CN201039650Y - Heat sink for video control card - Google Patents

Abstract

A heat radiator for video signal control card is composed of a base plate with the first and the second regions, at least one low-heat element on the first region, and a high-heat element on the second region, and is composed of a liquid cooling seat with a base plate, a casing, several heat radiating fins, and several partition plates. Therefore, the liquid cooling design can be used for dissipating the heat of high and low heating elements to achieve better heat dissipation effect.

Description

Cooling device for video control card

【Technical field】

The utility model relates to a heat dissipation device, in particular to a heat dissipation device for a video control card which is installed on a video control card and is used for dissipating heat generated by a heat dissipation element.

【Background technique】

For example, electronic equipment such as computer hosts, LCD screens, plasma TVs, etc., during operation, some electronic components will generate high temperature, so at least one heat dissipation device must be used to force heat dissipation. In recent years, the industry has successively developed many A heat dissipation device can be respectively installed on different electronic parts, and the following is an explanation for a heat dissipation device installed on a video control card (Video Graphics Array, VGA for short) in a host computer.

As shown in Figures 1 and 2, a conventional cooling device 11 is mounted on a video control card 1, which includes a horizontal substrate 12, a graphics processor (GPU) fixedly mounted on the substrate 12. Graphic Processing Unit (GPU for short) 13, and several memories 14 installed on the substrate 12 at intervals. The cooling device 11 is used to dissipate heat from the GPU 13 and the memory 14 , and includes: a cooling plate 111 , several cooling fins 112 , and a fan 113 . The heat sink 111 is attached to the graphics processor 13 and the memory 14 . The cooling fins 112 extend upward from the cooling plate 111 at intervals. The fan 113 is installed on the heat dissipation plate 111 and is located on one side of the heat dissipation fins 112 , and can blow air to the heat dissipation fins 112 to dissipate heat.

Although the above-mentioned cooling device 11 can dissipate heat, it can only use the flow of air to dissipate heat, and it is difficult to quickly take away a large amount of heat. Especially, the graphics processor 13 will generate more heat when it is running, and the ambient temperature is also low. It will rise with it, so it will relatively reduce the heat dissipation rate, so the heat dissipation effect of simply using an air-cooled heat dissipation device is poor.

【Content of utility model】

The purpose of the utility model is to provide a heat dissipation device for a video control card with better heat dissipation efficiency.

In order to achieve the above object, the utility model provides a heat dissipation device installed on a video control card, the video control card includes a substrate with a first area and a second area on the surface, at least one A low heating element on the first area, and a high heating element installed on the second area of the substrate, and the heat dissipation device includes a liquid cooling seat fixedly installed on the substrate, the liquid cooling seat has a A base plate for absorbing heat on the low heating element and a high heating element, a cover on the side of the base plate away from the base plate and a seat shell part whose peripheral edge is sealed and bonded to the base plate, several pieces are respectively arranged on the base plate and the seat shell part The heat dissipation fins between them, and several partitions spaced from each other and connected between the seat bottom plate and the seat shell, the partitions are correspondingly located on the parts that are close to the high heating elements, and the seat bottom, the seat shell and the The baffles jointly define a liquid flow space containing cooling fins, and the liquid flow space has a one-way channel that bends through the baffles, and the seat shell has a cooling liquid entering the liquid flow space. There is also a water inlet that flows into one end of the one-way channel, and a water outlet that allows the heated liquid flowing out of the other end of the one-way channel to be discharged from the liquid flow space. The above-mentioned liquid-cooled design can be used to dissipate heat from high and low heating elements to achieve better heat dissipation.

The beneficial effect of the utility model is that: the video control card is equipped with a liquid cooling seat, which can quickly absorb and take away the heat of the heating element through the cooling method of the liquid circulation, and it is more formed on the high heating element. To the channel to enhance heat dissipation, so the utility model has a better heat dissipation effect.

【Description of drawings】

Fig. 1 is a perspective view of a conventional cooling device separated from a video control card;

Fig. 2 is a schematic side view of the conventional cooling device;

Fig. 3 is a three-dimensional exploded view of a preferred embodiment in which the heat dissipation device of the present invention is separated from a video control card;

Fig. 4 is a schematic longitudinal section of the preferred embodiment; and

FIG. 5 is a schematic cross-sectional view of the preferred embodiment.

【Detailed ways】

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail:

As shown in Fig. 3, Fig. 4 and Fig. 5, the preferred embodiment of the heat dissipation device of the present invention is installed on a video control card (Video Graphics Array, referred to as VGA) 2, and the video control card 2 includes a surface with a The substrate 21 of the first area 211 and a second area 212, several low heating elements 22 respectively installed on the first and second areas 211, 212 of the substrate 21, and a second area 212 installed on the substrate 21 The high heating element 23 on the top, in this embodiment, the low heating element 22 with less heat generation can be components such as a memory card or a heating chip, and the high heating element 23 with more heat generation is a graphics processing unit (Graphic Processing Unit). , referred to as GPU), of course, the type, quantity and distribution position of the low heating elements 22 can also be changed, and even can be installed only on the first area 211, and the design is not limited to this embodiment. In addition, the heat dissipation device of the present utility model will be connected with a heat dissipation unit (not shown in the figure). A cooling fan (not shown), but the structure of the cooling unit and the fan will not be described in detail here.

And this cooling device is used for dissipating the heat of high and low heating elements 23, 22, and includes: a liquid cooling seat 3 fixedly installed on the base plate 21, an air cooling element adjacent to the side of the liquid cooling seat 3 4, and a pump 5 fixedly installed on the air cooling element 4.

The liquid-cooled seat 3 has a base plate 31 that is attached to the low heating element 22 and the high heating element 23 and is used to absorb heat, and a cover is on the side of the base plate 31 away from the base plate 21 and the peripheral edge is sealed and bonded to the base plate 31 The seat shell part 32, several pieces of cooling fins 33 extending from the seat bottom plate 31 to the seat shell part 32 at intervals from each other, and several partition plates 34 spaced apart from each other and plugged and fixed between the seat bottom plate 31 and the seat shell part 32 . The seat base 31 , the seat shell 32 and the partition 34 jointly define a liquid flow space 35 for accommodating the cooling fins 33 . The quantity and arrangement direction of the heat dissipation fins 33 and spacers 34 are not limited by this embodiment.

The seat shell 32 has a rectangular seat top wall 321 spaced opposite to the seat bottom 31 , and a seat peripheral wall 322 extending from the periphery of the seat top wall 321 toward the seat bottom 31 and surrounding the cooling fins 33 . The partitions 34 are inserted between the seat bottom plate 31 and the seat top wall 321 at intervals from each other, and are correspondingly located on the position close to the high heating element 23, so that the liquid flow space 35 has a section that bends through the The one-way passage 351 between the partitions 34, and the seat shell part 32 has a water inlet 323 for cooling liquid to enter the liquid flow space 35 and flow into one end of the one-way passage 351, and another for the flow out of the one-way passage 351 The heated liquid at one end is discharged from the water outlet 324 of the liquid flow space 35 , so that the one-way channel 351 can force the liquid to pass through the area on the high heating element 23 to take away a large amount of heat emitted by the high heating element 23 .

The air cooling element 4 has an extension plate 41 protruding from one side of the base plate 31 to the outside of the shell element 32 , and several cooling fins 42 extending from the extension plate 41 to a side away from the base plate 21 at intervals. The air cooling element 4 in this embodiment is adjacent to the second area 212 of the substrate 21 , of course, the position can also be changed in design, and the present embodiment is not limited thereto.

In this embodiment, the extension plate 41 and the cooling fins 42 are made of a metal material with good thermal conductivity together with the seat bottom plate 31 and the cooling fins 33. Of course, in terms of design, the air cooling unit 4 can also be combined with the liquid cooling seat 3 is separated to become an independent entity, so the design is not limited to this embodiment. In addition, the housing member 32 and the partition plate 34 are also integrally made of a metal material with good thermal conductivity, which can be used to absorb heat, and will not be described here.

The pump 5 is fixedly installed on the air-cooling element 4, and has an inlet 51 connected to the water outlet 324 for the heating liquid to enter, a pumping-out end 52 for heating the liquid, and a pumping-in port 51 and the pumping-in port 52. Circuit board 53 above drain port 52 . The circuit board 53 is located on a side away from the air cooling element 4 to avoid being affected by high temperature. Since the pump 5 is a generally commercially available small pump, its structure is not the focus of the present invention, so it will not be described in detail here.

Connect the water inlet 323 of the liquid cooling seat 3 and the pumping end 52 of the pump 5 to the heat dissipation unit respectively, and after the above components are assembled, fill the heat dissipation unit, the liquid cooling seat 3 and the pump 5 with water or refrigerant, etc. Medium cooling liquid, when in use, the high and low heating elements 23, 22 will conduct heat to the liquid cooling seat 3, allowing the liquid to perform heat exchange and heat up, when the driving pump 5 is running, the cooling liquid in the cooling unit will be sent to Enter the liquid cooling seat 3, and let the cooling liquid enter the liquid flow space 35, and after flowing back through the one-way channel 351, it will heat up and become a heating liquid, and then it will be transported to the heat dissipation unit through the pump 5, and then supplied for cooling after heat dissipation and cooling liquid for continuous cooling.

It should be further explained that in this embodiment, the video control card 2 is placed flat and the liquid cooling seat 3 is installed above the high and low heating elements 23, 22 as an example for illustration. It is also possible to reverse the video control card 2 up and down, so that the liquid cooling seat 3 is located under the high and low heating elements 23,22. In addition, if the video control card 2 is placed upright, then this embodiment will be installed on the sides of the high and low heating elements 23, 22 correspondingly, so the utility model is not limited in the installation direction. This example. In addition, in terms of design, the liquid-cooled seat can also be divided into two independent seats (not shown in the figure), and connected by a connecting pipe (not shown in the figure), and the two seats will be respectively attached to the second The first area 211 and the second area 212 will not be described in detail here.

As can be seen from the above description, the heat dissipation device of the present invention is designed to install a liquid cooling seat 3 on the high and low heating elements 23, 22 of the video control card 2, so as to cool quickly through the liquid circulation. Absorb and take away the heat of the heating elements 23, 22, and form one-way passages 351, 751 on the high heating elements 23 corresponding to larger heat generation, forcing the liquid to bend through in an all-round way to take away a large amount of heat. Therefore, the cooling device of the utility model can quickly dissipate the heat of the high and low heating elements 23, 22 to have a better heat dissipation effect, so the purpose of the utility model can indeed be achieved.

Claims (6)

1. A heat dissipation device for a video control card, the video control card comprising a substrate having a first area and a second area on the surface, at least one low heat generating element mounted on the first area of the substrate, and a mounting A high heating element on the second region of the substrate, characterized by: The heat dissipation device includes a liquid-cooled seat fixedly installed on the base plate, the liquid-cooled seat has a base plate attached to the low heating element and the high heating element for absorbing heat, and a cover on the base plate away from the base plate. One side and the peripheral edge of the seat shell are sealed and combined on the seat bottom plate, several pieces of heat dissipation fins are respectively arranged between the seat bottom plate and the seat shell piece, and several pieces of partitions are spaced apart from each other and connected between the seat bottom plate and the seat shell piece. The baffle is correspondingly located on the part close to the high heating element, and the seat bottom plate, the seat shell and the baffle jointly define a liquid flow space for accommodating the cooling fins, and the liquid flow space has a section that bends through The one-way channel between the partitions, the seat shell part has a water inlet for the cooling liquid to enter the liquid flow space and flow into one end of the one-way channel, and one for the heating liquid flowing out of the other end of the one-way channel from the liquid flow Water outlet for space discharge. 2. The heat dissipation device of the video control card according to claim 1, wherein the heat dissipation device further comprises an air cooling element adjacent to the side of the liquid cooling seat, and the air cooling element has a piece formed by one side of the base plate The same body protrudes from the extension plate outside the seat shell, and several pieces of cooling fins extend from the extension plate to the side away from the base plate at intervals. 3. The cooling device of the video control card as claimed in claim 2, characterized in that: the cooling device also includes a pump fixedly installed on the air-cooling element, the pump has a water outlet connected to the water outlet and for the heating liquid to enter An inlet end, and a draw end for drawing warming liquid out. 4. The heat dissipation device of a video control card as claimed in claim 3, wherein the pump further has a circuit board on a side away from the air cooling element. 5. The heat dissipation device for video control card as claimed in claim 1, characterized in that: the seat shell of the liquid cooling seat also has a seat top wall spaced opposite to the seat bottom plate, and a peripheral edge of the seat top wall The seat peripheral wall extending toward the seat bottom plate, the spacers are inserted between the seat bottom plate and the seat top wall at intervals. 6. The heat dissipation device for a video control card according to claim 1 or 5, wherein the heat dissipation fins of the liquid cooling seat all extend from the bottom plate of the seat toward the shell.

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