CN207795345U - Muffler ASSY - Google Patents
Muffler ASSY Download PDFInfo
- Publication number
- CN207795345U CN207795345U CN201721916298.6U CN201721916298U CN207795345U CN 207795345 U CN207795345 U CN 207795345U CN 201721916298 U CN201721916298 U CN 201721916298U CN 207795345 U CN207795345 U CN 207795345U
- Authority
- CN
- China
- Prior art keywords
- rear end
- silencer
- partition
- end silencer
- sound
- 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.)
- Expired - Fee Related
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses a kind of muffler ASSYs, including exhaust pipe, front end silencer and rear end silencer group, the rear end silencer group includes at least two rear end silencers, the exhaust pipe is connected to front end silencer, front end silencer tail portion is connected respectively to each rear end silencer in the silencer group of rear end by by-pass tube, the length of each rear end silencer is different, tubular beam is equipped on the outside of each rear end silencer, the beam on each rear end silencer connects into an entirety；Further include the journal stirrup being arranged for installing the muffler ASSY, the journal stirrup is disposed therein on a rear end silencer and is connect with the beam.The utility model can weaken the vibrations of silencer, effectively reduce the noise of a variety of different frequencies, also broader noise absorbent frequency.
Description
Technical field
The utility model belongs to silencer technical field, and in particular to a kind of muffler ASSY.
Background technology
Silencer is to allow air-flow to pass through, but can prevent or reduce a kind of device of sound transmission, is to eliminate air to move
The important measures of power noise.Silencer can stop the propagation of sound wave, and air-flow is allowed to pass through, and be the effective work for controlling noise
Tool.
The silencer of traditional motor vehicles usually only considered the noise of air-flow in exhaust pipe, disappear without considering
Except noise caused by the vibrations of silencer itself；And be mostly the noise for considering to eliminate particular frequency range, it can not will be a wide range of
The noise of multi-frequency is eliminated well, narrow scope of application.
Utility model content
For the deficiency in the presence of the prior art, the utility model provide a kind of vibrations that can weaken silencer,
The muffler ASSY that the noise of a variety of different frequencies can effectively be weakened, have broader noise absorbent frequency.
Muffler ASSY, including exhaust pipe, front end silencer and rear end silencer group, the rear end silencer group include extremely
Few two rear end silencers, the exhaust pipe are connected to front end silencer, and front end silencer tail portion is distinguished by by-pass tube
The length of each rear end silencer being connected in the silencer group of rear end, each rear end silencer is different, it is described it is each after
It holds and is equipped with tubular beam on the outside of silencer, the beam on each rear end silencer connects into an entirety；Further include setting
Set the journal stirrup for installing the muffler ASSY, the journal stirrup be disposed therein on a rear end silencer and with the damping
Pad connection.
Further, rear end housing is coated on the outside of the rear end silencer, the rear end silencer includes being arranged in cylinder
Protecgulum, rear cover and the first partition being arranged between the protecgulum and rear cover of internal side, the rear end silencer and branch
Pipe is connected by connecting tube, and described connecting tube one end is connected to branch inside pipe wall, and the other end is connected on the protecgulum and stretches into
The rear end silencer；Rear end silencer is divided into towards the preceding expansion cavity of protecgulum side and towards rear cover by the first partition
The rear expansion cavity of side, the first partition are equipped at least two along the equally distributed through-hole of first partition circumferencial direction, institute
The first partition snorkel that through-hole is equipped with connection preceding expansion cavity and rear expansion cavity is stated, is covered after described equipped with expansion cavity after connection
With the rear cover snorkel outside the silencer of rear end.
Further, further, the connecting tube stretches into the end of rear end silencer and is blocked by blanking cover, in the connection
Pipe side wall is along the circumferential direction equipped with multiple ventilation holes close to the position of blanking cover.
Further, it is additionally provided with second partition between first partition and the blanking cover, is equipped in the middle part of the second partition
Across the second partition snorkel of the second partition, the second partition is towards the side of connecting tube and the rear end silencer
Sound-absorbing material is equipped between inner wall.
Further, the sound-absorbing material is glass fibre or sponge plastics.
Further, the front end silencer includes upper shell and lower housing and is disappeared by what upper shell and lower housing surrounded
The operatic tunes, the upper shell are equipped with upper web plate, and sound-absorbing material is filled between the upper shell and upper web plate；On the lower housing
Equipped with lower web plate, sound-absorbing material is filled between the lower housing and lower web plate；Tubular sound absorption knot is additionally provided in the noise elimination cavity
Structure, the tubular sound absorption structure include outer net cylinder and interior net cylinder, filling sucting sound material between outer net cylinder and interior net cylinder；The outer net
The section thickness of sound-absorbing material between cylinder and interior net cylinder gradually increases along air current flow direction.
Further, the cross sectional shape of the outer net cylinder is round or regular polygon, the shape in the interior net cylinder section with
Outer net cylinder cross sectional shape is similar.
Further, the sound-absorbing material is glass fibre or sponge plastics.
Compared with the prior art, the utility model has the advantages that：
1, the utility model connects into an entirety by using multiple parallel silencers by beam, can effectively weaken
The vibration of silencer, achievees the effect that noise elimination noise reduction；
2, the utility model coordinates aperture and sound absorption material by the path by adjusting air-flow using multistage expansion cavity
Material, can effectively weaken the noise of a variety of different frequencies, reach better noise elimination effect；
3, the utility model between the sound absorption structure of shell surrounding by being arranged sound-absorbing material thickness gradually increased cylinder
Shape sound absorption structure can have broader absorption frequency, the whole acoustic attenuation performance of silencer to have compared with common uniform thickness sound-absorbing material
It significantly improves.
Description of the drawings
Fig. 1 is the utility model general structure schematic diagram；
Fig. 2 is the utility model rear end acoustic wave filter structure schematic diagram；
Fig. 3 is the utility model front end acoustic wave filter structure schematic diagram.
Wherein, 1 exhaust pipe, 2 front end silencers, 21 upper shells, 22 lower housings, 24 upper web plates, 26 times web plates, 27 outer nets
Cylinder, net cylinder in 28,3 rear end silencers, end housing after 30,31 cylinders, 32 protecgulums, 33 rear covers, 34 first partitions, 35 connecting tubes,
Expansion cavity before 36, expansion cavity after 37,38 first partition snorkels, 39 rear cover snorkels, 310 blanking covers, 311 ventilation holes, 312
Two partition boards, 313 second partition snorkels, 4 by-pass tubes, 5 beams, 6 journal stirrups, 7 sound-absorbing materials.
Specific implementation mode
In order to which the technical means, creative features, achievable purpose and effectiveness for making utility model realize are easy to understand, below
In conjunction with being specifically illustrating, the utility model is expanded on further.
Embodiment 1：
A kind of muffler ASSY, as shown in Figure 1, including exhaust pipe 1, front end silencer 2 and rear end silencer group, after described
It includes at least two rear end silencers 3 to hold silencer group, and the exhaust pipe 1 is connected to front end silencer 2, the front end silencer
2 tail portions are connected respectively to each rear end silencer 3 in the silencer group of rear end by by-pass tube 4, each rear end silencer 3
Length is different, and 3 outside of each rear end silencer is equipped with tubular beam 5, the beam on each rear end silencer 3
5 connect into an entirety；Further include the journal stirrup 6 being arranged for installing the muffler ASSY, the journal stirrup 6 is disposed therein one
It is connect on a rear end silencer 3 and with the beam 5.
The length of each rear end silencer is different, and resonant frequency is also different, is set on the outside of each silencer in the present embodiment
It sets beam and is connected the parallel rear end silencer of multiple and different length using beam, pass through multiple and different noise eliminations
The vibration of device offsets each other to realize silencer damping and prevent suppressor case from resonating, to achieve the effect that noise elimination noise reduction.
Embodiment 2：
In embodiment 1 on the basis of technical solution, as shown in Fig. 2, 3 outside of the rear end silencer is coated with rear end housing
Body 30, the rear end silencer 3 include that the protecgulum 32 in 31 inside of cylinder, rear cover 33 is arranged and is arranged in 32 and of the protecgulum
First partition 34 between rear cover 33, the rear end silencer 3 are connect with by-pass tube 4 by connecting tube 35, the connecting tube 35
One end is connected to 4 inner wall of by-pass tube, and the other end is connected on the protecgulum 32 and stretches into the rear end silencer 3；Described first
Partition board 34 divides rear end silencer 3 for the rear expansion cavity towards the preceding expansion cavity 36 of 32 side of protecgulum and towards 33 side of rear cover
37, the first partition 34 is equipped at least two along the equally distributed through-hole of 34 circumferencial direction of first partition, the through-hole
First partition snorkel 38 equipped with connection preceding expansion cavity 36 and rear expansion cavity 37, the rear cover 33 are equipped with expansion cavity after connection
37 and rear end silencer outside rear cover snorkel 39.
The reflection and interference of acoustic energy can be preferably caused by multistage expansion cavity and multiple snorkels in this way, reduces and eliminates the noise
Device achievees the effect that noise reduction to the acoustic energy of external radiation.
As a further optimization of the scheme , the end that the connecting tube 35 stretches into rear end silencer 3 is blocked by blanking cover 310,
In 35 side wall of the connecting tube multiple ventilation holes 311 are along the circumferential direction uniformly provided with close to the position of blanking cover 310.The ventilation
The diameter of aperture 311 is between 1mm~2mm.
Noise elimination effect can be further strengthened by the method for micropore jet in this way.
As a further optimization of the scheme , second partition 312 is additionally provided between first partition 34 and the blanking cover 310,
312 middle part of the second partition is equipped with the second partition snorkel 313 across the second partition 312, the second partition 312
Towards between the side of connecting tube 35 and 3 inner wall of rear end silencer be equipped with sound-absorbing material 7.Particularly, the sound-absorbing material 7
Glass fibre or sponge plastics can be used.
This programme coordinates micropore jet and multistage expansion cavity by adjusting the path of air-flow using sound-absorbing material, can
The noise for effectively weakening a variety of different frequencies reaches better noise elimination effect.
Embodiment 3：
In Examples 1 to 2 on the basis of any scheme, as shown in figure 3, the front end silencer 2 includes upper shell
21 and lower housing 22 and the noise elimination cavity that is surrounded by upper shell 21 and lower housing 22, the upper shell 21 be equipped with upper web plate 24,
Sound-absorbing material 7 is filled between the upper shell 21 and upper web plate 24；The lower housing 22 is equipped with lower web plate 26, the lower casing
Sound-absorbing material 7 is filled between body 22 and lower web plate 26；In the noise elimination cavity cylinder is additionally provided with (i.e. between upper shell and lower housing)
Shape sound absorption structure, the tubular sound absorption structure include outer net cylinder 27 and interior net cylinder 28, are filled between outer net cylinder 27 and interior net cylinder 28
Sound-absorbing material 7.The section thickness of sound-absorbing material 7 between the outer net cylinder 27 and interior net cylinder 28 gradually increases along air current flow direction
Greatly.
For sound-absorbing porous material, with the increase of material thickness, sound absorption frequency is gradually moved to low frequency.This reality
It applies to use in example and sound-absorbing material thickness gradually increased tubular sound absorption structure is set between the sound absorption structure of shell surrounding, compared with
Common uniform thickness sound-absorbing material can have broader absorption frequency, the whole acoustic attenuation performance of silencer to be significantly improved.
Particularly, the cross sectional shape of the outer net cylinder 27 can be round or regular polygon (such as square or positive six side
Shape), the shape in 28 section of interior net cylinder is similar to outer net cylinder cross sectional shape.
Particularly, glass fibre or sponge plastics can be used in the sound-absorbing material 7.
Above description is merely a prefered embodiment of the utility model, on the scope of protection of the utility model is not limited in
Embodiment is stated, every technical solution for belonging to the utility model principle belongs to the scope of protection of the utility model.For this
For the technical staff in field, several improvement carried out under the premise of not departing from the principles of the present invention, these improvement
It should be regarded as the scope of protection of the utility model.
Claims (8)
1. muffler ASSY, it is characterised in that：
Including exhaust pipe, front end silencer and rear end silencer group, the rear end silencer group is eliminated the noise including at least two rear ends
Device, the exhaust pipe are connected to front end silencer, and front end silencer tail portion is connected respectively to rear end by by-pass tube and eliminates the noise
The length of each rear end silencer in device group, each rear end silencer is different, is set on the outside of each rear end silencer
There are tubular beam, the beam on each rear end silencer to connect into an entirety；Further include that setting is described for installing
The journal stirrup of muffler ASSY, the journal stirrup are disposed therein on a rear end silencer and are connect with the beam.
2. muffler ASSY according to claim 1, it is characterised in that：
Be coated with rear end housing on the outside of the rear end silencer, the rear end silencer include the protecgulum being arranged on the inside of cylinder,
Rear cover and the first partition being arranged between the protecgulum and rear cover, the rear end silencer are connected with by-pass tube by connecting tube
It connects, described connecting tube one end is connected to branch inside pipe wall, and the other end is connected on the protecgulum and stretches into the rear end silencer；
Rear end silencer is divided into the preceding expansion cavity towards protecgulum side and the rear expansion cavity towards rear cover side by the first partition,
The first partition is equipped at least two along the equally distributed through-hole of first partition circumferencial direction, and the through-hole is equipped with connection
The first partition snorkel of preceding expansion cavity and rear expansion cavity is covered after described equipped with outside expansion cavity after connection and rear end silencer
Rear cover snorkel.
3. muffler ASSY according to claim 2, it is characterised in that：
Further, the connecting tube stretches into the end of rear end silencer and is blocked by blanking cover, in the connecting tube side wall close to stifled
The position of lid is along the circumferential direction equipped with multiple ventilation holes.
4. muffler ASSY according to claim 3, it is characterised in that：
Be additionally provided with second partition between first partition and the blanking cover, be equipped in the middle part of the second partition across described second every
The second partition snorkel of plate, the second partition towards between the side of connecting tube and the rear end silencer internal wall be equipped with inhale
Sound material.
5. muffler ASSY according to claim 4, it is characterised in that：
The sound-absorbing material is glass fibre or sponge plastics.
6. muffler ASSY according to claim 1, it is characterised in that：
The front end silencer includes upper shell and lower housing and the noise elimination cavity that is surrounded by upper shell and lower housing, the upper casing
Body is equipped with upper web plate, and sound-absorbing material is filled between the upper shell and upper web plate；The lower housing is equipped with lower web plate, institute
It states and is filled with sound-absorbing material between lower housing and lower web plate；Tubular sound absorption structure is additionally provided in the noise elimination cavity, the tubular is inhaled
Acoustic form includes outer net cylinder and interior net cylinder, filling sucting sound material between outer net cylinder and interior net cylinder；The outer net cylinder and interior net cylinder it
Between the section thickness of sound-absorbing material gradually increase along air current flow direction.
7. muffler ASSY according to claim 6, it is characterised in that：
The cross sectional shape of the outer net cylinder is round or regular polygon, shape and the outer net cylinder cross sectional shape in the interior net cylinder section
It is similar.
8. muffler ASSY according to claim 6, it is characterised in that：
The sound-absorbing material is glass fibre or sponge plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721916298.6U CN207795345U (en) | 2017-12-31 | 2017-12-31 | Muffler ASSY |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721916298.6U CN207795345U (en) | 2017-12-31 | 2017-12-31 | Muffler ASSY |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207795345U true CN207795345U (en) | 2018-08-31 |
Family
ID=63278042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721916298.6U Expired - Fee Related CN207795345U (en) | 2017-12-31 | 2017-12-31 | Muffler ASSY |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207795345U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005756A (en) * | 2017-12-31 | 2018-05-08 | 重庆固发机械制造有限责任公司 | A kind of muffler ASSY |
-
2017
- 2017-12-31 CN CN201721916298.6U patent/CN207795345U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005756A (en) * | 2017-12-31 | 2018-05-08 | 重庆固发机械制造有限责任公司 | A kind of muffler ASSY |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20181231 |