TWI895694B - Heat dissipation device with heat pipe and centrifugal fan - Google Patents

Abstract

A heat dissipation device with heat pipe and centrifugal fan having a centrifugal fan and a thermal conduction cooling component surrounding one side of the centrifugal fan is provided. The thermal conduction cooling component has a heat pipe and a longitudinal fin group. The heat pipe has a transmission section, a heated portion extended from an end of the transmission section and a condensed portion extended from another end of the transmission section. The transmission section is curved and has an inner side facing the centrifugal fan. The longitudinal fin group is located between the transmission section and the centrifugal fan and latched to the inner side of the transmission section. The heat dissipation device is therefore increasing a heat dissipation efficiency by using a length of the heat pipe effectively.

Description

Heat dissipation device with heat pipe and centrifugal fan

The present invention relates to a heat sink, and more particularly to a heat sink having a heat pipe and a centrifugal fan.

Due to the rapid advancement of computer technology, electronic components such as the central processing unit (CPU) and graphics processing unit (GPU) within computers, whether desktop or laptop, are now prone to overheating, necessitating the installation of a heat sink or cooling device. Laptops, for example, face particular limitations, so cooling devices such as heat pipes, vapor chambers, and centrifugal fans are often used to provide adequate cooling performance within limited space.

Existing heat dissipation devices that combine centrifugal fans with heat pipes primarily place one end of the heat pipe in contact with the heat source, with the fan positioned at the other end to help cool the heat. However, heat pipes have a certain length. If they are too long, they tend to take up too much space; if they are too short, they can easily dry out. Therefore, how to increase the length of the heat pipe within limited space and further enhance the heat dissipation efficiency of the heat pipe and centrifugal fan combination are areas where further improvement is needed in these heat dissipation devices.

In view of this, the inventors have conducted intensive research and applied theoretical knowledge to improve and resolve the aforementioned deficiencies, ultimately proposing the present invention, which has a rational design and effectively improves the aforementioned deficiencies.

The primary purpose of this invention is to provide a heat dissipation device comprising a heat pipe and a centrifugal fan. By surrounding the heat pipe with the centrifugal fan, the heat pipe can be lengthened without taking up more space.

Another object of the present invention is to provide a heat dissipation device comprising a heat pipe and a centrifugal fan. Fins are further provided between the heat pipe and the centrifugal fan. This not only further increases heat dissipation efficiency but also increases the circumference of the centrifugal fan, thereby increasing the length of the heat pipe.

To achieve the aforementioned objectives, the present invention provides a heat dissipation device comprising a heat pipe and a centrifugal fan, comprising a centrifugal fan and a heat conduction heat dissipation assembly. The heat conduction heat dissipation assembly includes a heat pipe and a longitudinal fin assembly. The heat pipe has a transmission section, a heat receiving section extending from one end of the transmission section, and a condensation section extending from the other end of the transmission section. The transmission section is curved and has an inner side facing the centrifugal fan. The transmission section surrounds one side of the centrifugal fan, and the longitudinal fin assembly is located between the transmission section and the centrifugal fan, with the longitudinal fin assembly being bonded to the inner side of the transmission section.

<The present invention>

1: Centrifugal fan

10: Windshield

100: Air suction outlet

101: Air outlet

2: Heat conduction and heat dissipation components

20: Heat pipe

200: Transmission segment

200a: Inside

201: Heating part

202: Condensation Section

21: Vertical fin assembly

210: Curved fins

210a: Out of the wind

210b: Adhesive edge

210c: Concave arc edge

22: Horizontal fin assembly

220: Vertical fins

3: Heat Source

Figure 1 is a three-dimensional exploded view of the present invention.

Figure 2 is a three-dimensional assembly diagram of the present invention.

Figure 3 is a schematic diagram of the three-dimensional appearance of the present invention in use.

Figure 4 is a schematic top view of the present invention in use.

Figure 5 is a schematic side cross-sectional view of the present invention in use.

In order to enable the Review Committee to further understand the features and technical contents of this invention, please refer to the following detailed description and drawings of this invention. However, the attached drawings are provided for reference and illustration only and are not intended to limit the present invention.

Please refer to Figures 1 and 2, which are, respectively, exploded and assembled views of the present invention. This invention provides a heat dissipation device with a heat pipe and a centrifugal fan, comprising a centrifugal fan 1 and a heat conduction heat dissipation assembly 2 disposed around the centrifugal fan 1. The centrifugal fan 1 is configured to draw in external air through its blades and then discharge it laterally. A hood 10 may be provided around the centrifugal fan 1. The hood 10 has an air intake 100 and an air outlet 101. The air intake 100 corresponds to the blades of the centrifugal fan 1, while the air outlet 101 is located on a portion of the side of the centrifugal fan 1.

The heat conduction heat dissipation component 2 includes a heat pipe 20 and a longitudinal fin assembly 21. Please refer to Figures 3 to 5 together. The heat pipe 20 has a transmission section 200, a heat receiving portion 201 extending from one end of the transmission section 200, and a condensing portion 202 extending from the other end of the transmission section 200. The heat receiving portion 201 is used to be attached to a heat source 3, which can be an electronic heating element such as a central processing unit (CPU) or a graphics processing unit (GPU). The transmission section 200 is curved and has an inner side 200a, so that the longitudinal fin assembly 21 is located at the inner side 200a of the curved transmission section 200 (i.e., between the transmission section 200 and the centrifugal fan 1), and the longitudinal fin assembly 21 is attached to the inner side 200a of the transmission section 200. Furthermore, the longitudinal fin assembly 21 comprises a plurality of arcuate fins 210 arranged in an up-and-down arrangement. Each arcuate fin 210 has an air outlet edge 210a, a contact edge 210b, and a concave arc edge 210c. The air outlet edge 210a of each arcuate fin 210 corresponds to the condenser portion 202 of the heat pipe 20, while the contact edge 210b is used to contact the inner side 200a of the transmission section 200. The concave arc edge 210c is designed to match the partial shape of the centrifugal fan 1, placing the centrifugal fan 1 adjacent to one side of the concave arc edge 210c of the longitudinal fin assembly 21.

As shown in Figures 4 and 5, specifically, the transmission section 200 of the heat pipe 20 can be vertically flat so that its inner side 200a has a larger vertical area for contact with the contact edge 210b of each arc-shaped fin 210, thereby increasing the number of arc-shaped fins 210 that can be installed within a limited height. The heating portion 201 of the heat pipe 20 can be horizontally flat so that it has a larger contact surface area when in contact with the heat source 3. In addition, the condensing portion 202 of the heat pipe 20 can also be horizontally flat like the heating portion 201, and a horizontal fin assembly 22 can be provided on the condensing portion 202. The horizontal fin assembly 22 includes a plurality of vertical fins 220 arranged in a left-right spaced manner. Preferably, a portion of the transverse fin assembly 22 corresponds to the air outlet edges 210a of each arcuate fin 210 of the longitudinal fin assembly 21, while another portion corresponds to the air outlet 101 of the centrifugal fan 1. In other words, the air outlet edges 210a of each arcuate fin 210 and the air outlet 101 of the fan cover 10 are arranged side by side in the horizontal direction.

Therefore, by using the above-mentioned structural composition, the heat dissipation device of the present invention having a heat pipe and a centrifugal fan can be obtained.

As shown in Figures 4 and 5 , when the heat source 3 is transferred to the heat receiving portion 201 of the heat pipe 20, a phase change occurs within the heat pipe 20, allowing the heat generated by the heat source 3 to be quickly transferred from the transfer section 200 to the condensation portion 202. The centrifugal fan 1 draws in external air through its blades, which then blows out lateral airflow to help cool the longitudinal fin assembly 21. The longitudinal fin assembly 21 initially provides a condensation effect for a portion of the heat pipe 20. The lateral airflow blown out by the centrifugal fan 1 then passes through the outlet edge 210a of the longitudinal fin assembly 21, further helping to cool the lateral fin assembly 22. At the same time, because another portion of the transverse fin assembly 22 corresponds to the air outlet 101 of the centrifugal fan 1, the centrifugal fan 1 can also directly cool the transverse fin assembly 22 in part.

Therefore, in the heat dissipation device comprising a heat pipe and a centrifugal fan of the present invention, the transmission section 200 of the heat pipe 20 surrounds one side of the centrifugal fan 1, thereby increasing the length of the heat pipe 20 by utilizing the circumference of the centrifugal fan 1. Furthermore, the transmission section 200 is provided with a longitudinal fin assembly 21 on the side facing the centrifugal fan 1. This not only allows the centrifugal fan 1 to provide lateral airflow for heat dissipation, but also further increases the length of the heat pipe 20, thereby improving heat exchange efficiency.

In summary, this invention can achieve its intended purpose and address a lack of knowledge. Furthermore, due to its novelty and advancement, it fully meets the requirements for an invention patent application. Therefore, we have filed an application in accordance with the Patent Law. We sincerely request your careful review and approval of this patent to protect the inventor's rights.

However, the above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Therefore, any equivalent technologies, means, and other variations that utilize the contents of the present invention's description and drawings are similarly included within the scope of the present invention and are hereby declared.

1: Centrifugal fan

10: Windshield

100: Air suction outlet

101: Air outlet

2: Heat conduction and heat dissipation components

20: Heat pipe

200: Transmission segment

201: Heating part

202: Condensation Section

21: Vertical fin assembly

210: Curved fins

210a: Out of the wind

22: Horizontal fin assembly

220: Vertical fins

Claims (8)

A heat dissipation device with a heat pipe and a centrifugal fan includes: a centrifugal fan; and a heat conduction heat dissipation assembly, including a heat pipe and a longitudinal fin assembly, wherein the heat pipe has a transmission section, a heat receiving section extending from one end of the transmission section, and a condensing section extending from the other end of the transmission section, wherein the transmission section is curved and has an inner side facing the centrifugal fan. The longitudinal fin assembly comprises a plurality of arcuate fins arranged in an up-and-down arrangement. Each arcuate fin has a contact edge that is in contact with the inner side of the transmission section. The transmission section surrounds one side of the centrifugal fan, and the longitudinal fin assembly is positioned between the transmission section and the centrifugal fan, with the longitudinal fin assembly in contact with the inner side of the transmission section. A heat dissipation device having a heat pipe and a centrifugal fan as described in claim 1, wherein the transmission section of the heat pipe is longitudinally flat. A heat dissipation device having a heat pipe and a centrifugal fan as described in claim 1, wherein the heated portion of the heat pipe is horizontally flat. A heat dissipation device having a heat pipe and a centrifugal fan as described in claim 1, wherein the condensation portion of the heat pipe is horizontally flat. A heat dissipation device with a heat pipe and a centrifugal fan as described in claim 1 or 4, wherein a transverse fin assembly is provided on the condensing portion, and the transverse fin assembly includes a plurality of vertical fins arranged in a left-right spaced manner. A heat dissipation device having a heat pipe and a centrifugal fan as described in claim 1, wherein each of the arc-shaped fins further has an air outlet edge corresponding to the condensing section of the heat pipe, and a concave arc edge adjacent to the centrifugal fan. A heat dissipation device having a heat pipe and a centrifugal fan as described in claim 6, wherein the centrifugal fan is covered with a wind hood, the wind hood has an air intake and an air outlet, and the air outlet corresponds to the condensation part of the heat pipe. A heat dissipation device with a heat pipe and a centrifugal fan as described in claim 7, wherein the air outlet edge of each arc-shaped fin and the air outlet of the air hood are arranged side by side in the horizontal direction.