CN116587004A - Heat pipe manufacturing equipment and manufacturing method - Google Patents
Heat pipe manufacturing equipment and manufacturing method Download PDFInfo
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- CN116587004A CN116587004A CN202310561369.9A CN202310561369A CN116587004A CN 116587004 A CN116587004 A CN 116587004A CN 202310561369 A CN202310561369 A CN 202310561369A CN 116587004 A CN116587004 A CN 116587004A
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- pipe
- heat pipe
- transmission device
- pipe section
- opening
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 46
- 238000005507 spraying Methods 0.000 claims abstract description 85
- 230000005540 biological transmission Effects 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 239000002131 composite material Substances 0.000 claims abstract description 37
- 238000004070 electrodeposition Methods 0.000 claims abstract description 31
- 238000003466 welding Methods 0.000 claims abstract description 30
- 238000005452 bending Methods 0.000 claims abstract description 24
- 239000003792 electrolyte Substances 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 59
- 239000002184 metal Substances 0.000 claims description 59
- 238000000034 method Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 11
- 239000003507 refrigerant Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 6
- 238000010992 reflux Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 14
- 229920002635 polyurethane Polymers 0.000 description 13
- 239000004814 polyurethane Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 230000017525 heat dissipation Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 238000005187 foaming Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 6
- 230000035484 reaction time Effects 0.000 description 6
- 239000006261 foam material Substances 0.000 description 5
- 230000004323 axial length Effects 0.000 description 4
- 230000036632 reaction speed Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000011859 microparticle Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
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- 239000011780 sodium chloride Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The application discloses a heat pipe manufacturing device and a manufacturing method, wherein the manufacturing device comprises an electrochemical deposition system and a heat pipe assembling part; the electrochemical deposition system comprises a power supply subsystem and an electrolyte circulation subsystem; the heat pipe assembly part comprises an assembly base and a control panel, wherein a discharging area, a transmission device and a receiving area are sequentially arranged on the assembly base, a head shrinking device, a first welding gun, a first ultrasonic spraying device, a second ultrasonic spraying device and a pipe head bending device are sequentially arranged on one side of the transmission device along the transmission direction, and a third ultrasonic spraying device, a composite material feeding device, a liquid injection tail shrinking device, a second welding gun and a pipe tail bending device are sequentially arranged on the other side of the transmission device along the transmission direction. According to the application, the high-speed liquid reflux path from the micro groove to the porous super-hydrophilic layer is realized at the uppermost end of the heat pipe, the liquid reflux speed is increased under the condition of reverse gravity, the electrochemical deposition time is shortened, and the heat pipe manufacturing efficiency is greatly improved.
Description
Technical Field
The application relates to a heat pipe heat dissipation technology, in particular to a heat pipe manufacturing device and a manufacturing method.
Background
With the development of display cards and notebook computers, particularly the notebook computers can rotate by 360 degrees and fold for office work, the anti-gravity requirements are correspondingly provided for the heat pipes, and high requirements are provided for the anti-gravity of the heat pipes because the anti-gravity and horizontal requirements are simultaneously met.
Various antigravity heat pipe techniques are proposed in the prior art, such as electrochemical deposition of porous water materials, sintering techniques, extrusion of micro-grooves, capillary network techniques, and the like. The electrochemical deposition technology has remarkable effect, but is mostly used for academic research, and the industrial application is limited by the preparation speed and the scale; the sintering technology has complex process and higher cost; the capillary pressure of the extruded micro-groove structure is low, and the liquid flows back slowly against gravity under the action of gravity.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides a heat pipe manufacturing device and a manufacturing method, which realize the manufacturing of heat pipes with obvious antigravity effect by mass production with low cost.
The embodiment of the application provides a heat pipe manufacturing device, which comprises an electrochemical deposition system and a heat pipe assembly part;
the electrochemical deposition system comprises a power supply subsystem and an electrolyte circulation subsystem; the electrolyte circulation subsystem comprises a driving pump, a liquid circulation pipe and at least one three-way pipe, wherein the driving pump is used for driving electrolyte to circulate in the liquid circulation pipe and the at least one three-way pipe; the power subsystem comprises a direct current power supply, a first wire and a second wire, wherein the direct current power supply is respectively and electrically connected with the first wire and the second wire, the first wire is arranged in the liquid circulation pipe, and the second wire is used for being in conductive contact with the metal pipe;
the heat pipe assembly part comprises an assembly base and a control panel, wherein a discharging area, a transmission device and a receiving area are sequentially arranged on the assembly base, a head shrinking device, a first welding gun, a first ultrasonic spraying device, a second ultrasonic spraying device and a pipe head bending device are sequentially arranged on one side of the transmission device along the transmission direction, and a third ultrasonic spraying device, a composite material feeding device, a liquid injection tail shrinking device, a second welding gun and a pipe tail bending device are sequentially arranged on the other side of the transmission device along the transmission direction.
Further, the liquid circulating pipe is communicated with two pipe orifices of the three-way pipe to form a horizontal pipeline, and the other pipe orifice of the three-way pipe is arranged upwards and is used for being inserted with a vertical metal pipe.
Further, the liquid circulation pipe is also provided with a pipe section for limiting the liquid level.
Further, a first welding gun on one side of the transmission device is arranged opposite to a third ultrasonic spraying device on the other side of the transmission device; the first ultrasonic spraying device on one side of the transmission device is arranged opposite to the composite material feeding device on the other side of the transmission device; the second ultrasonic spraying device on one side of the transmission device is arranged opposite to the second welding gun on the other side of the transmission device; the tube head bending device at one side of the transmission device is arranged opposite to the tube tail bending device at the other side of the transmission device.
Further, the first ultrasonic spraying device, the second ultrasonic spraying device and the third ultrasonic spraying device are all provided with at least one spraying opening, and the opening of the spraying opening is downward and opposite to the end part of the metal pipe arranged on the transmission device.
Further, the first ultrasonic spraying device, the second ultrasonic spraying device and the third ultrasonic spraying device are all provided with at least three spraying openings, the opening of the first spraying opening is downward and is opposite to the end part of the metal pipe arranged on the transmission device, and the opening of the second spraying opening and the opening of the third spraying opening are obliquely upward and opposite to the end part of the metal pipe arranged on the transmission device.
Further, a certain interval is arranged between the second spraying opening and the third spraying opening.
The application also provides a heat pipe manufacturing method, which comprises the following steps:
A. immersing the inner wall of a first pipe section of the metal pipe with a plurality of grooves on the inner wall at intervals into electrolyte, and forming a porous super-hydrophilic layer on the inner wall by adopting an electrochemical deposition method;
B. carrying out head shrinking and welding operation on the end part of the first pipe section;
C. the coiled composite material is placed into the first pipe section from the opening of the second pipe section of the metal pipe, and the capillary network is placed into the middle pipe section and the second pipe section from the opening of the second pipe section of the metal pipe;
D. injecting refrigerant liquid into the metal pipe, vacuumizing, and shrinking the end part of the second pipe section;
E. welding the end part of the second pipe section, and simultaneously cooling the first pipe section through ultrasonic spraying;
F. and bending and forming the metal pipe to form a first pipe section, a middle pipe section and a second pipe section.
Further, the step B further comprises cooling the welded first pipe section.
Further, the electrochemical deposition time in step a is less than 2 minutes.
According to the application, the high-speed liquid reflux path from the micro groove to the porous super-hydrophilic layer is realized at the uppermost end of the heat pipe, so that the liquid reflux speed is increased under the condition of counter gravity, the electrochemical deposition time is shortened, and the heat pipe manufacturing efficiency and the heat pipe heat dissipation efficiency are greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a heat pipe heat dissipation assembly according to an embodiment of the application;
FIG. 2 is a schematic illustration of a heat sink in a heat pipe heat dissipating assembly according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a second tube section and a middle tube section of a heat pipe according to an embodiment of the application;
FIG. 4 is a schematic illustration of a composite material according to an embodiment of the present application;
FIG. 5 is a cross-sectional view of a first tube segment of a heat pipe according to an embodiment of the present application;
FIG. 6 is a schematic diagram illustrating a flow direction of gas in a first section of a heat pipe according to an embodiment of the present application;
FIG. 7 is an enlarged schematic view of a portion of a groove in a heat pipe according to an embodiment of the application;
FIG. 8 is a schematic diagram of an electrochemical deposition system according to an embodiment of the present application;
FIG. 9 is a left side partial view of a heat pipe assembly according to an embodiment of the present application;
FIG. 10 is a right side partial view of a heat pipe assembly according to an embodiment of the present application;
FIG. 11 is a view showing the position of the spray nozzle of the ultrasonic spraying device according to the embodiment of the application;
FIG. 12 is a flowchart illustrating steps of a method for manufacturing a heat pipe according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described by means of implementation examples with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, an embodiment of the present application provides an antigravity heat pipe, wherein the heat pipe 1 comprises a first pipe section 12 arranged at an upper end, a second pipe section 11 arranged at a lower end, and a middle pipe section 13 for connecting the first pipe section 12 and the second pipe section 11; the actual heat pipe heat dissipation assembly is composed of a heat pipe 1 and a radiator 2 arranged on a second pipe section 11 at the lower end, and referring to fig. 2, the radiator 2 is composed of a plurality of radiating fins.
The first pipe section 12 is connected with the middle pipe section 13 in a bending way, and the second pipe section 11 is connected with the middle pipe section 13 in a bending way;
referring to fig. 3, a plurality of grooves 14 are formed in the inner wall of the heat pipe 1 at intervals, the grooves 14 are formed along the length direction of the heat pipe, and generally extend through the length direction of the whole heat pipe, and the width of the grooves is gradually reduced along the radial direction (the direction indicated by the dotted arrow in the figure) of the inner wall of the heat pipe pointing to the center of the cross section of the heat pipe, so that the capillary structure can be prevented from falling into the grooves by reducing the width of the opening at the top of the grooves, and the grooves are prevented from being blocked; the material of the heat pipe is usually copper pipe or aluminum pipe, and aluminum pipe is preferred in the scheme of the application. Aluminum pipe material costs are relatively low compared to copper, but the heat conductivity and ductility are inferior to copper.
The surface of the first pipe section 12 is provided with a porous super-hydrophilic layer formed by electrochemical deposition, the outside of the grooves 14 of the second pipe section 11 and the middle pipe section 13 is paved with a capillary network 15, the capillary network 15 is used for improving the liquid reflux speed, and as the narrow opening shape at the upper part of the groove 14 is arranged, the contact angle between the groove and the capillary network is larger, the reflux speed is further increased to greatly improve the heat conduction performance of the aluminum pipe, so that the product is integrally superior to the heat conduction performance of the copper pipe material in the past, and the replacement of low-cost materials is realized.
Referring to fig. 4, further as a preferred embodiment, a composite material 16 for absorbing water and conducting heat is disposed within the first tube segment 12; the composite material 16 is formed by laminating and winding a layer of sheet metal material 161 and a layer of polyurethane soft foam material 162. The adoption of the coiled composite material 16 can maximize the liquid absorption volume through the polyurethane soft foaming material 162 on one hand, and can greatly improve the liquid absorption capacity of the top end of the heat pipe under the environment of counter gravity; on the other hand, the heat conduction area can be increased by the metal material 161, so that the heat exchange between the liquid and the pipe wall is enhanced, and the liquid is evaporated as soon as possible, so that the strong liquid absorbing capability of the polyurethane soft foam material is maintained. The use of the polyurethane soft foaming material has certain assembly difficulty, but reduces the dependence on the thickness of the porous super-hydrophilic layer to a certain extent, which is equivalent to the effect that the polyurethane soft foaming material replaces a part of the thickness of the porous super-hydrophilic layer, thereby saving the electrochemical deposition reaction time and being beneficial to production and manufacture.
The polyurethane soft foaming material has the advantages of excellent water absorption capacity, low material cost and simple assembly, but the manufacturing difficulty is high because of high temperature generated in the welding process of the heat pipe, and the polyurethane soft foaming material can not be damaged in the manufacturing process by adopting efficient cooling measures in the manufacturing process of the heat pipe.
Referring to fig. 5, as a further preferred embodiment, the polyurethane soft foam 162 is disposed on the outer layer of the composite 16 and is tightly attached to the groove on the inner wall of the heat pipe 1, that is, when the composite is prepared by winding, the polyurethane soft foam 162 is always placed in the outer layer space, the composite 16 is clamped by a clamp and is filled into the first pipe section 12 of the heat pipe 1 during filling, a certain pressure can be applied during clamping to compress the composite 16 in the radial direction, and the resilience of the sheet metal material 161 in the composite 16 is tightly attached to the groove 14 on the inner wall of the heat pipe 1 when the clamping mechanism is withdrawn, so that the composite is fully contacted with the porous super-hydrophilic layer. In addition, in the subsequent heat pipe bending step, the composite material 16 is further limited through the bending part, so that the stability of the structural position of the composite material is ensured.
Referring to fig. 6, further as a preferred embodiment, the composite 16 is spaced a distance d from the end of the first tube segment 12 of the heat pipe 1.
Referring to fig. 4-6, further as a preferred embodiment, the center of the composite 16 is provided with a hollow 163.
Because the heat pipe is manufactured by shrinkage welding, the end is not regular, the composite material 16 and the end form a certain space instead of being completely attached, if the liquid absorbs heat and evaporates and stays in the space, a local high thermal resistance area is formed due to low gas heat conductivity coefficient, and rapid heat dissipation is not facilitated, so that the hollow part 163 in the center of the composite material 16 can be used as a heat dissipation channel to communicate with the spaces at two ends, the heated and expanded gas at the end can be rapidly discharged, and the gas flows to the space as shown in fig. 6.
Further as a preferred embodiment, the ratio of the diameter of the hollow portion 163 to the outer diameter of the composite material 16 is 1/4-1/5, and when the ratio is adopted, the end portion is heated and expanded to form high-pressure gas which flows out at a high speed through the narrow heat dissipation channel, so that a venturi effect is generated, and the energy circulation efficiency can be further improved.
Further as a preferred embodiment, the porous super hydrophilic layer formed by electrochemical deposition has a thickness of 0.01 to 0.03mm.
In the conventional scheme, the porous material layer deposited to a certain thickness is required to be formed by long-time reaction by an electrochemical deposition method, the reaction time is 30 minutes on average, and the reaction speed is required to be accurately regulated due to the long reaction time. In this embodiment, since industrial mass production is required, production efficiency is extremely important. In the embodiment, the thickness of the porous super-hydrophilic layer formed by electrochemical deposition is very thin, the reaction speed can be increased by adopting relatively higher electrolyte concentration, and the problem of excessive deposition thickness caused by long-time reaction is avoided, so that the reaction time can be shortened to at least one tenth of the original reaction time, the rapid mass production in the actual industry can be realized, and the manufacturing cost is greatly reduced. In this embodiment, as shown in fig. 6, the axial length of the composite material 16 is smaller than the length of the first pipe section 12, that is, the two ends of the porous super-hydrophilic material layer in the first pipe section 12 in the axial length exceed the axial length of the composite material 16, and at this time, the porous super-hydrophilic layer does not absorb heat and evaporate, because its thickness is small and evaporation amount is limited, and its main effect is that: firstly, since the grooves 14 on the inner wall of the heat pipe 1 are in a shape with a variable radial width, for example, as shown in fig. 7, the ribs 142 on the inner wall for forming the grooves 141 are correspondingly in a shape with a wide upper part and a narrow lower part, that is, the base parts of the ribs 142 connected with the inner wall are narrower, so that the ribs can be cracked due to bending stress in the bending process of the subsequent heat pipe; secondly, because the heat pipe 1 needs to be bent and formed, the axial length of the composite material 16 is smaller than that of the first pipe section 12, and therefore, on the basis of the groove 1, a thin porous super-hydrophilic layer is adopted as a bridge for accelerating the liquid circulation between the groove 1 and the composite material 16 under the condition of counter gravity, and the liquid absorption capacity of the composite material 16 is improved.
Referring to fig. 7, further as a preferred embodiment, the cross section of the groove is a trapezoid, where the groove 141 is a trapezoid, the width of the upper bottom of the trapezoid at the bottom of the groove 141 is 0.1-0.15mm, the upper part of the trapezoid is narrow, so that the capillary structure of the capillary network 15 can be prevented from falling into the groove 1 to form a blockage, the contact angle with the capillary network 15 is increased by the trapezoid inclined plane, the liquid absorbing effect is further improved, the width of the lower bottom of the trapezoid is 0.2-0.3mm, and the width of the bottom of the trapezoid can ensure the liquid absorbing flow. Meanwhile, the porous super-hydrophilic layer also has a certain thickness, so that the width of the upper part of the groove 141 is further narrowed, the effect of preventing the capillary structure of the capillary network 15 from falling into the groove 1 is further enhanced, the upper part of the groove 141 is prevented from being closed by setting the upper limit of the thickness to 0.03mm, the water absorption effect is realized by setting the lower limit of the thickness to 0.01mm, and the water absorption effect is further remarkably improved by combining the increased contact angle with the capillary network 15.
Referring to fig. 8-10, embodiments of the present application provide a heat pipe manufacturing apparatus including an electrochemical deposition system 3 and a heat pipe fitting portion 4;
the electrochemical deposition system 3 comprises a power supply subsystem and an electrolyte circulation subsystem; the electrolyte circulation subsystem comprises a driving pump 36, a liquid circulation pipe 35 and at least one tee pipe 34, wherein the driving pump 36 is used for driving electrolyte to circulate in the liquid circulation pipe 35 and the at least one tee pipe 34; the power subsystem comprises a direct current power supply 31, a first lead wire 33 and a second lead wire 32, wherein the direct current power supply 31 is respectively and electrically connected with the first lead wire 33 and the second lead wire 32, the first lead wire 33 is arranged in a liquid circulation pipe 35, and the second lead wire 32 is used for being in conductive contact with the metal pipe 10;
in the electrochemical deposition system 3 shown in fig. 8, a multi-stage liquid circulation pipe 35 is used to communicate with 4 three-way pipes 34 and form a complete circulation system with a drive pump 36.
The heat pipe assembly part 4 comprises an assembly base 40 and a control panel 42, wherein a discharging area 41, a transmission device 43 and a receiving area 45 are sequentially arranged on the assembly base 40, a head shrinking device 4411, a first welding gun 4412, a first ultrasonic spraying device 4413, a second ultrasonic spraying device 4415 and a pipe head bending device 4416 are sequentially arranged on one side of the transmission device 43 along the transmission direction, and a third ultrasonic spraying device 4422, a composite material feeding device 4423, a liquid injection tail shrinking device 4424, a second welding gun 4425 and a pipe tail bending device 4426 are sequentially arranged on the other side of the transmission device 43 along the transmission direction.
Referring to fig. 8, as a further preferred embodiment, the liquid circulation pipe 35 is in communication with two nozzles of the tee 34 to form a horizontal pipe, and the other nozzle of the tee 34 is disposed upward and is used for plugging the vertical metal pipe 10.
In general, in an electrochemical deposition system, two ends of a single long metal tube are connected to a closed circulation pipeline for electrochemical reaction, and then the long metal tube is cut after a deposition layer is formed, the first disadvantage is that long-time accurate reaction concentration regulation is required, the second disadvantage is that the batch production efficiency is low, the industrial application is not facilitated, and the third disadvantage is that the two ends of the metal tube need to be connected to the pipeline frequently and manually, and the operation is complex. In the embodiment of the application, as excessive thickness is not required to be deposited, the concentration of reactants can be properly mentioned to increase the reaction speed, the metal pipe can be cut firstly and then vertically inserted into the three-way pipe, the liquid level height can be set according to the situation, and the metal pipe is directly pulled and inserted after the reaction is finished to finish electrochemical deposition and replace a new pipe, so that an electrochemical system continuously operates in the pipe replacement process, and the circulation of electrolyte is not required to be interrupted.
Referring to fig. 8, as a further preferred embodiment, the liquid circulation pipe 35 is further provided with a pipe section 351 for limiting the liquid level, and the liquid level is limited by the pipe section 351 during the circulation of the electrolyte, so that the electrochemical deposition reaction is limited to the first pipe section 12, and the whole section of heat pipe is not needed to participate in the reaction, thereby further improving the reaction speed, reducing the use and the replacement of the electrolyte, and improving the working efficiency.
Referring to fig. 9 and 10, further as a preferred embodiment, the first welding gun 4412 on one side of the transmission 43 is disposed opposite to the third ultrasonic spraying device 4422 on the other side of the transmission 43; the first ultrasonic spraying device 4413 on one side of the transmission device 43 is arranged opposite to the composite material feeding device 4423 on the other side of the transmission device 43; the second ultrasonic spraying device 4415 on one side of the transmission device 43 is arranged opposite to the second welding gun 4425 on the other side of the transmission device 43; the tube head bending device 4416 on one side of the transmission device 43 is opposite to the tube tail bending device 4426 on the other side of the transmission device 43.
The two sides of the transmission device 43 correspond to 6 operation positions respectively, and specific reference may be made to the following specific embodiments of the heat pipe manufacturing method in the present application.
Referring to fig. 11, further as a preferred embodiment, each of the first ultrasonic spraying device 4413, the second ultrasonic spraying device 4415 and the third ultrasonic spraying device 4422 is provided with at least one spraying opening 44131, and the spraying opening 44131 is opened downward and is opposite to the end of the metal tube placed on the transmission device 43.
The ultrasonic spraying device can be used for spraying purified water to the end part of the metal pipe after atomizing, the end part of the metal pipe contacts with spraying microparticles and instantly gasifies the spraying microparticles to take away heat, and compared with the conventional fluid cooling, the scheme has the advantages that thicker liquid films are not formed on the surface of the metal pipe after gasifying the spraying microparticles, liquid phase change heat absorption is realized, the heat transfer efficiency is higher, more heat can be taken away, and the cooling effect is more ideal; and third ultrasonic wave atomizer 4422 corresponds with first welder 4412, and the spraying realizes the cooling on the one hand when the welding, on the other hand has realized forming the low oxygen atmosphere through rapid a large amount of gasification, has avoided the oxidation of the other end, and the welding effect of follow-up other end will be more ideal, and does not need additionally to provide nitrogen protection atmosphere, further reduces equipment cost.
Referring to fig. 11, further preferred embodiments, the first ultrasonic spraying device 4413, the second ultrasonic spraying device 4415 and the third ultrasonic spraying device 4422 are provided with at least three spraying openings, the first spraying opening 44131 is downward facing to the end of the metal tube arranged above the transmission device, and the second spraying opening 44132 and the third spraying opening 44131 are upward facing to the end of the metal tube arranged above the transmission device. In the actual conveying process, the two ends of the metal tube need to exceed the width of the conveying device 43 to expose the two ends for equipment operation, so that a certain distance S1 is formed between the first spraying opening 44131 and the metal tube moving on the conveying device 43 along the track, a certain distance S2 is formed between the second spraying opening 44132 and the third spraying opening 44131 and the lower surface of the metal tube moving on the conveying device 43 along the track, the distances S1 and S2 can be set according to the actual situation, the metal tube can smoothly pass through in the moving process, and the spraying distance can achieve the best heat dissipation effect.
Referring to fig. 11, as a further preferred embodiment, a certain space S3 is provided between the second spraying opening 44132 and the third spraying opening 44131, and if the temperature of the end portion of the metal pipe is reduced to a certain extent during the spraying and cooling process, the condensation speed of the spray on the outer wall of the metal pipe is greater than the gasification speed, so that the liquid drops fall, the spraying opening should be avoided being located right below the end portion of the metal pipe, and the best heat dissipation effect can be achieved at this time.
Further, as a preferred embodiment, a plurality of groups of spraying openings can be further arranged in the length direction of the metal tube, for example, the spraying openings are additionally arranged at corresponding positions of the middle section of the metal tube, namely, the middle positions of two conveying belts of the illustrated conveying device 43, so that heat conduction from a welding position to a composite material in the metal tube is further prevented, and particularly, high-temperature gas conduction heat inside the metal tube at the welding position can be avoided, and the composite material is effectively protected.
Referring to fig. 12, a method for manufacturing an antigravity heat pipe according to an embodiment of the present application includes the following steps, which are described with reference to fig. 8 to 10, which are schematic views of manufacturing equipment:
referring to fig. 8, step a, the metal tube after the pretreatment is subjected to an electrochemical deposition process: immersing the inner wall of a first pipe section 14 of the metal pipe with a plurality of grooves 14 on the inner wall at intervals in electrolyte and forming a porous super-hydrophilic layer on the inner wall by adopting an electrochemical deposition method; the metal tube is typically a copper tube or an aluminum tube, with aluminum tube being preferred in the present version. Aluminum pipe material costs are relatively low compared to copper, but the heat conductivity and ductility are inferior to copper.
The pretreatment of the metal pipe as described above generally includes a washing step, an alkaline washing step and a drying step, and is intended to remove impurities from the inner wall surface of the metal pipe. The electrochemical deposition process is specifically that the power supply 31 is connected with the positive and negative wires 32 and 33, the surface of the metal tube is connected with the positive electrode of the power supply, the wires of the negative electrode of the power supply are immersed in NaCl electrolyte, as shown in fig. 8, the second wire 33 of the negative electrode is additionally provided with a wire tail end 331 in each three-way pipe 34, so that an even electric field is generated to facilitate electrochemical reaction, the inner wall of the metal tube is used as the anode to participate in the reaction to generate a porous super-hydrophilic layer, meanwhile, the electrolyte is driven to flow and circulate evenly by driving the pump 36, wherein the concentration of the electrolyte participating in the reaction can be set to be 0.5-1mol/L, the flow rate of the electrolyte can be set to be 2-3L/min, the average current density of the power supply provided for each metal tube is about 50-100mA/min, and the electrochemical deposition time of each metal tube is less than 2 minutes due to the required deposition layer, the time required for subsequent heating and baking is very short or without using heating baking to reinforce, so that the preparation time can be saved.
Referring to fig. 9-10, in step B, in the 1 st operation position, the head retracting device 4411 on the side of the transmission device 43 retracts the head of the first pipe section; in the 2 nd operation position, the first welding gun 4412 on one side of the transmission device 43 performs welding operation on the end part of the first pipe section 12 of the metal pipe, and meanwhile, the third ultrasonic spraying device 4422 oppositely arranged on the other side of the transmission device 43 performs spraying cooling on the second pipe section 11 of the metal pipe, and simultaneously, a large amount of purified water is gasified to form a low-oxygen protection atmosphere; it should be noted that the atomization process avoids the use of water containing mineral impurities, which might otherwise cause impurities to affect the subsequent welding effect;
in the step C, since the composite material 16 is a polyurethane soft foam material with low cost and strong water absorbability but no high temperature resistance, in the 3 rd operation position, the first ultrasonic spraying device 4413 on one side of the transmission device 43 cools the welded part to avoid the thermal deformation failure of the placed polyurethane soft foam material, meanwhile, the composite material feeding device 4423 arranged on the other side of the transmission device 43 is opposite to the first pipe section 12 from the opening of the second metal pipe section 11, and the capillary network 15 is placed into the middle pipe section 13 and the second pipe section 11 from the opening of the second metal pipe section 11; in this step, the composite material feeding device 4423 completes the placement of the composite material 16 and the capillary network 15 sequentially;
step D, in the 4 th operation position, the liquid injection and tail shrinkage device 4424 at the other side of the transmission device 43 injects refrigerant liquid into the metal pipe and vacuumizes the end part of the second pipe section 11, and the vacuumizing, liquid injection and tail shrinkage are all conventional operations and are not repeated herein;
step E, then in the 5 th operation position, a second welding gun 4425 on the other side of the transmission device 43 performs welding operation on the end part of the second pipe section 11, and meanwhile, a second ultrasonic spraying device 4415 which is arranged on one side of the transmission device 43 oppositely performs spraying cooling on the first pipe section 12, so that the heat deformation failure of the polyurethane soft foaming material caused by the conduction of welding high temperature to the first pipe section 12 is avoided; the high-efficiency liquid absorption structure with extremely low cost and high assembly efficiency is realized through the steps;
and F, finally, in the 6 th operation position, the pipe head bending device 4416 on one side of the transmission device 43 and the pipe tail bending device 4426 arranged opposite to the other side of the transmission device 43 bend and mold the metal pipe simultaneously to form a first pipe section, a middle pipe section and a second pipe section.
Through the above embodiments, the present application achieves the production and manufacture of high efficiency heat pipes with less electrochemical deposition reaction time, lower heat pipe material cost, liquid absorbing material cost, manufacturing equipment cost, and support for low cost material applications (preferably aluminum pipe, polyurethane soft foam material) by improved methods through structural optimization, improvement of manufacturing equipment, and improvement of manufacturing methods.
Note that the above is only a preferred embodiment of the present application and the technical principle applied. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, while the application has been described in connection with the above embodiments, the application is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the application, which is set forth in the following claims.
Claims (10)
1. A heat pipe manufacturing apparatus, characterized in that: comprises an electrochemical deposition system and a heat pipe assembly part;
the electrochemical deposition system comprises a power supply subsystem and an electrolyte circulation subsystem; the electrolyte circulation subsystem comprises a driving pump, a liquid circulation pipe and at least one three-way pipe, wherein the driving pump is used for driving electrolyte to circulate in the liquid circulation pipe and the at least one three-way pipe; the power subsystem comprises a direct current power supply, a first wire and a second wire, wherein the direct current power supply is respectively and electrically connected with the first wire and the second wire, the first wire is arranged in the liquid circulation pipe, and the second wire is used for being in conductive contact with the metal pipe;
the heat pipe assembly part comprises an assembly base and a control panel, wherein a discharging area, a transmission device and a receiving area are sequentially arranged on the assembly base, a head shrinking device, a first welding gun, a first ultrasonic spraying device, a second ultrasonic spraying device and a pipe head bending device are sequentially arranged on one side of the transmission device along the transmission direction, and a third ultrasonic spraying device, a composite material feeding device, a liquid injection tail shrinking device, a second welding gun and a pipe tail bending device are sequentially arranged on the other side of the transmission device along the transmission direction.
2. A heat pipe manufacturing apparatus according to claim 1, wherein: the liquid circulating pipe is communicated with two pipe orifices of the three-way pipe to form a horizontal pipeline, and the other pipe orifice of the three-way pipe is upwards arranged and is used for being inserted with a vertical metal pipe.
3. A heat pipe manufacturing apparatus according to claim 2, wherein: the liquid circulation pipe is also provided with a pipe section for limiting the liquid level.
4. A heat pipe manufacturing apparatus according to claim 1, wherein: the first welding gun on one side of the transmission device is arranged opposite to the third ultrasonic spraying device on the other side of the transmission device; the first ultrasonic spraying device on one side of the transmission device is arranged opposite to the composite material feeding device on the other side of the transmission device; the second ultrasonic spraying device on one side of the transmission device is arranged opposite to the second welding gun on the other side of the transmission device; the tube head bending device at one side of the transmission device is arranged opposite to the tube tail bending device at the other side of the transmission device.
5. A heat pipe manufacturing apparatus according to claim 1, wherein: the first ultrasonic spraying device, the second ultrasonic spraying device and the third ultrasonic spraying device are all provided with at least one spraying opening, and the opening of the spraying opening is downward and opposite to the end part of the metal pipe arranged on the transmission device.
6. A heat pipe manufacturing apparatus according to claim 1, wherein: the first ultrasonic spraying device, the second ultrasonic spraying device and the third ultrasonic spraying device are all provided with at least three spraying openings, the opening of the first spraying opening is downward and is opposite to the end part of the metal pipe arranged on the transmission device, and the opening of the second spraying opening and the opening of the third spraying opening are obliquely upward and opposite to the end part of the metal pipe arranged on the transmission device.
7. A heat pipe manufacturing apparatus according to claim 6, wherein: a certain interval is arranged between the second spraying opening and the third spraying opening.
8. The manufacturing method of the heat pipe is characterized by comprising the following steps:
A. immersing the inner wall of a first pipe section of the metal pipe with a plurality of grooves on the inner wall at intervals into electrolyte, and forming a porous super-hydrophilic layer on the inner wall by adopting an electrochemical deposition method;
B. carrying out head shrinking and welding operation on the end part of the first pipe section;
C. the coiled composite material is placed into the first pipe section from the opening of the second pipe section of the metal pipe, and the capillary network is placed into the middle pipe section and the second pipe section from the opening of the second pipe section of the metal pipe;
D. injecting refrigerant liquid into the metal pipe, vacuumizing, and shrinking the end part of the second pipe section;
E. welding the end part of the second pipe section, and simultaneously cooling the first pipe section through ultrasonic spraying;
F. and bending and forming the metal pipe to form a first pipe section, a middle pipe section and a second pipe section.
9. A method of manufacturing a heat pipe according to claim 8, wherein: and B, cooling the welded first pipe section.
10. A method of manufacturing a heat pipe according to claim 8, wherein: the electrochemical deposition time in step a is less than 2 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310561369.9A CN116587004B (en) | 2023-05-18 | 2023-05-18 | Heat pipe manufacturing equipment and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310561369.9A CN116587004B (en) | 2023-05-18 | 2023-05-18 | Heat pipe manufacturing equipment and manufacturing method |
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| CN116587004B CN116587004B (en) | 2023-10-13 |
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| US20090308576A1 (en) * | 2008-06-17 | 2009-12-17 | Wang Cheng-Tu | Heat pipe with a dual capillary structure and manufacturing method thereof |
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| CN108267036A (en) * | 2018-01-30 | 2018-07-10 | 中国科学院理化技术研究所 | The loop heat pipe of micro-channel structure auxiliary drive |
| CN109764708A (en) * | 2019-01-28 | 2019-05-17 | 刘康 | Heat pipe and its manufacturing method, the equipment comprising the heat pipe |
| CN112833693A (en) * | 2021-02-26 | 2021-05-25 | 华南理工大学 | Preparation method of aluminum flat heat pipe and aluminum flat heat pipe |
| CN115876015A (en) * | 2022-11-29 | 2023-03-31 | 广州华钻电子科技有限公司 | High-power heat pipe with composite capillary structure and preparation method thereof |
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2023
- 2023-05-18 CN CN202310561369.9A patent/CN116587004B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090308576A1 (en) * | 2008-06-17 | 2009-12-17 | Wang Cheng-Tu | Heat pipe with a dual capillary structure and manufacturing method thereof |
| CN102538528A (en) * | 2011-12-14 | 2012-07-04 | 中山伟强科技有限公司 | Ultrathin heat pipe and manufacturing method thereof |
| CN108267036A (en) * | 2018-01-30 | 2018-07-10 | 中国科学院理化技术研究所 | The loop heat pipe of micro-channel structure auxiliary drive |
| CN109764708A (en) * | 2019-01-28 | 2019-05-17 | 刘康 | Heat pipe and its manufacturing method, the equipment comprising the heat pipe |
| CN112833693A (en) * | 2021-02-26 | 2021-05-25 | 华南理工大学 | Preparation method of aluminum flat heat pipe and aluminum flat heat pipe |
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| CN116587004B (en) | 2023-10-13 |
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