CN101165449A - Heat pipe and its making method - Google Patents
Heat pipe and its making method Download PDFInfo
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- CN101165449A CN101165449A CNA2006101248300A CN200610124830A CN101165449A CN 101165449 A CN101165449 A CN 101165449A CN A2006101248300 A CNA2006101248300 A CN A2006101248300A CN 200610124830 A CN200610124830 A CN 200610124830A CN 101165449 A CN101165449 A CN 101165449A
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- heat pipe
- hollow bulb
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- end cap
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Abstract
This invention relates to a heat pipe and its manufacturing method. It includes a hollow pipe shell, end cover, capillary liquid absorbing core firmly attaching to the inner wall of pipe shell and working liquid. The capillary liquid absorbing core is filled with the working liquid. The said capillary liquid absorbing core is the copper alloy particle deposited layer which deposits at inner wall of hollow pipe shell by electrochemical method. The thickness of the copper alloy particle deposited layer is 0.1-1.0mm. The particle degree of copper alloy particle is 50-100/mm2. The manufacturing method includes: material preparing, base material preprocessing, working face texturing, washing, copper coarsening layer electrochemical depositing, washing, chemical passivating, washing, drying, assembling, welding, working liquid injecting, vacuumizing and sealing screw assembling. The liquid absorbing core of heat pipe combines firmly to the base material which constitutes the heat pipe hollow pipe shell. The capillary effect is obvious. The heat pipe radial heat resistance is low. The heat exchanging efficiency is large. The manufacturing method is simple, applied and low cost.
Description
Technical field:
The present invention relates to conductive structure, particularly a kind of heat pipe and preparation method thereof.
Background technology:
Heat pipe is to rely on self internal work liquid phase-change to realize the heat-conductive assembly of heat conduction, and typical heat pipe is made up of shell, imbibition core and the hydraulic fluid that is encapsulated in the pipe.At present, known heat pipe heat exchanger core capillary structure has copper powder sintering, the adherent dual mode of copper mesh, the former complex manufacturing, cost height, and latter's copper mesh and tube wall are difficult to be adjacent to, imbibition core capillary weak effect, its radiating effect instability.Application number is that to disclose a kind of capillary wick be the heat pipe of being made by metal-powder and nano carbon material mixed sintering for " heat pipe and preparation method thereof " application for a patent for invention of 200410015440.0, its imbibition core capacity of heat transmission is improved, the heat pipe for thermal conductivity performance also improves, but its manufacture craft is more complicated still, yield rate is low, and cost is also higher; And, still must be through sintering process, thereby it is still thicker and inhomogeneous as the sinter layer thickness of capillary wick, radially thermal resistance is also bigger for it, and in addition, the sinter layer alloy also is not good especially with combining of outer casing inner wall, do the time spent when being subjected to external force, alloy-layer also easily comes off, thereby, can't satisfy the needs of some electronic products.
Summary of the invention:
The technical problem to be solved in the present invention is: provide that a kind of imbibition core combines with base material closely, the capillary effect is remarkable, heat pipe is big and simple heat pipe of its preparation method of the little hot transmitted power of thermal resistance and preparation method thereof radially, though to solve existing heat pipe wicks capillary weak effect or the heat pipe wicks capillary is effective, heat conductivility is high but do the time spent when being subjected to external force, alloy-layer easily comes off and complex manufacturing technology, problem that cost is high.
The technical scheme that solves the problems of the technologies described above is: a kind of heat pipe, comprise a hollow bulb and end cap, be close to the capillary wick of hollow bulb inwall and be encapsulated in the interior hydraulic fluid of pipe, this capillary wick is the copper alloy particle deposition layer that is deposited on the hollow bulb inwall by electrochemical method.
It is the preparation method of heat pipe that is deposited on the copper alloy particle deposition layer of hollow bulb inwall by electrochemical method that the present invention also provides a kind of capillary wick, and it may further comprise the steps:
A, get the raw materials ready: hollow bulb and end cap that end closure one by one or both ends open are provided;
B, base material treatment: hollow bulb and end cap are carried out preliminary treatment, comprising:
Electrochemical deoiling---washing---chemical derusting---washing;
C, working face texturing are handled: insert electrode in hollow bulb, hollow tube shell joint positive pole, electrode connects negative pole, carries out electrochemical corrosion in specific electrolyte I, make the copper pipe inwall texturing phenomenon occur---be that the copper pipe inwall is corroded and produces several irregular small pits
Use the same method the end cap inwall is carried out working face texturing processing;
D, washing: hollow bulb and end cap after will handling through the working face texturing wash with running water;
E, electrochemically depositing copper roughened layer: hollow tube shell joint negative pole, electrode connects positive pole, in specific electrolyte II, carry out electrochemical deposition, make the hollow bulb inwall coarsening phenomenon occur---be that the copper pipe inwall produces irregular copper alloy particle, its deposit thickness is 0.2mm, its copper alloy particle granularity is 60 every square millimeter
Use the same method the end cap inwall is carried out the processing of electrochemically depositing copper roughened layer;
F: washing: hollow bulb and end cap after will handling through the electrochemically depositing copper roughened layer wash with running water;
G: chemical passivation: will put into passivating solution and carry out chemical passivation according to a conventional method through hollow bulb after the washing and end cap;
H, washing: will wash with running water through hollow bulb after the chemical passivation and end cap;
I, oven dry;
J, assembling, welding, injection hydraulic fluid: will be integrally welded through hollow bulb after the above-mentioned roughening treatment and end cap assembling, inject hydraulic fluid;
K: vacuumize, pacify sealing screw.
Because the capillary wick of heat pipe of the present invention is the copper alloy particle deposition layer that is deposited on the hollow bulb inwall by electrochemical method, it is closely firm with combining of base material, do the time spent when being subjected to external force, the alloy-layer difficult drop-off, and the capillary effect is remarkable, and radially little, the hot transmitted power of thermal resistance is big for heat pipe;
The capillary wick of heat pipe of the present invention is by the copper alloy particle of electrochemical method in hollow bulb inwall deposition one deck uniform and delicate, its committed step is texturing and alligatoring operation, as long as the composition of strict control texturing and alligatoring electrolyte I, II and concentration and time can be controlled the thickness of copper alloy particle deposition layer, thereby guarantee the finished product quality, good product quality, method are simple and practical, and cost is low.
Below, the technical characterictic to a kind of heat pipe of the present invention and preparation method thereof is further described in conjunction with the accompanying drawings and embodiments.
Description of drawings:
Fig. 1～Fig. 3: the structural representation of heat pipe of the present invention (installation diagram):
Fig. 1-master looks cutaway view, the left view of Fig. 2-Fig. 1,
The I portion partial enlarged drawing of Fig. 3-Fig. 1;
Fig. 4～Fig. 5: the hollow bulb structural representation that constitutes one of heat pipe of the present invention end opening:
Fig. 4-master looks cutaway view, the left view of Fig. 5-Fig. 4;
Fig. 6～Fig. 7: the end cover structure schematic diagram that constitutes heat pipe of the present invention:
Fig. 6-master looks cutaway view, the left view of Fig. 7-Fig. 6;
Fig. 8: the process chart of heat pipe preparation method of the present invention;
Fig. 9: working face texturing treatment process parts annexation schematic diagram;
Figure 10: electrochemically depositing copper roughened layer process components annexation schematic diagram;
Figure 11: heat pipe operation principle schematic diagram of the present invention.
Among the figure:
The 1-hollow bulb, 2-capillary wick 2,3-hydraulic fluid, 31-steam, the 4-end cap, 5-seals bolt, the 6-heat abstractor, 7-power supply, 8-copper electrode plate, 9-connects electrode, the 10-reaction vessel, 11-texturing treatment process electrolyte I, 12-working face electrochemically depositing copper roughened layer operation electrolyte II, A-evaporation ends (fire end), B-condensation end (colling end); F
1-caloric receptivity, F
2-thermal discharge, D
1-hollow bulb external diameter, D
2-end cap external diameter.
The specific embodiment:
Embodiment one:
A kind of heat pipe, comprise an end closure columnar hollow copper shell 1 and end cap 4, be close to the capillary wick 2 of hollow copper shell 1 inwall and be encapsulated in the hydraulic fluid 3 that is present in the shell in the capillary wick (referring to Fig. 1～Fig. 3), this capillary wick 2 is the copper alloy particle deposition layers that are deposited on hollow copper shell inwall by electrochemical method, this copper alloy particle deposition layer thickness is 0.2mm, its copper alloy particle granularity be 60 every square millimeter (referring to Fig. 1～Fig. 7).
The hydraulic fluid 3 of heat pipe of the present invention can adopt pure water or liquid such as alcohol or acetone.
As a kind of conversion of the embodiment of the invention, this copper alloy particle deposition layer thickness can increase or reduce, and is generally 0.1～1.0mm, and its copper alloy particle granularity is 50～100 every square millimeter.
As another conversion of the embodiment of the invention, described heat pipe also can be to be fixed together by welding manner by the hollow bulb 1 of both ends open and two end caps.
As a kind of conversion of the embodiment of the invention, the hollow bulb of described formation heat pipe also can be aluminum pipe or stainless steel tube, can also be that other thermal resistances are less and can carry out the metal tube of redox reaction with copper, as iron pipe or ferroalloy pipe.
The shape of heat pipe hollow bulb cross section of the present invention is generally circle, and as required, its cross section also can be the shape of ellipse or square or hexagon or other designing requirements, and the shape of cross section of end cap is identical with the shape of hollow bulb cross section.
Embodiment two:
A kind of preparation method of heat pipe may further comprise the steps (referring to Fig. 8):
A, get the raw materials ready: hollow bulb and end cap that end closure one by one or both ends open are provided;
B, base material treatment: hollow bulb and end cap are carried out preliminary treatment, comprising:
Electrochemical deoiling---washing---chemical derusting---washing;
C, working face texturing are handled: insert electrode in hollow bulb, hollow tube shell joint positive pole, electrode connects negative pole, in specific electrolyte I, carry out electrochemical corrosion, make the copper pipe inwall texturing phenomenon occur---be that the copper pipe inwall is corroded and produces several irregular small pits (referring to Fig. 9), texturing work of treatment temperature is a room temperature, current density: 10～20A/dm2, time: 15～30Sec;
Use the same method the end cap inwall is carried out working face texturing processing;
D, washing: hollow bulb and end cap after will handling through the working face texturing wash with running water;
E, electrochemically depositing copper roughened layer: hollow tube shell joint negative pole, electrode connects positive pole, in specific electrolyte II, carry out electrochemical deposition, make the hollow bulb inwall coarsening phenomenon occur---be that the copper pipe inwall produces irregular copper alloy particle, its deposit thickness is 0.2mm, and its copper alloy particle granularity is every square millimeter 60 (referring to Figure 10), operating temperature: 30～45 ℃, current density: 3～5A/dm2, time 30～60min;
Use the same method the end cap inwall is carried out the processing of electrochemically depositing copper roughened layer;
F: washing: hollow bulb and end cap after will handling through the electrochemically depositing copper roughened layer wash with running water;
G: chemical passivation: will put into passivating solution and carry out chemical passivation according to a conventional method through hollow bulb after the washing and end cap;
H, washing: will wash with running water through hollow bulb after the chemical passivation and end cap;
I, oven dry: carry out according to a conventional method;
J, assembling, welding, notes hydraulic fluid: will be integrally welded through hollow bulb after the above-mentioned roughening treatment and end cap assembling, inject hydraulic fluid;
K: vacuumize, pacify sealing screw.
The related parameter that has that used specific electrolyte I is handled in the described C of present embodiment, working face texturing is:
H2SO4 50～100ml/l
HCL 20～30ml/l
HNO3 10～15ml/l
Additive A-polyethylene glycol 3～5g/l
Metal inhibitor-thiocarbamide 10～20ml/l.
The related parameter that has of specific electrolyte II in described E, the electrochemically depositing copper roughened layer operation is:
H2SO4 50～80ml/l
Additive A-polyethylene glycol 0.01～0.05g/l
Sand copper agent-CuS-3 15～18ml/l.
As a kind of conversion of the embodiment of the invention, the consumption of the H2SO4 among the electrolyte I, HCL, HNO3 can increase and decrease respectively.
As another conversion of the embodiment of the invention, the additive A among electrolyte I, the electrolyte II-can also adopt lauryl sodium sulfate, OP emulsifying agent.
As another conversion of the embodiment of the invention, the metal inhibitor among the electrolyte I also can be without thiocarbamide, and adopts other to have the metal inhibitor of corrosion inhibition.
As a kind of conversion of the embodiment of the invention, the consumption of the CuSO4 H2SO4 among the electrolyte II also can increase and decrease respectively.
As another conversion of the embodiment of the invention, the sand copper agent among the electrolyte II also can be without CuS-3, and adopts other to have the sand copper agent of same function.
As a kind of conversion of the embodiment of the invention, described copper alloy particle deposition layer thickness can also increase and decrease, and is generally 0.1～1.0mm, and its copper alloy particle granularity is 50～100 every square millimeter.
As a kind of conversion of the embodiment of the invention, the hollow bulb of described making heat pipe also can be the hollow bulb of both ends open, and its corresponding end cap should be two.
As a kind of conversion of the embodiment of the invention, the hollow bulb of described making heat pipe also can be aluminum pipe or stainless steel tube, can also be that other thermal resistances are less and can carry out the metal tube of redox reaction with copper, as iron pipe or ferroalloy pipe.
The shape of heat pipe hollow bulb cross section of the present invention is generally circle, and as required, its cross section also can be the shape of ellipse or square or hexagon or other designing requirements, and the shape of cross section of end cap is identical with the shape of hollow bulb cross section.
Heat pipe of the present invention is a kind of in the heat pipe, heat pipe preparation method of the present invention is applicable to that making caliber is φ 6～50mm, length is the heat pipe of 20～1000mm, as required, also can make caliber less than φ 6mm, length less than 20mm or caliber greater than φ 50mm, length heat pipe greater than 1000mm.
The heat pipe operation principle of the present invention and the course of work following (referring to Figure 11):
The A end of heat pipe of the present invention is evaporator section, the B end is condensation segment, and when the evaporator section A of heat pipe end was heated, hydraulic fluid 3 carburation by evaporations in the capillary wick 2 formed steam 31, this steam 31 is at the dirty condensation segment B to heat pipe of small differential pressure action, and condenses into hydraulic fluid 3 and emit heat F simultaneously
2, hydraulic fluid 3 flows back to evaporator section A by capillarity along capillary wick 2 again, so circulation, heat F
1Constantly pass to the heat abstractor 6 of condensation segment B and the section of being condensed B by the evaporator section of heat pipe and to take away.
Claims (10)
1. heat pipe, comprise a hollow bulb and end cap, be close to the capillary wick of hollow bulb inwall and be encapsulated in the interior hydraulic fluid of pipe, it is characterized in that: this capillary wick is the copper alloy particle deposition layer that is deposited on the hollow bulb inwall by electrochemical method.
2. a kind of heat pipe according to claim 1 is characterized in that: the copper alloy particle deposition layer thickness that forms this capillary wick is 0.1～1.0mm, and its copper alloy particle granularity is 50～100 every square millimeter.
3. a kind of heat pipe according to claim 1 and 2 is characterized in that: the hollow bulb of described formation heat pipe is copper pipe, aluminum pipe, stainless steel tube, iron pipe or ferroalloy pipe.
4. the preparation method of a heat pipe, it is characterized in that: it may further comprise the steps:
A, get the raw materials ready: hollow bulb and end cap that end closure one by one or both ends open are provided;
B, base material treatment: hollow bulb and end cap are carried out preliminary treatment, comprising:
Electrochemical deoiling---washing---chemical derusting---washing;
C, working face texturing are handled: insert electrode in hollow bulb, hollow tube shell joint positive pole, electrode connects negative pole, carries out electrochemical corrosion in specific electrolyte I, make the copper pipe inwall texturing phenomenon occur---be that the copper pipe inwall is corroded and produces several irregular small pits
Use the same method the end cap inwall is carried out working face texturing processing;
D, washing: hollow bulb and end cap after will handling through the working face texturing wash with running water;
E, electrochemically depositing copper roughened layer: hollow tube shell joint negative pole, electrode connects positive pole, in specific electrolyte II, carry out electrochemical deposition, make the hollow bulb inwall coarsening phenomenon occur---be that the copper pipe inwall produces irregular copper alloy particle, its deposit thickness is 0.2mm, its copper alloy particle granularity is 60 every square millimeter
Use the same method the end cap inwall is carried out the processing of electrochemically depositing copper roughened layer;
F: washing: hollow bulb and end cap after will handling through the electrochemically depositing copper roughened layer wash with running water;
G: chemical passivation: will put into passivating solution and carry out chemical passivation according to a conventional method through hollow bulb after the washing and end cap;
H, washing: will wash with running water through hollow bulb after the chemical passivation and end cap;
I, oven dry;
J, assembling, welding, injection hydraulic fluid: will be integrally welded through hollow bulb after the above-mentioned roughening treatment and end cap assembling, inject hydraulic fluid;
K: vacuumize, pacify sealing screw.
5. the preparation method of a kind of heat pipe according to claim 4 is characterized in that: the parameter that used specific electrolyte I is handled in described C, working face texturing is:
H2SO4 50～100ml/l
HCL 20～30ml/l
HNO3 10～15ml/l
Additive A 3～5g/l
Metal inhibitor 10～20ml/l.
6. the preparation method of a kind of heat pipe according to claim 4, it is characterized in that: the parameter of the specific electrolyte II in the E of institute, the electrochemically depositing copper roughened layer operation is:
CuSO4 80～100g/l
H2SO4 50～80ml/l
Additive A 0.01～0.05g/l
Sand copper agent 15～18ml/l.
7. the preparation method of a kind of heat pipe according to claim 5 is characterized in that: described additive A is a kind of among polyethylene glycol or lauryl sodium sulfate or the OP emulsifying agent, and described metal inhibitor is a thiocarbamide.
8. the preparation method of a kind of heat pipe according to claim 6 is characterized in that: described additive A is a kind of among polyethylene glycol or lauryl sodium sulfate or the OP emulsifying agent, and the agent of described sand copper is CuS-3.
9. according to the preparation method of claim 4 or 5 or 6 or 7 or 8 described a kind of heat pipes, it is characterized in that: the related parameter that has of described C, working face texturing treatment process is:
Texturing work of treatment temperature room temperature
Current density 10～20A/dm2
Time 15～30Sec.
10. according to the preparation method of claim 4 or 5 or 6 or 7 or 8 described a kind of heat pipes, it is characterized in that: have related parameter to be in described E, the electrochemically depositing copper roughened layer operation:
30～45 ℃ of operating temperatures
Current density 3～5A/dm2
Time 30～60min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101248300A CN101165449A (en) | 2006-10-17 | 2006-10-17 | Heat pipe and its making method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101248300A CN101165449A (en) | 2006-10-17 | 2006-10-17 | Heat pipe and its making method |
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| CN101165449A true CN101165449A (en) | 2008-04-23 |
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| CNA2006101248300A Pending CN101165449A (en) | 2006-10-17 | 2006-10-17 | Heat pipe and its making method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192669A (en) * | 2010-03-05 | 2011-09-21 | 厦门格绿能光电有限公司 | Nanometer carbon fiber vacuum superconducting heat pipe and manufacturing method thereof |
| CN105806114A (en) * | 2016-04-28 | 2016-07-27 | 汤勇 | Preparation methods for novel multi-scale flat aluminum belt heat pipe |
| CN110806130A (en) * | 2019-11-14 | 2020-02-18 | 中山大学 | Loop heat pipe of electrodeposition evaporator and preparation method thereof |
| CN112126928A (en) * | 2020-09-10 | 2020-12-25 | 安徽德诠新材料科技有限公司 | Method for preparing heat pipe by vapor deposition |
| CN112713093A (en) * | 2020-12-29 | 2021-04-27 | 瑞声科技（南京）有限公司 | Preparation method of absorption core of heat dissipation element, absorption core and heat dissipation element |
| CN112760630A (en) * | 2020-12-25 | 2021-05-07 | 瑞声科技（南京）有限公司 | Manufacturing method of heat dissipation device and heat dissipation device |
| CN113237364A (en) * | 2021-04-25 | 2021-08-10 | 西安交通大学 | High-temperature heat pipe processing and manufacturing method |
| WO2022104875A1 (en) * | 2020-11-19 | 2022-05-27 | 瑞声声学科技(深圳)有限公司 | Vapor chamber upper cover plate manufacturing method and vapor chamber |
-
2006
- 2006-10-17 CN CNA2006101248300A patent/CN101165449A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192669A (en) * | 2010-03-05 | 2011-09-21 | 厦门格绿能光电有限公司 | Nanometer carbon fiber vacuum superconducting heat pipe and manufacturing method thereof |
| CN102192669B (en) * | 2010-03-05 | 2014-05-07 | 厦门格绿能光电股份有限公司 | Nanometer carbon fiber vacuum superconducting heat pipe and manufacturing method thereof |
| CN105806114A (en) * | 2016-04-28 | 2016-07-27 | 汤勇 | Preparation methods for novel multi-scale flat aluminum belt heat pipe |
| CN110806130A (en) * | 2019-11-14 | 2020-02-18 | 中山大学 | Loop heat pipe of electrodeposition evaporator and preparation method thereof |
| CN112126928A (en) * | 2020-09-10 | 2020-12-25 | 安徽德诠新材料科技有限公司 | Method for preparing heat pipe by vapor deposition |
| CN112126928B (en) * | 2020-09-10 | 2023-06-02 | 安徽德诠新材料科技有限公司 | Method for preparing heat pipe by vapor deposition |
| WO2022104875A1 (en) * | 2020-11-19 | 2022-05-27 | 瑞声声学科技(深圳)有限公司 | Vapor chamber upper cover plate manufacturing method and vapor chamber |
| CN112760630A (en) * | 2020-12-25 | 2021-05-07 | 瑞声科技（南京）有限公司 | Manufacturing method of heat dissipation device and heat dissipation device |
| CN112713093A (en) * | 2020-12-29 | 2021-04-27 | 瑞声科技（南京）有限公司 | Preparation method of absorption core of heat dissipation element, absorption core and heat dissipation element |
| CN113237364A (en) * | 2021-04-25 | 2021-08-10 | 西安交通大学 | High-temperature heat pipe processing and manufacturing method |
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Open date: 20080423 |