Liquid cooling plate

Abstract

The utility model discloses a liquid cooling plate which comprises a cover plate, a base plate and at least one first relieving tooth unit arranged on the side, close to the base plate, of the cover plate. The first form relieved tooth unit comprises a plurality of first form relieved teeth, and a gap is formed between every two adjacent first form relieved teeth; the at least one second relieving tooth unit is arranged on one side, close to the cover plate, of the base plate; the second form relieved tooth unit comprises a plurality of second form relieved teeth; when the cover plate and the base plate are buckled, the second form relieved tooth units are engaged with the first form relieved tooth units, so that the second form relieved tooth parts are located in the gaps, and the first form relieved teeth and the second form relieved teeth are alternately arranged; according to the liquid cooling plate, a new form relieved tooth structure is additionally arranged on the substrate, so that the second form relieved teeth and the first form relieved teeth are meshed and alternately arranged after the cover plate and the substrate are buckled, the surface area density of the form relieved teeth is increased, the contact area and the heat conduction path are increased, and the heat dissipation efficiency is improved on the premise that the overall size of an original liquid cooling plate is not changed; and the application range of the liquid cooling plate is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid cooling heat dissipation, in particular to a liquid cooling plate. Background Art

[0002] Generally, the inside of a liquid cooling plate is of a common shovel tooth structure, and the shovel teeth are often arranged on the cover plate of the liquid cooling plate. After the base plate of the liquid cooling plate is buckled with the cover plate, water is injected between the cover plate and the base plate, so as to dissipate heat through the shovel teeth.

[0003] With the increase of chip power consumption and heat density, the heat dissipation efficiency of the liquid cooling plate also needs to be improved accordingly. However, due to the limitation of the existing shovel tooth process, there are limits to the tooth thickness, tooth height and tooth pitch. Therefore, the existing liquid cooling plate with a shovel tooth structure often increases the heat dissipation area by increasing the number of shovel teeth on the cover plate, so as to improve the heat dissipation efficiency. However, this improvement method requires increasing the size of the liquid cooling plate, which greatly reduces the applicable range of the liquid cooling plate.

[0004] Therefore, the existing technology still needs to be improved and developed. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a liquid cooling plate aiming at the above defects of the existing technology, so as to solve the problem that the applicable range of the liquid cooling plate is reduced due to the increase of the liquid cooling plate size caused by improving the heat dissipation efficiency by increasing the number and area of the shovel teeth on the cover plate in the existing technology.

[0006] The technical scheme adopted by the utility model to solve the technical problem is as follows:

[0007] A liquid cooling plate, which comprises a cover plate and a base plate, and further comprises:

[0008] At least one first shovel tooth unit, which is arranged on the side of the cover plate close to the base plate; the first shovel tooth unit comprises a plurality of first shovel teeth, and there is a gap between every two adjacent first shovel teeth;

[0009] At least one second shovel tooth unit, which is arranged on the side of the base plate close to the cover plate; the second shovel tooth unit comprises a plurality of second shovel teeth;

[0010] When the cover plate is buckled with the base plate, the second shovel tooth unit is engaged with the first shovel tooth unit, so that part of the second shovel teeth are located in the gaps, and the first shovel teeth and the second shovel teeth are arranged alternately.

[0011] For the liquid cooling plate, the length of the second shovel teeth is equal to that of the first shovel teeth.

[0012] For the liquid cooling plate, the length of the second shovel teeth is less than that of the first shovel teeth, and the second shovel tooth unit is used to correspond to the high heat area of the device to be cooled.

[0013] The liquid cooling plate, wherein a liquid inlet and a liquid outlet are provided on the substrate; a substrate cavity is provided on the substrate, and the second shovel tooth unit is located in the substrate cavity; a cover plate cavity is provided on the cover plate, and the first shovel tooth unit is located in the cover plate cavity; when the substrate is buckled with the cover plate, the substrate cavity and the cover plate cavity enclose a liquid receiving space, and the liquid receiving space is respectively communicated with the liquid inlet and the liquid outlet.

[0014] The liquid cooling plate, wherein the arrangement direction of the liquid inlet and the liquid outlet is parallel to the extension direction of the first shovel tooth.

[0015] The liquid cooling plate further includes:

[0016] Cover plate reinforcing ribs, which are provided on the cover plate;

[0017] The first shovel tooth units are multiple, and there is a first gap between every two adjacent first shovel tooth units, and the width of the gap is smaller than the width of the first gap; the cover plate reinforcing ribs are located in the first gap.

[0018] The liquid cooling plate further includes:

[0019] Substrate reinforcing ribs, which are provided on the substrate;

[0020] The second shovel tooth units are multiple, and there is a second gap between every two adjacent second shovel tooth units, and the distance between two adjacent second shovel teeth is smaller than the width of the second gap; the substrate reinforcing ribs are located in the second gap.

[0021] The liquid cooling plate, wherein when the substrate is buckled with the cover plate, the substrate reinforcing ribs and the cover plate reinforcing ribs correspond to each other one by one and are mutually attached to divide the liquid receiving space into multiple sealed spaces.

[0022] The liquid cooling plate, wherein when the substrate is buckled with the cover plate, there is a first gap between the second shovel tooth and the cover plate.

[0023] The liquid cooling plate, wherein when the substrate is buckled with the cover plate, there is a second gap between the second shovel tooth and the adjacent first shovel tooth.

[0024] Beneficial effects: In this application, by adding a new shovel tooth structure, namely the second shovel tooth unit, to the substrate, when the cover plate is buckled with the substrate, the second shovel teeth bite and are alternately arranged with the first shovel teeth, without increasing the area of the cover plate and the substrate, nor increasing the thickness after the cover plate and the substrate are buckled. Therefore, without changing the overall size of the original liquid cooling plate, this application increases the surface area density of the shovel teeth through the shovel tooth biting structure, increases the contact area and heat conduction path, can conduct heat exchange more efficiently, enables heat to be quickly transferred to the coolant, avoids local heat accumulation, optimizes the flow of the cooling liquid, thereby improving the heat dissipation efficiency of the liquid cooling plate and ensuring the applicable range of the liquid cooling plate. Brief Description of the Drawings

[0025] Figure 1 is a schematic diagram of the overall structure of the liquid cooling plate after the cover plate and the substrate in this application are buckled;

[0026] Figure 2 is the first view when the cover plate and the substrate in this utility model are separated;

[0027] Figure 3 is the second view when the cover plate and the substrate in this utility model are separated;

[0028] Figure 4 is a schematic diagram of the distribution state of the first shovel teeth and the second shovel teeth after the cover plate and the substrate in this utility model are buckled. Detailed Description of the Embodiment

[0029] To make the objectives, technical solutions and advantages of this utility model clearer and more definite, the following further elaborates on this utility model with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain this utility model and are not used to limit this utility model.

[0030] The inventor has found through research that when improving the heat dissipation efficiency of a liquid cooling plate by increasing the number of shovel teeth on the cover plate and the laying area of the shovel teeth in the prior art, the volume of the cover plate will increase; then, in order to be properly matched with the cover plate, the volume of the substrate also needs to be increased, which makes the overall volume of the liquid cooling plate increase. Therefore, for the original small-volume liquid cooling plate, due to its small volume, it can be applied to more heat dissipation occasions (such as being installed on a server to cool the server); the improved liquid cooling plate cannot be adapted to a smaller accommodation space, greatly reducing the applicable range of the liquid cooling plate.

[0031] To solve the above technical problems, as Figure 1 , Figure 2 and Figure 3As shown in the figure, the present utility model provides a liquid cooling plate, which comprises a cover plate 1, a base plate 2, at least one first shovel tooth unit 3 and at least one second shovel tooth unit 4; the first shovel tooth unit 3 is arranged on one side of the cover plate 1 close to the base plate 2, and the base plate 2 is matched with the cover plate 1, so that when the base plate 2 and the cover plate 1 are buckled, the base plate 2 can block the first shovel tooth unit 3.

[0032] Specifically, the first shovel tooth unit 3 comprises a plurality of first shovel teeth 31, and there is a gap between every two adjacent first shovel teeth 31; the second shovel tooth unit 4 is arranged on one side of the base plate 2 close to the cover plate 1, and the second shovel tooth unit 4 comprises a plurality of second shovel teeth 41. When the cover plate 1 and the base plate 2 are buckled, the second shovel tooth unit 4 bites with the first shovel tooth unit 3, so that part of the second shovel teeth 41 are located in the gaps, and the first shovel teeth 31 and the second shovel teeth 41 are arranged alternately.

[0033] In this application, by adding a new shovel tooth structure, that is, the second shovel tooth unit 4, on the base plate 2, when the cover plate 1 and the base plate 2 are buckled, as Figure 4 shown, the second shovel teeth 41 bite with the first shovel teeth 31 and are arranged alternately, without increasing the areas of the cover plate 1 and the base plate 2, nor increasing the thickness after the cover plate 1 and the base plate 2 are buckled. Therefore, without changing the overall size of the original liquid cooling plate, this application increases the surface area density of the shovel teeth. The shovel tooth biting structure increases the contact area and the heat conduction path, can perform heat exchange more efficiently, the heat can be quickly transferred to the coolant, avoiding local heat accumulation, optimizing the flow of the cooling liquid, thereby improving the heat dissipation efficiency of the liquid cooling plate and ensuring the applicable range of the liquid cooling plate.

[0034] Embodiment 1 of this application

[0035] The length of the second shovel teeth 41 is equal to the length of the first shovel teeth 31.

[0036] In this embodiment, the positions of the second shovel teeth 41 are adapted to the positions of the first shovel teeth 31, and the length of the second shovel teeth 41 is equal to the length of the first shovel teeth 31. Then, when the cover plate 1 and the base plate 2 are buckled, the overlapping area corresponding between the second shovel teeth 41 and the first shovel teeth 31 can reach the maximum, and the heat dissipation efficiency of the liquid cooling plate reaches the maximum accordingly.

[0037] Embodiment 2 of this application

[0038] As Figure 2 and Figure 3As shown, the length of the second shovel teeth 41 is smaller than the length of the first shovel teeth 31, and the second shovel tooth unit 4 is used to correspond to the high heat area of the device to be cooled.

[0039] The difference between this embodiment and the first embodiment is that the length of the second shovel tooth 41 is not equal to the length of the first shovel tooth 31, but the length of the second shovel tooth 41 is smaller than the length of the first shovel tooth 31. Figure 4 As shown, a portion of the first shovel teeth 31 is still a basic shovel tooth structure, and another portion is arranged alternately with the corresponding second shovel teeth 41, so that the heat dissipation efficiency of the local area of the liquid cooling plate is improved, while the area where the second shovel teeth 41 are not arranged still maintains the original heat dissipation efficiency.

[0040] Based on the structure of the second shovel teeth 41 in the present embodiment, the occupied area of the second shovel teeth 41 is reduced, so that the second shovel teeth 41 can be arranged in different areas according to actual heat dissipation requirements; for example, the second shovel teeth 41 are arranged in correspondence with the high heat zone of the equipment to be cooled, and the second shovel teeth 41 are not arranged in the low heat zone, thereby achieving the goal of improving the comprehensive heat dissipation efficiency of the liquid cooling plate while reducing the production cost as much as possible, thereby further improving the applicability of the liquid cooling plate.

[0041] like Figure 1 As shown, the substrate 2 is provided with a liquid inlet 5 and a liquid outlet 6; in one embodiment of the present application, as Figure 3 As shown, a substrate cavity 21 is provided on the substrate 2, and the substrate cavity 21 is communicated with the liquid inlet 5 and the liquid outlet 6 respectively, and the second shovel tooth unit 4 is located in the substrate cavity 21; Figure 2 As shown, a cover plate cavity 11 is provided on the cover plate 1 , and the first shovel tooth unit 3 is located in the cover plate cavity 11 .

[0042] When the substrate 2 is buckled with the cover plate 1, the substrate cavity 21 and the cover plate cavity 11 are combined to form a liquid receiving space, and the liquid receiving space is respectively connected with the liquid inlet 5 and the liquid outlet 6; then, when the substrate 2 is buckled with the cover plate 1 and cooling liquid is injected into the liquid inlet 5, the cooling liquid can enter the liquid receiving space and flow through the first shovel tooth 31 and the second shovel tooth 41, thereby dissipating heat and cooling.

[0043] In this embodiment, corresponding cavities are provided on both the cover plate 1 and the substrate 2, so that when the cover plate 1 and the substrate 2 are buckled, the liquid containment space can be formed by surrounding. Moreover, both the first shovel tooth 31 and the second shovel tooth 41 are located within the liquid containment space, thereby increasing the contact area between the cover plate 1 and the substrate 2 and the cooling liquid, and achieving the purpose of further improving the heat dissipation efficiency of the liquid cooling plate.

[0044] In one embodiment of the present application, the arrangement direction of the liquid inlet 5 and the liquid outlet 6 is parallel to the extending direction of the first shovel tooth 31.

[0045] Specifically, the extending direction of the first shovel tooth 31 is the length direction of the first shovel tooth 31; when the cover plate 1 and the substrate 2 are buckled, the extending direction of the first shovel tooth 31 is parallel to the extending direction of the second shovel tooth 41, so as to ensure that the first shovel tooth 31 and the second shovel tooth 41 can be engaged and arranged alternately, ensuring that the overlapping area corresponding between the first shovel tooth 31 and the second shovel tooth 41 can reach the maximum, thereby achieving the best heat dissipation efficiency.

[0046] In this embodiment, the arrangement direction of the liquid inlet 5 and the liquid outlet 6 is set such that this arrangement direction is parallel to the extending direction of the first shovel tooth 31. Then, when the cooling liquid enters the liquid containment space from the liquid inlet 5 and flows out from the liquid outlet 6, the flow in the liquid containment space can form a flow channel along the extending direction of the first shovel tooth 31, extending the contact time between the cooling liquid and the first shovel tooth 31 and the second shovel tooth 41, optimizing the flow of the cooling liquid, and further improving the heat dissipation efficiency of the liquid cooling plate.

[0047] In one embodiment of the present application, as Figure 2 and Figure 4 shown, the liquid cooling plate further includes a cover plate reinforcing rib 7, and the cover plate reinforcing rib 7 is provided on the cover plate 1; the first shovel tooth units 3 are multiple, and there is a first gap between every two adjacent first shovel tooth units 3, and the width of the gap is smaller than the width of the first gap; the cover plate reinforcing rib 7 is located within the first gap.

[0048] As Figure 3 and Figure 4 shown, the liquid cooling plate further includes a substrate reinforcing rib 8, and the substrate reinforcing rib 8 is provided on the substrate 2; the second shovel tooth units 4 are multiple, and there is a second gap between every two adjacent second shovel tooth units 4, and the distance between two adjacent second shovel teeth 41 is smaller than the width of the second gap; the substrate reinforcing rib 8 is located within the second gap.

[0049] In this embodiment, the cover reinforcing rib 7 can enhance the strength of the cover 1 and separate two adjacent first shovel tooth units 3, thereby forming a plurality of flow channels containing the first shovel tooth units 3 in the cover cavity 11. Similarly, the substrate reinforcing rib 8 can enhance the strength of the substrate 2 and separate two adjacent second shovel tooth units 4, thereby forming a plurality of flow channels containing the second shovel tooth units 4 in the substrate cavity 21. Therefore, when the cover 1 and the substrate 2 are snapped together, under the blocking effect of the cover reinforcing rib 7 and the substrate reinforcing rib 8, a certain drainage is formed, thereby forming a plurality of liquid flow channels in the liquid storage space, optimizing the flow of the cooling liquid, reducing the flow resistance, forming local disturbances, and enhancing the heat conduction effect.

[0050] Meanwhile, the width of the first gap is greater than the width of the gap, and the width of the second gap is greater than the distance between two adjacent second shovel teeth 41, which can reduce the stress concentration between the first shovel teeth 31 and between the second shovel teeth 41, effectively disperse the thermal stress, avoid structural deformation or damage caused by thermal expansion and contraction, and improve the reliability and durability of the liquid cooling plate.

[0051] In one implementation manner of this embodiment, when the substrate 2 and the cover 1 are snapped together, the substrate reinforcing rib 8 and the cover reinforcing rib 7 correspond to each other one by one and are mutually attached to divide the liquid storage space into a plurality of closed spaces.

[0052] In this implementation manner, the cover reinforcing rib 7 and the substrate reinforcing rib 8 correspond to each other one by one, and after the cover 1 and the substrate 2 are snapped together, as Figure 4 shown, the cover reinforcing rib 7 can be mutually attached to the corresponding substrate reinforcing rib 8, which can significantly increase the mechanical strength and overall stability of the liquid cooling plate, enable the liquid cooling plate to withstand higher mechanical stress and thermal stress, and reduce deformation or rupture.

[0053] Under the isolation effect of the cover reinforcing rib 7 and the substrate reinforcing rib 8, the liquid storage space only forms a connected flow channel in the areas of the first shovel teeth 31 and the second shovel teeth 41, and there is no liquid flow in the reinforcing rib area. The cooling liquid can be concentrated in the shovel tooth structure area, ensuring that the cooling liquid mainly flows through the areas that need efficient heat dissipation, reducing unnecessary flow resistance, and ensuring that the cooling liquid directly contacts the shovel tooth structure, so as to more effectively absorb and conduct heat.

[0054] Based on this implementation manner, the first shovel tooth unit 3 and the second shovel tooth unit 4 can be arranged in key areas. Then, under the isolation effect of the cover reinforcing rib 7 and the substrate reinforcing rib 8, the waste of the flow of the cooling liquid in non-key areas is avoided, and the cooling liquid is concentrated in the areas that need heat dissipation, thereby improving the overall heat dissipation performance.

[0055] Meanwhile, under the partitioning effect of the cover plate stiffeners 7, the plurality of first shovel tooth units 3 are evenly distributed within the cover plate cavity 11; the existence of the stiffener structure enables the flow channels to be evenly distributed within the liquid containment space, thereby avoiding local overheating and improving the overall heat dissipation performance and reliability of the liquid cooling plate.

[0056] Furthermore, the stiffener regions without liquid flow reduce the complexity of the liquid channels, lower the risk of blockage and fouling, and facilitate the cleaning and maintenance of the liquid cooling plate.

[0057] In an embodiment of the present application, when the substrate 2 is fastened to the cover plate 1, there is a first gap between the second shovel tooth 41 and the cover plate 1.

[0058] In this embodiment, when the substrate 2 is fastened to the cover plate 1, there is a first gap between the second shovel tooth 41 and the cover plate 1, and then the first gap can form a flow channel, thereby increasing the contact area between the second shovel tooth 41 and the cooling liquid when liquid is passed through, and further enhancing the heat dissipation efficiency.

[0059] Meanwhile, the flow channel formed by the first gap can further form a turbulent flow, and the local perturbation helps to break the boundary layer, further increasing the heat conduction effect.

[0060] In an embodiment of the present application, when the substrate 2 is fastened to the cover plate 1, there is a second gap between the second shovel tooth 41 and the adjacent first shovel tooth 31, thereby forming a flow channel between the second shovel tooth 41 and the adjacent first shovel tooth 31, ensuring that both sides of the first shovel tooth 31 perpendicular to the extension direction and both sides of the second shovel tooth 41 perpendicular to the extension direction can contact the cooling liquid, maximizing the heat dissipation area after the first shovel tooth 31 and the second shovel tooth 41 are engaged, and thus ensuring the heat dissipation effect of the liquid cooling plate.

[0061] In summary, the present application provides a liquid cooling plate, which includes a cover plate and a base plate, and further includes at least one first shovel tooth unit disposed on the side of the cover plate close to the base plate; the first shovel tooth unit includes a plurality of first shovel teeth, and there is a gap between every two adjacent first shovel teeth; at least one second shovel tooth unit is disposed on the side of the base plate close to the cover plate; the second shovel tooth unit includes a plurality of second shovel teeth; when the cover plate and the base plate are buckled, the second shovel tooth unit engages with the first shovel tooth unit, so that part of the second shovel teeth are located in the gaps, and the first shovel teeth and the second shovel teeth are arranged alternately. In the present application, by adding a new shovel tooth structure, that is, the second shovel tooth unit, on the base plate, when the cover plate and the base plate are buckled, the second shovel teeth and the first shovel teeth are engaged and arranged alternately, without increasing the area of the cover plate and the base plate, nor increasing the thickness after the cover plate and the base plate are buckled. Therefore, without changing the overall size of the original liquid cooling plate, the present application increases the surface area density of the shovel teeth through the shovel tooth engagement structure, increases the contact area and the heat conduction path, can perform heat exchange more efficiently, the heat can be quickly transferred to the coolant, avoiding local heat accumulation, optimizing the flow of the cooling liquid, thereby improving the heat dissipation efficiency of the liquid cooling plate and ensuring the applicable range of the liquid cooling plate.

[0062] It should be understood that the application of the present utility model is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A liquid cooling plate, which comprises a cover plate and a base plate, and is characterized in that, It further includes: At least one first shovel tooth unit, arranged on the side of the cover plate close to the substrate; the first shovel tooth unit includes a plurality of first shovel teeth, and there is a gap between every two adjacent first shovel teeth; At least one second shovel tooth unit, arranged on the side of the substrate close to the cover plate; the second shovel tooth unit includes a plurality of second shovel teeth; When the cover plate and the substrate are buckled, the second shovel tooth unit and the first shovel tooth unit are engaged, so that part of the second shovel teeth are located in the gaps, and the first shovel teeth and the second shovel teeth are arranged alternately.

2. The liquid cooling plate according to claim 1, wherein The length of the second shovel teeth is equal to that of the first shovel teeth.

3. The liquid cooling plate according to claim 1, characterized in that, The length of the second shovel teeth is less than that of the first shovel teeth, and the second shovel tooth unit is used to correspond to the high-heat area of the device to be cooled.

4. The liquid cooling plate according to claim 1, wherein A liquid inlet and a liquid outlet are arranged on the substrate; a substrate cavity is arranged on the substrate, and the second shovel tooth unit is located in the substrate cavity; a cover plate cavity is arranged on the cover plate, and the first shovel tooth unit is located in the cover plate cavity; when the substrate and the cover plate are buckled, the substrate cavity and the cover plate cavity enclose a liquid storage space, and the liquid storage space is respectively communicated with the liquid inlet and the liquid outlet.

5. The liquid cooling plate according to claim 4, characterized in that, The arrangement direction of the liquid inlet and the liquid outlet is parallel to the extension direction of the first shovel teeth.

6. The liquid cooling plate according to claim 4, wherein, It further includes: Cover plate reinforcing ribs, arranged on the cover plate; There are multiple first shovel tooth units, and there is a first gap between every two adjacent first shovel tooth units. The width of the gap is less than the width of the first gap; the cover plate reinforcing ribs are located in the first gap.

7. The liquid cooling plate according to claim 6, wherein, It further includes: Substrate reinforcing ribs, arranged on the substrate; There are multiple second shovel tooth units, and there is a second gap between every two adjacent second shovel tooth units. The distance between two adjacent second shovel teeth is less than the width of the second gap; the substrate reinforcing ribs are located in the second gap.

8. The liquid cooling plate according to claim 7, characterized in that, When the substrate and the cover plate are buckled, the substrate reinforcing ribs and the cover plate reinforcing ribs correspond to each other and are mutually attached to divide the liquid storage space into multiple sealed spaces.

9. The liquid cooling plate according to claim 1, wherein When the substrate and the cover plate are buckled, there is a first gap between the second shovel teeth and the cover plate.

10. The liquid cooling plate according to claim 1, wherein, When the substrate and the cover plate are buckled, there is a second gap between the second shovel teeth and the adjacent first shovel teeth.

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