CN201236842Y - Fan blade - Google Patents
Fan blade Download PDFInfo
- Publication number
- CN201236842Y CN201236842Y CNU2008200512796U CN200820051279U CN201236842Y CN 201236842 Y CN201236842 Y CN 201236842Y CN U2008200512796 U CNU2008200512796 U CN U2008200512796U CN 200820051279 U CN200820051279 U CN 200820051279U CN 201236842 Y CN201236842 Y CN 201236842Y
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- CN
- China
- Prior art keywords
- blade
- angle
- fan
- point
- hub
- 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.)
- Expired - Fee Related
Links
- 238000005452 bending Methods 0.000 claims description 20
- 238000000465 moulding Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 238000009418 renovation Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a fan blade. The blade comprises a cylindrical hub (1) and more than one blade (2), wherein the radius of the cylindrical surface of the hub is R, the radius of the cylindrical surface concentric with the cylindrical surface of the hub is R, the connecting line of the midpoints of all chord lines of the blade (2) is a curve L1, the connecting line of the midpoint of the chord of the blade root of the blade (2) and the central point O of a fan blade is L2, the connecting line of the midpoint of the chord of different circles, the concentric radiuses of which are R, of the hub (1) and the central point O of the fan blade is L3, and the included angle A between L2 and L31Called the blade net bend angle; the connecting line passing through the leading edge tangent point of the blade and the central point O is L4, and the included angle A between the tangent line L5 of the leading edge tangent point a and L42Referred to as the lead edge bend angle. The utility model discloses owing to adopt the structure at preferred net crooked angle of blade, leading limit crooked angle, blade inclination, because the size of the net crooked angle of blade, leading limit crooked angle decision noise, the blade inclination plays the primary role to gas compression performance, decides the size of the amount of wind promptly, consequently, matches through the best parameter, makes the fan can reach the best amount of wind and efficiency at the during operation.
Description
Technical field
The utility model is a kind of fan fan blade, and particularly a kind of axial-flow leaf that is used for electric fan belongs to the renovation technique of fan fan blade.
Background technique
Air quantity efficient is one of main performance index of electric fan, and it is to require under certain service condition that air quantity is big, efficient is high.And the selection of the inclination angle angle of the clean bending angle of fan blade, guide margin bending angle and blade directly influences air quantity and the efficient of fan when work, and existing fan is when selecting these parameters, all fail to accomplish best parameter matching, so that fan fails to reach best air quantity and efficient when work.
The model utility content
The purpose of this utility model is to consider the problems referred to above and provides a kind of fan that makes can realize the fan fan blade that air quantity is big, efficient is high when work.The utility model design is ingenious, rational in infrastructure.
The technical solution of the utility model is: include centric leaf hub and a slice with upper blade, wheel hub cylndrical surface radius is r, the cylndrical surface radius concentric with the wheel hub cylndrical surface is R, the line of each chord line mid point of blade is curve L1, the line of the blade root wing chord mid point of blade and fan blade central point O is L2, blade cut and leaf hub concentric radius are that the wing chord mid point of different circles of R and the line of fan blade central point O are L3, the included angle A between L2 and the L3
1Be called the clean bending angle of blade; Line by blade guide margin point of contact and central point 0 is L4, the tangent line L5 of the guide margin point of contact a of this point and the included angle A of L4
2Be called the guide margin bending angle; The fan blade plane of rotation with by being that the angle Q of the string of a musical instrument of the leaf cross-section that different cylndrical surface intercepted of R is called blade angle with the concentric radius in wheel hub cylndrical surface; Wherein work as r/R and equal 0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0 o'clock, the clean bending angle A of blade
1Should be 1.11 ° mutually, 6.58 °, 8.06 °, 7.77 °, 6.57 °, 4.84 °, 2.67 °, 0 °; Guide margin bending angle A
2Should be mutually: 0 ° ,-0.8 ° ,-0.27 °, 1 °, 3.62 °, 9.29 °, 19.32 °, 47.88 °; Blade angle Q should be 14.05 ° mutually, and 16.44 °, 18.06 °, 19.02 °, 19.77 °, 20.31 °, 20.57 °, 20.63 °.Above-mentioned blade is moulding or metalwork.
The utility model is owing to adopt the structure of the clean bending angle of preferred blade, guide margin bending angle, blade tilt, because the size of the clean bending angle of blade, guide margin bending angle decision noise, blade tilt plays a major role to the gas compression performance, promptly determine the size of air quantity, therefore, by the parameter matching of the best, make fan when work, can reach best air quantity and efficient.The utility model is that a kind of design is ingenious, function admirable, convenient and practical fan fan blade.
Description of drawings
Fig. 1 is a plan structure schematic representation of the present utility model.
Fig. 2 is the side-looking structural representation of Fig. 1.
Embodiment
Embodiment:
Structural representation of the present utility model comprises that centric leaf hub 1 and uniform 2, three blades 2 of three blades and leaf hub 1 are injected into one as shown in Figure 1, 2, centric leaf hub 1 is installed on the motor by attachment hole, and be connected with motor reel, fan blade is pressed D to rotation, and A is to carrying air.Three blades 2 radially reach certain radius to the outer from leaf hub 1, blade root is distributed on the cylndrical surface of leaf hub 1, the line of blade 2 each chord line mid point is curve L1, the line of blade root wing chord mid point and fan blade central point O is L2, L3 is a blade cut with leaf hub concentric radius is the wing chord mid point of different circles of R and the line of fan blade central point O, the included angle A between L2 and the L3
1Be called the clean bending angle of blade; Line by blade guide margin point of contact and central point O is L4, the tangent line L5 of the guide margin point of contact a of this point and the included angle A of L4
2Be called the guide margin bending angle; The fan blade plane of rotation with by being that the angle Q of the string of a musical instrument of the leaf cross-section that different cylndrical surface intercepted of R is called blade angle with the concentric radius in wheel hub cylndrical surface; The ratio of wheel hub cylndrical surface radius r and the cylndrical surface R concentric with it is r/R, when r/R equals 0.3,0.4, and 0.5,0.6,0.7,0.8,0.9,1.0 o'clock, the clean bending angle A of blade
1Should be 1.11 ° mutually, 6.58 °, 8.06 °, 7.77 °, 6.57 °, 4.84 °, 2.67 °, 0 °; Guide margin bending angle A
2Should be mutually: 0 ° ,-0.8 ° ,-0.27 °, 1 °, 3.62 °, 9.29 °, 19.32 °, 47.88 °; Blade angle Q should be 14.05 ° mutually, and 16.44 °, 18.06 °, 19.02 °, 19.77 °, 20.31 °, 20.57 °, 20.63 °.Above-mentioned blade 2 is moulding or metalwork.In the present embodiment, above-mentioned blade 2 is a moulding.Because the clean bending angle A of blade
1, guide margin bending angle A
2The size of decision noise, blade tilt Q plays a major role to the gas compression performance, promptly determines air quantity, the size of wind speed, therefore, by preferred A
1, A
2, the Q value, can reach and both improve air quantity and wind speed, reduce the purpose of noise again.
Claims (2)
1, a kind of fan fan blade, include centric leaf hub (1) and a slice with upper blade (2), wheel hub cylndrical surface radius is r, the cylndrical surface radius concentric with the wheel hub cylndrical surface is R, the line of each chord line mid point of blade (2) is curve L1, the line of the blade root wing chord mid point of blade (2) and fan blade central point O is L2, and blade (2) cut is that the different round wing chord mid points of R and the line of fan blade central point O are L3 with leaf hub (1) concentric radius, and the included angle A 1 between L2 and the L3 is called the clean bending angle of blade; Line by blade guide margin point of contact and central point 0 is L4, and the tangent line L5 of the guide margin point of contact a of this point and the included angle A 2 of L4 are called the guide margin bending angle; The fan blade plane of rotation with by being that the angle Q of the string of a musical instrument of the leaf cross-section that different cylndrical surface intercepted of R is called blade angle with the concentric radius in wheel hub cylndrical surface; It is characterized in that equaling 0.3,0.4 as r/R, 0.5,0.6,0.7,0.8,0.9,1.0 o'clock, the clean bending angle A1 of blade should be 1.11 ° mutually, and 6.58 °, 8.06 °, 7.77 °, 6.57 °, 4.84 °, 2.67 °, 0 °; Guide margin bending angle A2 should be mutually: 0 °, and-0.8 ° ,-0.27 °, 1 °, 3.62 °, 9.29 °, 19.32 °, 47.88 °; Blade angle Q should be 14.05 ° mutually, and 16.44 °, 18.06 °, 19.02 °, 19.77 °, 20.31 °, 20.57 °, 20.63 °.
2, fan fan blade according to claim 1 is characterized in that above-mentioned blade (2) is moulding or metalwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200512796U CN201236842Y (en) | 2008-07-25 | 2008-07-25 | Fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200512796U CN201236842Y (en) | 2008-07-25 | 2008-07-25 | Fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201236842Y true CN201236842Y (en) | 2009-05-13 |
Family
ID=40649582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200512796U Expired - Fee Related CN201236842Y (en) | 2008-07-25 | 2008-07-25 | Fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201236842Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936308A (en) * | 2010-09-12 | 2011-01-05 | 美的集团有限公司 | Fan blade |
| CN105257597A (en) * | 2015-11-12 | 2016-01-20 | 珠海格力电器股份有限公司 | Axial flow fan and axial flow fan blades thereof |
-
2008
- 2008-07-25 CN CNU2008200512796U patent/CN201236842Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936308A (en) * | 2010-09-12 | 2011-01-05 | 美的集团有限公司 | Fan blade |
| CN105257597A (en) * | 2015-11-12 | 2016-01-20 | 珠海格力电器股份有限公司 | Axial flow fan and axial flow fan blades thereof |
| CN105257597B (en) * | 2015-11-12 | 2018-04-20 | 珠海格力电器股份有限公司 | Axial flow blower and its axial-flow leaf |
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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 Penglai Road, Beijiao Town, Foshan District, Guangdong, China, Patentee before: Midea Group |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20170725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |