CN210623195U - Axial fan with reinforcing rib structure - Google Patents
Axial fan with reinforcing rib structure Download PDFInfo
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- CN210623195U CN210623195U CN201921351274.XU CN201921351274U CN210623195U CN 210623195 U CN210623195 U CN 210623195U CN 201921351274 U CN201921351274 U CN 201921351274U CN 210623195 U CN210623195 U CN 210623195U
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Abstract
An axial flow fan with a reinforcing rib structure comprises blades, wherein more than one first reinforcing rib and one second reinforcing rib are respectively arranged on the blades in the longitudinal direction and the transverse direction, so that a plurality of bosses are formed on the blades, and an airflow guide area is formed between every two adjacent bosses; more than one second reinforcing rib extends from one side or two sides of the first reinforcing rib, and the first reinforcing rib and the second reinforcing rib respectively present arc-shaped or multi-segment line combined spline curves; the first reinforcing rib and the second reinforcing rib are respectively arranged on the suction surface of the blade, the central lines of the first reinforcing rib and the second reinforcing rib are respectively arc-shaped or spline curves combined by multiple sections of lines, and the bending directions of the central lines of the first reinforcing rib and the second reinforcing rib on the blade are respectively consistent with the direction of a surface streamline of the blade. The utility model discloses effectively strengthen the intensity of blade, when the blade operates, reduce moving resistance, and then reduce the fan consumption.
Description
Technical Field
The utility model relates to an axial fan specifically is an axial fan with strengthening rib structure.
Background
The blades receive resistance from air during rotation, and if the resistance is too large, power consumption of the fan increases. The blade is generally provided with the reinforcing ribs to increase the strength of the blade, but the reinforcing ribs are arranged in a single mode, and some reinforcing ribs are arranged at the root of the blade and only play a role in protection. And thus, is in need of further improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rational in infrastructure, the consumption is lower, intensity is higher, effectively reduces the fan energy consumption to and improve the axial fan that has strengthening rib structure of blade intensity, in order to overcome the weak point among the prior art.
The axial flow fan with the reinforcing rib structure comprises blades, wherein more than one first reinforcing rib and one second reinforcing rib are respectively arranged on the blades in the longitudinal direction and the transverse direction, so that a plurality of bosses are formed on the blades, and an airflow guide area is formed between every two adjacent bosses; wherein, more than one second strengthening rib extends out to first strengthening rib one side or both sides, and first strengthening rib and second strengthening rib are circular-arc or the spline curve of polyline combination respectively. The multi-segment line includes a circular arc and a straight line.
The first reinforcing rib and the second reinforcing rib increase the strength and the rigidity of the blade, reduce the deformation of the blade during the working operation of the axial flow fan and reduce the risk of the blade cracking.
The small boss structures on the surfaces of the first reinforcing rib, the second reinforcing rib and the blade can generate turbulence when the blade rotates, so that a boundary layer on the surface of the blade is damaged, the resistance of the blade to air is reduced, and the power consumption of the fan is reduced.
The first reinforcing rib and the second reinforcing rib are respectively arranged on the suction surface of the blade, the central lines of the first reinforcing rib and the second reinforcing rib are respectively arc-shaped or spline curves combined by multiple sections of lines, and the bending directions of the central lines of the first reinforcing rib and the second reinforcing rib on the blade are respectively consistent with the direction of a surface streamline of the blade.
As the bending direction of the central line of the reinforcing rib is consistent with the streamline direction of the surface of the blade, the rotating direction of the reinforcing rib is consistent with the rotating direction of the blade when the blade rotates, so that the aerodynamic resistance of the reinforcing rib is reduced.
The two ends of the first reinforcing rib extend to the transverse or longitudinal edge of the blade respectively, and the second reinforcing rib is separated from the side edge of the first reinforcing rib and extends to the longitudinal edge of the blade, so that the strength of the inner side of the blade is increased, and the strength of the edge of the blade is also increased.
The second ribs branch off the side of the first rib 1/4, 1/2 or 3/4, and the second rib on one side of the first rib forms an angle a with the first rib, the angle a being 12 ° to 60 °.
The second reinforcing rib on one side of the first reinforcing rib is provided with a third reinforcing rib which is longitudinally arranged on the blade.
The cross sections of the first, second and third reinforcing ribs are all rectangular, trapezoidal, triangular, semicircular or polygonal, the sizes of the first, second and third reinforcing ribs are respectively 1-3 times of the maximum thickness of the blade, the cross section area of the second reinforcing rib is 50% -70% of the cross section area of the first reinforcing rib, and the cross section area of the third reinforcing rib is 25% -50% of the cross section area of the first reinforcing rib.
And a third reinforcing rib is connected between two adjacent second reinforcing ribs on one side of the first reinforcing rib, so that two adjacent second reinforcing ribs and the third reinforcing rib form a closed loop.
The third bead diverges from 1/2 from the second bead on one side of the first bead and is connected in that direction to 1/3 of an adjacent second bead.
The third strengthening rib sets up the suction surface at the blade, and the third strengthening rib central line is circular-arc or the spline curve of multistage line combination respectively, and the crooked direction of third strengthening rib central line on the blade is unanimous with this blade surface streamline direction respectively to reduce the aerodynamic resistance of strengthening rib.
The utility model discloses a first, second and third strengthening rib increase blade intensity and rigidity, and the blade that reduces axial fan during operation warp to and reduce the cracked risk of blade.
The small boss structures on the surfaces of the first reinforcing rib, the second reinforcing rib, the third reinforcing rib and the blade can generate turbulence when the blade rotates, so that a boundary layer on the surface of the blade is damaged, the resistance of the blade to air is reduced, and the power consumption of the fan is reduced.
The reinforcing rib structure is a reinforcing rib based on a vein bionic structure, the reinforcing rib is designed according to a bionics principle, and compared with a common reinforcing rib, the reinforcing rib structure has better blade strength and fluid performance.
Drawings
Fig. 1 is a schematic structural view of a blade according to a first embodiment of the present invention, wherein the blade is provided with a first reinforcing rib and a second reinforcing rib.
Fig. 2 is a schematic perspective view of a blade of an axial flow fan according to a first embodiment of the present invention.
Fig. 3 is a schematic structural view of the back of a blade of an axial flow fan according to a first embodiment of the present invention.
Fig. 4 is a schematic structural view of a blade according to a second embodiment of the present invention, wherein the blade is provided with a first, a second and a third reinforcing ribs.
In the figure, 1 is a blade, 2 is a first reinforcing rib, 3 is a second reinforcing rib, 4 is a third reinforcing rib, and a is an angle.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
First embodiment
Referring to fig. 1-3, an axial flow fan with a reinforcing rib structure includes a blade 1, the blade 1 is respectively provided with more than one first reinforcing rib 2 and one second reinforcing rib 3 in the longitudinal and transverse directions, so that a plurality of bosses are formed on the blade 1, and an airflow guiding area is formed between two adjacent bosses; wherein, first strengthening rib 2 one side or both sides extend out more than one second strengthening rib 3, and first strengthening rib 2 and second strengthening rib 3 are circular-arc or the spline curve of multistage line combination respectively. The multi-segment line includes a circular arc and a straight line.
The first reinforcing ribs 2 and the second reinforcing ribs 3 increase the strength and rigidity of the blade 1, reduce the deformation of the blade during the working operation of the axial flow fan, and reduce the risk of the blade 1 being cracked.
The small boss structures on the surfaces of the first reinforcing ribs 2, the second reinforcing ribs 3 and the blades 1 can generate turbulence when the blades 1 rotate, so that the boundary layer on the surface of each blade 1 is damaged, the resistance of the blades 1 to air is reduced, and the power consumption of the fan is reduced.
First strengthening rib 2 and second strengthening rib 3 set up the suction surface at blade 1 respectively, the central line of first strengthening rib 2 and second strengthening rib 3 is circular-arc or the spline curve of multistage line combination respectively, the crooked direction of first strengthening rib 2 and 3 central lines of second strengthening rib on the blade 1 is unanimous with 1 surface streamline direction of this blade respectively, blade 1 can produce the air current when rotatory, and the crooked direction of first strengthening rib 2 and 3 central lines of second strengthening rib are unanimous with 1 surface streamline direction of blade, it receives pneumatic resistance to reduce first strengthening rib 2 and second strengthening rib 3.
The two ends of the first reinforcing rib 2 extend to the transverse edge or the longitudinal edge of the blade 1 respectively, and the second reinforcing rib 3 is divided from the side edge of the first reinforcing rib 2 and extends to the longitudinal edge of the blade 1. The 2 one ends of first strengthening rib of this implementation extend to the one end of 1 vertical edges of blade respectively, and the 2 other ends of first strengthening rib extend to on the 1 horizontal edges of blade.
The second rib 3 is flanked by 1/4, 1/2 or 3/4 of the first rib 2, and the second rib 3 on the side of the first rib 2 forms an angle a with the first rib 2, the angle a being 12 ° to 60 °.
Second embodiment
Referring to fig. 4, an axial flow fan having a reinforcing rib structure is different from the first embodiment in that the second reinforcing ribs 3 on one side of the first reinforcing ribs 2 are provided with the third reinforcing ribs 4, and the third reinforcing ribs 4 are longitudinally provided on the blades 1.
The cross sections of the first, second and third reinforcing ribs 2, 3 and 4 are all rectangular, terraced, triangular, semicircular or polygonal, the sizes of the first, second and third reinforcing ribs 2, 3 and 4 are respectively 1-3 times of the maximum thickness of the blade 1, the cross section area of the second reinforcing rib 3 is 50-70% of the cross section area of the first reinforcing rib 2, and the cross section area of the third reinforcing rib 4 is 25-50% of the cross section area of the first reinforcing rib 2.
And a third reinforcing rib 4 is connected between two adjacent second reinforcing ribs 3 on one side of the first reinforcing rib 2, so that two adjacent second reinforcing ribs 3 and the third reinforcing rib 4 form a closed loop.
The third reinforcing bead 4 is branched from 1/2 of the second reinforcing bead 3 on the side of the first reinforcing bead 2, and the third reinforcing bead 4 is connected to 1/3 of the adjacent second reinforcing bead 3 in this direction.
The third strengthening rib 4 sets up the suction surface at blade 1, and the 4 central lines of third strengthening rib are circular-arc or the spline curve of multistage line combination respectively, and the 4 central lines of third strengthening rib on the blade 1 crooked direction respectively with this blade 1 surface streamline direction unanimity to reduce third strengthening rib 4 and receive pneumatic resistance.
Other parts not described are the same as those of the first embodiment, and are not described in detail here.
The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and the scope of the invention is to be protected. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. An axial flow fan with a reinforcing rib structure comprises blades (1), and is characterized in that the blades (1) are respectively provided with more than one first reinforcing rib (2) and one second reinforcing rib (3) in the longitudinal direction and the transverse direction, so that a plurality of bosses are formed on the blades (1), and an airflow guide area is formed between every two adjacent bosses; wherein, first strengthening rib (2) one side or both sides extend out more than one second strengthening rib (3), and first strengthening rib (2) and second strengthening rib (3) are circular-arc or the spline curve of multistage line combination respectively.
2. The axial flow fan with the rib structure according to claim 1, wherein the first ribs (2) and the second ribs (3) are respectively provided on the suction surface of the blade (1), the center lines of the first ribs (2) and the second ribs (3) are respectively in a spline curve of a circular arc shape or a combination of multiple segments, and the bending directions of the center lines of the first ribs (2) and the second ribs (3) on the blade (1) are respectively consistent with the surface streamline direction of the blade (1).
3. The axial flow fan with the reinforcing rib structure as set forth in claim 1, wherein both ends of the first reinforcing rib (2) are extended to the lateral or longitudinal edges of the blade (1), respectively, and the second reinforcing rib (3) is branched from the side of the first reinforcing rib (2) and extended to the longitudinal edges of the blade (1).
4. The axial flow fan with the rib structure according to claim 2, wherein the second rib (3) is branched from the side of the first rib (2)1/4, 1/2 or 3/4, and the second rib (3) on the side of the first rib (2) forms an angle a with the first rib (2), the angle a being 12 ° to 60 °.
5. The axial flow fan with a reinforcing rib structure according to any one of claims 1 to 3, wherein the second reinforcing rib (3) on one side of the first reinforcing rib (2) is provided with a third reinforcing rib (4), and the third reinforcing rib (4) is longitudinally provided on the blade (1).
6. The axial flow fan with the rib structure according to claim 5, wherein the first, second and third ribs (2, 3, 4) each have a rectangular, trapezoidal, triangular, semicircular or polygonal cross section, the first, second and third ribs (2, 3, 4) each have a size 1 to 3 times the maximum thickness of the blade (1), the second rib (3) has a cross-sectional area 50 to 70% of the cross-sectional area of the first rib (2), and the third rib (4) has a cross-sectional area 25 to 50% of the cross-sectional area of the first rib (2).
7. The axial flow fan with the reinforcing rib structure as claimed in claim 5, wherein a third reinforcing rib (4) is connected between two adjacent second reinforcing ribs (3) on one side of the first reinforcing rib (2) so that the two adjacent second reinforcing ribs (3) and the third reinforcing rib (4) form a closed loop.
8. The axial flow fan with the reinforcing rib structure as claimed in claim 7, wherein the third reinforcing rib (4) is branched from 1/2 of the second reinforcing rib (3) at one side of the first reinforcing rib (2), and the third reinforcing rib (4) is connected to 1/3 of the adjacent second reinforcing rib (3) in the direction.
9. The axial flow fan with the rib structure according to claim 8, wherein the third ribs (4) are provided on the suction surface of the blade (1), the center lines of the third ribs (4) are respectively in the shape of a circular arc or a spline curve of a combination of multiple segments, and the bending direction of the center line of the third rib (4) on the blade (1) is respectively consistent with the surface streamline direction of the blade (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351274.XU CN210623195U (en) | 2019-08-19 | 2019-08-19 | Axial fan with reinforcing rib structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351274.XU CN210623195U (en) | 2019-08-19 | 2019-08-19 | Axial fan with reinforcing rib structure |
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| Publication Number | Publication Date |
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| CN210623195U true CN210623195U (en) | 2020-05-26 |
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| CN201921351274.XU Active CN210623195U (en) | 2019-08-19 | 2019-08-19 | Axial fan with reinforcing rib structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454435A (en) * | 2019-08-19 | 2019-11-15 | 广东顺威精密塑料股份有限公司 | A kind of aerofoil fan with reinforcing rib structure |
-
2019
- 2019-08-19 CN CN201921351274.XU patent/CN210623195U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454435A (en) * | 2019-08-19 | 2019-11-15 | 广东顺威精密塑料股份有限公司 | A kind of aerofoil fan with reinforcing rib structure |
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