Three-dimensional vapor chamber assembling structure
By combining resistance welding and laser welding, the problems of loose structure and solder entering the cavity of the three-dimensional heat exchange plate were solved, achieving high-strength bonding and excellent heat conduction and dissipation effects.
Patent Information
- Application Number
- CN202510248924.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-08-20
- Filing Date
- 2025-03-04
- Publication Date
- 2026-03-03
AI Technical Summary
The existing three-dimensional heat exchanger structure is prone to loosening during the welding process, and the solder can easily enter the cavity and block the fluid transport path, affecting the heat conduction and heat dissipation efficiency.
A combination of resistance welding and laser welding is used to firmly bond the heat pipe to the shell through the fusion layer and welding products, and a sealing layer is set between the heat pipe and the ring wall to prevent the solder from entering the cavity.
It improves the stability and reliability of the bond, avoids solder clogging of capillary pores, reduces costs, and improves thermal conductivity and heat dissipation efficiency.
Smart Images
Figure CN121594682A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of heat dissipation, and more particularly to a three-dimensional heat exchanger assembly structure. Background Technology
[0002] The existing three-dimensional vapor chamber structure mainly includes a vapor chamber and a plurality of heat pipes. Each heat pipe is spaced apart on the vapor chamber, and the cavity inside the vapor chamber is connected to the cavity of each heat pipe, so as to achieve rapid heat conduction and heat dissipation through the change of vapor and liquid phases.
[0003] However, while existing three-dimensional vapor chamber structures possess excellent heat conduction and dissipation performance, the following problems remain to be addressed in practical applications. Because the heat pipes and vapor chamber are joined using solder paste such as copper or solder paste, they are prone to loosening and other defects due to vibration during assembly or handling. Furthermore, during manufacturing, copper or solder paste can easily seep into the cavity, affecting or blocking the transport path of the internal working fluid, thereby reducing its heat conduction and dissipation efficiency. Summary of the Invention
[0004] One objective of this application is to provide a three-dimensional heat exchanger assembly structure that is not only firmly bonded and has high strength, but also prevents solder from entering the cavity and affecting the transmission of working fluid.
[0005] To achieve the above objectives, this application provides a three-dimensional heat exchanger assembly structure, including a shell, a plurality of heat pipes, a capillary structure, and a working fluid. The shell includes a first shell plate and a second shell plate that is tightly sealed to the first shell plate. A cavity is formed between the first shell plate and the second shell plate. The second shell plate has a plurality of through holes. Each heat pipe passes through a corresponding through hole. Each heat pipe has an open end, and a flange is provided at the open end. The flange includes a transverse surface and a longitudinal surface. The transverse surface of each flange is bonded to the second shell plate by a weld layer, and the longitudinal surface of each flange is bonded to the second shell plate by a weld product. The capillary structure is disposed in the cavity and attached to the shell. The working fluid is disposed in the cavity.
[0006] In some embodiments, the weld layer is formed by resistance welding.
[0007] In some embodiments, the weld product is formed by a laser welding method.
[0008] In some embodiments, a recessed groove is provided around the outer periphery of each through hole of the second shell plate, and each flange is respectively accommodated in the recessed groove.
[0009] In some embodiments, the second shell plate includes a top plate, and a bulge higher than the outer surface of the top plate is formed at the position corresponding to each recessed groove.
[0010] In some embodiments, the second shell plate has an inner plane, and the transverse surfaces of each flange are flat against the inner plane.
[0011] In some embodiments, the weld products are formed between the longitudinal plane and the inner plane.
[0012] In some embodiments, the flange extends from the open end of the heat pipe in an enlarged manner, and the centerlines of the flange and the heat pipe are arranged perpendicularly.
[0013] In some embodiments, a ring wall extends around each through hole in the second shell plate, and each heat pipe passes through the ring wall.
[0014] In some embodiments, a sealing layer is also provided between each heat pipe and each ring wall.
[0015] In some embodiments, a plurality of support columns are also included, each support column being spaced apart within the cavity and erected between the first shell plate and the second shell plate.
[0016] In some embodiments, a heat dissipation fin assembly is further included, which is sleeved on each heat pipe.
[0017] This application also has the following advantages: Since resistance welding does not require solder, it saves costs. It avoids the blockage of the internal working fluid's movement path during processing due to the melting of low-melting-point solder such as copper paste or tin paste clogging the pores of the capillary structure. Its manufacturing process has minimal thermal effects, minimal workpiece deformation, and extremely good bonding strength and reliability. Attached Figure Description
[0018] Figure 1 This is an exploded view of the second shell plate and each heat pipe of this application.
[0019] Figure 2 This is an external view of the second shell plate and each heat pipe assembly of this application.
[0020] Figure 3 This is a cross-sectional view and a magnified view of a portion of the second shell plate and each heat pipe assembly of this application.
[0021] Figure 4 This is an exploded view of the capillary structure after the second shell plate and each heat pipe are combined in this application.
[0022] Figure 5 This is an exploded view of the three-dimensional heat exchanger assembly structure of this application.
[0023] Figure 6 This is an appearance drawing of the three-dimensional heat exchanger assembly structure of this application.
[0024] Figure 7This is a cross-sectional view of the three-dimensional temperature equalization plate assembly structure of this application.
[0025] Figure 8 This is a combined cross-sectional view of another embodiment of this application.
[0026] In the picture: 10: Shell; 11: First shell plate; 111: Base plate; 112: Enclosure; 113: Folding Fate; 12: Second shell plate; 120: Inner plane; 121: Top plate; 122: Through hole; 123: Recessed groove; 1231: Inner circumferential surface; 124:convex hull; 125: Circumferential wall; 20: Heat pipe; 21: Open end; 211: Flange; 212: Horizontal plane; 213: Longitudinal plane; 22: Closed end; 30: Capillary tissue; 31: Lower capillary tissue; 32: Upper capillary tissue; 321: Perforation; 40: Working fluid; 50: Support column; 60: Heat dissipation fin assembly; A: cavity; S: Sealing layer; W1: Welded layer; W2: Welding product. Detailed Implementation
[0027] The present application will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present application, but the embodiments are not intended to limit the present application.
[0028] Please see Figures 1 to 7 As shown, this application provides a three-dimensional heat exchanger assembly structure, which mainly includes a shell 10, a plurality of heat pipes 20, a capillary structure 30 and a working fluid 40.
[0029] Please refer to the following first. Figure 5 and Figure 7As shown, the shell 10 mainly includes a first shell plate 11 and a second shell plate 12. The first shell plate 11 and the second shell plate 12 are made of materials with good thermal conductivity, such as copper, aluminum, magnesium or their alloys. The first shell plate 11 mainly includes a bottom plate 111 and a surrounding plate 112 that bends upward from the periphery of the bottom plate 111. A flange 113 extends outward from the end of the surrounding plate 112 away from the bottom plate 111.
[0030] The second shell plate 12 mainly includes a top plate 121. The second shell plate 12 is closely connected and sealed to the flange 113 of the first shell plate 11 through its top plate 121, so as to form a cavity A between the first shell plate 11 and the second shell plate 12.
[0031] Please continue reading. Figures 1 to 3 As shown, a plurality of through holes 122 are spaced apart on the inner side of the top plate 121 of the second shell plate 12. A recessed groove 123 is provided around the outer periphery of each through hole 122. The recessed groove 123 has an inner peripheral surface 1231. A protrusion 124 higher than the outer surface of the top plate 121 is formed at the position corresponding to the recessed groove 123. In addition, a ring wall 125 extends upward from the periphery of each through hole 122.
[0032] Each heat pipe 20 is inserted through a corresponding through hole 122. Each heat pipe 20 has an open end 21 and a closed end 22. A flange 211 is provided at the open end 21. The flange 211 includes a transverse surface 212 and a longitudinal surface 213 connecting the transverse surface 212. Each flange 211 is respectively accommodated in a recessed groove 123, and the lower surface of the flange 211 is flush with or lower than the inner surface of the top plate 121 of the second shell plate 12. The flange 211 extends from the open end 21 of the heat pipe 20 in an expanded manner, and the flange 211 is perpendicular to the centerline of the heat pipe 20.
[0033] During the connection, the closed end 22 of the heat pipe 20 is inserted through the through hole 122 and the annular wall 125 of the second shell plate 12, and the flange 211 is embedded in the recessed groove 123. By using welding equipment and fixtures (not shown), a welding layer W1 is formed between the transverse surface 212 of the flange 211 and the wall of the recessed groove 123, thereby connecting each heat pipe 20 to the second shell plate 12.
[0034] In this embodiment, welding is performed using a spot welding machine (or: butt welding machine). During operation, pressure is first applied to bring the transverse surface 212 of the flange 211 and the wall of the recessed groove 123 of the second shell plate 12 into close contact. Then, current is applied, and under the action of resistance heat and a large amount of plastic deformation energy, the two separated metal atoms are brought close to the lattice distance to form a metal bond. Sufficient common grains are generated on the bonding surface to obtain a weld point, weld seam or butt joint. Melting will occur at the contact position, and after cooling, a fusion layer W1 is formed.
[0035] Secondly, a weld product W2 is formed between the longitudinal surface 213 of the flange 211 and the inner circumferential surface 1231 of the recessed groove 123 using laser welding equipment (not shown), thereby bonding each heat pipe 20 to the second shell plate 12. This embodiment uses laser hard welding, which is not only easy to combine with computer control, CAD / CAM, etc., but also convenient to be incorporated into the production line, and is also a suitable welding method for robotic arms. During operation, a high-intensity laser beam heats the linear solder to melt it, and fixes it between the inner circumferential surface 1231 of the recessed groove 123 and the longitudinal surface 213 of the flange 211. After the molten metal cools and crystallizes, the weld product W2 is formed, which can be joined almost without melting the base material, and the joint strength and joint speed are twice or more than those of ordinary spot welding.
[0036] Furthermore, solder is applied to the heat pipe 20 and the annular wall 125 using either soft soldering or hard soldering, and then heated to fill the space between the heat pipe 20 and the annular wall 125, thereby forming a sealing layer S. Soft soldering uses paste-like zinc, tin, and lead as solder; hard soldering uses paste-like copper, aluminum, and magnesium as solder.
[0037] Please continue reading. Figures 4 to 7 As shown, the capillary structure 30 is disposed within the aforementioned cavity A, and it can be made of materials with good capillary adsorption, such as metal woven mesh, porous sintered powder, or fiber bundles. Its shape is roughly similar to that of the aforementioned shell 10. In this embodiment, the capillary structure 30 mainly includes a lower capillary structure 31 and an upper capillary structure 32. The lower capillary structure 31 is attached to the first shell plate 11 and is fixed to the inner surface of the first shell plate 11 by a heat diffusion welding process. The upper capillary structure 32 is attached to the second shell plate 12 and is fixed to the inner surface of the second shell plate 12 by a heat diffusion welding process. Furthermore, a plurality of perforations 321 are provided in the upper capillary structure 32, and the perforations 321 of the upper capillary structure 32 are roughly corresponding to the configuration of the heat pipe 20, and the upper capillary structure 32 is in contact with the capillary structure of the heat pipe 20.
[0038] The working fluid 40 can be pure water, which is injected into the aforementioned cavity A and subjected to a degassing and sealing process, thereby forming a vacuum chamber in cavity A.
[0039] In one embodiment, the three-dimensional temperature distribution plate joining structure of this application further includes a plurality of support columns 50, each support column 50 being spaced apart in the cavity A and erected between the first shell plate 11 and the second shell plate 12.
[0040] In addition, during use, a heat sink fin assembly 60 is attached to each heat pipe 20 to improve the overall heat dissipation efficiency of the structure.
[0041] Please continue reading. Figure 8 As shown, the three-dimensional heat exchanger assembly structure of this application can be as described in the above embodiments, or as described in this embodiment. The difference between this embodiment and the previous embodiment is that: the second shell plate 12 has an inner plane 120, the transverse surface 212 of each flange 211 is flatly attached to the inner plane 120, and a fusion layer W1 is formed between the transverse surface 212 of the flange 211 and the inner plane 120 of the second shell plate 12, and a weld product W2 is formed between the longitudinal surface 213 of the flange 211 and the inner plane 120.
[0042] The embodiments described above are merely preferred embodiments for the purpose of fully illustrating this application, and the scope of protection of this application is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on this application are all within the scope of protection of this application.
Claims
1. A three-dimensional heat exchanger assembly structure, characterized in that, include: A housing includes a first shell plate and a second shell plate that is tightly sealed to the first shell plate, a cavity is formed between the first shell plate and the second shell plate, and a plurality of through holes are provided in the second shell plate; A plurality of heat pipes are respectively inserted through each of the through holes. Each heat pipe has an open end and a flange is provided at the open end. The flange includes a transverse surface and a longitudinal surface. The transverse surface of each flange is bonded to the second shell plate by a fusion layer, and the longitudinal surface of each flange is bonded to the second shell plate by a weld product. A capillary structure is disposed within the cavity and attached to the housing; and A working fluid is disposed in the cavity.
2. The three-dimensional heat equalizer assembly structure as described in claim 1, characterized in that, The weld layer is formed by resistance welding.
3. The three-dimensional heat equalizer assembly structure as described in claim 1, characterized in that, The weld product is formed by laser welding.
4. The three-dimensional heat equalizer assembly structure as described in claim 1, characterized in that, A recessed groove is provided around the outer periphery of each of the through holes in the second shell plate, and each flange is respectively accommodated in the respective recessed groove.
5. The three-dimensional heat equalizer assembly structure as described in claim 4, characterized in that, The second shell plate includes a top plate, on which a convex bulge higher than the outer surface of the top plate is formed at the position corresponding to each of the recessed grooves.
6. The three-dimensional heat equalization plate assembly structure as described in claim 1, characterized in that, The second shell plate has an inner plane, and the transverse surfaces of each of the flanges are flat against the inner plane.
7. The three-dimensional heat equalization plate assembly structure as described in claim 6, characterized in that, Each of the weld products is formed between each of the longitudinal planes and the inner plane.
8. The three-dimensional heat equalizer assembly structure as described in claim 1, characterized in that, The flange extends from the open end of the heat pipe in an enlarged manner, and the centerline of the flange and the heat pipe are arranged perpendicularly.
9. The three-dimensional heat equalizer assembly structure as described in claim 1, characterized in that, A ring wall extends around each of the through holes in the second shell plate, and each heat pipe passes through the ring wall.
10. The three-dimensional heat equalizer assembly structure as described in claim 9, characterized in that, A sealing layer is also provided between each heat pipe and each annular wall.
11. The three-dimensional heat equalizer assembly structure as described in claim 1, characterized in that, It also includes a plurality of support columns, each of which is spaced apart within the cavity and erected between the first shell plate and the second shell plate.
12. The three-dimensional heat equalizer assembly structure as described in claim 1, characterized in that, It also includes a heat dissipation fin assembly, which is sleeved on each of the heat pipes.