CN102116315A - Fan blade - Google Patents
Fan blade Download PDFInfo
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- CN102116315A CN102116315A CN2011100518182A CN201110051818A CN102116315A CN 102116315 A CN102116315 A CN 102116315A CN 2011100518182 A CN2011100518182 A CN 2011100518182A CN 201110051818 A CN201110051818 A CN 201110051818A CN 102116315 A CN102116315 A CN 102116315A
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- blade
- fan
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- chord length
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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
- 239000006185 dispersion Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention relates to a fan blade, which comprises a cylindrical hub and more than one blade, wherein the radius of the cylindrical surface of the hub 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, defining beta = R0/RΧ. The invention ensures that the cross section of each blade is in the optimum parameter state through the optimum matching design of the blade installation angle beta, the chord length b and the relative thickness t, thereby integrally improving the flow efficiency of fan air, reducing the noise of the fan, and in addition, the decreasing of the relative thickness t is beneficial to the dispersion of the internal stress of the blade and prolonging the service life of the fan blade.
Description
Technical field
The present invention relates to a kind of fan fan blade, belong to the improvement technology of fan fan blade.
Background technique
Enhancing along with 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, also having the life-span of fan also is the performance index that market is paid close attention to, and the quality of corresponding fan blade design is the key factor of these three important indicators of decision.At present, commercially available fan fan blade does not also have optimum matching Design as yet at established angle β, chord length b and the relative thickness t in each cross section of blade, make the efficiency and the noise index of fan undesirable, particularly the relative thickness t of a lot of leaf blades arrives almost no change of outer rim internally on the market, cause the internal stress of blade to be concentrated easily, life-span to fan blade produces living damage greatly, thereby has shortened the life-span of fan.
Summary of the invention
The objective of the invention is to provides a kind of efficiency height by established angle β, chord length b and the relative thickness t in each cross section of Optimum Matching design leaf blade, and noise is low, the fan fan blade that the life-span is long.
Technological scheme of the present invention 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
ΧThe leaf cross-section that different cylndrical surface intercepted and to intersect be first curve and second curve two surfaces of 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
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, definition Χ=R
0/ R
ΧWhen Χ equals 0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0 respectively, corresponding β value is: 13.42 °, 12.87 °, 11.96 °, 10.84 °, 9.61 °, 8.52 °, 7.76 °, 6.81 °, corresponding b value is respectively 68.21mm, 70.07 mm, 74.08 mm, 80.4 mm, 88.26 mm, 98.12 mm, 107.66 mm, 114.16 mm, and corresponding relative thickness t value is 5.13%, 4.85%, 4.45%, 3.98%, 3.4%, 2.96%, 2.6%, 2.37%.
Described fan blade is made by plastics or metallic material.
The present invention is by the Optimum Matching design to blade angle β, chord length b and relative thickness t, make each leaf cross-section be in the optimal parameter state, thereby the whole flow efficiency that has improved fan air, reduce fan noise, relative thickness t's successively decreases in addition, help the dispersion of blade interior stress, prolong the life-span of fan blade.
Description of drawings
Fig. 1 is the schematic perspective view of fan fan blade of the present invention;
Fig. 2 is the front schematic view of fan fan blade of the present invention;
Fig. 3 is the aerofoil section schematic representation of fan fan blade of the present invention.
Embodiment
With regard to the structure drawings and Examples fan fan blade of the present invention is described further below.
As shown in Figure 1, 2, 3, fan fan blade of the present invention comprises cylindrical bosses 1 and three blades 2, and the cylndrical surface radius of wheel hub 1 is R
0, the radius concentric with the cylndrical surface of wheel hub 1 is R
ΧThe leaf cross-section that intercepted of different cylndrical surface 34 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, definition Χ=R
0/ R
ΧWhen Χ equals 0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0 respectively, corresponding β value is: 13.42 °, 12.87 °, 11.96 °, 10.84 °, 9.61 °, 8.52 °, 7.76 °, 6.81 °, corresponding b value is respectively 68.21mm, 70.07 mm, 74.08 mm, 80.4 mm, 88.26 mm, 98.12 mm, 107.66 mm, 114.16 mm, and corresponding relative thickness t value is 5.13%, 4.85%, 4.45%, 3.98%, 3.4%, 2.96%, 2.6%, 2.37%.Described fan blade is made by plastics or metallic material.In the present embodiment, along with increasing progressively of Χ value, by Optimum Matching design to blade angle β, chord length b and relative thickness t, make each leaf cross-section be in the optimal parameter state, thereby the whole flow efficiency that has improved fan air reduces fan noise, and relative thickness t's successively decreases in addition, help the dispersion of blade interior stress, prolong 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 (1) is R
0, it is characterized in that with the concentric radius in the cylndrical surface of wheel hub (1) be R
ΧThe leaf cross-section (4) that intercepted of different cylndrical surface (3) 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, definition Χ=R
0/ R
ΧWhen Χ equals 0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0 respectively, corresponding β value is: 13.42 °, 12.87 °, 11.96 °, 10.84 °, 9.61 °, 8.52 °, 7.76 °, 6.81 °, corresponding b value is respectively 68.21mm, 70.07 mm, 74.08 mm, 80.4 mm, 88.26 mm, 98.12 mm, 107.66 mm, 114.16 mm, and corresponding relative thickness t value is 5.13%, 4.85%, 4.45%, 3.98%, 3.4%, 2.96%, 2.6%, 2.37%.
2. according to right 1 described fan fan blade, it is characterized in that described fan blade made by plastics or metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100518182A CN102116315A (en) | 2011-03-04 | 2011-03-04 | Fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100518182A CN102116315A (en) | 2011-03-04 | 2011-03-04 | Fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102116315A true CN102116315A (en) | 2011-07-06 |
Family
ID=44215209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100518182A Pending CN102116315A (en) | 2011-03-04 | 2011-03-04 | Fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102116315A (en) |
Cited By (6)
| 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 |
| CN105422509A (en) * | 2014-09-19 | 2016-03-23 | 重庆海光玻璃钢制品有限公司 | 2500m frost prevention machine blade |
| CN105889130A (en) * | 2014-09-19 | 2016-08-24 | 重庆海光玻璃钢制品有限公司 | 2500m frost protection machine rear wind direction blade |
| CN105889129A (en) * | 2014-09-19 | 2016-08-24 | 重庆海光玻璃钢制品有限公司 | 2100m frost protection machine blade |
| CN108980104A (en) * | 2017-05-31 | 2018-12-11 | 美的集团股份有限公司 | Axial flow blower and air conditioner with it |
| CN113250997A (en) * | 2021-06-08 | 2021-08-13 | 浙江三新科技有限公司 | Fan blade |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6315521B1 (en) * | 1999-11-30 | 2001-11-13 | Siemens Automotive Inc. | Fan design with low acoustic tonal components |
| RU2206799C1 (en) * | 2001-11-29 | 2003-06-20 | Общество с ограниченной ответственностью "НОВАЯ ЭНЕРГИЯ" | Axial-blow blower |
| US20050249597A1 (en) * | 2004-01-12 | 2005-11-10 | Siemens Vdo Automotive Inc. | Low pressure fan with high-flow |
| KR100798103B1 (en) * | 2006-05-04 | 2008-01-24 | 주식회사 에어로네트 | Axial Fan and Multi Sectioning Design Method therefor |
| CN201225328Y (en) * | 2008-06-05 | 2009-04-22 | 南京意航新技术发展有限公司 | Plastic axial cooling fan |
| CN101672298A (en) * | 2009-09-28 | 2010-03-17 | 上海日用-友捷汽车电气有限公司 | Fan blade of cooling fan |
| CN101922471A (en) * | 2010-09-30 | 2010-12-22 | 重庆长安汽车股份有限公司 | Fan blade of cooling fan of engine |
| CN202117985U (en) * | 2011-03-04 | 2012-01-18 | 美的集团有限公司 | Fan blade |
-
2011
- 2011-03-04 CN CN2011100518182A patent/CN102116315A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6315521B1 (en) * | 1999-11-30 | 2001-11-13 | Siemens Automotive Inc. | Fan design with low acoustic tonal components |
| RU2206799C1 (en) * | 2001-11-29 | 2003-06-20 | Общество с ограниченной ответственностью "НОВАЯ ЭНЕРГИЯ" | Axial-blow blower |
| US20050249597A1 (en) * | 2004-01-12 | 2005-11-10 | Siemens Vdo Automotive Inc. | Low pressure fan with high-flow |
| KR100798103B1 (en) * | 2006-05-04 | 2008-01-24 | 주식회사 에어로네트 | Axial Fan and Multi Sectioning Design Method therefor |
| CN201225328Y (en) * | 2008-06-05 | 2009-04-22 | 南京意航新技术发展有限公司 | Plastic axial cooling fan |
| CN101672298A (en) * | 2009-09-28 | 2010-03-17 | 上海日用-友捷汽车电气有限公司 | Fan blade of cooling fan |
| CN101922471A (en) * | 2010-09-30 | 2010-12-22 | 重庆长安汽车股份有限公司 | Fan blade of cooling fan of engine |
| CN202117985U (en) * | 2011-03-04 | 2012-01-18 | 美的集团有限公司 | Fan blade |
Cited By (7)
| 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 |
| CN105422509A (en) * | 2014-09-19 | 2016-03-23 | 重庆海光玻璃钢制品有限公司 | 2500m frost prevention machine blade |
| CN105889130A (en) * | 2014-09-19 | 2016-08-24 | 重庆海光玻璃钢制品有限公司 | 2500m frost protection machine rear wind direction blade |
| CN105889129A (en) * | 2014-09-19 | 2016-08-24 | 重庆海光玻璃钢制品有限公司 | 2100m frost protection machine blade |
| CN108980104A (en) * | 2017-05-31 | 2018-12-11 | 美的集团股份有限公司 | Axial flow blower and air conditioner with it |
| CN113250997A (en) * | 2021-06-08 | 2021-08-13 | 浙江三新科技有限公司 | Fan blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
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 Applicant after: MIDEA GROUP Co.,Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Applicant before: Midea Group |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: MEIDI GROUP CO. LTD. TO: MIDEA GROUP CO., LTD. |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110706 |