FPGA exchange board cold plate

Abstract

The utility model discloses a FPGA exchange board cold plate, including the strip boss, the inner runner is located inside the strip boss, the hole of going in and out, the both ends of inner runner each vertical intercommunication has a hole of going in and out, and the opening direction of two holes of going in and out points to the same parallel direction, wherein, the hole of going in and out passes through first linear cavity, second linear cavity and thereby communicates with the inner runner in proper order, and the axis of hole of going in and out, first linear cavity, second linear cavity is two two vertical each other, and the inner diameter of inner runner, first linear cavity, second linear cavity is equal each other, and the inner diameter of hole of going in and out is greater than the inner diameter of inner runner, and the hole of going in and out includes first cylindrical cavity, second cylindrical cavity, round table cavity along the axis one -way in proper order, and round table cavity communicates with first linear cavity, and the inner diameter of first cylindrical cavity, second cylindrical cavity, round table cavity is gradually small. Adopt the utility model to pass through the taper design of hole of going in and out and equal -diameter runner, make the cooling liquid flow smooth, reduce the processing difficulty simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation in electronic devices, specifically to a cold plate for an FPGA switching board. Background Technology

[0002] The FPGA switchboard cold plate is a core liquid-cooled heat dissipation component adapted to field-programmable gate array (FPGA) switchboards, used to solve the heat dissipation problem of high-density, high-power FPGA switchboards. By bonding with high heat flux density devices such as FPGA chips, it utilizes the cooling liquid in the internal flow channels to efficiently conduct heat. It features a highly adaptable structure and a liquid cooling circuit with high thermal conductivity, and can replace or supplement traditional air cooling, ensuring the stable operation of related equipment in data centers, communication equipment, and other fields.

[0003] The internal flow channels of existing FPGA switching board cold plates mostly adopt complex structures, which have some limitations. These include high precision requirements and high cost in processing complex flow channels, easy retention of impurities that can cause blockages, high maintenance difficulty, and difficulty in meeting the heat dissipation requirements of high-performance equipment. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a cold plate for an FPGA switching board.

[0005] To solve the above problems, this utility model provides a cold plate for an FPGA switching board. To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problems is as follows: An FPGA switching board cold plate includes: a strip-shaped boss; an inner flow channel located inside the strip-shaped boss; and inlet / outlet holes, each end of the inner flow channel being perpendicularly connected to an inlet / outlet hole, the opening directions of the two inlet / outlet holes pointing in the same parallel direction; wherein, the inlet / outlet holes are connected to the inner flow channel through a first straight cavity and a second straight cavity in sequence, and the axes of the inlet / outlet holes, the first straight cavity, and the second straight cavity are all perpendicular to each other; the inner diameters of the inner flow channel, the first straight cavity, and the second straight cavity are all equal, and the inner diameter of the inlet / outlet hole is larger than the inner diameter of the inner flow channel; the inlet / outlet hole includes a first cylindrical cavity, a second cylindrical cavity, and a frustum cavity in a unidirectional direction along the axis, the frustum cavity being connected to the first straight cavity, and the inner diameters of the first cylindrical cavity, the second cylindrical cavity, and the frustum cavity gradually decreasing.

[0006] As a further improvement of this utility model, the inner flow channel and the inlet / outlet hole are respectively located on both sides of the plane where the top surface of the strip-shaped boss is located.

[0007] As a further improvement of this utility model, the two ends of the inner flow channel include port segments that are perpendicularly connected to the second straight tube cavity, and the axes of the two port segments coincide on the same spatial straight line.

[0008] As a further improvement of this utility model, the inner flow channel includes several arc segments, and the radius of curvature corresponding to the arc segments is not less than twice the inner diameter of the inner flow channel.

[0009] As a further improvement of this utility model, the inner flow channel is serpentine and contains at least three pairs of channel segments with opposite flow directions, and the sets of opposite channel segments are arranged alternately.

[0010] As a further improvement of this utility model, in the inner flow channel, the shortest lateral distance between each pair of adjacent channel segments with opposite flow directions along the direction perpendicular to the axis of the channel segment is equal to the inner diameter of the inner flow channel.

[0011] As a further improvement of this utility model, the ratio of the axial length to the inner diameter of the first straight cavity is not greater than two, and the ratio of the axial length to the inner diameter of the second straight cavity is not greater than two.

[0012] As a further improvement of this utility model, one side of the FPGA switching board cold plate has a flat surface, and the flat surface and the strip-shaped protrusion are respectively located on the front and back sides of the FPGA switching board cold plate.

[0013] As a further improvement of this utility model, the outer surface of the FPGA switching board cold plate is provided with a black anodized film.

[0014] The beneficial technical effects of using the FPGA switching board cold plate of this application are: The cooling liquid experiences less flow resistance and is less prone to clogging. Because the inner diameter of the inlet and outlet holes is larger than that of the inner flow channel, and the first cylindrical cavity, the second cylindrical cavity, and the frustum cavity with gradually decreasing inner diameters are arranged along the axis, combined with the design that the inner diameters of the first straight pipe cavity, the second straight pipe cavity, and the inner flow channel are equal, the cross-sectional transition of the liquid is smooth when it enters and exits, reducing turbulence and impurity retention, and lowering the risk of clogging.

[0015] The processing difficulty and cost have also been reduced to some extent. Because the structural design of the inlet and outlet holes, the first straight tube cavity, and the second straight tube cavity with their axes perpendicular to each other is simple and regular, there is no need for complex irregular transition structures, making it easier to achieve the required processing accuracy, thereby reducing processing costs and production difficulty.

[0016] The connection between the two straight pipe sections and the inner flow channel allows the cooling liquid to enter the core heat dissipation area of ​​the inner flow channel quickly and evenly. Furthermore, the matching inner diameters of each key flow channel ensure stable liquid flow, improve the continuity and efficiency of heat transfer, and meet the heat dissipation requirements of the FPGA switching board. Ultimately, this also results in relatively stable heat transfer efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of one embodiment of the present utility model; Figure 2 This is a perspective view of one embodiment of the present utility model; Figure 3 This is a side view of one embodiment of the present invention; Figure 4 This is a cross-sectional view (AA) of one embodiment of the present invention; Figure 5 This is a BB cross-sectional view of one embodiment of the present invention; Figure 6 This is a CC cross-sectional view of one embodiment of the present invention.

[0019] 1-Inlet / outlet; 101-First cylindrical cavity; 102-Second cylindrical cavity; 103-Frustum cavity; 2-Flat surface; 3-Strip boss; 4-Inner flow channel; 401-Port segment; 402-Arc segment; 5-First straight cavity; 6-Second straight cavity. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to specific embodiments: To achieve the purpose of this utility model, please refer to Figures 1 to 6 A cold plate for an FPGA switching board includes: a strip-shaped boss 3; an inner flow channel 4 located inside the strip-shaped boss 3; and inlet / outlet holes 1, with each end of the inner flow channel 4 perpendicularly connected to an inlet / outlet hole 1, the opening directions of the two inlet / outlet holes 1 pointing in the same parallel direction. The inlet / outlet holes 1 connect to the inner flow channel 4 sequentially through a first straight cavity 5 and a second straight cavity 6, and the axes of the inlet / outlet holes 1, the first straight cavity 5, and the second straight cavity 6 are all perpendicular to each other. The inner diameters of the inner flow channel 4, the first straight cavity 5, and the second straight cavity 6 are all equal, while the inner diameter of the inlet / outlet holes 1 is larger than the inner diameter of the inner flow channel 4. The inlet / outlet holes 1 sequentially include a first cylindrical cavity 101, a second cylindrical cavity 102, and a frustum cavity 103 along their axial direction. The frustum cavity 103 connects to the first straight cavity 5, and the inner diameters of the first cylindrical cavity 101, the second cylindrical cavity 102, and the frustum cavity 103 gradually decrease.

[0021] The beneficial effects of adopting the above technical solution are as follows: by having an inner diameter of inlet / outlet 1 larger than that of inner flow channel 4, and by sequentially arranging a first cylindrical cavity 101, a second cylindrical cavity 102, and a frustum cavity 103 with gradually decreasing inner diameters along the axis of inlet / outlet 1, and by cooperating with the design that the inner diameters of the first straight tube cavity 5 and the second straight tube cavity 6 are equal to those of inner flow channel 4, the cross-sectional transition of the cooling liquid flow is smooth, reducing turbulence and impurity retention, lowering the risk of blockage, and at the same time, the structure is simple and regular, reducing the difficulty and cost of processing, ensuring stable liquid flow, and improving heat transfer efficiency.

[0022] like Figure 1 , Figure 3 As shown, in some other embodiments of this utility model, the inner flow channel 4 and the inlet / outlet hole 1 are respectively located on both sides of the spatial plane where the top surface of the strip-shaped boss 3 is located, that is, the center lines of the inner flow channel 4 and the inlet / outlet hole 1 do not coincide on the same spatial plane.

[0023] The beneficial effects of adopting the above technical solution are: to make the flow channel layout more reasonable, avoid mutual interference, optimize the flow path of coolant, thereby improving heat dissipation uniformity and structural stability.

[0024] like Figure 4 As shown, in some other embodiments of this utility model, the two ends of the inner flow channel 4 include port segments 401 that are perpendicularly connected to the second straight cavity 6, and the axes of the two port segments 401 coincide on the same spatial straight line. That is, the two port segments 401 extend in opposite directions.

[0025] The beneficial effects of adopting the above technical solution are: the axes of the port segments 401 at both ends coincide with the same straight line in space, ensuring that the cooling liquid enters symmetrically from both ends, achieving flow balance and avoiding flow deviation.

[0026] like Figure 4 As shown, in some other embodiments of this utility model, the inner flow channel 4 includes several arc segments 402, and the radius of curvature corresponding to the arc segments 402 is not less than twice the inner diameter of the inner flow channel 4.

[0027] The beneficial effects of adopting the above technical solution are: the arc segment 402 with a radius of curvature not less than twice the inner diameter effectively reduces flow resistance, prevents impurities from accumulating at the bend, and reduces the risk of blockage.

[0028] like Figure 4 As shown, in some other embodiments of this utility model, the inner flow channel 4 is a serpentine bend, and its interior contains at least three pairs of channel segments with opposite flow directions, and the sets of reverse channel segments are arranged alternately.

[0029] The beneficial effects of adopting the above technical solution are: at least three pairs of reverse channel segments are arranged alternately, which can increase the heat exchange area and residence time, and improve heat dissipation efficiency.

[0030] like Figure 4 As shown, in some other embodiments of this utility model, in the inner flow channel 4, the shortest lateral distance between each pair of adjacent channel segments with opposite flow directions along the direction perpendicular to the axis of the channel segment is equal to the inner diameter of the inner flow channel 4.

[0031] The beneficial effects of adopting the above technical solution are: to make the flow channel layout compact and reasonable, reduce the flow dead zone, and optimize heat dissipation performance.

[0032] like Figure 6 As shown, in some other embodiments of this utility model, the ratio of the axial length to the inner diameter of the first straight cavity 5 is not greater than two, and the ratio of the axial length to the inner diameter of the second straight cavity 6 is not greater than two.

[0033] The beneficial effects of adopting the above technical solution are: shortening the flow channel length, reducing flow resistance and pressure drop, while reducing processing difficulty and improving production efficiency.

[0034] like Figure 2 As shown, in some other embodiments of this utility model, one side of the FPGA switching board cold plate has a flat surface 2, and the flat surface 2 and the strip-shaped protrusion 3 are respectively located on the front and back sides of the FPGA switching board cold plate.

[0035] The beneficial effects of adopting the above technical solution are: the flat surface 2 and the strip protrusion 3 are respectively located on the front and back of the cold plate, which makes it easy for the flat surface 2 to closely fit the heat source such as the FPGA chip and improve the heat conduction effect.

[0036] In some other embodiments of this utility model, the outer surface of the FPGA switching board cold plate is provided with a black anodized film.

[0037] The beneficial effects of adopting the above technical solution are: the black anodized film can enhance corrosion resistance and wear resistance, while improving heat radiation capacity, further improving heat dissipation performance and device durability.

[0038] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A cold plate for an FPGA switching board, characterized in that, include: Strip-shaped protrusion; The internal flow channel is located inside the strip-shaped boss; The inner flow channel has an inlet and outlet hole at each end, and the openings of the two inlet and outlet holes point in the same parallel direction. The inlet and outlet holes are connected to the inner flow channel by passing through the first straight tube and the second straight tube in sequence, and the axes of the inlet and outlet holes, the first straight tube, and the second straight tube are all perpendicular to each other. The inner diameters of the inner flow channel, the first straight cavity, and the second straight cavity are all equal, and the inner diameter of the inlet / outlet hole is larger than the inner diameter of the inner flow channel. The inlet and outlet holes sequentially include a first cylindrical cavity, a second cylindrical cavity, and a frustum cavity along the axis. The frustum cavity is connected to the first straight tube cavity, and the inner diameters of the first cylindrical cavity, the second cylindrical cavity, and the frustum cavity gradually decrease.

2. The FPGA switching board cold plate according to claim 1, characterized in that: The internal flow channel and the inlet / outlet holes are located on opposite sides of the plane on the top surface of the strip-shaped boss.

3. The FPGA switching board cold plate according to claim 1, characterized in that: The two ends of the internal flow channel include port segments that are perpendicularly connected to the second straight tube cavity, and the axes of the two port segments coincide on the same spatial straight line.

4. The FPGA switching board cold plate according to claim 1, characterized in that: The inner flow channel includes several arc segments, and the radius of curvature of the arc segments is not less than twice the inner diameter of the inner flow channel.

5. The FPGA switching board cold plate according to claim 1, characterized in that: The internal flow channel is serpentine and contains at least three pairs of channel segments with opposite flow directions, and the sets of opposite channel segments are arranged alternately.

6. The FPGA switching board cold plate according to claim 5, characterized in that: In the inner flow channel, the shortest lateral distance between each pair of adjacent channel segments with opposite flow directions, along the direction perpendicular to the axis of the channel segment, is equal to the inner diameter of the inner flow channel.

7. The FPGA switching board cold plate according to claim 1, characterized in that: The ratio of the axial length to the inner diameter of the first straight tube is no greater than two, and the ratio of the axial length to the inner diameter of the second straight tube is no greater than two.

8. The FPGA switching board cold plate according to claim 1, characterized in that: One side of the FPGA switching board cold plate has a flat surface, and the flat surface and the strip-shaped protrusion are located on the front and back sides of the FPGA switching board cold plate, respectively.

9. The FPGA switching board cold plate according to claim 1, characterized in that: The outer surface of the FPGA switching board cold plate is covered with a black anodized film.

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