TW201439733A - Heat sink assembly and graphics card module - Google Patents

Abstract

A graphics card module includes a circuit board and a heat sink assembly, and the heat sink assembly is disposed on the circuit board corresponding to a heat generating element of the circuit board. The heat sink assembly comprises a radiator and a plurality of centrifugal fans, wherein the radiator has a plurality of fins that are arranged at regular intervals, and a plurality of paths is formed between the two fins. The centrifugal fans of the axial direction are the same and that are arranged at regular intervals in a side of the radiator, and the centrifugal fans are corresponding to the paths. Each of the centrifugal fan has an air inlet and an air outlet, the air inlets are approached the paths, and the air outlets are disposed at the other side of the radiator.

Description

Cooling component and display card module

The invention relates to a heat dissipating component and a display card module, in particular to a heat dissipating component with a fan and a display card module having the same.

With the rapid development of high-tech industries in recent years, the volume of electronic components in electronic products has become more and more small, and the density per unit area has become higher and higher, and the overall performance has been continuously enhanced. There is also a need for a heat sink that can ensure sufficient cooling capacity in a narrow area. The operating temperature of each component of the electronic device is kept within a reasonable range to promote heat exchange with the environment.

The conventional heat sink mainly includes a body having a plurality of heat radiating fins, and in order to improve heat dissipation efficiency, an axial fan is usually installed, which is fixed on the heat radiating fin of the body, and the heat sink is used when The bottom surface of the body is attached to the heat generating component, for example, to a heat generating component that generates a large amount of waste heat during operation such as a central processing unit (CPU) or a graphic processing unit (GPU). The heat conduction transmits the heat source to the heat dissipation fins, and the airflow generated by the fan is blown toward the body toward the heat dissipation fins, so that the heat source is dissipated, thereby cooling and cooling the heating element.

However, since the axial flow fan of the conventional heat sink is blown vertically downward from the upper side of the body, the swirling airflow sent by the fan will vertically impinge on the body to cause turbulence and the like, so that the airflow cannot flow smoothly, thereby obstructing the airflow. The flowability leads to a reduction in the heat dissipation effect, which in turn affects the performance of the heating element. In addition, the arrangement of the heat sink can generally only be used with a single fan, and because of the limited air volume of the fan, the heat dissipation performance of the heat sink is often limited, and the heat dissipation effect cannot be provided.

Therefore, if the fan of the radiator can generate a smooth airflow and interact with the airflow in the fins to form a smooth flow path, the heat dissipation efficiency and the better can be achieved compared with the conventional technology. Cooling effect.

In view of the above problems, the present invention provides a heat dissipating component and a display card module, so as to solve the problem that the axial fan of the conventional heat sink is blown vertically downward from the upper side of the body, and the swirling airflow sent by the fan will vertically impinge on the body to generate turbulence. Therefore, the airflow cannot be smoothly circulated, and stays between the fins, resulting in a decrease in heat dissipation effect, thereby affecting the operational efficiency of the heating element.

The present invention provides a heat dissipating assembly including a heat sink and a plurality of centrifugal fans, wherein the heat sink has a plurality of spaced fins, and a plurality of heat dissipating passages are formed between the fins. A plurality of centrifugal fans are arranged on one side of the heat sink, and a plurality of centrifugal fans correspond to a plurality of heat dissipation channels and have the same axial direction. Each centrifugal fan has an air inlet and an air outlet, the air inlet is adjacent to the heat dissipation channel, and the air outlet is disposed on the other side of the centrifugal fan relative to the radiator, and each centrifugal fan sucks the airflow in each heat dissipation channel through the air inlet, and then It is discharged through the air outlet.

The invention further provides a display card module comprising a circuit board and a heat dissipation component. The circuit board has a connection interface and a heat generating component. The heat dissipating component is disposed on the circuit board, and the heat dissipating component comprises a heat sink and a plurality of centrifugal fans, wherein the heat sink is disposed on the heating element, and the heat sink has a plurality of spaced fins, and the heat dissipating fins A plurality of heat dissipation channels are formed, and the heat dissipation channels correspond to the connection interfaces. a plurality of centrifugal fans are spaced apart from each other in the heat sink relative to the connection interface Side and have the same axial direction. Each centrifugal fan has an air inlet and an air outlet, the air inlet is adjacent to the heat dissipation channel, and the air outlet is disposed on the other side of the centrifugal fan relative to the radiator, and each centrifugal fan sucks the airflow in each heat dissipation channel through the air inlet, and then It is discharged through the air outlet.

The effect of the invention is that the heat dissipating component and the display card module not only utilize the design of a plurality of centrifugal fans connected in series, but also increase the number of fans, and use the negative pressure generated by the plurality of fans to drive the airflow to the airflow channel when the air inlet is operated. The rapid flow inside makes a good heat exchange between the airflow and the radiator. At the same time, the direction of the centrifugal fan blowing and the position of the radiator are used to form a smooth airflow path to avoid the airflow with waste heat. It stays on the circuit board, which helps to improve the heat exchange between the heat sink and the outside air to achieve good heat dissipation efficiency and heat dissipation.

The features, implementations, and utilities of the present invention are described in detail below with reference to the drawings.

10‧‧‧Display Card Module

100‧‧‧ boards

110‧‧‧Connection interface

120‧‧‧heating components

200‧‧‧Heat components

210‧‧‧ radiator

211‧‧‧ Heat sink fins

212‧‧‧Solution channel

220‧‧‧ centrifugal fan

221‧‧‧ air inlet

222‧‧‧air outlet

230‧‧‧wind hood

231‧‧‧Upper cover

232‧‧‧ side cover

233‧‧‧ deflector

234‧‧‧ first opening

235‧‧‧ second opening

FIG. 1 is an exploded perspective view of a display card module according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a combination of a display card module according to an embodiment of the present invention.

3 and 4 are schematic views showing the state of use of the heat dissipating component of the display card module according to an embodiment of the present invention.

The heat dissipating component 200 of the embodiment of the present invention is described as an embodiment of the heat dissipating component of the display card module, but is not limited to the type disclosed in the embodiment. The appearance of the heat dissipating component 200 of the present invention is correspondingly changed according to actual design requirements or usage requirements.

Please refer to FIG. 1 to FIG. 2 for an exploded schematic view and a combined schematic view of a display card module according to an embodiment of the present invention. The display card module 10 of the embodiment includes a circuit board 100 and a heat dissipation component 200. The circuit board 100 has a connection interface 110 and a heat generating component 120. The connection interface 110 is disposed on one side of the circuit board 100. The interface board 110 can be, but is not limited to, a Peripheral Component Interconnect (PCI) or a high speed. A standard gold finger structure such as a peripheral component interconnect (PCI Express, PCI-E) is used to electrically insert the circuit board 100 into a corresponding electrical socket on a motherboard (not shown). In addition, the heat generating component 120 can be, but is not limited to, a graphics processor or other integrated circuit chip that generates a large amount of waste heat during operation.

The heat dissipation component 200 of the embodiment is disposed on the circuit board. The heat sink 210 has a plurality of spaced-apart heat sink fins 211, and a plurality of heat dissipation channels 212 are formed between the heat dissipation fins 211. The material of the heat sink 210 may be a material such as aluminum or aluminum alloy, which has good thermal conductivity and heat dissipation. The heat dissipating component 200 is configured such that the bottom surface of the heat sink 210 contacts the heat generating component 120, so that the heat source of the heat generating component 120 can be transmitted to the heat sink fin 211, and the heat in the heat dissipation channel 212 is carried out through the flow of the airflow to achieve the function of dissipating heat. .

Please refer to an embodiment of the present invention shown in FIGS. 3 to 4 A schematic diagram of the state of use of the heat dissipating component of the disclosed display card module. A plurality of centrifugal fans 220 are arranged in the same axial direction at the other side of the heat sink 210 with respect to the connection interface 110, and may be disposed in a coaxial corresponding manner or in a manner in which the axes are connected in series to each other. One side of the device 210. In addition, the plurality of centrifugal fans 220 correspond to the plurality of heat dissipation channels 212, and each of the centrifugal fans 220 has an air inlet 221 and an air outlet 222. The air inlet 221 is formed on the casing of the centrifugal fan 220 and close to the heat dissipation channel 212. The position may be, but is not limited to, a position corresponding to the axis of the housing of the centrifugal fan 220, so as to absorb the airflow in the heat dissipation channel 212. In contrast, the air outlet 222 is opened on the casing of the centrifugal fan 220. Relative to the other side of the heat sink 210, in order to pass the inhaled hot air flow through the air outlet 222 Out.

It should be noted that the number of the centrifugal fan 220 disclosed in the present invention is seven, but it is not limited to the number in the embodiment, and those skilled in the art can change the invention according to actual needs. The number of configurations of the centrifugal fan 220.

Based on the above structure, each of the centrifugal fans 220 of the present invention can be disposed in a series or coaxial manner, for example, seven centrifugal fans 220 can be disposed, and each centrifugal fan 220 is brought close to each other by the increase in the number of fans, and is in the heat sink 210. One side covers the distribution of a plurality of heat dissipation channels 212. Therefore, when the centrifugal fans 220 are operated together at the same time, a larger negative pressure is generated at the near air outlet 221 and interacts with the air flow, thereby accelerating the flow of the airflow, so that the airflow in the heat dissipation passage 212 is generated by the negative pressure. The strong suction force is quickly sucked into the centrifugal fan 220 through the air inlet 221, and then discharged through the air outlet 222 to form a smooth heat dissipation path to achieve a good heat dissipation effect.

In addition, in order to provide a better heat dissipation effect, the heat dissipation assembly 200 of the present embodiment can be selectively installed with an air guiding cover 230, and the heat sink 210 and the plurality of centrifugal fans 220 are respectively installed in the air guiding cover 230, and The air hood 230, the heat sink 210 and the plurality of centrifugal fans 220 are integrated into each other by a plurality of fasteners. The air hood 230 includes an upper cover 231, a side cover 232 and a baffle 233, and the air hood 230 has a first opening 234 and a second opening 235. The first opening 234 is defined by the upper cover 231. The second opening 235 is defined in the side cover 232, and when the air guiding cover 230 covers the heat sink 210 and the plurality of centrifugal fans 220, the upper cover 231 of the air guiding cover 230 covers the heat radiating fins of the heat sink 210 and a plurality of The heat dissipation channel 212 and the first opening 234 are connected to the heat sink 210 on the other side of the centrifugal fan 220 corresponding to the plurality of heat dissipation channels 212.

The side cover 232 of the air hood 230 covers the top surface of the plurality of centrifugal fans 220 and the outer side of the outermost centrifugal fan 220, and the second opening 235 of the air hood 230 corresponds to the air outlet of the plurality of centrifugal fans 220. 222, wherein the second opening 235 is a single open opening or a mesh opening covering a plurality of centrifugal fans 220, but is not limited thereto. The upper cover 231 and the side cover 232 are connected to each other by the deflector 233, so that the deflector 233 covers the space between the heat sink 210 and the plurality of centrifugal fans 220, so that the airflow can pass from the heat sink 210 via the deflector 233. One side is directly guided to one side of the air inlet 221 adjacent to the plurality of centrifugal fans 220.

It should be noted that, by the structure of the air guiding hood 230, the airflow can smoothly guide the airflow into the air guiding hood 230 through the first opening 234, and flow into the respective heat dissipation channels 212, respectively, and the centrifugal fans 220 are continuously The airflow is quickly extracted from the heat dissipation channel 212, and the airflow is guided by the second opening 235 to form a smooth airflow path, which can greatly improve the heat dissipation efficiency and achieve better heat dissipation.

In addition, in the application, when the display card module 10 of the present invention is electrically inserted into a motherboard through the connection interface 110, the circuit board 100 of the motherboard and the display card module 10 are perpendicular to each other. If the direction in which the centrifugal fan 220 is blown is toward the heat sink 210, the airflow may cause turbulence and the like on the main board. Therefore, the direction in which the centrifugal fan 220 is blown in the opposite direction of the heat sink 210 is At the same time, the hot air in the heat dissipation channel 212 is continuously sucked out to form a smooth airflow path, so as to prevent the airflow with waste heat from staying between the circuit board 100 of the display card module 10 and the motherboard or the motherboard. A hot spot is formed on the upper surface, causing the electronic components on the circuit board 100 to burn out due to overheating.

According to the exemplification of the embodiment of the present invention, it can be clearly understood that the heat dissipating component and the display card module of the present invention can be designed to solve the axial flow of the conventional heat sink by connecting a plurality of centrifugal fans and a fan blowing direction. The fan is blown vertically downward from the upper side of the radiator, and the rotating airflow sent by the fan will vertically impinge on the body to generate turbulence, so that the airflow cannot flow smoothly to form a retention phenomenon, thereby causing a decrease in heat dissipation effect, thereby affecting the operation of the heating element. The problem of performance.

Compared with the prior art, the heat dissipating component and the display card module of the invention not only utilize the design of a plurality of centrifugal fans connected in series, but also increase the negative pressure of the fan, so that the airflow forms a good interaction, and at the same time, the centrifugal fan is further utilized. The direction of blowing and the position where the heat sink is placed to form a smooth airflow helps to improve the heat exchange with the outside air to achieve good heat dissipation efficiency and heat dissipation.

Although the embodiments of the present invention are disclosed above, it is not intended to limit the present invention, and those skilled in the art, regardless of the spirit and scope of the present invention, the shapes, structures, and features described in the scope of the present application. And the number of modifications may be made, and the scope of patent protection of the present invention shall be determined by the scope of the patent application attached to the specification.

10‧‧‧Display Card Module

100‧‧‧ boards

110‧‧‧Connection interface

120‧‧‧heating components

200‧‧‧Heat components

210‧‧‧ radiator

211‧‧‧ Heat sink fins

212‧‧‧Solution channel

220‧‧‧ centrifugal fan

221‧‧‧ air inlet

222‧‧‧air outlet

230‧‧‧wind hood

231‧‧‧Upper cover

232‧‧‧ side cover

233‧‧‧ deflector

234‧‧‧ first opening

235‧‧‧ second opening

Claims (10)

A heat dissipating component includes: a heat sink having a plurality of heat dissipating fins, and forming a plurality of heat dissipating passages between the heat dissipating fins; and a plurality of centrifugal fans spaced apart from one side of the heat sink The centrifugal fan corresponds to the heat dissipation channels and has the same axial direction. Each of the centrifugal fans has an air inlet and an air outlet. The air inlet is adjacent to the heat dissipation channels, and the air outlet is disposed on the centrifugal fan. On the other side of the heat sink, each of the centrifugal fans sucks the airflow in the heat dissipation passages through the air inlet, and then discharges through the air outlet. The heat dissipating component of claim 1, further comprising an air guiding cover having a first opening and a second opening, wherein the heat sink and the centrifugal fan are disposed in the air guiding cover, the first An opening corresponding to the heat dissipation passages of the heat sink, the second opening corresponding to the air outlet of the centrifugal fan. The heat dissipation assembly of claim 2, wherein the air hood comprises an upper cover, a side cover and a baffle, the first opening is disposed on the upper cover, and the second opening is disposed on the side cover, and The upper cover corresponds to the heat sink, and the side cover corresponds to the air outlets, and the upper cover and the side cover are connected to each other by the deflector. The heat dissipating component of claim 1, wherein the centrifugal fans are coaxially disposed. The heat dissipating component of claim 1, wherein the centrifugal fans are connected in series. A display card module comprising: a circuit board having a connection interface and a heat generating component; A heat dissipating component is disposed on the circuit board, the heat dissipating component includes: a heat sink disposed on the heating element, the heat sink having a plurality of heat dissipating fins, and forming a plurality of heat dissipating between the heat dissipating fins Channels, the heat dissipation channels corresponding to the connection interface; and a plurality of centrifugal fans spaced apart from the other side of the heat sink relative to the connection interface and having the same axial direction, each of the centrifugal fans having an air inlet and a An air outlet is adjacent to the heat dissipation passages, the air outlet is disposed on the other side of the centrifugal fan opposite to the heat sink, and each of the centrifugal fans sucks the airflow in the heat dissipation passages through the air inlet, and then It is discharged through the air outlet. The display card module of claim 6, further comprising an air hood having a first opening and a second opening, wherein the heat sink and the centrifugal fan are disposed in the air hood The first opening corresponds to the heat dissipation channels of the heat sink, and the second opening corresponds to the air outlet of the centrifugal fan. The display card module of claim 7, wherein the air guiding cover comprises an upper cover, a side cover and a baffle, the first opening is disposed on the upper cover, and the second opening is disposed on the side cover And the upper cover corresponds to the heat sink, and the side cover corresponds to the air outlets, and the upper cover and the side cover are connected to each other by the deflector. The display card module of claim 6, wherein the centrifugal fans are coaxially disposed. The display card module of claim 6, wherein the centrifugal fans are connected in series.