CN1779956A - Hot pipe and capillary structure - Google Patents
Hot pipe and capillary structure Download PDFInfo
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- CN1779956A CN1779956A CN 200410097815 CN200410097815A CN1779956A CN 1779956 A CN1779956 A CN 1779956A CN 200410097815 CN200410097815 CN 200410097815 CN 200410097815 A CN200410097815 A CN 200410097815A CN 1779956 A CN1779956 A CN 1779956A
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- heat pipe
- capillary structure
- wire rod
- polycyclic
- inwall
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
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Abstract
A heat tube is composed of a tube body, a capillary structure attached on inner surface of said tube body and the working fluid in said tube body. Said capillary structure is composed of a supporting frame and multiple slot generated by winding a wire material on said supporting frame. Its advantages are high elasticity, high heat conductivity and high penetrability.
Description
Technical field
The present invention relevant a kind of heat pipe, the particularly heat pipe of the relevant high-effect capillary structure of a kind of tool.
Background technology
Along with development of technology, the number of transistors on the electronic building brick unit are is more and more, the increase of caloric value when causing its work.On the other hand, the operating frequency of electronic building brick is also more and more higher, and the heat (switch loss) that the on/off conversion is caused during transistor work also is the reason that the electronic building brick caloric value increases.If fail these heats of suitable processing, will cause the reduction of chip arithmetic speed, severe patient even have influence on life-span of chip.
Because heat pipe (heat pipe) can be under the situation of very little sectional area and temperature difference, a large amount of heats is transmitted one section considerable distance, and do not need the additional power source supply to operate, provide under the situation about considering with the space utilization economy need not power, heat pipe has been one of heat-transferring assembly of widely using in the electronic radiation product.Heat pipe includes body, capillary structure and the working fluid of hollow and sealing, its groundwork principle is to utilize working fluid to absorb heat of vaporization at evaporation section, flow to and condense into liquid state after condensation segment is emitted heat, the capillary force that is provided by capillary structure is provided flows back to evaporation section, a recirculation like this constantly conducts to the elsewhere with heat.Therefore, capillary structure has critical influence for the performance of heat pipe, and at present the manufacture of capillary structure comprises grid, powder sintered and directly make multiple mode such as groove at tube wall.
Please refer to Figure 1A, it is the profile of existing grid type capillary structure.Shown in Figure 1A, grid type capillary structure (mesh wick) is attached on the thermotube wall 11a, and the capillary structure of being made up of grid 12 in 14 utilizations of working fluid of condensation end condensation is back to evaporation ends.The capillary force that the grid type capillary structure is provided is medium, the permeability of right its heat conductivity and water is relatively poor, and it is relatively poor in the attaching of the polygon bending part of heat pipe to be subject to the grid type capillary structure, so the grid type capillary structure generally is only applicable to the pipe class, can't meet the demand of different shape heat pipe.
Please refer to Figure 1B, it is the profile of existing plough groove type capillary structure.Shown in Figure 1B, utilize and on thermotube wall 11b, directly make a plurality of grooves 16 to form plough groove type capillary structure (groove wick), make the capillary structure that is utilized groove 16 to be formed in the working fluid 14 of condensation end condensation be back to evaporation ends.The heat conductivity of plough groove type capillary structure and the permeability of water are good, and so the hierarchy of skill of its manufacturing is higher, and the capillary force that can provide is relatively poor.Generally speaking, it is higher that the plough groove type capillary structure is subject to the manufacturing technology level, makes manufacturing cost higher, and how its technology then is difficult for realizing if desire is made radial groove with being to form axial groove.
Please refer to Fig. 1 C, it is the profile of existing sintered type capillary structure.Shown in Fig. 1 C, fill copper powder or other metal alloy powders etc. again after the heat-agglomerating, just can form sintered type capillary structure (sinter wick) 18 on thermotube wall 11c, the capillary force of utilizing sintered type capillary structure 18 to be provided in the working fluid 14 of condensation end condensation is back to evaporation ends.The available capillary force of sintered type capillary structure is good compared to grid type and plough groove type capillary structure, but the poor permeability of its heat conductivity and water, and because must be through the step of high temperature sintering, body is subjected to high temperature easily softening, make and its processing procedure relative complex increase cost.
Therefore, no matter use above-mentioned arbitrary processing procedure to make capillary structure, the market demand that its shortcoming is all arranged and be suitable for, in view of the continuous densification of assembled components in the various electronic product system, assembly aggregation degree constantly promotes, and causes its caloric value progressively to increase, and apparent thickness is constantly dwindled, therefore, the technological trend of following heat pipe product certainly will must be with more economical property, have more flexible mode, towards more high capacity of heat transfer, smaller szie characteristic develop.
Summary of the invention
Therefore, for addressing the above problem, the present invention proposes a kind of heat pipe, and it adopts the coil type capillary structure, not only simplifying the fabrication steps of traditional capillary structure, and the preferable design flexibility of tool, can be widely used in various heat pipe.
Propose a kind of capillary structure according to an aspect of the present invention, be applied in the heat pipe, it is characterized in that capillary structure is to be formed on the inwall of tube body of heat pipe with a polycyclic wireform.
Wherein, the polycyclic wire rod is to be attached on the inwall and to form a plurality of grooves.The polycyclic wire rod is utilize to twine a wire rod on a bracing frame and plastotype.The shape of bracing frame is the shape with respect to heat pipe, and the size of bracing frame just can be placed in the heat pipe, and the cross sectional shape of heat pipe is circle, ellipse, semi arch, rectangle, triangle, quadrangle, trapezoidal, pentagon, hexagon, octangle, equilateral polygon or inequilateral polygon.The material of polycyclic wire rod is metal, alloy, or nonmetallic materials, preferably is copper.The material of heat pipe is plastics, metal, alloy, or nonmetallic materials.
Propose a kind of heat pipe according to a further aspect of the invention, comprise body, capillary structure, and working fluid.Body has an inwall, and capillary structure is attached on the inboard wall of tube body, and working fluid then is placed in the body.Capillary structure is to be formed on the inboard wall of tube body with a polycyclic wireform and to form a plurality of grooves.
Wherein the polycyclic wire rod is utilize to twine a wire rod on a bracing frame and plastotype.The shape of bracing frame is the shape with respect to heat pipe, and the size of bracing frame just can be placed in the heat pipe, and the cross sectional shape of heat pipe is circle, ellipse, semi arch, rectangle, triangle, quadrangle, trapezoidal, pentagon, hexagon, octangle, equilateral polygon or inequilateral polygon.The material of polycyclic wire rod is metal, alloy, or nonmetallic materials, preferably is copper.The material of heat pipe is plastics, metal, alloy, or nonmetallic materials.Working fluid is inorganic compound, water, alcohols, liquid metal, ketone, refrigerant or organic compound.
Propose a kind of method of capillary structure in a heat pipe that form according to another aspect of the invention, comprise step: (a) provide a bracing frame; (b) twine a wire rod on bracing frame and form a polycyclic wire rod; (c) provide a body, have an inwall; And (d) attach the polycyclic wire rod on inwall and form a plurality of grooves.
The shape of bracing frame is the shape with respect to body, and the size of bracing frame just can be placed in the body, and the cross sectional shape of body is circle, ellipse, semi arch, rectangle, triangle, quadrangle, trapezoidal, pentagon, hexagon, octangle, equilateral polygon or inequilateral polygon.The material of polycyclic wire rod is metal, alloy or nonmetallic materials, preferably is copper.The material of body is plastics, metal, alloy or nonmetallic materials.
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.
Description of drawings
Figure 1A is the profile of existing grid type capillary structure.
Figure 1B is the profile of existing plough groove type capillary structure.
Fig. 1 C is the profile of existing sintered type capillary structure.
Fig. 2 A is the decomposing schematic representation according to a kind of heat pipe of preferred embodiment of the present invention.
Fig. 2 B is the profile of the capillary structure of preferred embodiment of the present invention.
Fig. 3 A, 3B, 3C are respectively the schematic diagrames of the capillary structure manufacturing process among Fig. 2 A.
Fig. 4 is the schematic diagram of another kind of capillary structure.
Embodiment
Please refer to Fig. 2 A, it is the decomposing schematic representation according to a kind of heat pipe of preferred embodiment of the present invention.In order to clearly demonstrate the structure of heat pipe of the present invention, the spy represents with a decomposing schematic representation.Heat pipe 20 of the present invention comprises body 21, capillary structure 22, working fluid (not shown) and a cover plate 23.Body 21 has an inwall 21a, and 22 of capillary structures are attached on the inboard wall of tube body 21a, and working fluid then is placed in the body 21.Body 21 can be a hollow tube, after capillary structure 22 forms, adds respectively in the body two ends that again a cover plate 23 seals, and injects working fluid, vacuumizes and finishes the making of heat pipe 20.Perhaps, the body 21 that can adopt an end to seal earlier forms capillary structure 22 on inboard wall of tube body 21a, then adds cover plate 23 again and seals, and inject working fluid, step such as vacuumize after, also can finish the making of heat pipe 20.
Heat pipe 20 can directly apply on the electronic building brick of a heating, or combines with radiating fin (heat sink), jointly heat is transferred to the elsewhere from the electronic building brick of heating.The electronic building brick of heating for example is CPU, transistor, server, high-order drafting card, hard disk, power supply unit, running control system, electronic multimedia mechanism, radio communication base station, high-order game machine (PS3, XBOX, Nintendo) etc.In addition, except that heat pipe and radiating fin, consider with user's needs and space, can increase in addition for example is fan etc., can further increase radiating effect.
Then, please be simultaneously with reference to Fig. 2 A and Fig. 2 B, Fig. 2 B is the profile of the capillary structure of preferred embodiment of the present invention.Capillary structure 22 is to be attached at inboard wall of tube body 21a with a polycyclic wire rod 26 go up to form, and polycyclic wire rod 26 can closely attach inboard wall of tube body 21a or at a distance of a slight distance, forms a short space and holds working fluid 24.Owing to form channel form between per two adjacent lines materials 24 and inboard wall of tube body 21a, make working fluid 24 that the capillary force that provides by these grooves is provided, be back to evaporation ends from condensation end.Compare with existing various capillary structure, the capillary structure 22 of present embodiment can have the advantage of high capillary force of high thermal conductivity, high osmosis and the grid type capillary structure of plough groove type capillary structure simultaneously concurrently.
Please refer to Fig. 3 A, 3B, 3C, it is respectively the schematic diagram of the capillary structure manufacturing process among Fig. 2 A.The production method of polycyclic wire rod 26 is utilize to twine a wire rod 26 on a bracing frame 28 and plastotype is the structure of a coiled type, can use a coiling board to carry out.At first, an end of wire rod 26 is fixed in the predetermined starting point S of one on the bracing frame 28, as shown in Figure 3A.Then, wire rod 26 can an imaginary axis X be a pivot, does continuous winding along a predetermined direction, shown in Fig. 3 B, makes and produces a spacing between adjacent two wire rods 26.Can be one between adjacent two wire rods 26 and be arranged in parallel or non-parallel arrangement, this is to decide on the required capillary structure groove of successive process is required.With respect to predetermined starting point S, on bracing frame 28, can set a predesigned end point E, when wire rod 26 is wound on the bracing frame 28 continuously and during to this predesigned end point E, represents that promptly wire rod 26 has been covered with the zone of bracing frame 28, and required polycyclic wire rod 26 completes, shown in Fig. 3 C.
Moreover wire rod 26 is not limited in the continuous canoe of the ring-type shown in Fig. 3 A to 3C, and for example, wire rod 26 also can be along multi-direction winding, and as shown in Figure 4, it is the schematic diagram of another kind of capillary structure.
In view of the technology that winds the line now is ripe day by day, the coiling technology is except that originally being applied to further expand to the application of heat pipe the field of transformer.Compared to the necessary filling powder of existing sintered type capillary structure, all complicated fabrication steps such as heat-agglomerating just are accomplished, heat pipe of the present invention, it has the coil type capillary structure of innovation, can utilize existing coiling technology to finish the making of capillary structure, processing procedure is simplified, further reduced manufacturing cost.
In addition, benefiting from can be according to the groove dimensions of the required capillary structure of successive process when wound wire, adjusted its line footpath and line-spacing, and control the capillary equivalent diameter apart from reaching between between the control copper cash, make design simpler with the processing procedure of making capillary structure, and the design flexibility that tool is better also can be arranged in pairs or groups mutually with grid, powder sintered and plough groove type capillary structure, is widely used in various heat pipe.
In sum, the heat pipe of the foregoing description, it has the coil type capillary structure of innovation, not only simplify the fabrication steps of traditional capillary structure, and the design flexibility that tool is preferable, compare with existing various capillary structure, the capillary structure of present embodiment can have the big advantage of capillary force of high thermal conductivity, high osmosis and the grid type capillary structure of plough groove type capillary structure simultaneously concurrently.
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 variation that can do various equivalences and replacement, so protection scope of the present invention is when looking accompanying being as the criterion that the application's claim scope defined.
Claims (20)
1. a capillary structure is applied in the heat pipe, it is characterized in that this capillary structure is to be formed on the inwall of this tube body of heat pipe with a polycyclic wireform.
2. capillary structure as claimed in claim 1 is characterized in that this polycyclic wire rod is to be attached on the inwall of this tube body of heat pipe.
3. capillary structure as claimed in claim 1 is characterized in that this polycyclic wire rod is attached on this inwall and forms a plurality of grooves.
4. capillary structure as claimed in claim 1 is characterized in that this polycyclic wire rod is utilize to twine a wire rod on a bracing frame and plastotype.
5. capillary structure as claimed in claim 4, the shape that it is characterized in that this bracing frame are the shapes with respect to this heat pipe, and the size of this bracing frame just can be placed in this heat pipe.
6. capillary structure as claimed in claim 1, the cross sectional shape that it is characterized in that this heat pipe is circle, ellipse, semi arch, rectangle, triangle, quadrangle, trapezoidal, pentagon, hexagon, octangle, equilateral polygon or inequilateral polygon.
7. capillary structure as claimed in claim 1, the material that it is characterized in that this polycyclic wire rod is metal, alloy or nonmetallic materials.
8. capillary structure as claimed in claim 1, the material that it is characterized in that this polycyclic wire rod is a copper.
9. capillary structure as claimed in claim 1, the material that it is characterized in that this heat pipe is plastics, metal, alloy or nonmetallic materials.
10. heat pipe comprises:
One body has an inwall;
One capillary structure is formed on this inwall; And
One working fluid is placed in this body;
It is characterized in that this capillary structure is to be formed on this inwall with a polycyclic wireform.
11. heat pipe as claimed in claim 10 is characterized in that this polycyclic wire rod is to be attached on the inwall of this tube body of heat pipe.
12. heat pipe as claimed in claim 10 is characterized in that this polycyclic wire rod is attached on this inwall and forms a plurality of grooves.
13. heat pipe as claimed in claim 10 is characterized in that this polycyclic wire rod is utilize to twine a wire rod on a bracing frame and plastotype.
14. heat pipe as claimed in claim 13, the shape that it is characterized in that this bracing frame are the shapes with respect to this heat pipe, and the size of this bracing frame just can be placed in this heat pipe.
15. heat pipe as claimed in claim 10, the cross sectional shape that it is characterized in that this heat pipe is circle, ellipse, semi arch, rectangle, triangle, quadrangle, trapezoidal, pentagon, hexagon, octangle, equilateral polygon or inequilateral polygon.
16. heat pipe as claimed in claim 10, the material that it is characterized in that this polycyclic wire rod is metal, alloy or nonmetallic materials.
17. heat pipe as claimed in claim 10, the material that it is characterized in that this polycyclic wire rod is a copper.
18. heat pipe as claimed in claim 10, the material that it is characterized in that this heat pipe is plastics, metal, alloy or nonmetallic materials.
19. heat pipe as claimed in claim 10 is characterized in that this working fluid is inorganic compound, water, alcohols, liquid metal, ketone, refrigerant or organic compound.
20. one kind forms the method for a capillary structure in a heat pipe, comprising:
One bracing frame is provided;
Twine a wire rod on this bracing frame and form a polycyclic wire rod;
One body is provided, has an inwall; And
Attach this polycyclic wire rod on this inwall and form a plurality of grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410097815 CN1779956A (en) | 2004-11-24 | 2004-11-24 | Hot pipe and capillary structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410097815 CN1779956A (en) | 2004-11-24 | 2004-11-24 | Hot pipe and capillary structure |
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| Publication Number | Publication Date |
|---|---|
| CN1779956A true CN1779956A (en) | 2006-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410097815 Pending CN1779956A (en) | 2004-11-24 | 2004-11-24 | Hot pipe and capillary structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121001A (en) * | 2017-05-27 | 2017-09-01 | 遵义中铂硬质合金有限责任公司 | Tie heat pipe and preparation method thereof |
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2004
- 2004-11-24 CN CN 200410097815 patent/CN1779956A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121001A (en) * | 2017-05-27 | 2017-09-01 | 遵义中铂硬质合金有限责任公司 | Tie heat pipe and preparation method thereof |
| CN107121001B (en) * | 2017-05-27 | 2019-04-19 | 遵义中铂硬质合金有限责任公司 | Tie heat pipe and preparation method thereof |
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