Liquid cooling heat dissipation structure and server

Abstract

This invention relates to the field of server technology, specifically disclosing a liquid cooling heat dissipation structure and a server. The liquid cooling heat dissipation structure includes a mounting bracket, multiple coolers, and a heat sink. The multiple coolers are movably mounted on the mounting bracket along a first direction. A screw extending along the first direction is rotatably mounted inside the mounting bracket. Each cooler includes a connecting seat, an adjusting bracket, and a liquid cooling plate. The connecting seat is threaded onto the screw. The adjusting bracket extends along a second direction and is detachably connected to the connecting seat. The second direction is perpendicular to the first direction in a horizontal plane. The liquid cooling plate is mounted on the adjusting bracket and is used to contact the components to be cooled. The liquid cooling plates of the multiple coolers are correspondingly contacted with the multiple components to be cooled. The heat sink includes a circulation pipe and a heat dissipation radiator to circulate the heat exchange medium between the heat dissipation radiator and the multiple liquid cooling plates. The liquid cooling heat dissipation structure of this embodiment can be adjusted at multiple angles to accommodate expansion cards of different sizes and facilitate the insertion and removal of expansion cards.

Description

Technical Field

[0001] This invention belongs to the field of server technology, specifically relating to a liquid cooling heat dissipation structure and a server. Background Technology

[0002] In servers, PCIe expansion cards (such as network adapter cards, RAID cards, NVMe cards, and graphics accelerator cards) are high-power, heat-generating components. In related technologies, liquid cooling structures often use clips and bolts to fix the liquid cooling plate to the PCIe expansion card. However, the mounting hole positions vary significantly between different models and sizes of PCIe expansion cards, resulting in poor versatility of the liquid cooling plate and interference with the card insertion and removal. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a liquid cooling heat dissipation structure. This liquid cooling heat dissipation structure is position-adjustable, adaptable to expansion cards of different sizes, and facilitates the insertion and removal of expansion cards.

[0004] This invention also proposes a server equipped with the aforementioned liquid cooling structure, which can efficiently dissipate heat from multiple PCIe expansion cards simultaneously. The server has strong structural adaptability, stable operation, and facilitates the installation and removal of expansion cards.

[0005] The liquid cooling structure of this invention includes a mounting bracket; multiple coolers, which are movably mounted on the mounting bracket along a first direction. A screw extending along the first direction is rotatably mounted inside the mounting bracket. Each cooler includes a connecting seat, an adjusting bracket, and a liquid cooling plate. The connecting seat is threadedly connected to the screw, and rotation of the screw allows the multiple connecting seats to move synchronously along the first direction. The adjusting bracket extends along a second direction and is detachably connected to the connecting seat. The second direction is perpendicular to the first direction in a horizontal plane. The liquid cooling plate is mounted on the adjusting bracket and used to contact the component to be cooled. The liquid cooling plates of the multiple coolers are correspondingly contacted with the multiple components to be cooled. A radiator includes a circulation pipe and a heat dissipation radiator. The heat dissipation radiator and the multiple liquid cooling plates are connected via the circulation pipe to allow the heat exchange medium to circulate between the heat dissipation radiator and the multiple liquid cooling plates.

[0006] The liquid cooling structure of this invention uses a screw drive to move multiple liquid cooling plates synchronously, ensuring that each liquid cooling plate is in contact with the component to be cooled, facilitating the installation and removal of expansion cards. The split liquid cooling cycle relies on the heat exchange medium for heat exchange, which can stably cool multiple heat-generating components at the same time.

[0007] In some embodiments, the inner side of the mounting bracket is further provided with at least one guide rod parallel to the screw, and the connecting seat is slidably sleeved on the guide rod.

[0008] In some embodiments, the mounting bracket is a frame, and the interior of the frame forms an installation and movement space for the connecting seat. The first direction is the length direction of the frame, and the bottom of the mounting bracket is provided with a connecting block for connecting a chassis or cabinet.

[0009] In some embodiments, the adjustment frame includes a plurality of horizontal supports extending along a second direction and a plurality of vertical supports connected between the plurality of horizontal supports, the plurality of vertical supports being spaced apart along the second direction.

[0010] In some embodiments, the cross brace is provided with a groove in the vertical direction, and the liquid cooling plate is provided with a slider on the side facing the adjustment frame. The slider is slidably disposed in the groove and can move up and down along the groove.

[0011] In some embodiments, the liquid cooling structure further includes a plurality of adjustment holes, a first positioning pin, and a first pin hole. The plurality of adjustment holes are spaced apart on the slider in the vertical direction, the first pin hole is opened on the vertical support, and the first positioning pin passes through the first pin hole and is inserted into the corresponding adjustment hole to lock the vertical position of the slider.

[0012] In some embodiments, the connecting seat has a slot on the side facing the adjusting frame, and the end of the adjusting frame is inserted into the slot.

[0013] In some embodiments, the liquid cooling structure further includes a second positioning pin, and both the connecting seat and the adjusting bracket are provided with a second pin hole that cooperates with the second positioning pin. The adjusting bracket is locked in the slot by the second positioning pin.

[0014] In some embodiments, the liquid cooling structure further includes a locking mechanism disposed on the side wall of the mounting bracket. The locking mechanism includes a ratchet and a pawl. The ratchet is connected to the screw and located on the outside of the mounting bracket. The pawl is rotatably disposed on the mounting bracket and engages with the ratchet.

[0015] In some embodiments, the locking mechanism further includes a protective cover disposed on the side wall of the mounting bracket, the ratchet and the pawl being located inside the protective cover, a lever being connected to the pawl, and a first through hole being provided on the protective cover for the lever to move.

[0016] In some embodiments, the end of the screw passes through the shield and is connected to a handle located on the outside of the shield.

[0017] In some embodiments, the circulation pipeline includes a main inlet pipe and a plurality of inlet branch pipes communicating with the main inlet pipe, as well as a main outlet pipe and a plurality of outlet branch pipes communicating with the main outlet pipe. One end of the main inlet pipe is connected to the outlet end of the heat sink, and the other end of the main inlet pipe is closed. The free ends of the plurality of inlet branch pipes are connected to the inlet ends of each of the liquid cooling plates. One end of the main outlet pipe is connected to the inlet end of the heat sink, and the other end of the main outlet pipe is closed. The free ends of the plurality of outlet branch pipes are connected to the outlet ends of each of the liquid cooling plates.

[0018] In some embodiments, the radiator further includes a pump and a fan, the pump being disposed on the inlet pipe or the outlet pipe, and the fan being disposed on the heat dissipation radiator.

[0019] In some embodiments, the top and bottom of the mounting bracket, the connecting seat, and the adjusting bracket are provided with buckles, and the circulation pipeline is snapped into the buckles.

[0020] The liquid cooling structure of this invention can be adjusted in three dimensions: the first direction, the second direction, and the up and down direction. It can adapt to different specifications of components to be cooled. At the same time, multiple liquid cooling plates move synchronously to achieve fitting and clearance, which facilitates the insertion and removal of expansion cards.

[0021] The server of this invention includes a plurality of heat-dissipating components and a liquid cooling structure as described in any of the above embodiments, wherein the plurality of heat-dissipating components are attached to the plurality of liquid cooling plates in a one-to-one correspondence; the heat-dissipating components are PCIe expansion cards. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the liquid cooling heat dissipation structure of the present invention and the component to be cooled.

[0023] Figure 2 This is a three-dimensional schematic diagram of the liquid cooling heat dissipation structure of the present invention.

[0024] Figure 3 This is a three-dimensional schematic diagram of the mounting bracket and connecting seat of the present invention.

[0025] Figure 4 This is a three-dimensional schematic diagram of the cooler of the present invention.

[0026] Figure 5 This is a three-dimensional schematic diagram of the locking structure of the present invention.

[0027] Figure 6 This is a three-dimensional schematic diagram of the connection seat and the second positioning pin of the present invention.

[0028] Figure label: 100. Liquid cooling structure; 200. Components to be cooled; 1. Mounting bracket; 2. Cooler; 21. Connecting seat; 211. Slot; 212. Limiting sleeve; 22. Adjusting bracket; 221. Horizontal brace; 222. Vertical brace; 2221. First pin hole; 23. Liquid cooling plate; 24. Slider; 241. Adjusting hole; 25. Second pin hole; 3. Radiator; 31. Circulation piping; 311. Main inlet pipe; 312. Branch inlet pipe; 313. Main outlet pipe; 314. Branch outlet pipe; 32. Heat sink; 33. Pump; 34. Fan; 4. Screw; 5. Guide rod; 6. Elastic element; 7. Connecting block; 8. First locating pin; 9. Second locating pin; 10. Locking mechanism; 101. Ratchet; 102. Pad; 103. Protective cover; 104. Lever; 105. First through hole; 106. Handle; 11. Buckle. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] like Figures 1-6 As shown, the liquid cooling structure of this embodiment includes a mounting frame 1, multiple coolers 2, and a radiator 3. The multiple coolers 2 are movably mounted on the mounting frame 1 along a first direction, and a screw 4 extending along the first direction is rotatably mounted inside the mounting frame 1. Each cooler 2 includes a connecting seat 21, an adjusting frame 22, and a liquid cooling plate 23. The connecting seat 21 is threadedly connected to the screw 4, and rotation of the screw 4 allows the multiple connecting seats 21 to move synchronously along the first direction. The adjusting frame 22 extends along a second direction and is detachably connected to the connecting seat 21; the second direction is perpendicular to the first direction in a horizontal plane. The liquid cooling plate 23 is mounted on the adjusting frame 22 and is used to contact the component to be cooled; the liquid cooling plates 23 of the multiple coolers 2 are contacted one-to-one with the multiple components to be cooled. The radiator 3 includes a circulation pipe 31 and a heat dissipation radiator 32. The heat dissipation radiator 32 and the multiple liquid cooling plates 23 are connected via the circulation pipe 31 to allow the heat exchange medium to circulate between the heat dissipation radiator 32 and the multiple liquid cooling plates 23.

[0031] Specifically, in this embodiment of the liquid cooling structure, the mounting bracket 1 has a screw 4 extending in a first direction inside, and the connecting seats 21 of multiple coolers 2 are all threadedly connected to the screw 4. When the screw 4 rotates, the multiple connecting seats 21 move synchronously in the first direction, thereby causing each adjusting bracket 22 and the liquid cooling plate 23 to move closer to or further away from the corresponding PCIe expansion card. This synchronous driving method allows multiple liquid cooling plates 23 to simultaneously press against their respective components to be cooled, or to simultaneously move backward to avoid them, facilitating the insertion and removal of the cards for maintenance. Secondly, the adjusting bracket 22 extends in a second direction and is detachably connected to the connecting seat 21, and the liquid cooling plate 23 is disposed on the adjusting bracket 22. The first direction is usually the insertion and removal direction of the PCIe expansion card, and is actually perpendicular to the mounting bracket 1 as a whole.

[0032] By replacing the adjustment bracket 22 with one of different lengths, or adjusting the mounting position of the liquid cooling plate 23 on the adjustment bracket 22, it can accommodate PCIe expansion cards of different sizes and chip positions, improving versatility. It also allows the liquid cooling plate 23 to directly contact the core heat-generating area of ​​the component to be cooled, enabling heat to be transferred directly from the chip to the heat exchange medium in the internal flow channels of the liquid cooling plate 23. This results in a short heat exchange path, low thermal resistance, and high heat dissipation efficiency.

[0033] Finally, the heat sink 3 connects the heat sink 32 to multiple liquid cooling plates 23 through the circulation pipe 31, adopting a split liquid cooling heat dissipation. The heat exchange medium circulates between the heat sink 32 and each liquid cooling plate 23, continuously removing heat and ensuring the uniformity and stability of heat dissipation for multiple boards.

[0034] In some specific embodiments, the screw 4 is mounted on the end plates at both ends of the frame via bearings. The threaded section of the screw 4 covers the entire installation range of the cooler 2, or the threaded section consists of multiple segments, each corresponding to a specific installation range of each connecting seat 21. The connecting seat 21 is a metal block with threaded holes inside that mate with the screw 4.

[0035] In some specific embodiments, the upper and lower surfaces of the connecting seat 21 are provided with guide surfaces that cooperate with the inner surface of the mounting bracket 1 to prevent the connecting seat 21 from rotating with the screw 4.

[0036] In some specific embodiments, the liquid cooling plate 23 is a copper or aluminum plate with an internal serpentine flow channel. The surface facing the PCIe expansion card is coated with thermal grease or has thermal pads attached to enhance heat transfer in contact with the chip. The heat sink 32 uses a finned tube heat exchanger, and a fan 34 is configured on the outside for forced convection cooling. The circulation pipe 31 uses flexible hoses or rigid metal pipes, and the liquid cooling plates 23 are connected in parallel to ensure uniform liquid supply to each plate.

[0037] In some specific embodiments, the connecting seat 21 has a screw hole, and the screw 4 passes through the screw hole and is threaded into the screw hole.

[0038] In some embodiments, the inner side of the mounting bracket 1 is further provided with at least one guide rod 5 parallel to the screw 4, and the connecting seat 21 is slidably sleeved on the guide rod 5. The mounting bracket 1 is a frame, and the interior of the frame forms a space for the installation and movement of the connecting seat 21. The first direction is the length direction of the frame, and the bottom of the mounting bracket 1 is provided with a connecting block 7, which is used to connect the chassis or cabinet.

[0039] The guide rod 5 is arranged parallel to the screw 4, and the connecting seat 21 obtains linear guidance constraint through the guide rod 5 while undergoing threaded transmission. The guide rod 5 restricts the rotational freedom of the connecting seat 21 about the axis of the screw 4, ensuring that the connecting seat 21 only translates along the first direction and does not deflect or tilt. Preferably, two guide rods 5 can be provided, located on both sides of the screw 4, so that the force on the connecting seat 21 is more symmetrical and balanced.

[0040] Mounting bracket 1 adopts a frame structure, with the interior of the frame forming an installation and movement space for the connecting seat 21. A connecting block 7 is set at the bottom of the frame, with mounting holes on the connecting block 7. The mounting bracket 1 is fixed to the corresponding mounting surface of the server chassis or cabinet by bolts, ensuring that the entire liquid cooling structure remains stable during operation and does not shift due to vibration or internal forces in the pipeline.

[0041] Preferably, an elastic element 6 is provided between two adjacent connecting seats 21, and the elastic element 6 is sleeved on the guide rod 5. Each connecting seat 21 has a limiting cylinder 212 on both end faces along the first direction, and the limiting cylinder 212 is sleeved on the guide rod 5. The two ends of the elastic element 6 are respectively sleeved on the opposing limiting cylinders 212 of the two adjacent connecting seats 21. The elastic element 6 (such as a compression spring) is sleeved on the guide rod 5 and located between adjacent connecting seats 21. When the screw 4 drives the connecting seat 21 to move towards the PCIe expansion card, the elastic element 6 is gradually compressed, providing mechanical damping for the feed of the connecting seat 21, that is, the rotation of the screw 4 has a certain damping. This damping effect makes the process of the liquid cooling plate 23 approaching the chip smoother, avoiding rigid impact of the connecting seat 21 and the liquid cooling plate 23 on the chip and causing damage to the chip or substrate. The limiting sleeve 212 is sleeved on the guide rod 5 to radially limit the two ends of the elastic element 6, preventing the elastic element 6 from buckling laterally or deviating from the axis during compression, and ensuring the stable operation of the elastic element 6.

[0042] In some embodiments, the adjustment frame 22 includes a plurality of horizontal supports 221 extending along a second direction and a plurality of vertical supports 222 connected between the plurality of horizontal supports 221, the plurality of vertical supports 222 being spaced apart along the second direction. The horizontal supports 221 have grooves formed along the vertical direction, and a slider 24 is provided on the side of the liquid cooling plate 23 facing the adjustment frame 22. The slider 24 is slidably disposed within the grooves and can move up and down along the grooves. The adjustment frame 22 also includes a plurality of adjustment holes 241, a first positioning pin 8, and a first pin hole 2221. The plurality of adjustment holes 241 are spaced apart along the vertical direction on the slider 24, and the first pin hole 2221 is formed on the vertical support 222. The first positioning pin 8 passes through the first pin hole 2221 and is inserted into the corresponding adjustment hole 241 to lock the vertical position of the slider 24.

[0043] Specifically, the adjustment frame 22 consists of a frame structure composed of horizontal supports 221 and vertical supports 222. The horizontal supports 221 extend along the second direction, typically two at the top and bottom, providing a mounting base for the liquid cooling plate 23. The vertical supports 222 connect the horizontal supports 221, enhancing the overall rigidity and torsional resistance of the adjustment frame 22. Multiple vertical supports 222 are spaced apart along the second direction, forming multi-point support, making the adjustment frame 22 less prone to deformation when bearing the weight of the liquid cooling plate 23 and subjected to compressive reaction forces. Furthermore, the multiple vertical supports 222 facilitate the cooperation of the slider with different vertical supports 222, and also provide adjustment space for the liquid cooling plate 23 along the second direction.

[0044] The cross brace 221 has a sliding groove along its vertical direction, and a slider 24 is provided on the back side of the liquid cooling plate 23. The slider 24 is slidably disposed in the sliding groove and can move up and down along the sliding groove. This structure makes the installation height of the liquid cooling plate 23 on the adjustment bracket 22 adjustable. Different sizes and models of PCIe expansion cards have different chip height positions on the board. By sliding the liquid cooling plate 23 up and down along the sliding groove, aligning the liquid cooling plate 23 with the chip, and then locking the position, the same liquid cooling structure can be adapted to chips of different heights.

[0045] Preferably, the cross-section of the slider 24 is T-shaped, and the groove can be a through groove running vertically through the top and bottom. The lower end of the groove can also be a closed structure to prevent the slider 24 from coming out of the groove.

[0046] Multiple adjustment holes 241 are spaced apart along the vertical direction on the slider 24, and a first pin hole 2221 is provided on the vertical support 222. When the liquid cooling plate 23 slides along the groove to the target height, one of the adjustment holes 241 on the slider 24 aligns with the first pin hole 2221 on the vertical support 222, and the first positioning pin 8 is inserted to lock the vertical position of the slider 24. This positioning method has a simple structure and is easy to operate, and the coarse adjustment and locking of the height of the liquid cooling plate 23 can be completed without the aid of tools.

[0047] Preferably, the first positioning pin 8 is a positioning pin with a threaded section. It passes through the first pin hole 2221 on the vertical support 222 and is screwed into the corresponding adjustment hole 241 on the slider 24, serving both positioning and fastening functions. When it is necessary to adjust the height of the liquid cooling plate 23, unscrew the first positioning pin 8, slide the liquid cooling plate 23 up and down to the target position, and then screw the first positioning pin 8 back in.

[0048] In some embodiments, the connecting seat 21 has a slot 211 on the side facing the adjusting frame 22, and the end of the adjusting frame 22 is inserted into the slot 211. A second positioning pin 9 is also included, and both the connecting seat 21 and the adjusting frame 22 have second pin holes 25 that cooperate with the second positioning pin 9. The adjusting frame 22 is locked in the slot 211 by the second positioning pin 9.

[0049] A slot 211 is provided on the side of the connecting seat 21 facing the adjusting bracket 22. The end of the adjusting bracket 22 is inserted into the slot 211, enabling quick connection between the adjusting bracket 22 and the connecting seat 21. This connection method does not require threaded fastening; initial positioning is achieved simply by aligning the end of the adjusting bracket 22 with the slot 211 and pushing it in, resulting in high assembly efficiency. The slot 211 can be a rectangular slot or a dovetail slot, with an appropriate fitting clearance between the inner wall of the slot and the outer wall of the end of the adjusting bracket 22, facilitating insertion while providing a certain degree of positioning accuracy.

[0050] The second positioning pin 9 passes through the second pin hole 25 on the connecting seat 21 and the adjusting bracket 22, locking the adjusting bracket 22 into the slot 211. The second pin hole 25 is respectively opened on the connecting seat 21 and the adjusting bracket 22. When the end of the adjusting bracket 22 is fully inserted into the slot 211, the second pin hole 25 on the connecting seat 21 and the second pin hole 25 on the adjusting bracket 22 are naturally aligned. Inserting the second positioning pin 9 can prevent the adjusting bracket 22 from coming out of the slot 211.

[0051] Preferably, the number and size of the slots 211 match the number and size of the cross braces 221 to ensure a stable connection between the adjusting seat and the connecting seat 21. A second pin hole 25 is formed on the upper surface of the connecting seat 21, penetrating the slot 211. Corresponding second pin holes 25 are formed at the ends of the cross braces 221 of the adjusting bracket 22. The second positioning pin 9 is a cylindrical pin with a cotter pin hole; after being inserted into the second pin hole 25, a cotter pin is inserted into the cotter pin hole to prevent loosening.

[0052] In some embodiments, the mounting bracket 1 further includes a locking mechanism 10 disposed on the side wall of the mounting bracket 1. The locking mechanism 10 includes a ratchet 101 and a pawl 102. The ratchet 101 is connected to the screw 4 and located outside the mounting bracket 1. The pawl 102 is rotatably disposed on the mounting bracket 1 and engages with the ratchet 101. The locking mechanism 10 also includes a protective cover 103 disposed on the side wall of the mounting bracket 1. The ratchet 101 and the pawl 102 are located inside the protective cover 103. A lever 104 is connected to the pawl 102. A first through hole 105 for the lever 104 to move is provided on the protective cover 103. The end of the screw 4 passes through the protective cover 103 and is connected to a handle 106, which is located outside the protective cover 103.

[0053] The locking mechanism 10 is used to lock the screw 4 in one direction. A ratchet 101 is fixedly connected to the screw 4 and located on the outside of the mounting bracket 1; a pawl 102 is rotatably mounted on the side wall of the mounting bracket 1 and engages with the ratchet 101 under gravity or spring action. When the operator rotates the screw 4 via the handle 106, driving the connecting seat 21 and the liquid cooling plate 23 to move towards and press against the PCIe expansion card, and then stops rotating the handle 106, the pawl 102 automatically falls into the tooth groove of the ratchet 101 under gravity, preventing the screw 4 from rotating in the opposite direction, thereby locking the pressing position of the liquid cooling plate 23 and preventing the screw 4 from loosening and the pressure of the liquid cooling plate 23 from dropping due to server vibration. The engagement of the ratchet 101 and the pawl 102 achieves one-way locking of the screw 4; forward rotation (pressing direction) is unimpeded, while reverse rotation (loosening direction) is prevented, making operation convenient and locking reliable.

[0054] A protective cover 103 is installed on the outside of the ratchet 101 and pawl 102. The cover 103 prevents accidental contact between foreign objects and the ratchet 101 or pawl 102, thus preventing locking failure, and also protects against oil or dust. A first through hole 105 is provided in the cover 103 to allow the lever 104 to move. When it is necessary to release the lock, the operator uses the lever 104 to move the pawl 102, disengaging it from the ratchet 101, allowing the screw 4 to rotate in the opposite direction. A handle 106 is connected to the end of the screw 4 and located outside the cover 103, allowing the operator to directly rotate the screw 4. In some embodiments, the circulation pipeline 31 includes a main inlet pipe 311 and a plurality of inlet branch pipes 312 communicating with the main inlet pipe 311, as well as a main outlet pipe 313 and a plurality of outlet branch pipes 314 communicating with the main outlet pipe 313. One end of the main inlet pipe 311 is connected to the outlet end of the heat sink 32, and the other end of the main inlet pipe 311 is closed. The free ends of the plurality of inlet branch pipes 312 are connected to the inlet ends of each liquid cooling plate 23. One end of the main outlet pipe 313 is connected to the inlet end of the heat sink 32, and the other end of the main outlet pipe 313 is closed. The free ends of the plurality of outlet branch pipes 314 are connected to the outlet ends of each liquid cooling plate 23. The radiator 3 also includes a pump 33 and a fan 34. The pump 33 is disposed on the main inlet pipe 311 or the main outlet pipe 313, and the fan 34 is disposed on the heat sink 32. Mounting bracket 1, connecting seat 21 and adjusting bracket 22 are all provided with buckles 11 at the top and bottom, and the circulation pipe 31 is snapped into the buckle 11.

[0055] The circulation pipeline 31 adopts a branch structure with a main pipe and branch pipes. The inlet main pipe 311 and the outlet main pipe 313 serve as the main pipes for coolant distribution and convergence, respectively. Multiple inlet branch pipes 312 and outlet branch pipes 314 connect each liquid cooling plate 23 in parallel to the main pipe system. This parallel structure ensures that each liquid cooling plate 23 has an independent liquid supply channel, and the flow distribution of each liquid cooling plate 23 is uniform and does not affect each other. After being cooled by the radiator 32, the coolant is distributed from the inlet main pipe 311 to each inlet branch pipe 312, and then flows into each liquid cooling plate 23. The coolant absorbed by each liquid cooling plate 23 flows into the outlet main pipe 313 through each outlet branch pipe 314, and then flows back to the radiator 32 for cooling.

[0056] Pump 33 is installed on the inlet pipe 311 or outlet pipe 313 to provide power for the flow of coolant in the circulation pipe 31. Fan 34 is installed on the radiator 32 to enhance the heat exchange between the radiator 32 and the surrounding air through forced convection, thereby improving the heat dissipation capacity of the radiator 32. The heat exchange medium in the circulation pipe 31 can be deionized water, ethylene glycol aqueous solution, or other commercially available coolant.

[0057] The clip 11 is an elastic clip 11, which has good clamping ability and elastic deformation ability, and can reliably fix the circulation pipeline 31 to the mounting bracket 1, the connecting seat 21 and the adjusting bracket 22, preventing the pipeline from shaking, sagging or interfering with other components. At the same time, it facilitates the installation, disassembly and maintenance of the pipeline.

[0058] Preferably, the buckle 11 is a C-shaped elastic plastic buckle 11 or a metal buckle 11, which is fixed to the top and bottom edges of the mounting bracket 1, the connecting seat 21 and the adjusting bracket 22 by screws, and the circulation pipe 31 can be fixed by inserting it into the C-shaped opening.

[0059] The following describes a server according to an embodiment of the present invention, including a plurality of heat-dissipating components and a liquid cooling structure as described in any of the above embodiments, wherein the plurality of heat-dissipating components are attached to a plurality of liquid cooling plates 23 in a one-to-one correspondence; the heat-dissipating components are PCIe expansion cards.

[0060] The server internally houses multiple PCIe expansion cards, such as GPU accelerator cards, network adapter cards, RAID controller cards, and NVMe expansion cards. These expansion cards are inserted into PCIe slots 211 on the server motherboard. During operation, these chips generate significant heat, requiring efficient and reliable cooling measures. This embodiment integrates the aforementioned liquid cooling structure internally into the server, ensuring that each liquid cooling plate 23 is individually attached to its corresponding PCIe expansion card for targeted heat dissipation.

[0061] Mounting bracket 1 is fixed inside the server chassis via connecting block 7 at its bottom, located on one side of the PCIe expansion card slot 211 area. After each PCIe expansion card is inserted into the motherboard slot 211 in the conventional manner, the operator turns handle 106, driving screw 4 to rotate, causing each connector 21 and liquid cooling plate 23 to move synchronously towards the PCIe expansion card until each liquid cooling plate 23 is pressed firmly against the chip surface of the corresponding expansion card. Pawl 102 automatically locks screw 4, keeping the liquid cooling plate 23 in a pressed state. Pump 33 and fan 34 are started, and coolant circulates. The heat from each expansion card chip is transferred to heat sink 32 through liquid cooling plate 23 and circulation pipe 31, and then dissipated to the outside of the server or the server room environment by fan 34.

[0062] When a PCIe expansion card needs to be replaced, the lever 104 is moved to disengage the pawl 102 from the ratchet 101, and the handle 106 is rotated in the opposite direction. The connectors 21 and the liquid cooling plate 23 move backward synchronously, away from the surface of the expansion card chip, leaving space for the PCIe expansion card to be pulled out.

[0063] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A liquid-cooled heat dissipation structure, characterized in that, include: Mounting rack; Multiple coolers are movably mounted on a mounting frame along a first direction. A screw extending along the first direction is rotatably mounted inside the mounting frame. Each cooler includes a connecting seat, an adjusting frame, and a liquid cooling plate. The connecting seat is threaded onto the screw. Rotation of the screw allows multiple connecting seats to move synchronously along the first direction. The adjusting frame extends along a second direction and is detachably connected to the connecting seat. The second direction is perpendicular to the first direction in a horizontal plane. The liquid cooling plate is mounted on the adjusting frame and used to contact the component to be cooled. The liquid cooling plates of the multiple coolers are correspondingly contacted with the multiple components to be cooled. A radiator, comprising a circulation pipe and a heat sink, wherein the heat sink and a plurality of liquid cooling plates are connected via the circulation pipe to allow the heat exchange medium to circulate between the heat sink and the plurality of liquid cooling plates.

2. The liquid cooling heat dissipation structure according to claim 1, characterized in that, The inner side of the mounting bracket is also provided with at least one guide rod parallel to the screw, and the connecting seat is slidably sleeved on the guide rod.

3. The liquid cooling heat dissipation structure according to claim 2, characterized in that, The mounting bracket is a frame, and the interior of the frame forms a space for the installation and movement of the connecting seat. The first direction is the length direction of the frame. The bottom of the mounting bracket is provided with a connecting block, which is used to connect the chassis or cabinet.

4. The liquid cooling heat dissipation structure according to claim 1, characterized in that, The adjustment frame includes a plurality of horizontal supports extending along a second direction and a plurality of vertical supports connected between the plurality of horizontal supports, the plurality of vertical supports being spaced apart along the second direction.

5. The liquid cooling heat dissipation structure according to claim 4, characterized in that, The cross brace has a sliding groove along the vertical direction, and the liquid cooling plate has a slider on the side facing the adjustment frame. The slider is slidably disposed in the sliding groove and can move up and down along the sliding groove.

6. The liquid cooling heat dissipation structure according to claim 5, characterized in that, The adjustment frame also includes multiple adjustment holes, a first positioning pin, and a first pin hole. The multiple adjustment holes are spaced apart on the slider in the vertical direction. The first pin hole is opened on the vertical support. The first positioning pin passes through the first pin hole and is inserted into the corresponding adjustment hole to lock the vertical position of the slider.

7. The liquid cooling heat dissipation structure according to claim 1, characterized in that, The connecting seat has a slot on the side facing the adjusting frame, and the end of the adjusting frame is inserted into the slot.

8. The liquid cooling heat dissipation structure according to claim 7, characterized in that, It also includes a second positioning pin, and both the connecting seat and the adjusting frame are provided with a second pin hole that cooperates with the second positioning pin. The adjusting frame is locked in the slot by the second positioning pin.

9. The liquid cooling heat dissipation structure according to claim 1, characterized in that, It also includes a locking mechanism provided on the side wall of the mounting bracket, the locking mechanism including a ratchet and a pawl, the ratchet being connected to the screw and located on the outside of the mounting bracket, and the pawl being rotatably disposed on the mounting bracket and engaging with the ratchet.

10. The liquid-cooled heat dissipation structure according to claim 9, characterized in that, The locking mechanism also includes a protective cover on the side wall of the mounting bracket, the ratchet and the pawl are located inside the protective cover, a lever is connected to the pawl, and a first through hole is provided on the protective cover for the lever to move.

11. The liquid-cooled heat dissipation structure according to claim 10, characterized in that, The end of the screw passes through the protective cover and is connected to a handle, which is located on the outside of the protective cover.

12. The liquid-cooled heat dissipation structure according to claim 1, characterized in that, The circulation pipeline includes a main inlet pipe and multiple inlet branch pipes connected to the main inlet pipe, as well as a main outlet pipe and multiple outlet branch pipes connected to the main outlet pipe. One end of the main inlet pipe is connected to the outlet end of the heat sink, and the other end of the main inlet pipe is closed. The free ends of the multiple inlet branch pipes are connected to the inlet ends of each of the liquid cooling plates. One end of the main outlet pipe is connected to the inlet end of the heat sink, and the other end of the main outlet pipe is closed. The free ends of the multiple outlet branch pipes are connected to the outlet ends of each of the liquid cooling plates.

13. The liquid-cooled heat dissipation structure according to claim 12, characterized in that, The radiator also includes a pump and a fan. The pump is located on the liquid inlet pipe or the liquid outlet pipe, and the fan is located on the heat dissipation radiator.

14. The liquid-cooled heat dissipation structure according to claim 12, characterized in that, The mounting bracket, the connecting seat, and the adjusting bracket are all provided with buckles at the top and bottom, and the circulation pipeline is snapped into the buckles.

15. A server, characterized in that, It includes multiple components to be cooled and a liquid cooling structure as described in any one of claims 1-14, wherein the multiple components to be cooled are attached to the multiple liquid cooling plates in a one-to-one correspondence; the components to be cooled are PCIe expansion cards.

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