CN203348159U - Fixing structure for vanes of axial fan - Google Patents
Fixing structure for vanes of axial fan Download PDFInfo
- Publication number
- CN203348159U CN203348159U CN 201320357944 CN201320357944U CN203348159U CN 203348159 U CN203348159 U CN 203348159U CN 201320357944 CN201320357944 CN 201320357944 CN 201320357944 U CN201320357944 U CN 201320357944U CN 203348159 U CN203348159 U CN 203348159U
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- CN
- China
- Prior art keywords
- vanes
- blade
- axial fan
- positioning hole
- retaining ring
- Prior art date
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Abstract
The utility model relates to a fixing structure for vanes of an axial fan. The fixing structure for the vanes of the axial fan comprises a hub and the vanes, wherein the roots of the vanes are connected with the hub. The fixing structure for the vanes of the axial fan is characterized in that the tips of the vanes are simultaneously connected with a fixing ring, and the fixing ring synchronously rotates along with the vanes. The fixing ring is additionally arranged at the periphery of the vanes, the vanes are connected at the tips to form a whole, the connecting strength of the vanes of the axial fan is guaranteed, and the service life of the axial fan is guaranteed. By means of the method, the fixing structure for the vanes of the axial fan has the advantages that the cost of the hub is lowered; positioning devices are arranged at the roots and the tips of the vanes, and the size accuracy of products is guaranteed; the vanes and the hub are simple in structure and convenient to machine, and the labor intensity for workers is low; the fixing ring not only plays a role in fixing the vanes, but also improves the performance of the axial fan; the fixing ring and the tips of the vanes do not move relatively, namely the tips have no gap.
Description
Technical field
the utility model relates to the universal machine field, particularly relates 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 purpose of this utility model is to provide a kind of fixed structure of axial fan blade.
for achieving the above object, the technical solution adopted in the utility model 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 utility model compared with prior art has following advantages:
the utility model, 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 utility model;
the structural representation that accompanying drawing 2 is the utility model Leaf.
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 utility model is 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.
wheel hub 1, blade 2 are fixed into one with retaining ring 3, and wheel hub 1 band moving vane 2, retaining ring 3 synchronously rotate, and between blade 2 and synchronizing ring 3, there is no relative movement, are equivalent to blade tip 21 for zero clearance.
above-described embodiment is only explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
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 |
|---|---|---|---|
| CN 201320357944 CN203348159U (en) | 2013-06-21 | 2013-06-21 | Fixing structure for vanes of axial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320357944 CN203348159U (en) | 2013-06-21 | 2013-06-21 | Fixing structure for vanes of axial fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203348159U true CN203348159U (en) | 2013-12-18 |
Family
ID=49748066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320357944 Expired - Fee Related CN203348159U (en) | 2013-06-21 | 2013-06-21 | Fixing structure for vanes of axial fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203348159U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307026A (en) * | 2013-06-21 | 2013-09-18 | 江苏富丽华通用设备有限公司 | Fixing structure of axial fan blades |
| CN108119396A (en) * | 2018-01-26 | 2018-06-05 | 珠海格力电器股份有限公司 | A kind of flabellum and fan |
-
2013
- 2013-06-21 CN CN 201320357944 patent/CN203348159U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307026A (en) * | 2013-06-21 | 2013-09-18 | 江苏富丽华通用设备有限公司 | Fixing structure of axial fan blades |
| CN108119396A (en) * | 2018-01-26 | 2018-06-05 | 珠海格力电器股份有限公司 | A kind of flabellum and fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20160621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |