Bending type vapor chamber

Abstract

The utility model relates to the technical field of vapor chambers, in particular to a bent vapor chamber. The bending type uniform temperature plate comprises a bottom cover, a top cover, a metal net capillary structure, a first connecting column and a second connecting column. Wherein the edges of the bottom cover and the top cover are welded together, a vacuum cavity is formed in the bottom cover and the top cover, and a heat-conducting medium is injected into the vacuum cavity. Due to the fact that the bent portion of the vapor chamber is supported by the strip-shaped second connecting column, the second connecting column can well support the air channel, and the air channel can be effectively prevented from collapsing when the vapor chamber is bent. The first connecting column penetrates through the first receding hole of the metal net capillary structure, the first connecting column is sleeved with the copper powder ring, and the copper powder ring tightly presses the metal net capillary structure on the inner wall of the vacuum cavity. Meanwhile, the welding seam penetrating through the side of the second receding hole can be welded to the inner wall of the vacuum cavity, so that the corresponding metal net capillary structure can be tightly attached to the inner wall of the vacuum cavity, and the heat conduction effect is very good.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature averaging plates, in particular to a bent temperature averaging plate. Background Art

[0002] Vapor Chamber, also known as temperature equalizing plate or superheat conducting plate, has the same function and working principle as heat pipe. It uses the evaporation and condensation cycle of the actuating fluid enclosed in the plate-shaped cavity to achieve rapid temperature uniformity, thus achieving the functions of rapid heat conduction and heat diffusion.

[0003] The temperature spreader usually includes a top cover and a bottom cover, with a capillary structure and support columns inside, where the support columns play a role in supporting and preventing the temperature spreader from collapsing. Some temperature spreaders on the market need to be bent. The bent temperature spreader is usually very thin, and cylindrical support columns are usually used as support inside. This support structure can easily cause the airway to collapse when the temperature spreader is bent, which in turn causes the temperature spreader to be damaged and unable to work normally. In addition, after the temperature spreader is bent, the capillary structure inside it may not be in close contact with the inner wall of the temperature spreader, which will cause the thermal conductivity of the temperature spreader to decrease.

[0004] Patent No.: CN202223386783.0 A 3D curved surface temperature equalizing plate, specifically discloses "a 3D curved surface temperature equalizing plate, including an upper cover plate, a lower cover plate and a liquid absorbent core, characterized in that: the upper cover plate and the lower cover plate are relatively covered, a steam chamber is formed between the upper cover plate and the lower cover plate, the liquid absorbent core is installed in the steam chamber, the upper cover plate and the lower cover plate are made of metal composite materials, the liquid absorbent core is a foldable material with toughness, the upper cover plate and the lower cover plate are provided with corresponding bending parts, the bending parts are arc-shaped, and protrude in the opposite direction of the folding". This design uses a support column as a supporting structure, and the position of the bending part is when bent, the airway will narrow, and there is a risk of collapse. At the same time, the liquid absorbent core may not be able to fully fit with the upper cover plate and the lower cover plate, which will affect its thermal conductivity. Utility Model Content

[0005] In view of this, the utility model aims to overcome the deficiencies of the prior art, and its main purpose is to provide a bent temperature equalizing plate, which can not only effectively prevent airway collapse, but also allow the metal mesh capillary structure to fully fit the inner wall of the vacuum chamber to ensure heat conduction efficiency, thereby overcoming the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The present application provides a bent type temperature equalizing plate, comprising a bottom cover and a top cover; the bottom cover is provided with a groove, the edges of the bottom cover and the top cover are welded together, a part of the temperature equalizing plate is bent to form a bent portion, and a corresponding position of the groove forms a vacuum cavity;

[0008] The bottom wall and the top wall of the vacuum chamber are provided with a metal mesh capillary structure; the metal mesh capillary structure is penetrated by a first avoidance hole and a second long avoidance hole; the first connecting column passes through the first avoidance hole and is welded to the bottom wall and the top wall of the vacuum chamber; the copper powder ring is sleeved on the first connecting column and presses the metal mesh capillary structure;

[0009] The second avoidance hole corresponds to the position of the bending portion; the second long strip-shaped connecting column passes through the second avoidance hole and is welded to the bottom wall and the top wall of the vacuum chamber;

[0010] A welding seam runs through the side of the second avoidance hole, and the bottom wall and the top wall of the vacuum chamber corresponding to the corresponding welding seams are welded together.

[0011] Preferably, the corners of the bottom cover are provided with positioning posts; the corners of the top cover are provided with positioning openings, and the positioning posts are blocked in the positioning openings.

[0012] Preferably, the bottom cover is extended with a liquid injection groove, the top cover is extended with a sealing plate, and the sealing plate and the liquid injection groove are welded or crimped together.

[0013] Preferably, the metal mesh capillary structure is a stainless steel mesh or a copper mesh.

[0014] Preferably, the distance between the upper and lower layers of the metal mesh capillary structures is between 2-5 mm.

[0015] Preferably, a wavy metal spring sheet is sandwiched between the upper and lower layers of the metal mesh capillary structure.

[0016] Preferably, a graphene coating is provided on the outer side of the top cover.

[0017] Preferably, the length of the weld is not less than the length of the second avoidance hole, and the weld is parallel to the second avoidance hole.

[0018] Preferably, concave holes are punched out of the inner walls of the bottom cover and the top cover opposite to the first avoidance hole, and both ends of the first connecting column are inserted into the concave holes.

[0019] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that the bending type temperature equalizing plate comprises a bottom cover, a top cover, a metal mesh capillary structure, a first connecting column, and a second connecting column. The edges of the bottom cover and the top cover are welded together to form a vacuum cavity inside, and a heat-conducting medium is filled inside the vacuum cavity. Since the bending part of the temperature equalizing plate is supported by the second strip-shaped connecting column, the airway can be well supported and the collapse of the airway can be effectively prevented when bending.

[0020] The first connecting column passes through the first avoidance hole of the metal mesh capillary structure, and the copper powder ring is sleeved on the first connecting column, and the copper powder ring presses the metal mesh capillary structure tightly against the inner wall of the vacuum chamber. At the same time, the weld passing through the side of the second avoidance hole can be welded to the inner wall of the vacuum chamber, so the corresponding metal mesh capillary structure can be tightly attached to the inner wall of the vacuum chamber, and its heat conduction effect is very good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded schematic diagram of an embodiment of the utility model.

[0022] Figure 2 It is a top view schematic diagram of an embodiment of the utility model.

[0023] Figure 3 It is a test schematic diagram of an embodiment of the utility model.

[0024] Figure 4 It is a schematic diagram of the assembly of the metal mesh capillary structure of the embodiment of the utility model.

[0025] Figure 5 It is a partial structural top view of an embodiment of the utility model.

[0026] Description of the accompanying drawings:

[0027] 10, bottom cover 11, groove 12, injection groove 13, bending part 20, metal mesh capillary structure 21, first avoidance hole 22, first connecting column 23, second avoidance hole 24, second connecting column 25, welding seam 26, positioning column 27, copper powder ring 30, top cover 31, positioning port 32, sealing plate. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0029] Please refer to Figures 1 to 5 As shown, it shows the specific structure of the preferred embodiment of the utility model, which is a bent type temperature equalizing plate.

[0030] Among them, a long second connecting column 24 is set at the bending position of the temperature equalizing plate to support the vacuum chamber, which can effectively avoid the collapse of the airway at the bending position. At the same time, the copper powder ring 27 on the first connecting column 22 can press the metal mesh capillary structure 20 against the inner wall of the vacuum chamber, and at the same time, a welding seam 25 runs through the side of the second avoidance hole 23, which is welded to the bottom wall and the top wall of the vacuum chamber, so that the metal mesh capillary structure 20 at the bending position can be fully in contact with the inner wall of the vacuum chamber, and its thermal conductivity efficiency is very high.

[0031] The present application provides a bending type temperature equalizing plate, comprising a bottom cover 10 and a top cover 30; a groove 11 is provided on the bottom cover 10, the edges of the bottom cover 10 and the top cover 30 are welded together, a part of the temperature equalizing plate is bent to form a bending portion 13, and a vacuum cavity is formed at the corresponding position of the groove 11. The vacuum cavity is filled with a heat-conducting medium, and the heat-conducting medium can be a heat-conducting medium in the form of water, ethanol, acetone, etc. After the heat absorption area of ​​the bottom cover 10 is heated, the cooling medium will quickly vaporize, and then dissipate heat and cool to liquefy in the top cover 30, and then the liquefied cooling medium returns to the heat absorption area, and the cycle continues.

[0032] The bottom wall and top wall of the vacuum chamber are provided with a metal mesh capillary structure 20; the metal mesh capillary structure 20 is penetrated by a first avoidance hole 21 and a second long avoidance hole 23; the first connecting column 22 passes through the first avoidance hole 21 and is welded to the bottom wall and top wall of the vacuum chamber; the copper powder ring 27 is sleeved on the first connecting column 22 and presses the metal mesh capillary structure 20; the second avoidance hole 23 corresponds to the position of the bending part 13; the second long connecting column 24 passes through the second avoidance hole 23 and is welded to the bottom wall and top wall of the vacuum chamber. During assembly, a piece of metal mesh capillary structure 20 is provided on the bottom wall and the top wall respectively. The metal mesh capillary structure 20 can be welded to the bottom wall and the top wall of the vacuum chamber by local spot welding. The first connecting column 22 and the second connecting column 24 can be welded by any of reflow soldering, resistance welding, laser welding, and ultrasonic welding. The first connecting column 22 and the second connecting column 24 can effectively support the vacuum chamber. In particular, the long strip-shaped second connecting column 24 can effectively prevent the airway from collapsing at the bend of the temperature equalizing plate. The copper powder ring 27 set on the first connecting column 22 can press the metal mesh capillary structure 20 on the upper side against the top cover 30, and the copper powder ring 27 can press the metal mesh capillary structure 20 on the upper side against the bottom cover 10, so that the metal mesh capillary structure 20 can be firmly fixed, and the metal mesh capillary structure 20 can be fully in contact with the upper and lower inner walls of the vacuum chamber, which has a better heat conduction effect. At the same time, the copper powder ring 27 is a capillary structure, which helps to return the low-temperature cooling medium after the top cover 30 is cooled to the heat source, has a good control effect on heat flow, and is conducive to improving the thermal conductivity. Preferably, the first connecting column 22 and the second connecting column 24 are made of the same material as the top cover 30, the bottom cover 10, and the metal mesh capillary structure 20, such as copper, stainless steel, etc.

[0033] A weld 25 is passed through the side of the second avoidance hole 23, and the bottom wall and the top wall of the vacuum chamber corresponding to each of the welds 25 are welded together. The weld 25 can be welded to the bottom wall and the top wall of the vacuum chamber by laser welding or resistance welding, so that the metal mesh capillary structure 20 at the bending position can be fully close to the bottom wall and the top wall of the vacuum chamber, so that the capillary force at the bending position can be guaranteed, which guarantees the quality of heat conduction.

[0034] Preferably, the corners of the bottom cover 10 are provided with positioning posts 26; the corners of the top cover 30 are provided with positioning openings 31, and the positioning posts 26 are blocked in the positioning openings 31. When the bottom cover 10 and the top cover 30 are welded, the positioning posts 26 are blocked in the positioning openings 31, so that the position between the bottom cover 10 and the top cover 30 is fixed, thus ensuring the welding accuracy.

[0035] Preferably, the bottom cover 10 is extended with a liquid injection groove 13, and the top cover 30 is extended with a sealing plate 32, and the sealing plate 32 is welded or crimped together with the liquid injection groove 13. After the welding of the temperature-averaging plate is completed, the cooling medium is injected into the vacuum chamber from the liquid injection groove 13, and then the sealing plate 32 and the liquid injection groove 13 are welded or crimped to seal, so that the vacuum chamber can be sealed. After the vacuum chamber is sealed, the redundant sealing plate 32 and the liquid injection groove 13 can be cut off, so that a tailless temperature-averaging plate can be made, which has better integrity and saves more installation space.

[0036] Preferably, the metal mesh capillary structure 20 is a stainless steel mesh or a copper mesh. Of course, the metal mesh capillary structure 20 can also be made of other materials, and the metal mesh capillary structure 20 is not limited to two layers, but can also be multiple layers.

[0037] Preferably, the spacing between the upper and lower layers of the metal mesh capillary structure 20 is between 2-5 mm. A wavy metal spring is sandwiched between the upper and lower layers of the metal mesh capillary structure 20, which has a certain elasticity and a small width. The width of the metal spring is between 1-2 mm, and the metal spring can provide a certain support force to the upper and lower layers of the metal mesh capillary structure 20, further ensuring its close fit.

[0038] Preferably, a graphene coating is provided on the outer side of the top cover 30. Graphene is a single-layer film composed of carbon atoms, which has excellent electrical conductivity, thermal conductivity and mechanical properties. Graphene coating is a coating made by mixing graphene with other materials, which has good electrical conductivity and thermal conductivity. Therefore, graphene coating can be used as a heat dissipation coating. This design is conducive to improving the heat dissipation performance of the top cover 30 and improving its thermal conductivity. Therefore, when this temperature distribution plate coated with graphene coating is combined with a radiator, it has a better heat dissipation effect.

[0039] Preferably, the length of the weld 25 is not less than the length of the second avoidance hole 23, and the weld 25 is parallel to the second avoidance hole 23. This design is conducive to ensuring the consistency of the force direction when the temperature equalizing plate is bent, and can effectively prevent internal deformation caused by bending. At the same time, the longer the weld 25 is, the better the fixing effect of the metal mesh capillary structure 20 at the bending position will be.

[0040] Preferably, the inner walls of the bottom cover 10 and the top cover 30 facing the first avoidance hole 21 are punched to form concave holes, and the two ends of the first connecting column 22 are inserted into the concave holes. The concave holes can control the position of the first connecting column 22 during welding, which can effectively prevent the first connecting column 22 from being offset, thereby ensuring the welding quality.

[0041] In summary, the design focus of the utility model is that the bending portion 13 of the temperature equalizing plate is supported by a second long strip-shaped connecting column 24, which can effectively prevent the airway from collapsing when bending. At the same time, the copper powder ring 27 on the first connecting column 22 presses the metal mesh capillary structure 20 tightly against the inner wall of the vacuum chamber. The weld 25 running through the side of the second avoidance hole 23 is welded to the inner wall of the vacuum chamber, so that the entire metal mesh capillary structure 20 can be tightly attached to the inner wall of the vacuum chamber, and its thermal conductivity is better.

[0042] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A bent type temperature equalizing plate, characterized in that: It comprises a bottom cover and a top cover; the bottom cover is provided with a groove, the edges of the bottom cover and the top cover are welded together, a part of the temperature homogenizing plate is bent to form a bent portion, and a corresponding position of the groove forms a vacuum chamber; The bottom wall and the top wall of the vacuum chamber are provided with a metal mesh capillary structure; the metal mesh capillary structure is penetrated by a first avoidance hole and a second long avoidance hole; the first connecting column passes through the first avoidance hole and is welded to the bottom wall and the top wall of the vacuum chamber; the copper powder ring is sleeved on the first connecting column and presses the metal mesh capillary structure; The second avoidance hole corresponds to the position of the bending portion; the second long strip-shaped connecting column passes through the second avoidance hole and is welded to the bottom wall and the top wall of the vacuum chamber; A welding seam runs through the side of the second avoidance hole, and the bottom wall and the top wall of the vacuum chamber corresponding to the corresponding welding seams are welded together.

2. The bent temperature equalizing plate according to claim 1, characterized in that: Positioning posts are provided at the corners of the bottom cover; positioning openings are provided at the corners of the top cover, and the positioning posts are blocked at the positioning openings.

3. The bent temperature equalizing plate according to claim 1, characterized in that: The bottom cover is extended with a liquid injection groove, and the top cover is extended with a sealing plate, and the sealing plate is welded or crimped with the liquid injection groove.

4. The bent temperature equalizing plate according to claim 1, characterized in that: The metal mesh capillary structure is a stainless steel mesh or a copper mesh.

5. The bent temperature equalizing plate according to claim 1, characterized in that: The distance between the upper and lower layers of the metal mesh capillary structures is between 2-5 mm.

6. A bent type temperature equalizing plate according to claim 1, 4 or 5, characterized in that: A wavy metal spring is sandwiched between the upper and lower layers of the metal mesh capillary structure.

7. The bent temperature equalizing plate according to claim 1, characterized in that: A graphene coating is provided on the outer side of the top cover.

8. The bent temperature equalizing plate according to claim 1, characterized in that: The length of the weld is not less than the length of the second avoidance hole, and the weld is parallel to the second avoidance hole.

9. The bent temperature equalizing plate according to claim 1, characterized in that: The inner walls of the bottom cover and the top cover facing the first avoidance hole are punched to form concave holes, and the two ends of the first connecting column are inserted into the concave holes.

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