Liquid cooling heat dissipation assembly and server

Abstract

The utility model discloses a liquid cooling heat dissipation assembly and a server. The liquid cooling heat dissipation assembly comprises a shunting device, a liquid cooling device and a soaking device which are arranged in sequence, the liquid cooling device and the soaking device are overlapped and are in heat transfer fit, and the liquid cooling device is provided with a cooling liquid flow channel; the flow dividing device and the liquid cooling device are overlapped, the flow dividing device comprises a first sub-runner and a second sub-runner which are arranged at an interval, the first sub-runner is connected with the liquid inlet, the second sub-runner is connected with the liquid outlet, and openings are formed in the positions, at least corresponding to the first sub-runner and the second sub-runner, of the cooling liquid runner; cooling liquid in the first sub-runner enters the cooling liquid runner in the direction not parallel to the cooling liquid runner, cooling liquid in the cooling liquid runner enters the second sub-runner in the direction not parallel to the cooling liquid runner, and the first sub-runner communicates with the second sub-runner through the cooling liquid runner. According to the liquid cooling heat dissipation assembly of the utility model, the heat dissipation capability of the liquid cooling heat dissipation assembly can be improved, and the heat dissipation requirement of a high-power chip can be better satisfied.

Description

Technical Field

[0001] The utility model relates to the technical field of server heat dissipation, and more specifically to a liquid cooling heat dissipation component and a server. Background Art

[0002] With the continuous development of chip technology, the overall power consumption and heat flux density of chips are increasing. At high temperatures, the thermal failure rate of chips will increase greatly, the device nodes and circuit topology connections inside the chip will be damaged by thermal stress, and the reliability and service life of the chip will be significantly reduced.

[0003] In order to maintain the normal operation of high-performance AI (Artificial Intelligence) servers, most AI servers currently use liquid cooling plates to dissipate heat from internal CPU (Central Processing Unit) and GPU (Graphics Processing Unit) chips.

[0004] However, most of the current liquid cooling plates only use a shovel-tooth structure, which has problems such as high pressure drop, poor temperature uniformity, and poor ability to disturb the fluid. As a result, their heat dissipation ability for high heat flux density chips is weak, which causes the chip temperature to be higher. When the chip works in a high temperature environment, the thermal failure rate will increase.

[0005] Therefore, the heat dissipation capacity of the liquid cooling components in the related art is limited, and it is increasingly difficult to meet the heat dissipation requirements of higher power chips. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a liquid cooling heat dissipation component and a server, which can improve the heat dissipation capacity of the liquid cooling heat dissipation component and better meet the heat dissipation requirements of high-power chips.

[0007] In order to achieve the above-mentioned purpose, according to an embodiment of the utility model, a liquid cooling heat dissipation assembly is provided, comprising a flow distribution device, a liquid cooling device and a heat equalization device which are arranged in sequence;

[0008] The heat equalizing device is configured to cooperate with the heat-generating element in heat transfer;

[0009] The liquid cooling device and the heat equalizing device are stacked and heat-transfer-coordinated, and the liquid cooling device is provided with a cooling liquid flow channel;

[0010] The flow dividing device is stacked with the liquid cooling device, and the flow dividing device includes a first flow dividing channel and a second flow dividing channel arranged at intervals, the first flow dividing channel is configured to be connected to a liquid inlet, and the second flow dividing channel is configured to be connected to a liquid outlet, and the cooling liquid flow channel is provided with openings at least corresponding to positions of the first flow dividing channel and the second flow dividing channel, so that the cooling liquid in the first flow dividing channel enters the cooling liquid flow channel in a direction not parallel to the cooling liquid flow channel, and the cooling liquid in the cooling liquid flow channel enters the second flow dividing channel in a direction not parallel to the cooling liquid flow channel, and the first flow dividing channel and the second flow dividing channel are connected through the cooling liquid flow channel.

[0011] In an exemplary embodiment, in the first branch flow channel, along the flow direction of the coolant, the cross-sectional area of ​​the first branch flow channel gradually increases;

[0012] In the second branch flow channel, along the flow direction of the coolant, the cross-sectional area of ​​the second branch flow channel gradually decreases.

[0013] In an exemplary embodiment, the flow dividing device further includes a liquid inlet channel and a liquid outlet channel, the first flow dividing channel is connected to the liquid inlet through the liquid inlet channel, and the second flow dividing channel is connected to the liquid outlet through the liquid outlet channel.

[0014] In an exemplary embodiment, the number of the first branch channels and the second branch channels are at least two respectively. Along the extension direction of the coolant flow channel, the first branch channels and the second branch channels are arranged alternately, at least two first branch channels are connected to the same liquid inlet channel; at least two second branch channels are connected to the same liquid outlet channel.

[0015] In an exemplary embodiment, the diverter device also includes a diverter frame and a diverter plate arranged in the diverter frame, the first diverter channel and the second diverter channel are respectively opened on the diverter plate, on the side of the first diverter channel close to the liquid inlet, a liquid inlet channel is formed between the diverter plate and the diverter frame, and on the side of the second diverter channel close to the liquid outlet, a liquid outlet channel is formed between the diverter plate and the diverter frame.

[0016] In an exemplary embodiment, the cross-sections of the first branch channel and the second branch channel are trapezoidal, the small head end of the first branch channel faces the liquid inlet channel and is connected to the liquid inlet channel, the large head end of the first branch channel faces the liquid outlet channel and is separated from the liquid outlet channel by the plate body of the branch plate, the large head end of the second branch channel faces the liquid outlet channel and is connected to the liquid outlet channel, and the small head end of the second branch channel faces the liquid inlet channel and is separated from the liquid inlet channel through the plate body of the branch plate.

[0017] In an exemplary embodiment, two support plates are provided on one side of the diverter frame close to the liquid cooling device in the thickness direction. The two support plates are relatively arranged at the two ends of the first diverter channel and the second diverter channel. The two ends of the diverter plate are respectively arranged on the support plates and are spaced apart from the diverter frame. A liquid inlet channel is formed between the diverter plate, the support plate and the diverter frame on the first side of the diverter frame, and a liquid outlet channel is formed between the diverter plate, the support plate and the diverter frame on the second side of the diverter frame.

[0018] In an exemplary embodiment, a first groove is formed between the two supporting plates, the coolant flow channel is located in the first groove, and the top of the coolant flow channel is connected to the first branch flow channel and the second branch flow channel.

[0019] In an exemplary embodiment, the diverter frame, the supporting plate and the diverter plate are integrally formed.

[0020] In an exemplary embodiment, the first branch channel, the second branch channel, the liquid inlet channel and the liquid outlet channel are arranged in the same plane on a side close to the liquid cooling device.

[0021] In an exemplary embodiment, arc chamfers are provided at the inner wall corners of the first branch channel, the inner wall corners of the second branch channel, the connection between the first branch channel and the liquid inlet channel, and the connection between the second branch channel and the liquid outlet channel.

[0022] In an exemplary embodiment, a cover plate is connected to a side of the flow dividing device away from the liquid cooling device, and the liquid inlet and the liquid outlet are both arranged on the cover plate.

[0023] In an exemplary embodiment, the liquid inlet and the liquid outlet are respectively located on both sides of the cover plate along a direction perpendicular to the extension direction of the coolant flow channel, and along the extension direction of the coolant flow channel, the liquid inlet and the liquid outlet are respectively located in the middle position of the cover plate.

[0024] In one exemplary embodiment, the liquid cooling device comprises:

[0025] substrate;

[0026] The liquid cooling plate is arranged on the base plate. At least one cooling liquid flow channel is provided on the liquid cooling plate. The extension direction of the cooling liquid flow channel is the same as the arrangement direction of the first branch flow channel and the second branch flow channel.

[0027] In an exemplary embodiment, the liquid cooling plate includes at least two channel plates arranged in parallel and spaced apart from each other, and a cooling liquid flow channel is formed between any two adjacent channel plates.

[0028] In an exemplary embodiment, the coolant flow channel has a wave shape, a sawtooth shape, a square wave shape, or a trapezoidal wave shape.

[0029] According to another aspect of the present invention, a server is provided, comprising the above-mentioned liquid cooling and heat dissipation component.

[0030] The liquid cooling heat dissipation component provided by the utility model has the following beneficial effects:

[0031] During operation, since the first branch channel and the second branch channel are arranged at intervals and the two are connected through the coolant flow channel, the coolant enters the first branch channel of the branch device from the liquid inlet, and then enters the coolant flow channel of the liquid cooling device from the first branch channel, flows along the coolant flow channel, and then enters the second branch channel from the coolant flow channel under the action of the liquid pressure difference, and finally flows out from the second branch channel from the liquid outlet; in this process, since the heat equalizing device is connected to the heating element, the heat equalizing device can quickly and efficiently transfer heat to the liquid cooling device, so that the coolant in the liquid cooling device takes away the heat during the flow.

[0032] Since the coolant in the first branch channel enters the coolant channel in a direction not parallel to the coolant channel, it has an impact jet effect on the coolant channel and can generate turbulence; similarly, the coolant in the coolant channel enters the second branch channel in a direction not parallel to the coolant channel, which has an impact jet effect and generates turbulence, which is beneficial to improving the convective heat exchange effect. During the entire flow process of the coolant, since the diversion device and the liquid cooling device are superimposed, the first branch channel and the second branch channel are both superimposed with the coolant channel. Therefore, when the coolant enters the coolant channel through the first branch channel, it will undergo a flow reversal and then flow along the coolant channel. When the coolant flowing in the coolant channel reaches the second branch channel, it will flow from the coolant channel to the second branch channel, which is equivalent to reversing the coolant flow again, so that the coolant undergoes multiple flow reversals in the process of flowing from the liquid inlet to the liquid outlet, thereby further enhancing the degree of turbulence and improving the convective heat exchange capacity.

[0033] It can be seen that the present application utilizes the impact jet effect and flow reversing effect of the diverter device to improve the heat exchange capacity of the liquid cooling device, so that the coolant in the liquid cooling device can dissipate the heat; in addition, the liquid cooling device is combined with the heat equalizing device, and the heat of the heating element is quickly transferred to the liquid cooling device by utilizing the fast and efficient conduction effect of the heat equalizing device, and then the heat is quickly transferred out in conjunction with the diverter device, thereby improving the heat dissipation effect of the liquid cooling heat dissipation component and solving the heat dissipation problem of high heat density chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0035] Figure 1 An exploded view of a liquid cooling and heat dissipation assembly provided in an embodiment of the utility model;

[0036] Figure 2 for Figure 1 Schematic diagram of the assembled structure;

[0037] Figure 3 for Figure 2 A structural diagram from another perspective;

[0038] Figure 4 It is a structural schematic diagram of the flow diversion device of an embodiment of the utility model;

[0039] Figure 5 A schematic structural diagram of the flow diversion device of an embodiment of the utility model from another perspective;

[0040] Figure 6 This is a schematic diagram of the structure of the liquid cooling device of an embodiment of the utility model;

[0041] Figure 7 A top view of a liquid cooling device according to an embodiment of the utility model;

[0042] Figure 8 It is a schematic diagram of the structure of the heat equalizing device and the liquid cooling device before being assembled according to an embodiment of the utility model.

[0043] Reference numerals:

[0044] 1. Diverter device; 11. First diverter channel; 12. Second diverter channel; 13. Liquid inlet channel; 14. Liquid outlet channel; 15. Arc chamfer; 16. First groove; 17. Diverter frame; 18. Diverter plate; 19. Support plate; 2. Liquid cooling device; 21. Cooling liquid channel; 22. Base plate; 23. Channel plate; 24. Second groove; 3. Heat equalization device; 4. Cover plate; 41. Liquid inlet; 42. Liquid outlet; 51. Liquid inlet nozzle; 52. Liquid outlet nozzle. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. The terms "parallel", "perpendicular" and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, where the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement being discussed and the errors associated with the measurement of a specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, that the difference between the two equalities is less than or equal to 5% of either one. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0048] The core of the utility model is to provide a liquid cooling and heat dissipation component. Another core of the utility model is to provide a server including the liquid cooling and heat dissipation component.

[0049] Please refer to Figures 1 to 8As shown, according to an embodiment of the utility model, a liquid-cooled heat dissipation component includes a flow divider 1, a liquid cooling device 2 and a heat equalizer 3 which are arranged in sequence; the heat equalizer 3 is configured to cooperate with the heat transfer of the heating element; the liquid cooling device 2 is overlapped with the heat equalizer 3 and cooperates with the heat transfer, and the liquid cooling device 2 is provided with a coolant flow channel 21; the flow divider 1 is overlapped with the liquid cooling device 2, and the flow divider 1 includes a first flow divider 11 and a second flow divider 12 which are arranged at intervals, the first flow divider 11 is configured to connect to the liquid inlet 41, and the second flow divider 12 is configured to connect to the liquid outlet 42, and the coolant flow channel 21 is provided with an opening at least corresponding to the position of the first flow divider 11 and the second flow divider 12, so that the coolant in the first flow divider 11 enters the coolant flow channel 21 in a direction not parallel to the coolant flow channel 21, and the coolant in the coolant flow channel 21 enters the second flow divider 12 in a direction not parallel to the coolant flow channel 21, and the first flow divider 11 and the second flow divider 12 are connected through the coolant flow channel 21.

[0050] Since the first branch channel 11 and the second branch channel 12 of the liquid-cooled heat dissipation component are arranged at intervals and the two are connected through the coolant channel 21, the coolant enters the first branch channel 11 of the branch device 1 from the liquid inlet 41, and then enters the coolant channel 21 of the liquid cooling device 2 from the first branch channel 11, flows along the coolant channel 21, and then enters the second branch channel 12 from the coolant channel 21 under the action of the liquid pressure difference, and finally flows out from the second branch channel 12 from the liquid outlet 42; in this process, since the heat equalizing device 3 is connected to the heating element, the heat equalizing device 3 can quickly and efficiently transfer heat to the liquid cooling device 2, so that the coolant in the liquid cooling device 2 takes away the heat during the flow.

[0051] Since the coolant in the first branch channel 11 enters the coolant flow channel 21 along a direction that is not parallel to the coolant flow channel 21, it has an impact jet effect on the coolant flow channel 21 and can generate turbulence; similarly, the coolant in the coolant flow channel 21 enters the second branch channel 12 along a direction that is not parallel to the coolant flow channel 21, has an impact jet effect, generates a turbulent effect, and is beneficial to improving the convective heat exchange effect. During the entire flow process of the coolant, since the diverter device 1 and the liquid cooling device 2 are overlapped, the first diverter channel 11 and the second diverter channel 12 are both overlapped with the coolant channel 21. Therefore, when the coolant enters the coolant channel 21 through the first diverter channel 11, it will undergo a flow reversal and then flow along the coolant channel 21. When the coolant flowing in the coolant channel 21 reaches the second diverter channel 12, it will flow from the coolant channel 21 to the second diverter channel 12, which is equivalent to reversing the coolant flow again, so that the coolant undergoes multiple flow reversals in the process of flowing from the liquid inlet 41 to the liquid outlet 42, thereby further enhancing the degree of turbulence and improving the convective heat transfer capacity.

[0052] It can be seen that the present application utilizes the impact jet effect and flow reversing effect of the diverter device 1, which is beneficial to improving the heat exchange capacity of the liquid cooling device 2, so that the coolant in the liquid cooling device 2 can dissipate the heat; in addition, the liquid cooling device 2 is combined with the heat equalizing device 3, and the heat of the heating element is quickly conducted to the liquid cooling device 2 by utilizing the fast and efficient conduction effect of the heat equalizing device 3, and then the heat is quickly transferred out in conjunction with the diverter device 1, thereby improving the heat dissipation effect of the liquid cooling heat dissipation component and solving the heat dissipation problem of high heat density chips.

[0053] In this embodiment, the flow diverter 1 can form a manifold diverter layer, the liquid cooling device 2 can form a liquid cooling layer, and the heat equalizing device 3 can form a heat equalizing layer. The manifold diverter layer, the liquid cooling layer, and the heat equalizing layer are stacked in sequence along the direction close to the heating element, wherein the manifold diverter layer is used to divert the coolant, and the coolant is divided into a liquid inlet part and a liquid outlet part in this layer, and the liquid inlet part and the liquid outlet part are separated. After the coolant enters the liquid inlet part, it cannot directly reach the liquid outlet part, and will first enter the liquid cooling layer from the liquid inlet part, flow along the coolant flow channel 21 in the liquid cooling layer, and after reaching the liquid outlet part, it will flow from the coolant flow channel 21 to the liquid outlet part, and then flow out from the liquid outlet part. A heat conductive match is formed between the heat equalizing layer and the liquid cooling layer. When the coolant flows through the liquid cooling layer, it will take away the heat absorbed by the heat equalizing layer from the heating element, thereby realizing rapid cooling of the heating element.

[0054] The coolant channel 21 is provided with an opening at least at a position corresponding to the first branch channel 11 and the second branch channel 12, which may include at least the following two situations, one of which is that the coolant channel 21 is completely open near the top of the first branch channel 11 and the second branch channel 12, so that the first branch channel 11 and the second branch channel 12 are connected to the same opening of at least one coolant channel 21; the other situation is that the coolant channel 21 is provided with an opening only at a position corresponding to the first branch channel 11 and the second branch channel 12 near the top of the first branch channel 11 and the second branch channel 12, and the other positions are closed structures, and the openings of the same coolant channel are all connected through the side of the coolant channel 21 away from the first branch channel 11 and the second branch channel 12.

[0055] The above-mentioned heat transfer cooperation means that the two components forming the heat transfer cooperation can transfer heat through a contact relationship rather than a fixed connection relationship, or can transfer heat through a fixed connection relationship, as long as the heat between the two can be well transferred.

[0056] In one embodiment, in the first branch channel 11, along the flow direction of the coolant, the cross-sectional area of ​​the first branch channel 11 gradually increases; in the second branch channel 12, along the flow direction of the coolant, the cross-sectional area of ​​the second branch channel 12 gradually decreases.

[0057] When the coolant enters from the liquid inlet 41, it first reaches the first branch channel 11. As the cross-sectional area of ​​the first branch channel 11 gradually increases, the flow rate of the coolant decreases accordingly, and the pressure loss is reduced, so that the coolant can be more evenly distributed in the coolant channel 21 of the entire liquid cooling device 2, which helps to avoid the problem of coolant accumulation in the front part of the first branch channel 11, causing uneven heat distribution, and ensures sufficient cooling of heat-generating components such as chips in the heat source area.

[0058] Subsequently, after the coolant passes through the convection heat exchange in the coolant flow channel 21 of the liquid cooling device 2, the temperature rises and it carries the heat to the second branch flow channel 12. As the cross-sectional area of ​​the second branch flow channel gradually decreases, the flow rate of the coolant increases and the pressure loss increases, which enables the coolant to be discharged from the coolant flow channel 21 of the liquid cooling device 2 faster, avoiding the retention inside the liquid cooling device 2 and ensuring the circulation efficiency of the coolant. At the same time, this tapered design also helps to enhance the turbulence of the coolant near the water outlet, further improving the heat exchange effect and ensuring that the coolant can carry as much heat as possible away from the cold plate and be effectively cooled by the CDU (Coolant Distribution Unit).

[0059] In one embodiment, in the cross-section of the diverter device 1, the distance between the two opposite side walls of the first diverter channel 11 gradually increases in the direction away from the liquid inlet 41, and the distance between the two opposite side walls of the second diverter channel 12 gradually decreases in the direction away from the liquid outlet 42. The two opposite side walls of the first diverter channel 11 are straight segments or curved segments, and the two opposite side walls of the second diverter channel 12 are straight segments or curved segments.

[0060] In one embodiment, the flow dividing device 1 further includes a liquid inlet channel 13 and a liquid outlet channel 14 . The first flow dividing channel 11 is connected to the liquid inlet 41 via the liquid inlet channel 13 , and the second flow dividing channel 12 is connected to the liquid outlet 42 via the liquid outlet channel 14 .

[0061] After the coolant enters the liquid-cooled heat dissipation component from the liquid inlet 41, it diffuses through the liquid inlet channel 13 connected to the liquid inlet 41. Since the liquid inlet channel 13 is connected to each first branch channel 11, the coolant can be distributed to each first branch channel 11 at the same time in the liquid inlet channel 13, so that the coolant can be distributed to each first branch channel 11 more evenly.

[0062] Subsequently, the coolant undergoes heat exchange with the heat equalizer 3, the temperature rises, and the coolant carries the heat into the second branch channel 12. The tapered design of the second branch channel 12 accelerates the coolant, and the increase in flow rate helps to form stronger turbulence, improves the heat exchange coefficient between the coolant and the inner wall of the cold plate, and accelerates the transfer and dissipation of heat. Since each second branch channel 12 is connected to the liquid outlet channel 14, the coolant flowing out of each second branch channel 12 is collected in the liquid outlet channel 14, and then flows out from the liquid outlet channel 14 to the liquid outlet 42.

[0063] In one embodiment, the number of the first branch channels 11 and the second branch channels 12 are at least two respectively. Along the extension direction of the coolant channel 21, the first branch channels 11 and the second branch channels 12 are arranged alternately, and at least two first branch channels 11 are connected to the same liquid inlet channel 13; at least two second branch channels 12 are connected to the same liquid outlet channel 14.

[0064] The first branch channel 11 and the second branch channel 12 are arranged alternately, so that the coolant will undergo a series of "expansion-contraction" processes when flowing through the liquid cooling device. This design utilizes the characteristics of pressure drop and flow rate change to slow down and pressurize the coolant in the first branch channel 11, and distribute it more evenly to each coolant channel 21; while in the second branch channel 12, the coolant is accelerated to form a strong fluid turbulence, which helps to quickly transfer and dissipate heat energy. The alternating arrangement also ensures uniform distribution of heat, avoiding excessive concentration of coolant in certain areas, resulting in insufficient local heat dissipation.

[0065] At least two first branch channels 11 are connected to the same liquid inlet channel 13, and at least two second branch channels 12 are connected to the same liquid outlet channel 14. The purpose of this is to balance the distribution and collection of the coolant. Multiple first branch channels share the same liquid inlet channel, which can ensure that the coolant can be evenly distributed to each branch channel when entering the cold plate, avoiding uneven flow rate and excessive pressure drop in the initial stage of liquid inlet, thereby improving the uniformity and efficiency of heat absorption. Similarly, multiple second branch channels share the same liquid outlet channel, which helps to gather heat when the coolant leaves the cold plate, reduce pressure drop, and ensure that the coolant is discharged quickly and smoothly. At the same time, through the fluid dynamics effect, the coolant can still maintain a certain turbulence in the final discharge stage, further improving the heat dissipation effect.

[0066] In one embodiment, all the first branch channels 11 are connected to the same liquid inlet channel 13 , and all the second branch channels 12 are connected to the same liquid outlet channel 14 .

[0067] In one embodiment, the diverter device 1 also includes a diverter frame 17 and a diverter plate 18 arranged in the diverter frame 17, the first diverter channel 11 and the second diverter channel 12 are respectively opened on the diverter plate 18, and a liquid inlet channel 13 is formed between the diverter plate 18 and the diverter frame 17 on the side of the first diverter channel 11 close to the liquid inlet 41, and a liquid outlet channel 14 is formed between the diverter plate 18 and the diverter frame 17 on the side of the second diverter channel 12 close to the liquid outlet 42.

[0068] In this embodiment, the diverter frame 17 is a square frame structure, which can serve as the installation basis for other parts of the diverter device 1. The two ends of the diverter plate 18 along the extension direction of the coolant channel 21 are connected to the inner wall of the diverter frame 17, so that the diverter plate 18 can be installed and fixed in the diverter frame 17. The first diverter channel 11 and the second diverter channel 12 are realized by the structural design of the diverter plate 18, and can also be realized by processing the diverter plate 18. The first diverter channel 11 and the second diverter channel 12 can be separated by the plate body structure of the diverter plate 18, so that the first diverter channel 11 and the second diverter channel 12 are isolated from each other and can only be connected through the coolant channel 21, so that the coolant can fully flow through the coolant channel 21 and fully exchange heat with the heat equalizing device 3.

[0069] The splitter plate 18 and the two opposite side walls of the splitter frame 17 are spaced apart, and the gap can be used to form the liquid inlet channel 13 and the liquid outlet channel 14, respectively. The splitter plate 18 and the splitter frame 17 can be used to form the liquid inlet channel 13, which is easy to implement. The gap between the first splitter channel 11 and the splitter frame 17 is used to form the liquid inlet channel 13, which can facilitate the connection between each first splitter channel 11 and the liquid inlet channel 13. The gap between the second splitter channel 12 and the splitter frame 17 is used to form the liquid outlet channel 14, which can facilitate the connection between each second splitter channel 12 and the liquid outlet channel 14.

[0070] In one embodiment, the liquid inlet channel 13 and the liquid outlet channel 14 are arranged in parallel, and all the first branch channels 11 and all the second branch channels 12 are located between the liquid inlet channel 13 and the liquid outlet channel 14 .

[0071] The inlet channel 13 and the outlet channel 14 are arranged in parallel, and all the first branch channels 11 and the second branch channels 12 are located between the two, forming a compact and efficient heat dissipation circulation path. The coolant flows between the parallel inlet channels 13 and the outlet channels 14, and through the interaction with the first branch channels 11 and the second branch channels 12, uniform absorption and rapid discharge of heat are achieved. This layout not only ensures the consistency of the flow direction and speed of the coolant, reduces the resistance and energy loss in fluid dynamics, but also improves the efficiency of heat exchange, so that the heat generated by the heat-generating components such as high heat flux density chips can be taken away more evenly and quickly, effectively avoiding the formation of local hot spots, and improving the overall heat dissipation capacity and stability of the system.

[0072] In one embodiment, the diverter plate 18 has a continuous U-shaped or V-shaped structure, and the continuous U-shaped or V-shaped structure of the diverter plate 18 can be used to form a gap between the first diverter channel 11 and the second diverter channel 12, so that the first diverter channels 11 located on the first side of the diverter plate 18 are connected to the liquid inlet channel 13, the second diverter channels 12 located on the second side of the diverter plate 18 are connected to the liquid outlet channel 14, and the first diverter channels 11 located on the first side of the diverter plate 18 are connected to the second diverter channels 12 located on the second side of the diverter plate 18 through the coolant channel 21 located on the lower side of the diverter plate 18.

[0073] In one embodiment, the cross-sections of the first branch channel 11 and the second branch channel 12 are trapezoidal, the small end of the first branch channel 11 faces the liquid inlet channel 13 and is connected to the liquid inlet channel 13, the large end of the first branch channel 11 faces the liquid outlet channel 14 and is separated from the liquid outlet channel 14 by the plate body of the diverter plate 18, the large end of the second branch channel 12 faces the liquid outlet channel 14 and is connected to the liquid outlet channel 14, and the small end of the second branch channel 12 faces the liquid inlet channel 13 and is separated from the liquid inlet channel 13 by the plate body of the diverter plate 18.

[0074] In the present embodiment, the cross-sections of the first branch channel 11 and the second branch channel 12 are both trapezoidal, and the structure is more regular. On the one hand, it is more convenient to realize the processing and forming of the first branch channel 11 and the second branch channel 12, and it is convenient to form a liquid inlet channel 13 between the end of the first branch channel 11 and the branch frame 17, and to form a liquid outlet channel 14 between the end of the second branch channel 12 and the branch frame 17. On the other hand, the trapezoidal structure also makes it easier to realize a gradually expanding or gradually shrinking channel structure, and it is easier to meet the design requirements of the first branch channel 11 and the second branch channel 12.

[0075] In one embodiment, the cross-sections of the first branch channel 11 and the second branch channel 12 may also be trumpet-shaped.

[0076] In one embodiment, two supporting plates 19 are provided on one side of the diverter frame 17 close to the liquid cooling device 2 in the thickness direction. The two supporting plates 19 are relatively arranged at the two ends of the first diverter channel 11 and the second diverter channel 12. The two ends of the diverter plate 18 are respectively arranged on the supporting plates 19 and are spaced apart from the diverter frame 17. A liquid inlet channel 13 is formed between the diverter plate 18, the supporting plate 19 and the diverter frame 17 on the first side of the diverter frame 17, and a liquid outlet channel 14 is formed between the diverter plate 18, the supporting plate 19 and the diverter frame 17 on the second side of the diverter frame 17.

[0077] Two supporting plates 19 are arranged on one side of the flow dividing frame 17 close to the liquid cooling device 2 in the thickness direction. The two supporting plates 19 are arranged oppositely at the two ends of the first flow dividing channel 11 and the second flow dividing channel 12, which not only provide a stable support for the flow dividing plate 18, but also cooperate with the interval between the flow dividing plate 18 and the flow dividing frame 17 to jointly participate in the construction of the liquid inlet channel 13 and the liquid outlet channel 14. Among them, the liquid inlet channel 13 formed between the flow dividing plate 18, the supporting plate 19 and the flow dividing frame 17 on the first side of the flow dividing frame 17 ensures that the coolant can enter the flow dividing device 1 from the liquid inlet 41 and be evenly distributed to each first flow dividing channel 11, thereby improving the heat exchange effect between the coolant and the heat equalizing device.

[0078] The liquid outlet channel 14 formed between the diverter plate 18, the supporting plate 19 and the diverter frame 17 on the second side of the diverter frame 17 plays the role of gathering and guiding the coolant, so that the coolant after completing the heat exchange in the coolant flow channel 21 can be quickly and orderly collected and guided to the liquid outlet 42, thereby reducing the resistance when the coolant is discharged and improving the circulation efficiency of the coolant.

[0079] The combination of the support plate 19 and the diverter plate 18 further stabilizes the structure of the first diverter channel 11 and the second diverter channel 12, avoids structural deformation caused by pressure changes during the flow of the coolant, and ensures the reliability and stability of the diverter device 1 under long-term operation.

[0080] In one embodiment, a first groove 16 is formed between the two supporting plates 19 , and the coolant flow channel 21 is located in the first groove 16 . The top of the coolant flow channel 21 is connected to the first branch flow channel 11 and the second branch flow channel 12 .

[0081] In this embodiment, the bottom surfaces of the two support plates 19 are flush with the bottom surface of the diverter frame 17, and the width of the first groove 16 between the two support plates 19 is consistent with the width of the portion of the liquid cooling device 2 located in the first groove 16, so that a sealing fit is formed between the portion of the liquid cooling device 2 located in the first groove 16 and the first groove 16, and the top surface of the portion located in the first groove 16 is sealed with the bottom surface of the diverter plate 18, so that the first diverter channel 11 and the second diverter channel 12 can be effectively separated and can only be connected through the coolant channel 21, thereby effectively planning the flow path of the coolant and improving the flow efficiency and heat exchange efficiency of the coolant.

[0082] The splitter frame 17, the supporting plate 19 and the splitter plate 18 may be assembled in various ways.

[0083] In one embodiment, the diverter frame 17, the supporting plate 19 and the diverter plate 18 are separately processed and formed, and then fixed together by gluing, screwing, riveting or clamping.

[0084] In one embodiment, the diverter frame 17 and the supporting plate 19 are integrally formed. After the diverter plate 18 is formed separately, it is fixedly connected to the integrally formed structure of the diverter frame 17 and the supporting plate 19 by gluing, screwing, riveting or clamping.

[0085] In one embodiment, the diverter frame 17 and the diverter plate 18 are integrally formed, and after the support plate 19 is separately formed, it is fixedly connected to the integrally formed structure of the diverter frame 17 and the diverter plate 18 by gluing, screwing, riveting or clamping.

[0086] In one embodiment, the support plate 19 and the diverter plate 18 are integrally formed. After the diverter frame 17 is formed separately, the integrally formed structure of the support plate 19 and the diverter plate 18 is fixedly connected to each other by gluing, screwing, riveting or clamping.

[0087] In one embodiment, the flow dividing frame 17, the supporting plate 19 and the flow dividing plate 18 are integrally formed. The integrally formed structure makes the overall structural strength of the flow dividing device 1 better, and can save the connection process between different components, resulting in fewer processes and lower costs.

[0088] In the actual molding process, a suitable molding method can be selected as needed to process the diverter device 1 in a more convenient, better process, and lower cost manner to meet the design requirements in different situations.

[0089] In one embodiment, the first branch channel 11 , the second branch channel 12 , the liquid inlet channel 13 and the liquid outlet channel 14 are coplanarly arranged on a side close to the liquid cooling device 2 .

[0090] In this embodiment, the bottom surfaces of the first branch channel 11, the second branch channel 12, the liquid inlet channel 13 and the liquid outlet channel 14 are coplanar, which realizes the change of flow direction of the coolant when entering and leaving the coolant channel 21, increases the turbulence effect, improves the heat exchange efficiency, and simplifies the structure of the liquid cooling heat dissipation component, reduces the production cost, and when the coolant flows through the liquid cooling device 2, its heat exchange capacity is significantly enhanced, which effectively reduces the temperature of the heating element and improves the stability and reliability of the server.

[0091] In one embodiment, arc chamfers 15 are provided at the inner wall corners of the first branch channel 11 , the inner wall corners of the second branch channel 12 , the connection between the first branch channel 11 and the liquid inlet channel 13 , and the connection between the second branch channel 12 and the liquid outlet channel 14 .

[0092] The introduction of the arc chamfer 15 effectively slows down the sudden change of speed and direction of the coolant when it flows through the corners or channel connections, avoids the local acceleration and vortex phenomenon of the fluid caused by sharp corners, thereby reducing the power loss of the fluid in these parts, ensuring the continuity and stability of the coolant flow, which not only helps to increase the flow speed of the coolant inside the cold plate, but also reduces the overall energy consumption of the system.

[0093] The design of the arc chamfer 15 avoids fluid retention at the right-angle bend, thereby reducing the formation of the boundary layer and lowering the thermal resistance. The thinner the boundary layer, the faster the heat exchange between the coolant and the channel wall, and the heat generated by the heat-generating component such as a high heat flux density chip can be absorbed and taken away more quickly by the liquid cooling device 2, significantly improving the heat dissipation efficiency.

[0094] Since the fluid will have a large impact force on the channel wall when passing through a sharp corner, it is easy to cause stress concentration in these parts, which may cause material fatigue or structural damage in the long run. The arc chamfer 15 disperses the stress generated by the flow of the coolant through a smooth curve transition, improves the stability and durability of the liquid cooling device 2, and extends the service life of the liquid cooling device 2.

[0095] In one embodiment, a cover plate 4 is connected to a side of the flow dividing device 1 away from the liquid cooling device 2 , and the liquid inlet 41 and the liquid outlet 42 are both provided on the cover plate 4 .

[0096] The provision of the cover plate 4 provides a stable assembly structure and sealing for the flow diverter 1, ensuring the change in flow direction of the coolant when entering and leaving the coolant flow channel 21, increasing the turbulence effect and improving the heat exchange efficiency.

[0097] In one embodiment, the flow direction of the coolant in the first branch channel 11 and the second branch channel 12 is perpendicular to the flow direction of the coolant in the coolant channel 21 .

[0098] In one embodiment, each first branch channel 11 is connected to all the coolant channels 21, and each second branch channel 12 is connected to all the coolant channels 21, so that each first branch channel 11 can be connected to the second branch channel 12 through all the coolant channels 21, so that the coolant can more flexibly adjust the flow rate according to the different coolant pressures in the coolant channels 21, so that the coolant can be more evenly distributed to each first branch channel 11 and each second branch channel 12.

[0099] In one embodiment, along a direction perpendicular to the extension direction of the coolant flow channel 21, the liquid inlet 41 and the liquid outlet 42 are respectively located on both sides of the cover plate 4, and along the extension direction of the coolant flow channel 21, the liquid inlet 41 and the liquid outlet 42 are respectively located in the middle position of the cover plate 4.

[0100] The liquid inlet 41 and the liquid outlet 42 are respectively arranged on both sides of the cover plate 4 and in the middle, ensuring that the coolant can be evenly dispersed along the width direction perpendicular to the coolant flow channel 21 after entering the liquid cooling device 2 from the liquid inlet 41, avoiding the problem of excessive heat flux density caused by the coolant deviating to one side of the liquid cooling device 2. At the same time, after completing the heat exchange, the coolant flows out smoothly through the liquid outlet 42 located on the other side of the cover plate 4 and also in the middle, ensuring the uniform coverage of the coolant in the entire liquid cooling device 2, optimizing the heat exchange efficiency.

[0101] In one embodiment, the liquid cooling device 2 includes: a substrate 22; a liquid cooling plate, which is arranged on the substrate 22, and at least one cooling liquid channel 21 is opened on the liquid cooling plate, and the extension direction of the cooling liquid channel 21 is the same as the arrangement direction of the first branch channel 11 and the second branch channel 12.

[0102] The substrate 22 is the direct contact layer between the liquid cooling plate and the heat spreader 3, and is responsible for the initial absorption and conduction of heat. The cooling liquid flow channel 21 provided on the liquid cooling plate is closely combined with the substrate 22, forming an efficient heat conduction and heat exchange interface. The turbulent movement of the coolant in the cooling liquid flow channel 21 and the close contact with the substrate 22 significantly increase the heat transfer rate.

[0103] In one embodiment, the width of the liquid cooling plate in the arrangement direction of the cooling liquid flow channel 21 is consistent with the width of the first groove 16, and the thickness of the liquid cooling plate is consistent with the depth of the first groove 16, so that the liquid cooling plate and the first groove 16 can be well matched, effectively avoiding leakage of the coolant, and improving the flow effect of the coolant and the distribution effect of the coolant in the cooling liquid flow channel 21. In this embodiment, the cooling liquid flow channel 21 runs through both ends of the liquid cooling plate along the extension direction, so that the coolant can flow more fully to various positions of the liquid cooling plate, thereby improving the cooling effect of the coolant.

[0104] The extension direction of the coolant flow channel 21 is the same as the arrangement direction of the first branch channel 11 and the second branch channel 12, and a highly coordinated heat dissipation network is formed inside the liquid cooling device 2. Since each first branch channel 11 is connected to all the coolant flow channels 21, the coolant can enter the coolant flow channel 21 from each first branch channel 11, and then flow to both sides in the coolant flow channel 21, forming a collision with the coolant entering the coolant flow channel 21 from the first branch channel 11 at the adjacent position, thereby improving the turbulent effect of the coolant flow. At the same time, the collision position of the coolant at the adjacent position is located within the range of the second branch channel 12, so that after the coolant collides and converges, it can flow upward into the second branch channel 12, and then flow back to the liquid outlet channel 14 through the second branch channel 12, and flow out from the liquid outlet 42 through the liquid outlet channel 14.

[0105] The flow of the above-mentioned coolant is a multi-stage flow. The flow of the coolant in the coolant flow channel 21 is different from the conventional flow mode. The coolant enters the coolant flow channel 21 from openings at different positions through multiple first branch channels 11 at the same time. The coolant flow channel 21 between adjacent first branch channels 11 forms a flow section. The flow paths of multiple flow sections are all reduced to the paths between adjacent first branch channels 11. At the same time, the flow direction of the coolant changes multiple times. When flowing from the first branch channel 11, it flows in the horizontal direction. In the process of entering the coolant flow channel 21 from the first branch channel 11, the coolant flows vertically downward. When flowing from the coolant flow channel 21 to the second branch channel 11, the coolant flows vertically downward. During the flow of the branch channel 12, the coolant is converted into a horizontal flow. When the coolant converges in the second branch channel 12, it will turn while colliding and converging, and flow into the second branch channel 12 in an upward direction. The coolant in the second branch channel 12 turns into a horizontal movement. During the entire flow of the coolant, the flow path of each flow segment is greatly reduced, thereby reducing the stagnation time of the coolant, so that the coolant that has completed the heat exchange can flow out quickly and quickly take away the heat generated by the heating element. At the same time, the turbulent effect caused by the reversal of the coolant flow process further enhances the heat exchange efficiency of the coolant during the flow process, thereby improving the heat exchange effect.

[0106] In one embodiment, the liquid cooling plate includes at least two channel plates 23 arranged in parallel and spaced apart from each other, and a cooling liquid flow channel 21 is formed between any two adjacent channel plates 23 .

[0107] In this embodiment, the liquid cooling plate is formed by combining a plurality of channel plates 23 arranged in parallel and at intervals, a coolant flow channel 21 is formed between adjacent channel plates 23, and a plurality of coolant flow channels 21 are formed between the plurality of channel plates 23. By controlling the width of the coolant flow channel 21, a microchannel structure can be formed, thereby further improving the heat exchange efficiency of the coolant.

[0108] In one embodiment, the liquid cooling plate can also be a whole plate structure, and the coolant flow channel 21 can be directly processed on the liquid cooling plate. This structure can make the processed coolant flow channel 21 have a more stable and reliable structure, and can realize one-time processing of multiple coolant flow channels 21, which can ensure processing efficiency and processing accuracy, and does not require subsequent installation, effectively preventing problems such as flipping.

[0109] In one embodiment, the shape of the coolant flow channel 21 is wavy, sawtooth, square or trapezoidal. The non-linear design of the coolant flow channel 21 helps to increase the disturbance in the fluid flow. The wavy, sawtooth and other corrugated structures produce tiny eddy and turbulent effects during the flow of the coolant, which can significantly increase the contact area and heat exchange efficiency between the coolant and the flow channel wall compared to the straight channel. When the fluid flows in the corrugated flow channel, its streamlines are continuously disturbed to form a series of tiny turbulences, which will break the laminar state of the fluid, enhance the heat exchange in the boundary layer, and transfer heat from the chip to the coolant more quickly, thereby improving the heat dissipation efficiency.

[0110] In one embodiment, a second groove 24 is provided at the bottom of the base plate 22 of the liquid cooling device 2 , and the heat spreader 3 is embedded in the second groove 24 .

[0111] The second groove 24 provides precise positioning and a stable installation platform for the heat spreader 3. By embedding the heat spreader 3 into the second groove 24 of the substrate 22, the best thermal contact interface between the two is ensured, which is conducive to direct and rapid heat transfer between the chip and the liquid cooling device. The embedded design of the heat spreader reduces the thermal resistance in the heat conduction path and significantly improves the efficiency of heat transfer from the high heat flux density chip to the coolant.

[0112] In one embodiment, the heat-spreading device 3 is a VC (Vapor Chamber) heat-spreading plate.

[0113] The working principle of the liquid cooling heat dissipation assembly of the utility model embodiment is as follows:

[0114] 1. The liquid cooling device 2 is the main heat dissipation tool for high heat flux density chips under normal working conditions of the server. In the embodiment of the utility model, the pressure drop difference of the coolant is used to realize the flow of the coolant inside the liquid cooling device 2. The coolant transported by the CDU and the external pipeline first enters the liquid inlet channel 13 in the diverter device 1 through the liquid inlet 41. After entering the liquid inlet channel 13, the coolant is divided into multiple streams of fluid and enters each water inlet channel of the first diverter channel 11 under the combined action of the internal and external pressure difference and the liquid inlet channel 13. In this process, the direction of the water flow changes from vertical downward to multiple turbulent flows with slower flow rates, and because the liquid is easy to accumulate in the front of the first diverter channel 11, the first diverter channel 11 is designed to be a trumpet shape that is narrow in front and wide in the back to ensure that the coolant can be evenly diverted to the entire liquid cooling device 2.

[0115] 2. Then the coolant in the first branch channel 11 flows downward, impacts the bottom fin-type microchannel substrate layer in the form of a jet, and flows horizontally to both sides along the coolant flow channel 21 in the fin-type microchannel substrate layer. In this process, the coolant flow direction changes from horizontal to vertical downward and then to horizontal to both sides, and its turbulence is strengthened many times, and the convective heat transfer capacity is also significantly enhanced.

[0116] 3. Subsequently, the coolant in the coolant flow channel 21 flows upward again under the combined effect of the internal and external pressure difference and the drainage channel of the second branch channel 12 of the branch device 1, and enters the liquid outlet channel 14 in the branch device 1 after the various water outlet channels of the second branch channel 12 are gathered. In order to ensure the uniform distribution of the coolant, the second branch channel 12 is also designed to be a trumpet shape with a narrow front and a wide back. In this process, the coolant flow direction changes from vertical upward to horizontal.

[0117] 4. Thereafter, the coolant in the liquid outlet channel 14 flows vertically upward into the liquid outlet 42, and the heat it carries is brought to the CDU outside the server via an external pipeline for cooling.

[0118] 5. A VC heat spreader is embedded in the bottom of the substrate 22 by welding, which is used to quickly transfer the heat of the high heat flux density chip to the cold plate. The heat spreader is usually composed of a shell, a capillary structure, a support structure and a working fluid. Among them: the shell is usually made of a high thermal conductivity material (such as copper or aluminum alloy), and its structure is that the upper and lower shells are sealed together by welding or pressing; the capillary structure is usually made of copper powder sintering or copper mesh technology, and has a microstructure inside to support the working fluid and promote the reflux of the liquid; the support structure is a support column arranged inside the shell to maintain the structural stability of the cavity; the working fluid usually uses pure water or other special liquids as the working fluid, these liquids will evaporate after being heated, and the capillary structure can achieve rapid heat transfer.

[0119] When heat is transferred from an external heat source to the evaporation zone of the heat spreader, the working fluid absorbs the heat and quickly vaporizes into steam, absorbing a large amount of heat energy; the vaporized steam diffuses from the high-pressure zone (high-temperature zone) to the low-pressure zone (low-temperature zone) under the action of the pressure difference, carrying a large amount of heat energy; when the steam contacts the inner wall with a lower temperature in the condensation zone, it quickly condenses into liquid, releasing the heat accumulated during the previous evaporation; the condensed coolant flows back to the evaporation zone under the capillary action of the capillary structure, reabsorbs heat and vaporizes again, forming a continuous heat conduction cycle. Since the rapid transfer and dissipation of heat is achieved through the phase change heat transfer mechanism, the thermal conductivity and thermal conductivity of the VC heat spreader are much higher than those of metal. Through the composite manifold microchannel cold plate and the VC heat spreader, the heat of the chip can be quickly and efficiently brought to the cold plate, and then brought to the outside of the server by the cold plate through the coolant.

[0120] In addition to the above-mentioned liquid cooling and heat dissipation components, the present invention also provides a server including the above-mentioned embodiments. For the structures of other parts of the server, please refer to the relevant technology and will not be described in detail herein.

[0121] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0122] The above is a detailed introduction to the embodiments provided by the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the utility model.

Claims

1. A liquid cooling heat dissipation component, characterized in that: It comprises a flow distribution device (1), a liquid cooling device (2) and a heat equalization device (3) which are arranged in sequence; The heat equalizing device (3) is configured to cooperate with the heating element in heat transfer; The liquid cooling device (2) and the heat equalizing device (3) are stacked and cooperate with each other in heat transfer, and the liquid cooling device (2) is provided with a cooling liquid flow channel (21); The flow dividing device (1) is stacked with the liquid cooling device (2), and the flow dividing device (1) comprises a first flow dividing channel (11) and a second flow dividing channel (12) which are arranged at intervals, the first flow dividing channel (11) being configured to be connected to a liquid inlet (41), and the second flow dividing channel (12) being configured to be connected to a liquid outlet (42), the cooling liquid flow channel (21) being provided with openings at least at positions corresponding to the first flow dividing channel (11) and the second flow dividing channel (12), so that the cooling liquid in the first flow dividing channel (11) enters the cooling liquid flow channel (21) along a direction not parallel to the cooling liquid flow channel (21), and the cooling liquid in the cooling liquid flow channel (21) enters the second flow dividing channel (12) along a direction not parallel to the cooling liquid flow channel (21), and the first flow dividing channel (11) and the second flow dividing channel (12) are connected via the cooling liquid flow channel (21).

2. The liquid cooling heat dissipation assembly according to claim 1, characterized in that: In the first branch flow channel (11), along the flow direction of the coolant, the cross-sectional area of ​​the first branch flow channel (11) gradually increases; In the second branch flow channel (12), along the flow direction of the coolant, the cross-sectional area of ​​the second branch flow channel (12) gradually decreases.

3. The liquid cooling heat dissipation assembly according to claim 1, characterized in that: The flow dividing device (1) further comprises a liquid inlet channel (13) and a liquid outlet channel (14); the first flow dividing channel (11) is connected to the liquid inlet (41) via the liquid inlet channel (13), and the second flow dividing channel (12) is connected to the liquid outlet (42) via the liquid outlet channel (14).

4. The liquid cooling heat dissipation assembly according to claim 3, characterized in that: The number of the first branch flow channels (11) and the number of the second branch flow channels (12) are at least two respectively. Along the extension direction of the coolant flow channel (21), the first branch flow channels (11) and the second branch flow channels (12) are arranged alternately. At least two of the first branch flow channels (11) are connected to the same liquid inlet channel (13); and at least two of the second branch flow channels (12) are connected to the same liquid outlet channel (14).

5. The liquid cooling heat dissipation assembly according to claim 4, characterized in that: The flow dividing device (1) further comprises a flow dividing frame (17) and a flow dividing plate (18) arranged in the flow dividing frame (17); the first flow dividing channel (11) and the second flow dividing channel (12) are respectively arranged on the flow dividing plate (18); on a side of the first flow dividing channel (11) close to the liquid inlet (41), the liquid inlet channel (13) is formed between the flow dividing plate (18) and the flow dividing frame (17); and on a side of the second flow dividing channel (12) close to the liquid outlet (42), the liquid outlet channel (14) is formed between the flow dividing plate (18) and the flow dividing frame (17).

6. The liquid cooling heat dissipation assembly according to claim 5, characterized in that: The cross-sections of the first flow channel (11) and the second flow channel (12) are trapezoidal; the small end of the first flow channel (11) faces the liquid inlet channel (13) and is in communication with the liquid inlet channel (13); the large end of the first flow channel (11) faces the liquid outlet channel (14) and is separated from the liquid outlet channel (14) by the plate body of the flow divider (18); the large end of the second flow channel (12) faces the liquid outlet channel (14) and is in communication with the liquid outlet channel (14); the small end of the second flow channel (12) faces the liquid inlet channel (13) and is separated from the liquid inlet channel (13) by the plate body of the flow divider (18).

7. The liquid cooling heat dissipation assembly according to claim 5, characterized in that: Two supporting plates (19) are provided on one side of the diverter frame (17) close to the liquid cooling device (2) in the thickness direction. The two supporting plates (19) are arranged oppositely at the two ends of the first diverter channel (11) and the second diverter channel (12). The two ends of the diverter plate (18) are respectively arranged on the supporting plates (19) and are spaced apart from the diverter frame (17). The liquid inlet channel (13) is formed between the diverter plate (18), the supporting plate (19) and the diverter frame (17) on the first side of the diverter frame (17), and the liquid outlet channel (14) is formed between the diverter plate (18), the supporting plate (19) and the diverter frame (17) on the second side of the diverter frame (17).

8. The liquid cooling heat dissipation assembly according to claim 7, characterized in that: A first groove (16) is formed between the two support plates (19), the coolant flow channel (21) is located in the first groove (16), and the top of the coolant flow channel (21) is connected to the first branch flow channel (11) and the second branch flow channel (12).

9. The liquid cooling heat dissipation assembly according to any one of claims 1 to 8, characterized in that: A cover plate (4) is connected to a side of the flow dividing device (1) away from the liquid cooling device (2); the liquid inlet (41) and the liquid outlet (42) are both arranged on the cover plate (4); along a direction perpendicular to the extension direction of the cooling liquid flow channel (21), the liquid inlet (41) and the liquid outlet (42) are respectively located on two sides of the cover plate (4); and along the extension direction of the cooling liquid flow channel (21), the liquid inlet (41) and the liquid outlet (42) are respectively located in the middle of the cover plate (4).

10. The liquid cooling heat dissipation assembly according to any one of claims 1 to 8, characterized in that: The liquid cooling device (2) comprises: substrate(22); A liquid cooling plate is arranged on the substrate (22), and at least one cooling liquid flow channel (21) is provided on the liquid cooling plate, wherein the extension direction of the cooling liquid flow channel (21) is the same as the arrangement direction of the first branch flow channel (11) and the second branch flow channel (12).

11. The liquid cooling heat dissipation assembly according to claim 10, characterized in that: The liquid cooling plate comprises at least two channel plates (23) arranged in parallel and spaced apart, and a cooling liquid flow channel (21) is formed between any two adjacent channel plates (23); and / or the cooling liquid flow channel (21) is in the shape of a wave, a sawtooth, a square wave or a trapezoidal wave.

12. A server, characterized in that: A liquid cooling heat dissipation component comprising any one of claims 1-11.

Images