Display card assembly

Abstract

The present application provides a display card assembly, which includes a bracket, a display card module, a first fin set, a centrifugal fan, a second fin set, a heat pipe set and an axial flow fan. The display card module is assembled to the bracket and has at least one heat source. The first fin set is assembled to the bracket and is in thermal contact with the heat source. The centrifugal fan is arranged beside the first fin set to generate a first airflow to dissipate heat from the first fin set. The second fin set is assembled to the bracket, and the first fin set and the second fin set are located on opposite sides of the centrifugal fan. The heat pipe set is in thermal contact between the heat source and the second fin set. The axial flow fan is arranged on the second fin set to generate a second airflow to dissipate heat from the second fin set, wherein the first airflow and the second airflow are separated from each other, and the second airflow passes through the bracket and the display card module.

Description

Technical Field

[0001] This invention relates to a display card assembly, and more particularly to a display card assembly used in a computer. Background Technology

[0002] With the advancement of the video game industry, games such as Virtual Reality and Augmented Reality have become increasingly popular, leading to higher performance requirements for dedicated computer graphics cards and increased heat generation from them.

[0003] Currently, the heat dissipation design of discrete graphics cards can be roughly divided into heat dissipation systems based on axial fans and heat dissipation systems based on centrifugal fans. Generally speaking, the motherboard of the graphics card is located below the fan. However, the airflow generated by the axial fan flows out from below the fan and directly hits the motherboard below the axial fan, causing the airflow to change direction and escape by compression. When the airflow changes direction, it will generate greater resistance, thereby reducing the heat dissipation efficiency.

[0004] On the other hand, the airflow generated by the centrifugal fan flows out from the side of the fan, so the heat sink fins are moved to the side of the centrifugal fan. However, the centrifugal fan is placed at a position far from the air outlet, which makes the heat sink fins required by the centrifugal fan longer. When the airflow generates greater flow resistance, it reduces the heat dissipation efficiency.

[0005] Based on the above, how to increase the heat dissipation efficiency of discrete graphics cards to meet their heat dissipation requirements is a direction that those skilled in the art need to strive for. Summary of the Invention

[0006] This invention relates to a graphics card component that uses a centrifugal fan and its associated cooling system in combination with an axial fan and its associated cooling system for heat dissipation, thereby reducing the problem of excessive fan resistance and providing better heat dissipation efficiency for the graphics card module.

[0007] According to an embodiment of the present invention, a graphics card assembly includes a bracket, a graphics card module, a first fin group, a centrifugal fan, a second fin group, a heat pipe assembly, and an axial fan. The graphics card module is assembled to the bracket and has at least one heat source. The first fin group is assembled to the bracket and is in thermal contact with the heat source. The centrifugal fan is disposed next to the first fin group to generate a first airflow to dissipate heat from the first fin group. The second fin group is assembled to the bracket, and the first fin group and the second fin group are located on opposite sides of the centrifugal fan. The heat pipe assembly is in thermal contact between the heat source and the second fin group. The axial fan is disposed on the second fin group to generate a second airflow to dissipate heat from the second fin group, wherein the first airflow and the second airflow are separated from each other, and the second airflow passes through the bracket and the graphics card module.

[0008] Based on the above, the graphics card assembly of the present invention simultaneously comprises a heat dissipation system primarily composed of a centrifugal fan and a heat dissipation system primarily composed of an axial fan. The centrifugal fan is moved to the center of the graphics card module, shortening the length of its associated heatsink fins to directly dissipate heat from the graphics card module. Simultaneously, an axial fan, positioned away from the graphics card motherboard, transfers heat generated by the heat source to areas outside the motherboard via heat pipes. The airflow generated by the axial fan dissipates this heat, passing directly through and exiting the graphics card assembly, thereby reducing airflow resistance and increasing heat dissipation efficiency. Here, the airflow generated by the axial fan and the airflow generated by the centrifugal fan are separated. In other words, the graphics card assembly of the present invention is based on a composite heat dissipation layout, correspondingly arranging the two types of cooling fans. This not only reduces the flow resistance of the airflow generated by the fans but also improves the heat dissipation efficiency of the graphics card assembly. Attached Figure Description

[0009] The accompanying drawings are included to further illustrate the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0010] Figure 1 This is a schematic diagram of a display card assembly according to an embodiment of the present invention;

[0011] Figure 2A for Figure 1 Exploded view of the graphics card components;

[0012] Figure 2B for Figure 1 An exploded view of the graphics card components from another perspective;

[0013] Figure 3 for Figure 1 A cross-sectional view of the graphics card components.

[0014] Explanation of icon numbers

[0015] 100: Graphics card components;

[0016] 110: Bracket;

[0017] 111: First end;

[0018] 112: Second end;

[0019] 113: The first opening;

[0020] 114: The third opening;

[0021] 115: Extension;

[0022] 115a: Heat dissipation holes;

[0023] 120: Display card module;

[0024] 121: Base plate;

[0025] 121a: Second opening;

[0026] 122: Circuit board;

[0027] 122a: First page;

[0028] 122b: Second page;

[0029] 123: Thermal conductive components;

[0030] 124: Chip;

[0031] 130: Centrifugal fan;

[0032] 140: Axial fan;

[0033] 150: First fin group;

[0034] 160: Second fin group;

[0035] 170: Heat pipe assembly;

[0036] 180: Air guide cover;

[0037] 181: First air inlet;

[0038] 182: Second air inlet;

[0039] 183: Windbreak;

[0040] 183a: Opening;

[0041] 184: Fixing part;

[0042] 185: Fixing plate;

[0043] F1: First airflow;

[0044] F2: Second airflow. Detailed Implementation

[0045] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element references are used in the drawings and description to denote the same or similar parts.

[0046] Figure 1 This is a schematic diagram of a graphics card assembly according to an embodiment of the present invention. The internal structural configuration of the graphics card assembly 100 is shown to be clearly illustrated. Figure 1 The air guide shroud 180 is shown with a dashed line. Please refer to it. Figure 1In this embodiment, the graphics card assembly 100 includes a bracket 110, a graphics card module 120, a centrifugal fan 130, an axial fan 140, a first fin group 150, a second fin group 160, a heat pipe assembly 170, and an air guide shroud 180. The graphics card module 120 is assembled to the bracket 110. The centrifugal fan 130 and the axial fan 140 are fixed inside the air guide shroud 180, and the air guide shroud 180 is assembled to the bracket 110. The axial fan 140 and the centrifugal fan 130 are disposed on opposite sides of the graphics card module 120. The first fin group 150 and the second fin group 160 are assembled to the bracket 110. The second fin group 160 is disposed below the axial fan 140, and the first fin group 150 and the second fin group 160 are disposed on opposite sides of the centrifugal fan 130. That is, the centrifugal fan 130 is disposed between the first fin group 150 and the second fin group 160. The heat pipe assembly 170 passes through the second fin assembly 160 and extends from the second fin assembly 160 to between the centrifugal fan 130 and the graphics card module 120.

[0047] As described above, the bracket 110 has a first end 111 and a second end 112, with the first end 111 extending outwards to form an extension 115. The display card assembly 100 of the present invention is assembled into the chassis of a desktop computer device (not shown) using the extension 115 of the bracket 110. The extension 115 has a plurality of heat dissipation holes 115a, a first fin group 150 is disposed beside the plurality of heat dissipation holes 115a, and a second fin group 160 is disposed at the second end 112 of the bracket 110. The first fin group 150 and the second fin group 160 each have a plurality of heat dissipation fins, wherein the plurality of heat dissipation fins of the first fin group 150 are perpendicular to the plurality of heat dissipation fins of the second fin group 160.

[0048] Figure 2A for Figure 1 An exploded view of the graphics card components. Figure 2B for Figure 1 An exploded view of the graphics card components from another perspective. Please also refer to... Figure 2A and Figure 2BThe graphics card module 120 includes a base plate 121, a circuit board 122, a heat-conducting component 123, and multiple chips 124. The base plate 121 is assembled onto a bracket 110, and the circuit board 122 is disposed on the base plate 121. That is, the bracket 110 and the base plate 121 are located on opposite sides of the circuit board 122. The circuit board 122 has opposing first surfaces 122a and second surfaces 122b, with the first surface 122a facing the bracket 110 and the second surface 122b facing the base plate 121. Multiple chips 124 are disposed on the first surface 122a of the circuit board 122, and the heat-conducting component 123 is disposed on and abuts against the multiple chips 124. Here, these chips 124 are considered heat sources for the graphics card module 120. The base plate 121 also has multiple second openings 121a, which are located below the second fin assembly 160 and in the flow path of the airflow generated by the axial fan 140.

[0049] As described above, the bracket 110 has a first opening 113 disposed at the second end 112 of the bracket 110, and a second fin assembly 160 is disposed on the first opening 113, with a portion of the second fin assembly 160 housed within the first opening 113. In this embodiment, the orthographic projections of the plurality of second openings 121a on the plane of the bracket 110 at least partially overlap with the first opening 113, but do not overlap with the orthographic projections of the circuit board 122 on the plane of the bracket 110. Specifically, the orthographic projections of the circuit board 122 on the plane of the bracket 110 are located outside the range of the orthographic projections of the plurality of second openings 121a on the plane of the bracket 110, and the orthographic projections of the circuit board 122 on the plane of the bracket 110 are located outside the first opening 113, that is, the circuit board 122 does not extend between the first opening 113 and the plurality of second openings 121a.

[0050] In detail, the air guide shroud 180 has a first air inlet 181 and a second air inlet 182, wherein the first air inlet 181 is disposed above the axial fan 140, and the second air inlet 182 is disposed above the centrifugal fan 130. The axial fan 140 is fixed to the fixing part 184 of the air guide shroud 180, and the centrifugal fan 130 is locked inside the air guide shroud 180 by the fixing plate 185 of the air guide shroud 180. The air guide shroud 180 also has a wind deflector 183 disposed between the first air inlet 181 and the second air inlet 182, and extends toward the centrifugal fan 130 to surround the centrifugal fan 130. The wind deflector 183 has an opening 183a, wherein the opening 183a faces the first fin assembly 150. The support 110 also has a third opening 114, which is located at the first end 111. The first fin assembly 150 and the centrifugal fan 130 are disposed on the third opening 114, and the first fin assembly 150 abuts against the heat conductor 123. The heat conductor 123 and a plurality of chips 124 are disposed below the third opening 114. The heat pipe assembly 170 extends from the second fin assembly 160 to the third opening 114 and abuts against the heat conductor 123. That is, one end of the heat pipe assembly 170 passes through the second fin assembly 160, and the other end is thermally connected to the heat conductor 123. The centrifugal fan 130 is disposed above the heat conductor 123 and part of the heat pipe assembly 170. Therefore, a portion of the heat generated by the chips 124 is transferred to the first fin assembly 150 via the heat conductor 123, and another portion of the heat generated is transferred to the second fin assembly 160 via the heat conductor 123 and the heat pipe assembly 170.

[0051] Figure 3 for Figure 1 A cross-sectional view of the graphics card components. Please refer to... Figure 3 The graphics card assembly 100 of the present invention has a composite heat dissipation layout, including a heat dissipation system mainly composed of a centrifugal fan 130 and a heat dissipation system mainly composed of an axial fan 140. Specifically, the centrifugal fan 130 is located below the second air inlet 182. The first airflow F1 enters through the second air inlet 182, passes through the centrifugal fan 130, and then moves towards the first fin group 150. Finally, it flows out through the heat dissipation hole 115a and dissipates from the graphics card assembly 100. That is to say, after the first airflow F1 enters the centrifugal fan 130 axially through the second air inlet 182, it will turn and blow towards the first fin group 150 radially along the centrifugal fan 130, so it will not pass through the bracket 110 and the graphics card module 120. On the other hand, the axial fan 140 is located below the first air inlet 181. The second airflow F2 enters from the first air inlet 181 along the axial direction without changing direction, and is continuously blown from the axial direction of the axial fan 140 toward the second fin group 160. Finally, it flows out from the second opening 121a below the second fin group 160 and dissipates from the display card assembly 100.

[0052] In detail, the first airflow F1 passing through the centrifugal fan 130 will be turned and parallel to the centrifugal fan 130. Since the baffle 183 is blocked between the centrifugal fan 130 and the axial fan 140, and the opening 183a faces the first fin assembly 150, the first airflow F1 will move towards the first fin assembly 150 after leaving the centrifugal fan 130, and will not move towards the direction of the axial fan 140. On the other hand, the second airflow F2 passing through the axial fan 140 will be perpendicular to the axial fan 140, so the second airflow F2 will not move towards the centrifugal fan 130, so the first airflow F1 and the second airflow F2 will not meet each other and affect each other.

[0053] Furthermore, in this embodiment, the centrifugal fan 130 is positioned in the middle of the graphics card assembly 100, thus shortening the distance between the centrifugal fan 130 and the heat dissipation hole 115a. In other words, the heat dissipation fins of the first fin group 150 only require one-third of the length of the graphics card assembly 100. When the heat dissipation fins of the first fin group 150 are shortened, the flow resistance generated after the first airflow F1 enters the first fin group 150 is reduced, making it easier for the first airflow F1 to escape from the heat dissipation hole 115a and thus increasing the heat dissipation effect. On the other hand, the second airflow F2 passes through the axial fan 140 and through the second fin group 160 to the second opening 121a of the base plate 121. Since there are no other objects between the second fin group 160 and the second opening 121a, the second airflow F2 will not experience significant flow resistance due to collisions with other objects during its flow path, thereby increasing the heat dissipation efficiency of the second airflow F2.

[0054] In summary, the graphics card assembly of the present invention has a composite heat dissipation system, including a centrifugal fan heat dissipation system and an axial fan heat dissipation system. The length of the heat sink fins in the centrifugal fan heat dissipation system is shortened to increase the heat dissipation efficiency of the centrifugal fan. Furthermore, openings are added to the airflow path through the axial fan to allow the airflow to directly dissipate to the outside of the graphics card assembly, reducing impedance and increasing heat dissipation efficiency. That is, the present invention simultaneously improves both heat dissipation systems and reduces fan flow resistance, thereby improving the heat dissipation efficiency of the graphics card assembly.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A graphics card assembly, characterized in that, include: support; The graphics card module is assembled to the bracket and has at least one heat source; The first fin assembly is assembled to the bracket and in thermal contact with the heat source; A centrifugal fan is positioned next to the first fin group to generate a first airflow to dissipate heat from the first fin group. The second fin group is assembled to the bracket, and the first fin group and the second fin group are located on opposite sides of the centrifugal fan; The heat pipe assembly is in thermal contact with the heat source and the second fin assembly; and An axial fan is configured on the second fin group to generate a second airflow to dissipate heat from the second fin group, wherein the first airflow and the second airflow are separated from each other, and the second airflow passes through the bracket and the graphics card module.

2. The graphics card assembly according to claim 1, characterized in that, The bracket has a first opening, and the graphics card module has at least one second opening. Corresponding to the first opening, the axial fan and the second fin group are located on the first opening and the at least one second opening. The second airflow flows out of the graphics card assembly through the axial fan, the second fin group, the first opening and the at least one second opening in sequence.

3. The graphics card assembly according to claim 2, characterized in that, The graphics card module further includes a base plate and a circuit board. The at least one heat source is a plurality of chips of the graphics card module disposed on the circuit board. The base plate is assembled to the bracket. The circuit board is disposed on the base plate and located between the bracket and the base plate. The heat source is located on the side of the circuit board facing the bracket. The graphics card module is opposite to the centrifugal fan and the axial fan through the bracket. The base plate has the at least one second opening.

4. The graphics card assembly according to claim 3, characterized in that, The first opening and the at least one second opening are located outside the scope of the circuit board.

5. The graphics card assembly according to claim 3, characterized in that, The orthographic projection of the at least one second opening onto the plane of the bracket overlaps at least partially with the first opening.

6. The graphics card assembly according to claim 1, characterized in that, The graphics card assembly also includes an air guide shroud covering the axial fan and the centrifugal fan, with the air guide shroud's baffle portion located between the axial fan and the centrifugal fan to separate the first airflow from the second airflow.

7. The graphics card assembly according to claim 6, characterized in that, The air guide shroud also has a first air inlet and a second air inlet. The first air inlet is located above the axial fan, and the second air inlet is located above the centrifugal fan. The windproof portion is located between the first air inlet and the second air inlet and extends toward the centrifugal fan to surround the centrifugal fan.

8. The graphics card assembly according to claim 1, characterized in that, The bracket also has multiple heat dissipation holes, and the first fin group is disposed next to the multiple heat dissipation holes. The first airflow flows out of the graphics card assembly through the centrifugal fan, the first fin group and the multiple heat dissipation holes in sequence.

9. The graphics card assembly according to claim 8, characterized in that, The bracket has an extension, the plurality of heat dissipation holes are located on the extension, and the graphics card assembly is adapted to be assembled to the chassis of a computer device via the extension.

10. The graphics card assembly according to claim 1, characterized in that, The support also has a third opening through which the at least one heat source makes thermal contact with the first fin assembly.

11. The graphics card assembly according to claim 1, characterized in that, The direction in which the first airflow flows into the centrifugal fan is the same as the direction in which the second airflow flows into the axial fan.

12. The graphics card assembly according to claim 1, characterized in that, The direction in which the first airflow exits the graphics card assembly is perpendicular to the direction in which the second airflow exits the graphics card assembly.

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