阅读说明：本技术 一种风轮和出风装置 (Wind wheel and air outlet device ) 是由 杨静慧 孙坤 赵勇 蔡晓龙 胡逢亮 于 2021-11-12 设计创作，主要内容包括：本发明提供的风轮和出风装置,包括：轮毂,中部设置有连接部,所述轮毂适于通过所述连接部连接外部动力件,并在动力件的驱动下,以所述连接部为轴心转动；若干叶片,与所述轮毂连接并沿所述轮毂周向分布,至少所述叶片的受风面上设置有若干凸起部,所述凸起部相互间隔设置,并以所述连接部为圆心呈同心设置。凸起部可以在叶片的受风面上起到导风作用,并可以有效地改变叶片近壁区的湍流结构,改善杂乱无章的涡流,消弱反向旋转涡对的强度,减少涡流之间相互碰撞和异常分离导致的破裂,从而降低了湍流的强度和脉动压力,抑制风轮的中高频噪声,最终降低了整体风轮的噪声。(The invention provides a wind wheel and an air outlet device, comprising: the middle part of the wheel hub is provided with a connecting part, the wheel hub is suitable for being connected with an external power part through the connecting part and rotates by taking the connecting part as an axis under the driving of the power part; the blades are connected with the hub and distributed along the circumferential direction of the hub, at least a plurality of protrusions are arranged on the wind-receiving surface of each blade, and the protrusions are arranged at intervals and concentrically arranged with the connecting part as the circle center. The bulge can play the wind-guiding effect on the wind-receiving face of blade to can change the torrent structure of blade nearly wall region effectively, improve mixed and disorderly vortex, weaken the intensity of reverse rotation vortex pair, reduce the fracture that mutual collision and abnormal separation lead to between the vortex, thereby reduced the intensity and the pulsating pressure of torrent, restrain the well high frequency noise of wind wheel, finally reduced the noise of whole wind wheel.)

1. A wind turbine, comprising:

the middle part of the hub (1) is provided with a connecting part (11) which is suitable for being connected with an external power part;

a plurality of blades (2), with wheel hub (1) are connected and are followed wheel hub (1) circumference distributes, at least be provided with a plurality of bellyings (21) on the wind-receiving face of blade (2), bellyings (21) set up at an interval each other, and with connecting portion (11) are concentric settings as the centre of a circle.

2. The wind rotor according to claim 1, characterized in that the side edges of the blades (2) are provided with a sawtooth structure.

3. The wind wheel according to claim 2, characterized in that the sawtooth structure comprises a plurality of concave parts (22) arranged at regular intervals, the concave parts (22) are arranged in a concave manner along the circumferential direction of the blade (2), the convex parts (21) extend to the side edges of two sides of the blade (2), and the concave parts (22) are correspondingly arranged between at least two convex parts (21).

4. A wind rotor according to any of claims 1-3, characterised in that adjacent protrusions (21) are arranged evenly along the wind receiving surface.

5. The wind rotor according to claim 4, characterized in that the radial thickness of the protrusions (21) is C, and the distance between adjacent protrusions (21) is E, then E/C is 1 ≦ E/C ≦ 5.

6. The wind wheel according to claim 5, characterized in that C is more than or equal to 0.05mm and less than or equal to 5 mm.

7. Wind rotor according to claim 5 or 6, characterised in that at least some of said protrusions (21) are arranged protruding in an inverted V-shape.

8. The wind wheel according to claim 7, characterized in that at least some of the protrusions (21) are arranged protruding in an inverted U-shape and are arranged inside the inverted V-shaped protrusions (21) towards the connection portion (11).

9. The wind rotor according to claim 4, characterized in that the raised height of each of the protrusions (21) along the wind receiving surface is equal.

10. An air outlet device, characterized in that it comprises a wind wheel according to any of claims 1-9.

Technical Field

The invention relates to the technical field of fans, in particular to a wind wheel and an air outlet device.

Background

Nowadays, various air outlet devices such as fans, air conditioners, air purifiers and the like are widely applied to daily life. However, as an important component of the air outlet device, the wind wheel can efficiently exhaust air and generate noise to a certain degree due to the problem of the structure of the wind wheel.

The main mode of making an uproar falls in present wind wheel increases sound-proof structure in wind wheel week side environment, but sound-proof structure on the one hand the cost is higher, and on the other hand has reduced the utilization efficiency of air-out device inner space, has increased the volume of air-out device.

Disclosure of Invention

Therefore, the technical problems to be solved by the invention are to overcome the problems that the noise reduction mode of the wind wheel in the prior art is high in cost and the space utilization rate of the air outlet device provided with the wind wheel is low, so that the wind wheel and the air outlet device are provided.

The invention provides a wind wheel, comprising: the middle part of the hub is provided with a connecting part which is suitable for connecting an external power part; the blades are connected with the hub and distributed along the circumferential direction of the hub, at least a plurality of protrusions are arranged on the wind-receiving surface of each blade, and the protrusions are arranged at intervals and concentrically arranged with the connecting part as the circle center.

And sawtooth structures are arranged on the lateral edges of the two sides of the blade.

The sawtooth structure includes the depressed part that a plurality of even intervals set up, the depressed part is followed the circumference of blade is the indent setting, the bellying extends to the both sides lateral margin of blade, the depressed part corresponds the setting two at least between the bellying.

The adjacent convex parts are uniformly arranged along the wind receiving surface.

The radial thickness of the convex parts is C, the distance between the adjacent convex parts is E, and E/C is more than or equal to 1 and less than or equal to 5.

0.05mm≤C≤5mm。

At least part of the convex part is arranged in a protruding mode in an inverted V shape.

At least part of the lug boss is arranged in an inverted U-shaped protruding mode and is arranged on the inner side, facing the connecting portion, of the inverted V-shaped lug boss.

The protruding heights of the protruding parts along the wind receiving surface are equal.

The invention provides an air outlet device which comprises the wind wheel.

The technical scheme of the invention has the following advantages:

1. the invention provides a wind wheel, comprising: the middle part of the wheel hub is provided with a connecting part, the wheel hub is suitable for being connected with an external power part through the connecting part and rotates by taking the connecting part as an axis under the driving of the power part; the blades are connected with the hub and distributed along the circumferential direction of the hub, at least a plurality of protrusions are arranged on the wind-receiving surface of each blade, and the protrusions are arranged at intervals and concentrically arranged with the connecting part as the circle center.

The fan, especially the axial flow fan, has aerodynamic noise mainly caused by the blade pulsation during the over wind, and its noise sound spectrum mainly consists of broadband eddy current noise and discrete frequency rotation noise.

Through set up a plurality of bellyings on the blade, make it keep an interval each other and use connecting portion to set up as the center with one heart, be connected with power spare at the wind wheel, and use connecting portion to take place pivoted in-process as the axle center under the power spare drive, the bellyings can play the wind-guiding effect on the face of receiving wind of blade, and can change the turbulent structure of blade near-wall region effectively, improve mixed and disorderly vortex, weaken the intensity of reverse rotation vortex pair, reduce the fracture that mutual collision and abnormal separation lead to between the vortex, thereby the intensity and the pulsating pressure of torrent have been reduced, restrain the medium and high frequency noise of wind wheel, the noise of whole wind wheel has finally been reduced, it is with high costs effectively to set up the mode of making an uproar that falls of overcoming the wind wheel among the prior art like this, the air-out device space utilization who is provided with the wind wheel is low-priced problem.

2. According to the wind wheel provided by the invention, the side edges of the two sides of the blade are provided with the sawtooth structures.

The sawtooth structure that the both sides lateral margin of blade set up, on the one hand, can reduce the area of lateral margin position boundary layer, thereby reduce pulsating force and wake vortex, on the other hand, the sawtooth plays vortex generator's effect, will intensively concentrate the vortex wind and cut the dispersion into a plurality of little whirlpools, thereby reduced boundary layer turbulent intensity, the torrent situation of boundary layer has been improved, can also strengthen viscidity dissipation effect, and then reduce turbulent intensity and pulsating pressure, finally reduce axial fan's noise.

3. The wind wheel provided by the invention has the advantages that the sawtooth structure comprises a plurality of concave parts which are uniformly arranged at intervals, the concave parts are arranged inwards along the circumferential direction of the blade, the convex parts extend to the side edges of two sides of the blade, and the concave parts are correspondingly arranged between at least two convex parts.

The depressed part sets up between the bellying, sets up like this and is convenient for guide air current to flow to the depressed part position, is convenient for cut the whirlwind after concentrating and discretizes into a plurality of little whirlpools, reduces boundary layer turbulence intensity, has improved the torrent situation of boundary layer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a wind rotor provided in an embodiment of the present invention;

FIG. 2 is a cross-sectional side view of a blade of the wind turbine shown in FIG. 1;

FIG. 3 is a schematic view of the flow guidance of the blades of the wind turbine shown in FIG. 1;

description of reference numerals:

1-a hub; 11-a connecting portion; 2-a blade; 21-a boss; 22-recess.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-3, the present invention provides a wind turbine comprising a hub 1 and a number of blades 2.

The hub 1 is arranged in a disc shape, the middle part of the hub is provided with a connecting part 11, in the embodiment, the connecting part 11 is a shaft hole, can also be in a shaft groove structure and the like and is used for connecting an external power part, and the power part is specifically a driving motor; blade 2 and hub 1's edge connection to be evenly distributed along hub 1's circumference, the restriction is not done to blade 2's number, can adjust as required adaptability, and in this embodiment, blade 2's the wind-receiving face, drive air current's normal pressure promptly and personally submit even smooth setting, is equipped with a plurality of bellyings 21 on it, and bellyings 21 are arc strip, and the mutual interval sets up, and uses connecting portion 11 to be concentric setting as the centre of a circle. As an alternative embodiment, the leeward side of the blade 2 may be provided with the convex portion 21.

The aerodynamic noise of the fan, especially the axial flow fan, is mainly caused by the pulsation of the blade 2 during the over-wind, the noise sound spectrum of the fan mainly consists of broadband eddy current noise and discrete frequency rotating noise, the fan is a discrete spectrum at the low frequency part, the rotating noise is used as a main noise source, the fan gradually transits to a continuous spectrum along with the increase of the frequency, and the broadband eddy current noise is the most main noise source.

Through set up a plurality of bellying 21 on blade 2, make it interval each other and use connecting portion 11 to set up as the center with one heart, be connected at wind wheel and power piece, and take place pivoted in-process with connecting portion 11 as the axle center under the power piece drive, bellying 21 can play the wind-guiding effect on the wind-receiving face of blade 2, and can change the turbulent structure of blade 2 near-wall region effectively, improve the vortex of disorderly and disorderly, weaken the intensity of reverse rotation vortex pair, reduce the fracture that mutual collision and abnormal separation lead to between the vortex, thereby the intensity and the pulsating pressure of torrent have been reduced, the medium and high frequency noise of suppression wind wheel, the noise of whole wind wheel has finally been reduced.

In the present embodiment, both side edges of the vane 2 are provided with a serration structure. As an alternative embodiment, the blade 2 may be provided with a serration structure only along the front side edge in the rotation direction.

The sawtooth structure that blade 2's both sides lateral margin set up, on the one hand, can reduce the area of lateral margin position boundary layer, thereby reduce pulsating force and wake vortex, on the other hand, the sawtooth plays vortex generator's effect, will intensively concentrate the vortex wind and cut the dispersion into a plurality of little whirlpools, thereby reduced boundary layer turbulent flow intensity, the torrent situation of boundary layer has been improved, can also strengthen viscidity dissipation effect, and then reduce turbulent flow intensity and pulsating pressure, finally reduce axial fan's noise.

The sawtooth structure includes the depressed part 22 that a plurality of even intervals set up, and depressed part 22 is the indent setting along blade 2's circumference, and bellying 21 extends to blade 2's both sides lateral margin, and depressed part 22 corresponds the setting between two at least bellying 21. The concave parts 22 are arranged among the convex parts 21, so that the arrangement is convenient for guiding airflow to flow to the positions of the concave parts 22, the concentrated vortex wind is conveniently cut and dispersed into a plurality of small vortexes, the turbulent intensity of a boundary layer is reduced, and the turbulent condition of the boundary layer is improved.

In this embodiment, the protruding portions 21 are uniformly arranged along the wind-receiving surface, and the protruding portions 21 disposed on the wind-receiving surface are disposed at equal intervals. The setting has guaranteed the homogeneity of bellying 21 water conservancy diversion like this, effectively changes each position department torrent structure, has reduced the intensity and the pulsating pressure of torrent, suppresses the well high frequency noise of wind wheel. As an alternative embodiment, the distance between the protrusions 21 may be uniformly gradually varied according to the direction of approach to the connection portion 11.

The radial thickness of the convex portion 21 is set to be C, and the distance between the adjacent convex portions 21 is set to be E, in the present embodiment, the radial thickness of the convex portion 21 and the distance between the adjacent convex portions 21 are both measured at the connecting position of the convex portion 21 and the surface of the blade 2, specifically, E/C is greater than or equal to 1 and less than or equal to 5, and preferably, E/C is equal to 5. Further, 0.05mm ≦ C ≦ 5mm, preferably, C ≦ 3 mm.

In the present embodiment, the cross section of the partial convex portion 21 is triangular, and the tip thereof is protruded in an inverted V shape. The other part of the convex part 21 is arranged in a shield shape in cross section, the tip of the other part of the convex part 21 is arranged in a protruding way in an inverted U shape, and the part of the convex part 21 is arranged on the inner side of the convex part 21 with the inverted V-shaped tip towards the connecting part 11. As an alternative embodiment, the projections 21 may all be arranged in a triangular or shield shape or in another shape. In this embodiment, the wind wheel noise volume under different conditions is shown in the following table:

in addition, in this embodiment, each protruding portion 21 is equal along the protruding height of the windward side, combines protruding portion 21 to appear evenly arranged along the windward side, has further guaranteed the homogeneity of protruding portion 21 water conservancy diversion, effectively changes the torrent structure of each position department, has reduced the intensity and the pulsating pressure of torrent, suppresses the medium and high frequency noise of wind wheel. As an alternative embodiment, the cross-sectional shape of the protrusion 21 may be adjusted as needed, and may be rectangular or the like.

This embodiment provides an air-out device, specifically can be air conditioner, axial fan, fan etc. in this embodiment, specifically is air purifier, includes foretell wind wheel and the driving motor who connects the wind wheel.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.