A novel finned structure for water-cooled plates

Abstract

This utility model discloses a novel fin structure for a water-cooled plate, relating to the field of heat dissipation fin technology. The utility model includes toothed fins, with connecting components fixedly connected to the inner cavities on both sides of the toothed fins. Water baffles are also fixedly connected to both sides of the toothed fins via the connecting components. The toothed fins of this utility model, by introducing a toothed or slotted structure on the fin surface, can effectively disrupt the boundary layer, enhance the turbulence of the fluid, and thus significantly improve heat transfer efficiency. Simultaneously, the toothed structure can increase the contact area between the fins and the base plate, improve the heat transfer path, and reduce thermal contact resistance, thereby improving overall heat dissipation performance. Furthermore, the toothed structure helps improve the uniformity of fluid distribution between the fins, avoiding uneven heat dissipation caused by localized flow dead zones or uneven flow. Moreover, the processing is done without mold extrusion friction, avoiding scratches and dents on the fin surface and ensuring surface flatness.

Description

Technical Field

[0001] This utility model belongs to the field of heat dissipation fin technology, and in particular relates to a novel fin structure for a water-cooled plate. Background Technology

[0002] Water-cooled plates are widely used in heat dissipation systems for electronic devices and industrial machinery due to their high heat dissipation efficiency. Among them, plate-fin structures, with their large heat exchange area, have become one of the core components of water-cooled plates. In existing technologies, the fins of plate-fin water-cooled plates are mostly manufactured using a stamping and interlocking process. This involves using a stamping die to process metal sheets into fin units of a specific shape, and then relying on mechanical interlocking to connect and fix the fins to each other and to the substrate. While this process can meet basic usage requirements in conventional scenarios, its technical shortcomings are becoming increasingly apparent as equipment power increases and application environments become more complex. Specifically, these shortcomings are as follows: Insufficient connection reliability: The connection between the fins and related components relies entirely on the mechanical interlocking structure formed by stamping. Under high temperature (such as thermal stress generated by long-term operation of equipment), high pressure (such as pressure fluctuations in the cooling system), or high vibration (such as the operating conditions of industrial machinery), the interlocking joint is prone to loosening or even falling off, which directly leads to a decrease in the heat dissipation performance of the water-cooled plate and may cause equipment failure in severe cases. The processing technology has significant limitations: To ensure the effectiveness of mechanical interlocking, the design and processing accuracy of the stamping die must be extremely high, and the dimensional tolerances of the interlocking parts of the fins must be strictly controlled. If there are deviations in the die design or errors occur during the processing, it is very easy to cause poor interlocking between fins or between fins and the substrate, resulting in gaps or misalignments, which in turn affects the flow path of the cooling medium and reduces the heat exchange efficiency. Material selection is limited: the stamping and interlocking process has specific requirements for the ductility and hardness of materials. The materials need to have a certain degree of ductility to adapt to the deformation during the stamping process, while ensuring a certain degree of hardness to maintain the stability of the interlocking structure. Therefore, some high-strength alloys (such as certain heat-resistant steels) or brittle materials (such as some ceramic matrix composites) cannot be used in fin preparation because they are difficult to meet the deformation requirements of the stamping process or are prone to breakage during the stamping process. This limits the applicability of water-cooled plates in high-temperature and high-strength application scenarios. The contradiction between production efficiency and cost is prominent: fin production requires multiple processes such as stamping, dimensional inspection, and snap-fit ​​assembly. Frequent equipment switching and parameter adjustments are required between processes, resulting in a long production cycle. Especially in mass production, the multi-process flow not only increases labor and equipment input, but also easily produces defective products due to process connection problems, significantly increasing production costs and making it difficult to meet the efficiency and cost requirements of large-scale applications. Fin performance is easily damaged: During the stamping process, the fin surface is easily damaged by the extrusion and friction of the die, resulting in scratches, dents and other damage, which increases the surface roughness. On the one hand, it increases the flow resistance of the cooling medium, and on the other hand, it reduces the heat transfer efficiency of the fin, affecting the overall heat dissipation effect. At the same time, surface damage will destroy the original surface protective layer of the material, making the fin more susceptible to corrosion under the action of the cooling medium, and shortening the service life of the water-cooled plate. High maintenance and repair difficulty: After the fins are formed into an integral structure by stamping and fastening, if a local fin is damaged (such as corrosion or deformation) or needs to be replaced, the original mechanical interlocking structure must be destroyed before it can be disassembled. During the disassembly process, it is easy to cause secondary damage to the surrounding intact fins. Moreover, when reassembling, the fastening accuracy must be ensured again, which makes the maintenance process complicated and time-consuming, significantly increasing the later maintenance cost and equipment downtime. In summary, existing stamped snap-fit ​​fin structures have significant shortcomings in terms of reliability, process adaptability, material compatibility, production economy, and maintenance convenience, making it difficult to meet the demands of current high-requirement heat dissipation scenarios. Therefore, there is an urgent need to propose a novel fin structure that can address these deficiencies. To this end, we present a novel water-cooled plate fin structure to solve the aforementioned problems. Utility Model Content

[0003] The purpose of this utility model is to provide a novel fin structure for water-cooled plates. Through the cooperation of toothed fins, connecting components and baffles, it solves the problem that the existing stamped snap-fit ​​fin structure has significant shortcomings in terms of reliability, process adaptability, material compatibility, production economy and maintenance convenience, and is difficult to meet the current high-requirement heat dissipation needs.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0005] This utility model discloses a novel fin structure for a water-cooled plate, comprising a toothed fin. Connecting components are fixedly connected to the inner cavities on both sides of the toothed fin. Water baffles are fixedly connected to both sides of the toothed fin via the connecting components. Each connecting component includes insertion holes, mounting holes, and connecting holes communicating with the insertion holes and mounting holes on both sides of the toothed fin. A lead screw is fixedly connected to the inner cavity of the connecting hole via a bearing seat. Pins are threaded to both ends of the lead screw. A driven bevel gear is fixedly connected to the surface of the lead screw. A driving bevel gear meshes with the surface of the driven bevel gear. A rotating shaft is fixedly connected to the surface of the driving bevel gear. The rotating shaft is fixedly connected to the inner cavity of the mounting hole via a bearing. A connecting post is inserted into the inner cavity of the insertion hole. A pin hole for engaging the pins is opened on the surface of the connecting post. One end of the connecting post is fixedly connected to the water baffle.

[0006] The present invention is further configured such that a sealing plate is fixedly connected to the bottom of the shovel-tooth fin and below the connecting assembly by bolts. The inner cavity of the sealing plate is also provided with insertion holes, mounting holes and connection holes. The sealing plate is fixed to the bottom of the shovel-tooth fin and below the connecting assembly by bolts. On the one hand, it can form a closed structure at the bottom of the shovel-tooth fin to prevent the cooling medium from leaking from the bottom. On the other hand, the insertion holes, mounting holes and connection holes in the inner cavity of the sealing plate can facilitate the disassembly and assembly of the connecting assembly.

[0007] The present invention is further configured such that a sealing ring is fitted at the connection between the sealing plate and the toothed fin. The elastic deformation of the sealing ring fills the tiny gap between the two connection surfaces, further enhancing the sealing performance and effectively preventing the cooling medium from seeping out from the connection gap. This ensures that the cooling medium flows along a preset path and avoids reducing heat dissipation efficiency due to medium leakage.

[0008] The present invention is further configured such that limit grooves are provided at both the upper and lower ends of the inner cavity of the connecting hole, and limit blocks are slidably connected to the inner cavity of the limit grooves. The other side of the limit blocks is fixedly connected to the pin. The sliding cooperation between the limit grooves and the limit blocks can constrain the movement direction of the pin, prevent the pin from rotating circumferentially with the lead screw, and ensure that the pin is always accurately inserted into or withdrawn from the pin hole in a straight line, thereby improving the accuracy and stability of the connection of the connecting components.

[0009] The present invention is further configured such that one end of the pin is provided with a threaded hole, the lead screw is threadedly connected to the threaded hole, and the threaded hole is threadedly connected to the lead screw, which can smoothly convert the rotational motion of the lead screw into the linear motion of the pin, ensuring that there is no jamming or loosening during the movement of the pin, realizing a stable fit between the pin and the pin hole, and avoiding loosening of the connection between the baffle plate and the shovel tooth fin.

[0010] The present invention is further configured such that the threads at both ends of the lead screw are designed in opposite directions. The reverse thread design allows the pins at both ends to move simultaneously toward or away from the center of the lead screw when the lead screw rotates, so as to realize that the pins are inserted into or withdrawn from the pin holes synchronously. There is no need to adjust the pins at both ends separately, which improves the efficiency of connection or disassembly, while ensuring that the pins at both ends move synchronously and avoids connection misalignment.

[0011] The present invention is further configured such that the surface of the baffle plate is provided with a circular hole for mounting the rotating shaft, and the surface of the rotating shaft is provided with a hexagonal groove. The circular hole provides mounting space for the rotating shaft, avoids interference between the rotating shaft and the baffle plate when the rotating shaft rotates, and ensures normal rotation of the rotating shaft. The hexagonal groove on the surface of the rotating shaft makes it convenient for operators to insert and rotate the rotating shaft using hexagonal tools.

[0012] The present invention has the following beneficial effects.

[0013] 1. The spade-tooth fins of this utility model effectively disrupt the boundary layer and enhance fluid turbulence by introducing a spade-tooth or slotted structure on the fin surface, thereby significantly improving heat transfer efficiency. Simultaneously, the spade-tooth structure increases the contact area between the fins and the base plate, improving the heat transfer path and reducing thermal contact resistance, thus enhancing overall heat dissipation performance. Furthermore, the spade-tooth structure helps improve the uniformity of fluid distribution between the fins, avoiding uneven heat dissipation caused by localized flow dead zones or uneven flow. The manufacturing process eliminates the need for mold extrusion and friction, preventing scratches and dents on the fin surface and ensuring surface smoothness. This reduces the flow resistance of the cooling medium, minimizes corrosion risk, and extends service life. During maintenance, simply rotating the shaft allows the pin to exit the pin hole, enabling non-destructive disassembly of the baffle plate, avoiding secondary damage to surrounding structures, simplifying the maintenance process, and reducing subsequent maintenance costs and equipment downtime.

[0014] 2. The toothed fins of this utility model are manufactured through an extrusion process, resulting in a more robust structure than stamped snap-fit ​​fins. They can withstand higher mechanical and thermal stresses and provide greater heat dissipation capacity in high-power-density equipment, meeting the high-efficiency heat dissipation requirements in compact spaces. Furthermore, in the connecting assembly, the lead screw is stably supported by a bearing seat, and the driving bevel gear drives the driven bevel gear to rotate the lead screw, ensuring precise insertion of the pins at both ends into the pin holes of the connecting column. This mitigates the risk of loosening under high temperature, high pressure, and vibration conditions. Moreover, this connection method eliminates the stringent requirements of stamping processes on material ductility and hardness, allowing the use of special materials such as high-strength alloys and ceramic matrix composites in fin preparation. This broadens the application range of materials, meets the heat dissipation requirements of high-temperature and high-strength scenarios, and solves the problem of poor compatibility of traditional structural materials. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0016] Figure 1 This is a three-dimensional view of a novel finned structure for a water-cooled plate.

[0017] Figure 2 This is an exploded schematic diagram of a novel finned structure for a water-cooled plate.

[0018] Figure 3 This is a top sectional view of the connecting components in a novel finned structure of a water-cooled plate.

[0019] Figure 4 This is a top view schematic diagram of the sealing plate in a novel finned structure of a water-cooled plate.

[0020] Figure 5 In a novel finned structure for a water-cooled plate Figure 4 Enlarged diagram of point A in the middle.

[0021] In the attached diagram: 1. Shovel-tooth fin; 2. Connecting assembly; 21. Insertion hole; 22. Mounting hole; 23. Connecting hole; 24. Lead screw; 25. Pin; 26. Driven bevel gear; 27. Driving bevel gear; 28. Rotating shaft; 29. ​​Connecting column; 210. Pin hole; 211. Sealing plate; 212. Limiting groove; 213. Limiting block; 3. Water baffle; 4. Round hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1 Please see Figure 1-5 This utility model is a novel fin structure for a water-cooled plate, including a toothed fin 1. Connecting components 2 are fixedly connected to the inner cavities on both sides of the toothed fin 1. Water baffles 3 are fixedly connected to both sides of the toothed fin 1 via the connecting components 2. The connecting components 2 include insertion holes 21 and mounting holes 22 on both sides of the toothed fin 1, and connecting holes 23 communicating with the insertion holes 21 and mounting holes 22. A lead screw 24 is fixedly connected to the inner cavity of the connecting hole 23 via a bearing seat. Pins 25 are threaded to both ends of the lead screw 24. A driven bevel gear 26 is fixedly connected to the surface of the lead screw 24. A driving bevel gear 27 meshes with the surface of the driven bevel gear 26. A rotating shaft 28 is fixedly connected to the surface of the driving bevel gear 27. The rotating shaft 28 is fixedly connected to the inner cavity of the mounting hole 22 via a bearing. A connecting post 29 is inserted into the inner cavity of the insertion hole 21. A pin hole 210 for use with the pin 25 is opened on the surface of the connecting post 29. One end of the connecting post 29 is fixedly connected to the water baffle 3.

[0024] Specifically: the inner ring of the bearing housing is fixedly connected to a lead screw 24 that can rotate around its own axis; the outer ring of the bearing is fixed to the inner wall of the mounting hole 22; the inner ring is fixed to the rotating shaft 28; the end of the connecting column 29 away from the insertion hole 21 is fixedly connected to the side wall of the baffle plate 3; the baffle plate 3 is used to constrain the flow path of the cooling medium and prevent medium leakage.

[0025] Example 2 Please see Figure 1-5Based on Embodiment 1, a sealing plate 211 is fixedly connected to the bottom of the shovel-tooth fin 1 and below the connecting assembly 2 by bolts. The inner cavity of the sealing plate 211 is also provided with an insertion hole 21, a mounting hole 22 and a connecting hole 23. A sealing ring is fitted at the connection between the sealing plate 211 and the shovel-tooth fin 1. Limiting grooves 212 are provided at both the upper and lower ends of the inner cavity of the connecting hole 23. Limiting blocks 213 are slidably connected to the inner cavity of the limiting grooves 212. The other side of the limiting blocks 213 is fixedly connected to the pin 25. A threaded hole is provided at one end of the pin 25. The screw 24 is threadedly connected to the threaded hole. The threads at both ends of the screw 24 are designed in opposite directions. A round hole 4 for the installation of the rotating shaft 28 is provided on the surface of the baffle plate 3. A hexagonal groove is provided on the surface of the rotating shaft 28.

[0026] Specifically: The sealing plate 211 is fixed to the bottom of the toothed fin 1 and located below the connecting assembly 2 by bolts. On the one hand, it forms a closed structure at the bottom of the toothed fin 1 to prevent the cooling medium from leaking from the bottom. On the other hand, the insertion hole 21, mounting hole 22 and connection hole 23 in the inner cavity of the sealing plate 211 facilitate the disassembly and assembly of the connecting assembly 2. The elastic deformation of the sealing ring fills the small gap between the two connecting surfaces, further enhancing the sealing performance and effectively preventing the cooling medium from seeping out from the connection gap. This ensures that the cooling medium flows along the preset path and avoids the reduction of heat dissipation efficiency due to medium leakage. The sliding fit of the limiting groove 212 and the limiting block 213 can constrain the movement direction of the pin 25, preventing the pin 25 from rotating circumferentially with the rotation of the lead screw 24. This ensures that the pin 25 always accurately inserts into or exits the pin hole 210 in a straight line, improving the accuracy of the connection of the connecting assembly 2. For stability and reliability, the threaded hole connects to the lead screw 24, smoothly converting the rotational motion of the lead screw 24 into the linear motion of the pin 25. This ensures that the pin 25 moves without jamming or loosening, achieving a stable fit between the pin 25 and the pin hole 210. This prevents loosening between the baffle plate 3 and the toothed fin 1. The reverse thread design allows the pins 25 at both ends to move simultaneously towards or away from the center of the lead screw 24 when it rotates, enabling the pins 25 to be inserted into or withdrawn from the pin hole 210 synchronously. This eliminates the need to adjust the pins 25 at both ends separately, improving connection and disassembly efficiency. It also ensures that the pins 25 at both ends move synchronously, preventing misalignment. The round hole 4 provides installation space for the rotating shaft 28, preventing interference between the rotating shaft 28 and the baffle plate 3 during rotation and ensuring normal rotation of the rotating shaft 28. The hexagonal groove on the surface of the rotating shaft 28 facilitates the use of hexagonal tools to insert and rotate the rotating shaft 28.

[0027] The working principle of this utility model is as follows: The connecting post 29 on the baffle plate 3 is inserted into the insertion holes 21 on both sides of the toothed fin 1. The operator inserts a tool into the hexagonal groove of the rotating shaft 28 and rotates the rotating shaft 28. The rotating shaft 28 drives the active bevel gear 27 to rotate, and the active bevel gear 27 drives the driven bevel gear 26 and the lead screw 24 to rotate. Because the two ends of the lead screw 24 have reverse threads, and the pin 25 slides with the limiting groove 212 through the limiting block 213, the rotation of the lead screw 24 drives the pins 25 at both ends to move synchronously in a straight line along the limiting groove 212 until the pins 25 are inserted into the pin holes 210 of the connecting post 29, thus fixing the baffle plate 3 and the toothed fin 1. When maintenance or replacement of parts is required, the rotating shaft 28 is rotated in the opposite direction, and the lead screw 24 rotates in the opposite direction, causing the pins 25 to exit the pin holes 210 synchronously, so that the baffle plate 3 can be removed without damaging the surrounding structure. If the sealing plate 211 is to be maintained, the bolts can be removed and it can be reinstalled and fixed after maintenance.

[0028] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A novel fin structure of water-cooled plate, comprising a gullet fin (1), characterized in that: Both sides of the shovel-tooth fin (1) are fixedly connected to the connecting components (2), and both sides of the shovel-tooth fin (1) are fixedly connected to the baffles (3) through the connecting components (2). The connecting assembly (2) includes an insertion hole (21) and a mounting hole (22) on both sides of the shovel tooth fin (1), and a connecting hole (23) that communicates with the insertion hole (21) and the mounting hole (22). The inner cavity of the connecting hole (23) is fixedly connected to a lead screw (24) through a bearing seat. Both ends of the lead screw (24) are threaded with pins (25). The surface of the lead screw (24) is fixedly connected to a driven bevel gear (26). The surface of the driven bevel gear (26) is meshed with a driving bevel gear (27). The surface of the driving bevel gear (27) is fixedly connected to a rotating shaft (28). The rotating shaft (28) is fixedly connected to the inner cavity of the mounting hole (22) through a bearing. A connecting post (29) is inserted into the inner cavity of the insertion hole (21). The surface of the connecting post (29) is provided with a pin hole (210) for use with the pin (25). One end of the connecting post (29) is fixedly connected to the baffle plate (3).

2. The novel fin structure of a water-cooled plate according to claim 1, characterized in that: The bottom of the spade fin (1) and below the connecting assembly (2) is fixedly connected to a sealing plate (211) by bolts. The inner cavity of the sealing plate (211) is also provided with an insertion hole (21), a mounting hole (22) and a connection hole (23).

3. The novel finned structure of a water-cooled plate according to claim 2, characterized in that: A sealing ring is fitted at the connection between the sealing plate (211) and the shovel tooth fin (1).

4. The novel fin structure of a water-cooled plate according to claim 1, characterized in that: Limiting grooves (212) are provided at both the upper and lower ends of the inner cavity of the connecting hole (23). A limiting block (213) is slidably connected to the inner cavity of the limiting groove (212). The other side of the limiting block (213) is fixedly connected to the pin (25).

5. The novel fin structure of a water-cooled plate according to claim 1, characterized in that: One end of the pin (25) is provided with a threaded hole, and the lead screw (24) is threadedly connected to the threaded hole.

6. The novel fin structure of a water-cooled plate according to claim 1, characterized in that: The threads at both ends of the lead screw (24) are designed in reverse.

7. The novel fin structure of water-cooled plate according to claim 1, characterized in that: The surface of the baffle plate (3) is provided with a round hole (4) for mounting the rotating shaft (28), and the surface of the rotating shaft (28) is provided with a hexagonal groove.

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