CN105864109A - Silencer for axial flow fan air inlet - Google Patents
Silencer for axial flow fan air inlet Download PDFInfo
- Publication number
- CN105864109A CN105864109A CN201510032947.5A CN201510032947A CN105864109A CN 105864109 A CN105864109 A CN 105864109A CN 201510032947 A CN201510032947 A CN 201510032947A CN 105864109 A CN105864109 A CN 105864109A
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- Prior art keywords
- air inlet
- axial flow
- acoustic filter
- noise elimination
- cavity
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a silencer for an axial flow fan air inlet. The integral structure of the silencer is a column connected with the axial flow fan air inlet. The silencer comprises a shell body (1), a flange (2), a center silencing barrel (3) and a plurality of silencing flow guide inserting pieces (4). A front plate of the shell body (1) is round, and the middle of the shell body (1) is provided with a round hole. The flange (2) is installed at the round hole and used for being connected with a flange at the axial flow fan air inlet. A back plate of the shell body (1) is a round solid plate. The cylindrical side wall of the shell body (1) is uniformly provided with a plurality of rectangular air inlets. A cavity is formed inside the shell body (1). The silencing barrel (3) is formed in the position, inside the cavity, of the back plate of the shell body (1). The multiple silencing flow guide inserting pieces (4) are uniformly distributed on the periphery of the silencing barrel (3), the upper cambered surface of each silencing flow guide inserting piece is tangent to the circumference of the axial flow fan air inlet, and the lower cambered surface of each silencing flow guide inserting piece and the upper cambered surface of another adjacent silencing flow guide inserting piece (4) form an air inlet channel.
Description
Technical field
The present invention relates to muffler device field, particularly to the acoustic filter of a kind of axial flow blower air inlet.
Background technology
In recent years, developing rapidly along with socioeconomic, sound pollution increasingly causes the concern of people.Exist for a long time
The industrial site work that noise is higher, can produce the symptoms such as auditory fatigue, headache, tinnitus, and severe patient is even lost
Audition.Therefore the noise abatement of industrial site seems more and more important.
Noise of axial flow fan is big at present, and wind speed is fast, and silencing scheme is few, and commonly used import department adds silencing apparatus,
Silencing apparatus exists bulky, fixing difficulty, and flow resistance is big, and noise reduction is difficult to reach the problems such as requirement.
Summary of the invention
The volume that it is an object of the invention to overcome current axial flow blower air inlet acoustic filter to exist is big, fixing difficulty, fall
Effect of making an uproar is difficult to reach the defect of requirement, devises a kind of volume little, simple in construction, the axle that noise reduction is significant
Flow fan air inlet acoustic filter.
To achieve these goals, the invention provides a kind of axial flow blower air inlet acoustic filter, its overall structure is
One cylinder, is connected with air inlet, including: housing 1, flange 2, silencing pot 3 and several noise elimination water conservancy diversion
Plug-in unit 4；The header board of described housing 1 is circular, and middle part has circular hole, and described flange 2 is installed on circular hole, is used for
Flange joint with air inlet；The back plate of described housing 1 is circular solid plate；The cylindrical shape of described housing 1
Several rectangle air inlets it are uniformly provided with on sidewall；Described housing 1 be internally formed a cavity, in cavity,
Described housing 1 back plate is provided with described silencing pot 3；Noise elimination cotton is filled in cylinder；Around described silencing pot 3 uniform
Several noise elimination flow directing insert 4 is distributed, and the material of described noise elimination flow directing insert 4 is perforated plate, cambered surface and wind on it
The circumference of machine air inlet is tangent, and its lower camber side constitutes air intake with the upper cambered surface of another adjacent noise elimination flow directing insert 4
Passage.
In technique scheme, between the upper cambered surface of described noise elimination flow directing insert 4, lower camber side and the housing 1 contacted
Forming a cavity, in cavity, the longitudinal direction along whole device is provided with a plate 5, and cavity is divided into two parts, uses
In increasing defening effect, reduce acoustic radiating；Described plate 5 is solid slab；Described noise elimination flow directing insert 4 whole
Sound absorption cotton 6 is filled in individual cavity.
In technique scheme, the number of described noise elimination flow directing insert 4 is 10.
In technique scheme, the thickness of the sound absorption cotton 6 in several noise elimination flow directing insert 4 described is gradually reduced,
For adding the width of sound sucting band.
In technique scheme, the axial height of described housing 1 is 500mm.
In technique scheme, the material of described housing 1 is high density sound insulating material, and its inner surface is pasted sound insulation
Damping sheet, is used for increasing oise insulation factor.
In technique scheme, in described housing 1 cylindrical lateral wall, the area summation of all rectangle air inlets is more than
2 times of described air inlet diameter.
In technique scheme, the material of described flange 2 is high density sound insulating material.
In technique scheme, the half of a diameter of described air inlet diameter of described silencing pot 3, material is
Perforated plate.
In technique scheme, described housing 1 back plate inwall is provided with absorbent treatment, makes an uproar for directly absorbing blower fan radiation
Sound.
It is an advantage of the current invention that:
1, the acoustic filter of the present invention coordinating by noise elimination water conservancy diversion inserted sheet and center silencing pot, can effectively blower fan be entered
Eliminating the noise and insulate against sound in air port, prevents the radiation of noise；
2, the noise elimination flow directing insert of the present invention can increase silencing channel length, simultaneously in plug-in unit while water conservancy diversion
The dividing plate that portion installs can effectively insulate against sound, and prevents sound to external radiation；And the streamlined knot of flow directing insert of eliminating the noise
Structure can effectively reduce windage；
3, the acoustic filter of the present invention has simple in construction, easy to process, noise reduction outstanding feature.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air inlet acoustic filter of the present invention；
Fig. 2 is the radial cross-section of the air inlet acoustic filter of the present invention；
Fig. 3 is the axial sectional view of the air inlet acoustic filter of the present invention.
Accompanying drawing identifies:
1, housing 2, flange 3, silencing pot
4, noise elimination flow directing insert 5, plate 6, sound absorption cotton
Detailed description of the invention
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of axial flow blower air inlet acoustic filter, its overall structure is a cylinder, enters with blower fan
Air port is connected, including: housing 1, flange 2, silencing pot 3 and several noise elimination flow directing insert 4；Described housing 1
Header board be circular, middle part has circular hole, and described flange 2 is installed on circular hole, for the method with air inlet
Blue connection；The back plate of described housing 1 is circular solid plate；If being uniformly provided with in the cylindrical lateral wall of described housing 1
Dry rectangle air inlet；Described housing 1 be internally formed a cavity, in cavity, described housing 1 back plate
It is provided with described silencing pot 3；Noise elimination cotton is filled in cylinder；Around described silencing pot 3, it is evenly distributed with several lead
Stream plug-in unit 4, the material of described noise elimination flow directing insert 4 is perforated plate, and on it, cambered surface is tangent with the circumference of air inlet,
Its lower camber side constitutes air intake passage with the upper cambered surface of another adjacent noise elimination flow directing insert 4.
As in figure 2 it is shown, formed between the upper cambered surface of described noise elimination flow directing insert 4, lower camber side and the housing 1 that contacts
One cavity, in cavity, the longitudinal direction along whole device is provided with a plate 5, cavity is divided into two parts, is used for increasing
Add defening effect, reduce acoustic radiating；Described plate 5 is solid slab；The whole chamber of described noise elimination flow directing insert 4
Internal filling sound absorption cotton 6.
Preferably, the number of described noise elimination flow directing insert 4 is 10.
The thickness of the sound absorption cotton 6 in several noise elimination flow directing insert 4 described is gradually reduced, and is used for adding sound absorption frequency
The width of band.
As it is shown on figure 3, the half of a diameter of described air inlet diameter of described silencing pot 3, material is perforation
Plate.
Preferably, the axial height of described housing 1 is 500mm.
The material of described housing 1 is high density sound insulating material, its inner surface is pasted sound insulation damping sheet, is used for increasing
Oise insulation factor.
In described housing 1 cylindrical lateral wall all rectangle air inlets area and more than described air inlet diameter
2 times.
The material of described flange 2 is high density sound insulating material.
Described housing 1 back plate inwall is provided with absorbent treatment, for directly absorbing blower fan radiated noise.
Claims (10)
1. an axial flow blower air inlet acoustic filter, its overall structure is a cylinder, is connected with air inlet,
Including: housing (1), flange (2), center silencing pot (3) and several noise elimination flow directing insert (4)；Its feature
Being, the header board of described housing (1) is circular, and middle part has circular hole, and described flange (2) is installed on circular hole,
For the Flange joint with air inlet；The back plate of described housing (1) is circular solid plate；Described housing (1)
Cylindrical lateral wall on be uniformly provided with several rectangle air inlets；Described housing (1) be internally formed a cavity,
In cavity, described housing (1) back plate is provided with described silencing pot (3)；Noise elimination cotton is filled in cylinder；Disappear described
The surrounding of cylinder record (3) is evenly distributed with several noise elimination flow directing insert (4), described noise elimination flow directing insert (4)
Material is perforated plate, and on it, cambered surface is tangent with the circumference of air inlet, its lower camber side and another adjacent noise elimination
The upper cambered surface of flow directing insert (4) constitutes air intake passage.
Axial flow blower air inlet acoustic filter the most according to claim 1, it is characterised in that described noise elimination water conservancy diversion
A cavity is formed, along whole in cavity between the upper cambered surface of plug-in unit (4), lower camber side and the housing (1) contacted
The longitudinal direction of individual device is provided with a plate (5), and cavity is divided into two parts, is used for increasing defening effect, minimizing sound
Sound radiates；Described plate (5) is solid slab；Sound absorption is filled in the whole cavity of described noise elimination flow directing insert (4)
Cotton (6).
Axial flow blower air inlet acoustic filter the most according to claim 2, it is characterised in that described noise elimination water conservancy diversion
The number of plug-in unit (4) is 10.
Axial flow blower air inlet acoustic filter the most according to claim 3, it is characterised in that described several disappear
The thickness of the sound absorption in sound flow directing insert (4) cotton (6) is gradually reduced, for adding the width of sound sucting band.
Axial flow blower air inlet acoustic filter the most according to claim 1, it is characterised in that described housing (1)
Axial height be 500mm.
Axial flow blower air inlet acoustic filter the most according to claim 1, it is characterised in that described housing (1)
Material be high density sound insulating material, on its inner surface paste sound insulation damping sheet, be used for increasing oise insulation factor.
Axial flow blower air inlet acoustic filter the most according to claim 1, it is characterised in that described housing (1)
In cylindrical lateral wall, the area summation of all rectangle air inlets is more than 2 times of described air inlet diameter.
Axial flow blower air inlet acoustic filter the most according to claim 1, it is characterised in that described flange (2)
Material be high density sound insulating material.
Axial flow blower air inlet acoustic filter the most according to claim 1, it is characterised in that described silencing pot (3)
The half of a diameter of described air inlet diameter, material is perforated plate.
Axial flow blower air inlet acoustic filter the most according to claim 1, it is characterised in that described housing (1)
Back plate inwall is provided with absorbent treatment, for directly absorbing blower fan radiated noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510032947.5A CN105864109B (en) | 2015-01-22 | 2015-01-22 | A kind of axial flow blower air inlet silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510032947.5A CN105864109B (en) | 2015-01-22 | 2015-01-22 | A kind of axial flow blower air inlet silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105864109A true CN105864109A (en) | 2016-08-17 |
| CN105864109B CN105864109B (en) | 2018-08-07 |
Family
ID=56624029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510032947.5A Active CN105864109B (en) | 2015-01-22 | 2015-01-22 | A kind of axial flow blower air inlet silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105864109B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286533A (en) * | 2017-01-09 | 2018-07-17 | 中国科学院声学研究所 | A kind of axial flow blower air inlet silencer |
| CN109404318A (en) * | 2018-12-18 | 2019-03-01 | 南京磁谷科技有限公司 | A kind of magnetic suspension cfentrifugal blower cabinet |
| CN109404345A (en) * | 2018-12-18 | 2019-03-01 | 南京磁谷科技有限公司 | A kind of air inlet noise-reducing structure of magnetic suspension blower |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01190997A (en) * | 1988-01-25 | 1989-08-01 | Hitachi Ltd | Blower device |
| CN2379631Y (en) * | 1999-06-30 | 2000-05-24 | 常熟市鼓风机厂 | Disc like silencer of air-intaking of vantilation fan |
| CN2438937Y (en) * | 2000-03-23 | 2001-07-11 | 黄成新 | Multi-stage noise reducing apparatus of burner for fuel and gas combustion boiler |
| CN2695702Y (en) * | 2004-03-12 | 2005-04-27 | 江苏省交通科学研究院有限公司 | Silencer for axial fan |
| CN2736679Y (en) * | 2004-08-17 | 2005-10-26 | 张三明 | Sound-deadening ventilator |
| CN202187960U (en) * | 2011-07-15 | 2012-04-11 | 厦门市蓝天碧海环境工程有限公司 | Impedance acoustic streaming blower muffler |
| CN102780310A (en) * | 2012-08-15 | 2012-11-14 | 中电电机股份有限公司 | Noise reducing cover for air intake of motor cooler |
| CN203248402U (en) * | 2013-03-27 | 2013-10-23 | 史立新 | Cooling fan for diesel |
-
2015
- 2015-01-22 CN CN201510032947.5A patent/CN105864109B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01190997A (en) * | 1988-01-25 | 1989-08-01 | Hitachi Ltd | Blower device |
| CN2379631Y (en) * | 1999-06-30 | 2000-05-24 | 常熟市鼓风机厂 | Disc like silencer of air-intaking of vantilation fan |
| CN2438937Y (en) * | 2000-03-23 | 2001-07-11 | 黄成新 | Multi-stage noise reducing apparatus of burner for fuel and gas combustion boiler |
| CN2695702Y (en) * | 2004-03-12 | 2005-04-27 | 江苏省交通科学研究院有限公司 | Silencer for axial fan |
| CN2736679Y (en) * | 2004-08-17 | 2005-10-26 | 张三明 | Sound-deadening ventilator |
| CN202187960U (en) * | 2011-07-15 | 2012-04-11 | 厦门市蓝天碧海环境工程有限公司 | Impedance acoustic streaming blower muffler |
| CN102780310A (en) * | 2012-08-15 | 2012-11-14 | 中电电机股份有限公司 | Noise reducing cover for air intake of motor cooler |
| CN203248402U (en) * | 2013-03-27 | 2013-10-23 | 史立新 | Cooling fan for diesel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286533A (en) * | 2017-01-09 | 2018-07-17 | 中国科学院声学研究所 | A kind of axial flow blower air inlet silencer |
| CN108286533B (en) * | 2017-01-09 | 2020-06-16 | 中国科学院声学研究所 | Silencer for air inlet of axial flow fan |
| CN109404318A (en) * | 2018-12-18 | 2019-03-01 | 南京磁谷科技有限公司 | A kind of magnetic suspension cfentrifugal blower cabinet |
| CN109404345A (en) * | 2018-12-18 | 2019-03-01 | 南京磁谷科技有限公司 | A kind of air inlet noise-reducing structure of magnetic suspension blower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105864109B (en) | 2018-08-07 |
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