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Large air volume composite muffler

A technology of muffler and large air volume, applied in muffler devices, machines/engines, engine components, etc., can solve the problems of small channel area, large thickness of inserts, and unsatisfactory noise reduction effect.

Active Publication Date: 2018-04-03
XIAMEN JIADA GREEN CONSTRUCION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0045] In order to overcome the disadvantages of the existing resistive muffler, such as large insert thickness, wide air flow channel, and small effective channel area, which lead to unsatisfactory muffler effect

Method used

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  • Large air volume composite muffler
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  • Large air volume composite muffler

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Experimental program
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Effect test

Embodiment Construction

[0105] exist figure 1 , 2 In the first embodiment shown, a large air volume and high-efficiency composite muffler is composed of a straight-pipe muffler shell (1), two-end flanges (2), muffler inserts (3) and an airflow channel (4) , the inner wall of the muffler shell (1) is not provided with sound-absorbing material; the muffler inserts (3) are A muffler insert (3), B muffler insert (3), B The thickness of the insert (3) is 1 / 2 of the thickness of the A muffler insert (3), and several pieces of A muffler inserts (3) and one piece of B muffler inserts ( 3), the airflow channel (4) between the muffler inserts (3) is consistent, and the airflow channel (4) between the side of the muffler shell (1) and the A muffler insert (3) is the muffler insert (3) 1 / 2 of the airflow channel (4) between ); the length of the muffler insert (3) is 80% of the length of the muffler shell (1), and the muffler insert (3) is close to the muffler flange (2) Installed at one end.

[0106]The thic...

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Abstract

The invention discloses a large air volume composite muffler, which is composed of a muffler shell, two end flanges, a muffler insert, and an air flow channel. The inner wall of the muffler shell is not provided with sound-absorbing materials; the muffler inserts are respectively It is A muffler insert and B muffler insert. The thickness of B muffler insert is 1 / 2 of the thickness of A muffler insert. Several pieces of A muffler insert and one piece of B muffler are installed in each muffler shell. Inserts, the airflow passages between the muffler inserts are consistent, the airflow passage between the side of the muffler shell and the A muffler inserts is half of the airflow passage between the muffler inserts; the length of the muffler inserts is less than The length of the muffler shell, the muffler insert is installed against the end of the muffler flange. The muffler of the present invention has large muffler capacity, high upper limit of high-frequency failure, high ratio of effective ventilation area, and small volume, and can meet strict muffler requirements especially when two mufflers are used in series.

Description

technical field [0001] The invention relates to a resistive muffler, in particular to a composite muffler with a large air volume. Background technique [0002] The resistive muffler is a device that prevents sound transmission and allows airflow to pass through, and is an important measure to eliminate aerodynamic noise. Resistive mufflers mainly use porous sound-absorbing materials to reduce noise. Fixing the sound-absorbing material on the inner wall of the airflow channel or arranging it in a certain way in the pipeline constitutes a resistive muffler. When the sound wave enters the resistive muffler, a part of the sound energy is converted into heat energy and dissipated in the pores of the porous material by friction, so that the sound wave passing through the muffler is weakened. The resistive muffler of the resistive muffler uses sound waves to frictionally absorb sound energy in a porous and connected sound-absorbing material to eliminate sound. The main control ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N1/24
Inventor 林嘉祥林洁杨锦勇
Owner XIAMEN JIADA GREEN CONSTRUCION ENG CO LTD
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