CN116625149A - Composite liquid suction core unidirectional heat pipe and processing method thereof - Google Patents
Composite liquid suction core unidirectional heat pipe and processing method thereof Download PDFInfo
- Publication number
- CN116625149A CN116625149A CN202310725449.3A CN202310725449A CN116625149A CN 116625149 A CN116625149 A CN 116625149A CN 202310725449 A CN202310725449 A CN 202310725449A CN 116625149 A CN116625149 A CN 116625149A
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- liquid injection
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- suction core
- pipe
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- 239000007788 liquid Substances 0.000 title claims abstract description 179
- 239000002131 composite material Substances 0.000 title claims abstract description 69
- 238000003672 processing method Methods 0.000 title abstract description 9
- 238000002347 injection Methods 0.000 claims abstract description 72
- 239000007924 injection Substances 0.000 claims abstract description 72
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229910052802 copper Inorganic materials 0.000 claims abstract description 59
- 239000010949 copper Substances 0.000 claims abstract description 59
- 238000001704 evaporation Methods 0.000 claims abstract description 32
- 230000008020 evaporation Effects 0.000 claims abstract description 29
- 238000009833 condensation Methods 0.000 claims abstract description 26
- 230000005494 condensation Effects 0.000 claims abstract description 26
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 17
- 238000012546 transfer Methods 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 238000013329 compounding Methods 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 18
- 238000007731 hot pressing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000004020 conductor Substances 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
- 239000003292 glue Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 239000002985 plastic film Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000000463 material Substances 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F28D15/0266—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 separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention provides a composite liquid suction core unidirectional heat pipe and a processing method thereof, and belongs to the technical field of heat pipes. The heat pipe includes: the liquid suction device comprises a flexible shell, a composite liquid suction core and a liquid injection pipe, wherein the composite liquid suction core is arranged in the flexible shell, the liquid injection pipe is arranged at one end of the flexible shell, the composite liquid suction core is formed by compounding a welded copper mesh and a woven copper mesh, one end, close to the liquid injection pipe, of the composite liquid suction core is an evaporation section, the other end of the composite liquid suction core is a condensation section, hydrophilic treatment is carried out on the evaporation section, and hydrophobic treatment is carried out on the condensation section. The processing method comprises the following steps: s1, cutting and processing each part; s2, sintering the braided copper mesh and the welded copper mesh into a composite liquid suction core; s3, carrying out overall hydrophilic treatment on the composite liquid suction core; s4, carrying out hydrophobic treatment on one end of the composite liquid suction core; s5, placing the composite liquid suction core in a flexible shell, and sealing three surfaces; s6, sealing the liquid injection pipe; s7, vacuumizing, injecting liquid working medium, and stamping and sealing the liquid injection pipe; s8, heat transfer testing. The heat pipe can realize unidirectional heat conduction and is not influenced by the temperature of the external environment or gravity.
Description
Technical Field
The invention relates to the technical field of heat pipes, in particular to a composite liquid suction core unidirectional heat pipe and a processing method thereof.
Background
A heat pipe is a heat transfer element having high heat dissipation performance, and has been widely used in the field of heat dissipation of electronic products. The existing heat pipe generally conducts heat in two directions according to the temperature difference direction, namely, the heat is transferred from high temperature to low temperature. When the electronic product is in an environment with the external environment higher than the temperature of the electronic device, heat is transferred from the outside to the inside of the electronic device, so that the temperature of the electronic device rises sharply, and the device is damaged.
The traditional heat pipe cannot have high heat transfer limit and antigravity heat transfer effect at the same time, and the heat dissipation field of the electronic product is characterized by changeable use angle and high heat flux density, so that the traditional heat pipe cannot meet the heat dissipation requirement of the electronic product.
In view of the above, the invention provides a composite wick unidirectional heat pipe and a processing method thereof, wherein liquid working medium can only flow from a condensation section to an evaporation section in the heat pipe, so that unidirectional heat conductivity is realized.
Disclosure of Invention
The invention aims to provide a composite liquid suction core unidirectional heat pipe and a processing method thereof, and the heat pipe can enable liquid working medium to flow from an evaporable end to a condensing section only, thereby realizing unidirectional heat conductivity and being not influenced by external environment temperature or gravity.
In one aspect, the present invention provides a composite wick unidirectional heat pipe comprising: the liquid suction device comprises a flexible shell, a composite liquid suction core and a liquid injection pipe, wherein a cavity is formed in the flexible shell, the composite liquid suction core is arranged in the cavity, the liquid injection pipe is installed at one end of the flexible shell and is communicated with the cavity inside the flexible shell, the composite liquid suction core is formed by compounding a welded copper mesh and a woven copper mesh, one end, close to the liquid suction core, of the composite liquid suction core is an evaporation section, one end, far away from the liquid injection pipe is a condensation section, the evaporation section is a hydrophilic end subjected to hydrophilic treatment, and the condensation section is a hydrophobic end subjected to hydrophobic treatment.
Preferably, the flexible housing is provided with a liquid injection hole, the liquid injection pipe is matched with the liquid injection hole, the liquid injection hole is communicated with a cavity inside the flexible housing, and liquid working medium is introduced into the flexible housing through the liquid injection pipe.
Preferably, the liquid injection pipe is sealed in the liquid injection hole by high-temperature resistant glue or direct welding and fixing.
Preferably, the liquid working medium is deionized water.
Preferably, the mesh density of the welded copper mesh is 300-500 mesh.
Preferably, the welding copper net and the woven copper net are in compound connection in a sintering mode.
Preferably, the flexible housing is made of a flexible metal heat conductive material.
Preferably, the flexible metal heat conducting material is copper or an aluminum plastic film.
On the other hand, the invention also provides a processing method of the composite wick unidirectional heat pipe, which comprises the following steps:
s1, cutting a flexible shell, a woven copper mesh and a welded copper mesh with proper sizes;
s2, arranging the braided copper mesh on a welding copper mesh, and then placing the welding copper mesh in a sintering furnace to sinter the welding copper mesh into a composite liquid suction core;
s3, carrying out hydrophilic treatment on the whole sintered composite liquid suction core;
s4, carrying out hydrophobic treatment on one end of the composite liquid suction core after hydrophilic treatment to serve as a condensation section;
s5, placing the composite liquid suction core on the flexible shell, sealing each side of the flexible shell in a hot-pressing or welding mode, and leaving one end of the flexible shell unsealed;
s6, connecting the liquid injection pipe to one unsealed end, and performing hot pressing or welding again to enable the liquid injection pipe to be connected with the flexible shell in a sealing mode;
s7, connecting a liquid injection pipe with a vacuum device to vacuumize the interior of the heat pipe, rapidly injecting liquid working medium into the interior of the heat pipe through the liquid injection pipe after vacuumization is finished, and stamping the pipe orifice of the liquid injection pipe to enable the pipe orifice to deform and seal after liquid injection is finished;
s8, performing heat transfer test on the heat pipe to ensure more normal use.
Preferably, the step S6 further includes inserting the liquid injection pipe into a liquid injection hole formed in the flexible housing, and using a high temperature resistant adhesive to mix the outer wall of the liquid injection pipe with the liquid injection Kong Jiaojie.
According to the technical scheme, one end of the composite liquid suction core is subjected to hydrophobic treatment, the other end of the composite liquid suction core is subjected to hydrophilic treatment, the hydrophobic treatment end is a condensation section, the hydrophilic treatment end is an evaporation section, the evaporation section is contacted with a heat source, the liquid working medium is evaporated into a gaseous working medium after absorbing heat, the composite liquid suction core is used for compositing a welded copper net and a woven copper net, wherein the woven copper net is used as a retainer, a flexible shell is supported up, a gas channel for flowing the gaseous working medium is formed between the welded copper net and the woven copper net, the composite liquid suction core is used as a liquid channel, meshes of the welded copper net are used as low-flow-resistance liquid channels, the liquid working medium can flow to the evaporation section under normal conditions, when the heat pipe is in an external high-temperature environment or under the anti-gravity condition, the condensation section flows to the evaporation section through the hydrophilic treatment, the unidirectional flow of the liquid working medium can still flow from the condensation section to the evaporation section under the capillary action of the woven copper net, the unidirectional flow of the liquid working medium can be realized, the evaporation section can be normally subjected to endothermic evaporation, the forward effective heat conductivity of the heat pipe can be guaranteed, the reverse blocking performance of the heat pipe can be guaranteed, the unidirectional transfer of the heat can be guaranteed, and the heat radiation capability under the extreme environment and the anti-gravity condition can be improved.
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 a schematic view of the overall structure of a heat pipe according to the present invention;
FIG. 2 is a schematic view of the internal structure of the heat pipe of the present invention after explosion;
FIG. 3 is a schematic illustration of a specific structure of a composite wick according to the present invention;
FIG. 4 is a front view showing the overall structure of the heat pipe of the present invention;
fig. 5 is a cross-sectional view of fig. 4 taken along line B-B in accordance with the present invention.
Reference numerals illustrate:
10: a flexible housing; 20: a liquid injection pipe; 30: braiding a copper net; 40: welding a copper net; 50: a liquid injection hole; 61: a first fluid path; 62: a second fluid path; 70: a gas channel.
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.
As shown in fig. 1-5, the present invention provides a composite wick unidirectional heat pipe comprising: the flexible shell 10, the composite liquid suction core and the liquid injection pipe 20, the cavity is arranged in the flexible shell 10, the composite liquid suction core is arranged in the cavity, the liquid injection pipe 20 is arranged at one end of the flexible shell 10 and is communicated with the cavity inside the cavity, the liquid suction core is formed by compounding a welded copper net 40 and a woven copper net 30, one end of the composite liquid suction core, which is close to the liquid injection pipe 20, is an evaporation section, one end of the composite liquid suction core, which is far away from the liquid injection pipe 20, is a condensation section, the evaporation section is a hydrophilic end which is subjected to hydrophilic treatment, the evaporation section is contacted with a heat source (such as a computer CPU), the liquid working medium evaporates into a gaseous working medium after absorbing heat in a working environment, the woven copper net 30 of the composite liquid suction core is used as a retainer to prop up the flexible shell 10, a gas channel 70 is formed between the two, the gaseous working medium formed by evaporation flows to the condensation section through the gas channel 70, the condensation section is a hydrophobic end subjected to hydrophobic treatment, the condensation section is in contact with a cold source (such as a water cooling system), the gaseous working medium is cooled to release heat after entering the condensation section through the gas channel, condensed into a liquid working medium, and then enters the composite liquid absorption core again, the woven copper net 30 in the composite liquid absorption core is of a porous medium structure, and has capillary action, the condensed liquid working medium can flow back to the evaporation section under the capillary action, and thus the circulation is realized, thereby realizing the heat dissipation effect on the heating element.
Specifically, the flexible housing 10 is made of a flexible metal heat-conducting material, and the flexible metal heat-conducting material is copper or an aluminum plastic film, in this embodiment, a copper sheet with good heat-conducting property can be selected, the copper sheet is sealed by hot pressing or welding, the liquid working medium is deionized water, the deionized water has the characteristic of high latent heat, so that the heat pipe has good heat-conducting effect, and the deionized water has high compatibility with copper, so that the heat pipe has good service life. In addition, the flexible housing 10 can also be made of polymer films such as aluminum plastic films, and the like, has the characteristic of simple sealing process, and can greatly reduce the sealing difficulty. The liquid injection hole 50 has been seted up to the one end of flexible shell 10, and liquid injection pipe 20 and liquid injection hole 50 cooperation installation, and liquid injection pipe 20 pass through high temperature resistant glue or direct welded fastening's mode and liquid injection hole 50 sealing connection cooperation, and liquid injection hole 50 is linked together with the cavity of flexible shell 10 inside, lets in deionized water through liquid injection pipe 20 to flexible shell 10 inside.
Because a single wick cannot meet both Gao Maoxi force and high liquid permeability, it is difficult to achieve high heat transfer limits and antigravity heat transfer effects. Specifically, the composite wick is formed by combining the braided copper mesh 30 and the welded copper mesh 40 by a sintering process, wherein the mesh density of the welded copper mesh 40 is 300 mesh to 500 mesh, and in this embodiment, the mesh density of the welded copper mesh 40 is 350 mesh. Wherein, the mesh of the welding copper net 40 provides a first liquid channel 61 with low flow resistance for the liquid working medium, and the porous medium structure of the woven copper net 30 is a second liquid channel 62 for providing Gao Maoxi force for the liquid working medium. One end of the composite liquid suction core is subjected to hydrophilic treatment, and the other end is subjected to hydrophobic treatment, wherein the hydrophilic end has strong liquid suction state working medium capacity, and the hydrophilic end serves as an evaporation section, which is equivalent to further opening up the flowing capacity of liquid working medium in the woven copper mesh 30 and the welded copper mesh 40, so that the liquid working medium can be timely supplemented after being heated and evaporated, and the efficient implementation of heat transfer circulation is ensured; the hydrophobic end does not have the capacity of absorbing liquid state working medium, and as the condensation section, the flow of liquid state working medium is blocked, prevents liquid state working medium from entering the condensation section, and when the condensation section is heated, liquid state working medium can not be timely replenished after evaporation for working medium circulation stops, reverse heat transfer can not be carried out, and the effect of protecting electronic products can be played. Under normal gravity conditions, the liquid working medium condensed in the condensation section can flow back to the evaporation section from the first liquid channel 61 under the action of gravity, and under anti-gravity conditions, the condensation section of the composite liquid absorption core is a hydrophobic end, the evaporation section is a hydrophilic end, and the liquid working medium can flow back to the evaporation section from the second liquid channel 62 under the capillary action of the woven copper mesh 30 for effective heat dissipation, so that the heat pipe has the characteristics of high heat transfer limit and anti-gravity heat transfer.
In this embodiment, the liquid injection pipe 20 contacts with the hydrophilic end of the composite liquid suction core, so that the composite liquid suction core is beneficial to timely sucking the liquid working medium to the hydrophilic part of the whole composite liquid suction core when liquid injection is performed, before the liquid working medium is injected into the composite liquid suction core, the liquid injection pipe 20 is connected with a vacuum device to perform vacuumizing treatment on the interior of the heat pipe, and after vacuumizing is finished, the liquid working medium is rapidly injected into the interior of the heat pipe through the liquid injection pipe 20. The vacuumizing treatment aims to reduce the internal pressure of the heat pipe, reduce the boiling point of the liquid working medium, and evaporate the liquid working medium into steam more easily, so that the heat pipe can work normally at a lower temperature.
The working principle of the unidirectional heat pipe forward heat transfer of the invention is as follows: the heat pipe has one end with liquid injection pipe 20 as evaporating section, and the other end as condensing section, and the condensing section is contacted with heat dissipating element, and the middle section is heat insulating section, which has no temperature change in theory. The evaporation section is hydrophilic end, and the condensing zone is hydrophobic end, and in normal operating, the temperature of evaporation section is higher than the temperature of condensing zone, and the liquid working medium in the evaporation section is heated the phase transition and becomes steam, and steam flows to the condensing zone through the air flue, because the temperature of condensing zone is lower relatively, the steam meets cold phase transition liquefaction. The composite liquid absorption core is of a porous medium structure, liquid in the evaporation section is reduced, liquid in the condensation section is increased, the woven copper mesh 30 has capillary pressure, the liquid in the condensation section is transported to the evaporation section, and then the liquid is heated again to change into vapor to flow to the condensation section, so that the liquid is circulated and reciprocated. In the process of evaporating and absorbing heat of liquid working medium and condensing and releasing heat of steam, heat flow of the evaporating section is transmitted to the condensing section, so that the heat transfer effect is achieved.
The invention also provides a processing method of the composite wick unidirectional heat pipe, which comprises the following steps:
s1, cutting a flexible shell 10, a woven copper mesh 30 and a welded copper mesh 40 with proper sizes;
s2, arranging the woven copper mesh 30 on the welded copper mesh 40, and sintering in a sintering furnace to form a composite liquid suction core;
s3, carrying out hydrophilic treatment on the whole sintered composite liquid suction core;
s4, carrying out hydrophobic treatment on one end of the composite liquid suction core after hydrophilic treatment to serve as a condensation section;
s5, placing the composite liquid suction core on the flexible shell 10, sealing each side of the flexible shell 10 in a hot-pressing or welding mode, and leaving one end of the composite liquid suction core unsealed;
s6, connecting the liquid injection pipe 20 into a liquid injection hole 50 formed in the unsealed end of the flexible shell 10, bonding the outer wall of the liquid injection pipe 20 with the liquid injection hole 50 by using high-temperature resistant glue, and performing hot pressing or welding again to enable the liquid injection pipe 20 to be in sealing connection with the flexible shell 10;
s7, connecting the liquid injection pipe 20 with a vacuum device to vacuumize the interior of the heat pipe, rapidly injecting liquid working medium into the interior of the heat pipe through the liquid injection pipe 20 after vacuumization is finished, and stamping the pipe orifice of the liquid injection pipe 20 to enable the pipe orifice to deform and seal after liquid injection is finished;
s8, performing heat transfer test on the heat pipe to ensure more normal use.
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. A composite wick unidirectional heat pipe, comprising: the liquid suction device comprises a flexible shell, a composite liquid suction core and a liquid injection pipe, wherein a cavity is formed in the flexible shell, the composite liquid suction core is arranged in the cavity, the liquid injection pipe is installed at one end of the flexible shell and is communicated with the cavity inside the flexible shell, the composite liquid suction core is formed by compounding a welded copper mesh and a woven copper mesh, one end, close to the liquid suction core, of the composite liquid suction core is an evaporation section, one end, far away from the liquid injection pipe is a condensation section, the evaporation section is a hydrophilic end subjected to hydrophilic treatment, and the condensation section is a hydrophobic end subjected to hydrophobic treatment.
2. The unidirectional heat pipe with the composite wick according to claim 1, wherein the flexible housing is provided with a liquid injection hole, the liquid injection pipe is installed in cooperation with the liquid injection hole, the liquid injection hole is communicated with a cavity inside the flexible housing, and liquid working medium is introduced into the flexible housing through the liquid injection pipe.
3. The unidirectional heat pipe of claim 2, wherein the liquid injection pipe is sealed in the liquid injection hole by high temperature resistant glue or by direct welding.
4. The composite wick unidirectional heat pipe of claim 2, wherein the liquid working medium is deionized water.
5. The composite wick unidirectional heat pipe of claim 1, wherein the welded copper mesh has a mesh density of 300 mesh to 500 mesh.
6. The composite wick unidirectional heat pipe of claim 1, wherein the welded copper mesh and the woven copper mesh are compositely connected by sintering.
7. The composite wick unidirectional heat pipe of claim 1, wherein the flexible housing is made of a flexible metal heat conductive material.
8. The composite wick unidirectional heat pipe of claim 7, wherein the flexible metal heat transfer material is copper or an aluminum plastic film.
9. A method of manufacturing a composite wick unidirectional heat pipe as claimed in any one of claims 1 to 8, comprising the steps of:
s1, cutting a flexible shell, a woven copper mesh and a welded copper mesh with proper sizes;
s2, arranging the braided copper mesh on a welding copper mesh, and then placing the welding copper mesh in a sintering furnace to sinter the welding copper mesh into a composite liquid suction core;
s3, carrying out hydrophilic treatment on the whole sintered composite liquid suction core;
s4, carrying out hydrophobic treatment on one end of the composite liquid suction core after hydrophilic treatment to serve as a condensation section;
s5, placing the composite liquid suction core on the flexible shell, sealing each side of the flexible shell in a hot-pressing or welding mode, and leaving one end of the flexible shell unsealed;
s6, connecting the liquid injection pipe to one unsealed end, and performing hot pressing or welding again to enable the liquid injection pipe to be connected with the flexible shell in a sealing mode;
s7, connecting a liquid injection pipe with a vacuum device to vacuumize the interior of the heat pipe, rapidly injecting liquid working medium into the interior of the heat pipe through the liquid injection pipe after vacuumization is finished, and stamping the pipe orifice of the liquid injection pipe to enable the pipe orifice to deform and seal after liquid injection is finished;
s8, performing heat transfer test on the heat pipe to ensure more normal use.
10. The method for manufacturing a unidirectional heat pipe with a composite wick according to claim 9, wherein the step S6 further comprises inserting the liquid injection pipe into a liquid injection hole formed in the flexible housing, and using a high temperature resistant adhesive to mix the outer wall of the liquid injection pipe with the liquid injection Kong Jiaojie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310725449.3A CN116625149B (en) | 2023-06-16 | 2023-06-16 | Composite liquid suction core unidirectional heat pipe and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310725449.3A CN116625149B (en) | 2023-06-16 | 2023-06-16 | Composite liquid suction core unidirectional heat pipe and processing method thereof |
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| Publication Number | Publication Date |
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| CN116625149A true CN116625149A (en) | 2023-08-22 |
| CN116625149B CN116625149B (en) | 2024-06-14 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354220A (en) * | 2008-08-13 | 2009-01-28 | 杨洪武 | Imbibition chip, imbibition core and plate type integrated hot pipe |
| CN104764349A (en) * | 2015-04-17 | 2015-07-08 | 广东新创意科技有限公司 | Composite type liquid suction core ultra-thin heat pipe and manufacturing method thereof |
| CN106288902A (en) * | 2016-10-12 | 2017-01-04 | 苏州天脉导热科技有限公司 | Weave the preparation method of class capillary wick and use the heat pipe of this wick |
| 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 |
| JP6466541B2 (en) * | 2017-07-12 | 2019-02-06 | エイジア ヴァイタル コンポーネンツ カンパニー リミテッド | Manufacturing method of heat dissipation unit |
| CN111590282A (en) * | 2020-05-19 | 2020-08-28 | 广州大学 | Double-channel unidirectional heat transfer heat pipe and processing method thereof |
| CN212573389U (en) * | 2020-07-31 | 2021-02-19 | 华南理工大学 | Ultrathin phase change heat transfer device with gas-liquid coplanar characteristic |
| CN113606972A (en) * | 2021-06-22 | 2021-11-05 | 哈尔滨工业大学（深圳） | Flexible ultrathin soaking plate and preparation method thereof |
| CN113834358A (en) * | 2021-09-23 | 2021-12-24 | 华南理工大学 | Fiber type flexible flat heat pipe and preparation method thereof |
| CN114894016A (en) * | 2022-04-29 | 2022-08-12 | 广州大学 | Metal wire array liquid absorption core one-way heat pipe and manufacturing method thereof |
-
2023
- 2023-06-16 CN CN202310725449.3A patent/CN116625149B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354220A (en) * | 2008-08-13 | 2009-01-28 | 杨洪武 | Imbibition chip, imbibition core and plate type integrated hot pipe |
| CN104764349A (en) * | 2015-04-17 | 2015-07-08 | 广东新创意科技有限公司 | Composite type liquid suction core ultra-thin heat pipe and manufacturing method thereof |
| CN106288902A (en) * | 2016-10-12 | 2017-01-04 | 苏州天脉导热科技有限公司 | Weave the preparation method of class capillary wick and use the heat pipe of this wick |
| JP6466541B2 (en) * | 2017-07-12 | 2019-02-06 | エイジア ヴァイタル コンポーネンツ カンパニー リミテッド | Manufacturing method of heat dissipation unit |
| 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 |
| CN111590282A (en) * | 2020-05-19 | 2020-08-28 | 广州大学 | Double-channel unidirectional heat transfer heat pipe and processing method thereof |
| CN212573389U (en) * | 2020-07-31 | 2021-02-19 | 华南理工大学 | Ultrathin phase change heat transfer device with gas-liquid coplanar characteristic |
| CN113606972A (en) * | 2021-06-22 | 2021-11-05 | 哈尔滨工业大学（深圳） | Flexible ultrathin soaking plate and preparation method thereof |
| CN113834358A (en) * | 2021-09-23 | 2021-12-24 | 华南理工大学 | Fiber type flexible flat heat pipe and preparation method thereof |
| CN114894016A (en) * | 2022-04-29 | 2022-08-12 | 广州大学 | Metal wire array liquid absorption core one-way heat pipe and manufacturing method thereof |
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| CN116625149B (en) | 2024-06-14 |
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