CN1766513A - Flat type heat pipe and its support structure - Google Patents
Flat type heat pipe and its support structure Download PDFInfo
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- CN1766513A CN1766513A CN 200410089845 CN200410089845A CN1766513A CN 1766513 A CN1766513 A CN 1766513A CN 200410089845 CN200410089845 CN 200410089845 CN 200410089845 A CN200410089845 A CN 200410089845A CN 1766513 A CN1766513 A CN 1766513A
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- supporting construction
- heat pipe
- porous layer
- capillary structure
- metal
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Abstract
The invention discloses a flat-type heat pipe and support structure, which is characterized by the following: the support structure touches the capillary tissue on the inner wall in the heat pipe, which prevents the capillary tissue from stripping; the support structure is a multiple-layer or single-layer structure, which contains a porous layer within several stream channels; each stream channel connects each other through three-dimensional spacing allocation; the porous layer provides a capillary force, which makes the working fluid in the heat pipe return; the material quality of support structure contains metal with factor of porosity ranged from 70 to 95 percent and aperture ranged from 30 to 100 ppi. The invention reduces the thermal resistance between capillary tissue and inner wall of heat pipe and provides the steam flowing space, which improves the radiation efficiency of heat pipe.
Description
Technical field
The relevant a kind of flat plate heat tube of the present invention, particularly relevant a kind of heat pipe of avoiding capillary structure to peel off.
Background technology
Heat pipe (heat pipe) is a kind of simply but extremely effective heat abstractor, has been widely used on the various electronic radiation products.Its operation principle is that the latent heat by workflow body fluid, gas two alternate phase change transmits energy.At evaporator section (vaporization section), working fluid borrows evaporation latent heat to take away a large amount of heat energy from thermal source, its steam is full of the interior space of the former pipe that has vacuumized and condenses into liquid and discharge heat energy at condensation segment (condensation section), and the capillary force that inner capillary structure of hydraulic fluid provides flows back into the circulation that evaporator section carries out phase change, continues and heat energy is transferred at a distance from thermal source shed effectively.
Flat plate heat tube belongs to a kind of of heat pipe, its operation principle is identical with the traditional type heat pipe, cause has than the more large-area conducting surface of traditional type heat pipe, and meets the high practical value of " light, thin, short, little ", so be used in a large number on the electronic product of large-scale radiating surface.The existing various ways of flat plate heat tube is suggested, but is mostly to utilize two dull and stereotyped formation one confined spaces up and down, and is formed with capillary structure on the inwall of two flat boards.When using porous powder (sintered powder), for example be copper powder etc., be one by it with two flat sintered up and down, with the formation capillary structure on the inwall of two flat boards.Yet, because the employed temperature of sintering is quite high, easily cause dull and stereotyped softening, thus dull and stereotyped thickness must be increased, so as to strengthening its intensity.Yet this practice not only increases material cost, more makes the weight of product integral body increase, real non-one good solution.
If use porous metal net (mesh), or porous powder independence sintering, during so as to the formation capillary structure, must between the capillary structure that is attached on the two dull and stereotyped inwalls, use a plurality of supporters, to avoid capillary structure to subside, cause the heat conduction efficiency variation, and guarantee that capillary structure can well be attached on the dull and stereotyped inwall.Please refer to Figure 1A, it is the schematic diagram of existing a kind of flat plate heat tube.Figure 1A has been disclosed in United States Patent (USP) the 6th, 293, in No. 333 inventions, utilizes the metal screen cloth to insert in the flat metallic conduit 12 through the fluid channel capillary structure 11 of extrusion molding.Two-layer up and down capillary structure uses support column (stiffener) 13 to support and is closely connected with duct wall.
Please refer to Figure 1B, it is the schematic diagram of existing another kind of flat plate heat tube.In Figure 1B, the main flat plate heat tube that is constituted by upper flat plate 10a and following dull and stereotyped 10b, its capillary structure 11 is to form with porous powder independence sintering.Between two capillary structures 11, be provided with the formed support columns 14 of porous powder a plurality of and formation capillary structure 11 identical materials with suitable spacing, subside in order to avoid capillary structure 11, and form a steam channel between the two adjacent support columns 14.
Yet along with the flat plate heat tube size is done bigger and bigger, the number of supporter or sectional area need increase so that enough support forces to be provided thereupon, avoid capillary structure to subside in the place that does not have supporter supports.In case the number of supporter or sectional area increase, and not only make the overall weight of heat pipe increase thereupon, also make that reduce in the mobile space of steam originally, and intercept original steam channel, cause heat pipe heat radiation efficient to be affected.
Summary of the invention
Therefore, for addressing the above problem, the present invention proposes a kind of heat pipe and supporting construction thereof, have porous layer and a plurality of steam channel, not only can fully support capillary structure, reduce the thermal resistance of capillary structure and heat pipe inwall, and the flow of vapor space is provided, the working fluid that also can provide capillary force to make heat pipe refluxes, and increases heat pipe heat radiation efficient.
A kind of supporting construction that is applied to heat pipe according to an aspect of the present invention, the capillary structure of contact heat pipe inwall is peeled off in order to avoid capillary structure.Supporting construction is the structure of a multilayer or individual layer, comprises a porous layer, has a plurality of steam channels in the porous layer, and steam channel is with three dimensions configuration and is interconnected.The working fluid that porous layer also provides a capillary force to make heat pipe refluxes.The material of supporting construction comprises a metal, for example is a foaming metal material, and its porosity is about 70% to 95%, and the about 30ppi to 100ppi of pore size.
A kind of heat pipe according to a further aspect of the invention comprises an obturator, capillary structure and supporting construction.Have a space in the obturator, and capillary structure is attached at the obturator inwall.The capillary structure of supporting construction contact heat pipe inwall is peeled off in order to avoid capillary structure.Supporting construction is the structure of a multilayer or individual layer, comprises a porous layer, has a plurality of steam channels in the porous layer, and steam channel is with three dimensions configuration and is interconnected.The working fluid that porous layer also provides a capillary force to make heat pipe refluxes.The material of supporting construction comprises a metal, for example is a foaming metal material, and its porosity is about 70% to 95%, and the about 30 hole/inches (ppi) of pore size are to 100 hole/inches (ppi).Supporting construction can be utilized and inject an inert gas in a molten metal, and formation perhaps, can utilize sputter or be coated with a metal on a porous spongy tissue through cooling off after, forms after removing the porous spongy tissue again.
For above and other objects of the present invention, characteristics and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. is elaborated as follows:
Description of drawings
Figure 1A is the schematic diagram of existing a kind of flat plate heat tube.
Figure 1B is the schematic diagram of existing another kind of flat plate heat tube.
Fig. 2 is the schematic diagram according to the flat plate heat tube of preferred embodiment of the present invention.
The specific embodiment
Please refer to Fig. 2, it is the schematic diagram according to the flat plate heat tube of preferred embodiment of the present invention.The flat plate heat tube 20 that preferred embodiment of the present invention disclosed has one by up and down two dull and stereotyped 20a and the formed obturator of 20b, and comprises capillary structure 21 and supporting construction 24.Have a space in the obturator, capillary structure 21 is attached at the obturator inwall, that is is attached at two dull and stereotyped 20a and 20b.
The generation type of capillary structure 21 does not limit, and for example can use porous powder (sinteredpowder), and as copper powder etc., independent sintering forms, or uses porous metal net (mesh) etc.
Supporting construction 24 comprises a porous layer, has a plurality of steam channels in the porous layer, and steam channel is with three dimensions configuration and is interconnected.The working fluid that porous layer also provides a capillary force to make heat pipe refluxes.
Supporting construction 24 can be the structure of a multilayer or individual layer, and utilizes supporting construction 24 to contact the capillary structure 21 of heat pipe inwall up and down, can avoid capillary structure 21 to peel off.In addition, supporting construction 24 can provide a pressure in capillary structure 21, makes capillary structure 21 adhere well to the heat pipe inwall, can further reduce the thermal resistance of capillary structure 21 and heat pipe inwall.
The material of supporting construction 24 comprises a metal, for example is a foaming metal material, and its porosity is about 70% to 95%, and the about 30pp of pore size i to 100ppi, preferably for example is 50ppi.As for the production method of foaming metal, can utilize and inject an inert gas in a molten metal, after cooling off, form.Perhaps, can utilize sputter or be coated with a metal on a porous spongy tissue, form after removing the porous spongy tissue again.
Because supporting construction 24 is the structure of macroporosity, compared to the structure of the existing use support column that identical support force can be provided, uses the heat pipe of supporting construction 24 of the present invention, its Unit Weight is lighter on the contrary.And it is quite convenient that supporting construction 24 is applied to support on the capillary structure 21, as long as insert between two flat boards, makes supporting construction 24 contact capillary structure 21 up and down and get final product, and not only can reduce the complicated formality on the processing procedure, also can increase the reliability on the product.In addition, supporting construction is not limited in the structure into simple layer, also can be sandwich construction.
Again, because supporting construction 24 porous layers own promptly have considerable hole, the working fluid that is evaporated to gaseous state can utilize these holes as its steam channel, flows freely in three dimensions.
In sum, disclosed flat plate heat tube and supporting construction thereof, have porous layer and a plurality of steam channel, not only can fully support capillary structure 21, guarantee the integrality that capillary structure 21 and heat pipe inwall fit, improve and make acceptance rate, and reduce the thermal resistance of capillary structure 21 and heat pipe inwall.Other provides the flow of vapor space, and the working fluid that also can provide capillary force to make heat pipe refluxes, to increase heat pipe heat radiation efficient.
Though the present invention discloses as above with a preferred embodiment; yet it is not in order to limit the present invention; any person skilled in the art person without departing from the spirit and scope of the present invention; when the change that can do various equivalences or replacement, so protection scope of the present invention is when being as the criterion that the claim scope of looking accompanying the application is defined.
Claims (21)
1. a supporting construction that is applied to heat pipe comprises a porous layer, and wherein this supporting construction contacts the capillary structure of this heat pipe inwall, peels off in order to avoid this capillary structure.
2. supporting construction as claimed in claim 1 is characterized in that this porous layer has a plurality of steam channels, is with three dimensions configuration.
3. supporting construction as claimed in claim 1 is characterized in that this porous layer has a plurality of steam channels, and those steam channels are interconnected.
4. supporting construction as claimed in claim 1 is characterized in that the working fluid that this porous layer also provides a capillary force to make this heat pipe refluxes.
5. supporting construction as claimed in claim 1 it is characterized in that the material of this supporting construction comprises a metal, and this supporting construction is the structure for a multilayer or individual layer.
6. supporting construction as claimed in claim 1 is characterized in that this supporting construction is a foaming metal material.
7. supporting construction as claimed in claim 6, it is characterized in that this supporting construction is to utilize to inject an inert gas in a molten metal, after cooling off, form, perhaps, this supporting construction is to utilize sputter or be coated with a metal on a porous spongy tissue, forms after removing this porous spongy tissue again.
8. supporting construction as claimed in claim 1 is characterized in that the porosity of this porous layer is about 70% to 95%.
9. supporting construction as claimed in claim 1, the about 30 hole/inches of pore size that it is characterized in that this porous layer are to 100 hole/inches.
10. supporting construction as claimed in claim 1 is characterized in that this capillary structure comprises metal knitted net, groove, sintered powder or fibre bundle.
11. a heat pipe comprises:
One obturator has a space in it;
One capillary structure is attached at this obturator inwall; And
One supporting construction comprises a porous layer;
Wherein, this supporting construction contacts this capillary structure, peels off in order to avoid this capillary structure.
12. heat pipe as claimed in claim 11 it is characterized in that this obturator includes two flat boards, and this capillary structure is attached at two dull and stereotyped inwalls.
13. heat pipe as claimed in claim 11 is characterized in that this porous layer has a plurality of steam channels, is with three dimensions configuration.
14. heat pipe as claimed in claim 11 is characterized in that this porous layer has a plurality of steam channels, those steam channels are interconnected.
15. heat pipe as claimed in claim 11 is characterized in that the working fluid that this porous layer also provides a capillary force to make this heat pipe refluxes.
16. heat pipe as claimed in claim 11 it is characterized in that the material of this supporting construction comprises a metal, and this supporting construction is the structure of a multilayer or individual layer.
17. heat pipe as claimed in claim 11 is characterized in that this supporting construction is a foaming metal material.
18. heat pipe as claimed in claim 17, it is characterized in that this supporting construction is to utilize to inject an inert gas in a molten metal, after cooling off, form, perhaps, this supporting construction is to utilize sputter or be coated with a metal on a porous spongy tissue, forms after removing this porous spongy tissue again.
19. heat pipe as claimed in claim 11 is characterized in that the porosity of this porous layer is about 70% to 95%.
20. heat pipe as claimed in claim 11 is characterized in that the about 30-100 of the pore size hole/inch of this porous layer.
21. heat pipe as claimed in claim 11 is characterized in that this capillary structure comprises metal knitted net, groove, sintered powder or fibre bundle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100898459A CN100356129C (en) | 2004-10-26 | 2004-10-26 | Flat type heat pipe and its support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100898459A CN100356129C (en) | 2004-10-26 | 2004-10-26 | Flat type heat pipe and its support structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1766513A true CN1766513A (en) | 2006-05-03 |
| CN100356129C CN100356129C (en) | 2007-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100898459A Active CN100356129C (en) | 2004-10-26 | 2004-10-26 | Flat type heat pipe and its support structure |
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| CN (1) | CN100356129C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233429A (en) * | 2010-04-30 | 2011-11-09 | 奇鋐科技股份有限公司 | Manufacturing method of flat-plate heat pipe |
| CN102927842A (en) * | 2012-11-26 | 2013-02-13 | 殷逢宝 | LED temperature-uniforming plate |
| CN110573821A (en) * | 2017-04-28 | 2019-12-13 | 株式会社村田制作所 | vapor chamber |
| CN110831398A (en) * | 2018-08-13 | 2020-02-21 | 新光电气工业株式会社 | Loop type heat pipe and manufacturing method thereof |
| CN114264179A (en) * | 2022-01-18 | 2022-04-01 | 山东大学 | Miniature flat heat pipe with two condensation ends |
| DE102022205916A1 (en) | 2022-06-10 | 2023-12-21 | Robert Bosch Gesellschaft mit beschränkter Haftung | Heat pipe, method of making a heat pipe |
| CN110831398B (en) * | 2018-08-13 | 2024-05-10 | 新光电气工业株式会社 | Loop type heat pipe and manufacturing method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5896992A (en) * | 1981-12-07 | 1983-06-09 | Hitachi Ltd | Circuit substrate with heat pipe structure |
| CN2362092Y (en) * | 1999-03-22 | 2000-02-02 | 李嘉豪 | Ultra-thin hot plate structure |
| JP2001183080A (en) * | 1999-12-24 | 2001-07-06 | Furukawa Electric Co Ltd:The | Method for manufacturing compressed mesh wick and flat surface type heat pipe having compressed mesh wick |
| CN2421606Y (en) * | 2000-05-16 | 2001-02-28 | 李嘉豪 | Plate-heat pipe with capillary supporting structure |
| JP2002062072A (en) * | 2000-08-21 | 2002-02-28 | Fujikura Ltd | Flat plate type heat pipe and manufacturing method thereof |
| CN2608928Y (en) * | 2002-11-01 | 2004-03-31 | 王勤文 | Plate type heat pipe structure |
-
2004
- 2004-10-26 CN CNB2004100898459A patent/CN100356129C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233429A (en) * | 2010-04-30 | 2011-11-09 | 奇鋐科技股份有限公司 | Manufacturing method of flat-plate heat pipe |
| CN102927842A (en) * | 2012-11-26 | 2013-02-13 | 殷逢宝 | LED temperature-uniforming plate |
| CN110573821A (en) * | 2017-04-28 | 2019-12-13 | 株式会社村田制作所 | vapor chamber |
| CN110831398A (en) * | 2018-08-13 | 2020-02-21 | 新光电气工业株式会社 | Loop type heat pipe and manufacturing method thereof |
| CN110831398B (en) * | 2018-08-13 | 2024-05-10 | 新光电气工业株式会社 | Loop type heat pipe and manufacturing method thereof |
| CN114264179A (en) * | 2022-01-18 | 2022-04-01 | 山东大学 | Miniature flat heat pipe with two condensation ends |
| DE102022205916A1 (en) | 2022-06-10 | 2023-12-21 | Robert Bosch Gesellschaft mit beschränkter Haftung | Heat pipe, method of making a heat pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100356129C (en) | 2007-12-19 |
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