High heat flux density spiral metamorphic serration liquid cooling plate

Abstract

The application relates to the technical field of liquid cooling equipment, and particularly provides a high-heat-flow-density spiral heterogeneous pin-finned liquid cooling plate, which comprises a plurality of heat-dissipating pin-fins, an upper cover shell, a bottom of the upper cover shell being provided with a downwardly-opened accommodating cavity, a lower base plate, the lower base plate being combined with the open cover, the plurality of heat-dissipating pin-fins being arranged in the accommodating cavity and fixedly arranged on the lower base plate, and an outer wall of the lower base plate being used for contacting a high-heat-flow-density equipment; wherein the plurality of heat-dissipating pin-fins are all extended upwards from the bottom of the lower base plate by spiral blades; then the heat-dissipating pin-fins in the form of the spiral blades extending upwards from the bottom are arranged on the lower base plate, so that the cooling liquid is fully contacted with the spiral blades when flowing in the cavity, the contact area between the cooling liquid and the heat-dissipating pin-fins is increased, and the heat exchange efficiency is improved. Furthermore, the heterogeneous pin-fins adopting the pin-finned process can cover a larger range of edges and corners, so that the utilization rate of the base plate area is improved.

Description

Technical Field

[0001] This application relates to the field of liquid cooling equipment technology, and in particular to a high heat flux density spiral heterogeneous toothed liquid cooling plate. Background Technology

[0002] Currently, liquid cooling plates are a type of heat sink with excellent heat dissipation performance. They achieve efficient cooling of the object being cooled through an internally circulating cooling liquid. Liquid cooling plates are widely used in high heat flux density devices with high heat dissipation requirements, such as general-purpose servers, cloud computing servers, data storage servers, AI computing servers, and edge computing servers.

[0003] Existing liquid cooling plates typically have numerous heat dissipation fins inside to enhance heat exchange. However, these fins are generally cylindrical with smooth surfaces, resulting in limited contact area with the coolant and thus limiting heat transfer efficiency, making it difficult to further improve overall heat dissipation performance.

[0004] Therefore, existing technologies have defects and shortcomings, and need further improvement and development. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a high heat flux density spiral heterogeneous serrated liquid cooling plate, which aims to solve the problem that the heat transfer efficiency of the liquid cooling plate in the prior art is limited and it is difficult to further improve the overall heat dissipation performance.

[0006] The technical solution adopted by this application to solve the technical problem is as follows: a high heat flux density spiral heterogeneous toothed liquid cooling plate for heat dissipation of high heat flux density equipment, comprising:

[0007] Several heat dissipation denticles;

[0008] The upper cover shell has a downward-opening receiving cavity at its bottom;

[0009] The lower substrate is covered by the upper cover shell; a plurality of heat dissipation punctures are disposed in the accommodating cavity and the plurality of heat dissipation punctures are fixedly disposed on the lower substrate; the outer wall of the lower substrate is used to contact the high heat flux density device.

[0010] In this embodiment, several of the heat dissipation denticles are formed by spiral blades extending upward from the bottom of the lower substrate.

[0011] Optionally, the helical blade is provided with a helical groove on its side.

[0012] Optionally, the cross-section of the helical heterogeneous groove is V-shaped or trapezoidal.

[0013] Optionally, the spiral directions of the plurality of spiral blades are different from each other; the plurality of spiral blades located on the outer side are configured to rotate clockwise, and the plurality of spiral blades located on the inner side are configured to rotate counterclockwise.

[0014] Optionally, the height of the heat dissipation denticles gradually increases or decreases along the height direction to form a flow velocity gradient, thereby improving heat exchange efficiency.

[0015] Optionally, the lower substrate is provided with guide ribs, which are arranged alternately with the heat dissipation punctures to guide the coolant to flow along a set path in the accommodating cavity.

[0016] Optionally, the cross-section of the guide rib is a semi-circular, triangular, or trapezoidal structure, and the guide rib is used to further disturb the flow direction of the coolant and increase the degree of turbulence.

[0017] Optionally, the upper cover shell is provided with a coolant inlet and a coolant outlet, which are respectively located at both ends of the accommodating cavity; the coolant inlet is for coolant to flow in, and the coolant outlet is for coolant to flow out.

[0018] Optionally, a primary filter screen is provided in the coolant inlet to block large particulate impurities from entering the receiving cavity and prevent clogging of the heat dissipation teeth.

[0019] Optionally, the projected area of ​​the upper cover is smaller than the projected area of ​​the lower substrate, and the upper cover and the lower substrate are connected by laser welding or brazing.

[0020] Compared with existing technologies, this application provides a high heat flux density spiral heterogeneous serrated liquid cooling plate. This high heat flux density spiral heterogeneous serrated liquid cooling plate features multiple heat dissipation serrations in the form of spiral blades extending upwards on a lower substrate. An upper cover and the lower substrate form a cavity, allowing the coolant to fully contact the spiral blades as it flows within the cavity, increasing the contact area between the coolant and the heat dissipation serrations, thereby improving heat transfer efficiency. Compared to the smooth cylindrical heat dissipation serrations used in existing technologies, the spiral blade configuration provides a more complex and turbulent fluid path, causing spiral disturbances in the coolant during flow, effectively improving turbulence intensity and fluid convection heat transfer efficiency, thus solving the problem of limited heat transfer efficiency in existing liquid cooling plates. Furthermore, the heterogeneous serrations created using a serration process can cover a larger corner area, thereby improving substrate area utilization. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the high heat flux density spiral heterogeneous serrated liquid cooling plate provided in this application;

[0022] Figure 2This is a three-dimensional exploded structural diagram of the high heat flux density spiral heterogeneous serrated liquid cooling plate provided in this application;

[0023] Figure 3 It is provided in this application Figure 2 An enlarged view of point A in the diagram;

[0024] Figure 4 This is a front view of the high heat flux density spiral heterogeneous serrated liquid cooler provided in this application;

[0025] Figure 5 It is provided in this application Figure 4 A cross-sectional view along the I-I direction.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10. High heat flux density spiral heterogeneous serrated liquid cooling plate; 11. Heat dissipation serrations; 12. Upper cover shell; 13. Lower base plate; 111. Spiral blades; 121. Coolant inlet; 122. Coolant outlet; 131. Guide ribs; 1111. Spiral heterogeneous groove; 1211. Primary filter. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0029] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Please refer to the following: Figures 1 to 3 In some embodiments, the high heat flux density spiral heterogeneous serrated liquid cooling plate 10 includes an upper cover shell 12, a lower substrate 13, and a plurality of heat dissipation serrations 11; the bottom of the upper cover shell 12 is provided with a downward-opening accommodating cavity; the lower substrate 13 is closed to the upper cover shell; the plurality of heat dissipation serrations 11 are all disposed in the accommodating cavity, and the plurality of heat dissipation serrations 11 are fixedly disposed on the lower substrate 13; the outer wall of the lower substrate 13 is used to contact the high heat flux density device; wherein, the plurality of heat dissipation serrations 11 are all spiral blades 111 extending upward from the bottom of the lower substrate 13. Furthermore, by providing a plurality of heat dissipation serrations 11 in the form of spiral blades 111 extending upward from the bottom on the lower substrate 13, and by forming a accommodating cavity structure with the upper cover shell 12 and the lower substrate 13, the coolant can fully contact the spiral blades 111 when flowing in the cavity, increasing the contact area between the coolant and the heat dissipation serrations, thereby improving the heat exchange efficiency. Compared to the smooth cylindrical heat dissipation teeth used in existing technologies, the spiral blade 111 configuration provides a more complex and more turbulent fluid path, causing the coolant to generate spiral disturbances during flow, effectively improving turbulence intensity and fluid convection heat transfer efficiency, thereby solving the problem of limited heat transfer efficiency of liquid cooling plates in existing technologies.

[0032] Please refer to the following: Figure 3 In some embodiments, the helical blade 111 has helical heterogeneous grooves 1111 on its side. By providing helical heterogeneous grooves 1111 on the side of the helical blade 111, the specific surface area of ​​the heat dissipation teeth 11 can be further increased, resulting in more contact points for the coolant during flow, enhancing local turbulence, and thus improving heat transfer efficiency. Simultaneously, the helical heterogeneous grooves 1111 make the coolant flow path more complex, which can improve the energy transfer efficiency during heat exchange.

[0033] In some embodiments, the cross-section of the spiral heterogeneous groove 1111 is V-shaped or trapezoidal. Furthermore, by setting the cross-section of the spiral heterogeneous groove 1111 to V-shape or trapezoidal, a larger contact sidewall area can be provided. Compared to rectangular or planar grooves, V-shaped and trapezoidal structures can more effectively guide coolant flow, reduce the formation of stagnant zones, and thus further improve overall heat dissipation capacity.

[0034] In some embodiments, the spiral directions of the plurality of spiral blades 111 are different from each other; the spiral blades 111 located on the outer side are configured as clockwise spirals, and the spiral blades 111 located on the inner side are configured as counterclockwise spirals. Furthermore, by arranging the spiral blades 111 in different directions—that is, clockwise spirals on the outer side and counterclockwise spirals on the inner side—the coolant generates reverse rotational disturbances during flow. These disturbances, after mutual interference and superposition, form strong shear and convection disturbances, thereby improving the turbulence efficiency of the coolant in the cavity and the overall heat exchange effect, effectively enhancing heat transfer efficiency.

[0035] In some embodiments, the height of the heat dissipation dents 11 gradually increases or decreases along the height direction to form a flow velocity gradient, thereby improving heat exchange efficiency. Furthermore, by setting heat dissipation dents 11 with gradually varying heights, i.e., gradually increasing or decreasing along the height direction, a coolant flow velocity gradient is formed, thereby changing the heat conduction rate in different areas. This can achieve optimized temperature field distribution inside the liquid cooling plate, avoiding heat concentration or localized insufficient cooling, and helping to maintain the stability and efficiency of the heat exchange system.

[0036] Please refer to the following: Figures 4 to 5 In some embodiments, the lower substrate 13 is provided with flow guide ribs 131, which are staggered with the heat dissipation puncture teeth 11 to guide the coolant to flow along a predetermined path within the accommodating cavity. Furthermore, by providing flow guide ribs 131 on the lower substrate 13 and staggering them with the heat dissipation puncture teeth 11, the flow path of the coolant can be directionally guided, allowing the coolant to flow fully within the cavity along an optimized path, avoiding short circuits or dead zones in the flow channels, effectively improving the uniformity of liquid distribution among the heat exchange units, and enhancing the overall heat dissipation effect.

[0037] Please refer to the following: Figure 5 In some embodiments, the cross-section of the guide rib 131 is semi-circular, triangular, or trapezoidal. The guide rib 131 is used to further disturb the flow direction of the coolant and increase the degree of turbulence. Furthermore, by setting the cross-section of the guide rib 131 to a semi-circular, triangular, or trapezoidal structure, the fluid flow direction can be further disturbed, the degree of local fluid turbulence can be increased, and the contact and heat exchange between the coolant and the surface of the heat dissipation denticles can be more sufficient, effectively enhancing the cooling efficiency of the heat dissipation denticle 11 region.

[0038] Please refer to the following: Figure 1In some embodiments, the upper cover 12 is provided with a coolant inlet 121 and a coolant outlet 122, which are respectively located at both ends of the accommodating cavity. The coolant inlet 121 is used for coolant inflow, and the coolant outlet 122 is used for coolant outflow. By providing a coolant inlet 121 and a coolant outlet 122 on the upper cover 12, located at both ends of the accommodating cavity, the coolant can form a continuous unidirectional flow path, ensuring the heat exchange medium flows continuously and efficiently within the heat dissipation structure. This avoids problems such as liquid stagnation and uneven circulation paths, ensuring overall heat dissipation stability.

[0039] Please refer to the following: Figure 5 In some embodiments, a primary filter 1211 is provided in the coolant inlet 121. The primary filter 1211 is used to block large particulate impurities from entering the receiving cavity and prevent clogging of the heat dissipation puncture teeth 11. Furthermore, by providing a primary filter 1211 in the coolant inlet 121, the coolant can be pre-filtered, effectively blocking large particulate impurities from entering the receiving cavity, avoiding clogging of the heat dissipation puncture teeth 11 or localized fluid short-circuiting, ensuring smooth fluid circulation inside the liquid cooling plate, extending the equipment's service life, and maintaining high-efficiency heat transfer performance.

[0040] Please refer to the following: Figure 1 In some embodiments, the projected area of ​​the upper cover 12 is smaller than the projected area of ​​the lower substrate 13, and the upper cover 12 and the lower substrate 13 are connected by laser welding or brazing. Furthermore, by setting the projected area of ​​the upper cover 12 to be smaller than that of the lower substrate 13, and using laser welding or brazing to connect the two, a compact and lightweight structure can be provided while ensuring good sealing and structural strength at the connection point. This effectively prevents coolant leakage, improves the reliability and safety of the high heat flux density spiral heterogeneous serrated liquid cooling plate 10, and further enhances the stability of the overall heat dissipation system.

[0041] In some embodiments, the upper cover shell 12 and the lower substrate 13 are both made of pure copper, copper alloy or aluminum alloy composite material, manufactured by a serration process, and can be assembled using graphite tooling.

[0042] In some embodiments, the quality inspection procedures for the high heat flux density spiral heterogeneous serrated liquid cooling plate 10 include, but are not limited to, ultrasonic testing, pressure testing, dimensional inspection, or thermal testing.

[0043] In summary, this application provides a high heat flux density spiral heterogeneous serrated liquid cooling plate, comprising: a plurality of heat dissipation serrations; an upper cover shell, the bottom of which has a downwardly opening receiving cavity; a lower substrate, which covers the upper cover shell; the plurality of heat dissipation serrations are all disposed in the receiving cavity and fixedly disposed on the lower substrate; the outer wall of the lower substrate is used to contact the high heat flux density device; wherein, the plurality of heat dissipation serrations are spiral blades extending upward from the bottom of the lower substrate; thereby, by providing a plurality of heat dissipation serrations in the form of spiral blades extending upward from the bottom on the lower substrate, and by forming a structure with a receiving cavity through the upper cover shell and the lower substrate, the coolant can fully contact the spiral blades when flowing in the cavity, increasing the contact area between the coolant and the heat dissipation serrations, thereby improving the heat exchange efficiency. Compared to the smooth cylindrical heat dissipation teeth used in existing technologies, the spiral blade configuration provides a more complex and turbulent fluid path, causing the coolant to generate spiral disturbances during flow, effectively improving turbulence intensity and fluid convection heat transfer efficiency, thereby solving the problem of limited heat transfer efficiency of liquid cooling plates in existing technologies.

[0044] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A high heat flux density spiral heterogeneous serrated liquid cooling plate for heat dissipation in high heat flux density equipment, characterized in that, The high heat flux density spiral heterogeneous toothed liquid cooling plate includes: Several heat dissipation denticles; The upper cover shell has a downward-opening receiving cavity at its bottom; The lower substrate is covered by the upper cover shell; a plurality of heat dissipation punctures are disposed in the accommodating cavity and the plurality of heat dissipation punctures are fixedly disposed on the lower substrate; the outer wall of the lower substrate is used to contact the high heat flux density device. In this embodiment, several of the heat dissipation dents are formed by spiral blades extending upward from the bottom of the lower substrate.

2. The high heat flux density spiral heterogeneous toothed liquid cooling plate according to claim 1, characterized in that, The helical blades are provided with helical heterogeneous grooves on their sides.

3. The high heat flux density spiral heterogeneous toothed liquid cooling plate according to claim 2, characterized in that, The cross-section of the spiral heterogeneous groove is V-shaped or trapezoidal.

4. The high heat flux density spiral heterogeneous toothed liquid cooling plate according to claim 2, characterized in that, The spiral directions of the helical blades are different from each other; the spiral blades located on the outer side are configured to rotate clockwise, and the spiral blades located on the inner side are configured to rotate counterclockwise.

5. The high heat flux density spiral heterogeneous toothed liquid cooling plate according to claim 3, characterized in that, The height of the heat dissipation denticles gradually increases or decreases along the height direction to form a flow velocity gradient, thereby improving heat exchange efficiency.

6. The high heat flux density spiral heterogeneous toothed liquid cooling plate according to claim 4, characterized in that, The lower substrate is provided with guide ribs, which are arranged alternately with the heat dissipation denticles to guide the coolant to flow along a set path in the accommodating cavity.

7. The high heat flux density spiral heterogeneous toothed liquid cooling plate according to claim 6, characterized in that, The cross-section of the guide rib is semi-circular, triangular, or trapezoidal. The guide rib is used to further disturb the flow direction of the coolant and increase the degree of turbulence.

8. The high heat flux density spiral heterogeneous toothed liquid cooling plate according to claim 6, characterized in that, The upper cover is provided with a coolant inlet and a coolant outlet, which are respectively located at both ends of the accommodating cavity; the coolant inlet is for coolant to flow in, and the coolant outlet is for coolant to flow out.

9. The high heat flux density spiral heterogeneous toothed liquid cooling plate according to claim 8, characterized in that, A primary filter screen is provided in the coolant inlet. The primary filter screen is used to block large particles of impurities from entering the receiving cavity and prevent clogging of the heat dissipation teeth.

10. The high heat flux density spiral heterogeneous toothed liquid cooling plate according to claim 7, characterized in that, The projected area of ​​the upper cover is smaller than that of the lower substrate, and the upper cover and the lower substrate are connected by laser welding or brazing.

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