CN114184069A - Backflow composite flat heat pipe - Google Patents
Backflow composite flat heat pipe Download PDFInfo
- Publication number
- CN114184069A CN114184069A CN202111549682.8A CN202111549682A CN114184069A CN 114184069 A CN114184069 A CN 114184069A CN 202111549682 A CN202111549682 A CN 202111549682A CN 114184069 A CN114184069 A CN 114184069A
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- Prior art keywords
- liquid
- heat pipe
- working medium
- evaporation
- reflux
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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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 89
- 238000001704 evaporation Methods 0.000 claims abstract description 51
- 230000008020 evaporation Effects 0.000 claims abstract description 48
- 238000009833 condensation Methods 0.000 claims abstract description 39
- 230000005494 condensation Effects 0.000 claims abstract description 39
- 238000010992 reflux Methods 0.000 claims abstract description 34
- 238000010521 absorption reaction Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 239000000565 sealant Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 230000003075 superhydrophobic effect Effects 0.000 abstract description 10
- 230000005484 gravity Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XPBBUZJBQWWFFJ-UHFFFAOYSA-N fluorosilane Chemical compound [SiH3]F XPBBUZJBQWWFFJ-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009736 wetting Methods 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 reflux composite flat heat pipe which comprises an evaporation end, a condensation end, a liquid filling pipe and a liquid working medium, wherein the evaporation end is connected with the condensation end; the liquid filling pipe and the condensation end are connected with the evaporation end to form a cavity containing liquid working medium. The capillary reflux column and the side wall liquid absorption core are arranged at the evaporation end; the evaporation end is super-hydrophilic, and the condensation end is super-hydrophobic; the liquid working medium is deionized water. According to the non-wettability of the super-hydrophobic surface and the self-driven bounce phenomenon after the liquid drops are fused: when the working angle of the system is that the condensation end is arranged above, the liquid working medium quickly returns to the evaporation end by virtue of gravity, and capillary reflux does not need to play a role; when the working angle is that the condensation end is at the lower part, part of the condensed working medium returns to the evaporation end in a bouncing reflux mode, and the rest of the condensed working medium returns to the evaporation end in a capillary reflux mode through the capillary reflux column and the wall surface liquid absorption core; and meanwhile, the steam guide structure is arranged to promote the liquid drops to flow back to the center of the evaporation end. The invention combines two reflux modes, expands the reflux space of the flat heat pipe, shortens the reflux path and improves the reflux speed.
Description
Technical Field
The invention relates to the technical field of flat heat pipes, in particular to a backflow composite flat heat pipe.
Background
With the application of the internet of things technology in multiple fields in real life, computing equipment is developing towards the trend of high performance and integration. The high integration of electronic equipment causes the power density of the electronic equipment to rise sharply, the working performance of the electronic equipment is reduced and even the electronic equipment is burnt out along with the rising temperature, and the high heat flow density becomes an important factor for restricting the further development of the electronic equipment.
The flat heat pipe is an efficient heat dissipation device, is attached to a heating device, transfers heat of a concentrated heat source to an external area and disperses the heat to a larger area, and can effectively reduce the temperature of the heat source. The flat heat pipe structure is a cavity filled with working medium and wrapped by a metal shell, and generally comprises an evaporation end, the working medium and a condensation end. The principle of the flat heat pipe is that the evaporation end is connected with a heat source to absorb heat from the heat source, a liquid working medium in the cavity is heated and evaporated to generate steam, the steam is transmitted to the condensation end to transfer heat to the outside and be condensed into liquid again, the liquid working medium is driven by capillary force to flow back to the evaporation end again along the porous structure of the liquid absorption core on the wall surface of the cavity, and the continuous heat transfer is completed in a reciprocating circulation mode. The flat heat pipe has the advantages of low thermal resistance, good temperature uniformity, flat surface and the like, and is widely applied to high-integration electronic equipment such as mobile phones, notebook computers and the like.
The working medium reflux process of the flat heat pipe determines the heat flux density which can be cooled, if the reflux of the condensed working medium is not timely, the situation that the working medium is burnt out can occur at the evaporation end, so that the temperature of a heat source is rapidly increased, and finally, the performance of equipment is reduced and even the equipment is burnt out. The working medium backflow path of the traditional flat heat pipe is a porous structure of a liquid absorption core on the inner wall surface of the cavity, the working medium backflow is driven by single capillary force, and the backflow path of condensed working medium is long and has limited speed; in addition, due to the action of gravity, the working angle of the traditional flat heat pipe has a large influence on the running performance of the traditional flat heat pipe, so that the heat dissipation effect is unstable in practical application, and even the heat dissipation effect is poor under certain conditions.
Disclosure of Invention
The invention aims to provide a backflow composite flat heat pipe which has two backflow modes of capillary force driven backflow and droplet fusion bounce backflow, and acts on the backflow process of a working medium together, so that the backflow space of the flat heat pipe is expanded, the backflow path is shortened, the backflow speed is increased, and finally the total thermal resistance of the flat heat pipe is reduced and the critical heat flow density is increased.
In order to achieve the purpose, the invention adopts the following technical scheme:
a backflow composite flat heat pipe comprises an evaporation end, a condensation end, a liquid filling pipe and a liquid working medium; the evaporation end is connected with the liquid filling pipe, the condensation end is connected with the evaporation end to form a hollow cavity, and the liquid working medium is injected into the hollow cavity through the liquid filling pipe.
And the condensation end is provided with a steam diversion structure.
And a first groove and a second groove are arranged on one side edge of the evaporation end cavity, a first boss and a second boss are arranged on one side edge of the condensation end cavity, the first groove and the first boss form size fit, and the second groove and the second boss form size fit.
And a capillary reflux column, a wall surface liquid absorption core and a bottom surface liquid absorption core are arranged on the inner side of the cavity of the evaporation end.
And the steam guide structures are arranged at the condensation end and are arranged in an array form.
And the liquid working medium is deionized water.
And moreover, sealant is injected into the first groove and the second groove, the injection amount is 1/2 of the depth of the groove, and the first boss and the second boss are pressed into the first groove and the second groove at certain pressure, so that the evaporation end and the condensation end form a sealed cavity.
And, the bottom surface wick is left with trompil and seam, and the trompil forms the cooperation with capillary reflux column, and the seam forms the cooperation with steam water conservancy diversion structure.
And the capillary reflux column, the wall surface liquid absorption core and the bottom surface liquid absorption core are connected with the evaporation cover plate through high-temperature sintering.
And the holes, the slits and the capillary reflux columns are arranged in an array form on the bottom surface liquid absorption core.
Compared with the prior art, the invention has the beneficial effects that:
1) when the working angle of the backflow composite flat plate heat pipe is that the condensation end is arranged upwards, due to the non-wettability of the super-hydrophobic surface in the cavity of the condensation end, the condensed working medium does not form a spreading liquid film but is presented in the form of discrete liquid drops, the condensed liquid drops directly drop to the evaporation end, and the capillary backflow can realize high-speed working medium backflow without exerting the function.
2) When the working angle of the backflow composite flat heat pipe is that the condensation end is at the lower part, the capillary force driving backflow is carried out on the capillary backflow column and the wall surface liquid absorption core, and the condensation working medium can also flow back in a mode of fusion bounce according to the self-driven bounce phenomenon after the liquid drops are fused on the super-hydrophobic surface.
3) The steam flow guide structure can adjust the flow direction of steam generated by the evaporation end, and liquid drops dropping or bouncing on the super-hydrophobic surface are promoted to directly flow back to the central high-temperature area of the evaporation end.
4) Under the synergistic effect of the two backflow modes, the backflow composite flat heat pipe can realize good backflow at any working angle, the influence of gravity on the heat transfer performance is small, the total thermal resistance is reduced, and the critical heat flow density is improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a view showing the structure of an evaporation end of the present invention;
FIG. 3 is a view of the structure of the condensation end of the present invention;
FIG. 4 is a schematic view of a first working principle of the present invention;
FIG. 5 is a schematic diagram illustrating a second operation principle of the present invention;
FIG. 6 is a schematic view of a third operating principle of the present invention;
wherein: the method comprises the following steps of 1-refluxing the composite flat heat pipe, 2-evaporating end, 3-condensing end, 4-evaporating cover plate, 5-condensing cover plate, 6-capillary refluxing column, 7-wall surface liquid absorbing core, 8-bottom surface liquid absorbing core, 9-liquid charging pipe, 10-liquid working medium, 11-first groove, 12-second groove, 13-liquid charging hole, 14-steam flow guide structure, 15-first boss, 16-second boss and 17-micro groove.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and thus the scope of the present invention is clearly and clearly defined.
The invention discloses a reflux composite flat heat pipe 1, the structure of which is shown in figure 1, an evaporation end 2 is shown in figure 2, and a condensation end 3 is shown in figure 3. This embodiment is a hollow cylindrical flat plate. The evaporation cover plate 4, the condensation cover plate 5 and the liquid filling pipe 9 are made of red copper; the capillary reflux column 6, the wall surface liquid absorption core 7 and the bottom surface liquid absorption core 8 are made of foam copper materials, and the liquid working medium 10 is deionized water.
The evaporation end 2, the condensation end 3 and the integral forming method are as follows:
1) and (3) forming the evaporation end 2: the wall surface liquid absorption core 7 is arranged on the wall surface of one side edge of the cavity of the evaporation cover plate 4, the height of the wall surface liquid absorption core 7 is equal to the depth of the cavity, and the square opening of the wall surface liquid absorption core 7 is overlapped with the liquid filling hole 13 to prevent the liquid filling hole 13 from being shielded; the bottom surface liquid absorption core 8 is arranged on the bottom surface of one side of the cavity of the evaporation cover plate 4; the bottom surface liquid absorption core 8 is provided with a certain number of openings and slits; the capillary reflux column 6 is arranged on the bottom surface of one side of the cavity of the evaporation cover plate 4 through the opening of the liquid absorption core 8 on the bottom surface, the opening is matched with the capillary reflux column 6, the opening and the capillary reflux column 6 are surrounded by the slit, and the opening, the slit and the capillary reflux column 6 are all arranged in an array form; the capillary reflux column 6, the wall surface liquid absorption core 7 and the bottom surface liquid absorption core 8 are tightly pressed with the evaporation cover plate 4 by a graphite mould with the size matched with the size of the liquid absorption core at a certain pressure to form an aggregate, the aggregate is put into a vacuumized high-temperature furnace to be sintered for 30 minutes at 970 ℃, and is taken out and then put into an alkaline oxidation solution to be soaked into super-hydrophilicity to form an evaporation end 2;
2) and (3) forming a condensation end: the condensation cover plate 5 is soaked in alkaline oxidation solution to form a nano grass-shaped structure on the surface, and then is soaked in fluorosilane solution to be super-hydrophobic to form a condensation end 3;
3) integrally forming a backflow composite flat heat pipe 1: the liquid charging pipe 9 is mounted to the liquid charging hole 13; the first groove 11 and the second groove 12 are filled with sealant, and the filling height is 1/2 of the depth of the grooves; a first boss 15 and a second boss 16 at the edge of the condensation end 3 are respectively arranged in a first groove 11 and a second groove 12 at the edge of the evaporation end 2, and the first boss 15 is just matched with the first groove 11 in size, and the second boss 16 is just matched with the second groove 12 in size; the steam guide structure 14 is just matched with the slit on the bottom surface liquid absorption core 8; the micro-groove 17 is matched with the liquid charging pipe 9; after the sealant is solidified, the evaporation end 2, the condensation end 3 and the liquid filling pipe 9 form a hollow cavity; the hollow cavity is injected with liquid working medium 10 through a liquid charging pipe 9, then the cavity containing the liquid working medium 10 is vacuumized, after the vacuumization is finished, the liquid charging pipe 9 is cut off by sealing pliers to form a sealing body, and the backflow composite flat plate heat pipe 1 is formed.
The specific reflow process of the reflow compound flat heat pipe 1 is shown in fig. 4, 5 and 6. Fig. 4 shows that the condensation end 3 is on the top, the evaporation end 2 is on the bottom, the central position at the bottom of the evaporation end 2 is attached to a heating device and heated, the liquid working medium in the bottom liquid suction core 8 is heated and evaporated, the working medium becomes steam which is transmitted to the condensation end 3 in the cavity, the heat carried by the steam is dissipated to the outside through the condensation end 3, the super-hydrophobic surface of the condensation end 3 is condensed into the liquid working medium 10, because of the non-wettability of the super-hydrophobic surface, the liquid working medium 10 directly returns to the bottom liquid suction core 8 by virtue of gravity, at the moment, the capillary reflux column 6 and the wall liquid suction core 7 do not play a role. As shown in fig. 5, the working medium heating and evaporating process is the same as that in fig. 4 when the evaporation end 2 is at the upper part and the condensation end 3 is at the lower part, and the difference lies in the working medium reflux process, because the super-hydrophobic surface of the condensation end 3 is non-wetting, the condensed liquid working medium 10 is distributed in a discrete droplet form, after two or more droplets on the super-hydrophobic surface are fused, the self-driven bounce phenomenon is generated, part of the liquid working medium 10 directly returns to the bottom surface liquid absorption core 8 through the bounce reflux mode, and the liquid working medium 10 which is not bounced to the bottom surface liquid absorption core 8 returns to the bottom surface liquid absorption core 8 through the capillary reflux column 6 and the wall surface liquid absorption core 7 through the capillary reflux mode. Fig. 6 shows the operation of the vapor diversion structures 14, because the heating element is attached to the central position of the bottom of the evaporation end 2, the temperature of the center of the evaporation end 2 gradually decreases towards the periphery, the concentration of vapor generated in the cavity also gradually decreases towards the periphery, in the process that the vapor flows towards the periphery, a vapor channel is formed between the adjacent vapor diversion structures 14, the vapor enters the interior of a single vapor diversion structure 14 through the vapor channel, the vapor flow blows moving liquid drops to the central position of the bottom liquid absorption core 8, the process that the vapor flows towards the center from the edge along the bottom liquid absorption core 8 is omitted, and the effect of directly flowing back to the high-temperature area of the evaporation end 2 is achieved.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (10)
1. A backflow combined type flat heat pipe is characterized in that: comprises an evaporation end (2), a condensation end (3), a liquid filling pipe (9) and a liquid working medium (10); the evaporation end (2) is connected with the liquid filling pipe (9), the condensation end (3) is connected with the evaporation end (2) to form a hollow cavity, and the liquid working medium (10) is injected into the hollow cavity through the liquid filling pipe (9).
2. The reflowed composite flat panel heat pipe of claim 1, wherein: the condensation end (3) is provided with a steam diversion structure (14).
3. The reflowed composite flat panel heat pipe of claim 1, wherein: the edge of one side of the cavity of the evaporation end (2) is provided with a first groove (11) and a second groove (12), the edge of one side of the cavity of the condensation end (3) is provided with a first boss (15) and a second boss (16), the first groove (11) and the first boss (15) form size fit, and the second groove (12) and the second boss (16) form size fit.
4. The reflowed composite flat panel heat pipe of claim 1, wherein: and a capillary reflux column (6), a wall surface liquid suction core (7) and a bottom surface liquid suction core (8) are arranged on the inner side of the cavity of the evaporation end (2).
5. The reflowed composite flat plate heat pipe of claim 2, wherein: the steam guide structures (14) are arranged at the condensation end (3) and are arranged in an array form.
6. The reflowed composite flat panel heat pipe of claim 1, wherein: the liquid working medium (10) is deionized water.
7. The reflowed composite flat plate heat pipe of claim 3, wherein: and sealant is injected into the first groove (11) and the second groove (12), the injection amount is 1/2 of the depth of the groove, and the first boss (15) and the second boss (16) are pressed into the first groove (11) and the second groove (12) at a certain pressure, so that the evaporation end (2) and the condensation end (3) form a sealed cavity.
8. The reflowed composite flat plate heat pipe of claim 4, wherein: the bottom surface liquid absorption core (8) is provided with an opening and a slot, the opening is matched with the capillary reflux column (6), and the slot is matched with the steam guide structure (14).
9. The reflowed composite flat plate heat pipe of claim 4, wherein: the capillary reflux column (6), the wall surface liquid absorption core (7) and the bottom surface liquid absorption core (8) are connected with the evaporation cover plate (4) through high-temperature sintering.
10. The reflowed composite flat panel heat pipe of claim 8, wherein: the bottom surface liquid absorption core (8) is provided with holes, slits and the capillary reflux columns (6) which are all arranged in an array form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111549682.8A CN114184069A (en) | 2021-12-17 | 2021-12-17 | Backflow composite flat heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111549682.8A CN114184069A (en) | 2021-12-17 | 2021-12-17 | Backflow composite flat heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114184069A true CN114184069A (en) | 2022-03-15 |
Family
ID=80544300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111549682.8A Pending CN114184069A (en) | 2021-12-17 | 2021-12-17 | Backflow composite flat heat pipe |
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| Country | Link |
|---|---|
| CN (1) | CN114184069A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004020116A (en) * | 2002-06-19 | 2004-01-22 | Mitsubishi Electric Corp | Plate type heat pipe |
| CN109253641A (en) * | 2018-08-30 | 2019-01-22 | 桂林电子科技大学 | A kind of polyimide flex flat-plate heat pipe |
| CN110108139A (en) * | 2019-04-26 | 2019-08-09 | 华南理工大学 | A kind of soaking plate with support column and groove composite construction |
| CN209763828U (en) * | 2018-11-30 | 2019-12-10 | 华南理工大学 | Ultra-thin flat heat pipe of imitative plant leaf structure |
| CN111380389A (en) * | 2020-03-25 | 2020-07-07 | 中国科学院理化技术研究所 | Vapor chamber |
| CN213655492U (en) * | 2020-10-22 | 2021-07-09 | 浙江一番汽车配件科技有限公司 | Oil-resistant bearing protection cover |
-
2021
- 2021-12-17 CN CN202111549682.8A patent/CN114184069A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004020116A (en) * | 2002-06-19 | 2004-01-22 | Mitsubishi Electric Corp | Plate type heat pipe |
| CN109253641A (en) * | 2018-08-30 | 2019-01-22 | 桂林电子科技大学 | A kind of polyimide flex flat-plate heat pipe |
| CN209763828U (en) * | 2018-11-30 | 2019-12-10 | 华南理工大学 | Ultra-thin flat heat pipe of imitative plant leaf structure |
| CN110108139A (en) * | 2019-04-26 | 2019-08-09 | 华南理工大学 | A kind of soaking plate with support column and groove composite construction |
| CN111380389A (en) * | 2020-03-25 | 2020-07-07 | 中国科学院理化技术研究所 | Vapor chamber |
| CN213655492U (en) * | 2020-10-22 | 2021-07-09 | 浙江一番汽车配件科技有限公司 | Oil-resistant bearing protection cover |
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