A fan having a wing-shaped fan blade

Abstract

The utility model discloses a fan with wing shape fan blade, fan, has wing shape fan blade including a hub and the periphery of hub forms a plurality of blades, the upper and lower end surface of every blade all are set up with a plurality of grooves. The width of blade gradually increases from the air inlet to the air outlet, thereby increases the fan's sweep area. The technical effect and advantage of the utility model: the groove can disperse airflow to different directions, reduces the vibration of air, and the air flow becomes soft, and the sound is naturally small, plays the sound attenuation effect. Effectively reduce the uncomfortable sound of "very noisy", through the experiment, the convex peak in FFT on the spectrum diagram is obviously reduced, and the outstanding rate P / R is obviously reduced.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan processing technology, and more specifically to a fan with wing-shaped blades. Background Technology

[0002] Modern laptops are high-performance and high-power, requiring fans to provide significant cooling. This necessitates fan designs with more blades to improve performance. However, high-density fan blades can lead to increased noise, resulting in an unpleasant and "noisy" sound experience for users.

[0003] Therefore, there is an urgent need for a centrifugal fan that can maintain the original heat dissipation performance of the fan while improving the user's experience of a low-noise fan. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fan with wing-shaped blades and its processing technology.

[0005] The technical solution of this utility model is as follows:

[0006] The first aspect of this utility model provides a fan blade with a wing shape, including a hub and a plurality of blades formed on the outer periphery of the hub; each blade has a plurality of grooves on its upper and lower end faces.

[0007] The width of the blades gradually increases from the air inlet to the air outlet, thereby increasing the sweeping area of ​​the fan.

[0008] The grooves are distributed in a circular pattern.

[0009] The specifications of the wing-shaped fan blades are as follows: fan blade angle is 80-120 degrees, number of blades is 30-150, and blade spacing is 0.3-3mm.

[0010] The fan blade angle is 100 degrees, the number of fan blades is 101, the minimum spacing between the blades is 0.53 mm, and the maximum spacing between the blades is 1.66 mm.

[0011] The outer end of the blade is connected by a circular reinforcing plate.

[0012] The second aspect of this utility model provides a fan with wing-shaped blades, wherein the fan blades are wing-shaped.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. The grooves can disperse the airflow in different directions, reduce air vibration, make the airflow softer, and naturally reduce the sound, thus playing a role in noise reduction.

[0015] 2. Experiments revealed that the FFT spectrum showed a significant reduction in prominent peaks and a noticeable decrease in the peak-to-ratio (P / R). This effectively reduced the unpleasant, "noisy" sound. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0018] Figure 3 This is a structural schematic diagram from another perspective of the present invention;

[0019] Figure 4 This is a plan view of the present utility model;

[0020] Figure 5 To improve the peak difference plot before and after;

[0021] Figure 6 To improve the convexity ratio P / R diagram before and after. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example

[0023] The first aspect of this utility model provides a fan blade with a wing shape, such as... Figures 1 to 3 As shown, it includes a hub 1 and several blades 2 formed on the outer periphery of the hub; each blade has multiple grooves 3 on its upper and lower end faces.

[0024] Preferably, the width of the blades gradually increases from the air inlet a to the air outlet b, thereby increasing the sweeping area of ​​the fan.

[0025] Preferred, such as Figure 4 As shown by the dashed circle, the grooves are distributed in a circular pattern, with 8 rings of the circularly distributed grooves, each ring being equidistant in the diametrical direction.

[0026] Preferably, the specifications of the wing-shaped fan blades are: fan blade angle (angle between hub and blade) of 80-120 degrees, number of blades of 30-150, and blade spacing of 0.3-3mm.

[0027] Preferably, the outer end of the blade 2 is connected by a circular reinforcing plate 4.

[0028] Preferably, the hub 1 is provided with multiple soil filling grooves 5 for counterweighting the fan blades and for dynamic balancing. Example

[0029] The second aspect of this utility model provides a fan with wing-shaped blades. The fan blades are wing-shaped. A connecting seat 6 is provided at the center of the hub. After the connecting seat is connected to the power shaft, it is placed inside the housing to form the fan. Example

[0030] The third aspect of this utility model provides a method for processing fan blades with a wing shape, comprising the following steps:

[0031] S1. Select injection molding materials;

[0032] S2. The fan blades are manufactured by injection molding using an injection molding machine;

[0033] S3. Machining grooves on the blades.

[0034] Preferably, the groove and the fan blade are integrally injection molded.

[0035] Preferably, the groove is formed on the blade using CNC machining.

[0036] Preferably, the type of plastic particles in the injection molding material is LCP. Example

[0037] like Figure 4 As shown, the fan blade angle is 100 degrees, the number of fan blades is 101, the minimum blade spacing is 0.53 mm, and the maximum blade spacing is 1.66 mm. There are 8 circumferentially distributed grooves, each equidistant from the other in the diametrical direction.

[0038] like Figure 5 indivual Figure 6 As shown, when designing the fan blades, turbulence grooves are added to the upper and lower end faces of the blades. Through experiments, it was found that the bulging peaks in the FFT spectrum were significantly reduced, and the protrusion ratio P / R was significantly reduced.

[0039] The diagram explains: FFT (Fourier Transform); the peak in FFT; P / R (Prominence Ratio).

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fan blade with a wing-shaped design, characterized in that: It includes a hub and several blades formed on the outer periphery of the hub; each blade has multiple grooves on its upper and lower end faces; the width of the blades gradually increases from the air inlet to the air outlet, thereby increasing the sweeping area of ​​the fan.

2. A fan blade with a wing shape according to claim 1, characterized in that: The grooves are distributed in a circular pattern.

3. A fan blade with a wing shape according to claim 1, characterized in that: The specifications of the wing-shaped fan blades are as follows: fan blade angle is 80-120 degrees, number of blades is 30-150, and blade spacing is 0.3-3mm.

4. A fan blade with a wing shape according to claim 3, characterized in that: The fan blade angle is 100 degrees, the number of fan blades is 101, the minimum spacing between the blades is 0.53 mm, and the maximum spacing between the blades is 1.66 mm.

5. A fan blade with a wing shape according to claim 1, characterized in that: The outer end of the blade is connected by a circular reinforcing plate.

6. A fan with wing-shaped blades, characterized in that: The fan blades are those with a wing shape as described in any one of claims 1-5.

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