Liquid cooling plate

Abstract

The application discloses a liquid cooling plate, which comprises a shell and a plurality of turbulence generators, wherein the shell is provided with a fluid flow channel; the plurality of turbulence generators are respectively arranged in the fluid flow channel in a spaced manner, and at least part of the turbulence generators are provided with cross flow channels. By arranging the cross flow channels on the turbulence generators, the cavity volume inside the liquid cooling plate is increased, the flow resistance of the liquid cooling plate is reduced, the original flow dead zone of the turbulence generators is eliminated, the heat exchange area of the fluid flow channel is more fully utilized, the heat exchange area inside the liquid cooling plate is increased due to the cross flow channels, the disturbance effect of fluid flow is enhanced, and the heat exchange capacity of the liquid cooling plate is improved.

Description

Technical Field

[0001] This application relates to the field of electronic heat dissipation technology, specifically to a liquid cooling plate. Background Technology

[0002] Turbulence refers to the flow of fluid across an object, where the shape of the object's surface can be altered to create turbulence or eddies. This type of flow, due to the presence of a velocity component perpendicular to the flow path, effectively disrupts the boundary layer, thereby significantly enhancing heat transfer.

[0003] Currently, the most commonly used flow channels for liquid cooling plates are serpentine flow channels, which utilize the heat exchange area of ​​the liquid cooling plate effectively through a Z-shaped flow channel design. However, with the advancement of technology, the heat flux density of electronic components is increasing, and ordinary flow channels cannot meet the heat dissipation requirements. Therefore, related technologies have begun to add turbulence columns inside the flow channels of liquid cooling plates, which can effectively increase the heat exchange area and increase fluid turbulence to a certain extent, thereby improving the heat transfer coefficient.

[0004] However, in the process of realizing this invention, the inventors discovered at least the following problems in the prior art:

[0005] While adding turbulence columns inside the flow channel of the liquid cooling plate can enhance heat transfer, it has a poor effect on fluid disturbance, does not significantly change the fluid velocity within the flow channel, and creates certain dead zones in the flow. Only a portion of the surface participates in heat transfer, and it does not significantly enhance heat transfer on the higher-temperature bottom surface of the liquid cooling plate. Therefore, its heat transfer capacity needs further improvement. Utility Model Content

[0006] In order to overcome the problems existing in the prior art, the main objective of this application is to provide a liquid cooling plate that can improve the heat exchange effect.

[0007] To achieve the above objectives, this application specifically adopts the following technical solution:

[0008] This application provides a liquid cooling plate, the liquid cooling plate comprising:

[0009] The housing is provided with fluid flow channels;

[0010] Multiple flow deflectors are provided, which are spaced apart within the fluid flow channel, and at least some of the flow deflectors are provided with intersecting flow channels.

[0011] In some embodiments, the intersecting flow channels include at least a first flow channel and a second flow channel, wherein the first flow channel and the second flow channel intersect.

[0012] In some embodiments, the included angle between the first flow channel and the second flow channel is α, where 30° ≤ α ≤ 60°.

[0013] In some embodiments, the intersecting flow channels further include a third flow channel, wherein the first flow channel, the second flow channel, and the third flow channel intersect.

[0014] In some embodiments, a plurality of the baffles are arranged in an array within the fluid flow channel.

[0015] In some embodiments, the plurality of the baffles are respectively configured as square columns.

[0016] In some embodiments, the housing is further provided with a liquid inlet and a liquid outlet, and the fluid flow channel includes a first flow section and a second flow section. One end of the first flow section is connected to the liquid inlet, one end of the second flow section is connected to the liquid outlet, and the other end of the second flow section is connected to the other end of the first flow section. The liquid inlet and the liquid outlet are located at one end of the housing, and the connection end between the first flow section and the second flow section is located at the other end of the housing.

[0017] In some embodiments, the length extension direction of the first flow segment and the second flow segment is the same as the length extension direction of the housing.

[0018] In some embodiments, the housing includes a cover plate and a bottom plate, the cover plate being connected to the bottom plate to form the fluid flow channel, and the cover plate having an inlet and an outlet, the inlet being connected to one end of the fluid flow channel and the outlet being connected to the other end of the fluid flow channel, and a plurality of the flow-disrupting elements being connected to the cover plate and located within the fluid flow channel.

[0019] In some embodiments, the plurality of the baffles are integrally formed with the cover plate, and the cover plate is connected to the base plate by welding.

[0020] The liquid cooling plate of this application includes a shell and multiple flow-dispersing elements. The shell has multiple fluid flow channels. The flow-dispersing elements are spaced apart within the fluid flow channels, and at least some of the flow-dispersing elements have intersecting flow channels. Compared with the prior art, this application increases the internal cavity volume of the liquid cooling plate by providing intersecting flow channels on the flow-dispersing elements, reduces the flow resistance of the liquid cooling plate, and eliminates the original flow dead zone of the flow-dispersing elements, making fuller use of the heat exchange area of ​​the fluid flow channels. At the same time, due to the presence of intersecting flow channels, the internal heat exchange area of ​​the liquid cooling plate is increased, and the disturbance effect of fluid flow is enhanced, thereby improving the heat exchange capacity of the liquid cooling plate. Attached Figure Description

[0021] Figure 1 A half-sectional view of the liquid cooling plate provided in an embodiment of this application.

[0022] Figure 2 An exploded perspective view of the liquid cooling plate provided in an embodiment of this application.

[0023] Figure 3 This is a cross-sectional view of the liquid cooling plate provided in an embodiment of this application.

[0024] Figure 4 Another cross-sectional view of the liquid cooling plate provided in the embodiment of this application.

[0025] Figure 5 This is a schematic diagram of the structure of the turbulence-disrupting component provided in an embodiment of this application.

[0026] Figure 6 This is a schematic diagram of the structure of a turbulence-disrupting element provided in another embodiment of this application.

[0027] Figure 7 This is a schematic diagram of the cover plate provided in an embodiment of this application.

[0028] Attached image labels:

[0029] 1. Outer shell; 10. Fluid flow channel; 101. Liquid inlet; 102. Liquid outlet; 103. First flow section; 104. Second flow section; 11. Cover plate; 12. Base plate; 2. Baffle; 20. Cross flow channel; 201. First flow channel; 202. Second flow channel; 203. Third flow channel. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In the description of this specification, it should be understood that the directional terms such as "upper" and "lower" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0033] Reference Figure 1 As shown in the figure, an embodiment of this application discloses a liquid-cooled plate, which includes a shell 1 and a plurality of flow-disrupting elements 2. The shell 1 is provided with a fluid flow channel 10, a liquid inlet 101, and a liquid outlet 102. One end of the fluid flow channel 10 is connected to the liquid inlet 101, and the other end of the fluid flow channel 10 is connected to the liquid outlet 102. The plurality of flow-disrupting elements 2 are respectively and spaced apart in the fluid flow channel 10, and at least some of the flow-disrupting elements 2 are provided with cross flow channels 20. Specifically, fluid can flow into the fluid flow channel 10 from the liquid inlet 101, and flow through each flow-disrupting element 2 before flowing out from the liquid outlet 102. When the fluid flows through each flow-disrupting element 2, the turbulence of the fluid flow is enhanced under the action of the cross flow channels 20, thereby breaking the boundary layer around the fluid flow channel 10 and enhancing the heat transfer capacity. This application increases the cavity volume inside the liquid cooling plate by adding a cross flow channel 20 inside the turbulence-disrupting component 2, reduces the flow resistance of the liquid cooling plate, and eliminates the original flow dead zone of the turbulence-disrupting component 2, making fuller use of the heat exchange area of ​​the fluid flow channel 10. At the same time, due to the presence of the cross flow channel 20, the heat exchange area inside the liquid cooling plate is increased, and the disturbance effect of fluid flow is enhanced, thereby improving the heat exchange capacity of the liquid cooling plate.

[0034] Reference Figures 2 to 4 As shown, the outer casing 1 includes a cover plate 11 and a bottom plate 12. The cover plate 11 is provided with a liquid inlet 101 and a liquid outlet 102, and the cover plate 11 is connected to the bottom plate 12 to form a fluid flow channel 10. Multiple flow-disrupting elements 2 are respectively connected to the cover plate 11 and located in the fluid flow channel 10.

[0035] In some embodiments, the cover plate 11, the base plate 12, and the baffle 2 are all made of metal. The baffle 2 and the cover plate 11 are integrally formed, and the cover plate 11 is connected to the base plate 12 by welding. Compared with a toothed liquid cooling plate with the same heat exchange capacity, the liquid cooling plate in this embodiment is easier to weld, and therefore has a lower processing cost.

[0036] Reference Figure 5 As shown in the figure, the arrows indicate the flow direction of the fluid. The intersecting flow channel 20 includes at least a first flow channel 201 and a second flow channel 202. The first flow channel 201 and the second flow channel 202 intersect, and the angle between the first flow channel 201 and the second flow channel 202 is α, where 30° ≤ α ≤ 60°. Specifically, the angle α between the first flow channel 201 and the second flow channel 202 can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc. In this embodiment, the first flow channel 201 and the second flow channel 202 are arranged perpendicularly, that is, α = 45°. In other embodiments, the angle α between the first flow channel 201 and the second flow channel 202 can also be 60°. When the angle α between the first flow channel 201 and the second flow channel 202 is 60°, the flow disturbance of the fluid at the intersecting flow channel 20 is more intense.

[0037] Reference Figure 6 As shown in the figure, the arrows indicate the flow direction of the fluid. In some embodiments, the intersecting flow channel 20 may also include a first flow channel 201, a second flow channel 202, and a third flow channel 203, which intersect. It is understood that in other embodiments, the intersecting flow channel 20 may also include four or more flow channels, which are interconnected.

[0038] Reference Figure 7 As shown, the fluid channel 10 includes a first flow section 103 and a second flow section 104. One end of the first flow section 103 is connected to the inlet 101, and one end of the second flow section 104 is connected to the outlet 102. The other end of the first flow section 103 is connected to the other end of the second flow section 104. The inlet 101 and the outlet 102 are located at one end of the outer shell 1, and the connection end between the first flow section 103 and the second flow section 104 is located at the other end of the outer shell 1. The length extension direction of the first flow section 103 and the second flow section 104 is the same as the length extension direction of the outer shell 1. Multiple flow-disrupting elements 2 are arranged in an array within the fluid channel 10, and each of the multiple flow-disrupting elements 2 is configured as a columnar structure, such as a cylinder, square prism, triangular prism, etc. Of course, in other embodiments, the multiple flow-disrupting elements 2 can also be irregularly distributed within the fluid channel, and the multiple flow-disrupting elements can also be configured as other shapes, such as blocky or other irregular shapes.

[0039] It should be noted that this application can be specifically applied to regions with high heat flux density, and the liquid cooling plate structure of this application can be appropriately densified in these regions to effectively reduce flow resistance and improve the heat transfer capacity of the liquid cooling plate. For example, it has been verified that at a flow rate of 5L, the heat flux density per unit volume is 22W / cm³. 2 The heat source temperature was reduced by 0.8%, the flow resistance was reduced by 20%, and the heat exchange effect was even better as the density of the square columns increased.

[0040] This application enhances the flow disturbance of the fluid by adding cross channels 20 to the array square flow disruptor 2, which can further disrupt the boundary layer around the fluid flow channel 10, thereby obtaining a stronger heat transfer capacity than the traditional structure, and thus enhancing the heat transfer capacity of the liquid cooling plate. At the same time, the structure of adding cross channels 20 to the flow disruptor 2 can also increase the heat transfer area of ​​the liquid cooling plate and reduce the flow dead zone area caused by the array square column, so that the liquid cooling plate with serpentine fluid flow channel 10 can be used in applications with higher heat flux density.

[0041] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A liquid-cooled plate, characterized in that, include: The housing is provided with fluid flow channels; Multiple flow deflectors are provided, which are spaced apart within the fluid flow channel, and at least some of the flow deflectors are provided with intersecting flow channels.

2. The liquid cooling plate according to claim 1, characterized in that, The intersecting flow channel includes at least a first flow channel and a second flow channel, and the first flow channel and the second flow channel intersect.

3. The liquid cooling plate according to claim 2, characterized in that, The angle between the first flow channel and the second flow channel is α, where 30° ≤ α ≤ 60°.

4. The liquid cooling plate according to claim 2, characterized in that, The intersecting flow channel also includes a third flow channel, and the first flow channel, the second flow channel and the third flow channel intersect.

5. The liquid cooling plate according to claim 1, characterized in that, Multiple of the aforementioned flow-disrupting elements are arranged in an array within the fluid flow channel.

6. The liquid cooling plate according to claim 1, characterized in that, Each of the aforementioned baffles is configured as a square column.

7. The liquid cooling plate according to claim 1, characterized in that, The outer casing is also provided with a liquid inlet and a liquid outlet. The fluid flow channel includes a first flow section and a second flow section. One end of the first flow section is connected to the liquid inlet, one end of the second flow section is connected to the liquid outlet, and the other end of the second flow section is connected to the other end of the first flow section. The liquid inlet and the liquid outlet are located at one end of the outer casing, and the connection end between the first flow section and the second flow section is located at the other end of the outer casing.

8. The liquid cooling plate according to claim 7, characterized in that, The length extension direction of the first flow segment and the second flow segment is the same as the length extension direction of the outer shell.

9. The liquid-cooled plate according to any one of claims 1 to 8, characterized in that, The outer casing includes a cover plate and a bottom plate. The cover plate is connected to the bottom plate to form the fluid flow channel. The cover plate is provided with an inlet and an outlet. The inlet is connected to one end of the fluid flow channel, and the outlet is connected to the other end of the fluid flow channel. A plurality of the flow-disrupting elements are respectively connected to the cover plate and located inside the fluid flow channel.

10. The liquid cooling plate according to claim 9, characterized in that, The multiple baffles are integrally formed with the cover plate, and the cover plate is connected to the base plate by welding.

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