CN103089704B - Fan component and the electrical equipment with this fan component - Google Patents
Fan component and the electrical equipment with this fan component Download PDFInfo
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- CN103089704B CN103089704B CN201110358374.7A CN201110358374A CN103089704B CN 103089704 B CN103089704 B CN 103089704B CN 201110358374 A CN201110358374 A CN 201110358374A CN 103089704 B CN103089704 B CN 103089704B
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- fan
- housing
- fan component
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Abstract
This application provides fan component and the electrical equipment with this fan component, to solve the problems, such as that in existing electrical equipment, noise is larger.This fan component includes：First housing, it limits the recess with opening；Noise reduces material, and it is arranged on the inner side of this first housing or outside；With, bladeless fan, it includes pedestal and fan head.This fan head is arranged in the recess of this first housing, and this pedestal is arranged on the outside of this first housing.This first housing is provided with multiple passages, this bladeless fan is used for by the first air stream being blown out by this fan head and produces negative pressure in the recess of this first housing, so that the second air stream passes through this noise to reduce material and the first housing and discharge from the opening of this recess.The application makes the noise of the second air stream reducing material by this noise be minimized or eliminate due to reducing material using noise, so that fan component and there is the electrical equipment of this fan component there is less noise.
Description
Technical field
The present invention relates to field of radiating, more particularly, to fan component and the electrical equipment with this fan group.
Background technology
The inside of electrical equipment generally includes heat generating components.Accordingly, it would be desirable to carry out to the electrical equipment including heat generating components
Radiating.Generally, the cooling system being adopted can be water cooling system or liquid cooling heat radiation system.Because water cooling system has
Simple, dependable performance, easy care and low cost and other advantages are installed, therefore it is adopted by most of electrical equipments.Certainly, air-cooled
Cooling system and liquid cooling heat radiation system also can be combined and use.
In medical imaging field, related electrical equipment includes nuclear magnetic resonance (magnetic resonance
Imaging, MRI) equipment, computer tomography (computer tomography, CT) equipment, x-ray imaging (X-ray
Imaging) equipment, Squares Framework for PET Image (positron emission tomography, PET) equipment etc..These
Above-mentioned water cooling system is generally included in medical imaging device.
As shown in figure 1, being a kind of schematic perspective view of existing CT equipment.This CT equipment 100 mainly includes frame 110 and sets
Put the sick bed 140 in this frame 110 front.This frame 110 defines machine frame hole 130 and include can be in this frame 110 inward turning
Turn to be scanned the rotating disk 120 checking.This rotating disk 120 rotates generally around this machine frame hole 130.Patient can lie in this sick bed
On 140 and be fed in this machine frame hole 130, to accept scanography.
In this frame 110, (especially on this rotating disk 120) generally includes heat generating components (for example, X-ray tube (X-ray
Tube), high tension generator (high voltage generator) etc.).Therefore, this CT equipment 100 employs wind-cooling heat dissipating system
System.This water cooling system include on the shell of this frame 110 the air inlet (not shown) of setting and air vent 150 and
The radiator fan (not shown) of setting on this heat generating components.This air inlet be generally arranged at the shell of this frame 110 bottom or
Sidepiece, this air vent 150 is generally arranged at the top of the shell of this frame 110.Certainly, this air vent 150 may also be arranged on this
The bottom of the shell of frame 110 or sidepiece.At this air inlet and air vent 150, fan is generally also installed.
Above-mentioned water cooling system is to improve its radiating effect, and the rotating speed that improve these fans or increase are usually taken
The method of number of fans.However, the increase of raising with rotation speed of the fan or number of fans, its interior noise also increases sharply,
Thus forming noise pollution.In addition, the frame for movement (such as bearing etc.) in equipment also can produce noise.These noises can be with sky
Air-flow spreads out of from this air vent.Certainly, noise can cause psychological and physiological negative effect to patient and doctor.
Therefore, it is necessary to offer is a kind of and overcoming the fan component of disadvantages mentioned above and there is electrically setting of this fan component
Standby.
Content of the invention
Noise in order to solve the problems, such as electrical equipment of the prior art is larger, and the present invention provides one kind can reduce noise
Fan component.
The present invention solves technical problem and be employed technical scheme comprise that a kind of fan component of offer, and this fan component includes：
First housing, it limits the recess with opening；Noise reduces material, and it is arranged on the inner side of this first housing or outside；With,
Bladeless fan (bladeless fan), it includes pedestal (base) and fan head (head).This fan head is arranged on this first housing
In recess, this pedestal is arranged on the outside of this first housing.This first housing is provided with multiple passages, and this bladeless fan is used for
Produce negative pressure by the first air stream being blown out by this fan head in the recess of this first housing, so that the second air flows through
Cross this noise to reduce material and the first housing and discharge from the opening of this recess.
According to a preferred aspect of the present invention, this fan component may also include the second housing being provided with multiple passages, and this
Two housings form receiving space with this first shell body, and this noise reduces material and is arranged in this receiving space, and this pedestal sets
Put the outside in this second housing.
According to a preferred aspect of the present invention, this first housing or the second housing can by metallic plate, wire netting, plastic wire, mould
Flitch or other materials are made.
According to a preferred aspect of the present invention, this first housing or the second housing can be electromagnetic shielding shell, thus having electricity
Magnetic screen function.
According to a preferred aspect of the present invention, this passage can be circular port, square opening or irregularly shaped hole.
According to a preferred aspect of the present invention, this noise reduces material can have fall for air-permeable foam, a plastics ball of string or other
The material of function of making an uproar.According to a preferred aspect of the present invention, this noise reduction material can carry electro-magnetic screen function.
According to a preferred aspect of the present invention, this noise reduction material can at least include the first noise reduction material layer and second
Noise reduces material layer, and this first noise reduces the wave absorption frequency band of material layer and the second noise reduces the sound wave suction of material layer
Receive frequency band different.
According to a preferred aspect of the present invention, this recess can be horn mouth (evase) shape.
According to a preferred aspect of the present invention, this second housing can have the profile of rounding off.
According to a preferred aspect of the present invention, this fan component may also include lid, this lid and this second housing and first
Housing forms this receiving space together.
According to a preferred aspect of the present invention, the direction of the first air stream of this fan head blowout can be with the side of the opening of this recess
To consistent.
According to a preferred aspect of the present invention, this first housing or the second housing with the direction of the opening parallel of this recess on
Section be circular or oval.
According to a preferred aspect of the present invention, this fan head cutting on the direction vertical with the first air stream that this fan head blows out
Face is circular, oval or irregular shape.
According to a preferred aspect of the present invention, this fan head is additionally provided with multiple vertical pieces, this vertical piece blows out parallel to this fan head
The first air stream direction.
According to a preferred aspect of the present invention, the quantity of this bladeless fan is one or more.
The present invention also provides a kind of electrical equipment, and it includes frame and above-mentioned fan component.The inside of this frame includes
Heat generating components, and the shell of this frame is provided with air inlet and air vent, and this fan component is arranged on this air vent or air intake
At mouthful.
According to a preferred aspect of the present invention, this electrical equipment can for MR imaging apparatus, computer tomography equipment,
X-ray imaging equipment, Squares Framework for PET Image equipment or other equipment needing radiating.
According to a preferred aspect of the present invention, this fan component can be fixed at this air vent or air inlet by securing member.
Compared to prior art, the fan component of the present invention and electrical equipment have the advantages that.The present invention adopts
Noise reduces material makes the noise of the air stream reducing material by this noise be minimized or eliminate, so that fan component tool
There is less noise.The pedestal being additionally, since bladeless fan is arranged on the outside of the first housing, the motor in this pedestal and/or
Noise produced by impeller also can be reduced material by this noise and reduce or elimination.Further, since the row of the electrical equipment of the present invention
It is provided with this fan component at QI KOU, when the air stream in this electrical equipment is passed through this fan component and is discharged, this air stream
Noise all can be reduced material by this noise and reduce or elimination.Even this fan component is arranged on the electrical equipment of the present invention
At air inlet, when this fan component is blown into, the noise of air stream also can be dropped the air stream outside this electrical equipment by this noise
Low material reduces or eliminates.
Further, when the first housing of above-mentioned fan component or the second housing are electromagnetic shielding shell, or on
When the noise stated reduces material with electro-magnetic screen function, the electrical equipment of the present invention can also be made to have excellent electromagnetic shielding
Characteristic.
In the following description to the drawings and specific embodiments, the thin of one or more embodiments of the invention will be illustrated
Section.From these descriptions, accompanying drawing and claim, the other features, objects and advantages of the present invention can be understood.
Brief description
Refer to accompanying drawing and the present invention is more specifically described by embodiment, wherein accompanying drawing is not drawn to scale,
In accompanying drawing：
Fig. 1 is a kind of schematic perspective view of existing CT equipment.
Fig. 2 is the schematic perspective view of the fan component according to the first embodiment of the present invention.
Fig. 3 is the schematic cross-section of the fan component shown in Fig. 2.
Fig. 4 is the working machine drawing of the fan component shown in Fig. 3.
Fig. 5 is the schematic perspective view of fan component according to the second embodiment of the present invention, lid not shown in it.
Fig. 6 is the schematic perspective view of fan component according to the third embodiment of the invention, lid not shown in it.
Fig. 7 is the schematic perspective view of fan component according to the fourth embodiment of the invention.
Fig. 8 is the floor map of fan component according to the fifth embodiment of the invention.
Fig. 9 is the floor map of noise reduction by one embodiment of material of the fan component according to the present invention.
Specific embodiment
The present invention is described in more detail below in conjunction with specific embodiment.Those skilled in the art should manage
Solution, these embodiments only list the specific embodiment of some present invention, to the present invention and its no any limit of protection domain
System.
Refer to Fig. 2 and Fig. 3, it illustrates the fan component 20 according to the first embodiment of the present invention.This fan component
20 include the first housing 21, the second housing 22, noise reduction material 24 and bladeless fan 25.
This first housing 21 is provided with multiple passages 211.This first housing 21 also defines recess 212, this recess 212
There is opening 213 (opening namely being limited by the top of this first housing 21).This second housing 22 also is provided with multiple ventilations
Hole 221.This second housing 22 and this first housing 21 form receiving space 29.This noise reduces material 24 and is arranged on this receiving sky
Between in 29.
Further, lid 23 may be provided at this first housing 21 and the top of the second housing 22, with this second housing
22 surround this receiving space 29 together with the first housing 21.Certainly, also can be by making the top of the second housing 22 and the first housing 21
End links together and saves this lid 23.This first housing 21 is alternatively referred to as inner shell, and this second housing 22 is alternatively referred to as
External shell.
This bladeless fan 25 includes pedestal 26 and fan 27.This fan 27 is arranged in the recess 212 of this first housing 21,
And this pedestal 26 is arranged on the outside (namely contrary with recess 212 side outside this) of this second housing 22.This pedestal
25 may include motor and by motor-driven impeller, in order to produce the first air stream by fan 27 ejection.This fan 27
There is shell 271 and define opening 273.This shell 271 has air vent 272.This bladeless fan 25 can be using on market
Existing product or design as desired.It is outside from fan that term " bladeless fan " herein refers to the first air stream
The fan using blade is not needed when release or ejection.
It is understood that the fan component of the present invention also may not include the second housing 22.Now, this noise reduces material
24 inner sides that may be provided at this first housing 21 or outside (namely contrary with recess 212 side outside this), and should
The pedestal 26 of bladeless fan 25 is arranged on the outside of this first housing 21, so that the noise that this pedestal 26 produces also can be by this noise
Reduce material 24 to reduce or eliminate.
Further, this first housing 21 or the second housing 22 can by metallic plate, wire netting, plastic wire, plastic plate or its
Its material is made；This first housing 21 or the second housing 22 can also be electromagnetic shielding shell, thus having electro-magnetic screen function；
Passage 211 and 221 on this first housing 21 and the second housing 22 can be circular port, square opening or irregularly shaped hole, etc.；
This noise reduces material 24 and can have material of decrease of noise functions etc. for air-permeable foam, a plastics ball of string or other；This noise reduces material
Material 24 also can carry electro-magnetic screen function；The recess 212 of this first housing 21 can be toroidal, to avoid because in recess 212
Negative pressure is excessive and produces noise；This second housing 22 can have the profile of rounding off, so that its neighbouring negative pressure is evenly distributed；
This first housing 21 or the second housing 22 section on the parallel direction of the opening 213 with this recess 212 can be for circular (as schemed
Shown in 2).
Please together with reference to Fig. 4, it is the working machine drawing of said fans assembly 20.During the work of this fan component 20, first
By the pedestal 26 of bladeless fan 25, its first neighbouring air stream 40 is sucked and produce the first sky in this bladeless fan 25
Air-flow 41, this first air stream 41 is ejected this opening 273 by this air vent 272 in the form of the first air stream 42.Should
First air stream 41 generally has higher speed.It is easily understood that this first air stream 42 will make this first housing 21
Negative pressure is produced, so that second air stream 50 in the second housing 22 outside sequentially passes through this second housing 22, noise in recess 212
Reduce material 24 and the first housing 21, and become the second air stream 51 that noise is reduced or eliminated.This second air stream 51
Subsequently discharged in the form of the second air stream 52 from the opening 213 of this recess 212.The flow of this second air stream 52 is the first sky
About 15 times of the flow of air-flow 42.By in Fig. 4 it can be seen that a part of second air stream 52 is discharged by opening 273.Excellent
Selection of land, the direction of the first air stream 42 of this fan 27 blowout and the direction of the opening 213 of this recess 212 are (that is, with this opening
The perpendicular direction of 213 planes being located) consistent, so that the discharge of these air streams is smooth.It is understood that in Fig. 4
Arrow represents these air streams and their flow direction.
By Fig. 2 to Fig. 4 as can be seen that this fan 27 is on the direction vertical with the first air stream 42 that this fan head blows out
Section can be circle.
Fig. 5 is the schematic perspective view of fan component according to the second embodiment of the present invention, lid not shown in it.Here
In embodiment, the first housing 61 of this fan component and the second housing 62 are in the opening with the recess being limited by the first housing 61
Section on (opening 213 referring in Fig. 3) parallel direction can be ellipse.In addition, the bladeless fan 64 of this fan component
Fan 65 section on the direction vertical with the air stream that this fan head blow out can also be oval.Also may be used on this fan 65
It is provided with the multiple vertical piece 66 in the direction of air stream parallel to this fan 65 blowout, so that the air stream of this fan head blowout is uniform
Distribution.
Fig. 6 is the schematic perspective view of fan component according to the third embodiment of the invention, lid not shown in it.Here
In embodiment, the first housing 71 of this fan component is put down in the opening with the recess being limited by the first housing 71 with the second housing 72
Section on the direction of row can be ellipse, and the fan 75 of the bladeless fan 74 of this fan component is in the sky blowing out with this fan head
Section on the vertical direction of air-flow can be irregular shape (for example, the shaped form of closure, imitative " 8 " shape etc.).
Fig. 7 is the schematic perspective view of fan component according to the fourth embodiment of the invention.In this embodiment, this fan
First housing 81 of assembly and the second housing 82 with the direction of the opening parallel of the recess being limited by the first housing 81 on cut
Face can be ellipse, and the fan 85 of the bladeless fan 84 of this fan component is in the side vertical with the air stream that this fan 85 blows out
Section upwards can be the ellipse without vertical piece.Lid 83 may be provided at this first housing 81 and the top of the second housing 82
End.
Fig. 8 is the floor map of fan component according to the fifth embodiment of the invention, which show this fan component
First housing 91 and the second housing 92 and two bladeless fans 94 (in Fig. 2, the quantity of the bladeless fan 94 of display is).
Certainly, as needed, the quantity of this bladeless fan 94 can be also more.
It is to be understood that except with regard to second embodiment to the 5th embodiment described in specific features in addition to, this is second real
The fan component applying example to the 5th embodiment may also include fan component identical further feature with first embodiment, and here is not
Describe in detail again.
Fig. 9 is the floor map of noise reduction by one embodiment of material of the fan component according to the present invention, its display
This noise reduces material and includes four noises and reduces material layers 241,242,243 and 244.Because the source of noise is different, institute
The frequency band of the noise producing also can be different.Therefore, in this embodiment, these noises are made to reduce material layer 241,242,243 and
244 wave absorption frequency band correspondence has multiple noises of different frequency bands, such that it is able to sufficiently reducing or abating the noise.When
Heat, as needed, noise reduces material and is alternatively other numbers of plies, such as two-layer, three layers or more than five layers.
In addition, electrical equipment according to an embodiment of the invention includes any one in said fans assembly.This electricity
Gas equipment also includes can frame.This machine frame inside includes heat generating components, and the shell of this frame is (for example, with reference to outer in Fig. 4
Shell 30) it is provided with air inlet and air vent, this fan component 20 is arranged at this air vent or air inlet.This electrical equipment can be
MR imaging apparatus, computer tomography equipment, x-ray imaging equipment, Squares Framework for PET Image equipment or other
Need the equipment of radiating.This fan component 20 can be fixed on this electrical equipment by securing member 28 (for example, screw or nut)
Exhaust ports.This securing member 28 may be provided on lid 23, or is arranged on the first housing 21 or the top of the second housing 22.
Compared to prior art, the fan component of the present invention and electrical equipment have the advantages that.The present invention adopts
Noise reduces material makes the noise of the air stream reducing material by this noise be minimized or eliminate, so that fan component tool
There is less noise.The pedestal being additionally, since bladeless fan is arranged on the outside of the first housing, the motor in this pedestal and/or
Noise produced by impeller also can be reduced material by this noise and reduce or elimination.Further, since the row of the electrical equipment of the present invention
It is provided with this fan component at QI KOU, when the air stream in this electrical equipment is passed through this fan component and is discharged, this air stream
Noise all can be reduced material by this noise and reduce or elimination.Even this fan component is arranged on the electrical equipment of the present invention
At air inlet, when this fan component is blown into, the noise of air stream also can be dropped the air stream outside this electrical equipment by this noise
Low material reduces or eliminates.Additionally, above-mentioned fan component and electrical equipment have good radiating effect.
Further, when the first housing of above-mentioned fan component or the second housing are electromagnetic shielding shell, or on
When the noise stated reduces material with electro-magnetic screen function, the electrical equipment of the present invention can also be made to have excellent electromagnetic shielding
Characteristic.
Describe the present invention to the above being for illustration only property, be not limited to the present invention.It should be pointed out that for
For those of ordinary skill in the art, the present invention can be made with some improvement, modification and deformation, but these improve, repair
Change and deform and be regarded as without departing from the spirit of the invention in the protection domain of the application.
Claims (22)
1. a kind of fan component, including：
First housing, it limits the recess with opening；
Noise reduces material, and it is arranged on the inner side of described first housing or outside；With
Bladeless fan, it includes pedestal and fan head, and described fan head is arranged in the recess of described first housing, described pedestal setting
Outside in described first housing；
Wherein, described first housing is provided with multiple passages, and described bladeless fan is used for by by the of described fan head blowout
One air stream and produce negative pressure in the recess of described first housing, so that the second air stream passes through described noise to reduce material
Discharge with the first housing and from the opening of described recess.
2. fan component according to claim 1 is it is characterised in that described fan component also includes being provided with multiple passages
The second housing, described second housing and described first shell body form receiving space, described noise reduce material be arranged on described
In receiving space, and described pedestal is arranged on the outside of described second housing.
3. fan component according to claim 1 is it is characterised in that described first housing is by metallic plate, wire netting, plastics
Net or plastic plate are made.
4. fan component according to claim 2 is it is characterised in that described second housing is by metallic plate, wire netting, plastics
Net or plastic plate are made.
5. fan component according to claim 1 is it is characterised in that described first housing is electromagnetic shielding shell.
6. fan component according to claim 2 is it is characterised in that described second housing is electromagnetic shielding shell.
7. fan component according to claim 1 and 2 it is characterised in that described passage be circular port or square opening or
Irregularly shaped hole.
8. fan component according to claim 1 and 2 it is characterised in that described noise reduce material be air-permeable foam or
A plastics ball of string.
9. fan component according to claim 1 and 2 carries electromagnetic shielding it is characterised in that described noise reduces material
Function.
10. fan component according to claim 1 and 2 at least includes first it is characterised in that described noise reduces material
Noise reduces material layer and the second noise reduces material layer, and described first noise reduces the wave absorption frequency band and second of material layer
The wave absorption frequency band that noise reduces material layer is different.
11. fan components according to claim 1 and 2 are it is characterised in that described recess is toroidal.
12. fan components according to claim 2 are it is characterised in that described second housing has the profile of rounding off.
13. fan components according to claim 2 it is characterised in that described fan component also includes lid, described lid
Form described receiving space together with described second housing and the first housing.
14. fan components according to claim 1 and 2 it is characterised in that described fan head blowout the first air stream side
To consistent with the direction of the opening of described recess.
15. fan components according to claim 1 are it is characterised in that described first housing is in the opening with described recess
Section on parallel direction is circular or oval.
16. fan components according to claim 2 are it is characterised in that described second housing is in the opening with described recess
Section on parallel direction is circular or oval.
17. fan components according to claim 1 and 2 are it is characterised in that described fan head is in the with described fan head blowout
Section on the vertical direction of one air stream is circular, oval or irregular shape.
18. fan components according to claim 1 and 2 it is characterised in that being additionally provided with multiple vertical pieces on described fan head,
The direction of the first air stream parallel to described fan head blowout for the described vertical piece.
19. fan components according to claim 1 and 2 are it is characterised in that the quantity of described bladeless fan is one or many
Individual.
A kind of 20. electrical equipments, it includes frame and the fan component according to any one of claim 1-16, wherein,
The inside of described frame includes heat generating components, and the shell of described frame is provided with air inlet and air vent, described fan group
Part is arranged at described air vent or air inlet.
21. electrical equipments according to claim 20 it is characterised in that described electrical equipment be MR imaging apparatus,
Computer tomography equipment, x-ray imaging equipment or Squares Framework for PET Image equipment.
22. electrical equipments according to claim 20 are it is characterised in that described fan component is fixed on institute by securing member
State exhaust ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110358374.7A CN103089704B (en) | 2011-10-31 | 2011-10-31 | Fan component and the electrical equipment with this fan component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110358374.7A CN103089704B (en) | 2011-10-31 | 2011-10-31 | Fan component and the electrical equipment with this fan component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103089704A CN103089704A (en) | 2013-05-08 |
| CN103089704B true CN103089704B (en) | 2017-03-01 |
Family
ID=48202687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110358374.7A Expired - Fee Related CN103089704B (en) | 2011-10-31 | 2011-10-31 | Fan component and the electrical equipment with this fan component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103089704B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438503B (en) * | 2016-11-15 | 2019-05-31 | 美的集团股份有限公司 | Pedestal and bladeless fan |
| JP6914766B2 (en) * | 2017-07-26 | 2021-08-04 | 日本電産コパル電子株式会社 | CPAP device |
| CN110477940A (en) * | 2018-05-15 | 2019-11-22 | 通用电气公司 | Detect bed and CT system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023764A1 (en) * | 1999-09-30 | 2001-04-05 | Kyodo-Allied Industries Ltd | Apparatus for minimising noise in a fan unit |
| CN2674162Y (en) * | 2003-12-29 | 2005-01-26 | 唐连树 | Low noise vantilation fan |
| EP1980755A2 (en) * | 2007-04-09 | 2008-10-15 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Noise reducing structure in fan device |
| CN101424279A (en) * | 2007-09-04 | 2009-05-06 | 戴森技术有限公司 | Fan |
| CN201786771U (en) * | 2010-09-17 | 2011-04-06 | 浠水县四方饲料有限公司 | Fan silencer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4276363B2 (en) * | 2000-07-31 | 2009-06-10 | 株式会社小松製作所 | Method for forming porous sound absorbing material used for noise reduction mechanism of fan device |
-
2011
- 2011-10-31 CN CN201110358374.7A patent/CN103089704B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023764A1 (en) * | 1999-09-30 | 2001-04-05 | Kyodo-Allied Industries Ltd | Apparatus for minimising noise in a fan unit |
| CN2674162Y (en) * | 2003-12-29 | 2005-01-26 | 唐连树 | Low noise vantilation fan |
| EP1980755A2 (en) * | 2007-04-09 | 2008-10-15 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Noise reducing structure in fan device |
| CN101424279A (en) * | 2007-09-04 | 2009-05-06 | 戴森技术有限公司 | Fan |
| CN201786771U (en) * | 2010-09-17 | 2011-04-06 | 浠水县四方饲料有限公司 | Fan silencer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103089704A (en) | 2013-05-08 |
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