Heat dissipation module

Abstract

The utility model provides a kind of heat dissipation module, include: a bottom plate, with a containing part and a insertion pipe part, wherein the insertion pipe part is located at the at least one side edge of the bottom plate;A bottom capillary structure is arranged on the containing part of the bottom plate;At least one heat pipe is inserted into the insertion pipe part of the bottom plate, the heat pipe includes a pipe capillary structure and an extension capillary structure connected to the pipe capillary structure, the pipe capillary structure is arranged in the heat pipe, the extension capillary structure extends and protrudes from the heat pipe and connects the bottom capillary structure;And a top plate is arranged on the bottom plate, and forms a chamber with the bottom plate to fill a working liquid. By setting the extension capillary structure, the working fluid in the heat pipe can be effectively ensured to return to the bottom capillary structure through the extension capillary structure, to solve the problem of working fluid return not smooth.

Description

Technical Field

[0001] This utility model relates to a heat dissipation module, and more particularly to a heat dissipation module that can increase the efficiency of working fluid reflux. Background Technology

[0002] As customers' requirements for heat dissipation in electronic devices (such as computers or servers) increase, a 3D vapor chamber (3D VC) structure has been developed. Compared with traditional 2D vapor chambers, this 3D vapor chamber offers higher integration, higher vapor diffusion efficiency, lower thermal resistance, and a higher heat dissipation limit. However, with the increasing integration of electronic components such as chips, the demand for heat dissipation is also increasing. As a result, conventional heat pipes and / or vapor chambers can no longer meet the heat dissipation requirements of such high heat flux. Consequently, 3D vapor chambers are gradually replacing single heat pipes and / or vapor chambers and are widely used in the field of electronic heat dissipation.

[0003] The current 3D vapor chamber (3D VC) structure has a vapor chamber that is horizontally arranged and heat pipes that are vertically arranged. The open end of the heat pipe is connected to the hole in the vapor chamber, so that the cooling working fluid can flow through the capillary inside the heat pipe to the open end and then flow back to the capillary on the lower side of the vapor chamber by dripping.

[0004] However, the above structural design is only applicable to the case where the heat pipe is set vertically relative to the vapor chamber. If the heat pipe and the vapor chamber are set horizontally, the working fluid cooling inside the heat pipe cannot drip onto the capillaries inside the vapor chamber by gravity, and the capillary structure inside the heat pipe cannot make proper contact with the lower capillaries of the vapor chamber. This results in the working fluid being unable to flow back, causing a decrease in heat exchange efficiency or failure. Utility Model Content

[0005] Therefore, in order to effectively solve the above problems, the purpose of this utility model is to provide a heat dissipation module that can improve the reflux efficiency of the working liquid inside the heat pipe.

[0006] To achieve the above objectives, the present invention provides a heat dissipation module, comprising: a base plate having a receiving portion and an insertion portion, wherein the insertion portion is disposed on at least one side of the base plate; a bottom capillary structure disposed on the receiving portion of the base plate; at least one heat pipe inserted into the insertion portion of the base plate, the heat pipe comprising a tube capillary structure and an extension capillary structure connected to the tube capillary structure, the tube capillary structure being disposed within the heat pipe, and the extension capillary structure extending out of the heat pipe and connecting to the bottom capillary structure; and a top plate disposed on the base plate, forming a chamber together with the base plate to fill a working fluid.

[0007] It further includes: a capillary structure disposed on the top plate and located within the cavity.

[0008] The extended capillary structure can be any one of sintered powder, woven mesh, grid body or fiber body.

[0009] The heat pipe is a circular tube with an arc-shaped protrusion at its open end. The insertion part is provided with a baffle, and the arc-shaped protrusion is engaged with the baffle.

[0010] The heat pipe can be any of the following: an elliptical tube, a near-elliptical tube, or a flat tube.

[0011] The insertion section is provided with at least one tube slot, and a baffle wall is provided inside the tube slot to block the heat pipe.

[0012] The slot has a groove, and the groove and the baffle are used to prevent foreign matter from entering the chamber.

[0013] Therefore, the heat dissipation module provided by this utility model has an extended capillary structure on the tube capillary structure inside the heat pipe. The extended capillary structure extends out of the heat pipe and connects to the bottom capillary structure on the base plate. This can effectively ensure that the working fluid inside the heat pipe can flow back to the bottom capillary structure through the extended capillary structure, thereby solving the problem of poor working fluid return. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the heat dissipation module of this utility model;

[0015] Figure 2 for Figure 1 An exploded 3D diagram of the heat dissipation module;

[0016] Figure 3 for Figure 2 A partial 3D schematic diagram of a heat pipe;

[0017] Figure 4 for Figure 2 A partially enlarged schematic diagram of the insertion section of the base plate;

[0018] Figure 5 for Figure 2 Enlarged three-dimensional cross-sectional view of the heat pipe insertion part in the base plate;

[0019] Figure 6 This is a three-dimensional schematic diagram of another heat dissipation module of this utility model;

[0020] Figure 7 for Figure 6 Enlarged three-dimensional cross-sectional view of the heat pipe insertion part in the base plate;

[0021] Figure 8 for Figure 6Enlarged three-dimensional cross-sectional view of the insertion section of the base plate;

[0022] Figure 9 This is a flowchart illustrating the manufacturing method of the heat dissipation module of this utility model;

[0023] Figure 10 This is a three-dimensional exploded view of the assembly fixture used in the manufacturing method of the heat dissipation module of this utility model.

[0024] Figure 11 This is a three-dimensional exploded view of the heat dissipation module of this utility model when it is placed in the assembly fixture.

[0025] Explanation of reference numerals in the attached drawings: Heat dissipation module 1; base plate 11; side 110; receiving portion 111; tube insertion portion 112; tube slot 1120; baffle 1121; bottom capillary structure 12; heat pipe 13; tube capillary structure 131; extended capillary structure 132; inner tube connection portion 1321; outer tube connection portion 1322; arc protrusion 133; top plate 14; top capillary structure 15; support column 16; heat dissipation module 2; base plate 21; side 210; receiving portion 211; tube insertion portion 212; tube slot 2120; baffle 2121; groove 2122; bottom capillary structure 22; heat pipe 23; Pipe capillary structure 231; Extended capillary structure 232; Manufacturing method of heat dissipation module 3; Fixture preparation step 31; Assembly fixture 310; Base fixture 311; Bottom plate groove 3111; Heat pipe groove 3112; Limiting fixture 312; Limiting groove 3121; Press capillary structure fixture 313; Press block fixture 314; Sliding fixture 315; Bottom plate placement step 32; Bottom capillary structure setting step 33; Limiting fixture placement step 34; Heat pipe insertion step 35; Heat pipe positioning step 36; Sintering connection step 37; Fixture removal step 38; Top plate setting step 39. Detailed Implementation

[0026] The above-mentioned objectives of this utility model and its structural and functional characteristics will be described with reference to the preferred embodiments shown in the accompanying drawings.

[0027] like Figures 1 to 5As shown, this utility model provides a heat dissipation module 1, comprising: a base plate 11, a bottom capillary structure 12, a plurality of heat pipes 13, and a top plate 14; wherein the base plate 11 has a receiving portion 111 and a tube insertion portion 112, wherein the tube insertion portion 112 is disposed on one side (peripheral) edge 110 of the base plate 11; the bottom capillary structure 12 is disposed on the receiving portion 111 of the base plate 11; the plurality of heat pipes 13 are inserted (connected) to the tube insertion portion 112 of the base plate 11, each The heat pipe 13 includes a tube capillary structure 131 and an extended capillary structure 132 connected to the tube capillary structure 131. The tube capillary structure 131 is disposed within the heat pipe 13, and the extended capillary structure 132 extends and protrudes beyond the open end of the heat pipe 13 and connects to the edge of the bottom capillary structure 12 of the receiving portion 111. The top plate 14 and the bottom plate 11 are correspondingly disposed and jointly define a chamber for filling a working fluid. A top capillary structure 15 is disposed on one side of the top plate 14 within the chamber. In addition, a plurality of support columns 16 may be provided on the receiving portion 111 of the bottom plate 11, which can be used to support the top plate 14. It is understood that in this embodiment, the insertion portion 112 is disposed along the horizontal direction of the bottom plate 11 or the receiving portion 111, and is only disposed on a single side 110 of the bottom plate 11 (i.e., Figure 2 The insertion portion 112 is formed on the right side (as shown), but it is not limited to this; it can also be formed on the opposite side of the side 110 (i.e., Figure 2 At least one insertion portion 112 is formed simultaneously on the base plate 11 on the left side (as shown) or multiple sides. In other words, the present invention does not limit the insertion portion 112 to which side of the base plate 11 it is located. Any side of the base plate 11 or the receiving portion 111 can be used in the present invention.

[0028] In this embodiment, as Figure 3 and Figure 5As shown, the extended capillary structure 132 is a fibrous or woven mesh capillary structure, and the tubular capillary structure 131 is a sintered powder. The extended capillary structure 132 and the tubular capillary structure 131 are a combination of two different capillary structures. However, this is not the only possibility. The tubular capillary structure 131 and the extended capillary structure 132 can also be the same capillary structure integrally formed. Specifically, the tubular capillary structure 131 and the extended capillary structure 132 are the same capillary structure, such as a woven mesh or a fibrous body. In this embodiment, the extended capillary structure 132 can be any of the following: besides a woven mesh, it can also be a sintered powder, a mesh, or a fibrous body. Similarly, the tubular capillary structure 131 can be any of the following: besides a sintered powder, it can also be a woven mesh, a mesh, or a fibrous body. Understandably, in this embodiment, the extended capillary structure 132 includes an inner connecting portion 1321 and an outer connecting portion 1322. The inner connecting portion 1321 is disposed inside the heat pipe 13 and connected to or overlaps with the tube capillary structure 131. The outer connecting portion 1322 protrudes outside the heat pipe 13 and extends to the evaporation region, connecting to or overlapping with the bottom capillary structure 12. In order to effectively improve the reflux efficiency of the working fluid, the thickness of the extended capillary structure 132 can be designed to be greater than the thickness of the tube capillary structure 131 and the bottom capillary structure 12, so that the working fluid can quickly flow from the tube capillary structure 131 through the thicker extended capillary structure 132 to the bottom capillary structure 12. However, this is not the only possibility. The contact area between the extended capillary structure and the tube capillary structure 131 and the bottom capillary structure 12 can also be increased, thereby improving the return flow rate of the working fluid. It is understood that this can be achieved by designing the inner connecting portion 1321 as an arc to match the shape of the tube capillary structure 131, and designing the outer connecting portion 1322 as a plane to match the shape of the bottom capillary structure 12. In other words, the inner connecting portion 1321 and the outer connecting portion 1322 in the extended capillary structure 132 of this invention are not limited to being flat, elongated strips of equal width. Figure 5 As shown, it can have various design variations, such as different variations in shape, thickness, length or width, which can be applied to this utility model to improve the speed of working fluid return.

[0029] In addition, such as Figure 3 As shown, in this embodiment, the heat pipe 13 is a circular pipe, and the open end of the circular pipe has an arcuate protrusion 133. Specifically, the arcuate protrusion 133 is a semi-circular protrusion structure obtained by wire cutting. Figure 4As shown, the insertion section 112 is provided with multiple tube slots 1120 for inserting the heat pipes 13. Each tube slot 1120 has a baffle 1121, which is used to block and position the heat pipe 13 to prevent it from entering the chamber, and also provides horizontal support for the heat pipe. Specifically, the tube slot 1120 is a slot with a circular opening, and the baffle 1121 is a reverse semi-circular protrusion. The semi-circular protrusion structure of the arc protrusion 133 can be correspondingly engaged with the reverse arc protrusion, thereby effectively holding the heat pipe 13 in place to prevent it from rotating. This ensures that the extension capillary structure 132 of the heat pipe 13 is accurately positioned at the bottom and in contact with the bottom capillary structure 12 on the base plate 11. Figure 5 As shown. It can be understood that by placing the arcuate protrusion 133 of the heat pipe 13 at the upper edge of the open end of the heat pipe 13, and the extended capillary structure 132 at the lower edge of the open end of the heat pipe 13, and the baffle 1121 of the tube slot 1120 at the lower edge of the tube slot 1120, when the heat pipe 13 is inserted into the tube slot 1120 of the insertion part 112, the extended capillary structure 132 at the lower edge of the open end of the heat pipe 13 is aligned with and moves toward the baffle 1121 and passes over the baffle 1121 to the bottom capillary structure 12 in the cavity. This prevents the arcuate protrusion 133 from failing to properly engage with the baffle 1121 due to an incorrect placement angle of the heat pipe 13. Therefore, the structural design of this utility model is beneficial to improving the yield of the heat dissipation module 1 during assembly and manufacturing.

[0030] Please continue to refer to this. Figure 5 As shown, when the heat pipe 13 and the base plate 11 are both horizontally connected, the working fluid cooled inside the heat pipe 13 cannot drip onto the bottom capillary structure 12 of the base plate 11 by gravity, and the tube capillary structure 131 inside the heat pipe 13 cannot reliably contact the bottom capillary structure 12 of the base plate 11, resulting in poor backflow of the working fluid. Therefore, this invention specifically provides an extended capillary structure 132 on the tube capillary structure 131 inside the heat pipe 13. The extended capillary structure 132 extends and protrudes from the heat pipe 13 and connects to the edge of the bottom capillary structure 12 on the base plate 11 or directly extends and overlaps the evaporation area of ​​the bottom capillary structure 12. This effectively ensures that the working fluid inside the heat pipe 13 can smoothly return to the bottom capillary structure 12 through the extended capillary structure 132, thus solving the problem of poor backflow of the working fluid.

[0031] like Figures 6 to 8As shown, this utility model provides another heat dissipation module 2, comprising: a base plate 21 having a receiving portion 211 and an insert portion 212, wherein the insert portion 212 is disposed on opposite sides 210 of the base plate 21; a bottom capillary structure 22 disposed on the receiving portion 211 of the base plate 21; and a plurality of heat pipes 23 inserted into the insert portion 212 of the base plate 21, wherein each heat pipe 23 includes a tube capillary structure 231 and an extension capillary structure 232 connected to the tube capillary structure 231, the tube capillary structure 231 being disposed within the heat pipe 23, and the extension capillary structure 232 extending out of the heat pipe 23 and connected to the bottom capillary structure 22.

[0032] In this embodiment, the insertion section 212 is provided with multiple tube slots 2120 for the heat pipes 23 to be inserted into. Each tube slot 2120 is provided with a baffle 2121, which is used to block and fix (limit) the heat pipe 23 to prevent it from entering the chamber and to provide horizontal support for the heat pipe 23. It is understood that since the heat pipe 23 is a type of elliptical tube, and the opening of this type of elliptical tube is elliptical rather than circular, the opening of the tube slot 2120 is also elliptical rather than circular, so that the heat pipe 23 can be smoothly inserted and engaged in the tube slot 2120 without easily wobbling. Furthermore, a groove 2122 may be provided in the tube slot 2120. The groove 2122 and the baffle 2121 can be used to prevent foreign matter from entering the chamber. In this embodiment, the heat pipe 23 is an elliptical tube, but it is not limited to this; the heat pipe 23 can also be an elliptical tube or a flat tube. Similarly, the opening design of the tube slot 2120 can also be appropriately modified to suit the shape of the elliptical tube or the flat tube.

[0033] Please refer to Figures 9 to 11 As shown, this utility model provides a method 3 for manufacturing a heat dissipation module, and is accompanied by a reference. Figures 6 to 8As shown, it includes: a fixture preparation step 31, providing an assembly fixture 310, including a base fixture 311, a limiting fixture 312, a capillary structure fixture 313, a pressing block fixture 314, and a slider fixture 315, wherein the base fixture 311 is provided with a base plate groove 3111 and a plurality of heat pipe grooves 3112 communicating with the base plate groove 3111; a base plate placement step 32, placing a base plate 21 in the base plate groove 3111 on the base fixture 311, the base plate 21 having a receiving portion 211 and an insertion portion 212, wherein the insertion portion 212 is provided on the base plate. The base plate 21 has two opposite sides 210; a bottom capillary structure setting step 33, in which the bottom capillary structure 22 is set on the receiving portion 211 of the base plate 21; a limiting fixture placement step 34, in which the limiting fixture 312 is placed on the bottom capillary structure 22, the limiting fixture 312 having multiple limiting grooves 3121; a heat pipe insertion step 35, in which multiple heat pipes 23 are respectively placed in the heat pipe grooves 3112 on the base fixture 311, and the open ends of the heat pipes 23 are inserted into the insertion portion 212 of the base plate 21, each heat pipe 23 including a tube capillary structure 231 and a connection to... The extension capillary structure 232 of the tube capillary structure 231 is disposed inside the heat pipe 23. The extension capillary structure 232 extends out of the heat pipe 23 and extends to the receiving portion 111. The extension capillary structure 232 is placed in the limiting groove 3121 of the limiting fixture 312 and is located on the bottom capillary structure 22. In a heat pipe positioning step 36, the pressing capillary structure fixture 313 is pressed down into the limiting groove 3121 and the extension capillary structure 232 is pressed so that the extension capillary structure 232 is tightly attached to the bottom capillary structure 22. The slider fixture is then... 315 abuts against the closed end of the heat pipe 23 to prevent the heat pipe 23 from detaching from the insertion part 212 of the base plate 21, and presses the pressing block fixture 314 against the slider fixture 315 to prevent the slider fixture 315 from detaching from the heat pipe groove 3112 of the base fixture 311; and a sintering connection step 37, in which the assembly fixture 310 and the base plate 21, the bottom capillary structure 22 and the heat pipes 23 placed on the assembly fixture 310 are placed together in a heating device for heating and sintering, so that the extended capillary structure 232 and the bottom capillary structure 22 are sintered and connected as one. Understandably, the base fixture 311, the limiting fixture 312, and the capillary structure pressing fixture 313 have a limiting function and ensure the capillary connection between the extension capillary structure 232 and the bottom capillary structure 22 of the heat pipe 23. The base fixture 311, the pressing block fixture 314, the slider fixture 315, and the tube insertion part 212 have the function of restricting the left and right movement of the heat pipe 23 and ensuring that the heat pipe 23 is tightly fitted with the base plate 21.

[0034] It is worth mentioning that after the extended capillary structure 232 and the bottom capillary structure 22 are sintered together, a fixture removal step 38 is also included to remove the assembly fixture 310, so as to obtain an integral structure of the base plate 21, the bottom capillary structure 22 disposed on the base plate 21, and the heat pipes 23 inserted into the base plate 21, as shown. Figure 6 As shown. Next, a top plate setting step 39 is performed, where a top plate is placed on the base plate 21, forming a chamber with the base plate 21 to fill a working fluid. It is worth noting that a top capillary structure can be pre-set on the top plate; when the top plate is placed on the base plate 21, the top capillary structure is located within the chamber. Similarly, the aforementioned bottom capillary structure setting step 33 can be integrated with the base plate placement step 32 into one step. Alternatively, the bottom capillary structure 22 can be pre-set on the receiving portion 211 of the base plate 21, and then the base plate 21 with the bottom capillary structure 22 is placed in the base plate groove 3111 on the base fixture 311.

[0035] In this embodiment, the heat pipe grooves 3112 are respectively disposed on the left and right sides of the base plate groove 3111. Specifically, the limiting fixture 312 includes two limiting fixture units, which are respectively disposed on the left and right sides of the bottom capillary structure 22 to correspond to the heat pipe grooves 3112 disposed on the left and right sides of the base plate groove 3111. Each limiting fixture unit has five limiting grooves 3121, and each limiting groove 3121 corresponds to each heat pipe groove 3112. When the heat pipe 23 is placed in the heat pipe groove 3112 on the base fixture 311, the extended capillary structure 232 of the heat pipe 23 is disposed in the limiting groove 3121 of the limiting fixture 312 and located on the bottom capillary structure 22. The capillary structure pressing fixture 313 comprises ten pressing fixture units. Five pressing fixture units are pressed down into the five limiting grooves 3121 of the limiting fixture unit located on the left, and the other five pressing fixture units are pressed down into the five limiting grooves 3121 of the limiting fixture unit located on the right, to press the extended capillary structure 232 onto the bottom capillary structure 22. In this embodiment, the slider fixture 315 comprises ten slider fixture units, and the pressing block fixture 314 comprises ten pressing block fixture units. Each slider fixture unit is slidably disposed in the heat pipe groove 3112 of the base fixture 311 and abuts against the closed end of the heat pipe 23. Each pressing block fixture unit is pressed into the heat pipe groove 3112 of the base fixture 311 and presses down on the slider fixture unit to prevent the slider fixture unit from moving and to temporarily fix the slider fixture unit in the heat pipe groove 3112. It is understood that the number of fixture units included in the various fixtures mentioned above is not necessarily the same as the number in this embodiment. For example, the limiting fixture 312 may have only one limiting fixture unit, with five limiting grooves 3121 on the left and right sides of the limiting fixture unit. Alternatively, the five pressing fixture units of the capillary structure fixture 313 may be integrated into a left pressing fixture unit, and the other five pressing fixture units may be integrated into a right pressing fixture unit. The left pressing fixture unit can be pressed down into the five limiting grooves 3121 on the left side of the limiting fixture unit, and the right pressing fixture unit can be pressed down into the five limiting grooves 3121 on the right side of the limiting fixture unit. Such different fixture unit designs can also be implemented and applied to this utility model.

[0036] In summary, this invention, by providing an extended capillary structure on the tube capillary structure inside the heat pipe, and by having this extended capillary structure extend beyond the heat pipe and connect to the bottom capillary structure on the base plate, effectively ensures that the condensed working fluid in the heat pipe is quickly guided back to the bottom capillary structure on the base plate via the extended capillary structure, thus solving the problem of poor working fluid return. Furthermore, the tube insertion section on the base plate is provided with a tube slot, and a baffle wall is provided within the tube slot. This baffle wall serves to block the heat pipe, preventing it from entering the chamber on the base plate, and also positions the relative distance between the heat pipe and the chamber. It also provides horizontal support strength for the heat pipe, thereby enhancing the overall structural strength.

[0037] The present invention has been described in detail above. However, the above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made based on the present invention should still fall within the patent coverage of the present invention.

Claims

1. A heat dissipation module, characterized in that, Include: A base plate having a receiving portion and an insertion portion, wherein the insertion portion is disposed on at least one side of the base plate; A capillary structure is disposed on the receiving portion of the base plate; At least one heat pipe is inserted into the insertion portion of the base plate. The heat pipe includes a tube capillary structure and an extension capillary structure connected to the tube capillary structure. The tube capillary structure is disposed inside the heat pipe, and the extension capillary structure extends out of the heat pipe and connects to the base capillary structure. as well as A top plate is disposed on the bottom plate and together with the bottom plate forms a chamber for filling a working fluid.

2. The heat dissipation module as described in claim 1, characterized in that, Also includes: A capillary structure is disposed on the top plate and located within the cavity.

3. The heat dissipation module as described in claim 1, characterized in that: The extended capillary structure can be any of sintered powder, woven mesh, grid, or fiber.

4. The heat dissipation module as described in claim 1, characterized in that: The heat pipe is a circular tube with an arc-shaped protrusion at the open end. The insertion part is provided with a baffle, and the arc-shaped protrusion is engaged with the baffle.

5. The heat dissipation module as described in claim 1, characterized in that: The heat pipe can be any of the following: elliptical, quasi-elliptical, or flat.

6. The heat dissipation module as described in claim 1, characterized in that: The insertion section is provided with at least one tube slot, and a baffle wall is provided inside the tube slot to block the heat pipe.

7. The heat dissipation module as described in claim 6, characterized in that: The tube slot has a groove, and the groove and the baffle are used to prevent foreign matter from entering the chamber.

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