TWI895143B - Heat dissipation device - Google Patents

Abstract

A heat dissipation device, which is arranged on a base, and the heat dissipation device comprises a first fan and a blower assembly. the first fan may be rotatably arranged at the base, the first fan has a rotating part and a plural first blade, and the plural first blade ring is arranged at the rotating part; The blower assembly is arranged at the first fan, the blower assembly has a first support and a plural first blower blade, the first support is arranged at the plural first blade, and the plural first blower blades are arranged in the first support along the axial direction of the rotating part. Thus, with the cooperation of the first fan and the blower assembly, this disclosure can direct the airflow in different directions, further increasing the airflow flow, so as to achieve the purpose of effective heat dissipation to the CPU.

Description

heat sink

This disclosure relates to a device, and more particularly to a heat dissipation device.

The Central Processing Unit (CPU) is primarily responsible for processing system data and decoding and executing instructions. Today, CPU performance has significantly improved, allowing it to handle larger workloads and achieve faster processing speeds. However, CPU operation consumes more energy to perform calculations, generating significant heat. This reduces CPU performance and lifespan.

In the past, a cooling fan was placed near the CPU to direct airflow and dissipate heat from the CPU. However, the cooling effect of these fans has reached its limit and cannot be further improved.

The purpose of this disclosure is to provide a heat dissipation device to effectively dissipate heat from a CPU.

The aforementioned objectives do not preclude the existence of other objectives. Any objectives that can be inferred by a person skilled in the art from the description, patent application, or drawings of this disclosure are also included in the objectives of this disclosure. Therefore, the objectives of this disclosure are not limited to the aforementioned objectives.

To achieve the above objectives, the present disclosure provides a heat dissipation device mounted on a base. The heat dissipation device includes a first fan and a blower assembly. The first fan is rotatably mounted on the base and has a rotating portion and a plurality of first blades disposed around the rotating portion. The blower assembly is mounted on the first fan and includes a first bracket and a plurality of first blower blades. The first bracket is mounted on the plurality of first blades, and the plurality of first blower blades are arranged on the first bracket along the axis of the rotating portion.

In summary, with the cooperation of the first fan and the blower assembly, the present disclosure can guide airflow in different directions, further increasing the airflow rate, thereby achieving the purpose of effectively cooling the CPU.

100: Heat dissipation device

1: Base

1a: Power Source

10: First Fan

11: Rotating part

12: First leaf

121: Outer edge

20: Blower assembly

21: First bracket

211: Inside

22: First blast blade

221: First inner arc surface

222: Outer curved surface

23: Second blower blade

231: Second inner arc surface

24: Second bracket

30: Second Fan

31: Second leaf

A1: First ventilation area

A2: Second ventilation area

D1: First spacing

D3: Third distance

L: Axial direction

Figure 1 is a schematic three-dimensional diagram of a heat sink according to an embodiment of the present disclosure, particularly illustrating the exterior features of the heat sink.

Figure 2 is a schematic side view of a heat dissipation device according to an embodiment of the present disclosure, particularly illustrating the arrangement of the first fan and the air blowing assembly.

Figure 3 is a schematic three-dimensional diagram (I) of a heat dissipation device according to one embodiment of the present disclosure, particularly illustrating the external features of the second blower blade.

Figure 4 is a schematic side view of a heat dissipation device according to one embodiment of the present disclosure (1), particularly illustrating the arrangement of the first and second blower blades.

Figure 5 is a schematic diagram illustrating an embodiment of a heat sink according to the present disclosure, and more particularly, illustrates the airflow directed by the heat sink.

Figure 6 is a schematic three-dimensional diagram (Part 2) of a heat dissipation device according to one embodiment of the present disclosure, particularly illustrating the external features of the second fan.

Figure 7 is a schematic cross-sectional view taken along line A-A of Figure 6, specifically illustrating the arrangement of various components.

To facilitate the description of the central concept of this disclosure as presented above, specific embodiments are presented. The various objects in these embodiments are depicted using proportions, dimensions, deformations, or displacements suitable for illustration, and are not drawn to scale according to actual components. This should be noted in advance.

The following describes exemplary embodiments of the present disclosure in detail with reference to the drawings. This is not intended to limit the technical principles of the present disclosure to the specific disclosed embodiments. The scope of the present disclosure is limited only by the scope of the patent application and covers alternatives, modifications, and equivalents.

Referring to Figures 1 to 7 , in an embodiment of the present disclosure, a heat dissipation device 100 is provided, which is disposed on a base 1.

The base 1 has a power source 1a, which can rotate the heat sink 100.

Please refer to Figure 1 . The heat dissipation device 100 includes a first fan 10 and an air blowing assembly 20.

The first fan 10 is rotatably mounted on the base 1. Referring to Figure 2 , the first fan 10 comprises a rotating portion 11 and a plurality of first blades 12. The rotating portion 11 is connected to the power source 1a of the base 1 and drives the plurality of first blades 12 to rotate. The plurality of first blades 12 are disposed around the rotating portion 11. The number of blades in the plurality of first blades 12 can be adjusted based on actual circumstances and is not limited by the description herein.

The air blower assembly 20 is mounted on the first fan 10. Referring to FIG. 2 , the air blower assembly 20 comprises a first bracket 21 and a plurality of first air blower blades 22 . The number of the plurality of first air blower blades 22 may be adjusted based on actual circumstances and is not limited by the description herein.

The first bracket 21 is mounted on the plurality of first blades 12 and rotates with the rotation of the plurality of first blades 12. The plurality of first blower blades 22 are arranged on the first bracket 21 along the axial direction L of the rotating portion 11. This allows the plurality of first blower blades 22 to draw in air from the sides of the heat sink 100, further increasing airflow and achieving optimal heat dissipation.

Referring to Figure 2 , the first bracket 21 of the blower assembly 20 is ring-shaped. A plurality of first blower blades 22 are arranged along an inner side 211 of the first bracket 21 , forming a ring-shaped arrangement. The first blades 12 have an outer edge 121 on a side distal from the rotating portion 11 , and the first bracket 21 is adjacent to the outer edge 121 . This allows the first blower blades 22 to optimally draw air from the sides of the heat sink 100 as they rotate.

Please refer to Figure 3 , which shows that the air blowing assembly 20 has a plurality of second air blowing blades 23. The number of the plurality of second air blowing blades 23 may be adjusted based on actual circumstances and is not limited to the description of this disclosure.

As shown in Figures 3 and 4 , a plurality of second blower blades 23 are disposed on the rotating portion 11 along the axial direction L of the rotating portion 11 and are arranged in a ring around the rotating portion 11. As shown in Figure 5 , when the first fan 10 rotates, the first blower blades 22 draw in air from the sides of the heat sink 100 and direct it toward the second blower blades 23. The second blower blades 23 block some of the airflow, directing it toward the first fan 10. Of course, the first fan 10 also draws in air from different directions to increase airflow.

In one embodiment of the present disclosure, each first blast blade 22 has a first inner curved surface 221 and an outer curved surface 222. Each first inner curved surface 221 faces the outer curved surface 222 of another first blast blade 22, thereby allowing the first blast blades 22 to be arranged in a circular pattern on the first bracket 21. Furthermore, each second blast blade 23 has a second inner curved surface 231, which faces the plurality of first blast blades 22, thereby blocking a portion of the airflow shown in Figure 5. Thus, the design of the inner curved surfaces of each first blast blade 22 and each second blast blade 23 enhances the airflow guidance effect.

In one embodiment of the present disclosure, each first blast blade 22 has a first spacing D1 between them. Furthermore, the closest distance between the first blast blade 22 and the second blast blade 23 is a third spacing D3.

In one embodiment of the present disclosure, a first ventilation area A1 is formed between the plurality of first blast blades 22 and the plurality of second blast blades 23. The plurality of second blast blades 23 enclose a second ventilation area A2. Specifically, the first ventilation area A1 is located outside the plurality of second blast blades 23, while the second ventilation area A2 is located inside the plurality of second blast blades 23. The volume of the first ventilation area A1 is larger than that of the second ventilation area A2, meaning that the airflow rate carried by the first ventilation area A1 is greater than that carried by the second ventilation area A2.

As shown in FIG6 , the air blower assembly 20 includes a second bracket 24 . As shown in FIG7 , the second bracket 24 is positioned on a side of the plurality of first air blower blades 22 away from the first bracket 21 , such that the first bracket 21 and the second bracket 24 are positioned opposite each other. The heat dissipation device 100 further includes a second fan 30 , which is positioned on the second bracket 24 , such that the first fan 10 and the second fan 30 are positioned opposite each other. This further increases the flow rate of the introduced air.

In one embodiment of the present disclosure, the second bracket 24 of the air blower assembly 20 is ring-shaped. The second fan 30 has a plurality of second blades 31 mounted on the second bracket 24. The second bracket 24 is positioned adjacent to the edges of the second blades 31. The second air blower blades 23 may or may not be in contact with the second fan 30.

In summary, this disclosure has the following technical features:

1. With the cooperation of the first fan 10 and the air blowing assembly 20, the present disclosure can guide airflow in different directions. This increases the airflow rate and effectively dissipates heat from the CPU.

Second, the present disclosure can be combined with a first fan 10, a blower assembly 20, and a second fan 30 according to different implementation scenarios to further increase the airflow rate.

The aforementioned effects do not preclude the existence of other effects. Effects that can be inferred from the description, patent application, or drawings by a person skilled in the art are also included in the effects disclosed herein. Therefore, the effects disclosed herein are not limited to the aforementioned effects.

The above examples are intended only to illustrate the present disclosure and are not intended to limit its scope. Any modifications or variations that do not violate the spirit of the present disclosure are intended to be protected by the present disclosure.

100: Heat dissipation device

1: Base

10: First Fan

11: Rotating part

12: First leaf

121: Outer edge

20: Blower assembly

21: First bracket

211: Inside

22: First blast blade

221: First inner arc surface

L: Axial direction

Claims (8)

A heat dissipation device is mounted on a base and includes: a first fan rotatably mounted on the base, the first fan having a rotating portion and a plurality of first blades, the first blades being arranged around the rotating portion; a blower assembly mounted on the first fan, the blower assembly having a first bracket, a plurality of first blower blades, and a second bracket, the first bracket being mounted on the first blades, the first blower blades being arranged on the first bracket along the axis of the rotating portion, the second bracket being mounted on a side of the first blower blades away from the first bracket; and a second fan mounted on the second bracket. The heat dissipation device as described in claim 1, wherein the air blowing assembly has a plurality of second air blowing blades, the second air blowing blades are arranged on the rotating part along the axial direction of the rotating part, and the second air blowing blades are arranged in a ring shape on the rotating part. As described in claim 2, the heat dissipation device, wherein each of the first blast blades has a first inner curved surface and an outer curved surface, and each of the first inner curved surfaces faces the outer curved surface of another first blast blade, so that each of the first blast blades is arranged in a ring shape on the first bracket. The heat dissipation device as described in claim 3, wherein each of the second blast blades has a second inner curved surface, and each of the second inner curved surfaces faces the first blast blades. A heat dissipation device as described in claim 4, wherein a first ventilation area is formed between the first blast blades and the second blast blades, and the second blast blades enclose a second ventilation area, and the volume of the first ventilation area is larger than the volume of the second ventilation area. The heat dissipation device as described in claim 2, wherein the second bracket of the air blowing assembly is ring-shaped, and the second fan has a plurality of second blades, and the second blades are arranged on the second bracket. The heat dissipation device as described in claim 1, wherein the first bracket of the blowing assembly is ring-shaped, and the first blowing blades are arranged along the inner side of the first bracket. The heat dissipation device as described in claim 7, wherein the first blades have an outer edge on a side away from the rotating portion, and the first bracket is adjacent to the outer edge.