Fan assembly and airflow guide

Abstract

This utility model discloses a fan device and a flow guide. The fan device includes a fan frame, a fan blade, a drive member, and a flow guide. The fan blade includes a hub and a plurality of first blade portions. The hub is rotatably disposed on the fan frame and has a notch. The first blade portions are connected to the hub. The drive member is disposed on the fan frame and connected to the hub. The drive member is used to drive the hub to rotate relative to the fan frame. The flow guide is fixed to the hub and includes a cover and at least one flow guide portion. The cover 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 away from the notch. The at least one flow guide portion is connected to the cover and located at the at least one opening. The at least one flow 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.

Description

Technical Field

[0001] This utility model relates to a fan device and a flow guide, and more particularly to a fan device and a flow guide with a flow guide to guide the cooling airflow to cool the drive component. 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] However, when a 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 prevent the motor from overheating and maintain its operating efficiency is one of the problems that researchers need to solve. Utility Model Content

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

[0005] An 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 includes 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 includes 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 for cooling the drive member.

[0006] In the aforementioned fan device, the fan blade further includes a plurality of second blade portions, which are respectively connected to the first blade portions on opposite sides of the hub portion, and the second blade portions are located at the notch and are used to generate the cooling airflow so that the cooling airflow flows from the notch to the openings.

[0007] In the aforementioned fan device, there is a gap between the hub and the fan frame, allowing the cooling airflow to flow out through the gap into a cooling space, and the cooling airflow is guided outward by the first blades.

[0008] In the aforementioned fan device, the airflow guide further includes a cover and a side ring, the at least one opening is located in the cover, the side ring is connected to the cover and together with the cover surrounds the heat dissipation space, the at least one opening is connected to the heat dissipation space, and the drive unit is located in the heat dissipation space.

[0009] In the aforementioned fan device, 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 tightly abutting against the side ring portion, and the at least one fixing protrusion abutting against the side of the side ring portion away from the cover portion, so as to fix the air guide to the hub portion.

[0010] In the aforementioned fan device, the angle between the at least one airflow guide and the cover is between 0 degrees and 90 degrees.

[0011] In the aforementioned fan device, the cover has at least one baseline extending from the center of the cover to the edge of the cover, and the at least one airflow guide and the at least one opening are located at 1 / 3 to 2 / 3 of the at least one baseline.

[0012] In the aforementioned fan device, the number of the at least one opening is plurality of, and the openings are arranged at intervals along a circumferential line. Another embodiment of the present invention discloses a guide member for placement in a hub portion having a notch in a fan device, comprising a cover portion and at least one guide portion. The cover portion has at least one opening. The at least one opening is for communication with 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 for guiding a cooling airflow from the notch and the at least one opening to the drive member of the fan device to dissipate heat from the drive member of the fan device.

[0013] The aforementioned airflow guide further includes a cover portion and a side ring portion. The at least one opening is located on the cover portion, and the side ring portion is connected to the cover portion and together with the cover portion surrounds a heat dissipation space. The at least one opening is connected to the heat dissipation space, and the heat dissipation space is used to accommodate the drive component of the fan device.

[0014] In the aforementioned guide member, the angle between the at least one guide portion and the cover portion is between 0 degrees and 90 degrees.

[0015] In the aforementioned guide member, the cover has at least one baseline extending from the center of the cover to the edge of the cover, and the at least one guide member and the at least one opening are located at 1 / 3 to 2 / 3 of the at least one baseline.

[0016] In the aforementioned guide member, the number of the at least one opening is multiple, and the openings are arranged at intervals along a circumferential line.

[0017] According to the fan device and air guide member of the above embodiment, since the fan device includes an air guide member, and the hub portion has a notch and the air guide member 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 member through the notch in the hub portion and the guidance of the air guide member to dissipate heat from the drive member. In this way, the drive member will not overheat due to prolonged operation, thereby avoiding a reduction in the operating efficiency of the drive member and maintaining its service life.

[0018] The above description of the present invention and the following description of the embodiments are intended 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. Attached Figure Description

[0019] Figure 1 This is a perspective view of the fan device according to an embodiment of the present invention.

[0020] Figure 2 for Figure 1 An exploded view of the fan assembly.

[0021] Figure 3 for Figure 1 Another exploded view of the fan assembly.

[0022] Figure 4 for Figure 1 A cross-sectional view of the fan assembly.

[0023] Figure 5 for Figure 1 Another cross-sectional view of the fan assembly.

[0024] Figure 6 for Figure 1 A top view of the airflow guide of the fan unit.

[0025] Figure 7 For heat dissipation airflow Figure 1 A three-dimensional schematic diagram of the fan device with airflow in one direction.

[0026] Figure 8 For heat dissipation airflow Figure 7 A cross-sectional view.

[0027] Figure 9 For heat dissipation airflow Figure 1 A three-dimensional schematic diagram of the fan device flowing in another direction.

[0028] Figure 10 For heat dissipation airflow Figure 9 A cross-sectional view.

[0029] The attached figures are labeled as follows: 10: Fan assembly 11: Sector Frame 12: Fan blades 121: Wheel hub 1211: Gap 1212: Fixed rib 1213: Fixed bump 122: First blade section 123: Second blade section 13: Drive components 14: Airflow guide 141: Cover part 1411: Opening 142: Side ring portion 143: Flow guide A~F: Direction L: Baseline GA: Gap R: included angle S: Heat dissipation space Detailed Implementation Please see Figures 1 to 3 . 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 Another exploded view of the fan assembly.

[0030] 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, opposite to each other, 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.

[0031] 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. Specifically, 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 effects to drive the hub portion 121 to rotate relative to the sector frame 11.

[0032] Please refer to the following: Figures 4 to 6 . Figure 4 for Figure 1 A cross-sectional view of the fan assembly. Figure 5 for Figure 1 Another cross-sectional view of the fan assembly. Figure 6 for Figure 1 A top view of the airflow guide of the fan unit.

[0033] 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 is spaced apart from the hub 121, but is not limited thereto. In other embodiments, the cover 141 may also abut against the hub 121.

[0034] 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. These fixing protrusions 1213 protrude from the fixing ribs 1212. These fixing ribs 1212 abut tightly against the side ring portion 142, and these fixing protrusions 1213 abut against the side of the side ring portion 142 away from the cover portion 141, so as to fix the guide member 14 to the hub portion 121.

[0035] 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 through the gap GA, and the heat dissipation airflow is guided outward by these first blade portions 122.

[0036] 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 baselines L. These baselines L extend from the center of the cover 141 to its edge. The flow guides 143 and the openings 1411 are located at 1 / 3 to 2 / 3 of these baselines L, respectively.

[0037] 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 prolonged operation, thereby avoiding a reduction in the operating efficiency of the drive member 13 and maintaining its service life.

[0038] 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 configurations 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.

[0039] In this embodiment, the fan blade 12 is provided with these second blade portions 123 to generate cooling airflow, but this is not a limitation. In other embodiments, the fan blade may not be provided with second blade portions, but the first blade portions may be used to draw air into the cooling space, thereby attracting external airflow from the notches and openings into the cooling space.

[0040] 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 by 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.

[0041] 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.

[0042] 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.

[0043] Please see Figure 7 and Figure 8 . Figure 7 For heat dissipation airflow Figure 1 A three-dimensional schematic diagram of the fan device with airflow in one direction. Figure 8 For heat dissipation airflow Figure 7 A cross-sectional view.

[0044] like Figure 7 and Figure 8 As shown, in this embodiment, when the fan assembly 10 operates in the forward direction, the first blades 122 generate a cooling airflow, which enters along direction F. Then, the cooling airflow flows along direction E from the gap GA into the cooling space S. 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 is guided by the guides 143 and flows out of the cooling space S along direction C. Next, the cooling airflow flows along direction B from the opening 1411 to the notch 1211. Then, the second blades 123 guide the cooling airflow outward along direction A. In this way, the heat dissipation process for the drive member 13 is completed.

[0045] Please see Figure 9 and Figure 10 . Figure 9 For heat dissipation airflow Figure 1 A three-dimensional schematic diagram of the fan device flowing in another direction. Figure 10 For heat dissipation airflow Figure 9 A cross-sectional view.

[0046] like Figure 9 and Figure 10 As shown, in this embodiment, when the fan device 10 operates, the second blades 123 generate a cooling airflow, which flows along direction A through the notch 1211. Next, the cooling airflow flows along direction B from the notch 1211 to the openings 1411, and is guided by the guides 143 to flow along direction C into the cooling space S. Then, the cooling airflow flows along direction D towards the drive member 13 within the cooling space S to dissipate heat from the drive member 13. Next, the cooling airflow flows along direction E out of the cooling space S from the gap GA. Then, the first blades 122 guide the cooling airflow outward along direction F. In this way, the cooling process for the drive member 13 is completed.

[0047] According to the fan device and air guide member of the above embodiment, since the fan device includes an air guide member, and the hub portion has a notch and the air guide member 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 member through the notch in the hub portion and the guidance of the air guide member to dissipate heat from the drive member. In this way, the drive member will not overheat due to prolonged operation, thereby avoiding a reduction in the operating efficiency of the drive member and maintaining its service life.

[0048] 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 arrangement, characterized by Include: A frame; A 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 a notch. The first blade portions are connected to the hub portion. A driving component is disposed on the fan frame and connected to the hub portion, the driving component being used to drive the hub portion to rotate relative to the fan frame; as well as A flow guide is fixed to the hub portion and has at least one opening that communicates with the notch. The at least one opening is located between the notch and the drive member. The flow guide includes at least one flow guide portion that corresponds to the at least one opening. The at least one flow 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.

2. The fan device of claim 1, wherein The fan blade further includes multiple second blade portions, which are connected to the first blade portions on opposite sides of the hub portion, and the second blade portions are located at the notch and are used to generate the cooling airflow so that the cooling airflow flows from the notch to the openings.

3. The fan arrangement of claim 2, wherein, There is a gap between the hub and the fan frame, so that the cooling airflow can flow out through the gap to create a cooling space, and the cooling airflow is guided outward by the first blades.

4. The fan device of claim 3, wherein The flow guide further includes a cover and a side ring, the at least one opening is located in the cover, the side ring is connected to the cover and together with the cover surrounds the heat dissipation space, the at least one opening is connected to the heat dissipation space, and the drive is located in the heat dissipation space.

5. The fan arrangement of claim 4, wherein, The hub portion further has at least one fixed rib and at least one fixed protrusion, the at least one fixed protrusion protruding from the at least one fixed rib, the at least one fixed rib closely abutting against the side ring portion, and the at least one fixed protrusion abutting against the side of the side ring portion away from the cover portion, so as to fix the guide member to the hub portion.

6. The fan device of claim 4, wherein The angle between the at least one guide portion and the cover portion is between 0 degrees and 90 degrees.

7. The fan device as claimed in claim 4, characterized in that, The cover has at least one baseline 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 baseline.

8. The fan device as claimed in claim 1, characterized in that, The number of the at least one opening is multiple, and the openings are arranged at intervals along a circumference.

9. A flow guide, characterized in that, A hub portion having a notch is disposed in a fan assembly and has at least one opening for communicating with the notch. The air guide includes at least one air guide portion corresponding to the at least one opening. The at least one air guide portion is used to guide 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.

10. The flow guide as described in claim 9, characterized in that, It further includes a cover and a side ring, with at least one opening located on the cover, the side ring connected to the cover and together with the cover forming a heat dissipation space, the at least one opening communicating with the heat dissipation space, and the heat dissipation space used to accommodate the drive component of the fan device.

11. The flow guide as described in claim 10, characterized in that, The angle between the at least one guide portion and the cover portion is between 0 degrees and 90 degrees.

12. The flow guide as described in claim 10, characterized in that, The cover has at least one baseline 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 baseline.

13. The flow guide as described in claim 9, characterized in that, The number of the at least one opening is multiple, and these openings are arranged at intervals along a circumference.

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