CN218467907U - Axial flow fan blade with bionic structure and axial flow fan - Google Patents
Axial flow fan blade with bionic structure and axial flow fan Download PDFInfo
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- CN218467907U CN218467907U CN202221921685.XU CN202221921685U CN218467907U CN 218467907 U CN218467907 U CN 218467907U CN 202221921685 U CN202221921685 U CN 202221921685U CN 218467907 U CN218467907 U CN 218467907U
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Abstract
The utility model discloses an axial fan blade and axial fan of biomimetic structure, including wheel hub and a plurality of blade, the blade is enclosed by blade root, outer fringe, leading edge and trailing edge, and a side of blade is the pressure surface, and another side is the suction surface, and the blade root is connected with wheel hub, and the trailing edge includes pressure surface trailing edge and suction surface trailing edge, and pressure surface trailing edge and suction surface trailing edge set up respectively at pressure surface and suction surface, its characterized in that: the pressure surface tail edge is dug to be equipped with by a plurality of first recesses, form first fin between two adjacent first recesses, suction surface tail edge is dug to be equipped with by a plurality of second recesses, form the second fin between two adjacent second recesses, first fin and second fin are staggered, this structural arrangement can reduce the pressure differential of pressure surface and negative pressure surface, and the area of export has been increaseed, lead to the air velocity to reduce in the same time, thereby reduce the impact loss, improve the efficiency of fan blade, and the frequency that the air current drops is inconsistent in the same time step, can effectual noise reduction.
Description
The technical field is as follows:
the utility model relates to an axial compressor fan blade and axial fan of bionic structure.
Background art:
the axial flow fan blade adopted by the existing axial flow fan mainly comprises an inner diameter, an outer diameter, a front edge and a tail edge. Generally, the tail edge of a fan blade is of an arc or straight line continuous structure, the airflow speed of a pressure surface of an impeller fan blade (a blade or a fan blade) is high, the airflow speed of a suction surface is low, and the difference of the airflow speeds of the two causes a jet flow wake which falls off through the tail edge of the blade and can generate obvious falling vortex.
The invention content is as follows:
the utility model aims at providing an axial fan blade and axial fan of biomimetic structure, when can solving the air current and flowing through forward position flow direction trailing edge among the prior art, the air current receives pressure surface and suction surface pressure differential to influence, produces the separation easily, and the frequency time who drops is unanimous, and the export air current produces the confusion easily, increases the loss of impact to lead to the noise to rise, the technical problem that the efficiency reduces.
The purpose of the utility model is realized by the following technical scheme.
The utility model aims at providing a biomimetic structure's axial compressor fan blade, including wheel hub and a plurality of blade, the blade is enclosed by blade root, outer fringe, leading edge and trailing edge, and a side of blade is the pressure surface, and the another side is the suction surface, and the blade root is connected with wheel hub, and the trailing edge includes pressure surface trailing edge and suction surface trailing edge, and pressure surface trailing edge and suction surface trailing edge set up respectively at pressure surface and suction surface, its characterized in that: the pressure surface tail edge is dug to be equipped with by a plurality of first recesses, forms first fin between two adjacent first recesses, and the suction surface tail edge is dug to be equipped with by a plurality of second recesses, forms the second fin between two adjacent second recesses, and first fin and second fin are crisscross between the distribution.
The first fin and the second fin are in the same shape or different shapes.
The same shape or different shapes are wave shape or zigzag shape, etc.
The size of the first grooves is enlarged from inside to outside, and the size of the second grooves is enlarged from inside to outside.
The utility model provides an axial compressor fan blade of biomimetic structure, includes wheel hub and a plurality of blade, and the blade is enclosed by blade root, outer fringe, leading edge and trailing edge, and a side of blade is the pressure surface, and another side is the suction surface, and the blade root is connected with wheel hub, and the trailing edge includes pressure surface trailing edge and suction surface trailing edge, and pressure surface trailing edge and suction surface trailing edge set up respectively at pressure surface and suction surface, its characterized in that: a third groove which is wavy or zigzag is arranged at the tail edge of the pressure surface, and one side of the third groove is sealed at the tail edge of the suction surface; or the tail edge of the suction surface is provided with a fourth groove which is wavy or zigzag, and the tail edge of the pressure surface seals one side of the fourth groove.
An axial fan which is characterized in that: including the motor with install the axial compressor fan blade on the motor, its characterized in that: the axial flow fan blade is the axial flow fan blade.
Compared with the prior art, the utility model, following effect has:
1) The utility model provides an axial compressor fan blade of biomimetic structure, includes wheel hub and a plurality of blade, and the blade is enclosed by blade root, outer fringe, leading edge and trailing edge, and a side of blade is the pressure face, and another side is the suction surface, and the blade root is connected with wheel hub, and the trailing edge includes pressure face trailing edge and suction surface trailing edge, and pressure face trailing edge and suction surface trailing edge set up respectively at pressure face and suction surface, its characterized in that: the pressure surface tail edge is dug to be equipped with by a plurality of first recesses, form first fin between two adjacent first recesses, suction surface tail edge is dug to be equipped with by a plurality of second recesses, form the second fin between two adjacent second recesses, first fin and second fin are staggered, this structural arrangement can reduce the pressure differential of pressure surface and negative pressure surface, and the area of export has been increaseed, lead to the air velocity to reduce in the same time, thereby reduce the impact loss, improve the efficiency of fan blade, and the frequency that the air current drops is inconsistent in the same time step, can effectual noise reduction.
2) Other advantages of the present invention will be described in detail in the detailed description of the embodiments.
Description of the drawings:
FIG. 1 is a schematic flow diagram of a prior art gas flow;
fig. 2 is a perspective view provided by the first embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
fig. 4 is another perspective view of the first embodiment of the present invention;
FIG. 5 is a partial enlarged view of B in FIG. 4;
fig. 6 is a schematic view illustrating a flow direction of an air flow provided by a first embodiment of the present invention;
fig. 7 is a perspective view provided by the second embodiment of the present invention;
fig. 8 is another perspective view of the second embodiment of the present invention;
fig. 9 is a partial enlarged view of C in fig. 8;
fig. 10 is a front view provided by the second embodiment of the present invention;
FIG. 11 is a cross-sectional view E-E of FIG. 10;
fig. 12 is a perspective view provided by the third embodiment of the present invention;
fig. 13 is another perspective view of the third embodiment of the present invention;
FIG. 14 is an enlarged view of a portion D of FIG. 11;
fig. 15 is a front view provided by the third embodiment of the present invention;
fig. 16 is a cross-sectional view F-F of fig. 15.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
The first embodiment is as follows:
as shown in fig. 2 to 6, the axial-flow fan blade with a bionic structure provided in this embodiment includes a hub 2 and a plurality of blades 1, each blade 1 is surrounded by a blade root 11, an outer edge 12, a leading edge 15, and a trailing edge 16, one side surface of each blade 1 is a pressure surface 13, the other side surface is a suction surface 14, the blade root 11 is connected to the hub 2, the trailing edge 16 includes a pressure surface trailing edge 161 and a suction surface trailing edge 162, the pressure surface trailing edge 161 and the suction surface trailing edge 162 are respectively disposed on the pressure surface 13 and the suction surface 14, and the axial-flow fan blade with the bionic structure is characterized in that: the pressure surface tail edge 161 is dug to be equipped with by a plurality of first recesses 161a, form first fin 161b between two adjacent first recesses 161a, the suction surface tail edge 162 is dug to be equipped with by a plurality of second recesses 162a, form second fin 162b between two adjacent second recesses 162a, first fin 161b and second fin 162b are the staggered distribution, this structural arrangement can reduce the pressure differential of pressure surface and negative pressure surface, and enlarged the area of export, lead to the air velocity reduction in the same time, thereby reduce the impact loss, improve the efficiency of fan blade, and the frequency that the air current drops is inconsistent in the same time step, can effectual noise reduction.
The first fin 161b and the second fin 162b have the same shape or different shapes.
The same shape or different shapes are wave shape or sawtooth shape, etc.
The sizes of the first grooves 161a are increased from inside to outside, and the sizes of the second grooves 162a are increased from inside to outside, so that the wind speed pressure outside the blade can be reduced, and the noise reduction effect is achieved.
Example two:
as shown in fig. 7 to 11, an axial-flow fan blade with a bionic structure includes a hub 2 and a plurality of blades 1, each blade 1 is surrounded by a blade root 11, an outer edge 12, a front edge 15 and a tail edge 16, one side surface of each blade 1 is a pressure surface 13, the other side surface is a suction surface 14, the blade root 11 is connected with the hub 2, the tail edge 16 includes a pressure surface tail edge 161 and a suction surface tail edge 162, the pressure surface tail edge 161 and the suction surface tail edge 162 are respectively arranged on the pressure surface 13 and the suction surface 14, and the axial-flow fan blade is characterized in that: the wavy or zigzag third groove 161c is formed in the tail edge 161 of the pressure surface, one side of the third groove 161c is sealed at the tail edge 162 of the suction surface, the pressure difference between the pressure surface and the negative pressure surface can be reduced, the area of an outlet is enlarged, the air flow speed is reduced at the same time, accordingly, the impact loss is reduced, the efficiency of the fan blade is improved, the air flow falling frequency is different at the same time step, and the noise can be effectively reduced.
Example three:
as shown in fig. 12 to 16, this embodiment is a further improvement based on the second embodiment, a wave-shaped or zigzag-shaped fourth groove 162c is provided at the trailing edge 162 of the suction surface, and the trailing edge 161 of the pressure surface closes one side of the fourth groove 162c, so that the pressure difference between the pressure surface and the negative pressure surface can be reduced, the area of the outlet can be increased, the airflow velocity can be reduced at the same time, the impact loss can be reduced, the efficiency of the fan blade can be improved, and the airflow shedding frequencies at the same time step are different, so that the noise can be effectively reduced.
Example four:
the utility model provides an axial fan which characterized in that: including the motor with install the axial compressor fan blade on the motor, its characterized in that: the axial flow fan blade is the axial flow fan blade described in the first embodiment, the second embodiment or the third embodiment.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (6)
1. The utility model provides an axial compressor fan blade of biomimetic structure, including wheel hub (2) and a plurality of blade (1), blade (1) is by blade root (11), outer fringe (12), leading edge (15) and trailing edge (16) enclose, a side of blade (1) is pressure surface (13), the another side is suction surface (14), blade root (11) are connected with wheel hub (2), trailing edge (16) are including pressure surface trailing edge (161) and suction surface trailing edge (162), pressure surface trailing edge (161) and suction surface trailing edge (162) set up respectively at pressure surface (13) and suction surface (14), its characterized in that: the pressure surface tail edge (161) is dug to be equipped with by a plurality of first recesses (161 a), forms first fin (161 b) between two adjacent first recesses (161 a), and the suction surface tail edge (162) is dug to be equipped with by a plurality of second recesses (162 a), forms second fin (162 b) between two adjacent second recesses (162 a), and first fin (161 b) and second fin (162 b) are crisscross between the distribution.
2. The axial-flow fan blade with the bionic structure as claimed in claim 1, wherein: the first fin (161 b) and the second fin (162 b) have the same shape or different shapes.
3. The axial-flow fan blade with the bionic structure as claimed in claim 2, wherein: the same shape or different shapes are wave-shaped or zigzag-shaped, etc.
4. The axial-flow fan blade with the bionic structure as claimed in claim 1, 2 or 3, wherein: the sizes of the first grooves (161 a) are increased from inside to outside, and the sizes of the second grooves (162 a) are increased from inside to outside.
5. The utility model provides an axial compressor fan blade of biomimetic structure, including wheel hub (2) and a plurality of blade (1), blade (1) is by blade root (11), outer fringe (12), leading edge (15) and trailing edge (16) enclose, a side of blade (1) is pressure surface (13), the another side is suction surface (14), blade root (11) are connected with wheel hub (2), trailing edge (16) are including pressure surface trailing edge (161) and suction surface trailing edge (162), pressure surface trailing edge (161) and suction surface trailing edge (162) set up respectively at pressure surface (13) and suction surface (14), its characterized in that: a wave-shaped or sawtooth-shaped third groove (161 c) is formed in the tail edge (161) of the pressure surface, and one side of the third groove (161 c) is closed by the tail edge (162) of the suction surface; or a wave-shaped or sawtooth-shaped fourth groove (162 c) is formed in the tail edge (162) of the suction surface, and one side of the fourth groove (162 c) is closed by the tail edge (161) of the pressure surface.
6. The utility model provides an axial fan which characterized in that: including the motor with install the axial compressor fan blade on the motor, its characterized in that: the axial-flow fan blade is as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221921685.XU CN218467907U (en) | 2022-07-25 | 2022-07-25 | Axial flow fan blade with bionic structure and axial flow fan |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221921685.XU CN218467907U (en) | 2022-07-25 | 2022-07-25 | Axial flow fan blade with bionic structure and axial flow fan |
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| CN218467907U true CN218467907U (en) | 2023-02-10 |
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| CN202221921685.XU Active CN218467907U (en) | 2022-07-25 | 2022-07-25 | Axial flow fan blade with bionic structure and axial flow fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116538003A (en) * | 2023-05-15 | 2023-08-04 | 南京浩华建筑科技有限公司 | Light wind wheel structure of bionic membrane structure fan blade |
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2022
- 2022-07-25 CN CN202221921685.XU patent/CN218467907U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116538003A (en) * | 2023-05-15 | 2023-08-04 | 南京浩华建筑科技有限公司 | Light wind wheel structure of bionic membrane structure fan blade |
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