CN101995183A - Flat heat pipe - Google Patents
Flat heat pipe Download PDFInfo
- Publication number
- CN101995183A CN101995183A CN2009103058200A CN200910305820A CN101995183A CN 101995183 A CN101995183 A CN 101995183A CN 2009103058200 A CN2009103058200 A CN 2009103058200A CN 200910305820 A CN200910305820 A CN 200910305820A CN 101995183 A CN101995183 A CN 101995183A
- Authority
- CN
- China
- Prior art keywords
- flat plate
- top cover
- heat tube
- capillary structure
- plate heat
- Prior art date
- 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.)
- Pending
Links
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 241000294743 Gamochaeta Species 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- 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)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a flat heat pipe which comprises a sealed cavity formed by a bottom cover and a top cover, wherein a defined amount of work medium is arranged in the sealed cavity body, and a capillary structure is arranged on the inner wall face of the sealed cavity; the top cover is a heat releasing part; the bottom cover is provided with a soleplate opposite to the top cover, and the soleplate is provided with a heat absorbing part; and a capillary structure draining post is also arranged in the sealed cavity to connect the heat absorbing part to the top cover and used for leading the condensing work medium on the top cover to the heat absorbing part. Compared with the prior art, the inner space of the heat pipe can be effectively utilized by setting the draining post of the flat heat pipe in the invention, thus the heat transmission performance of the flat heat pipe is enhanced.
Description
Technical field
The present invention relates to a kind of heat pipe, be meant a kind of flat plate heat tube that is used for electronic element radiating especially.
Background technology
For solving high-speed computer high density heat dissipation problem, industry generally utilizes the phase change device to dispel the heat or conduct heat at present, such as heat pipe (Heat Pipe), loop hot-pipe (Loop Heat Pipe) and flat plate heat tube products such as (VaporChamber) commonly used at present.With regard to heat pipe, it is little because of volume, utilize the latent heat of phase change interaction energy carry fast a large amount of heat energy, uniformity of temperature profile, simple structure, in light weight, need not characteristics such as applied external force, life-span length, low thermal resistance, long distance transmission, therefore the radiating requirements that meets fields such as present computer is widely used for solving heat dissipation problem.
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 the heat transfer area bigger than traditional type heat pipe, and more meets light, thin, short, little high practical value, and is widely applied on the electronic product of large-scale radiating surface.Be a large amount of productions, mostly flat plate heat tube is to utilize two dull and stereotyped formation one confined spaces up and down, and forms capillary structure on the inwall of two flat boards, and fills working media.Less because of its wording depth, the gaseous working medium in it impacts the liquid working media that refluxes, thereby makes its vapor action produce the maximum heat biography effect that offseting phenomenon can't effectively be brought into play flat plate heat tube.Therefore, how effectively utilizing flat pipe volume inside is that its necessity is arranged.
Summary of the invention
In view of this, be necessary to provide a kind of flat plate heat tube that effectively utilizes the inner space.
A kind of flat plate heat tube, the one airtight cavity that forms by a bottom and a top cover, be provided with an amount of working media in this airtight cavity, and inner wall surface thereof is provided with capillary structure, and described top cover is a heat unit, and described bottom has a base plate relative with this top cover, be formed with an endothermic section on this base plate, also be provided with a capillary structure drainage post in the described airtight cavity, this drainage post links to each other described endothermic section with described top cover, is used for the condensation working media on the top cover is guided to this endothermic section.
Compared with prior art, the setting of the drainage post of the flat plate heat tube among the present invention can make the space of inside heat pipe be utilized effectively, thereby has improved the heat transfer property of this flat plate heat tube.
With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments.
Description of drawings
Fig. 1 is the cutaway view of first embodiment of the invention middle plateform formula heat pipe.
Fig. 2 is the schematic diagram of the capillary structure of second embodiment of the invention middle plateform formula heat pipe.
Fig. 3 is the schematic diagram of the capillary structure of third embodiment of the invention middle plateform formula heat pipe.
Fig. 4 is the schematic diagram of the capillary structure of fourth embodiment of the invention middle plateform formula heat pipe.
The specific embodiment
Figure 1 shows that the cutaway view of flat plate heat tube first embodiment of the present invention.This flat plate heat tube is combined to form a heat abstractor with some radiating fins usually, to be dispelled the heat such as thermals source such as computer CPUs, this flat plate heat tube comprises one by bottom 10 and the airtight cavity that forms with a top cover 30 that this bottom 10 is tightly connected, pressure in this airtight cavity is lower than atmospheric pressure, be provided with a capillary structure 50 and a drainage post 70 in it, and contain an amount of working media.Capillary structure 50 is attached at bottom 10 and top cover 30 inner surfaces, and drainage post 70 is located between bottom 10 and the top cover 30.This flat plate heat tube is roughly rectangular tabular in the present embodiment, is appreciated that ground, and it also can the rounded tabular shape that waits other to be fit in some other embodiment.
This bottom 10 is bowl-shape setting, and it adopts the good material of heat conductivility (for example, copper, aluminium) to make, and it comprises a base plate 11 and the side plate 13 that extends vertically upward from base plate 11 lateral margins.This base plate 11 is convexly equipped with one downwards and is used for the endothermic section 113 that is sticked with thermal source, and the middle part of this base plate 11 and rectangular preferably is located in this endothermic section 113, and its size equals or be slightly larger than the size of thermal source.Preferably, be distributed in the capillary structure 50 on the bottom 10, the thickness at position that is positioned at this endothermic section 113 is less, can evaporate apace so that be positioned at the working media of endothermic section 113 during work.This endothermic section 113 has a center, in this center, when the working media around the endothermic section 113 is drawn to the endothermic section by capillary force, be everlasting the no show center promptly to produce the phase change effect, arrive the center and can't arrive the working media that capacity maybe can't be arranged, and 113 position, center forms an inactive area in the endothermic section easily, and the dry combustion method phenomenon occurs.
This top cover 30 is a rectangle plate body, and it also adopts such as the good material of heat conductivilitys such as copper, aluminium and makes, and its edge is incorporated into the apical margin of the side plate 13 of bottom 10.This top cover 30 is as the heat unit of flat plate heat tube of the present invention, it is to be used for the heats of working media 113 absorptions from the endothermic section are distributed, make working media steam be condensed into liquid state, preferably, its outer surface is sticked some radiating fins (figure does not show) with the increase area of dissipation, and provides fan (figure does not show) to drive Forced Air Convection so that radiating efficiency to be provided.
This capillary structure 50 is preferably a continuous structure that is attached at bottom 10 and top cover 30.The base plate 11 that capillary structure 50 is positioned at bottom 10 is regional big than other with the thickness of side plate 13 junctions, its longitudinal section is roughly triangular in shape, be that its thickness reduces to relative both sides gradually from the middle part, thereby the base plate 11 and the turning of side plate 13 are filled and led up, so be provided with, can shorten the path that working media refluxes on the one hand, quicken the backflow of working media, can avoid on the other hand in flat plate heat tube inside because of the short and small so hysteresis zone that its vapor action power is cancelled out each other and formed in space, thereby prevent from around base plate 11, to cause inactive area.
This drainage post 70 is a capillary structure, and its diameter from up to down reduces gradually, thereby makes its longitudinal section be trapezoidal, and this drainage post 70 is vertical setting, and the inner surface center of the endothermic section 113 of bottom 10 is replaced in its bottom, and top cover 30 inner surfaces are replaced on its top.The porosity communication setting of the hole of drainage post 70 inside and capillary structure 50 inside.Preferably, the quantity of this drainage post 70 only is one, and its side wall surface is the streamlined of indent, operating path with the working media steam that adapts to flat plate heat tube inside, be that working media is after 113 evaporations of endothermic section, the steam at middle part at first upwards moves a segment distance, again to diffusion all around, thereby directly over endothermic section 113, form an obconic steam stagnation district, so, the setting of drainage post has utilized this steam stagnation district preferably, thereby can't or seldom have influence on original operating path of working media steam.
The surface area of the bottom of this drainage post 70 is less than the area of the inner surface of endothermic section 113, it is the part (center) that drainage post 70 only covers endothermic section 113, so be provided with, in the time of can preventing that then endothermic section 113 working media all around is drawn to endothermic section 113 by capillary force, the no show center of being everlasting has promptly produced the phase change effect, arrive the center and can't arrive the working media that capacity maybe can't be arranged, and 113 center forms an inactive area in the endothermic section, and dry combustion method or the relatively poor phenomenon of heat transfer efficiency occur.
Particularly, in the ordinary course of things, the measure of taking in order to prevent working media from can't arrive the center, usually the measure of taking all is the capillary structures that only thicken endothermic section 113, yet, after merely capillary structure being thickened, but be unfavorable for the evaporation of working media, thereby still brought adverse influence.And its one side of the flat plate heat tube in the present embodiment is because drainage post 70 only covers the part (being the center) of endothermic section 113, thereby the capillary structure 50 of the part that is not capped on the endothermic section 113 (zone beyond the center) can be provided with thinlyyer relatively, be beneficial to the evaporation of working media, capillary structure 50 relative approaching owing to endothermic section 113 cause the corresponding problems that weaken the formation of 113 centers in the endothermic section inactive area that causes of capillary force on the other hand, can directly the center that the condensation working media is pumped to endothermic section 113 be guaranteed by drainage post 70 again from top cover 30, therefore, can be in the working media rapid evaporation that guarantees whole endothermic section 113, can access in time replenishing of the condensation working media that refluxes from heat unit (top cover 30), thereby improve the heat transfer efficiency of this flat plate heat tube.
Below in conjunction with operation principle the flat plate heat tube in this enforcement is described further:
During work, the endothermic section 113 of bottom 10 absorbs the heat of thermal source, simultaneously these heats is conducted to its inner working media, thereby makes the working media evaporation.These working media steam cool off after rising to top cover 30 inner surfaces, form liquid working media.Part liquid working media is back to endothermic section 113 along capillary structure 50, and another part liquid working media is back to endothermic section 113 along drainage post 70.In the present embodiment, big than its bottom because of the top of drainage post 70, its top is bigger with the contact area that is positioned at the capillary structure 50 on the top cover 30, thereby working media can easier backflow by drainage post 70.
See also Fig. 2, it shows the flat plate heat tube in the second embodiment of the invention, and the structure of this flat plate heat tube is similar to first embodiment, and its main distinction is: the middle part of drainage post 70a offer one from the top to the groove 71 of bottom.The aperture of groove 71 from up to down reduces gradually, thereby makes the longitudinal section of its drainage post 70a be horn-like.Understandable, this groove 71 can square or other shapes.
Fig. 3 is the schematic diagram of the drainage post 70b of third embodiment of the invention flat plate heat tube.Present embodiment middle plateform formula heat pipe is similar to the first embodiment middle plateform formula heat pipe, and its main distinction is: the drainage post 70b longitudinal section in the present embodiment is rectangle.
Fig. 4 is the schematic diagram of the drainage post 70c of fourth embodiment of the invention flat plate heat tube.Flat plate heat tube in the present embodiment is similar to the flat plate heat tube among the 3rd embodiment, and its main distinction is: drainage post 70c middle part offers a top-down cylindric groove 73.
Claims (9)
1. flat plate heat tube, the one airtight cavity that forms by a bottom and a top cover, be provided with an amount of working media in this airtight cavity, and inner wall surface thereof is provided with capillary structure, described top cover is a heat unit, described bottom has a base plate relative with this top cover, be formed with an endothermic section on this base plate, it is characterized in that: also be provided with a capillary structure drainage post in the described airtight cavity, this drainage post links to each other described endothermic section with described top cover, be used for the condensation working media on the top cover is guided to this endothermic section.
2. flat plate heat tube as claimed in claim 1 is characterized in that: only be provided with a drainage post in the described airtight cavity.
3. flat plate heat tube as claimed in claim 1 is characterized in that: the bottom area of described drainage post is little than the endothermic section, and only covers the center of described endothermic section.
4. flat plate heat tube as claimed in claim 1 is characterized in that: the diameter of described drainage post from up to down reduces gradually, and is streamlined setting.
5. flat plate heat tube as claimed in claim 4 is characterized in that: described drainage post middle part offers the groove that runs through from top to bottom.
6. flat plate heat tube as claimed in claim 1 is characterized in that: described drainage post is cylindric, and its opposite end is replaced bottom and top cover respectively.
7. flat plate heat tube as claimed in claim 6 is characterized in that: described drainage post middle part offers the groove that runs through from top to bottom.
8. flat plate heat tube as claimed in claim 1 is characterized in that: be arranged in the capillary structure of described plate inner surface, the thickness of capillary structure that is positioned at the endothermic section is less than the thickness of the capillary structure that is positioned at other positions.
9. flat plate heat tube as claimed in claim 1 is characterized in that: described bottom also has side plate, at the capillary structure of this side plate and the setting of base plate junction the turning of this side plate and base plate is filled and led up.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103058200A CN101995183A (en) | 2009-08-19 | 2009-08-19 | Flat heat pipe |
| US12/632,769 US20110042044A1 (en) | 2009-08-19 | 2009-12-07 | Plate-type heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103058200A CN101995183A (en) | 2009-08-19 | 2009-08-19 | Flat heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101995183A true CN101995183A (en) | 2011-03-30 |
Family
ID=43604357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103058200A Pending CN101995183A (en) | 2009-08-19 | 2009-08-19 | Flat heat pipe |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20110042044A1 (en) |
| CN (1) | CN101995183A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252544A (en) * | 2011-06-10 | 2011-11-23 | 深圳市凯强热传科技有限公司 | Platelike heat pipe and manufacturing method thereof |
| CN102410765A (en) * | 2011-10-28 | 2012-04-11 | 昆山德泰新材料科技有限公司 | Ultra-thin heat pipe with composite structure and manufacturing method thereof |
| CN103217037A (en) * | 2012-01-19 | 2013-07-24 | 奇鋐科技股份有限公司 | Heat pipe structure |
| CN104333324A (en) * | 2014-11-13 | 2015-02-04 | 贵州新能绿色能源有限公司 | Solar photovoltaic photo-thermal integrated energy conversion component |
| CN105578840A (en) * | 2015-07-31 | 2016-05-11 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal |
| CN112802810A (en) * | 2019-11-13 | 2021-05-14 | 华为技术有限公司 | Temperature-uniforming plate and manufacturing method thereof |
| CN113766796A (en) * | 2020-06-01 | 2021-12-07 | 华为技术有限公司 | Temperature equalization plate and electronic equipment |
| CN114554679A (en) * | 2022-03-17 | 2022-05-27 | 西安易朴通讯技术有限公司 | Heat radiator |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120279687A1 (en) * | 2011-05-05 | 2012-11-08 | Celsia Technologies Taiwan, I | Flat-type heat pipe and wick structure thereof |
| WO2018198372A1 (en) * | 2017-04-28 | 2018-11-01 | 株式会社村田製作所 | Vapor chamber |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3519067A (en) * | 1967-12-28 | 1970-07-07 | Honeywell Inc | Variable thermal conductance devices |
| US6082443A (en) * | 1997-02-13 | 2000-07-04 | The Furukawa Electric Co., Ltd. | Cooling device with heat pipe |
| US6871701B2 (en) * | 2001-04-09 | 2005-03-29 | The Furukawa Electric Co., Ltd. | Plate-type heat pipe and method for manufacturing the same |
| TW551612U (en) * | 2002-07-26 | 2003-09-01 | Tai Sol Electronics Co Ltd | Piercing type IC heat dissipating device |
| TW200608179A (en) * | 2004-08-18 | 2006-03-01 | Delta Electronics Inc | Heat dissipation apparatus |
| US20090025910A1 (en) * | 2007-07-27 | 2009-01-29 | Paul Hoffman | Vapor chamber structure with improved wick and method for manufacturing the same |
-
2009
- 2009-08-19 CN CN2009103058200A patent/CN101995183A/en active Pending
- 2009-12-07 US US12/632,769 patent/US20110042044A1/en not_active Abandoned
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252544A (en) * | 2011-06-10 | 2011-11-23 | 深圳市凯强热传科技有限公司 | Platelike heat pipe and manufacturing method thereof |
| CN102410765A (en) * | 2011-10-28 | 2012-04-11 | 昆山德泰新材料科技有限公司 | Ultra-thin heat pipe with composite structure and manufacturing method thereof |
| CN103217037A (en) * | 2012-01-19 | 2013-07-24 | 奇鋐科技股份有限公司 | Heat pipe structure |
| CN104333324A (en) * | 2014-11-13 | 2015-02-04 | 贵州新能绿色能源有限公司 | Solar photovoltaic photo-thermal integrated energy conversion component |
| CN105578840A (en) * | 2015-07-31 | 2016-05-11 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal |
| CN105578840B (en) * | 2015-07-31 | 2018-06-15 | 宇龙计算机通信科技(深圳)有限公司 | A kind of mobile terminal |
| CN112802810A (en) * | 2019-11-13 | 2021-05-14 | 华为技术有限公司 | Temperature-uniforming plate and manufacturing method thereof |
| CN113766796A (en) * | 2020-06-01 | 2021-12-07 | 华为技术有限公司 | Temperature equalization plate and electronic equipment |
| CN113766796B (en) * | 2020-06-01 | 2025-03-04 | 华为技术有限公司 | Vapor Chamber and Electronic Devices |
| CN114554679A (en) * | 2022-03-17 | 2022-05-27 | 西安易朴通讯技术有限公司 | Heat radiator |
| CN114554679B (en) * | 2022-03-17 | 2024-02-09 | 西安易朴通讯技术有限公司 | Heat dissipation device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110042044A1 (en) | 2011-02-24 |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20110330 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |