A low-noise cicada-wing fan blade

Abstract

The present invention relates to a low-noise cicada-wing-shaped fan blade, which is applied in the technical field of radiators to solve the technical problem of low air volume of existing fans. The fan blade comprises a connector, blades uniformly distributed circumferentially on the connector, a plurality of support plates for strengthening the strength of the heat sink are distributed circumferentially around the connector, at least two blades are fixedly connected to the same support plate, and the support plate is located at any position of the blade along the length direction of the blade. The present invention has the effect of increasing the air volume sucked by the fan blade while ensuring that the blade will not break.

Description

Technical Field

[0001] The invention relates to the technical field of radiators, and more particularly to a low-noise cicada-wing type fan blade. Background Art

[0002] With the development of science and technology, intelligence and informatization are the trend of contemporary development, and both intelligence and informatization need to rely on servers. A server is a high-performance computer that provides various services to client computers. Its high performance is mainly reflected in high-speed computing power, long-term reliable operation, and strong external data throughput. The server generates heat during the data calculation process, so fans are needed to dissipate heat.

[0003] like Figure 1 As shown, a fan blade includes a connector 1 located in the center and blades 2 evenly distributed circumferentially on the connector 1. When the fan blade rotates, the air is stirred so that the air flows unidirectionally along a specific curved surface of the blade, thereby forming wind. When the fan blade rotates at the same speed, the more blades there are on the fan blade, the greater the air volume and the better the heat dissipation effect. When the number of blades increases, the blades need to be made thinner. The thinner the blades, the weaker the strength of the blades. The disadvantage is that the blades are very easy to break. In view of the above problems, it is necessary to design an ultra-thin blade to improve the heat dissipation performance and prevent the blades from breaking. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a low-noise cicada-wing fan blade, which has the advantage of increasing the air suction volume of the fan blade while ensuring that the blade will not break.

[0005] The above technical purpose of the present invention is achieved through the following technical scheme: a low-noise cicada-wing fan blade, including a connecting body and blades evenly distributed circumferentially on the connecting body, a plurality of supporting plates for strengthening the strength of the heat sink are distributed circumferentially around the connecting body, at least two blades are fixedly connected to the same supporting plate, and the supporting plate is located at any position of the blade along the length direction of the blade.

[0006] The above arrangement achieves the following effects: one end of the blade is fixed to the connector, the portion of the blade close to the connector has a stronger anti-fracture ability, and the portion of the blade far from the connector has a weaker anti-fracture ability. Since the blade is very thin and has a weak anti-fracture ability, the support sheet connects two or more blades into a whole, so that the middle of the blade can be supported, thereby improving the anti-fracture ability of the blade.

[0007] It is further provided that: a protrusion is integrally provided at one end of the support sheet close to the connecting body, and the protrusion is fixedly connected to the connecting body.

[0008] The effect achieved by the above-mentioned setting is as follows: the support sheet is connected to the connector through the protrusion. For blades of the same length, the shorter the distance between the farthest point of the blade and the support point, the stronger the resistance of the blade to fracture. Since the gas passes between adjacent blades, the support sheet seals the gaps between adjacent blades, which will affect the air volume. However, the support sheet is arranged close to one end of the connector, and the effect on the air volume can be ignored. This can not only improve the resistance of the blade to fracture, but also increase the wind suction capacity of the fan blade.

[0009] It is further arranged that: the support sheets are fixed between adjacent blades, adjacent support sheets are arranged at intervals, and at least one support sheet is distributed on the same blade along the length direction of the blade.

[0010] The above arrangement achieves the following effect: when the blade is very long, a plurality of support sheets may be provided to increase the heat dissipation of the blade.

[0011] It is further arranged that the length of the support sheet is l=(20-60)%L, wherein l represents the length of the support sheet, and L represents the length of the blade.

[0012] The above arrangement achieves the following effects: the longer the total length of the blade, the better the support capacity of the blade, and the greater the impact on the air volume; the opposite is true. When the length of the support sheet accounts for (20-60)% of the total length of the blade, the comprehensive performance is better than the existing technology.

[0013] It is further configured that the thickness of the support sheet is 0.1-0.3 mm.

[0014] The effect achieved by the above arrangement is that the support sheet can support the blade within this thickness range.

[0015] It is further configured that the support sheet comprises a large support sheet and a small support sheet, and the small support sheet and the large support sheet are spaced apart.

[0016] The effect achieved by the above arrangement is: for longer or thinner blades, this combination is more flexible and ensures that while increasing the air volume of the fan, the blade's resistance to fracture will not be reduced.

[0017] It is further provided that the upper surface of the support sheet is flush with the upper surface of the blade, and the lower surface of the support sheet and one side close to the connector is set as a smooth curved surface.

[0018] The effect achieved by the above setting is as follows: the airflow will flow from the gaps between the blades, and the flow direction includes along the length and width of the blades. At this time, the friction between the gas and the support sheet will generate noise, and the curved surface will soften the airflow, allowing the gas to flow smoothly, thereby reducing noise.

[0019] It is further arranged that: the support sheet is located in the middle of the blade, and the upper surface and the lower surface of the support sheet and the side close to the connector are set as smooth curved surfaces.

[0020] The effect achieved by the above setting is as follows: the airflow will flow from the gaps between the blades, and the flow direction includes along the length and width of the blades. At this time, the friction between the gas and the support sheet will generate noise, and the curved surface will soften the airflow, allowing the gas to flow smoothly, thereby reducing noise.

[0021] It is further provided that: the lower surface of the support sheet is flush with the lower surface of the blade, and the upper surface of the support sheet and one side close to the connector is set as a smooth curved surface.

[0022] The effect achieved by the above setting is as follows: the airflow will flow from the gaps between the blades, and the flow direction includes along the length and width of the blades. At this time, the friction between the gas and the support sheet will generate noise, and the curved surface will soften the airflow, allowing the gas to flow smoothly, thereby reducing noise.

[0023] It is further configured that: the angle between the support sheet and the blade is an acute angle.

[0024] The above arrangement achieves the following effect: the weaker the deformation resistance of the linear sheet-like object, the stronger the deformation resistance of the folded sheet-like object. Based on this principle, the smaller the angle between the support sheet and the blade, the better the support sheet's ability to support the blade.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. After reducing the thickness of the blades, the fan blades of the same size have more blades, which increases the air volume and improves the heat dissipation performance;

[0027] 2. The setting of the support sheet ensures that the cicada-wing-shaped blades will not break, thus improving the blades' anti-breakage ability;

[0028] 3. The number, size and position of the support pieces can be adjusted and combined at will, and the combination design can be carried out for blades of different models to ensure that the air volume of the fan blades is increased while ensuring that the fan blades will not break. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a fan blade in the prior art;

[0030] Figure 2 It is a three-dimensional structural schematic diagram of this embodiment;

[0031] Figure 3 is a schematic diagram of the structure of the embodiment from a top view;

[0032] Figure 4is a schematic diagram of the structure of the blades and the support sheet of this embodiment;

[0033] Figure 5 This is a schematic diagram of the combined structure of support sheets of different sizes in this embodiment;

[0034] Figure 6 is a schematic diagram of the structure of the embodiment in which the support sheet is located in the middle of the blade;

[0035] Figure 7 is a schematic diagram of the structure in which the support sheet of this embodiment is located at the lower end of the blade;

[0036] Figure 8a This is a schematic diagram of the structure of the curved surface when the support sheet of this embodiment is located at the upper end of the blade

[0037] Figure 8b This is a schematic diagram of the structure of the curved surface when the support sheet of this embodiment is located in the middle of the blade

[0038] Figure 8c It is a schematic diagram of the curved surface structure when the support piece of this embodiment is located at the lower end of the blade.

[0039] In the figure: 1, connector; 2, blade; 3, support plate; 4, curved surface; 5, reinforcement ring; 6, bump. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0041] Example 1: Reference Figure 2-3 A low-noise cicada-wing type fan blade, a connector 1, blades 2 circumferentially evenly distributed on the connector 1, and a reinforcement ring 5 is provided at one end of the blade 2 away from the connector 1. A plurality of support sheets 3 are provided between the reinforcement ring 5 and the connector 1. The support sheets 3 can be distributed circumferentially around the connector 1 in a non-array or evenly distributed in an array around the connector 1. The same support sheet 3 can be connected to at least two blades 2. In this embodiment, preferably, one support sheet 3 connects two blades 2 and the support sheets 3 are distributed in an array around the connector 1.

[0042] refer to Figure 2-3 The support sheet 3 can be fixed at any position of the blade 2 along the length direction of the blade 2. In this embodiment, the support sheet 3 is preferably arranged at a position close to the connector 1, and a convex block 6 is integrally arranged on the support sheet 3, and the convex block 6 is integrally arranged with the connector 1, so that when the blade 2 becomes thinner, the connection strength between the blade 2 and the connector 1 is weakened, and the setting of the convex block 6 increases the connection strength between the blade 2 and the connector 1.

[0043] refer to Figure 2-3: The length of the support sheet 3: l=(20-60)%L, where l represents the length of the support sheet 3 and L represents the length of the blade 2. The thickness of the support sheet 3 is 0.1-0.3 mm. The support sheet 3 of the corresponding proportional length is selected according to the length of the blade 2.

[0044] refer to Figure 3 The support sheet 3 is in a quadrilateral shape, wherein two opposite sides are integrally arranged with the blade 2, and the remaining two sides are smooth curves, and the angle formed by the curve and the blade 2 is an acute angle.

[0045] Embodiment 2, referring to the figure, at least one supporting piece 3 is distributed on the same blade 2 along the length direction of the blade 2; when the blade 2 is relatively long, two or three supporting pieces 3 are arranged on the same blade 2, and in this embodiment, one supporting piece 3 is preferably arranged.

[0046] Example 3, reference Figure 5 The support sheet 3 includes a large support sheet 3 and a small support sheet 3, and the small support sheet 3 and the large support sheet 3 are arranged at intervals. When the blade 2 is not long enough to set two circles of support sheets 3 and one circle of support sheets 3 is not enough to support the blade 2, the above combination can be used.

[0047] Embodiment 3-8, referring to the figure, the support sheet 3 can be located at the upper, middle and lower positions of the blade 2 along the radial direction of the connector 1. When the upper surface of the support sheet 3 is flush with the upper surface of the blade 2, the lower surface of the support sheet 3 and the side close to the connector 1 are set as a smooth curved surface 4; when the support sheet 3 is located in the middle of the blade 2, the upper and lower surfaces of the support sheet 3 and the side close to the connector 1 are set as a smooth curved surface 4; the lower surface of the support sheet 3 is flush with the lower surface of the blade 2, and the upper surface of the support sheet 3 and the side close to the connector 1 are set as a smooth curved surface 4.

[0048] refer to Figure 3 -8. When the fan blades rotate, the airflow will flow from the gaps between the blades 2, and the flow direction includes along the length and width of the blades 2. At this time, the friction between the gas and the support sheet 3 will generate noise. The curved surface 4 softens the airflow, allowing the gas to flow smoothly, thereby reducing noise.

[0049] The implementation principle of the above embodiment is: first reduce the thickness of the blade 2, and then design the number and position of the support plates 3 according to the length of the blade 2 and the overall size of the fan blade, thereby increasing the air volume of the fan blade while ensuring the fracture resistance of the blade 2.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A low-noise cicada-wing type fan blade, comprising a connector (1) and blades (2) uniformly distributed on the connector (1) in the circumferential direction, characterized in that: A plurality of support sheets (3) for strengthening the strength of the heat sink are distributed around the connecting body (1); at least two blades (2) are fixedly connected to the same support sheet (3); the support sheet (3) is arranged along the length direction of the blade (2); a protrusion (6) is integrally provided at one end of the support sheet (3) close to the connecting body (1); the protrusion (6) is fixedly connected to the connecting body (1); the support sheet (3) is fixed between adjacent blades (2); adjacent support sheets (3) are arranged at intervals; at least one support sheet (3) is distributed on the same blade (2) along the length direction of the blade (2); the length of the support sheet (3) is l=(20-60)%L, wherein l represents the length of the support sheet (3), L represents the length of the blade (2), and the thickness of the support sheet (3) is The support sheet (3) comprises a large support sheet (3) and a small support sheet (3), the small support sheet (3) and the large support sheet (3) are arranged at intervals, the upper surface of the support sheet (3) is flush with the upper surface of the blade (2), the lower surface of the support sheet (3) and the side close to the connecting body (1) are set as a smooth curved surface (4), the support sheet (3) is located in the middle of the blade (2), the upper surface and the lower surface of the support sheet (3) and the side close to the connecting body (1) are set as a smooth curved surface (4), the lower surface of the support sheet (3) is flush with the lower surface of the blade (2), the upper surface of the support sheet (3) and the side close to the connecting body (1) are set as a smooth curved surface (4), and the angle between the support sheet (3) and the blade (2) is an acute angle.

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