Data center liquid cooling plate

Abstract

The invention provides a data center liquid cooling plate, and relates to the technical field of liquid cooling heat dissipation, the data center liquid cooling plate is internally provided with a shunting channel, a confluence channel and a plurality of bionic flow channels, and the plurality of bionic flow channels are connected in parallel between the shunting channel and the confluence channel to form a flow channel system for a cooling medium to flow; the inner wall of each bionic flow channel is provided with bionic textures simulating the skin surface of the dolphin, and the cooling medium forms a vortex when flowing through the bionic textures; the side edge of each bionic flow channel is further provided with a plurality of branch flow channels, the branch flow channels are sequentially arranged in the length direction of the bionic flow channels, the two ends of each branch flow channel are connected with the bionic flow channels, the two ends of each branch flow channel are located on the upstream portion and the downstream portion of the cooling medium respectively, and the branch flow channels are used for dividing the resistance of the cooling medium in the bionic flow channels. The data center liquid cooling plate provided by the invention can strengthen the heat transfer performance of the cooling medium and reduce the flow resistance, so that the temperature of the data center liquid cooling plate is uniformly distributed.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cooling and heat dissipation, and in particular to a liquid cooling plate for a data center. Background Art

[0002] Data centers store IT information technology equipment such as computing, storage, and networking. A large amount of heat is generated during the operation of the data center. In order to maintain the normal operation of the equipment, data centers now often use liquid cooling plate cooling technology to cool servers. At present, high-performance chips are widely used in data centers. High-performance electronic chips have higher operating speeds, but the high heat flux density generated by higher-speed operation poses challenges to the thermal management of chips and the liquid cooling technology of data centers.

[0003] Microchannel liquid cooling plates have a high heat transfer coefficient and a significant cooling effect on electronic chips with high heat flux density. Therefore, they have been widely used in the field of liquid cooling in data centers. However, traditional microchannel liquid cooling plates have problems such as high pressure drop and uneven temperature. Some patents have proposed some microchannel liquid cooling plate structures for the cooling of electronic components. For example, patent CN219016929U designs a server liquid cooling plate structure, including a main body, a plurality of flow channels are provided on the main body, and the plurality of flow channels are arranged in parallel, and the flow channels pass through the main body from the end of the main body, and partition ribs are provided between two adjacent flow channels. However, the flow resistance of the flow channel of the cold plate structure is relatively large, and the flow channel turbulence effect is poor, and the heat dissipation efficiency is low. Patent CN212209693U also designs a liquid cold plate structure in the form of a stamped cold plate, including a lower base plate, an upper base plate and a copper tube. An S-shaped trough is opened on the top of the lower base plate, and a long partition hole is opened on the right side of the lower base plate. The copper tube is located in the S-shaped trough and the heating trough. The end of the copper tube extending out of the lower base plate on the left side is provided with a liquid inlet pipe joint, and the end of the copper tube extending out of the lower base plate on the right side is provided with a liquid outlet pipe joint. However, the flow channel length of this cold plate structure is relatively long, the flow resistance is relatively large, the temperature uniformity of the cold plate is poor, and the flow channel turbulence effect is small, and the heat transfer performance is weak.

[0004] In view of this, the inventor has designed a data center liquid cooling plate based on many years of production design experience in this field and related fields and after repeated experiments, in order to solve the problems existing in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a data center liquid cooling plate, which can enhance the heat transfer performance of the cooling medium and reduce the flow resistance, so that the temperature of the data center liquid cooling plate is evenly distributed.

[0006] To achieve the above-mentioned objectives, the present invention proposes a data center liquid cooling plate, wherein a diversion channel, a confluence channel and a plurality of bionic flow channels are opened in the data center liquid cooling plate, and the plurality of bionic flow channels are connected in parallel between the diversion channel and the confluence channel to form a flow channel system for the flow of cooling medium, and the inner wall of each bionic flow channel has a bionic texture simulating the surface of dolphin skin, and the cooling medium forms a vortex when flowing through the bionic texture.

[0007] Compared with the prior art, the present invention has the following characteristics and advantages: The data center liquid cooling plate proposed in the present invention evenly diverts the cooling medium to multiple bionic flow channels through a diversion channel. The inner wall of each bionic flow channel has a bionic texture that simulates the surface of dolphin skin. The bionic texture simulates the microstructure of dolphin skin through the principle of bionics. When the cooling medium flows through the bionic texture, tiny vortices are formed, which not only increases the contact area between the cooling medium and the inner wall of the bionic flow channel, but also improves the heat exchange efficiency; at the same time, it also reduces the boundary layer thickness of the cooling medium, enhances the disturbance ability of the cooling medium in the bionic flow channel, ensures that the temperature distribution of the cooling medium in the bionic flow channel is more uniform, thereby significantly improving the heat dissipation efficiency of the data center liquid cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0009] Figure 1 A schematic diagram of the flow channel system of the data center liquid cooling plate proposed by the present invention; Figure 2 It is a structural schematic diagram of the cover plate in the present invention; Figure 3 It is a structural schematic diagram of the bionic texture in the present invention.

[0010] Description of Reference Numerals 100. Data center liquid cooling plate; 110, bottom plate; 111, first screw hole; 112, second screw hole; 113, third screw hole; 114, fourth screw hole; 120, cover plate; 121, first bolt; 122, second bolt; 123, third bolt; 124, fourth bolt; 125, fifth screw hole; 126, sixth screw hole; 127, seventh screw hole; 128, eighth screw hole; 10. Diversion channel; 11. Cooling medium inlet; 12. Diverter hole; 20. Confluence channel; 21. Cooling medium outlet; 22. Confluence hole; 30. Bionic flow channel; 31. Bionic texture; 311, groove; 312, protrusion; 40. Branch flow channel. DETAILED DESCRIPTION

[0011] The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should all be considered to belong to the scope of the present invention.

[0012] like Figure 1 As shown, the present invention proposes a data center liquid cooling plate 100, in which a diversion channel 10, a confluence channel 20 and a plurality of bionic flow channels 30 are opened. The plurality of bionic flow channels 30 are connected in parallel between the diversion channel 10 and the confluence channel 20 to form a flow channel system for the flow of cooling medium. The inner wall of each bionic flow channel 30 has a bionic texture 31 simulating the surface of dolphin skin, and the cooling medium forms a vortex when flowing through the bionic texture 31.

[0013] The data center liquid cooling plate 100 proposed in the present invention evenly diverts the cooling medium to multiple bionic flow channels 30 through the diversion channel 10. The inner wall of each bionic flow channel 30 has a bionic texture 31 that simulates the surface of dolphin skin. The bionic texture 31 simulates the microstructure of dolphin skin through the principle of bionics. When the cooling medium flows through the bionic texture 31, tiny vortices are formed, which not only increases the contact area between the cooling medium and the inner wall of the bionic flow channel 30 and improves the heat exchange efficiency; at the same time, it also reduces the boundary layer thickness of the cooling medium, enhances the disturbance ability of the cooling medium in the bionic flow channel 30, ensures that the temperature distribution of the cooling medium in the bionic flow channel 30 is more uniform, and significantly improves the heat dissipation efficiency of the data center liquid cooling plate 100.

[0014] In an optional embodiment of the present invention, Figure 3 As shown, the bionic texture 31 includes a plurality of periodically distributed grooves 311 and a plurality of protrusions 312. The grooves 311 are similar to the micro grooves of dolphin skin, which helps to reduce the boundary layer thickness of the cooling medium, so that the cooling medium can be more evenly distributed on the surface of the flow channel, thereby improving the heat dissipation effect. The protrusions 312 are similar to the irregular protrusions on the surface of dolphin skin, which can increase the contact area between the flow channel surface and the cooling medium, enhance the disturbance ability of the cooling medium in the bionic flow channel 30, and thus increase the heat exchange efficiency.

[0015] In an optional example, a protrusion 312 is disposed between every two adjacent grooves 311 .

[0016] In an optional embodiment of the present invention, a plurality of branch flow channels 40 are provided on the side of each bionic flow channel 30, and the plurality of branch flow channels 40 are sequentially arranged along the length direction of the bionic flow channel 30, and both ends of each branch flow channel 40 are connected to the bionic flow channel 30, and both ends of each branch flow channel 40 are respectively located upstream and downstream of the cooling medium, and the branch flow channels 40 are used to shunt the resistance of the cooling medium in the bionic flow channel 30. With the above structure, the cooling medium is shunted by a plurality of bionic flow channels 30, so that the flow resistance of the cooling medium in different areas of the bionic flow channel 30 can be kept consistent, effectively avoiding the problems of uneven flow rate and uneven temperature of the cooling medium, and finally ensuring that the cooling medium can be more evenly distributed in various areas of the data center liquid cooling plate 100 when flowing through the flow channel system of the data center liquid cooling plate 100, ensuring that the heat can be efficiently and evenly taken away.

[0017] In an optional example of this embodiment, multiple branch channels 40 are symmetrically arranged on both sides of each bionic channel 30. With the above structure, the cooling medium is divided into two streams through the two symmetrically arranged branch channels 40, and then merges with the ends of the branch channels 40 to the bionic channel 30. The cooling medium mixed in the bionic channel 30 is then diverted to the next two branch channels 40, and so on. Through the design of multiple branch channels 40, the cooling medium is evenly distributed multiple times, effectively avoiding local overheating.

[0018] In an optional example, each branch flow channel 40 is arc-shaped, so that the cooling medium flows more smoothly in the branch flow channel 40 .

[0019] Furthermore, a plurality of branch flow channels 40 are sequentially arranged on the side of the bionic flow channel 30 to form a B-shaped structure, so as to achieve uniform flow division and merging of the cooling medium.

[0020] In an optional example, the widths of the branch flow channels 40 are the same, further ensuring uniform flow distribution of the cooling medium.

[0021] In an optional embodiment of the present invention, the diverter channel 10 has a cooling medium inlet 11, and the diverter channel 10 is provided with a plurality of diverter holes 12, each bionic flow channel 30 is connected to the diverter channel 10 through the corresponding diverter hole 12, and the converging channel 20 has a cooling medium outlet 21, and the converging channel 20 is provided with a plurality of converging holes 22, each bionic flow channel 30 is connected to the converging channel 20 through the converging holes 22. With the above structure, the cooling medium flows into the diverter channel 10 through the cooling medium inlet 11, and flows evenly to the bionic flow channel 30 and the branch flow channel 40 through the plurality of diverter holes 12. After the cooling medium absorbs the heat on the surface of the data center liquid cooling plate 100, it flows to the converging channel 20 through the plurality of converging holes 22, and finally flows out through the cooling medium outlet 21, and the cycle is repeated to complete the cooling process.

[0022] In an optional example of this embodiment, the diversion channel 10 and the confluence channel 20 are arranged in parallel and spaced apart, a plurality of diversion holes 12 are sequentially arranged along the length direction of the diversion channel 10 , and a plurality of confluence holes 22 are sequentially arranged along the length direction of the confluence channel 20 .

[0023] In an optional example, the apertures of the plurality of diversion holes 12 and the apertures of the plurality of confluence holes 22 are the same.

[0024] In another optional example, the apertures of the plurality of flow-dividing holes 12 and the apertures of the plurality of flow-collecting holes 22 decrease gradually along the flow direction of the cooling medium to balance the pressure distribution in the flow channel system.

[0025] In an optional embodiment of the present invention, Figure 1 , Figure 2 As shown, the data center liquid cooling plate 100 includes a base plate 110 and a cover plate 120. One surface of the base plate 110 is a flow channel plane. The diversion channel 10, the confluence channel 20 and a plurality of bionic flow channels 30 are all opened on the flow channel plane. The cover plate 120 is covered on the flow channel plane and is sealed and fixedly connected to the base plate 110.

[0026] In an optional example of this embodiment, the base plate 110 and the cover plate 120 are sealed and fixed together by a bolt structure.

[0027] In an optional example, the outer dimensions of the bottom plate 110 are the same as the outer dimensions of the cover plate 120 .

[0028] Furthermore, the base plate 110 has a first screw hole 111 at the upper left corner, a second screw hole 112 at the upper right corner, a third screw hole 113 at the lower right corner, and a fourth screw hole 114 at the lower left corner; the cover plate 120 has a fifth screw hole 125 at the upper left corner, a sixth screw hole 126 at the upper right corner, a seventh screw hole 127 at the lower right corner, and an eighth screw hole 128 at the lower left corner. A first bolt 121 is provided at the upper left corner of the cover plate 120, a second bolt 122 is provided at the upper right corner, a third bolt 123 is provided at the lower right corner, and a fourth bolt 124 is provided at the lower left corner; the first bolt 121 is connected to the first screw hole 111 through the fifth screw hole 125, the second bolt 122 is connected to the second screw hole 112 through the sixth screw hole 126, the third bolt 123 is connected to the third screw hole 113 through the seventh screw hole 127, and the fourth bolt 124 is connected to the fourth screw hole 114 through the eighth screw hole 128, thereby tightly combining the base plate 110 and the cover plate 120 together to form a closed flow channel system.

[0029] In an optional embodiment of the present invention, the base plate 110 and the cover plate 120 are made of aluminum, copper or a thermally conductive composite material, which has high thermal conductivity and improves the heat dissipation efficiency of the data center liquid cooling plate 100.

[0030] Please refer to Figure 1 and Figure 2 Now, the specific operation process of the data center liquid cooling plate 100 proposed by the present invention is described in detail in conjunction with an embodiment.

[0031] The cooling medium flows into the diversion channel 10 through the cooling medium inlet 11, and flows evenly to the bionic flow channel 30 and the branch flow channel 40 through a number of parallel arranged diversion holes 12. Through the design of the branch flow channel 40, the cooling medium is evenly distributed in the bionic flow channel 30 to avoid local overheating; the bionic texture 31 increases the contact area between the cooling medium and the inside of the bionic flow channel 30, and also has a certain disturbing effect on the flow of the cooling medium, while reducing the boundary layer thickness and improving the heat exchange efficiency. After the cooling medium absorbs a large amount of heat from the surface of the base plate 110 and the surface of the cover plate 120, it flows to the confluence channel 20 through a number of parallel arranged confluence holes 22, and finally flows out through the cooling medium outlet 21. This cycle completes the cooling process, thereby reducing the flow resistance of the cooling medium in the flow channel system, ensuring uniform temperature distribution of the data center liquid cooling plate 100, and enhancing the disturbance ability of the cooling medium in the flow channel system, significantly improving the heat dissipation efficiency of the data center liquid cooling plate 100.

[0032] The detailed explanation of the above-mentioned embodiments is only intended to explain the present invention so as to facilitate a better understanding of the present invention. However, these descriptions cannot be interpreted as limitations on the present invention for any reason. In particular, the various features described in different embodiments may also be arbitrarily combined with each other to form other embodiments. Unless there is a clear description to the contrary, these features should be understood to be applicable to any embodiment and are not limited to the described embodiments.

Claims

1. A data center liquid cooling plate, characterized in that: The data center liquid cooling plate is provided with a shunt channel, a confluence channel and a plurality of bionic flow channels, and the plurality of bionic flow channels are connected in parallel between the shunt channel and the confluence channel to form a flow channel system for the flow of cooling medium, and the inner wall of each bionic flow channel has a bionic texture simulating the surface of dolphin skin, and the cooling medium forms a vortex when flowing through the bionic texture; A plurality of branch flow channels are also provided on the side of each of the bionic flow channels, and the plurality of branch flow channels are arranged in sequence along the length direction of the bionic flow channel. Both ends of each of the branch flow channels are connected to the bionic flow channel, and both ends of each of the branch flow channels are respectively located upstream and downstream of the cooling medium. The branch flow channels are used to divert the resistance of the cooling medium in the bionic flow channel.

2. The data center liquid cooling panel according to claim 1, characterized in that: The bionic texture includes a plurality of grooves and a plurality of protrusions which are distributed periodically.

3. The data center liquid cooling panel according to claim 1, characterized in that: A plurality of branch flow channels are symmetrically arranged on both sides of each bionic flow channel.

4. The data center liquid cooling panel according to claim 1 or 2, characterized in that: Each of the branch flow channels is in an arc shape.

5. The data center liquid cooling panel according to claim 1 or 2, characterized in that: The widths of the branch flow channels are the same.

6. The data center liquid cooling panel according to claim 1, wherein: The diversion channel has a cooling medium inlet, and the diversion channel is provided with a plurality of diversion holes, and each of the bionic flow channels is connected to the diversion channel through the diversion holes. The confluence channel has a cooling medium outlet, and the confluence channel is provided with a plurality of confluence holes, and each of the bionic flow channels is connected to the confluence channel through the confluence holes.

7. The data center liquid cooling panel according to claim 6, characterized in that: The diverter channel and the converging channel are arranged in parallel and spaced apart, a plurality of the diverter holes are sequentially arranged along the length direction of the diverter channel, and a plurality of the converging holes are sequentially arranged along the length direction of the converging channel.

8. The data center liquid cooling panel according to claim 1, wherein: The data center liquid cooling plate includes a base plate and a cover plate. One surface of the base plate is a flow channel plane. The diversion channel, the confluence channel and multiple bionic flow channels are all opened on the flow channel plane. The cover plate is arranged on the flow channel plane and is sealed and fixedly connected to the base plate.

9. The data center liquid cooling panel according to claim 8, characterized in that: The bottom plate and the cover plate are made of aluminum, copper or a thermally conductive composite material.

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