Computer fan with connected blade ends

Abstract

The utility model discloses a computer fan with connected blade ends, which comprises a shaft seat, blades and a limit ring, a rotating shaft is arranged on the lower wall of the shaft seat, a shaft cover is arranged on the upper wall of the shaft seat, the blades extend outwards from the peripheral wall of the shaft seat and are distributed at intervals along the axis, the limit ring is arranged between the blades, and the limit ring is arranged between the blades. And the limiting ring is provided with a hollow groove between the adjacent blades. In actual design, the shaft seat and the limiting ring are arranged at the inner side end and the outer side end of the blade respectively, so that the supporting degree of the blade is improved, wind pressure deformation cannot occur when the fan rotates at a high speed, the limiting ring can improve the wind pressure of fluid, the fluid tends to be between the shaft seat and the limiting ring, flexible flow is reduced, and the service life of the fan is prolonged. And meanwhile, through the matched design of the limiting ring and the hollowed-out groove, noise generated by flexible flow can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of computer fans, and in particular to a computer fan with blades connected at the ends. Background Technology

[0002] Computer fans, also known as cooling fans, are generally used for heat dissipation. They are used in heat sinks and computer cases. In current designs, the faster the blades rotate, the greater the air pressure generated. However, computer fan blades are generally made of plastic, so when the air speed exceeds a predetermined value, the rotation speed cannot increase due to material limitations, thus affecting the amount of air pressure.

[0003] For example, Chinese patent CN202420495174.9 uses a dual-support structure to increase the rotational speed, but the increase in rotational speed does not significantly improve the air pressure, and there are still limitations. Summary of the Invention

[0004] The main purpose of this invention is to propose a computer fan with blades connected at the ends, which aims to improve the existing fan blade structure, thereby increasing the air pressure while increasing the rotational speed, and thus improving the fluid exchange efficiency.

[0005] To achieve the above objectives, this utility model proposes a computer fan with blades connected at the ends, comprising:

[0006] A bearing seat, wherein the lower wall of the bearing seat is provided with a rotating shaft, and the upper wall of the bearing seat is a bearing cover;

[0007] The blades extend outward from the outer peripheral wall of the bearing seat and are spaced apart along the axis;

[0008] A limiting ring is provided between the blades, and the limiting ring is provided with a hollow groove between adjacent blades.

[0009] In practical design, bearing seats and limiting rings are respectively installed at the inner and outer ends of the blades, thereby improving the support of the blades. Therefore, the fan will not experience wind pressure deformation even at high speeds.

[0010] The limiting ring can increase the air pressure of the fluid, causing the fluid to tend between the shaft seat and the limiting ring, thereby reducing turbulence. At the same time, the combination design of the limiting ring and the hollow groove can effectively reduce the noise generated by turbulence. Attached Figure Description

[0011] Figure 1 This is a three-dimensional schematic diagram of the first embodiment of the present utility model. Figure 1 ;

[0012] Figure 2 This is a three-dimensional schematic diagram of the first embodiment of the present utility model. Figure 2;

[0013] Figure 3 This is a top view of the first embodiment of the present invention;

[0014] Figure 4 This is a side view of the first embodiment of the present invention;

[0015] Figure 5 This is a schematic diagram of the second embodiment.

[0016] In the picture,

[0017] 1 is the bearing seat, 10 is the bearing cover, and 11 is the rotating shaft.

[0018] 2 represents the blade, 21 represents the air inlet surface, 22 represents the air guide surface, and 23 represents the stabilizer.

[0019] 3 is the limiting ring, 30 is the hollow groove, and 32 is the connecting piece.

[0020] 101 is the inner included angle, and 102 is the outer included angle. Detailed Implementation

[0021] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0022] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] 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. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] like Figures 1 to 5 As shown, a computer fan with blades connected at the ends includes:

[0025] A bearing seat 1, wherein the lower wall of the bearing seat 1 is provided with a rotating shaft 11, and the upper wall of the bearing seat 1 is a bearing cover 10;

[0026] Blade 2, the blade 2 extends outward from the outer peripheral wall of the bearing seat 1 and is distributed at intervals along the axis;

[0027] The limiting ring 3 is located between the blades (specifically, it can be located in the middle or rear section of the blade, and its size can be adjusted according to actual needs). The limiting ring 3 is provided with a hollow groove 30 between adjacent blades 2.

[0028] In the actual design, a bearing seat 1 and a limiting ring 3 are respectively installed at the inner and outer ends of blade 2, thereby improving the support of blade 2. Therefore, the fan will not experience wind pressure deformation even at high speeds.

[0029] The limiting ring 3 can increase the air pressure of the fluid, causing the fluid to tend between the bearing 1 and the limiting ring 3, thereby reducing turbulence. At the same time, the combination design of the limiting ring 3 and the hollow groove 30 can effectively reduce the noise generated by turbulence.

[0030] Specifically, the blade 2 extends in an arc shape and has a predetermined width at its end, thereby achieving a larger contact area with the limiting ring 3.

[0031] In this embodiment of the invention, the upper wall of the blade 2, which is in the same direction as the shaft cover 10, is the air inlet surface, and the lower wall is the air guide surface.

[0032] The limiting ring 3 has an air inlet end position.

[0033] Specifically, a connecting piece 32 is provided between the air inlet surface and the limiting ring 3. The setting of the connecting piece 32 can not only avoid the wind noise caused by deformation due to excessive connection area between adjacent blades 2, but also increase the contact area between blade 2 and limiting ring 3 to achieve a predetermined balance.

[0034] In this embodiment of the utility model, the rear end of the connecting piece 32 is a vertical surface, and the vertical surface and the end of the air guide surface form the hollow groove 30. The shape and size design of the hollow groove 30 are related to the direction of the fluid and its guiding effect. The hollow groove 30 can also avoid the generation of a flow gap between the frame and the limiting ring 3, thereby preventing overfrequency noise.

[0035] Specifically, the blade 2 is provided with a balance wing 23 extending out of the limiting ring 3. The balance wing 23 can ensure the balance of the blade 2 rotation.

[0036] In this embodiment of the utility model, the limiting ring 3 is located at the end of the air inlet surface, and the height of the limiting ring 3 is less than 3mm. Setting it on the upper wall of the blade 2 makes it easier to injection mold, while ensuring the predetermined support and reducing the deformation of the blade 2. At the same time, it can increase the wind pressure while increasing the rotation speed.

[0037] Specifically, from a top-down perspective, the inner included angle 101 of the blade 2 is greater than the outer included angle 102 of the blade 2. In the actual design, because a limiting ring 3 is designed, a larger gap can be provided between the ends of the blades 2, thereby making the fluid distribution of the entire fan more uniform and reducing turbulence noise or overclocking noise problems.

[0038] In this embodiment of the invention, the outer periphery of the shaft cover 10 is provided with a chamfer, preferably an arc-shaped chamfer, thereby improving the guiding effect of the fluid.

[0039] Specifically, the bearing 1, blade 2, limiting ring 3, and connecting piece 32 are integrally injection molded or 3D printed, thereby ensuring the integrity of the structure.

[0040] In actual testing, such as Figures 1-4 This is the first embodiment. Figure 5 This is the second embodiment.

[0041] In the figure, when used with the same frame, the maximum air volume of the first embodiment is 8.78% better than that of the second embodiment.

[0042] The maximum wind pressure in the first embodiment is 2.55% better than that in the second embodiment;

[0043] Dynamic pressure (Pv) refers to the pressure generated by a fluid (such as air) in motion, primarily caused by the fluid's velocity. Inside a duct, dynamic pressure is generated when air or other fluids flow at a certain velocity. Dynamic pressure is usually expressed in units such as kgf / m² (kilogram-force per square meter), mmAq (millimeters of water column), and Pa (Pascal), which can be directly measured or calculated. The magnitude of dynamic pressure depends on the fluid velocity; the faster the velocity, the greater the dynamic pressure.

[0044] P represents wind pressure, and Q represents air volume.

[0045] Comparison table of air volume and air pressure tests between the first and second embodiments:

[0046]

[0047] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A computer fan with blades connected at the ends, characterized in that, include: A bearing seat, wherein the lower wall of the bearing seat is provided with a rotating shaft, and the upper wall of the bearing seat is a bearing cover; The blades extend outward from the outer peripheral wall of the bearing seat and are spaced apart along the axis; A limiting ring is provided between the blades, and the limiting ring is provided with a hollow groove between adjacent blades.

2. The computer fan with blades connected at the ends as described in claim 1, characterized in that: The blade extends in an arc shape and has a predetermined width at its end.

3. The computer fan with blades connected at the ends as described in claim 1, characterized in that: The upper wall of the blades, which faces the same direction as the shaft cover, is the air inlet surface, and the lower wall is the air guide surface. The limiting ring has an air inlet end position.

4. The computer fan with blades connected at the ends as described in claim 3, characterized in that: A connecting piece is provided between the air inlet surface and the limiting ring.

5. The computer fan with blades connected at the ends as described in claim 4, characterized in that: The rear end of the connecting piece is a vertical surface, and the vertical surface and the end of the air guide surface form the hollow groove.

6. The computer fan with blades connected at the ends as described in claim 1, characterized in that: The blade is equipped with a balance wing that extends out of the limiting ring.

7. The computer fan with blades connected at the ends as described in claim 1, characterized in that: The limiting ring is located at the end of the air inlet surface, and the height of the limiting ring is less than 3mm.

8. The computer fan with blades connected at the ends as described in claim 1, characterized in that: From a top-down perspective, the included angle of the inner side of the blade is greater than the included angle of the outer end of the blade.

9. The computer fan with blades connected at the ends as described in claim 1, characterized in that: The outer periphery of the shaft cover is chamfered.

10. The computer fan with blades connected at the ends as described in claim 4, characterized in that: The bearing, blade, limiting ring, and connecting piece are integrally injection molded or 3D printed.

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