CN206054039U - A kind of acoustic filter - Google Patents
A kind of acoustic filter Download PDFInfo
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- CN206054039U CN206054039U CN201620895802.8U CN201620895802U CN206054039U CN 206054039 U CN206054039 U CN 206054039U CN 201620895802 U CN201620895802 U CN 201620895802U CN 206054039 U CN206054039 U CN 206054039U
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- noise elimination
- inner tube
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- tube
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Abstract
The utility model discloses a kind of acoustic filter, including outer tube and noise elimination inner tube, it is characterized in that, the outer tube is made up of the installation section and middle noise elimination section at two ends, the internal diameter for saving of eliminating the noise is all higher than the internal diameter for installing section, and the tube wall of the noise elimination inner tube is provided with and at least saves the banding breach being connected with eliminating the noise together, and the noise elimination inner tube is socketed with outer tube, and be adapted with noise elimination section, noise elimination die cavity is formed between the inner side of the outside of noise elimination inner tube and section of eliminating the noise.The beneficial effects of the utility model are clearly：Simple and stable structure, low cost, soundproof effect are good, it is to avoid the effect of resonance is good, and easy to process and species is more.
Description
Technical field
This utility model is related to the technical field of acoustic filter, it is more specifically to a kind of for automobile engine system this
Acoustic wave filter structure.
Background technology
Acoustic filter is that a kind of permission air-flow passes through, and can prevent or reduce the part of sound transmission, is to eliminate air force
A kind of important utensil of property noise.As structure is unreasonable, it is poor to there is relatively costly and soundproof effect in the structure of acoustic filter
Problem.But structure also no effectively solving the problems referred to above of the general acoustic filter or silencing apparatus in prior art.Example
Such as 203335144 U of Chinese patent Authorization Notice No. CN, authorized announcement date on December 11st, 2013, innovation and creation it is entitled
Turbocharger silencer, the Patent Case disclose a kind of structure of acoustic filter, by structures such as the bodies and shell by tubulose
Combined innovation, the acoustic filter has good noise reduction to pneumatic broadband noise, but the Patent Case is by dividing plate
Between the endoporus of sound attenuation hole and body eliminated the noise, for turbo charge system this, particularly engine system this, hole class
Structure there is a problem of that soundproof effect and noise reduction are poor.And for example 204692196 U of Chinese patent Authorization Notice No. CN,
In authorized announcement date on October 07th, 2015, the entitled turbocharger silencer of innovation and creation, the Patent Case disclose one kind
The structure of acoustic filter, by left end cap, right end cap and the isostructural combined innovation of noise elimination ring assemblies, the noise elimination increased and entirely disappear
The sound deadening capacity and acting frequency scope of sound device, but the Patent Case increased noise elimination ring and its component, and increase difficult processing
Degree, be present relatively costly.This utility model passes through outer tube and the isostructural combined innovation of noise elimination inner tube, there is provided Yi Zhongjie
Structure simple and stable, low cost, soundproof effect are good, it is to avoid the effect of resonance is good, the acoustic filter more than easy to process and species.
The content of the invention
This utility model solves the structure of general acoustic filter or silencing apparatus in prior art does not have effectively solving cost
A kind of higher and poor problem of soundproof effect, there is provided acoustic filter, it is by outer tube and the isostructural combined innovation of noise elimination inner tube, real
Now the acoustic filter has simple and stable structure, and low cost, soundproof effect are good, it is to avoid the effect of resonance is good, easy to process and species
Many the characteristics of.
In order to solve above-mentioned technical problem, this utility model takes following technical proposals：A kind of acoustic filter, including
Outer tube and noise elimination inner tube, it is characterised in that the outer tube is made up of the installation section and middle noise elimination section at two ends, the interior of section of eliminating the noise
Footpath is all higher than the internal diameter for installing section, and the tube wall of the noise elimination inner tube is provided with the banding being at least connected with section of eliminating the noise together and is lacked
Mouthful, the noise elimination inner tube is socketed with outer tube, and is adapted with noise elimination section, shape between the inner side of the outside of noise elimination inner tube and section of eliminating the noise
Into noise elimination die cavity.
When in use, gas throttles into throttling out from the installation of the outer tube other end from the installation of outer tube one end；When the noise elimination
When gas flow rate in device is accelerated, the gas flow in noise elimination inner tube increases, and the pressure in noise elimination inner tube is more than silence type intracavity
Pressure, the banding breach of gas Jing noise elimination inner tubes, into noise elimination die cavity, the pressure in noise elimination inner tube is gradually reduced, gas flow rate
Diminish, the pressure in noise elimination inner tube is tended to balance with the pressure of silence type intracavity, realize the purpose eliminated the noise；When in the acoustic filter
When gas flow rate slows down, the gas flow in noise elimination inner tube is reduced, and the pressure in noise elimination inner tube disappears less than the pressure of silence type intracavity
The gas Jing banding breach of sound die cavity, into the inside of noise elimination inner tube, the pressure in noise elimination inner tube is progressively increased, and gas flow rate is obtained
To recovery, the pressure in noise elimination inner tube is tended to balance with the pressure of silence type intracavity, realizes the purpose eliminated the noise.
Outer tube and noise elimination inner tube, simple structure, combination form the critical piece of the acoustic filter；The installation section at outer tube two ends,
Simple structure, for being connected in engine system；Noise elimination section in the middle part of outer tube, together with noise elimination inner tube, forms noise elimination die cavity,
When the pressure of the acoustic filter increases, for receiving unnecessary gas, make the flow velocity of gas tend towards stability, reach the mesh of noise elimination
, when the pressure of the acoustic filter reduces, the gas for storing progressively is compensated in noise elimination inner tube, still realize what is eliminated the noise
Purpose；Banding breach, simple structure, compared with general circular hole, sectional area is bigger, and in the unit interval, the flow of gas is more, energy
Enough quick storages or compensation gas, soundproof effect is more preferably；This utility model compared with general acoustic filter, except outer tube and noise elimination
Beyond inner tube, there is no other parts, simple structure, cost are relatively low.
Preferably, the banding breach is the annular breach of the radial direction being arranged on the tube wall of noise elimination inner tube.Annular
Breach, simple structure are easy to process.
Preferably, the width of the annular breach is not quite similar.The annular breach that width is not quite similar, effectively can keep away
Exempt from resonance, further improve soundproof effect.
Preferably, the banding breach is the strip v notch v of the axial direction being arranged on the tube wall of noise elimination inner tube, and
Strip v notch v group is formed, the strip v notch v is the structure of the even tube wall distribution along noise elimination inner tube.Strip v notch v,
As annular breach, simple structure is easy to process.
Preferably, in arbitrary two groups long bar v notch v groups, the length of the strip v notch v is not quite similar.Length
The strip v notch v group being not quite similar, can be prevented effectively from resonance, further improve soundproof effect.
Preferably, the banding breach by the radial direction being arranged on the tube wall of noise elimination inner tube annular breach and be arranged on
The strip v notch v composition of the axial direction on the tube wall of noise elimination inner tube.More preferably, soundproof effect is more for the performance for avoiding resonating of the structure
It is good.
Preferably, the tube wall for eliminating the noise section is provided with multiple tracks annular groove, bottom and the noise elimination of the annular groove
The outer wall of inner tube is in close contact, and the adjacent banding breach sets up separately in the both sides of corresponding one circle contact point.The structure was both carried
The high intensity of section of eliminating the noise, improves the bonding strength of eliminate the noise section and noise elimination inner tube, it is ensured that the Stability Analysis of Structures of the acoustic filter again.
Preferably, the outer wall for eliminating the noise section is provided with spacer.Spacer, simple structure, for the acoustic filter entirety
Positioning and fixation.
There is such beneficial effect due to taking above-mentioned technical scheme, a kind of acoustic filter that this utility model is provided：
By outer tube and the isostructural combined innovation of noise elimination inner tube, there is provided a kind of simple and stable structure, low cost, soundproof effect are good, keep away
The effect for exempting to resonate is good, the acoustic filter more than easy to process and species.
Description of the drawings
Fig. 1 is a kind of structural representation of the present utility model；
A kind of right views of the Fig. 2 for this utility model accompanying drawing 1；
Fig. 3 for this utility model accompanying drawing 2 A-A to the first structural representation；
Fig. 4 for this utility model accompanying drawing 2 A-A to second structural representation；
Fig. 5 for this utility model accompanying drawing 2 A-A to the third structural representation.
In figure：1- noise elimination inner tubes, 2- install section, and 3- eliminates the noise and saves, 4- noise elimination die cavities, 5- annular breach, 6- strip v notch vs,
7- annular grooves, 8- spacers.
Specific embodiment
Refering to accompanying drawing, this utility model is described in further detail.
Embodiment one：With reference to accompanying drawing 1,2,3, a kind of acoustic filter, including outer tube and noise elimination inner tube 1, peace of the outer tube by two ends
Dress section 2 and middle noise elimination section 3 are constituted, and the internal diameter of section 3 of eliminating the noise is all higher than the internal diameter for installing section 2, sets on the tube wall of noise elimination inner tube 1
There are twice and the 3 banding breach being connected are saved with eliminating the noise, noise elimination inner tube 1 is socketed with outer tube, and be adapted with section 3 of eliminating the noise, in noise elimination
Noise elimination die cavity 4 is formed between the inner side of the outside of pipe 1 and section 3 of eliminating the noise, banding breach is and is arranged on the tube wall of noise elimination inner tube 1
Radial direction annular breach 5, the width of bipassage ring v notch v 5 is not quite similar, and the tube wall of section 3 of eliminating the noise is provided with one annular groove
7, the bottom of annular groove 7 is in close contact with the outer wall of noise elimination inner tube 1, and bipassage ring v notch v 5 sets up separately the two of annular groove 7
Side, the outer wall of section 3 of eliminating the noise are provided with spacer 8.
Embodiment two, with reference to accompanying drawing 1,2,4, a kind of acoustic filter, including outer tube and noise elimination inner tube 1, peace of the outer tube by two ends
Dress section 2 and middle noise elimination section 3 are constituted, and the internal diameter of section 3 of eliminating the noise is all higher than the internal diameter for installing section 2, sets on the tube wall of noise elimination inner tube 1
There are twice and the 3 banding breach being connected are saved with eliminating the noise, noise elimination inner tube 1 is socketed with outer tube, and be adapted with section 3 of eliminating the noise, in noise elimination
Noise elimination die cavity 4 is formed between the inner side of the outside of pipe 1 and section 3 of eliminating the noise, banding breach is and is arranged on the tube wall of noise elimination inner tube 1
Axial direction strip v notch v 6, and form two groups long bar v notch v groups, strip v notch v 6 is equal along the tube wall of noise elimination inner tube 1
The structure of even distribution, in two groups long bar v notch v groups, the length of strip v notch v 6 is not quite similar, and sets on the tube wall of section 3 of eliminating the noise
There is one annular groove 7, the bottom of annular groove 7 is in close contact with the outer wall of noise elimination inner tube 1, and two groups long bar v notch v components set
In the both sides of annular groove 7, the outer wall of section 3 of eliminating the noise is provided with spacer 8.
Embodiment three, with reference to accompanying drawing 1,2,5, a kind of acoustic filter, including outer tube and noise elimination inner tube 1, peace of the outer tube by two ends
Dress section 2 and middle noise elimination section 3 are constituted, and the internal diameter of section 3 of eliminating the noise is all higher than the internal diameter for installing section 2, sets on the tube wall of noise elimination inner tube 1
There are twice and the 3 banding breach being connected are saved with eliminating the noise, noise elimination inner tube 1 is socketed with outer tube, and be adapted with section 3 of eliminating the noise, in noise elimination
Form noise elimination die cavity 4 between the inner side of the outside of pipe 1 and section 3 of eliminating the noise, banding breach is by being arranged on the tube wall of noise elimination inner tube 1
The annular breach 5 of one radial direction and strip v notch v 6 grade, the two groups of compositions for the axial direction being arranged on the tube wall of noise elimination inner tube 1, it is long
Bar v notch v 6 be along noise elimination inner tube 1 even tube wall be distributed structure, strip v notch v 6 formed one group long bar v notch v group,
The tube wall of noise elimination section 3 is provided with one annular groove 7, and the bottom of annular groove 7 is in close contact with the outer wall of noise elimination inner tube 1, ring
V notch v 5 and one group long bar v notch v component are located at the both sides of annular groove 7, and the outer wall of section 3 of eliminating the noise is provided with spacer 8.
Above-described three specific embodiments, are described in detail to this utility model.It is used herein specifically
Embodiment is set forth to principle of the present utility model and embodiment, and the explanation of embodiment is only intended to help and understands this reality
With new core concept.It should be pointed out that for those skilled in the art, without departing from this utility model
On the premise of core concept, some modifications, such as outer tube, noise elimination inner tube and banding breach can also be carried out to this utility model
Technical parameter and the quantity etc. of breach modify or claim carries out some combinations, it should fall in this utility model
Within scope of the claims.
Claims (8)
1. a kind of acoustic filter, including outer tube and noise elimination inner tube（1）, it is characterised in that installation section of the outer tube by two ends（2）With
Middle noise elimination section（3）Composition, section of eliminating the noise（3）Internal diameter be all higher than install section（2）Internal diameter, the noise elimination inner tube（1）Pipe
Wall is provided with and at least saves with eliminating the noise together（3）The banding breach being connected, the noise elimination inner tube（1）With outer tube be socketed, and with disappear
Sound section（3）It is adapted, noise elimination inner tube（1）Outside with eliminate the noise section（3）Inner side between formed noise elimination die cavity（4）.
2. a kind of acoustic filter according to claim 1, it is characterised in that the banding breach is and is arranged on noise elimination inner tube
（1）Tube wall on radial direction annular breach（5）.
3. a kind of acoustic filter according to claim 2, it is characterised in that the annular breach（5）Width be not quite similar.
4. a kind of acoustic filter according to claim 1, it is characterised in that the banding breach is and is arranged on noise elimination inner tube
（1）Tube wall on axial direction strip v notch v（6）, and strip v notch v group is formed, the strip v notch v（6）It is along disappearing
Sound inner tube（1）Even tube wall distribution structure.
5. a kind of acoustic filter according to claim 4, it is characterised in that in arbitrary two groups long bar v notch v groups, institute
State strip v notch v（6）Length be not quite similar.
6. a kind of acoustic filter according to claim 1, it is characterised in that the banding breach is by being arranged on noise elimination inner tube
（1）Tube wall on radial direction annular breach（5）Be arranged on noise elimination inner tube（1）Tube wall on axial direction strip v notch v
（6）Composition.
7. a kind of acoustic filter according to claim 1, it is characterised in that the noise elimination section（3）Tube wall be provided with multiple tracks
Annular groove（7）, the annular groove（7）Bottom and noise elimination inner tube（1）Outer wall be in close contact, the adjacent banding lacks
Mouth sets up separately in the both sides of corresponding one circle contact point.
8. a kind of acoustic filter according to claim 1, it is characterised in that the noise elimination section（3）Outer wall be provided with spacer
（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620895802.8U CN206054039U (en) | 2016-08-18 | 2016-08-18 | A kind of acoustic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620895802.8U CN206054039U (en) | 2016-08-18 | 2016-08-18 | A kind of acoustic filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206054039U true CN206054039U (en) | 2017-03-29 |
Family
ID=58381143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620895802.8U Active CN206054039U (en) | 2016-08-18 | 2016-08-18 | A kind of acoustic filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206054039U (en) |
-
2016
- 2016-08-18 CN CN201620895802.8U patent/CN206054039U/en active Active
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