CN216008641U - Silencer structure with good internal airflow fluidity - Google Patents
Silencer structure with good internal airflow fluidity Download PDFInfo
- Publication number
- CN216008641U CN216008641U CN202121762020.4U CN202121762020U CN216008641U CN 216008641 U CN216008641 U CN 216008641U CN 202121762020 U CN202121762020 U CN 202121762020U CN 216008641 U CN216008641 U CN 216008641U
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- CN
- China
- Prior art keywords
- partition plate
- cavity
- silencer
- chamber
- baffle
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- 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.)
- Expired - Fee Related
Links
- 230000003584 silencer Effects 0.000 title claims abstract description 29
- 238000005192 partition Methods 0.000 claims abstract description 49
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 230000030279 gene silencing Effects 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000001743 silencing effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses a silencer structure with good internal airflow fluidity, which comprises a silencer shell, wherein the silencer shell comprises a first partition plate, a second partition plate and a third partition plate, the silencer shell is divided into a first cavity, a second cavity, a third cavity and a fourth cavity by the first partition plate, the second partition plate and the third partition plate, and the silencer shell also comprises a perforated air inlet pipe, a perforated air outlet pipe, a connecting pipe, a reinforcing pipe and an air valve on the connecting pipe. The utility model has the beneficial effects that: the silencer has obvious silencing effect at low, medium and high frequencies, unobstructed internal airflow, simple integral structure and easy installation.
Description
Technical Field
The utility model relates to a silencer structure with good internal airflow fluidity, 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 the silencer structure with good internal airflow fluidity, so that low, medium and high frequency silencing is realized, the silencing effect is improved, and the smooth operation of the internal airflow can be ensured.
In order to achieve the purpose, the technical scheme of the utility model is as follows: the silencer comprises a silencer shell, wherein the silencer shell comprises a first partition plate, a second partition plate and a third partition plate, and the first partition plate, the second partition plate and the third partition plate divide the silencer shell into a first cavity, a second cavity, a third cavity and a fourth cavity;
a first cavity penetrates through the first partition plate, the second partition plate and the third partition plate in sequence, the first partition plate is connected to a fourth cavity, a perforated air inlet pipe is arranged, perforations of the perforated air inlet pipe are located in the first cavity and the third cavity, a lengthening pipe is sleeved at the tail end of the perforated air inlet pipe, and the diameter of the lengthening pipe is smaller than that of the perforated air inlet pipe;
the fourth cavity penetrates through the third partition plate, the second partition plate and the first partition plate in sequence, the first partition plate is connected to the first cavity and provided with a connecting pipe, an air valve capable of limiting air flow to flow is arranged at the outlet end of the connecting pipe, the first cavity penetrates through the first partition plate, the second partition plate, the third partition plate and the silencer shell in sequence and is provided with a plurality of perforated air outlet pipes, and the perforated air outlet pipes are perforated and located in the second cavity and the third cavity.
Furthermore, a reinforcing frame is vertically arranged in the fourth cavity and is attached to the silencer shell.
Furthermore, the second chamber and the third chamber are provided with silencing cotton as filling cavities, and the first chamber and the fourth chamber are expansion cavities.
Furthermore, the first partition plate, the second partition plate and the third partition plate are provided with a plurality of partition plate holes.
Furthermore, the diameter of the perforated air inlet pipe is larger than that of the connecting pipe, and the sum of the sectional areas of the two perforated air outlet pipes is not smaller than that of the perforated air inlet pipe.
Further, the air valve comprises a cover plate, and the cover plate is connected with the outlet end of the connecting pipe through an elastic piece.
The utility model has the beneficial effects that: the silencer has obvious silencing effect at low, medium and high frequencies, unobstructed internal airflow, simple integral structure and easy installation.
Drawings
FIG. 1 is a schematic view of the present invention.
FIG. 2 is a schematic view of a first separator plate according to the present invention.
FIG. 3 is a schematic view of a reinforcement frame 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.
As shown in fig. 1-3, a muffler structure with good internal airflow fluidity includes a muffler shell 1, the muffler shell 1 includes a first partition board 2, a second partition board 3, and a third partition board 4, the muffler shell 1 is divided into a first chamber 5, a second chamber 6, a third chamber 7, and a fourth chamber 8 by the first partition board 2, the second partition board 3, and the third partition board 4;
a first cavity 5 sequentially penetrates through a first partition plate 2, a second partition plate 3 and a third partition plate 4 to be connected to a fourth cavity 8, a perforated air inlet pipe 9 is arranged, perforations of the perforated air inlet pipe 9 are located in the first cavity 5 and the third cavity 7, an elongated pipe 10 is sleeved at the tail end of the perforated air inlet pipe 9, the diameter of the elongated pipe 10 is smaller than that of the perforated air inlet pipe 9, the expansion ratio is increased, the sound energy is consumed, the low-frequency noise is reduced, and the idle noise is further reduced;
run through third baffle 4 in proper order by fourth cavity 8, second baffle 3, first baffle 2 is connected to first cavity 5 and is provided with connecting pipe 11, the exit end of connecting pipe 11 is provided with the air valve 12 that can restrict the air current and flow, air current directly passes each baffle when the air current undersize, blow open air valve 12 when the air current is too big, this air valve 12 plays the effect of current-limiting to the air current through connecting pipe 11, play the effect of atmospheric current buffering, run through first baffle 2 by first cavity 5 in proper order, second baffle 3, third baffle 4 and silencer casing 1 are provided with several perforation outlet duct 13, perforation outlet duct 13 perforates and is located second cavity 6 and third cavity 7.
In this embodiment, the exhaust gas enters the fourth chamber 8 through the perforated gas inlet pipe 9, then enters the first chamber 5 through the connecting pipe 11, and finally is discharged out of the muffler shell 1 through the two perforated gas outlet pipes 9 to complete the muffling function.
A reinforcing frame 14 is vertically arranged in the fourth cavity 8, and the reinforcing frame 14 is attached to the silencer shell 1 and supports the fourth cavity 8.
The second chamber 6 and the third chamber 7 are provided with silencing cotton as filling chambers, the first chamber 5 and the fourth chamber 8 are expansion chambers, the expansion chamber structure is adopted to reduce middle and low frequency noise, and the silencing cotton is filled to reduce middle and high frequency noise and airflow friction noise.
The diameter of the perforated air inlet pipe 9 is larger than that of the connecting pipe 11, so that air flow entering the first chamber 5 can be buffered, and the sum of the sectional areas of the two perforated air outlet pipes 13 is not smaller than that of the perforated air inlet pipe 9, so that the air flow can be smoothly discharged.
The air valve 12 comprises a cover plate which is connected to the outlet end of the connecting tube 11 by an elastic member, and the cover plate is normally attached to the outlet and is blown open when the air flow comes.
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 (6)
1. The utility model provides a silencer structure that inside air current mobility is good which characterized in that: the silencer comprises a silencer shell (1), wherein the silencer shell (1) comprises a first partition plate (2), a second partition plate (3) and a third partition plate (4), and the silencer shell (1) is divided into a first cavity (5), a second cavity (6), a third cavity (7) and a fourth cavity (8) by the first partition plate (2), the second partition plate (3) and the third partition plate (4);
a perforated air inlet pipe (9) is connected to the fourth chamber (8) through the first chamber (5) sequentially penetrating through the first partition plate (2), the second partition plate (3) and the third partition plate (4), perforations of the perforated air inlet pipe (9) are located in the first chamber (5) and the third chamber (7), an extension pipe (10) is sleeved at the tail end of the perforated air inlet pipe (9), and the diameter of the extension pipe (10) is smaller than that of the perforated air inlet pipe (9);
by fourth cavity (8) run through in proper order third baffle (4), second baffle (3), first baffle (2) are connected to first cavity (5) are provided with connecting pipe (11), the exit end of connecting pipe (11) is provided with can restrict the air valve (12) that the air current flows, by first cavity (5) run through in proper order first baffle (2), second baffle (3), third baffle (4) and silencer casing (1) is provided with several perforation outlet duct (13), perforation outlet duct (13) are perforated and are located second cavity (6) with in third cavity (7).
2. The muffler structure of claim 1, wherein: a reinforcing frame (14) is vertically arranged in the fourth cavity (8), and the reinforcing frame (14) is attached to the silencer shell (1).
3. The muffler structure of claim 1, wherein: the second chamber (6) and the third chamber (7) are filled with silencing cotton, and the first chamber (5) and the fourth chamber (8) are expanded chambers.
4. The muffler structure of claim 1, wherein: the first partition plate (2), the second partition plate (3) and the third partition plate (4) are all provided with a plurality of partition plate holes (15).
5. The muffler structure of claim 1, wherein: the diameter of the perforated air inlet pipe (9) is larger than that of the connecting pipe (11), and the sum of the sectional areas of the two perforated air outlet pipes (13) is not smaller than that of the perforated air inlet pipe (9).
6. The muffler structure of claim 1, wherein: the air valve (12) comprises a cover plate, and the cover plate is connected with the outlet end of the connecting pipe (11) through an elastic piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762020.4U CN216008641U (en) | 2021-07-30 | 2021-07-30 | Silencer structure with good internal airflow fluidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762020.4U CN216008641U (en) | 2021-07-30 | 2021-07-30 | Silencer structure with good internal airflow fluidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216008641U true CN216008641U (en) | 2022-03-11 |
Family
ID=80589667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121762020.4U Expired - Fee Related CN216008641U (en) | 2021-07-30 | 2021-07-30 | Silencer structure with good internal airflow fluidity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216008641U (en) |
-
2021
- 2021-07-30 CN CN202121762020.4U patent/CN216008641U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220311 |