WO2022260499A1 - 베이퍼 챔버의 윅부 형성 방법 및 베이퍼 챔버의 제조 방법 - Google Patents
베이퍼 챔버의 윅부 형성 방법 및 베이퍼 챔버의 제조 방법 Download PDFInfo
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- WO2022260499A1 WO2022260499A1 PCT/KR2022/008279 KR2022008279W WO2022260499A1 WO 2022260499 A1 WO2022260499 A1 WO 2022260499A1 KR 2022008279 W KR2022008279 W KR 2022008279W WO 2022260499 A1 WO2022260499 A1 WO 2022260499A1
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- Prior art keywords
- wick
- base material
- vapor chamber
- laser
- wick part
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 48
- 239000003507 refrigerant Substances 0.000 claims abstract description 36
- 238000012545 processing Methods 0.000 claims abstract description 31
- 238000009434 installation Methods 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 238000005245 sintering Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 12
- 230000010355 oscillation Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 description 11
- 238000001816 cooling Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000003570 air Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
- B23K26/364—Laser etching for making a groove or trench, e.g. for scribing a break initiation groove
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/245—Making recesses, grooves etc on the surface by removing material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/10—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
-
- 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
Definitions
- the present invention relates to a method for forming a wick part of a vapor chamber and a method for manufacturing a vapor chamber (METHOD FOR FORMING WICK PART FOR VAPOR-CHAMBER AND METHOD FOR MANUFACTURIG VAPOR CHAMBER), and more particularly, by using a laser irradiator on a base material of aluminum
- the present invention relates to a method of forming a wick portion of a vapor chamber capable of accurately and quickly forming a wick portion, and a method of manufacturing the vapor chamber.
- electronic components constituting an electronic device generate heat during operation.
- electronic devices such as computers, servers, and high-performance antenna devices include IC chips, CPUs, and transceiver elements, and these electronic components generate a large amount of heat during operation.
- Electronic components that generate heat (hereinafter, referred to as 'heating elements') must be cooled, and if not cooled, their performance is significantly deteriorated or in some cases damaged, making operation difficult.
- Types of cooling devices include an air cooling method in which ambient air is circulated for cooling and a refrigerant method in which cooling is performed by circulating a refrigerant.
- a blower fan that actively circulates air is necessarily provided, while in the refrigerant method, a compressor for compressing a gaseous refrigerant is essential to cause a phase change of the refrigerant.
- the necessary conditions for the blowing fan and the compressor not only increase the size of the electronic device, but also increase power consumption.
- a heat pipe type or vapor chamber type cooling device is formed with a hollow (or internal space) and a capillary, which is a porous body inside a pipe-shaped (or panel) body tube (or body panel) made of a thermally conductive material.
- the wick part (Capillary Wick, capillary wick part) is manufactured by a sintering method.
- the capillary wick unit is manufactured only by a sintering method, there are various limitations such as a sintering process and sintering conditions, resulting in a decrease in product productivity.
- the present invention has been made to solve the above technical problems, and provides a method of forming a wick portion of a vapor chamber and a manufacturing method of a vapor chamber capable of improving productivity of a product by forming a capillary wick portion shape using a laser. to do for that purpose.
- the present invention can manufacture wicks having various pattern shapes using a laser irradiator, it is another object to provide a method of forming a wick portion of a vapor chamber and a method of manufacturing a vapor chamber capable of securing a variety of heat dissipation designs. do.
- One embodiment of the method of forming the wick part of the vapor chamber according to the present invention includes a base material preparation step of preparing a base material of a chamber body in which a refrigerant is accommodated, and a laser installation step of setting a laser irradiator on one side of the base material prepared by the base material preparation step and a wick part processing step of processing a wick part having a predetermined size into a predetermined intaglio pattern shape with a predetermined irradiated laser beam using the laser irradiator installed in the laser installation step.
- a moving time of the laser beam may be set at a predetermined mark speed.
- the mark speed may be set to 300 mm/s.
- the oscillation frequency of the laser beam is set within a range of 20 kHz to 40 kHz, and the laser beam may be oscillated in a pulse mode.
- a line interval at which the laser beam is irradiated may be up to 0.01 mm.
- the wick part formed on the base material by the laser irradiator may be processed into any one pattern of cross, block, and 'L' shape.
- a method of manufacturing a vapor chamber includes a base material preparation step of preparing a base material of a chamber body in which a refrigerant is accommodated, a laser installation step of setting a laser irradiator on one side of the base material prepared by the base material preparation step, A wick part processing step of processing a wick part of a predetermined size into a predetermined intaglio pattern shape with a predetermined irradiated laser beam using the laser irradiator installed by the laser installation step and sintering to cover the wick part formed by the wick part processing step
- the process includes a wick body coupling step of coupling an outer surface, which is a processing plane, of a wick body formed of a porous body to include a plurality of pores to an inner surface of the vapor chamber.
- the coupling of the wick body may be a step of coupling the wick part formed on the inner surface of the vapor chamber and at least some of the plurality of pores exposed to the surface of the wick body to communicate with each other.
- the size of the wick part can be precisely adjusted in consideration of the type of refrigerant used and the surface tension of the material itself, it has an effect of improving heat dissipation performance of the product.
- the refrigerant phase changes and flows, and the contact area with the refrigerant is relatively increased, thereby improving heat dissipation performance.
- FIG. 1 is a sequence block diagram illustrating a method of forming a wick part of a vapor chamber according to an embodiment of the present invention
- FIG. 2 is a plan view showing a vapor chamber according to an embodiment of the present invention.
- FIG. 3 is a cross-sectional view taken along the line A-A of FIG. 2, and is a cross-sectional view for explaining the principle of heat transfer through the vapor chamber;
- FIG. 4 is a picture of an actual pattern using the laser irradiator of FIG. 1 and a partially enlarged view thereof;
- FIG. 5 is a plan view showing line intervals using the laser irradiator of FIG. 1;
- 6A and 6B are planar photographs showing an example of a pattern shape of a wick part formed on a base material by the laser irradiator of FIG. 1 .
- FIG. 1 is a block diagram showing a method of forming a wick part of a vapor chamber according to an embodiment of the present invention
- FIG. 2 is a plan view showing a vapor chamber according to an embodiment of the present invention
- FIG. 3 is a line A-A of FIG. As a cross-sectional view taken along, it is a cross-sectional view for explaining the principle of heat transfer through the vapor chamber.
- a vapor chamber which is a final product of an embodiment of the present invention, is one of the heat dissipation parts that can apply a heat dissipation method of the concept that excludes the induction of phase change of the refrigerant by a compressor, and is in an atmospheric pressure state without using a compressor. It is a typical radiator designed to cool a specific heating element that is electrically driven and generates heat by transferring heat while causing a phase change only by heat supplied from the outside.
- the vapor chamber 10 is coupled to a chamber body 20 that forms a predetermined vacuum space therein and accommodates a refrigerant, and the inside of the chamber body 20, , It may include a wick body 30 provided as a porous body in which a plurality of pores are formed to flow the refrigerant filled therein.
- the outer surface of the wick body 30 is cut to have a flat surface so as to be in close contact with the inner surface of the chamber body 20, and the chamber body 20 and the wick body 30 ), the refrigerant may be filled and flowed as described above.
- the plurality of pores formed in the wick body 30 are formed in the chamber body 20 by allowing gaseous refrigerant to flow or liquid refrigerant to be discharged to the outside by its own surface tension.
- P gaseous refrigerant to flow or liquid refrigerant to be discharged to the outside by its own surface tension.
- P plays a role in discharging.
- the refrigerant in a liquid state discharged through each wick part P passes through the wick part formed by the wick part processing step (S30) described later along at least between the inner surface of the chamber body 20 and the outer surface of the wick body 30. It can move in one direction or the other.
- the wick body 30 is a part produced by a sintering method, and is formed of a porous material to have a capillary tube structure, and increases the thermal contact area of the stored refrigerant, thereby increasing the liquid refrigerant to gaseous refrigerant As well as promoting the phase change of the furnace, it can be a passage through which the refrigerant converted to a gaseous refrigerant passes.
- the refrigerant filled therein is transferred While causing a phase change by heat, it is changed into a liquid state and discharged to the outside of the pores in the thickness direction of the chamber body 20, and the refrigerant in the liquid state is transferred to the chamber by surface tension and capillary force through the wick part P having a predetermined shape.
- Heat is transferred to the other side in the thickness direction of the body 20, and the refrigerant in a liquid state moves along the inner side of the chamber body 20, and the heat transferred to the other side in the thickness direction of the chamber body 20 is transferred to the outside. It uses the principle of heat dissipation.
- the inner surface of the chamber body 20 to which the outer surface of the wick body 30 is in close contact has a constant in a direction horizontal to the inner surface of the chamber body 20.
- the size of the fluid path must be formed, and the size is preferably designed in consideration of the surface tension (or anti-gravity) of the fluid used as the refrigerant.
- the refrigerant filled between the chamber body 20 and the wick body 30 may include any one of acetone, ammonia, and distilled water. Since the size of surface tension or anti-gravity varies depending on the type of refrigerant to be filled, it is necessary to properly design and change the size of the depth and width of the pattern formed by the wick part processing step (S30) to be described later.
- an embodiment of the present invention discloses important technical features of a method of forming the wick part of the wick body 30 provided inside the vapor chamber 10 .
- a method of forming a wick part of a vapor chamber includes a base material preparation step of preparing a base material that is a chamber body 20 constituting a wick body 30 among the configuration of the vapor chamber (S10), the laser installation step (S20) of setting the laser irradiator on one side of the base material prepared by the base material preparation step (S10), and the laser irradiator installed by the laser installation step (S20) to a predetermined irradiated laser beam.
- a wick part processing step (S30) of processing the wick part P having a predetermined shape is included.
- the base material preparation step (S10) is a base material constituting the chamber body 20, a thermally conductive material (particularly, an aluminum material) before the wick portion P is processed and formed by a laser irradiator described later. ) can be defined as the step of preparing the parent material.
- a wick body 30 having a plurality of pores manufactured through a sintering process was used as a base material, and the outer surface of the wick body 30 was cut into a flat surface, and then a wick part was formed on the cut flat surface.
- the wick body 30, which is a base material for forming the wick part must be manufactured through a sintering process.
- the base material on which the wick part P is formed is set to the chamber body 20 rather than the wick body 30, and this is a very simple laser beam
- the base material on which the wick part P is formed is set to the chamber body 20 rather than the wick body 30, and this is a very simple laser beam
- FIG. 4 is an actual pattern photograph and a partial enlarged view thereof using the laser irradiator of FIG. 1
- FIG. 5 is a plan view showing line intervals using the laser irradiator of FIG. 1
- FIGS. 6a and 6b are by the laser irradiator of FIG. It is a plane photograph showing an embodiment of the pattern shape of the wick part formed on the base material.
- the laser installation step (S20) is a step of installing and setting a laser irradiator for irradiating a laser beam with a predetermined beam width.
- the chamber body 20, which is a base material, is fixed on the processing lathe, and a laser irradiator capable of irradiating a laser beam of a predetermined beam width is installed on the processing lathe, and a laser beam irradiation of the laser irradiator It may be a step of setting a moving speed and a moving direction to match a pattern shape to be described later.
- the wick part P is formed in the form of an intaglio pattern on one surface of the base material corresponding to the inner surface of the chamber body 20 by setting the moving time of the laser beam at a predetermined mark speed. It may be a step of processing.
- the mark speed may be set to 300 mm/s. If the mark speed is set to move too fast with a mark speed exceeding 30 mm/s, the amount of heat transferred to the base material in the form of a laser beam is too small to form a desired pattern shape, and the mark speed is set to move too slowly with a mark speed of less than 30 mm/s. When set, since the amount of heat transferred to the base material in the form of a laser beam is too large, a problem in that the shape of the base material is deformed more than the size of the wick portion required may occur.
- the wick part processing step (S30) is performed on the part corresponding to the inner surface of the chamber body 20.
- this step of processing and forming into a predetermined intaglio pattern there is an advantage in that the contact area with the refrigerant is further increased than in the prior art. Although the increase in the contact area with the refrigerant is subtle, it leads to the advantage of improving the heat dissipation performance of the product.
- the oscillation frequency of the laser beam is set within the range of 20 to 40 kHz, but the laser beam may be oscillated in pulse mode.
- the oscillation frequency of the laser beam of the laser irradiator for forming the wick part P is most appropriate in the range of 20 to 40 kHz.
- an interval between lines at which the laser beam is irradiated may be up to 0.01 mm, as shown in FIG. 5 .
- the line interval is too wide (ie, exceeds 0.01 mm), it is because there is no capillary force and no water path, so anti-gravity characteristics cannot be implemented.
- the capillary force between the chamber body 20 and the wick body 30 is small, considering the flow of the refrigerant according to the internal temperature change, the heat source part should always be located at a low position, and the heat dissipation part should always be located at a high position. There are design restrictions that must be placed.
- Phosphorus 0.1 mm has important technical significance.
- the wick portion P formed on the wick body 30 by the laser irradiator has a checkered pattern as shown in FIG. 4, as well as a cross pattern as shown in FIG. 6A and FIG. 6B as referenced. As described above, it can be processed in any one of the block patterns.
- the method for forming the wick part of the vapor chamber according to an embodiment of the present invention can precisely and quickly form the wick part P using a laser irradiator, thereby greatly improving product productivity. do.
- the wick body is formed on the inner surface of the chamber body 20 including the wick portion P processed in a pattern shape by the above-described method for forming the wick portion of the vapor chamber.
- (30) further includes a wick body coupling step (reference numeral not indicated).
- the method of manufacturing a vapor chamber includes a base material preparation step (S10), a laser installation step of setting a laser irradiator on one side of the base material prepared by the base material preparation step (S20), and Through the wick part processing step (S30) using the laser irradiator installed by the laser installation step (S20), the above-described checkered pattern, cross pattern, block pattern, and 'D' pattern shape Wick part (P) in any one of the pattern shapes
- a process of combining the wick body 30 of coupling the wick body 30 formed of a porous body so as to include a plurality of pores may be further performed on the inner surface of the chamber body 20 formed thereon.
- the coupling of the wick body may be a step of coupling the wick portion P formed on the inner surface of the chamber body 20 and at least some of the plurality of pores exposed to the surface of the wick body 30 to communicate with each other.
- the wick body 30 may be manufactured through a sintering process to form a porous body including a plurality of pores.
- the wick body 30 prepares a wick raw material made of a predetermined metal material (eg, copper (Cu) material) in a powder form.
- a wick raw material made of a predetermined metal material (eg, copper (Cu) material) in a powder form.
- the wick raw material preferably has a particle size of 30 to 300 um and a purity of 90 to 99%.
- the sintering temperature conditions vary depending on whether additives are added to the wick raw material, but the sintering temperature after adding a predetermined amount of glass frit among the additives may be 350 to 550° C./2hr as the most preferred condition.
- the conventional method (process) of forming the wick part through the sintering process in manufacturing the wick body Since it is possible to process and form the wick portion P in a pattern using a more precise laser irradiator on the inner surface of the chamber body 20 capable of forming capillary force between the wick body 30 and the wick body 30,
- the advantage of improving heat dissipation performance can be provided.
- the method of forming the wick part of the vapor chamber and the method of manufacturing the vapor chamber according to an embodiment of the present invention is capable of manufacturing the wick part P having a capillary tube (capillary tube) effect through precise adjustment of the laser.
- it provides the advantage of being able to actively change the design according to the type of refrigerant used.
- the present invention provides a method of forming a wick portion of a vapor chamber and a method of manufacturing a vapor chamber capable of improving product productivity and securing diversity in heat dissipation design by forming a shape of a capillary wick portion using a laser.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Laser Beam Processing (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
Claims (8)
- 냉매가 수용되는 챔버 바디의 모재를 준비하는 모재 준비 단계;상기 모재 준비 단계에 의하여 준비된 모재의 일측에 레이저 조사기를 세팅하는 레이저 설치 단계; 및상기 레이저 설치 단계에 의하여 설치된 상기 레이저 조사기를 이용하여 소정의 조사된 레이저 빔으로 소정 크기의 윅부를 소정의 음각 패턴 형태로 가공하는 윅부 가공 단계; 를 포함하는, 베이퍼 챔버의 윅부 형성 방법.
- 청구항 1에 있어서,상기 윅부 가공 단계는, 상기 레이저 빔은 소정의 마크 스피드(Mark Speed)로 이동 시간이 설정된, 베이퍼 챔버의 윅부 형성 방법.
- 청구항 2에 있어서,상기 마크 스피드는, 300mm/s로 설정되는, 베이퍼 챔버의 윅부 형성 방법.
- 청구항 1에 있어서,상기 윅부 가공 단계는, 상기 레이저 빔의 발진 주파수가 20kHz 내지 40kHz 범위 내로 설정되되, 상기 레이저 빔은 pulse mode로 발진되는, 베이퍼 챔버의 윅부 형성 방법.
- 청구항 1에 있어서,상기 레이저 빔이 조사되는 라인(line) 간격은, 최대 0.01mm를 초과하지 않도록 설정된, 베이퍼 챔버의 윅부 형성 방법.
- 청구항 1에 있어서,상기 레이저 조사기에 의하여 상기 모재에 형성되는 상기 윅부는 Cross, Block 및 'ㄹ'자 형상 중 어느 하나의 패턴으로 가공되는, 베이퍼 챔버의 윅부 형성 방법.
- 냉매가 수용되는 챔버 바디의 모재를 준비하는 모재 준비 단계;상기 모재 준비 단계에 의하여 준비된 모재의 일측에 레이저 조사기를 세팅하는 레이저 설치 단계;상기 레이저 설치 단계에 의하여 설치된 상기 레이저 조사기를 이용하여 소정의 조사된 레이저 빔으로 소정 크기의 윅부를 소정의 음각 패턴 형태로 가공하는 윅부 가공 단계; 및상기 윅부 가공 단계에 의하여 형성된 상기 윅부를 덮도록 소결 공정으로 다수의 기공을 포함하도록 다공체로 형성된 윅 바디의 가공 평면인 외측면을 상기 챔버 바디의 내측면에 결합시키는 윅 바디 결합 단계; 를 포함하는, 베이퍼 챔버의 제조 방법.
- 청구항 7에 있어서,상기 윅 바디 결합 단계는, 상기 챔버 바디의 내측면에 형성된 상기 윅부와 상기 윅 바디의 표면으로 노출된 다수의 기공 중 적어도 일부가 상호 연통되게 결합시키는 단계인, 베이퍼 챔버의 제조 방법.
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CN202280041753.XA CN117561140A (zh) | 2021-06-11 | 2022-06-13 | 真空腔均热板的芯部形成方法及真空腔均热板的制造方法 |
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US20190082560A1 (en) * | 2017-09-08 | 2019-03-14 | Toyota Motor Engineering & Manufacturing North America, Inc. | Systems and methods for additive manufacturing of wick structure for vapor chamber |
KR20200056917A (ko) * | 2018-11-15 | 2020-05-25 | 주식회사 씨지아이 | 윅 장착형 무방향성 베이퍼 챔버 |
KR102126935B1 (ko) * | 2020-02-18 | 2020-07-07 | 주식회사 디케이 | 커팅된 와이어와 금속 파우더를 이용한 베이퍼챔버 윅 제조방법 및 그 구조물 |
KR102257692B1 (ko) * | 2019-12-09 | 2021-05-31 | 주식회사 큐브테크 | 지그를 이용한 베이퍼 챔버 제조방법 |
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US20190082560A1 (en) * | 2017-09-08 | 2019-03-14 | Toyota Motor Engineering & Manufacturing North America, Inc. | Systems and methods for additive manufacturing of wick structure for vapor chamber |
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