A wheel hub fan blade

Abstract

This utility model relates to a hub fan blade, comprising: an integrally formed: a central hub; blades extending radially outward from the annular array of the central hub; and an outer ring connected to the end of the blades away from the central hub, wherein the cross-section of the outer ring is trapezoidal and its thickness gradually increases along an axial direction.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and in particular to a hub fan blade. Background Technology

[0002] A hub fan is a type of cooling fan designed with the shape of a car wheel in mind. The most basic hub fan consists of a hub and multiple blades attached to the outer circumference of the hub. In the field of cooling fans, greater airflow and lower noise have always been the goals pursued by those skilled in the art. Existing hub fans typically increase the blade area to enhance airflow and cooling performance. However, as the blade area increases, the air pressure on the blades also increases, which can easily lead to imbalance vibration and noise. Utility Model Content

[0003] In view of the above situation, it is necessary to propose a low-noise hub fan blade.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a hub fan blade, comprising an integrally formed:

[0005] Center hub;

[0006] The blades extend radially outward from the central hub annular array;

[0007] The outer ring is connected to the end of the blade away from the central hub, and the cross-section of the outer ring is trapezoidal with its thickness gradually increasing along an axial direction.

[0008] Furthermore, one side of the blade is concave and the other side is convex, and the outer ring gradually thickens in the direction of the concave surface.

[0009] Furthermore, the central hub is composed of a base plate and an inner ring body, forming a receiving groove that opens to one end in the axial direction, and the central hub opens in the direction of the concave surface.

[0010] Furthermore, the blade is connected to the inner ring body and has reinforcing ribs extending into the base plate.

[0011] Furthermore, the width of the blade gradually increases in the direction away from the central hub.

[0012] Furthermore, the connection between the blade and the inner ring body is inclined downward or arc-shaped by the base plate and has a gap between it and the end face of the inner ring body.

[0013] Furthermore, the connection between the blade and the outer ring extends obliquely or in an arc shape from the top to the bottom of the outer ring.

[0014] Furthermore, in the pitch state, the gap between adjacent blades is 1:4 to 1:8 of the blade width.

[0015] Furthermore, the cross-section of the outer ring is a right trapezoid, the inner wall of the outer ring is parallel to the axis, and the outer wall of the outer ring forms an inclined angle with the axis.

[0016] Furthermore, the included angle of inclination is 2-10 degrees.

[0017] The beneficial effects of this invention are as follows: one end of the blade is connected to the central hub, and the other end is connected to the outer ring, which enhances the stability of the blade. The outer ring is trapezoidal, and its thickness gradually increases, resulting in a gradual increase in its weight. This changes the center of gravity of the hub fan blade, causing it to move axially towards the thicker end of the outer ring. The center of gravity is closer to the axis of rotation, reducing the force required to detach from the axis of rotation. Furthermore, the stability of the connection between the blade and the thicker end of the outer ring is improved. When the thicker end of the outer ring is the air outlet, it can withstand a higher load, thereby effectively improving the problem of fan blade imbalance and vibration. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of a hub fan blade according to an embodiment of the present utility model;

[0019] Figure 2 This is a partially enlarged structural schematic diagram of a hub fan blade according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a hub fan blade according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a hub fan blade from another direction according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of a hub fan blade in another direction according to an embodiment of this utility model.

[0023] Label Explanation:

[0024] 100. Center hub; 110. Base plate; 120. Inner ring; 130. Receiving groove; 140. Bearing groove;

[0025] 200, blade; 210, convex surface; 220, concave surface; 230, reinforcing rib; 300, outer ring;

[0026] 310. Inclination angle. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a hub fan blade, in conjunction with the accompanying drawings and embodiments, is provided. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the scope of the utility model.

[0028] Please refer to Figures 1-5 A hub fan blade comprising:

[0029] Center hub 100;

[0030] Blades 200 extend radially outward from a ring array of the central hub 100;

[0031] The outer ring 300 is connected to the end of the blade 200 away from the central hub 100. The cross-section of the outer ring 300 is trapezoidal and its thickness gradually increases along one axial direction.

[0032] One end of blade 200 is connected to the central hub 100, and the other end is connected to the outer ring 300, enhancing the stability of blade 200. The outer ring 300 is trapezoidal, with its thickness gradually increasing, resulting in a gradual increase in its weight. This alters the center of gravity of the hub fan blade, causing it to shift axially towards the thicker end of the outer ring 300. With the center of gravity closer to the axis of rotation, the force required to detach from the axis of rotation is reduced, and the stability of the connection between blade 200 and the thicker end of the outer ring 300 is improved. When the thicker end of the outer ring 300 is the air outlet, it can withstand a higher load, thus effectively improving the problem of fan blade imbalance and vibration.

[0033] Please refer to Figure 1 , Figure 3 and Figure 4 One side of the blade 200 is concave 220, and the other side is convex 210. The outer ring 300 gradually thickens towards the direction of the concave 220. That is, the outer ring 300 thickens towards the air outlet direction.

[0034] Please refer to Figure 4 The center hub 100 is composed of a base plate 110 and an inner ring 120, forming a receiving groove 130 that opens to one end in the axial direction. The center hub 100 opens in the direction facing the concave surface 220. Typically, a bearing groove 140 is provided in the receiving groove 130 to connect the rotating shaft.

[0035] Please refer to Figure 3 The blade 200 is connected to the inner ring 120 and extends to the base plate 110 with reinforcing ribs 230. This improves the stability of the blade 200 connection, effectively increases the compressive strength of the blade 200, and reduces the vibration of the blade 200.

[0036] Please refer to Figures 3-5The width of the blades 200 gradually increases in the direction away from the central hub 100. Optimizing the shape of the blades 200 effectively increases the working area of ​​the fan blades, increases air volume and air pressure, thereby enhancing the heat dissipation effect.

[0037] Please refer to Figure 3 and Figure 4 The connection between the blade 200 and the inner ring 120 extends downward from the base plate 110 in an inclined or arc shape, and there is a gap between them and the end face of the inner ring 120. The gap is set to avoid interference with the blade 200 when connected to other equipment.

[0038] Please refer to Figure 3 and Figure 4 The connection between the blade 200 and the outer ring 300 extends from the top of the outer ring 300 towards the bottom in an inclined or arc-shaped manner. Understandably, the connection is flush with the upper and lower end faces of the outer ring 300.

[0039] Please refer to Figure 5 In the pitch state, the gap between adjacent blades 200 is 1:4-1:8 of the width of blade 200.

[0040] Please refer to Figure 1 and Figure 2 The outer ring 300 has a right-angled trapezoidal cross-section. The inner wall of the outer ring 300 is parallel to the axis, and the outer wall of the outer ring 300 is inclined at an angle of 31° to the axis. That is, the thickness of the outer ring 300 is changed while ensuring the axial direction of the airflow.

[0041] Preferably, the angle of inclination 310 is 2-10 degrees.

[0042] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0044] In summary, the hub fan blade provided by this utility model has one end connected to the central hub and the other end connected to the outer ring, enhancing the stability of the blade. The outer ring is trapezoidal, with its thickness gradually increasing, resulting in a gradual increase in weight. This alters the center of gravity of the hub fan blade, causing it to shift axially towards the thicker end of the outer ring. The center of gravity is closer to the axis of rotation, reducing the force required to detach from the axis and improving the stability of the connection between the blade and the thicker end of the outer ring. When the thicker end of the outer ring is the air outlet, it can withstand a higher load, thus effectively improving the problem of fan blade imbalance and vibration.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A wheel hub fan blade, characterized by, Including one-piece molded: Center hub; The blades extend radially outward from the central hub annular array; The outer ring is connected to the end of the blade away from the central hub, and the cross-section of the outer ring is trapezoidal with its thickness gradually increasing along an axial direction.

2. A wheel hub blade according to claim 1, wherein One side of the blade is concave, and the other side is convex. The outer ring gradually thickens in the direction of the concave side.

3. A wheel hub blade according to claim 2, wherein, The central hub is composed of a base plate and an inner ring body, forming a receiving groove that opens to one end in the axial direction. The central hub opens in the direction that the concave surface faces.

4. A wheel hub blade according to claim 3, wherein, The blade is connected to the inner ring and has reinforcing ribs extending to the base plate.

5. A wheel hub blade according to claim 3, wherein, The width of the blade gradually increases in the direction away from the central hub.

6. A wheel hub blade according to claim 5, wherein, The connection between the blade and the inner ring body is inclined downward or extended in an arc shape by the base plate and has a gap between it and the end face of the inner ring body.

7. A wheel hub blade according to claim 1, wherein, The connection between the blade and the outer ring extends from the top of the outer ring towards the bottom in an inclined or arc-shaped manner.

8. A wheel hub blade according to claim 1, wherein, In the pitch state, the gap between adjacent blades is 1:4 to 1:8 of the blade width.

9. A wheel hub blade according to claim 1, wherein, The outer ring has a right trapezoidal cross-section, the inner wall of the outer ring is parallel to the axis, and the outer wall of the outer ring forms an inclined angle with the axis.

10. A wheel hub blade according to claim 9, wherein, The angle of inclination is 2-10 degrees.

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