CN107575420A - For blower fan noise reduction method and can be blower fan noise reduction device - Google Patents
For blower fan noise reduction method and can be blower fan noise reduction device Download PDFInfo
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- CN107575420A CN107575420A CN201711023121.8A CN201711023121A CN107575420A CN 107575420 A CN107575420 A CN 107575420A CN 201711023121 A CN201711023121 A CN 201711023121A CN 107575420 A CN107575420 A CN 107575420A
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- sound
- absorbing material
- blower fan
- air outlet
- noise
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- 230000009467 reduction Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000011358 absorbing material Substances 0.000 claims abstract description 63
- 239000012814 acoustic material Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims description 31
- 230000001681 protective effect Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 5
- 239000011888 foil Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229920000877 Melamine resin Polymers 0.000 description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 241000219146 Gossypium Species 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 239000011094 fiberboard Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
Abstract
This application discloses the method for blower fan noise reduction and can be blower fan noise reduction device.Wherein, an embodiment of this method includes：Acoustic material is set close to air inlet one end in the internal side of shell wall and the casing for housing blower fan, to separate the noise that can be spread out of during fan operation by chassis sidewall and casing close to air inlet one end；Air outlet one end sets sound-absorbing material in casing, to absorb the noise that can be spread out of during fan operation by air outlet.The embodiment effectively can carry out noise reduction to blower fan.
Description
Technical field
The application is related to blower fan applied technical field, more particularly to be blower fan noise reduction method and can be blower fan noise reduction dress
Put.
Background technology
Blower fan is by the mechanical energy of input, improves gas pressure and supplies gas side by side the machinery of body.Usually said blower fan example
Ventilation blower, air blower, wind-driven generator etc. can such as be included.Blower fan can be widely applied to following field：Factory, mine, tunnel
Ventilation, dust discharge and the cooling of road, cooling tower, vehicle, ship and building etc.；The ventilation of boiler and industrial furnace and air inducing；It is empty
Cooling and ventilation in gas adjustment equipment and domestic electric appliance；The drying of cereal and select and recommend, wind-tunnel wind regime and aircushion vehicle fill
Gas and propulsion etc..
Blower fan because of vibration due to by mechanical energy dispatch gas, noise can be produced in running.In some cases, example
When being used for domestic air adjustment equipment such as blower fan, excessive noise certainly will influence the normal life of user.Therefore, it is necessary to blower fan
Carry out noise reduction process.
The content of the invention
The purpose of the application be to propose it is a kind of it is improved be the method for blower fan noise reduction and can be blower fan noise reduction device, come
Solves the technical problem that background section above is mentioned.
In a first aspect, the embodiment of the present application provides a kind of method for blower fan noise reduction, this method includes：For housing
Acoustic material is set close to air inlet one end in the internal side of shell wall and the casing of blower fan, can during fan operation to separate
The noise spread out of by chassis sidewall and casing close to air inlet one end；Air outlet one end sets sound-absorbing material in casing, with
Absorb the noise that can be spread out of during fan operation by air outlet.
In certain embodiments, the thickness of sound-absorbing material, internal side of shell wall acoustic material height, the thickness of acoustic material
Degree determines by the following method respectively：Parameter to be determined is selected, wherein, parameter to be determined is the thickness of the sound-absorbing material, machine
The height of the sound-absorbing material of shell madial wall, the acoustic material thickness in any one；Other specification is defined to fixed value,
Change the value of parameter to be determined according to preset rules；The noise decrement of correspondence position when detecting the value change of parameter to be determined；
It is less than predetermined threshold value in response to noise decrement, parameter to be determined is determined according to the value of previous parameter to be determined.
In certain embodiments, this method also includes：Set at least on the sound-absorbing material that shell air outlet one end is set
One hole, gas smoothly flows out from the air outlet during ensureing fan operation.
In certain embodiments, this method also includes：Sound-absorbing material is also provided with shell air inlet one end.
In certain embodiments, this method also includes：The sound-absorbing of shell air inlet one end setting is wrapped in protective materials
On material.
Second aspect, present invention also provides a kind of device for blower fan noise reduction, the device includes：Casing, for holding
Put blower fan；Acoustic material, located at internal side of shell wall and the casing close to air inlet one end, for during separating fan operation
The noise that can be spread out of by chassis sidewall and casing close to air inlet one end；Sound-absorbing material, located at shell air outlet one end, it is used for
Absorb the noise that can be spread out of during fan operation by air outlet.
In certain embodiments, the sound-absorbing material that shell air outlet one end is set is provided with least one hole, to ensure
Gas smoothly flows out from air outlet during fan operation.
In certain embodiments, it is also equipped with sound-absorbing material in shell air inlet one end.
In certain embodiments, also it is enclosed with protective materials on the sound-absorbing material that shell air inlet one end is set.
In certain embodiments, above-mentioned protective materials is foil.
Method for blower fan noise reduction that the application provides and can be blower fan noise reduction device, by for housing blower fan
Acoustic material is set close to air inlet one end in internal side of shell wall and casing, air outlet one end sets sound-absorbing material in casing,
It can be made an uproar during can separating fan operation due to acoustic material by chassis sidewall and casing close to what air inlet one end was spread out of
Sound, sound-absorbing material can absorb the noise that can be spread out of during fan operation by air outlet, so as to effectively enter to blower fan
Row noise reduction.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 a and Fig. 1 b are the structural representations according to one embodiment of the device for blower fan noise reduction of the application；
Fig. 2 be the device for blower fan noise reduction shown in Fig. 1 a and Fig. 1 b one embodiment in providing holes on sound-absorbing material
The schematic diagram in hole；
Fig. 3 is air inlet in casing in one embodiment in the device for blower fan noise reduction shown in Fig. 1 a and Fig. 1 b
It is provided with the structural representation of sound-absorbing material；
Fig. 4 is that the embodiment of the device for blower fan noise reduction of the embodiment of the present application is applied to the schematic diagram of VMC；
Fig. 5 is the flow chart according to one embodiment of the method for blower fan noise reduction of the application.
Embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Be easy to describe, illustrate only in accompanying drawing to about the related part of invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 a and Fig. 1 b show the device 100 for blower fan noise reduction of one embodiment according to the application.
As shown in Figure 1a, device 100 can include casing 101, air inlet 103 and air outlet 104.Wherein：Casing 101 can
For housing blower fan 102；Casing 101 is provided with air inlet 103 and air outlet 104, for during fan operation air from
Air inlet 103 enters casing and flowed out from air outlet 104.Air inlet 103 and air outlet 104 can be located at the both ends of casing 101, also may be used
Located at the same side of casing 101, according to actual conditions, blower fan 102 and air duct set difference, and specific set-up mode please join
Prior art is examined, due to not being present invention point, will not be repeated here.In the present embodiment, air outlet 104 can be located at machine
The both ends of shell 101, air inlet 103 are located on the chassis sidewall of close one end relative with air outlet 104.What deserves to be explained is go out
Air port 104 can be the combination of an opening or multiple openings.Here opening can be variously-shaped.Such as go out
Air port 104 can include two row circular holes.
Fig. 1 b are referred to, in order to illustrate more clearly of the denoising structure of the present embodiment, Fig. 1 b show Fig. 1 a device 100
Vertical section.As shown in Figure 1 b, device 100 includes acoustic material 105, located at the madial wall of casing 101 and casing 101 close to entering
, can be by the side wall of casing 101 and close to the one end of air inlet 103 in the running of blower fan 102 for separating on the inside of the one end of air port 103
The noise of outflow.Also include sound-absorbing material 106 in device 100, located at the one end of shell air outlet 104, transported for absorbing blower fan 102
The noise that can be spread out of during row by air outlet 104.It is appreciated that typically there is pipeline to connect with casing 101 at air inlet 103
It is logical, it is relatively closed space, and air outlet 104 is then that air is opened wide, and can not completely cut off noise by acoustic material, therefore
Filled using sound-absorbing material 106.
Wherein, acoustic material can be any material that can be used for blocking noise.Such as it can include but is not limited to：It is solid
Fragment of brick, reinforced concrete wall, plank, plasterboard, iron plate, deadening felt, fiberboard etc..In the optional implementation of the present embodiment
In, it with rubber, high polymer material etc. be deadening felt made of primary raw material that acoustic material 105, which can be, and it is with necessarily soft
Property high density coiled material, the inwall of casing 101 can be attached to, separate the noise inside casing 101.
Sound-absorbing material is mostly loose porous material, such as mineral wool, blanket, and its sound absorbing mechanism is that sound wave gos deep into material
Hole, and hole is mostly the internal open pore to interpenetrate, after sound wave is entered, it may occur that reflection, so folding by sound wave
After adding, sound will diminish.In the present embodiment, sound-absorbing material 106 can for example include but is not limited to melamine foamed plastic, polyester
Fiber acoustical cotton etc..Those skilled in the art can select sound-absorbing material according to actual conditions.For example, it is assumed that the three of 20CM thickness
Poly cyanamid foam can reduce air-out one's intention as revealed in what one says and make an uproar 6 decibels or so, and air-out can be probably reduced using the thick polyester fiber acoustical cottons of 20CM
Mouthful 5 decibels or so of noise, then for the blower fan noise reduction available for the VMC for improving indoor environment etc, can use effect compared with
Good melamine foamed plastic.
In some optional implementations of the present embodiment, as shown in Fig. 2 the sound-absorbing that the one end of shell air outlet 104 is set
Material 106 is provided with least one hole 1061, with ensure blower fan 102 run when gas smoothly flowed out from air outlet 104.Its
In, the shapes and sizes of hole 1061 can be with the shape of air outlet 104 with the same size, can also be inconsistent, the application couple
This is not limited.
In some optional implementations of the present embodiment, if as shown in figure 3, the noise at air inlet 103 is larger, machine
Shell air inlet one end can also be provided with sound-absorbing material 1031.In some implementations, the sound-absorbing set in shell air inlet one end
Protective materials is can be coated with material 1031, during preventing that blower fan from working long hours, the dust in air blocks sound absorber
The hole of material.Here, protective materials can use the material of relatively thin material, noise and air is all penetrated readily through.Alternatively, prevent
Protective material can be foil, i.e., very thin sheet metal, such as aluminium foil, and maximum gauge is 0.2 millimeter.
In some optional implementations of the present embodiment, thickness, the acoustic material of internal side of shell wall of sound-absorbing material 106
105 height, the thickness of acoustic material 105 can determine by the following method respectively：Parameter to be determined is selected, wherein, treat really
It is any one in the thickness of sound-absorbing material, the height of sound-absorbing material of internal side of shell wall, the thickness of acoustic material to determine parameter；Will
Other specification is defined to fixed value, changes the value of parameter to be determined according to preset rules；When detecting the value change of parameter to be determined
The noise decrement of correspondence position；It is less than predetermined threshold value in response to noise decrement, it is true according to the value of previous parameter to be determined
Fixed parameter to be determined.
For example, the thickness of selection sound-absorbing material 106 is as parameter to be determined, the sound-absorbing material 105 of holding internal side of shell wall
Height, the thickness of acoustic material 105 be fixed value, according to preset rules (such as be incremented by 1 centimetre), change sound-absorbing material 106
Thickness value, the noise decrement when thickness value of detection sound-absorbing material 106 changes at air outlet 104 (such as once subtracts than preceding
Few decibels)；It is less than predetermined threshold value (such as 1 decibel) in response to noise decrement, according to the thickness of previous sound-absorbing material 106
Value determines the thickness of sound-absorbing material 106.For example, the thickness value of previous sound-absorbing material 106 is defined as sound-absorbing material 106
Thickness.
Refer to Fig. 4.Fig. 4 shows that the embodiment of the device for blower fan noise reduction of the embodiment of the present application is applied to fresh air
The schematic diagram of system 400.In VMC 400, in the casing 401 for housing blower fan 402, suction is provided with air outlet 404
Sound material 406, in the both sides of blower fan 402, the first filter core 408 is provided with close to the side of air inlet 403, is set close to the side of air outlet 404
There is the second filter core 407, to reduce air by noise caused by the first filter core 408 and the second filter core 407, the inner side of casing 401
The acoustic material 405 of wall will ensure that the second filter core 407 can be surrounded.Alternatively, acoustic material 405 connects with sound-absorbing material 406.
With continued reference to Fig. 5, Fig. 5 shows the flow 500 of one embodiment of the method for blower fan noise reduction of the application.Should
Flow 500 comprises the following steps：
Step 501, acoustic material is set close to air inlet one end in the internal side of shell wall and casing for housing blower fan.
It is appreciated that blower fan can be housed by casing, air inlet and air outlet can be provided with casing, so that blower fan is transported
Air enters casing from air inlet and flowed out from air outlet during row.In the present embodiment, can be first for housing blower fan
Internal side of shell wall and casing in close to air inlet one end, acoustic material is set, can pass through casing during fan operation to separate
The noise that side wall and casing are spread out of close to air inlet one end.In practice, casing can be first prepared, then in internal side of shell wall and machine
Acoustic material is set close to air inlet one end in shell, can also be first in the relevant position of respective material during casing is prepared
Acoustic material is set, then prepares casing, the application is not limited this.
Here acoustic material can for example include but is not limited to：Solid fragment of brick, reinforced concrete wall, plank, plasterboard,
Iron plate, deadening felt, fiberboard etc..In the optional implementation of the present embodiment, acoustic material can be with rubber, macromolecule
Material etc. is deadening felt made of primary raw material, and it is the high density coiled material with certain flexibility, can be attached to the inwall of casing, every
The noise of disconnected casing internal.
Step 202, air outlet one end sets sound-absorbing material in casing.
In the present embodiment, sound-absorbing material can also be set for air outlet one end in casing, to absorb fan operation process
In can pass through air outlet spread out of noise.It is appreciated that air inlet typically has pipeline to be connected with casing, it is relatively closed sky
Between, and air outlet is then that air is opened wide, and can not completely cut off noise by acoustic material, therefore can be filled out using sound-absorbing material
Fill.
Here sound-absorbing material can for example include but is not limited to melamine foamed plastic, polyester fiber acoustical cotton etc..This
Art personnel can select sound-absorbing material according to actual conditions.It is used to change for example, choosing the thick melamine foamed plastics of 20CM
Blower fan noise reduction of the VMC of kind indoor environment etc, etc..
In some optional implementations of the present embodiment, the thickness of sound-absorbing material, the acoustic material of internal side of shell wall
Highly, the thickness of acoustic material can determine by the following method respectively：Parameter to be determined is selected, wherein, parameter to be determined is
Any one in the thickness of sound-absorbing material, the height of sound-absorbing material of internal side of shell wall, the thickness of acoustic material；By other specification
Fixed value is defined to, changes the value of parameter to be determined according to preset rules；Correspondence position when detecting the value change of parameter to be determined
Noise decrement；It is less than predetermined threshold value in response to noise decrement, is determined according to the value of previous parameter to be determined to be determined
Parameter.
By taking sound-absorbing material as an example, it will be understood by those skilled in the art that in the range of certain thickness, noise is inhaled with top
The thickness of sound material increases and reduced, but after sound-absorbing material thickness reaches a maximum, noise is substantially just without change.
Therefore, we can determine the thickness of acoustic material and height, obtain the maximum by testing, be defined as the suction to be set
Sound material thickness.After this maximum is found, it is believed that now noise reduction most short slab has not been air outlet, reattempts increase
The height or thickness of acoustic material, see whether effectively reduce noise, if effectively, illustrating that most short slab now has been looked for
Arrive.For most short slab, according to the height or thickness that the acoustic material for effectively reducing noise is found with sound-absorbing material identical method
The maximum of degree, it is defined as the sound-absorbing material thickness to be set.
In some optional implementations of the present embodiment, step 202 can also further include：The air outlet in casing
At least one hole is set on the sound-absorbing material that one end is set, gas smoothly flows from the air outlet during ensureing fan operation
Go out.Wherein, according to actual conditions, at least one hole can be set on sound-absorbing material in advance, then by provided with hole
Sound-absorbing material is arranged on air outlet one end in casing, sound-absorbing material first can also be arranged on into air outlet one end in casing, then
Hole is set above sound-absorbing material.The shapes and sizes of at least one hole can with the shape of air outlet with the same size,
Can also be inconsistent, the application is not limited this.
Should be blower fan noise reduction if the noise of air inlet is larger in some optional implementations of the present embodiment
Method can also include：Sound-absorbing material is also provided with shell air inlet one end.In some implementations, protective materials bag can also be used
It is rolled on the sound-absorbing material of shell air inlet one end setting, during preventing that blower fan from working long hours, the dust in air, which blocks, to be inhaled
The hole of sound material.Here, protective materials can use the material of relatively thin material, noise and air is all penetrated readily through.It is optional
Ground, protective materials can be foil, i.e., very thin sheet metal, such as aluminium foil, and maximum gauge is 0.2 millimeter.
What deserves to be explained is the device that can be blower fan noise reduction is the device by being obtained for the method for blower fan noise reduction, thus,
Above with respect to can be blower fan noise reduction device describe feature with for be blower fan noise reduction method description operation it is mutually corresponding,
And be mutually adapted, it will not be repeated here.
Flow chart and block diagram in accompanying drawing, it is illustrated that realized according to the possibility of the device of the various embodiments of the application, method
Function and operation.At this point, each square frame in flow chart or block diagram can represent a module, program segment or code
A part, the part of the module, program segment or code include it is one or more be used to realizing as defined in logic function can
Execute instruction.It should also be noted that at some as in the realization replaced, the function of being marked in square frame can also be with different from attached
The order marked in figure occurs.For example, two square frames succeedingly represented can essentially perform substantially in parallel, they have
When can also perform in the opposite order, this is depending on involved function.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology that the particular combination of above-mentioned technical characteristic forms
Scheme, while should also cover in the case where not departing from foregoing invention design, carried out by above-mentioned technical characteristic or its equivalent feature
The other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (10)
- A kind of 1. method for blower fan noise reduction, it is characterised in that methods described includes：Acoustic material is set close to air inlet one end in the internal side of shell wall and the casing for housing blower fan, to separate wind The noise that can be spread out of in machine running by chassis sidewall and casing close to air inlet one end；Air outlet one end sets sound-absorbing material in the casing, to absorb what can be spread out of by air outlet during fan operation Noise.
- 2. according to the method for claim 1, it is characterised in that the sound insulation of the thickness, internal side of shell wall of the sound-absorbing material The height of material, the thickness of the acoustic material determine by the following method respectively：Parameter to be determined is selected, wherein, parameter to be determined is the thickness of the sound-absorbing material, the sound-absorbing material of internal side of shell wall Highly, any one in the thickness of the acoustic material；Other specification is defined to fixed value, changes the value of parameter to be determined according to preset rules；The noise decrement of correspondence position when detecting the value change of parameter to be determined；It is less than predetermined threshold value in response to noise decrement, parameter to be determined is determined according to the value of previous parameter to be determined.
- 3. according to the method for claim 1, it is characterised in that methods described also includes：At least one hole is set on the sound-absorbing material that shell air outlet one end is set, gas is from institute during ensureing fan operation Air outlet is stated smoothly to flow out.
- 4. according to the method any one of claim 1-3, it is characterised in that methods described also includes：Sound-absorbing material is also provided with shell air inlet one end.
- 5. according to the method for claim 4, it is characterised in that methods described also includes：It is wrapped in protective materials on the sound-absorbing material of shell air inlet one end setting.
- 6. a kind of device for blower fan noise reduction, it is characterised in that described device includes：Casing, for housing blower fan；Acoustic material, can during fan operation for separating located at internal side of shell wall and the casing close to air inlet one end The noise spread out of by chassis sidewall and casing close to air inlet one end；Sound-absorbing material, located at described shell air outlet one end, for absorbing what can be spread out of by air outlet during fan operation Noise.
- 7. device according to claim 6, it is characterised in that：The sound-absorbing material that shell air outlet one end is set is provided with least one hole, and gas is from described during ensureing fan operation Air outlet smoothly flows out.
- 8. the device according to claim 6 or 7, it is characterised in that：Sound-absorbing material is also equipped with shell air inlet one end.
- 9. device according to claim 8, it is characterised in that：Protective materials is also enclosed with the sound-absorbing material that shell air inlet one end is set.
- 10. device according to claim 9, it is characterised in that：The protective materials is foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711023121.8A CN107575420B (en) | 2017-10-25 | 2017-10-25 | Method for reducing noise of fan and device capable of reducing noise of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711023121.8A CN107575420B (en) | 2017-10-25 | 2017-10-25 | Method for reducing noise of fan and device capable of reducing noise of fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107575420A true CN107575420A (en) | 2018-01-12 |
| CN107575420B CN107575420B (en) | 2023-12-19 |
Family
ID=61040974
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711023121.8A Active CN107575420B (en) | 2017-10-25 | 2017-10-25 | Method for reducing noise of fan and device capable of reducing noise of fan |
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| CN (1) | CN107575420B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005351205A (en) * | 2004-06-11 | 2005-12-22 | Fulta Electric Machinery Co Ltd | Low noise device for blower |
| CN102305220A (en) * | 2011-08-16 | 2012-01-04 | 江西维特科技有限公司 | Low-noise blade-free fan |
| CN102926476A (en) * | 2012-11-30 | 2013-02-13 | 王荷琴 | Sound insulation board |
| CN203756613U (en) * | 2014-03-12 | 2014-08-06 | 陈玉沛 | Sound absorption device of draught fan |
| CN204851710U (en) * | 2015-08-13 | 2015-12-09 | 常州市尼尔司机械有限公司 | Air -blower of making an uproar falls |
| CN204877996U (en) * | 2015-07-15 | 2015-12-16 | 黄其江 | Can reduce air -blower of noise and vibrations |
| CN204961404U (en) * | 2015-09-30 | 2016-01-13 | 界首市鑫洋机电有限公司 | Low -noise centrifugal fan |
-
2017
- 2017-10-25 CN CN201711023121.8A patent/CN107575420B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005351205A (en) * | 2004-06-11 | 2005-12-22 | Fulta Electric Machinery Co Ltd | Low noise device for blower |
| CN102305220A (en) * | 2011-08-16 | 2012-01-04 | 江西维特科技有限公司 | Low-noise blade-free fan |
| CN102926476A (en) * | 2012-11-30 | 2013-02-13 | 王荷琴 | Sound insulation board |
| CN203756613U (en) * | 2014-03-12 | 2014-08-06 | 陈玉沛 | Sound absorption device of draught fan |
| CN204877996U (en) * | 2015-07-15 | 2015-12-16 | 黄其江 | Can reduce air -blower of noise and vibrations |
| CN204851710U (en) * | 2015-08-13 | 2015-12-09 | 常州市尼尔司机械有限公司 | Air -blower of making an uproar falls |
| CN204961404U (en) * | 2015-09-30 | 2016-01-13 | 界首市鑫洋机电有限公司 | Low -noise centrifugal fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107575420B (en) | 2023-12-19 |
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