CN202165316U - Leaf device of cooling fan with noise-reducing effect - Google Patents
Leaf device of cooling fan with noise-reducing effect Download PDFInfo
- Publication number
- CN202165316U CN202165316U CN2011202717504U CN201120271750U CN202165316U CN 202165316 U CN202165316 U CN 202165316U CN 2011202717504 U CN2011202717504 U CN 2011202717504U CN 201120271750 U CN201120271750 U CN 201120271750U CN 202165316 U CN202165316 U CN 202165316U
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- flabellum
- wheel hub
- long side
- noise
- protruding
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- 230000000694 effects Effects 0.000 title abstract description 5
- 238000001816 cooling Methods 0.000 title abstract 2
- 241000883990 Flabellum Species 0.000 claims description 66
- 230000005855 radiation Effects 0.000 claims description 20
- 230000009183 running Effects 0.000 abstract description 9
- 239000002245 particle Substances 0.000 abstract 3
- 240000006409 Acacia auriculiformis Species 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a leaf device of a cooling fan with a noise-reducing effect, defining a wind inlet side and a wind outlet side, and comprising a wheel hub and a plurality of leaves which are arranged on the wheel hub at intervals. The leaves are arranged on the wheel hub at intervals, wherein each leaf comprises a first long side edge which is faced to the wind inlet side, a second long side edge which is faced to the wind outlet side, a windward side which is connected with the first long side edge and the second long side edge and is faced to the wind inlet side, and a plurality of convex particles which are convexly arranged on the windward side and are arranged along with the second long side edge. Due to the convex particles, the air turbulence generated by running the leaf can be effectively reduced, and the noise generated by the air turbulence can be further reduced; and due to the small volume of the convex particles, the weight of the leaf can not be obviously increased, the influence to the counter weight of the leaf can be reduced, and the noise generation during running can be avoided.
Description
Technical field
The utility model relates to a kind of flabellum device of radiation fan, particularly relates to a kind of flabellum device with the radiation fan that reduces noise result.
Background technique
The application area field of radiation fan is extensive, and industrial products, electronic instrument can be seen the extension of radiation fan and use such as.Consult Fig. 1, existing radiation fan 1 comprises a hollow shape shell block 11, a wheel hub 12, and a flabellum group 13.This wheel hub 12 is to be hubbed in this hollow shell block 11 and can be around himself axis rotation, and this flabellum group 13 has a plurality of blades 131 that are arranged at intervals on these wheel hub 12 outer circumferential faces.
When existing radiation fan 1 turns round; 11 of blade 131 outer rims that run up and this shell blocks are easy to generate bigger noise (wind is cut sound) because of air disturbance; If people are under the environment of the noise of having powerful connections for a long time; Make the people feel fidgety easily and the shortage quality of life, particularly long-term in the face of being full of the environment of noise, more be prone to produce to psychological and physiological harmful effect.
Consult Fig. 2; In order to address the above problem; Just announcing the technology that No. 164662 patent case " the axial flow flabellum of tool deflecting wing rib " disclosed just like TaiWan, China, is all to be provided with guide plate 21 in the positive and negative blade face of flabellum 2, when flabellum turns round; Said guide plate 21 can produce the water conservancy diversion effect to the air-flow through flabellum 2, reduces air disturbance and the noise that produced can reduce flabellum 2 runnings the time.
Along with each item electronic product all is devoted to compact design; Radiation fan need cooperate reduced volume equally; Though therefore above-mentioned design can reach the effect that reduces noise, the guide plate 21 of strip is set on the less flabellum 2 of volume, can cause overall weight obviously to increase; If will keep same rotational speed, then need bigger driving force.In addition, play the part of considerable role because whether average the counterweight of flabellum is for the steady of its running and reduction noise, and the counterweight that is arranged so that of strip guide plate 21 is difficult for adjustment, causes flabellum 2 rotations unstable, can cause the generation of noise in operating equally.
Summary of the invention
The purpose of the utility model is to provide a kind of flabellum device with the radiation fan that reduces noise result that can reduce noise result.
The utlity model has the flabellum device of the radiation fan that reduces noise result; The inlet air side that definition has an air feed stream to flow into; And one in contrast to this inlet air side and the air side that air feed stream flows out, and this flabellum device comprises a wheel hub, and multi-disc is arranged at intervals at the flabellum on this wheel hub.
This wheel hub has a basal wall towards this inlet air side; And surrounding wall that bends and extend by this basal wall periphery towards this air side; Said flabellum is to be arranged at intervals on the surrounding wall of this wheel hub; And each sheet flabellum has that first long side towards this inlet air side, second long side towards this air side, one connect this first and second long side and towards the windward side of this inlet air side, and at least one protruding grain that is convexly set on this windward side and is provided with along this second long side.
The purpose of the utility model and solve its technical problem and also can adopt following technical measures further to realize.
Preferably, aforementioned flabellum device with the radiation fan that reduces noise result, wherein each sheet flabellum has a plurality of protruding grains that are convexly set on this windward side and are provided with along this second long side.
Preferably; Aforementioned flabellum device with the radiation fan that reduces noise result, wherein each sheet flabellum has three protruding grains that are convexly set on this windward side and are provided with along this second long side, and said protruding grain foundation is far and near with the distance of the surrounding wall of this wheel hub; Be defined as the first protruding grain, the second protruding grain from the near to the remote in regular turn; And the 3rd protruding grain, and each first protruding grain surrounding wall that is contiguous this wheel hub, each the 3rd protruding grain is that contiguous each sheet flabellum is terminal.
The useful effect of the utility model is: by the setting of protruding grain; The air-flow flow-disturbing that is produced in the time of can effectively reducing the flabellum running; And then reduce the noise that flow-disturbing produced, and, can not increase the weight of flabellum significantly because the volume of protruding grain is little; Influence can be reduced, the generation of noise in operating can be avoided equally for the flabellum counterweight.
Description of drawings
Fig. 1 is a front view, and existing radiation fan is described;
Fig. 2 is a front view, explains that TaiWan, China announces the flabellum aspect of No. 164662 patent case " the axial flow flabellum of tool deflecting wing rib ";
Fig. 3 is a stereogram, and the preferred embodiment of the flabellum device that the utlity model has the radiation fan that reduces noise result is described;
Fig. 4 is a front view, aid illustration Fig. 3;
Fig. 5 is a spectrogram, and the noise spectrum of the flabellum device of a control group is described;
Fig. 6 is a spectrogram, and the noise spectrum of this preferred embodiment is described.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.
Consult Fig. 3,4; The utlity model has the preferred embodiment of the flabellum device 3 of the radiation fan that reduces noise result; The inlet air side A that these flabellum device 3 definition have air feed stream to flow into; And one in contrast to this inlet air side A and the air side B that air feed stream flows out, and this flabellum device 3 comprises a wheel hub 31, and multi-disc is arranged at intervals at the flabellum 32 on this wheel hub 31.
This wheel hub 31 has a basal wall 311 towards this inlet air side A; Reach a surrounding wall 312 by this basal wall 311 peripheries bending and B extension towards this air side; Said flabellum 32 is to be arranged at intervals on the surrounding wall 312 of this wheel hub 31; And each sheet flabellum 32 has that second long side 322, towards first long side 321, a B towards this air side of this inlet air side A connects this first long side 321, second long side 322 and towards the windward side 323 of this inlet air side A, and a plurality of protruding grain 324 that is convexly set on this windward side 323 and is provided with along this second long side 322.
In present embodiment; Each sheet flabellum 32 has three protruding grains 324 that are convexly set on this windward side 323 and are provided with along this second long side 322; Said protruding grain 324 foundations are far and near with the distance of the surrounding wall 312 of this wheel hub 31, are defined as first protruding 324a, second protruding 324b from the near to the remote in regular turn, and the 3rd protruding 324c; And each first protruding 324a is the surrounding wall 312 of contiguous this wheel hub 31, and each the 3rd protruding 324c is contiguous each sheet flabellum 32 end.The quantity of certainly above-mentioned protruding the grain 324 and enforcement aspect that the position is a present embodiment is set is not as limit.
When these flabellum device 3 runnings; Air-flow can be got into by this inlet air side A, is flowed out by this air side B again, and what specify is; Because during these flabellum device 3 runnings; Air-flow can clash into wheel hub 31 and housing (figure does not show) especially easily, therefore especially first protruding 324a is arranged at the surrounding wall 312 of contiguous this wheel hub 31, and each the 3rd protruding 324c is arranged at contiguous each sheet flabellum 32 end.Whereby, air-flow is through said protruding grain 324 o'clock, can the steering flow direction and can control the flow direction of air-flow, and stablize its flow velocity and promote fluency, the air-flow flow-disturbing that is produced in the time of effectively reducing flabellum 32 runnings, and then reduce the noise that flow-disturbing produced.In addition,, can not increase the weight of flabellum 32 significantly, can reduce influence, and then reduce the vibration of flabellum 32 runnings, can avoid the generation of noise in operating equally for flabellum 32 counterweights because the volume of said protruding grain 324 is little.
Like Fig. 5, shown in 6; Experimental result for the actual measurement noise level; Fig. 5 is a control group; The result who just measures with the flabellum device that any protruding grain is not set on flabellum, Fig. 6 is with this preferred embodiment, the result that promptly the flabellum device 3 of formation first to the 3rd protruding 324a～324c is measured on the flabellum 32.Measuring mode is to make an apery head measuring instrument (HMS; Figure does not show) measure the noise that is produced when this flabellum device 3 is installed on a radiation fan (figure do not show) rotation; The average noise value HMS Left of control group among Fig. 5 (imitative left ear) is 27.7 decibels of (decibel; DB) with 28.0 decibels of HMS Right (imitative auris dextra), form first to the 3rd protruding 324a～324c level of noise HMS Left (imitative left ear) among Fig. 6 on the flabellum 32 and be 25.7 decibels with 26.1 decibels of HMS Right (imitative auris dextra).Hence one can see that, in forming the noise that produces when first to the 3rd protruding 324a～324c can reduce these flabellum device 3 rotations really on the flabellum 32.
In sum; The utlity model has the flabellum device 3 of the radiation fan that reduces noise result, by the setting of protruding grain 324, the noise when turning round except effectively reducing; And the volume of protruding grain 324 is little; Can reduce influence, can avoid the generation of noise in operating equally, can reach the purpose of the utility model really for flabellum 32 counterweights.
Claims (3)
1. flabellum device with the radiation fan that reduces noise result; The inlet air side that definition has air feed stream to flow into, and one in contrast to this inlet air side and the air side that air feed stream flows out, this flabellum device comprises a wheel hub; And multi-disc is arranged at intervals at the flabellum on this wheel hub; This wheel hub has a basal wall towards this inlet air side, and a surrounding wall that is bent and extended towards this air side by this basal wall periphery, and said flabellum is to be arranged on this surrounding wall; It is characterized in that: each sheet flabellum has first long side towards this inlet air side, second long side towards this air side, a windward side that connects this first and second long side, and at least one protruding grain that is convexly set on this windward side and is provided with along this second long side.
2. according to the said flabellum device with the radiation fan that reduces noise result of claim 1, it is characterized in that: each sheet flabellum has a plurality of protruding grains that are convexly set on this windward side and are provided with along this second long side.
3. according to the said flabellum device of claim 2 with the radiation fan that reduces noise result; It is characterized in that: each sheet flabellum has three protruding grains that are convexly set on this windward side and are provided with along this second long side; Said protruding grain foundation is far and near with the distance of the surrounding wall of this wheel hub; Be defined as the first protruding grain, the second protruding grain and the 3rd protruding grain from the near to the remote in regular turn, and each first protruding grain surrounding wall that is contiguous this wheel hub, each the 3rd protruding grain is that contiguous each sheet flabellum is terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202717504U CN202165316U (en) | 2011-07-28 | 2011-07-28 | Leaf device of cooling fan with noise-reducing effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202717504U CN202165316U (en) | 2011-07-28 | 2011-07-28 | Leaf device of cooling fan with noise-reducing effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165316U true CN202165316U (en) | 2012-03-14 |
Family
ID=45801144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202717504U Expired - Lifetime CN202165316U (en) | 2011-07-28 | 2011-07-28 | Leaf device of cooling fan with noise-reducing effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165316U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736426A (en) * | 2016-04-26 | 2016-07-06 | 浙江理工大学 | Axial flow fan comprising blade pressure surfaces with winglets and blade tops with blowing structures |
| CN106460869A (en) * | 2014-05-13 | 2017-02-22 | 雷姆控股有限公司 | Blade for industrial axial fan and industrial axial fan comprising the blade |
-
2011
- 2011-07-28 CN CN2011202717504U patent/CN202165316U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460869A (en) * | 2014-05-13 | 2017-02-22 | 雷姆控股有限公司 | Blade for industrial axial fan and industrial axial fan comprising the blade |
| CN105736426A (en) * | 2016-04-26 | 2016-07-06 | 浙江理工大学 | Axial flow fan comprising blade pressure surfaces with winglets and blade tops with blowing structures |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |