Fan blade and fan

Abstract

The utility model provides a fan blade and a fan, the fan blade comprises a hub and a plurality of blades connected in the circumferential direction of the hub, the hub is provided with a first end face and a second end face which are opposite, and a main body of each blade comprises a first edge close to the first end face and a second edge close to the second end face; when the first end face is defined to be located above the second end face, the fan blade is placed in the forward direction, the fan blade comprises an extending part, the extending part extends out from the position close to the first edge, and an angle is formed between the extending part and the main body; when the fan blades are placed in the forward direction, the extending direction of the main body and the tangential direction of the connecting part of the hub are obliquely arranged to form an acute angle or an obtuse angle. According to the fan blade and the fan, due to the fact that the blades of the fan blade are provided with the extending parts, the extending parts extend out of the first edges, and the extending parts and the blade bodies are arranged at the angles, air resistance during blade operation can be reduced, the fan blade is not prone to deformation during rotation, the air volume is increased, and noise can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of heat dissipation devices, and in particular to a fan blade and a fan. Background Art

[0002] When the blades of existing fans are in normal operation, the blade tips of the fan blades will deflect, and part of the airflow will flow in the opposite direction of the fan blades, causing the fan to produce aerodynamic noise. In addition, the thickness of the mainstream ultra-thin blades currently used in electronic devices is about 0.15mm to 0.30mm, and the fan blades are prone to slight deformation when rotating, resulting in a decrease in the overall heat dissipation performance of the fan. Utility Model Content

[0003] The present disclosure provides a fan blade and a fan to at least solve the above technical problems existing in the prior art.

[0004] According to a first aspect of the present disclosure, a fan blade is provided, comprising a hub and a plurality of blades connected to the hub in a circumferential direction, the hub having a first end face and a second end face relative to each other, the main body of the blade comprising a first edge close to the first end face and a second edge close to the second end face, the fan blade being defined as being forwardly placed when the first end face is located above the second end face, the blade comprising an extension portion, the extension portion extending from a position close to the first edge and being arranged at an angle to the main body; wherein, when the fan blade is forwardly placed, the extension direction of the main body is inclined at an acute angle or an obtuse angle to the tangent direction of the connecting portion of the hub.

[0005] In one possible implementation, the maximum distance between the extension portion and the main body is defined as the height of the extension portion, the maximum length of the extension portion in a direction that satisfies the parallel condition with the direction of the main body is defined as the thickness of the extension portion, the height is smaller than the distance between two adjacent main bodies, and the distance between the first side and the second side is greater than the thickness.

[0006] In one possible implementation, in a cross section of the extension portion, the extension portion is rectangular.

[0007] In one possible implementation, in a cross section of the extension portion, the extension portion is trapezoidal.

[0008] In one possible implementation, in a cross section of the extension portion, the extension portion is triangular.

[0009] In one possible implementation, in a cross section of the extension portion, the extension portion is in an arc-shaped circle or a fan-shaped shape.

[0010] In one possible implementation manner, the main body has a root portion close to the hub and a top portion away from the hub, and the extension portion is extended from the root portion to the top portion.

[0011] In one embodiment, the main body has a root close to the hub and a top away from the hub, and the fan blade also includes a structural ring, which is located between the root and the top and is concentric with the hub, and the extension portion extends from the structural ring to the top.

[0012] In one embodiment, the main body has a root close to the hub and a top away from the hub, and the fan blade also includes a structural ring, which is located between the root and the top and concentrically arranged with the hub, and the extension portion extends from any position between the root and the structural ring to the top.

[0013] According to a second aspect of the present disclosure, a fan is provided, comprising a housing and a drive assembly, wherein a fan blade as described in any one of the above-mentioned embodiments is disposed in the housing, and the fan blade is connected to the drive assembly.

[0014] In the present disclosure, since the fan blade has an extension portion, the extension portion extends from the first edge and is set at an angle to the blade body, thereby reducing the air resistance when the blade is running, making it less likely for the fan blade to deform when rotating, thereby increasing the air volume and reducing noise.

[0015] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0017] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0018] Figure 1 The overall structure schematic diagram of a fan blade of an exemplary embodiment of the present disclosure is shown (the blade is arranged clockwise and the extension portion is arranged clockwise);

[0019] Figure 2 The overall structure schematic diagram of a fan blade of an exemplary embodiment of the present disclosure is shown (the blade is arranged clockwise and the extension portion is arranged counterclockwise);

[0020] Figure 3The figure shows the overall structure of a fan blade of an exemplary embodiment of the present disclosure (the blade is arranged counterclockwise and the extension portion is arranged clockwise);

[0021] Figure 4 The overall structure of the fan blade of an exemplary embodiment of the present disclosure is shown. Figure 1 (The extension is trapezoidal);

[0022] Figure 5 The overall structure of the fan blade of an exemplary embodiment of the present disclosure is shown. Figure 2 (The extension is trapezoidal);

[0023] Figure 6 The overall structure of the fan blade of an exemplary embodiment of the present disclosure is shown. Figure 1 (The extension is triangular);

[0024] Figure 7 The overall structure of the fan blade of an exemplary embodiment of the present disclosure is shown. Figure 2 (The extension is triangular);

[0025] Figure 8 The figure shows the overall structure of a fan blade of an exemplary embodiment of the present disclosure (the extension portion is an arc-shaped circle);

[0026] Fig. 9 The figure shows the overall structure of a fan blade of an exemplary embodiment of the present disclosure (the extension portion is extended from the structural ring to the top);

[0027] Fig.10 A schematic diagram of the overall structure of a fan blade according to an exemplary embodiment of the present disclosure is shown.

[0028] Explanation of the numbers in the figure: 1. hub; 2. blades; 3. structural ring; 11. first end face; 12. second end face; 20. main body; 21. first side; 22. second side; 23. extension part; 201. root; 202. top. DETAILED DESCRIPTION

[0029] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0030] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Fig.10 As shown, a fan blade of an exemplary embodiment of the present disclosure includes a hub 1 and a plurality of blades 2 connected to the hub 1 in the circumferential direction, the hub 1 having a first end face 11 and a second end face 12 opposite to each other, the main body 20 of the blade 2 including a first edge 21 close to the first end face 11 and a second edge 22 close to the second end face 12, and the fan blade is defined as being placed forward when the first end face 11 is located above the second end face 12. The blade 2 includes an extension portion 23, the extension portion 23 extends from a position close to the first edge 21 and is arranged at an angle to the main body 20, wherein when the fan blade is placed forward, the extension direction of the main body 20 is inclined at an acute angle or an obtuse angle to the tangent direction of the connecting portion of the hub 1.

[0032] In this embodiment, the extension portion 23 can extend to any side of the two sides of the blade 2 body 20. In the actual production process, an adaptive selection can be made according to actual needs. The connection between the blade 2 body 20 and the hub 1 is a connection portion, which can be regarded as a connection point. The tangent direction of the connection point is the tangent of the connection point on the circumference of the hub 1. When the fan blade is placed forward (the embodiments shown in this disclosure are all based on the example of the fan blade being placed forward), the extension direction of the blade 2 body 20 is set at an acute angle or an obtuse angle to the tangent direction of the connection portion of the hub 1, that is, the whole formed by multiple blades 2 is set to rotate clockwise or counterclockwise relative to the hub 1 in the circumferential direction of the hub 1, thereby meeting the use requirements that the fan blade can rotate in both the forward and reverse directions, and improving versatility.

[0033] It can be understood that the extension direction of the extension portion 23 and the rotation direction of the blade 2 as a whole can be arbitrarily combined. For example, when the whole formed by multiple blades 2 is arranged in a clockwise rotation relative to the hub 1 in the circumferential direction of the hub 1, the extension portion 23 can extend to either side of the blade 2 main body 20; when the whole formed by multiple blades 2 is arranged in a counterclockwise rotation relative to the hub 1 in the circumferential direction of the hub 1, the extension portion 23 can also extend to either side of the blade 2 main body 20. Among them. In the same fan blade, the extension direction of the extension portion 23 on each blade 2 is consistent. Specifically, the whole formed by the blade 2 is arranged in a clockwise rotation relative to the hub 1 in the circumferential direction of the hub 1, and the extension direction of the extension portion 23 is consistent with the rotation direction of the blade 2 and is also arranged in the clockwise direction (refer to Figure 1 The blade 2 is formed as a whole in the circumferential direction of the hub 1 and is arranged in a clockwise rotation relative to the hub 1. The extension direction of the extension portion 23 is opposite to the rotation direction of the blade 2 and is arranged in a counterclockwise direction (refer to Figure 2The whole formed by the blades 2 is arranged in a counterclockwise rotation relative to the hub 1 in the circumferential direction of the hub 1, and the extension direction of the extension portion 23 is consistent with the rotation direction of the blades 2 and is also arranged in the counterclockwise direction (not shown in the figure); the whole formed by the blades 2 is arranged in a counterclockwise rotation relative to the hub 1 in the circumferential direction of the hub 1, and the extension direction of the extension portion 23 is opposite to the rotation direction of the blades 2 and is arranged in the clockwise direction (refer to Figure 3 shown).

[0034] In one embodiment, the maximum distance between the extension portion 23 and the main body 20 is defined as the height of the extension portion 23, the maximum length of the extension portion 23 in a direction that satisfies the parallel condition with the direction of the main body 20 is defined as the thickness of the extension portion 23, the height of the extension portion 23 is smaller than the distance between two adjacent main bodies 20, and the distance between the first side 21 and the second side 22 is greater than the thickness of the extension portion 23.

[0035] In this embodiment, since the extension portion 23 has a height and thickness, when the fan blade rotates, the air resistance of the blade 2 during operation can be reduced in the rotation direction of the fan blade, so that the fan blade is not easily deformed during rotation, the air volume is increased, and the noise can be reduced.

[0036] In one embodiment, in the cross section of the extension portion 23 , the extension portion 23 is rectangular.

[0037] In this embodiment, in the cross section of the extension portion 23, the area of ​​the rectangle of the extension portion 23 can be adaptively designed according to actual production needs, and the long side of the rectangle can be arranged to meet the vertical condition or parallel condition with the main body 20 of the blade 2, or can also be arranged at an acute angle or an obtuse angle with the main body 20 of the blade 2. It can be understood that the rectangular extension portion 23 can extend to either side of the two sides of the main body 20 of the blade 2, for example, the extension portion 23 is extended in the clockwise direction (refer to Figure 1 Alternatively, the extension portion 23 is arranged to extend in a counterclockwise direction (refer to Figure 2 The blades 2 are integrally formed and arranged to rotate clockwise or counterclockwise relative to the hub 1 in the circumferential direction of the hub 1.

[0038] Reference Figure 4 and Figure 5 As shown, in one embodiment, in the cross section of the extension portion 23 , the extension portion 23 is trapezoidal.

[0039] In this embodiment, in the cross section of the extension portion 23, the area and shape of the trapezoidal shape of the extension portion 23 can be adaptively designed according to actual production needs, and the height of the trapezoidal shape can be set to meet the parallel condition with the main body 20 of the blade 2, or can also be set at an acute angle or an obtuse angle with the main body 20 of the blade 2. It can be understood that the trapezoidal extension portion 23 can extend to either side of the main body 20 of the blade 2. For example, the extension portion 23 is extended in the clockwise direction (refer to Figure 4 and Figure 5 shown), where Figure 4 The angle between the lower base of the middle trapezoid and the main body 20 of the blade 2 is greater than Figure 5 Alternatively, the extension portion 23 is extended in the counterclockwise direction (not shown in the figure). The whole formed by the blade 2 is arranged to rotate clockwise or counterclockwise relative to the hub 1 in the circumferential direction of the hub 1.

[0040] Reference Figure 6 and Figure 7 As shown, in one embodiment, in the cross section of the extension portion 23 , the extension portion 23 is triangular.

[0041] In this embodiment, on the cross section of the extension portion 23, the area and shape of the triangle of the extension portion 23 can be adaptively designed according to actual production needs. It can be understood that the triangular extension portion 23 can extend to either side of the two sides of the blade 2 body 20. For example, the extension portion 23 is extended in the clockwise direction (not shown in the figure); or the extension portion 23 is extended in the counterclockwise direction (refer to Figure 6 and Figure 7 The blades 2 are integrally formed and arranged to rotate clockwise or counterclockwise relative to the hub 1 in the circumferential direction of the hub 1.

[0042] Reference Figure 8 As shown, in one embodiment, in the cross section of the extension portion 23 , the extension portion 23 is in an arc-shaped circle or a sector shape.

[0043] In this embodiment, in the cross section of the extension portion 23, the area and shape of the arc circle or sector of the extension portion 23 can be adaptively designed according to actual production needs. In addition, the extension portion 23 can also be any shape with rounded corners or sharp corners. It can be understood that the arc circle or sector extension portion 23 can extend to either side of the two sides of the blade 2 body 20. For example, the extension portion 23 is extended in the clockwise direction (not shown in the figure); or the extension portion 23 is extended in the counterclockwise direction (refer to Figure 8 The blades 2 are integrally formed and arranged to rotate clockwise or counterclockwise relative to the hub 1 in the circumferential direction of the hub 1.

[0044] In one embodiment, based on any of the above embodiments, the main body 20 of the blade 2 has a root 201 close to the hub 1 and a top 202 away from the hub 1, and the extension 23 extends from the root 201 to the top 202 (not shown in the figure).

[0045] Reference Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, in one embodiment, the main body 20 of the blade 2 has a root 201 close to the hub 1 and a top 202 away from the hub 1, and the fan blade also includes a structural ring 3, which is located between the root 201 and the top 202 and is concentric with the hub 1, and the extension portion 23 is extended from the structural ring 3 to the top 202.

[0046] In this embodiment, in the cross section of the extension portion 23, the extension portion 23 is rectangular, trapezoidal, triangular, arc-shaped, fan-shaped or any shape with rounded or sharp corners. The extension portion 23 can extend to either side of the blade 2 body 20, and the blade 2 as a whole is arranged to rotate clockwise or counterclockwise relative to the hub 1 in the circumferential direction of the hub 1.

[0047] Reference Figure 2 and Figure 3 As shown, in one embodiment, the main body 20 of the blade 2 has a root 201 close to the hub 1 and a top 202 away from the hub 1, and the fan blade also includes a structural ring 3, which is located between the root 201 and the top 202 and is concentric with the hub 1, and the extension portion 23 extends from any position between the root 201 and the structural ring 3 to the top 202.

[0048] In this embodiment, in the cross section of the extension portion 23, the extension portion 23 is rectangular, trapezoidal, triangular, arc-shaped, fan-shaped or any shape with rounded or sharp corners. The extension portion 23 can extend to either side of the blade 2 body 20, and the blade 2 as a whole is arranged to rotate clockwise or counterclockwise relative to the hub 1 in the circumferential direction of the hub 1.

[0049] The present disclosure also provides a fan, including a housing and a drive assembly, wherein a fan blade as in any of the above-mentioned embodiments is arranged in the housing, and the fan blade is connected to the drive assembly. The drive assembly is used to control the start and stop of the rotation of the fan blade. Since the fan is provided with the fan blade of the present disclosure, the air resistance of the blade 2 during operation can be reduced, so that the fan blade is not easily deformed during rotation, the air volume is increased, and the noise can be reduced.

[0050] In the description of the present disclosure, it is necessary to understand that the orientation or positional relationship indicated by the directional words is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that spatially relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein.

[0054] The present disclosure has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present disclosure to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present disclosure is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present disclosure, and these variations and modifications all fall within the scope of protection claimed by the present disclosure. The scope of protection of the present disclosure is defined by the attached claims and their equivalents.

Claims

1. A fan blade, comprising a hub (1) and a plurality of blades (2) connected to the hub (1) in a circumferential direction, wherein the hub (1) has a first end face (11) and a second end face (12) opposite to each other, a main body (20) of the blade (2) comprises a first edge (21) close to the first end face (11) and a second edge (22) close to the second end face (12), and the fan blade is defined as being in a forward position when the first end face (11) is located above the second end face (12), and characterized in that: The blade (2) comprises an extension portion (23), the extension portion (23) extending from a position close to the first edge (21) and arranged at an angle with the main body (20); wherein, when the fan blade is placed in the forward direction, the extension direction of the main body (20) is inclined at an acute angle or an obtuse angle with the tangent direction of the connection portion of the hub (1).

2. The fan blade according to claim 1, characterized in that: The maximum distance between the extension portion (23) and the main body (20) is defined as the height of the extension portion (23); the maximum length of the extension portion (23) in a direction that satisfies a parallel condition with the direction of the main body (20) is defined as the thickness of the extension portion (23); the height is smaller than the distance between two adjacent main bodies (20); and the distance between the first side (21) and the second side (22) is larger than the thickness.

3. The fan blade according to claim 1, characterized in that: In the cross section of the extension portion (23), the extension portion (23) is rectangular.

4. The fan blade according to claim 1, characterized in that: In the cross section of the extension portion (23), the extension portion (23) is trapezoidal.

5. The fan blade according to claim 1, characterized in that: In the cross section of the extension portion (23), the extension portion (23) is triangular.

6. The fan blade according to claim 1, characterized in that: In the cross section of the extension portion (23), the extension portion (23) is in the shape of an arc circle or a sector.

7. The fan blade according to any one of claims 3 to 6, characterized in that: The main body (20) has a root portion (201) close to the wheel hub (1) and a top portion (202) far from the wheel hub (1), and the extension portion (23) is arranged to extend from the root portion (201) to the top portion (202).

8. The fan blade according to any one of claims 3 to 6, characterized in that: The main body (20) has a root (201) close to the hub (1) and a top (202) away from the hub (1), and the fan blade also includes a structural ring (3), the structural ring (3) is located between the root (201) and the top (202), and is concentrically arranged with the hub (1), and the extension portion (23) is extended from the structural ring (3) to the top (202).

9. The fan blade according to any one of claims 3 to 6, characterized in that: The main body (20) has a root (201) close to the hub (1) and a top (202) away from the hub (1); the fan blade also includes a structural ring (3), the structural ring (3) is located between the root (201) and the top (202) and is concentrically arranged with the hub (1); the extension portion (23) extends from any position between the root (201) and the structural ring (3) to the top (202).

10. A fan, comprising a housing and a drive assembly, characterized in that: The shell is provided with a fan blade as described in any one of claims 1 to 9, and the fan blade is connected to the driving assembly.

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