CN103486889A - Ultra-thin heat pipe - Google Patents
Ultra-thin heat pipe Download PDFInfo
- Publication number
- CN103486889A CN103486889A CN201310469903.XA CN201310469903A CN103486889A CN 103486889 A CN103486889 A CN 103486889A CN 201310469903 A CN201310469903 A CN 201310469903A CN 103486889 A CN103486889 A CN 103486889A
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- China
- Prior art keywords
- heat pipe
- metal powder
- sidewall
- part sidewall
- powder sintered
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0233—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the conduits having a particular shape, e.g. non-circular cross-section, annular
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to the field of heat pipe structures, in particular to an ultra-thin heat pipe. The ultra-thin heat pipe comprises a pipe body, wherein the pipe body comprises a middle side wall and end portion side walls connected with the middle side wall, the inner wall of the middle side wall is provided with a metal powder sintering portion, the side, away from the middle side wall, of the metal powder sintering portion is provided with a plurality of evenly distributed protrusions, and steam channels are formed among the metal powder sintering portion, the protrusions, the middle side wall and the end portion side walls. The metal powder sintering portion is provided with the protrusions which are intermittently or continuously arranged, a groove is formed between every two adjacent protrusions, the groove-shaped fluid return channels are formed in the spaces formed by the grooves and the middle side wall, axial heat transferring ability of the heat pipe is effectively reinforced, additionally, due to arrangement of the protrusions, the porosity is increased, fluid return resistance in the heat pipe is reduced, heat transferring efficiency is improved, heat conductive performance of the heat pipe is reinforced, and meanwhile, materials and production cost are saved.
Description
Technical field
The present invention relates to the heat pipe structure field, relate in particular to a kind of ultrathin heat pipe.
Background technology
Along with micro computer industry (notebook computer, panel computer) product structure towards more compact and processor more towards at a high speed, high-power future development.Yet in the process constantly promoted in properties of product, the problem that its caloric value causes is day by day serious, and the electronic component caloric value increases day by day, for solving foregoing problems, many passive type thermal transmission elements are suggested in succession, as: ultrathin heat pipe, loop heat pipe, flat-plate heat pipe, the equal backing of steam groove and fin etc.
Heat pipe is a kind of heat abstractor with high heat conduction, and it is comprised of shell, liquid-sucking core and end cap, at the evaporator section of heat pipe, hydraulic fluid in tube core is subject to thermal evaporation, and take away heat, and the evaporation latent heat that this heat is hydraulic fluid, steam flows to the condensation segment of heat pipe from steam channel, condense into liquid, emit latent heat, under the effect of capillary force, liquid backflow is to evaporator section simultaneously, so complete a closed circulation, thereby a large amount of heats is passed to radiating segment from bringing-up section.
Heat pipe is divided into following a few class according to the tectonic type of tube core: (1) is close to individual layer and the multilayer web-roll core class heat pipe of tube wall; (2) sintered powder tube core class heat pipe; (3) axial slot formula tube core class heat pipe; (4) combined die class heat pipe.Wherein, axial slot formula tube core class heat pipe is to open axial stria so that capillary pressure head and liquid reflux channel to be provided at inner wall of tube shell, and such heat pipe can reach higher axial heat conduction ability.Sintered powder tube core class heat pipe has higher capillary suction force, can larger improvement thermal resistance radially, therefore, sintered powder tube core class heat pipe is selected to produce on a large scale and use by a large amount of producers.
But the permeability of sintered powder tube core class heat pipe is poor, therefore the axial heat conduction ability is little than axial slot formula tube core class heat pipe, and the powder sintered section of existing sintered powder tube core class inside heat pipe, its smooth surface, cause porosity and heat transfer efficiency limited, can not farthest obtain higher heat conductivility.
Summary of the invention
The object of the present invention is to provide a kind of ultrathin heat pipe, not only can effectively strengthen the axial heat conduction ability of heat pipe, and can increase porosity, reduce the liquid backflow resistance in heat pipe, improve heat transfer efficiency, strengthen the heat conductivility of heat pipe.
For reaching this purpose, the present invention by the following technical solutions:
The invention provides a kind of ultrathin heat pipe, comprise body, described body comprises middle part sidewall and the end sidewalls be connected with described middle part sidewall;
The inwall of described middle part sidewall is provided with metal powder sintered section;
Be provided with a plurality of equally distributed projections away from the side on described metal powder sintered of described middle part sidewall;
Form steam channel between described metal powder sintered section, described projection and described middle part sidewall and described end sidewalls.
As preferred version of the present invention, described projection continuously or be interrupted and arrange.
As preferred version of the present invention, described middle part sidewall comprises the first middle part sidewall and the second middle part sidewall;
Described end sidewalls comprises first end sidewall and the second end sidewall;
The first end of described the first middle part sidewall is connected with the first end of described first end sidewall;
The second end of described the first middle part sidewall is connected with the first end of described the second end sidewall;
The first end of described the second middle part sidewall is connected with the second end of described first end sidewall;
The second end of described the second middle part sidewall is connected with the second end of described the second end sidewall.
As preferred version of the present invention, on the inwall of described the first middle part sidewall or the inwall of described the second middle part sidewall be provided with described metal powder sintered section.
As preferred version of the present invention, be equipped with described metal powder sintered section on the inwall of described the first middle part sidewall and on the inwall of described the second middle part sidewall, at least one described metal powder sintered is provided with described projection.
As preferred version of the present invention, described middle part sidewall is the flat type tube wall, and the cross section of described end sidewalls is arc.
As preferred version of the present invention, the height sum H of the thickness of described metal powder sintered section and described projection is 0.8-1.0mm.
As preferred version of the present invention, the height sum H of the thickness of described metal powder sintered section and described projection is 0.9mm.
As preferred version of the present invention, the mean breadth of described metal powder sintered section is 6.5-7.0mm.
As preferred version of the present invention, the mean breadth of described metal powder sintered section is 6.8mm.
Beneficial effect of the present invention is:
The inwall of ultrathin heat pipe provided by the invention is provided with metal powder sintered section, metal powder sintered is provided with a plurality of equally distributed projections, projection is for being interrupted or arranging continuously, be formed with groove between adjacent two projections, the space that groove and middle part sidewall form has formed the fluid return flow line of groove shape, effectively strengthened the axial heat conduction ability of heat pipe, in addition, the setting of this projection has also increased porosity, reduced the liquid backflow resistance in heat pipe, improved heat transfer efficiency, strengthened the heat conductivility of heat pipe, simultaneously, also saved material, saved production cost.
The accompanying drawing explanation
Fig. 1 is the front structural representation of ultrathin heat pipe moulding that the embodiment of the present invention one provides;
Fig. 2 is the structural representation after the ultrathin heat pipe moulding that provides of the embodiment of the present invention one;
Fig. 3 is the front structural representation of ultrathin heat pipe moulding that the embodiment of the present invention two provides;
Fig. 4 is the structural representation after the ultrathin heat pipe moulding that provides of the embodiment of the present invention two.
Wherein:
1, body; 2, metal powder sintered section; 3, steam channel; 4, projection;
11, middle part sidewall; 12, end sidewalls;
110, the first middle part sidewall; 111, the second middle part sidewall; 120, first end sidewall; 121, the second end sidewall.
The specific embodiment
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by the specific embodiment.
Embodiment mono-
As depicted in figs. 1 and 2, a kind of ultrathin heat pipe that the present embodiment provides, comprise body 1, and body 1 comprises middle part sidewall 11 and the end sidewalls 12 be connected with middle part sidewall 11.Wherein, it is the copper pipe that 6mm or 8mm, wall thickness are 0.2mm that body 1 is selected internal diameter, also can select aluminum pipe or stainless steel tube or the titanium pipe of above-mentioned specification.Middle part sidewall 11 is the flat type tube wall, and the cross section of end sidewalls 12 is arc, is preferably semicircle.
In the present embodiment, middle part sidewall 11 comprises the first middle part sidewall 110 and the second middle part sidewall 111, and end sidewalls 12 comprises first end sidewall 120 and the second end sidewall 121.The first end of the first middle part sidewall 110 is connected with the first end of first end sidewall 120, and the second end of the first middle part sidewall 110 is connected with the first end of the second end sidewall 121.The first end of the second middle part sidewall 111 is connected with the second end of first end sidewall 120, and the second end of the second middle part sidewall 111 is connected with the second end of the second end sidewall 121.
The inwall of the second middle part sidewall 111 is provided with metal powder sintered 2.Form steam channel 3 between metal powder sintered 2 and middle part sidewall 11 and end sidewalls 12.Be provided with a plurality of equally distributed protruding 4 away from the side on metal powder sintered 2 of the second middle part sidewall 111, projection 4 is interrupted setting or is arranged continuously, the present embodiment is preferably to be interrupted and arranges, be formed with groove between adjacent two projections 4, the space that groove and the first middle part sidewall 110 form has formed the fluid return flow line of groove shape, effectively strengthened the axial heat conduction ability of heat pipe, in addition, the setting of this projection 4 has not only increased porosity, reduced the liquid backflow resistance in heat pipe, improved heat transfer efficiency, strengthened the heat conductivility of heat pipe, and saved material, saved production cost.
In addition, the thickness of metal powder sintered 2 is 0.8-1.0mm with the height sum H of projection 4, is preferably 0.9mm, and the mean breadth of metal powder sintered 2 is 6.5-7.0mm, is preferably 6.8mm.On the basis of existing technology, effectively increased the mean breadth of metal powder sintered 2, reduced the thickness of metal powder sintered 2, thereby it is long-pending to have increased heat-transfer surface, has further improved heat transfer efficiency, has strengthened heat conductivility.
Body 1 is to be obtained through filling the operations such as metal dust, sintering and flattening moulding by pipe.In sintering process, need the special plug that will make in advance to fix wherein, and be filled with powder particle in metal powder sintered 2, for example: copper powder or aluminium powder or nickel powder.During the powder particle sintering, be adhered, the engagement edge of the powder particle after sintering is more smooth, and the bond strength between powder particle increases.The set positions of exerting pressure during flattening is on middle part sidewall 11, be formed with steam channel 3 between latter metal powder sintered 2 of flattening, projection 4 and middle part sidewall 11 and end sidewalls 12, make steam effectively from steam channel 3, to flow to condensation end, then, steam is formed liquid medium at condensation segment, and liquid medium returns to the hot-zone section under capillarity along capillary structure.
Embodiment bis-
As shown in Figure 3 and Figure 4, the difference of the present embodiment and embodiment mono-is: in the present embodiment, be equipped with metal powder sintered 2 on the inwall of the first middle part sidewall 110 and on the inwall of the second middle part sidewall 111, form steam channel 3 between two metal powder sintered 2 and middle part sidewall 11 and end sidewalls 12, wherein, a side of metal powder sintered 2 away from the second middle part sidewall 111 is provided with projection 4, although the space of steam channel is little than the space of the steam channel of embodiment mono-, but the flow rate of steam and the heat transfer efficiency of heat pipe have been improved, heat conductivility is good, be more suitable for the heat abstractor as micromodule equipment.
Abovely in conjunction with the specific embodiment, know-why of the present invention has been described.These are described is in order to explain principle of the present invention, and can not be interpreted as by any way limiting the scope of the invention.Explanation based on herein, those skilled in the art does not need to pay performing creative labour can associate other specific embodiment of the present invention, and these modes all will fall within the scope of protection of the present invention.
Claims (10)
1. a ultrathin heat pipe, is characterized in that,
Comprise body (1), described body (1) comprises middle part sidewall (11) and the end sidewalls (12) be connected with described middle part sidewall (11);
The inwall of described middle part sidewall (11) is provided with metal powder sintered (2);
Be provided with a plurality of equally distributed projections (4) away from the side on described metal powder sintered (2) of described middle part sidewall (11);
Form steam channel (3) between described metal powder sintered (2), described projection (4) and described middle part sidewall (11) and described end sidewalls (12).
2. a kind of ultrathin heat pipe according to claim 1, is characterized in that,
Described projection (4) continuously or be interrupted and arrange.
3. a kind of ultrathin heat pipe according to claim 1, is characterized in that,
Described middle part sidewall (11) comprises the first middle part sidewall (110) and the second middle part sidewall (111);
Described end sidewalls (12) comprises first end sidewall (120) and the second end sidewall (121);
The first end of described the first middle part sidewall (110) is connected with the first end of described first end sidewall (120);
The second end of described the first middle part sidewall (110) is connected with the first end of described the second end sidewall (121);
The first end of described the second middle part sidewall (111) is connected with the second end of described first end sidewall (120);
The second end of described the second middle part sidewall (111) is connected with the second end of described the second end sidewall (121).
4. a kind of ultrathin heat pipe according to claim 3, is characterized in that,
On the inwall of described the first middle part sidewall (110) or the inwall of described the second middle part sidewall (111) be provided with described metal powder sintered (2).
5. a kind of ultrathin heat pipe according to claim 3, is characterized in that,
Be equipped with described metal powder sintered (2) on the inwall of described the first middle part sidewall (110) and on the inwall of described the second middle part sidewall (111), at least one described metal powder sintered (2) are provided with described projection (4).
6. a kind of ultrathin heat pipe according to claim 1, is characterized in that,
Described middle part sidewall (11) is the flat type tube wall, and the cross section of described end sidewalls (12) is arc.
7. a kind of ultrathin heat pipe according to claim 1, is characterized in that,
The height sum H of the thickness of described metal powder sintered (2) and described projection (4) is 0.8-1.0mm.
8. a kind of ultrathin heat pipe according to claim 1, is characterized in that,
The height sum H of the thickness of described metal powder sintered (2) and described projection (4) is 0.9mm.
9. a kind of ultrathin heat pipe according to claim 1, is characterized in that,
The mean breadth of described metal powder sintered (2) is 6.5-7.0mm.
10. a kind of ultrathin heat pipe according to claim 1, is characterized in that,
The mean breadth of described metal powder sintered (2) is 6.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310469903.XA CN103486889A (en) | 2013-10-10 | 2013-10-10 | Ultra-thin heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310469903.XA CN103486889A (en) | 2013-10-10 | 2013-10-10 | Ultra-thin heat pipe |
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| Publication Number | Publication Date |
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| CN103486889A true CN103486889A (en) | 2014-01-01 |
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| CN201310469903.XA Pending CN103486889A (en) | 2013-10-10 | 2013-10-10 | Ultra-thin heat pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972218A (en) * | 2017-03-07 | 2017-07-21 | 华南理工大学 | The cooling device and method of a kind of cylinder-type power battery group |
| US20200227880A1 (en) * | 2019-01-10 | 2020-07-16 | Hisense Laser Display Co., Ltd. | Laser light source and laser projection device |
| CN111615310A (en) * | 2020-06-16 | 2020-09-01 | 东莞市鼎通精密科技股份有限公司 | Heat pipe and self-radiating connector |
| US11592145B2 (en) | 2019-01-10 | 2023-02-28 | Hisense Laser Display Co., Ltd. | Laser light source and laser projection device |
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| US4274479A (en) * | 1978-09-21 | 1981-06-23 | Thermacore, Inc. | Sintered grooved wicks |
| JP2000161879A (en) * | 1998-11-20 | 2000-06-16 | Fujikura Ltd | Planar heat pipe |
| US20100319882A1 (en) * | 2009-06-17 | 2010-12-23 | Yeh-Chiang Technology Corp. | Ultra-thin heat pipe and manufacturing method thereof |
| CN102466421A (en) * | 2010-11-08 | 2012-05-23 | 富瑞精密组件（昆山）有限公司 | Flat heat pipe and manufacture method thereof |
| CN102829659A (en) * | 2012-08-22 | 2012-12-19 | 华南理工大学 | Micro-crack flat heat pipe and manufacturing method thereof |
| CN102878845A (en) * | 2012-09-18 | 2013-01-16 | 华南理工大学 | Inner groove porous strengthened boiling micro-channel structure, manufacture method and application |
| CN203489759U (en) * | 2013-10-10 | 2014-03-19 | 昆山德泰新材料科技有限公司 | Ultra-thin heat pipe |
-
2013
- 2013-10-10 CN CN201310469903.XA patent/CN103486889A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4274479A (en) * | 1978-09-21 | 1981-06-23 | Thermacore, Inc. | Sintered grooved wicks |
| JP2000161879A (en) * | 1998-11-20 | 2000-06-16 | Fujikura Ltd | Planar heat pipe |
| US20100319882A1 (en) * | 2009-06-17 | 2010-12-23 | Yeh-Chiang Technology Corp. | Ultra-thin heat pipe and manufacturing method thereof |
| CN102466421A (en) * | 2010-11-08 | 2012-05-23 | 富瑞精密组件（昆山）有限公司 | Flat heat pipe and manufacture method thereof |
| CN102829659A (en) * | 2012-08-22 | 2012-12-19 | 华南理工大学 | Micro-crack flat heat pipe and manufacturing method thereof |
| CN102878845A (en) * | 2012-09-18 | 2013-01-16 | 华南理工大学 | Inner groove porous strengthened boiling micro-channel structure, manufacture method and application |
| CN203489759U (en) * | 2013-10-10 | 2014-03-19 | 昆山德泰新材料科技有限公司 | Ultra-thin heat pipe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972218A (en) * | 2017-03-07 | 2017-07-21 | 华南理工大学 | The cooling device and method of a kind of cylinder-type power battery group |
| US20200227880A1 (en) * | 2019-01-10 | 2020-07-16 | Hisense Laser Display Co., Ltd. | Laser light source and laser projection device |
| US11570411B2 (en) * | 2019-01-10 | 2023-01-31 | Hisense Laser Display Co., Ltd. | Laser light source and laser projection device |
| US11592145B2 (en) | 2019-01-10 | 2023-02-28 | Hisense Laser Display Co., Ltd. | Laser light source and laser projection device |
| CN111615310A (en) * | 2020-06-16 | 2020-09-01 | 东莞市鼎通精密科技股份有限公司 | Heat pipe and self-radiating connector |
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Application publication date: 20140101 |