CN202002525U - Minitype plate heat pipe - Google Patents
Minitype plate heat pipe Download PDFInfo
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- CN202002525U CN202002525U CN201020654242XU CN201020654242U CN202002525U CN 202002525 U CN202002525 U CN 202002525U CN 201020654242X U CN201020654242X U CN 201020654242XU CN 201020654242 U CN201020654242 U CN 201020654242U CN 202002525 U CN202002525 U CN 202002525U
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Abstract
The utility model relates to a minitype plate heat pipe. The inner part of the heat pipe is formed by one group or more than one group of minitype annular channels. The annular channels comprise main channels and connection channels, wherein the connection channels are communicated with the two ends of the main channels, the main channels are respectively evaporation channels and return channels, and the connection channels are respectively liquid storing cavities and steam cavities. Working medium with phase inversion and heat exchange functions is filled in the channels at a certain liquid filling proportion so as to achieve efficient heat transfer of the heat pipe. The opening of the channel is sealed by welding, cold pressing, hot pressing or glue jointing. The minitype plate heat pipe of the utility model can greatly minimize shear force of boundary friction of vapor phase and liquid phase in the channels, has the advantages of low low thermal resistance, high heat transfer efficiency, as well as light weight, simple structure, strong pressure, wide application and easy installation, etc, and is an efficient, practical and novel heat pipe.
Description
Technical field
The utility model relates to phase-change heat transfer and heat transfer technology field, particularly a kind of plate-type heat-pipe with miniature annular channel.
Background technology
Heat pipe is a kind of a kind of high-efficiency heat conduction body that in the thermal evaporation of evaporation ends chance heat is passed to fast condensation end by the working medium in the closed container.In recent years, heat pipe is because its heat exchange property efficiently, receives people's concern more and more widely in fields such as the heat exchange of aerospace heat exchange, microelectronic heat radiation, solar energy, recuperations of heat, and the research worker has carried out a large amount of research to various heat pipes.
The conventional heat pipe technology is comparatively ripe, be used widely, but its inside will add capillary wick, and the structure more complicated is made cumbersomely, and volume is bigger, has limited its application.Single microminiature heat pipe though need not add capillary wick, has been realized miniaturization, and single heat transfer power is restricted.
For the ease of the larger area uniformly transfer heat, someone has studied and has developed the flat-plate heat pipe that independent, the parallel micro-channel of cluster forms micro heat pipe bunch and has microflute low-grade fever nest of tubes on the solid substrate, this class flat-plate heat pipe have heat output big, with thermal source and heat sink contact area greatly and advantage such as easy for installation.But this class heat pipe generally requires evaporation ends following, condensation end is last, its operation principle is that working medium upwards passes to condensation end in the thermal evaporation of evaporation ends chance with heat, liquid in condensation end heat radiation back condensation refluxes by the capillarity of microflute in the passage and the effect of gravity, realize heat conduction, vapour-liquid two-phase this moment reverse high-speed motion in same small passage, produce very big liquid-vaqor interface fricting shearing power, it can hinder the backflow of condensation end liquid, heat transfer resistance is increased greatly, restricted heat exchange efficiency, when heat flow is excessive even micro heat pipe can be burnt out, this situation all is the bottleneck that the tabular micro heat pipe of restriction bunch combination property further improves all the time.
The utility model content
The purpose of this utility model is: the deficiencies in the prior art such as big at aforesaid existing plate-type heat-pipe vapour-liquid frictional resistance, that thermal resistance is big, a kind of microminiature plate-type heat-pipe is provided, can reduce the interface friction shearing force of vapour phase in the passage or liquid phase to greatest extent, have that thermal resistance is low, heat exchange efficiency is high, and in light weight, simple in structure, bearing capacity is strong, advantage such as of many uses and easy for installation, make the performance of plate-type heat-pipe that great raising be arranged, and enlarge its range of application greatly.
The technical solution of the utility model is, described microminiature plate-type heat-pipe is, little shape annular channel of a group or more sealing is set in a matrix, has been filled with the working medium of phase-change heat-exchange effect in the passage.
Below the utility model made further specify.
Described matrix external form is Any shape such as cuboid, square, cylinder, polyhedron, spheroid, and miniature annular channel wherein has been filled with the phase-change heat-exchange effect after vacuumizing working medium forms micro heat pipe.
Described every group of miniature annular channel comprises plural main channel and is communicated with the interface channel at two ends, main channel respectively, and the main channel is for being arranged in parallel or non-parallel arrangement.
Described miniature annular channel is meant the annular channel of processing in panel-shaped base body, its size belongs to the scope of micro heat pipe.
Described miniature annular channel has been filled with the working medium of phase-change heat-exchange effect after vacuumizing, form micro heat pipe, and the main channel of every group of miniature annular channel is respectively evaporation channel and return flow line, and in general, the capillarity of return flow line is stronger.
In the utility model, the cross-sectional area of one group of described evaporation channel of little shape annular channel and return flow line and be shaped as one of following four kinds of situations:
(1) shape of cross section of evaporation channel and return flow line is identical, the cross-sectional area difference;
(2) cross-sectional area of evaporation channel and return flow line is identical, the shape of cross section difference;
(3) cross-sectional area of evaporation channel and return flow line is different, the shape of cross section difference;
(4) cross-sectional area of evaporation channel and return flow line is identical, and shape of cross section is identical.
Described miniature annular channel is separate, can be arranged to a row or multi-rowly, and each row is for one or more groups miniature annular channel.
The shape of cross section of described main channel is circle, ellipse, triangle, square, rectangle, polygon or abnormity.
In the utility model, can at the main channel wall little fin be set as required.
The plane that each bar limit of described miniature annular channel is formed is vertical with the larger-size surface of plate-type heat-pipe, or parallel with the larger-size surface of plate-type heat-pipe, perhaps becomes arbitrary angle with the larger-size surface of plate-type heat-pipe.
When the plane that each bar limit of the miniature annular channel of described plate-type heat-pipe is formed was perpendicular to the ground, evaporation channel was last, and the return flow line is following.
The main channel of every group of miniature annular channel is set to two or more.
The structure of described plate-type heat-pipe with miniature annular channel is for adopting metal or nonmetal or composite is monolithic extruded or punch forming, or adopts other technology each several part to be spliced.
The seal section that methods such as sealing to adopting of plate-type heat-pipe welded, glued joint, colds pressing, hot pressing form; Methods such as the sealing that is described plate-type heat-pipe with miniature annular channel miniature annular channel port of part in it is adopted welding (comprise and dissolve weldering, solid-state welding, friction stir welding, soldering, cold welding, thermocompression bonding etc.), glueds joint, colded pressing, hot pressing are sealed, and realize the efficient heat transfer of heat pipe.
The utility model is provided with evaporation channel and return flow line in each miniature annular channel of plate-type heat-pipe, and make the capillarity of one of them passage stronger, the main channel that capillarity is stronger is mainly used in liquid and refluxes, be referred to as return flow line or condensation channel, another main channel is mainly used in steam raising, is referred to as evaporation channel.Plate-type heat-pipe operation principle described in the utility model is, when evaporation ends is heated, because the effect of gas differential pressure, gas is selected to move to condensation end from evaporation channel, and working medium is after condensation end is cooled to liquid, because capillarity or add the effect of gravity, liquid selective moves to evaporation ends from condensation channel, basic realization gas circuit is separated with the liquid road, has reduced the fricting shearing power of vapour phase and liquid interface greatly, improves the heat transfer efficiency of plate-type heat-pipe.So move in circles, working medium has formed the circulation of flash heat transfer.
As known from the above, the utility model is a kind of plate-type heat-pipe with miniature annular channel, and its good effect has:
(1) owing to is provided with evaporation channel and return flow line in the annular channel of plate-type heat-pipe described in the utility model, and the capillarity of return flow line is stronger, can realize vapor-liquid separation substantially when making the heat pipe steady operation, the fricting shearing power of vapour phase and liquid phase motion reduces greatly, and the Heat Transfer of Heat Pipe on Heat Pipe ability is improved greatly;
(2) owing to steam channel and return flow line in the annular channel in the plate-type heat-pipe of the present utility model are interconnected, make the hydraulic fluid of inside heat pipe form the dynamic liquid compensating action that lacks, improved the anti-dry performance of heat pipe under big heat flow density greatly at fire end;
(3) because the little shape annular channel two ends in the plate-type heat-pipe of the present utility model respectively are provided with communication passage, compare with single independent micro heat pipe, be equivalent to increase vapor chamber volume and liquid storage cylinder volume, help the heat transfer of working medium evaporation process and the backflow of liquid, make the duty of heat pipe more stable.
(4) because the little shape annular channel in the plate-type heat-pipe described in the utility model is separate, only adjacent steam channel and return flow line are communicated with, with other not on the same group miniature annular channel then be what to separate, if a certain annular channel is impaired, other annular channel can be not influenced, whole heat pipe can continue to use, and further improved the reliability of plate-type heat-pipe.
Description of drawings
Fig. 1 is a kind of example structure schematic diagram of miniature annular channel of the present utility model (arrow is the heat flow direction);
Fig. 2 be among Fig. 1 A-A to view;
Fig. 3 to Fig. 5 is the embodiment schematic diagram of the main channel different cross section of the miniature annular channel of the utility model, wherein: Fig. 3 is that cross section, two main channels is respectively squares and triangles, Fig. 4 is that cross section, two main channels is respectively circle and triangle, and Fig. 5 is that cross section, two main channels all is rectangle (being provided with little fin in the backflow main channel); Each two main channel of organizing miniature annular channel is arranged above and below;
Fig. 6 is the schematic diagram of another embodiment of the utility model, and miniature annular channel has been arranged three rows from top to bottom; Among each row six groups of miniature annular channels are arranged, each two main channel of organizing miniature annular channel is arranged above and below;
Fig. 7 be among Fig. 6 B-B to structure;
Fig. 8 is the utility model schematic diagram of an embodiment again, and each is organized about two main channels of miniature annular channel and arranges.
Fig. 9 be among Fig. 8 C-C to structure;
In the drawings:
The 1-matrix, the 2-evaporation channel, the 3-return flow line,
The 4-liquid storage cylinder, the 5-vapor chamber, 6, the 7-seal,
The little fin of 8-.
The specific embodiment
As shown in Figure 1, when described plate-type heat-pipe is vertically placed (be main channel in position perpendicular to the ground or wide-angle work), vapor chamber 5 is last, liquid storage cylinder 4 is following, evaporator section absorbs heat, the liquid refrigerant that plays the phase-change heat-exchange effect in the liquid storage cylinder 4 is subjected to thermal evaporation, steam is under the effect of pressure reduction, select to move to condensation end by evaporation channel 2, the high-speed transfer heat, heat exchange was condensed into liquid after steam arrived condensation end, because the capillary force of return flow line 3 is much larger than evaporation channel 2, liquid working substance is back to liquid storage cylinder 4 substantially under return flow line 3 capillary forces and gravity effect; Also having a small amount of working medium when evaporation channel 2 is on-circular cross-section refluxes by evaporation channel, after in case micro heat pipe conducts heat and stablizes, counterclockwise tractive force of the inner formation of circulation canal, steam can rise by evaporation channel 2, working medium can be selected 3 backflows from the return flow line, can form stable dynamic circulation this moment, realizes vapor-liquid separation.When described plate-type heat-pipe horizontal positioned (being position shown in Figure 1 or low-angle work), its operation principle and last similar.
Fig. 3 to Fig. 5 is the utility model main channel different cross section shape embodiment schematic diagram, and at this moment can there be multiple combination the main channel, and Fig. 3 is rectangle evaporation channel 2 and triangle return flow line 3; Fig. 4 is circular evaporation channel 2 and triangle return flow line 3; Fig. 5 is circular evaporation channel 2 and rectangle return flow line 3 with little fin 8; Different and whether little fin is set according to the channel cross-section shape and size, also multiple combination can be arranged, in actual application, can select the various combination mode as required.
Fig. 6 is the schematic diagram of another embodiment of the utility model, compares with Fig. 1, Fig. 3 to Fig. 5, and its difference is that annular channel is set to many rows, and this moment, Heat Transfer of Heat Pipe on Heat Pipe power and structural strength improved a lot.
Fig. 8 is the schematic diagram of another embodiment of the utility model.The plane that this moment, the annular channel four edges was formed is parallel with the maximum planes of plate-type heat-pipe, this heat pipe thickness of slab is thinner, simple in structure, be easy to processing, when vertically placing, its operation principle and performance and heat pipe shown in Figure 1 are basic identical, but when small inclination is placed, and heat-transfer effect is as shown in Figure 1 structure ideal not.
Claims (10)
1. a microminiature plate-type heat-pipe is characterized in that, this plate-type heat-pipe is, little shape annular channel of a group or more sealing is set in a matrix, has been filled with the working medium of phase-change heat-exchange effect in the passage.
2. according to the described microminiature plate-type heat-pipe of claim 1, it is characterized in that, every group of miniature annular channel comprises two or more main channels and is communicated with the interface channel at two ends, main channel respectively, the main channel is made up of evaporation channel and return flow line, the capillarity of return flow line is stronger, and the main channel is for being arranged in parallel or non-parallel arrangement.
3. according to the described microminiature plate-type heat-pipe of claim 1, it is characterized in that described main channel is made up of evaporation channel and return flow line, the cross-sectional area of evaporation channel and return flow line and be shaped as one of following four kinds of situations:
(1) shape of cross section of evaporation channel and return flow line is identical, the cross-sectional area difference;
(2) cross-sectional area of evaporation channel and return flow line is identical, the shape of cross section difference;
(3) cross-sectional area of evaporation channel and return flow line is different, the shape of cross section difference;
(4) cross-sectional area of evaporation channel and return flow line is identical, and shape of cross section is identical.
4. according to the described microminiature plate-type heat-pipe of claim 1, it is characterized in that described miniature annular channel is arranged to a row or multi-row, each row is one or more groups miniature annular channel.
5. according to the described microminiature plate-type heat-pipe of claim 1, it is characterized in that the shape of cross section of described main channel is circle, ellipse, triangle, square or rectangular.
6. according to the described microminiature plate-type heat-pipe of claim 1, it is characterized in that, little fin is set at the main channel wall.
7. according to the described microminiature plate-type heat-pipe of claim 1, it is characterized in that, the plane that each bar limit of described miniature annular channel is formed is vertical with the larger-size surface of plate-type heat-pipe, or parallel with the larger-size surface of plate-type heat-pipe, perhaps becomes the inclination angle with the larger-size surface of plate-type heat-pipe.
8. according to the described microminiature plate-type heat-pipe of claim 1, it is characterized in that when the plane that each bar limit of the miniature annular channel of described plate-type heat-pipe is formed was perpendicular to the ground, evaporation channel was last, the return flow line is following.
9. according to the described microminiature plate-type heat-pipe of claim 1, it is characterized in that the structure of plate-type heat-pipe is for adopting metal or nonmetal or composite is monolithic extruded or punch forming.
10. according to the described microminiature plate-type heat-pipe of claim 1, it is characterized in that the seal section that sealing to adopting of plate-type heat-pipe welded, glued joint, colds pressing, one of hot pressing forms; Described being welded as dissolved weldering, solid-state welding, friction stir welding, soldering, cold welding or thermocompression bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020654242XU CN202002525U (en) | 2010-12-13 | 2010-12-13 | Minitype plate heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020654242XU CN202002525U (en) | 2010-12-13 | 2010-12-13 | Minitype plate heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202002525U true CN202002525U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020654242XU Expired - Fee Related CN202002525U (en) | 2010-12-13 | 2010-12-13 | Minitype plate heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202002525U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269571A (en) * | 2013-04-25 | 2013-08-28 | 上海卫星工程研究所 | Quick response energy storing heat dissipation plate |
| WO2019088301A1 (en) * | 2017-11-06 | 2019-05-09 | 大日本印刷株式会社 | Vapor chamber, electronic device, vapor chamber sheet, and methods for manufacturing vapor chamber sheet and vapor chamber |
| JP2019128143A (en) * | 2018-01-22 | 2019-08-01 | 大日本印刷株式会社 | Vapor chamber, electronic apparatus and sheet for vapor chamber |
-
2010
- 2010-12-13 CN CN201020654242XU patent/CN202002525U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269571A (en) * | 2013-04-25 | 2013-08-28 | 上海卫星工程研究所 | Quick response energy storing heat dissipation plate |
| CN103269571B (en) * | 2013-04-25 | 2016-04-20 | 上海卫星工程研究所 | A kind of energy storage of response fast heating panel |
| WO2019088301A1 (en) * | 2017-11-06 | 2019-05-09 | 大日本印刷株式会社 | Vapor chamber, electronic device, vapor chamber sheet, and methods for manufacturing vapor chamber sheet and vapor chamber |
| JP2019128143A (en) * | 2018-01-22 | 2019-08-01 | 大日本印刷株式会社 | Vapor chamber, electronic apparatus and sheet for vapor chamber |
| JP7243135B2 (en) | 2018-01-22 | 2023-03-22 | 大日本印刷株式会社 | Vapor chambers, electronics, and sheets for vapor chambers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20111005 Termination date: 20121213 |