CN210033948U

CN210033948U - Fan module and fan structure thereof

Info

Publication number: CN210033948U
Application number: CN201920357129.6U
Authority: CN
Inventors: 许文昉; 李泳毅; 许嘉恒; 魏振隆
Original assignee: DONGGUAN POWERLOGIC ELECTRONIC Co Ltd
Current assignee: DONGGUAN POWERLOGIC ELECTRONIC Co Ltd
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2020-02-07
Anticipated expiration: 2029-03-20

Abstract

The utility model discloses a fan module and fan structure thereof, this fan structure include a wheel hub and plural flabellum, and the shaping is outwards extended to the integrative outside from wheel hub's outer peripheral edge to plural flabellum, and the top surface of each flabellum has discontinuous plural horizontal curved surface and an outside limit each other, and the projection has plural lug on the horizontal curved surface nearest to outside limit. Therefore, the discontinuous plurality of transverse curved surfaces can generate flow velocities at different positions, and further reduce narrow-frequency noise generated when the fan structure operates.

Description

Fan module and fan structure thereof

Technical Field

The present invention relates to a fan structure, and more particularly, to a fan module and a fan structure thereof.

Background

Electronic components inside the electronic device, such as a motherboard, a central processing unit, an integrated circuit, and the like, generate high heat during operation, and when the electronic components accumulate heat and cannot dissipate heat, the electronic components are damaged or short-circuited. Therefore, in order to maintain the performance and stability of the electronic component during operation, a heat dissipation device such as a heat dissipation fan is provided for the electronic component, which is one of the methods for ensuring the normal operation of the electronic component.

However, the conventional heat dissipation fan mainly includes a fan frame and a fan body installed in the fan frame, the fan body has a hub and a plurality of blades arranged on the hub and enclosing each other to form a circle, but the surface of each blade forms a continuous surface, which causes the concentration of the flow velocity position, resulting in the generation of high narrow-frequency noise when the fan body is operated. Therefore, how to reduce the narrow-band noise generated when the fan body operates is a key point that manufacturers of cooling fans want to pursue.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is according to above-mentioned prior art not enough, provide a fan module and fan structure thereof, its narrow noise that produces when can reducing fan structure operation.

The technical scheme of the utility model as follows:

a fan structure comprising:

a hub; and

the top surface of each fan blade is provided with a plurality of discontinuous transverse curved surfaces and an outer side edge, and a plurality of convex blocks are extended on the transverse curved surface which is most adjacent to the outer side edge.

Further, each bump has a sharp-angled end pointing to the outer side edge.

Furthermore, each lug is a triangular claw block.

Furthermore, the curvature of two adjacent transverse curved surfaces is different from each other, and a transverse boundary line is formed between two adjacent transverse curved surfaces (321).

A fan module, comprising:

a frame having an annular peripheral wall;

a lamp strip arranged on the annular peripheral wall; and

a fan structure mounted to the frame and disposed within the annular perimeter wall, the fan structure comprising:

a hub; and

Further, each bump has a sharp-angled end pointing to the outer side edge.

Furthermore, each lug is a triangular claw block.

Furthermore, the curvatures of two adjacent transverse curved surfaces are different, and a transverse boundary line is formed between two adjacent transverse curved surfaces.

Furthermore, the lamp strip comprises an annular flexible circuit board and a plurality of LEDs arranged on the annular flexible circuit board.

Furthermore, an annular groove is arranged on the outer side of the annular peripheral wall, a plurality of permeable openings are arranged on the bottom wall of the annular groove, the annular flexible circuit board is accommodated in the annular groove, and the LEDs are arranged corresponding to the permeable openings.

Compared with the prior art, the utility model discloses following beneficial effect has: (1) the top surface of each fan blade is provided with a plurality of discontinuous transverse curved surfaces which can generate flow velocity at different positions, thereby reducing narrow-frequency noise generated when the fan structure operates; (2) the transverse curved surface nearest to the outer side edge is provided with a plurality of convex blocks in a protruding mode, each convex block is provided with a sharp-angle end pointing to the outer side edge, the convex blocks can generate flow velocities at different positions, the sharp-angle ends can guide air to flow to the outer side edge in a dispersed mode, the flow field direction and the flow velocity of the fan structure in operation are changed, and narrow-frequency noise generated when the fan structure is in operation can be greatly reduced.

Drawings

Fig. 1 is an exploded perspective view of the present embodiment.

Fig. 2 is a perspective assembly view of the present embodiment.

Fig. 3 is a schematic top view of the present embodiment.

Fig. 4 is a schematic cross-sectional view of the present embodiment.

Fig. 5 is another cross-sectional view of the present embodiment.

Reference numerals

10-fan module, 1-frame, 11-annular peripheral wall, 12-annular groove, 13-vent, 2-light bar, 21-annular flexible circuit board, 22-LED, 3-fan structure, 31-hub, 32-fan blade, 321-transverse curved surface, 322-outer side, 323-convex block, 324-sharp corner end, 325-triangular claw block and L-transverse boundary line.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 5, an embodiment of the present invention provides a fan module and a fan structure thereof, wherein the fan module includes a frame 1, a light bar 2 and a fan structure 3; the fan structure 3 mainly includes a hub 31 and a plurality of blades 32.

As shown in fig. 1 to 5, the frame 1 has an annular peripheral wall 11, an annular groove 12 is formed outside the annular peripheral wall 11, and a plurality of vents 13 are formed in the bottom wall of the annular groove 12.

As shown in fig. 1 to 2 and 4 to 5, the light bar 2 is disposed on the annular peripheral wall 11, the light bar 2 includes an annular flexible circuit board 21 and a plurality of LEDs 22 mounted on the annular flexible circuit board 21, the annular flexible circuit board 21 is accommodated in the annular groove 12, and each LED22 is disposed corresponding to each transparent opening 13.

As shown in fig. 1 to 5, the fan structure 3 is mounted on the frame 1 and disposed inside the annular peripheral wall 11, the fan structure 3 includes a hub 31 and a plurality of blades 32, and the LEDs 22 irradiate light onto the blades 32 through the transparent openings 13, so that the blades 32 have a lighting effect.

In detail, a plurality of blades 32 are integrally formed to extend outward from the outer periphery of the hub 31, the top surface of each blade 32 has a plurality of discontinuous transverse curved surfaces 321 and an outer side 322, the curvature (denoted by Kappa: κ) is a measure of the geometric unevenness, and the curvatures of two adjacent transverse curved surfaces 321 are different from each other, so that a transverse boundary L is formed between the two adjacent transverse curved surfaces 321.

The lateral curved surface 321 nearest to the outer side 322 has a plurality of protruding blocks 323 protruding therefrom, each protruding block 323 has a pointed end 324 pointing to the outer side 322, each protruding block 323 of the embodiment is a triangular claw block 325, but not limited thereto, and each protruding block 323 may be a diamond-shaped or pentagonal polygonal block.

In the usage of the fan module 10 and the fan structure 3 of the present embodiment, the top surface of each of the fan blades 2 has a plurality of discontinuous transverse curved surfaces 22, and the plurality of discontinuous transverse curved surfaces 22 generate flow velocities at different positions, so as to reduce the narrow-band noise generated during the operation of the fan structure 10.

In addition, a plurality of convex blocks 323 protrude from the transverse curved surface 321 closest to the outer side 322, each convex block 323 has a sharp end 324 pointing to the outer side 322, the convex blocks 323 can also generate flow velocities at different positions, and the sharp ends 324 can guide the air to flow toward the outer side 322 to be dispersed, so as to change the flow field direction and the flow velocity of the fan structure 3, and further greatly reduce the narrow-band noise generated during the operation of the fan structure 10.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. A fan structure, comprising:

a hub (31); and

a plurality of blades (32) integrally extended and formed from the outer periphery of the hub (31), the top surface of each blade (32) has a plurality of discontinuous transverse curved surfaces (321) and an outer side (322), and a plurality of bumps (323) protrude from the transverse curved surface (321) nearest to the outer side (322).

2. A fan structure as claimed in claim 1, wherein: each of the bumps (323) has a pointed end (324) directed toward the outer side (322).

3. A fan structure as claimed in claim 2, wherein: each of the protrusions (323) is a triangular claw (325).

4. A fan structure as claimed in claim 2 or 3, wherein: the adjacent two transverse curved surfaces (321) have different curvatures, and a transverse boundary line (L) is formed between the adjacent two transverse curved surfaces (321).

5. A fan module, comprising:

a frame (1) having an annular peripheral wall (11);

a lamp strip (2) arranged on the annular peripheral wall (11); and

a fan structure (3) mounted to the frame (1) and disposed inside the annular peripheral wall (11), the fan structure (3) comprising:

a hub (31); and

6. The fan module of claim 5, wherein: each of the bumps (323) has a pointed end (324) directed toward the outer side (322).

7. The fan module of claim 6, wherein: each of the protrusions (323) is a triangular claw (325).

8. A fan module according to claim 6 or 7, wherein: the adjacent two transverse curved surfaces (321) have different curvatures, and a transverse boundary line (L) is formed between the adjacent two transverse curved surfaces (321).

9. A fan module according to claim 6 or 7, wherein: the lamp strip (2) comprises an annular flexible circuit board (21) and a plurality of LEDs (22) mounted on the annular flexible circuit board (21).

10. The fan module of claim 9, wherein: an annular groove (12) is arranged on the outer side of the annular peripheral wall (11), a plurality of permeable openings (13) are arranged on the bottom wall of the annular groove (12), the annular flexible circuit board (21) is contained in the annular groove (12), and the LEDs (22) are arranged corresponding to the permeable openings (13).