TWM567817U - Noise reduction fan structure - Google Patents

Abstract

The present invention relates to a noise reduction type fan structure. The noise reduction type fan structure comprises a hub and a plurality of blades, and the plurality of blades are integrally formed outwardly from the outer periphery of the hub, and each blade has a top surface and a top end. The rim has a plurality of U-shaped depressions continuously and juxtaposed inwardly from the top edge, and each of the top surfaces forms a fork-shaped convex portion with respect to the plurality of U-shaped depressions. Thereby, the streamline shape of the fork-shaped convex portion generates a flow velocity at different positions, thereby reducing the noise generated when the fan structure is operated.

Description

Noise reduction fan structure

The present invention relates to a fan structure, and in particular to a noise reduction type fan structure.

The electronic components inside the electronic device, such as the motherboard, the central processing unit, and the integrated circuit, all generate high heat during operation. When the electronic components accumulate heat and cannot dissipate heat, the electronic components may be damaged or short-circuited. Therefore, in order to maintain the efficiency and stability of the operation of the electronic component, it is one of the methods for ensuring that the electronic component can operate normally by providing a heat sink such as a cooling fan for the electronic component.

However, the conventional cooling fan mainly includes a frame and a fan body mounted in the fan frame. The fan body has a hub and a plurality of blades disposed on the hub and surrounded by a circle, but each blade surface If it is too continuous and flat, it will easily form a continuous surface during operation, causing the flow velocity to be concentrated, resulting in high noise when the fan body is running. Therefore, how to reduce the noise generated when the fan body is running is the focus of the cooling fan manufacturers.

In view of this, the creator has made great efforts to solve the above problems by focusing on the above-mentioned prior art, and has devoted himself to the application of the theory, that is, the goal of the creator's improvement.

The present invention provides a noise-reducing fan structure that utilizes the streamlined shape of the fork-shaped projections to generate flow rates at different positions, thereby reducing noise generated during operation of the fan structure.

In the present embodiment, the present invention provides a noise reduction type fan structure, including: a hub; and a plurality of blades extending integrally from the outer periphery of the hub, each of the blades having a top surface and A top edge, each of the top surfaces is provided with a continuous and juxtaposed plurality of U-shaped recesses inwardly from the top edge, each of the top surfaces forming a fork-shaped protrusion with respect to the plurality of U-shaped recesses.

Based on the above, the streamline shape and curvature of the fork-shaped projections on each blade produce flow rates at different positions, thereby reducing the noise generated during operation of the fan structure.

Based on the above, each of the fork-shaped protrusions has a plurality of arrow-shaped protrusions and straight ribs, so that the blades have different streamline shapes and curvatures, so that the fan blades can generate flow velocity at different positions during operation. Reduce the noise of the fan structure running noise.

The detailed description and technical content of the present invention will be described below in conjunction with the drawings, but the drawings are for illustrative purposes only and are not intended to limit the present invention.

Referring to FIG. 1 to FIG. 3 , the present invention provides a noise reduction type fan structure. The noise reduction type fan structure 10 mainly includes a hub 1 and a plurality of blades 2 .

As shown in FIG. 1 to FIG. 3, a plurality of blades 2 are integrally formed outwardly from the outer periphery of the hub 11, and each blade 2 has a top surface 21, a top edge 22 and a bottom edge 23, each top surface 21 is provided with a plurality of U-shaped recesses 24 continuously and juxtaposed from the top edge 22, and each of the top surfaces 21 is formed with a fork-shaped projection 25 with respect to the plurality of U-shaped recesses 24.

As will be described in detail below, each of the fork-shaped convex portions 25 has a plurality of arrow-shaped projections 251 extending toward the inside of each U-shaped recess 24 adjacent to the end of the top end edge 22, and each of the fork-shaped convex portions 25 has two U-shaped characters disposed adjacent to each other. One or a plurality of intermediate rod segments 252 between the recesses 24, each of the intermediate rod segments 252 extending from the end of the arrow-shaped projection 251 to the bottom end edge 23 with a straight rib 253. Wherein, the ribs 253 are gradually increased in width from the top to the bottom, so that each of the ribs 253 is a triangular ridge.

In addition, the number of the U-shaped recesses 24 on each of the blades 2 of the present embodiment is two, but is not limited thereto, and the number of U-shaped recesses 24 on each of the blades 2 is two, each The number of the intermediate rod segments 252 on the blade 2 is one, so that the shape of each of the fork-shaped projections 25 is in the shape of a fork.

As shown in FIG. 1 to FIG. 3, the state of use of the noise-reducing fan structure 10 of the present invention utilizes the streamline shape and curvature of the fork-shaped convex portion 25 on each blade 2 to generate flow velocity at different positions. The noise generated when the fan structure 10 is operated is reduced.

In addition, each of the fork-shaped convex portions 25 extends with a plurality of arrow-shaped protrusions 251 and straight ribs 253, so that the blade 2 has different streamline shapes and curvatures, so that the blades 2 can generate different positions during operation. The flow rate is used to reduce the running noise of the fan structure 10.

In summary, the noise-reducing fan structure of the present invention can achieve the intended use purpose, and solve the lack of conventional knowledge, and has industrial utilization, novelty and progress, fully conforms to the patent application requirements, and converts to the patent law. To file an application, please check and grant the patent in this case to protect the rights of the creator.

10‧‧‧ Noise reduction fan structure

1‧‧·wheels

2‧‧‧ fan leaves

21‧‧‧ top surface

22‧‧‧ top edge

23‧‧‧Bottom edge

24‧‧‧U-shaped depression

25‧‧‧fork convex

251‧‧‧ arrow-shaped bumps

252‧‧‧intermediate section

253‧‧‧straight ribs

Figure 1 is a perspective view of the noise reduction fan structure of the present invention.

Figure 2 is a top plan view of the noise reduction fan structure of the present invention.

Fig. 3 is a side view showing the structure of the noise reduction fan of the present invention.

Claims (5)

A noise reduction type fan structure, comprising: a hub; and a plurality of blades extending integrally from the outer periphery of the hub, each of the blades having a top surface and a top edge, each of the top surfaces The top edge is opened inwardly with a plurality of U-shaped depressions arranged in a continuous and juxtaposed arrangement, and each of the top surfaces forms a fork-shaped convex portion with respect to the plurality of U-shaped depressions. The noise reduction fan structure of claim 1, wherein each of the fork-shaped protrusions has a plurality of arrow-shaped protrusions extending toward an inner end of each of the U-shaped recesses adjacent to an end of the tip end. The noise reduction fan structure of claim 2, wherein each of the blades further has a bottom end edge, and each of the fork-shaped protrusions has at least one disposed between two adjacent U-shaped recesses An intermediate rod segment extending from the end of the arrow-shaped lug to the bottom end edge with a straight rib. The noise reduction fan structure of claim 3, wherein each of the straight ribs gradually increases in width from the top toward the bottom such that each of the straight ribs is a triangular ridge. The noise reduction type fan structure according to claim 4, wherein the number of U-shaped depressions on each of the blades is two, so that the shape of each of the fork-shaped protrusions is in a fork shape.