CN117073427A - Composite gas-liquid coplanar ultrathin flexible flat heat pipe and processing method thereof - Google Patents
Composite gas-liquid coplanar ultrathin flexible flat heat pipe and processing method thereof Download PDFInfo
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- CN117073427A CN117073427A CN202311100532.8A CN202311100532A CN117073427A CN 117073427 A CN117073427 A CN 117073427A CN 202311100532 A CN202311100532 A CN 202311100532A CN 117073427 A CN117073427 A CN 117073427A
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- 239000007788 liquid Substances 0.000 title claims abstract description 105
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 238000003672 processing method Methods 0.000 title claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 78
- 239000010949 copper Substances 0.000 claims abstract description 78
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000006260 foam Substances 0.000 claims abstract description 44
- 238000010521 absorption reaction Methods 0.000 claims abstract description 12
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 238000007731 hot pressing Methods 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 238000007872 degassing Methods 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000005213 imbibition Methods 0.000 claims 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 6
- 238000012546 transfer Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- F28D15/0241—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 tubes being flexible
-
- 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
- F28D15/025—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 having non-capillary condensate return means
-
- 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
- F28D15/0283—Means for filling or sealing heat pipes
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 Electrical Apparatus (AREA)
Abstract
The invention provides a composite gas-liquid coplanar ultrathin flexible flat heat pipe and a processing method thereof, wherein the composite gas-liquid coplanar ultrathin flexible flat heat pipe comprises a liquid absorption core plate and flexible shells which are hot-pressed on the upper side and the lower side, the liquid absorption core plate comprises a foam copper plate and copper nets which are sintered on the upper side and the lower side, a plurality of mutually parallel air passages are formed in the foam copper plate, the air passages are arranged along the length direction of the foam copper plate, a spring is arranged in each air passage, and liquid working media are filled in the liquid absorption core plate. The liquid absorbing core plate in the heat pipe is formed by sintering the foam copper plate and copper nets on the upper side and the lower side of the foam copper plate, the foam copper plate and the copper nets are combined to ensure the flexibility of the heat pipe, the heat pipe can be bent according to the use of flexible electronic equipment, an air passage is formed on the foam copper plate to form a gas-liquid coplanar structure, and a spring is arranged in each air passage, so that the heat pipe can play a supporting role, the heat pipe can be kept smooth under the bending working condition, the flow of gas and liquid cannot be influenced due to the bending of the heat pipe, and the heat pipe can stably run.
Description
Technical Field
The invention relates to the technical field of flexible heat pipe design and processing, in particular to a composite gas-liquid coplanar ultrathin flexible flat heat pipe and a processing method thereof.
Background
With the rapid development of wearable or foldable electronic devices, flexible electronic devices are miniaturized and integrated, so that the problem of increased heat flux density is caused, if heat cannot be rapidly dissipated. The performance and lifetime of the electronic device are easily affected.
The heat pipe as one excellent heat conducting device has the advantages of compact structure, reliable operation, no other power consumption and high effective heat conductivity, and may be used widely in various fields. The general heat pipe is divided into three sections, namely a heating section, an adiabatic section and a condensing section; the liquid suction core and working medium are arranged in the liquid suction core, and the internal environment is generally in a vacuum or negative pressure state. The working heat transfer principle is that the phase change principle is utilized to heat and gasify the working medium of the heating section, pressure difference is generated under the action of temperature difference between the heating section and the condensing section, so that steam flows to the condensing section, and after the condensing section is liquefied, the working medium is sent to the heating section by capillary force of the liquid suction core, thereby realizing circulating heat transfer.
The conventional heat pipe is rigid, cannot be applied to wearable or foldable flexible electronic equipment, and even can be applied to the flexible electronic equipment, and gas-liquid transmission is easy to be blocked due to bending of the flexible electronic equipment in the use process.
Disclosure of Invention
The invention aims to provide a composite gas-liquid coplanar ultrathin flexible flat heat pipe, which solves the problems that the existing heat pipe has no flexibility effect and has poor heat transfer performance after bending.
The invention provides a composite gas-liquid coplanar ultrathin flexible flat heat pipe, which comprises a liquid absorption core plate and flexible shells hot-pressed on the upper side and the lower side, wherein the liquid absorption core plate comprises a foam copper plate and copper nets sintered on the upper side and the lower side, a plurality of mutually parallel air passages are formed in the foam copper plate, the air passages are arranged along the length direction of the foam copper plate, springs are arranged in each air passage, and liquid working media are filled in the liquid absorption core plate.
Further, the flexible shell is an aluminum-plastic composite film, the aluminum-plastic composite film comprises a nylon outer layer, aluminum foils and a polypropylene inner layer, and the liquid absorbing core plate is hot-pressed between the two polypropylene inner layers.
Further, the cross section of the air passage is rectangular or triangular.
Further, the diameter of the spring is not greater than the thickness of the foam copper plate.
Further, the liquid working medium is absolute ethyl alcohol.
A processing method of a composite gas-liquid coplanar ultrathin flexible flat heat pipe comprises the following steps:
s1: cutting a copper net and a foam copper plate, and cutting a plurality of air passages on the foam copper plate;
s2: carrying out hot-pressing sintering treatment on the cut copper mesh and the foam copper plate according to the sequence of the copper mesh, the foam copper plate, the spring and the copper mesh to form a liquid absorption core plate;
s3: the method comprises the steps of hot-pressing aluminum-plastic composite films on the upper side and the lower side of a liquid-absorbing core plate, and respectively arranging a liquid filling pipe and a vacuum pumping pipe on the front side and the rear side of the liquid-absorbing core plate, wherein the ends of the liquid filling pipe and the vacuum pumping pipe are hot-pressed between the two aluminum-plastic composite films;
s4: filling liquid working medium into the liquid absorbing core plate through a liquid filling pipe, and then sealing the liquid filling pipe;
s5: vacuum is performed through the vacuum tube, and then the vacuum tube is closed;
s6: opening the liquid filling pipe, sucking the liquid working medium into the heat pipe under the action of negative pressure, and then closing the liquid filling pipe again;
s7: placing the heat pipe on a heating platform for operation for at least 1 hour, so that non-condensable gas in the working medium is released;
s8: after the operation is finished, performing secondary degassing treatment through a vacuumizing tube;
s9: and after the secondary degassing treatment is finished, removing and sealing the liquid filling pipe orifice and the vacuumizing pipe orifice.
Further, in step S2, the cut copper mesh and the foam copper plate are placed into a graphite mold in the order of copper mesh-foam copper plate-spring-copper mesh, a graphite mold cover is covered and clamped, and the graphite mold cover is placed under hot press equipment for hot press sintering treatment.
Further, the liquid filling pipe and the vacuumizing pipe comprise a needle head and a heat shrinkage pipe, two ends of the inside of the heat shrinkage pipe are sleeved with metal pipes, and one end of the heat shrinkage pipe is fixedly connected with the needle head through the metal pipes.
Furthermore, the liquid filling pipe and the vacuumizing pipe are sealed by clamping the heat shrinkage pipe by adopting a strong water stop clamp.
Further, the metal tube is a copper tube.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects: the liquid absorbing core plate in the heat pipe is formed by sintering the foam copper plate and copper nets on the upper side and the lower side of the foam copper plate, the foam copper plate and the copper nets are combined to ensure the flexibility of the heat pipe, the heat pipe can be bent according to the use of flexible electronic equipment, an air passage is formed on the foam copper plate to form a gas-liquid coplanar structure, and a spring is arranged in each air passage, so that the heat pipe can play a supporting role, the heat pipe can be kept smooth under the bending working condition, the flow of gas and liquid cannot be influenced due to the bending of the heat pipe, and the heat pipe can stably run.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of the overall structure of a heat pipe in accordance with the present invention;
fig. 2 is an exploded view of a wicking panel in accordance with the present invention;
fig. 3 is a cross-sectional view of a absorbent core in accordance with the present invention;
FIG. 4 is an exploded view of the structure of the liquid filling pipe and the vacuumizing pipe in the invention;
FIG. 5 is a schematic view of the overall structure of the liquid charging tube and the vacuum pumping tube in the present invention;
reference numerals illustrate: 1-liquid filling pipe, 2-vacuumizing pipe, 3-flexible shell, 4-copper net, 5-spring, 6-foam copper plate, 11-needle, 12-copper pipe and 13-heat shrinking pipe.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1-5, a composite gas-liquid coplanar ultrathin flexible flat heat pipe comprises a liquid absorption core plate and flexible shells 3 hot-pressed on the upper side and the lower side, wherein the liquid absorption core plate comprises a foam copper plate 6 and copper nets 4 sintered on the upper side and the lower side, a plurality of mutually parallel air passages are formed in the foam copper plate 6, the cross section of each air passage is rectangular or triangular, the air passages are arranged along the length direction of the foam copper plate 6, springs 5 are arranged in each air passage, the diameter of each spring 5 is not greater than the thickness of the foam copper plate 6, liquid working media are filled in the liquid absorption core plate, and the liquid working media adopted in the embodiment are absolute ethyl alcohol.
In this embodiment, the flexible housing 3 is an aluminum-plastic composite film, the aluminum-plastic composite film comprises a nylon outer layer, an aluminum foil and a polypropylene inner layer, the liquid absorbing core plate is hot-pressed between the two polypropylene inner layers, and the two polypropylene inner layers are melted and bonded together to achieve the sealing effect during hot pressing.
The processing method of the composite gas-liquid coplanar ultrathin flexible flat heat pipe specifically comprises the following steps:
firstly, the copper net 4 and the foam copper plate 6 with the same size are respectively cut by laser cutting equipment, and the positions of air outlet channels are cut on the foam copper plate 6. Then placing the cut copper net 4 and the copper foam plate 6 into a graphite mold according to the sequence of the copper net 4-copper foam plate 6-spring 5-copper net 4, placing the spring 5 into an air passage cut by the copper foam plate 6, covering a mold cover, pressing and sending the copper foam plate 6 and the copper foam plate to a heating furnace for hot pressing and sintering, and adhering the copper foam plate 6 and the copper net 4 to form the composite gas-liquid coplanar liquid absorption core plate.
Manufacturing a liquid filling pipe 1 and a vacuumizing pipe 2: firstly cutting two small sections of copper pipes 12, then inserting one section of copper pipe 12 into a needle head 11, sleeving a heat shrinkage pipe 13, sleeving the other end of the heat shrinkage pipe 13 with the other section of copper pipe 12, and performing heat shrinkage molding on the heat shrinkage pipe 13 by using a heat gun to manufacture a liquid filling pipe 1 and a vacuum pumping pipe 2. The thin needle 11 can ensure that the flexible housing 3 has good heat pressing air tightness. The liquid filling pipe 1 and the vacuumizing pipe 2 are independently used for filling liquid and vacuumizing, so that the loss of working medium in secondary degassing can be reduced
Placing the hot-pressed composite gas-liquid coplanar type liquid absorbing core plate into an aluminum plastic film flexible shell 3, respectively inserting the two ends of the composite gas-liquid coplanar type liquid absorbing core plate into a manufactured liquid filling pipe 1 and a manufactured vacuum pumping pipe 2, and then placing the composite gas-liquid coplanar type liquid absorbing core plate on a hot press for hot pressing; in the process, the liquid absorbing core plate and the flexible shell 3 are hot-pressed firstly, and then the flexible shell 3, the vacuumizing tube 2 and the liquid filling tube 1 are hot-pressed.
The liquid filling pipe 1 is connected to the liquid filling pipe, a certain amount of liquid working medium is injected, the gas in the liquid filling pipe 1 is discharged, the liquid working medium in the liquid filling pipe 1 is ensured to be all the liquid working medium, and then the liquid filling pipe 1 is clamped by a strong water stop clamp. The vacuumizing tube 2 is connected to vacuumizing equipment, vacuumizing is carried out for one time, and after vacuumizing is finished, the vacuumizing tube 2 is clamped by a strong water stop clamp.
Then the strong water stop clamp of the liquid filling pipe 1 is opened, so that the working medium in the liquid filling pipe is automatically sucked into the heat pipe, the suction quantity of the working medium is controlled, and then the strong water stop clamp is used for clamping the liquid filling pipe 1.
After the working medium is sucked, the heat pipe is placed on a heating platform to perform operation for at least one hour, so that non-condensable gas in the working medium is released.
After the operation is finished, the vacuumizing tube 2 of the heat pipe is connected into vacuumizing equipment, a powerful water stop clamp of the vacuumizing tube 2 is opened, and secondary degassing treatment is carried out on the vacuumizing tube 2.
And after the secondary degassing treatment is finished, removing and sealing the 1 port of the liquid filling pipe and the 2 port of the vacuumizing pipe.
And finally, carrying out heat transfer test on the heat pipe to ensure normal operation.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The utility model provides a compound gas-liquid coplanar ultra-thin flexible flat heat pipe, its characterized in that includes imbibition core and hot pressing flexible shell of upper and lower both sides, imbibition core includes foam copper and sintering copper mesh of upper and lower both sides, a plurality of mutual parallel air flue have been seted up on the foam copper, the air flue is followed the length direction of foam copper sets up, every all install the spring in the air flue, imbibition core is inside to be filled with liquid working medium.
2. The composite gas-liquid coplanar ultrathin flexible flat heat pipe according to claim 1, wherein the flexible housing is an aluminum-plastic composite film, the aluminum-plastic composite film comprises a nylon outer layer, an aluminum foil and a polypropylene inner layer, and the liquid absorbing core plate is hot-pressed between the two polypropylene inner layers.
3. The composite gas-liquid coplanar ultrathin flexible flat heat pipe according to claim 1, wherein the cross section of the air passage is rectangular or triangular.
4. The composite gas-liquid coplanar ultrathin flexible flat plate heat pipe according to claim 1, wherein the diameter of the spring is not greater than the thickness of the foam copper plate.
5. The composite gas-liquid coplanar ultrathin flexible flat heat pipe according to claim 1, wherein the liquid working medium is absolute ethyl alcohol.
6. The processing method of the composite gas-liquid coplanar ultrathin flexible flat heat pipe is characterized by comprising the following steps of:
s1: cutting a copper net and a foam copper plate, and cutting a plurality of air passages on the foam copper plate;
s2: carrying out hot-pressing sintering treatment on the cut copper mesh and the foam copper plate according to the sequence of the copper mesh, the foam copper plate, the spring and the copper mesh to form a liquid absorption core plate;
s3: the method comprises the steps of hot-pressing aluminum-plastic composite films on the upper side and the lower side of a liquid-absorbing core plate, and respectively arranging a liquid filling pipe and a vacuum pumping pipe on the front side and the rear side of the liquid-absorbing core plate, wherein the ends of the liquid filling pipe and the vacuum pumping pipe are hot-pressed between the two aluminum-plastic composite films;
s4: filling liquid working medium into the liquid absorbing core plate through a liquid filling pipe, and then sealing the liquid filling pipe;
s5: vacuum is performed through the vacuum tube, and then the vacuum tube is closed;
s6: opening the liquid filling pipe, sucking the liquid working medium into the heat pipe under the action of negative pressure, and then closing the liquid filling pipe again;
s7: placing the heat pipe on a heating platform for operation for at least 1 hour, so that non-condensable gas in the working medium is released;
s8: after the operation is finished, performing secondary degassing treatment through a vacuumizing tube;
s9: and after the secondary degassing treatment is finished, removing and sealing the liquid filling pipe orifice and the vacuumizing pipe orifice.
7. The method for processing the composite gas-liquid coplanar ultrathin flexible flat heat pipe according to claim 6, wherein in the step S2, the cut copper mesh and the foam copper plate are placed into a graphite mold in the order of the copper mesh-foam copper plate-spring-copper mesh, a graphite mold cover is covered and clamped, and the graphite mold cover is placed into hot pressing equipment for hot pressing sintering treatment.
8. The method for processing the composite gas-liquid coplanar ultrathin flexible flat heat pipe according to claim 6, wherein the liquid filling pipe and the vacuum pipe comprise a needle head and a heat shrinkage pipe, two ends inside the heat shrinkage pipe are sleeved with metal pipes, and one end of the heat shrinkage pipe is fixedly connected with the needle head through the metal pipes.
9. The method for processing the composite gas-liquid coplanar ultrathin flexible flat heat pipe according to claim 8, wherein the liquid filling pipe and the vacuumizing pipe are sealed by clamping a heat shrinking pipe by a strong water stopping clamp.
10. The method for processing the composite gas-liquid coplanar ultrathin flexible flat heat pipe according to claim 8, wherein the metal pipe is a copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311100532.8A CN117073427A (en) | 2023-08-28 | 2023-08-28 | Composite gas-liquid coplanar ultrathin flexible flat heat pipe and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311100532.8A CN117073427A (en) | 2023-08-28 | 2023-08-28 | Composite gas-liquid coplanar ultrathin flexible flat heat pipe and processing method thereof |
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| CN117073427A true CN117073427A (en) | 2023-11-17 |
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2023
- 2023-08-28 CN CN202311100532.8A patent/CN117073427A/en active Pending
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| US20200191497A1 (en) * | 2018-10-24 | 2020-06-18 | Roccor, Llc | Deployable Radiator Devices, Systems, and Methods Utilizing Composite Laminates |
| US20210071963A1 (en) * | 2019-08-21 | 2021-03-11 | Roccor, Llc | Bendable Flat Heat Pipe Devices, Systems, and Methods |
| CN111465293A (en) * | 2020-05-16 | 2020-07-28 | 梧州三和新材料科技有限公司 | Ultrathin soaking plate and manufacturing method thereof |
| CN116026175A (en) * | 2023-01-17 | 2023-04-28 | 南京航空航天大学 | Bionic ultrathin flexible flat heat pipe |
| CN116625149A (en) * | 2023-06-16 | 2023-08-22 | 广州大学 | Composite liquid suction core unidirectional heat pipe and processing method thereof |
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