is connected with an air inlet pipe; the other end of the housing is connected with an air outlet pipe; a vertical partition plate is arranged in the housing and is used for dividing the inside of the housing into a left cavity and a right cavity; small holes are uniformly distributed on the partition plate; the total area of the small holes is greater than the section area of the air inlet pipe; flow guide plates are arranged in the right cavity; the flow guide plates are radially staggered in the right cavity, so that an S-shaped flow channel is formed in the right cavity; noise elimination layers are arranged on the flow guide plates. The invention aims to provide a small-hole high-frequency noise eliminator, thereby improving the noise elimination effect by using the theory of the small-hole noise eliminator.

Description

technical field [0001] The invention relates to a small-hole high-frequency muffler. Background technique [0002] Noise is one of the three major sources of pollution, and the noise radiated by motor vehicles accounts for about 75% of the noise energy in the entire environment. Therefore, reducing the noise of motor vehicles is the most fundamental way to reduce urban environmental noise. Exhaust noise is the most important noise source of automobiles and engines, which is usually 10dB(A)~15dB(A) higher than the overall engine noise (except exhaust noise). The control of engine exhaust noise can be divided into two aspects: on the one hand, measures can be taken against the noise source itself, which needs to start with the analysis of the noise source mechanism and take corresponding countermeasures; on the other hand, measures include the use of exhaust mufflers and Controls mechanical noise from the engine exhaust manifold. Among them, the most effective and simplest ...

Claims

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Application Information

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IPC IPC(8): F01N1/10
CPCF01N1/10F01N2590/00
Inventor 沈文
Owner CHONGQING YUKANG MACHINERY
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