CN221096950U - Blade for axial flow fan, axial flow fan and air conditioner outdoor unit - Google Patents
Blade for axial flow fan, axial flow fan and air conditioner outdoor unit Download PDFInfo
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- CN221096950U CN221096950U CN202322368398.1U CN202322368398U CN221096950U CN 221096950 U CN221096950 U CN 221096950U CN 202322368398 U CN202322368398 U CN 202322368398U CN 221096950 U CN221096950 U CN 221096950U
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- 238000004088 simulation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000000306 component Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
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Abstract
The application relates to the technical field of air conditioners, and discloses a blade for an axial flow fan, wherein the axial flow fan comprises a hub, the blade is arranged on the hub, and the blade comprises: blade body and pterygoid lamina. A blade body having an inner edge for being disposed on the hub and an outer edge opposite the inner edge; the wing plate is arranged on the outer edge and forms a set included angle with the outer edge; wherein, the first side of pterygoid lamina is protruding in the plane of blade body front side. Therefore, the air flow at the outermost edge of the fan blade can be effectively prevented from bypassing the fan blade and flowing back to the rear side of the fan blade, so that the strength of vortex flow of the blade tip is reduced, and the air quantity of the fan blade is improved. The application also discloses an axial flow fan and an air conditioner outdoor unit.
Description
Technical Field
The present application relates to the field of air conditioning technology, and for example, to a blade for an axial flow fan, and an air conditioning outdoor unit.
Background
An air conditioner is generally divided into an indoor unit and an outdoor unit, the outdoor unit is installed outdoors, and a compressor, an outdoor heat exchanger, a fan, etc. are installed therein to realize core components of the refrigerating cycle of the air conditioner. In the running process of the air conditioner, the outdoor heat exchanger and the outdoor environment can exchange heat rapidly through the rotation of the fan.
For example, there is provided an axial flow fan in the related art, including: hub and wing; the pressure surface side of the front edge of the wing is provided with a pressure surface wall thickness reinforcing part, the pressure surface wall thickness reinforcing part protrudes out of the pressure surface of the wing, and the front edge of the wing is provided with a corner near the wing tip. The wing panel is provided with the wall thickness reinforcing part, interference and turbulence are reduced, noise is further reduced, the wing tip adopts a forward tilting design, the surge phenomenon is solved, the rear edge of the wing panel is provided with the expansion part, and the pressure at the position is increased.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
By changing the structure of the leading edge of the vane, the air volume and noise of the fan can be improved to some extent as compared with the fan of a common structure, but the improvement effect is limited. When the fan blade rotates, pressure difference exists between the front side and the rear side of the fan blade, so that air flow at the outermost edge of the fan blade bypasses the fan blade and flows back to the rear side of the fan blade, and therefore blade tip vortex is formed, and the air quantity of the fan blade is affected.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of utility model
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a blade for an axial flow fan, the axial flow fan and an air conditioner outdoor unit, which can effectively prevent air flow at the outermost edge of a blade from bypassing the blade and flowing back to the rear side of the blade, thereby reducing the strength of vortex flow of the blade tip and improving the air quantity of the blade.
In some embodiments, the blade for an axial flow fan, the axial flow fan including a hub, the blade for being disposed on the hub, the blade comprising: blade body and pterygoid lamina. A blade body having an inner edge for being disposed on the hub and an outer edge opposite the inner edge; the wing plate is arranged on the outer edge and forms a set included angle with the outer edge; wherein, the first side of pterygoid lamina is protruding in the plane of blade body front side.
In some embodiments, the outer rim and the wing are disposed perpendicular to each other.
In some embodiments, the second side of the wing panel protrudes out of the plane of the rear side of the blade body.
In some embodiments, the ratio of the distance between the first and second sides of the vane to the radius of the blade body ranges from a value of [0.03,0.12].
In some embodiments, the blade body further has a leading edge and a trailing edge disposed opposite the leading edge between the inner edge and the outer edge, wherein the trailing edge is a saw tooth configuration.
In some embodiments, the ratio of the thickness of the airfoil to the thickness of the blade body ranges from a value of [0.7,1.3].
In some embodiments, the axial flow fan comprises: hub: the plurality of blades for the axial flow fan as in the foregoing embodiment are arranged on the hub at equal intervals centering on the central axis of the hub.
In some embodiments, the axial flow fan further comprises: the drainage ring, a plurality of blades set up in the annular ring of drainage ring.
In some embodiments, the drainage ring has an inlet and an outlet, the inlet and the outlet being connected by an annular curved surface; wherein, the diameter ratio range value of the inlet port and the outlet port is [1.1,1.5]; the ratio range value of the distance between the inlet and the outlet to the diameter of the outlet is [0.2,0.25]; the ratio range of the radius of the annular curved surface to the diameter of the outflow port is [0.26,0.3].
In some embodiments, the air conditioner outdoor unit includes the axial flow fan as in the previous embodiments.
The blade for the axial flow fan, the axial flow fan and the air conditioner outdoor unit provided by the embodiment of the disclosure can realize the following technical effects:
By providing a wing plate on the outer edge of the blade body and the first side edge of the wing plate protrudes out of the plane of the front side of the blade body. Like this, when the blade rotates, the first side of pterygoid lamina can block the most air current of blade body front side and can not let out the rear side of blade body to effectively reduce the intensity of apex vortex, make the air output increase of fan, and then promoted axial fan's energy efficiency. On the basis, the strength of the blade tip vortex is reduced, and the noise generated by the fan can be further reduced.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic view of a blade for an axial flow fan according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of another blade for an axial flow fan provided in an embodiment of the present disclosure;
FIG. 3 is a schematic view of another blade for an axial flow fan provided by an embodiment of the present disclosure;
FIG. 4 is a schematic view of an axial fan according to an embodiment of the present disclosure;
FIG. 5 is a front view of an axial fan provided by an embodiment of the present disclosure;
FIG. 6 is a schematic structural view of another axial flow fan provided by an embodiment of the present disclosure;
FIG. 7 is a front view of another axial fan provided by an embodiment of the present disclosure;
FIG. 8 is a side view of another axial flow fan provided by an embodiment of the present disclosure;
FIG. 9 is a simulated simulation of tip vortex flow in the prior art;
FIG. 10 is a simulation diagram II of a prior art tip vortex;
FIG. 11 is a simulated graph of tip vortex provided by an embodiment of the present disclosure.
Reference numerals:
10: a blade body; 11: an inner edge; 12: an outer edge; 13: a leading edge; 14: a trailing edge;
20: a wing plate; 21: a first side; 22: a second side;
30: a hub; 31: a connection part;
40: a drainage ring; 41: a flow inlet; 42: a flow outlet; 43: an annular curved surface.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.
In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.
As shown in connection with fig. 1, the presently disclosed embodiments provide a blade for an axial flow fan, the axial flow fan including a hub 30, the blade for being disposed on the hub 30, the blade including a blade body 10 and a wing 20. The blade body 10 has an inner edge 11 for being provided on the hub 30 and an outer edge 12 opposite to the inner edge 11; the wing plate 20 is arranged on the outer edge 12 and forms a set included angle with the outer edge 12; wherein the first side 21 of the wing 20 protrudes out of the plane of the front side of the blade body 10.
With the blade for the axial flow fan provided by the embodiment of the present disclosure, the wing plate 20 is provided on the outer edge of the blade body 10, and the first side edge 21 of the wing plate 20 protrudes from the plane of the front side of the blade body 10. Like this, when the blade rotates, the first side 21 of pterygoid lamina 20 can block the majority air current of blade body 10 front side can not let out the rear side of blade body 10 to effectively reduce the intensity of apex vortex, make the air output increase of fan, and then promoted axial fan's energy efficiency. On the basis, the strength of the blade tip vortex is reduced, and the noise generated by the fan can be further reduced.
In the disclosed embodiment, the blade body 10 has an inner edge 11 and an outer edge 12. The inner edge 11 of the blade body 10 is fixedly connected with the hub 30, so that the hub 30 can drive the blade body 10 to rotate. The outer edge 12 is disposed opposite to the inner edge 11 and is a region where a vortex is mainly generated. Here, the inner edge 11 and the outer edge 12 refer to edges of different sides of the blade body 10.
When the conventional axial flow fan rotates, one side (front side) of the blade is a positive pressure surface, and the other side (rear side) of the blade is a negative pressure surface, namely, the front side and the rear side of the blade have pressure difference delta P. Due to the pressure difference DeltaP, the airflow at the outermost edge (outer edge 12) of the blade bypasses the blade and flows back to the negative pressure surface (rear side) of the blade, so that tip vortex is formed, and the air quantity is influenced. Here, reference may be made to a in the simulation diagram of fig. 9.
In the embodiment of the present disclosure, a wing plate 20 is provided on the outer edge 12, the wing plate 20 and the outer edge 12 have a set included angle therebetween, and a first side 21 of the wing plate 20 protrudes from a plane of the front side of the blade body 10. That is, the first side edge 21 of the wing plate 20 protrudes from the positive pressure surface of the blade body 10, so that the air flow can be prevented from flowing back to the negative pressure surface of the blade body 10 around the outer edge 12.
In the blade not adopting the wing plate 20 structure, reference may be made to b in the simulation diagram of fig. 10, where a larger vortex is generated on the negative pressure surface of the blade body 10, on the one hand, a larger noise is generated, and on the other hand, an increase in energy consumption is caused, resulting in a decrease in efficiency. In the embodiment of the present disclosure, in the blade adopting the wing plate 20 structure, reference may be made to c in the simulation diagram of fig. 11, and the vortex generated by the negative pressure surface of the blade body 10 is significantly reduced. Thus, not only noise is reduced, but also efficiency is improved. Therefore, by adding the wing plate 20 on the outer edge 12, the air flow can be prevented from leaking from the positive pressure surface to the negative pressure surface, the strength of vortex flow is effectively reduced, and the separation of wing tips is delayed, so that the air output is increased, and the noise is reduced.
Alternatively, the outer edge 12 and the wing plate 20 are integrally formed, so that the overall structure of the blade body 10 can be simplified, and the production difficulty and the production cost of the blade body 10 can be reduced. In addition, under the condition of adopting an integrated structure, not only can the performance of the blade be continuously improved, but also the strength of the edge of the blade is increased.
Alternatively, the inner edge 11 of the blade body 10 and the hub 30 are integrally formed, so that the overall structure of the axial flow fan can be simplified, and the production difficulty and the production cost of the axial flow fan can be reduced.
In the above embodiment, the wing plate 20 and the outer edge 12 have a set angle therebetween, which also affects the vortex, and if the set angle between the wing plate 20 and the outer edge 12 is too large or too small, the airflow blocked by the wing plate 20 is correspondingly reduced. Thus, in some embodiments, outer edge 12 is disposed perpendicular to wing 20. In this way, the air flow can be blocked to the greatest extent. Here, the length of the wing 20 may be adapted to the length of the outer rim 12 and its curvature is also adapted to the outer rim 12.
In some embodiments, as shown in connection with FIG. 2, the second side 22 of the wing 20 protrudes out of the plane of the rear side of the blade body 10. In this way, the flow of air between the positive pressure surface and the negative pressure surface of the blade body 10 can be further blocked.
In the disclosed embodiment, the wing 20 has a first side 21 and a second side 22. The blocking surface formed by the first side edge 21 of the wing plate 20 at the front side of the blade body 10 can block the air flow from flowing back to the negative pressure surface of the blade body 10 at the positive pressure surface of the blade body 10. The blocking surface formed by the second side 22 of the vane 20 on the rear side of the vane body 10 can block the air flow flowing from the positive pressure surface of the vane body 10 from the negative pressure surface of the vane body 10. In this way, the flow of air between the positive pressure surface and the negative pressure surface of the blade body 10 can be further blocked by the double-sided blocking surfaces.
In some embodiments, the ratio of the distance between the first and second sides 21, 22 of the vane 20 to the radius of the blade body 10 ranges from a value of [0.03,0.12].
In the embodiment of the present disclosure, as shown in connection with fig. 3, since the first side 21 and the second side 22 can block the air flow, the fan air volume is also affected if the distance L 1 between the first side 21 and the second side 22 is too large, i.e., the width of the wing plate 20 is too wide L 1. Thus, by reasonably controlling the ratio of the distance L 1 between the first side 21 and the second side 22 of the blade 20 to the radius R of the blade body 10. The fan air quantity can be improved.
Optionally, the distance L 1 between the first side 21 and the second side 22 of the vane 20 is proportional to the radius R of the blade body 10 by a value of [0.03,0.12]. Optionally, the ratio of the distance L 1 between the first side 21 and the second side 22 of the vane 20 to the radius R of the vane body 10 is 0.03:1, 0.04:1, 0.05:1, 0.06:1, 0.07:1, 0.08:1, 0.09:1, 0.1:1, 0.12:1, etc. And are not limited herein.
Alternatively, the first side 21 of the wing 20 is equidistant from the front side of the blade body 10 and the second side 22 of the wing 20 is equidistant from the rear side of the blade body 10.
As shown in connection with FIG. 2, in some embodiments, the blade body 10 also has a leading edge 13 and a trailing edge 14 positioned opposite each other between the inner edge 11 and the outer edge 12, wherein the trailing edge 14 is a saw tooth structure.
In the embodiment of the present disclosure, the blade body 10 has an inner edge 11, an outer edge 12, a leading edge 13 and a trailing edge 14, which are sequentially disposed around each other, and are different side edges of the blade body 10, which affect the air volume of the blade body 10. Thus, the trailing edge 14 is provided with a saw tooth configuration, in particular, the trailing edge 14 is provided with a sinusoidal saw tooth configuration. In this way, the air flow is made smoother, thereby reducing air flow noise, and in addition, fan efficiency is improved and pressure pulsations in the region of the trailing edge 14 are reduced.
As shown in connection with FIG. 3, in some embodiments, the ratio of the thickness T of the airfoil 20 to the thickness T of the blade body 10 may range in value [0.7,1.3].
In the embodiment of the present disclosure, by controlling the ratio of the thickness T of the wing plate 20 to the thickness T of the blade body 10, the wing plate 20 and the blade body 10 have a certain strength, so that the performance of the blade body 10 is changed, and the service life of the blade body 10 is increased. Here, the ratio of the thickness T of the vane 20 to the thickness T of the vane body 10 ranges from a value of [0.7,1.3]. Optionally, the ratio of the thickness T of the vane 20 to the thickness T of the vane body 10 is 0.7:1, 0.8:1, 0.9:1, 1:1, 1.1:1, 1.2:1, 1.3:1, etc. And are not limited herein.
As shown in conjunction with fig. 4 and 5, embodiments of the present disclosure provide an axial flow fan, comprising: hub 30: the plurality of blades for the axial flow fan as in the previous embodiment are arranged on the hub 30 at equal intervals centering on the central axis of the hub 30.
In the embodiments of the present disclosure, the axial flow fan includes the blade for the axial flow fan in the foregoing embodiments, and the specific structure of the blade refers to the foregoing embodiments, and since the axial flow fan in this embodiment includes the foregoing blade, the axial flow fan at least has the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described in detail herein.
In the embodiment of the present disclosure, a corresponding connection portion 31 is provided on the hub 30 and is used for being connected with a fan bracket, so that the fan bracket drives the hub 30 to rotate, and then drives the blades to rotate.
In the embodiment of the present disclosure, at least three blades are provided on the hub 30, so that a sufficient air volume can be generated during rotation of the hub 30.
Alternatively, the number of blades mounted on the hub 30 may be set according to the actual application, and may be more than three.
As shown in conjunction with fig. 6 and 7, in some embodiments, the axial flow fan further includes: the drainage ring 40, a plurality of vanes are disposed within the annular ring of the drainage ring 40. Therefore, the air flow can be converged, so that the air quantity and the air speed of the axial flow fan are further improved.
In the embodiment of the present disclosure, the drainage ring 40 is an annular ring, and after the hub 30 is provided with the blades, the drainage ring 40 is sleeved on the outer sides of the plurality of blades, so that the airflow can flow more intensively during the rotation of the blades.
As shown in connection with fig. 6-8, in some embodiments, the drain ring 40 has an inlet port 41 and an outlet port 42, the inlet port 41 and the outlet port 42 being connected by an annular curved surface 43; wherein, the diameter ratio range value of the inflow port 41 and the outflow port 42 is [1.1,1.5]; and/or the ratio of the distance between the inflow port 41 and the outflow port 42 to the diameter of the outflow port 42 ranges from a value of [0.2,0.25]; and/or the ratio of the radius of the annular curved surface 43 to the diameter of the outflow opening 42 is in the range of [0.26,0.3].
In the embodiment of the present disclosure, to facilitate adjusting the size of the drainage ring 40, the diameter D of the inlet 41, the distance L 2 between the inlet 41 and the outlet 42, and the radius r of the annular curved surface 43 may be adaptively adjusted according to the diameter D of the outlet 42. Thus, by changing the size of the drain ring 40, the air volume of the axial flow fan can be improved to the maximum extent and the noise generated by the axial flow fan can be reduced.
Optionally, the diameter D of the inlet port 41 is adapted according to the diameter D of the outlet port 42. Here, the diameter ratio of the inflow port 41 to the outflow port 42 has a value of [1.1,1.5]. Optionally, the ratio of the diameter D of the inlet 41 to the diameter D of the outlet 42 is 1.1:1, 1.2:1, 1.4:1, 1.5:1, etc. And are not limited herein.
Optionally, the distance L 2 between the inlet port 41 and the outlet port 42 is adapted according to the diameter d of the outlet port 42. Here, the ratio of the distance L 2 between the inflow port 41 and the outflow port 42 to the diameter d of the outflow port 42 ranges in value [0.2,0.25]. Optionally, the ratio of the distance L 2 between the inlet 41 and the outlet 42 to the diameter d of the outlet 42 is 0.2:1, 0.21:1, 0.22:1, 0.23:1, 0.24:1, 0.25:1, etc. And are not limited herein.
Optionally, the radius r of the annular curved surface 43 is adapted according to the diameter d of the outflow opening 42. Here, the ratio of the radius r of the annular curved surface 43 to the diameter d of the outflow port 42 is in the range of [0.26,0.3]. Optionally, the ratio of the radius r of the annular curved surface 43 to the diameter d of the outflow opening 42 is 0.26:1, 0.27:1, 0.28:1, 0.29:1, 0.3:1, etc. And are not limited herein.
The embodiment of the disclosure also provides an air conditioner outdoor unit, which comprises the axial flow fan in the embodiment. The air conditioner outdoor unit is provided with a fan bracket and the axial fan in the previous embodiment, and the axial fan is mounted on the fan bracket. The air conditioner outdoor unit in this embodiment includes the axial flow fan, so the air conditioner outdoor unit at least has the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail herein.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. A blade for an axial flow fan, the axial flow fan comprising a hub, the blade being for being disposed on the hub, the blade comprising:
The blade body is provided with an inner edge and an outer edge which are arranged on the hub and are opposite to the inner edge, and the blade body is also provided with a front edge and a tail edge which are arranged between the inner edge and the outer edge and are opposite to each other, wherein the tail edge is of a sawtooth structure;
The wing plate is arranged on the outer edge and forms a set included angle with the outer edge; wherein, the first side of pterygoid lamina protrusion is in the plane of blade body front side, and the second side of pterygoid lamina protrusion is in the plane of blade body rear side.
2. A blade according to claim 1, wherein the outer edge is arranged perpendicular to the wing.
3. The blade of claim 1, wherein the ratio of the distance between the first and second sides of the wing to the radius of the blade body ranges from [0.03,0.12].
4. A blade according to any one of claims 1 to 3, wherein the ratio of the thickness of the wing to the thickness of the blade body ranges from a value of [0.7,1.3].
5. An axial flow fan, comprising:
Hub:
The plurality of blades for an axial flow fan according to any one of claims 1 to 4, which are spaced apart from each other on the hub with respect to the center axis of the hub.
6. The axial flow fan according to claim 5, further comprising:
The drainage ring, a plurality of blades set up in the annular ring of drainage ring.
7. The axial flow fan of claim 6, wherein the flow guiding ring has an inflow port and an outflow port, and the inflow port and the outflow port are connected by an annular curved surface;
wherein, the diameter ratio range value of the inlet port and the outlet port is [1.1,1.5]; and/or the ratio of the distance between the inlet and the outlet to the diameter of the outlet ranges from [0.2,0.25]; and/or the ratio range value of the curved surface radius of the annular curved surface to the diameter of the outflow port is [0.26,0.3].
8. An outdoor unit of an air conditioner, comprising the axial flow fan according to any one of claims 5 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322368398.1U CN221096950U (en) | 2023-08-31 | 2023-08-31 | Blade for axial flow fan, axial flow fan and air conditioner outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322368398.1U CN221096950U (en) | 2023-08-31 | 2023-08-31 | Blade for axial flow fan, axial flow fan and air conditioner outdoor unit |
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| Publication Number | Publication Date |
|---|---|
| CN221096950U true CN221096950U (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322368398.1U Active CN221096950U (en) | 2023-08-31 | 2023-08-31 | Blade for axial flow fan, axial flow fan and air conditioner outdoor unit |
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| Country | Link |
|---|---|
| CN (1) | CN221096950U (en) |
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- 2023-08-31 CN CN202322368398.1U patent/CN221096950U/en active Active
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