CN2934683Y - Axial-flow fan of air-conditioner - Google Patents
Axial-flow fan of air-conditioner Download PDFInfo
- Publication number
- CN2934683Y CN2934683Y CN 200620087739 CN200620087739U CN2934683Y CN 2934683 Y CN2934683 Y CN 2934683Y CN 200620087739 CN200620087739 CN 200620087739 CN 200620087739 U CN200620087739 U CN 200620087739U CN 2934683 Y CN2934683 Y CN 2934683Y
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- air
- utility
- fan
- model
- noise
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- Expired - Fee Related
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Abstract
The utility model relates to an axial fan of air-conditioner, for solving the technical problem of large noise from the existing axial fan. In order to achieve the above-mentioned objectives, the axial fan of air-conditioner of the utility model comprises fan blades, characterized in that the fan blade is equipped with grooves. By adopting the above-mentioned application of new structure, a groove is mounted on the rear wing of the axial fan blade and the suction surface is reduced, so the laminar flow is converted to the turbulence, then the resonance amplification of T-S wave is avoided, so as to effectively reduce the noise. The utility model has the advantages of simple fabrication, low cost and good effect of the noise reducing.
Description
Technical field
The utility model relates to air conditioner, specifically to having a kind of improvement of air conditioner outdoor machine axial fan now.
Background technique
Along with improving constantly of living standard, air conditioner is more and more universal.The Consumer is also more and more higher to quality, the performance requirement of air conditioner.At present, air conditioner outdoor machine ubiquity noise is bigger, and this noise mainly is made up of noise of motor and fan noise.Because air conditioner outdoor machine generally adopts axial fan to carry out forced-convection heat transfer, fan noise is produced by axial fan, the eddy current that fan noise and impeller produce in air flows is closely related, when impeller trailing edge place trailing vortex comes off the sound wave that produces and blade surface when satisfying certain and concern near two-dimentional T-S wave frequency, will form feedback loop and resonance takes place and amplify the T-S ripple, the trailing vortex shedding frequence is locked, on frequency spectrum, form a relatively peak of point, form the bigger fan blade surface eddy current noise that comes off.Can form feedback loop and cause the laminar boundary layer noise when meeting the following conditions: 1, the wave zone, flow field is positioned at the upstream position of sound source radiation point; 2, sound source radiation point is on the blade wake passing line; 3, produce the fluid boundary laminar surface of the fluid fluctuation of sound source at object; 4, the surface, boundary layer keeps laminar flow not by brokenization on the whole surface of feedback path.Therefore, in order to prevent that forming feedback loop causes the laminar boundary layer noise, need carry out some improvement to axial flow fan structure.
Summary of the invention
The purpose of this utility model is for big this technical problem of axial fan noise that solves the prior art existence, and the less air-condition axial flow fan of a kind of fan noise that provides.
To achieve these goals, the utility model air-condition axial flow fan comprises fan blade, it is characterized in that: described fan blade is provided with groove.
In order to reach better noise reduction, in the further detailed structure of the utility model, also have following technical characteristics: described groove is arranged on fan blade empennage portion.
In the further detailed structure of the utility model, also have following technical characteristics: the groove on every fan blade is spaced equably.
In the further detailed structure of the utility model, also have following technical characteristics: described groove is for oval.
The utlity model has following advantage and good effect: because the utility model has adopted said structure, portion has groove at axial fan blade empennage, cut suction surface, make the blade surface laminar flow convert turbulent flow to, the generation of having avoided resonance to amplify the T-S ripple has reduced fan noise effectively.The utility model is made simply, cost is low, excellent noise reduction effect.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 the utility model axial fan plan view.
1, fan blade; 2, blade empennage; 3, groove; 4, blade front wing.
Embodiment
Referring to Fig. 1, the utility model air-condition axial flow fan comprises fan blade 1, and fan blade 1 is provided with oval-shaped groove 3, and groove 3 is arranged on fan blade empennage portion 2, and is spaced equably.The axial fan of this structure makes the blade surface laminar flow convert turbulent flow to by the cutting suction surface, and the generation of having avoided resonance to amplify the T-S ripple has reduced fan noise effectively.In addition, groove 3 also can be arranged in the middle of 4 ones of blade front wings or the blade, but noise reduction is not as being arranged on 2 ones of blade empennages.
Certainly, above-mentioned explanation is not to be to restriction of the present utility model, and the utility model also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present utility model, the variation of making, remodeling, interpolation or replacement also should belong to protection domain of the present utility model.
Claims (4)
1, a kind of air-condition axial flow fan, it comprises fan blade, it is characterized in that: described fan blade is provided with groove.
2, air-condition axial flow fan according to claim 1 is characterized in that: described groove is arranged on fan blade empennage portion.
3, air-condition axial flow fan according to claim 1 and 2 is characterized in that: the groove on every fan blade is spaced equably.
4, air-condition axial flow fan according to claim 3 is characterized in that: described groove is for oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620087739 CN2934683Y (en) | 2006-08-07 | 2006-08-07 | Axial-flow fan of air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620087739 CN2934683Y (en) | 2006-08-07 | 2006-08-07 | Axial-flow fan of air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2934683Y true CN2934683Y (en) | 2007-08-15 |
Family
ID=38351372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620087739 Expired - Fee Related CN2934683Y (en) | 2006-08-07 | 2006-08-07 | Axial-flow fan of air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2934683Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536900A (en) * | 2012-02-17 | 2012-07-04 | 美的集团有限公司 | Axial flow wind wheel |
| CN104131997A (en) * | 2014-07-28 | 2014-11-05 | 广东美的制冷设备有限公司 | Axial flow wind wheel and axial flow fan provided with same |
| CN101749282B (en) * | 2008-12-22 | 2015-04-29 | 联想(北京)有限公司 | Fan, heat dissipation module and computer adopting fan and method for reducing noise of fan |
| CN106939900A (en) * | 2017-04-10 | 2017-07-11 | 温州职业技术学院 | A kind of turbulent low noise draught fan impeller |
-
2006
- 2006-08-07 CN CN 200620087739 patent/CN2934683Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749282B (en) * | 2008-12-22 | 2015-04-29 | 联想(北京)有限公司 | Fan, heat dissipation module and computer adopting fan and method for reducing noise of fan |
| CN102536900A (en) * | 2012-02-17 | 2012-07-04 | 美的集团有限公司 | Axial flow wind wheel |
| CN104131997A (en) * | 2014-07-28 | 2014-11-05 | 广东美的制冷设备有限公司 | Axial flow wind wheel and axial flow fan provided with same |
| CN106939900A (en) * | 2017-04-10 | 2017-07-11 | 温州职业技术学院 | A kind of turbulent low noise draught fan impeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: QINGDAO HISENSE AIR CONDITIONING CO. Free format text: FORMER OWNER: HAIXIN GROUP CO., LTD.; PATENTEE Effective date: 20071012 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071012 Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Haisense Air Conditioner Co., Ltd., Qingdao Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Co-patentee before: Haisense Air Conditioner Co., Ltd., Qingdao Patentee before: Hisense Group Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: HISENSE( SHANDONG ) AIR CONDITIONING CO., LTD. Free format text: FORMER OWNER: QINGDAO HISENSE AIR CONDITIONING CO. Effective date: 20080425 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080425 Address after: Shandong City, Qingdao province Jiangxi City Road 11, zip code: 266071 Patentee after: Hisense (Shandong) Air-Conditioning Co., Ltd. Address before: Shandong City, Qingdao province Jiangxi City Road 11, zip code: 266071 Patentee before: Haisense Air Conditioner Co., Ltd., Qingdao |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070815 Termination date: 20150807 |
|
| EXPY | Termination of patent right or utility model |