Novel silencing device

A muffler device and a new type of technology, applied in muffler devices, engine components, machines/engines, etc., can solve the problems of large pressure loss and small transmission loss of mufflers, and achieve small pressure loss, small exhaust resistance, and reduced exhaust gas. The effect of air resistance

Inactive Publication Date: 2018-02-23
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of excessive pressure loss and too small transmission loss of some existing mufflers, the present invention provides a new type of muffler with a special structure, which can make full use of the limited space and has greater transmission loss and less pressure loss

Method used

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Embodiment

[0024] refer to Figure 1-2 , a new type of muffler device, which is composed of two square mufflers with the same shape and size connected in parallel. A perforated plate 12 with micro holes is used inside the two mufflers to separate the muffler into a first chamber and a second chamber. The perforated plate 12 There is an asbestos layer on the surface, and through holes are evenly distributed on the perforated plate. and the noise reduction after the second chamber muffler, thereby increasing the noise reduction effect of the muffler. The sectional view of the muffler is composed of two square mufflers (such as figure 2 shown).

[0025] The inner cavity of the first chamber is provided with a mesh plate 11, and the first chamber is divided into the first upper chamber 3 and the first lower chamber 10 by the mesh plate 11, and the flange 1 is respectively connected to the first lower chamber 3 through the air inlet pipe 2. The first upper chamber 3 and the first lower ch...

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PUM

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Abstract

The invention is a novel muffler device. Two identical mufflers are connected in parallel, and the inner cavity is separated by a micro-perforated plate and asbestos between the two mufflers. The inner cavity of the muffler is divided into two Two exhaust chambers make the exhaust noise collide back and forth in the exhaust channel. The asbestos layer can absorb part of the noise. The insertion pipe of the muffler adopts a tapered pipe to reduce the exhaust resistance of the muffler. The airflow of the two mufflers passes through After the second chamber, it joins in the exhaust pipe and exits the muffler. Through simulation and testing, the noise reduction effect of the muffler of the invention is better than that of the traditional muffler, and the exhaust resistance of the muffler is lower than that of the traditional muffler.

Description

technical field [0001] The invention relates to a muffler, in particular to a novel muffler. Background technique [0002] At present, a common muffler (Muffler) is a device that prevents sound transmission and allows airflow to pass through, and is an important measure to eliminate aerodynamic noise. Traditional mufflers are composed of flanges, air inlet pipes, chambers, insert pipe partitions and outlet pipes. The flanges are connected to the exhaust port of the engine, the inlet pipes are welded to the flanges, and the airflow enters through the air inlet pipes. Cavity, the sound is muffled in the cavity, and the airflow passes through the cavity to exhaust the muffler from the outlet pipe. However, with the development of society, the requirements for noise reduction are getting higher and higher. Practice shows that simple mufflers often fail to meet the requirements of transmission loss and pressure loss. Contents of the invention [0003] In order to overcome the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/10
CPCF01N1/10
Inventor 杨孟杰熊文清唐荣江刘仁顺姚春革刘夫云张应红
Owner GUILIN UNIV OF ELECTRONIC TECH
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