CN204716338U - Medium and low frequency mobile muffler - Google Patents
Medium and low frequency mobile muffler Download PDFInfo
- Publication number
- CN204716338U CN204716338U CN201520211586.6U CN201520211586U CN204716338U CN 204716338 U CN204716338 U CN 204716338U CN 201520211586 U CN201520211586 U CN 201520211586U CN 204716338 U CN204716338 U CN 204716338U
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- Prior art keywords
- chamber
- suction tude
- outlet pipe
- housing
- low frequency
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Abstract
The utility model discloses a kind of medium and low frequency mobile muffler, comprise housing, the first dividing plate, second partition, suction tude and steam outlet pipe, housing comprises suction port and air outlet, housing is separated into the first chamber, the second chamber and the 3rd chamber along suction port to direction, air outlet by the first dividing plate and second partition, the two ends of housing are provided with end cap, the two ends of suction tude are connected with the housing of suction port and the first dividing plate respectively, and the two ends of steam outlet pipe are connected with the end cap of air outlet and second partition respectively; The sidewall of suction tude offers leakage hole, and gas leakage mouth is also provided with cage walls outward; The sidewall of steam outlet pipe circumference offers some air holes, in the 3rd chamber, is also filled with quieter material.The setting of leakage hole and cage walls, makes the first chamber produce vibration, carrys out the noise in cancellation vehicle exhaust by resonance, in the 3rd chamber, be filled with quieter material simultaneously, steam outlet pipe offers air hole, makes a part of tail gas can noise reduction in the 3rd chamber, make overall erasure effect better.
Description
Technical field
The utility model relates to a kind of technical field of automobile, and more particularly, it relates to a kind of medium and low frequency mobile muffler.
Background technique
Baffler is a kind of device stoping sound transmission and allow air-flow to pass through, and is the important measures eliminating air power noise.The device of the reduction noise on the air-flow path being mainly arranged on air powered equipment or in inlet and exhaust system.Along with the progress of science and technology, automobile obtains and applies more and more widely in people's life, people are when selecting automobile, when the comfort level taken and driving, good experience sense has become topmost selection, mobile muffler, effectively can reduce the noise that motor car engine brings and the vibration sense produced vehicle body, therefore, good baffler is the important auto parts machinery of experience sense of well driving to people's filled band.
At present, application number is that the Chinese patent of 201420502573.X discloses " a kind of vent systems silencing pot and automobile ", vent systems silencing pot comprises, housing, first dividing plate, second partition, suction tude, outlet pipe and hush tube, the inner space of housing is divided into the first resonant cavity along air current flow direction by the first dividing plate and second partition, second resonant cavity and the 3rd resonant cavity, the first paragraph of suction tude is positioned at the first resonant cavity, the second segment of suction tude is positioned at the second resonant cavity, the second segment of suction tude is provided with air hole, the first paragraph of outlet pipe is positioned at the 3rd resonant cavity, the second segment of outlet pipe is positioned at the second resonant cavity, steam outlet pipe is provided with air hole, the first paragraph of hush tube is positioned at the first resonant cavity, and the second segment of hush tube is positioned at the second resonant cavity.But this mechanism, tail gas directly enters in resonant cavity by the air hole on suction tude first paragraph and second segment, resonance is produced by the effect between tail gas and the housing of resonant cavity, this resonance effect is not obvious, the erasure effect that not only resonates is poor, and the 3rd the erasure effect of baffler in resonant cavity not obvious, overall erasure effect is bad.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is the medium and low frequency mobile muffler providing a kind of centering low frequency noise good muffling effect.
For achieving the above object, the utility model provides following technological scheme: a kind of medium and low frequency mobile muffler, comprise housing, the first dividing plate, second partition, suction tude and steam outlet pipe, housing comprises suction port and air outlet, housing is separated into the first chamber, the second chamber and the 3rd chamber along suction port to direction, air outlet by the first dividing plate and second partition, the two ends of housing are provided with end cap, the two ends of suction tude are connected with the housing of suction port and the first dividing plate respectively, and the two ends of steam outlet pipe are connected with the end cap of air outlet and second partition respectively; The sidewall of suction tude offers leakage hole, and gas leakage mouth is also provided with cage walls outward; The sidewall of steam outlet pipe circumference offers some air holes, in the 3rd chamber, is also filled with quieter material.
Preferably, cage walls is arranged along suction tude axial direction, and a bit forms sealed end with suction tude near suction port, and the other end is the opening end with the first chamber conducting.
Preferably, the suction tude in cage walls offers two leakage holes, the leakage hole of two is separately positioned on opening end and the sealed end of cage walls.
Preferably, cage walls is provided with two, and is symmetricly set on the circumferential side wall of suction tude.
Preferably, cage walls is arranged in one is long and the other is short.
Preferably, the pipeline of suction tude and steam outlet pipe is located along the same line.
Preferably, air hole gathers on steam outlet pipe, and quieter material is acoustical cotton.
Compared with prior art, by offering leakage hole on the tube wall of suction tude, and be outside equipped with cage walls at air hole, after tail gas spills in leakage hole, by tail gas is compressed in cage walls, and the position of leakage hole in adjustment cage walls, change the vibration frequency in cage walls and the first chamber, the noise of low and medium frequency in cancellation vehicle exhaust is carried out by resonance, be filled with on quieter material and steam outlet pipe in the 3rd chamber simultaneously and offer air hole, make a part of tail gas can reach noise reduction in the 3rd chamber, make overall erasure effect better.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model medium and low frequency mobile muffler embodiment;
Fig. 2 is the cross section view of A-A in Fig. 1;
Fig. 3 is the partial enlarged drawing in B portion in Fig. 1.
Reference character: 1, housing; 2, the first dividing plate; 3, second partition; 4, suction tude; 5, steam outlet pipe; 6, end cap; 7, cage walls; 8, leakage hole; 9, air hole; 10, silencing cotton; 11, suction port; 12, air outlet.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model medium and low frequency mobile muffler embodiment is described further.
A kind of medium and low frequency mobile muffler, comprise housing 1, first dividing plate 2, second partition 3, suction tude 4 and steam outlet pipe 5, housing 1 comprises suction port 11 and air outlet 12, housing 1 is separated into the first chamber, the second chamber and the 3rd chamber along suction port 11 to direction, air outlet 12 by the first dividing plate 2 and second partition 3, simultaneously, first dividing plate 2, to be tightly connected between second partition 3 and housing 1, suction tude 4 and steam outlet pipe 5 are each passed through the first dividing plate 2 and arrange with second partition 3, make suction tude 4 and steam outlet pipe 5 by the second chamber, form air-flow conducting.The two ends of housing 1 are provided with end cap 6, and the two ends of suction tude 4 are connected with the housing 1 of suction port 11 and the first dividing plate 2 respectively, and the two ends of steam outlet pipe 5 are connected with the end cap 6 of air outlet 12 and second partition 3 respectively; Vehicle exhaust enters after in baffler from suction tude 4, through suction tude 4, is delivered in the second chamber, then by being connected to the steam outlet pipe 5 on second partition 3, in steam outlet pipe 5 behind the 3rd chamber, will discharge.Meanwhile, the pipeline of suction tude 4 and steam outlet pipe 5 is located along the same line, and flows into after in the second chamber from suction tude 4 at tail gas, more easily through the second chamber, circulates in the 3rd chamber, carries out sound-deadening and noise-reducing to gas.
Further, the sidewall of suction tude 4 offers leakage hole 8, gas leakage mouth is also provided with cage walls 7 outward, preferably, cage walls 7 is arranged along suction tude 4 axial direction, and forms sealed end near suction port 11 1 and suction tude 4, and the other end is the opening end with the first chamber conducting.By offering leakage hole 8 on the tube wall of suction tude 4, and be outside equipped with cage walls 7 at air hole 9, after tail gas spills in leakage hole 8, because cage walls 7 one end is sealed end, the other end is opening end, and tail gas is after entering cage walls 7, can only flow out from opening end, in cage walls 7 in flow process, tail gas can be made to compress in cage walls 7, the medium and low frequency noise in cancellation tail gas.Make due to the sudden change of acoustic impedance sound wave that reflection and interference phenomenon occur, cause sound energy attenuation; When system natural frequency and frequency of sound wave occur to resonate, the acoustic energy of consumption is maximum, and disappearance amount is maximum.
Further, suction tude 4 in cage walls 7 offers two leakage holes 8, the leakage hole 8 of two is separately positioned on opening end and the sealed end of cage walls 7, by regulating the distance between two leakage holes 8, the tail gas in cage walls 7 can be made when being entered in cage walls 7 by leakage hole 8, produce different vibrating effects, thus realize the effect noise of the different frequency that different automobile types produces being played to sound-deadening and noise-reducing.Simultaneously, cage walls 7 is provided with two, and be symmetricly set on the circumferential side wall of suction tude 4, two cage walls 7 are arranged in one is long and the other is short, by changing the length of two cage walls 7, can make two cage walls 7 that suction tude 4, housing 1 can be made to produce resonance, effectively eliminating medium and low frequency noise in tail gas, and by the adjustment to different length, adapt to the noise that the frequency of motor generation in different automobile types is different.
The sidewall of steam outlet pipe 5 circumference offers some air holes 9, and air hole 9 gathers on steam outlet pipe 5, be also filled with quieter material in the 3rd chamber, preferably, quieter material is acoustical cotton, makes the 3rd chamber carry out damping noise reduction to tail gas.In the 3rd chamber, be filled with silencing cotton 10, and steam outlet pipe 5 offers air hole 9, gas entering after in the 3rd chamber in steam outlet pipe 5, and by silencing cotton 10, effectively by the noise absorption in tail gas, next is carried out further sound-deadening and noise-reducing to tail gas.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. a medium and low frequency mobile muffler, comprise housing, the first dividing plate, second partition, suction tude and steam outlet pipe, described housing comprises suction port and air outlet, it is characterized in that: housing is separated into the first chamber, the second chamber and the 3rd chamber along suction port to direction, air outlet by the first dividing plate and second partition, the two ends of described housing are provided with end cap, the two ends of described suction tude are connected with the housing of suction port and the first dividing plate respectively, and the two ends of described steam outlet pipe are connected with the end cap of air outlet and second partition respectively; The sidewall of described suction tude offers leakage hole, and described gas leakage mouth is also provided with cage walls outward; The sidewall of described steam outlet pipe circumference offers some air holes, in described 3rd chamber, is also filled with quieter material.
2. medium and low frequency mobile muffler according to claim 1, is characterized in that: described cage walls is arranged along suction tude axial direction, and a bit forms sealed end with suction tude near suction port, and the other end is the opening end with the first chamber conducting.
3. medium and low frequency mobile muffler according to claim 2, is characterized in that: the suction tude in described cage walls offers two leakage holes, and the leakage hole described in two is separately positioned on opening end and the sealed end of cage walls.
4. medium and low frequency mobile muffler according to claim 3, is characterized in that: described cage walls is provided with two, and is symmetricly set on the circumferential side wall of suction tude.
5. medium and low frequency mobile muffler according to claim 4, is characterized in that: described cage walls is arranged in one is long and the other is short.
6. medium and low frequency mobile muffler as claimed in any of claims 1 to 5, is characterized in that: the pipeline of described suction tude and steam outlet pipe is located along the same line.
7. medium and low frequency mobile muffler according to claim 6, is characterized in that: described air hole gathers on steam outlet pipe, described quieter material is acoustical cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520211586.6U CN204716338U (en) | 2015-04-09 | 2015-04-09 | Medium and low frequency mobile muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520211586.6U CN204716338U (en) | 2015-04-09 | 2015-04-09 | Medium and low frequency mobile muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716338U true CN204716338U (en) | 2015-10-21 |
Family
ID=54315341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520211586.6U Expired - Fee Related CN204716338U (en) | 2015-04-09 | 2015-04-09 | Medium and low frequency mobile muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825331A (en) * | 2018-09-19 | 2018-11-16 | 上海天纳克排气***有限公司 | Muffler |
-
2015
- 2015-04-09 CN CN201520211586.6U patent/CN204716338U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825331A (en) * | 2018-09-19 | 2018-11-16 | 上海天纳克排气***有限公司 | Muffler |
| CN108825331B (en) * | 2018-09-19 | 2023-09-15 | 上海天纳克排气***有限公司 | Silencer (muffler) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20170409 |