CN216077267U

CN216077267U - Silencer structure

Info

Publication number: CN216077267U
Application number: CN202121760440.9U
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 silencer structure, which is characterized in that: the silencer comprises a silencer shell, an air inlet pipe and two exhaust pipes, wherein the silencer shell is provided with an inner cavity with a right-angled triangle-shaped longitudinal section, a first partition plate, a second partition plate and a third partition plate are arranged in the silencer shell at intervals and used for dividing the inner cavity of the silencer shell into a first cavity, a second cavity, a third cavity and a fourth cavity, the areas of the first partition plate, the second partition plate and the third partition plate are sequentially increased, the volumes of the second cavity, the third cavity and the fourth cavity are sequentially increased, the air inlet pipe penetrates into the silencer shell from the first cavity, and the air inlet pipe is directly communicated with the fourth cavity, and the silencer has the advantages that: the silencer has obvious silencing effect at medium and low frequencies, so that the automobile is quite quiet and comfortable in the acceleration process.

Description

Silencer structure

Technical Field

The utility model relates to the field of automobile exhaust systems, in particular to a silencer structure.

Background

The automobile silencer is a component which is installed at the rear section of an automobile exhaust pipe and is used for reducing noise generated when an automobile engine works. The existing silencer is composed of an airflow intake pipe, a silencing barrel and an exhaust pipe, wherein exhaust gas of an automobile engine is buffered for many times in the silencing barrel through the intake pipe, the flow rate of the gas is changed, and the silencing effect is achieved.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a silencer structure which is reasonable in air hole distribution, good in air flow buffering effect and good in medium and low frequency silencing effect.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a muffler structure characterized in that: including silencer casing, an intake pipe, two blast pipes, silencer casing has the inner chamber that longitudinal section is right triangle, wherein the interval is provided with first baffle, second baffle, third baffle in the silencer casing, be used for with the inner chamber of silencer casing is split into first cavity, second cavity, third cavity, fourth cavity, the area of first baffle, second baffle, third baffle increases in proper order, the volume of second cavity, third cavity, fourth cavity increases in proper order, the intake pipe penetrates the silencer casing from the first cavity, and the intake pipe directly communicates the fourth cavity, a plurality of through-holes have all been distributed in the position that corresponds first cavity, third cavity in the intake pipe, two blast pipes directly communicate the first cavity, a plurality of through-holes have all been distributed on first baffle, the second baffle, and a connecting pipe which is directly communicated with the first cavity and the fourth cavity is further arranged in the silencer shell, and a plurality of through holes are distributed on the connecting pipe at positions corresponding to the second cavity.

Further, the exhaust pipe sequentially penetrates through the first partition plate, the second partition plate and the third partition plate from the first chamber, and penetrates out of the silencer shell body at the rear part of the fourth chamber.

Further, the diameter of the air inlet pipe is larger than that of the connecting pipe, and the sum of the sectional areas of the two exhaust pipes is not smaller than that of the air inlet pipe.

Furthermore, the number of the through holes on the air inlet pipe corresponding to the third chamber is more than that of the through holes on the air inlet pipe corresponding to the first chamber.

The beneficial effects of the utility model include: the silencer has obvious silencing effect at medium and low frequencies, so that the automobile is quite quiet and comfortable in the acceleration process.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 1;

fig. 4 is a cross-sectional view of C-C in fig. 1.

Detailed Description

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

A silencer structure as shown in figures 1-4 comprises a silencer shell 1, an air inlet pipe 2 and two air outlet pipes 3, wherein the silencer shell 1 is provided with an inner cavity with a right-angled triangle-shaped longitudinal section, and the corners of the inner cavity are in arc transition. The silencer shell 1 is internally provided with a first partition plate 4, a second partition plate 5 and a third partition plate 6 at intervals, and the first partition plate, the second partition plate and the third partition plate are used for dividing an inner cavity of the silencer shell 1 into a first cavity 7, a second cavity 8, a third cavity 9 and a fourth cavity 10. The areas of the first partition plate 4, the second partition plate 5 and the third partition plate 6 are sequentially increased along with the shape of the inner cavity of the silencer shell, and the first partition plate 4, the second partition plate 5 and the third partition plate 6 mainly play roles in partitioning and supporting. The volumes of the second chamber 8, the third chamber 9 and the fourth chamber 10 also increase in sequence as shown in fig. 1. The air inlet pipe 2 penetrates into the silencer shell 1 from the first cavity 7, and the air inlet pipe 2 sequentially penetrates through the first partition plate 4, the second partition plate 5 and the third partition plate 6 to be directly communicated with the fourth cavity 10. A plurality of through holes are uniformly distributed on the air inlet pipe 2 at positions corresponding to the first chamber 7 and the third chamber 9, so that part of air in the air inlet pipe 2 directly enters the first chamber 7, and part of air directly enters the first chamber 7 and the third chamber 9, but most high-speed air directly enters the fourth chamber 10 for buffering. As shown in fig. 2 and 3, a plurality of through holes are uniformly distributed on the first partition plate 4 and the second partition plate 5, a connecting pipe 11 for directly communicating the first chamber 7 with the fourth chamber 10 is further arranged in the muffler shell 1, and a plurality of through holes are distributed on the connecting pipe 11 at positions corresponding to the second chamber 8. Whereby the gas buffered by the fourth chamber 10 enters the second chamber 8 and the first chamber 7 through the connecting tube. Because the first partition plate 4 and the second partition plate 5 are distributed with a plurality of through holes, the gas in the third chamber 9 and the second chamber 8 can also enter the first chamber 7 through the through holes. And the last two exhaust pipes 3 are directly communicated with the first chamber 7 to discharge the waste gas after the silencing treatment. In the structure shown in fig. 1, two exhaust pipes 3 directly communicate with a first chamber 7, and the exhaust pipes 3 sequentially pass through a first partition plate 4, a second partition plate 5 and a third partition plate 6 from the first chamber 7 and penetrate out of the muffler shell 1 at the rear part of a fourth chamber 10.

Further, the diameter of the air inlet pipe 2 is larger than that of the connecting pipe 11, so that part of the air in the air inlet pipe 2 can enter the first chamber 7 and the third chamber 9 for flow dividing and buffering. In the embodiment, two exhaust pipes 3 are adopted, so that the sum of the sectional areas of the two exhaust pipes 3 is not less than the sectional area of the air inlet pipe 2, and the air flow is ensured to be discharged without obstruction.

As shown in fig. 1, the number of the through holes corresponding to the third chamber 9 in the intake pipe 2 is greater than the number of the through holes corresponding to the first chamber 7 in the intake pipe 2, so that the amount of the air directly entering the first chamber 7 in the intake pipe is smaller, the air is directly discharged after the first chamber is buffered and decelerated, the amount of the air flow entering the third chamber 9 is larger, and the air flow returns to the first chamber 7 after being buffered by the third chamber 9 and the second chamber 8 and is discharged, so that the silencing effect is good, and particularly, the silencing effect for medium and low frequencies is good.

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 muffler structure characterized in that: comprises a silencer shell (1), an air inlet pipe (2) and two exhaust pipes (3), wherein the silencer shell (1) is provided with an inner cavity with a longitudinal section in a right triangle shape, a first partition plate (4), a second partition plate (5) and a third partition plate (6) are arranged in the silencer shell (1) at intervals and are used for dividing the inner cavity of the silencer shell (1) into a first cavity (7), a second cavity (8), a third cavity (9) and a fourth cavity (10), the areas of the first partition plate (4), the second partition plate (5) and the third partition plate (6) are sequentially increased, the volumes of the second cavity (8), the third cavity (9) and the fourth cavity (10) are sequentially increased, the air inlet pipe (2) penetrates into the silencer shell (1) from the first cavity (7), and the air inlet pipe (2) is directly communicated with the fourth cavity (10), intake pipe (2) are gone up corresponding the position of first cavity (7), third cavity (9) is evenly distributed and is had a plurality of through-holes, two blast pipe (3) direct intercommunication first cavity (7), it has a plurality of through-holes to equally divide cloth on first baffle (4), second baffle (5), still be provided with direct intercommunication in muffler casing (1) connecting pipe (11) of first cavity (7) and fourth cavity (10), just on connecting pipe (11) corresponding the position distribution of second cavity (8) has a plurality of through-holes.

2. A muffler structure as claimed in claim 1, wherein: the exhaust pipe (3) sequentially penetrates through the first partition plate (4), the second partition plate (5) and the third partition plate (6) from the first cavity (7) and penetrates out of the silencer shell (1) at the rear part of the fourth cavity (10).

3. A muffler structure as claimed in claim 1, wherein: the diameter of the air inlet pipe (2) is larger than that of the connecting pipe (11), and the sum of the sectional areas of the two exhaust pipes (3) is not smaller than that of the air inlet pipe (2).

4. A muffler structure as claimed in claim 1, wherein: the number of the through holes, corresponding to the third cavity (9), in the air inlet pipe (2) is more than that of the through holes, corresponding to the first cavity (7), in the air inlet pipe (2).