CN202280658U - Fan blade - Google Patents
Fan blade Download PDFInfo
- Publication number
- CN202280658U CN202280658U CN2011204208443U CN201120420844U CN202280658U CN 202280658 U CN202280658 U CN 202280658U CN 2011204208443 U CN2011204208443 U CN 2011204208443U CN 201120420844 U CN201120420844 U CN 201120420844U CN 202280658 U CN202280658 U CN 202280658U
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- blade
- fan
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- 239000007769 metal material Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a fan blade, including blade more than cylindrical wheel hub and a slice, wheel hub's face of cylinder radius is R0Characterized in that the radius concentric with the cylindrical surface of the hub is RΧThe cross section of the blade obtained by cutting the different cylindrical surfaces is intersected with the two surfaces of the blade to form a first curve and a second curve, and the circle center connecting line of circles respectively tangent to the first curve and the second curve is the central line L of the cross section of the blade1Middle line L1The line connecting the two end points is the chord length L2Length b, chord length L2The included angle between the blade and the end face of the hub is a blade mounting angle beta and a central line L1Maximum thickness t of blade in normal directionmaxThe ratio of the length b of the chord length is the relative thickness t, i.e. t = tmaxB is the ratio of the total weight of the components to the total weight of the components. The utility model discloses an optimum matching design to blade installation angle beta, chord length b and relative thickness t for each blade cross section is in best efficiency position, thereby has wholly improved the flow efficiency of fan air, reduces the fan noise, and goes out when fan blade corotation or reversalThe wind effect is similar, and in addition, the relative thickness t is reduced gradually, so that the dispersion of the internal stress of the blade is facilitated, and the service life of the fan blade is prolonged.
Description
Technical field
The utility model relates to a kind of fan fan blade, belongs to the improvement technology of fan fan blade.
Background technique
People have proposed increasingly high requirement to the performance of fan; Wherein high energy efficiency, low noise and long lifetime are the concern indexs of emphasis; These three indexs have directly determined the location of fan on market, and the quality of corresponding fan blade design is the key factor that these three important indicators of decision are reached quality.At present, established angle β, chord length b and the relative thickness t of commercially available fan fan blade in each cross section of blade also do not have optimum matching Design as yet, make the efficiency of fan and noise index undesirable, and when the fan blade forward or reverse, the air-out effect of fan differs greatly.Also have the relative thickness t of a lot of leaf blades on the market arrive almost no change of outer rim internally, cause the internal stress of blade to be concentrated easily, life-span of fan blade is produced damage greatly, thereby shortened the life-span of fan.
Summary of the invention
The purpose of the utility model is to consider the problems referred to above, and the established angle β, chord length b and the relative thickness t that design each cross section of leaf blade through Optimum Matching provide a kind of efficiency high, and noise is low, the fan that the life-span is long.
The technological scheme of the utility model is: a kind of fan fan blade, comprise cylindrical bosses and a slice with upper blade, and the cylndrical surface radius of wheel hub is R
0, it is characterized in that with the concentric radius in the cylndrical surface of wheel hub be R
ΧTo intersect be first curve and second curve two surfaces of the leaf cross-section that different cylndrical surface intercepted and blade, the circle center line connecting with the circle of first curve and second contact of a curve is the center line L of leaf cross-section respectively
1, center line L
1The line of two-end-point is chord length L
2, length is b, chord length L
2With the angle of wheel hub end face be blade angle β, center line L
1Maximum blade thickness t on the normal direction
MaxWith the ratio of chord length length b be relative thickness t, i.e. t=t
Max/ b, Χ=R
0/ R
ΧWhen Χ equals 0.3,0.35,0.4,0.45,0.5,0.6,0.7,0.8,0.9,1.0 respectively; Corresponding β value is: 23.99 °, 27.43 °, 30.82 °, 33.91 °, 36.72 °, 41.54 °, 45.49 °, 48.79 °, 51.57 °, 53.63 °; Corresponding b value is respectively 94.54mm, 83.10 mm, 74.49 mm, 68.25mm, 63.59 mm, 57.18 mm, 53.00 mm, 49.90 mm, 47.49 mm, 45.82 mm, and corresponding relative thickness t value is 2.38%, 3.04%, 3.68%, 4.28%, 4.83%, 5.79%, 6.57%, 7.27%, 7.92%, 8.40%.
Said fan blade is processed by plastics or metallic material.
The utility model is through the Optimum Matching design to blade angle β, chord length b and relative thickness t; Make each leaf cross-section be in the optimum efficiency position, thereby the whole flow efficiency that has improved fan air reduce fan noise; And air-out effect is close during the fan blade forward or reverse; Successively decreasing of relative thickness t helps the dispersion of blade interior stress in addition, prolongs the life-span of fan blade.
Description of drawings
Fig. 1 is the schematic perspective view of the utility model fan fan blade;
Fig. 2 is the front schematic view of the utility model fan fan blade;
Fig. 3 is the aerofoil section schematic representation of the utility model fan fan blade;
Fig. 4 is the partial enlarged drawing at A place among Fig. 3.
Embodiment
With regard to structure accompanying drawing and embodiment the utility model fan fan blade is described further below.
Like Fig. 1,2,3, shown in 4, the utility model fan fan blade comprises cylindrical bosses 1 and ten blades 2, and the cylndrical surface radius of wheel hub 1 is R
0, with the concentric radius in the cylndrical surface of wheel hub 1 be R
ΧThe leaf cross-section that different cylndrical surface intercepted 4 to intersect with two surfaces of blade be first curve 41 and second curve 42, the circle center line connecting with the tangent circle of first curve 41 and second curve 42 is the center line L of leaf cross-section 4 respectively
1, center line L
1The line of two-end-point is chord length L
2, length is b, chord length L
2With the angle of wheel hub end face be blade angle β, center line L
1The maximum ga(u)ge t of normal direction upper blade
MaxWith the ratio of chord length length b be relative thickness t, i.e. t=t
Max/ b, the D direction is the sense of rotation of fan blade, is postive direction, in contrast be in the other direction, definition Χ=R
0/ R
ΧWhen Χ equals 0.3,0.35,0.4,0.45,0.5,0.6,0.7,0.8,0.9,1.0 respectively; Corresponding β value is: 23.99 °, 27.43 °, 30.82 °, 33.91 °, 36.72 °, 41.54 °, 45.49 °, 48.79 °, 51.57 °, 53.63 °; Corresponding b value is respectively 94.54mm, 83.10 mm, 74.49 mm, 68.25mm, 63.59 mm, 57.18 mm, 53.00 mm, 49.90 mm, 47.49 mm, 45.82 mm, and corresponding relative thickness t value is 2.38%, 3.04%, 3.68%, 4.28%, 4.83%, 5.79%, 6.57%, 7.27%, 7.92%, 8.40%.
Said fan blade is processed by plastics or metallic material.In the present embodiment; Along with increasing progressively of Χ value; Optimum Matching design through to blade angle β, chord length b and relative thickness t makes each leaf cross-section be in the optimum efficiency position, thus the whole flow efficiency that has improved fan air; Reduce fan noise, and air-out effect is close during the fan blade forward or reverse.Successively decreasing of relative thickness t helps the dispersion of blade interior stress in addition, prolongs the life-span of fan blade.
Claims (2)
1. a fan fan blade comprises cylindrical bosses (1) and a slice with upper blade (2), and the cylndrical surface radius of wheel hub is R
0, it is characterized in that with the concentric radius in the cylndrical surface of wheel hub be R
ΧTo intersect be first curve (41) and second curve (42) two surfaces of the leaf cross-section that different cylndrical surface intercepted (4) and blade, the circle center line connecting with the tangent circle of first curve (41) and second curve (42) is the center line L of leaf cross-section respectively
1, center line L
1The line of two-end-point is chord length L
2, length is b, chord length L
2With the angle of wheel hub end face be blade angle β, center line L
1Maximum blade thickness t on the normal direction
MaxWith the ratio of chord length length b be relative thickness t, i.e. t=t
Max/ b, Χ=R
0/ R
ΧWhen Χ equals 0.3,0.35,0.4,0.45,0.5,0.6,0.7,0.8,0.9,1.0 respectively; Corresponding β value is: 23.99 °, 27.43 °, 30.82 °, 33.91 °, 36.72 °, 41.54 °, 45.49 °, 48.79 °, 51.57 °, 53.63 °; Corresponding b value is respectively 94.54mm, 83.10 mm, 74.49 mm, 68.25mm, 63.59 mm, 57.18 mm, 53.00 mm, 49.90 mm, 47.49 mm, 45.82 mm, and corresponding relative thickness t value is 2.38%, 3.04%, 3.68%, 4.28%, 4.83%, 5.79%, 6.57%, 7.27%, 7.92%, 8.40%.
2. fan fan blade according to claim 1 is characterized in that said fan blade processed by plastics or metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204208443U CN202280658U (en) | 2011-10-31 | 2011-10-31 | Fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204208443U CN202280658U (en) | 2011-10-31 | 2011-10-31 | Fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280658U true CN202280658U (en) | 2012-06-20 |
Family
ID=46226828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204208443U Expired - Fee Related CN202280658U (en) | 2011-10-31 | 2011-10-31 | Fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345637A (en) * | 2011-10-31 | 2012-02-08 | 美的集团有限公司 | Fan blade |
-
2011
- 2011-10-31 CN CN2011204208443U patent/CN202280658U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345637A (en) * | 2011-10-31 | 2012-02-08 | 美的集团有限公司 | Fan blade |
| CN102345637B (en) * | 2011-10-31 | 2016-10-19 | 美的集团股份有限公司 | A kind of fan vane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
|
| CP03 | Change of name, title or address |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Patentee before: Midea Group |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: GD MIDEA ENVIRONMENT APPLIANCES MFG Co.,Ltd. Assignor: MIDEA GROUP Co.,Ltd. Contract record no.: 2013440000211 Denomination of utility model: Fan blade Granted publication date: 20120620 License type: Exclusive License Record date: 20130520 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20181031 |