CN205243935U - Fan blade - Google Patents
Fan blade Download PDFInfo
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- CN205243935U CN205243935U CN201521137819.9U CN201521137819U CN205243935U CN 205243935 U CN205243935 U CN 205243935U CN 201521137819 U CN201521137819 U CN 201521137819U CN 205243935 U CN205243935 U CN 205243935U
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Abstract
The utility model provides a fan blade, blade more than cylindrical wheel hub and a slice, wherein be provided with the shaft coupling structure on the fan blade, wheel hub's face of cylinder diameter is D1, blade cross section that the different face of cylinder that is D chi with the endocentric diameter in wheel hub's the face of cylinder was cut is crossing for upper curve la and lower curve lb with the windward side A of blade and lee side B respectively, the central line lc who is simultaneously the blade cross section with the circle center connection line of the tangent circle of upper curve la and lower curve lb, the line of central line lc both ends point is chord length L1, length is b, chord length L1 is setting angle of blade beta with the contained angle of perpendicular air inlet direction terminal surface, the maximum gauge tmax of blade and chord length length b's ratio are relative thickness t in the central line L1 normal direction, be t=tmaxb. The utility model discloses a to setting angle of blade beta, chord length length b and relative thickness t's design, flow field after the fan blade rotates is more smooth and easy, efficiency is higher, the noise is lower and the reliability is stronger, has improved the amount of wind.
Description
Technical field
The utility model relates to fan technical field, relates in particular to a kind of fan vane.
Background technology
Along with the enhancing of global environmental consciousness, market proposes more and more higher requirement for the environmental protection index of fan,Efficiency and noise are two important indicators wherein, and also having the life-span of fan is also the performance that market is paid close attention toIndex, the quality of corresponding fan blade design is that these three important indicators of decision are reached fine or not key factor. At present,Commercially available fan vane also not yet has at established angle β, chord length length b and the relative thickness t in the each cross section of bladeOptimum coupling design, makes the efficiency of fan and noise index undesirable, particularly a lot of fan blade leaves on marketThe relative thickness t of sheet is almost unchanged from inside to outer rim, easily causes the internal stress of blade to be concentrated, windFlow field after leaf rotates has some setbacks, efficiency is low, noise is large and reliability is low; And life-span of fan blade is producedRaw great damage, has shortened the life-span of fan.
Utility model content
The problems such as the flow field after rotating for existing fan blade has some setbacks, efficiency is low, noise is large and reliability is low,The purpose of this utility model is to propose a kind of fan vane.
For reaching this object, the utility model by the following technical solutions:
A kind of fan vane, comprises that cylindrical bosses and a slice, with blade, are wherein provided with shaft coupling on fan bladeStructure, blade is distributed on described wheel hub along even circumferential, and the face of cylinder diameter of described wheel hub is D1, with wheelThe concentric diameter in the face of cylinder of hub is DΧThe leaf cross-section that intercepts of the different faces of cylinder respectively with the meeting of bladeWind face A and lee face B intersect for upper curve LaAnd lower curve Lb, simultaneously with upper curve LaAnd lower curve LbThe circle center line connecting of tangent circle is the center line L of leaf cross-sectionc, center line LcThe line of two-end-point is chord length L1，Length is b, chord length L1Be blade angle β with the angle of vertical air intake direction end face, center line L1In normal directionThe maximum ga(u)ge t of blademaxWith the ratio of chord length length b be relative thickness t, i.e. t=tmax/ b, definition Χ=D1/DΧ, in the time that Χ equals respectively 1.0,0.9,0.8,0.7,0.6,0.5,0.4,0.32, correspondingβ value be: 38 °, 35.99 °, 32.29 °, 28.56 °, 24.79 °, 20.96 °, 17.11 °,12.5 °, corresponding b value be respectively 43.85mm, 43.38mm, 46.64mm, 50.98mm, 57.65mm,68.31mm, 86.57mm, 122.26mm, corresponding relative thickness t value is 5.25%, 4.91%, 4.44%,3.96％、3.38％、2.77％、2.1％、1.46％。
Preferably, described wheel hub and described blade integrated formed structure.
Preferably, described blade is made up of plastic material.
Preferably, described blade is made up of metal material.
The present invention, by the design to blade angle β, chord length length b and relative thickness t, makes each bladeCross-section is in optimum efficiency position, flow field after fan blade rotates is more smooth and easy, efficiency is higher, noise lower withAnd reliability is stronger, has improved air quantity; And the successively decreasing of relative thickness t, be beneficial to the dispersion of blade interior stress,Extend the life-span of fan blade.
Brief description of the drawings
Fig. 1 is the schematic perspective view of fan vane of the present invention;
Fig. 2 is the front schematic view of fan vane of the present invention;
Fig. 3 is the aerofoil section schematic diagram of fan vane of the present invention.
Wherein: 1-wheel hub, 2-blade, the 3-face of cylinder, 4-leaf cross-section, La-upper curve, Lb-lower curve,Lc-center line, β-blade angle, L1-chord length, b-chord length length, t-relative thickness, A-windward side, the B-back of the bodyWind face, D1The face of cylinder diameter of-wheel hub, DΧThe diameter on-different the faces of cylinder concentric from the face of cylinder of wheel hub.
Detailed description of the invention
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by detailed description of the invention.
As shown in Figure 1, Figure 2 and Figure 3, a kind of fan vane, comprises the above leaf of cylindrical bosses 1 and a sliceSheet 2, is wherein provided with coupling structure on fan blade, and blade 2 is distributed on described wheel hub 1 along even circumferential, instituteThe face of cylinder diameter of stating wheel hub is D1, it is characterized in that: the diameter concentric with the face of cylinder of wheel hub 1 is DΧ'sThe leaf cross-section 4 that the different faces of cylinder 3 intercept is respectively with the windward side A of blade with lee face B is crossing isUpper curve LaAnd lower curve Lb, simultaneously with upper curve LaAnd lower curve LbThe circle center line connecting of tangent circle is bladeThe center line L of cross sectionc, center line LcThe line of two-end-point is chord length L1, length is b, chord length L1With vertical enterThe angle of wind direction end face is blade angle β, center line LcThe maximum ga(u)ge t of normal direction blademaxWith chord lengthThe ratio of length b is relative thickness t, i.e. t=tmax/ b, definition Χ=D1/DΧ, when Χ equal respectively 1.0,0.9,0.8,0.7,0.6,0.5,0.4,0.32 o'clock, corresponding β value was: 38 °, 35.99 °,32.29 °, 28.56 °, 24.79 °, 20.96 °, 17.11 °, 12.5 °, corresponding b value is respectively43.85mm、43.38mm、46.64mm、50.98mm、57.65mm、68.31mm、86.57mm、122.26mm, corresponding relative thickness t value is 5.25%, 4.91%, 4.44%, 3.96%, 3.38%, 2.77%,2.1％、1.46％。
Along with increasing progressively of Χ value, by the design to blade angle β, chord length length b and relative thickness t,Make each leaf cross-section in optimum efficiency position, fan blade rotate after flow field more smooth and easy, efficiency is higher,Noise is lower and reliability is stronger, has improved air quantity; And the successively decreasing of relative thickness t, be beneficial in bladeThe dispersion of portion's stress, the life-span of prolongation fan blade.
Preferably, described wheel hub 1 and described blade 2 integrated formed structures. Integrated formed structure is simple, carriesHigh installation effectiveness; And it is loosening that described blade 2 is difficult in rotation process, increases the service life.
Preferably, described blade 1 is made up of plastic material. Plastics are lightweight, cost is low.
Preferably, described blade 2 is made up of metal material. Metal long service life.
Know-why of the present utility model has below been described in conjunction with specific embodiments. These are described just for understandingRelease principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection domain.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate this realityBy other novel detailed description of the invention, within these modes all will fall into protection domain of the present utility model.
Claims (4)
1. a fan vane, comprises that cylindrical bosses and a slice, with blade, are wherein provided with connection on fan bladeAxle construction, blade is distributed on described wheel hub along even circumferential, and the face of cylinder diameter of described wheel hub is D1, itsBe characterised in that: the diameter concentric with the face of cylinder of wheel hub is DΧThe leaf cross-section that intercepts of the different faces of cylinderCrossing with the windward side A of blade and lee face B is respectively upper curve LaAnd lower curve Lb, while and upper curveLaAnd lower curve LbThe circle center line connecting of tangent circle is the center line L of leaf cross-sectionc, center line LcThe company of two-end-pointLine is chord length L1, length is b, chord length L1Be blade angle β with the angle of vertical air intake direction end face,Center line L1The maximum ga(u)ge t of normal direction blademaxWith the ratio of chord length length b be relative thickness t,t＝tmax/ b, definition Χ=D1/DΧ, when Χ equal respectively 1.0,0.9,0.8,0.7,0.6,0.5,0.4,0.32 o'clock, corresponding β value was: 38 °, 35.99 °, 32.29 °, 28.56 °, 24.79 °,20.96 °, 17.11 °, 12.5 °, corresponding b value be respectively 43.85mm, 43.38mm, 46.64mm,50.98mm, 57.65mm, 68.31mm, 86.57mm, 122.26mm, corresponding relative thickness tValue is 5.25%, 4.91%, 4.44%, 3.96%, 3.38%, 2.77%, 2.1%, 1.46%.
2. fan vane according to claim 1, is characterized in that: described wheel hub and described blade oneForming structure.
3. fan vane according to claim 1, is characterized in that: described blade is made of plastics.
4. fan vane according to claim 1, is characterized in that: described blade is by metal material systemBecome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137819.9U CN205243935U (en) | 2015-12-30 | 2015-12-30 | Fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137819.9U CN205243935U (en) | 2015-12-30 | 2015-12-30 | Fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205243935U true CN205243935U (en) | 2016-05-18 |
Family
ID=55943021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521137819.9U Active CN205243935U (en) | 2015-12-30 | 2015-12-30 | Fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205243935U (en) |
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2015
- 2015-12-30 CN CN201521137819.9U patent/CN205243935U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 1234 / F, factory building no.7-5, Xinhui Road, Wusha community, Daliang street, Shunde District, Foshan City, Guangdong Province Patentee after: CHG ELECTRICAL APPLIANCE Co.,Ltd. Address before: 528322, No. 7, Jian Zhong Road, Leliu Chung Yong Industrial Zone, Shunde District, Guangdong, Foshan Patentee before: CHG ELECTRICAL APPLIANCE Co.,Ltd. |
|
| CP03 | Change of name, title or address |