CN100533039C - Manufacture method of heat pipe - Google Patents
Manufacture method of heat pipe Download PDFInfo
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- CN100533039C CN100533039C CNB2005100337410A CN200510033741A CN100533039C CN 100533039 C CN100533039 C CN 100533039C CN B2005100337410 A CNB2005100337410 A CN B2005100337410A CN 200510033741 A CN200510033741 A CN 200510033741A CN 100533039 C CN100533039 C CN 100533039C
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Abstract
The present invention relates to a manufacture method of heat pipe. Said method includes the following steps: using scraper forming tool to make slurry material into several flake green bodies with different granule sizes; connecting said flake green bodies, rolling them and making them be formed into a multi-layer multi-section integrated cylindrical green body; placing said cylindrical green body into pipe body interior of heat pipe; sintering pipe body in which the cylindrical green body is placed; filling working liquid into the pipe body, evacuating and sealing so as to obtain the invented heat pipe with high performance.
Description
[technical field]
The invention relates to a kind of manufacture method of heat pipe, refer to a kind of manufacture method especially with heat pipe of three-dimensional gradient capillary structure layer.
[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, the high-frequency high-speed processor is constantly released, and because the high-frequency high-speed operation makes the processor unit interval produce a large amount of heats, 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 releasing that heat dissipation problem has become high speed processor of new generation.
At present, because heat pipe has heat transfer rate faster, and be widely used in the electronic element radiating field.Heat pipe commonly used comprises that one has the sealing tubular shell of certain vacuum degree, and is provided with the capillary structure layer that sintering forms and is filled with an amount of hydraulic fluid in housing in housing, and this heat pipe one end is an evaporation ends and the other end is a condensation end.When the heat pipe evaporation ends is heated, the hydraulic fluid carburation by evaporation, steam condenses into liquid after condensation end is emitted heat flowing under the small pressure reduction, and liquid is back to the heat pipe evaporation ends by the capillary pressure difference that capillary structure layer produces, thereby makes heat be back to condensation end rapidly by the heat pipe evaporation ends.So, the service behaviour of heat pipe is subjected to the influence of capillary pressure difference and backflow resistance two factors, this two factor changes along with the size of the capillary porosity of capillary structure, when the capillary porosity hour, it is poor that it has big capillary pressure, can drive coagulating liq enters in the capillary structure and refluxes to evaporation ends, but then, the frictional force and the viscous force that reduce hydraulic fluid is refluxed of capillary porosity increase, be that hydraulic fluid backflow resistance increases, cause the hydraulic fluid back-flow velocity slow, easily make heat pipe in evaporation ends generation dry combustion method phenomenon, and when the capillary porosity is big, though hydraulic fluid is subjected to less backflow resistance, but coagulating liq sucks the capillary pressure difference of capillary structure to be reduced thereupon, reduce the hydraulic fluid capacity of returns, can make heat pipe in evaporation ends generation dry combustion method phenomenon equally, therefore for satisfying higher capillary force and low backflow resistance simultaneously, a kind of capillary structure layer with three-dimensional gradient-porosity is set in heat pipe, but the distribution of pores of the wayward heat tube capillary structure layer of existing sintering processing influences properties of hot pipe.
[summary of the invention]
Making the mesopore uppity problem that distributes for solving above-mentioned heat pipe, is a kind of heat control making method that is easy to control heat tube capillary structure layer distribution of pores of example explanation with embodiment at this.
This embodiment heat control making method may further comprise the steps: make and give birth to embryo, make the some kinds of different sheets of granular size via the scraper moulding and give birth to embryo; The winding volume is established, and living embryo winding of the sheet that above-mentioned some kinds of granular sizes are different and volume are established formation integral type tubular and given birth to embryo, and the living embryo of this tubular radially comprises the several layers that granular size is different, and each layer comprises the plurality of sections that granular size is different vertically; Insert, tubular is given birth to embryo insert in the body of heat pipe; Sintering carries out sintering to the body of inserting the living embryo of tubular; Seal, in body, fill hydraulic fluid, vacuumize and seal.
This heat control making method forms the different multilayer multistage capillary structure layer of pore size by making the different living embryo of granular size behind sintering, be easy to control the distribution of pores of heat tube capillary structure layer, promotes the performance of heat pipe.
[description of drawings]
Fig. 1 is a heat pipe schematic cross-section vertically.
Fig. 2 is a heat control making method flow chart.
Fig. 3 is that the banded embryo schematic diagram of giving birth to is made in the scraper moulding.
Fig. 4 is that sheet is given birth to the embryo schematic diagram.
Fig. 5 is that sheet is given birth to the embryo formed lamellar body schematic diagram that is fixed as one
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 the living embryo of pull bar and tubular is inserted the cutaway view in the body.
[specific embodiment]
With reference to the accompanying drawings, be described further in conjunction with the embodiments.
As shown in Figure 1, heat pipe comprises a body 10, is located at the capillary structure layer 30 of body 10 internal faces and is filled in hydraulic fluid in the body 10.
Heat pipe one end is and the contacted evaporation ends 12 of heater element, the other end of heat pipe is to match with other heat dissipation element, the heat that evaporation ends 12 is absorbed is distributed to the condensation end 16 in the external environment, establish between this condensation end 16 and the evaporation ends 12 one with the extraneous adiabatic section 14 that does not have heat exchange substantially, the length of the evaporation ends 12 of this heat pipe, adiabatic section 14, condensation end 16 can be set according to actual needs, and the length of the evaporation ends 12 of heat pipe, adiabatic section 14, condensation end 16 about equally in the present embodiment.
Middle level 34 forms a middle level evaporator section 342, adiabatic section, a middle level 344, a middle level condensation segment 346 respectively corresponding to evaporation ends 12, adiabatic section 14, condensation end 16 positions of heat pipe, the hole maximum of middle level condensation segment 346, the hole minimum of adiabatic section, middle level 344, the pore size of middle level evaporator section 342 is placed in the middle, between adiabatic section, middle level 344 and middle level condensation segment 346.
Outer 36 evaporation ends 12 corresponding to heat pipe, adiabatic section 14, condensation end 16 positions form an outer evaporator section 362, a secondary insulation section 364, one outer condensation segment 366 respectively, the hole maximum of secondary insulation section 364, the hole minimum of outer evaporator section 362, the pore size of outer condensation segment 366 is placed in the middle, between outer evaporator section 362 and secondary insulation section 364.
Be illustrated in figure 2 as heat control making method flow chart, introduce the manufacture method of heat pipe below in conjunction with Fig. 3 to Fig. 7 in detail.
At first, make sheet and give birth to embryo 50,50 ', 50 ", promptly make the different sheet of large, medium and small three kinds of granular sizes by the scraper method and give birth to embryo 50,50 ', 50 ", this sheet is given birth to embryo 50,50 ', 50 " be to be used for this capillary structure layer 30 of sinter molding.
As shown in Figure 3, at first make the different band shape of large, medium and small three kinds of granular sizes in this process and give birth to embryo 70,70 ', 70 with the scraper moulding "; by in the feed arrangement 300 of make-up machine, inserting the different slurry of large, medium and small three kinds of granular sizes 100,100 ', 100 respectively ", make the different band shape of large, medium and small three kinds of granular sizes respectively through the scraper moulding then and give birth to embryo 70,70 ', 70 ".
With bulky grain slurry 100 is example, and slurry 100 is to be mixed by the powder of proper proportion, solvent and binding agent, 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, be called for short PVA) or polyvinyl butyral resin (Polyvinyl Butyral is called for short PVB) etc.
Scraper 200 places discharging opening 310 places of feed arrangement 300, when flowing out discharging opening 310, slurry 100 is processed into the banded embryo 70 of giving birth to through scraper 200, banded then living embryo 70 transfers out through conveyer belt 400, in the process that transmits, band shape is given birth to embryo 70 processing of desolvating, as infrared facility 500 irradiation, the also available baking box alternate manners such as oven dry of heating.In the contained solvent that desolvates when handling in the slurry 100 volatilization of being heated, binding agent is deposited on banded lower surface formation adhesive layer 72 of giving birth to embryo 70 mostly.
Select for use the slurry 100 ' of medium grain size to give birth to embryo 70 ' by the band shape that above-mentioned processing procedure can obtain the medium grain size, in like manner, select the slurry 100 of smallest particles for use " band shape that can obtain smallest particles gives birth to embryo 70 ", the banded embryo 70 ', 70 of giving birth to " lower surface be formed with knot agent layer 72 respectively.
As shown in Figure 4, then the different band shape of above-mentioned three kinds of granular sizes is given birth to embryo 70,70 ', 70 " carry out cutting and form the different sheet of large, medium and small three kinds of granular sizes and give birth to embryo 50,50 ', 50 ", each sheet is given birth to embryo 50,50 ', 50 " comprise an adhesive layer 52, and make each sheet give birth to embryo 50,50 ', 50 " big or small basic identical and be substantially equal to three minutes of body 10 internal face areas one.
Also can be in this process by selecting the scraper of suitable specification for use, thereby directly obtain the different sheet of the suitable various granular sizes of size and give birth to embryo 50,50 ', 50 ", and not necessarily at first obtain the banded embryo 70,70 ', 70 of giving birth to " after just can finish sheet through cutting again and give birth to embryo 50,50 ', 50 " making.
Secondly, winding and volume are established and are formed the living embryo 90 of tubular.
At first that various granular sizes are different sheet is given birth to embryo 50,50 ', 50 " winding becomes one.
Select sheet to give birth to embryo 50,50 ', 50 " each a slice; and press the internal layer lamellar body 54 that particle order from big to small closely arrange to form rectangular stratiform piecewise; and make each sheet life embryo 50; 50 '; 50 " adhesive layer 52 place the same side, the same sheet of selecting is given birth to embryo 50 ', 50 "; 50 press particle in; little; lamellasome 56 during big order is arranged and formed; as to select sheet to give birth to embryo 50 then ", 50,50 ' each a slice is pressed the little of particle, greatly, in order arrange to form outer lamellar body 58, at last with internal layer lamellar body 54, middle lamellasome 56, outer lamellar body 58 is folded mutually to be established, make internal layer lamellar body 54 be positioned at the superiors, outer lamellar body 58 is positioned at outermost layer, and the adhesive layer 52 that guarantees each lamellasome simultaneously is towards the below.
Pass through pressure sintering then, promptly the sheet after this arrangement is given birth to embryo 50,50 ', 50 " heat; adhesive layer 52 these internal layer lamellar bodies 54, middle lamellasome 56 and the outer lamellar body 58 of giving birth in the embryo 50 by each sheet are bonded as one the lamellar body that forms one or three layers of syllogic mutually, as shown in Figure 5.Be appreciated that ground, also can at first every lamellasome be fixed, by hot pressing each lamellasome is fixed as one again, perhaps fix also finally being fixed as one piecewise by hot pressing.In addition, also can each sheet be given birth to embryo by modes such as stickups is fixed as one.
In like manner, also can arrange at first piecemeal, then three sections windings are integral, promptly select for use sheet to give birth to embryo 50,50 ', 50 " each a slice is pressed particle and is successively arranged the capillary structure part that forms corresponding heat pipe evaporation ends 12 from big to small from top to bottom; select for use sheet to give birth to embryo 50 ' in addition; 50 ", 50 each a slice are pressed particle therefrom, little, big order is successively arranged the capillary structure part that forms corresponding heat pipe adiabatic section 14 from top to bottom, in like manner, select for use sheet to give birth to embryo 50 "; 50; 50 ' each a slice press particle from little; big; in order successively arrange the capillary structure part that forms corresponding heat pipe condensation end 14 from top to bottom; then these three sections capillary structures are arranged in proper order, same mode by hot pressing or stickup is fixed as one.
The winding mode that above-mentioned each sheet is given birth to embryo is not limited to successively or arranges piecemeal, as long as each sheet is given birth to embryo 50,50 ', 50 " arrange by the order of granular size is same.
As shown in Figure 6, provide a pull bar 600 then, this pull bar 600 can adopt solid stainless steel barred body, and the shape of cross section of pull bar 600 is circular, is appreciated that ground, and the shape of cross section of this pull bar 600 also can be other shapes such as ellipse, square, triangle.Then the lamellar body that is bonded as one is established along the outer surface volume of pull bar 600 and is formed tubular and give birth to embryo 90, internal layer lamellar body 54 is contacted with the outer surface of pull bar 600, and each sheet life embryo 50,50 ', 50 in the outer lamellar body 58 " adhesive layer 52 toward the outer side.
Above-mentioned manufacturing process is that sheet is given birth to embryo 50,50 ', 50 " thus the volume that at first is fixed as one then be located at pull bar 600 and form tubulars and give birth to embryo 90; in this process; also each sheet can be given birth to embryo 50,50 ', 50 " successively volume is located on the pull bar 600 piecewise, as long as its arrangement mode is identical can be in finally obtaining same capillary structure layer 30.
Once more, tubular being given birth to embryo 90 inserts in the body 10.
As shown in Figure 7, above-mentioned volume is located at the living embryo 90 of tubular of pull bar 600 outer surfaces and is inserted in the lump in the still unsealed body 10 with pull bar 600, the adhesive layer 52 that tubular is given birth to embryo 90 contacts with the internal face of body 10.Make pull bar 600 give birth to embryo 90 to tubular by rotating tension bar 600 then and apply radial effect power, make tubular give birth to embryo 90 is pasted on body 10 by the binding agent in its adhesive layer 52 internal face along body 10 inwall circumference.
Then, body 10 is carried out sintering.
At first slowly be heated to 450-500 ℃, tubular was given birth to the binding agent cracking in the embryo 90 and was produced CO this moment
2Deng gas discharge tubular give birth to embryo 90 outside, be heated to 500-980 ℃ and kept about 10-60 minute then, tubular is given birth between powder particle in the embryo 90 combination of metallographic takes place, thereby form capillary structure layer 30 as shown in Figure 1.
In this sintering process, pull bar 600 can be remained in the body 10, extract out after the end to be sintered, also can before sintering, extract out, and then carry out sintering.
At last, in body 10, fill hydraulic fluid and body 10 is vacuumized and seals, can obtain this heat pipe.
This heat control making method is made different the livings embryo of granular size by selecting the different slurry of granular size, and the living embryo that each granular size is different arranges by different orders, can obtain the capillary structure layer of different aperture distribution behind sintering.And each gives birth to the length of embryo, thickness with and the size of particle all can set according to actual needs, then can form the living embryo of tubular that each segment length differs as the length difference of giving birth to embryo, then form the different capillary structure layer of each segment length behind the sintering, the thickness difference of giving birth to embryo then can form the living embryo of tubular that each layer thickness differs, then form the different capillary structure layer of each layer thickness behind the sintering, in like manner, the thickness of each section also can differ in every layer, and the length of each layer also can differ in every section, after sintering, can form the capillary structure layer that various different aperture distribute, thereby be convenient to control the distribution of pores of capillary structure layer in the heat pipe.
Above-mentioned embodiment is to be example with three layers of syllogic capillary structure, equally also can need to form more kinds of pore sizes as required with the different slurry of more kinds of granular sizes, also can set the granular size of every kind of slurry according to the size of required hole, thereby form the capillary structure layer that various different aperture distribute, as two-layer three sections, four layers two sections etc.And the distribution of pores of each section of each layer is not different each other, can comprise the multistage or the multilayer of same pore size in each layer or each section yet, as long as this capillary structure layer can satisfy the need of work of heat pipe.
Claims (10)
1. heat control making method may further comprise the steps:
Make and give birth to embryo, make the some kinds of different sheets of granular size via the scraper moulding and give birth to embryo;
The winding volume is established, and living embryo winding of the sheet that above-mentioned some kinds of granular sizes are different and volume are established formation integral type tubular and given birth to embryo, and the living embryo of this tubular radially comprises the several layers that granular size is different, and each layer comprises the plurality of sections that granular size is different vertically;
Insert, tubular is given birth to embryo insert in the body of heat pipe;
Sintering carries out sintering to the body of inserting the living embryo of tubular;
Seal, in body, fill hydraulic fluid, vacuumize and seal.
2. heat control making method as claimed in claim 1 is characterized in that: be various sheets to be given birth to embryo at first be fixed as one during the winding volume is established, be rolled into tubular then.
3. heat control making method as claimed in claim 2 is characterized in that: each sheet is given birth to embryo and is at first formed along each layer of heat pipe axial distribution, is one with each layer winding then.
4. heat control making method as claimed in claim 2 is characterized in that: each sheet is given birth to embryo and is at first formed along radially-arranged each section of heat pipe, is one with each section winding then.
5. as any described heat control making method in the claim 1 to 4, it is characterized in that: it is one by hot pressing or stickup winding that each sheet is given birth to embryo.
6. heat control making method as claimed in claim 1 is characterized in that: the sheet that forms every layer during the winding volume is established is given birth in the embryo, and wherein any a slice is different with the hole that other sheet is given birth to embryo.
7. heat control making method as claimed in claim 1 is characterized in that: the sheet that forms every section during the winding volume is established is given birth in the embryo, and wherein any a slice is different with the hole that other sheet is given birth to embryo.
8. heat control making method as claimed in claim 1 is characterized in that: making is given birth to and is comprised the living embryo of the different sheet of at least three kinds of granular sizes of making in the embryo.
9. heat control making method as claimed in claim 1 is characterized in that: making is given birth in the embryo and is comprised the living embryo of making some kinds of different lengths, thereby at least one section length with other section is different in the capillary structure layer that forms behind sintering.
10. heat control making method as claimed in claim 1 is characterized in that: making is given birth in the embryo and is comprised the living embryo of making some kinds of different-thickness, thereby one deck is different with the thickness of other layer at least in the capillary structure layer that forms behind sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100337410A CN100533039C (en) | 2005-03-19 | 2005-03-19 | Manufacture method of heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100337410A CN100533039C (en) | 2005-03-19 | 2005-03-19 | Manufacture method of heat pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1834568A CN1834568A (en) | 2006-09-20 |
| CN100533039C true CN100533039C (en) | 2009-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100337410A Expired - Fee Related CN100533039C (en) | 2005-03-19 | 2005-03-19 | Manufacture method of heat pipe |
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| CN (1) | CN100533039C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003902A (en) * | 2009-08-28 | 2011-04-06 | 富瑞精密组件（昆山）有限公司 | Heat pipe manufacturing method |
| CN102735086A (en) * | 2011-04-13 | 2012-10-17 | 奇鋐科技股份有限公司 | Heat pipe manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4196504A (en) * | 1977-04-06 | 1980-04-08 | Thermacore, Inc. | Tunnel wick heat pipes |
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2005
- 2005-03-19 CN CNB2005100337410A patent/CN100533039C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4196504A (en) * | 1977-04-06 | 1980-04-08 | Thermacore, Inc. | Tunnel wick heat pipes |
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| CN1834568A (en) | 2006-09-20 |
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Granted publication date: 20090826 Termination date: 20120319 |