CN216077269U

CN216077269U - Folding repeated silencer structure

Info

Publication number: CN216077269U
Application number: CN202121762024.2U
Authority: CN
Inventors: 丁超; 张浪
Original assignee: Chongqing Qinchuan Shizhong Auto Fitting Co ltd
Current assignee: Chongqing Qinchuan Shizhong Auto Fitting Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-03-18
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a folding repeated silencer structure, which comprises a silencer shell, an air inlet pipe, a first air outlet pipe and a second air outlet pipe, wherein the silencer shell comprises a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, the silencer shell is divided into a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity by the first partition plate, the second partition plate, the third partition plate and the fourth partition plate, and various perforated pipes are connected in the cavities to achieve the effect of eliminating noise. The utility model has the beneficial effects that: the silencer has good working effect in the noise environment of high, medium and low frequency bands, and is compact in structure and easy to install.

Description

Folding repeated silencer structure

Technical Field

The utility model relates to a folding repeated silencer structure, and belongs to the field of automobile parts.

Background

Mufflers can be classified into resistive mufflers, reactive mufflers, and resistive composite mufflers. The resistive muffler absorbs sound energy transmitted in the pipeline by properly arranging sound absorbing materials in the pipeline, and has the characteristic of good sound elimination effect in a medium-high frequency range; the reactive muffler utilizes the reflection or interference in the pipelines or resonant cavities with various shapes and sizes so as to reduce the output sound energy, and has narrower muffling frequency band and better muffling effect at medium and low frequencies; the impedance composite muffler combines the resistive muffler and the reactive muffler, so that the impedance composite muffler has a good muffling effect from low frequency to high frequency. The utility model discloses a back silencer is the compound silencer of impedance. However, the existing silencer has unreasonable distribution of air holes, unsatisfactory silencing effect and poor silencing effect at high, medium and low frequencies.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a folding repeated silencer structure, which realizes the increase of the silencing effect and solves the problem of poor silencing effect of high, medium and low frequencies.

In order to achieve the purpose, the technical scheme of the utility model is as follows: the silencer comprises a silencer shell, an air inlet pipe, a first air outlet pipe and a second air outlet pipe, wherein the silencer shell comprises a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, and the first partition plate, the second partition plate, the third partition plate and the fourth partition plate divide the silencer shell into a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity;

a third chamber penetrates through the second partition plate, the first partition plate is connected to the first chamber, a first perforated pipe is arranged, the third chamber penetrates through the third partition plate, the fourth partition plate is connected to the fifth chamber, a second perforated pipe is arranged, the perforation of the first perforated pipe is located in the second chamber, and the perforation of the second perforated pipe is located in the fourth chamber;

the fifth chamber is connected to the first chamber and is provided with a third perforated pipe, perforations of the third perforated pipe are positioned in the second chamber and the fourth chamber, the fifth chamber is connected to the first chamber and is also provided with a fourth perforated pipe with the same structure, the fourth perforated pipe is positioned below the third perforated pipe, the ports of the third perforated pipe and the fourth perforated pipe in the first chamber are connected through a hose, and the other port of the fourth perforated pipe is connected with the first air outlet pipe in the fifth chamber;

the first chamber is connected with the fifth chamber and is provided with a fifth perforated pipe, the perforations of the fifth perforated pipe are positioned in the second chamber and the fourth chamber, the first chamber is connected with the fifth chamber and is also provided with a sixth perforated pipe with the same structure, the sixth perforated pipe is positioned below the fifth perforated pipe, the fifth perforated pipe is connected with a port of the second air outlet pipe in the fifth chamber through a hose, and the other port of the sixth perforated pipe is connected with the second air outlet pipe in the first chamber.

Furthermore, the first chamber and the fifth chamber are expansion chambers, and the second chamber and the fourth chamber are filled with silencing cotton.

Furthermore, the sectional area of the air inlet pipe is larger than that of the first air outlet pipe and that of the second air outlet pipe.

Furthermore, the first partition plate, the second partition plate, the third partition plate and the fourth partition plate are provided with a plurality of partition plate holes.

The utility model has the beneficial effects that: the silencer has good working effect in the noise environment with high, medium and low frequency bands, has particularly good medium and high frequency effects by utilizing the repeatedly folded perforated pipe to make a round trip through the chamber filled with the silencing cotton, and has compact structure and easy installation.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention.

Fig. 2 is a schematic cross-sectional view of a first separator plate according to the present invention.

Fig. 3 is a schematic cross-sectional view of a third separator plate according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings.

The silencer comprises a silencer shell 1, an air inlet pipe 2, a first air outlet pipe 3 and a second air outlet pipe 4, wherein the silencer shell 1 comprises a first partition plate 5, a second partition plate 6, a third partition plate 7 and a fourth partition plate 8, and the silencer shell 1 is divided into a first cavity 9, a second cavity 10, a third cavity 11, a fourth cavity 12 and a fifth cavity 13 by the first partition plate 5, the second partition plate 6, the third partition plate 7 and the fourth partition plate 8;

a first perforated pipe 14 is arranged by penetrating the second partition plate 6 from the third chamber 11 and connecting the first partition plate 5 to the first chamber 9, a second perforated pipe 15 is arranged by penetrating the third partition plate 7 from the third chamber 11 and connecting the fourth partition plate 8 to the fifth chamber 13, the perforations of the first perforated pipe 14 are positioned in the second chamber 10, and the perforations of the second perforated pipe 15 are positioned in the fourth chamber 12;

a third perforated pipe 16 is arranged by connecting a fifth chamber 13 to the first chamber 9, the perforations of the third perforated pipe 16 are positioned in the second chamber 10 and the fourth chamber 12, a fourth perforated pipe 17 with a consistent structure is also arranged by connecting the fifth chamber 13 to the first chamber 9, the fourth perforated pipe 17 is positioned below the third perforated pipe 16, the third perforated pipe 16 and the fourth perforated pipe 17 are connected by a hose at the port in the first chamber 9, and the other port of the fourth perforated pipe 17 is connected with the first air outlet pipe 3 in the fifth chamber 13;

a fifth perforated pipe 18 is arranged in the first chamber 9 and connected to the fifth chamber 13, the perforations of the fifth perforated pipe 18 are positioned in the second chamber 10 and the fourth chamber 12, a sixth perforated pipe 19 with the same structure is also arranged in the first chamber 9 and connected to the fifth chamber 13, the sixth perforated pipe 19 is positioned below the fifth perforated pipe 18, the fifth perforated pipe 18 is connected with the port of the second air outlet pipe 4 in the fifth chamber 13 through a hose, and the other port of the sixth perforated pipe 19 is connected with the second air outlet pipe 4 in the first chamber 9.

The first chamber 9 and the fifth chamber 13 are expanding chambers, which can reduce middle and low frequency noise, the second chamber 10 and the fourth chamber 12 are filled with silencing cotton for reducing middle and high frequency noise and airflow friction noise, the third chamber 11 is a sealed chamber, and waste gas can only be discharged from the first perforated pipe 14 and the second perforated pipe 15.

In this embodiment, the exhaust gas enters the third chamber 11 through the inlet pipe 2, and is divided into two parts, one part enters the first chamber 9 through the first perforated pipe 14, passes through the fifth perforated pipe 18 and the sixth perforated pipe 19 in the first chamber 9 and is discharged by the second outlet pipe 4, and the other part reaches the second chamber 10 through the second perforated pipe 15 and is discharged by the first outlet pipe 3 through the third perforated pipe 16 and the fourth perforated pipe 17; during this period, each exhaust gas was denoised by passing through the perforated pipe 5 times, which was excellent in the effect of middle and high frequency noise, and the perforated pipes were stacked together to make the volume small.

The sectional area of the air inlet pipe 2 is larger than that of the first air outlet pipe 3 and the second air outlet pipe 4, and the exhaust requirement is met.

First baffle 5, second baffle 6, third baffle 7, fourth baffle 8 all are equipped with several baffle hole 20, prevent that atmospheric pressure from too big leading to the silencer to damage.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the embodiments are only used to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the present description should not be construed as a limitation to the present invention.

Claims

1. A folding repeating formula silencer structure which characterized in that: the silencer comprises a silencer shell (1), an air inlet pipe (2), a first air outlet pipe (3) and a second air outlet pipe (4), wherein the silencer shell (1) comprises a first partition plate (5), a second partition plate (6), a third partition plate (7) and a fourth partition plate (8), and the silencer shell (1) is divided into a first cavity (9), a second cavity (10), a third cavity (11), a fourth cavity (12) and a fifth cavity (13) by the first partition plate (5), the second partition plate (6), the third partition plate (7) and the fourth partition plate (8);

a first perforated pipe (14) is arranged from the third chamber (11) through the second partition (6) and the first partition (5) to the first chamber (9), a second perforated pipe (15) is arranged from the third chamber (11) through the third partition (7) and the fourth partition (8) to the fifth chamber (13), the perforations of the first perforated pipe (14) are located in the second chamber (10), and the perforations of the second perforated pipe (15) are located in the fourth chamber (12);

a third perforated pipe (16) is connected to the first chamber (9) by the fifth chamber (13), the perforation of the third perforated pipe (16) is positioned in the second chamber (10) and the fourth chamber (12), a fourth perforated pipe (17) with a consistent structure is also arranged on the first chamber (9) connected by the fifth chamber (13), the fourth perforated pipe (17) is positioned below the third perforated pipe (16), the third perforated pipe (16) and the port of the fourth perforated pipe (17) in the first chamber (9) are connected by a hose, and the other port of the fourth perforated pipe (17) and the first air outlet pipe (3) are connected in the fifth chamber (13);

a fifth perforated pipe (18) is arranged in the first chamber (9) and connected to the fifth chamber (13), the perforations of the fifth perforated pipe (18) are positioned in the second chamber (10) and the fourth chamber (12), a sixth perforated pipe (19) with a consistent structure is further arranged in the first chamber (9) and connected to the fifth chamber (13), the sixth perforated pipe (19) is positioned below the fifth perforated pipe (18), the fifth perforated pipe (18) is connected with the port of the second air outlet pipe (4) in the fifth chamber (13) through a hose, and the other port of the sixth perforated pipe (19) is connected with the second air outlet pipe (4) in the first chamber (9).

2. A folding compound muffler structure as claimed in claim 1, wherein: the first chamber (9) and the fifth chamber (13) are expansion chambers, and the second chamber (10) and the fourth chamber (12) are filled with silencing cotton.

3. A folding compound muffler structure as claimed in claim 1, wherein: the sectional area of the air inlet pipe (2) is larger than that of the first air outlet pipe (3) and the second air outlet pipe (4).

4. A folding compound muffler structure as claimed in claim 1, wherein: the first partition plate (5), the second partition plate (6), the third partition plate (7) and the fourth partition plate (8) are all provided with a plurality of partition plate holes (20).