CN106286391A - It is arranged on the elastic leaf at fan blade top and there is blade and the blower fan of elastic leaf - Google Patents
It is arranged on the elastic leaf at fan blade top and there is blade and the blower fan of elastic leaf Download PDFInfo
- Publication number
- CN106286391A CN106286391A CN201610874122.2A CN201610874122A CN106286391A CN 106286391 A CN106286391 A CN 106286391A CN 201610874122 A CN201610874122 A CN 201610874122A CN 106286391 A CN106286391 A CN 106286391A
- Authority
- CN
- China
- Prior art keywords
- axial
- fan blade
- elastic
- vanelets
- flow fan
- 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.)
- Pending
Links
- 238000005452 bending Methods 0.000 claims abstract description 34
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 230000007257 malfunction Effects 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001936 parietal effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- OWWYREKLGMILGW-UHFFFAOYSA-N δline Chemical compound COC1C2C3C4(C5C6OC(C)=O)C(OC)CCC5(C)CN(CC)C4C46OCOC42CC(OC)C1C3 OWWYREKLGMILGW-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/382—Flexible blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
It is arranged on the elastic leaf at fan blade top according to involved in the present invention and there is blade and the blower fan of elastic leaf, it is arranged on the elastic vanelets at axial-flow fan blade top, for reducing the assemblage gap between axial-flow fan blade and casing, vanelets is plate-shaped, its longitudinal section is L-shaped, including free segment, linkage section and bending section, wherein, bending section is towards the suction surface direction of axial-flow fan blade.Install additional on the leaf top of fan blade and there is certain elastic lobule, by the assemblage gap between reduction fan blade and casing, the operational efficiency of blower fan and air quantity are improved with blast.It addition, have the most elastic or flexible elastic vanelets, even if when colliding with casing and rubbing, also it is not result in the destruction of blade.So, the elastic vanelets being arranged on axial-flow fan blade top that the present invention provides has the beneficial effect improving the operational efficiency of blower fan and air quantity with blast.
Description
Technical field
The invention belongs to mechanical field, be specifically related to a kind of fan blade.
Background technology
Axial flow blower is generally used for the ventilation in the places such as factory, warehouse, office, premises, it is also possible at cold wind
On machine (air cooler) and cooling tower, axial flow blower is mainly made up of parts such as impeller, casing, motor, in cooling
In large-sized axial flow blower such as tower, the blade tip clearance between the blade of its impeller and casing is the biggest, sometimes can reach
30mm, this all creates adverse effect for operational efficiency and the airflow pressure of axial flow blower.For axial flow blower, because of leaf top
Bigger the caused operational efficiency reduction in gap is likely to be breached more than 5%, and airflow pressure the most all can significantly reduce simultaneously.Reduce leaf
Fan performance can be improved in gap, top, but gap too small may cause blade and casing touch mill, cause the damage of blade.
In horizontal-shaft wind turbine, researcher has been had to propose to use leaf parietal lobules to improve the think of of wind energy utilization efficiency
Road, but this kind of horizontal-shaft wind turbine does not has casing, there is not the problem reducing blade tip clearance and touching mill with casing.
Summary of the invention
The present invention is to solve operational efficiency reduction and the air quantity wind that in above-mentioned axial flow blower, blade tip clearance causes more greatly
Pressure significantly reduces, and blade and casing is touched grind the blade damage problem that causes and carry out because blade tip clearance is less
, it is therefore intended that a kind of elastic vanelets being arranged on axial-flow fan blade top is provided and there is blade and the wind of elastic leaf
Machine.
The invention provides a kind of elastic vanelets being arranged on axial-flow fan blade top, be used for reducing axial flow blower leaf
Assemblage gap between sheet and casing, overcomes the Rubbing faults between blade and casing, and vanelets is plate-shaped, and its longitudinal section is in " L "
Shape, it is characterised in that include using elastomeric material to make: free segment, free segment is straight line；Linkage section, with axial flow blower leaf
Sheet top connects；And bending section, connect linkage section and free segment, wherein, bending section is towards the suction surface of axial-flow fan blade
Direction, bending section includes plural section camber line and the straight line being smoothly connected.
In the elastic vanelets being arranged on axial-flow fan blade top that the present invention provides, it is also possible to there is such spy
Levying: wherein, free segment is camber line, and the radius of curvature of this camber line is more than 10 times of assemblage gap.
It addition, in the elastic vanelets being arranged on axial-flow fan blade top that the present invention provides, it is also possible to there is this
The feature of sample: wherein, linkage section is straight line.
It addition, in the elastic vanelets being arranged on axial-flow fan blade top that the present invention provides, it is also possible to there is this
The feature of sample: wherein, linkage section is connected as with axial-flow fan blade top being connected together, bond, rivet, weld in any one
Kind.
It addition, in the elastic vanelets being arranged on axial-flow fan blade top that the present invention provides, it is also possible to there is this
The feature of sample: wherein, bending section includes the first bending section and the second bending section, and the first bending section is straight line or has radius of curvature
Camber line more than 10 times of assemblage gap, the second bending section be radius of curvature be the camber line of 0.3～0.8 times of assemblage gap.
It addition, in the elastic vanelets being arranged on axial-flow fan blade top that the present invention provides, it is also possible to there is this
The feature of sample: wherein, free segment end tangent line is 5～30 ° with the angle of axial-flow fan blade direction of rotation tangent line.
It addition, in the elastic vanelets being arranged on axial-flow fan blade top that the present invention provides, it is also possible to there is this
The feature of sample: wherein, the thickness of elastic vanelets is change.
It addition, in the elastic vanelets being arranged on axial-flow fan blade top that the present invention provides, it is also possible to there is this
The feature of sample: wherein, the corresponding thickness of linkage section is 1～2mm, and the corresponding thickness at free segment top is 0.1～0.3mm.
It addition, the present invention also provides for a kind of axial-flow fan blade using elastic vanelets, it is characterised in that: elastic lobule
Sheet is above-mentioned elastic vanelets.
It addition, the present invention also provides for a kind of axial flow blower using above-mentioned axial-flow fan blade.
The effect of invention and effect
According to the involved in the present invention elastic vanelets being arranged on axial-flow fan blade top, it is used for reducing axial flow blower
Assemblage gap between blade and casing, vanelets is plate-shaped, and its longitudinal section is L-shaped, it is characterised in that include free segment,
Linkage section and include plural section camber line and the bending section of straight line being smoothly connected, wherein, bending section is towards axial-flow fan blade
Suction surface direction.Installing additional on the leaf top of fan blade and have certain elastic lobule, this elasticity vanelets is owing to having elasticity
Shape can be changed so that the assemblage gap between fan blade and casing also can along with the change size by air drag
Enough adaptively change is big and diminishes, and then the leaf longevity of blower fan is extended, and blower fan efficiency in running also obtains simultaneously
Having arrived raising, air quantity also enhances with blast.
Further, blower fan adds the most elastic or flexible elastic vanelets so that even if sending out with casing at blade
When raw collision and friction, also it is not result in the destruction of blade.So, what the present invention provided is arranged on axial-flow fan blade top
Elastic vanelets has the beneficial effect improving the operational efficiency of blower fan and air quantity with blast.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of embodiments of the invention Elastic vanelets；
Fig. 2 is the Longitudinal cross section schematic of embodiments of the invention Elastic vanelets；
Fig. 3 is embodiments of the invention Elastic vanelets and fan blade scheme of installation；And
Fig. 4 is the cross sectional representation of blower fan blade tip in embodiments of the invention.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, real below
Execute example to combine accompanying drawing the involved in the present invention elastic vanelets being arranged on axial-flow fan blade top is specifically addressed.
Fig. 1 is the schematic perspective view of embodiments of the invention Elastic vanelets；
As it is shown in figure 1, elastic vanelets 100 is plate-shaped, there is linkage section 10, bending section 20, free segment 30.
Fig. 2 is the Longitudinal cross section schematic of embodiments of the invention Elastic vanelets；
Fig. 3 is embodiments of the invention Elastic vanelets and fan blade scheme of installation.
As shown in Figure 2 and Figure 3, the longitudinal section of elastic vanelets 100 is L-shaped, and JK is casing, δ be axial-flow fan blade with
Assemblage gap between casing.
Linkage section 10 is AB section, is straight line.
Bending section 20 connects free segment 30 and linkage section 10, and bending section 20 includes the first bending section 21 and the second bending section
22。
First bending section 21 is BC section, and the first bending section 21 is for straight line or has radius of curvature more than assemblage gap δ 10 times
Camber line, in embodiment, the first bending section 21 is the camber line of 15 δ.
Second bending section 22 is CD section, the second bending section 22 be radius of curvature be the arc of 0.3～0.8 times of assemblage gap δ
Line, in embodiment, the second bending section 22 is the camber line of 0.5 δ.
Free segment 30 is DE section, and free segment 30 is straight line or has the radius of curvature camber line more than assemblage gap δ 10 times, from
Being 5～30 ° by the angle of section 30 end tangent line Yu axial-flow fan blade direction of rotation XZ tangent line, in embodiment, free segment 30 is straight
Line, free segment 30 end tangent line is 10 ° with the angle of axial-flow fan blade direction of rotation XZ tangent line.
As it is shown on figure 3, XL is the suction surface of axial-flow fan blade, YL is the pressure face of axial-flow fan blade, and YD is axial flow
The top of fan blade, XZ is the direction of rotation of axial-flow fan blade, and JK is casing.
Elastic vanelets 100 is arranged on the top YD of axial-flow fan blade, and bending section 20 is towards the suction of axial-flow fan blade
XL direction, power face bends.
Fig. 4 is the cross sectional representation of blower fan blade tip in embodiments of the invention.
As shown in Figure 4, fan blade top YD has straight line notch CK.
Linkage section 10 is connected as with axial-flow fan blade top YD being connected together, bond, rivet, weld in any one
Kind, embodiment middle connecting segment 10 and axial-flow fan blade top YD are connected as carrying out being connected together and use bonding solid by notch CK
Fixed.
The thickness of elastic vanelets 100 vanelets is change, and the corresponding thickness of linkage section 10 root is 1～2mm, freely
The corresponding thickness at section 30 tops is 0.1～0.3mm, and in embodiment, the corresponding thickness of linkage section 10 root is 2mm, free segment 30
The corresponding thickness at top is 0.2mm.
The present invention also provides for a kind of axial-flow fan blade using above-mentioned elastic vanelets 100.
The present invention also provides for a kind of axial flow blower using above-mentioned axial-flow fan blade.
The effect of embodiment and effect
According to the elastic vanelets being arranged on axial-flow fan blade top involved by the present embodiment, it is used for reducing axial flow wind
Assemblage gap between machine blade and casing, vanelets is plate-shaped, and its longitudinal section is L-shaped, it is characterised in that include freedom
Section, linkage section and include plural section camber line and the bending section of straight line being smoothly connected, wherein, bending section is towards axial flow blower leaf
The suction surface direction of sheet.Install additional on the leaf top of fan blade and there is certain elastic lobule, by reducing fan blade and casing
Between assemblage gap and the operational efficiency of blower fan and air quantity are improved with blast.It addition, have certain elastic or
Flexible leaf parietal lobules, even if when colliding with casing and rubbing, is also not result in the destruction of blade.
It addition, embodiment middle connecting segment is connected as being connected together with axial-flow fan blade top, there is simple in construction, operation
Feature easily.
Further, embodiment provides a kind of axial-flow fan blade using elastic vanelets and axial flow blower, due to
This blade and blower fan have above-mentioned elastic vanelets so that this blade is more resistant to mill, and service life is longer.
Above-mentioned embodiment is the preferred case of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. it is arranged on the elastic vanelets at axial-flow fan blade top, for reducing between axial-flow fan blade and casing
Gap, even if colliding, also will not induced malfunction, described vanelets is plate-shaped, and its longitudinal section is L-shaped, it is characterised in that
Make including using elastomeric material:
Free segment, described free segment is straight line；
Linkage section, is connected with described axial-flow fan blade top；And
Bending section, connects described linkage section and described free segment,
Wherein, described bending section is towards the suction surface direction of described axial-flow fan blade, and described bending section includes being smoothly connected
Plural number section camber line and straight line.
The elastic vanelets being arranged on axial-flow fan blade top the most according to claim 1, it is characterised in that:
Wherein, described free segment is camber line, and the radius of curvature of this camber line is more than 10 times of described assemblage gap.
The elastic vanelets being arranged on axial-flow fan blade top the most according to claim 1, it is characterised in that:
Wherein, described linkage section is straight line.
The elastic vanelets being arranged on axial-flow fan blade top the most according to claim 1, it is characterised in that:
Wherein, described linkage section be connected as with described axial-flow fan blade top being connected together, bond, rivet, weld in appoint
Meaning one.
The elastic vanelets being arranged on axial-flow fan blade top the most according to claim 1, it is characterised in that:
Wherein, described bending section includes the first bending section and the second bending section,
Described first bending section is straight line or has the radius of curvature camber line more than 10 times of described assemblage gap,
Described second bending section be radius of curvature be the camber line of 0.3～0.8 times of described assemblage gap.
The elastic vanelets being arranged on axial-flow fan blade top the most according to claim 1, it is characterised in that:
Wherein, described free segment end tangent line is 5～30 ° with the angle of described axial-flow fan blade direction of rotation tangent line.
The elastic vanelets being arranged on axial-flow fan blade top the most according to claim 1, it is characterised in that:
Wherein, the thickness of described elastic vanelets is change.
The elastic vanelets being arranged on axial-flow fan blade top the most according to claim 1, it is characterised in that:
Wherein, the corresponding thickness of described linkage section is 1～2mm, and the corresponding thickness at described free segment top is 0.1～0.3mm.
9. the axial-flow fan blade using elastic vanelets, it is characterised in that:
Wherein, described elastic vanelets is the elastic vanelets that in claim 1-8, any one is described.
10. the axial flow blower of the axial-flow fan blade used described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874122.2A CN106286391A (en) | 2016-09-30 | 2016-09-30 | It is arranged on the elastic leaf at fan blade top and there is blade and the blower fan of elastic leaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874122.2A CN106286391A (en) | 2016-09-30 | 2016-09-30 | It is arranged on the elastic leaf at fan blade top and there is blade and the blower fan of elastic leaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106286391A true CN106286391A (en) | 2017-01-04 |
Family
ID=57717151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610874122.2A Pending CN106286391A (en) | 2016-09-30 | 2016-09-30 | It is arranged on the elastic leaf at fan blade top and there is blade and the blower fan of elastic leaf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106286391A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737078A (en) * | 2018-12-29 | 2019-05-10 | 联想(北京)有限公司 | Fan and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004011423A (en) * | 2002-06-03 | 2004-01-15 | Daikin Ind Ltd | Air flow control structure of air blowing section |
| CN2809292Y (en) * | 2005-06-24 | 2006-08-23 | 上海尔华杰机电装备制造有限公司 | Flexible fan blade |
| CN201730760U (en) * | 2010-05-28 | 2011-02-02 | 无锡韦伯风能技术有限公司 | Blade used in wind machine with cover |
| CN202811510U (en) * | 2012-07-31 | 2013-03-20 | 撼讯科技股份有限公司 | Extension type fan blade structure |
| US20160265556A1 (en) * | 2014-02-21 | 2016-09-15 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Fan comprising an impeller with blades |
-
2016
- 2016-09-30 CN CN201610874122.2A patent/CN106286391A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004011423A (en) * | 2002-06-03 | 2004-01-15 | Daikin Ind Ltd | Air flow control structure of air blowing section |
| CN2809292Y (en) * | 2005-06-24 | 2006-08-23 | 上海尔华杰机电装备制造有限公司 | Flexible fan blade |
| CN201730760U (en) * | 2010-05-28 | 2011-02-02 | 无锡韦伯风能技术有限公司 | Blade used in wind machine with cover |
| CN202811510U (en) * | 2012-07-31 | 2013-03-20 | 撼讯科技股份有限公司 | Extension type fan blade structure |
| US20160265556A1 (en) * | 2014-02-21 | 2016-09-15 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Fan comprising an impeller with blades |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737078A (en) * | 2018-12-29 | 2019-05-10 | 联想(北京)有限公司 | Fan and electronic equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |
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| WD01 | Invention patent application deemed withdrawn after publication |