CN1805675A - Air-tight cavity heat radiation structure - Google Patents
Air-tight cavity heat radiation structure Download PDFInfo
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- CN1805675A CN1805675A CN 200510032871 CN200510032871A CN1805675A CN 1805675 A CN1805675 A CN 1805675A CN 200510032871 CN200510032871 CN 200510032871 CN 200510032871 A CN200510032871 A CN 200510032871A CN 1805675 A CN1805675 A CN 1805675A
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- heat radiation
- tight cavity
- metallic plate
- radiation structure
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Abstract
The invention relates to a gas tightness chamber heat radiation structure, which comprises a metallic plate and a metallic pipe. Wherein, the metallic pipe is welded on the metallic plate while the pipe has a gas tightness chamber which is filled with working liquid and capillary structure; the welded part of said metallic pipe and plate has a baffle space which can baffle the capillary function when welding to avoid the molten solder via the capillary structure along the connection part of metallic pipe and plate adsorbed into the pipe, to avoid the inward leak of solder to confirm the gas tightness.
Description
[technical field]
The present invention is relevant with the electronic applications heat radiation, particularly about a kind of air-tight cavity heat radiation structure that utilizes the phase change principle to dispel the heat.
[background technology]
Along with the develop rapidly of electronics and information industry, the speed of updates such as various electronic product such as computer is obviously accelerated, function also from strength to strength, but the heat of generation such as electronic component in it such as central processing unit simultaneously also increases synchronously.For guaranteeing the normal operation of electronic component, industry is usually by installing heat abstractor with cooling that it is dispelled the heat.
For solving the heat dissipation problem of high heat density, industry has been invented the various heat radiation solutions of utilizing the capillary principle, and as the air-tight cavity heat radiation structure that uses in the existing heat radiation field, wherein heat pipe is one of air-tight cavity that is most widely used.At present, air-tight cavity has been widely used in the electronic radiation field, it is after cavity with a given shape is evacuated, inject an amount of hydraulic fluid such as ammoniacal liquor, methyl alcohol, water or acetone etc., be sealed to form after making the porous capillary structure of being close to cavity inner wall soak into hydraulic fluid, when it contacts with thermal source, hydraulic fluid near evaporating area in the chamber promptly absorbs heat and carburation by evaporation, steam is full of whole vacuum chamber, release heat when steam is passed to condensing zone and condense into liquid, this liquid is back to evaporating area along porous capillary structure by capillarity again, and so circulation endlessly reaches condensing zone with heat by the evaporating area of air-tight cavity.
The existing manufacture method of air-tight cavity is main at present to adopt many welding to make, such as based on a metal plate, one inwall is provided with the opening-like metal circular tube of capillary structure and two ends stands on this metal plate, wherein, this capillary structure can be structures such as metal sintering powder; Then, impose the welding processing procedure this metal circular tube is bonded on this metal plate, and in pipe, inject the upper end of airtight this metal circular tube behind an amount of hydraulic fluid, have the radiator structure that seals air-tight cavity thereby make one.Yet, because the capillary structure in this metal circular tube has stronger capillary absorption affinity, and it promptly had been formed on the metal circular tube before carrying out welding sequence, when welding is carried out, the welding rod melted by heat is molten, in easily being absorbed into by the capillary structure of metal circular tube and metal base plate joint, and causes welding incomplete, the forfeiture air-tightness, so that influence the product yield.
[summary of the invention]
Technical problem to be solved by this invention is to provide a kind of blocking in the scolder to ooze, ensure that welding airtightness is to obtain the air-tight cavity heat radiation structure of better process rate.
For solving the problems of the technologies described above, air-tight cavity heat radiation structure of the present invention comprises metallic plate and metal tube, this metal tube is bonded on this metallic plate with the welding processing procedure and forms an air-tight cavity in pipe, be filled with hydraulic fluid in this cavity and be provided with capillary structure, the solder bond place of this metal tube and metallic plate is provided with one and intercepts the gap, in the scolder of fusion is absorbed into by the capillary structure in managing in the time of can preventing to weld.
Compared with prior art, air-tight cavity heat radiation structure of the present invention is when welding processing procedure, because the existence in above-mentioned gap, it has the effect of the isolated capillarity of blocking-up, the scolder that can prevent to be molten condition is had a strong absorption affinity in managing capillary structure is absorbed in the pipe along the junction of metal tube and metallic plate, reach and block the purpose of oozing in the scolder, ensure the air-tightness of welding, thereby promote process rate.
[description of drawings]
Below with reference to accompanying drawing, in conjunction with the embodiments the present invention is further described.
Fig. 1 is the vertical view of air-tight cavity heat radiation structure first embodiment of the present invention.
Fig. 2 is the cutaway view of Fig. 1 along the A-A line
Fig. 3 is the enlarged drawing of metallic plate among Fig. 2.
Fig. 4 is the partial enlarged drawing of Fig. 2.
Fig. 5 is another embodiment cutaway view of air-tight cavity heat radiation structure of the present invention.
Fig. 6 is the partial enlarged drawing of Fig. 5.
Fig. 7 is the another embodiment cutaway view of air-tight cavity heat radiation structure of the present invention.
[embodiment]
Fig. 1 to Fig. 2 is disclosed as first embodiment of air-tight cavity heat radiation structure of the present invention, this air-tight cavity heat radiation structure 10 comprises a metallic plate 20, a metal tube 30 and a capping 40, this metallic plate 20 and metal tube 30 are all made with the good metal of heat conductivility, as copper, aluminium, copper alloy etc.In the present invention's diagram, this metallic plate 20 and metal tube 30 all with circle as basic sectional combined curve feature, obviously, this both cross sectional shape is not limited to circle, other all can as geometries such as square, triangle or polygons.
Please together with reference to Fig. 3,22 are recessed to form one downwards for the corresponding accommodation space of placing in metal tube 30 bottoms among this metallic plate 20, cause among this metallic plate 20 22 and the boss 24 of its periphery between transition form one section difference, simultaneously, the contiguous boss of outer most edge 24 places at this circle middle part 22 further are recessed to form an annular recess 26 that can insert for the tube wall of metal tube 30 bottoms downwards, and the cross section of this groove 26 roughly forms the U type.In addition, inner edge adjacent recess 26 places of boss 22 are 22 formation, one ring-type oblique cutting part 28 towards the middle part, puts welding material with convenient filling out when welding.
Please join Fig. 2 to Fig. 4, when welding, metal tube 30 is embedded and is bonded in the annular recess 26 of metallic plate 20 by the exert pressure tube wall that makes its bottom of modes such as tool (figure do not show), because the bottom of this groove 26 has transition arc, cause between the bottom of the tube wall of metal tube 30 of insertion and this groove 26 and also leave certain obstruct gap 27; Then, in the cavity of metal tube 30, insert a bronze medal post (figure does not show) and insert metal dust such as copper powder etc. in the metal tube 30 and carry out sintering, on the inwall of metal tube 30, to form capillary structure 32, sintering temperature generally is controlled at 900 ℃ to 1000 ℃, and also is reserved with certain spacing between this capillary structure 32 and the capping 40.For also forming capillary structure 32 at the middle part of metallic plate 20 22 upper surfaces, can before inserting the copper post, promptly in metal tube 30, dose an amount of copper powder, so after sintering, can on the inwall of the middle part of metallic plate 20 22 upper surfaces and metal tube 30, form capillary structure 32 simultaneously; Afterwards, metal tube 30 and metallic plate 20 are imposed the welding processing procedure, also can simultaneously capping 40 be soldered in the lump the opening part of metal tube 30 upper ends, to obtain air-tight cavity heat radiation structure of the present invention, promptly in the ring-type oblique cutting part 28 of metallic plate 20 and metal tube 30 formed wedge shape spaces and stopper 42 limits of the junction of capping 40 and metal tube 30 and capping 40 enclose and insert scolder 50 respectively, impose the vacuum brazing processing procedure, this vacuum brazing can be guaranteed welding quality preferably, and the high non-oxidation phenomenon of intensity, temperature required during welding generally at 750 ℃ to 800 ℃, this welding processing procedure generally carries out after sintering process, the scolder that high temperature when preventing sintering will originally weld melts once more, when welding, because the existence in above-mentioned obstruct gap 27, it has the effect of the isolated capillarity of blocking-up, the scolder 50 that can prevent to be molten condition is had strong absorption affinity in the pipe capillary structure 32 is absorbed in the pipe along the junction of metal tube 30 with metallic plate 20, reach and block the purpose of oozing in the scolder, and simultaneously owing to also form a determining deviation between capillary structure 32 and the capping 40, also prevent interior the infiltration in the pipe of scolder at capping 40 places, thereby the whole air-tightness that ensures welding promotes process rate; At last, can be by the stopper in the capping 40 42 toward managing an amount of hydraulic fluid of interior injection (figure does not show) and vacuumizing.
In the air-tight cavity heat radiation structure of the present invention, capillary structure 32 in the metal tube 30 is except that sintering metal powder, the form that also can adopt channel form, wire netting or make up mutually, for example by in pipe, inserting wire netting, perhaps adopt and insert mode that wire netting combines or the like on metal tube 30 inwalls on the sintering metal powder and metallic plate 20.
If adopt the form of inserting wire netting to form capillary structure 32, it is more flexible that the vacuum welding processing procedure then becomes, welded after both can having inserted wire netting earlier, and also can weld earlier and afterwards insert wire netting, the problem that the scolder that the high temperature when can not cause sintering metal powder this moment will originally weld melts once more.
Fig. 5 and Fig. 6 are disclosed as another embodiment of the present invention, it is different that the difference of this air-tight cavity heat radiation structure 10a and above-mentioned first embodiment is to intercept formed position, gap, promptly on formed section poor sidewall of metallic plate 20a, form an annular recess toward sunken inside, this groove promptly forms after metal tube 30 inserts and blocks the obstruct gap 27a that oozes in the scolder, for strengthening blocking effect, on this sidewall even a plurality of obstructs gap 27a can be set.Be appreciated that ground, also can on contiguous boss 24 places of the outer most edge at metallic plate 20 middle parts 22 and 20 formed sections poor sidewalls of metallic plate, be formed with the obstruct gap simultaneously, to reach the purpose that blocks scolder.
Fig. 7 is disclosed as the present invention's another embodiment, the difference of this air-tight cavity heat radiation structure 10b and above-mentioned first embodiment is that metallic plate 20b is arranged on the top of metal tube 30b, and the metal tube 30b that is adopted is an end enclosed type, comprises in this metal tube 30b that bottom and sidewall are provided with capillary structure 32b.So when using, the bottom lock end of this metal tube 30b can with a thermal source transmission of heat by contact, and among first embodiment and second embodiment, then can contact with thermal source and conduct heat by metallic plate 20.
Claims (10)
1. air-tight cavity heat radiation structure, comprise metallic plate and metal tube, this metal tube is bonded on this metallic plate with the welding processing procedure and forms an air-tight cavity in pipe, be filled with hydraulic fluid in this cavity and be provided with capillary structure, it is characterized in that: the solder bond place of this metal tube and metallic plate is provided with one and intercepts the gap.
2. air-tight cavity heat radiation structure as claimed in claim 1 is characterized in that: this metallic plate is provided with the groove that forms above-mentioned obstruct gap.
3. air-tight cavity heat radiation structure as claimed in claim 2 is characterized in that: the middle part of this metallic plate is recessed to form a space of ccontaining metal tube bottom downwards, forms a boss around the middle part, forms one section difference between this middle part and the boss.
4. air-tight cavity heat radiation structure as claimed in claim 3, it is characterized in that: this groove further is recessed to form downwards and can be inserted wherein for the tube wall of metal tube bottom by the contiguous boss of the middle part outer rim place of metallic plate, and above-mentioned obstruct gap is formed between the bottom of the tube wall of metal tube bottom and groove.
5. air-tight cavity heat radiation structure as claimed in claim 3 is characterized in that: this groove is formed on the sidewall at this section difference place.
6. air-tight cavity heat radiation structure as claimed in claim 3 is characterized in that: this groove is formed on the middle part outer rim of metallic plate simultaneously and is close on the sidewall at boss place and this section difference place.
7. air-tight cavity heat radiation structure as claimed in claim 1 is characterized in that: the inner edge of the peripheral boss of this metallic plate forms a ring-type oblique cutting part towards the middle part of metallic plate.
8. air-tight cavity heat radiation structure as claimed in claim 1 is characterized in that: this metal tube one end is provided with opening, and this opening is provided with a capping of seal chamber, and leaves a determining deviation between the capillary structure in this capping and the pipe.
9. air-tight cavity heat radiation structure as claimed in claim 1 is characterized in that: this metal tube one end seals and contacts with a thermal source.
10. air-tight cavity heat radiation structure as claimed in claim 1 is characterized in that: this capillary structure is the combination of sintering metal powder or wire netting or sintering metal powder and wire netting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100328712A CN100384313C (en) | 2005-01-15 | 2005-01-15 | Air-tight cavity heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100328712A CN100384313C (en) | 2005-01-15 | 2005-01-15 | Air-tight cavity heat radiation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1805675A true CN1805675A (en) | 2006-07-19 |
| CN100384313C CN100384313C (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100328712A Expired - Fee Related CN100384313C (en) | 2005-01-15 | 2005-01-15 | Air-tight cavity heat radiation structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990050A (en) * | 2015-07-27 | 2015-10-21 | 杨维举 | Superconductive cooling plate, manufacturing process thereof and LED lamp with superconductive cooling function |
| TWI588439B (en) * | 2015-05-25 | 2017-06-21 | 訊凱國際股份有限公司 | 3d heat conducting structures and manufacturing method thereof |
| CN110021570A (en) * | 2019-04-10 | 2019-07-16 | 嘉龙(平潭)科技有限公司 | The three-dimensional long-range radiating module of phase change |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2329925Y (en) * | 1998-08-14 | 1999-07-21 | 侯增祺 | Plane-type heat pipe radiator |
| CN2596415Y (en) * | 2002-12-30 | 2003-12-31 | 新渠热传导技术应用开发(大连)有限公司 | Heat pipe type microprocessor radiator |
| TWM247810U (en) * | 2003-12-05 | 2004-10-21 | Tai Sol Electronics Co Ltd | Liquid/gas phase heat dissipation apparatus with seal structure |
-
2005
- 2005-01-15 CN CNB2005100328712A patent/CN100384313C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI588439B (en) * | 2015-05-25 | 2017-06-21 | 訊凱國際股份有限公司 | 3d heat conducting structures and manufacturing method thereof |
| CN104990050A (en) * | 2015-07-27 | 2015-10-21 | 杨维举 | Superconductive cooling plate, manufacturing process thereof and LED lamp with superconductive cooling function |
| CN110021570A (en) * | 2019-04-10 | 2019-07-16 | 嘉龙(平潭)科技有限公司 | The three-dimensional long-range radiating module of phase change |
| CN110021570B (en) * | 2019-04-10 | 2022-06-14 | 嘉龙(平潭)科技有限公司 | Three-dimensional phase change remote heat dissipation module |
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| Publication number | Publication date |
|---|---|
| CN100384313C (en) | 2008-04-23 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Furui Precision Components (Kunshan) Co., Ltd. Assignor: Fuhuai (Shenzheng) Precision Industry Co., Ltd.|Foxconn Precision Industry Co., Ltd. Contract fulfillment period: 2008.5.23 to 2025.1.15 contract change Contract record no.: 2009990000043 Denomination of invention: Air-tightness chamber heat radiation structure and its producing method Granted publication date: 20080423 License type: Exclusive license Record date: 2009.1.19 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.5.23 TO 2025.1.15; CHANGE OF CONTRACT Name of requester: FU RUI PRECISION COMPONENT (KUNSHAN) CO., LTD. Effective date: 20090119 |
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| ASS | Succession or assignment of patent right |
Owner name: FU RUI PRECISION COMPONENT (KUNSHAN) CO., LTD. Free format text: FORMER OWNER: QUASI-FU PRECISION INDUSTRY ( SHENZHEN ) CO., LTD. Effective date: 20090612 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090612 Address after: 635, Foxconn Road, hi tech Industrial Development Zone, Kunshan Development Zone, Kunshan, Jiangsu. Zip code: 215316 Co-patentee after: Foxconn Precision Industry Co., Ltd. Patentee after: Fu Rui (Kunshan) Co., Ltd. precision components Address before: 7, 8, 98 industrial town, Wanfeng village, Baoan District, Sha town, Shenzhen, Guangdong Province: zip code: 518104 Co-patentee before: Foxconn Precision Industry Co., Ltd. Patentee before: Rich quasi Precision Industry (Shenzhen) Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20140115 |