CN100362307C - Method for manufacturing small heat pipe - Google Patents
Method for manufacturing small heat pipe Download PDFInfo
- Publication number
- CN100362307C CN100362307C CNB2005100607246A CN200510060724A CN100362307C CN 100362307 C CN100362307 C CN 100362307C CN B2005100607246 A CNB2005100607246 A CN B2005100607246A CN 200510060724 A CN200510060724 A CN 200510060724A CN 100362307 C CN100362307 C CN 100362307C
- Authority
- CN
- China
- Prior art keywords
- pipe
- mandrel
- gas removing
- removing pipe
- small heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012546 transfer Methods 0.000 claims abstract description 20
- 238000007872 degassing Methods 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000005245 sintering Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000007596 consolidation process Methods 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 abstract description 12
- 238000009833 condensation Methods 0.000 abstract description 7
- 230000005494 condensation Effects 0.000 abstract description 7
- 230000008020 evaporation Effects 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 8
- 230000005855 radiation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention relates to a method for manufacturing a small heat pipe, which comprises the following steps: one end of the tube body is extruded into a degassing tube; inserting a mandrel into the center of the tube body, and inserting the conical part of the mandrel into the degassing tube; filling metal powder into a gap between the inner wall surface of the pipe body and the mandrel; sintering the pipe body filled with the metal powder and the mandrel at high temperature to form a sintered layer, and taking out the mandrel after cooling; forming a sealed tail end at the other end of the tube body; injecting liquid heat transfer medium into the sealed cavity; pumping out air in the sealed cavity; the air removing pipe is clamped and sealed, and the end part of the air removing pipe is sealed and welded to form a degassing end. The small heat pipe comprises a tail end, a pipe body, a sintered layer and a degassing end, wherein a sealed cavity is formed by the tail end, the pipe body and the degassing end, the sintered layer is arranged on the inner wall surface of the pipe body, and working liquid is adsorbed in the sintered layer. The invention has the advantages that: the heat conduction speed is high, the heat transfer capacity is high, and the surface temperature of the pipe body is uniform; the sintered layer on the inner wall surface of the tube body provides a good and smooth circulation channel for the working liquid, and the stability of the evaporation and condensation phase change process is improved.
Description
Technical field
The present invention relates to a kind of heat pipe and manufacture method thereof, especially a kind of manufacture method that is used for the small heat pipe of heat-generating electronic elements (comprising PC CPU) heat radiation.
Background technology
Along with surprising speed development and the miniaturization of electronic products such as computer, communication, photoelectric lighting LED with " Moore's Law (Moor ' s Law) " geometric progression, the heat dissipation problem of deriving relatively also becomes to increasing.How to solve this heat dissipation problem in limited space, guarantee the normal running of electronic product, be that countries in the world heat radiation module producer and related scientific research mechanism strengthen the scientific research input, actively seek and research and develop new and effective, as to be fit to electronic product development need of future generation radiating subassembly.
Heat pipe is a kind of small amount of liquid working medium of injecting in the cavity of sealing, utilizes evaporation of liquid and condensation to come quick conductive, is the existing the fastest heat transfer element of heat conduction.With the heat radiation module that heat pipe is made as high-performance heat transfer components, begun to enter heat-generating electronic elements (comprising computer CPU) heat radiation module market, and progressively substituted existing entity heat radiation module.
Along with the extensive use of small heat pipe on electronic radiation, to the unfailing performance and the higher requirement of manufacturing cost proposition of small heat pipe.Utilize at present and wear net, groove hair and inhale the small heat pipe that core makes and to have satisfied the requirement of electronic product, and sintering core small heat pipe is made and had low, the defect of high cost of yield rate, has influenced applying of sintering small heat pipe heat dissipation element.
Summary of the invention
In order to overcome the deficiency that existing small heat pipe is made, the invention provides a kind of manufacture method of small heat pipe,, simplify production technology to improve the yield rate of small heat pipe, reduce production costs, satisfy the demand of market stay in grade, function admirable, cheap small heat pipe.
The present invention solves the technical scheme that its technical problem adopts: this small heat pipe, comprise tail end, body, sinter layer, degasification end, and constitute seal chamber by tail end, body, degasification end, inside is vacuum state; The tail end of body is that machinery revolves the spot welding sealing of contracing, and the degasification end of body hits the gas removing pipe that is squeezed into little caliber with machinery, and the spot welding of gas removing pipe pinch off is sealing state; The inboard wall of tube body face is provided with sinter layer, is adsorbed with hydraulic fluid in sinter layer.
The method for making of this small heat pipe comprises the following steps: that mainly an end of body hits the gas removing pipe that is squeezed into little caliber with mechanical means; Insert mandrel at the body center, insert in the gas removing pipe in the tapering of mandrel, and seal the gap of body and gas removing pipe; The metal powder of packing in the gap of inboard wall of tube body face and mandrel, and shaking on shake table makes in the gap the even consolidation of metal powder everywhere; Put into the atmosphere protection stove and carry out high temperature sintering installing the body of metal powder and mandrel, be formed on the sinter layer on the inner surface of tube body, mandrel is taken out in the cooling back; Revolve with machinery at the other end of body and to shorten seal face and spot welding sealing into, form the tail end of sealing, constitute the seal chamber except that gas removing pipe is in communication with the outside; In seal chamber, inject liquid heat transfer working medium by gas removing pipe; On the vacuum exhaust platform, extract the air of seal chamber inside out by gas removing pipe; With mechanical means clamp gas removing pipe, use the end of welding method soldering and sealing gas removing pipe again, form the degasification end, finish the manufacturing of small heat pipe.
The present invention can be further perfect by following manner:
Sinter layer be pure copper powder through high temperature sintering on the inboard wall of tube body face, the circulation canal of hydraulic fluid is provided.
The effect that the present invention is useful is: small heat pipe is inner by hydraulic fluid evaporation and condensation phase-change heat transfer, and heat conduction speed is fast, heat-transfer capability big, the body surface temperature is even.Sinter layer on the small heat pipe internal face has increased heat transfer area, has strengthened the condensation heat transfer of evaporation of liquid heat transfer and steam; Sinter layer on the inboard wall of tube body face provides the good unobstructed circulation canal of hydraulic fluid, has increased the stability of evaporative condenser phase transition process.Small heat pipe manufacture method of the present invention can improve the yield rate of small heat pipe, simplifies production technology, reduces production costs, and satisfies the demand of market to stay in grade, function admirable, cheap small heat pipe.
Description of drawings
Fig. 1 is a body raw material schematic diagram of the present invention;
Fig. 2 is the schematic diagram that body one end of the present invention is processed into gas removing pipe;
Fig. 3 is the present invention's schematic diagram when adorning the copper powder sintering;
Fig. 4 is body behind the sintering of the present invention, gas removing pipe, sinter layer structural representation;
Fig. 5 becomes the tail end structural representation under the body other end of the present invention adds;
Fig. 6 is the structural representation of body tail point postwelding of the present invention;
Fig. 7 is the sectional structure schematic diagram of small heat pipe of the present invention;
Fig. 8 is the perspective view of small heat pipe of the present invention.
Description of reference numerals: body 1, tail end 2 revolves the end 2-1 that contracts, and revolves a 2-2 that contracts, pad 2-3, degasification end 3, gas removing pipe 3-1 adds and seals 3-2, welding ends 3-3, sinter layer 4, metal powder 4-1, mandrel 5, seal chamber 6.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
With reference to Fig. 7, Fig. 8, this small heat pipe comprises tail end 2, body 1, sinter layer 4, degasification end 3, and this small heat pipe constitutes seal chamber 6 by tail end 2, body 1, degasification end 3, and inside is vacuum state; Contract for machinery the revolves spot welding sealing of the tail end 2 of body 1, the degasification end 3 usefulness machinery of body 1 hits the gas removing pipe 3-1 that is squeezed into little caliber, in seal chamber 6, inject hydraulic fluid by gas removing pipe 3-1, after by gas removing pipe 3-1 the air in the seal chamber 6 being extracted out, again the welding of gas removing pipe 3-1 pinch off is sealing state; Sintering has certain thickness porous capillary structure sinter layer 4 on body 1 internal face, and sinter layer 4 is counted the pure copper powder high temperature sintering by certain order and formed, the passage that circulates between small heat pipe evaporating area and condensing zone as hydraulic fluid; In sinter layer 4, be adsorbed with hydraulic fluid.
Referring to Fig. 1～Fig. 8, the manufacture method of this small heat pipe may further comprise the steps: an end of body 1 hits the gas removing pipe 3-1 (referring to Fig. 2) that is squeezed into little caliber with mechanical means; Insert mandrel 5 in body 1 inside center, an end of mandrel 5 is done tapered, inserts among the gas removing pipe 3-1, and the gap of sealing body 1 and gas removing pipe 3-1, simultaneously mandrel 5 is positioned at the central part of body 1; The metal powder 4-1 that packs in the gap of body 1 internal face and mandrel 5, and shaking on shake table makes in the gap the even consolidation of metal powder everywhere, and this metal powder is the pure copper powder (referring to Fig. 3) of certain particle size scope (order number); Be placed on special tool and shelve to send into and carry out high temperature sintering in the atmosphere protection stove installing the body 1 of metal powder 4-1 and mandrel 5, be formed on the sinter layer 4 on body 1 inner surface, mandrel 5 (referring to Fig. 4) is taken out in the cooling back; Revolve with machinery at the other end of body 1 and to shorten contract end 2-1 and revolve a 2-2 that contracts of revolving of circular seal end face into, it is pad 2-3 that a 2-2 that contracts is revolved in spot welding, forms the tail end 2 of sealing, constitutes seal chamber 6 except that gas removing pipe 3-1 is in communication with the outside (referring to Fig. 5, Fig. 6); In cavity 6, inject liquid heat transfer working medium by gas removing pipe 3-1, then after extracting annular seal space out by gas removing pipe 3-1 on the vacuum exhaust platform and stopping the air of 6 inside, with mechanical means clamp gas removing pipe 3-1, formation adds seals 3-2, add the end of sealing 3-2 with welding method soldering and sealing again, form welding ends 3-3, constituted degasification end 3, finish the manufacturing of small heat pipe and (see Fig. 7, Fig. 8).
During use, an end of small heat pipe contacts heat absorption as being heated evaporating area with heat-generating electronic elements, the other end of small heat pipe is as the heat release condensing zone, combine with heat sink assembly, with cold air heat is dispersed in the surrounding environment, reach the purpose of cooling heat-generating electronic elements by fan.After the evaporating area of being heated of small heat pipe absorbs the heat of heat-generating electronic elements, the liquid heat transfer working medium of absorption absorbs heat of vaporization in the inner sinter layer of the evaporating area of being heated of small heat pipe, become steam flow heat release condensing zone, the condensation of sinter layer steam is emitted heat and is become liquid heat transfer working medium in the heat release condensing zone, sinter layer utilizes the hair suction of its microcellular structure that liquid heat transfer working medium is sent back to the evaporating area of being heated, to replenish the hydraulic fluid that the evaporating area of being heated reduces because of evaporation, thereby guarantee that working media continuously evaporates and condensation cycle, the heat that heat-generating electronic elements is produced is passed to the heat release condensing zone fast continuously, heat sink assembly is given in conduction again, is dispersed in the surrounding environment then.Because small heat pipe utilizes the principle of evaporative condenser phase-change heat transfer to realize heat conduction, so rate of heat transfer is very fast, heat-transfer capability is big, volume is little, and small heat pipe is the hollow sealing cavity body structure, and is in light weight, the inner sinter layer structure that adopts of small heat pipe has been strengthened evaporation and condensation phase-change heat transfer.By the heat radiation module that this high-performance heat transfer components of small heat pipe is formed, can satisfy that heat-generating electronic elements is big to radiator heat-dissipation power, volume is little, the requirement of in light weight, stable performance.
Claims (2)
1. the manufacture method of a small heat pipe is characterized in that: mainly comprise the following steps:
1), an end of body (1) hits the gas removing pipe (3-1) that is squeezed into little caliber with mechanical means;
2), mandrel (5) is inserted at the center in body (1), insert in the gas removing pipe (3-1) in mandrel (5) tapering, and seal the gap of body (1) and gas removing pipe (3-1);
3), the metal powder (4-1) of in the gap of body (1) internal face and mandrel (5), packing into, and on shake table, shake, make in the gap the even consolidation of metal powder everywhere;
4), will install the body (1) of metal powder (4-1) and mandrel (5) and put into the atmosphere protection stove and carry out high temperature sintering, be formed on the sinter layer (4) on body (1) inner surface, mandrel (5) is taken out in the cooling back;
5), revolve with machinery at the other end of body (1) and to shorten seal face and spot welding sealing into, form the tail end (2) of sealing, constitute the seal chamber (6) except that gas removing pipe (3-1) is in communication with the outside;
6), in seal chamber (6), inject liquid heat transfer working medium by gas removing pipe (3-1);
7), on the vacuum exhaust platform, extract the inner air of seal chamber (6) out by gas removing pipe (3-1);
8), with mechanical means clamp gas removing pipe (3-1), use the end of welding method soldering and sealing gas removing pipe (3-1) again, form degasification end (3), finish the manufacturing of small heat pipe.
2. the manufacture method of small heat pipe according to claim 1, it is characterized in that: described metal powder (4-1) is a pure copper powder, through high temperature sintering on body (1) internal face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100607246A CN100362307C (en) | 2005-09-08 | 2005-09-08 | Method for manufacturing small heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100607246A CN100362307C (en) | 2005-09-08 | 2005-09-08 | Method for manufacturing small heat pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1737485A CN1737485A (en) | 2006-02-22 |
| CN100362307C true CN100362307C (en) | 2008-01-16 |
Family
ID=36080368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100607246A Expired - Fee Related CN100362307C (en) | 2005-09-08 | 2005-09-08 | Method for manufacturing small heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100362307C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915468B (en) * | 2010-07-29 | 2012-10-17 | 皇明太阳能股份有限公司 | Production method of tubular heat tube for solar energy |
| CN104215104B (en) * | 2013-06-04 | 2016-04-13 | 国研高能（北京）稳态传热传质技术研究院有限公司 | The preparation method of multi-cavity heat pipe |
| CN103317316A (en) * | 2013-06-06 | 2013-09-25 | 特能传热科技（中山）有限公司 | Heat pipe production process |
| CN103419005B (en) * | 2013-07-17 | 2015-08-12 | 特能传热科技（中山）有限公司 | A kind of small heat pipe manufacture craft |
| CN103344141A (en) * | 2013-07-30 | 2013-10-09 | 黄斌 | Heat pipe heating device, heat pipe heat dissipation method and superconduction liquid |
| CN104759627B (en) * | 2014-01-03 | 2017-08-29 | 江苏格业新材料科技有限公司 | A kind of method that micro heat pipe is manufactured by reduction-oxidation copper powder |
| CN103822513A (en) * | 2014-01-10 | 2014-05-28 | 广州大学 | Antigravity heat pipe and manufacturing method thereof |
| CN104930888A (en) * | 2014-03-18 | 2015-09-23 | 江苏格业新材料科技有限公司 | Method for manufacturing miniature heat pipe by employing ultrathin foamed silver as wick |
| CN105698575A (en) * | 2014-11-29 | 2016-06-22 | 黄斌 | Heat efficiency medium conductor |
| CN105115332A (en) * | 2015-08-27 | 2015-12-02 | 朱惠冲 | Planar super-conduction heat pipe and preparation method thereof |
| CN107655356A (en) * | 2016-07-25 | 2018-02-02 | 昆山巨仲电子有限公司 | Heat pipe and its mouth-sealing method |
| JP6767303B2 (en) * | 2017-04-21 | 2020-10-14 | 新光電気工業株式会社 | Heat pipe and its manufacturing method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1518647A1 (en) * | 1987-07-14 | 1989-10-30 | Белорусское республиканское научно-производственное объединение порошковой металлургии | Method of manufacturing heat pipe wick |
| CN1280290A (en) * | 1999-07-08 | 2001-01-17 | 超众科技股份有限公司 | Sealing method for forming heat pipe |
| CN2454063Y (en) * | 2000-11-28 | 2001-10-17 | 超众科技股份有限公司 | Heat-pipe forming machine |
| JP2003343987A (en) * | 2002-05-24 | 2003-12-03 | Mitsubishi Electric Corp | Manufacturing method for wick structural body |
| CN2640042Y (en) * | 2003-06-10 | 2004-09-08 | 业强科技股份有限公司 | Appliance for manufacturing heat-cnoducting pipe |
| CN1548914A (en) * | 2003-05-23 | 2004-11-24 | 诺亚公司 | Flat closed heat pipe and its producing method |
| CN2664052Y (en) * | 2003-12-05 | 2004-12-15 | 新渠热传导技术应用开发(大连)有限公司 | Miniature heat pipe with sintered layer on internal wall |
| CN1565797A (en) * | 2003-06-10 | 2005-01-19 | 业强科技股份有限公司 | Manufacturing method of heat pipe batch |
| CN1657858A (en) * | 2004-02-20 | 2005-08-24 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe and its preparation method |
-
2005
- 2005-09-08 CN CNB2005100607246A patent/CN100362307C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1518647A1 (en) * | 1987-07-14 | 1989-10-30 | Белорусское республиканское научно-производственное объединение порошковой металлургии | Method of manufacturing heat pipe wick |
| CN1280290A (en) * | 1999-07-08 | 2001-01-17 | 超众科技股份有限公司 | Sealing method for forming heat pipe |
| CN2454063Y (en) * | 2000-11-28 | 2001-10-17 | 超众科技股份有限公司 | Heat-pipe forming machine |
| JP2003343987A (en) * | 2002-05-24 | 2003-12-03 | Mitsubishi Electric Corp | Manufacturing method for wick structural body |
| CN1548914A (en) * | 2003-05-23 | 2004-11-24 | 诺亚公司 | Flat closed heat pipe and its producing method |
| CN2640042Y (en) * | 2003-06-10 | 2004-09-08 | 业强科技股份有限公司 | Appliance for manufacturing heat-cnoducting pipe |
| CN1565797A (en) * | 2003-06-10 | 2005-01-19 | 业强科技股份有限公司 | Manufacturing method of heat pipe batch |
| CN2664052Y (en) * | 2003-12-05 | 2004-12-15 | 新渠热传导技术应用开发(大连)有限公司 | Miniature heat pipe with sintered layer on internal wall |
| CN1657858A (en) * | 2004-02-20 | 2005-08-24 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe and its preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1737485A (en) | 2006-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100362307C (en) | Method for manufacturing small heat pipe | |
| CN100535574C (en) | Method for manufacturing cylindrical heat pipe | |
| CN101839660B (en) | Flat heat tube with hole-groove combined mandrel and manufacturing method thereof | |
| TWI329184B (en) | Vapor chamber and manufacturing method thereof | |
| JP2003222481A (en) | Heat pipe and method of manufacturing the same | |
| WO2019061005A1 (en) | Great-power flat evaporator resisting against positive pressure, processing method therefor, and flat-plate loop heat pipe based on evaporator | |
| CN103000595B (en) | A kind of multidirectional turnover phase change heat-transfer device and preparation method thereof | |
| CN201138911Y (en) | Heat radiating device realizing heat transferring of high heat flow density | |
| CN1928484A (en) | Heat pipe and method for manufacturing same | |
| CN1849049A (en) | Flat column shape thermal tube | |
| CN103047630A (en) | Superconductive nanofluid radiator and working method thereof | |
| CN1873360A (en) | Ring type heat exchanging system | |
| CN1808044A (en) | Sintering type heat pipe and manufacturing method thereof | |
| CN104613440B (en) | A kind of heat abstractor of remote LED light fixture | |
| CN103925576A (en) | LED heat radiator based on heat pipe technology | |
| CN103940269A (en) | Heat tube based on carbon nano tube wick and manufacturing method of heat tube | |
| CN2829090Y (en) | Slotted cylindrical heat pipe | |
| CN1291213C (en) | Heat pipe | |
| CN104613439B (en) | A kind of heat abstractor of LED lamp | |
| CN103822513A (en) | Antigravity heat pipe and manufacturing method thereof | |
| CN100360888C (en) | Cylindrical heat pipe | |
| CN104613801A (en) | Evaporator and heat dissipation device for loop heat pipe | |
| CN201479531U (en) | U-shaped tubular phase-change electronic radiator | |
| CN204555768U (en) | Temperature-uniforming plate | |
| CN203758332U (en) | Antigravity heat pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080116 Termination date: 20100908 |