Cooling fan

Abstract

To provide a cooling fan that is thin, reduces reverse airflow, and improves the cooling effect when combined with a heat-generating part of an electronic device. [Solution] The cooling fan 100 includes a frame body 10, an air guide section 11, a support section, a drive unit, and blades 30. At least one air guide section and one support section are provided on one side of the frame body. A drive unit is disposed on the support section and is located in the center of the frame body. The blades are rotatably connected to the drive unit, and the drive unit drives the blades to rotate. Multiple support posts 111 of the frame body are disposed opposite one side of the frame body. This achieves a slim design, reduces backflow of air by utilizing the air guide section, and improves cooling effectiveness when combined with heat-generating parts of electronic devices.

Description

[Technical Field]

[0001] The present invention relates to cooling technology for electronic devices, and more particularly to an axial suction or blowing type cooling fan. [Background technology]

[0002] In recent years, as the performance of electronic devices has improved, cooling devices have become essential equipment. If the heat energy generated by electronic devices is not properly dissipated, it can lead to reduced functionality or damage to the device. Therefore, the development of high-performance cooling devices has become an important issue in the electronics industry. 3C devices in particular use a large number of integrated circuits, and high temperatures are their greatest enemy, causing system instability, shortening their lifespan, and even burning out components.This heat does not come from the outside, but from within the device, i.e., from within the integrated circuits.The role of a cooling device is to absorb this heat and dissipate it within the housing or externally, thereby stabilizing the temperature inside the device.

[0003] The most common combination of a fan and heat dissipation fins in current cooling devices is categorized as either axial or centrifugal. Axial fans have the advantages of high efficiency, large airflow, and low noise, and are typically installed on the heat dissipation fins. This structure allows relatively cool air to be drawn in through the fan's intake port, pass through the heat dissipation fins, and then release heated air through the exhaust port. However, the conventional technology requires improved cooling efficiency, and this invention aims to address these issues. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention provides a cooling fan that reduces backflow and improves cooling efficiency. [Means for solving the problem]

[0005] The cooling fan of this invention has at least one air guide and one support on one side of a frame body, with multiple frame struts connected to the support. A drive unit is installed on the support and located in the center of the frame body. The blades are rotatably connected to and driven by the drive unit. The multiple frame struts are located opposite each other on one side of the frame body, and the cooling fan of this invention is either a suction type or a blowing type.

[0006] The cooling fan of this invention can be used in combination with a cooling module, and utilizes an air guide to direct airflow through the blades to flow in and out. As the airflow passes through the exhaust passage, it guides a portion of the airflow that would otherwise be blown toward the cooling module toward the periphery of the cooling module, reducing the strength of backflow from the cooling module and suppressing turbulence. Furthermore, the airflow from the exhaust passage promotes airflow around the cooling module, improving cooling efficiency. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view of a first embodiment of the present invention; [Figure 2] FIG. 2 is a bottom view of the first embodiment of the present invention. [Figure 3] FIG. 2 is a side view of the first embodiment of the present invention. [Figure 4] 2 is a partial schematic diagram of a second embodiment of the present invention. [Figure 5] 1 is a partially enlarged schematic view of a third embodiment of the present invention. [Figure 6] 1 is a schematic diagram showing the use state of the first embodiment of the present invention. [Figure 7] 1 is a schematic diagram showing the use state of the first embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0008] 1 and 2, and also 3, there is shown a cooling fan 100 according to a first embodiment of the present invention. The cooling fan 100 includes the following elements:

[0009] Frame body 10: Two sets of air guide sections 11 and support sections 12 are provided on one side of the frame body 10. Each air guide section 11 includes two frame supports 111, which are spaced apart. An exhaust passage 101 is formed between the frame supports 111 and one side of the frame body 10, and the support sections 12 connect these frame supports 111. As shown in FIGS. 1 to 3, the frame body 10 is rectangular and has a circular groove 13 formed in its center. The frame supports 111 are arranged on one side of the end of the frame body 10, and the two sets of air guide sections 11 are arranged on one side of the four corners of the frame body 10. An exhaust passage 101 is formed between each frame support 111. Furthermore, as shown in FIG. 2, each frame support 111 has two air guide surfaces 1111 and one wind-welding curved surface 1112. The wind-welcoming curved surface 1112 is disposed between the two wind guide surfaces 1111 and is continuous with the inner wall of the circular groove 13. The wind guide surfaces 1111 are disposed parallel to each other.

[0010] Drive unit 20: The drive unit 20 is installed on the support part 12 and is arranged in the center of the frame body 10. In this embodiment, the drive unit 20 is an electric motor, but is not limited to this. The support part 12 is provided with a plurality of connecting ribs 121, and ventilation holes are formed between adjacent connecting ribs 121. Furthermore, some of the connecting ribs 121 are provided with wire grooves 1211 for accommodating electric wires, and conductive wires for connection to the drive unit 20 can be arranged therein (not shown).

[0011] Blade 30: The blade 30 is rotatably connected to the drive unit 20 and is rotationally driven by the drive unit 20. The blade 30 is disposed in the circular groove 13. In this embodiment, the blade 30 has an odd number of blades, which improves durability by suppressing resonance during high-speed rotation. In addition, the blades of the blade 30 are formed in a spiral shape and have blade-like edges at their tips. This structure allows for increased air flow, reduces air resistance on the blades, and suppresses noise. This optimizes the hydrodynamics of the blade 30, reduces wear, and improves durability.

[0012] Referring to Figure 6, the cooling fan 100 of the present invention is shown in use. The cooling fan 100 of the present invention can operate in either a suction or blowing mode. In this embodiment, a blowing cooling fan is described, but the present invention is not limited to this. As shown in the figure, the cooling fan 100 is attached to the cooling module 200 and is located above the cooling module 200. The cooling fan 100 blows air downward in a linear direction relative to the cooling module 200.

[0013] To further clarify the structural features, technical approaches, and expected effects of the present invention, the method of using the cooling fan 100 will now be described.

[0014] 2, 6, and 7 show a top view and a schematic diagram illustrating a usage state of a first embodiment of the present invention. The cooling fan 100 of the present invention introduces or exhausts airflow to the blades 30 through the air guide section 11. An exhaust passage 101 is formed between the frame support 111 and one side of the frame body 10. The airflow passing through the blades 30 passes through the exhaust passage 101, reducing backflow and allowing the air to be efficiently blown to the fins of the cooling module 200. Furthermore, the airflow is uniformly distributed throughout the cooling module 200, effectively dissipating heat from the heat source.

[0015] 4, in the second embodiment of the present invention, the air guide surfaces 1111 between the frame supports 111 are formed as inclined surfaces, and the opening of the exhaust passage 101 widens or narrows toward the outside of the frame body 10. This structure allows for the same cooling effect as in the first embodiment.

[0016] Referring to Figure 5, a third embodiment of the present invention is shown. In this embodiment, the air guide surface 1111 of the frame support 111 is formed as a curved arc, which can guide the airflow more smoothly and optimize the airflow to both sides of the fan, thereby reducing fluid resistance. This embodiment also has the same cooling effect as the first embodiment.

[0017] First, by forming an exhaust passage 101 between the frame support 111 and one side of the frame body 10, a portion of the airflow toward the cooling module 200 through the exhaust passage 101 is guided during use, reducing backflow of air from the cooling module 200 and suppressing turbulence. In addition, the airflow around the cooling module 200 is promoted through the exhaust passage 101, improving cooling efficiency.

[0018] Secondly, the present invention has the advantages of high efficiency, large air volume and low noise, and achieves slimness and high performance, meeting the requirements of the latest slim electronic devices.

[0019] Although the specific embodiments of the present invention have been described above, those skilled in the art will appreciate that various modifications and improvements can be made within the technical scope of the present invention. Note that these embodiments are merely examples of the present invention and do not limit the scope of the present invention. Improvements and modifications within the scope of the present invention are also included in the scope of protection of the present invention. [Explanation of symbols]

[0020] 100: Cooling fan 10: Frame body 11: Air guide section 111: Frame support 1111: Wind guide surface 1112: Wind curve 12: Support part 121: Connecting rib 1211: Line groove 13: Circular groove 20: Drive unit 30: Feather 101: Exhaust passage 200: Cooling module

Claims

1. A cooling fan comprising: a frame body having at least one air guide section and one support section on one side; a drive unit installed on the support section and arranged at the center of the frame body; and a plurality of blades rotatably connected to the drive unit and driven to rotate by the drive unit, wherein a plurality of frame supports of the frame body are arranged opposite one side of the frame body, the cooling fan is either a suction type or a blowing type, and the plurality of blades are formed in a spiral shape.

2. 2. The cooling fan according to claim 1, wherein the air guide section includes two frame supports arranged at a distance from each other, an exhaust passage is formed between the frame supports, each frame support has at least two air guide surfaces, the air guide surfaces are located within the exhaust passage, the frame body is rectangular, and the frame supports are each arranged on one side of an end of the frame body.

3. 3. The cooling fan according to claim 2, wherein the frame body is provided with two air guide sections, frame supports of each air guide section are arranged on one side of the four corners of the frame body, and an exhaust passage is formed between each of the frame supports.

4. 3. The cooling fan according to claim 1, wherein the frame body has a circular groove with an open shape at the center thereof, and the blades are disposed in the circular groove.

5. 5. The cooling fan according to claim 4, wherein the frame support has two wind guide surfaces and one wind-facing curved surface, the wind-facing curved surface is located between the two wind guide surfaces, and the wind-facing curved surface is connected to an inner wall of the circular groove.

6. 6. The cooling fan according to claim 5, wherein the air guide surfaces between the frame supports are arranged in parallel.

7. 6. The cooling fan according to claim 5, wherein the air guide surface between the frame supports is an inclined surface, and the opening of the exhaust passage is expanded or contracted toward the outside of the frame body.

8. 6. The cooling fan according to claim 5, wherein at least one air guide surface of the frame support has a curved arc surface.

9. 2. The cooling fan according to claim 1, wherein the support portion has a plurality of connecting ribs, a ventilation hole is formed between adjacent connecting ribs, and at least one connecting rib is provided with a groove for arranging an electric wire.

10. 2. The cooling fan according to claim 1, wherein the cooling fan is attached to at least one cooling module, the cooling fan is disposed above the cooling module, and the cooling fan is configured to blow air in the same direction as the cooling module.

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