CN209540300U - A kind of strip-type silencer - Google Patents
A kind of strip-type silencer Download PDFInfo
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- CN209540300U CN209540300U CN201822089962.5U CN201822089962U CN209540300U CN 209540300 U CN209540300 U CN 209540300U CN 201822089962 U CN201822089962 U CN 201822089962U CN 209540300 U CN209540300 U CN 209540300U
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- thickness
- anechoic sheet
- strip
- type silencer
- windward
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Abstract
The technical issues of the utility model solves is to overcome the defect of existing strip-type silencer noise elimination effect difference, to provide a kind of strip-type silencer that noise elimination effect is good.It includes pedestal and anechoic sheet, anechoic sheet is mounted in the inner cavity of the pedestal, has relief portion, and one end of institute's relief portion is located at the exit of the pedestal, the other end, which is located in the inner cavity, can produce at turbulent position, and the thickness of the relief portion is less than the thickness of the anechoic sheet.The strip-type silencer of the utility model has the advantages that noise elimination effect is more preferable.
Description
Technical field
The utility model relates to silencer technical fields, and in particular to a kind of strip-type silencer.
Background technique
Silencer refers to for while having the airflow line of noise transmission, can be with the sound absorption pipeline of lining and curved
Head utilizes the noise reductions device such as sectional area sudden change and the discontinuous pipeline of other acoustic impedances, and noise in pipeline is made to be decayed
Or it reflects back.Strip-type silencer refers to that the shape of anechoic sheet is the silencer of sheet, and air-flow is from the inlet of strip-type silencer
It enters in the inner cavity of strip-type silencer, is flowed out from the exit of strip-type silencer, the noise in air-flow is by the sound absorption of anechoic sheet
Lining is absorbed, to realize noise elimination effect.It, can be close to out but when air-flow is flowed out from the exit of strip-type silencer
Turbulent flow is generated in inner cavity at mouthful, the turbulent flow of generation can generate noise again, so that the noise elimination effect of strip-type silencer is poor.
Utility model content
Therefore, the technical issues of the utility model solution, is to overcome the defect of existing strip-type silencer noise elimination effect difference,
To provide a kind of strip-type silencer that noise elimination effect is good.
To solve the above problems, the strip-type silencer of the utility model, including pedestal and anechoic sheet, anechoic sheet are mounted on institute
It states in the inner cavity of pedestal, there is relief portion, one end of institute's relief portion is located at the exit of the pedestal, and the other end is located in described
It can produce at turbulent position in chamber, the thickness of the relief portion is less than the thickness of the anechoic sheet.
The length of the relief portion is 2 times to 4 times of the thickness of the anechoic sheet.
The 1/5-5/2 of the thickness with a thickness of the anechoic sheet of the relief portion.
The 1/3 of the thickness with a thickness of the anechoic sheet of the relief portion.
The anechoic sheet forms the relief portion to contract in a thickness direction, and the relief portion is in a thickness direction
Two evacuation side walls are parallel with the middle line of the anechoic sheet.
Anechoic sheet also has a windward side positioned at the pedestal inlet, and the windward side includes portion windward, and with it is described
The rake of portion's connection windward, the extending direction of the relatively described anechoic sheet of the rake have the tilt angle of setting；Air-flow
When entering in inner cavity from the pedestal inlet, hit with the windward side；Air-flow and the middle part in portion windward are hit, rebound
It is flowed into inner cavity in the side-wall outer side of the anechoic sheet afterwards；It hits one end far from the portion windward of air-flow and the rake
It hits, the side-wall outer side after rebound through the anechoic sheet flows into inner cavity.
The 1/5-5/2 with a thickness of the anechoic sheet thickness perpendicular to the anechoic sheet extending direction in the portion windward.
The portion windward perpendicular to the anechoic sheet extending direction with a thickness of the 1/3 of the anechoic sheet thickness.
The portion windward is the plane perpendicular to the anechoic sheet extending direction.
The length of the projection on the anechoic sheet extending direction of the rake is the 0.9-1.1 of anechoic sheet thickness
Times.
The length of projection of the rake on the anechoic sheet extending direction is identical as anechoic sheet thickness.
Technical solutions of the utility model have the advantages that
1. the strip-type silencer of the utility model, including pedestal and anechoic sheet, anechoic sheet are mounted on the inner cavity of the pedestal
In, there is relief portion, one end of institute's relief portion is located at the exit of the pedestal, and the other end, which is located in the inner cavity, can produce rapids
It flows at position, the thickness of the relief portion is less than the thickness of the anechoic sheet.The setting of relief portion can prevent air-flow in inner cavity
Middle generation turbulent flow reduces the noise generated again by turbulent flow, so that the noise elimination effect of strip-type silencer is more preferable.
2. the strip-type silencer of the utility model, the anechoic sheet forms the evacuation to contract in a thickness direction
Portion, the two evacuation side walls of the relief portion in a thickness direction are parallel with the middle line of the anechoic sheet, that is, relief portion is in anechoic sheet
Plane where thickness direction and length direction is projected as rectangle, the noise elimination effect for guaranteeing strip-type silencer simultaneously, and conveniently
Processing, and save the weight and consumable quantity of anechoic sheet.
3. the strip-type silencer of the utility model, when air-flow is entered in inner cavity from the pedestal inlet, with it is described windward
It hits in face；Air-flow and the middle part in portion windward are hit, and are flowed into inner cavity after rebound in the side-wall outer side of the anechoic sheet；Air-flow
It is hit with one end far from the portion windward of the rake, the side-wall outer side after rebound through the anechoic sheet flows into inner cavity
In.After air-flow and windward side are hit, it is that the side-wall outer side through anechoic sheet enters in inner cavity, does not occur to hit again with windward side
It hits, reduces air-flow and enter the resistance in inner cavity；Moreover, the outer wall area of windward side is opposite because windward side includes rake
It is smaller in the outer wall wind resistance area of semicircular structure, local resistance when air-flow enters inner cavity can be reduced accordingly, so that
Strip-type silencer is also applied for the small occasion of throughput, that is, is suitable for the small air-flow output of power, and the scope of application is wider.And
And air-flow can intersect after the rebound of windward side with the air-flow entered directly into inner cavity, formation mixed flow, including reduction air-flow
Flow velocity in chamber, so that the noise elimination effect of strip-type silencer is more preferable.
4. the strip-type silencer of the utility model, the windward side perpendicular to the anechoic sheet extending direction with a thickness of
The 1/3 of the anechoic sheet thickness, the length and anechoic sheet thickness of projection of the rake on the anechoic sheet extending direction
Identical, the noise elimination effect of strip-type silencer is best at this time.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the strip-type silencer of the utility model to be parallel to anechoic sheet width direction and length direction cuing open as section
The schematic diagram of face figure；
Fig. 2 is the enlarged drawing of anechoic sheet in Fig. 1；
Description of symbols:
1- pedestal；2- anechoic sheet；The inner cavity 3-；The portion windward 41-；42- rake；5- side wall；6- mounting portion；7-
Relief portion；71- avoids side wall.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
The strip-type silencer of the present embodiment, as depicted in figs. 1 and 2, including pedestal 1, anechoic sheet 2 and mounting portion 6.
Anechoic sheet 2 is mounted in the inner cavity 3 of the pedestal 1, arranged in parallel, the side wall 5 of the anechoic sheet 2 with it is described
The extension square parallel of anechoic sheet 2.Anechoic sheet 2 has positioned at the windward side of 1 inlet of pedestal, and is located at the pedestal 1
The relief portion 7 in exit.
One end of institute's relief portion 7 is located at the exit of the pedestal 1, and the other end, which is located in the inner cavity 3, can produce turbulent flow
At position, the thickness of the relief portion 7 is less than the thickness of the anechoic sheet 2.It is the anechoic sheet 2 in thickness in the present embodiment
The relief portion 7 is formed to contract on direction, the relief portion 7 two evacuation side walls 71 in a thickness direction and the noise elimination
The middle line of piece 2 is parallel.As shown in Figure 1, relief portion is projected as rectangle in plane where anechoic sheet thickness direction and length direction.
The windward side includes portion 41, and the rake 42 connecting with the portion windward 41 windward, 42 phase of rake
There is the tilt angle of setting to the extending direction of the anechoic sheet 2.In the present embodiment, the portion windward 41 is perpendicular to described
The plane of 2 extending direction of anechoic sheet, i.e., the described windward side are isosceles trapezoid of the upper bottom towards 1 entrance of pedestal.
The strip-type silencer of the present embodiment, as shown in Fig. 2, when air-flow is entered in inner cavity 3 from 1 inlet of pedestal, with
It hits the windward side；Air-flow and the middle part in portion 41 windward are hit, and rebound track is A, in the anechoic sheet 2 after rebound
It is flowed into inner cavity 3 on the outside of side wall 5；One end far from the portion 41 windward of air-flow and the rake 42 is hit, track of rebounding
For B, flowed into inner cavity 3 on the outside of the side wall 5 through the anechoic sheet 2 after rebound.
Structural drag and sound deadening capacity to strip-type silencer are simulated prediction, when, the relief portion 7 is with a thickness of institute
The 1/3 of the thickness of anechoic sheet 2 is stated, the length of the relief portion 7 is 2 times to 4 times of the thickness of the anechoic sheet 2；And it described meets
Wind portion 41 perpendicular to 2 extending direction of anechoic sheet with a thickness of the 1/3 of 2 thickness of anechoic sheet, the inclined surface 42
In 1 times for being projected as 2 thickness of anechoic sheet on 2 extending direction of anechoic sheet, the noise elimination effect of strip-type silencer is best.
For the setting of mounting portion 6 in 1 inlet of pedestal, one end of the separate pedestal 1 of the mounting portion 6 and air-flow are defeated
Part connects out, to guarantee all to be flowed into huge rock silencer from the air-flow that air-flow output exports, so that strip-type silencer
Noise elimination effect is more preferable.
The strip-type silencer of the present embodiment is the side through anechoic sheet 2 after air-flow and windward side shock at air flow inlet
Enter in inner cavity 3 on the outside of wall 5, do not occur to hit again with windward side, reduces air-flow and enter the resistance in inner cavity；Moreover,
Because windward side includes rake 42, the outer wall area of windward side is smaller relative to the outer wall wind resistance area of semicircular structure, can
To reduce local resistance when air-flow enters inner cavity 3 accordingly, so that strip-type silencer is also applied for the small occasion of throughput,
It is suitable for the small air-flow output of power, the scope of application is wider.Moreover, air-flow after the rebound of windward side can with directly into
Enter to the air-flow in inner cavity 3 and intersect, form mixed flow, flow velocity of the air-flow in inner cavity 3 is reduced, so that the noise elimination of strip-type silencer is imitated
Fruit is more preferable.In air flow outlet, the setting of relief portion can prevent air-flow from generating turbulent flow in the lumen, reduce because turbulent flow produces again
Raw noise, so that the noise elimination effect of strip-type silencer is more preferable.
As disposable embodiment, the 1/5-5/2 of the thickness with a thickness of the anechoic sheet 2 of the relief portion 7.
As disposable embodiment, the windward side perpendicular to 2 extending direction of anechoic sheet with a thickness of institute
Between the 1/5-5/2 for stating 2 thickness of anechoic sheet, the rake 42 is projected as eliminating the noise on 2 extending direction of anechoic sheet
0.9-1.1 times of 2 thickness of piece, this size setting of windward side, equally has the advantages that local resistance is small.
As disposable embodiment, the portion windward 41 be arc, the both ends of the arc respectively with the inclination
Portion 42 connects.And air-flow is hit with the portion windward 41 when entering in inner cavity 3 from 1 inlet of pedestal；Air-flow with meet
The middle part in wind portion 41 is hit, and is flowed into inner cavity 3 on the outside of the side wall 5 of the anechoic sheet 2 after rebound；Air-flow and the rake 42
One end far from the portion 41 windward hit, flowed into inner cavity 3 on the outside of the side wall 5 through the anechoic sheet 2 after rebound.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among the protection scope created still in the utility model.
Claims (11)
1. a kind of strip-type silencer, which is characterized in that including,
Pedestal (1)；
Anechoic sheet (2) is mounted in the inner cavity (3) of the pedestal (1), is had relief portion (7), one end position of institute's relief portion (7)
In the exit of the pedestal (1), the other end, which is located in the inner cavity (3), be can produce at turbulent position, the relief portion (7)
Thickness is less than the thickness of the anechoic sheet (2).
2. strip-type silencer according to claim 1, which is characterized in that the length of the relief portion (7) is the noise elimination
2 times to 4 times of the thickness of piece (2).
3. strip-type silencer according to claim 2, which is characterized in that the relief portion (7) with a thickness of the noise elimination
The 1/5-5/2 of the thickness of piece (2).
4. strip-type silencer according to claim 3, which is characterized in that the relief portion (7) with a thickness of the noise elimination
The 1/3 of the thickness of piece (2).
5. strip-type silencer described in any one of -4 according to claim 1, which is characterized in that the anechoic sheet (2) is in thickness
It is formed the relief portion (7) on direction to contract, two evacuation side wall (71) and institute of the relief portion (7) in a thickness direction
The middle line for stating anechoic sheet (2) is parallel.
6. strip-type silencer described in any one of -4 according to claim 1, which is characterized in that anechoic sheet (2), which also has, to be located at
The windward side of pedestal (1) inlet, the windward side includes portion (41) windward, and inclines with what the portion windward (41) connect
Inclined portion (42), the extending direction of the relatively described anechoic sheet (2) of the rake (42) have the tilt angle of setting；
When air-flow is entered in inner cavity (3) from the pedestal (1) inlet, hit with the windward side；Air-flow and portion windward
(41) middle part is hit, and is flowed into inner cavity (3) on the outside of the side wall (5) of the anechoic sheet (2) after rebound；Air-flow and the inclination
The one end far from portion (41) windward in portion (42) is hit, on the outside of the side wall (5) through the anechoic sheet (2) after rebound in inflow
In chamber (3).
7. strip-type silencer according to claim 6, which is characterized in that the portion windward (41) perpendicular to the noise elimination
The 1/5-5/2 with a thickness of the anechoic sheet (2) thickness of piece (2) extending direction.
8. strip-type silencer according to claim 7, which is characterized in that the portion windward (41) perpendicular to the noise elimination
Piece (2) extending direction with a thickness of the 1/3 of the anechoic sheet (2) thickness.
9. strip-type silencer according to claim 6, which is characterized in that the portion windward (41) is perpendicular to the noise elimination
The plane of piece (2) extending direction.
10. strip-type silencer according to claim 6, which is characterized in that the rake (42) in the anechoic sheet
(2) length of the projection on extending direction is 0.9-1.1 times of anechoic sheet (2) thickness.
11. strip-type silencer according to claim 10, which is characterized in that the rake (42) is in the anechoic sheet
(2) length of the projection on extending direction is identical as anechoic sheet (2) thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822089962.5U CN209540300U (en) | 2018-12-12 | 2018-12-12 | A kind of strip-type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822089962.5U CN209540300U (en) | 2018-12-12 | 2018-12-12 | A kind of strip-type silencer |
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| Publication Number | Publication Date |
|---|---|
| CN209540300U true CN209540300U (en) | 2019-10-25 |
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ID=68264313
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822089962.5U Active CN209540300U (en) | 2018-12-12 | 2018-12-12 | A kind of strip-type silencer |
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| CN (1) | CN209540300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488833A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN109488832A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
-
2018
- 2018-12-12 CN CN201822089962.5U patent/CN209540300U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488833A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN109488832A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN109488833B (en) * | 2018-12-12 | 2024-04-23 | 华电重工股份有限公司 | Sheet type muffler |
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