A copper pipe with thread groove

Abstract

The utility model relates to heat pipe technical field especially relates to a guide copper pipe containing thread groove, its technical scheme includes: main part pipe and pipe head, the pipe head sets up in the end of main part pipe, the inner wall of pipe head is equipped with screw mouth for cooperating with external connecting piece, the inner wall of main part pipe is equipped with the groove of helical shape distribution along the axial direction, the groove bottom is processed with capillary texture for enhancing the stability of uniform spread and heat transfer process of working medium liquid film, the utility model discloses a copper pipe inner wall sets up helical groove and capillary texture, effectively promotes working medium reflux capacity, wettability and overall heat transfer performance, at the same time, high -purity copper material and corrosion -resistant plating layer guarantee the stability and durability of device in long -term operation.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a flow guide copper tube with threaded grooves. Background Technology

[0002] The common liquid wick structures of existing heat pipes or flow guide copper tubes mainly include sintered powder type, metal wire mesh type and smooth groove type.

[0003] Among them, sintered powder wicks have strong capillary pressure, enabling rapid recirculation of the working fluid. However, they suffer from high contact thermal resistance between the sintered layer and the tube wall, high liquid recirculation resistance, relatively fragile structure, and large overall weight, which are not conducive to the lightweight and high-reliability application of heat pipes. Metal mesh wicks can improve liquid recirculation, but the addition of the mesh significantly increases the weight of the tube. They also have high requirements for the processing environment, complicated operation procedures, high radial heat transfer resistance, and high cost. Therefore, their use has been gradually reduced in engineering applications. Smooth groove wicks are suitable for thin and small electronic devices due to their light weight, thin tube wall, no additional contact thermal resistance, and fast thermal response. However, their grooves are mostly parallel straight grooves, with limited capillary pressure. When installed at an angle or vertically, the recirculation capacity of the working fluid is insufficient, and liquid recirculation stagnation or even drying out can easily occur, affecting thermal conductivity and operational stability.

[0004] To address this issue, we propose a flow guide copper tube with threaded grooves. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a flow guide copper tube with threaded grooves.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flow guide copper tube with threaded grooves, comprising a main tube and a tube head, wherein the tube head is disposed at the end of the main tube, and the inner wall of the tube head is provided with a threaded opening for cooperating with an external connector;

[0007] The inner wall of the main tube is provided with spirally distributed grooves along the axial direction. The bottom of the grooves is processed with capillary texture to enhance the uniform spreading of the working fluid film and the stability during the heat transfer process.

[0008] Preferably, the grooves are spirally distributed along the length of the main tube, and the spiral angle of the grooves is between 10 degrees and 45 degrees, so as to take into account both the liquid backflow driving force and the flow resistance.

[0009] Preferably, the cross-section of the trench is trapezoidal, and the bottom of the trench is provided with arc transition sections on both sides to reduce the resistance to metal flow and improve the liquid guiding effect.

[0010] Preferably, the capillary texture is a fine groove structure, which is used to enhance the wettability of the working fluid on the inner wall of the tube and increase the capillary pressure. The capillary texture and the spiral groove work together to form a uniform liquid film of the working fluid in the evaporation section and accelerate the liquid reflux in the condensation section, thereby reducing local drying phenomenon and improving heat transfer efficiency.

[0011] Preferably, the main tube is made of high-purity copper, and the inner wall of the main tube is covered with a corrosion-resistant coating. The corrosion-resistant coating is a nickel-chromium composite coating, which is used to reduce the risk of corrosion under long-term action of the working fluid. The corrosion-resistant coating is formed by electroplating and maintains its integrity in the grooves and capillary textures to avoid uneven liquid film distribution caused by local corrosion.

[0012] Preferably, the tube head and the main tube are integrally formed, and the screw thread is a standardized internal thread to enable universal connection with external devices.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] During use, the spiral grooved guide copper tube of this utility model has a spiral groove processed on the inner wall of the main tube. Compared with the traditional straight groove structure, the spiral groove can guide the working fluid to spiral back along the groove under the condition of the heat pipe being tilted or vertical, thereby significantly improving the working fluid backflow capacity and heat conduction efficiency.

[0015] Capillary textures are set at the bottom of the trench to enhance the wettability of the working fluid to the inner wall of the tube through the capillary action of the surface microstructure, so that the working fluid liquid film is evenly spread, effectively reducing local drying phenomenon and ensuring stable heat transfer in the evaporation section. The cross-section of the trench adopts a trapezoidal structure and rounded transition sections are set on both sides of the bottom of the trench, which can reduce the resistance during the flow of the working fluid, improve the liquid guiding effect, and improve the overall heat transfer performance.

[0016] The main tube is made of high-purity copper and the inner wall is covered with a corrosion-resistant coating. The coating covers the grooves and capillary textures, ensuring that it can maintain stable performance in long-term operation and complex working fluid environments, avoiding uneven liquid film distribution caused by corrosion, and extending service life. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the main tube structure of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the pipe head structure of this utility model;

[0020] Figure 4 For the present utility model Figure 2 Schematic diagram of the cross-sectional structure at point A in the middle.

[0021] Figure label:

[0022] 1. Main tube; 2. Tube end; 201. Threaded end; 3. Groove; 301. Capillary texture. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] like Figures 1-4 As shown, the present invention proposes a flow guide copper tube with threaded grooves, including a main tube 1, a tube head 2, a groove 3 and a capillary texture 301. The main tube 1 is made of high-purity copper, and the inner wall is covered with a corrosion-resistant coating to improve corrosion resistance and long-term stability.

[0026] The pipe head 2 is integrally formed and set at one end of the main pipe 1. The pipe head 2 is provided with a screw 201, which is a standardized internal thread interface, which facilitates tight connection with external devices.

[0027] Example 2

[0028] like Figures 1-4 As shown, the present invention proposes a flow-guiding copper tube with threaded grooves. Compared with Embodiment 1, this embodiment further includes: the inner wall of the main tube 1 is processed with multiple grooves 3, and each groove 3 is spirally distributed along the axial direction of the main tube 1. The spiral grooves 3 form a spiral guiding channel in structure. When the working fluid is subjected to capillary force and gravity inside the main tube 1, it can gradually climb or flow down along the spiral path, thereby avoiding the problem of poor or stagnant return of the working fluid in the straight groove. This allows the working fluid to complete the return smoothly even when the heat pipe is in an inclined or even vertical state, greatly improving the return capacity of the working fluid and the overall heat conduction efficiency.

[0029] The cross-section of the trench 3 is trapezoidal, with rounded transition sections on both sides of the bottom. The trapezoidal cross-section can increase the liquid storage space of the trench 3 and ensure sufficient working fluid volume. At the same time, the rounded transition sections effectively eliminate the sharp corner structure of the trench 3, making it less likely for the working fluid to form eddies or stagnant zones during flow, thereby reducing flow resistance and improving fluid dynamics characteristics. Therefore, this design significantly reduces the energy loss of the liquid at corners while maintaining the liquid's flow guiding capacity.

[0030] A capillary texture 301 is provided at the bottom of the trench 3. The capillary texture 301 forms a micro-capillary channel structure to enhance the wettability and spreadability of the working fluid, so that the working fluid liquid film is evenly distributed in the tube, reducing the risk of local drying and dry burning. Specifically, these micro-channels can actively adsorb the working fluid liquid through capillary action, so that it can quickly flow back even under unfavorable gravity conditions. The capillary texture 301 increases the contact area between the liquid and the solid surface, enhances wettability, and allows the working fluid liquid film to be evenly spread on the surface of the trench 3. This not only reduces the risk of local drying in the evaporation section, but also allows the working fluid to form a stable and continuous liquid film layer on the tube wall.

[0031] When the flow guide copper tube is operating under high heat flux density conditions, the capillary force generated by the capillary texture 301 and the return path provided by the spiral groove 3 work together to ensure the continuous and stable circulation of the working fluid, avoiding dry burning or a sharp decline in heat transfer performance due to liquid film rupture, thereby improving the reliability and safety of the device under complex operating conditions.

[0032] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A flow guide copper pipe with threaded grooves, comprising a main pipe (1) and a pipe head (2), characterized in that: The pipe head (2) is located at the end of the main pipe (1), and the inner wall of the pipe head (2) is provided with a threaded opening (201) for use with external connectors; The inner wall of the main tube (1) is provided with spirally distributed grooves (3) along the axial direction. The bottom of the grooves (3) is processed with capillary textures (301) to enhance the uniform spreading of the working fluid film and the stability during the heat transfer process.

2. The flow guide copper tube with threaded grooves according to claim 1, characterized in that: The groove (3) is spirally distributed along the length of the main tube (1), and the spiral angle of the groove (3) is between 10 degrees and 45 degrees, so as to take into account both the liquid backflow driving force and the flow resistance.

3. A flow guide copper tube with threaded grooves according to claim 1, characterized in that: The groove (3) has a trapezoidal cross section, and the bottom of the groove (3) is provided with arc transition sections on both sides to reduce the resistance to metal flow and improve the liquid guiding effect.

4. A flow-guiding copper tube with threaded grooves according to claim 1, characterized in that: The capillary texture (301) is a fine groove structure used to enhance the wettability of the working fluid on the inner wall of the tube and increase capillary pressure. The capillary texture (301) works in synergy with the spiral groove (3) to form a uniform liquid film in the evaporation section and accelerate liquid reflux in the condensation section, thereby reducing local drying and improving heat transfer efficiency.

5. A flow guide copper tube with threaded grooves according to claim 1, characterized in that: The main tube (1) is made of high-purity copper. The inner wall of the main tube (1) is covered with a corrosion-resistant coating. The corrosion-resistant coating is a nickel-chromium composite coating, which is used to reduce the risk of corrosion under long-term action of the working fluid. The corrosion-resistant coating is formed by electroplating and maintains its integrity at the groove (3) and capillary texture (301) to avoid uneven distribution of liquid film caused by local corrosion.

6. A flow-guiding copper tube with threaded grooves according to claim 1, characterized in that: The tube head (2) and the main tube (1) are integrally formed, and the screw (201) is a standardized internal thread so as to achieve universal connection with external devices.

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