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Silencer and engine

A muffler and noise reduction technology, which is applied in the direction of machines/engines, engine components, noise reduction devices, etc., can solve the problems that the muffler is easy to be limited by temperature, easy to age, and the sound-absorbing cotton is easy to deform.

Pending Publication Date: 2020-06-02
深圳联合飞机科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the higher the frequency, the stronger the sound wave attenuation, but the sound-absorbing cotton is easy to deform and age under continuous high temperature
[0003] It can be seen that the traditional muffler is easily limited by temperature and has a low service life

Method used

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  • Silencer and engine
  • Silencer and engine
  • Silencer and engine

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0096] Example 1: When the number of silencer components is two, these two silencer components are respectively recorded as silencer component 1 and silencer component 2, and the silencer components 1 and 2 are arranged in a row, and the silencer component 1 is the first silencer component , the silencer assembly 2 is the last silencer assembly, the second end of the second resonance chamber 11 of the silencer assembly 1 is in full contact with the closed end of the first expansion chamber 3, and the closed end of the second expansion chamber 8 of the silencer assembly 2 In full contact with the second end of the first resonance chamber 5 .

example 2

[0097] Example 2: When the number of silencer assemblies is three, these three silencer assemblies are respectively recorded as silencer assembly 1, silencer assembly 2, and silencer assembly 3. Noise reduction component 1 is the first noise reduction component, noise reduction component 2 is the middle noise reduction component, and noise reduction component 2 is the last noise reduction component. 2 is the sound-absorbing assembly 3, the second end of the second resonance chamber 11 in the sound-absorbing assembly 2 is in full contact with the closed end of the second expansion chamber 8 of the sound-absorbing assembly 1, and the second expansion chamber 8 of the sound-absorbing assembly 2 The closed end of the sound-absorbing assembly 3 is in full contact with the second end of the second resonance chamber 11, and the second end of the second resonance chamber 11 of the sound-absorbing assembly 1 is in full contact with the closed end of the first expansion chamber 3, and th...

example 3

[0098] Example 3: When the number of silencer components is N, and N is an integer greater than 3, then the N silencer components are respectively recorded as silencer components 1, ..., silencer components i, ..., silencer components N, where i is N -One of the 2 sound-absorbing assemblies, the sound-absorbing assembly 1, ..., the sound-absorbing assembly i..., the sound-absorbing assembly N are arranged in a row, and the sound-absorbing assembly 1 is the first sound-absorbing assembly, and the sound-absorbing assembly i is the first. The middle silencer component, the silencer component N is the last silencer component, then the previous set of silencer components of the silencer component i is the silencer component i-1, and the next silencer component of the silencer component i is the silencer component i+1, then the silencer The second end of the second resonance chamber 11 in component i is in full contact with the closed end of the second expansion chamber 8 of the nois...

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PUM

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Abstract

The embodiment of the invention provides a silencer and an engine. The silencer comprises an air inlet pipe, a silencing chamber, a first expansion chamber, a first baffle and a first resonance chamber, and the air outlet end of the air inlet pipe penetrates through an air inlet of the silencing chamber in a gapless manner and is arranged on the silencing chamber in the manner of being opposite toand communicating with an air inlet of the first expansion chamber; the closed end of the first expansion chamber penetrates through a first through hole of a first baffle plate arranged in the silencing chamber and is arranged in the silencing chamber, one end, provided with an air outlet, of the first resonance chamber serves as a first end to penetrate through an air outlet of the silencing chamber in a gapless manner, and the second end is in complete contact with the closed end of the first expansion chamber. By applying the scheme, the service life can be prolonged without being influenced by the environment temperature.

Description

technical field [0001] The invention relates to the technical field of sound wave processing, in particular to a muffler and an engine. Background technique [0002] At present, the traditional muffler includes a muffler cylinder, and the muffler cylinder is filled with muffler cotton, among which, numerous porous gaps are formed in the muffler cotton and between the muffler cotton, when the sound wave is transmitted from the entrance of the muffler cylinder into these gaps, the The air in the gap is constantly rubbing so that the sound wave is continuously attenuated, thereby achieving the purpose of noise reduction. Generally speaking, the higher the frequency, the stronger the sound wave attenuation, but the sound-absorbing cotton is easy to deform and age under continuous high temperature. [0003] It can be seen that the traditional muffler is easily limited by temperature and has a low service life. Contents of the invention [0004] The purpose of the embodiments ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/08F01N1/10F01N1/02
CPCF01N1/02F01N1/089F01N1/10
Inventor 王辉乞志刚管立鹏
Owner 深圳联合飞机科技有限公司
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