CN107435664A - A kind of axial cooling fan silencer - Google Patents
A kind of axial cooling fan silencer Download PDFInfo
- Publication number
- CN107435664A CN107435664A CN201610364973.2A CN201610364973A CN107435664A CN 107435664 A CN107435664 A CN 107435664A CN 201610364973 A CN201610364973 A CN 201610364973A CN 107435664 A CN107435664 A CN 107435664A
- Authority
- CN
- China
- Prior art keywords
- perforated pipe
- layer perforated
- outer layer
- cooling fan
- axial cooling
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
Abstract
The present invention relates to a kind of axial cooling fan silencer, including：Muffler shell, air inlet or exhaust section, flow deflector, outer layer perforated pipe, bulb, internal layer perforated pipe, mounting plate, center tube end plate；Wherein, muffler shell is the shell-like structure of inner hollow and two-phase opposite open, is provided with mounting plate on an opening surface, its center position is provided with circular hole；Air inlet or exhaust section are installed, its center position is provided with circular hole, and the surrounding of the circular hole is into streamlined on another opening surface；Uniform sound-absorbing hole on outer layer perforated pipe, outer layer perforated pipe are connected by mounting plate with muffler shell, and sound-absorbing material is filled between outer layer perforated pipe and muffler shell；Uniform sound-absorbing hole on internal layer perforated pipe, it is connected by flow deflector with outer layer perforated pipe, the inside of internal layer perforated pipe is filled with sound-absorbing material, and it is provided with center tube end plate on one end close to mounting plate, and it is provided with bulb on the other end of air inlet or exhaust section；Flow deflector is into screw type.
Description
Technical field
The present invention relates to fan noise elimination field, more particularly to a kind of axial cooling fan silencer.
Background technology
In recent years, with network technology and the development of industry 4.0, increasing server, controller are applied to people
Work and life.While bringing huge convenient to the mankind, air power noise caused by the radiator fan that runs at high speed
Not only easily make one to have the fidgets, operating efficiency reduces, and is chronically in high-noise environment, also results in Hiccough and deaf, nerve
A series of diseases such as weak, hypertension, endocrine disturbance.
The content of the invention
The defects of it is an object of the invention to overcome dissipation from electronic devices fan noise of the prior art big, so as to provide
A kind of silencer that can effectively reduce noise.
To achieve these goals, the invention provides a kind of axial cooling fan silencer, including：Muffler shell 1,
Air inlet or exhaust section 2, flow deflector 3, outer layer perforated pipe 4, bulb 5, internal layer perforated pipe 6, mounting plate 7, center tube end plate 8；
Wherein,
The muffler shell 1 is the shell-like structure of inner hollow and two-phase opposite open, in the muffler shell 1
Mounting plate 7 is installed, the center position of the mounting plate 7 is provided with circular hole on one opening surface；Outside the silencer
The air inlet or exhaust section 2 be installed, the center position of the air inlet or exhaust section 2 is provided with circle on another opening surface of shell 1
Hole, the surrounding of the circular hole is then into streamlined；Uniform sound-absorbing hole on the outer layer perforated pipe 4, it is located at the muffler shell 1
Inside, the outer layer perforated pipe 4 are connected by the mounting plate 7 with the muffler shell 1, the outer layer perforated pipe 4
Sound-absorbing material is filled between muffler shell 1；Uniform sound-absorbing hole on the internal layer perforated pipe 6, it is located at the silencer
The inside of shell 1, it is connected by the flow deflector 3 with outer layer perforated pipe 4, the inside of the internal layer perforated pipe 6 is filled with sound absorption
Material, it is provided with center tube end plate 8 on one end of mounting plate 7, and it is another close to the air inlet or exhaust section 2
Bulb 5 is installed on end；The flow deflector 3 is into screw type.
In above-mentioned technical proposal, the internal diameter of the outer layer perforated pipe 4 and the axial cooling fan or axle stream wind to be serviced
The fan blade external diameter of machine matches.
In above-mentioned technical proposal, the internal diameter of the internal layer perforated pipe 6 and the axial cooling fan or axle stream wind to be serviced
The fan electromotor external diameter of machine matches.
In above-mentioned technical proposal, helical pitch, thickness, the rotation direction of the flow deflector 3 of the screw type are scattered according to the axle serviced
The requirement of the air pressure air flow of Hot-air fan or axial flow blower is adjusted.
In above-mentioned technical proposal, the aperture of the outer layer perforated pipe 4 or the sound-absorbing hole on internal layer perforated pipe 6, punching rate root
It is adjusted according to the requirement of specific noise reduction.
In above-mentioned technical proposal, the outer layer perforated pipe 4 or the sound-absorbing hole on internal layer perforated pipe 6 are shaped as circular hole, or
The hole of other forms, crack structure.
The advantage of the invention is that：
The present invention silencer have small volume, flow resistance are low, noise reduction is big, can modular arrangement the features such as.By laboratory
Test and in-site measurement, especially for high rotating speed, high blast, strong noise radiator fan, its noise reduction is more excellent, can be very big
Improvement working environment.
Brief description of the drawings
Fig. 1 is the schematic diagram on a visual angle of the axial cooling fan silencer of the present invention；
Fig. 2 is the schematic diagram on another visual angle of the axial cooling fan silencer of the present invention；
Fig. 3 is that the axial cooling fan silencer of the present invention is arranged on the schematic diagram on axial cooling fan.
Drawing explanation
The air inlet of 1 muffler shell 2 or exhaust section
The outer layer perforated pipe of 3 flow deflector 4
The internal layer perforated pipe of 5 bulb 6
The center tube end plate of 7 mounting plate 8
9 axial cooling fans
Embodiment
In conjunction with accompanying drawing, the invention will be further described.
The silencer of the present invention is applied to axial cooling fan or axial flow blower, as depicted in figs. 1 and 2, the silencer bag
Include：Muffler shell 1, air inlet or exhaust section 2, flow deflector 3, outer layer perforated pipe 4, bulb 5, internal layer perforated pipe 6, mounting plate
7th, center tube end plate 8；Wherein, the muffler shell 1 is the shell-like structure of inner hollow and two-phase opposite open, in silencer
Mounting plate 7 is installed, the center position of the mounting plate 7 is provided with circular hole on one opening surface of shell 1；It is described to disappear
Air inlet or exhaust section 2 be installed, the center position of the air inlet or exhaust section 2 is provided with another opening surface of sound device shell 1
Circular hole, the surrounding of center hole is then into streamlined；Uniform sound-absorbing hole on the outer layer perforated pipe 4, it is located at outside the silencer
The inside of shell 1, outer layer perforated pipe 4 are connected by mounting plate 7 with muffler shell 1, the outer layer perforated pipe 4 and silencer
Sound-absorbing material is filled between shell 1；Uniform sound-absorbing hole on the internal layer perforated pipe 6, it is located at the interior of the muffler shell 1
Portion, it is connected by flow deflector 3 with outer layer perforated pipe 4, the inside of the internal layer perforated pipe 6 is filled with sound-absorbing material, and it is close to peace
Fill and center tube end plate 8 is installed on one end of fixed plate 7, it is provided with bulb 5 on the other end of air inlet or exhaust section 2；
The flow deflector 3 is into screw type.
Above is its all parts is done further by the description of the general structure to the silencer of the present invention below
It is bright.
The internal diameter of the outer layer perforated pipe 4 and the axial cooling fan or the fan blade external diameter of axial flow blower to be serviced
Match.
The internal diameter of the internal layer perforated pipe 6 and the axial cooling fan or the fan electromotor external diameter of axial flow blower to be serviced
Match.
The aperture perforated on the outer layer perforated pipe 4 or internal layer perforated pipe 6, punching rate can be required according to specific noise reduction into
Row regulation.The shape perforated on the outer layer perforated pipe 4 or internal layer perforated pipe 6 is not limited to circular hole, can also be other forms
Hole, crack structure.
Helical pitch, thickness, the rotation direction of the flow deflector 3 of the screw type can be according to the axial cooling fans or axle stream wind serviced
The air pressure air flow requirement of machine is adjusted.
Fig. 3 is the scheme of installation of the silencer of the present invention, as illustrated, silencer is installed on axial cooling fan
When, the center tube end plate 8 of silencer is contacted with the fan electromotor surface of axial cooling fan 9, passes through the surrounding of mounting plate 7
Mounting hole realize and the connection of axial cooling fan 9.Silencer can both be used in air inlet (such as Fig. 3 of axial cooling fan
As shown), can also be used in the exhaust outlet of axial cooling fan.When the air inlet of silencer and axial cooling fan is close
During contact, air inlet or exhaust section 2 on the silencer are used as air inlet section, i.e., extraneous gas is worn by air inlet or exhaust section 2
Enter axial cooling fan after crossing silencer；When the exhaust outlet of silencer and axial cooling fan is in close contact, the silencer
On air inlet or exhaust section 2 uses as exhaust section, i.e., extraneous gas passes through silencer after being discharged from axial cooling fan, finally
By being discharged after air inlet or exhaust section 2.
In the present invention, the flow deflector of used screw type can increase silencing channel length, suppress the outside spoke of sound
Penetrate, strengthen soundproof effect, while can also offset fan rotate caused by eddy flow, make air outlet velocity more uniform and stable.
In the present invention, air inlet or exhaust section using airflow design and coordinate the bulb at the top of internal layer perforated pipe, make to lead to
It is more steady to cross the air-flow of silencer, can effectively reduce regenerated noise.
In the present invention, used outer layer perforated pipe or internal layer perforated pipe, and their internal sound absorption materials filled
Material can effectively reduce the radiated noise of fan.
Generally speaking, silencer of the invention has the characteristics that small volume, flow resistance are low, noise reduction is big, can modular arrangement.
By laboratory test and in-site measurement, present invention is more particularly directed towards high rotating speed, high blast, strong noise radiator fan, its noise reduction effect
Fruit is more excellent, can greatly improve working environment.
Here is that the silencer of the present invention is used for the laboratory test results comparative example of San Ace120 type fans：
Fan silencer is used as air inlet, is followed by 500mm straight lengths, is put into muffling air duct test, and corresponding test result is：
Table 1
| Numbering | Noise sound | Distance of the measuring point apart from silencer | The angle of measuring point and silencer axis |
| 160425 001 | 74.0dBA | 0.5m | 45° |
| 160425 002 | 74.7dBA | 0.5m | 45° |
| 160425 003 | 72.5dBA | 1m | 45° |
After removing air inlet silencer, other states are constant, and corresponding test result is：
Table 2
| Numbering | Noise sound | Distance of the measuring point apart from silencer | The angle of measuring point and silencer axis |
| 160425 004 | 90.8dBA | 0.5m | 45° |
| 160425 005 | 90.8dBA | 0.5m | 45° |
| 160425 006 | 87.6dBA | 1m | 45° |
The comparison of test result is it can be found that the silencer of the present invention has good test effect in above-mentioned two form
Fruit.
It should be noted last that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those within the art that, to the technical side of the present invention
Case is modified or equivalent substitution, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right among.
Claims (6)
- A kind of 1. axial cooling fan silencer, it is characterised in that including：Muffler shell (1), air inlet or exhaust section (2), lead Flow (3), outer layer perforated pipe (4), bulb (5), internal layer perforated pipe (6), mounting plate (7), center tube end plate (8)；Wherein,The muffler shell (1) is the shell-like structure of inner hollow and two-phase opposite open, in the muffler shell (1) Mounting plate (7) is installed, the center position of the mounting plate (7) is provided with circular hole on one opening surface；The noise elimination The centre bit of the air inlet or exhaust section (2), the air inlet or exhaust section (2) is installed on another opening surface of device shell (1) The place of putting is provided with circular hole, and the surrounding of the circular hole is then into streamlined；Uniform sound-absorbing hole on the outer layer perforated pipe (4), it is positioned at described The inside of muffler shell (1), the outer layer perforated pipe (4) pass through the mounting plate (7) and the muffler shell (1) Connection, sound-absorbing material is filled between the outer layer perforated pipe (4) and muffler shell (1)；On the internal layer perforated pipe (6) Cloth sound-absorbing hole, it is located at the inside of the muffler shell (1), is connected by the flow deflector (3) with outer layer perforated pipe (4), The inside of the internal layer perforated pipe (6) is filled with sound-absorbing material, and it is provided with central tube on one end of mounting plate (7) Bottom plate (8), it is provided with bulb (5) on the other end of the air inlet or exhaust section (2)；The flow deflector (3) is into spiral Type.
- 2. axial cooling fan silencer according to claim 1, it is characterised in that the outer layer perforated pipe (4) it is interior Footpath matches with the axial cooling fan or the fan blade external diameter of axial flow blower to be serviced.
- 3. axial cooling fan silencer according to claim 1, it is characterised in that the internal layer perforated pipe (6) it is interior Footpath matches with the axial cooling fan or the fan electromotor external diameter of axial flow blower to be serviced.
- 4. axial cooling fan silencer according to claim 1, it is characterised in that the flow deflector (3) of the screw type Helical pitch, thickness, rotation direction be adjusted according to the air pressure air flow requirement of the axial cooling fan or axial flow blower that are serviced.
- 5. axial cooling fan silencer according to claim 1, it is characterised in that the outer layer perforated pipe (4) or interior The aperture of sound-absorbing hole on layer perforated pipe (6), punching rate are adjusted according to the requirement of specific noise reduction.
- 6. axial cooling fan silencer according to claim 1, it is characterised in that the outer layer perforated pipe (4) or interior Sound-absorbing hole on layer perforated pipe (6) is shaped as circular hole, or the hole of other forms, crack structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364973.2A CN107435664A (en) | 2016-05-27 | 2016-05-27 | A kind of axial cooling fan silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364973.2A CN107435664A (en) | 2016-05-27 | 2016-05-27 | A kind of axial cooling fan silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107435664A true CN107435664A (en) | 2017-12-05 |
Family
ID=60453725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610364973.2A Pending CN107435664A (en) | 2016-05-27 | 2016-05-27 | A kind of axial cooling fan silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107435664A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630442A (en) * | 2019-01-28 | 2019-04-16 | 东莞市鑫恩贝丝五金科技有限公司 | A kind of blower motor frame |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2066494U (en) * | 1989-12-21 | 1990-11-28 | 山东矿业学院 | Local silencer for mining |
| CN2363065Y (en) * | 1999-01-19 | 2000-02-09 | 邝勇兴 | Multi-way rotary wing type combined noise silencer |
| CN2567385Y (en) * | 2002-08-30 | 2003-08-20 | 天津市通风机厂 | Pressure return type intake noise silencer |
| WO2011015680A1 (en) * | 2009-07-29 | 2011-02-10 | Soler & Palau Research, S.L.U. | Sound-proofed helicocentrifugal fan |
| CN204458553U (en) * | 2015-01-09 | 2015-07-08 | 国家电网公司 | A kind of Multifunctional pneumatic power reclaiming type ventilation silencer |
-
2016
- 2016-05-27 CN CN201610364973.2A patent/CN107435664A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2066494U (en) * | 1989-12-21 | 1990-11-28 | 山东矿业学院 | Local silencer for mining |
| CN2363065Y (en) * | 1999-01-19 | 2000-02-09 | 邝勇兴 | Multi-way rotary wing type combined noise silencer |
| CN2567385Y (en) * | 2002-08-30 | 2003-08-20 | 天津市通风机厂 | Pressure return type intake noise silencer |
| WO2011015680A1 (en) * | 2009-07-29 | 2011-02-10 | Soler & Palau Research, S.L.U. | Sound-proofed helicocentrifugal fan |
| CN204458553U (en) * | 2015-01-09 | 2015-07-08 | 国家电网公司 | A kind of Multifunctional pneumatic power reclaiming type ventilation silencer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630442A (en) * | 2019-01-28 | 2019-04-16 | 东莞市鑫恩贝丝五金科技有限公司 | A kind of blower motor frame |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171205 |