CN1804534A - Manufacturing method for porous structure layer of heat pipe - Google Patents
Manufacturing method for porous structure layer of heat pipe Download PDFInfo
- Publication number
- CN1804534A CN1804534A CNA2005100328695A CN200510032869A CN1804534A CN 1804534 A CN1804534 A CN 1804534A CN A2005100328695 A CNA2005100328695 A CN A2005100328695A CN 200510032869 A CN200510032869 A CN 200510032869A CN 1804534 A CN1804534 A CN 1804534A
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- embryo
- porous structure
- structure layer
- heat pipe
- metal tube
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Powder Metallurgy (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention relates to a method for producing the porous layer of heat pipe, which comprises: (1) processing at least one sheet of blank via molding the scrapper; (2) utilizing at least one blank to make the cylinder blank relative to the inner wall of metallic pipe; (3) arranging said cylinder blank into the metallic pipe; (4) sintering the metallic pipe inside the cylinder blank to attain porous layer. The invention fills the blanks with different particles into the metallic pipe to attain the porous layer wit different diameters, therefore, the size distribution of holes are easily to be controlled.
Description
[technical field]
The present invention is relevant with heat pipe, refers to a kind of manufacture method of porous structure layer for heat pipe especially.
[background technology]
Along with large scale integrated circuit continuous advancement in technology and extensive use, the development of information industry is advanced by leaps and bounds, and the high-frequency high-speed processor is constantly released.Because making, high-frequency high-speed operation produces a large amount of heats in the processor unit interval, to cause the rising of processor self temperature as these heats of untimely eliminating, safety and performance to system make a big impact, the essential problem that solves when at present heat dissipation problem has become high speed processor of new generation and releases.
Because radiating requirements is improved constantly, new-type heat abstractor constantly occurs.It is exactly wherein a kind of that heat pipe is applied to electronic element radiating, temperature remained unchanged and can absorb or emit the principle work of a large amount of heats when it utilized liquid to change between gas, liquid binary states, changed the traditional heat-dissipating device limited situation of efficient with the heat radiation of metal fever conduction pattern merely.Heat pipe is the liquid that an amount of heat of vaporization height of splendid attire, good fluidity, chemical property are stable in a sealing low pressure tubular shell, boiling point is lower, as water, ethanol, acetone etc., utilize this liquid to be heated and cool off and when between gas, liquid binary states, changing, absorb or emit a large amount of heats and make heat pass to the other end rapidly by body one end.
Generally on the heat pipe internal face, porous structure layer is set, produces capillary force by this porous structure layer and drive condensed liquid backflow.And because capillary force and porous structure layer pore size are inversely proportional to, promptly the more little capillary force of the diameter of hole is big more, and therefore for to reach bigger capillary force, the aperture of employed porous material layer hole is the smaller the better.Yet because fluid aperture by runner in flow process is more little, frictional resistance that fluid is suffered and viscous force are big more, and the resistance that therefore makes liquid reflux increases, flow velocity diminishes.When the heat pipe heat absorbing end absorbed heat and increases, evaporation was accelerated, and liquid is because backflow resistance and speed reduces can't replenish the evaporating liquid of heat absorbing end rapidly.Cause dry combustion method easily, damage heat pipe.So the pore size of porous structure layer for heat pipe and the performance that distribution of pores directly influences heat pipe, so hope can provide a kind of manufacture method that can effectively control the heat pipe of pore size distribution.
[summary of the invention]
Technical problem to be solved by this invention provides a kind of manufacture method that is easy to control the porous structure layer for heat pipe of porous structure layer for heat pipe distribution of pores.
For solving the technology of the present invention problem, the manufacture method of porous structure layer for heat pipe of the present invention may further comprise the steps: 1) make at least one sheet via the scraper moulding and give birth to embryo; 2) utilizing aforementioned at least one sheet to give birth to embryo makes and the living embryo of the corresponding tubular of the inner wall of metal tube of heat pipe; 3) this tubular being given birth to embryo inserts in the metal tube; 4) this metal tube of having inserted the living embryo of tubular is carried out sintering, form porous structure layer.
The manufacture method of porous structure layer for heat pipe of the present invention is inserted the porous structure layer that sintering in the metal tube forms different apertures again by making the different living embryo of granular size, is easy to control the distribution of pore size.
[description of drawings]
Fig. 1 is a heat pipe schematic cross-section vertically.
Fig. 2 is a heat pipe schematic cross-section radially.
Fig. 3 is the manufacture method flow chart of porous structure layer for heat pipe of the present invention.
Fig. 4 is that banded schematic diagram of giving birth to embryo is made in the scraper moulding.
Fig. 5 is the schematic diagram that sheet is given birth to embryo.
Fig. 6 is that sheet is given birth to the schematic diagram that the embryo volume is located at the living embryo of pull bar outer surface formation tubular.
Fig. 7 is that pull bar and tubular are given birth to the schematic diagram that embryo is inserted metal tube.
Fig. 8 is that the living embryo of tubular is inserted the cutaway view in the metal tube.
Fig. 9 is another heat pipe structure schematic cross-section radially with double-layer porous structure sheaf.
Figure 10 is that double-deck sheet is given birth to the schematic diagram that the embryo volume is established the living embryo of formation double tubular.
Figure 11 is that the living embryo of double tubular is inserted the cutaway view in the metal tube.
[specific embodiment]
With reference to the accompanying drawings, the invention will be further described in conjunction with the embodiments.
As shown in Figures 1 and 2, heat pipe 100 comprises the metal tube 10 of hollow and sealing and is located at the porous structure layer 30 of metal tube 10 internal faces, this metal tube 10 can be made by copper or other heat conductivility good metal, the cross section of metal tube 10 is rounded, be appreciated that ground, the cross section of metal tube 10 also can be other shapes such as polygon, is square as its cross section of plate shape heat pipe.State and be filled with an amount of hydraulic fluid is evacuated in the metal tube 10.
Be illustrated in figure 3 as the porous structure layer 30 manufacture method flow charts of heat pipe 100 of the present invention, introduce the manufacture method of the porous structure layer 30 of heat pipe 100 of the present invention below in conjunction with Fig. 4 to Fig. 8 in detail:
At first, make sheet by the scraper legal system and give birth to embryo 420, it is to be used for this porous structure layer 30 of sinter molding that this sheet is given birth to embryo 420.
At first make the banded embryo 40 of giving birth in this process with the scraper moulding, be illustrated in figure 4 as the scraper moulding and make banded schematic diagram of giving birth to embryo 40, making the banded embryo 40 required slurries 400 of giving birth to places in the feed arrangement 300 of make-up machine, this slurry 400 is that powder, solvent and the binding agent by proper proportion mixes, and wherein the shared mass percent of powder, solvent and binding agent is about 40-80%, 10-40% and 5-25% respectively.Powder can be ceramic powders, metal dust such as copper powder etc., solvent adopts organic solvent, as ethanol, toluene etc., can impel the dispersion of powder and when volatilization, form micro-pore, binding agent adopts the material with Yi Rong and easy burnoff characteristics, as polyvinyl alcohol (Polyvinyl Alcohol is called for short PVA) or polyvinyl butyral resin (Polyvinyl Butyral is called for short PVB) etc.Scraper 200 places the discharging opening 31O place of feed arrangement 300, when flowing out discharging opening 310, slurry 400 is processed into the banded embryo 40 of giving birth to through scraper 200, banded then living embryo 40 transfers out through conveyer belt 500, in the process that transmits, band shape is given birth to embryo 40 processing of desolvating, as infrared facility 600 irradiation, the also available baking box alternate manners such as baking of heating.In the contained solvent that desolvates when handling in the slurry 400 volatilization of being heated, binding agent is deposited on banded lower surface formation adhesive layer 410 of giving birth to embryo 40 mostly.
As shown in Figure 5, then the living embryo 40 of above-mentioned band shape after desolvating is cut into and the living embryo 420 of the corresponding sheet of metal tube 10 internal faces size, correspondingly the living embryo 420 of this sheet comprises an adhesive layer 430.
Secondly, make tubular and give birth to embryo 50.
As shown in Figure 6, one pull bar 60 at first is provided, this pull bar 60 can adopt solid stainless steel barred body, the shape of cross section of pull bar 60 is circular, be appreciated that ground, the shape of cross section of this pull bar 60 also can be other shapes such as ellipse, square, triangle, and its shape is decided according to heat pipe 100 shape of cross sections.Then the living embryo 420 of sheet is established along the outer surface volume of pull bar 60 and formed the living embryo 50 of tubular, the upper surface that this tubular is given birth to embryo 50 contacts with pull bar 60, and the adhesive layer 51O of the living embryo 50 of tubular toward the outer side.
Then, as shown in Figures 7 and 8, above-mentioned volume is located at the living embryo 50 of tubular of pull bar 60 outer surfaces and is inserted in the lump in the still unsealed metal tube 10 with pull bar 60, the adhesive layer 510 that tubular is given birth to embryo 50 contacts with the internal face of metal tube 10.Make pull bar 60 give birth to embryo 50 to tubular by rotating tension bar 60 then and apply radial effect power, make tubular give birth to embryo 50 is pasted on metal tube 1O by the binding agent in its adhesive layer 510 internal face along metal tube 10 inwall circumference.
At last, above-mentioned metal tube 10 of having inserted the living embryo 50 of tubular is carried out sintering, at first slowly be heated to 450-500 ℃, the binding agent cracking that this moment, tubular was given birth in the embryo 50 also produce CO
2Discharge outside the living embryo 50 of tubular Deng gas, be heated to 500-980 ℃ and kept about 10-60 minute then, make the combination that metallographic takes place between the powder particle in the living embryo 50 of tubular, thereby form porous structure layer 30 as shown in Figures 1 and 2, promptly finish the making of the porous structure layer 30 of heat pipe 100 thus.
In this sintering process, pull bar 60 can be remained in the metal tube 10, extract out after the end to be sintered, also can before sintering, extract out, and then carry out sintering.
After the making of finishing above-mentioned porous structure layer 30, vacuumize and seal to metal tube 10 filling hydraulic fluids and to metal tube 10, can obtain heat pipe 100.
In above-mentioned processing procedure, only in metal tube 10, insert one deck tubular and give birth to embryo 50, thus the porous structure layer 30 that tubular is given birth to that binding agent cracking in sintering process in the embryo 50 form that gases overflow, combination that metallographic takes place between powder particle forms individual layer.If varying in size of slurry 400 powder particle that adopts, the pore size of the hole of the porous structure layer that forms 30 is also different after its sintering, therefore can make different living embryos by the slurry of selecting different big or small powder particles for use, after sintering obtains the porous structure layer in different apertures.Be appreciated that ground, can also make a plurality of different living embryos by selecting the different slurry of various powders particle for use, then described variant living embryo is inserted respectively in the copper pipe, last sintering forms the porous structure layer structure of multilayer.
As Fig. 9 to the manufacturing process schematic diagram that Figure 11 shows that double-layer porous structure sheaf.At first as shown in Figure 9, heat pipe 100 ' comprises metal tube 10 and is located at the porous structure layer 30 ' of metal tube 10 internal faces that this porous structure layer 30 ' comprises less relatively internal layer of a pore diameter 32 and the relatively large skin 34 of a pore diameter.
As shown in figure 10, when making above-mentioned multilayer porous structure, particularly layer 30 ', select for use the slurry of different powder particles to make living embryo 52 of internal layer and the outer embryo 54 of giving birth at first respectively, wherein internal layer is given birth to the powder particle of the powder particle of embryo 52 selected slurries less than the living embryo 54 selected slurries of skin.Secondly, internal layer is given birth to embryo 52 be rolled into cylindricly along pull bar 60 outer surfaces, outerly give birth to outer surface that embryo 54 gives birth to embryo 52 along internal layer and be rolled into cylindricly, roll up and be located on the outer surface of pull bar 60 thereby should inside and outside layer give birth to embryo 52,54 layerings.
As shown in figure 11, then above-mentioned inside and outside layer is given birth to embryo 52,54 and pull bar 60 inserts in the metal tube 10 in the lump, bondingly between the embryo 52,54 make the outer embryo 54 of giving birth to bonding simultaneously by pull bar 60 application of forces being made inside and outside layer give birth to equally with metal tube 10 inwalls.
Make inside and outside layer give birth to binding agent cracking in the embryo 52,54 by sintering at last and discharge and give birth to outside the embryo 52,54, form as shown in Figure 9 porous structure layer 30 ' respectively thereby give birth to the combination that metallographic takes place between powder particle in the embryo 52,54.
Be appreciated that ground, can make three layers or more multi-layered porous structure layer equally.And different living embryos is rolled up the order difference of establishing and also can be made pore size and arrange different multilayer porous structure, particularly layers outside pull bar, Figure 9 shows that the porous structure layer that increases progressively along the aperture radially outward of metal tube 10, be located at pull bar 60 outer surfaces if will give birth to embryo 54 volumes earlier, to give birth to embryo 52 then and be rolled into tubular, then form the porous structure layer that successively decreases along the pore diameter radially outward of metal tube 10 along giving birth to embryo 54 outer surfaces.
The present invention inserts in the metal tube by making different living embryos again, forms different porous structure layers through sintering, and processing procedure is simple and be easy to control the distribution of pores of porous structure layer.
Claims (12)
1. the manufacture method of a porous structure layer for heat pipe may further comprise the steps:
1) makes at least one sheet via the scraper moulding and give birth to embryo;
2) utilizing aforementioned at least one sheet to give birth to embryo makes and the living embryo of the corresponding tubular of the inner wall of metal tube of heat pipe;
3) this tubular being given birth to embryo inserts in the metal tube;
4) this metal tube of having inserted the living embryo of tubular is carried out sintering, form porous structure layer.
2. the manufacture method of porous structure layer for heat pipe as claimed in claim 1 is characterized in that: make the composition that this at least one sheet gives birth to the slurry of embryo and comprise powder, solvent and binding agent.
3. the manufacture method of porous structure layer for heat pipe as claimed in claim 2, it is characterized in that: the shared mass percent of the powder of this slurry, solvent and binding agent is respectively 40-80%, 10-40% and 5-25%.
4. the manufacture method of porous structure layer for heat pipe as claimed in claim 2, it is characterized in that: the powder of this slurry is metal dust or ceramic powders.
5. the manufacture method of porous structure layer for heat pipe as claimed in claim 2 is characterized in that: step 2) in sheet is given birth to embryo be rolled into tubular to give birth to embryo be this sheet to be given birth to embryo roll in the outer surface of a pull bar.
6. the manufacture method of porous structure layer for heat pipe as claimed in claim 5, it is characterized in that: comprise the living embryo of sheet that the different slurry making powder particle of choice of powder granular size varies in size in the step 1), the sheet that each powder particle varies in size in the step 3) is given birth to embryo and successively is rolled into tubular along pull bar.
7. the manufacture method of porous structure layer for heat pipe as claimed in claim 6, it is characterized in that: each sheet is given birth to embryo and successively is rolled into tubular along pull bar by the mode that the powder particle size increases progressively, thereby the aperture that is formed at the porous structure layer in the metal tube is radially outward increased progressively along metal tube.
8. the manufacture method of porous structure layer for heat pipe as claimed in claim 6, it is characterized in that: the mode that the living embryo of each sheet successively decreases by the powder particle size successively is rolled into tubular along pull bar, thereby is radially outward successively decreased along metal tube in the aperture that is formed at the porous structure layer in the metal tube.
9. as the manufacture method of any described porous structure layer for heat pipe in the claim 5 to 8, it is characterized in that: pull bar is inserted in the metal tube in the lump and is rotated this pull bar with giving birth to embryo in the step 3), makes pull bar make living embryo bonding by binding agent and metal tube wall along the inner wall of metal tube circumference to giving birth to the embryo application of force.
10. the manufacture method of porous structure layer for heat pipe as claimed in claim 9 is characterized in that: this pull bar took out before sintering.
11. the manufacture method of porous structure layer for heat pipe as claimed in claim 9 is characterized in that: to be sintered the finishing afterwards of this pull bar taken out.
12. the manufacture method of porous structure layer for heat pipe as claimed in claim 2, it is characterized in that: step 4) comprises that at first being heated to the 450-500 ℃ of binding agent cracking that tubular is given birth in the embryo discharges outside the living embryo of tubular, is heated to then between 500-980 ℃ of powder particle that makes in the living embryo of tubular the metallographic combination takes place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100328695A CN100343613C (en) | 2005-01-15 | 2005-01-15 | Manufacturing method for porous structure layer of heat pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100328695A CN100343613C (en) | 2005-01-15 | 2005-01-15 | Manufacturing method for porous structure layer of heat pipe |
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| Publication Number | Publication Date |
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| CN1804534A true CN1804534A (en) | 2006-07-19 |
| CN100343613C CN100343613C (en) | 2007-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100328695A Expired - Fee Related CN100343613C (en) | 2005-01-15 | 2005-01-15 | Manufacturing method for porous structure layer of heat pipe |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445097A (en) * | 2011-09-20 | 2012-05-09 | 华东理工大学 | High-efficiency gravity heat pipe and manufacturing method thereof |
| CN102735086A (en) * | 2011-04-13 | 2012-10-17 | 奇鋐科技股份有限公司 | Heat pipe manufacturing method |
| TWI688741B (en) * | 2018-10-12 | 2020-03-21 | 廣州力及熱管理科技有限公司 | Method for making ultra-thin heat pipe plate with printing wick structure |
| CN111043886A (en) * | 2018-10-12 | 2020-04-21 | 广州力及热管理科技有限公司 | Method for manufacturing ultrathin hot tube plate with printed capillary structure |
| CN111380388A (en) * | 2019-12-31 | 2020-07-07 | 苏州天脉导热科技股份有限公司 | Processing technology of copper powder capillary structure for ultrathin soaking plate |
| TWI710744B (en) * | 2019-04-15 | 2020-11-21 | 廣州力及熱管理科技有限公司 | Manufacturing method of a thin vapor chamber |
| CN113218224A (en) * | 2020-01-21 | 2021-08-06 | 华为技术有限公司 | Manufacturing method of soaking plate and soaking plate |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1495627A1 (en) * | 1987-07-06 | 1989-07-23 | Белорусское республиканское научно-производственное объединение порошковой металлургии | Method of manufacturing capillary porous structure of heat pipe |
| JP3960017B2 (en) * | 2001-11-15 | 2007-08-15 | 三菱マテリアル株式会社 | Heat pipe manufacturing method |
| JP2003155503A (en) * | 2001-11-15 | 2003-05-30 | Mitsubishi Materials Corp | Method for manufacturing porous metal |
| CN1506650A (en) * | 2002-12-13 | 2004-06-23 | 徐惠群 | Sintered heat pipe capillary structure |
| CN100370207C (en) * | 2004-02-20 | 2008-02-20 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe and its preparation method |
-
2005
- 2005-01-15 CN CNB2005100328695A patent/CN100343613C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735086A (en) * | 2011-04-13 | 2012-10-17 | 奇鋐科技股份有限公司 | Heat pipe manufacturing method |
| CN102445097A (en) * | 2011-09-20 | 2012-05-09 | 华东理工大学 | High-efficiency gravity heat pipe and manufacturing method thereof |
| CN102445097B (en) * | 2011-09-20 | 2013-10-16 | 华东理工大学 | High-efficiency gravity heat pipe and manufacturing method thereof |
| TWI688741B (en) * | 2018-10-12 | 2020-03-21 | 廣州力及熱管理科技有限公司 | Method for making ultra-thin heat pipe plate with printing wick structure |
| CN111043886A (en) * | 2018-10-12 | 2020-04-21 | 广州力及热管理科技有限公司 | Method for manufacturing ultrathin hot tube plate with printed capillary structure |
| CN111043886B (en) * | 2018-10-12 | 2021-05-25 | 广州力及热管理科技有限公司 | Method for manufacturing ultrathin hot tube plate with printed capillary structure |
| TWI710744B (en) * | 2019-04-15 | 2020-11-21 | 廣州力及熱管理科技有限公司 | Manufacturing method of a thin vapor chamber |
| CN111380388A (en) * | 2019-12-31 | 2020-07-07 | 苏州天脉导热科技股份有限公司 | Processing technology of copper powder capillary structure for ultrathin soaking plate |
| CN113218224A (en) * | 2020-01-21 | 2021-08-06 | 华为技术有限公司 | Manufacturing method of soaking plate and soaking plate |
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| Publication number | Publication date |
|---|---|
| CN100343613C (en) | 2007-10-17 |
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