A vapor chamber heat dissipation device

Abstract

The utility model discloses a kind of temperature equalizing plate heat sink, including temperature equalizing plate, multiple groups of respectively mutually thermal contact heat pipe group and fin group. The flat evaporation end of first heat pipe group is attached temperature equalizing plate, cylindrical condensing end is horizontally passed through each radiating fin of first fin group, and heat is transported to distal end by transmission section, to effectively utilize distal end's heat dissipation space, each radiating fin of first fin group is stacked along horizontal direction, avoid to occupy vertical space, simultaneously, heat is evenly conducted to each radiating fin along horizontal direction, avoid temperature stratification caused by gravity in vertical layout, temperature equalizing is better. The proximal end heat pipe of second heat pipe group and the L-shaped heat pipe of third heat pipe group are shared with temperature equalizing plate cavity respectively, reduce thermal resistance, and each proximal end heat pipe is connected with temperature equalizing plate vertically, to form shortest heat conduction path, and heat dissipation efficiency is high. Overall structure is through multi-path heat conduction and modularization layout, significantly improve heat dissipation efficiency and space utilization.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for electronic devices, and in particular to a heat dissipation device for a heat exchange plate. Background Technology

[0002] Existing heat dissipation devices typically employ a single heat pipe or vapor chamber combined with fins, resulting in a single heat conduction path and insufficient heat dissipation efficiency. Especially in compact spaces, traditional heat dissipation structures struggle to achieve rapid and even heat distribution and diffusion, leading to localized overheating. Furthermore, combinations of multiple heat pipes and multiple fins are often space-constrained, failing to meet high heat dissipation demands. This is particularly relevant given the increasing heat dissipation requirements of high-power heat sources. Therefore, there is a pressing need for a highly efficient vapor chamber cooling device that can further optimize heat conduction paths and expand the heat dissipation module by adding heat pipes and fins to accommodate higher power requirements. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a heat dissipation device with a heat spreader, which optimizes the heat conduction path and improves heat dissipation efficiency through the coordinated layout of multiple heat pipe groups and multiple fin groups.

[0004] The technical solution of this utility model includes:

[0005] A heat spreader that comes into thermal contact with a heat source;

[0006] The first heat pipe assembly is disposed on one side of the heat exchange plate and is in thermal contact with the heat exchange plate;

[0007] The first fin group is composed of multiple stacked heat dissipation fins and is in thermal contact with the first heat pipe group;

[0008] The first heat pipe group includes several distal heat pipes. Each distal heat pipe includes an evaporation end, a condensation end, and a transmission section connecting the evaporation end and the condensation end. The evaporation end is hollow and flat and stacked with a heat spreader. The condensation end is inserted into the heat dissipation fins.

[0009] A further technical solution is that the heat dissipation fins of the first fin group are stacked in a horizontal direction, and the condensation ends of the distal heat pipes are horizontally inserted into the heat dissipation fins of the first fin group.

[0010] The further technical solution is: it includes multiple sets of first heat pipe groups and first fin groups that are in thermal contact with each other, and the evaporation ends of each first heat pipe group are distributed at intervals on the heat spreader.

[0011] A further technical solution is: it also includes a second heat pipe group and a second fin group that are in thermal contact with each other. The second heat pipe group includes a number of proximal heat pipes that are spaced apart. The open end of each proximal heat pipe is connected to the hollow cavity of the heat spreader, and the closed end of each proximal heat pipe passes through the second fin group.

[0012] A further technical solution is that the first heat pipe group and the second heat pipe group are both located on the same side of the heat spreader, and the evaporation end is staggered from each of the near-end heat pipes.

[0013] A further technical solution is that each of the near-end heat pipes extends in a direction perpendicular to the vapor chamber, and the stacking direction of each heat dissipation fin of the second fin group is the same as the extension direction of the near-end heat pipe.

[0014] A further technical solution is: it also includes a third heat pipe group and a third fin group that are in thermal contact with each other. The third heat pipe group includes a number of L-shaped heat pipes arranged at intervals. Each L-shaped heat pipe includes a vertical section that is in thermal contact with the second fin group and a horizontal section that is in thermal contact with the third fin group.

[0015] A further technical solution is that each of the L-shaped heat pipes is connected to the hollow cavity of the heat spreader through the open end of the vertical section, and passes through the closed end of the horizontal section to each heat dissipation fin of the third fin group.

[0016] A further technical solution is that the third fin group is disposed on the side corresponding to the second fin group, and the heat dissipation fins of the third fin group are stacked in the horizontal direction.

[0017] A further technical solution is as follows: a support bracket is provided below the heat exchange plate, and the support bracket is provided with a placement groove for the heat exchange plate to be embedded and placed. The support bracket is locked and fixed to the heat source through a locking component.

[0018] The beneficial technical effects of this utility model are as follows: In this structure, the flat evaporation end of the first heat pipe group is attached to the vapor chamber, and the cylindrical condensation end is horizontally inserted through each heat dissipation fin of the first fin group. Heat is then transported to the far end via a transmission section to effectively utilize the heat dissipation space at the far end. The heat dissipation fins of the first fin group are arranged horizontally to avoid occupying vertical space. Simultaneously, heat is uniformly conducted horizontally to each heat dissipation fin, avoiding temperature stratification caused by gravity in a vertical layout, resulting in better temperature uniformity. The near-end heat pipes of the second heat pipe group and the L-shaped heat pipes of the third heat pipe group share the cavity with the vapor chamber, reducing thermal resistance. Furthermore, each near-end heat pipe is vertically connected to the vapor chamber to form the shortest heat conduction path, resulting in high heat dissipation efficiency. The vertical sections of each L-shaped heat pipe pass through the second fin group and the horizontally stacked third fin group, further optimizing the heat dissipation space and improving heat dissipation efficiency.

[0019] By working together with a vapor chamber and multiple heat pipes, heat can be rapidly diffused laterally and vertically to achieve efficient heat dissipation. Through multi-path heat conduction and modular layout, heat dissipation efficiency and space utilization are significantly improved. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is an exploded view of the overall structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the specific structure of the remote heat pipe of this utility model;

[0023] The components are: 1. Heat spreader; 2. First heat pipe assembly; 21. Far end heat pipe; 211. Evaporator end; 212. Condenser end; 213. Transfer section; 3. First fin assembly; 4. Second heat pipe assembly; 41. Near end heat pipe; 5. Second fin assembly; 6. Third heat pipe assembly; 61. L-shaped heat pipe; 7. Third fin assembly; 8. Locking assembly; 81. Screw; 82. Spring. Detailed Implementation

[0024] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0025] like Figure 1 and Figure 2 As shown, the heat dissipation device of the present invention includes: a heat dissipation plate 1 that is in thermal contact with a heat source; a first heat pipe group 2 that is disposed on one side of the heat dissipation plate 1 and in thermal contact with the heat dissipation plate 1; and a first fin group 3 that is composed of multiple heat dissipation fins stacked together, wherein the first heat pipe group 2 is in thermal contact with the first fin group 3.

[0026] Specifically, such as Figure 3 The first heat pipe assembly 2 includes a plurality of distal heat pipes 21 evenly arranged on the upper surface of the heat spreader 1. Each distal heat pipe 21 includes an evaporation end 211, a condensation end 212, and a transmission section 213 connecting the evaporation end 211 and the condensation end 212. The evaporation end 211 is hollow and flat and is stacked with the heat spreader 1. The condensation end 212 and the transmission section 213 are hollow cylinders and pass through the corresponding plurality of heat dissipation fins of the first fin assembly 3. The hollow and flat structure of the evaporation end 211 can form surface contact with the heat spreader 1, significantly reducing the contact thermal resistance and improving the heat conduction efficiency from the heat spreader 1 to the first heat pipe assembly 2. The hollow cylindrical structure of the transmission section 213 makes it less prone to deformation and collapse when bent or folded, maintaining the mechanical strength of the transmission section 213. The hollow cylindrical structure of the condensation end 212 is easier to process and pass through the circular holes of each heat dissipation fin.

[0027] To further improve space utilization, the heat dissipation fins of the first fin group 3 are stacked evenly in the horizontal direction, and the condensation end 212 of each far-end heat pipe 21 is horizontally inserted into each heat dissipation fin of the first fin group 3 to avoid occupying vertical space. At the same time, heat is evenly conducted to each heat dissipation fin in the horizontal direction, avoiding temperature stratification caused by gravity in the vertical layout, and resulting in better temperature uniformity.

[0028] In this embodiment, multiple sets of first heat pipe groups 2 and first fin groups 3 can be set according to heat dissipation requirements, and each evaporation end 211 is distributed at intervals on the heat spreader 1.

[0029] It also includes a second heat pipe group 4 and a second fin group 5 that are in thermal contact with each other. The second heat pipe group 4 and the first heat pipe group 2 are both disposed on the same side of the heat spreader 1 and are in thermal contact with the heat spreader 1.

[0030] The second heat pipe assembly 4 includes a plurality of near-end heat pipes 41 evenly arranged on the upper surface of the heat spreader 1. Each near-end heat pipe 41 is a hollow cylindrical structure and is arranged perpendicularly to the heat spreader 1. The end of each near-end heat pipe 41 connected to the heat spreader 1 is an open end, and each near-end heat pipe 41 is connected to the hollow cavity of the heat spreader 1 through the open end; the end away from the heat spreader 1 is a closed end.

[0031] To ensure that heat is evenly diffused from each near-end heat pipe 41 to all corresponding heat dissipation fins of the second fin group 5, the stacking direction of each heat dissipation fin of the second fin group 5 is the same as the extension direction of the near-end heat pipe 41. That is, each heat dissipation fin of the second fin group 5 is stacked on the upper surface of the heat exchange plate 1 in a direction perpendicular to the heat exchange plate 1 to form an axially through airflow channel.

[0032] Each heat dissipation fin of the second fin group 5 is provided with a vertical through hole corresponding to the near-end heat pipe 41. The near-end heat pipe 41 passes through the vertical through hole, and the closed end of each near-end heat pipe 41 is flush with the upper end surface of the second fin group 5.

[0033] In this embodiment, the projected outline of the second fin group 5 matches the outline of the upper surface of the heat spreader 1 to form a covered heat dissipation structure.

[0034] Since the second heat pipe group 4 and the second fin group 5 are located in the hot spot area, the heat is quickly conducted directly upward to the second fin group 5 through the vertical connection between each near-end heat pipe 41 and the heat spreader 1 to form the shortest heat conduction path, thereby reducing thermal resistance.

[0035] In another embodiment, to further optimize the system space, especially the upper space on the side of the second fin group 5, and to increase the heat dissipation area, a third fin group 7 composed of multiple stacked heat dissipation fins is also provided on the side of the second fin group 5. The heat dissipation fins of the third fin group 7 are stacked horizontally. A third heat pipe group 6 that cooperates with the third fin group 7 is provided on the heat spreader 1. The third heat pipe group 6 is a hollow cylindrical structure, including several L-shaped heat pipes 61 spaced apart. Each L-shaped heat pipe 61 includes a vertical section that makes thermal contact with the second fin group 5 and a horizontal section that makes thermal contact with the third fin group 7. The open end of the vertical section of each L-shaped heat pipe 61 is connected to the hollow cavity of the heat spreader 1, and the closed end of the horizontal section passes through each heat dissipation fin of the third fin group 7 to achieve optimal heat dissipation performance.

[0036] The second fin group 5 is provided with a U-shaped vertical groove at the position corresponding to the L-shaped heat pipe 61. The vertical part of the L-shaped heat pipe 61 is located in the vertical groove, and the horizontal section of the L-shaped heat pipe 61 extends outward along the opening side of the vertical groove.

[0037] The third fin group 7 can be set in multiple groups as needed, with each group of the third fin group 7 set on the corresponding side of the second fin group 5 to improve heat dissipation efficiency.

[0038] A support bracket is provided below the heat spreader 1. The support bracket has a hollow structure and a mounting groove for the heat spreader 1 to be embedded in. In use, the heat source is located in the hollow space of the support bracket and in contact with the heat spreader 1, and is locked and fixed to the support bracket by several locking components 8. The locking components 8 include several screws 81 and springs 82 sleeved on each screw 81. The second fin group 5 has screw slots for the screws 81 to be installed. Each screw 81 passes through the screw slot, the threaded hole of the support bracket, and the heat source in sequence and is then fixed. The springs 82 are located between the head of the screw 81 and the heat spreader 1 to provide elastic preload.

[0039] During installation, firstly, the vertical sections of each near-end heat pipe 41 and L-shaped heat pipe 61 are vertically welded to the heat spreader 1. Then, the evaporation ends 211 of each far-end heat pipe 21 are staggered from each near-end heat pipe 41 and each L-shaped heat pipe 61 and welded to the heat spreader 1. Next, the second fin group 5 is inserted and fixed along the vertical through hole and the U-shaped vertical through groove. Finally, the first fin group 3 and the third fin group 7 are horizontally inserted, and the heat spreader 1 is pressed onto the support bracket by the locking assembly 8.

[0040] In another embodiment, the heat spreader 1, the second heat pipe group 4, and the third heat pipe group 6 are all integrally formed and share a cavity, which effectively reduces thermal resistance and improves the performance of the heat dissipation module.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A heat dissipation device with a heat exchange plate, characterized in that: include: A heat spreader (1) in thermal contact with a heat source; The first heat pipe assembly (2) is disposed on one side of the heat exchange plate (1) and is in thermal contact with the heat exchange plate (1); The first fin group (3) is composed of multiple heat dissipation fins stacked together and is in thermal contact with the first heat pipe group (2); The first heat pipe group (2) includes several distal heat pipes (21). Each distal heat pipe (21) includes an evaporation end (211), a condensation end (212), and a transmission section (213) connecting the evaporation end (211) and the condensation end (212). The evaporation end (211) is hollow and flat and is stacked with the heat spreader (1). The condensation end (212) is inserted into the heat dissipation fins.

2. The heat dissipation device of a heat exchange plate according to claim 1, characterized in that: The heat dissipation fins of the first fin group (3) are stacked in the horizontal direction, and the condensation end (212) of each distal heat pipe (21) is horizontally inserted through each heat dissipation fin of the first fin group (3).

3. The heat dissipation device of a heat exchange plate according to claim 1, characterized in that: It includes multiple sets of first heat pipe groups (2) and first fin groups (3) that are in thermal contact with each other, and the evaporation ends (211) of each first heat pipe group (2) are distributed at intervals on the heat spreader (1).

4. The heat dissipation device of a heat exchange plate according to claim 1, characterized in that: It also includes a second heat pipe group (4) and a second fin group (5) that are in thermal contact with each other. The second heat pipe group (4) includes a number of near-end heat pipes (41) spaced apart. The open end of each near-end heat pipe (41) is connected to the hollow cavity of the heat spreader (1), and the closed end of each near-end heat pipe (41) passes through the second fin group (5).

5. The heat dissipation device for a heat exchange plate according to claim 4, characterized in that: The first heat pipe group (2) and the second heat pipe group (4) are both located on the same side of the heat spreader (1), and the evaporation end (211) is installed separately from each of the near-end heat pipes (41).

6. The heat dissipation device of a heat exchange plate according to claim 4, characterized in that: Each of the near-end heat pipes (41) extends in a direction perpendicular to the heat spreader (1), and the stacking direction of each heat dissipation fin of the second fin group (5) is the same as the extension direction of the near-end heat pipe (41).

7. The heat dissipation device for a heat exchange plate according to claim 6, characterized in that: It also includes a third heat pipe group (6) and a third fin group (7) that are in thermal contact with each other. The third heat pipe group (6) includes a number of L-shaped heat pipes (61) arranged at intervals. Each L-shaped heat pipe (61) includes a vertical section that is in thermal contact with the second fin group (5) and a horizontal section that is in thermal contact with the third fin group (7).

8. The heat dissipation device of a heat exchange plate according to claim 7, characterized in that: Each of the L-shaped heat pipes (61) is connected to the hollow cavity of the heat spreader (1) through the open end of the vertical section, and passes through the closed end of the horizontal section to each heat dissipation fin of the third fin group (7).

9. The heat dissipation device of a heat exchange plate according to claim 8, characterized in that: The third fin group (7) is disposed on the side corresponding to the second fin group (5), and the heat dissipation fins of the third fin group (7) are stacked in the horizontal direction.

10. The heat dissipation device of a heat exchange plate according to claim 1, characterized in that: The temperature distribution plate (1) is provided with a support bracket below it. The support bracket is provided with a placement groove for the temperature distribution plate (1) to be embedded and placed. The support bracket is locked and fixed to the heat source through the locking assembly (8).

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