CN103307026A - Fixing structure of axial fan blades - Google Patents
Fixing structure of axial fan blades Download PDFInfo
- Publication number
- CN103307026A CN103307026A CN2013102486753A CN201310248675A CN103307026A CN 103307026 A CN103307026 A CN 103307026A CN 2013102486753 A CN2013102486753 A CN 2013102486753A CN 201310248675 A CN201310248675 A CN 201310248675A CN 103307026 A CN103307026 A CN 103307026A
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- Prior art keywords
- blade
- blades
- positioning hole
- retaining ring
- wheel hub
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- 230000000295 complement effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention relates to a fixing structure of axial fan blades, which comprises a hub and a plurality of blades, wherein the roots of the blades are connected with the hub. The fixing structure is characterized in that the tips of the blades are simultaneously connected with a fixing ring, and the fixing ring and the blades rotate synchronously. According to the fixing structure, since the fixing ring is added at the peripheries of the blades, the tips of the blades are connected to form a whole; the connection strength of the fan blades is ensured; the service life of a fan is ensured; the method has the advantages that the hub cost is lowered, positioning devices are arranged at the roots and the tips of the blades, so that the product dimension precision is ensured, the blades and the hub are simple in structure and convenient to process, the labor intensity of a worker is low, the fixing ring exerts an effect of fixing the blades and can improve the performances of the fan, and no relative movement exists between the fixing ring and the tips, that is the tips have zero clearances.
Description
Technical field
the present invention relates to the universal machine field, particularly relate to a kind of fixed structure of axial fan blade.
Background technique
axial fan is that a kind of mechanical energy by rotation is converted to gas pressure and can and gas be transferred out to reach general machinery equipment cooling, the ventilation purpose, and fan impeller (fan) is the critical component of realizing transformation of energy.Owing to will realizing High Rotation Speed, the intensity of impeller is very very crucial index, has directly affected use safety and the working life of ventilator.Traditional Rotor of Axial Flow Fan mainly is comprised of wheel hub and blade, and blade pass is crossed specific mode and is fixed on wheel hub.The means of fixation of blade and wheel hub mainly contains following several:
1, blade directly is welded on wheel hub, and this mode is applicable to the metal arc plate blade usually, requires blade and wheel hub that good welding performance is arranged, and amount of finish is higher, and workman's weld horizontal has directly affected quality of product.
2, blade is with together with wheel hub is cast in, and this mode is applicable to airfoil blade usually, is applicable to small-sized axial fan, and die cost is high, and a certain point defect can cause scrapping of whole impeller.
3, blade is riveted on the blade support with the distortion leg, although the both economical practicality of this method, but the distortion leg will certainly increase the radial dimension of blade support, increase the cost of fan, and for cascade solidity larger fan, blade riveted joint place has mutual interference, to processing, brings difficulty.
4, the smaller fan for diameter, also have blade and wheel hub to make whole way, but this way has certain narrow limitation, concerning the designing requirement cascade solidity is greater than 1 fan, cannot realize.
in addition, well-known, the blade periphery can arrange a static air conducting tube, but certainly exists gap between blade tip and static air conducting tube, and blade is in the High Rotation Speed process, and interstitial area certainly exists energy leakage, forms to reflux, and fan efficiency is reduced, the noise increase.
Summary of the invention
the fixed structure that the purpose of this invention is to provide a kind of axial fan blade.
for achieving the above object, the technical solution used in the present invention is:
a kind of fixed structure of axial fan blade, comprise wheel hub, some blades, the blade root fastenings of described blade, on described wheel hub, is characterized in that: the blade tip of several described blades is connected on a retaining ring simultaneously, and described retaining ring and blade synchronization are rotated.
preferably, described retaining ring limit section has and prolongs its radially outstanding stiffening rib.
preferably, be provided with the blade tip positioning hole on described blade tip, offer the retaining ring positioning hole be complementary with described blade tip positioning hole on described retaining ring, described blade tip and retaining ring are located and fix by described blade tip positioning hole and retaining ring positioning hole.
preferably, be provided with smooth blade root positioning part on described blade root, described blade root offers the blade root positioning hole on positioning part, offer the wheel hub positioning hole be complementary with described blade root positioning hole on described wheel hub, described blade root and wheel hub are located and fix by described blade root positioning hole and wheel hub positioning hole.
preferably, described retaining ring is barrel-shaped ring.
because technique scheme is used, the present invention compared with prior art has following advantages:
the present invention, by the blade periphery, increasing retaining ring, makes blade be connected at the blade tip place, forms integral body, has guaranteed the join strength of fan blade, has guaranteed the working life of fan, this method advantage:
1, reduced the wheel hub cost;
2, blade is equipped with positioning device at blade root, blade tip place, has guaranteed the product size precision;
3, blade, wheel hub structure are simple, easy to process, and workman's labor intensity is low;
4, retaining ring had both played the effect of stator blade, can improve fan performance again; There is no relative movement between retaining ring, blade tip, being equivalent to blade tip is zero clearance.
The accompanying drawing explanation
accompanying drawing 1 is structural representation of the present invention;
accompanying drawing 2 is the structural representation of Leaf of the present invention.
wherein: 1, wheel hub; 10, wheel hub positioning hole; 2, blade; 20, blade root; 200, blade root positioning part; 201, blade root positioning hole; 21, blade tip; 210, blade tip positioning hole; 3, retaining ring; 30, retaining ring positioning hole; 31, stiffening rib.
Embodiment
below in conjunction with drawings and Examples, the invention will be further described:
the fixed structure of a kind of axial fan blade as shown in Figure 1, comprise wheel hub 1, some blades 2, and the blade root 20 of blade 2 is connected on wheel hub 1, and the blade tip 21 of several blades 2 is connected on a retaining ring 3, specifically simultaneously:
as shown in Figure 2: be provided with blade tip positioning hole 210 on blade tip 21, offer the retaining ring positioning hole 30 be complementary with blade tip positioning hole 210 on retaining ring 3, blade tip 21 is accurately located and fixes by blade tip positioning hole 210 and retaining ring positioning hole 30 with retaining ring 3, as adopted screw or rivet etc.Be provided with smooth blade root positioning part 200 on blade root 20, offer blade root positioning hole 201 on blade root positioning part 200, offer the wheel hub positioning hole 10 be complementary with blade root positioning hole 201 on wheel hub 1, blade root 20 is accurately located and fixes by blade root positioning hole 201 and wheel hub positioning hole 10 with wheel hub 1, as adopted screw or rivet etc.
in the present embodiment: retaining ring 3 is a barrel-shaped ring, is its wall thickness?-?, retaining ring 3 limit sections have and prolong its radially outstanding stiffening rib 31, play water conservancy diversion and reinforcement.
above-described embodiment is only explanation technical conceive of the present invention and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. the fixed structure of an axial fan blade, comprise wheel hub, some blades, the blade root fastenings of described blade, on described wheel hub, is characterized in that: the blade tip of several described blades is connected on a retaining ring simultaneously, and described retaining ring and blade synchronization are rotated.
2. the fixed structure of a kind of axial fan blade according to claim 1 is characterized in that: described retaining ring limit section has and prolongs its radially outstanding stiffening rib.
3. the fixed structure of a kind of axial fan blade according to claim 1, it is characterized in that: be provided with the blade tip positioning hole on described blade tip, offer the retaining ring positioning hole be complementary with described blade tip positioning hole on described retaining ring, described blade tip and retaining ring are located and fix by described blade tip positioning hole and retaining ring positioning hole.
4. the fixed structure of a kind of axial fan blade according to claim 1, it is characterized in that: be provided with smooth blade root positioning part on described blade root, described blade root offers the blade root positioning hole on positioning part, offer the wheel hub positioning hole be complementary with described blade root positioning hole on described wheel hub, described blade root and wheel hub are located and fix by described blade root positioning hole and wheel hub positioning hole.
5. the fixed structure of a kind of axial fan blade according to claim 1, it is characterized in that: described retaining ring is barrel-shaped ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102486753A CN103307026A (en) | 2013-06-21 | 2013-06-21 | Fixing structure of axial fan blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102486753A CN103307026A (en) | 2013-06-21 | 2013-06-21 | Fixing structure of axial fan blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103307026A true CN103307026A (en) | 2013-09-18 |
Family
ID=49132614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102486753A Pending CN103307026A (en) | 2013-06-21 | 2013-06-21 | Fixing structure of axial fan blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103307026A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711567A (en) * | 2013-12-19 | 2014-04-09 | 柳州柳工挖掘机有限公司 | Wind guide cover capable of reducing blade tip clearances |
| CN106560597A (en) * | 2016-05-10 | 2017-04-12 | 徐工集团工程机械有限公司 | Fan device |
| US11905965B2 (en) | 2022-03-07 | 2024-02-20 | Air Distribution Technologies Ip, Llc | Fan wheel systems and methods |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914425A (en) * | 2004-02-03 | 2007-02-14 | 斯佩尔汽车有限公司 | An axial fan |
| CN101413480A (en) * | 2008-11-18 | 2009-04-22 | 广州红鹰能源科技有限公司 | Flexible outer ring type wind power generator |
| CN102086888A (en) * | 2009-12-03 | 2011-06-08 | 罗伯特·博世有限公司 | Axial flow fan with hub isolation slots |
| CN202946446U (en) * | 2012-10-15 | 2013-05-22 | 中山市同汇机电有限公司 | Blade hub |
| CN203348159U (en) * | 2013-06-21 | 2013-12-18 | 江苏富丽华通用设备有限公司 | Fixing structure for vanes of axial fan |
-
2013
- 2013-06-21 CN CN2013102486753A patent/CN103307026A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914425A (en) * | 2004-02-03 | 2007-02-14 | 斯佩尔汽车有限公司 | An axial fan |
| CN101413480A (en) * | 2008-11-18 | 2009-04-22 | 广州红鹰能源科技有限公司 | Flexible outer ring type wind power generator |
| CN102086888A (en) * | 2009-12-03 | 2011-06-08 | 罗伯特·博世有限公司 | Axial flow fan with hub isolation slots |
| CN202946446U (en) * | 2012-10-15 | 2013-05-22 | 中山市同汇机电有限公司 | Blade hub |
| CN203348159U (en) * | 2013-06-21 | 2013-12-18 | 江苏富丽华通用设备有限公司 | Fixing structure for vanes of axial fan |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711567A (en) * | 2013-12-19 | 2014-04-09 | 柳州柳工挖掘机有限公司 | Wind guide cover capable of reducing blade tip clearances |
| CN106560597A (en) * | 2016-05-10 | 2017-04-12 | 徐工集团工程机械有限公司 | Fan device |
| CN106560597B (en) * | 2016-05-10 | 2019-09-24 | 徐工集团工程机械有限公司 | Fan assembly |
| US11905965B2 (en) | 2022-03-07 | 2024-02-20 | Air Distribution Technologies Ip, Llc | Fan wheel systems and methods |
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| PB01 | Publication | ||
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Application publication date: 20130918 |