CN221257218U - Bird feather-like shaped axial-flow wind wheel and axial-flow fan - Google Patents
Bird feather-like shaped axial-flow wind wheel and axial-flow fan Download PDFInfo
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- CN221257218U CN221257218U CN202323100956.2U CN202323100956U CN221257218U CN 221257218 U CN221257218 U CN 221257218U CN 202323100956 U CN202323100956 U CN 202323100956U CN 221257218 U CN221257218 U CN 221257218U
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- 210000003746 feather Anatomy 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses an axial-flow wind wheel with a bird feather-like shape and an axial-flow fan. The blades are connected with the hub, and a plurality of blades are circumferentially distributed around the hub; the blade is provided with a wave structure which undulates up and down along a direction away from the axis of the hub, and the side of the wave structure away from the front edge of the blade forms the rear edge of the blade. In the rotating process of the bird feather-like axial-flow wind wheel, the wave structure on the blade can effectively refine the separation vortex on the suction surface of the blade, reduce the energy intensity of the separation vortex, improve the airflow state of the boundary layer, realize air flow layering, reduce turbulence and inhibit vortex noise, thereby effectively reducing wind wheel noise.
Description
Technical Field
The utility model relates to the technical field of axial flow fans, in particular to an axial flow wind wheel imitating bird feather modeling and an axial flow fan.
Background
In an outdoor unit of an air conditioner or other ventilation devices, various axial flow fan blades are generally used to realize the circulation flow of air, and a basic structure of a conventional main flow fan blade is composed of a hub serving as a rotation shaft and a plurality of blades radially arranged at the periphery of the hub, and the air is flown in from the front edges of the blades by the driving of a motor, and is blown out from the rear edge portions of the blades after the blades are boosted, thereby forming a pressure surface and a suction surface. In the running process of the existing axial flow fan blade, a large-size separation vortex is easy to form on the suction surface of the blade, a large amount of energy is contained in the separation vortex, high pneumatic noise is generated during crushing, the total noise value of the fan is increased, and the overall performance of the air conditioner is influenced.
Disclosure of utility model
The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the utility model provides an axial flow wind wheel with a bird feather-like shape and an axial flow fan.
In a first aspect, an embodiment of the present utility model provides an axial-flow wind turbine with a bird feather-like shape, including:
A hub;
The blades are connected with the hub, and a plurality of blades are circumferentially distributed around the hub;
The blade is provided with a wave structure, one side of the wave structure, which is far away from the front edge of the blade, forms the rear edge of the blade, and the rear edge of the blade is wavy.
The bird feather-like modeling axial flow wind wheel provided by the embodiment of the utility model has at least the following technical effects: in the rotating process of the bird feather-like axial-flow wind wheel, the wave structure on the blade can effectively refine the separation vortex on the suction surface of the blade, reduce the energy intensity of the separation vortex, improve the airflow state of the boundary layer, realize air flow layering, reduce turbulence and inhibit vortex noise, thereby effectively reducing wind wheel noise.
According to some embodiments of the utility model, the wave height of the wave structure decreases gradually from the trailing edge of the blade towards the leading edge of the blade.
According to some embodiments of the utility model, on a projection plane perpendicular to the hub axis, the area of the wave structure is S2, and the total area of the blades is S1, satisfying:
According to some embodiments of the utility model, on a projection plane perpendicular to the hub axis, a side of the wave structure away from the hub center is located on a first circle, the first circle is arranged concentrically with the hub, the diameter of the bird feather-like axial flow wind wheel is D1, the diameter of the first circle is D2, and the following conditions are satisfied:
According to some embodiments of the utility model, the side of the wave structure near the center of the hub is located on a second circle, the second circle is concentric with the hub, the diameter of the hub is D3, and the diameter of the second circle is D4, so that: 0.1× (D1-D3) +D3.ltoreq.D4.ltoreq.0.3× (D1-D3) +D3.
According to some embodiments of the utility model, on a projection plane perpendicular to the axis of the hub, a side edge of the wave structure away from the center of the hub is a first arc, two ends of the first arc are respectively an A point and an E point, the A point is located on the rear edge of the blade, and the arc center of the first arc is concentric with the hub.
According to some embodiments of the utility model, on a projection plane perpendicular to the axis of the hub, a second arc is arranged on a side edge of the wave structure, which is close to the center of the hub, two ends of the second arc are respectively a point B and a point F, the point B is positioned on the rear edge of the blade, and the arc center of the second arc is arranged concentrically with the hub.
According to some embodiments of the utility model, the chord length of the first camber line is greater than the chord length of the second camber line.
According to some embodiments of the utility model, a third arc is arranged on one side of the wave structure away from the trailing edge of the blade, two ends of the third arc are respectively an E point and an F point, and an arc center of the third arc is arranged on one side of the third arc away from the trailing edge of the blade.
In a second aspect, an embodiment of the present utility model further provides an axial flow fan, including the bird feather-like shaped axial flow wind wheel according to the embodiment of the first aspect of the present utility model.
The axial flow fan provided by the embodiment of the utility model has at least the following technical effects: the axial flow fan adopts the bird feather-like axial flow wind wheel, in the rotating process of the bird feather-like axial flow wind wheel, the wave structure on the blades can effectively refine the separation vortex on the suction surface of the blades, reduce the energy intensity of the separation vortex, improve the gas flow state of the boundary layer, realize the layering of the air flow, reduce the turbulence and inhibit the vortex noise, thereby effectively reducing the noise generated by the axial flow fan.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural view of an axial flow wind turbine with simulated bird feather modeling according to some embodiments of the present utility model;
FIG. 2 is a top view of an axial flow wind turbine simulating bird feather modeling in accordance with some embodiments of the present utility model;
fig. 3 is a schematic view of another angle of an axial flow wind turbine with simulated bird feather configuration according to some embodiments of the present utility model.
Reference numerals:
Hub 100, blade 110, leading edge 111, trailing edge 112, wave structure 120, first circle 131, second circle 132, third circle 133, first camber line 141, second camber line 142, third camber line 143.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, plural means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and the above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Embodiments of the present utility model will be further described below with reference to the accompanying drawings.
According to some embodiments of the present utility model, referring to fig. 1-3, a bird feather-like shaped axial flow wind turbine includes a hub 100 and blades 110. The blades 110 are coupled to the hub 100, and a plurality of blades 110 are circumferentially distributed about the hub 100. The blade 110 is provided with a wave structure 120, the wave structure 120 undulates up and down in a direction away from the axis of the hub 100, one side of the wave structure 120 away from the front edge 111 of the blade 110 constitutes the rear edge 112 of the blade 110, and the rear edge 112 is wave-shaped.
It can be appreciated that in the rotation process of the bird feather-like axial-flow wind wheel, when the airflow passes through the surface of the blade 110, the wave structure 120 on the blade 110 can effectively refine the separation vortex on the suction surface of the blade 110, reduce the energy intensity of the separation vortex, improve the airflow state of the boundary layer, realize the layering of the airflow, reduce the turbulence and inhibit the vortex noise, thereby effectively reducing the wind wheel noise.
It should be noted that, on a projection plane perpendicular to the axis of the hub 100, the trailing edge 112 of the blade 110 is wavy; at the same time, the trailing edge 112 of the blade 110 is also wavy in a plane of projection parallel to the axis of the hub 100.
Preferably, the wave height of the wave structure 120 decreases gradually from the trailing edge 112 of the blade 110 towards the leading edge 111 of the blade 110. In the rotation process of the bird feather-like axial-flow wind wheel, the air flows through the wave structure 120 after passing through the front edge 111 of the blade 110 and flows towards the rear edge 112 of the blade 110, and in the process, the wave height of the wave structure 120 is gradually increased, and the air flow is guided to gradually generate layering phenomenon, so that turbulence is reduced.
According to some embodiments of the utility model, referring to fig. 2, on a projection plane perpendicular to the axis of the hub 100, the area of the wave structure 120 is S2, and the total area of the blades 110 is S1, satisfying: Thereby ensuring that the wave structure 120 has enough area to achieve the effects of thinning the air flow and improving the air flow to realize air flow layering, and simultaneously avoiding the work area from being influenced by the overlarge wave structure 120 to reduce the work efficiency.
It will be appreciated that the wave structure 120 is bounded by four endpoints A, B, E and F, namely by the first arc 141, the second arc 142, the third arc 143, and the portion of the trailing edge 112.
According to some embodiments of the present utility model, referring to fig. 2, on a projection plane perpendicular to an axis of the hub 100, a side of the wave structure 120 away from a center of the hub 100 is located on a first circle 131, the first circle 131 is concentrically arranged with the hub 100, a diameter of the bird feather-like shaped axial flow wind wheel is D1, and a diameter of the first circle 131 is D2, so that: to ensure that the wave structure 120 is sufficiently close to the outer edges of the blades 110 or to form the outer edges of the blades 110 with the outer edges of the wave structure 120 so that gas flowing over the surface of the blades 110 can flow through the wave structure 120.
It will be appreciated that the outer edges of the blades 110 lie on a third circle 133, the diameter of the third circle 133 being D1.
According to some embodiments of the present utility model, referring to fig. 2, a side of the wave structure 120 near the center of the hub 100 is located on a second circle 132, the second circle 132 is arranged concentrically with the hub 100, the diameter of the hub 100 is D3, and the diameter of the second circle 132 is D4, satisfying: 0.1xD1-D3+D3.ltoreq.D4.ltoreq.0.3xD1-D3+D3 to ensure that the wave structure 120 is sufficiently close to the outer periphery of the hub 100 to enable gas flowing over the surface of the blade 110 to flow through the wave structure 120, while the wave structure 120 is at a distance from the hub 100 for ease of processing.
According to some embodiments of the present utility model, referring to fig. 2, on a projection plane perpendicular to an axis of the hub 100, a side of the wave structure 120 away from the center of the hub 100 is a first arc 141, and two ends of the first arc 141 are a point and an E point, respectively, the a point is located on the trailing edge 112 of the blade 110, and an arc center of the first arc 141 is concentrically arranged with the hub 100 to match an outer edge of the blade 110, so as to guide gas flow stratification.
According to some embodiments of the present utility model, referring to fig. 2, on a projection plane perpendicular to the axis of the hub 100, the side of the wave structure 120 near the center of the hub 100 is a second arc line 142, two ends of the second arc line 142 are respectively a point B and a point F, the point B is located on the trailing edge 112 of the blade 110, and the arc center of the second arc line 142 is concentrically arranged with the hub 100 to match the outer edge of the blade 110, so as to guide the gas flow layering.
Preferably, referring to FIG. 2, the chord length of the first camber line 141 is greater than the chord length of the second camber line 142 to match the outer edge of the blade 110 and the outer periphery of the hub 100, i.e., the wave structure 120 becomes progressively longer circumferentially in a direction away from the center of the hub 100.
According to some embodiments of the present utility model, referring to fig. 2, a side of the wave structure 120 away from the trailing edge 112 of the blade 110 is a third arc line 143, two ends of the third arc line 143 are respectively an E point and an F point, an arc center of the third arc line 143 is located at a side of the third arc line 143 away from the trailing edge 112 of the blade 110, and the third arc line 143 is matched with the leading edge 111 of the blade 110 to guide gas to smoothly flow through the wave structure 120.
In the description of the present specification, reference to the term "some embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An axial flow wind wheel imitating bird feather modeling, which is characterized by comprising:
A hub (100);
-blades (110), said blades (110) being connected to said hub (100), a plurality of said blades (110) being circumferentially distributed around said hub (100);
the blade (110) is provided with a wave structure (120), one side of the wave structure (120) away from the front edge (111) of the blade (110) forms the rear edge (112) of the blade (110), and the rear edge (112) of the blade (110) is wavy.
2. The bird feather-like shaped axial flow wind wheel according to claim 1, wherein the wave height of the wave structure (120) gradually decreases from the trailing edge (112) of the blade (110) towards the leading edge (111) of the blade (110).
3. The bird feather-like shaped axial flow wind wheel according to claim 1, wherein on a projection plane perpendicular to the axis of the hub (100), the area of the wave structure (120) is S2, and the total area of the blades (110) is S1, satisfying:
4. The bird feather-like shaped axial flow wind wheel according to claim 1, wherein on a projection plane perpendicular to an axis of the hub (100), a side of the wave structure (120) away from a center of the hub (100) is located on a first circle (131), the first circle (131) is concentrically arranged with the hub (100), a diameter of the bird feather-like shaped axial flow wind wheel is D1, and a diameter of the first circle (131) is D2, so that:
5. The bird feather-like shaped axial flow wind wheel according to claim 4, wherein one side of the wave structure (120) close to the center of the hub (100) is located on a second circle (132), the second circle (132) is concentrically arranged with the hub (100), the diameter of the hub (100) is D3, and the diameter of the second circle (132) is D4, so that: 0.1× (D1-D3) +D3.ltoreq.D4.ltoreq.0.3× (D1-D3) +D3.
6. The bird feather-like shaped axial flow wind wheel according to claim 1, wherein on a projection plane perpendicular to an axis of the hub (100), a side edge of the wave structure (120) away from the center of the hub (100) is a first arc line (141), two ends of the first arc line (141) are respectively an A point and an E point, the A point is located on a trailing edge (112) of the blade (110), and an arc center of the first arc line (141) is concentrically arranged with the hub (100).
7. The bird feather-like shaped axial flow wind wheel according to claim 6, wherein on a projection plane perpendicular to an axis of the hub (100), a side edge of the wave structure (120) close to the center of the hub (100) is a second arc line (142), two ends of the second arc line (142) are respectively a point B and a point F, the point B is located on a trailing edge (112) of the blade (110), and an arc center of the second arc line (142) is concentrically arranged with the hub (100).
8. The bird feather-like shaped axial flow wind turbine of claim 7, wherein the chord length of the first camber line (141) is greater than the chord length of the second camber line (142).
9. The bird feather-like shaped axial flow wind wheel according to claim 7, wherein one side of the wave structure (120) away from the rear edge (112) of the blade (110) is a third arc line (143), two ends of the third arc line (143) are respectively an E point and an F point, and an arc center of the third arc line (143) is located on one side of the third arc line (143) away from the rear edge (112) of the blade (110).
10. An axial flow fan, characterized by comprising the bird feather-like shaped axial flow wind wheel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323100956.2U CN221257218U (en) | 2023-11-16 | 2023-11-16 | Bird feather-like shaped axial-flow wind wheel and axial-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323100956.2U CN221257218U (en) | 2023-11-16 | 2023-11-16 | Bird feather-like shaped axial-flow wind wheel and axial-flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221257218U true CN221257218U (en) | 2024-07-02 |
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ID=91660979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323100956.2U Active CN221257218U (en) | 2023-11-16 | 2023-11-16 | Bird feather-like shaped axial-flow wind wheel and axial-flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221257218U (en) |
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2023
- 2023-11-16 CN CN202323100956.2U patent/CN221257218U/en active Active
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