Fan device and guiding component

Abstract

A fan device includes a fan frame, a fan blade, a driving component and a guiding component. The fan blade includes a hub portion and a plurality of first blade portions. The hub portion is rotatably disposed on the fan frame, and has an opening. The first blade portions are connected to the hub portion. The driving component is disposed on the fan frame, and is connected to the hub portion. The driving component is configured to drive the hub portion to rotate relative to the fan frame. The guiding component is fixed to the hub portion, and includes a cover portion and at least one guiding portion. The cover portion has at least one hole. The at least one hole is in fluid communication with the opening. The driving component is located on a side of the cover portion farthest away from the opening. The at least one guiding portion is connected to the cover portion, and is located at the at least one hole. The at least one guiding portion is configured to guide a heat dissipation airflow to flow from the opening and the at least one hole to the driving component so ad to dissipate heat from the driving component.

Description

[Technical Field]

[0001] The present invention relates to a fan device and a flow guide, particularly a fan device and a flow guide provided with a flow guide to guide the cooling airflow to cool the drive component. [Previous Technology]

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

[0003] However, when the fan runs continuously, the fan motor generates a lot of heat and overheats, which reduces its operating efficiency and thus shortens its lifespan. Therefore, how to avoid motor overheating to maintain motor operating efficiency is one of the problems that researchers should solve. [Summary of the Invention]

[0004] The present invention provides a fan device and a flow guide to avoid overheating of the drive component in order to maintain the operating performance of the drive component.

[0005] One embodiment of the present invention discloses a fan device comprising a fan frame, a fan blade, a drive member, and a guide member. The fan blade comprises a hub portion and a plurality of first blade portions. The hub portion is rotatably disposed on the fan frame and has a notch. The first blade portions are connected to the hub portion. The drive member is disposed on the fan frame and connected to the hub portion. The drive member is used to drive the hub portion to rotate relative to the fan frame. The guide member is fixed to the hub portion and comprises a cover portion and at least one guide portion. The cover portion has at least one opening. The at least one opening communicates with the notch. The drive member is located on the side of the cover portion away from the notch. The at least one guide portion is connected to the cover portion and located at the at least one opening. The at least one guide portion is used to guide a cooling airflow from the notch and the at least one opening to the drive member to dissipate heat from the drive member.

[0006] Another embodiment of the present invention discloses a flow guide for being disposed in a hub portion having a notch in a fan assembly, and includes a cover portion and at least one flow guide portion. The cover portion has at least one opening. The at least one opening is for communicating with the notch. The at least one flow guide portion is connected to the cover portion and located at the at least one opening. The at least one flow guide portion is for guiding a cooling airflow from the notch and the at least one opening to the drive component of the fan assembly, so as to dissipate heat from the drive component of the fan assembly.

[0007] According to the fan device and air guide of the above embodiment, since the fan device includes an air guide, and the hub has a notch and the air guide includes a guiding portion, when the fan device is operating, the cooling airflow generated by the rotation of the fan blades can flow to the drive component through the notch in the hub and through the guidance of the air guide to dissipate heat from the drive component. In this way, the drive component will not overheat due to prolonged operation, thereby avoiding a reduction in the operating performance of the drive component and maintaining its service life.

[0008] The above description of the content of the present invention and the following description of the embodiments are used to demonstrate and explain the principles of the present invention, and to provide a further explanation of the scope of the patent application of the present invention.

Implementation Method

[0009] Please refer to Figures 1 to 3. Figure 1 is a perspective view of the fan device according to an embodiment of the present invention. Figure 2 is an exploded view of the fan device of Figure 1. Figure 3 is another exploded view of the fan device of Figure 1.

[0010] The fan device 10 of this embodiment includes a fan frame 11, a fan blade 12, a drive member 13, and a guide member 14. The fan blade 12 is, for example, counterclockwise rotating and includes a hub portion 121, a plurality of first blade portions 122, and a plurality of second blade portions 123. The hub portion 121 is rotatably disposed on the fan frame 11 and has a notch 1211. The first blade portions 122 and the second blade portions 123 are respectively connected to opposite sides of the hub portion 121, and the inclination directions of the first blade portions 122 and the second blade portions 123 are, for example, different, to generate airflow in different directions. That is, the first blade portions 122 and the second blade portions 123 are, for example, air outlet blades and air inlet blades, respectively. The second blade portions 123 are located at the notch 1211 and are used to generate a cooling airflow.

[0011] A drive member 13 is disposed on the sector frame 11 and connected to the hub portion 121. The drive member 13 is used to drive the hub portion 121 to rotate relative to the sector frame 11. In detail, the drive member 13 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 on the sector frame 11. The rotor is rotatably disposed on the hub portion 121 and can rotate relative to the stator through electromagnetic effect to drive the hub portion 121 to rotate relative to the sector frame 11.

[0012] Please refer to Figures 4 through 6 together. Figure 4 is a cross-sectional view of the fan assembly in Figure 1. Figure 5 is another cross-sectional view of the fan assembly in Figure 1. Figure 6 is a top view of the air guide of the fan assembly in Figure 1.

[0013] The flow guide 14 is, for example, a metal shell. For instance, the flow guide 14 is an iron shell. The flow guide 14 includes a cover 141, a side ring 142, and a plurality of flow guides 143. The cover 141 has a plurality of openings 1411. These openings 1411 are arranged, for example, at intervals along a circumferential line and communicate with notches 1211. The cover 141 may have a distance from the hub 121, but is not limited thereto. In other embodiments, the cover 141 may also abut against the hub 121.

[0014] The side ring portion 142 is connected to the cover portion 141. The hub portion 121 has a plurality of fixing ribs 1212 and a plurality of fixing protrusions 1213. The fixing protrusions 1213 protrude from the fixing ribs 1212 respectively. The fixing ribs 1212 abut tightly against the side ring portion 142, and the fixing protrusions 1213 abut against the side of the side ring portion 142 away from the cover portion 141, so that the guide member 14 is fixed to the hub portion 121.

[0015] The side ring portion 142 and the cover portion 141 together surround a heat dissipation space S. These openings 1411 are connected to the heat dissipation space S, and the drive member 13 is located in the heat dissipation space S. These guide portions 143 are connected to the cover portion 141 and are respectively located in these openings 1411. These guide portions 143 are used to guide the heat dissipation airflow from the notch 1211 and these openings 1411 into the heat dissipation space S and towards the drive member 13 to dissipate heat from the drive member 13. There is a gap GA between the hub portion 121 and the fan frame 11 so that the heat dissipation airflow can flow out of the heat dissipation space S from the gap GA, and the heat dissipation airflow is guided outward through these first blade portions 122.

[0016] In this embodiment, the included angle R between each flow guide 143 and the cover 141 is, for example, between 0 degrees and 90 degrees. Furthermore, the cover 141 has a plurality of reference lines L. These reference lines L extend from the center of the cover 141 to the edge of the cover 141. The flow guides 143 and the openings 1411 are respectively located at 1 / 3 to 2 / 3 of these reference lines L.

[0017] In this embodiment, since the fan device 10 includes a guide member 14, and the hub portion 121 has a notch 1211 and the guide member 14 includes a guide portion 143, when the fan device 10 is operating, the cooling airflow generated by the rotation of the fan blades 12 can flow to the drive member 13 through the notch 1211 of the hub portion 121 and through the guide portion 143 to dissipate heat from the drive member 13. In this way, the drive member 13 will not overheat due to long-term operation, thereby avoiding a reduction in the operating performance of the drive member 13 and maintaining the service life of the drive member 13.

[0018] In this embodiment, the first blade portions 122 and the second blade portions 123 are respectively air outlet blades and air inlet blades, but this is not a limitation. In other embodiments, the air inlet and outlet forms of the first blade portions and the second blade portions can also be interchanged, that is, the first blade portions and the second blade portions can also be respectively air inlet blades and air outlet blades.

[0019] In this embodiment, the fan blade 12 is provided with these second blade portions 123 to generate heat dissipation airflow, but is not limited thereto. In other embodiments, the fan blade may not be provided with second blade portions, but the first blade portions can be used to draw air into the heat dissipation space to attract external airflow from the notches and openings into the heat dissipation space.

[0020] In this embodiment, there are multiple fixing ribs 1212 and fixing protrusions 1213, and the guide member 14 is fixed to the hub portion 121 through these fixing ribs 1212 and fixing protrusions 1213, but this is not a limitation. In other embodiments, the number of fixing ribs may be only a single one, or the hub portion may not be provided with fixing ribs and fixing protrusions, and the guide member may be fixed to the hub portion by other means.

[0021] In this embodiment, the flow guide 14 includes a cover portion 141, a side ring portion 142, and a flow guide portion 143, and the drive member 13 is located in the heat dissipation space S surrounded by the cover portion 141 and the side ring portion 142, but is not limited thereto. In other embodiments, the flow guide may only include a cover portion and a flow guide portion without a side ring portion, and the drive member is located on the side of the cover portion away from the notch.

[0022] In this embodiment, there are multiple openings 1411, flow guides 143, and baselines L, but this is not a limitation. In other embodiments, there may be only one opening, flow guide, and baseline.

[0023] Please refer to Figures 7 and 8. Figure 7 is a three-dimensional schematic diagram of the airflow for cooling in the fan assembly of Figure 1. Figure 8 is a cross-sectional schematic diagram of the airflow for cooling in the fan assembly of Figure 1.

[0024] In this embodiment, when the fan device 10 is operating, the second blades 123 generate a cooling airflow, which flows along direction A through the notch 1211. Then, the cooling airflow flows along direction B from the notch 1211 to the openings 1411, and is guided by the guides 143 to flow into the cooling space S along direction C. Next, the cooling airflow flows along direction D within the cooling space S towards the drive member 13 to dissipate heat from the drive member 13. Then, the cooling airflow flows out of the cooling space S from the gap GA along direction E. Next, the first blades 122 guide the cooling airflow outwards along direction F. In this way, the cooling process for the drive member 13 is completed.

[0025] According to the fan device and air guide of the above embodiment, since the fan device includes an air guide, and the hub has a notch and the air guide includes a guiding portion, when the fan device is operating, the cooling airflow generated by the rotation of the fan blades can flow to the drive component through the notch in the hub and through the guidance of the air guide to dissipate heat from the drive component. In this way, the drive component will not overheat due to prolonged operation, thereby avoiding a reduction in the operating performance of the drive component and maintaining its service life.

[0026] 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 the patent application attached to this specification. [Simplified Explanation of the Diagram]

[0027] Figure 1 is a perspective view of the fan device according to an embodiment of the present invention. Figure 2 is an exploded view of the fan device of Figure 1. Figure 3 is another exploded view of the fan device of Figure 1. Figure 4 is a cross-sectional view of the fan device of Figure 1. Figure 5 is another cross-sectional view of the fan device of Figure 1. Figure 6 is a top view of the air guide of the fan device of Figure 1. Figure 7 is a perspective view of the flow of cooling air in the fan device of Figure 1. Figure 8 is a cross-sectional view of the flow of cooling air in the fan device of Figure 1.

Claims

1. A fan device comprising: A fan frame; a fan blade comprising a hub, a plurality of first blade portions, and a plurality of second blade portions, the hub being rotatably disposed on the fan frame and having a notch, the first blade portions and the second blade portions being respectively connected to opposite sides of the hub, the second blade portions being located at the notch and used to generate a cooling airflow, and the first blade portions and the second blade portions having opposite inclination directions; a drive member disposed on the fan frame and connected to the hub, the drive member being used to drive the hub to rotate relative to the fan frame; and a guide member fixed to the hub, the guide member comprising: a cover portion having at least one opening communicating with the notch, and the drive member being located on the side of the cover portion away from the notch; and at least one guide portion connected to the cover portion and located at the at least one opening, the at least one guide portion being used to guide the cooling airflow from the notch and the at least one opening to the drive member, so as to dissipate heat from the drive member.

2. The fan device as claimed in claim 1, wherein the airflow guide further includes a side ring portion connected to the cover portion and together with the cover portion forming a heat dissipation space, the at least one opening communicating with the heat dissipation space, and the drive member located in the heat dissipation space.

3. The fan device as claimed in claim 2, wherein there is a gap between the hub and the fan frame, through which the cooling airflow flows out of the cooling space and is guided outward through the first blades.

4. The fan assembly as claimed in claim 2, wherein the hub portion further has at least one fixing rib and at least one fixing protrusion, the at least one fixing protrusion protruding from the at least one fixing rib, the at least one fixing rib abutting tightly against the side ring portion, and the at least one fixing protrusion abutting against the side ring portion away from the cover portion, so as to fix the air guide to the hub portion.

5. The fan device as claimed in claim 1, wherein the angle between the at least one airflow guide and the cover is between 0 degrees and 90 degrees.

6. The fan device as claimed in claim 1, wherein the cover has at least one reference line extending from the center of the cover to the edge of the cover, and the at least one airflow portion and the at least one opening are located at 1 / 3 to 2 / 3 of the at least one reference line.

7. The fan device as claimed in claim 1, wherein the number of the at least one opening is multiple, and the openings are arranged at intervals along a circumferential line.

8. A flow guide for being disposed in a hub portion of a fan assembly having a notch, the flow guide comprising: a cover portion having at least one opening communicating with the notch; a side ring portion connected to one side of the cover portion and together with the cover portion surrounding a heat dissipation space, the at least one opening communicating with the heat dissipation space, and the heat dissipation space for accommodating a drive member of the fan assembly; and at least one flow guide portion connected to the side of the cover portion near the side ring portion and located at the at least one opening, the at least one flow guide portion for guiding a cooling airflow from the notch and the at least one opening to the drive member of the fan assembly for cooling the drive member of the fan assembly.

9. The flow guide as described in claim 8, wherein the angle between the at least one flow guide portion and the cover portion is between 0 degrees and 90 degrees.

10. The flow guide as claimed in claim 8, wherein the cover has at least one reference line extending from the center of the cover to the edge of the cover, and the at least one flow guide and the at least one opening are located at 1 / 3 to 2 / 3 of the at least one reference line.

11. The flow guide as claimed in claim 8, wherein the number of the at least one opening is multiple, and the openings are arranged at intervals along a circumferential line.

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