CN206054062U - A kind of automobile exhaust muffler - Google Patents
A kind of automobile exhaust muffler Download PDFInfo
- Publication number
- CN206054062U CN206054062U CN201621024962.1U CN201621024962U CN206054062U CN 206054062 U CN206054062 U CN 206054062U CN 201621024962 U CN201621024962 U CN 201621024962U CN 206054062 U CN206054062 U CN 206054062U
- Authority
- CN
- China
- Prior art keywords
- inlet tube
- punching pipe
- automobile exhaust
- exhaust muffler
- silencing cavity
- 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 automobile exhaust muffler, solve the problems, such as that the noise dampening efficiency of acoustic filter on market is on the weak side, its drip irrigation device is a kind of automobile exhaust muffler, including inlet tube, silencing cavity and exhaustor, the anterior of the silencing cavity arranges front punching pipe, one end of punching pipe before the inlet tube connection, one end of the central canal of the other end connection inverted V-shaped of the front punching pipe, the other end of the central canal is symmetrical arranged rear punching pipe, inverted V-shaped baffle plate is provided with the central canal, the other end of the rear punching pipe is located in the tail end of silencing cavity, the exhaustor is arranged at the tail end face of silencing cavity, the port of the rear punching pipe is placed in exhaustor, the tube wall of the front punching pipe and rear punching pipe is provided with sound attenuation hole, the noise reduction intracavity fills silencing block, lift the erasure effect of acoustic filter.
Description
Technical field
This utility model is related to automotive muffler field, more particularly to a kind of automobile exhaust muffler.
Background technology
The exhaust silencer of automobile is for reducing automobile engine to exhaust noise critical component.Automotive muffler
Dissipative muffler, reactive muffler, impedance composite muffler are broadly divided into according to operation principle.Dissipative muffler is exactly to utilize
The sound absorption of sound-absorbing material, makes the noise propagated along passage constantly gradually be decayed by absorption.Dissipative muffler is suitable for disappearing
A good appetite suddenly appearing in a serious disease, high-frequency noise.Reactive muffler is that the pipeline section of the connection abrupt change of cross-section or side connect resonant cavity on pipeline, using sound wave
The phenomenon such as there is reflection, interfere in abrupt-change cross section, so as to reach the purpose of noise reduction, being mainly used in NARROWBAND NOISE and middle low noise
Control.It is excellent that the impedance composite muffler for using that resistive and two kinds of structure composites of resistance are got up then is combined with the two
Point, realizes erasure effect good in the range of basic, normal, high frequency.Due to the little restriction of muffler volume, internal structure is very simple
Single, noise dampening efficiency is limited, acoustic filter in the market, is still weak in erasure effect.
Utility model content
The purpose of this utility model is to provide a kind of automobile exhaust muffler, improves the noise reduction effect of existing acoustic filter
Really.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of automobile exhaust pipe disappears
Sound device, including inlet tube, silencing cavity and exhaustor, the anterior of the silencing cavity arrange front punching pipe, before the inlet tube connection
One end of punching pipe, one end of the central canal of the other end connection inverted V-shaped of the front punching pipe, the other end pair of the central canal
Punching pipe after claiming to arrange, is provided with inverted V-shaped baffle plate in the central canal, the other end of the rear punching pipe is located in silencing cavity
Tail end, the exhaustor are arranged at the tail end face of silencing cavity, and the port of the rear punching pipe is placed in exhaustor, the preshoot
After Kong Guanhe, the tube wall of punching pipe is provided with sound attenuation hole, and the noise reduction intracavity fills silencing block.
By above-mentioned technical proposal, noise tail gas enters silencing cavity from inlet tube, in the front punching pipe in acoustic filter with after
If part causes inside silencing cavity as tail gas is divided into carried interest air-flow by bloop along the noise that passage is propagated in punching pipe
Air and fiber vibration in silencing block, under the collective effect of frictional resistance and viscosity resistance so that part acoustic energy is converted into
Heat energy and lose, reached the purpose for abating the noise.
Preferably, central canal is separated into the first tube chamber and the second tube chamber by inverted V-shaped baffle plate.
By above-mentioned technical proposal, central canal is divided into two chambers by the baffle plate of falling V, and there is the intrinsic frequency of oneself in each chamber
Rate, when the sound wave for including various frequency contents enters two chambers, the sound wave of some frequencies only near the natural frequency
Could after mesh is reached punching pipe, the sound wave of other frequency then can only in chamber roundtrip, in eliminating, low frequency
The noise of rate.
Preferably, the silencing block is set to rock wool.
By above-mentioned technical proposal, rock wool as a kind of quieter material, in addition to noise dampening efficiency is notable, also with high temperature resistant
Effect.
Preferably, the inlet tube is set to bend pipe.
By above-mentioned technical proposal, inlet tube is set to into bend pipe, has deceleration noise tail gas to act on.
Preferably, the inlet tube end is provided with the first hook, the tube wall of silencing cavity afterbody is symmetrically arranged with second
Hook and the 3rd hook.
By above-mentioned technical proposal, inlet tube end is provided with the first hook, the tube wall of silencing cavity afterbody is symmetrical arranged
There are the second hook and the 3rd hook, by hook, acoustic filter is fixed on automobile by hook, preferably play reinforcement and fix
Effect.
Preferably, the tube wall of the inlet tube end gradually thickeies, between the end face of the inlet tube and the first hook
Tapping flange is set.
By above-mentioned technical proposal, by the end tube wall of inlet tube, gradually thickening is processed, in tube wall and the end face of inlet tube
Function tapping flange is set, and the pipeline of automobile is fixedly connected with inlet tube by tapping flange, can reduce tail pipe and inlet tube
The space of junction, reduces gas leakage.
Preferably, the axis hole in the tapping flange is tapered, the axis hole is small end away from the side of inlet end.
By above-mentioned technical proposal, the pipe wall internal diameters of tapping flange are set to inlet tube inner end diameter correspondingly gradually
Increase, and minimum diameter is equal with the external diameter of import tube wall, maximum inner diameter makes tapping less than the tube wall external diameter of inlet tube end face
Flange is close to inlet tube end.
Preferably, the inlet tube is provided with reinforcing plate with silencing cavity junction.
By above-mentioned technical proposal, reinforcing plate is fixed on inlet tube and silencing cavity junction, plays in inlet tube and noise reduction
Strengthen the effect of fixation between chamber.
Preferably, the inlet tube, silencing cavity and aerofluxuss pipe surface arrange pitch-dark layer.
By above-mentioned technical proposal, inlet tube, silencing cavity and aerofluxuss pipe surface are arranged into pitch-dark layer, pitch-dark chemical property
It is stable, in addition to it can absorb heat energy, moreover it is possible to play etch-proof effect, reduce the damage that acoustic filter is caused as shell corrodes
It is bad.
Preferably, the inlet tube and silencing cavity arrange frosted layer.
By above-mentioned technical proposal, frosted layer is set in inlet tube and silencing cavity surface, increased it and pitch-dark layer between
Adhesive force, extend the durability of coating, increase the contact area of noise tail gas and surface, while increasing the face of pitch-dark layer
Product, can absorb more heat energy.
In sum, this utility model has the advantages that：
On the premise of acoustic filter size is not increased, by the front punching pipe of noise reduction intracavity, rear punching pipe and central canal
Coordinate, play the erasure effect for lifting acoustic filter.Simultaneously between reinforcement automobile and acoustic filter and automobile pipeline and air inlet between
Be fixedly connected, reduce the regeneration noise that acoustic filter is produced due to itself vibration, in acoustic filter surface sand-blasting, pitch-dark painting be set
Layer, extends the service life of acoustic filter.
Description of the drawings
Fig. 1 is the cut-away view of silencing cavity；
Fig. 2 is the side view of acoustic filter；
Fig. 3 is the top view of tapping flange；
Fig. 4 is Section A-A schematic diagram in Fig. 3.
In figure, 1, inlet tube；2nd, silencing cavity；21st, front punching pipe；22nd, central canal；221st, the first tube chamber；222nd, second pipe
Chamber；23rd, inverted V-shaped baffle plate；24th, rear punching pipe；25th, bloop；26th, silencing block；3rd, exhaustor；41st, the first hook；42nd, second
Hook；43rd, the 3rd hook；5th, tapping flange；51st, axis hole；6th, reinforcing plate；7th, pitch-dark layer.
Specific embodiment
This utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, a kind of automobile exhaust muffler, 1 tail end joint noise reduction chamber 2 of inlet tube, the end connection in silencing cavity 2
The tube wall for having one end of front punching pipe 21, front punching pipe 21 is provided with bloop 25, the other end connection internal diameter of front punching pipe 21
The small-caliber end of the central canal 22 for gradually increasing, punching pipe 24 after being symmetrical arranged two on the inside of the heavy caliber end of central canal 22,
23 central canal 22 of inverted V-shaped baffle plate is set between punching pipe 24 afterwards and is separated into the first tube chamber 221 and the second tube chamber 222.Punching afterwards
The afterbody in 24 other end joint noise reduction chamber 2 of pipe, rear 24 lateral tail of punching pipe arrange exhaustor 3, and exhaustor 3 is fixed on silencing cavity
On the end face of 2 afterbodys, the port of rear punching pipe 24 is placed in exhaustor 3.The inwall of silencing cavity 2 and front punching pipe 21, central canal
22nd, the tube wall that full silencing block 25, front punching pipe 21 and rear punching pipe 24 are filled between rear punching pipe 24 has bloop 25, noise reduction
The material of block 25 elects rock wool as.
Referring to Fig. 2, inlet tube 1 is set to bend pipe, and 1 end of inlet tube is provided with the first hook 41, the end face of inlet tube 1
Tapping flange 5 is set between the first hook 41, and inlet tube 1 is provided with reinforcing plate 6 with the junction of silencing cavity 2, silencing cavity 2
The tube wall of tail end is provided with the second hook 42 and the 3rd hook 43,2 afterbody of silencing cavity connection exhaustor 3.Inlet tube 1 and silencing cavity
2 surface sand-blasting process, meanwhile, inlet tube 1, silencing cavity 2 and 3 surface of exhaustor are provided with dope layer, and dope layer is pitch-dark 7.
Referring to Fig. 3 and Fig. 4,5 internal diameter of tapping flange is gradually increased, and the axis hole 51 of tapping flange 5 is tapered, the axis hole 5
It is small end away from the side of inlet end.
During use, the port of air inlet pipe is connected on automobile pipeline, then by tapping method by acoustic filter by the first extension purchase
Inlet tube 1 and exhaustor 3 are strengthened fixing by blue 5, and the second hook 42 and the 3rd hook 43 are fixed on vehicle body, and acoustic filter is installed
Complete.
This specific embodiment is only which is not to restriction of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification for not having creative contribution after this specification is read as needed to the present embodiment, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (10)
1. a kind of automobile exhaust muffler, including inlet tube（1）, silencing cavity（2）And exhaustor（3）, it is characterised in that it is described to disappear
Sound chamber（2）It is anterior arrange before punching pipe（21）, the inlet tube（1）Punching pipe before connection（21）One end, the front punching
Pipe（21）The other end connect inverted V-shaped central canal（22）One end, the central canal（22）The other end be symmetrical arranged backlash
Kong Guan（24）, the central canal（22）Inverted V-shaped baffle plate is provided with inside（23）, the rear punching pipe（24）The other end be located in and disappear
Sound chamber（2）Tail end, the exhaustor（3）It is arranged at silencing cavity（2）Tail end face, the rear punching pipe（24）Port put
In exhaustor（3）It is interior, the front punching pipe（21）With rear punching pipe（24）Tube wall be provided with sound attenuation hole（25）, the noise reduction
Chamber（2）Interior filling silencing block（26）.
2. a kind of automobile exhaust muffler according to claim 1, it is characterised in that the inverted V-shaped baffle plate（23）By in
Heart pipe（22）It is separated into the first tube chamber（221）With the second tube chamber（222）.
3. a kind of automobile exhaust muffler according to claim 1, it is characterised in that the silencing block（26）It is set to rock
Cotton.
4. a kind of automobile exhaust muffler according to claim 1, it is characterised in that the inlet tube（1）It is set to curved
Pipe.
5. a kind of automobile exhaust muffler according to claim 1, it is characterised in that the inlet tube（1）End is arranged
There is the first hook（41）, silencing cavity（2）The tube wall of afterbody is symmetrically arranged with the second hook（42）With the 3rd hook（43）.
6. a kind of automobile exhaust muffler according to claim 5, it is characterised in that the inlet tube（1）The pipe of end
Wall gradually thickeies, the inlet tube（1）End face and first hook（41）Between arrange tapping flange（5）.
7. a kind of automobile exhaust muffler according to claim 6, it is characterised in that the tapping flange（5）Axis hole
（51）It is tapered, the axis hole（51）It is small end away from the side of inlet end.
8. a kind of automobile exhaust muffler according to claim 1, it is characterised in that the inlet tube（1）With silencing cavity
（2）Junction is provided with reinforcing plate（6）.
9. a kind of automobile exhaust muffler according to claim 1, it is characterised in that the inlet tube（1）, silencing cavity
（2）And exhaustor（3）Surface arranges pitch-dark layer（7）.
10. a kind of automobile exhaust muffler according to claim 1, it is characterised in that the inlet tube（1）And silencing cavity
（2）Surface arrange frosted layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621024962.1U CN206054062U (en) | 2016-08-31 | 2016-08-31 | A kind of automobile exhaust muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621024962.1U CN206054062U (en) | 2016-08-31 | 2016-08-31 | A kind of automobile exhaust muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206054062U true CN206054062U (en) | 2017-03-29 |
Family
ID=58374308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621024962.1U Expired - Fee Related CN206054062U (en) | 2016-08-31 | 2016-08-31 | A kind of automobile exhaust muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206054062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165697A (en) * | 2017-07-07 | 2017-09-15 | 爱驰威汽车零部件（盐城）有限公司 | A kind of automobile muffler |
-
2016
- 2016-08-31 CN CN201621024962.1U patent/CN206054062U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165697A (en) * | 2017-07-07 | 2017-09-15 | 爱驰威汽车零部件（盐城）有限公司 | A kind of automobile muffler |
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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: 20170329 Termination date: 20190831 |