CN113958386B - Exhaust device with silencing function - Google Patents
Exhaust device with silencing function Download PDFInfo
- Publication number
- CN113958386B CN113958386B CN202111577739.5A CN202111577739A CN113958386B CN 113958386 B CN113958386 B CN 113958386B CN 202111577739 A CN202111577739 A CN 202111577739A CN 113958386 B CN113958386 B CN 113958386B
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- CN
- China
- Prior art keywords
- noise reduction
- inner sleeve
- silencing
- fixedly connected
- outer cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
Abstract
The invention discloses an exhaust device with a noise reduction function, which relates to the technical field of noise reduction devices and comprises an outer cylinder body, wherein gas enters the outer cylinder body through an air inlet pipe, is subjected to noise reduction and then is exhausted from an air outlet pipe; an inner sleeve is arranged inside the outer cylinder body and fixedly connected with the air outlet end plate, a plurality of point type noise reduction modules are fixedly arranged on the inner wall of the inner sleeve, a channel type noise reduction mechanism is fixedly arranged outside the inner sleeve, and a multi-stage reflection mechanism is arranged inside the inner sleeve; the invention can carry out multistage absorption noise reduction on noise by arranging the point type noise reduction module and the channel type noise reduction module, can increase the access brightness of the point type noise reduction mechanism and the channel type noise reduction mechanism on the noise by arranging the multistage reflection mechanism, thereby effectively improving the noise reduction efficiency, can realize integral sound insulation by arranging the soundproof cotton, has efficient noise reduction effect on the noise emitted by the exhaust device in the use process, and has high noise reduction efficiency and simple and convenient assembly.
Description
Technical Field
The invention relates to the technical field of silencing devices, in particular to an exhaust device with a silencing function.
Background
Nowadays, with the stricter and stricter requirements of emission regulations, higher requirements are put on the arrangement and use of the automobile silencer, the requirements of customers on the controllability and the comfort of the whole automobile are higher and higher, and further, the requirements on the performances of the automobile silencer in all aspects are stricter and stricter, such as noise control and the like. The silencer is used as a main part of an automobile and plays a key role in the aspects of noise control and the like of the automobile, so that higher requirements are provided for the silencing function of an automobile exhaust structure, but the silencing capability of the existing exhaust structure is weaker, and the noise reduction effect is to be further improved so as to meet the use requirements.
Disclosure of Invention
The present invention provides an exhaust device with a silencing function, which solves the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
an exhaust device with a noise reduction function comprises an outer cylinder body, wherein one end of the outer cylinder body is connected with an air inlet end plate, the other end of the outer cylinder body is connected with an air outlet end plate, the air inlet end plate is fixedly connected with an air inlet pipe, the air outlet end plate is fixedly connected with an air outlet pipe, and gas enters the outer cylinder body through the air inlet pipe and is discharged from the air outlet pipe after noise reduction;
an inner sleeve is arranged inside the outer cylinder body and fixedly connected with the air outlet end plate, a plurality of point type noise reduction modules are fixedly arranged on the inner wall of the inner sleeve, a channel type noise reduction mechanism is fixedly arranged outside the inner sleeve, and a multi-stage reflection mechanism is arranged inside the inner sleeve;
the point type noise reduction module comprises a conical block fixedly arranged on the inner wall of the inner sleeve, a plurality of outer noise reduction holes are formed in the conical block, a plurality of inner noise reduction covers are fixedly connected inside the conical block, and each inner noise reduction cover is provided with an inner noise reduction hole;
the channel type noise reduction mechanism comprises a plurality of straight type covers fixedly arranged on the outer side of the inner sleeve, a curved type cover is fixedly connected between every two adjacent straight type covers, a plurality of second separation nets are fixedly connected in the straight type covers and the curved type covers, a silencing ball is arranged between every two adjacent second separation nets, a sound transmission channel communicated with the straight type covers is formed in the inner sleeve, and a first separation net is fixedly connected in the sound transmission channel;
the multistage reflecting mechanism comprises a mounting column coaxially arranged in the inner sleeve, the outer side of the mounting column is fixedly connected with a plurality of reflecting covers, and a mounting support is fixedly connected between one end of the mounting column and the inner sleeve.
In a preferred embodiment of the present invention, a plurality of the straight shrouds are equally spaced in the axial direction of the inner jacket, and a plurality of the sound transmission passages and a plurality of the point noise reduction modules are alternately arranged on the inner jacket.
As a preferable technical scheme of the invention, a silencing chamber is arranged between the inner sleeve and the outer cylinder body, and soundproof cotton is filled in the silencing chamber.
As a preferable technical scheme of the invention, one side of the conical block close to the inner sleeve is fixedly connected with a communicating pipe, and the communicating pipe penetrates through the inner sleeve and is communicated with the silencing chamber.
As a preferable technical scheme of the invention, the reflection covers are fixedly sleeved outside the mounting columns, the plurality of reflection covers are arranged at equal intervals, each reflection cover comprises a mounting part and a reflection part, the mounting parts are fixedly connected with the mounting columns, and the inner sides of the reflection parts are fixedly connected with the sound absorption blocks.
As a preferred technical scheme of the invention, the inner wall of the outer cylinder body is fixedly provided with an outer sleeve, and the outer sleeve is provided with a reflecting hole.
As a preferred technical scheme of the invention, the silencing ball is made of ceramic materials, and a silencing channel is formed in the silencing ball.
The invention has the following advantages: the invention can carry out multistage absorption noise reduction on noise by arranging the point type noise reduction module and the channel type noise reduction module, can increase the access brightness of the point type noise reduction mechanism and the channel type noise reduction mechanism on the noise by arranging the multistage reflection mechanism, thereby effectively improving the noise reduction efficiency, can realize integral sound insulation by arranging the soundproof cotton, has efficient noise reduction effect on the noise emitted by the exhaust device in the use process, and has high noise reduction efficiency and simple and convenient assembly.
Drawings
Fig. 1 is a schematic structural view of an exhaust device having a sound deadening function.
Fig. 2 is a sectional view of an exhaust device having a sound deadening function.
Fig. 3 is a schematic structural diagram of a channel noise reduction mechanism in an exhaust device with a sound attenuation function.
Fig. 4 is a schematic perspective view of a point noise reduction module in an exhaust apparatus with a noise reduction function.
Fig. 5 is a cross-sectional view of a mid-point noise reduction module in an exhaust with sound attenuation.
Fig. 6 is a schematic structural view of a multistage reflecting mechanism in an exhaust device having a sound deadening function.
Fig. 7 is a schematic structural view of a reflection cover in an exhaust device having a sound deadening function.
In the figure: 1. an outer cylinder; 2. an air inlet end plate; 3. an air inlet pipe; 4. an air outlet end plate; 5. an air outlet pipe; 6. an outer sleeve; 7. an inner sleeve; 8. a point type noise reduction module; 9. a channel type noise reduction mechanism; 10. sound insulation cotton; 11. a conical block; 12. an outer noise reduction hole; 13. a sound transmission channel; 14. a first screen; 15. a straight cover; 16. a curved cover; 17. a second screen; 18. a sound-deadening ball; 19. a silencing inner cover; 20. a silencing inner hole; 21. a communicating pipe; 22. mounting a column; 23. a reflector; 24. mounting a bracket; 25. an installation part; 26. a reflection section; 27. and a sound absorption block.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-7, an exhaust apparatus with a noise reduction function includes an outer cylinder 1, one end of the outer cylinder 1 is connected with an air inlet end plate 2, and the other end of the outer cylinder 1 is connected with an air outlet end plate 4, wherein the air inlet end plate 2 is fixedly connected with the outer cylinder 1, the air outlet end plate 4 is in threaded connection with the outer cylinder 1, the air inlet end plate 2 is fixedly connected with an air inlet pipe 3, the air outlet end plate 4 is fixedly connected with an air outlet pipe 5, and gas enters the outer cylinder 1 through the air inlet pipe 3 and is discharged from the air outlet pipe 5 after noise reduction;
an inner sleeve 7 is arranged inside the outer cylinder body 1, the inner sleeve 7 is fixedly connected with the air outlet end plate 4, a plurality of point type noise reduction modules 8 are fixedly arranged on the inner wall of the inner sleeve 7, a channel type noise reduction mechanism 9 is fixedly arranged outside the inner sleeve 7, and a multi-stage reflection mechanism is arranged inside the inner sleeve 7;
the point type noise reduction module 8 comprises a conical block 11 fixedly arranged on the inner wall of the inner sleeve 7, a plurality of outer noise reduction holes 12 are formed in the conical block 11, a plurality of silencing inner covers 19 are fixedly connected inside the conical block 11, and a silencing inner hole 20 is formed in each silencing inner cover 19;
the channel type noise reduction mechanism 9 comprises a plurality of straight type covers 15 fixedly arranged on the outer side of the inner sleeve 7, a curved type cover 16 is fixedly connected between every two adjacent straight type covers 15, a plurality of second separation nets 17 are fixedly connected in the straight type covers 15 and the curved type covers 16, a silencing ball 18 is arranged between every two adjacent second separation nets 17, a sound transmission channel 13 communicated with the straight type covers 15 is formed in the inner sleeve 7, and a first separation net 14 is fixedly connected in the sound transmission channel 13;
the multistage reflecting mechanism comprises a mounting column 22 coaxially arranged in the inner sleeve 7, a plurality of reflecting covers 23 are fixedly connected to the outer side of the mounting column 22, and a mounting support 24 is fixedly connected between one end of the mounting column 22 and the inner sleeve 7.
A plurality of the straight shrouds 15 are distributed at equal intervals in the axial direction of the inner jacket 7, and a plurality of the sound transmission passages 13 and a plurality of the point noise reduction modules 8 are arranged alternately on the inner jacket 7.
A silencing chamber is arranged between the inner sleeve 7 and the outer barrel 1, and sound insulation cotton 10 is filled in the silencing chamber.
One side of the conical block 11 close to the inner sleeve 7 is fixedly connected with a communicating pipe 21, and the communicating pipe 21 penetrates through the inner sleeve 7 and is communicated with the anechoic chamber.
The fixed cover of bowl 23 is located the outside of erection column 22, and a plurality of bowls 23 equidistance sets up, and bowl 23 includes installation department 25 and reflection part 26, installation department 25 and erection column 22 fixed connection, and the inboard fixed connection sound absorption piece 27 of reflection part 26.
The inner wall of the outer cylinder body 1 is fixedly provided with an outer sleeve 6, and the outer sleeve 6 is provided with a reflection hole.
The silencing balls 18 are made of ceramic materials, and silencing channels are formed in the silencing balls 18.
In the implementation process of the invention, automobile exhaust enters from the air inlet pipe 3, passes through the outer cylinder 1 and then is discharged from the air outlet pipe 5, and noise generated in the exhaust process is subjected to noise reduction treatment in the following aspects:
1. noise enters the conical block 11 through the outer noise reduction hole 12, then sequentially enters each silencing inner hole 20, and is reduced through multiple reflections of the silencing inner cover 19;
2. noise sound waves enter the straight cover 15 and the curved cover 16 through the sound transmission channel 13, and are silenced and denoised through the silencing ball 18;
3. after entering from the air inlet pipe 3, the noise sound waves enter the point type noise reduction module 8 and the channel type noise reduction mechanism 9 through the multistage reflection of the plurality of reflection covers 23 to reduce noise.
4. Noise reduction and sound insulation are performed using the soundproof cotton 10.
The multiple noise reduction mode can effectively eliminate the noise generated by the exhaust device.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An exhaust device with a noise reduction function comprises an outer cylinder body (1), and is characterized in that one end of the outer cylinder body (1) is connected with an air inlet end plate (2), the other end of the outer cylinder body (1) is connected with an air outlet end plate (4), the air inlet end plate (2) is fixedly connected with an air inlet pipe (3), the air outlet end plate (4) is fixedly connected with an air outlet pipe (5), and gas enters the outer cylinder body (1) through the air inlet pipe (3) and is discharged from the air outlet pipe (5) after noise reduction;
an inner sleeve (7) is arranged inside the outer barrel (1), the inner sleeve (7) is fixedly connected with the air outlet end plate (4), a plurality of point type noise reduction modules (8) are fixedly arranged on the inner wall of the inner sleeve (7), a channel type noise reduction mechanism (9) is fixedly arranged outside the inner sleeve (7), and a multi-stage reflection mechanism is arranged inside the inner sleeve (7);
the point type noise reduction module (8) comprises a conical block (11) fixedly arranged on the inner wall of the inner sleeve (7), a plurality of outer noise reduction holes (12) are formed in the conical block (11), a plurality of silencing inner covers (19) are fixedly connected to the inner part of the conical block (11), and a silencing inner hole (20) is formed in each silencing inner cover (19);
the channel type noise reduction mechanism (9) comprises a plurality of straight type covers (15) fixedly arranged on the outer side of the inner sleeve (7), a curved type cover (16) is fixedly connected between every two adjacent straight type covers (15), a plurality of second separation nets (17) are fixedly connected in the straight type covers (15) and the curved type covers (16), a silencing ball (18) is arranged between every two adjacent second separation nets (17), a sound transmission channel (13) communicated with the straight type covers (15) is formed in the inner sleeve (7), and a first separation net (14) is fixedly connected in the sound transmission channel (13);
the multistage reflecting mechanism comprises a mounting column (22) coaxially arranged in the inner sleeve (7), a plurality of reflecting covers (23) are fixedly connected to the outer side of the mounting column (22), and a mounting support (24) is fixedly connected between one end of the mounting column (22) and the inner sleeve (7).
2. Exhaust device with sound-damping function according to claim 1, characterized in that a plurality of said straight shrouds (15) are distributed equidistantly in the axial direction of the inner jacket (7), and a plurality of sound transmission channels (13) are staggered with a plurality of point noise reduction modules (8) on the inner jacket (7).
3. The exhaust apparatus with a silencing function according to claim 1, wherein a silencing chamber is provided between the inner sleeve (7) and the outer cylinder (1), and sound insulation cotton (10) is filled in the silencing chamber.
4. An exhaust device with a silencing function according to claim 3, wherein one side of the conical block (11) close to the inner sleeve (7) is fixedly connected with a communicating pipe (21), and the communicating pipe (21) penetrates through the inner sleeve (7) and is communicated with the silencing chamber.
5. The exhaust device with the sound attenuation function according to claim 1, wherein the reflection cover (23) is fixedly sleeved outside the mounting column (22), the reflection covers (23) are arranged at equal intervals, the reflection cover (23) comprises a mounting portion (25) and a reflection portion (26), the mounting portion (25) is fixedly connected with the mounting column (22), and the inner side of the reflection portion (26) is fixedly connected with the sound absorption block (27).
6. The exhaust device with the noise reduction function according to claim 1, wherein an outer sleeve (6) is fixedly arranged on the inner wall of the outer cylinder (1), and the outer sleeve (6) is provided with a reflection hole.
7. The exhaust device with the silencing function according to claim 1, wherein the silencing ball (18) is made of a ceramic material, and the silencing passage is formed on the silencing ball (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111577739.5A CN113958386B (en) | 2021-12-22 | 2021-12-22 | Exhaust device with silencing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111577739.5A CN113958386B (en) | 2021-12-22 | 2021-12-22 | Exhaust device with silencing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113958386A CN113958386A (en) | 2022-01-21 |
| CN113958386B true CN113958386B (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111577739.5A Active CN113958386B (en) | 2021-12-22 | 2021-12-22 | Exhaust device with silencing function |
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| CN113958386A (en) | 2022-01-21 |
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