CN109488833A - A kind of strip-type silencer - Google Patents
A kind of strip-type silencer Download PDFInfo
- Publication number
- CN109488833A CN109488833A CN201811523227.9A CN201811523227A CN109488833A CN 109488833 A CN109488833 A CN 109488833A CN 201811523227 A CN201811523227 A CN 201811523227A CN 109488833 A CN109488833 A CN 109488833A
- Authority
- CN
- China
- Prior art keywords
- anechoic sheet
- windward
- strip
- flow
- air
- 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.)
- Granted
Links
- 230000003584 silencer Effects 0.000 title claims abstract description 45
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 33
- 230000008030 elimination Effects 0.000 claims abstract description 13
- 238000003379 elimination reaction Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/20—Reflecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Exhaust Silencers (AREA)
- Duct Arrangements (AREA)
Abstract
The present invention relates to silencer technical fields, and in particular to a kind of strip-type silencer.It includes pedestal and anechoic sheet, anechoic sheet, it is mounted in the inner cavity of the pedestal, with the windward side for being located at the pedestal inlet, the windward side includes portion windward, the rake connecting with the portion windward, the extending direction of the relatively described anechoic sheet of the rake have the tilt angle of setting；When air-flow is entered in inner cavity from the pedestal inlet, hit with the windward side；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；One end far from the portion windward of air-flow and the rake is hit, and the side-wall outer side after rebound through the anechoic sheet flows into inner cavity.Strip-type silencer of the invention has windward side local resistance small, and noise elimination effect is good, advantage applied widely.
Description
Technical field
The present invention 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 the resistance of silencer, which is concentrated mainly on, to disappear
Sound device inlet, based on the local resistance of anechoic sheet.The arrival end of the anechoic sheet of strip-type silencer is semicircle in the prior art
Shape structure when air-flow enters strip-type silencer, is hit with semicircular structure, and the air-flow after shock can be tied with semicircle again
Structure is hit, and the outer wall area of semicircular structure is larger, and the local resistance of anechoic sheet windward side is larger, so that silencer is only fitted
The occasion big for throughput, restricted application；Meanwhile air-flow is when overcoming resistance to enter the inner cavity of strip-type silencer, gas
The flow velocity flowed in strip-type silencer also can be corresponding larger, and the time for the lining absorption of noise that absorbs sound is short, so that strip-type silencer
Noise elimination effect is poor.
Summary of the invention
Therefore, the present invention provides that a kind of windward side local resistance is small, and noise elimination effect is good, and chip applied widely is eliminated the noise
Device.
To solve the above problems, a kind of strip-type silencer of the invention, including pedestal and anechoic sheet, anechoic sheet are mounted on
In the inner cavity of the pedestal, have positioned at the windward side of the pedestal inlet, 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
Between.
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.
0.9-1.1 times for being projected as anechoic sheet thickness on the anechoic sheet extending direction of the rake.
The length of projection of the rake on the anechoic sheet extending direction is identical as anechoic sheet thickness.
The anechoic sheet is arranged in parallel, and the extension square parallel of the side wall of the anechoic sheet and the anechoic sheet.
It further include the mounting portion that the pedestal inlet is set, one end of the separate pedestal of the mounting portion and gas
Flow output connection.
Technical solution of the present invention has the advantages that
1. strip-type silencer of the invention, including pedestal and anechoic sheet, anechoic sheet, are mounted in the inner cavity of the pedestal,
With the windward side for being located at the pedestal inlet, the windward side includes portion, and the inclination connecting with the portion windward windward
Portion, the extending direction of the relatively described anechoic sheet of the rake have the tilt angle of setting；Air-flow is from the pedestal inlet
When into inner cavity, hit with the windward side；Air-flow and the middle part in portion windward are hit, in the anechoic sheet after rebound
Side-wall outer side flows into inner cavity；One end far from the portion windward of air-flow and the rake is hit, and is disappeared after rebound through described
The side-wall outer side of sound piece flows into inner cavity.It is that the side-wall outer side through anechoic sheet enters in inner cavity after air-flow and windward side are hit,
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,
The outer wall area of windward side is smaller relative to the outer wall wind resistance area of semicircular structure, can reduce accordingly in air-flow enters
Local resistance when chamber is suitable for the small air-flow output of power so that strip-type silencer is also applied for the small occasion of throughput
Part, the scope of application are wider.Moreover, air-flow can intersect after the rebound of windward side with the air-flow entered directly into inner cavity, shape
At mixed flow, the flow velocity of air-flow in the lumen is reduced, so that the noise elimination effect of strip-type silencer is more preferable.
2. strip-type silencer of the invention, the windward side perpendicular to the anechoic sheet extending direction with a thickness of described
The 1/3 of anechoic sheet thickness, 1 times for being projected as anechoic sheet thickness on the anechoic sheet extending direction of the rake, this
When strip-type silencer noise elimination effect it is best.
3. strip-type silencer of the invention, the setting of the mounting portion facilitate and connect strip-type silencer and air-flow output
Connect, and guarantee air-flow output output air-flow all flow into strip-type silencer, prevent because air-flow it is excessive caused by noise so that
Noise elimination effect is more preferable.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is strip-type silencer of the invention to be parallel to anechoic sheet width direction and length direction as the sectional view of section
Schematic diagram；
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
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
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.
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.
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.
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 still within the protection scope of the invention.
Claims (8)
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 positioned at the windward side of the pedestal (1) inlet,
The windward side includes portion (41), and the rake (42) connecting with the portion windward (41) windward, rake (42) phase
There is the tilt angle of setting to the extending direction of the anechoic sheet (2)；
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).
2. strip-type silencer according to claim 1, which is characterized in that the portion windward (41) perpendicular to the noise elimination
Between the 1/5-5/2 with a thickness of the anechoic sheet (2) thickness of piece (2) extending direction.
3. strip-type silencer according to claim 2, 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.
4. strip-type silencer according to any one of claim 1-3, which is characterized in that the portion windward (41) is vertical
Directly in the plane of the anechoic sheet (2) extending direction.
5. strip-type silencer described in any one of -4 according to claim 1, which is characterized in that the rake (42)
0.9-1.1 times for being projected as anechoic sheet (2) thickness on anechoic sheet (2) extending direction.
6. strip-type silencer according to claim 5, which is characterized in that the rake (42) is in the anechoic sheet (2)
The length of projection on extending direction is identical as anechoic sheet (2) thickness.
7. strip-type silencer according to claim 1 to 6, which is characterized in that the anechoic sheet (2) is mutually flat
Row setting, and the extension square parallel of the side wall (5) of the anechoic sheet (2) and the anechoic sheet (2).
8. strip-type silencer described in any one of -7 according to claim 1, which is characterized in that further include being arranged in the seat
One end far from the pedestal (1) of the mounting portion (6) of body (1) inlet, the mounting portion (6) is connect with air-flow output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523227.9A CN109488833B (en) | 2018-12-12 | 2018-12-12 | Sheet type muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523227.9A CN109488833B (en) | 2018-12-12 | 2018-12-12 | Sheet type muffler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109488833A true CN109488833A (en) | 2019-03-19 |
| CN109488833B CN109488833B (en) | 2024-04-23 |
Family
ID=65710116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811523227.9A Active CN109488833B (en) | 2018-12-12 | 2018-12-12 | Sheet type muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109488833B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB984817A (en) * | 1960-03-11 | 1965-03-03 | Colchester Woods | Silencing device for gas currents |
| ATA282075A (en) * | 1974-05-13 | 1978-01-15 | Klinger Rudolf | ARRANGEMENT FOR DECELERATING OR PREVENTING A SHOCKWAVE FORMATION |
| WO1992009988A1 (en) * | 1990-11-21 | 1992-06-11 | Sound Attenuators Limited | Improvements in attenuators |
| CN2270838Y (en) * | 1995-04-15 | 1997-12-17 | 铁道部隧道工程局科学研究所 | Noise silencer of axial flow fan for tunnel |
| US6419576B1 (en) * | 2001-03-22 | 2002-07-16 | Air Handling Engineering Ltd. | Sound attenuating inlet silencer for air supplying fan |
| KR20030037506A (en) * | 2001-11-06 | 2003-05-14 | 현대자동차주식회사 | Muffler apparatus |
| US20090269219A1 (en) * | 2005-07-29 | 2009-10-29 | Bsh Bosch Und Siemens Hausgerate Gmbh | Domestic appliance with a sound damper |
| CN202090995U (en) * | 2011-06-20 | 2011-12-28 | 四川正升声学科技有限公司 | Slice-type silencer |
| CN104008748A (en) * | 2014-05-06 | 2014-08-27 | 北京绿创声学工程设计研究院有限公司 | Shuttle type sheet silencer |
| CN205559373U (en) * | 2016-04-16 | 2016-09-07 | 南方风机股份有限公司 | Shock -resistant pipeline formula silencer |
| CN207993474U (en) * | 2018-01-24 | 2018-10-19 | 北京万讯达声学设备有限公司 | A kind of resistive diversion muffler of chip |
| CN109488832A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN209540301U (en) * | 2018-12-12 | 2019-10-25 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN209540300U (en) * | 2018-12-12 | 2019-10-25 | 华电重工股份有限公司 | A kind of strip-type silencer |
-
2018
- 2018-12-12 CN CN201811523227.9A patent/CN109488833B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB984817A (en) * | 1960-03-11 | 1965-03-03 | Colchester Woods | Silencing device for gas currents |
| ATA282075A (en) * | 1974-05-13 | 1978-01-15 | Klinger Rudolf | ARRANGEMENT FOR DECELERATING OR PREVENTING A SHOCKWAVE FORMATION |
| WO1992009988A1 (en) * | 1990-11-21 | 1992-06-11 | Sound Attenuators Limited | Improvements in attenuators |
| CN2270838Y (en) * | 1995-04-15 | 1997-12-17 | 铁道部隧道工程局科学研究所 | Noise silencer of axial flow fan for tunnel |
| US6419576B1 (en) * | 2001-03-22 | 2002-07-16 | Air Handling Engineering Ltd. | Sound attenuating inlet silencer for air supplying fan |
| KR20030037506A (en) * | 2001-11-06 | 2003-05-14 | 현대자동차주식회사 | Muffler apparatus |
| US20090269219A1 (en) * | 2005-07-29 | 2009-10-29 | Bsh Bosch Und Siemens Hausgerate Gmbh | Domestic appliance with a sound damper |
| CN202090995U (en) * | 2011-06-20 | 2011-12-28 | 四川正升声学科技有限公司 | Slice-type silencer |
| CN104008748A (en) * | 2014-05-06 | 2014-08-27 | 北京绿创声学工程设计研究院有限公司 | Shuttle type sheet silencer |
| CN205559373U (en) * | 2016-04-16 | 2016-09-07 | 南方风机股份有限公司 | Shock -resistant pipeline formula silencer |
| CN207993474U (en) * | 2018-01-24 | 2018-10-19 | 北京万讯达声学设备有限公司 | A kind of resistive diversion muffler of chip |
| CN109488832A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN209540301U (en) * | 2018-12-12 | 2019-10-25 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN209540300U (en) * | 2018-12-12 | 2019-10-25 | 华电重工股份有限公司 | A kind of strip-type silencer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109488833B (en) | 2024-04-23 |
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