CN102927046A - Low-noise efficient impeller of axial-flow fan - Google Patents
Low-noise efficient impeller of axial-flow fan Download PDFInfo
- Publication number
- CN102927046A CN102927046A CN2012104780728A CN201210478072A CN102927046A CN 102927046 A CN102927046 A CN 102927046A CN 2012104780728 A CN2012104780728 A CN 2012104780728A CN 201210478072 A CN201210478072 A CN 201210478072A CN 102927046 A CN102927046 A CN 102927046A
- Authority
- CN
- China
- Prior art keywords
- guiding
- attack
- angle
- blades
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of axial-flow fans, particularly to a low-noise efficient impeller of an axial-flow fan, which includes a hub and blades, wherein the blades are swept-forward. The impeller is characterized in that the swept-forward windward sides of the blades are saw-toothed; at least two guiding attack angles are arranged on the windward sides of the blades sequentially; the cross sections of the guiding attack angles are non-isosceles triangles respectively; the length of the front lateral edge of each guiding attack angle relative to the hub is shorter than that of the ear lateral edge of each guiding attack angle relative to the hub; and the height of each guiding attack angle is sequentially increased from the blade bottom to blade top, so that the flow drifting direction of airflow under the action of centrifugal force corresponds to the guiding attack angles. According to the invention, the guiding attack angles are additionally arranged on the windward sides of the blades, so that the windward effect of the saw-toothed swept-forward blades is remarkably improved compared with that of the smooth swept-forward blades, and the pneumatic performance is greatly improved; and the impeller adopting the structure has the advantages of novel structure, low noise, high efficiency, remarkably improved pneumatic performance and the like.
Description
Technical field
The present invention relates to the axial-flow blower technical field, specifically a kind of low noise high-efficiency axial-flow blower impeller.
Background technique
As everyone knows, existing large-scale axial-flow blower is that the blade by wheel hub and wheel hub periphery consists of, what blade shape had is the longitudinal section blade, what have is to wait the section blade, it is streamlined that its cross section is ellipticity, the employing lineal shape that the blade inlet edge windward side has, what have is designed to forward sweep, and the advantage of front a kind of structure is: when air-flow vertical impact blade, can reach the effect that reduces gas-flow resistance, its deficiency is: when wheel rotation, air-flow is outwards bias current under the effect of centrifugal force, makes the blade exhibition to meeting gas shock, cause vane rotary to form very large gas-flow resistance, simultaneously, also bring noise to impeller, greatly affected the aeroperformance of impeller; The advantage of rear a kind of structure is: the windward side is linear blade relatively, and this forward sweep blade greatly reduces fan noise, has improved efficient, its deficiency is: because structural limitations, it is very little that the angle [alpha] of sweepforward can not design, and sees Fig. 1, and just the less angle α that facings the wind is arranged among a small circle on the leaf top, and push up blade root from leaf, the angle is increasing down with the wind, until 90 o quadratures make the aeroperformance of impeller can not get obvious improvement, cause fan noise large, work efficiency is low.
The objective of the invention is to solve above-mentioned the deficiencies in the prior art, provide a kind of novel structure, noise is low, effect is high, significantly improve the low noise high-efficiency axial-flow blower impeller of aeroperformance.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of low noise high-efficiency axial-flow blower impeller, comprise wheel hub and blade, blade is forward sweep, the forward sweep windward side indentation that it is characterized in that blade, be provided with successively at least two guiding angles of attack on the windward side of blade, the cross section of the guiding angle of attack is respectively not isosceles triangle, the length of the guiding angle of attack cephalolateral margin of its relative wheel hub is less than the length of posterior lateral margin, the height of the guiding angle of attack is increased to the leaf top successively by blade root, so that the guiding angle of attack is corresponding with the bias current direction of air-flow under centrifugal action, increased the guiding angle of attack by the windward side to blade, flexuose forward sweep blade is significantly improved than the effect of facining the wind of smooth forward sweep blade, has greatly improved aeroperformance.
The down with the wind angle angle of the guiding angle of attack of the present invention is between 30 °-50 °, wherein guide the ratio of height and the width of the angle of attack between 30-50%, be H=(0.3-0.5) B, the angle between cephalolateral margin and the height is between 8-12 °, and the angle between posterior lateral margin and the height is between 25-35 °.
The present invention is owing to adopting said structure, has novel structure, noise is low, effect is high, significantly improve the advantage such as aeroperformance.
Description of drawings
Fig. 1 is the structural representation of prior art Leaf.
Fig. 2 is a kind of structural representation of the present invention.
Fig. 3 is another kind of structural representation of the present invention.
Fig. 4 is the structural representation of Leaf of the present invention.
Reference character: wheel hub 1, blade 2, the guiding angle of attack 3, cephalolateral margin 4, posterior lateral margin 5.
Embodiment
The present invention is further described below in conjunction with accompanying drawing:
As shown in drawings, a kind of low noise high-efficiency axial-flow blower impeller, comprise wheel hub 1 and blade 2, blade 2 is forward sweep, the forward sweep windward side indentation that it is characterized in that blade 2, be provided with successively at least two guiding angles of attack 3 on the windward side of blade 2, the cross section of the guiding angle of attack 3 is respectively not isosceles triangle, the length of the guiding angle of attack 3 cephalolateral margins 4 of its relative wheel hub 1 is less than the length of posterior lateral margin 5, the height of the guiding angle of attack 3 is increased to the leaf top successively by blade root, so that the guiding angle of attack 3 is corresponding with the bias current direction of air-flow under centrifugal action, increased the guiding angle of attack 3 by the windward side to blade 2, flexuose forward sweep blade 2 is significantly improved than the effect of facining the wind of smooth forward sweep blade, has greatly improved aeroperformance.
The down with the wind angle angle a of the guiding angle of attack 3 of the present invention is between 30 °-50 °, wherein guide the ratio of height and the width of the angle of attack 3 between 30-50%, be H=(0.3-0.5) B, the angle between cephalolateral margin and the height is between 8-12 °, and the angle between posterior lateral margin and the height is between 25-35 °.
Embodiment: the present invention can be provided with three guiding angles of attack or four guiding angles of attack or five guiding angles of attack by the forward sweep blade, the impeller of these three kinds of blades passes through respectively the model machine seat comparative trial of diameter phi 800mm with the impeller of former forward sweep blade, draw six operating point slippages and reach 2.6dB ~ 6.5dB, specifically see following table for details:
By contrast, shown that fully noise of the present invention has obtained obvious decline, the aeroperformance of axial-flow blower is greatly improved.
The present invention is owing to adopting said structure, has novel structure, noise is low, effect is high, significantly improve the advantage such as aeroperformance.
Claims (2)
1. low noise high-efficiency axial-flow blower impeller, comprise wheel hub and blade, blade is forward sweep, the forward sweep windward side indentation that it is characterized in that blade, be provided with successively at least two guiding angles of attack on the windward side of blade, the cross section of the guiding angle of attack is respectively not isosceles triangle, and the length of the guiding angle of attack cephalolateral margin of its relative wheel hub is less than the length of posterior lateral margin, and the height of the guiding angle of attack is increased to the leaf top successively by blade root.
2. a kind of low noise high-efficiency axial-flow blower impeller according to claim 1, it is characterized in that guiding the down with the wind angle angle of the angle of attack between 30 °-50 °, wherein guide the ratio of height and the width of the angle of attack between 30-50%, be H=(0.3-0.5) B, angle between cephalolateral margin and the height is between 8-12 °, and the angle between posterior lateral margin and the height is between 25-35 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210478072.8A CN102927046B (en) | 2012-11-22 | 2012-11-22 | Low-noise efficient impeller of axial-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210478072.8A CN102927046B (en) | 2012-11-22 | 2012-11-22 | Low-noise efficient impeller of axial-flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102927046A true CN102927046A (en) | 2013-02-13 |
| CN102927046B CN102927046B (en) | 2015-04-29 |
Family
ID=47641941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210478072.8A Active CN102927046B (en) | 2012-11-22 | 2012-11-22 | Low-noise efficient impeller of axial-flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927046B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314869A (en) * | 2014-10-22 | 2015-01-28 | 深圳市南方格瑞斯科技有限公司 | Structure-improved respirator motor impeller |
| CN112012960A (en) * | 2020-08-03 | 2020-12-01 | 珠海格力电器股份有限公司 | Fan blade assembly, fan assembly and air conditioner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1187076A (en) * | 1966-12-01 | 1970-04-08 | Gen Electric | Improvements in Gas Turbine Engines and Compressor Blades Therefor. |
| DE3234011A1 (en) * | 1982-09-14 | 1984-03-15 | Braun Ag, 6000 Frankfurt | Axial fan |
| CN1865711A (en) * | 2006-04-18 | 2006-11-22 | 吉林大学 | Method for reducing noise of axial flow fan |
| CN201963598U (en) * | 2011-01-01 | 2011-09-07 | 杭州顿力电器有限公司 | Axial flow bionic blade |
| CN102588339A (en) * | 2012-03-01 | 2012-07-18 | Tcl空调器(中山)有限公司 | Fan structure and axial fan |
| CN202883477U (en) * | 2012-11-22 | 2013-04-17 | 威海克莱特菲尔风机股份有限公司 | Low-noise efficient axial flow fan impeller |
-
2012
- 2012-11-22 CN CN201210478072.8A patent/CN102927046B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1187076A (en) * | 1966-12-01 | 1970-04-08 | Gen Electric | Improvements in Gas Turbine Engines and Compressor Blades Therefor. |
| DE3234011A1 (en) * | 1982-09-14 | 1984-03-15 | Braun Ag, 6000 Frankfurt | Axial fan |
| CN1865711A (en) * | 2006-04-18 | 2006-11-22 | 吉林大学 | Method for reducing noise of axial flow fan |
| CN201963598U (en) * | 2011-01-01 | 2011-09-07 | 杭州顿力电器有限公司 | Axial flow bionic blade |
| CN102588339A (en) * | 2012-03-01 | 2012-07-18 | Tcl空调器(中山)有限公司 | Fan structure and axial fan |
| CN202883477U (en) * | 2012-11-22 | 2013-04-17 | 威海克莱特菲尔风机股份有限公司 | Low-noise efficient axial flow fan impeller |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314869A (en) * | 2014-10-22 | 2015-01-28 | 深圳市南方格瑞斯科技有限公司 | Structure-improved respirator motor impeller |
| CN112012960A (en) * | 2020-08-03 | 2020-12-01 | 珠海格力电器股份有限公司 | Fan blade assembly, fan assembly and air conditioner |
| CN112012960B (en) * | 2020-08-03 | 2021-06-22 | 珠海格力电器股份有限公司 | Fan blade assembly, fan assembly and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102927046B (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203756593U (en) | High-efficient centrifugal wind wheel | |
| CN202391808U (en) | Low-noise axial flow air wheel | |
| CN103062112A (en) | Road cleaning unit and centrifugal fan impeller thereof | |
| JP3204521U (en) | fan | |
| CN104061187A (en) | Axial-flow fan blade, axial-flow fan and air conditioner | |
| CN104653515B (en) | A kind of double-suction type centrifugal fan | |
| CN202833299U (en) | Axial wind wheel | |
| CN102927046B (en) | Low-noise efficient impeller of axial-flow fan | |
| CN205173055U (en) | Low noise that trailing edge is buckled does not have spiral case fan wheel | |
| CN202883477U (en) | Low-noise efficient axial flow fan impeller | |
| CN101634312A (en) | Fan blades of axial flow fan | |
| CN205331052U (en) | Impeller of organic airfoil fan of counter -rotating fan apparatus | |
| CN204553335U (en) | A kind of novel axial-flow leaf | |
| CN102808804A (en) | Serial blade rotor impeller and axial flow fan | |
| CN201934380U (en) | Fan blade of ventilation fan | |
| CN202746288U (en) | Tandem blade rotor impeller and axial flow fan | |
| CN201763681U (en) | Adjustable impeller structure of axial-flow air blower | |
| CN101368575A (en) | Fan impeller | |
| CN201258874Y (en) | Fan blade in axial fan | |
| CN209012125U (en) | Axial-flow windwheel and warm-air drier | |
| CN103362862B (en) | Draught fan impeller | |
| CN102979764A (en) | Axial flow fan blade and fan | |
| CN102777418B (en) | Axial flow wind wheel and air-conditioning outdoor unit | |
| CN204126966U (en) | A kind of new and effective axial-flow blower | |
| CN205078497U (en) | Centrifugal fan single face machine airfoil fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |