Vapor chamber manufacturing method and finished product thereof

Abstract

To provide a vapor chamber manufacturing method and a finished product thereof.SOLUTION: The method includes providing a stainless-steel housing having a cavity, roughening an 3D surface of the stainless-steel housing to form a roughened surface, forming a capillary structure on the roughened surface, forming a support structure by sidewall printing and baking and positioning the support structure in the cavity, injecting a working fluid into the support structure, providing an enclosed cavity and placing the stainless-steel housing in the enclosed cavity, vacuuming the enclosed cavity, and sealing the stainless-steel housing.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vapor chamber, and more particularly to a method for manufacturing a vapor chamber without a gas vent pipe and the finished product. [Background technology]

[0002] In the manufacturing process of a vapor chamber, it is often necessary to install an injection pipe (also called a degassing pipe) to inject the working fluid and perform degassing or vacuuming, and then seal the mouth of the vapor chamber by sealing the subsequent sealed end. However, installing an injection pipe increases the complexity of manufacturing, increases costs, and may occupy additional space, making it unsuitable for designing a thin vapor chamber. Summary of the Invention [Problem to be solved by the invention]

[0003] Furthermore, vapor chambers often have an internal support structure installed to provide sufficient support for the vapor chamber's internal space to prevent deformation or damage during manufacturing or use. A rationally designed internal support structure also helps evenly distribute heat to prevent overheating in certain areas, thereby improving the vapor chamber's heat dissipation performance. However, the design and manufacturing of the support structure require precise processing techniques, which increases the complexity and cost of the process.

[0004] Therefore, the present inventors believed that the above drawbacks could be improved, and as a result of extensive research, they came up with the proposal of the present invention, which effectively improves the above problems through rational design.

[0005] The present invention has been made in consideration of these circumstances, and one object of the present invention is to provide a vapor chamber manufacturing method and a finished product thereof that does not require the installation of an injection pipe, thereby reducing manufacturing complexity, reducing costs, and not occupying additional space, contributing to the design of a thinner vapor chamber.

[0006] Another object of the present invention is to provide a vapor chamber manufacturing method and a finished product thereof that maintain the structural integrity and stability of the vapor chamber by forming a support structure through 3D printing and sintering, thereby providing a sufficient support structure for the internal space of the vapor chamber to prevent deformation or destruction during manufacturing or use. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the vapor chamber manufacturing method of the present invention includes step a) of providing a stainless steel housing having a cavity, step b) of roughening the inner wall surface of the stainless steel housing to form a roughened surface, step c) of forming a capillary structure on the roughened surface, step d) of forming a support structure by 3D printing sintering and positioning the support structure in the cavity, step e) of injecting a working fluid into the support structure, step f) of providing a sealed cavity and placing the stainless steel housing with the support structure in the sealed cavity, step g) of drawing a vacuum on the sealed cavity, and step h) of sealing the stainless steel housing.

[0008] In one embodiment of the present invention, the stainless steel housing comprises a bottom plate, a frame, and a cover plate, and in step b, the wall surfaces of the bottom plate and the cover plate facing the cavity are roughened using a laser.

[0009] In one embodiment of the present invention, in step c, the capillary structure is formed by printing stainless steel powder by 3D laser sintering, and the thickness of the capillary structure is 0.01 mm or more and 0.1 mm or less.

[0010] In one embodiment of the present invention, the support structure comprises a layer and a plurality of protrusions, the plurality of protrusions being 1 cm 2 The holes are provided on both sides of the laminate so that the number of holes is between 25 and 30 per hole on average.

[0011] In one embodiment of the present invention, in step e, the working fluid is injected into the support structure, and then the support structure is placed in the cavity.

[0012] In one embodiment of the present invention, in step f, the stainless steel housing is pressed and held by a jig to be positioned.

[0013] In one embodiment of the present invention, in step g, the sealed cavity is evacuated to a vacuum at a temperature below the boiling point of the working fluid.

[0014] In one embodiment of the present invention, in step h, the stainless steel housing is sealed by laser welding.

[0015] In order to achieve the above-mentioned object, the finished vapor chamber of the present invention comprises a stainless steel housing, a capillary structure, a support structure, and a working fluid, wherein the stainless steel housing has a cavity and a roughened surface facing the cavity, the capillary structure is provided on the roughened surface, the support structure is positioned within the cavity and comprises a layer plate formed by 3D printing sintering and a plurality of protrusions laminated and printed on the layer plate, the protrusions are provided at intervals on both sides of the layer plate, and the working fluid is injected into the cavity.

[0016] In one embodiment of the present invention, each of the plurality of protrusions is a hollow cone, and a protrusion on one surface of the layer plate is connected to an adjacent protrusion on the other surface. [Effects of the Invention]

[0017] Compared to conventional techniques, the vapor chamber manufacturing method of the present invention roughens the inner wall surface of a stainless steel housing, forms a capillary structure on the roughened surface, and then forms a support structure using 3D printing and sintering. The intermediate vapor chamber product is then vacuumed and laser welded within the sealed cavity to complete the vapor chamber. The manufacturing method of the present invention eliminates the need for an injection tube, reducing the complexity and cost of the manufacturing process. Furthermore, the omission of the injection tube is advantageous for achieving a thinner vapor chamber design. Furthermore, because the support structure is formed using 3D printing and sintering, the present invention reduces the complexity and cost of the manufacturing process, does not require additional space, and contributes to a thinner design. Furthermore, forming the internal support structure using 3D printing and sintering simplifies the design and manufacturing process of the support structure, reducing the complexity and cost of the manufacturing process. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a flowchart illustrating a method for manufacturing a vapor chamber according to an embodiment of the present invention. [Figure 2] 1 is an exploded perspective view showing a completed vapor chamber according to one embodiment of the present invention. FIG. [Figure 3] 1 is an external perspective view showing a support structure according to the present invention; [Figure 4] 2 is a schematic diagram showing how the working fluid according to the present invention is injected into the support structure; FIG. [Figure 5] 10 is a schematic diagram showing a state of pressing and holding by a jig according to the present invention. FIG. [Figure 6] 1 is a schematic diagram showing a vacuuming step in a vapor chamber manufacturing method according to one embodiment of the present invention. [Figure 7]3 is a schematic diagram showing a welding step in a vapor chamber manufacturing method according to one embodiment of the present invention. FIG. [Figure 8] 1 is an external perspective view showing a completed vapor chamber according to one embodiment of the present invention. FIG. [Figure 9] 1 is an assembled cross-sectional view of a completed vapor chamber according to one embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0019] The present invention will be described below through embodiments of the invention, but the following embodiments do not limit the scope of the invention according to the claims. Furthermore, not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention.

[0020] Referring to Figure 1, there is shown a flowchart illustrating a vapor chamber manufacturing method according to one embodiment of the present invention. The present invention provides a vapor chamber manufacturing method without an injection pipe, which eliminates the need to inject a working fluid through an injection pipe (gas vent pipe) or to employ processes such as gas venting or evacuation during the vapor chamber manufacturing process. The present invention also provides a finished vapor chamber manufactured according to the vapor chamber manufacturing method of Figure 1.

[0021] 2, an exploded perspective view of a completed vapor chamber according to one embodiment of the present invention is shown, and a method for manufacturing the vapor chamber shown in FIG. 1 will be described below. The method for manufacturing the vapor chamber according to the present invention includes step a) of providing a stainless steel housing 10 having a cavity 100, and step b) of roughening the inner wall surface of the stainless steel housing 10 to form a roughened surface.

[0022] In this embodiment, the stainless steel housing 10 includes a bottom plate 11, a frame 12, and a cover plate 13. The frame 12 is disposed between the bottom plate 11 and the cover plate 13, and a cavity 100 is formed between the bottom plate 11 and the cover plate 13. In step b, the present invention roughens the wall surfaces of the bottom plate 11 and the cover plate 13 facing the cavity 100 using a laser processing method, and then forms a capillary structure 14 on the roughened surface based on step c. Specifically, the capillary structure 14 is formed by printing stainless steel powder using 3D laser sintering, and the thickness of the capillary structure 14 is 0.01 mm or more and 0.1 mm or less.

[0023] Further, based on step d, the present invention forms the support structure 20 by 3D printing and sintering, and positions the support structure 20 in the cavity 100. Referring to FIG. 3, an external perspective view of the support structure according to the present invention is shown. In this embodiment, the support structure 20 includes a layer 21 and a plurality of protrusions 22. In the support structure 20 of the present invention, a 1 cm 2 cm 3 cm 4 cm 5 cm 6 cm 7 cm 8 cm 9 cm 10 cm 11 cm 12 cm 13 cm 14 cm 15 cm 16 cm 17 cm 18 cm 19 cm 20 cm 21 cm 22 cm 23 cm 24 cm 25 cm 26 cm 27 cm 28 cm 29 cm 30 cm 31 cm 32 cm 33 cm 34 cm 35 cm 36 cm 37 cm 38 cm 39 cm 40 cm 41 cm 42 cm 43 cm 44 cm 45 cm 46 cm 47 cm 48 cm 49 cm 50 cm 51 cm 52 cm 53 cm 54 cm 55 cm 56 cm 57 cm 58 cm 59 cm 60 cm 61 cm 62 cm 63 cm 64 cm 65 cm 66 cm 67 cm 68 cm 69 cm 69 cm 70 cm 71 cm 72 cm 73 cm 74 cm 75 cm 76 cm 77 cm 78 cm 79 ... 2 An average of 25 to 30 protrusions 22 are provided per layer. Specifically, each protrusion 22 is a hollow cone. A protrusion 22 on one surface of the layer 21 is connected to an adjacent protrusion 22 on the other surface. Between adjacent protrusions 22, through holes are provided to promote gas flow.

[0024] FIG. 4 is a schematic diagram showing how the working fluid according to the present invention is injected into the support structure, and the vapor chamber manufacturing method of FIG. 1 will be described below. The vapor chamber manufacturing method according to the present invention further includes step e of injecting the working fluid 30 into the support structure 20. In this embodiment, the working fluid 30 is first injected into the support structure 20, and then placed together with the support structure 20 in the cavity 100. Alternatively, the working fluid 30 can be injected into the cavity 100 after the support structure 20 is placed in the stainless steel housing 10. The bottom plate 11 can be placed horizontally on the processing table 40 in advance, and the frame 12 can be placed thereon to form the cavity 100, which facilitates the subsequent placement of the support structure 20.

[0025] 5, there is shown a schematic diagram illustrating the manner in which the housing 10 is pressed and held by a jig according to the present invention. After the working fluid 30 is injected into the cavity 100, the cover plate 13 is placed over the frame 12 to seal the cavity 100. In practice, the stainless steel housing 10 is pressed and held in position by the jig 50.

[0026] Referring to Figure 6, a schematic diagram showing the evacuation process in a vapor chamber manufacturing method according to one embodiment of the present invention is shown, and the vapor chamber manufacturing method of Figure 1 will be described below. The vapor chamber manufacturing method according to the present invention further includes step f of providing a sealed cavity 60 and placing a stainless steel housing 10 provided with a support structure 20 in the sealed cavity 60. The stainless steel housing 10 is placed on a processing table 40 and is pressed and held by a jig 50. The vapor chamber manufacturing method according to the present invention also includes step g of evacuating the sealed cavity 60 using a vacuum device 70, thereby creating a vacuum in the sealed cavity 60 and the cavity 100 of the stainless steel housing 10.

[0027] The vacuum device 70 may be a vacuum pump connected to the sealed cavity 60, and is used to evacuate the sealed cavity 60. The vacuum treatment in step g is performed at a temperature below the boiling point of the working fluid 30.

[0028] 7 is a schematic diagram showing a welding process in a vapor chamber manufacturing method according to one embodiment of the present invention, and will be described in conjunction with the vapor chamber manufacturing method of FIG. 1. The vapor chamber manufacturing method according to the present invention further includes step h of sealing the stainless steel housing 10. The present invention positions the support structure 20 by laser welding to the surface of the stainless steel housing 10. The present invention also joins the bottom plate 11, frame 12, and cover plate 13 by laser welding to the periphery of the stainless steel housing 10, maintaining the vacuum and hermeticity of the cavity 100 and completing the vapor chamber.

[0029] 8, there is shown a perspective view of the exterior of a finished vapor chamber according to one embodiment of the present invention. The present invention uses the vapor chamber manufacturing method described above to manufacture the finished vapor chamber 1. Because the finished vapor chamber 1 does not use an injection pipe (vent pipe) in the process, there are no injection pipes (vent pipes) or traces of subsequent processing on the exterior of the finished product.

[0030] 9, there is shown an assembled cross-sectional view of a completed vapor chamber according to one embodiment of the present invention. The completed vapor chamber 1 according to the present invention comprises a stainless steel housing 10, a capillary structure 14, a support structure 20, and a working fluid 30. The stainless steel housing 10 has a cavity 100 and includes a roughened surface 101 facing the cavity.

[0031] Furthermore, the support structure 20 is positioned within the cavity 100. The support structure 20 includes a layer plate 21 formed by a 3D printing and sintering method, and a plurality of protrusions 22 laminated and printed on the layer plate 21. These protrusions 22 are provided at intervals on both sides of the layer plate 21. Furthermore, a working fluid 30 is injected into the cavity 100.

[0032] Specifically, the stainless steel housing 10 includes a bottom plate 11, a frame 12, and a cover plate 13. The support structure 20 includes a layer plate 21 and a plurality of protrusions 22. Each protrusion 22 is a hollow cone, and a protrusion 22 on one side of the layer plate 21 is connected to an adjacent protrusion 22 on the other side. The protrusion 22 on one side of the support structure 20 abuts against the bottom plate 11, and the protrusion 22 on the other side abuts against the cover plate 13.

[0033] As a result, the finished vapor chamber 1 according to the present invention does not have an injection pipe, which reduces the complexity and cost of the manufacturing process and also does not require additional space, making it suitable for slim vapor chamber designs. Furthermore, in the present invention, the internal support structure is formed using a 3D printing and sintering method, which simplifies the design and manufacturing process of the support structure and reduces the complexity and cost of the manufacturing process.

[0034] Although the embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like are also included within the scope that does not deviate from the gist of the present invention. [Explanation of symbols]

[0035] 1 Completed Vapor Chamber 10 Stainless steel housing 100 cavities 101 Rough surface 11 Bottom plate 12 frames 13 Cover plate 14 Capillary structure 20 Support structure 21 layer plate 22 Convex part 30 Working Fluid 40 Processing Table 50 Jig 60 Sealed Cavity 70 Vacuum equipment

Claims

1. Step a) providing a stainless steel housing having a cavity; Step b: roughening the inner wall surface of the stainless steel housing to form a rough surface; Step c) forming a capillary structure on the roughened surface; Step d: forming a support structure by 3D printing sintering and positioning the support structure within the cavity; Step e) injecting a working fluid into said support structure; Step f) providing a sealed cavity and placing the stainless steel housing with the support structure thereon into the sealed cavity; Step g: drawing a vacuum on the sealed cavity; and step h. sealing the stainless steel housing. Vapor chamber manufacturing method.

2. The stainless steel housing includes a bottom plate, a frame, and a cover plate; The vapor chamber manufacturing method according to claim 1 , wherein in step b, the wall surfaces of the bottom plate and the cover plate facing the cavity are roughened by a laser.

3. In the step c, the capillary structure is formed by printing stainless steel powder by 3D laser sintering; The vapor chamber manufacturing method according to claim 1 , wherein the thickness of the capillary structure is 0.01 mm or more and 0.1 mm or less.

4. the support structure comprises a layer and a plurality of protrusions; The plurality of protrusions are 1 cm ２ The vapor chamber manufacturing method according to claim 1, wherein the number of the particles is set on both sides of the layer plate so that the number of the particles is an average of 25 to 30 per layer.

5. The vapor chamber manufacturing method according to claim 1 , wherein in step e, the working fluid is injected into the support structure, and then the support structure is placed in the cavity.

6. 2. The vapor chamber manufacturing method according to claim 1, wherein in step f, the stainless steel housing is positioned by being pressed and held with a jig.

7. The vapor chamber manufacturing method according to claim 1 , wherein in step g, the sealed cavity is evacuated at a temperature below the boiling point of the working fluid.

8. 2. The vapor chamber manufacturing method according to claim 1, wherein in step h, the stainless steel housing is sealed by laser welding.

9. A finished vapor chamber manufactured by the vapor chamber manufacturing method according to any one of claims 1 to 8, a stainless steel housing having a cavity and a roughened surface facing the cavity; a capillary structure provided on the rough surface; A support structure including a layer plate formed by 3D printing and sintering and positioned within the cavity, and a plurality of protrusions laminated and printed on the layer plate, the plurality of protrusions being spaced apart on both sides of the layer plate; a working fluid injected into the cavity; Vapor chamber completed.

10. 10. A finished vapor chamber as described in claim 9, wherein each of the plurality of protrusions is a hollow cone, and a protrusion on one side of the layer plate is connected to an adjacent protrusion on the other side.

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