CN112857110A - Method for manufacturing flat heat pipe - Google Patents
Method for manufacturing flat heat pipe Download PDFInfo
- Publication number
- CN112857110A CN112857110A CN202110084234.9A CN202110084234A CN112857110A CN 112857110 A CN112857110 A CN 112857110A CN 202110084234 A CN202110084234 A CN 202110084234A CN 112857110 A CN112857110 A CN 112857110A
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- China
- Prior art keywords
- plate body
- heat pipe
- flat
- manufacturing
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0233—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the conduits having a particular shape, e.g. non-circular cross-section, annular
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
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- 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 relates to a method for manufacturing a flat heat pipe, which comprises the following steps: providing a first plate body, a second plate body and a capillary structure body; selectively fixing the capillary structure on any one of the first plate body and the second plate body; correspondingly overlapping the first plate body and the second plate body, sealing and sealing the side edges of the first plate body and the second plate body, which are open at the periphery, to form a flat tubular body, and reserving an air-pumping water-filling part; the flat tubular body is vacuumized, filled with working liquid and sealed at the air-extracting and water-filling part, so that the flat heat pipe can be thinned by the flat heat pipe manufacturing method, and the thinned flat heat pipe can still have a complete steam channel.
Description
The invention is a divisional application, the parent of which is a Chinese patent with the application date of 2015, 1, 14, the application number of 201510017345.2 and the name of 'flat heat pipe manufacturing method'.
Technical Field
The invention relates to a flat heat pipe manufacturing method, in particular to a flat heat pipe manufacturing method which can achieve the thinning of a flat heat pipe and ensure that the thinned flat heat pipe still has a smooth steam channel.
Background
The trend of the existing electronic mobile equipment is light and thin, the novel electronic mobile equipment is not only light and thin, but also improved in operation efficiency, but also limited in that the space for accommodating electronic elements therein is reduced along with the improvement of operation efficiency and the reduction of the whole thickness, and when the operation efficiency is improved, the heat generated by the operation of the corresponding electronic elements is increased, so that the heat dissipation of each electronic element is assisted by a heat dissipation element.
In the prior art, when a heat pipe or a temperature-equalizing plate is thinned, the whole body is thinned, so that the thin heat pipe is difficult to fill powder and sinter after being thinned, and is difficult to realize an extremely thinned structure, or when the heat pipe is pressed into a flat structure after being filled with powder and sintered, sintered powder or other capillary structures (grids or fiber bodies) in the heat pipe are crushed and damaged, and the thin heat pipe fails.
In addition, the existing vapor-liquid heat pipe is thinner, and the internal cavity is easy to deform after the vapor-liquid heat pipe is sealed by air extraction without an internal support structure, so that the existing thin heat pipe and the vapor channel inside the vapor-liquid heat pipe are easy to be compressed and reduced or even have no vapor channel, which affects the efficiency of the internal overall vapor-liquid circulation, and how to improve the thinned vapor-liquid heat pipe and the vapor-liquid circulation structure inside the heat pipe is the current target to be improved.
Disclosure of Invention
The invention aims at the problems and provides a flat heat pipe manufacturing method which can realize the thinning of the flat heat pipe and can keep the thinned flat heat pipe to have a complete steam channel.
The present invention provides a method for manufacturing a flat heat pipe, which comprises the following steps: providing a first plate body, a second plate body and a capillary structure body; selectively fixing the capillary structure on any one of the first plate body and the second plate body; correspondingly overlapping the first plate body and the second plate body, sealing and sealing the side edges of the first plate body and the second plate body, which are open at the periphery, to form a flat tubular body, and reserving an air-pumping water-filling part; the flat tubular body is vacuumized and filled with working liquid, and the air-pumping water-filling part is sealed.
The first plate body and the second plate body are made of copper materials.
The step of selectively fixing the capillary structure on any one of the first plate body and the second plate body further comprises the following steps: a plurality of grooves are arranged on one side of the second plate body opposite to the first plate body.
The grooves are staggered longitudinally and transversely, and the grooves are formed by etching or any one of mechanical machining or electrical discharge machining.
The capillary structure may be any of a sintered powder body or a mesh body or a fiber body or a combination of a sintered powder body or a mesh body or a fiber body.
And carrying out sealing edge sealing on the first plate body and the second plate body by either diffusion bonding, ultrasonic welding or spot welding.
The capillary structure is selectively fixed on one of the first plate body and the second plate body by diffusion bonding, ultrasonic welding or spot welding.
The capillary structure in the flat tubular body is arranged between the first plate body and the second plate body in pairs, and the capillary structure, the first plate body and the second plate body define at least one steam channel together.
The flat heat pipe manufactured by the method of the invention still has a complete steam channel after thinning, thereby ensuring that the internal cavity of the thinned flat heat pipe can smoothly keep steam-liquid circulation.
Drawings
FIG. 1 is an exploded perspective view of a first embodiment of a flat heat pipe of the present invention;
FIG. 2 is an assembled cross-sectional view of a first embodiment of a flat-plate heat pipe of the present invention;
FIG. 3 is an assembled cross-sectional view of a second embodiment of a flat plate heat pipe of the present invention;
FIG. 4 is a flowchart illustrating steps of a first embodiment of a method for manufacturing a flat heat pipe according to the present invention;
FIG. 5 is a flowchart illustrating a second embodiment of a method for manufacturing a flat heat pipe according to the present invention.
Description of the symbols
Flat tubular body 1
Heat sink 16
Heat dissipating part 17
Working fluid 2
Detailed Description
The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.
Referring to fig. 1 and 2, which are three-dimensional exploded and assembled cross-sectional views of a flat heat pipe according to a first embodiment of the present invention, as shown in the drawings, the flat heat pipe includes: a flat tubular body 1;
the flat tubular body 1 has a first plate 11, a second plate 12, at least one capillary structure 13 and a working fluid 2 (as shown in fig. 3), the first and second plates 11, 12 are overlapped, the capillary structure 13 is disposed between the first and second plates 11, 12, and the capillary structure 13 and the first and second plates 11, 12 define at least one vapor channel 14.
The capillary structure 13 is any one of a mesh, a fiber, a sintered powder, a linear woven structure, and a sintered powder, and the sintered powder is used as an illustrative example in the present embodiment, but the present invention is not limited thereto. The thickness of the first plate body and the second plate body is 0.01-0.15 mm.
In the preferred embodiment, the capillary structures 13 are arranged in pairs, i.e. the vapor channel 14 is formed between two capillary structures 13.
Referring to fig. 3, which is a combined cross-sectional view of a second embodiment of the flat plate heat pipe of the present invention, as shown in the drawings, the technical features of the structure of this embodiment are the same as those of the first embodiment, and therefore will not be described herein again, but the difference between this embodiment and the first embodiment is that the flat tubular body 1 further has a plurality of grooves 15, a heat absorbing portion 16 and a heat dissipating portion 17, the grooves 15 are disposed on the heat absorbing portion 16, the grooves 15 are staggered in the transverse direction and the longitudinal direction, the grooves 15 are disposed on one side of the second plate 12 opposite to the capillary structure 13, and the grooves 15 are staggered in the transverse direction and the longitudinal direction, so that the liquid working fluid can be returned to the heat absorbing portion 16 along the same radial direction Y of the flat tubular body 1.
Referring to fig. 4, which is a flowchart illustrating steps of a method for manufacturing a flat heat pipe according to a first embodiment of the present invention, and referring to fig. 1 to 3, the method for manufacturing a flat heat pipe according to the present invention includes the following steps:
s1: providing a first plate body, a second plate body and a capillary structure body;
a first plate body 11, a second plate body 12 and at least one capillary structure body 13 which can be used as a water absorption core and a supporting structure are provided, wherein the first plate body 11, the second plate body 12 and the water absorption core are made of copper materials, and the thickness of the first plate body 11 and the thickness of the second plate body 12 are 0.01-0.15 mm.
The capillary structure 13 may be any one of a sintered powder body or a mesh body or a fiber body or a combination of a sintered powder body or a mesh body or a fiber body.
S2: selectively fixing the capillary structure on any one of the first plate body and the second plate body;
optionally, a wick structure 13, which serves as a wick and support structure, is disposed on the first and second plate members 11, 12, either by diffusion bonding or ultrasonic or spot welding.
S3: correspondingly overlapping the first plate body and the second plate body, sealing and sealing the side edges of the first plate body and the second plate body, which are open at the periphery, to form a flat tubular body, and reserving an air-pumping water-filling part;
after the first and second plate bodies 11, 12 are correspondingly overlapped, the peripheral sides of the first and second plate bodies 11, 12 are sealed and sealed by any one of diffusion bonding, ultrasonic welding or spot welding, so as to form a flat tubular body 1 and a steam channel 14 (such as a cavity) inside the flat tubular body 1, and an air-pumping water-filling part is reserved for vacuumizing the interior of the flat tubular body 1 and filling the working liquid 2.
S4: the flat tubular body is vacuumized and filled with working liquid, and the air-pumping water-filling part is sealed.
The reserved air-pumping water-filling part of the flat tubular body 1 is vacuumized and filled with working liquid 2, and finally, the reserved air-pumping water-filling part is sealed.
Referring to fig. 5, which is a flowchart illustrating steps of a second embodiment of a method for manufacturing a flat heat pipe according to the present invention and referring to fig. 1 to 3, as shown in the drawings, the steps of the present embodiment are the same as those of the first embodiment, and therefore will not be described herein again, but the difference between the present embodiment and the first embodiment lies in that after the step of selectively fixing the capillary structure to one of the first and second plate bodies, a step S5 is further included: a plurality of grooves are formed in one side, opposite to the first plate, of the second plate;
a plurality of grooves 15 are formed in one side of the second plate body opposite to the first plate body, the grooves 15 are staggered with each other in the longitudinal direction and the transverse direction, and the grooves 15 are formed by any one of etching, machining or electric discharge machining.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (7)
1. A method for manufacturing a flat heat pipe is characterized by comprising the following steps:
providing a first plate body, a second plate body and two capillary structure bodies which are arranged in parallel;
the inner side of an evaporation area of the second plate body is provided with criss-cross groove parts, and the two capillary structures are overlapped on the groove parts or connected with the groove parts;
the first plate body, the two capillary structure bodies and the second plate body which are arranged in parallel are sequentially and correspondingly overlapped, and the peripheral sides of the first plate body and the second plate body which are correspondingly overlapped are machined, sealed and sealed to form a flat heat pipe with a cavity inside, and an air-extracting and water-filling part is reserved;
and vacuumizing the air-pumping water-filling part of the flat heat pipe, filling working liquid, and sealing the air-pumping water-filling part.
2. A method of manufacturing a flat plate heat pipe as claimed in claim 1, wherein: the groove portion is formed on the inner side of the evaporation area of the second plate body by any one of etching, machining and electric discharge machining.
3. A method of manufacturing a flat plate heat pipe as claimed in claim 1, wherein: the two capillary structures are any one of sintered powder bodies, grids or fiber bodies, or the combination of the sintered powder bodies, the grids or the fiber bodies.
4. A method of manufacturing a flat plate heat pipe as claimed in claim 1, wherein: the two capillary structures are selectively fixed on the inner side of any one of the first plate body and the second plate body and are fixed by any one of diffusion bonding, ultrasonic welding or spot welding.
5. A method of manufacturing a flat plate heat pipe as claimed in claim 1, wherein: the two capillary structures are arranged between the first plate body and the second plate body in pairs, and define at least one steam channel together with the first plate body and the second plate body.
6. A method of manufacturing a flat plate heat pipe as claimed in claim 1, wherein: the mechanical processing of the peripheral sides of the first plate body and the second plate body is to carry out sealing and edge sealing by diffusion bonding or ultrasonic welding or spot welding, so that the flat heat pipe with the cavity inside is formed.
7. A method of manufacturing a flat plate heat pipe as claimed in claim 1, wherein: the flat heat pipe is provided with the evaporation area and at least one condensation area, the evaporation area and the condensation area are respectively a heat absorption part and a heat dissipation part, and at least one transmission area is arranged between the evaporation area and the condensation area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110084234.9A CN112857110B (en) | 2015-01-14 | 2015-01-14 | Method for manufacturing flat heat pipe |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510017345.2A CN105841533A (en) | 2015-01-14 | 2015-01-14 | Method for manufacturing flat heat pipe |
| CN202110084234.9A CN112857110B (en) | 2015-01-14 | 2015-01-14 | Method for manufacturing flat heat pipe |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510017345.2A Division CN105841533A (en) | 2015-01-14 | 2015-01-14 | Method for manufacturing flat heat pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112857110A true CN112857110A (en) | 2021-05-28 |
| CN112857110B CN112857110B (en) | 2023-03-31 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510017345.2A Pending CN105841533A (en) | 2015-01-14 | 2015-01-14 | Method for manufacturing flat heat pipe |
| CN202110084234.9A Active CN112857110B (en) | 2015-01-14 | 2015-01-14 | Method for manufacturing flat heat pipe |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510017345.2A Pending CN105841533A (en) | 2015-01-14 | 2015-01-14 | Method for manufacturing flat heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105841533A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108907460A (en) * | 2018-07-09 | 2018-11-30 | 奇鋐科技股份有限公司 | Hot cell manufacturing method |
| WO2020087357A1 (en) * | 2018-10-31 | 2020-05-07 | 深圳市万景华科技有限公司 | Heat pipe for smart terminal, and manufacturing method for same |
| CN111207614A (en) * | 2018-11-22 | 2020-05-29 | 东莞祥龙五金制品有限公司 | Manufacturing method of vapor chamber and vapor chamber structure |
| CN112197630A (en) * | 2020-09-27 | 2021-01-08 | 北京空间飞行器总体设计部 | Evaporator and processing method thereof |
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| CN2580604Y (en) * | 2002-10-16 | 2003-10-15 | 徐惠群 | Anti-high voltage strain and curvable plate heat pipe |
| CN1707785A (en) * | 2004-06-11 | 2005-12-14 | 鸿富锦精密工业（深圳）有限公司 | Liquid-cooled radiator |
| CN101141871A (en) * | 2007-10-26 | 2008-03-12 | 北京工业大学 | Integration designed heat radiator with flat heat pipe spreader |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845321A (en) * | 2005-04-08 | 2006-10-11 | 奇鋐科技股份有限公司 | Flat-type heat pipe manufacturing method using ultrasonic welding |
| CN100453957C (en) * | 2006-02-21 | 2009-01-21 | 奇鋐科技股份有限公司 | Flat heat-tube, its making method and packing unit |
| CN100562702C (en) * | 2006-03-02 | 2009-11-25 | 奇鋐科技股份有限公司 | The manufacture method of flat plate heat tube |
| CN202142519U (en) * | 2011-02-18 | 2012-02-08 | 奇鋐科技股份有限公司 | Thin type hot plate structure |
| US20140138057A1 (en) * | 2012-11-18 | 2014-05-22 | Chin-Hsing Horng | Structure of low-profile heat pipe |
| CN104006689A (en) * | 2013-02-27 | 2014-08-27 | 象水国际股份有限公司 | Plate type heat pipe and manufacturing method thereof |
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2015
- 2015-01-14 CN CN201510017345.2A patent/CN105841533A/en active Pending
- 2015-01-14 CN CN202110084234.9A patent/CN112857110B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2580604Y (en) * | 2002-10-16 | 2003-10-15 | 徐惠群 | Anti-high voltage strain and curvable plate heat pipe |
| CN1707785A (en) * | 2004-06-11 | 2005-12-14 | 鸿富锦精密工业（深圳）有限公司 | Liquid-cooled radiator |
| CN101141871A (en) * | 2007-10-26 | 2008-03-12 | 北京工业大学 | Integration designed heat radiator with flat heat pipe spreader |
| CN101530931A (en) * | 2008-02-21 | 2009-09-16 | 郑文春 | Microgrooves as wick structures in heat pipes and method for fabricating the same |
| CN101839662A (en) * | 2009-03-21 | 2010-09-22 | 富瑞精密组件（昆山）有限公司 | Heat pipe |
| CN102646651A (en) * | 2011-02-18 | 2012-08-22 | 奇鋐科技股份有限公司 | Thin hot plate structure |
| CN103096685A (en) * | 2011-11-02 | 2013-05-08 | 奇鋐科技股份有限公司 | Soaking plate capillary structure and forming method thereof |
| US20140138056A1 (en) * | 2012-11-18 | 2014-05-22 | Chin-Hsing Horng | Low-profile composite heat pipe |
| CN204085275U (en) * | 2014-10-22 | 2015-01-07 | 奇鋐科技股份有限公司 | Thin heat pipe structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112857110B (en) | 2023-03-31 |
| CN105841533A (en) | 2016-08-10 |
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