Assembling structure of 3D VC heat pipe and VC cover plate and radiator

Abstract

This utility model discloses an assembly structure and radiator for a 3DVC heat pipe and a VC cover plate. The assembly structure includes: a cover plate with a plurality of assembly holes arranged in an array, extending through both sides of the cover plate; several heat pipes, each with a flange at one end, corresponding to a mounting hole; the flanged end of the heat pipe is fitted into the mounting hole and fitted against one side of the cover plate; the flange and cover plate are fixedly connected by diffusion welding. This utility model, by providing assembly holes on the cover plate, a flange at one end of the heat pipe, and limiting the heat pipe's position by fitting it into the assembly hole and the flange against the cover plate, and forming a complete weld through diffusion welding, avoids the traditional production process of welding in a small space. This avoids problems such as incomplete welds and missing weld rings, improves welding quality, and allows for mass production, effectively increasing production efficiency and capacity.

Description

Technical Field

[0001] This utility model relates to the field of heat sink component assembly technology, and in particular to an assembly structure of a 3DVC heat pipe and a VC cover plate, and a heat sink. Background Technology

[0002] With the development of the electronics industry, electronic devices are becoming more and more powerful and smaller in size. The powerful functions lead to increased heat generation during operation. As a heat-conducting component, the three-dimensional heat spreader can meet the high-temperature heat dissipation requirements of electronic devices with its excellent thermal conductivity. At the same time, compared with traditional heat dissipation structures, it can dissipate more heat and has greater flexibility in terms of space and volume. It can be adjusted according to the structural configuration of electronic devices and has the characteristics of customization.

[0003] In existing technologies, 3DVC heat pipes and VC cover plates are combined by welding rings. Because 3DVC heat pipes have multiple bends and are closely arranged, the operating space during welding is narrow, which easily leads to the risk of incomplete welding or missing welding rings. This also makes it difficult to meet production quality standards and limits output.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] To address the issue that in the existing three-dimensional heat pipe production process, the 3DVC heat pipe and VC cover plate are assembled by welding rings, which results in a narrow operating space during welding due to the multiple bends and tight arrangement of the 3DVC heat pipe, easily leading to the risk of incomplete welding or missing welding rings, and thus causing difficulties in meeting production quality standards and limiting output, this utility model provides an assembly structure for the 3DVC heat pipe and VC cover plate, as well as a heat sink.

[0006] This utility model is achieved through the following technical solution:

[0007] An assembly structure for a 3DVC heat pipe and a VC cover plate, wherein the assembly structure for the 3DVC heat pipe and the VC cover plate includes:

[0008] A cover plate, wherein a plurality of mounting holes are arranged in an array on the cover plate, and the mounting holes are arranged through both sides of the cover plate;

[0009] A heat pipe, wherein a plurality of heat pipes are provided, and a flange is provided at one end of the heat pipe, the flange corresponding to the assembly hole;

[0010] One end of the heat pipe corresponding to the flange is fitted into the assembly hole, and the flange is fitted onto one side of the cover plate. The flange and the cover plate are fixedly connected by diffusion welding.

[0011] The assembly structure of the 3DVC heat pipe and VC cover plate includes a stepped hole on one side of the cover plate corresponding to the flange, and the stepped hole is concentric with the assembly hole.

[0012] The assembly structure of the 3DVC heat pipe and VC cover plate, wherein the diameter of the stepped hole is larger than the diameter of the assembly hole, and the diameter of the stepped hole is smaller than the diameter of the flange;

[0013] When the flange is fitted onto one side of the cover plate, the flange covers the stepped hole.

[0014] The assembly structure of the 3DVC heat pipe and the VC cover plate further includes a detachable graphite fixture, which is used to ensure that the flange and the cover plate fit tightly together.

[0015] The assembly structure of the 3DVC heat pipe and VC cover plate, wherein the graphite fixture includes:

[0016] A pressure block, used to support the heat pipe and the cover plate;

[0017] A pressure plate, which is adapted to the pressure block, is used to limit the position of the cover plate.

[0018] The assembly structure of the 3DVC heat pipe and VC cover plate, wherein the heat pipe includes a straight pipe and a bent pipe with several bends;

[0019] The pressure block is provided with a positioning groove, the shape of which is adapted to the shape of the cover plate;

[0020] The pressure block is provided with a plurality of first clearance grooves and a plurality of first clearance holes. The first clearance grooves are used to place the bent pipe; the first clearance holes are used to place the straight pipe.

[0021] The assembly structure of the 3DVC heat pipe and VC cover plate, wherein the graphite fixture further includes:

[0022] The support block is provided in multiple ways, and the support block is provided with a number of second clearance grooves and a number of second clearance holes. The second clearance grooves and the second clearance holes are used to support the bend and the bending part.

[0023] The assembly structure of the 3DVC heat pipe and VC cover plate includes a plurality of mounting posts on the pressure plate and a plurality of mounting grooves on the pressure block, wherein the mounting posts and the mounting grooves are detachably engaged.

[0024] The assembly structure of the 3DVC heat pipe and VC cover plate, wherein the flange and the heat pipe are integrally formed.

[0025] A heat sink, wherein the heat sink includes the assembly structure of the 3DVC heat pipe and VC cover plate described above.

[0026] The beneficial effects of this utility model are as follows: By setting an assembly hole on the cover plate and a flange at one end of the heat pipe, the heat pipe is fitted with the assembly hole and the flange is attached to the cover plate to limit the position. A complete weld is formed by diffusion welding, which avoids the production process of welding in a small space in the traditional production mode. This can avoid the problems of false welding and missing welding rings, improve welding quality, and enable mass production, effectively improving production efficiency and capacity. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the assembly structure of the 3DVC heat pipe and VC cover plate of this utility model;

[0028] Figure 2 This is a top view of the assembly structure of the 3DVC heat pipe and VC cover plate of this utility model;

[0029] Figure 3 This utility model relates to the assembly structure of the 3DVC heat pipe and VC cover plate. Figure 2 AA node cross-section view;

[0030] Figure 4 This utility model relates to the assembly structure of the 3DVC heat pipe and VC cover plate. Figure 3 Enlarged view of node B structure in the image;

[0031] Figure 5 This is an exploded view of the graphite fixture in the assembly structure of the 3DVC heat pipe and VC cover plate of this utility model.

[0032] Figure 6 This is a diagram of the graphite fixture assembly structure in the assembly structure of the 3DVC heat pipe and VC cover plate of this utility model.

[0033] exist Figures 1 to 6 In the middle: 100, cover plate; 110, assembly hole; 120, stepped hole; 200, heat pipe; 210, straight pipe; 220, bend; 221, bending section; 230, flange; 300, graphite fixture; 310, pressure block; 311, positioning groove; 312, first clearance groove; 313, first clearance hole; 314, mounting groove; 320, pressure plate; 330, support block; 331, second clearance groove; 332, second clearance hole. Detailed Implementation

[0034] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] In existing technologies, 3DVC heat pipes and VC cover plates are combined by welding rings. Because 3DVC heat pipes have multiple bends and are closely arranged, the operating space during welding is narrow, which easily leads to the risk of incomplete welding or missing welding rings. This also makes it difficult to meet production quality standards and limits output.

[0038] To address the aforementioned problems in the existing technology, this utility model provides an assembly structure for a 3D VC heat pipe and a VC cover plate, such as... Figure 1 As shown, the assembly structure of the 3DVC heat pipe and VC cover plate includes: a cover plate 100, on which a plurality of assembly holes 110 are arranged in an array, the assembly holes 110 penetrating both sides of the cover plate 100; a heat pipe 200, of which a plurality of heat pipes 200 are provided, one end of which is provided with a flange 230, the flange 230 corresponding to the assembly hole 110; one end of the heat pipe 200 corresponding to the flange 230 is sleeved in the assembly hole 110, and the flange 230 is fitted on one side of the cover plate 100, the flange 230 and the cover plate 100 are fixedly connected by diffusion welding.

[0039] This utility model provides an assembly hole 110 on the cover plate 100 and a flange 230 at one end of the heat pipe 200. The heat pipe 200 is fitted with the assembly hole 110 and the flange 230 is fitted with the cover plate 100 to limit the position. A complete weld is formed by diffusion welding, which avoids the production process of welding in a small space in the traditional production mode. It can avoid the problems of false welding and missing welding rings, improve welding quality, and enable mass production, effectively improving production efficiency and capacity.

[0040] In the above embodiments, such as Figure 1 As shown, the assembly structure of the 3DVC heat pipe and VC cover plate of this utility model mainly targets the connection part between the 3DVC heat pipe and the VC cover plate. Hereinafter, the 3DVC heat pipe is simply referred to as heat pipe 200, and the VC cover plate as cover plate 100. In this embodiment, a plurality of assembly holes 110 are arrayed on the cover plate 100. The assembly holes 110 are specifically located at the positions where the heat pipe 200 and the cover plate 100 need to be welded. The assembly holes 110 penetrate both sides of the cover plate 100. A flange 230 is pre-set at one end of the heat pipe 200. Preferably, the flange 230 is integrally formed with the heat pipe 200. During actual assembly, the production personnel can... The other end of the heat pipe 200 is fitted into the assembly hole 110, and the heat pipe 200 is moved so that the end with the flange 230 fits against the cover plate 100, so that the end of the heat pipe 200 to be welded corresponds to the cover plate 100. In specific implementation, several heat pipes 200 are provided and installed in several assembly holes 110 of the cover plate 100 according to actual use requirements. Then, the welding is carried out by diffusion welding. During the welding process, the weld at the overlap of the flange 230 and the cover plate 100 is more firm, more reliable, and has a longer service life. There is no false welding, which can improve air tightness. On the other hand, it can make the capillary overlap effect between the heat pipe 200 and the cover plate 100 better, improve the capillary effect, and make the VC performance more stable.

[0041] In this embodiment, diffusion welding involves pressing two workpieces together and heating them in a vacuum or protective atmosphere furnace. This causes microscopic plastic deformation at the tiny unevenness of the two welding surfaces, resulting in close contact. During subsequent heating and holding, atoms diffuse into each other to form a metallurgical bond. This type of diffusion welding is usually referred to as solid-phase diffusion.

[0042] Through the above embodiments, this utility model pre-designs the structure of the heat pipe 200 and the cover plate 100, and combines the flange 230 at the end of the heat pipe 200 with the assembly hole 110 on the cover plate 100, so that the heat pipe 200 and the cover plate 100 meet the welding requirements of diffusion welding, bypassing the problem of high space requirements in traditional welding, avoiding the risk of false welding and missing welding rings, and at the same time meeting the production steps that can be mass-produced, which can effectively improve production efficiency and capacity.

[0043] Furthermore, in one possible embodiment of this utility model, such as Figure 2 , Figure 3 and Figure 4 As shown, to further improve the welding effect between flange 230 and cover plate 100, in this embodiment, a stepped hole 120 is also provided on one side of cover plate 100 corresponding to flange 230. The stepped hole 120 and the assembly hole 110 are concentrically arranged, as shown. Figure 4 As shown, the stepped hole 120 and the assembly hole 110 form a stepped structure in the cross-section. In this way, the stepped hole 120 provides a clearance space for the transition between the flange 230 and the cover plate 100. During the diffusion welding process, under the action of high temperature and pressure, part of the material of the flange 230 is pressed into the space corresponding to the stepped hole 120, which can achieve a better welding effect. At the same time, the setting of this clearance space can release the stress during the welding process and avoid cracking.

[0044] Specifically, when the stepped hole 120 is actually installed, its diameter should be larger than that of the assembly hole 110, and its diameter should be smaller than that of the flange 230. In actual assembly, this means that when the flange 230 is fitted onto one side of the cover plate 100, the flange 230 covers the stepped hole 120. Figure 4 The structural state shown.

[0045] More specifically, taking an 8mm diameter heat pipe 200 as an example, the diameter of the mounting hole 110 should be 8.1mm to facilitate the installation and movement of the heat pipe 200. The diameter of the stepped hole 120 is 11mm, and the height of the stepped hole 120 is 0.2mm. Simultaneously, the flange 230 of the heat pipe 200 should have a single-sided dimension greater than or equal to 2.5mm to form a shape such as... Figure 4 The assembly state is shown.

[0046] Taking a heat pipe 200 with a diameter of 6mm as an example, the diameter of the corresponding mounting hole 110 should be 6.1mm, the diameter of the stepped hole 120 should be 8.4±0.05mm, and the height of the stepped hole 120 should be 0.2mm. At the same time, the single-sided dimension of the flange 230 of the heat pipe 200 should also be set to be greater than or equal to 2.5mm.

[0047] The above data represents the distance to a specific implementation. Those skilled in the art can adjust the above data according to actual usage needs, and this application does not limit this adjustment.

[0048] In another possible embodiment of this utility model, such as Figure 4As shown, during the diffusion welding process, it is necessary to ensure that the flange 230 and the cover plate 100 are tightly pressed together. To ensure welding quality, in this embodiment, the assembly structure of the 3DVC heat pipe and VC cover plate also includes a graphite jig 300. The graphite jig 300 can be detachably installed with the assembled heat pipe 200 and cover plate 100, thereby limiting the assembly position of the heat pipe 200 and the cover plate 100 and ensuring that the flange 230 of the heat pipe 200 and the cover plate 100 are tightly fitted, thus ensuring welding quality.

[0049] Specifically, such as Figure 5 As shown, the graphite fixture 300 mainly includes a pressure block 310 and a pressure plate 320. The pressure block 310 is used to support the heat pipe 200 and the cover plate 100, and to maintain the combined angle and shape of the heat pipe 200 and the cover plate 100. The pressure plate 320 is adapted to the pressure block 310 and can form a combination. The pressure plate 320 can limit the position of the cover plate 100, so that the flange 230 is tightly pressed against the position of the step hole 120 on the cover plate 100.

[0050] In practical applications, the three-dimensional vapor chamber has different heat pipe 200 structural designs depending on different usage requirements, for example in... Figure 1 In this embodiment, there are two different types of heat pipes 200. For ease of description, in the following embodiments, the heat pipe 200 is specifically divided into a straight pipe 210 and a bent pipe 220. The straight pipe 210 is a structure that is arranged entirely along a straight line, while the bent pipe 220 includes several bends 221, allowing it to be extended in all directions of the X, Y, and Z axes of the spatial coordinate system. Figure 1 When configuring for a specific embodiment, because Figure 1 The pressure block 310 includes a straight pipe 210 and a bent pipe 220. Therefore, a positioning groove 311 is first provided in the pressure block 310. The shape of the positioning groove 311 matches the shape of the cover plate 100. In actual use, the cover plate 100 is fitted into the positioning groove 311 to fix its position. Simultaneously, several first clearance grooves 312 and first clearance holes 313 are also provided inside the pressure block 310. The first clearance holes 313 are adapted to the diameter and length of the straight pipe 210 and are used to place the straight pipe 210. The first clearance grooves 312 correspond to the structural position of the bend 221 of the bent pipe 220 and are used to place the bent pipe 220. This allows the assembled heat pipe 200 and cover plate 100 to be placed on the pressure block 310 in the shape required for welding. In this state, as... Figure 5 As shown, flange 230 is located on the upper side of cover plate 100. Therefore, after covering pressure plate 320 on pressure block 310, the combination of pressure plate 320 and pressure block 310 can achieve the effect of pressing flange 230 and cover plate 100 together, ensuring welding quality.

[0051] Furthermore, such as Figure 5 As shown, in this embodiment, the graphite fixture 300 also includes a support block 330. Multiple support blocks 330 can be preset according to the design and arrangement of the heat pipe 200. Since the bent pipe 220 in the heat pipe 200 has a three-dimensional distribution structure, it is necessary to support the bent pipe 220 under the high temperature state of diffusion welding to prevent deformation or affect the center of gravity of the combined structure. Therefore, a number of second clearance grooves 331 and second clearance holes 332 are provided on the support block 330. The second clearance groove 331 has the same function as the first clearance groove 312, and is also used to correspond to the structure of the bent part 221 of the bent pipe 220 to form support. The diameter and length of the second clearance hole 332 are adapted to the diameter and length of the corresponding part of the bent pipe 220, and are used to place the corresponding part of the bent pipe 220 and form support.

[0052] In this embodiment, since the heat pipe 200 and the cover plate 100 in a three-dimensional heat spreader of a certain design type are fixed in structure, the graphite fixture 300 can also be reused, thereby reducing production costs while ensuring welding quality.

[0053] In the above embodiments, such as Figure 5 As shown, to prevent the pressure plate 320 from moving during the diffusion welding process, which could result in the flange 230 and the cover plate 100 not being fully fitted, several mounting posts (not shown in the figure, but specifically columnar structures) are provided on the pressure plate 320 in this embodiment, and several mounting grooves 314 are provided on the pressure block 310. The mounting posts and mounting grooves 314 are shaped to match and are detachably connected, which can effectively prevent sliding between the pressure block 310 and the pressure plate 320, and further ensure the welding quality.

[0054] Based on the above embodiments, the actual assembly process of the above-mentioned 3DVC heat pipe and VC cover plate assembly structure is as follows:

[0055] First, such as Figure 1 As shown, the heat pipe 200 is fitted into the mounting hole 110 on the cover plate 100 according to the design requirements, and the heat pipe 200 is moved so that the flange 230 at one end of the heat pipe 200 fits against the cover plate 100 to form the combination pattern required by the design. In this state, the flange 230 should correspond to one side of the stepped hole 120.

[0056] Then, as Figure 5 As shown, the combined heat pipe 200 and cover plate 100 are placed in the pressure block 310, so that the cover plate 100 is fitted into the positioning groove 311, and the heat pipe 200 is placed and supported in conjunction with the support block 330, etc.

[0057] Finally, the pressure plate 320 and the pressure block 310 are combined to form a shape as follows: Figure 6The structure is designed and the assembled whole is placed in a diffusion furnace. The parameters of the diffusion furnace are adjusted to a pressure of 12T, a temperature of 860℃, and a constant temperature for 2 hours for diffusion sintering. After sintering is completed, quality inspection is carried out, and the cover plate 100 and heat pipe 200 are removed, thus achieving the effect of completely assembling the heat pipe 200 and the cover plate 100.

[0058] This invention pre-designs the structure of the heat pipe 200 and the cover plate 100, combining the flange 230 at the end of the heat pipe 200 with the assembly hole 110 on the cover plate 100. This makes the heat pipe 200 and the cover plate 100 meet the welding requirements of diffusion welding, bypassing the problem of high space requirements in traditional welding, avoiding the risks of incomplete welding and missing welding rings, and at the same time meeting the production steps that can be mass-produced, which can effectively improve production efficiency and capacity.

[0059] Based on the above embodiments, this utility model also provides a heat sink, which includes the assembly structure of the 3DVC heat pipe and VC cover plate in the above embodiments. The assembly structure of the 3DVC heat pipe and VC cover plate includes: a cover plate, on which a plurality of assembly holes are arranged in an array, the assembly holes being arranged through both sides of the cover plate; a heat pipe, on which a plurality of heat pipes are arranged, one end of which is provided with a flange, the flange corresponding to the assembly hole; the end of the heat pipe with the corresponding flange is fitted into the assembly hole, and the flange is fitted to one side of the cover plate, the flange and the cover plate are fixedly connected by diffusion welding. This utility model, by providing assembly holes on the cover plate, providing flanges at one end of the heat pipes, limiting the position by fitting the heat pipes into the assembly holes and fitting the flanges to the cover plate, and forming a complete weld by diffusion welding, avoids the production process of welding in a small space in the traditional production mode. It can avoid the problems of incomplete welding and missing weld rings, improve welding quality, and enable mass production, effectively improving production efficiency and capacity.

[0060] In summary, this utility model provides an assembly structure and radiator for a 3DVC heat pipe and a VC cover plate. The assembly structure includes: a cover plate with a plurality of assembly holes arranged in an array, extending through both sides of the cover plate; several heat pipes, each with a flange at one end, corresponding to a mounting hole; the flanged end of the heat pipe is fitted into the mounting hole and fitted against one side of the cover plate; the flange and cover plate are fixedly connected by diffusion welding. This utility model, by providing assembly holes on the cover plate, a flange at one end of the heat pipe, and limiting the heat pipe's position by fitting it into the assembly hole and the flange against the cover plate, and forming a complete weld through diffusion welding, avoids the traditional production process of welding in a small space. This avoids problems such as incomplete welds and missing weld rings, improves welding quality, and allows for mass production, effectively increasing production efficiency and capacity.

[0061] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An assembly structure for a 3D VC heat pipe and a VC cover plate, characterized in that, The assembly structure of the 3DVC heat pipe and VC cover plate includes: A cover plate, wherein a plurality of mounting holes are arranged in an array on the cover plate, and the mounting holes are arranged through both sides of the cover plate; A heat pipe, wherein a plurality of heat pipes are provided, and a flange is provided at one end of the heat pipe, the flange corresponding to the assembly hole; One end of the heat pipe corresponding to the flange is fitted into the assembly hole, and the flange is fitted onto one side of the cover plate. The flange and the cover plate are fixedly connected by diffusion welding.

2. The assembly structure of the 3DVC heat pipe and VC cover plate according to claim 1, characterized in that, A stepped hole is provided inside the cover plate on one side corresponding to the flange, and the stepped hole is concentric with the assembly hole.

3. The assembly structure of the 3DVC heat pipe and VC cover plate according to claim 2, characterized in that, The diameter of the stepped hole is larger than the diameter of the assembly hole, and the diameter of the stepped hole is smaller than the diameter of the flange. When the flange is fitted onto one side of the cover plate, the flange covers the stepped hole.

4. The assembly structure of the 3DVC heat pipe and VC cover plate according to claim 1, characterized in that, The assembly structure of the 3DVC heat pipe and the VC cover plate also includes a detachable graphite fixture, which is used to ensure that the flange and the cover plate fit tightly together.

5. The assembly structure of the 3DVC heat pipe and VC cover plate according to claim 4, characterized in that, The graphite fixture includes: A pressure block, used to support the heat pipe and the cover plate; A pressure plate, which is adapted to the pressure block, is used to limit the position of the cover plate.

6. The assembly structure of the 3DVC heat pipe and VC cover plate according to claim 5, characterized in that, The heat pipe includes a straight pipe and a bent pipe with several bends. The pressure block is provided with a positioning groove, the shape of which is adapted to the shape of the cover plate; The pressure block is provided with a plurality of first clearance grooves and a plurality of first clearance holes. The first clearance grooves are used to place the bent pipe; the first clearance holes are used to place the straight pipe.

7. The assembly structure of the 3DVC heat pipe and VC cover plate according to claim 6, characterized in that, The graphite fixture also includes: The support block is provided in multiple ways, and the support block is provided with a number of second clearance grooves and a number of second clearance holes. The second clearance grooves and the second clearance holes are used to support the bend and the bending part.

8. The assembly structure of the 3DVC heat pipe and VC cover plate according to claim 5, characterized in that, The pressure plate is provided with a number of mounting posts, and the pressure block is provided with a number of mounting slots. The mounting posts and the mounting slots are detachably engaged and connected.

9. The assembly structure of the 3DVC heat pipe and VC cover plate according to claim 1, characterized in that, The flange is integrally formed with the heat pipe.

10. A radiator, characterized in that, The heat sink includes the assembly structure of the 3DVC heat pipe and VC cover plate as described in any one of claims 1-9.

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