A foldable heat pipe and its preparation method

Abstract

The present invention relates to the technical field of heat-conducting products, and particularly to a foldable heat pipe and a preparation method thereof. The foldable heat pipe includes a plate body, which includes a substrate and a copper mesh. A coating layer is attached to the copper mesh in a coating manner, and substrates are provided on both the upper and lower sides of the copper mesh. The two substrates are connected to each other to form a vacuum environment; the coating layer uses a microencapsulated phase change material. The foldable heat pipe provided by the present invention is divided into three layers. The upper and lower substrates are made of stainless steel SUS301, and the middle layer is a copper mesh. After vacuumization, the solid phase change material will quickly move to form superconductivity only after being heated in a vacuum state, optimizing the traditional liquid injection production process method. The substrate uses SUS301 stainless steel elastic metal, solving the bending process. Since they are all die-cut coils, welding and vacuumization can be fully automated, with high output and low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of heat conduction products, and particularly to a foldable vapor chamber and a preparation method thereof. Background Art

[0002] The Vapor Chamber vacuum chamber heat pipe is similar to a heat pipe in principle, but different in the conduction method. The heat pipe conducts heat in a one-dimensional linear manner, while the heat in the vacuum chamber heat pipe is conducted on a two-dimensional plane, so the efficiency is higher. In the process of the traditional production process of the vapor chamber, liquid injection is carried out through the liquid injection production process, and the process is complex and time-consuming and laborious.

[0003] Therefore, it is necessary to provide a new foldable vapor chamber and a preparation method thereof to solve the above technical problems. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a foldable vapor chamber and a preparation method thereof.

[0005] The foldable vapor chamber provided by the present invention includes a plate body, the plate body includes a substrate and a copper mesh, a coating layer is attached to the copper mesh in a coating manner, and substrates are provided on both the upper and lower sides of the copper mesh, and the two substrates are connected to each other to form a vacuum environment;

[0006] The coating layer uses a microcapsule phase change material.

[0007] Preferably, the edges of the upper and lower substrates of the copper mesh are fixedly connected by welding, and a sealing position is provided at the welding position of the upper and lower substrates.

[0008] Preferably, the substrate uses a stainless steel material with a SUS301-SH hardness and a thickness of 0.06 mm.

[0009] Preferably, the microcapsule phase change material is a micron-sized capsule phase change material, and the micron-sized capsule phase change material becomes liquid after being heated to 37 degrees and changes to a solid state below 37 degrees.

[0010] Preferably, the copper mesh uses a superconducting copper material.

[0011] A preparation method for manufacturing a foldable vapor chamber is as follows:

[0012] Step 1: Prepare a copper mesh mold using a superconducting copper material;

[0013] Step 2: Cut the copper mesh mold prepared in Step 1 according to the product shape to produce a copper mesh;

[0014] Step 3: Heat the micron-sized capsule phase change material to 37 degrees to become liquid and then coat it on the copper mesh;

[0015] Step 4: After obtaining the copper mesh coated with micron-sized capsule phase change material, bond two layers of substrates to both sides of the copper mesh, and weld the peripheries of the upper and lower substrates. Meanwhile, leave a position as the sealing position.

[0016] Step 5: Evacuate the air in the gap between the two substrates through the sealing position to create a vacuum inside, and then seal the sealing position.

[0017] Preferably, in Step 3, the liquid phase change material is coated on the copper mesh and waits until it returns to the solid phase change material at room temperature.

[0018] Compared with the related technologies, the foldable heat pipe provided by the present invention and its preparation method have the following beneficial effects:

[0019] The plate body of the present invention is divided into three layers in total. The upper and lower substrates are made of stainless steel SUS301, and the middle layer is a copper mesh (coated with micron-sized capsule phase change material). The peripheries of the upper and lower substrates are welded, and a position is left as the sealing position. Air is evacuated through the sealing position, and after forming a vacuum, it is sealed. This enables the solid phase change material to move rapidly to form superconductivity only when heated under a vacuum state, optimizing the traditional liquid injection production process method. The substrate uses SUS301 stainless steel elastic metal, solving the bendable process. In the actual production process, the superconducting copper is made into a copper mesh through laser engraving, and the phase change liquid raw material is coated on the copper mesh, which is solid at room temperature and convenient for die-cutting production. Since they are all die-cut rolls, welding and vacuuming can be fully automated, with high output and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a preferred embodiment of the foldable heat pipe provided by the present invention;

[0021] Figure 2 is Figure 1 a schematic structural diagram of the folded foldable heat pipe shown in;

[0022] Figure 3 is Figure 1 a schematic structural diagram of the foldable heat pipe shown in;

[0023] Figure 4 is Figure 3 a schematic enlarged structural diagram of the copper mesh shown in and point A on the copper mesh.

[0024] Reference numerals in the figures: 100, plate body; 110, substrate; 120, copper mesh; 121, coating layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the objectives, technical solutions, and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] The specific implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0027] Please refer to Figures 1 to 4 , a foldable heat pipe provided by an embodiment of the present invention, the foldable heat pipe includes: a plate body 100, and the plate body 100 includes a substrate 110 and a copper mesh 120. A coating layer 121 is attached to the copper mesh 120 in a coating manner, and the coating layer 121 uses a microcapsule phase change material. Substrates 110 are provided on both the upper and lower sides of the copper mesh 120, and the two substrates 110 are connected to each other to form a vacuum environment.

[0028] Specifically, the edges of the upper and lower layers of substrates 110 of the copper mesh 120 are fixedly connected by welding, and a sealing position is provided at the welding position of the upper and lower layers of substrates 110. The substrate 110 is made of a stainless steel material with a hardness of SUS301-SH and a thickness of 0.06 mm. The microcapsule phase change material is a micron-level capsule phase change material, and the micron-level capsule phase change material becomes liquid after being heated to 37 degrees and changes to a solid state below 37 degrees. The copper mesh 120 uses a superconducting copper material.

[0029] It should be noted that: in this application, the microcapsule phase change material is directly used. After being heated to 37 degrees, it becomes liquid and is then coated on the copper mesh 120. Subsequently, when it cools below 37 degrees, it changes to a solid state, so there is no need to inject liquid into the cavity formed by the two substrates 110. Moreover, the copper mesh 120 itself is a mesh structure, enabling the phase change material to adhere well;

[0030] It should also be noted that: the copper mesh 120 is located in the cavity formed by the two substrates 110. In a vacuum state, the solid phase change material will quickly move to form superconductivity when heated, achieving heat transfer, and its thermal conductivity is 6000 W / M.K.

[0031] The preparation method of the foldable heat pipe is as follows:

[0032] Step 1: Prepare a copper mesh mold using a superconducting copper material;

[0033] Step 2: Cut and produce the copper mesh mold prepared in Step 1 into a copper mesh 120 according to the product shape;

[0034] Step 3: Heat the micron-level capsule phase change material to 37 degrees to change it to a liquid state and then coat it on the copper mesh 120;

[0035] Step 4: After obtaining the copper mesh 120 coated with micro-scale capsule phase change material, attach two layers of substrates 110 to both sides of the copper mesh 120, and weld the peripheries of the upper and lower layers of substrates 110. Meanwhile, leave a position as the sealing position.

[0036] Step 5: Evacuate the air in the gap between the two layers of substrates 110 through the sealing position to form a vacuum inside, and then seal the sealing position.

[0037] Among them, in Step 3, the liquid phase change material is coated on the copper mesh 120 and waits until it returns to the solid phase change material at room temperature, which is convenient for the die-cutting production of the copper mesh.

[0038] It should be noted that: The plate body 100 is divided into three layers in total. The upper and lower layers of substrates 110 are made of stainless steel SUS301, and the middle layer is a copper mesh 120 (coated with micro-scale capsule phase change material). The peripheries of the upper and lower layers of substrates 110 are welded, and a position is left as the sealing position. The air is evacuated through the sealing position, and after forming a vacuum, it is sealed. In this way, the solid phase change material will move rapidly to form superconductivity only after being heated in a vacuum state, optimizing the traditional liquid injection production process method. The substrate 110 uses SUS301 stainless steel elastic metal, solving the process of being bendable. In the actual production process, the superconducting copper is made into a copper mesh through laser engraving, and the phase change liquid raw material is coated on the copper mesh, which is solid at room temperature and convenient for die-cutting production. Because they are all die-cut rolls, welding and vacuuming can be fully automated production, with high output and low cost.

[0039] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A foldable heat pipe, characterized in that, It includes a plate body (100), and the plate body (100) includes a substrate (110) and a copper mesh (120). A coating layer (121) is attached to the copper mesh (120) in a coating manner, and substrates (110) are provided on both the upper and lower sides of the copper mesh (120). The two substrates (110) are connected to each other to form a vacuum environment; The coating layer (121) uses a microcapsule phase change material; The edges of the upper and lower substrates (110) of the copper mesh (120) are fixedly connected by welding, and a sealing position is provided at the welding position of the upper and lower substrates (110). The substrate (110) is made of a stainless steel material with a SUS301 - SH hardness and a thickness of 0.06 mm. The microcapsule phase change material is a micron - level capsule phase change material, and the micron - level capsule phase change material becomes liquid when heated to 37 degrees and changes to solid when the temperature is lower than 37 degrees. The copper mesh (120) uses a superconducting copper material.

2. A preparation method for manufacturing the foldable heat pipe according to claim 1, characterized in that, The specific method is as follows: Step 1: Prepare a copper mesh mold using a superconducting copper material; Step 2: Cut and produce the copper mesh mold prepared in Step 1 into a copper mesh (120) according to the product shape; Step 3: Heat the micron - level capsule phase change material to 37 degrees to become liquid and then coat it on the copper mesh (120); Step 4: After obtaining the copper mesh (120) coated with the micron - level capsule phase change material, attach two substrates (110) to both sides of the copper mesh (120), and weld the peripheries of the upper and lower substrates (110), and leave a position as the sealing position; Step 5: Pump out the air in the gap between the two substrates (110) through the sealing position to form a vacuum inside and then seal the sealing position.

3. The preparation method of the foldable heat pipe according to claim 2, wherein In Step 3, the liquid phase change material is coated on the copper mesh (120) and waits until it returns to the solid - state phase change material at room temperature.

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