CN113775542A

CN113775542A - Fan impeller

Info

Publication number: CN113775542A
Application number: CN202010524277.XA
Authority: CN
Inventors: 刘堂安; 彭启人; 陈家震; 林姿伶
Original assignee: Inventec Pudong Technology Corp; Inventec Corp
Current assignee: Inventec Pudong Technology Corp; Inventec Corp
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-12-10
Also published as: US20210388845A1

Abstract

The invention provides a fan impeller which comprises a wheel shell, a plurality of fan blades and a plurality of first air guide structures. The hub is configured to rotate about an axis. The fan blades are arranged around the axis in a radial mode, each fan blade comprises a tail end edge and two extending edges, the tail end edges are far away from the wheel shell, the extending edges are connected with the tail end edges and the wheel shell, and the tail end edges and the extending edges define opposite windward sides and opposite leeward sides. The first wind guiding structures are respectively arranged on the leeward surfaces of the corresponding fan blades, and at least part of the first wind guiding structures is adjacent to the tail end edge of the corresponding fan blade and one of the two extending edges.

Description

Fan impeller

Technical Field

The present invention relates to a fan impeller, and more particularly, to a fan impeller suitable for use in electronic products.

Background

With the progress of modern technologies, the application demand of electronic products is increasing. In order to satisfy the requirements of electronic products for consumers, manufacturers need to continuously improve the functions and the operating efficiency of the electronic products, and the optimization of a heat dissipation system is also a ring which is considered by the manufacturers.

For example, how to effectively improve the operating efficiency of the heat dissipation system under the condition of achieving the optimal space utilization is undoubtedly an important development topic in the industry.

Disclosure of Invention

One objective of the present invention is to provide a fan impeller, which can effectively reduce the eddy current generated near the edge of the near end of the fan blade, so as to greatly reduce the induced resistance and noise generated when the fan impeller rotates, and further improve the heat dissipation effect of the electronic product and the operation performance of the electronic product.

According to an embodiment of the present invention, a fan impeller includes a wheel housing, a plurality of blades, and a plurality of first wind guiding structures. The hub is configured to rotate about an axis. The fan blades are arranged around the axis in a radial mode, each fan blade comprises a tail end edge and two extending edges, the tail end edges are far away from the wheel shell, the extending edges are connected with the tail end edges and the wheel shell, and the tail end edges and the extending edges define opposite windward sides and opposite leeward sides. The first wind guiding structures are respectively arranged on the leeward surfaces of the corresponding fan blades, and at least part of the first wind guiding structures is adjacent to the tail end edge of the corresponding fan blade and one of the two extending edges.

In one or more embodiments of the present invention, the first wind guiding structure is far away from the wheel casing.

In one or more embodiments of the present invention, the first wind guiding structure has a first length, and the first length is perpendicular to the corresponding leeward surface and is tapered in a direction toward the wheel housing.

In one or more embodiments of the present invention, the at least two fan blades are located between two adjacent first wind guiding structures, and a center of gravity of the first wind guiding structure is overlapped with the axis.

In one or more embodiments of the present invention, the fan impeller further includes a plurality of second wind guiding structures. The second wind guiding structures are respectively arranged on the leeward surfaces of the corresponding fan blades, and at least part of the second wind guiding structures is adjacent to the tail end edge of the corresponding fan blade and the other one of the two extending edges.

In one or more embodiments of the present invention, the second wind guiding structure is far away from the wheel casing.

In one or more embodiments of the present invention, the second wind guiding structure has a second length, and the second length is perpendicular to the corresponding leeward surface and is tapered in a direction toward the wheel housing.

In one or more embodiments of the present invention, the at least two fan blades are located between two adjacent second wind guiding structures, and a center of gravity of the second wind guiding structure is overlapped with the axis.

In one or more embodiments of the present invention, the second wind guiding structure and the first wind guiding structure are disposed on the same fan blade.

In one or more embodiments of the present invention, the second wind guiding structure and the first wind guiding structure are disposed on different blades.

The above embodiments of the invention have at least the following advantages: because the first air guide structure is arranged on the leeward side of the fan blades and at least partially abuts against one of the tail end edge and the two extending edges of the corresponding fan blades, when the windward side of the fan blades moves towards the rotating direction, the first air guide structure can effectively reduce the vortex generated near the tail end edge of the fan blades, thereby greatly reducing the induced resistance and the noise generated when the fan impeller rotates, and further improving the heat dissipation effect on electronic products and the operation performance of the electronic products.

Drawings

Fig. 1 is a schematic perspective view of a fan impeller provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of range A of FIG. 1;

fig. 3 is a schematic perspective view of a fan impeller according to an embodiment of the present invention;

fig. 4 is a perspective view of a fan impeller according to another embodiment of the present invention;

fig. 5 is a perspective view of a fan wheel according to another embodiment of the present invention;

fig. 6 is a schematic perspective view of a fan impeller according to another embodiment of the present invention;

wherein the reference numerals are:

100-a fan impeller; 110-a wheel housing; 120-fan blades; 121-terminal edge; 122-extended edge; 130-a first air guiding structure; 140-a second wind guiding structure; a-range; d-the direction of rotation; l1-first length; l2-second length; SW-windward side; SL-lee face; the X-axis.

Detailed Description

Embodiments of the invention are illustrated in the accompanying drawings, and for the purposes of clarity, numerous implementation details are set forth in the following description. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. Further, in order to simplify the drawings, some well-known and conventional structures and elements will be depicted in a simplified schematic manner in the drawings, and the same reference numerals will be used throughout the drawings to refer to the same or like elements. And features of different embodiments may be applied interactively if possible to implement.

Unless otherwise defined, all words (including technical and scientific terms) used herein have their ordinary meaning as understood by those skilled in the art. Furthermore, the definitions of the above-mentioned words in commonly used dictionaries should be interpreted as having a meaning consistent with the context of the present invention. Unless otherwise explicitly defined, these terms are not to be construed in an idealized or overly formal sense.

Please refer to fig. 1-2. Fig. 1 is a perspective view of a fan impeller 100 according to an embodiment of the present invention. Fig. 2 is a partially enlarged view of the range a of fig. 1. In the present embodiment, as shown in fig. 1 to 2, a fan impeller 100 includes a wheel housing 110, a plurality of blades 120, and a plurality of first air guiding structures 130. The wheel housing 110 is configured to rotate about an axis X. The fan blades 120 are radially arranged around the axis X, and the fan blades 120 include a terminal edge 121 and two extending edges 122, the terminal edge 121 is away from the hub 110, the extending edges 122 connect the terminal edge 121 and the hub 110, and the terminal edge 121 and the extending edges 122 define a windward side SW and a leeward side SL which are opposite to each other. The first wind guiding structures 130 are respectively disposed on the leeward surfaces SL of the corresponding fan blades 120 and are far away from the wheel housing 110. It is noted that the first wind guiding structure 130 at least partially abuts against the end edge 121 of the corresponding fan blade 120 and one of the two extending edges 122. For example, as shown in fig. 1 to fig. 2, the first wind guiding structure 130 is adjacent to the extending edge 122 above the fan blade 120. In practical applications, the fan impeller 100 is suitable for use in an electronic product (not shown) to dissipate heat of the electronic product.

When the fan wheel 100 is operated, the fan wheel 100 is driven by a power element (not shown), so that the fan wheel 100 rotates around the axis X toward a rotation direction D (see fig. 1 for the rotation direction D), that is, the windward side SW of the fan blades 120 moves toward the rotation direction D. As described above, since the first wind guiding structure 130 is disposed on the leeward side SL of the fan blade 120 and at least partially adjacent to the terminal edge 121 of the corresponding fan blade 120 and one of the two extending edges 122, when the windward side SW of the fan blade 120 moves toward the rotation direction D, the first wind guiding structure 130 can effectively reduce the vortex generated near the terminal edge 121 of the fan blade 120, so as to greatly reduce the induced resistance and noise generated when the fan impeller 100 rotates, and further improve the heat dissipation effect on the electronic product and the operation performance of the electronic product.

Structurally, as shown in fig. 2, the first wind guiding structure 130 has a first length L1, and the first length L1 of the first wind guiding structure 130 is perpendicular to the corresponding leeward surface SL and is tapered in a direction toward the wheel housing 110.

Please refer to fig. 3. Fig. 3 is a perspective view of a fan wheel 100 according to another embodiment of the present invention. In the present embodiment, the fan impeller 100 further includes a plurality of second air guiding structures 140. The second wind guiding structures 140 are respectively disposed on the leeward surfaces SL of the corresponding fan blades 120 and far away from the wheel housing 110. It is noted that the second wind guiding structure 140 at least partially abuts the other of the end edge 121 and the extending edge 122 of the corresponding fan blade 120. For example, as shown in fig. 3, the first wind guiding structure 130 is adjacent to the extending edge 122 above the fan blade 120, and the second wind guiding structure 140 is adjacent to the extending edge 122 below the fan blade 120.

Structurally, as shown in fig. 3, the second wind guiding structure 140 has a second length L2, and the second length L2 is perpendicular to the corresponding leeward surface SL and is tapered in a direction toward the wheel housing 110.

It is noted that, in the present embodiment, the second wind guiding structure 140 and the first wind guiding structure 130 are disposed on the same fan blade 120. More specifically, as shown in fig. 3, the second wind guiding structure 140 and the first wind guiding structure 130 are respectively disposed on the leeward surfaces SL of all the blades 120, but the invention is not limited thereto.

Please refer to fig. 4. Fig. 4 is a perspective view of a fan impeller 100 according to another embodiment of the present invention. In this embodiment, at least two fan blades 120 are located between two adjacent first air guiding structures 130. That is, the first wind guiding structure 130 is not disposed on the leeward side SL of all the fan blades 120. Specifically, in practical applications, the first wind guiding structures 130 may be disposed on the leeward side SL of the fan blades 120 at intervals, for example, only one first wind guiding structure 130 is disposed on every two or more fan blades 120, but the invention is not limited thereto. For example, as shown in fig. 4, each two of the fan blades 120 is provided with a first wind guiding structure 130. It should be noted that the center of gravity of the first air guiding structure 130 overlaps the axis X (see fig. 1 for the axis X), so that when the fan impeller 100 rotates around the axis X toward the rotating direction D, the entire center of gravity of the fan impeller 100 can also overlap the axis X, so that the stability of the fan impeller 100 during rotation can be maintained.

Please refer to fig. 5. Fig. 5 is a perspective view of a fan wheel 100 according to another embodiment of the present invention. In the present embodiment, as shown in fig. 5, in addition to at least two blades 120 located between two adjacent first air guiding structures 130, at least two blades 120 are also located between two adjacent second air guiding structures 140, and the second air guiding structures 140 and the first air guiding structures 130 are disposed on the same blades 120. That is, similarly, the second wind guiding structure 140 is not disposed on the leeward side SL of all the fan blades 120. It should be noted that the center of gravity of the second wind guiding structure 140 overlaps the axis X (see fig. 1 for the axis X), so that when the fan impeller 100 rotates around the axis X toward the rotating direction D, the entire center of gravity of the fan impeller 100 can also overlap the axis X, so that the stability of the fan impeller 100 during rotation can be maintained.

Please refer to fig. 6. Fig. 6 is a perspective view of a fan wheel 100 according to another embodiment of the present invention. In the present embodiment, as shown in fig. 6, at least two blades 120 are located between two adjacent first air guiding structures 130, and at least two blades 120 are located between two adjacent second air guiding structures 140, and the second air guiding structures 140 and the first air guiding structures 130 are disposed on different blades 120.

In summary, the technical solutions provided by the above embodiments of the present invention have at least the following advantages: because the first air guiding structure is arranged on the leeward side of the fan blades and at least partially abuts against the tail end edge of the corresponding fan blade and one of the two extending edges, when the windward side of the fan blades moves towards the rotating direction, the first air guiding structure can effectively reduce the vortex generated near the tail end edge of the fan blades, thereby greatly reducing the induced resistance and the noise generated when the fan impeller rotates, and further improving the heat dissipation effect of an electronic product so as to lead the operation performance of the electronic product.

Claims

1. A fan wheel, comprising:

a hub configured to rotate about an axis;

a plurality of blades radially arranged around the axis, each blade including a distal edge and two extending edges, the distal edge being distal from the hub, the two extending edges connecting the distal edge and the hub, the distal edge and the two extending edges defining a windward side and a leeward side opposite to each other; and

the plurality of first air guide structures are respectively arranged on the leeward surfaces of the corresponding fan blades, and at least part of the first air guide structures is adjacent to the tail end edge of the corresponding fan blade and one of the two extending edges.

2. The fan impeller of claim 1, wherein a plurality of said first air guiding structures are remote from said wheel housing.

3. The fan impeller of claim 1, wherein each of said first air guiding structures has a first length, said first length being perpendicular to said corresponding leeward surface and tapering in a direction toward said wheel housing.

4. The fan impeller of claim 1, wherein at least two of said fan blades are located between two adjacent said first air guiding structures, and a center of gravity of adjacent said first air guiding structures overlaps said axis.

5. The fan wheel of claim 1, further comprising:

and the second air guide structures are respectively arranged on the leeward surfaces of the corresponding fan blades, and at least part of the second air guide structures is adjacent to the tail end edge of the corresponding fan blade and the other one of the two extending edges.

6. The fan impeller of claim 5, wherein a plurality of said second air guiding structures are remote from said wheel housing.

7. The fan impeller of claim 5, wherein each of said second air guiding structures has a second length, said second length being perpendicular to the corresponding said leeward surface and tapering in a direction toward said wheel housing.

8. The fan impeller of claim 5, wherein at least two of said fan blades are located between two adjacent said second air guiding structures, and a center of gravity of adjacent said second air guiding structures overlaps said axis.

9. The fan impeller of claim 5, wherein the plurality of second air guiding structures and the plurality of first air guiding structures are disposed on the same fan blade.

10. The fan impeller of claim 5, wherein the plurality of second air guiding structures and the plurality of first air guiding structures are disposed on different blades.