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Resonant silencer

A muffler and noise reduction technology, which is applied in the direction of instruments and sound-emitting devices, can solve the problems of small noise reduction range and narrow frequency bandwidth, and achieve the effect of widening the noise reduction amount and increasing the noise reduction range

Inactive Publication Date: 2015-11-04
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the embodiment of the present invention, a resonant muffler is provided to solve the problems of small muffler range and narrow frequency bandwidth in the prior art.

Method used

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments, but it is not intended to limit the present invention.

[0029] See figure 2 According to an embodiment of the present invention, the resonance type muffler of this embodiment includes a muffler main body 10, which includes an inner wall 11 forming a sound flow channel 20, and the inner wall 11 has a plurality of sound flow channels 20 communicating with the inner wall 11 Muffler hole 12. The muffler body 10 further includes a plurality of muffler cavities 13 arranged outside the inner wall 11, the muffler cavities 13 communicate with the muffler holes 12 in a one-to-one correspondence, and the muffler cavities 13 correspond to at least two different resonance frequencies. The shape of the sound flow channel 20 is configured to allow sound to pass along the surface of the muffler hole 12, so that the muffler cavity 13 acts as a resonator to absorb mid...

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PUM

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Abstract

The invention provides a resonant silencer. The resonant silencer comprises a silencing main body part. The silencing main body part comprises an inner wall forming a sound flow channel. A plurality of silencing holes communicated with the sound flow channel are arranged in the inner wall. The silencing main body part comprises a plurality of silencing cavities arranged outside the inner wall. The plurality of silencing cavities and the plurality of silencing holes are communicated in one-to-one correspondence. The plurality of silencing cavities correspond to at least two different frequencies. The resonant silencer solves the problems effectively that a silencing scope of a resonant silencer is narrow and the frequency band width is short in the prior art.

Description

Technical field [0001] The present invention relates to the technical field of sound processing, in particular to a resonance muffler. Background technique [0002] The form of the resonance muffler is to connect the opening of the pipe to the resonance cavity, and the air column at the small hole and the air in the cavity form an elastic resonance system. When the external noise frequency is the same as the natural frequency of the resonance system, The air column in the small hole resonates and violently rubs against the hole wall. The friction can consume sound energy, thereby achieving the purpose of noise reduction. [0003] The resonance type muffler in the prior art knows from the principle of resonance silencing. Only when the frequency of the external sound wave is consistent with the natural frequency of the resonator, the silencing system composed of the resonator has the most significant effect and the sound wave attenuation is the strongest. At frequency, the amount o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/172
Inventor 魏亮赵亮何国军汪俊勇聂旺辉李冰凝李志强于娜李毛骨梁俣冯鹏程骆梦思黄忠林刘霄梁焯劲王亚楠聂睿朱金哲黄荣操贾建立杨葛东
Owner GREE ELECTRIC APPLIANCES INC
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