A brazed aluminum plate-fin heat exchanger and method for a data center liquid cooling device

Abstract

The application discloses a brazed aluminum plate-fin heat exchanger for a data center liquid cooling device and a method, and belongs to the technical field of electronic equipment heat dissipation. The device is characterized in that the opposite sides of each heat exchange component body are communicated with a plurality of connecting pipes with the same number, and the opening positions of the connecting pipes on each side are the same; the two connecting pipes at the same opening position on the adjacent two heat exchange component bodies are communicated with the inlet and outlet of the control valve through the liquid delivery pipes, respectively. The device realizes the quick and rigid connection of the fluid channel between the adjacent heat exchange component bodies through the connecting assembly, has a simple structure, greatly simplifies the operation steps, improves the installation and maintenance efficiency in the narrow space of the data center, prevents the leakage of the cooling liquid at the connecting interface through the leakage prevention assembly, significantly improves the sealing reliability and safety of the operation of the whole liquid cooling loop, and avoids the risk of data center equipment failure caused by the leakage of the cooling liquid.

Description

Technical Field

[0001] This invention belongs to the field of heat dissipation technology for electronic devices, and specifically relates to a brazed aluminum plate-fin heat exchanger and method for data center liquid cooling devices. Background Technology

[0002] With the rapid development of cloud computing, artificial intelligence, and high-performance computing technologies, the power density of data center servers continues to rise, and the heat generated per unit volume is increasing dramatically. Traditional air-cooling methods are gradually approaching their physical limits in terms of heat dissipation efficiency and energy consumption. To address this challenge, liquid cooling technology for data centers has emerged. This technology uses liquid as the cooling medium to dissipate heat from key components such as heat-generating chips through direct or indirect contact. Its core advantage lies in the fact that liquids have higher thermal conductivity and specific heat capacity than air, enabling them to efficiently and quickly remove concentrated heat, thereby ensuring the stable operation of IT equipment within a safe temperature range and providing crucial support for the green, low-carbon, and high-density deployment of data centers. In this liquid cooling system, the brazed aluminum plate-fin heat exchanger plays a vital role. It is a highly efficient and compact heat exchange unit manufactured using vacuum brazing technology. The complex fins formed by stamping are welded to aluminum partitions in a single process at high temperatures to create an integral structure. Its core function is to achieve efficient, isolated heat exchange between the cooling liquid and another liquid, ultimately transferring the heat generated by the equipment to the external environment. It is the core component that ensures the heat dissipation efficiency of the entire liquid cooling system.

[0003] Chinese Patent CN118758089B discloses a high-efficiency plate-fin heat exchanger, including a heat exchange component body, a liquid guide pipe, and a control pipe. Four sets of control valves are provided between each pair of adjacent heat exchange component bodies, and the control pipe is fixed to both ends of the control valves. The device also includes a connection unit installed at both ends of the control pipe. The connection unit is used for quick connection between the liquid guide pipe and the control pipe. A drive unit for torque transmission to the output end of the connection unit is installed on one side of the control valve. This invention improves the existing configuration and installation method of heat exchangers. Through the coordinated design of the connection unit and drive unit, it enables quick and tight connection between heat exchange components. Installation and disassembly do not require excessive time and manpower, avoiding the loosening of bolted connections during long-term use, and ensuring the stability and reliability of the heat exchanger during operation.

[0004] The aforementioned device employs a scheme that drives an external gear ring to synchronously rotate multiple surrounding threaded cylinders, thereby driving a threaded rod to achieve connection. While this scheme aims for rapid connection, its connection structure is complex, with a long transmission chain and numerous parts, requiring high installation precision. Even a slight increase in the rotational resistance of any threaded cylinder or a minute deviation in the meshing clearance of any transmission gear will be amplified in the lengthy transmission chain. This not only obstructs the advancement of individual threaded rods but also easily causes multiple connection points to fail to reach the predetermined locking position synchronously, making on-site installation and maintenance difficult and unreliable. Operators need to repeatedly debug and even disassemble for inspection, greatly reducing the efficiency of rapid deployment and maintenance within the installation space. On the other hand, even if installation is barely completed, this inherent asynchrony can easily lead to uneven stress on various connection points, resulting in an unbalanced pressure distribution on the sealing surface, creating a long-term hidden danger of coolant leakage and directly threatening the stability and safety of data center operations.

[0005] Therefore, there is an urgent need to provide a new type of brazed aluminum plate-fin heat exchanger for data center liquid cooling systems. Summary of the Invention

[0006] The purpose of this invention is to overcome the deficiencies in the prior art and to provide a brazed aluminum plate-fin heat exchanger and method for a data center liquid cooling device.

[0007] The specific technical solution adopted in this invention is as follows:

[0008] In a first aspect, the present invention provides a brazed aluminum plate-fin heat exchanger for a data center liquid cooling device, comprising a plurality of heat exchange component bodies, each heat exchange component body having a plurality of identical connecting pipes connected to opposite sides, and the connecting pipes on each side being positioned identically; two connecting pipes on two adjacent heat exchange component bodies located at the same position are respectively connected to the inlet and outlet of a control valve via a liquid inlet pipe; each control valve is externally equipped with a connecting assembly for fixing the connecting pipes and the liquid inlet pipes, and a leak-proof assembly for sealing is installed at the joint of each set of liquid inlet pipes and connecting pipes.

[0009] Preferably, the two infusion tubes and two connecting tubes located on both sides of the same control valve are axially collinear.

[0010] Preferably, the connecting assembly includes a support frame fixed to one side of the control valve; a bidirectional screw is rotatably connected to the support frame along the axial direction, with both ends of the bidirectional screw connected to first connecting rings located at the outer ends of the two infusion tubes, and a first guide rod is fixedly connected between the two first connecting rings; each of the two infusion tubes is slidably fitted with a sliding sleeve that is threadedly connected to the outside of the bidirectional screw, and by rotating the bidirectional screw, the two sliding sleeves can move synchronously in opposite directions or in a straight line along the outside of the infusion tubes; a second connecting ring is fixedly connected to the outer end of the connecting tube adjacent to the infusion tube, and the first and second connecting rings are respectively provided with n The first and second through-holes are arranged in a ring array and their positions correspond one-to-one; both sliding sleeves are equipped with fixing components that can be embedded in each pair of first and second through-holes to fix the infusion tube and connecting tube.

[0011] Preferably, a first bevel gear that can rotate axially is fixedly sleeved in the middle of the bidirectional screw, and a second bevel gear that can rotate perpendicular to the axial direction of the bidirectional screw is rotatably connected to the support frame. The first bevel gear and the second bevel gear mesh with each other. A handle is rotatably connected to the outside of the support frame, and the output end of the handle passes through the support frame and is fixedly connected to the center of the second bevel gear. By rotating the handle, the second bevel gear is driven to rotate, and the meshing transmission causes the first bevel gear and the bidirectional screw to rotate around the axis.

[0012] Preferably, a positioning plate is fixed to the outside of the grip, and the positioning plate has several positioning holes arranged in a circular array; the positioning bolts can be screwed into the support frame through the positioning holes to prevent the grip from rotating.

[0013] Preferably, the fixing assembly includes a movable sleeve slidably sleeved outside the sliding sleeve; an axially arranged one-way screw is rotatably connected to the outside of the sliding sleeve, and the one-way screw is threadedly connected to the outside of the movable sleeve; a second guide rod is axially fixedly connected to the outside of the sliding sleeve, and the movable sleeve is slidably sleeved outside the second guide rod; a fixed connection is made to the outer side of the movable sleeve. n The support rods are arranged in a ring array, with each support rod corresponding to the position of each set of first and second through holes. A lifting groove is radially formed on each support rod, and a lifting block is slidably connected within the lifting groove. One end of the lifting block is hinged to a connecting rod, and the other end of the connecting rod is hinged to a hinge seat, which is fixed to the inner side of the outside of the movable sleeve. A fixing rod is connected to the outer end of the lifting block, and an insertion rod that can be inserted into the first and second through holes is connected to the end of the fixing rod. By rotating a one-way screw, the movable sleeve can slide axially along the second guide rod, thereby pushing the lifting block vertically up and down within the lifting groove via the connecting rod on the hinge seat, thus causing the insertion rod at the end of the fixing rod to be raised or lowered in front of the first through hole.

[0014] Preferably, a rotating bolt is rotatably connected to the side of the sliding sleeve near the control valve, and the output end of the rotating bolt passes through the sliding sleeve and is fixedly connected to one end of the one-way screw; rotating the rotating bolt can drive the one-way screw to rotate.

[0015] Preferably, the leak-proof assembly includes an annular storage tank located outside the infusion tube and near one end of the connecting tube; an annular plate is slidably connected inside the annular storage tank, and an annular sealing strip is fixedly connected to the side of the annular plate near the connecting tube, the annular sealing strip completely sealing the annular storage tank at that location; a [missing information - likely a component or element] is fixedly connected to the other side of the annular plate. m A first rack is arranged in a ring array, the first rack is arranged axially, and the inner wall of the ring storage tank is provided with... m Each infusion tube has a rotating port connected to the outside, and a spur gear rotatably connects to the port, meshing with the first rack. An annular sliding plate is slidably fitted onto the outside of the infusion tube adjacent to the second connecting ring, and the inner side of the annular sliding plate is fixedly connected to a gear that meshes with each spur gear. m A second rack; several push rods arranged in a ring array are fixedly connected to the outer side of the sliding sleeve, and the push rods are used to push the ring moving plate to reset from the opposite direction.

[0016] Preferably, each of the rotating openings is provided with a stop for limiting the second rack.

[0017] Secondly, the present invention provides a method for fixing and sealing a brazed aluminum plate-fin heat exchanger for a data center liquid cooling device as described in the first aspect, as follows:

[0018] Rotating the handle drives the second bevel gear to rotate. Through the first bevel gear meshing with the second bevel gear, the rotational motion around the horizontal axis is converted into rotational motion around the vertical axis, thereby driving the bidirectional screw to rotate. When the bidirectional screw rotates, since the two ends of the bidirectional screw are fixed on the two first connecting rings respectively and cannot move axially, it will force the two sliding sleeves that are threaded with it to generate synchronous opposite linear motion along the outside of the infusion tube, causing the fixing components on them to gradually approach the docking position of the first connecting ring and the second connecting ring, preparing for the subsequent insertion of the insertion rod into the first and second through holes.

[0019] Rotating the rotating bolt drives the one-way screw to rotate, forcing the moving sleeve to move along the second guide rod. This, in turn, pushes the lifting block to rise and fall vertically within the lifting groove via the connecting rod on the hinge seat, thereby lifting the insertion rod at the end of the fixed rod away from the front of the first through-hole. The synchronous rise of the insertion rod can be controlled by rotating the bolt, making room for the docking of the connecting tube and the infusion tube. After docking, the bolt is rotated in reverse so that the insertion rod is aligned with the first through-hole. Then, by rotating the handle again, the sliding sleeve is driven to push the insertion rod through the first and second through-holes.

[0020] When the insert rod is inserted into the first and second through holes and continues to advance, the front end of the insert rod will push the annular moving plate to move axially. The second rack on the annular moving plate will then drive the spur gear to rotate, thereby driving the first rack meshing with the spur gear and the annular plate connected to it to move outward in the annular storage groove. The annular sealing strip extends out from the annular storage groove and performs active compression sealing on the connection interface between the connecting tube and the infusion tube, converting the axial linear motion during the locking process into the radial ejection motion of the annular sealing strip.

[0021] During disassembly, the insert rod will gradually move out from the second through hole and the first through hole. At the same time, the push rod on one side of the sliding sleeve will push the annular moving plate to reset, so that the annular sealing strip will automatically retract to avoid interference.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] The device of this invention allows operators to drive the sliding sleeves on both sides to move in opposite directions simultaneously by rotating a single handle. This simplifies the complex multi-point fastening process into a centralized operation, greatly improving installation and maintenance efficiency in the confined space of a data center. The horizontal movement of the sliding sleeves is converted into the vertical insertion of the insertion rods through the hinged rod system in the fixing assembly, ensuring that all insertion rods pass through the corresponding through holes on the first and second connecting rings accurately and synchronously, completing the tightening and locking between the infusion tube and the connecting tube. The structure is simpler and more compact, with a significant reduction in the number of parts. This not only reduces processing and assembly errors but also, through the forced synchronous drive of a single bidirectional screw, fundamentally ensures the high uniformity of force on all connection points, completely avoiding the risk of leakage caused by inadequate single-point fastening. This lays a more reliable mechanical foundation for the sealing effect. When the connecting assembly is locked, the linear movement of the sliding sleeve pushes the annular moving plate through the push rod, and with the help of the transmission mechanism composed of the second rack, spur gear, and first rack, the external mechanical thrust is accurately converted into radial extrusion force on the internal annular sealing strip. This design achieves precise synchronization between mechanical connection and sealing effectiveness. As the insert is fully inserted and the physical connection is in place, the annular sealing strip is also pressed tightly at the connection gap, achieving the best sealing state and forming a reliable dynamic sealing defense line. This effectively eliminates the problem of micro-gap leakage caused by processing errors and long-term vibration, and significantly improves the sealing reliability and system safety of the entire liquid cooling circuit under high pressure and long-term operation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of a preferred structure of the device of the present invention;

[0025] Figure 2This is a schematic diagram of the structure of the heat exchange component body and the connecting part (including connecting pipe, control valve, liquid delivery pipe, connecting assembly, and leak-proof assembly) of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the connecting part of the present invention;

[0027] Figure 4 This is a schematic diagram of the connection part of the present invention from another perspective;

[0028] Figure 5 This is an exploded view of the structure of the connecting component of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the first bevel gear, the first guide rod, and the positioning disk of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the second connecting ring and the second through-hole of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the movable sleeve of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the second guide rod and the top rod of the present invention;

[0033] Figure 10 This is a schematic diagram showing the location of the leak-proof component of the present invention;

[0034] Figure 11 This is a cross-sectional view of the leak-proof component of the present invention.

[0035] In the diagram: 1. Heat exchanger body; 2. Connecting pipe; 3. Control valve; 4. Infusion pipe; 5. Connecting assembly; 501. Support frame; 502. Bidirectional screw; 503. First connecting ring; 504. Sliding sleeve; 505. First bevel gear; 506. Second bevel gear; 507. Handle; 508. First guide rod; 509. Second connecting ring; 510. First through-hole; 511. Second through-hole; 512. Moving sleeve; 513. One-way screw; 514. Second guide rod; 515. Rotary screw. 516. Rotating bolt; 517. Support rod; 518. Hinge seat; 519. Connecting rod; 520. Lifting groove; 521. Lifting block; 522. Fixing rod; 523. Insert rod; 6. Leak-proof assembly; 601. Annular storage groove; 602. Annular plate; 603. Annular sealing strip; 604. First rack; 605. Rotating port; 606. Spur gear; 607. Annular moving plate; 608. Second rack; 609. Top rod; 610. Stop block; 7. Positioning plate; 8. Positioning port; 9. Positioning bolt. Detailed Implementation

[0036] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Technical features in various embodiments of the present invention can be combined accordingly without mutual conflict.

[0037] In the description of this invention, it should be understood that when an element is considered to be "connected" to another element, it can be a direct connection to the other element or an indirect connection, i.e., there is an intermediate element. Conversely, when an element is said to be "directly" connected to another element, there is no intermediate element.

[0038] In the description of this invention, it should be understood that the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0039] In this invention, for ease of description, the direction adjacent to control valve 3 is referred to as "inner side," and the direction away from control valve 3 is referred to as "outer side." Unless otherwise specified, the positional relationships in this invention are described in this manner.

[0040] like Figure 1 As shown, this invention provides a brazed aluminum plate-fin heat exchanger for a data center liquid cooling device. The device mainly comprises multiple heat exchange component bodies 1 arranged in rows, with each heat exchange component body 1 having several identical (e.g., ...) terminals connected to opposite sides on both sides. Figure 1 The four connecting pipes 2 shown in the diagram are arranged in the same position on each side. One end of each connecting pipe 2 is connected to the outside, and the other end is connected to a channel inside the heat exchange component body 1. Two connecting pipes 2 located in the same position on two adjacent heat exchange component bodies 1 are connected to the inlet and outlet of the control valve 3 respectively through the infusion pipe 4.

[0041] It should be noted that the connecting pipes 2 on one side of the heat exchanger body 1 at both ends are used to connect with the adjacent heat exchanger body 1; the connecting pipes 2 on the other side are used to connect with the main supply and return liquid pipelines of the data center liquid cooling system, thereby realizing the complete circulation of the heat dissipation system. In other words, several (e.g., ...) are provided between each pair of adjacent heat exchanger bodies 1. Figure 1 The four control valves 3 shown in the diagram are connected to two ends of a liquid infusion pipe 4, and each liquid infusion pipe 4 is connected to the heat exchange component body 1 via a connecting pipe 2. Figure 2 As shown, each control valve 3 is externally equipped with a connecting assembly 5 for fixing the connecting pipe 2 and the infusion pipe 4. One infusion pipe 4 and one connecting pipe 2 located at one end of the control valve 3 form a group, and a leak-proof assembly 6 for sealing is installed at the joint of each group of infusion pipe 4 and connecting pipe 2, wherein the leak-proof assembly 6 is located on one side of the infusion pipe 4.

[0042] In a preferred embodiment of the present invention, the two infusion pipes 4 and the two connecting pipes 2 located on both sides of the same control valve 3 are collinear in their axial direction (i.e., in the direction of pipe length), while the two infusion pipes 4 and the two connecting pipes 2 located on both sides of different control valves 3 are parallel in their axial direction.

[0043] Among the aforementioned institutions, such as Figure 3 and 4 As shown, a quick and rigid connection of the fluid channels between adjacent heat exchanger bodies is achieved through the connecting assembly. The connecting assembly 5 firmly fixes the liquid delivery pipes 4 at both ends of the control valve 3 to the connecting pipes 2 on the heat exchanger body 1. The structure is simple, and multi-point synchronous locking can be achieved by rotating a single component, which greatly simplifies the operation steps, improves the installation and maintenance efficiency in the narrow space of the data center, and ensures the rigidity of the connection and the uniformity of the sealing surface compression. At the same time, the leak-proof assembly 6 is specifically designed for the splicing gap between the liquid delivery pipe 4 and the connecting pipe 2. When the two are connected, the internal components of the leak-proof assembly 6 actively compress radially, forming a reliable sealing barrier at the splicing interface. This can actively and effectively prevent coolant leakage at critical connection interfaces, significantly improving the sealing reliability and safety of the entire liquid cooling circuit and avoiding the risk of data center equipment failure due to coolant leakage.

[0044] It is worth noting that the heat exchange component body 1 is a prior art technology, including alternating stacked baffles, fins and seals, which are combined into a robust monolithic structure through vacuum brazing. Its working principle is that the cold and hot fluids flow separately in adjacent flow channels separated by fins, without mixing. Heat is transferred through aluminum baffles with excellent conductivity. At the same time, the complex fin structure in the flow channel greatly expands the heat transfer area and promotes fluid turbulence, thereby achieving efficient heat exchange between cold and hot fluids in a compact space. The control valve 3 is a fluid control element. Its working principle is to precisely control the rotation or lifting movement of the valve core inside the valve body through an external drive mechanism, thereby changing the cross-sectional area or on / off state of the fluid channel, realizing the flow rate regulation, flow direction switching or on / off control of the cooling liquid flowing through the control valve 3, so as to meet the management and energy efficiency optimization requirements of different heat exchange loops of the data center liquid cooling system. It will not be elaborated here.

[0045] In theory, the structure of the connecting component 5 and the leak-proof component 6 is not limited, as long as they can achieve the functions described above. As a preferred embodiment of the above-mentioned device, the connecting assembly 5 may include a support frame 501, a bidirectional screw 502, a first connecting ring 503, a sliding sleeve 504, a first bevel gear 505, a second bevel gear 506, a handle 507, a first guide rod 508, a second connecting ring 509, a first through-hole 510, a second through-hole 511, a movable sleeve 512, a unidirectional screw 513, a second guide rod 514, a rotating bolt 515, a support rod 516, a hinge seat 517, a connecting rod 518, a lifting groove 519, a lifting block 520, a fixing rod 521, and an insert rod 522; the leak-proof assembly 6 may include an annular storage groove 601, an annular plate 602, an annular sealing strip 603, a first rack 604, a rotating port 605, a spur gear 606, an annular moving plate 607, a second rack 608, a top rod 609, and a stop block 610.

[0046] The preferred implementations of each mechanism will now be described in detail with reference to the accompanying drawings and through embodiments.

[0047] As a preferred embodiment of the present invention, such as Figure 1-5 As shown, the connecting assembly 5 mainly includes a support frame 501, which is fixed to one side of the control valve 3. A bidirectional screw 502 is rotatably mounted on the support frame 501 along its axial direction (length direction, horizontal in the figure). First connecting rings 503 are fixedly connected to the outer ends (and the side away from the control valve 3) of both infusion tubes 4. The two ends of the bidirectional screw 502 are respectively fixedly connected to the two first connecting rings 503. Sliding sleeves 504 are slidably fitted onto the outside of both infusion tubes 4. The bidirectional screw 502 passes through both sliding sleeves 504, and the two sliding sleeves 504 and the bidirectional screw 502 are externally threaded.

[0048] In actual use, when an external force drives the bidirectional screw 502 to rotate, since the two ends of the bidirectional screw 502 are fixed on the two first connecting rings 503 respectively and cannot move axially, it will force the two sliding sleeves 504 that are threaded to it to produce synchronous opposite or backward linear motion along the outside of the infusion tube 4. The support frame 501 provides stable support, and the rotational motion of the single bidirectional screw 502 transforms the complex multi-point fastening into synchronous linear drive of the two sliding sleeves 504, providing a power basis for the subsequent locking action, greatly simplifying the transmission structure, and laying a solid foundation for achieving rapid assembly and disassembly.

[0049] As a preferred embodiment of the present invention, such as Figure 5-6As shown, a first bevel gear 505 is fixedly sleeved at the middle of the outer side of the bidirectional screw 502, and the first bevel gear 505 can rotate along the axial direction of the bidirectional screw 502. A second bevel gear 506 is rotatably connected to the middle of the inner wall of the support frame 501, and the second bevel gear 506 can rotate in a direction perpendicular to the axial direction of the bidirectional screw 502. The first bevel gear 505 and the second bevel gear 506 mesh with each other. A handle 507 is rotatably connected to the outer side of the support frame 501 (i.e., facing the operator), the output end of the handle 507 passes through the support frame 501, and the output end of the handle 507 is fixedly connected to the center of the second bevel gear 506.

[0050] In actual use, when the operator rotates the handle 507, the output end of the handle 507 drives the second bevel gear 506 to rotate. Through the first bevel gear 505 meshing with the second bevel gear 506, the rotational motion around the horizontal axis is converted into rotational motion around the vertical axis, thereby efficiently driving the bidirectional screw 502 to rotate. Through the 90-degree reversing transmission mechanism formed by the first bevel gear 505 and the second bevel gear 506, the operating position is cleverly guided to the side of the support frame 501, which greatly optimizes the operating space and makes it easy to apply force in narrow positions, while maintaining the simplicity and efficiency of the core transmission structure.

[0051] As a preferred embodiment of the present invention, such as Figure 5-9 As shown, a first guide rod 508 is also fixedly connected between the two first connecting rings 503. A second connecting ring 509 is fixedly connected to the outer end of the connecting tube 2 adjacent to the infusion tube 4, and the first connecting ring 503 is provided with n A first through-hole 510 arranged in a ring array, and a second connecting ring 509 having... n The first and second through-holes 510 are arranged in a ring array, and the number of the first and second through-holes 510 is the same, with their opening positions corresponding one-to-one. Both sliding sleeves 504 are externally mounted with fixing components, and the two fixing components are symmetrically arranged. The fixing components can be embedded in each pair of first and second through-holes 510 and 511 to securely connect the infusion tube 4 and the connecting tube 2.

[0052] In practical use, the first guide rod 508 plays a crucial role in stabilizing and guiding between the two first connecting rings 503, ensuring the structural rigidity of the entire connecting frame. The first through-hole 510 and the second through-hole 511 of the annular array provide a precise alignment channel for the locking components on the subsequent fixing components. Through the synergistic effect of the first guide rod 508 and the symmetrically arranged first connecting rings 503 and second connecting rings 509, a stable and precisely aligned connecting platform is constructed, enabling the fixing components on the two sliding sleeves 504 to synchronously and accurately transmit the force to the docking interface, laying a solid foundation for achieving a fast and reliable connection.

[0053] As a preferred embodiment of the present invention, such as Figure 5-9 As shown, the fixing assembly mainly includes a movable sleeve 512, which is slidably fitted onto the outside of a sliding sleeve 504. An axially arranged one-way screw 513 is rotatably connected to the outside of the sliding sleeve 504. The one-way screw 513 passes through the movable sleeve 512, and the movable sleeve 512 and the one-way screw 513 are externally threaded together. A second guide rod 514 is axially fixedly connected to the outside of the sliding sleeve 504, and the movable sleeve 512 is slidably fitted onto the outside of the second guide rod 514. A rotating bolt 515 is rotatably connected to the side of the sliding sleeve 504 closest to the control valve 3. The output end of the rotating bolt 515 passes through the sliding sleeve 504, and the output end of the rotating bolt 515 is fixedly connected to one end of the one-way screw 513. A fixed connection is made to the outer side of the movable sleeve 512 (i.e., the side furthest from the control valve 3). n A ring array of support rods 516 is arranged, with each support rod 516 corresponding to the position of each set of first through-holes 510 and second through-holes 511. A lifting groove 519 is formed radially on each support rod 516 (i.e., in the direction perpendicular to the axial direction of the one-way screw 513). A lifting block 520 is slidably connected within the lifting groove 519. The lifting block 520 is hinged to one end of a connecting rod 518, and the other end of the connecting rod 518 is hinged to a hinge seat 517, which is fixed to the inner side of the movable sleeve 512. A fixing rod 521 is connected to the outer end of the lifting block 520, and an insertion rod 522, capable of being inserted into the first through-hole 510 and the second through-hole 511, is connected to the end of the fixing rod 521.

[0054] In actual use, rotating the rotating bolt 515 drives the one-way screw 513 to rotate, forcing the moving sleeve 512 to move along the second guide rod 514. Then, through the connecting rod 518 on the hinge seat 517, the lifting block 520 is pushed vertically up and down in the lifting groove 519, thereby driving the insertion rod 522 at the end of the fixed rod 521 to be raised or lowered in front of the first through-hole 510. The synchronous rise of the insertion rod 522 can be controlled by rotating the bolt 515, making room for the docking of the connecting tube 2 and the infusion tube 4. After docking, the bolt 515 is rotated in reverse so that the insertion rod 522 is aligned with the first through-hole 510. This prepares for the subsequent pushing of the insertion rod 522 through the sliding sleeve 504 to pass through the first through-hole 510 and the second through-hole 511, and for the use of the insertion rod 522 to trigger the anti-leakage component 6 to squeeze and seal the connection gap. This realizes the separation of docking guidance and locking functions, making the operation process clearer and more reliable.

[0055] As a preferred embodiment of the present invention, such as Figure 10-11As shown, the leak-proof component 6 mainly includes an annular storage tank 601, which is located outside the infusion tube 4 and near one end of the connecting tube 2. An annular plate 602 is slidably connected inside the annular storage tank 601. An annular sealing strip 603 is fixedly connected to the side of the annular plate 602 near the connecting tube 2. The annular sealing strip 603 can completely seal the annular storage tank 601 at its location and can slide within the annular storage tank 601. A... m A first rack 604 is arranged in a ring array, and the first rack 604 is arranged axially. The inner wall of the annular storage tank 601 is provided with m Each rotating port 605 extends to the outside and communicates with the outside. A spur gear 606 is rotatably connected to the inner wall of each rotating port 605, and each spur gear 606 meshes with a first rack 604. An annular moving plate 607 is slidably fitted onto the outside of the infusion tube 4 adjacent to the second connecting ring 509. The inner side of the annular moving plate 607 is fixedly connected to a gear that meshes with each spur gear 606. m A second rack 608. Multiple push rods 609 arranged in a ring array are fixedly connected to the outside of the sliding sleeve 504. The push rods 609 are used to push the annular moving plate 607 to reset from the opposite direction. Multiple stops 610 arranged in a ring array are fixedly connected to the outside of the infusion tube 4. Each stop 610 corresponds to one of the multiple rotating ports 605, and the stops 610 are used to limit the movement of the second rack 608.

[0056] In practical use, when the insertion rod 522 is inserted into the first through-hole 510 and the second through-hole 511 and continues to advance, the front end of the insertion rod 522 pushes the annular moving plate 607 to move axially. The second rack 608 on the annular moving plate 607 then drives the spur gear 606 to rotate, thereby causing the first rack 604 meshing with the spur gear 606 and its connected annular plate 602 to move outward in the annular storage groove 601. The annular sealing strip 603 extends out of the annular storage groove 601 and performs active compression sealing on the connection interface between the connecting pipe 2 and the infusion pipe 4. The axial linear motion during the locking process is reliably converted into the radial ejection motion of the annular sealing strip 603, realizing precise synchronization and linkage between the mechanical connection and the sealing action, and significantly improving the sealing reliability of the connection. During disassembly, the insertion rod 522 will gradually move out of the second through-hole 511 and the first through-hole 510. At the same time, the push rod 609 on one side of the sliding sleeve 504 will push the annular moving plate 607 to reset, causing the annular sealing strip 603 to automatically retract, avoiding interference. The stop block 610 is used to limit the second rack 608, so that the second rack 608 is always meshed with the spur gear 606.

[0057] As a preferred embodiment of the present invention, such as Figure 6 and 10As shown, a positioning disc 7 is fixed to the outside of the grip 507, and the positioning disc 7 has multiple positioning holes 8 arranged in a circular array. The positioning bolts 9 can be screwed into the support frame 501 through the positioning holes 8 to prevent the grip 507 from rotating.

[0058] In actual use, after the handle 507 is rotated to the required position, the operator can screw the positioning bolt 9 into the support frame 501, so that its end is inserted into the corresponding positioning port 8 on the positioning plate 7. The simple pin mechanism formed by the positioning plate 7 and the positioning bolt 9 provides a reliable mechanical locking position for the handle 507, which can effectively prevent it from rotating due to vibration or accidental contact, thereby ensuring the long-term maintenance of the locked state of the entire connection assembly 5 and its safe operation.

[0059] Utilizing the aforementioned brazed aluminum plate-fin heat exchanger for data center liquid cooling devices, this invention also provides a fixed sealing method, which is detailed below:

[0060] Connecting pipes 2 at the same opening position on two adjacent heat exchanger body 1 are respectively spliced ​​with infusion pipes 4. After ensuring that the two infusion pipes 4 and the two connecting pipes 2 located on both sides of the same control valve 3 are axially collinear, the handle 507 is rotated to drive the second bevel gear 506 to rotate. Through the first bevel gear 505 meshing with the second bevel gear 506, the rotational motion around the horizontal axis is converted into rotational motion around the vertical axis, thereby driving the bidirectional screw 502 to rotate. When the bidirectional screw 502 rotates, since the two ends of the bidirectional screw 502 are respectively fixed on the two first connecting rings 503 and cannot move axially, it will force the two sliding sleeves 504 that are threaded with it to generate synchronous opposite linear motion along the outside of the infusion pipe 4, driving the fixed components on them to gradually approach the docking position of the first connecting ring 503 and the second connecting ring 509, preparing for the subsequent insertion of the insertion rod 522 into the first through hole 510 and the second through hole 511. Multi-point synchronous drive is achieved through the operation of a single handle 507, simplifying the operation steps and improving the installation efficiency.

[0061] Rotating the rotating bolt 515 drives the one-way screw 513 to rotate, forcing the moving sleeve 512 to move along the second guide rod 514. This, in turn, pushes the lifting block 520 to rise and fall vertically in the lifting groove 519 via the connecting rod 518 on the hinge seat 517, thereby causing the insertion rod 522 at the end of the fixed rod 521 to be lifted away from the front of the first through-hole 510. Rotating the bolt 515 controls the synchronous rise of the insertion rod 522, making room for the docking of the connecting tube 2 and the infusion tube 4. After docking, the bolt 515 is rotated in reverse so that the insertion rod 522 is aligned with the first through-hole 510. Then, by rotating the handle 507 again, the sliding sleeve 504 is driven to push the insertion rod 522 through the first through-hole 510 and the second through-hole 511. At this time, the insertion rod 522 firmly connects the first connecting ring 503 and the second connecting ring 509 by passing through the two through-holes, thereby achieving rigid fixation of the infusion tube 4 and the connecting tube 2. Multi-point synchronous locking is achieved by using a single driving component of the connecting assembly.

[0062] When the insertion rod 522 is inserted into the first through-hole 510 and the second through-hole 511 and continues to advance, the front end of the insertion rod 522 will push the annular moving plate 607 to move axially. The second rack 608 on the annular moving plate 607 will then drive the spur gear 606 to rotate, thereby driving the first rack 604 meshing with the spur gear 606 and the annular plate 602 connected to it to move outward in the annular storage tank 601. The annular sealing strip 603 extends out from the annular storage tank 601 and performs active compression sealing on the connection interface between the connecting pipe 2 and the infusion pipe 4. The axial linear motion during the locking process is converted into the radial ejection motion of the annular sealing strip 603, forming a reliable sealing barrier. The axial linear motion during the locking process is converted into the radial ejection motion of the sealing element, achieving the effect of synchronous mechanical connection and sealing action. This actively and effectively prevents coolant leakage and improves the sealing reliability and safety of the liquid cooling circuit operation.

[0063] During disassembly, the insert 522 will gradually move out from the second through-hole 511 and the first through-hole 510. At the same time, the push rod 609 on one side of the sliding sleeve 504 will push the annular moving plate 607 to reset, so that the annular sealing strip 603 will automatically retract to avoid interference.

[0064] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all technical solutions obtained through equivalent substitution or transformation fall within the protection scope of the present invention.

Claims

1. A brazed aluminum plate-fin heat exchanger for a data center liquid cooling system, comprising several heat exchange component bodies (1), characterized in that, Each heat exchange component body (1) has several identical connecting pipes (2) connected to its opposite sides, and the opening positions of each connecting pipe (2) on each side are the same; two connecting pipes (2) located at the same opening position on two adjacent heat exchange component bodies (1) are connected to the inlet and outlet of the control valve (3) respectively through the infusion pipe (4); each control valve (3) is equipped with a connecting assembly (5) for fixing the connecting pipe (2) and the infusion pipe (4), and a leak-proof assembly (6) for sealing is installed at the splice of each set of infusion pipe (4) and connecting pipe (2); The connecting assembly (5) includes a support frame (501) fixed to one side of the control valve (3); a bidirectional screw (502) is rotatably connected to the support frame (501) along the axial direction, and the two ends of the bidirectional screw (502) are respectively connected to the first connecting rings (503) located at the outer ends of the two infusion tubes (4), and a first guide rod (508) is also fixedly connected between the two first connecting rings (503); the two infusion tubes (4) are slidably fitted with sliding sleeves (504) that are threadedly connected to the outside of the bidirectional screw (502), and by rotating the bidirectional screw (502), the two sliding sleeves (504) can generate synchronous opposite or opposite linear motion along the outside of the infusion tubes (4); a second connecting ring (509) is fixedly connected to the outer end of the connecting tube (2) adjacent to the infusion tube (4), and the first connecting ring (503) and the second connecting ring (509) are respectively provided with n A first through-hole (510) and a second through-hole (511) are arranged in a ring array and their opening positions correspond one to one; both sliding sleeves (504) are equipped with fixing components that can be embedded in each pair of first through-holes (510) and second through-holes (511) for fixing the infusion tube (4) and the connecting tube (2). The fixing assembly includes a movable sleeve (512) slidably sleeved outside the sliding sleeve (504); an axially arranged one-way screw (513) is rotatably connected to the outside of the sliding sleeve (504), and the one-way screw (513) is threadedly connected to the outside of the movable sleeve (512); a second guide rod (514) is axially fixedly connected to the outside of the sliding sleeve (504), and the movable sleeve (512) is slidably sleeved outside the second guide rod (514); the outer side of the movable sleeve (512) is fixedly connected to... n A ring array of support rods (516) is provided, with each support rod (516) corresponding to the position of each group of first through-holes (510) and second through-holes (511). A lifting groove (519) is radially formed on each support rod (516), and a lifting block (520) is slidably connected within the lifting groove (519). One end of the lifting block (520) is hinged to a connecting rod (518), and the other end of the connecting rod (518) is hinged to a hinge seat (517). The hinge seat (517) is fixed to the inner side of the outer side of the movable sleeve (512). The lifting block (520)... The outer end is connected to a fixed rod (521), and the end of the fixed rod (521) is connected to a plug rod (522) that can be inserted into the first through hole (510) and the second through hole (511). By rotating the one-way screw (513), the movable sleeve (512) can slide axially along the second guide rod (514), and then push the lifting block (520) to rise and fall vertically in the lifting groove (519) through the connecting rod (518) on the hinge seat (517), thereby driving the plug rod (522) at the end of the fixed rod (521) to be lifted away or lowered to the front of the first through hole (510).

2. The brazed aluminum plate-fin heat exchanger for a data center liquid cooling device according to claim 1, characterized in that, The two infusion pipes (4) and two connecting pipes (2) located on both sides of the same control valve (3) are axially collinear.

3. The brazed aluminum plate-fin heat exchanger for a data center liquid cooling device according to claim 1, characterized in that, The bidirectional screw (502) is fixedly fitted with a first bevel gear (505) that can rotate axially. A second bevel gear (506) that can rotate perpendicular to the axial direction of the bidirectional screw (502) is rotatably connected to the support frame (501). The first bevel gear (505) and the second bevel gear (506) mesh with each other. A handle (507) is rotatably connected to the outside of the support frame (501). The output end of the handle (507) passes through the support frame (501) and is fixedly connected to the center of the second bevel gear (506). By rotating the handle (507), the second bevel gear (506) is driven to rotate. The meshing transmission causes the first bevel gear (505) and the bidirectional screw (502) to rotate around the axis.

4. The brazed aluminum plate-fin heat exchanger for a data center liquid cooling device according to claim 3, characterized in that, The grip (507) is fixed with a positioning plate (7) on the outside. The positioning plate (7) has several positioning holes (8) arranged in a ring array. The positioning bolt (9) can be screwed into the support frame (501) through the positioning hole (8) to prevent the grip (507) from rotating.

5. A brazed aluminum plate-fin heat exchanger for a data center liquid cooling device according to claim 1, characterized in that, The sliding sleeve (504) is rotatably connected to a rotating bolt (515) on the side near the control valve (3). The output end of the rotating bolt (515) passes through the sliding sleeve (504) and is fixedly connected to one end of the one-way screw (513). The one-way screw (513) can be rotated by rotating the rotating bolt (515).

6. A brazed aluminum plate-fin heat exchanger for a data center liquid cooling device according to claim 1, characterized in that, The leak-proof component (6) includes an annular storage tank (601), which is located outside the infusion tube (4) and near one end of the connecting tube (2); an annular plate (602) is slidably connected inside the annular storage tank (601), and an annular sealing strip (603) is fixedly connected to one side of the annular plate (602) near the connecting tube (2), which can completely seal the annular storage tank (601) at its location; and a fixedly connected component is located on the other side of the annular plate (602). m A first rack (604) is arranged in a ring array, the first rack (604) is arranged axially, and the inner wall of the annular storage groove (601) is provided with m Each rotating port (605) is connected to the outside, and each rotating port (605) is rotatably connected to a spur gear (606) that meshes with the first rack (604); an annular moving plate (607) is slidably sleeved on the outside of the infusion tube (4) adjacent to the second connecting ring (509), and the inner side of the annular moving plate (607) is fixedly connected to a gear that meshes with each spur gear (606). m A second rack (608); a plurality of push rods (609) arranged in a ring array are fixedly connected to the outside of the sliding sleeve (504), and the push rods (609) are used to push the ring moving plate (607) to reset from the opposite direction.

7. A brazed aluminum plate-fin heat exchanger for a data center liquid cooling device according to claim 6, characterized in that, Each of the said rotating ports (605) is provided with a stop (610) for limiting the second rack (608).

8. A method for fixing and sealing a brazed aluminum plate-fin heat exchanger for a data center liquid cooling device as described in claim 6, characterized in that, Specifically as follows: Rotating the handle (507) drives the second bevel gear (506) to rotate. Through the first bevel gear (505) meshing with the second bevel gear (506), the rotational motion around the horizontal axis is converted into rotational motion around the vertical axis, thereby driving the bidirectional screw (502) to rotate. When the bidirectional screw (502) rotates, since the two ends of the bidirectional screw (502) are fixed on the two first connecting rings (503) respectively and cannot move axially, the two sliding sleeves (504) that are threaded with it will be forced to generate synchronous opposite linear motion along the outside of the infusion tube (4), which will drive the fixing components on it to gradually approach the docking position of the first connecting ring (503) and the second connecting ring (509), preparing for the subsequent insertion of the rod (522) into the first through hole (510) and the second through hole (511). Rotating the rotating bolt (515) drives the one-way screw (513) to rotate, forcing the moving sleeve (512) to move along the second guide rod (514), and then pushing the lifting block (520) to rise vertically in the lifting groove (519) through the connecting rod (518) on the hinge seat (517), thereby driving the insertion rod (522) at the end of the fixed rod (521) to be lifted away from the front of the first through hole (510); by rotating the bolt (515), the synchronous rise of the insertion rod (522) can be controlled to make room for the docking of the connecting tube (2) and the infusion tube (4); after docking, the rotating bolt (515) is reversed so that the insertion rod (522) is aligned with the first through hole (510), and then by rotating the handle (507) again, the sliding sleeve (504) is driven to push the insertion rod (522) through the first through hole (510) and the second through hole (511). When the insert rod (522) is inserted into the first through hole (510) and the second through hole (511) and continues to advance, the front end of the insert rod (522) will push the annular moving plate (607) to move axially. The second rack (608) on the annular moving plate (607) will drive the spur gear (606) to rotate, thereby driving the first rack (604) meshing with the spur gear (606) and its connected annular plate (602) to move outward in the annular storage groove (601). The annular sealing strip (603) extends out from the annular storage groove (601) and performs active compression sealing on the connection interface of the connecting pipe (2) and the infusion pipe (4), converting the axial linear motion during the locking process into the radial ejection motion of the annular sealing strip (603). During disassembly, the insert (522) will gradually move out from the second through-hole (511) and the first through-hole (510), while the push rod (609) on one side of the sliding sleeve (504) will push the annular moving plate (607) to reset, so that the annular sealing strip (603) will automatically retract to avoid interference.

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