Efficient heat absorption evaporation copper pipe and heat dissipation method
By setting grooves and liquid absorbent cores on the inner wall of the heat pipe shell, the problem of poor capillary effect of existing heat pipes is solved, better circulation of working liquids is achieved, and the heat transfer performance of the heat pipe is improved.
Patent Information
- Application Number
- CN202411697946.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-02-07
AI Technical Summary
The existing heat pipe has a single structure and poor capillary effect, which leads to poor circulation of working liquids inside the heat pipe, and cannot effectively improve the heat transfer performance of the heat pipe.
Design an efficient heat-absorbing evaporation copper tube, adopting a structure where grooves and liquid absorbing core are arranged in the inner wall of the tube shell. Through the combination of grooves and liquid absorbing core, the return speed of working liquid is increased, capillary action is enhanced, and the liquid can be better Circulate in the ground.
By increasing the return speed of the working liquid and enhancing the capillary effect, better circulation of the liquid inside the heat pipe is achieved, the heat transfer performance of the heat pipe is improved, and the effect of efficient heat transfer is achieved.
Smart Images
Figure CN119394070A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of copper tubes, in particular to a high-efficiency heat-absorbing evaporation copper tube and a heat dissipation method. Background Art
[0002] Heat pipe is a kind of efficient heat transfer element, whose working principle is based on the evaporation and condensation of liquid. Due to its efficient heat transfer performance, heat pipe is widely used in various fields, such as aerospace, military industry, electric power, metallurgy, chemical industry, machinery, etc.
[0003] In order to enhance the capillary effect, the existing heat pipes usually adopt a metal powder inner wall or a groove structure. The structures of these two heat pipes are relatively simple and the capillary effect is poor, so that the working liquid cannot circulate better inside the heat pipe, and the reflux speed of the working liquid inside the heat pipe cannot be effectively increased, thereby failing to improve the heat transfer performance of the heat pipe. To address this problem, a high-efficiency heat-absorbing evaporation copper tube and a heat dissipation method are now provided. Summary of the invention
[0004] The object of the present invention is to provide a high-efficiency heat-absorbing evaporation copper tube and a heat dissipation method to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above object, the present invention provides the following technical solutions: A high-efficiency heat-absorbing evaporation copper tube comprises a tube shell, a groove, a liquid wick and a central channel. The groove is opened on the inner wall of the tube shell, the liquid wick covers the side of the groove away from the tube shell, and the middle of the liquid wick forms a central channel for the flow of working liquid.
[0006] As a further solution of the present invention: the groove and the central channel are both arranged along the length direction of the tube shell, and the cross-sectional shape of the tube shell is circular.
[0007] As a further solution of the present invention: the liquid absorbent core forms a plurality of evenly distributed through holes inside the tube shell, and the through holes are communicated with the central channel.
[0008] As a further solution of the present invention: the groove is integrally formed on the inner wall of the tube shell.
[0009] As a further solution of the present invention: the liquid wick is copper powder.
[0010] As a further solution of the present invention: the tube shell includes a heat absorption section, a heat insulation section, and a condensation section, and the heat absorption section, the heat insulation section, and the condensation section are connected in sequence.
[0011] As a further solution of the present invention: the diameter of one end of the tube shell away from the condensation section is smaller.
[0012] As a further solution of the present invention: the liquid wick includes fine powder and coarse powder, the fine powder is located in the heat absorption section and covers the inner wall of the groove, and the coarse powder is located in the insulation section and the condensation section and covers the inner wall of the groove.
[0013] As a further solution of the present invention: the fine powder is located in the heat absorption section and covers the inner wall of the groove, and the coarse powder is located in the heat insulation section and covers the inner wall of the groove.
[0014] A heat dissipation method for a high-efficiency heat-absorbing evaporation copper tube comprises the following steps: S1, heat absorption: When the heat absorbing section is heated, the working fluid inside the central channel is heated, absorbs the heat, and evaporates into steam; S2. Steam transmission: The steam flows to the condensation section under the action of a small pressure difference. In this process, the steam transfers heat to the condensation section. S3, heat release: The steam is cooled by the heat dissipation components outside the condensation section and condensed into liquid. During this process, the steam releases heat at the condensation section and turns into liquid. S4, loop: The condensed liquid flows back to the heat absorption section through the capillary force provided by the wick. After the liquid flows back to the heat absorption section, it is evaporated again to form new steam and continue to transfer heat. This process is repeated to achieve cyclic heat dissipation.
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. A high-efficiency heat-absorbing evaporation copper tube and heat dissipation method of the present invention, by arranging grooves and a liquid wick on the inner wall of the tube shell, the reflux rate of the working liquid inside the central channel can be increased by combining the grooves and the liquid wick. This design helps to enhance the capillary effect, so that the working liquid can circulate better inside the heat pipe, effectively increasing the reflux rate of the working liquid inside the heat pipe, thereby improving the heat transfer performance of the heat pipe and achieving the effect of high-efficiency heat transfer.
[0016] 2. The present invention relates to a highly efficient heat-absorbing evaporating copper tube and a heat dissipation method. The heat-absorbing section is the heated end of the heat pipe, where the liquid working medium evaporates and absorbs heat. The heat-insulating section is the middle part of the heat pipe, which plays an isolating role to prevent heat from being directly transferred from the hot end to the cold end. The condensing section is the other end of the heat pipe, where the steam releases heat and condenses into liquid. When the heat-absorbing section of the heat pipe is heated, the working liquid in the middle of the central channel evaporates rapidly and absorbs heat, reducing the heat at the heat-absorbing section. The steam flows to the other end under a slight pressure difference, where the steam cools and re-condenses into liquid, and releases heat at the condensing section. The liquid relies on the liquid absorption core and the groove to flow back to the heat-absorbing section again. The working liquid circulates between the heat-absorbing section and the condensing section to achieve efficient heat transfer.
[0017] 3. The high-efficiency heat-absorbing evaporation copper tube and heat dissipation method of the present invention, combined with the first and second embodiments, enables the heat pipe to be installed in different situations through the distribution of the liquid absorption core inside the tube shell. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the present invention.
[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.
[0020] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure of part A.
[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the tube shell in the first embodiment of the present invention.
[0022] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of part C.
[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the tube shell in the second embodiment of the present invention.
[0024] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of part B.
[0025] Among them: 11, tube shell; 12, liquid absorption core; 13, central channel; 14, heat absorption section; 15, insulation section; 16, condensation section; 17, fine powder; 18, coarse powder; 19, groove. DETAILED DESCRIPTION
[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0027] The present invention provides the following preferred embodiments: Example 1
[0028] like Figure 1-Figure 5 As shown, a high-efficiency heat absorption evaporation copper tube includes a tube shell 11, a groove 19, a liquid wick 12 and a central channel 13, wherein the groove 19 is provided on the inner wall of the tube shell 11, and specifically, the groove 19 is an axial groove, the liquid wick 12 covers the side of the groove 19 away from the tube shell 11, and the middle of the liquid wick 12 forms a central channel 13 for the flow of working liquid, and preferably, the working liquid is specifically water, which has the characteristics of low density, high specific heat, and excellent heat transfer performance, and is widely used in heat pipes; When one end of the tube shell 11 is heated, the working liquid in the middle of the central channel 13 evaporates quickly and absorbs heat, reducing the heat at the heated end. The vapor flows to the other end under a small pressure difference, where the vapor cools and recondenses into liquid and releases heat. The liquid flows back to the heated end again through the liquid wick 12 and the groove 19. Through the circulation of the working liquid, efficient heat transfer is achieved. The combination of the groove 19 and the liquid wick 12 can increase the reflux rate of the working liquid inside the central channel 13. This design helps to enhance the capillary action, allowing the working liquid to circulate better inside the heat pipe, effectively increasing the reflux rate of the working liquid inside the heat pipe, thereby improving the heat transfer performance of the heat pipe and achieving an efficient heat transfer effect.
[0029] like Figure 1-Figure 5 As shown, the groove 19 and the central channel 13 are both arranged along the length direction of the tube shell 11. The cross-sectional shape of the tube shell 11 is circular. The groove 19 is arranged along the length direction of the tube shell 11, which is conducive to obtaining a larger capillary force, thereby facilitating the reflux speed of the working liquid and improving the heat transfer effect of the heat pipe.
[0030] like Figure 1-Figure 5 As shown, the wick 12 forms a plurality of evenly distributed through holes inside the tube shell 11, and the through holes are connected to the central channel 13. The main function of the wick 12 in the heat pipe is to generate capillary force to make the working liquid circulate inside the tube shell 11. When the heat pipe is working, since the through holes are connected to the central channel 13, the liquid flows into the through holes, so that the wick 12 is filled with liquid-phase working medium. The external heat source inputs heat at the heat absorption section 14 to evaporate and vaporize the working liquid. The steam flows to the condensation section 16 to condense into liquid, releasing heat. The condensed liquid shrinks into the wick 12 and flows back to the condensation section 16 by the action of capillary pressure, completing the automatic circulation of the working liquid.
[0031] like Figure 1-Figure 5 As shown, the groove 19 is integrally formed on the inner wall of the tube shell 11. Specifically, the groove 19 is made by extrusion and broaching.
[0032] like Figure 1-Figure 5 As shown, the liquid wick 12 is made of copper powder and has good thermal conductivity.
[0033] like Figure 1-Figure 5 As shown, the tube shell 11 includes a heat absorbing section 14, a heat insulating section 15, and a condensing section 16, which are connected in sequence. The heat absorbing section 14 is the heated end of the heat pipe, where the liquid working medium evaporates and absorbs heat. The heat insulating section 15 is the middle part of the heat pipe, which plays an isolating role to prevent heat from being directly transferred from the hot end to the cold end. The condensing section 16 is the other end of the heat pipe, where the steam releases heat and condenses into liquid. Specifically, in actual use, a heat dissipation component is provided on the outer wall of the condensation section 16. The heat dissipation component can be air-cooled or water-cooled. The heat dissipation component is a prior art and will not be described in detail here.
[0034] like Figure 1-Figure 5 As shown, the end of the tube shell 11 away from the condensing section 16 has a smaller diameter. The smaller diameter helps to improve the heat transfer efficiency of the heat pipe, so that the steam can be transmitted to the condensing section 16 faster.
[0035] like Figure 1-Figure 5 As shown, the liquid wick 12 includes fine powder 17 and coarse powder 18, the fine powder 17 is located in the heat absorption section 14 and covers the inner wall of the groove 19, the coarse powder 18 is located in the insulation section 15 and the condensation section 16 and covers the inner wall of the groove 19, and the coarse powder 18 is arranged at the condensation section 16, which is more conducive to heat dissipation, and the fine powder 17 can form a more uniform coating, which is conducive to reducing the wetting angle and improving the heat transfer performance, and is suitable for the heat absorption section 14 of the heat pipe. The coarse powder 18 has good wettability and adsorption, and therefore has good adsorption for the working liquid; When the heat pipe is placed horizontally, the heat absorbing section 14 in the heat pipe is heated, and the working liquid in the middle of the central channel 13 evaporates quickly and absorbs heat, reducing the heat at the heat absorbing section 14. The vapor flows to the condensation section 16 under a slight pressure difference, where the vapor cools and recondenses into liquid, and releases heat at the condensation section 16. The liquid flows back to the heat absorbing section 14 again under the capillary action provided by the grooves 19 and the wick 12.
[0036] A heat dissipation method for a high-efficiency heat-absorbing evaporation copper tube comprises the following steps: S1, heat absorption: When the heat absorbing section 14 is heated, the working fluid inside the central channel 13 is heated, and the working fluid absorbs the heat and evaporates into steam; S2. Steam transmission: The steam flows to the condensation section 16 under the action of a small pressure difference. In this process, the steam transfers heat to the condensation section 16; S3, heat release: The steam is cooled by the heat dissipation component outside the condensation section 16 and condensed into liquid. In this process, the steam releases heat at the condensation section 16 and is converted into liquid. S4, loop: The condensed liquid flows back to the heat absorption section 14 again through the capillary force provided by the liquid absorption core 12. After the liquid flows back to the heat absorption section 14, it is evaporated again to form new steam and continue to transfer heat. This process is repeated to achieve cyclic heat dissipation. Example 2
[0037] like Figure 6-Figure 7 As shown, the fine powder 17 is located in the heat absorbing section 14 and covers the inner wall of the groove 19, and the coarse powder 18 is located in the heat insulating section 15 and covers the inner wall of the groove 19; When the heat absorbing section 14 is at the bottom and the condensing section 16 is at the top, the heat absorbing section 14 in the heat pipe is heated, and the working liquid in the middle of the central channel 13 evaporates rapidly and absorbs heat, reducing the heat at the heat absorbing section 14. The vapor flows to the condensing section 16 under a slight pressure difference, where the vapor cools and recondenses into liquid, and releases heat at the condensing section 16. The liquid flows back to the heat absorbing section 14 again under the action of gravity.
[0038] In combination with the first embodiment and the second embodiment, the heat pipe can be installed in different situations by adjusting the distribution of the liquid wick 12 inside the tube shell 11 .
[0039] The specific working process of the present invention is as follows: The heat absorbing section 14 is the heated end of the heat pipe, where the liquid working medium evaporates and absorbs heat. The insulation section 15 is the middle part of the heat pipe, which plays an isolating role to prevent heat from being directly transferred from the hot end to the cold end. The condensation section 16 is the other end of the heat pipe, where the steam releases heat and condenses into liquid. When the heat absorbing section 14 of the heat pipe is heated, the working liquid in the middle of the central channel 13 evaporates rapidly and absorbs heat, reducing the heat in the heat absorbing section 14. The steam flows to the other end under a slight pressure difference, where the steam cools and condenses into liquid again, and releases heat in the condensation section 16. The liquid relies on the liquid wick 12 and the groove 19 to flow back to the heat absorbing section 14 again, and efficient heat transfer is achieved through the circulation of the working liquid between the heat absorbing section 14 and the condensation section 16.
[0040] It should be noted that the copper powder inside the heat absorption section 14 is fine powder, so that the heat energy is absorbed faster, and the copper powder inside the condensation section 16 is coarse powder, so that the evaporation effect is good, so that the effect of changing from vaporization to distilled water is the best.
[0041] The beneficial effects of the present invention are specifically embodied in that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high-efficiency heat-absorbing evaporation copper tube, comprising a tube shell (11), characterized in that: It also comprises a groove (19), a liquid wick (12) and a central channel (13), wherein the groove (19) is formed on the inner wall of the tube shell (11), the liquid wick (12) covers a side of the groove (19) away from the tube shell (11), and the middle of the liquid wick (12) forms a central channel (13) for the flow of working liquid.
2. The high-efficiency heat-absorbing evaporation copper tube according to claim 1, characterized in that: The groove (19) and the central channel (13) are both arranged along the length direction of the tube shell (11), and the cross-sectional shape of the tube shell (11) is circular.
3. The high-efficiency heat-absorbing evaporation copper tube according to claim 2, characterized in that: The liquid wick (12) forms a plurality of evenly distributed through holes inside the tube shell (11), and the through holes are communicated with the central channel (13).
4. The high-efficiency heat-absorbing evaporation copper tube according to claim 3, characterized in that: The groove (19) is integrally formed and arranged on the inner wall of the tube shell (11).
5. The high-efficiency heat-absorbing evaporation copper tube according to claim 4, characterized in that: The liquid wick (12) is copper powder.
6. The high-efficiency heat-absorbing evaporation copper tube according to claim 5, characterized in that: The tube shell (11) comprises a heat absorption section (14), a heat insulation section (15), and a condensation section (16), and the heat absorption section (14), the heat insulation section (15), and the condensation section (16) are connected in sequence.
7. The high-efficiency heat-absorbing evaporation copper tube according to claim 6, characterized in that: The end of the tube shell (11) away from the condensation section (16) has a smaller diameter.
8. The high-efficiency heat-absorbing evaporation copper tube according to claim 7, characterized in that: The liquid wick (12) comprises fine powder (17) and coarse powder (18), wherein the fine powder (17) is located in the heat absorption section (14) and covers the inner wall of the groove (19), and the coarse powder (18) is located in the heat insulation section (15) and the condensation section (16) and covers the inner wall of the groove (19).
9. The high-efficiency heat-absorbing evaporation copper tube according to claim 8, characterized in that: The fine powder (17) is located in the heat absorption section (14) and covers the inner wall of the groove (19), and the coarse powder (18) is located in the heat insulation section (15) and covers the inner wall of the groove (19).
10. A heat dissipation method for a high-efficiency heat-absorbing evaporation copper tube according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, heat absorption: When the heat absorbing section 14 is heated, the working fluid inside the central channel 13 is heated, and the working fluid absorbs the heat and evaporates into steam; S2. Steam transmission: The steam flows to the condensation section 16 under the action of a small pressure difference. In this process, the steam transfers heat to the condensation section 16; S3, heat release: The steam is cooled by the heat dissipation component outside the condensation section 16 and condensed into liquid. In this process, the steam releases heat at the condensation section 16 and is converted into liquid. S4, loop: The condensed liquid flows back to the heat absorption section 14 again through the capillary force provided by the liquid absorption core 12. After the liquid flows back to the heat absorption section 14, it is evaporated again to form new steam and continue to transfer heat. This process is repeated to achieve cyclic heat dissipation.