TWM491095U - Fan structure - Google Patents

Description

Fan structure

A fan structure, especially a fan structure that reduces overall thickness and improves performance and reduces noise generation.

In recent years, with the development of the electronics industry, the performance of electronic components has rapidly increased, the processing speed has become faster and faster, and the operation speed of the internal chipset has been continuously increased, and the number of wafers has also increased, while the aforementioned wafers are in operation. The amount of heat emitted is also increased accordingly. If these heat sources are not emitted immediately, the performance of the electronic components will be greatly affected, the processing speed of the electronic components will be reduced, and as the heat accumulates, the electronic components may be burnt, so the heat dissipation has been It is one of the important issues of electronic components, and the use of a cooling fan as a heat sink is a common method.

In the limited system space, the cooling fan used is a small centrifugal fan for heat dissipation. Please refer to FIGS. 1A, 1B and 1C. The centrifugal fan 1 mainly includes a frame 11 and a cover 12 . a fan hub 13 and a plurality of blades 14 disposed outside the fan hub 13, wherein the casing 11 has a air inlet 111, and the cover 12 also has an air inlet 121, and the cover The body 12 is disposed above the frame 11 and is formed with the frame 11 to form an air outlet 112 on the side, and the fan hub 13 and the blade 14 are oppositely disposed on the frame 11 and the cover. Between the bodies 12, the fan blades 14 pass through the blades 14 when they are in operation The rotation drives the surrounding air to flow, and the axial airflow entering from the upper and lower air inlets 111, 121 is diverted from the radial airflow along the fan hub 13 and then discharged from the air outlet 112.

However, in the design of the centrifugal fan 1 product, the air inlet space of the fan hub 13 needs to be reserved, that is, the fan hub 13 and the fan blade 14 are reserved between the cover body 12 and the bottom of the frame body 11. Into the wind space, but the main consideration when using the centrifugal fan is that it requires a thin design, but its reserved air inlet space will increase its overall thickness; or it may need to consider its thin design to reduce the upper and lower air inlet space. The operation performance of the centrifugal fan 1 is affected. Moreover, when the fan hub 13 and the blade 14 are in operation, the cover 12 and the air inlets 111 and 121 of the frame 11 also increase the running noise of the centrifugal fan.

Therefore, the conventional disadvantages have the following disadvantages: 1. The design of the thin design is difficult; 2. The operating performance of the fan is affected; 3. The running noise is easily increased.

Therefore, how to solve the above problems and problems in the past, that is, the creators of the case and the relevant manufacturers engaged in this industry are eager to study the direction of improvement.

Accordingly, in order to solve the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide a fan structure which can reduce the overall thickness and the lifting performance.

Another object of the present invention is to provide a fan structure that reduces noise generation. In order to achieve the above object, the present invention provides a fan structure, which includes an upper cover and a fan frame and a certain sub-assembly and a hub, and the upper cover correspondingly covers the fan frame and collectively defines an accommodation space, and The fan frame has a shaft barrel, and the fan frame has a first side And a second side and a third side and a fourth side, the first side has an air inlet and the third side has an air outlet, and the second side has a first side wall and the fourth side Having a second side wall, the first side wall has a protrusion extending to the air inlet, and the second side wall has a first portion, the stator assembly is disposed in the accommodating space and sleeved An outer portion of the shaft, the hub is disposed in the accommodating space and sleeved outside the stator assembly, and the hub extends outwardly with a plurality of portions, the connecting portion is provided with a plurality of blades at the other end of the hub, and The length of the exhibition portion is greater than the length of the fan blade, whereby the fan structure is formed by the side air inlet and the side air outlet, so that the fan structure can reduce the air inlet space to effectively reduce the overall thickness while maintaining Its thin design and improved operational performance, and at the same time can effectively solve the noise problem caused by the shadowless effect of the upper and lower air inlets, which can effectively reduce the noise generation problem.

2‧‧‧Fan structure

3‧‧‧Upper cover

4‧‧‧Fan frame

41‧‧‧ accommodating space

411‧‧‧ shaft tube

42‧‧‧ first side

43‧‧‧ second side

44‧‧‧ third side

45‧‧‧ fourth side

46‧‧‧Air inlet

47‧‧‧air outlet

48‧‧‧First side wall

481‧‧‧ protrusion

482‧‧‧First expansion space

483‧‧‧Extension

49‧‧‧Second side wall

491‧‧ ‧ Department

492‧‧‧Second gradually expanding space

493‧‧‧Second extension

5‧‧‧stator assembly

6‧‧·wheels

61‧‧‧ Exhibition Department

L2‧‧‧ Exhibition length

62‧‧‧ fan leaves

L1‧‧‧ blade length

63‧‧‧Connecting Department

D1‧‧‧First distance

D2‧‧‧Second distance

1A is a schematic exploded perspective view of the prior art; FIG. 1B is a schematic view of a conventional combination; FIG. 1C is a schematic cross-sectional view of a conventional combination; FIG. 2 is a perspective exploded view of the first preferred embodiment of the present invention; 3 is a partial exploded view of the first preferred embodiment of the present invention; FIG. 4 is a plan view of the first preferred embodiment of the present invention; FIG. 5 is a schematic diagram of the first preferred embodiment of the present invention. Figure 6 is an exploded perspective view of a second preferred embodiment of the present invention; Figure 7A is an exploded perspective view of a third preferred embodiment of the present invention; and Figure 7B is an exploded view of the third preferred embodiment of the present invention schematic diagram.

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings.

Please refer to FIG. 2, FIG. 3 and FIG. 4, which are a perspective exploded view, a partially exploded schematic view and a plan view of a first preferred embodiment of the present fan structure. As shown in the figure, the fan structure of the present invention is shown. 2 series includes an upper cover 3 and a fan frame 4 and a certain sub-assembly 5 and a hub 6;

The upper cover 3 covers the fan frame 4 and defines an accommodating space 41. The fan frame 4 has a shaft 411 at a central position, and the fan frame 4 has a first side 42 and a a second side 43 and a third side 44 and a fourth side 45, wherein the first side 42 has an air inlet 46 and the third side 44 has an air outlet 47, and the second side 43 has a first The side wall 48 and the fourth side 45 have a second side wall 49, and the first side wall 48 has a protrusion 481 extending from the first side wall 48 toward the air inlet 46, and the protrusion 481 is The air outlet 47 has a first extension 483, and the second sidewall 49 has a first portion 491. The second portion 493 is defined between the shutter 491 and the air inlet 46.

The stator assembly 5 is disposed in the accommodating space 41 and is disposed outside the shaft 411, and the hub 6 is also disposed in the accommodating space 41 and sleeved outside the stator assembly 5 And the hub 6 extends to the outside with a plurality of extensions 61. The extension 61 is provided with a plurality of blades 62 at the other end of the hub 6, and each of the blades 62 has a blade length L1 between the front end and the rear end. At the position of the blade 62, there is a connecting portion 63 connecting all the blades 62, and the connecting portion 63 causes the blades 62 to be annularly arranged to surround each other, and the connecting portion 63 simultaneously supplies the protruding portion 61 to the hub. 6 is connected at the other end, so that the extension portion 61 connects all the through the connecting portion 63 The fan blade 62, in the embodiment, the extension portion 61 extends from the hub 6 to the connecting portion 63, and the extension portion 61 forms a length L2 between the hub 6 and the connecting portion 63, and the extension portion thereof The degree L2 is greater than the length L1 of the blade formed between the front end and the rear end of the blade 62, and the first diverging space 482 and the first distance D1 are between the fan blade 62 and the first extending portion 483. And a second diverging space 492 and a second distance D2 between the fan blade 62 and the second extending portion 493, wherein the first distance D1 and the second distance D2 are formed in a center of the hub 6 The horizontal tangential position is, and the first distance D1 is greater than twice and at least twice the second distance D2.

Please refer to FIG. 5, which is a schematic diagram of the first preferred embodiment of the present invention. As shown in the figure, when the fan structure 2 of the present invention is in operation, the hub 6 and the blade 62 are in the The air in the accommodating space 41 rotates, and the airflow outside the fan structure 2 enters the accommodating space 41 from the air inlet 46 of the first side 42 and is sent out by the air outlet 47 of the third side 44 to reach the fan. The structure of the leaf structure 2 is influenced by the side air inlet and the side air outlet, so that the fan structure 2 can reduce the air inlet space to effectively reduce the overall thickness and at the same time maintain its thin design and improve the operational performance, and at the same time be effective. Solving the noise problem caused by the non-shadowing effect of the upper and lower air inlets can effectively reduce the problem of noise generation, and the airflow through the air inlet 46 and the blade 62 will produce the effect of the first pressurization, and the airflow passes through the fan blade. When the position of the portion 61 between the 62 and the hub 6 is raised and the air outlet 47 is pulled out, a second pressure is generated, and the second portion 49 of the fourth side 45 is formed by the second portion 49 to effectively stop the airflow from flowing back into the air inlet 47. At the tuyere 46, therefore, the fan structure 2 can Hold its slim design and has the effect of lifting operational performance.

Please refer to FIG. 6 , which is an exploded view of the second preferred embodiment of the present invention. The structure and connection relationship of the preferred embodiment and its function are substantially the same as those of the first preferred embodiment described above. It will not be repeated; the preferred embodiment is mainly the first preferred embodiment. In a specific implementation, the extension portion 61 of the embodiment may be modified into an annular disk-shaped extension design, and the extension portion extends outward along the outer circumferential side of the hub 6 to form the annular disk-shaped exhibition portion 61. The other end of the portion 61 extends over the connecting portion 63.

7A and 7B are diagrams showing the first and second embodiments of the third preferred embodiment of the present invention; the structure and the connection relationship of the preferred embodiment and the effect thereof are substantially the same as the first preferred embodiment. The same is not repeated here; as shown in FIG. 7A, the preferred embodiment mainly designs the plurality of blades 62 of the first preferred embodiment to be modified outside the plurality of blades 62 on the connecting portion 63. The ribs are arranged in a staggered manner, that is, the fan blades 62 are partially looped on both end faces of the connecting portion 63, and the non-circularly disposed fan blades 62 disposed at the end faces of the connecting portion 63 are alternately arranged, as shown in FIG. 7B. As shown in the preferred embodiment, the plurality of blades 62 of the first preferred embodiment are modified to be arranged in a staggered arrangement of the plurality of blades 62 on the connecting portion 63, that is, a plurality of blades. The 62 ring is disposed on an upper end surface of the connecting portion 63, and the other portion of the plurality of blades 62 is annularly disposed on the lower end surface of the connecting portion 63, and is disposed in a staggered arrangement with the aforementioned plurality of blades 62.

Therefore, the design that the partial plurality of blades 62 and the other partial plurality of blades 62 are respectively disposed on the upper end surface of the connecting portion 63 and the lower end surface thereof and are staggered with each other can effectively achieve the effect of reducing fan noise. In summary, the fan structure of this creation can achieve its efficacy and purpose when it is used. Therefore, this creation is a practical and excellent creation, which is in line with the application requirements for the creation of patents. The Commission will grant this case as soon as possible to protect the hard work of the creators. If there is any doubt in the arbitral tribunal, please do not hesitate to give instructions to the creators, and the creators will try their best to cooperate with them.

2‧‧‧Fan structure

3‧‧‧Upper cover

4‧‧‧Fan frame

41‧‧‧ accommodating space

411‧‧‧ shaft tube

42‧‧‧ first side

43‧‧‧ second side

44‧‧‧ third side

45‧‧‧ fourth side

46‧‧‧Air inlet

47‧‧‧air outlet

48‧‧‧First side wall

481‧‧‧ protrusion

483‧‧‧Extension

49‧‧‧Second side wall

491‧‧ ‧ Department

5‧‧‧stator assembly

6‧‧·wheels

61‧‧‧ Exhibition Department

62‧‧‧ fan leaves

63‧‧‧Connecting Department

Claims (6)

A fan structure includes: an upper cover; a fan frame, and a corresponding cover of the upper cover to define an accommodation space and has a shaft tube, wherein the fan frame has a first side and a second side and a a third side and a fourth side, the first side has an air inlet and the third side has an air outlet, and the second side has a first side wall and the fourth side has a second side wall, the second side The first side wall has a protrusion extending to the air inlet, and the second side wall has a first portion; a certain sub-assembly disposed in the accommodating space and sleeved outside the shaft; and a hub And disposed in the accommodating space and sleeved outside the stator group, and the hub extends outwardly with a plurality of protrusions, and the protrusion is provided with a plurality of blades at the other end of the hub. The fan structure of claim 1, wherein the protrusion and the air outlet have a first extension, and the first extension and the blade have a first diverging space. With a first distance. The fan structure of claim 2, wherein a second extension portion is defined between the gear portion and the air inlet, and a second diverging space is formed between the second extension portion and the blade With a second distance. The fan structure of claim 3, wherein the first distance and the second distance are formed at a horizontal tangent position with the hub center, and the first distance is greater than the first distance. And at least twice. The fan structure of claim 1, wherein the length of the extension is greater than the length of the blade. The fan structure of claim 3, wherein each of the blades has a connecting portion, and each of the blades is surrounded by the connecting portion, so that the fan blade is annular, and the connecting The joint is further connected to the other end of the joint relative to the hub.