A data center liquid cooling plate

Abstract

The present invention discloses a data center liquid cooling plate, comprising a shell, a chamber having a first end and a second end is formed inside the shell, a plurality of partition ribs are arranged side by side in the chamber, a cooling channel is formed between two adjacent partition ribs, the cooling medium in the cooling channel flows in a direction from the first end to the second end, a cooling medium inlet and a cooling medium outlet are respectively arranged at the first end and the second end, a flow distribution structure for distributing the cooling medium to each cooling channel is arranged between the cooling medium inlet and the cooling channel; a plurality of baffles are arranged at intervals in the cooling channel along the extension direction thereof, the ends of which abut between the partition ribs, the height of the baffles along the direction from the top wall to the bottom wall of the shell being less than the height of the partition ribs; the partition ribs comprise a plurality of M-shaped rib segments connected in sequence from the first end to the second end, each M-shaped rib segment having a middle portion and side portions symmetrically connected to both ends of the middle portion, and so on. The data center liquid cooling plate of the present application has the advantage of strong heat exchange capacity.

Description

Technical Field

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

[0002] The development of high-performance electronic chips allows us to experience higher operating speeds. At the same time, the high heat flux density generated by high-performance electronic chips also poses a challenge to chip thermal management. Data centers store computing, storage, network and other IT information technology equipment. These devices generate a lot of heat during the operation of the data center. In order to maintain the normal operation of the equipment, existing data centers often use liquid cooling plate cooling technology to cool the servers.

[0003] However, current liquid cooling plates have problems such as high pressure drop and uneven temperature, or have relatively long flow channel length, relatively large fluid flow resistance, poor temperature uniformity, poor flow disturbance effect of the turbulence structure in the flow channel, and weak heat transfer performance. Therefore, there is an urgent need for a new type of liquid cooling plate with relatively small fluid flow resistance and uniform temperature distribution to meet the server cooling needs of data centers. Summary of the invention

[0004] The object of the present invention is to provide a data center liquid cooling plate to solve the problem that the existing liquid cooling plate cannot take into account both low fluid flow resistance and uniform temperature distribution.

[0005] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0006] The present invention provides a data center liquid cooling plate, comprising a shell, wherein a chamber having a first end and a second end is formed inside the shell, a plurality of partition ribs are arranged side by side in the chamber, a cooling channel is formed between two adjacent partition ribs, a cooling medium in the cooling channel flows in a direction from the first end to the second end, a cooling medium inlet and a cooling medium outlet are respectively arranged at the first end and the second end, a cooling medium flow distribution area is formed between the cooling medium inlet and the cooling channel, a cooling medium flow concentration area is formed between the cooling medium outlet and the cooling channel, a flow distribution structure for distributing the cooling medium to each of the cooling channels is arranged in the cooling medium flow distribution area; along the cooling channel The cooling medium flows in the channel, and a plurality of baffles are arranged in the cooling channel at intervals, with the ends abutting against the partition ribs, and the height of the baffles is less than the height of the partition ribs along the direction from the top wall to the bottom wall of the shell; the partition ribs include a plurality of M-shaped rib segments connected in sequence from the first end to the second end, each of the M-shaped rib segments having a middle portion and side portions symmetrically connected to both ends of the middle portion, the side portions are arc portions with a circumferential angle of not less than 180°, and the middle portion is an arc portion with a circumferential angle of not more than 180°, the openings of the side portions and the middle portion are respectively directed to the two adjacent cooling channels, and the radius of the side portions is at least 6 times the radius of the middle portion.

[0007] Preferably, along the flow direction of the cooling medium in the cooling channel, the chamber has an inlet side wall that gradually expands in an eight-shaped shape in the cooling medium diversion area, and the chamber has an outlet side wall that gradually contracts in an inverted eight-shaped shape in the cooling medium gathering area, and the cooling medium inlet is located in the middle of the inlet side wall that gradually expands in an eight-shaped shape.

[0008] Furthermore, the diversion structure includes a primary diversion boss and a secondary diversion boss, the primary diversion boss is arranged directly opposite the cooling medium inlet, and the secondary diversion boss is symmetrically arranged on both sides of the primary diversion boss. Along the direction perpendicular to the flow direction of the cooling medium in the cooling channel, the cooling medium inlet is located at the center of the multiple cooling channels.

[0009] Preferably, the first-level diverter boss and the second-level diverter boss are both cylindrical bosses, and the axes of the first-level diverter boss and the second-level diverter boss are arranged to coincide with each other along a direction perpendicular to the flow direction of the cooling medium in the cooling channel, and the diameter of the first-level diverter boss is greater than the diameter of the second-level diverter boss.

[0010] Preferably, the shell comprises a base and a cover plate that cooperate with each other, the base has a recessed chamber, and the cover plate can seal the chamber.

[0011] Specifically, the baffles include upper baffles and lower baffles, the upper baffles are connected to the cover plate, and the lower baffles are connected to each of the cooling channels on the base. After the cover plate is connected to the base, multiple upper baffles are inserted into each of the cooling channels, and along the flow direction of the cooling medium in the cooling channel, the upper baffles and the lower baffles in the same cooling channel are staggered.

[0012] Preferably, the lower deflector is abutted against two adjacent partition ribs, and after the cover plate is cooperatively connected with the base, the upper deflector is abutted against two adjacent partition ribs, a first flow channel is formed between the lower deflector and the cover plate, and a second flow channel is formed between the upper deflector and the base.

[0013] Preferably, both the upper baffle and the lower baffle are provided with flow holes.

[0014] Preferably, a plurality of the upper baffles are arranged side by side and spaced apart to form at least one row of first baffle groups, and a plurality of the lower baffles are arranged side by side in each cooling channel to form at least one row of second baffle groups.

[0015] Preferably, an arrangement direction of the plurality of upper baffles in the first baffle group and an arrangement direction of the plurality of lower baffles in the second baffle group are both perpendicular to a flow direction of the cooling medium in the cooling channel.

[0016] Preferably, along the flow direction of the cooling medium in the cooling channel, the heights of the multiple M-shaped rib segments are arranged to decrease in a step-by-step manner, the baffles are connected to the bottom wall of the shell, and the height of the baffles is smaller than the height of the partition ribs at their setting positions.

[0017] Preferably, the height of the plurality of M-shaped rib segments on the partition rib close to the first end is the same as the height of the chamber.

[0018] The characteristics and advantages of the present invention are: the data center liquid cooling plate provided by the present invention is provided with a baffle plate abutting between the partition ribs, so that the cooling medium in each cooling channel has a flow path with an S-shaped baffle along the vertical direction, and by setting the partition ribs into an M shape, the cooling medium in each cooling channel also has a flow path with an S-shaped baffle along the horizontal direction, that is, the present application enables the cooling medium to flow forward through the cooling channel while taking into account both the horizontal S-shaped baffle and the vertical S-shaped baffle. Compared with a single horizontal or vertical S-shaped baffle, it can reduce the dead zone of the cooling medium in the flow process, which helps to better distribute the cooling medium. In various parts of the liquid cooling plate, the temperature of the entire liquid cooling plate is made more uniform, ensuring the heat exchange efficiency of the liquid cooling plate; in addition, the combination of horizontal S-shaped baffles and vertical S-shaped baffles can also enhance the disturbance effect on the cooling medium, help to destroy the fluid boundary layer, and improve the heat transfer coefficient, thereby enhancing the heat exchange capacity of the liquid cooling plate in the data center; at the same time, by setting a diversion structure in the cooling medium diversion area, a better flow distribution effect is achieved, and by setting a cooling medium gathering area, the cooling medium flowing out of each cooling channel is orderly converged and flowed out, avoiding excessive accumulation of cooling medium at the cooling medium outlet, thereby affecting the cooling effect of the liquid cooling plate in the data center. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the composition of the data center liquid cooling plate provided in an embodiment of the present invention;

[0021] Figure 2 It is a schematic structural diagram of a base provided in an embodiment of the present invention when a plurality of M-shaped rib segments of a partition rib are arranged at the same height;

[0022] Figure 3 It is a structural schematic diagram of an upper baffle plate provided on a cover plate provided in an embodiment of the present invention;

[0023] Figure 4 It is a schematic structural diagram of a base provided in an embodiment of the present invention in a state where the heights of a plurality of M-shaped rib segments of the partition ribs are arranged in a stepwise decreasing manner;

[0024] Figure 5 It is a schematic structural diagram of an M-shaped rib segment provided in an embodiment of the present invention.

[0025] Description of Figure Numbers:

[0026] 1. Base; 2. Partition rib; 210. M-shaped rib segment; 211. Middle portion; 212. Edge portion; 3. Cooling channel; 4. Cooling medium diversion area; 5. Cooling medium gathering area; 6. Diversion structure; 610. Primary diversion boss; 620. Secondary diversion boss; 7. Cooling medium inlet pipe; 8. Cooling medium outlet pipe; 9. Lower baffle; 10. Cover plate; 11. Upper baffle; 12. Flow hole; 13. Threaded hole; 14. Through hole; 15. Fastening bolts. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 5As shown, the present invention provides a data center liquid cooling plate, including a shell, a chamber having a first end and a second end is formed inside the shell, a plurality of partition ribs 2 are arranged side by side in the chamber, a cooling channel 3 is formed between two adjacent partition ribs 2, a cooling medium in the cooling channel 3 flows in a direction from the first end to the second end, a cooling medium inlet and a cooling medium outlet are respectively arranged at the first end and the second end, a cooling medium diversion area 4 is formed between the cooling medium inlet and the cooling channel 3, a cooling medium gathering area 5 is formed between the cooling medium outlet and the cooling channel 3, a diversion structure 6 for distributing the cooling medium to each cooling channel 3 is arranged in the cooling medium diversion area 4; the cooling medium flows along the cooling channel 3. direction, a plurality of baffles are arranged in the cooling channel 3 at intervals, and the ends thereof abut against the partition ribs 2, and the height of the baffles is less than the height of the partition ribs 2 along the direction from the top wall to the bottom wall of the shell; the partition rib 2 comprises a plurality of M-shaped rib segments 210 connected in sequence from the first end to the second end, and each M-shaped rib segment 210 comprises a middle portion 211 and side portions 212 symmetrically connected at both ends of the middle portion 211, the side portion 212 is an arc portion with a circumferential angle of not less than 180°, and the middle portion 211 is an arc portion with a circumferential angle of not more than 180°, and the openings of the side portion 212 and the middle portion 211 are directed toward two adjacent cooling channels 3 respectively, and the radius of the side portion 212 is at least 6 times the radius of the middle portion 211. In this way, the cooling medium entering the shell from the cooling medium inlet first flows through the cooling medium diversion area 4, and is distributed relatively evenly to each cooling channel 3 by the diversion structure 6. Then the cooling medium collides back and forth between the side walls in each cooling channel 3 and flows forward, that is, the cooling medium entering each cooling channel 3 is diverted forward in the horizontal direction. After the cooling medium flows to the baffle, the cooling medium is blocked by the baffle and diverted in the height direction of the baffle to flow through the baffle and continue to flow forward in the horizontal direction. After the cooling medium reaches the next baffle, the above flow mode is repeated. Finally, the cooling medium in each cooling channel 3 flows to the cooling medium gathering area 5 to converge and flows out of the shell from the cooling medium outlet. The present application sets a deflector plate abutting between the partition ribs 2 so that the cooling medium in each cooling channel 3 has a flow path with an S-shaped deflection in the vertical direction, and sets the partition rib 2 to be M-shaped, so that the cooling medium in each cooling channel 3 also has a flow path with an S-shaped deflection in the horizontal direction. That is, the present application allows the cooling medium to flow forward through the cooling channel 3 while taking into account both the horizontal S-shaped deflection and the vertical S-shaped deflection. Compared with a single horizontal or vertical S-shaped deflection, the dead zone of the cooling medium in the flow process can be reduced, which helps to better distribute the cooling medium in various parts of the liquid cooling plate, making the temperature of the entire liquid cooling plate more uniform, thereby ensuring the heat exchange efficiency of the liquid cooling plate; in addition, the combination of the horizontal S-shaped deflection and the vertical S-shaped deflection can also enhance the disturbance effect on the cooling medium, help to destroy the fluid boundary layer, and improve the heat transfer coefficient, thereby enhancing the heat exchange capacity of the liquid cooling plate of the data center.

[0029] Specifically, Figure 1 Figure 2 ,and Figure 4 As shown, a chamber is formed inside the shell, and the chamber has a first end and a second end opposite to each other. A cooling medium inlet is provided on the first end, to which a cooling medium input pipe 7 is connected; a cooling medium outlet is provided on the second end, to which a cooling medium output pipe 8 is connected; a plurality of partition ribs 2 extending longitudinally between the first end and the second end are arranged side by side at equal intervals in the chamber, and the height of the partition ribs 2 is the same as the height of the chamber. A cooling channel 3 connecting the cooling medium inlet and the cooling medium outlet is formed between two adjacent partition ribs 2, and a cooling channel 3 connecting the cooling medium inlet and the cooling medium outlet is also formed between the partition ribs 2 close to the inner wall of the chamber and the inner wall of the chamber. Among them, a diversion structure 6 for distributing the flow of the cooling medium is provided in the cooling medium diversion area 4 formed between the cooling medium inlet and the inlet of each cooling channel 3, so as to distribute the cooling medium entering the shell more evenly to each cooling channel 3, thereby achieving uniform distribution of the temperature of the liquid cooling plate in the data center. Among them, the cooling medium is preferably liquid water. As Figure 5 As shown, in order to enhance the heat transfer effect and ensure the deflection effect of the cooling medium in the cooling channel 3 along the horizontal direction, each M-shaped rib segment 210 has a middle portion 211 and side portions 212 symmetrically connected to both ends of the middle portion 211, wherein the side portions 212 and the middle portion 211 are both arc portions with a circumferential angle equal to 180°, and the openings of the side portions 212 and the middle portion 211 are respectively directed to two adjacent cooling channels 3, and the radius of the side portion 212 is 6 times the radius of the middle portion 211. In this embodiment, in order to take into account both good deflection effect and small flow resistance, the height of the partition rib 2 is 5mm, the height of the deflector is 3mm, and the inner diameters of the cooling medium input pipe 7 and the cooling medium output pipe 8 are both 4mm.

[0030] It should be noted that the number of baffles in each cooling channel 3 can be the same or different; the baffles can be arranged side by side at the same position of each cooling channel 3 from the cooling medium inlet, or can be staggered at different positions of each cooling channel 3 from the cooling medium inlet; similarly, along the flow direction of the cooling medium in the cooling channel 3, the first baffle in each cooling channel 3 can be connected to the top wall of the shell, or it can be connected to the bottom wall of the shell, that is, the S-shaped baffle flow path in each cooling channel 3 can be parallel or symmetrical, and the present application does not impose any restrictions on this.

[0031] According to one embodiment of the present invention, Figure 1 and Figure 3As shown, the housing includes a base 1 and a cover plate 10 that are matingly connected. The base 1 has a recessed chamber, and the cover plate 10 can seal the chamber to prevent the cooling medium entering the chamber from leaking out. A threaded hole 13 is provided on the base 1 outside the chamber, and a through hole 14 that matches the threaded hole 13 is provided on the cover plate 10. The cover plate 10 is connected to the base 1 by fastening bolts 15 that penetrate through the through hole 14 and the threaded hole 13. In this embodiment, as a preference, the base 1 and the cover plate 10 are both made of metal copper.

[0032] According to a preferred embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, along the flow direction of the cooling medium in the cooling channel 3, the chamber has an inlet side wall that gradually expands in an eight-shaped shape in the cooling medium diversion area 4, and the chamber has an outlet side wall that gradually shrinks in an inverted eight-shaped shape in the cooling medium gathering area 5, and the cooling medium inlet is located in the middle of the inlet side wall that gradually expands in an eight-shaped shape. By setting a dispersed flow channel that gradually expands to both sides between the cooling medium inlet and the cooling channel 3, in conjunction with the diversion structure 6, a better flow distribution effect is achieved, and by setting a converging flow channel that gradually shrinks to the middle on the outlet side of the cooling channel 3, the cooling medium flowing out of each cooling channel 3 is orderly converged and flows out of the chamber, avoiding excessive accumulation of the cooling medium at the cooling medium outlet, thereby affecting the cooling effect of the data center liquid cooling plate.

[0033] According to a preferred embodiment of the present invention, Figure 2 and Figure 4 As shown, the flow diversion structure 6 includes a primary flow diversion boss 610 and a secondary flow diversion boss 620. The primary flow diversion boss 610 is arranged directly opposite to the cooling medium inlet, and the secondary flow diversion boss 620 is symmetrically arranged on both sides of the primary flow diversion boss 610. The cooling medium inlet is located at the center of the plurality of cooling channels 3 along a direction perpendicular to the flow direction of the cooling medium in the cooling channel 3. In this way, the cooling medium is further evenly distributed by multi-stage turbulence of the cooling medium entering. Specifically, as Figure 2 and Figure 4As shown, the cooling medium inlet is located at the center of the arrangement direction of the multiple cooling channels 3, and the first-level diverter boss 610 is arranged opposite to the cooling medium inlet, that is, when the number of cooling channels 3 is an odd number, the first-level diverter boss 610 is located on the channel center line of the middle cooling channel 3; when the number of cooling channels 3 is an even number, the first-level diverter boss 610 is located on the extension line of the partition rib 2 shared by the two middle cooling channels 3. In this way, the cooling medium entering from the cooling medium inlet first contacts the primary diverter boss 610, and is diverted and flows out from both sides of the primary diverter boss 610. After diversion, part of the cooling medium flows forward into each cooling channel 3 in front of the primary diverter boss 610, and part of the cooling medium flows sideways and forwards to contact the secondary diverter boss 620, and is diverted and flows out again from both sides of the secondary diverter boss 620. After diversion again, part of the cooling medium flows forward into each cooling channel 3 in front of the secondary diverter boss 620, and part of the cooling medium flows sideways and forwards to each cooling channel 3 near the inner wall of the chamber. Among them, the number of bosses included in the diverter structure 6 can be adaptively set to multiple levels according to the size of the cooling medium diverter area 4 in the actual chamber. Similarly, the number of bosses included in each boss level, the shape of the bosses, etc. can also be adaptively set according to the need for the turbulence effect, and this application does not impose any restrictions on this. Preferably, along the flow direction of the cooling medium in the cooling channel 3, the flow diversion bosses of each stage are arranged at intervals, and the number of bosses of each stage of the flow diversion bosses increases step by step.

[0034] According to one embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, the primary flow-dividing boss 610 and the secondary flow-dividing boss 620 are both cylindrical bosses, and the axes of the primary flow-dividing boss 610 and the secondary flow-dividing boss 620 are arranged to coincide with each other along the direction perpendicular to the flow direction of the cooling medium in the cooling channel 3, and the diameter of the primary flow-dividing boss 610 is larger than the diameter of the secondary flow-dividing boss 620. In this way, the cooling medium is diverted step by step, thereby obtaining a better diversion effect.

[0035] According to a preferred embodiment of the present invention, Figures 2 to 3 As shown, to facilitate the processing and manufacturing of the liquid cooling plate in the data center, the baffle includes an upper baffle 11 and a lower baffle 9. The upper baffle 11 is connected to the cover plate 10, and the lower baffle 9 is connected to each cooling channel 3 on the base 1. After the cover plate 10 is connected to the base 1, multiple upper baffles 11 are inserted into each cooling channel 3. Along the flow direction of the cooling medium in the cooling channel 3, the upper baffles 11 and the lower baffles 9 in the same cooling channel 3 are staggered.

[0036] According to a preferred embodiment of the present invention, Figure 2As shown, the lower baffle 9 abuts against two adjacent partition ribs 2, and after the cover plate 10 is connected with the base 1, the upper baffle 11 abuts against the two adjacent partition ribs 2, and a first flow passage is formed between the lower baffle 9 and the cover plate 10, and a second flow passage is formed between the upper baffle 11 and the base 1. In this way, the cooling medium entering each cooling channel 3 can only flow forward from the second flow passage after reaching the upper baffle 11, and can only flow forward from the first flow passage after reaching the lower baffle 9, that is, the cooling medium entering the cooling channel 3 can only flow forward along a wavy path, thereby obtaining a better turbulence effect and further enhancing the heat exchange capacity of the liquid cooling plate of the data center.

[0037] According to a preferred embodiment of the present invention, Figure 3 As shown, both the upper baffle 11 and the lower baffle 9 are provided with flow holes 12. Specifically, as Figure 3 As shown, the upper baffle 11 and the lower baffle 9 are both provided with flow holes 12 at their center positions, so that part of the cooling medium reaching the baffle can flow forward directly from the flow holes 12, thereby ensuring the baffle effect while reducing the flow resistance of the cooling medium. In this embodiment, the diameter of the flow hole 12 is 2.5 mm.

[0038] According to a preferred embodiment of the present invention, Figures 2 to 3 As shown, a plurality of upper baffles 11 are arranged side by side and spaced apart to form at least one row of first baffle groups, and a plurality of lower baffles 9 are arranged side by side in each cooling channel 3 to form at least one row of second baffle groups.

[0039] According to a preferred embodiment of the present invention, Figures 2 to 3 As shown, the arrangement direction of the multiple upper baffles 11 in the first baffle group and the arrangement direction of the multiple lower baffles 9 in the second baffle group are both perpendicular to the flow direction of the cooling medium in the cooling channel 3, that is, the lower baffle 9 is vertically abutted between two adjacent partition ribs 2, and after the cover plate 10 is connected to the base 1, the upper baffle 11 is vertically abutted between two adjacent partition ribs 2.

[0040] According to a preferred embodiment of the present invention, Figure 1 and Figure 4 As shown, along the flow direction of the cooling medium in the cooling channel 3, the heights of the multiple M-shaped rib segments 210 are arranged in a step-by-step decreasing manner, the baffles are connected to the bottom wall of the shell, and the height of the baffles is less than the height of the partition ribs 2 at the location where they are set. In this way, the flow range of the cooling medium in the rear section of the cooling channel 3 is increased, the flow resistance is reduced, and the speed loss of the cooling medium after multiple deflections in the front section of the cooling channel 3 is compensated to a certain extent, ensuring the overall temperature uniformity of the liquid cooling plate in the data center. It should be noted that the cover plate 10 in this embodiment is a smooth cover plate.

[0041] According to a preferred embodiment of the present invention, the height of the plurality of M-shaped rib segments 210 on the partition rib 2 near the first end is the same as the height of the chamber. Figure 1 and Figure 4 As shown, along the flow direction of the cooling medium in the cooling channel 3, the heights of the multiple M-shaped rib segments 210 are arranged in three steps, the multiple M-shaped rib segments 210 near the first end have a first step height that is the same as the height of the chamber, the multiple M-shaped rib segments 210 located in the middle of the cooling channel 3 have a second step height, and the multiple M-shaped rib segments 210 near the second end have a third step height. By setting the height of the multiple M-shaped rib segments 210 near the first end of the partition rib 2 to be the same as the height of the chamber, the cooling medium is prevented from flowing in the front section of the cooling channel 3, thereby affecting the temperature uniformity of the entire liquid cooling plate. In this embodiment, the first step height is 5mm, the second step height is 3.5mm, and the third step height is 2mm. During specific use, the data center liquid cooling plate provided in the embodiment of the present invention is placed above the heat-generating electronic component, and the cooling medium is introduced into the chamber from the cooling medium inlet. The cooling medium flows from the cooling medium diversion area 4 to the cooling medium gathering area 5, carrying away the heat transferred from the heat-generating electronic component to the base 1, and transferring its own cold energy to the heat-generating electronic component through the base 1, thereby completing the heat exchange between the cooling medium and the heat-generating electronic component and realizing the cooling of the heat-generating electronic component.

[0042] Based on the above description, the data center liquid cooling plate provided in the embodiment of the present invention is provided with a deflection plate abutting between the partition ribs 2, so that the cooling medium in each cooling channel 3 has a flow path with an S-shaped deflection along the vertical direction, and by setting the partition ribs 2 to be M-shaped, the cooling medium in each cooling channel 3 also has a flow path with an S-shaped deflection along the horizontal direction. That is, the present application allows the cooling medium to take into account both the horizontal S-shaped deflection and the vertical S-shaped deflection and flow forward through the cooling channel 3. Compared with a single horizontal or vertical S-shaped deflection, the dead zone of the cooling medium in the flow process can be reduced, which helps to better distribute the cooling medium. In various parts of the liquid cooling plate, the temperature of the entire liquid cooling plate is made more uniform, ensuring the heat exchange efficiency of the liquid cooling plate; in addition, the combination of the horizontal S-shaped baffle and the vertical S-shaped baffle can also enhance the disturbance effect on the cooling medium, help to destroy the fluid boundary layer, and improve the heat transfer coefficient, thereby enhancing the heat exchange capacity of the liquid cooling plate in the data center; at the same time, by setting a diversion structure 6 in the cooling medium diversion area 4, a better flow distribution effect is achieved, and by setting a cooling medium gathering area 5, the cooling medium flowing out of each cooling channel 3 is orderly converged and flowed out, avoiding excessive accumulation of cooling medium at the cooling medium outlet, thereby affecting the cooling effect of the liquid cooling plate in the data center.

[0043] The above are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A data center liquid cooling plate, characterized in that: A housing is provided inside the housing, wherein a chamber having a first end and a second end is formed, wherein a plurality of partition ribs are arranged side by side in the chamber, wherein a cooling channel is formed between two adjacent partition ribs, wherein a cooling medium in the cooling channel flows in a direction from the first end to the second end, wherein a cooling medium inlet and a cooling medium outlet are respectively arranged at the first end and the second end, wherein a cooling medium flow distribution area is formed between the cooling medium inlet and the cooling channel, wherein a cooling medium flow concentration area is formed between the cooling medium outlet and the cooling channel, wherein a flow distribution structure for distributing the cooling medium to each of the cooling channels is arranged in the cooling medium flow distribution area; Along the flow direction of the cooling medium in the cooling channel, a plurality of baffles are arranged in the cooling channel at intervals, and the ends thereof abut against the partition ribs. Along the direction from the top wall to the bottom wall of the shell, the height of the baffles is less than the height of the partition ribs. The partition rib includes a plurality of M-shaped rib segments connected in sequence from the first end to the second end, each of the M-shaped rib segments having a middle portion and side portions symmetrically connected to both ends of the middle portion, the side portions being an arc portion with a circumferential angle of not less than 180°, the middle portion being an arc portion with a circumferential angle of not more than 180°, the openings of the side portions and the middle portion respectively pointing to two adjacent cooling channels, and the radius of the side portions being at least 6 times the radius of the middle portion.

2. The data center liquid cooling plate according to claim 1, characterized in that: Along the flow direction of the cooling medium in the cooling channel, the chamber has an inlet side wall that gradually expands in an eight-shaped shape in the cooling medium diversion area, and the chamber has an outlet side wall that gradually contracts in an inverted eight-shaped shape in the cooling medium gathering area. The cooling medium inlet is located in the middle of the inlet side wall that gradually expands in an eight-shaped shape.

3. The data center liquid cooling panel according to claim 1, characterized in that: The diversion structure includes a primary diversion boss and a secondary diversion boss. The primary diversion boss is arranged opposite to the cooling medium inlet, and the secondary diversion boss is symmetrically arranged on both sides of the primary diversion boss. Along the direction perpendicular to the flow direction of the cooling medium in the cooling channel, the cooling medium inlet is located at the center of multiple cooling channels.

4. The data center liquid cooling panel according to claim 3, characterized in that: The first-level diverter boss and the second-level diverter boss are both cylindrical bosses. Along a direction perpendicular to the flow direction of the cooling medium in the cooling channel, the axes of the first-level diverter boss and the second-level diverter boss are arranged to coincide with each other, and the diameter of the first-level diverter boss is greater than the diameter of the second-level diverter boss.

5. The data center liquid cooling panel according to claim 1, characterized in that: The shell comprises a base and a cover plate which are matched and docked with each other, the base has a recessed chamber, and the cover plate can seal the chamber.

6. The data center liquid cooling panel according to claim 5, characterized in that: The baffles include upper baffles and lower baffles, the upper baffles are connected to the cover plate, and the lower baffles are connected to each of the cooling channels on the base. After the cover plate is connected with the base, multiple upper baffles are inserted into each of the cooling channels, and along the flow direction of the cooling medium in the cooling channel, the upper baffles and the lower baffles in the same cooling channel are staggered.

7. The data center liquid cooling panel according to claim 6, characterized in that: The lower baffle plate abuts against two adjacent partition ribs. After the cover plate is connected to the base, the upper baffle plate abuts against two adjacent partition ribs. A first flow channel is formed between the lower baffle plate and the cover plate, and a second flow channel is formed between the upper baffle plate and the base.

8. The data center liquid cooling panel according to claim 7, characterized in that: The upper baffle plate and the lower baffle plate are both provided with flow holes.

9. The data center liquid cooling panel according to claim 8, characterized in that: The plurality of upper baffles are arranged side by side and spaced apart to form at least one row of first baffle groups, and the plurality of lower baffles are arranged side by side in each cooling channel to form at least one row of second baffle groups.

10. The data center liquid cooling panel according to claim 9, characterized in that: An arrangement direction of the plurality of upper baffles in the first baffle group and an arrangement direction of the plurality of lower baffles in the second baffle group are both perpendicular to a flow direction of the cooling medium in the cooling channel.

11. The data center liquid cooling panel according to claim 1, characterized in that: Along the flow direction of the cooling medium in the cooling channel, the heights of the multiple M-shaped rib segments are arranged in a step-by-step decreasing manner, the baffle is connected to the bottom wall of the shell, and the height of the baffle is smaller than the height of the partition rib at its setting position.

12. The data center liquid cooling panel according to claim 11, characterized in that: The height of the plurality of M-shaped rib segments on the partition rib close to the first end is the same as the height of the chamber.

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