CN216278654U - Efficient axial compressor fan blade - Google Patents
Efficient axial compressor fan blade Download PDFInfo
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- CN216278654U CN216278654U CN202122989259.1U CN202122989259U CN216278654U CN 216278654 U CN216278654 U CN 216278654U CN 202122989259 U CN202122989259 U CN 202122989259U CN 216278654 U CN216278654 U CN 216278654U
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Abstract
The utility model provides an efficient axial compressor fan blade, includes the impeller, and the impeller comprises wheel hub and a plurality of blade, and the shaping has a plurality of petioles on the outer wall of wheel hub, and the blade is with petiole looks rigid coupling, and the outline limit of blade comprises root edge, preceding leaf edge, leaf top edge and leaf trailing edge, and the shaping has a plurality of sawtooth on the marginal edge that the leaf trailing edge is close to leaf top edge, and the marginal shaping of leaf trailing edge and leaf top edge junction has curved breach. The improved axial flow fan blade structure is optimized, fan efficiency can be effectively improved, fan efficiency can be improved by 3%, noise generated when the fan runs is effectively reduced, and noise is reduced by 1/5 dB.
Description
The technical field is as follows:
the utility model relates to the technical field of fan blades, in particular to a high-efficiency axial flow fan blade.
Background art:
the axial flow fan has a very wide application, namely, the axial flow fan and the fan blade have the same direction of air flow, such as an electric fan, and an air conditioner outer machine fan is an axial flow type running fan. The axial flow fan mainly comprises a fan impeller and a casing, has a simple structure but high data requirement, when the impeller rotates, gas axially enters the impeller from the air inlet, is pushed by blades on the impeller to increase the energy of the gas, and then the gas is output along the blades to form axial flow airflow; in the running process of the impeller, the blades on the impeller can act with gas, the operation of the impeller can be hindered due to the action of the blades, the energy consumption is increased, the efficiency of the fan is influenced, noise can be generated, and the structure of the blades is necessary to be improved and optimized for improving the efficiency of the fan of the axial flow fan and reducing the noise.
The utility model has the following contents:
the utility model aims to provide an efficient axial flow fan blade aiming at the defects of the prior art, and the structure of the axial flow fan blade can effectively improve the efficiency of a fan and effectively reduce the noise of the fan during operation.
The utility model provides an efficient axial compressor fan blade, includes the impeller, and the impeller comprises wheel hub and a plurality of blade, and the shaping has a plurality of petioles on the outer wall of wheel hub, and the blade is with petiole looks rigid coupling, and the outline limit of blade comprises root edge, preceding leaf edge, leaf top edge and leaf trailing edge, and the shaping has a plurality of sawtooth on the marginal edge that the leaf trailing edge is close to leaf top edge, and the marginal shaping of leaf trailing edge and leaf top edge junction has curved breach.
Preferably, the outer contour edge of the notch on the blade comprises an arc-shaped bottom edge, a linear first oblique connecting edge is formed at one end of the bottom edge, the tail end of the first oblique connecting edge and the side edge of the sawtooth are formed together, a linear second oblique connecting edge is formed at the other end of the bottom edge, and the tail end of the second oblique connecting edge and the blade top edge are formed together.
Preferably, the first oblique connecting edge and the side edge of the sawtooth adjacent to the notch are on the same straight line, and the included angle between the second oblique connecting edge and the top edge of the blade is an acute angle.
Preferably, the depth of the notch on the blade is greater than the depth of the tooth groove in the sawteeth on the blade.
Preferably, the number of the blade handles on the hub is equal to the number of the blades, the blades are uniformly distributed in an annular shape around the central axis of the hub, and at least three blades are arranged on the blades.
Preferably, the included angle between the front blade edge and the blade top edge on the blade is an acute angle, and the included angle between the blade tail edge and the blade top edge is an obtuse angle.
The utility model has the beneficial effects that:
the improved axial flow fan blade structure is optimized, fan efficiency can be effectively improved, fan efficiency can be improved by 3%, noise generated when the fan runs is effectively reduced, and noise is reduced by 1/5 dB.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of an inner blade of the present invention;
FIG. 3 is a data chart of a conventional axial flow blade test;
FIG. 4 is a data chart of an axial flow blade test of the present invention.
In the figure: 1. a hub; 11. a petiole; 2. a blade; 21. the leaf root margin; 22. a leading lobe margin; 23. the leaf top edge; 24. the trailing edge of the blade; 241. saw teeth; 25. a notch; 251. a bottom edge; 252. a first oblique connecting edge; 253. and a second oblique connecting edge.
The specific implementation mode is as follows:
example (b): as shown in fig. 1 to 2, the efficient axial flow fan blade comprises an impeller, the impeller is composed of a hub 1 and a plurality of blades 2, a plurality of blade handles 11 are formed on the outer wall of the hub 1, the blades 2 are fixedly connected with the blade handles 11, the outer contour edge of each blade 2 is composed of a blade root edge 21, a front blade edge 22, a blade top edge 23 and a blade tail edge 24, a plurality of saw teeth 241 are formed on the edge of the blade tail edge 24 close to the blade top edge 23, and an arc-shaped notch 25 is formed on the edge of the intersection of the blade tail edge 24 and the blade top edge 23.
Preferably, the outer contour edge of the notch 25 on the blade 2 includes a circular arc bottom edge 251, one end of the bottom edge 251 is formed with a linear first oblique connecting edge 252, the end of the first oblique connecting edge 252 is formed with the side edge of the sawtooth 241, the other end of the bottom edge 251 is formed with a linear second oblique connecting edge 253, and the end of the second oblique connecting edge 253 is formed with the blade top edge 23.
Preferably, the first inclined connecting edge 252 and the side edge of the sawtooth 241 adjacent to the notch 25 are on the same straight line, and the angle between the second inclined connecting edge 253 and the blade top edge 23 is an acute angle.
Preferably, the depth of the notch 25 on the blade 2 is greater than the depth of the tooth slot in the saw tooth 241 on the blade 2.
Preferably, the number of the blades 11 on the hub 1 is equal to the number of the blades 2, the blades 2 are uniformly distributed around the central axis of the hub 1 in an annular shape, and at least three blades 2 are provided.
Preferably, the angle between the front blade edge 22 and the blade top edge 23 of the blade 2 is an acute angle, and the angle between the blade tail edge 24 and the blade top edge 23 is an obtuse angle.
The working principle is as follows: the utility model is an axial flow fan blade with high-efficiency noise reduction, and the main technical improvement point of the axial flow fan blade is that an arc-shaped notch 25 is additionally arranged at the junction of a blade tail edge 24 and a blade top edge 23, and the additional notch 25 can improve the efficiency of a fan and reduce the noise;
in order to verify the technical effect achieved by the axial flow fan blade, the conventional axial flow fan blade with the same structure size but without the notch 25 and the axial flow fan blade are tested under the same working condition;
the data chart of the test of the conventional axial flow fan blade is shown in fig. 3, the data chart of the test of the axial flow fan blade is shown in fig. 4, and according to the comparison of the data charts, the axial flow fan blade can effectively improve the fan efficiency by 3 percent and realize the noise reduction of 1/5 dB.
The examples are intended to illustrate the utility model, but not to limit it. The described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the present invention, and therefore, the scope of the appended claims should be accorded the full scope of the utility model as set forth in the appended claims.
Claims (6)
1. The utility model provides an efficient axial compressor fan blade, includes the impeller, and the impeller comprises wheel hub (1) and a plurality of blade (2), and the shaping has a plurality of petioles (11) on the outer wall of wheel hub (1), and blade (2) and petiole (11) looks rigid coupling, and the outline limit of blade (2) comprises root edge (21), preceding leaf edge (22), leaf top edge (23) and leaf tail edge (24), its characterized in that: a plurality of saw teeth (241) are formed on the edge of the blade tail edge (24) close to the blade top edge (23), and an arc-shaped notch (25) is formed on the edge of the intersection of the blade tail edge (24) and the blade top edge (23).
2. The efficient axial flow fan blade of claim 1, wherein: the outer contour edge of the notch (25) in the blade (2) comprises a circular arc bottom edge (251), a linear first inclined connecting edge (252) is formed at one end of the bottom edge (251), the tail end of the first inclined connecting edge (252) is formed with the side edge of the sawtooth (241), a linear second inclined connecting edge (253) is formed at the other end of the bottom edge (251), and the tail end of the second inclined connecting edge (253) is formed with the blade top edge (23).
3. The efficient axial flow fan blade of claim 2, wherein: the first inclined connecting edge (252) and the side edge of the sawtooth (241) adjacent to the notch (25) are on the same straight line, and the included angle between the second inclined connecting edge (253) and the blade top edge (23) is an acute angle.
4. The efficient axial flow fan blade of claim 2, wherein: the depth of the notch (25) on the blade (2) is greater than the depth of the tooth groove in the sawtooth (241) on the blade (2).
5. The efficient axial flow fan blade of claim 1, wherein: the number of the blade handles (11) on the hub (1) is equal to the number of the blades (2), the blades (2) are uniformly distributed in an annular shape around the central axis of the hub (1), and at least three blades are arranged on the blades (2).
6. The efficient axial flow fan blade of claim 1, wherein: the included angle between the upper front blade edge (22) and the blade top edge (23) of the blade (2) is an acute angle, and the included angle between the blade tail edge (24) and the blade top edge (23) is an obtuse angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122989259.1U CN216278654U (en) | 2021-12-01 | 2021-12-01 | Efficient axial compressor fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122989259.1U CN216278654U (en) | 2021-12-01 | 2021-12-01 | Efficient axial compressor fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216278654U true CN216278654U (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122989259.1U Active CN216278654U (en) | 2021-12-01 | 2021-12-01 | Efficient axial compressor fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216278654U (en) |
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2021
- 2021-12-01 CN CN202122989259.1U patent/CN216278654U/en active Active
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