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Resistive muffler

A technology of resistive muffler and muffler tube, which is applied in the direction of sound-generating devices and instruments, can solve the problems of poor noise reduction effect of low-frequency sound waves and inapplicability of resistive mufflers, and achieve the effect of preventing damage

Pending Publication Date: 2016-10-12
广州睿成信息科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a resistive muffler to solve the problem that the resistive muffler is not suitable for outdoor use and has poor noise reduction effect on low-frequency sound waves

Method used

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  • Resistive muffler

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Embodiment Construction

[0015] The present invention will be described in further detail below by means of specific embodiments:

[0016] The reference signs in the drawings of the description include: sound inlet pipe 10, cover 20, installation hole 21, dust filter 30, muffler pipe 40, outer lumen 41, inner lumen 42, muffler sheet 50, air outlet pipe 60.

[0017] Such as figure 1 As shown, the resistive muffler includes a sound inlet pipe 10 , a cover 20 , an isolation net, a muffler pipe 40 and an air outlet pipe 60 . There are multiple sound inlet tubes 10 in the shape of a trumpet, and the cover 20 is provided with a plurality of installation holes 21 , and the small-diameter ends of the sound inlet tubes 10 are welded to the installation holes 21 of the cover 20 . The cover 20 is detachably fixed on the muffler pipe 40 by bolts, and the dust screen 30 is clamped on the cover 20 at the joint between the cover 20 and the muffler pipe 40 . The muffler pipe 40 is in the shape of a circular platfo...

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Abstract

The invention belongs to the technical field of noise reduction equipment, and particularly discloses a resistive muffler comprising sound inlet tubes, a sound muffling tube, an air outlet tube, a blocking cover and a dust screen. The blocking cover is provided with installing holes used for installing the sound inlet tubes. There are multiple sound inlet tubes which are trumpet-shaped. The small-diameter ends of the sound inlet tubes are installed on the installing holes of the blocking plate. The sound muffling tube is frustum-shaped. The large-diameter end of the sound muffling tube is detachably connected with the blocking cover. The dust screen is installed on the blocking plate of the connecting part of the sound muffling tube and the blocking plate. The tube body of the sound muffling tube comprises an external tube cavity and an internal tube cavity. The external tube cavity is filled with noise reduction balls. The internal tube cavity is filled with sound muffling material. The air outlet tube is communicated with the small-diameter end of the sound muffling tube. Compared with mufflers in the prior art, outdoor application of the resistive muffler is realized, and effective absorption processing of noise of high, medium and low frequency sound wave is also performed.

Description

technical field [0001] The invention belongs to the technical field of noise reduction equipment, in particular to a resistive muffler. Background technique [0002] The muffler is a device that allows airflow to pass through, but can prevent or reduce sound transmission, and is an important measure to eliminate aerodynamic noise. The muffler can block the propagation of sound waves and allow airflow to pass through, which is an effective tool for noise control. There are many types of mufflers, which can be divided into six main types according to their muffler mechanism, namely resistive muffler, resistive muffler, impedance composite muffler, micro-perforated plate muffler, small hole muffler and active muffler. The resistive muffler is a muffler that uses sound waves to propagate in porous sound-absorbing materials or sound-absorbing structures, and converts sound energy into heat energy due to friction and dissipates it, so that the noise propagating along the pipeline...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16G10K11/162G10K11/178
CPCG10K11/16G10K11/162G10K11/178
Inventor 朱顺军林玲赵向锋
Owner 广州睿成信息科技有限公司
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