Disc type micro-channel liquid cooling plate, heat dissipation module and equipment
The design of the disc-type microchannel liquid cooling plate solves the problem of insufficient heat dissipation of rectangular heat sinks. The use of spiral fins and flow channel structure achieves a more efficient heat dissipation effect, making it particularly suitable for LED and other equipment.
Patent Information
- Application Number
- CN202520077956.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing rectangular heat sinks cannot fully utilize their heat dissipation capabilities, especially for devices such as LEDs.
It adopts a disc-type microchannel liquid cooling plate design, which includes a liquid cooling base plate, spiral fins and a top cover. It is equipped with a first flow channel, a second flow channel and a third flow channel. The flow channel structure is optimized to enhance the heat exchange area and flow, and promote the mixing and turbulence of the cooling medium.
It improves heat dissipation efficiency, achieves a more uniform temperature distribution and a higher convective heat transfer coefficient, and enhances the heat dissipation performance of the radiator.
Smart Images
Figure CN223798536U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid cooling plate technology, and in particular to a disc-type microchannel liquid cooling plate, heat dissipation module and equipment. Background Technology
[0002] As packaging technology advances, chip sizes are shrinking, leading to higher and more concentrated heat flux, which in turn makes them more prone to generating high temperatures and hot spots. Therefore, cooling electronic devices remains a long-standing challenge in packaging design, involving the selection of cooling methods and materials, as well as the design of heat sinks. Compared to air, water has higher thermal conductivity and specific heat capacity, making forced convection liquid cooling more effective at removing waste heat. Furthermore, liquid cooling does not use fans like active air cooling, resulting in significantly less noise. Additionally, the high thermal conductivity and high surface-to-volume ratio of microchannel heat sinks enable them to dissipate substantial amounts of heat from electronic chips.
[0003] Current cold plate liquid-cooled heat sinks typically have fluid inlets and outlets on the left and right sides, respectively. For example, the microchannel heat sink designed in patent CN118890858A features several four-pointed star-shaped protrusions arranged in a crisscross pattern to form several expanding and contracting microchannels, increasing the heat exchange area and improving heat exchange performance. However, investigation revealed that most patented microchannel heat sink designs are primarily designed for heat sinks with rectangular bases. For certain devices (such as LEDs), heat sinks with rectangular bases cannot fully utilize their heat dissipation capabilities.
[0004] It should be noted that the information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] To address the technical problem that conventional rectangular heat sinks cannot fully utilize their heat dissipation effect, this invention provides a disc-type microchannel liquid cooling plate. This disc-type microchannel liquid cooling plate includes a liquid cooling base plate, several spiral fins, and a top cover. The spiral fins are arranged at intervals on the liquid cooling base plate to form several first flow channels for the cooling medium to circulate. The top cover is connected to the liquid cooling base plate and has an injection port and an outlet port. The injection port and the outlet port are respectively connected to the two ends of the first flow channels.
[0006] Several cuts are provided along the radial direction of the helical ribs to form several second flow channels.
[0007] Furthermore, the second flow channel is arc-shaped.
[0008] Furthermore, the curvature of the second flow channel is 70° to 90°.
[0009] Furthermore, the curvature of the second flow channel is 80° to 90°.
[0010] Furthermore, the injection port is located at the center of the top cover, and the outlet is located near the outer periphery of the top cover.
[0011] Furthermore, the disc-shaped microchannel liquid cooling plate also includes a third flow channel, which is connected to the first flow channel, the second flow channel and the liquid outlet respectively.
[0012] Furthermore, the number of spiral ribs is 8 to 16.
[0013] Furthermore, the number of the second flow channels is 8 to 16.
[0014] Furthermore, this utility model also provides a heat dissipation module, comprising the disc-shaped microchannel liquid cooling plate described in any one of the above-mentioned embodiments.
[0015] Furthermore, this utility model also provides a device comprising the heat dissipation module described above.
[0016] Based on the above, the present invention provides a disc-type microchannel liquid cooling plate, heat dissipation module and device. Compared with the prior art, the disc-type liquid cooling base plate is more in line with the heat dissipation requirements of devices such as LEDs. At the same time, the first flow channel and the second flow channel are set on the liquid cooling base plate, which not only increases the heat exchange area, but also generates secondary flow, promotes the mixing of cooling media between different first flow channels at the cut, enhances turbulence, thereby destroying the boundary layer at the cut of the first flow channel, improving the convective heat transfer coefficient and providing better heat dissipation 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Unless otherwise specified, the positional relationships shown in the drawings in the following description are based on the direction in which the components are drawn in the figures.
[0018] Figure 1 An exploded structural diagram of a disc-type microchannel liquid cooling plate provided in an embodiment of the present invention;
[0019] Figure 2 This is a schematic diagram of the structure of the first flow channel and the second flow channel provided in an embodiment of the present invention.
[0020] Figure label:
[0021] Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0023] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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 utility model. 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 utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof mean "at least comprising."
[0024] Please see Figure 1 and Figure 2 , Figure 1 An exploded structural diagram of a disc-type microchannel liquid cooling plate provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the first flow channel and the second flow channel provided in an embodiment of the present invention.
[0025] To address the technical problem that conventional rectangular heat sinks cannot fully utilize their heat dissipation effect, or to achieve at least one or more of the aforementioned advantages, an embodiment of this utility model provides a disc-type microchannel liquid cooling plate. As shown in the figure, this disc-type microchannel liquid cooling plate includes a liquid cooling base plate 10, a top cover 20, and a plurality of spiral ribs 30.
[0026] The liquid-cooled base plate 10 is disc-shaped, which better conforms to the shape of LED and other equipment, and can fully exert the heat dissipation effect. The top cover 20 covers the liquid-cooled base plate 10. The top cover 20 is provided with a liquid injection port 40 and a liquid outlet 50. The cooling medium can be injected into the liquid-cooled base plate 10 through the liquid injection port 40 for heat exchange, and then flow out of the liquid-cooled base plate 10 through the liquid outlet 50 to complete the heat dissipation cycle.
[0027] For the disc-type liquid cooling base plate 10, the heat points of electronic chips are usually concentrated in the middle part. Therefore, the liquid inlet 40 is set at the center of the top cover 20, and the liquid outlet 50 is close to the outer periphery of the top cover 20. That is, when the cooling medium is injected, the cooling medium first flows into the middle part where the heat is concentrated, then flows to the outer periphery, and flows out through the liquid outlet 50 to complete the heat dissipation cycle. This makes the overall temperature distribution of the liquid cooling base plate 10 more uniform and avoids large temperature differences.
[0028] A plurality of spiral fins 30 are arranged at intervals on the liquid-cooled base plate 10 to form a plurality of first flow channels 60 for the flow of cooling medium. In a specific implementation, the plurality of spiral fins 30 are arranged at intervals on the liquid-cooled base plate 10 to form a plurality of spiral first flow channels 60. The spiral fins 30 can increase the contact area between the liquid-cooled base plate 10 and the cooling medium, thereby improving heat dissipation efficiency.
[0029] The two ends of the first flow channel 60 are connected to the injection port 40 and the outlet port 50, respectively. Cooling medium can be injected into the liquid-cooled base plate 10 through the injection port 40 and flow into different first flow channels 60 for heat exchange. Then, it flows out of the liquid-cooled base plate 10 through the outlet port 50, completing the heat dissipation cycle.
[0030] Based on the above, several cuts are provided along the radial direction of several helical ribs 30 to form several second flow channels 70. In specific implementation, cuts are made along the radial direction of the helical ribs 30 to form several arc-shaped second flow channels 70. The second flow channels 70 are connected to the first flow channels 60. Taking two adjacent first flow channels 60 as an example, when the cooling medium flows through the intersection of the first flow channel 60 and the second flow channel 70, secondary flow can be generated, which can promote the mixing and exchange of cooling medium between different first flow channels 60, enhance turbulence, thereby destroying the boundary layer of the cooling medium in the first flow channel 60, improving the convective heat transfer coefficient, and providing better heat dissipation efficiency.
[0031] Taking the overall liquid cooling base plate 10 as an example, the second flow channel 70 shortens the length of the first flow channel 60, which can significantly reduce the total pressure drop in the first flow channel 60, making the pressure distribution of the cooling medium more stable and reducing pressure loss.
[0032] In some preferred embodiments, the curvature of the second flow channel 70 is 70° to 90°. This achieves a better balance in terms of flow resistance, heat dissipation area, and fluid flow state, thereby realizing the best heat dissipation effect.
[0033] Based on the above, the curvature of the second flow channel 70 is 80° to 90°. Further, the curvature of the second flow channel 70 is 85° to 90°, achieving a better balance in terms of flow resistance, heat dissipation area, and fluid flow state, thereby achieving optimal heat dissipation.
[0034] In some preferred embodiments, the disc-shaped microchannel liquid cooling plate further includes a third flow channel 80. The third flow channel 80 connects the first flow channel 60, the second flow channel 70, and the liquid outlet 50. In specific implementation, the third flow channel 80 is located at the end of the spiral fin 30 away from the liquid injection port 40, that is, the spiral fin 30 does not contact the inner sidewall of the liquid cooling base plate 10, so that after the cooling medium flows out from the first flow channel 60 and the second flow channel 70, it can flow into the third flow channel 80 and flow along the third flow channel 80 to the liquid outlet 50, and then flow out of the liquid cooling base plate 10, completing the heat dissipation cycle.
[0035] Preferably, one of the spiral ribs 30 extends from one end near the liquid outlet 50 to the side edge of the liquid outlet 50, so that the third flow channel 80 forms a unidirectional flow channel. When the cooling medium flows into the third flow channel 80, it can only flow around in one direction, thereby achieving the technical effects of enhancing the uniformity of heat exchange, optimizing the internal pressure distribution of the cooling medium in the third flow channel 80, and promoting the mixing and turbulence of the cooling medium.
[0036] In some preferred embodiments, the number of spiral ribs 30 is 8 to 16. The number of second flow channels 70 is 8 to 16. Of course, in specific implementations, the number of spiral ribs 30 and the number of second flow channels 70 can be adjusted according to the diameter of the liquid cooling base plate 10, which will not be elaborated here.
[0037] In some preferred embodiments, the present invention also provides a heat dissipation module comprising the disc-shaped microchannel liquid cooling plate described in any one of the above embodiments.
[0038] In some preferred embodiments, the present invention also provides a device comprising the heat dissipation module described above.
[0039] In summary, the disc-shaped microchannel liquid cooling plate, heat dissipation module, and device provided by this utility model, compared with the prior art, adopts a disc-shaped liquid cooling base plate, which is more in line with the heat dissipation requirements of devices such as LEDs. At the same time, the first and second flow channels set on the liquid cooling base plate not only increase the heat exchange area, but also generate secondary flow, promote the mixing of cooling media between different first flow channels at the cut, enhance turbulence, thereby destroying the boundary layer at the cut of the first flow channel, improving the convective heat transfer coefficient, and providing better heat dissipation efficiency.
[0040] Although this document uses terms such as spiral ribs and slits frequently, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.
[0041] Furthermore, those skilled in the art should understand that although many problems exist in the prior art, each embodiment or technical solution of this utility model can be improved in only one or a few aspects, without necessarily solving all the technical problems listed in the prior art or background art simultaneously. Those skilled in the art should understand that any content not mentioned in a claim should not be construed as a limitation on that claim.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A disc-type microchannel liquid cooling plate, characterized in that: include Liquid-cooled base plate; A plurality of spiral ribs are arranged at intervals on the liquid-cooled base plate to form a plurality of first flow channels for the flow of cooling medium. A top cover is connected to the liquid-cooled base plate. The top cover is provided with an injection port and an outlet port, which are respectively connected to the two ends of the first flow channel. Several cuts are provided along the radial direction of the helical ribs to form several second flow channels.
2. The disc-type microchannel liquid cooling plate according to claim 1, characterized in that: The second flow channel is arc-shaped.
3. The disc-type microchannel liquid cooling plate according to claim 2, characterized in that: The curvature of the second flow channel is 70° to 90°.
4. The disc-type microchannel liquid cooling plate according to claim 3, characterized in that: The curvature of the second flow channel is 80° to 90°.
5. The disc-type microchannel liquid cooling plate according to claim 1, characterized in that: The injection port is located at the center of the top cover, and the outlet is located near the outer periphery of the top cover.
6. The disc-type microchannel liquid cooling plate according to claim 5, characterized in that: The disc-shaped microchannel liquid cooling plate also includes a third flow channel, which is connected to the first flow channel, the second flow channel and the liquid outlet respectively.
7. The disc-type microchannel liquid cooling plate according to claim 1, characterized in that: The number of spiral ribs is 8 to 16.
8. The disc-type microchannel liquid cooling plate according to claim 1, characterized in that: The number of the second flow channels is 8 to 16.
9. A heat dissipation module, characterized in that: It includes a disc-shaped microchannel liquid cooling plate as described in any one of claims 1-8.
10. A device, characterized in that: It includes the heat dissipation module as described in claim 9.