CN209818359U - Double-layer fan blade - Google Patents
Double-layer fan blade Download PDFInfo
- Publication number
- CN209818359U CN209818359U CN201920369406.5U CN201920369406U CN209818359U CN 209818359 U CN209818359 U CN 209818359U CN 201920369406 U CN201920369406 U CN 201920369406U CN 209818359 U CN209818359 U CN 209818359U
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- Prior art keywords
- fan blade
- blade
- double
- utility
- shaft hole
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- Expired - Fee Related
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- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a double-deck fan blade, including first fan blade, second fan blade and wheel hub, the top movable mounting of second fan blade has first fan blade, be connected through wheel hub between first fan blade and the second fan blade, the installation shaft hole has all been seted up on the surface of first fan blade and second fan blade, and the aperture in installation shaft hole is the same. The utility model discloses a set up first fan blade, second fan blade, installation shaft hole and wheel hub, solved current double-deck fan blade inefficiency, the energy consumption is great, and the great problem of noise.
Description
Technical Field
The utility model relates to a domestic fan technical field specifically is a double-deck fan blade.
Background
The existing double-layer fan blade is only simply locked and fixed by adding a second layer of fan blade on a first layer of fan blade. The blade number of the blades is not matched, the blade installation angles are matched, and the optimal combination is made for the gap between the two layers of blades. The efficiency, energy consumption and noise of the fan cannot be further optimized, so that a double-layer fan blade is urgently needed to solve the existing problems.
Has the following disadvantages: the existing double-layer fan blade has low efficiency, large energy consumption and large noise.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a to prior art not enough, the utility model provides a double-deck fan blade has solved current double-deck fan blade inefficiency, and the energy consumption is great, and the great problem of noise.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a double-deck fan blade, includes first fan blade, second fan blade and wheel hub, the top movable mounting of second fan blade has first fan blade, be connected through wheel hub between first fan blade and the second fan blade, the installation shaft hole has all been seted up on the surface of first fan blade and second fan blade, and the aperture in installation shaft hole is the same.
Preferably, the number of the blades of the first fan blade and the number of the blades of the second fan blade are both odd, and the blades are uniformly distributed.
Preferably, the diameter of the first fan blade is D1, the diameter of the second fan blade is D2, and D2/D1 is 0.1-0.5.
Preferably, the axial gap between the first fan blade and the second fan blade is δ, and δ/D1 is 0.01-0.5.
Preferably, the first fan blade and the second fan blade can be made of plastics.
(III) advantageous effects
The utility model provides a double-deck fan blade possesses following beneficial effect: the utility model has the advantages that the utility model has high efficiency, reduced energy consumption and reduced noise by arranging the first fan blade, the second fan blade, the mounting shaft hole and the hub, and solves the problems of low efficiency, large energy consumption and large noise of the existing double-layer fan blade, when in use, the second fan blade is arranged above the first fan blade, the mounting shaft hole of the center is consistent, the cross section of the blade, which is obtained by cutting different concentric cylindrical surfaces of the first fan blade and the hub, is respectively intersected with the windward side and the leeward side of the blade to form an upper curve La1 and a lower curve Lb1, meanwhile, the circle center connecting line tangent to La1 and Lb1 is the center line Lc1 of the cylindrical surface of the blade, the connecting line of two end points of the center line Lc1 is the chord length L1, the included angle between the chord length L1 and the end surface in the vertical air inlet direction is the mounting angle beta 1 of the blade, and in the same way, aiming at the second fan blade, the cross section of the windward side and the leeward side of the blade to form an upper, simultaneously with La2 and Lb2 tangent circle centre of a circle line be blade cross section's central line Lc2, the line of central line Lc2 both ends point is chord length L2, the contained angle of chord length L2 and perpendicular air inlet direction terminal surface is blade installation angle beta 2, the axial clearance of first fan blade and second fan blade is the delta to when using, make the utility model discloses have efficient, reduced the power consumption, and reduced the noise.
Drawings
Fig. 1 is a bottom view of the present invention;
FIG. 2 is a schematic view of the top view of the internal structure of the present invention;
FIG. 3 is a schematic view of the structure of the rotation direction of the present invention;
FIG. 4 is a side sectional view of the present invention;
fig. 5 is a side view of the present invention;
fig. 6 is a top view of the present invention.
The reference numbers in the figures are: 1. a first fan blade; 2. a second fan blade; 3. installing the shaft hole; 4. a hub.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-6, the utility model provides a technical solution: a double-layer fan blade comprises a first fan blade 1, a second fan blade 2 and a hub 4, wherein the top of the second fan blade 2 is movably provided with the first fan blade 1, the blades of the first fan blade 1 and the second fan blade 2 are odd and are uniformly distributed, the diameter of the first fan blade 1 is D1, the diameter of the second fan blade 2 is D2, D2/D1 is 0.1-0.5, the axial gap between the first fan blade 1 and the second fan blade 2 is delta, the delta/D1 is 0.01-0.5, the first fan blade 1 and the second fan blade 2 are connected through the hub 4, the surfaces of the first fan blade 1 and the second fan blade 2 are provided with an installation shaft hole 3, the hole diameters of the installation shaft hole 3 are the same, the first fan blade 1 and the second fan blade 2 can be made of plastics, when the double-layer fan blade is used, the second fan blade 2 is placed above the first fan blade 1, the installation shaft hole 3 is the same as the center, the concentric cross sections of the blades and the windward side and the leeward side of the blades of the hub of the cylindrical surface of the first fan The intersecting is an upper curve La1 and a lower curve Lb1, and meanwhile, a line of centers of circles tangent to La1 and Lb1 is a center line Lc1 of the cross section of the blade, a line of two end points of the center line Lc1 is a chord length L1, an included angle between the chord length L1 and the end surface in the vertical air intake direction is a blade installation angle β 1, similarly, a line of centers of circles tangent to La2 and Lb2 is a center line Lc2 of the cross section of the blade, a line of two end points of the center line Lc2 is a chord length L2, an included angle between the chord length L2 and the end surface in the vertical air intake direction is a blade installation angle β 2, and an axial gap between the first blade 1 and the second blade 2 is δ.
The working principle is as follows: when the wind power generation device is used, the second fan blade 2 is placed above the first wind blade 1, the mounting shaft hole 3 in the middle center is consistent, the cross section of the first fan blade 1, which is cut by different concentric cylindrical surfaces of the cylindrical surface of the hub 4, is respectively intersected with the windward surface and the leeward surface of the blade to form an upper curve La1 and a lower curve Lb1, meanwhile, the center line of circles tangent to La1 and Lb1 is a center line Lc1 of the cross section of the blade, the line of two ends of the center line Lc1 is a chord length L1, the included angle between the chord length L2 and the end surface in the vertical wind inlet direction is a blade mounting angle beta 1, similarly, the line of circles tangent to different concentric cylindrical surfaces of the second fan blade 2 and the cylindrical surface of the hub 4 is respectively intersected with the windward surface and the leeward surface of the blade to form an upper curve La2 and a lower curve Lb2, the line of circles tangent to La2 and Lb2 is a center line of the cross section of the blade to form a center line 2, the center line of the, the axial clearance of first fan blade 1 and second fan blade 2 is the delta to when using, make the utility model discloses have efficient, reduced the power consumption, and reduced the noise.
To sum up can, the utility model discloses a set up first fan blade 1, second fan blade 2, installation shaft hole 3 and wheel hub 4, solved current double-deck fan blade inefficiency, the energy consumption is great, and the great problem of noise.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a double-deck fan blade, includes first fan blade (1), second fan blade (2) and wheel hub (4), its characterized in that: the fan blade is characterized in that a first fan blade (1) is movably mounted at the top of the second fan blade (2), the first fan blade (1) is connected with the second fan blade (2) through a hub (4), mounting shaft holes (3) are formed in the surfaces of the first fan blade (1) and the second fan blade (2), and the diameters of the mounting shaft holes (3) are the same.
2. The double-layer fan blade as claimed in claim 1, wherein: the blades of the first fan blade (1) and the second fan blade (2) are odd and are uniformly distributed.
3. The double-layer fan blade as claimed in claim 1, wherein: the diameter of the first fan blade (1) is D1, the diameter of the second fan blade (2) is D2, and D2/D1 is 0.1-0.5.
4. The double-layer fan blade as claimed in claim 1, wherein: the axial clearance between the first fan blade (1) and the second fan blade (2) is delta, and delta/D1 is 0.01-0.5.
5. The double-layer fan blade as claimed in claim 1, wherein: the first fan blade (1) and the second fan blade (2) can be made of plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920369406.5U CN209818359U (en) | 2019-03-21 | 2019-03-21 | Double-layer fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920369406.5U CN209818359U (en) | 2019-03-21 | 2019-03-21 | Double-layer fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209818359U true CN209818359U (en) | 2019-12-20 |
Family
ID=68876758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920369406.5U Expired - Fee Related CN209818359U (en) | 2019-03-21 | 2019-03-21 | Double-layer fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209818359U (en) |
-
2019
- 2019-03-21 CN CN201920369406.5U patent/CN209818359U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210111 Address after: 528300 Lunjiao sub district office, Shunde District, Foshan City, Guangdong Province Patentee after: GUANGDONG DINGHE ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 528000 Block B10-1-02, London Intensive Industrial Zone, Shunde District, Foshan City, Guangdong Province Patentee before: GUANGDONG AIHE TECHNOLOGY Co.,Ltd. |
|
| 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: 20191220 |