Fan device

Abstract

This invention discloses a fan device comprising a fan frame and a fan blade structure. The fan frame has a bottom and at least one side portion. The at least one side portion is connected to the bottom and surrounds an accommodating space. The at least one side portion has a hollow structure. The hollow structure communicates with the accommodating space. The fan blade structure is rotatably disposed on the bottom and located in the accommodating space. The fan blade structure extends at least partially into the hollow structure, wherein the outer diameter of the fan blade structure exceeds the range formed by the inner diameter of the fan frame through the hollow structure. In this way, the size and area of ​​the fan blade structure can be increased, thereby increasing the airflow generated when the fan device is operating. This improves the heat dissipation efficiency of the fan device.

Description

Technical Field

[0001] This invention relates to a fan device, and more particularly to a fan device with a hollowed-out fan frame. Background Technology

[0002] With the rapid development of technology, the computing power of processors has increased significantly, but it also generates a lot of heat. To ensure that the processor is not damaged by high heat, fans need to be installed in electronic products to dissipate the excessive heat from the processor, so that the processor can operate within a certain operating temperature range.

[0003] In recent years, the demand for higher wattage cooling capacity in fans has been increasing, meaning the required airflow from fans is also rising. Currently, fan frames are typically made of injection-molded plastic. However, this process limits the size of the fan blades, hindering airflow and resulting in insufficient cooling efficiency, thus failing to meet the ever-increasing cooling demands. Therefore, increasing the airflow generated by the fan during operation to improve its cooling efficiency is one of the problems that researchers need to solve. Summary of the Invention

[0004] The present invention provides a fan device to increase the air volume generated during operation in order to improve heat dissipation efficiency.

[0005] An embodiment of this invention discloses a fan device comprising a fan frame and a fan blade structure. The fan frame has a bottom and at least one side portion. The at least one side portion is connected to the bottom and surrounds an accommodating space. The at least one side portion has a perforated structure. The perforated structure communicates with the accommodating space. The fan blade structure is rotatably disposed on the bottom and located in the accommodating space. The fan blade structure extends at least partially into the perforated structure, wherein the outer diameter of the fan blade structure extends beyond the range defined by the inner diameter of the fan frame through the perforated structure.

[0006] In the aforementioned fan device, the fan frame includes a base and a cover. The base has a bottom and at least one side portion. The cover is disposed on the at least one side portion and has an opening that communicates with the accommodating space, so that the airflow generated by the fan blade structure flows out of the accommodating space through the opening.

[0007] In the aforementioned fan device, the fan blade structure includes a hub and a blade, the hub being rotatably disposed at the bottom, and the blade being connected to the hub.

[0008] In the aforementioned fan device, 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.

[0009] In the aforementioned fan device, the outer ring portion is at least partially located between the bottom and the cover.

[0010] In the aforementioned fan device, the hub, the blades, and the outer ring are integrally formed.

[0011] In the aforementioned fan device, the perforated structure is connected to the side of at least one side of the cover near the cover, and the cover covers one side of the perforated structure.

[0012] In the aforementioned fan device, 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.

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

[0014] In the aforementioned fan device, the number of at least one side portion is four, the four side portions together surround the accommodating space, and the fan blade structure extends at least partially into the four hollow structures.

[0015] According to the fan device of the above embodiment, since the side of the fan frame has a hollow structure, the fan blade structure can at least partially extend into the hollow structure. That is, the outer diameter of the fan blade structure can exceed the inner diameter of the fan frame through the hollow structure. Therefore, compared with a fan device without a hollow structure, the size of the fan blade structure in this embodiment can be increased by, for example, 4%, and the area of ​​the fan blade structure can be increased by, for example, 8%, so that the air volume generated when the fan device is running 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 content of this invention and the following description of the embodiments are used to demonstrate and explain the principles of this invention, and to provide a further explanation of the scope of the patent application of this invention. Attached Figure Description

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

[0018] Figure 2 for Figure 1 An exploded view of the fan assembly.

[0019] Figure 3 for Figure 1 A top view of the fan unit, omitting the cover.

[0020] Figure 4 for Figure 1 A cross-sectional view of the fan assembly.

[0021] In the attached figures, the following labels are used:

[0022] 10: Fan assembly

[0023] 20: Sector 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 perforated structure 2121. The four perforated structures 2121 are, for example, rectangular and communicate with the accommodating space S. A cover 22 is fitted over the four sides 212. For example, the cover 22 is secured to the four sides 212 by screws (not shown), but this is not a limitation. The four perforated structures 2121 are connected to the side of the four sides 212 closest to the cover 22, and the cover 22 covers one side of the four perforated structures 2121. The cover 22 has an opening 221. The opening 221 communicates with the accommodating space S.

[0041] The fan blade structure 30 is rotatably disposed at the bottom 211 and located in the accommodating space S, and the generated airflow flows out of the accommodating space S through the opening 221. The fan blade structure 30 extends at least partially to the four-hole structure 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-hole structure 2121.

[0042] In detail, the fan blade structure 30 includes, for example, an integrally formed hub portion 31, a blade portion 32, and an outer ring portion 33. The hub portion 31 is rotatably disposed on the bottom 211 of the base 21. The blade portion 32 is connected to the hub portion 31. The airflow can be adjusted, for example, 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 at least partially located between the bottom 211 and the cover 22.

[0043] In this 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, for example, greater than or equal to 95% of the shortest side length L of the fan frame 20. The fan frame 20 is, for example, square, meaning the shortest side length L of the fan frame 20 is, for example, equal to the length and width of the fan frame 20. Furthermore, the inner diameter R3 of the fan blade structure 30 is, for example, 118.8 mm.

[0044] In this embodiment, since the side portion 212 of the fan frame 20 has a hollow structure 2121, the fan blade structure 30 can at least partially extend into the hollow structure 2121. That is, the outer diameter R1 of the fan blade structure 30 can extend beyond the inner diameter R2 of the fan frame 20 through the hollow structure 2121. Therefore, compared with the fan device 10 without the hollow structure 2121, the size of the fan blade structure 30 in this 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 is running 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, when the fan blade structure 30 operates at a low speed (e.g., emitting a noise level of 23 dB), the airflow generated by the fan blade structure 30 can be increased, for example, from 41.62 cubic feet per minute (CFM) to 59.25 cubic feet per minute (i.e., an increase of approximately 40%). Furthermore, when the fan blade structure 30 operates at a high speed (e.g., emitting a noise level of 41 dB), the airflow generated by the fan blade structure 30 can be increased, for example, from 89.03 cubic feet per minute to 113.98 cubic feet per minute (i.e., an increase of approximately 28%).

[0046] Furthermore, the outer ring 33 of the fan blade structure 30 maintains the airflow and air pressure generated during operation. Moreover, the cover 22 of the fan frame 20 further maintains the air pressure generated during operation and prevents an increase in noise generated during operation.

[0047] In this embodiment, the fan assembly 10 may further include a drive member (not shown). The drive member is disposed at the bottom 211 of the fan frame 20 and connected to the hub portion 31. The drive member is used to drive the hub portion 31 to rotate relative to the fan frame 20. Specifically, the drive member includes a stator (not shown) and a rotor (not indicated). The stator and rotor are, for example, mating magnets or coils. The stator is fixedly disposed at the bottom 211 of the fan frame 20. The rotor is rotatably disposed at the hub portion 31 and can rotate relative to the stator through electromagnetic effects to drive the hub portion 31 to rotate relative to the fan frame 20.

[0048] In this embodiment, the number of side portions 212 and hollow structures 2121 is four, but it is not limited to this. In other embodiments, the number of side portions and hollow structures may be three or less or five or more.

[0049] In this embodiment, the four hollow structures 2121 are connected to the four sides 212 near the cover 22, but this is not a limitation. In other embodiments, the four hollow structures may also be separated from the four sides near the cover.

[0050] In this embodiment, the cutout structure 2121 is rectangular, but it is not limited to this. In other embodiments, the cutout structure may also be other shapes.

[0051] In this embodiment, the sector frame 20 is square, such that the shortest side length L of the sector frame 20 is, for example, equal to the length and width of the sector frame 20, but is not limited thereto. In other embodiments, the sector frame may also be of other shapes, such that the shortest side length of the sector frame is, for example, equal to the length or width of the sector frame.

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

[0053] According to the fan device of the above embodiment, since the side of the fan frame has a hollow structure, the fan blade structure can at least partially extend into the hollow structure. That is, the outer diameter of the fan blade structure can exceed the inner diameter of the fan frame through the hollow structure. Therefore, compared with a fan device without a hollow structure, the size of the fan blade structure in this embodiment can be increased by, for example, 4%, and the area of ​​the fan blade structure can be increased by, for example, 8%, so that the air volume generated when the fan device is running can be increased by, for example, 20% to 40%. In this way, the heat dissipation efficiency of the fan device can be improved.

[0054] Furthermore, the outer ring of the fan blade structure helps maintain the air pressure and airflow generated during operation. Moreover, the cover within the fan frame further helps maintain the air pressure generated during operation and prevents an increase in noise generated during fan blade operation.

[0055] Although the present invention has been disclosed above with reference to the foregoing embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be determined by the scope of protection of the appended claims.

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, wherein the outer diameter of the fan blade structure extends beyond the range formed by the inner diameter of the fan frame through 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 perforated 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 perforated 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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