Fan device

Abstract

The utility model discloses a fan device which comprises a fan frame and a fan blade structure. The fan frame is provided with a bottom part and at least one side part. At least one side part is connected to the bottom part and forms an accommodating space in a surrounding manner. At least one side part is provided with a hollow structure. The hollow structure is communicated with the accommodating space. The fan blade structure is rotatably arranged at the bottom and located in the containing space. And at least part of the fan blade structure extends to the hollow structure. Therefore, the size of the fan blade structure and the area of the fan blade structure can be increased, and the air volume generated when the fan device operates is further increased. Therefore, the heat dissipation efficiency of the fan device can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fan device, in particular to a fan device with a fan frame having a hollow structure. BACKGROUND

[0002] With the rapid development of technology, the operation performance of the processor is also greatly increased, and a large amount of heat is also generated. In order to ensure that the processor is not damaged due to high heat, a fan needs to be installed on the electronic product to dissipate the excessive heat of the processor, so that the processor can operate within a certain operating temperature range.

[0003] In recent years, the heat dissipation requirement of the fan is increasing, that is, the demand for the air volume generated by the fan is increasing. The fan frame of the fan is usually composed of plastic injection molding. However, the above process limits the size of the fan blade and cannot increase the air volume, so that the heat dissipation efficiency of the fan is insufficient, and the increasing heat dissipation requirement cannot be met. Therefore, how to increase the air volume generated during the operation of the fan to improve the heat dissipation efficiency of the fan is one of the problems to be solved by the researchers. SUMMARY

[0004] The utility model provides a fan device to increase the air volume generated during operation to improve the heat dissipation efficiency.

[0005] An embodiment of the utility model discloses a fan device comprising a fan frame and a fan blade structure. The fan frame has a bottom and at least one side. The at least one side is connected to the bottom and surrounds a containing space. The at least one side has a hollow structure. The hollow structure is in communication with the containing space. The fan blade structure is rotatably arranged on the bottom and located in the containing space. The fan blade structure at least partially extends to the hollow structure.

[0006] The fan device described above, wherein the fan frame comprises a base and a cover, the base has the bottom and the at least one side, the cover is arranged on the at least one side and has an opening, the opening is in communication with the containing space, so that the airflow generated by the fan blade structure flows out of the containing space through the opening.

[0007] The fan device described above, wherein the fan blade structure comprises a hub portion and a blade portion, the hub portion is rotatably arranged on the bottom, and the blade portion is connected to the hub portion.

[0008] The fan device described above, wherein the fan blade structure further comprises an outer ring portion, the outer ring portion is connected to the side of the blade portion away from the hub portion, and the outer ring portion is at least partially located in the hollow structure.

[0009] The fan device described above, wherein the outer ring portion is at least partially between the bottom and the cover.

[0010] The fan device, wherein the hub portion, the blade portion, and the outer ring portion are integrally formed.

[0011] The fan device, wherein the hollow structure is connected to a side of the at least one side portion close to the cover, and the cover covers a side of the hollow structure.

[0012] The fan device, wherein an outer diameter of the blade structure is less than or equal to a shortest side length of the frame, and greater than or equal to 95% of the shortest side length of the frame.

[0013] The fan device, wherein the hollow structure is rectangular.

[0014] The fan device, wherein the number of the at least one side portion is four, the four side portions collectively surround the accommodation space, and the blade structure at least partially extends to the four hollow structures.

[0015] According to the fan device of the above embodiments, since the side portion of the frame has the hollow structure, the blade structure can at least partially extend to the hollow structure, i.e., the outer diameter of the blade structure can exceed the inner diameter of the frame through the hollow structure, so compared with the fan device without the hollow structure, the size of the blade structure of the present embodiment can be increased by, for example, 4%, and the area of the blade structure can be increased by, for example, 8%, so that the air volume generated when the fan device operates can be increased by, for example, 20% to 40%. In this way, the heat dissipation efficiency of the fan device can be improved.

[0016] The above description of the present application and the following description of the embodiments are used to demonstrate and explain the principles of the present application, and provide further explanation of the scope of the patent application of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of a fan device according to an embodiment of the present application.

[0018] Figure 2 is Figure 1 an exploded view of the fan device of

[0019] Figure 3 is Figure 1 a top view of the fan device of

[0020] Figure 4 is Figure 1 a sectional view of the fan device of

[0021] In the drawings:

[0022] 10: fan device

[0023] 20: frame

[0024] 21: Base

[0025] 211: Bottom

[0026] 212: Side

[0027] 2121: Hollow out structure

[0028] 22: Cover

[0029] 221: Opening

[0030] 30: Fan blade structure

[0031] 31: Wheel hub

[0032] 32: Blade section

[0033] 33: Outer Ring Road

[0034] L: Shortest side length

[0035] R1: outer diameter

[0036] R2, R3: Inner diameter

[0037] S: Storage space Detailed Implementation

[0038] Please see Figures 1 to 4 . Figure 1 This is a perspective view of the fan device according to an embodiment of the present invention. Figure 2 for Figure 1 An exploded view of the fan assembly. Figure 3 for Figure 1 A top view of the fan unit, omitting the cover. Figure 4 for Figure 1 A cross-sectional view of the fan assembly.

[0039] The fan device 10 of this embodiment is, for example, an axial flow fan, and is used in fields such as computers, servers, or home appliances. The fan device 10 includes a fan frame 20 and a fan blade structure 30. The fan frame 20 is manufactured by injection molding, for example, and includes a base 21 and a cover 22. The base 21 has a bottom 211 and four sides 212. The four sides 212 are connected to the bottom 211 and together surround an accommodating space S.

[0040] Each side portion 212 has a hollow structure 2121. The four hollow structures 2121 are, for example, rectangular, and are in communication with the accommodation space S. The cover 22 is covered on the four side portions 212. For example, the cover 22 is locked on the four side portions 212 by screws (not shown), but is not limited thereto. The four hollow structures 2121 are connected to the side of the four side portions 212 close to the cover 22, and the cover 22 covers one side of the four hollow structures 2121. The cover 22 has an opening 221. The opening 221 is in communication with the accommodation space S.

[0041] The fan blade structure 30 is rotatably arranged on the bottom portion 211 and located in the accommodation space S, so that the generated air flow flows out of the accommodation space S through the opening 221, and the fan blade structure 30 at least partially extends to the four hollow structures 2121, that is, the outer diameter R1 of the fan blade structure 30 exceeds the range formed by the inner diameter R2 of the fan frame 20 through the four hollow structures 2121.

[0042] In detail, the fan blade structure 30 includes, for example, a hub portion 31, a blade portion 32, and an outer ring portion 33 which are integrally formed. The hub portion 31 is rotatably arranged on the bottom portion 211 of the base 21. The blade portion 32 is connected to the hub portion 31. For example, the flow of the air flow can be adjusted by adjusting the shape of the blade portion 32. The outer ring portion 33 is connected to the side of the blade portion 32 away from the hub portion 31. The outer ring portion 33 is at least partially located in the hollow structure 2121, and the outer ring portion 33 is at least partially between the bottom portion 211 and the cover 22.

[0043] In the embodiment, the outer diameter R1 of the fan blade structure 30 is, for example, less than or equal to the shortest side length L of the fan frame 20, and is, for example, greater than or equal to 95% of the shortest side length L of the fan frame 20. For example, the fan frame 20 is square, that is, the shortest side length L of the fan frame 20 is, for example, equal to the length and the width of the fan frame 20. In addition, the inner diameter R3 of the fan blade structure 30 is, for example, 118.8 millimeters.

[0044] In the embodiment, since the side portion 212 of the fan frame 20 has the hollow structure 2121, the fan blade structure 30 at least partially extends to the hollow structure 2121, that is, the outer diameter R1 of the fan blade structure 30 can exceed the inner diameter R2 of the fan frame 20 through the hollow structure 2121, so that compared with the fan device 10 without the hollow structure 2121, the size of the fan blade structure 30 of the embodiment can be increased by, for example, 4%, and the area of the fan blade structure 30 can be increased by, for example, 8%, so that the air volume generated when the fan device 10 operates can be increased by, for example, 20% to 40%. In this way, the heat dissipation efficiency of the fan device 10 can be improved.

[0045] For example, in the case of low rotation speed of the fan blade structure 30 (e.g. emitting 23 decibels (dB) of noise), the air volume generated by the fan blade structure 30 can be increased from 41.62 cubic feet per minute (CFM) to 59.25 cubic feet per minute (i.e. about 40% increase in air volume, for example). In addition, in the case of high rotation speed of the fan blade structure 30 (e.g. emitting 41 decibels (dB) of noise), the air volume generated by the fan blade structure 30 can be increased from 89.03 cubic feet per minute to 113.98 cubic feet per minute (i.e. about 28% increase in air volume, for example).

[0046] In addition, by including the outer ring portion 33 in the fan blade structure 30, the air volume and air pressure generated when the fan blade structure 30 is in operation can be maintained. Furthermore, by including the cover 22 in the fan frame 20, the air pressure generated when the fan blade structure 30 is in operation can be further maintained, and the noise emitted when the fan blade structure 30 is in operation can be avoided from being increased.

[0047] In the present embodiment, the fan device 10 can further include a driving member (not shown). The driving member is disposed at the bottom portion 211 of the fan frame 20 and is connected to the hub portion 31. The driving member is used to drive the hub portion 31 to rotate relative to the fan frame 20. In detail, the driving member includes a stator (not shown) and a rotor (not shown). The stator and the rotor are, for example, matching magnets or coils. The stator is fixedly disposed at the bottom portion 211 of the fan frame 20. The rotor is rotatably disposed at the hub portion 31 and can rotate relative to the stator by electromagnetic effect to drive the hub portion 31 to rotate relative to the fan frame 20.

[0048] In the present embodiment, the number of the side portions 212 and the hollow structures 2121 is four, but is not limited thereto. In other embodiments, the number of the side portions and the hollow structures can also be less than three or more than five.

[0049] In the present embodiment, the four hollow structures 2121 and the four side portions 212 are connected to one side of the cover 22, but are not limited thereto. In other embodiments, the four hollow structures can also be separated from the four side portions at the side of the cover.

[0050] In the present embodiment, the hollow structures 2121 are rectangular, but are not limited thereto. In other embodiments, the hollow structures can also be in other shapes.

[0051] In the present embodiment, the fan frame 20 is square-shaped, such that the shortest side length L of the fan frame 20 is equal to the length and the width of the fan frame 20, for example, but is not limited thereto. In other embodiments, the fan frame can also be in other shapes such that the shortest side length of the fan frame is equal to the length or the width of the fan frame, for example.

[0052] In the present embodiment, the fan blade structure 30 includes the outer ring portion 33, but is not limited thereto. In other embodiments, the fan blade structure can also not include the outer ring portion.

[0053] According to the fan device of the above embodiments, since the side portion of the fan frame has the hollow structure, the fan blade structure can extend at least partially to the hollow structure, i.e. the outer diameter of the fan blade structure can exceed the inner diameter of the fan frame through the hollow structure. Therefore, compared with the fan device without the hollow structure, the size of the fan blade structure of the present embodiment can be increased by 4%, and the area of the fan blade structure can be increased by 8%, so that the air volume generated by the fan device during operation can be increased by 20% to 40%. In this way, the heat dissipation efficiency of the fan device can be improved.

[0054] In addition, by including the outer ring portion in the fan blade structure, the air pressure and the air volume generated by the fan blade structure during operation can be maintained. Furthermore, by including the cover in the fan frame, the air pressure generated by the fan blade structure during operation can be further maintained, and the noise generated by the fan blade structure during operation can be avoided.

[0055] Although the present application has been disclosed with the above-mentioned embodiments, it is not intended to limit the present application. Any person skilled in the art can make some changes and modifications without departing from the spirit and scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the protection scope of the claims attached to the present application.

Claims

1. A fan device, characterized in that, Include: A frame has a bottom and at least one side, the at least one side being connected to the bottom and surrounding an accommodating space, the at least one side having a hollow structure and the hollow structure being connected to the accommodating space; as well as A fan-blade structure is rotatably disposed at the bottom and located in the receiving space, and the fan-blade structure extends at least partially into the hollow structure.

2. The fan device as claimed in claim 1, characterized in that, The fan frame includes a base and a cover. The base has a bottom and at least one side. The cover is disposed on the at least one side and has an opening that communicates with the receiving space so that the airflow generated by the fan blade structure flows out of the receiving space through the opening.

3. The fan device as described in claim 2, characterized in that, The fan blade structure includes a hub and a blade. The hub is rotatably disposed at the bottom, and the blade is connected to the hub.

4. The fan device as described in claim 3, characterized in that, The fan blade structure further includes an outer ring portion connected to the side of the blade portion away from the hub portion, and the outer ring portion is at least partially located in the hollow structure.

5. The fan device as described in claim 4, characterized in that, The outer ring is at least partially located between the bottom and the cover.

6. The fan device as claimed in claim 4, characterized in that, The hub, the blade, and the outer ring are integrally formed.

7. The fan device as claimed in claim 2, characterized in that, The hollow structure is connected to the side of at least one side of the cover that is close to the cover, and the cover covers one side of the hollow structure.

8. The fan device as claimed in claim 1, characterized in that, The outer diameter of the fan blade structure is less than or equal to the shortest side length of the fan frame, and greater than or equal to 95% of the shortest side length of the fan frame.

9. The fan device as claimed in claim 1, characterized in that, The hollowed-out structure is rectangular.

10. The fan device as claimed in claim 1, characterized in that, The number of at least one side portion is four, the four sides together surround the accommodating space, and the fan blade structure extends at least partially into the four hollow structures.

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