CN204512004U - Fan noise cancellation element - Google Patents
Fan noise cancellation element Download PDFInfo
- Publication number
- CN204512004U CN204512004U CN201520116190.3U CN201520116190U CN204512004U CN 204512004 U CN204512004 U CN 204512004U CN 201520116190 U CN201520116190 U CN 201520116190U CN 204512004 U CN204512004 U CN 204512004U
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- Prior art keywords
- fan
- wind
- air
- flow
- guiding space
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- Expired - Fee Related
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- 241000883990 Flabellum Species 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000010361 irregular oscillation Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
A kind of fan noise cancellation element, coordinates a fan to use, and comprises a wind deflector unit around a wind-guiding space, and the regulation unit that is connected to this wind deflector unit.This wind-guiding space for guiding the air-flow of this fan, and has two openings.This regulation unit is connected to the position between the described opening of this wind deflector unit, and to be connected with this wind-guiding space around one and can to adjust the adjustment chamber of volume.When this fan turns, one first air-flow can be introduced into this wind-guiding space and enter this adjustment chamber again, and go back to this wind-guiding space to produce one second air-flow by this adjustment cavity reflection, the vibration wave mode of this second air-flow can mutually offset to abate the noise with the vibration wave mode of this first air-flow, and the volume size adjusting this adjustment chamber can change the vibration wave mode of this second air-flow.
Description
Technical field
The utility model relates to a kind of noise absorber, particularly relates to a kind of fan noise cancellation element.
Background technique
When fan running, easily form flow-disturbing at fan blade end, therefore make air and flabellum produce irregular oscillation and make a noise.In order to eliminate the noise that fan running sends, existing technology normally adopts the mode of the flow-disturbing destroying fan blade end to abate the noise.
Consulting Fig. 1, is TaiWan, China notification number No. 481437 noise reduction radiator fan that new patent discloses 1, comprises one around the fan seat 11 of a containing space 110, and one to be arranged in this containing space 110 and to have the fan body 12 in multiple flabellum portion 121.Wherein, this containing space 110 has an exhaust outlet 111, and this fan seat 11 has one around the internal face 112 of this containing space 110, and this internal face 112 is arranged at intervals with multiple groove 113.When this fan body 12 rotates and makes the air flowing in this containing space 110, the clearance vortex that described flabellum portion 121 produces, can produce eutralizing operation with the interior eddy current produced of described groove 113.Therefore, the end in described flabellum portion 121 not easily produces irregular oscillation because of flow-disturbing, therefore can reach the effect reducing noise.
Consulting Fig. 2, is the radiation fan 2 that TaiWan, China notification number M241515 new patent discloses, and comprises one around the shell block 21 of an installation space 20, and one is arranged at impeller group 22 in this installation space 20.This shell block 21 is equipped with multiple side direction air-vent 211, and when this impeller group 22 is rotated, the air-flow imported from described side direction air-vent 211 can be repealed by implication with the flow-disturbing producing noise, therefore this impeller group 22 not easily produces flow-disturbing, reduces noise whereby.
But, because aforesaid way is all destroy the flow-disturbing produced during fan turns or offset, therefore when the structure of design, destroy flow-disturbing, the kenel of various fan and rotation parameters must be coordinated to design, cannot the fan of all kenels of one size fits all.Moreover, even if produce and the described rightabout air-flow of flow-disturbing, be also difficult to make flabellum or air not produce any vibration completely, therefore cannot abate the noise completely.
Summary of the invention
The purpose of this utility model is that providing a kind of can coordinate the kenel of fan to carry out adjusting and the fan noise cancellation element abated the noise.
The utility model fan noise cancellation element, coordinates fan to use, and comprises a wind deflector unit, this wind deflector unit around one for guiding the wind-guiding space of the air-flow of this fan.
This wind-guiding space has the opening that two are positioned at two opposition sides, and this fan block is in one of them opening, and has an air intake and an outlet air end.This fan noise cancellation element also comprises a regulation unit.
This regulation unit is connected to the position between described opening, and to be connected with this wind-guiding space around one and can to adjust the adjustment chamber of volume.
When this fan turns, first air-flow can be introduced into this wind-guiding space and enter this adjustment chamber more together, and go back to this wind-guiding space to produce the second air-flow together by this adjustment cavity reflection, the vibration wave mode of this second air-flow can mutually offset to abate the noise with the vibration wave mode of this first air-flow.Adjust the volume size in this adjustment chamber, the vibration wave mode of this second air-flow can be changed, to coordinate the rotation situation of various types of fan, the noise produced when eliminating this fan turns.
The purpose of this utility model and solve its technical problem and also can be applied to the following technical measures to achieve further.
Preferably, aforementioned fan noise cancellation element, wherein, this regulation unit comprises a housing around this adjustment chamber, and at least one is arranged at the shim in this adjustment chamber with can changing position, this shim for separating this adjustment chamber, to adjust the volume size that this adjustment chamber is communicated with this wind-guiding space.
Preferably, aforementioned fan noise cancellation element, wherein, this housing has multiple interval and arranges and supply this shim to plug the slot of location.
Preferably, aforementioned fan noise cancellation element, wherein, the air intake of this fan is towards this wind-guiding space.
Preferably, aforementioned fan noise cancellation element, wherein, the outlet air end of this fan is towards this wind-guiding space.
Preferably, aforementioned fan noise cancellation element, wherein, this wind deflector unit is a guide duct.
The beneficial effects of the utility model are: the volume size repeatedly repeatedly adjusting the adjustment chamber of this regulation unit, the vibration wave mode of this second air-flow can be constantly made to change, when the vibration wave mode of this second air-flow and the vibration wave mode of this first air-flow can be repealed by implication, the then noise that produces of this fan, can be eliminated by offseting completely because of described vibration wave mode.
Accompanying drawing explanation
Fig. 1 is a stereogram, and TaiWan, China notification number No. 481437 noise reduction radiator fan that new patent discloses is described;
Fig. 2 is a stereogram, and the radiation fan that TaiWan, China notification number M241515 new patent discloses is described;
Fig. 3 is a stereogram, and an embodiment of the utility model fan noise cancellation element is described;
Fig. 4 and Fig. 5 is all schematic diagram, and air-flow flowing is in this embodiment described;
Fig. 6 is a three-dimensional exploded view, and a regulation unit of this embodiment is described; And
Fig. 7 is a mode chart, and the mode that this embodiment abates the noise is described.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
Consult Fig. 3, the embodiment of the utility model fan noise cancellation element 3, coordinate a fan 4 to use, and comprise one around the wind deflector unit 31 in a wind-guiding space 310, and the regulation unit 32 that is communicated with this wind-guiding space 310.Wherein, this wind deflector unit 31 is a guide duct in the present embodiment, as long as but this wind deflector unit 31 can around this wind-guiding space 310, and the guide duct do not disclosed with the present embodiment when reality is implemented is limited.
Consult Fig. 3 to Fig. 5, the wind-guiding space 310 of this wind deflector unit 31 for guiding the air-flow of this fan 4, and has the opening 311 that two are positioned at two opposition sides, and this fan 4 block is in one of them opening 311, and has air intake 41 and an outlet air end 42.Air-flow is blown into from the air intake 41 of this fan 4, and blows out from this outlet air end 42.Wherein, the installation direction of this fan 4, can as illustrated in fig. 4 with this air intake 41 towards this wind-guiding space 310, also can as illustrated in fig. 5 with this outlet air end 42 towards this wind-guiding space 310.
This regulation unit 32 is connected to the position between the described opening 311 of this wind deflector unit 31, and to be connected with this wind-guiding space 310 around one and can to adjust the adjustment chamber 320 of volume.This regulation unit 32 comprises one around the housing 321 in this adjustment chamber 320, and at least one shim 322 be arranged at changing position in this adjustment chamber 320.And this housing 321 has the setting of multiple interval and supplies this shim 322 to plug the slot 323 of location, as shown in Figure 6, when this shim 322 is inserted in described slot 323, the position that this shim 322 plugs can be changed, separate this adjustment chamber 320 in various different separation mode, and adjust the volume size that this adjustment chamber 320 is communicated with this wind-guiding space 310 whereby.In addition, when the volume in this adjustment chamber 320 is adjusted, also can use the shim 322 of more than two panels, to produce more kinds of different separation mode, this adjustment chamber 320 be carried out to the adjustment of more diversification.What illustrate is, adjust the mode in this adjustment chamber 320, the mode of not carrying out separating with this shim 322 of above-mentioned employing is limited, the mode of described slot 323 is coordinated by this shim 322, only that wherein one implements aspect, as long as the volume in this adjustment chamber 320 really can be adjusted, do not implement aspect with this and be limited.
Consult Fig. 4 and coordinate Fig. 6, when the installation direction of this fan 4 be with this air intake 41 towards this wind-guiding space 310 time, this fan 4 rotation can make one first air-flow A enter this wind-guiding space 310 from another opening 311 in contrast to this fan 4, a part of this first air-flow A can enter this adjustment chamber 320, and all the other are then blown out from the outlet air end 42 of this fan 4 by this fan 4.Enter this first air-flow of part A in this adjustment chamber 320, this wind-guiding space 310 can be reflected back to produce one second air-flow B by this adjustment chamber 320, the vibration wave mode of this second air-flow B can mutually offset to abate the noise with the vibration wave mode of this first air-flow A, and the volume size adjusting this adjustment chamber 320 can change the vibration wave mode of this second air-flow B, produce the vibration wave mode that can abate the noise to coordinate this fan 4.
Consult Fig. 5 and coordinate Fig. 6, when the installation direction of this fan 4 be with this outlet air end 42 towards this wind-guiding space 310 time, this fan 4 rotation can make one first air-flow A from entering this fan 4 with the opening 311 of this fan 4 homonymy, and blows out from the outlet air end 42 of this fan 4 and enter this wind-guiding space 310.This first air-flow A is by this fan 4 after entering this wind-guiding space 310, same meeting some enter this adjustment chamber 320, and be reflected back this wind-guiding space 310 to produce one second air-flow B by this adjustment chamber 320, the vibration wave mode of this second air-flow B can mutually offset to abate the noise with the vibration wave mode of this first air-flow A, and the volume size adjusting this adjustment chamber 320 can change the vibration wave mode of this second air-flow B.
Consult Fig. 7 and coordinate Fig. 4 and Fig. 5, no matter be, with the aspect of Fig. 4 or Fig. 5, this fan 4 is installed, repeatedly repeatedly adjust, the amplitude of vibration wave mode (b) of this second air-flow B can be changed, frequency, when vibration wave mode (b) of this second air-flow B and the amplitude of vibration wave mode (a) of this first air-flow A, when frequency is identical, because the phase place of the wave mode after the reflection of this adjustment chamber 320 is inherently contrary with before reflection, therefore vibration wave mode (b) of this second air-flow B can be offseted in vibration wave mode (a) that is certain and this first air-flow A, the noise produced is rotated to eliminate this fan 4.
What illustrate is, actual carry out the operation adjusted time, repeatedly can change the receptacle location of this at least one shim 322 and adjust, and the effect of to carry out adjusting later evaluation each time and abating the noise, if this adjustment fails to reach the effect abated the noise, again the adjustment mode in this adjustment chamber 320 can be changed, repetition test and reach the effect abated the noise for installed fan 4.
Claims (6)
1. a fan noise cancellation element, a fan is coordinated to use, and comprise a wind deflector unit, this wind deflector unit around one for guiding the wind-guiding space of the air-flow of this fan, this wind-guiding space has the opening that two are positioned at two opposition sides, and this fan block is in one of them opening, and there is an air intake and an outlet air end, it is characterized in that: this fan noise cancellation element also comprises a regulation unit, this regulation unit is connected to the position between described opening, and to be connected with this wind-guiding space around one and the adjustment chamber of volume can be adjusted, when this fan turns, first air-flow can be introduced into this wind-guiding space and enter this adjustment chamber more together, and go back to this wind-guiding space to produce the second air-flow together by this adjustment cavity reflection, the vibration wave mode of this second air-flow can mutually offset to abate the noise with the vibration wave mode of this first air-flow, and the volume size adjusting this adjustment chamber can change the vibration wave mode of this second air-flow.
2. fan noise cancellation element according to claim 1, it is characterized in that: this regulation unit comprises a housing around this adjustment chamber, and at least one is arranged at the shim in this adjustment chamber with can changing position, this shim for separating this adjustment chamber, to adjust the volume size that this adjustment chamber is communicated with this wind-guiding space.
3. fan noise cancellation element according to claim 2, is characterized in that: this housing has multiple interval and arranges and supply this shim to plug the slot of location.
4. the fan noise cancellation element according to any one of claims 1 to 3, is characterized in that: the air intake of this fan is towards this wind-guiding space.
5. the fan noise cancellation element according to any one of claims 1 to 3, is characterized in that: the outlet air end of this fan is towards this wind-guiding space.
6. fan noise cancellation element according to claim 1, is characterized in that: this wind deflector unit is a guide duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520116190.3U CN204512004U (en) | 2015-02-26 | 2015-02-26 | Fan noise cancellation element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520116190.3U CN204512004U (en) | 2015-02-26 | 2015-02-26 | Fan noise cancellation element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204512004U true CN204512004U (en) | 2015-07-29 |
Family
ID=53709986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520116190.3U Expired - Fee Related CN204512004U (en) | 2015-02-26 | 2015-02-26 | Fan noise cancellation element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204512004U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946641A (en) * | 2020-08-14 | 2020-11-17 | 广州众悦科技有限公司 | Heat dissipation device for big data processing |
| CN112762018A (en) * | 2018-03-30 | 2021-05-07 | 奇鋐科技股份有限公司 | Fan frame with vibration reduction structure and fan thereof |
-
2015
- 2015-02-26 CN CN201520116190.3U patent/CN204512004U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762018A (en) * | 2018-03-30 | 2021-05-07 | 奇鋐科技股份有限公司 | Fan frame with vibration reduction structure and fan thereof |
| CN111946641A (en) * | 2020-08-14 | 2020-11-17 | 广州众悦科技有限公司 | Heat dissipation device for big data processing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |