CN205779127U - A kind of muffler - Google Patents
A kind of muffler Download PDFInfo
- Publication number
- CN205779127U CN205779127U CN201620483591.7U CN201620483591U CN205779127U CN 205779127 U CN205779127 U CN 205779127U CN 201620483591 U CN201620483591 U CN 201620483591U CN 205779127 U CN205779127 U CN 205779127U
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- CN
- China
- Prior art keywords
- cylinder
- pipe
- muffler
- air
- supporting clapboard
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Abstract
The utility model discloses a kind of muffler, including cylinder, described cylinder connects air inlet pipe in axial first side, escape pipe is connected in axial second side, cylinder lumen is sequentially provided with at least one for intercepting air-flow from the first side to the second side vertically, to reach the air-flow blocker unit of erasure effect, described air-flow blocker unit includes the first supporting clapboard, second supporting clapboard and the intermediate cavity formed between the two, the perforated pipe of a piece two ends connection passes from the first supporting clapboard and the second supporting clapboard center, described first supporting clapboard passes around perforated pipe the communicating pipe of at least two ends connection.Air-flow is intercepted by this utility model by air-flow blocker unit, reduces air-flow velocity and exhaust back pressure simultaneously, further increases the erasure effect of deafener.
Description
Technical field
The present invention relates to auto parts and components, be specifically related to muffler.
Background technology
The noise produced during diesel engine work is mainly made up of burning, mechanical noise and aerodynamic noise, its
In the most prominent with the exhaust noise in aerodynamic noise, become the principal element of pollution from environmental noise.Fall
The most efficient method of low exhaust noise is to use muffler.Therefore to reduce the noise of electromotor,
Developing the deafener that sound deadening capacity is big, exhaust resistance (back pressure) is low is the important means reducing diesel engine noise.
The exhaust back pressure of existing deafener is bigger than normal, and the power consumption of electromotor is had certain impact, and inlet flow rate is higher,
Air-flow is relatively big on exhaust noise impact, is mainly manifested in: air-flow can change sound wave propagation in deafener
Rule, is likely to produce regenerated noise simultaneously.High velocity air clashes into silencer component, and deafener can be caused to tie
The vibration noise of structure and turbulence noise.
Summary of the invention
The technical problem to be solved is just to provide a kind of muffler, improves noise reduction effect further
Really, exhaust noise is reduced.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that a kind of muffler, including
Axially both sides are provided with the cylinder of cover, and described cylinder connects air inlet pipe, in axial second side in axial first side
Connecting escape pipe, cylinder lumen is sequentially provided with at least one from the first side to the second side vertically to be carried out air-flow
Intercept, to reach the air-flow blocker unit of erasure effect, described air-flow blocker unit include the first supporting clapboard,
Second supporting clapboard and the intermediate cavity formed between the two, the perforated pipe of a two ends connection is from first
Support dividing plate and the second supporting clapboard central authorities pass, and described first supporting clapboard passes around perforated pipe at least one
The communicating pipe of root two ends connection.
As preferably, it is provided with an air-flow blocker unit, is formed between the first supporting clapboard and the first side neck lid
First chamber, the second chamber of shape between the second side neck lid and the second supporting clapboard, perforated pipe two ends connect respectively
Logical first chamber and the second chamber, communicating pipe two ends be respectively communicated with the first chamber and intermediate cavity.
As preferably, described communicating pipe is along the uniform at least four that arranges of outer circumference of perforated pipe, described perforated pipe
Diameter more than communicating pipe diameter.
As preferably, described air inlet pipe is the most all the most axially vertical with cylinder with escape pipe, and air inlet pipe axle
Axially being parallel to each other to escape pipe, the inner of described air inlet pipe is fixed with cylinder, the inner of described escape pipe
Fix with cylinder.
As preferably, the outer tube wall correspondence air inlet pipe of described cylinder is welded with air inlet pipe and strengthens backplate.
As preferably, the outer tube wall correspondence escape pipe of described cylinder is welded with escape pipe and strengthens backplate.
As preferably, the bottom side barrel of described cylinder is welded with the first U-shaped gripper shoe in axial first side,
Axial second side is welded with the second U-shaped gripper shoe.
As preferably, described cylinder includes outer cylinder body and inner barrel, fills between described outer cylinder body and inner barrel
There are sound-absorbing material and heat-barrier material.
As preferably, described sound-absorbing material is near outer cylinder body, and uses glass fibre to wrap up.
As preferably, described heat-barrier material is near inner barrel, and uses ceramic fibre to wrap up.
The technical solution used in the present invention, is intercepted by air-flow blocker unit air-flow, reduces gas simultaneously
Stream flow velocity and exhaust back pressure, further increase the erasure effect of deafener.
Accompanying drawing explanation
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings:
Fig. 1 is the internal structure schematic diagram of the present invention；
Fig. 2 is B-B direction view in Fig. 1；
Fig. 3 is that aerofluxus is at deafener internal flow schematic diagram；
Fig. 4 is enlarged drawing at I in Fig. 1；
Fig. 5 is the contour structures schematic diagram of the present invention；
Fig. 6 is the side structure schematic diagram of Fig. 5；
Fig. 7 is C direction view in Fig. 6；
Fig. 8 is D direction view in Fig. 6；
Fig. 9 is double-layer barrel rolling and processing schematic diagram.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of muffler, including muffler body 1, muffler body 1 is wrapped
Including cylinder 10 and the cover 11 at the axial two ends of closed cylinder, described cylinder 10 connects air inlet in axial first side
Pipe 2, connects escape pipe 3 in axial second side, and air inlet pipe 2 and escape pipe 3 are arranged with inside cylinder 10
Perforation.Cylinder lumen is sequentially provided with at least one air-flow blocker unit vertically from the first side to the second side.
Wherein, described air-flow blocker unit includes the first supporting clapboard, the second supporting clapboard and between the two
The intermediate cavity formed, the perforated pipe of a two ends connection is from the first supporting clapboard and the second supporting clapboard center
Passing, described first supporting clapboard passes around perforated pipe the communicating pipe of at least two ends connection.Air-flow
Dividing two-way to advance, a road perforated pipe, perforated pipe self has certain erasure effect, additionally leads up to even
Siphunculus, returns after running into the second gripper shoe, can reduce air-flow velocity, and multiple air-flow blocker unit can depend on
Secondary air-flow is intercepted, reduce air-flow velocity and exhaust back pressure, to reach erasure effect simultaneously.
In order to simplify muffler structure, in the present embodiment, it is provided only with an air-flow blocker unit, such as Fig. 1
Shown in, wherein, between the first supporting clapboard 12 and the cover 11 of the first side, form the first chamber 14, second
Forming the second chamber 16 between cover 11 and second supporting clapboard 13 of side, perforated pipe 18 two ends are respectively communicated with
First chamber 14 and the second chamber 16, communicating pipe 17 two ends be respectively communicated with the first chamber 14 and intermediate cavity
15.Specific to the present embodiment, as in figure 2 it is shown, described communicating pipe 17 is uniform along the outer circumference of perforated pipe 18
Arrange four, and the diameter of perforated pipe is more than communicating pipe diameter.
As it is shown on figure 3, enter the air inlet of the first chamber 14 through 4 diameter Ф 40mm by air inlet pipe 2
After communicating pipe 17, air-flow returns at the second supporting clapboard 13, reduces air-flow velocity simultaneously, then passes through Ф
The perforated pipe 18 of 86mm diameter, further intercepts the effect reaching noise reduction to air-flow.
Wherein, the perforation on perforated pipe 18 can effectively eliminate sound HFS；And first support every
Four φ 40mm communicating pipes 17 on plate 12, sound was reflected due to the unexpected change of both sides sectional area,
Thus reducing passing through of sound, this mainly reduces the low frequency part of sound, above-mentioned structure design, makes low frequency
Soundproof effect can be played in the whole interval of high frequency.
Certainly, according to the use requirement of deafener, a number of air-flow blocker unit can be set up, to carry
High erasure effect, meets and uses requirement.
As it is shown in figure 1, described air inlet pipe is the most all the most axially vertical with cylinder with escape pipe, and air inlet pipe
Axially axially being parallel to each other with escape pipe, the inner of described air inlet pipe is fixed with cylinder, described escape pipe interior
End is fixed with cylinder, meanwhile, as it is shown in figure 5, the outer tube wall correspondence air inlet pipe of described cylinder is welded with air inlet
Backplate 22 strengthened by pipe.The outer tube wall correspondence escape pipe of described cylinder is welded with escape pipe and strengthens backplate 31.Pass through
Above-mentioned design, strengthens acoustic filter bulk strength, extends the service life of part.
As shown in Fig. 5 to Fig. 8, the bottom side barrel of described cylinder 10 is welded with a U in axial first side
Type gripper shoe 5, is welded with the second U-shaped gripper shoe 4 in axial second side.In prior art, by the 2nd U
Deafener is fixed by type gripper shoe 4.As shown in Figure 6, the both sides side plate of the second U-shaped gripper shoe 4 is to cylinder
Radially opposite sides are opened, and are welded and fixed with the bottom side barrel of cylinder, as it is shown in fig. 7, the second U-shaped gripper shoe
4 base plate corners are provided with fixing hole, are fixed by fixing hole.And the first U-shaped gripper shoe 5 both sides side plate
Substantially axially vertical with cylinder and with cylinder bottom side barrel is welded and fixed, simultaneously the first U-shaped gripper shoe 5
It is also provided with fixing hole on base plate to be fixed.Owing to the second U-shaped gripper shoe is as main support face, therefore
One U-shaped gripper shoe both sides side sheet room distance is less than the second U-shaped gripper shoe both sides side sheet room distance, on the whole,
First U-shaped gripper shoe base area is less than the second U-shaped gripper shoe base area.Owing to arranging a U simultaneously
Type gripper shoe 5 and the second U-shaped gripper shoe 4, add the bottom support area of acoustic filter, strengthen support
Intensity, the balanced engine vibration amplitude to deafener impact, increase the service life.
As it is shown in figure 5, the entrance point of air inlet pipe 2 is provided with inlet flange 21.As shown in Figure 8, inlet flange
21 are substantially square, naturally it is also possible to rounded or other shapes, and foursquare four edges are provided with
For the fixing hole being bolted, this inlet flange 21 is tightly connected with air vent.
As it is shown on figure 3, described cylinder 10 includes outer cylinder body 104 and inner barrel 101, described outer cylinder body and interior
Sound-absorbing material 103 and heat-barrier material 102 it is filled with between cylinder.Described sound-absorbing material is near outer cylinder body, and adopts
4mm thickness sound-absorbing material is wrapped up with glass fibre.Described heat-barrier material is near inner barrel, and uses pottery fine
Dimension parcel 2mm thickness heat-barrier material.
Use double-layer barrel structure, the lifting surface area of acoustic filter can be increased, the tired effect that disperse vibration is brought
Should, prevent the whole cylinder of acoustic filter from rupturing.Sound-absorbing material, heat-barrier material is filled between double-layer barrel,
Absorb the isolation high temperature within the acoustic filter baking to exterior part while engine noise.
Wherein, inner barrel 101 uses aludip to process, and it is abound with perforation, and thickness is 1.2mm, outward
Cylinder is the intensity for increasing whole cylinder, and it uses 1.5mm aludip to process.
Owing to double-layer barrel structure is different from the processing of general acoustic filter, it is whole that reprocessing process has due to cylinder
Body thickness adds more than 1/3, therefore develops bilateral edge knurling process, solves double shell and rolls sealing simultaneously
Critical technological point.As it is shown in figure 9, corresponding double-layer barrel two ends are respectively arranged by the first roller A and the second roller B
The roller group of composition, after being enclosed by the first roller 1/2, the second roller follows up simultaneously and seals double-layer barrel
Dress, the benefit simultaneously encapsulated, it is that the packing material preventing inside extends under the compressing of external force outward and leaks outside
Problem.
Claims (10)
1. a muffler, is provided with the cylinder of cover including axial both sides, and described cylinder is in axial first side even
Tap into trachea, connect escape pipe in axial second side, it is characterised in that: cylinder lumen is vertically from the first side
It is sequentially provided with at least one to the second side air-flow is intercepted, to reach the air-flow blocker unit of erasure effect,
Described air-flow blocker unit includes the first supporting clapboard, the second supporting clapboard and the centre formed between the two
Chamber, the perforated pipe of a two ends connection passes from the first supporting clapboard and the second supporting clapboard central authorities, described
First supporting clapboard passes around perforated pipe the communicating pipe of at least two ends connection.
A kind of muffler the most according to claim 1, it is characterised in that: it is provided with an air-flow and intercepts single
Unit, forms the first chamber between the first supporting clapboard and the first side neck lid, the second side neck lid and second support every
Second chamber of shape between plate, perforated pipe two ends are respectively communicated with the first chamber and the second chamber, communicating pipe two ends
It is respectively communicated with the first chamber and intermediate cavity.
A kind of muffler the most according to claim 2, it is characterised in that: described communicating pipe is along perforated pipe
The uniform at least four that arranges of outer circumference, the diameter of described perforated pipe more than communicating pipe diameter.
4. according to a kind of muffler described in claims 1 to 3 any one, it is characterised in that enter described in:
Trachea is the most all the most axially vertical with cylinder with escape pipe, and air inlet pipe is the most flat with escape pipe
OK, the inner of described air inlet pipe is fixed with cylinder, and the inner of described escape pipe is fixed with cylinder.
A kind of muffler the most according to claim 4, it is characterised in that: the outer tube wall pair of described cylinder
Answer air inlet pipe to be welded with air inlet pipe and strengthen backplate.
A kind of muffler the most according to claim 4, it is characterised in that: the outer tube wall pair of described cylinder
Answer escape pipe to be welded with escape pipe and strengthen backplate.
A kind of muffler the most according to claim 4, it is characterised in that: the bottom side barrel of described cylinder
It is welded with the first U-shaped gripper shoe in axial first side, is welded with the second U-shaped gripper shoe in axial second side.
A kind of muffler the most according to claim 1, it is characterised in that: described cylinder includes outer cylinder body
And inner barrel, it is filled with sound-absorbing material and heat-barrier material between described outer cylinder body and inner barrel.
A kind of muffler the most according to claim 8, it is characterised in that: described sound-absorbing material is near outward
Cylinder, and use glass fibre to wrap up.
A kind of muffler the most according to claim 9, it is characterised in that: described heat-barrier material is close
Inner barrel, and use ceramic fibre to wrap up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620483591.7U CN205779127U (en) | 2016-05-23 | 2016-05-23 | A kind of muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620483591.7U CN205779127U (en) | 2016-05-23 | 2016-05-23 | A kind of muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205779127U true CN205779127U (en) | 2016-12-07 |
Family
ID=58113156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620483591.7U Expired - Fee Related CN205779127U (en) | 2016-05-23 | 2016-05-23 | A kind of muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205779127U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863785A (en) * | 2016-05-23 | 2016-08-17 | 浙江创格科技有限公司 | Exhaust silencer |
| CN107725323A (en) * | 2017-09-26 | 2018-02-23 | 台州宝乾机电有限公司 | A kind of muffler and its noise reduction method |
| CN108005755A (en) * | 2017-11-28 | 2018-05-08 | 陕西矩阵动力科技有限公司 | A kind of silencing apparatus and cluster engine |
-
2016
- 2016-05-23 CN CN201620483591.7U patent/CN205779127U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863785A (en) * | 2016-05-23 | 2016-08-17 | 浙江创格科技有限公司 | Exhaust silencer |
| CN105863785B (en) * | 2016-05-23 | 2018-10-30 | 浙江创格科技有限公司 | A kind of muffler |
| CN107725323A (en) * | 2017-09-26 | 2018-02-23 | 台州宝乾机电有限公司 | A kind of muffler and its noise reduction method |
| CN108005755A (en) * | 2017-11-28 | 2018-05-08 | 陕西矩阵动力科技有限公司 | A kind of silencing apparatus and cluster engine |
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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: 20161207 Termination date: 20170523 |