Centrifugal heat dissipation fan blade with double-layer structure

Abstract

According to the technical scheme, the centrifugal heat dissipation fan blade of the double-layer structure is characterized in that the centrifugal heat dissipation fan blade comprises an annular main body piece, a connecting shaft is arranged in the center of the main body piece, an inserting hole is formed in the center of the connecting shaft, and a plurality of inner ring blades which are evenly and vertically distributed are arranged between the main body piece and the connecting shaft; a plurality of outer ring blades which are uniformly and obliquely distributed are arranged on the outer wall of the main body piece, and the joints of the outer ring blades and the main body piece are designed to be chamfered in a cambered surface shape; the double-layer blade structure of the inner ring blade and the outer ring blade is arranged, and the fillet design is arranged at the connecting position of the outer ring blade, so that the defects that a traditional fan blade structure is large in noise and vibration, insufficient in air quantity under the same size and large in weight can be overcome, and the overall performance of the fan blade is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat dissipation fan blade technical field, especially in a double -layer structure's centrifugal heat dissipation fan blade. BACKGROUND

[0002] In the existing heat dissipation fan blade technology, the traditional fan blade structure often has some shortcomings. For example, most fan blade structures will produce a large noise and vibration in the process of rotating operation, not only affect the comfort of the use environment, but also show that the working efficiency of the fan blade has a problem, affecting the stability and service life of the blade itself and the corresponding equipment. At the same time, part of the fan blade is large in volume but insufficient in air volume, or is large in weight due to unreasonable structure design, and is difficult to apply in some equipment with weight requirements. Therefore, a new heat dissipation fan blade is needed to solve these problems. SUMMARY

[0003] In order to solve the defects of the traditional heat dissipation fan blade structure, such as large noise and vibration, insufficient air volume, and large weight under the same volume due to unreasonable structure design, the utility model provides a double-layer structure's centrifugal heat dissipation fan blade.

[0004] In order to solve the above problems, the utility model provides the following technical scheme:

[0005] A double-layer structure's centrifugal heat dissipation fan blade, characterized by comprising a ring-shaped main body, a connecting shaft is arranged at the center of the main body, a plug hole is arranged at the center of the connecting shaft, a plurality of uniform and vertical distributed inner ring blades are arranged between the main body and the connecting shaft, a plurality of uniform and inclined distributed outer ring blades are arranged on the outer wall of the main body, and the connection between the outer ring blades and the main body is designed as an arc-shaped rounded corner.

[0006] The double-layer structure's centrifugal heat dissipation fan blade as described above, characterized in that the top end of the connecting shaft is lower than the top end of the main body, the bottom end of the inner ring blade and the connecting shaft is flush with the bottom end of the main body, the width of the inner ring blade near one end of the main body is greater than the width near one end of the connecting shaft, and the top end and the bottom end of the outer ring blade are flush with the top end and the bottom end of the main body, respectively.

[0007] The double-layer structure's centrifugal heat dissipation fan blade as described above, characterized in that the outer circumferential surface of the corresponding connection between the outer ring blade and the main body is perpendicular, and the inclination angle between the outer ring blade and the corresponding vertical surface ranges from 30° to 55°.

[0008] The double-layer structure's centrifugal heat dissipation fan blade as described above, characterized in that the outer edge of the outer ring blade is arc-shaped, and the outer edge angle of the upper end of the outer ring blade is arc-shaped.

[0009] The centrifugal heat dissipation fan blade with double-layer structure has the characteristics that a circular air outlet is arranged at the center of the upper end of the main body, and the diameter of the air outlet is smaller than the diameter of the main body.

[0010] The centrifugal heat dissipation fan blade with double-layer structure has the characteristics that the main body, the connecting shaft, the inner ring blade and the outer ring blade are integrated.

[0011] Compared with the prior art, the centrifugal heat dissipation fan blade with double-layer structure has the following advantages:

[0012] The centrifugal heat dissipation fan blade with double-layer structure has the following advantages: the double-layer blade structure and the rounded corner design can effectively increase the air inlet area and the air volume driven by the blade rotation; the rounded corner design can optimize the airflow path, so that the airflow flowing through the outer ring blade is smoother, thereby reducing the resistance of the airflow flowing through the outer ring blade, reducing air turbulence and friction, effectively reducing the vibration of the outer ring blade and the whole fan blade, reducing noise generation, improving the rotation efficiency of the fan blade, and reducing the weight of the fan blade while ensuring the structural strength. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the first perspective view of the centrifugal heat dissipation fan blade;

[0014] Figure 2 is the second perspective view of the centrifugal heat dissipation fan blade;

[0015] Figure 3 is the top view of the centrifugal heat dissipation fan blade;

[0016] Figure 4 is Figure 3 the sectional view in the A-A direction of the centrifugal heat dissipation fan blade;

[0017] Figure 5 is Figure 3 the sectional view in the B-B direction of the centrifugal heat dissipation fan blade;

[0018] In the figure: 1 is the main body; 2 is the connecting shaft; 3 is the insertion hole; 4 is the inner ring blade; 5 is the outer ring blade; 6 is the air outlet. DETAILED DESCRIPTION

[0019] The technical features of the centrifugal heat dissipation fan blade with double-layer structure will be further described in detail below in combination with the drawings so that those skilled in the art can understand the description of up, down, left and right directions and the directions shown in the drawings are consistent. Figure 4

[0020] ​A type of centrifugal cooling fan with a double-layer structure, such as Figures 1-5 As shown, the device includes a ring-shaped main body 1, a connecting shaft 2 at the center of the main body 1, an insertion hole 3 at the center of the connecting shaft 2, several evenly and vertically distributed inner ring blades 4 between the main body 1 and the connecting shaft 2, and several evenly and obliquely distributed outer ring blades 5 on the outer wall of the main body 1. The connection between the outer ring blades 5 and the main body 1 is a rounded, arc-shaped design. The insertion hole 3 is used to insert a motor shaft. The hollowed-out right-angle design between the inner ring blades 4 and the main body 1 ensures structural integrity. While increasing strength, the weight of the fan blades is reduced. Both sides of the connection between the outer ring blade 5 and the main body 1 are designed with rounded corners in an arc shape. The double-layer blade structure and rounded corner design can effectively increase the air intake area and increase the air volume driven by the rotation of the blades. At the same time, the rounded corner design can optimize the airflow path, making the airflow smoother when passing through the outer ring blade 5, reducing the resistance of the air when it flows through the outer ring blade 5, reducing air turbulence and friction, thereby effectively reducing the vibration generated by the outer ring blade 5 and the fan blade as a whole, so as to reduce the generation of noise and improve the rotation efficiency of the fan blades.

[0021] Specifically, the top of the connecting shaft 2 is lower than the top of the main body 1, the bottom of the inner ring blade 4 and the connecting shaft 2 are flush with the bottom of the main body 1, the width of the inner ring blade 4 near the main body 1 is greater than the width near the connecting shaft 2, and the top and bottom of the outer ring blade 5 are flush with the top and bottom of the main body 1, respectively. The inner ring blade 4 can act as a reinforcing rib. The shape and angle design of the inner ring blade 4 and the outer ring blade 5 can optimize the rotational stress state of the blades. The double-layer blade structure helps to balance the centrifugal force in all directions when the blades rotate, thereby effectively reducing or eliminating the vibration caused by the uneven centrifugal force when the blades rotate.

[0022] Furthermore, both the outer ring blade 5 and the inner ring blade 4 are perpendicular to the outer tangent surface of the corresponding connection point of the main body 1. The inclination angle between the outer ring blade 5 and the corresponding vertical surface ranges from 30° to 55°. The smaller inclination angle allows the outer ring blade 5 to effectively drive airflow when rotating, achieving a large air volume effect. Meanwhile, the inner ring blade 4 has ten blades, and the outer ring blade 5 has seven blades. The reasonable design of the number and angle of the blades can achieve a larger air volume output with the same blade volume, improving the heat dissipation efficiency of the blades.

[0023] Specific, the outer edge of the outer ring blade 5 is arc-shaped, the upper end of the outer ring blade 5 is arc-shaped, so that the outer ring blade 5 is easier to cut into the airflow when rotating, can reduce the disturbance to the airflow and the rotating wind resistance, thereby reducing the vibration and noise of the outer ring blade 5, and also helps to improve the working efficiency of the fan blade, so that the fan blade drives more air flow.

[0024] In addition, a circular air outlet 6 is arranged at the center of the upper end of the main body 1, the diameter of the air outlet 6 is smaller than the diameter of the main body 1, so as to reduce the mutual influence between the air flow blown by the inner ring blade 4 and the outer ring blade 5, avoid the collision of the two air flows, make the air flow blow farther, so that the heat can be carried away farther by the air flow when radiating, thereby enhancing the heat dissipation effect.

[0025] Specifically, the main body 1, the connecting shaft 2, the inner ring blade 4 and the outer ring blade 5 are an integral part, which is convenient for manufacturers to process and produce, and has high strength and is not easy to be damaged.

[0026] The embodiments of the utility model only describe the preferred embodiments of the utility model, and are not limited to the precise structure shown in the above description and the drawings, and various modifications and changes can be made without departing from the protection scope; various modifications and improvements of the technical scheme of the utility model made by the engineering technicians in the art without departing from the design idea of the utility model shall fall within the protection scope of the utility model.

Claims

1. A centrifugal cooling fan blade of double-layer structure, characterized in that: The utility model relates to a kind of air diffuser, including annular main body (1), connecting shaft (2) is equipped at the center of the main body (1), socket (3) is equipped at the center of the connecting shaft (2), several evenly and vertically distributed inner ring blades (4) are equipped between the main body (1) and the connecting shaft (2), several evenly and obliquely distributed outer ring blades (5) are equipped on the outer wall of the main body (1), and the outer ring blade (5) and the connection of the main body (1) are arc-shaped rounded corner design.

2. The double-layer structure's centrifugal cooling fan blade according to claim 1, wherein: The top end of the connecting shaft (2) is lower than the top end of the main body (1), the bottom end of the inner ring blade (4) and the connecting shaft (2) is flush with the bottom end of the main body (1), the width of the inner ring blade (4) near one end of the main body (1) is greater than the width near the connecting shaft (2) one end, and the top end and the bottom end of the outer ring blade (5) are flush with the top end and the bottom end of the main body (1) respectively.

3. The double-layer structure's centrifugal cooling fan blade according to claim 1, wherein: The outer ring blade (5) and the inner ring blade (4) are perpendicular to the corresponding outer tangent surface of the main body (1), and the inclination angle between the outer ring blade (5) and the corresponding vertical surface is in the range of 30°-55°.

4. The double-layer structure centrifugal cooling fan blade according to any one of claims 1 to 3, characterized in that: The outer edge of the outer ring blade (5) is arc-shaped, and the outer edge corner of the upper end of the outer ring blade (5) is arc-shaped.

5. The double-layer structure centrifugal cooling fan blade according to any one of claims 1 to 3, characterized in that: A circular air outlet (6) is provided at the center of the upper end of the main body (1), and the diameter of the air outlet (6) is smaller than the diameter of the main body (1).

6. The double-layered centrifugal fan blade of claim 1, wherein: The main body (1), the connecting shaft (2), the inner ring blade (4) and the outer ring blade (5) are an integral part.

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