CN111780603A - Large-plane vapor chamber with composite liquid absorption cores - Google Patents
Large-plane vapor chamber with composite liquid absorption cores Download PDFInfo
- Publication number
- CN111780603A CN111780603A CN202010847673.6A CN202010847673A CN111780603A CN 111780603 A CN111780603 A CN 111780603A CN 202010847673 A CN202010847673 A CN 202010847673A CN 111780603 A CN111780603 A CN 111780603A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- area
- wick
- vapor chamber
- lower cover
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 93
- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 238000010521 absorption reaction Methods 0.000 title claims description 16
- 238000001704 evaporation Methods 0.000 claims abstract description 22
- 230000008020 evaporation Effects 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 31
- 229910052802 copper Inorganic materials 0.000 claims description 29
- 239000010949 copper Substances 0.000 claims description 29
- 238000007747 plating Methods 0.000 claims description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- 239000010936 titanium Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000002848 electrochemical method Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims 1
- 238000012876 topography Methods 0.000 claims 1
- 238000012546 transfer Methods 0.000 abstract description 5
- 239000011162 core material Substances 0.000 description 79
- 238000002791 soaking Methods 0.000 description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- 239000006260 foam Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000007788 roughening Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 238000001755 magnetron sputter deposition Methods 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- WCERXPKXJMFQNQ-UHFFFAOYSA-N [Ti].[Ni].[Cu] Chemical compound [Ti].[Ni].[Cu] WCERXPKXJMFQNQ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—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
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0233—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the conduits having a particular shape, e.g. non-circular cross-section, annular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0283—Means for filling or sealing heat pipes
-
- 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
-
- 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
- F28F21/089—Coatings, claddings or bonding layers made from metals or metal 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)
- Laminated Bodies (AREA)
Abstract
The invention relates to a large-plane vapor chamber of a composite liquid absorbing core, which comprises an upper cover plate and a lower cover plate, wherein the peripheries of the upper cover plate and the lower cover plate are hermetically connected to form a sealed working medium cavity, the sealed working medium cavity is in a vacuum state and is filled with a liquid working medium, the upper cover plate is provided with a first area and a second area, the first area is close to an evaporation end and is provided with a plurality of first support columns which are densely arranged, the second area is provided with a plurality of second support columns which are sparsely arranged, and a second liquid absorbing core is arranged in a gap between the second support columns; the lower cover plate is provided with a third area and a fourth area, wherein the size of the third area corresponds to that of the first area and is used for placing the first liquid absorbing core; the size of the fourth region corresponds to the second region, and is provided with the third support columns which are arranged sparsely, the number and the arrangement mode of the third support columns correspond to those of the second support columns, so that the problems of insufficient steam flowing space, poor heat transfer performance and poor structural strength in the large-plane vapor chamber can be effectively solved.
Description
Technical Field
The invention belongs to the technical field of design and manufacture of hot plates, and particularly relates to a large-plane vapor chamber with a composite liquid absorption core.
Background
At present, various structural forms of vapor chamber have been proposed. With the trend of the vapor chamber towards large plane and ultra-thin, various design problems need to be comprehensively considered. In the design process, there are generally the following problems: or insufficient vapor flow space, or weak capillary force of the wick, or insufficient strength of the overall structure, etc.
Disclosure of Invention
The invention aims to solve the technical problem of providing a large-plane vapor chamber of a composite liquid absorption core aiming at the defects of the prior art. The vapor chamber adopts composite liquid absorbing cores with different liquid absorbing core materials and structural forms, and is matched with the evaporation zone and the condensation zone of the vapor chamber, so that the problems of insufficient vapor flowing space, poor heat transfer performance and insufficient structural strength in the ultrathin large-plane vapor chamber can be effectively solved. The invention is especially suitable for large plane soaking plates with the area of more than 40mm x 40 mm.
In order to solve the technical problems, the invention adopts the following technical scheme: a large-plane vapor chamber of a composite liquid absorption core comprises an upper cover plate and a lower cover plate, wherein the peripheries of the upper cover plate and the lower cover plate are connected in a sealing manner to form a sealed working medium cavity, the sealed working medium cavity is in a vacuum state and is filled with a liquid working medium, the upper cover plate is provided with a first area and a second area, the first area is close to an evaporation end and is provided with a plurality of first support columns which are densely arranged, the second area is provided with a plurality of second support columns which are sparsely arranged, and a second liquid absorption core is arranged in a gap between the second support columns;
the lower cover plate is provided with a third area and a fourth area, wherein the size of the third area corresponds to that of the first area and is used for placing the first liquid absorbing core; the size of the fourth area corresponds to that of the second area, third support columns which are sparsely arranged are arranged, and the number and the arrangement mode of the third support columns correspond to those of the second support columns.
Furthermore, the first liquid absorbing core is a liquid absorbing core of a sintered or metal fiber capillary structure, the second liquid absorbing core is a liquid absorbing core of a linear or strip-shaped metal fiber or sintered capillary structure, and the second liquid absorbing core is overlapped with the boundary of the first liquid absorbing core to ensure good contact.
Furthermore, the upper surface of the first liquid suction core is attached to the first support column, the lower surface of the first liquid suction core is attached to the concave surface of the lower cover plate, the thickness of the first liquid suction core is equal to that of the concave surface of the lower cover plate, and the size of the first liquid suction core is equal to that of the heat source area.
Further, the upper surface of second wick is laminated with the lower surface of upper cover plate, and the lower surface is laminated with the upper surface of apron down, and the thickness of second wick equals the gross thickness in sealed working medium chamber.
Further, the second liquid absorbing core extends from the evaporation end to the condensation end of the soaking plate, and the cross section thickness of the second liquid absorbing core is larger than that of the first liquid absorbing core.
Further, the third area is subjected to surface roughening treatment, and a continuous capillary structure with a hairy morphology is formed on the surface by a physical method including nanosecond laser processing; or corroding the surface of the porous material by using a chemical or electrochemical method to form a hydrophilic porous structure; or the surface of the substrate is roughened by a thermal oxidation method.
Furthermore, the wall materials of the upper cover plate and the lower cover plate are high-strength light materials including copper, stainless steel, titanium or titanium alloy, aluminum or aluminum alloy, magnesium or magnesium alloy, when the wall materials are stainless steel, titanium or titanium alloy, the inner walls of the upper cover plate and the lower cover plate are respectively plated with a second material layer and a third material layer to form a composite wall material, wherein the second material layer is a nickel plating layer, a titanium plating layer, a zinc plating layer or a chromium plating layer, and the third material layer is a copper plating layer.
Furthermore, the wall thickness of the upper cover plate and the lower cover plate is 0.1-0.3mm, and concave surfaces with a plurality of regularly-arranged support columns are etched on the lower surface of the upper cover plate and used as steam cavities.
Furthermore, the first liquid absorbing core is overlapped with the second liquid absorbing core through a plurality of small grooves arranged at the boundary to form a composite liquid absorbing core, and hydrophilic treatment is carried out on the composite liquid absorbing core.
Furthermore, the outer peripheries of the upper cover plate and the lower cover plate are combined into a whole in a diffusion welding mode, and the second supporting columns and the third supporting columns are combined into a whole in a welding mode.
Compared with the prior art, the invention has the following advantages:
(1) the wall materials of the upper cover plate and the lower cover plate of the soaking plate adopt high-strength light materials, such as copper, stainless steel, titanium or titanium alloy, aluminum or aluminum alloy, magnesium or magnesium alloy and the like. When the wall material is stainless steel, titanium or titanium alloy, the second layer material and the third layer material are plated on the inner wall respectively to form the composite wall material. Wherein the second material layer is a nickel coating, a titanium coating, a zinc coating or a chromium coating, etc.; the third material layer is a copper plating layer. The wall material can ensure the strength of the plate body, the second layer material ensures the uniformity and firmness of copper plating, and the innermost copper plating ensures the hydrophilicity of the wall surface.
(2) The vapor chamber of the invention adopts the composite liquid absorbing core to solve the problems of insufficient capillary force and insufficient steam space of the large-plane vapor chamber, the composite liquid absorbing core consists of a first liquid absorbing core and a second liquid absorbing core, and hydrophilic treatment is carried out on the composite liquid absorbing core, such as magnetron sputtering plating titanium dioxide, a thermal oxidation method or plasma cleaning and the like, so as to enhance the hydrophilicity of foam copper or copper wires and the like. The first liquid absorbing core is a sintered capillary structure or a metal fiber capillary structure, such as a copper foam or a woven copper mesh, the plane size of the first liquid absorbing core is equivalent to the area of a heat source, and the first liquid absorbing core is placed at an evaporation end in the cavity of the soaking plate. The second liquid absorbing core is a linear or strip-shaped metal fiber or a sintered capillary structure, such as a copper wire or strip-shaped foam copper or strip-shaped copper mesh, extends from the evaporation end to the far end of the soaking plate, and is in lap joint with the boundary of the first liquid absorbing core structure to ensure good contact.
(3) The thickness of the first liquid absorbing core is equal to that of the concave surface of the lower cover plate, the lower surface of the first liquid absorbing core is attached to the concave surface of the lower cover plate, the upper surface of the first liquid absorbing core is attached to the supporting columns of the upper cover plate, the plane size of the first liquid absorbing core is equivalent to the area of a heat source, the first liquid absorbing core is arranged in the third area of the concave surface of the lower cover plate, the temperature of an evaporation end is high, the evaporation rate is high, enough water can be stored by adopting the first liquid absorbing core with high porosity and.
(4) The thickness of the second liquid absorbing core is equal to the total thickness of the upper cavity and the lower cavity of the vapor chamber, the upper surface of the second liquid absorbing core is attached to the lower surface of the upper cover plate, the lower surface of the second liquid absorbing core is attached to the upper surface of the lower cover plate, the second liquid absorbing core extends from the evaporation end to the condensation end of the vapor chamber in length, and the thickness of the cross section of the second liquid absorbing core is larger than that of the first liquid absorbing core, so that sufficient capillary force is.
(5) The surface roughening treatment is carried out on the first area of the lower cover plate, the surface roughening treatment process is simple, the cost is low, the problem of insufficient capillary force is solved, materials can be saved, and the soaking plate is lighter and thinner as a whole.
(6) The upper cover plate and the lower cover plate are combined into a whole in a diffusion welding mode, the peripheries of the outer sides of the upper cover plate and the lower cover plate are connected in a welding mode, the second supporting column of the second area of the upper cover plate and the third supporting column of the fourth area of the lower cover plate are combined into a whole in a welding mode, the whole soaking plate is effectively connected everywhere, and the soaking plate has better structural strength and compressive and tensile capabilities.
Drawings
Fig. 1 is an exploded view of a large planar vapor chamber of a composite wick according to the present invention.
Fig. 2 is a schematic view of the relative positions of the vapor chamber wick and lower cover plate of the present invention.
Fig. 3 is a schematic cross-sectional view of vapor channels of the vapor chamber of the present invention.
FIG. 4 is a schematic view of diffusion bonding of the vapor chamber of the present invention.
Description of reference numerals: 1-upper cover plate; 2-lower cover plate; 3-sealing the working medium cavity; 11-a first region; 12-a second region; 21-a third region; 22-a fourth region; 41-a first support column; 42-a second support column; 43-third support column; 51-first liquid-absorbing core; 52-a second wick; i, a first-stage steam channel; II-secondary steam channel.
Detailed Description
The following detailed description of the embodiments of the invention refers to the accompanying drawings.
Example 1
A large-plane vapor chamber of a composite liquid absorption core comprises an upper cover plate 1 and a lower cover plate 2 which are connected in a sealing way at the periphery to form a sealed working medium cavity 3, wherein the sealed working medium cavity 3 is in a vacuum state and is filled with a liquid working medium, the upper cover plate 1 is provided with a first area 11 and a second area 12, the first area 11 is close to an evaporation end and is provided with a plurality of first support columns 41 which are densely arranged, the second area 12 is provided with a plurality of second support columns 42 which are sparsely arranged, and second liquid absorption cores 52 are arranged in gaps among the second support columns 42;
the lower cover plate 2 is provided with a third area 21 and a fourth area 22, wherein the third area 21 is corresponding to the first area 11 in size and is used for placing the first liquid absorbing core 51; the size of the fourth region 22 corresponds to that of the second region 12, and third support columns 43 which are sparsely arranged are arranged, and the number and the arrangement mode of the third support columns 43 correspond to those of the second support columns 42.
The upper surface of the first liquid absorbing core 51 is attached to the first supporting column 41, the lower surface of the first liquid absorbing core is attached to the concave surface of the lower cover plate 2, the thickness of the first liquid absorbing core is equal to the thickness of the concave surface of the lower cover plate 2, the size of the first liquid absorbing core is equal to the area of a heat source, and the thickness of the first liquid absorbing core 51 is 0.07 mm. The evaporation end has high temperature and high evaporation rate, and the foam copper wick with high porosity and strong capillary force can store enough water to prevent the evaporation end from being burnt out.
The first liquid absorbing core 51 is overlapped with the second liquid absorbing core 52 through a plurality of small grooves arranged at the boundary to form a composite liquid absorbing core, and hydrophilic treatment is carried out on the composite liquid absorbing core, such as magnetron sputtering titanium dioxide plating, thermal oxidation method or plasma cleaning, and the like, so as to enhance the hydrophilicity of copper foam or copper wires, and in the embodiment, the hydrophilic treatment is carried out by adopting the method of magnetron sputtering titanium dioxide plating.
And the third area 21 is subjected to surface roughening treatment, and the surface of the third area is roughened by adopting a nanosecond laser processing device to form a continuous capillary structure with a hairy shape. The treatment process of surface coarsening is simple, the cost is low, the problem of insufficient capillary force is solved, meanwhile, materials can be saved, and the soaking plate is lighter and thinner as a whole.
The wall materials of the upper cover plate 1 and the lower cover plate 2 are stainless steel-nickel-copper three-layer composite materials formed by plating nickel and then plating copper on the upper cover plate 1, the wall thickness of the upper cover plate 1 is 0.13mm, and a concave surface with a plurality of regularly arranged support columns is etched on the lower surface of the upper cover plate 1 in a chemical corrosion mode to be used as a steam cavity; the wall thickness of the lower cover plate 2 is 0.12mm, a planar copper foam liquid absorption core is placed in a third area 21 of the lower cover plate, which is positioned at the evaporation end, a fourth area 22 outside the evaporation end is correspondingly consistent with the second area 12, and a plurality of copper wire liquid absorption cores are placed in gaps among the supporting columns. The stainless steel can guarantee the plate body intensity, and copper-plated homogeneity and fastness have been guaranteed to middle nickel coating, and the hydrophilicity of wall has been guaranteed to the most inboard copper plating.
The outer peripheries of the upper cover plate 1 and the lower cover plate 2 are combined into a whole in a diffusion welding mode, and the second supporting columns 42 and the third supporting columns 43 are combined into a whole in a welding mode. The whole of the soaking plate is effectively connected everywhere, and the soaking plate has better structural strength and compressive and tensile capabilities.
Example 2
A large-plane vapor chamber of a composite liquid absorption core comprises an upper cover plate 1 and a lower cover plate 2 which are connected in a sealing way at the periphery to form a sealed working medium cavity 3, wherein the sealed working medium cavity 3 is in a vacuum state and is filled with a liquid working medium, the upper cover plate 1 is provided with a first area 11 and a second area 12, the first area 11 is close to an evaporation end and is provided with a plurality of first support columns 41 which are densely arranged, the second area 12 is provided with a plurality of second support columns 42 which are sparsely arranged, and second liquid absorption cores 52 are arranged in gaps among the second support columns 42;
the lower cover plate 2 is provided with a third area 21 and a fourth area 22, wherein the third area 21 is corresponding to the first area 11 in size and is used for placing the first liquid absorbing core 51; the size of the fourth region 22 corresponds to that of the second region 12, and third support columns 43 which are sparsely arranged are arranged, and the number and the arrangement mode of the third support columns 43 correspond to those of the second support columns 42.
The upper surface of the first liquid absorbing core 51 is attached to the first supporting column 41, the lower surface of the first liquid absorbing core is attached to the concave surface of the lower cover plate 2, the thickness of the first liquid absorbing core is equal to the thickness of the concave surface of the lower cover plate 2, the size of the plane of the first liquid absorbing core is equal to the area of a heat source, and the thickness of the first liquid absorbing core 51 is 0.08 mm.
The first liquid absorbing core 51 is overlapped with the second liquid absorbing core 52 through a plurality of small grooves arranged at the boundary to form a composite liquid absorbing core, and hydrophilic treatment is carried out on the composite liquid absorbing core, such as magnetron sputtering titanium dioxide plating, a thermal oxidation method or plasma cleaning, and the like, so that the hydrophilicity of foam copper or copper wires and the like is enhanced, and in the embodiment, the hydrophilic treatment is carried out by adopting a plasma cleaning method.
The third region 21 is subjected to surface roughening treatment, and the surface thereof is chemically etched to construct a hydrophilic porous structure on the surface thereof.
The wall materials of the upper cover plate 1 and the lower cover plate 2 are titanium-nickel-copper three-layer composite materials formed by nickel plating and copper plating of a titanium material, the wall thickness of the upper cover plate 1 is 0.2mm, and a concave surface with a plurality of regularly arranged support columns is etched on the lower surface of the upper cover plate 1 in a chemical corrosion mode to be used as a steam cavity; the wall thickness of the lower cover plate is 0.15 mm.
The outer peripheries of the upper cover plate 1 and the lower cover plate 2 are combined into a whole in a diffusion welding mode, and the second supporting columns 42 and the third supporting columns 43 are combined into a whole in a welding mode. The whole of the soaking plate is effectively connected everywhere, and the soaking plate has better structural strength and compressive and tensile capabilities.
The steam passage of this application comprises one-level steam passage I and second grade steam passage II. The first-stage steam channel I comprises a first area 11 of an upper cover plate of the evaporation area and a third area 21 of a lower cover plate 2; the secondary steam channel ii comprises the second region 12 of the upper cover plate 1 and the fourth region 22 of the lower cover plate 2. After the vapor is evaporated on the surface of the first liquid absorbing core 51, the vapor passes through the primary vapor channel I with the supporting columns on the upper part and then flows to the secondary vapor channel II around the second liquid absorbing core. On the flow path, the thickness section of the steam cavity is changed from small to large, the thickness of the steam cavity is increased, the heat transfer resistance of the steam cavity can be effectively reduced, and good heat transfer performance is realized.
Inside the vapor chamber, the liquid working medium exists in the composite liquid absorption core. When the heat source works, the liquid working medium in the first liquid absorbing core 51 is heated and evaporated to form steam, the steam passes through the first-stage steam channel I and the second-stage steam channel II along the channels between the supporting columns respectively, and heat is diffused to the far end of the heat source. The liquid working medium formed after the vapor condensation flows back to the heat source position by the capillary force of the second wick 52, and the circulation is continued. The ultra-thin soaking plate can effectively solve the heat dissipation problem of the electronic element with high heat flux density in a narrow space by utilizing the phase change heat transfer principle.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the principles of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. The large-plane vapor chamber of the composite liquid absorption core comprises an upper cover plate (1) and a lower cover plate (2) which are connected in a sealing mode at the periphery to form a sealing working medium cavity (3), wherein the sealing working medium cavity (3) is in a vacuum state and is filled with a liquid working medium, and the large-plane vapor chamber is characterized in that the upper cover plate (1) is provided with a first area (11) and a second area (12), the first area (11) is close to an evaporation end and is provided with a plurality of densely-arranged first supporting columns (41), the second area (12) is provided with a plurality of sparsely-arranged second supporting columns (42), and a second liquid absorption core (52) is placed in a gap between the second supporting columns (42);
the lower cover plate (2) is provided with a third area (21) and a fourth area (22), wherein the third area (21) corresponds to the first area (11) in size and is used for placing a first liquid absorbing core (51); the size of the fourth area (22) corresponds to that of the second area (12), third support columns (43) which are sparsely arranged are arranged, and the number and the arrangement mode of the third support columns (43) correspond to those of the second support columns (42).
2. Large planar vapor chamber of composite wick according to claim 1, characterized by the fact that the first wick (51) is a wick of sintered or metal fiber type capillary structure, the second wick (52) is a wick of linear or elongated metal fiber or sintered type capillary structure, the second wick (52) is overlapped with the first wick (51) at the border, ensuring good contact.
3. A large planar vapor chamber for a composite wick according to claim 1 wherein the first wick (51) has an upper surface attached to the first support posts (41) and a lower surface attached to the concave surface of the lower cover plate (2), and has a thickness equal to the thickness of the concave surface of the lower cover plate (2) and a size comparable to the area of the heat source.
4. Large planar vapor chamber of composite wick according to claim 1, characterized by the fact that the upper surface of the second wick (52) is attached to the lower surface of the upper cover plate (1) and the lower surface is attached to the upper surface of the lower cover plate (2), the thickness of the second wick (52) being equal to the total thickness of the sealed working medium chamber (3).
5. A large planar vapor chamber of composite wick according to claim 1 wherein the second wick (52) extends from the evaporation end to the condensation end of the vapor chamber and has a cross-sectional thickness greater than the first wick (51).
6. Large planar vapor chamber of composite wick according to claim 1, characterized in that the third area (21) is surface roughened, with a continuous capillary structure with hairy topography on the surface by physical means including nanosecond laser machining; or corroding the surface of the porous material by using a chemical or electrochemical method to form a hydrophilic porous structure; or the surface of the substrate is roughened by a thermal oxidation method.
7. The large-plane vapor chamber of composite wick according to claim 1, wherein the wall material of the upper cover plate (1) and the lower cover plate (2) is high-strength light material comprising copper, stainless steel, titanium or titanium alloy, aluminum or aluminum alloy, magnesium or magnesium alloy, when the wall material is stainless steel, titanium or titanium alloy, the inner walls of the upper cover plate (1) and the lower cover plate (2) are respectively plated with a second material layer and a third material layer to form the composite wall material, wherein the second material layer is nickel plating, titanium plating, zinc plating or chromium plating, and the third material layer is copper plating.
8. Large planar vapor chamber of a composite wick according to claim 1, characterized in that the wall thickness of the upper cover plate (1) and the lower cover plate (2) is 0.1-0.3mm, the lower surface of the upper cover plate (1) being etched with a concave surface with a number of regularly arranged support columns as vapor chambers.
9. Large planar vapor chamber of composite wick according to claim 2, characterized by the fact that the first wick (51) is overlapped with the second wick (52) by several small grooves placed at the border to form the composite wick and that the composite wick is subjected to a hydrophilic treatment.
10. Large planar vapor chamber of composite wick according to claim 1, characterized by the fact that the outer perimeter of the upper cover plate (1) and the lower cover plate (2) are integrated by means of diffusion welding, the second support columns (42) and the third support columns (43) being integrated by means of welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847673.6A CN111780603A (en) | 2020-08-21 | 2020-08-21 | Large-plane vapor chamber with composite liquid absorption cores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847673.6A CN111780603A (en) | 2020-08-21 | 2020-08-21 | Large-plane vapor chamber with composite liquid absorption cores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111780603A true CN111780603A (en) | 2020-10-16 |
Family
ID=72762940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010847673.6A Pending CN111780603A (en) | 2020-08-21 | 2020-08-21 | Large-plane vapor chamber with composite liquid absorption cores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111780603A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857112A (en) * | 2021-01-29 | 2021-05-28 | 昆明理工大学 | Fiber capillary copper foam composite liquid absorption core flat micro heat pipe and preparation method thereof |
| CN115528532A (en) * | 2022-09-16 | 2022-12-27 | 深圳市佑明光电有限公司 | Combined white light laser light source module based on diode and fluorescent powder film |
| EP4253891A1 (en) * | 2022-03-28 | 2023-10-04 | Mediatek Inc. | Semiconductor package with vapor chamber lid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1703142A (en) * | 2005-06-27 | 2005-11-30 | 中山大学 | Highly effective flat-type loop heat-pipe apparatus |
| CN107624020A (en) * | 2017-08-29 | 2018-01-23 | 苏州天脉导热科技有限公司 | Ultra-thin soaking plate |
| CN110530184A (en) * | 2019-08-16 | 2019-12-03 | 江苏科技大学 | The temperature-uniforming plate and its manufacturing method that aluminum bronze combines |
| CN111194160A (en) * | 2020-02-24 | 2020-05-22 | 北京中石伟业科技无锡有限公司 | Ultra-thin asymmetric soaking plate based on foamy copper |
| CN212645463U (en) * | 2020-08-21 | 2021-03-02 | 北京中石伟业科技无锡有限公司 | Large-plane vapor chamber with composite liquid absorption cores |
-
2020
- 2020-08-21 CN CN202010847673.6A patent/CN111780603A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1703142A (en) * | 2005-06-27 | 2005-11-30 | 中山大学 | Highly effective flat-type loop heat-pipe apparatus |
| CN107624020A (en) * | 2017-08-29 | 2018-01-23 | 苏州天脉导热科技有限公司 | Ultra-thin soaking plate |
| CN110530184A (en) * | 2019-08-16 | 2019-12-03 | 江苏科技大学 | The temperature-uniforming plate and its manufacturing method that aluminum bronze combines |
| CN111194160A (en) * | 2020-02-24 | 2020-05-22 | 北京中石伟业科技无锡有限公司 | Ultra-thin asymmetric soaking plate based on foamy copper |
| CN212645463U (en) * | 2020-08-21 | 2021-03-02 | 北京中石伟业科技无锡有限公司 | Large-plane vapor chamber with composite liquid absorption cores |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857112A (en) * | 2021-01-29 | 2021-05-28 | 昆明理工大学 | Fiber capillary copper foam composite liquid absorption core flat micro heat pipe and preparation method thereof |
| EP4253891A1 (en) * | 2022-03-28 | 2023-10-04 | Mediatek Inc. | Semiconductor package with vapor chamber lid |
| CN115528532A (en) * | 2022-09-16 | 2022-12-27 | 深圳市佑明光电有限公司 | Combined white light laser light source module based on diode and fluorescent powder film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111780603A (en) | Large-plane vapor chamber with composite liquid absorption cores | |
| CN111829380A (en) | High-strength light ultrathin soaking plate | |
| US20090090875A1 (en) | Higher pressure, modular target system for radioisotope production | |
| CN212645463U (en) | Large-plane vapor chamber with composite liquid absorption cores | |
| WO2021109175A1 (en) | Thin temperature-equalizing plate | |
| CN212658107U (en) | High-strength light ultrathin soaking plate | |
| CN111194160A (en) | Ultra-thin asymmetric soaking plate based on foamy copper | |
| CN111637772A (en) | Ultra-thin vapor chamber with symmetrical structure | |
| TW201102454A (en) | Vapor deposition head and film forming device | |
| CN111536817A (en) | Ultra-thin vapor chamber of gas-liquid channel separation | |
| US8202629B2 (en) | Cladding tubes made of ferritic/martensitic or austenitic steel for nuclear fuel elements/fuels and method for subsequently treating a FeCrA protective layer thereon that is suited for high temperatures | |
| CN104613796A (en) | Micro heat exchanger with vacuum heat insulation function | |
| CN117355096A (en) | Soaking plate and preparation method thereof | |
| CN211429838U (en) | Tailless temperature equalizing plate | |
| CN215491239U (en) | Temperature equalizing plate | |
| US11486651B2 (en) | Vapor chamber | |
| CN212658106U (en) | Ultra-thin vapor chamber of gas-liquid channel separation | |
| CN213208735U (en) | Ultra-thin vapor chamber with symmetrical structure | |
| CN116147391A (en) | Ultra-thin samming board | |
| CN211860889U (en) | Ultra-thin asymmetric soaking plate based on foamy copper | |
| RU2006135586A (en) | ENCLOSURE OF THE HEAT FUEL REACTOR ELEMENT ON FAST NEUTRONS WITH A LIQUID METAL HEATER | |
| CN103050869A (en) | Micro-pore cooling mirror with mirror surface of non-equal thickness | |
| CN108806806B (en) | Nuclear reactor pressure vessel provided with unit combined type netted hollow plate shell | |
| CN219454785U (en) | Ultra-thin samming board | |
| JPH0889417A (en) | Frying pan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20241012 Address after: 214135 199 Jinghui East Road, Xinwu District, Wuxi City, Jiangsu Province Applicant after: JONES TECH (WU XI) PLC Country or region after: China Applicant after: JONES TECH PLC Applicant after: Beijing Zhongshi Weiye technology Yixing Co.,Ltd. Address before: 214135 199 Jinghui East Road, Xinwu District, Wuxi City, Jiangsu Province Applicant before: JONES TECH (WU XI) PLC Country or region before: China Applicant before: JONES TECH PLC Applicant before: Beijing Zhongshi Weiye technology Yixing Co.,Ltd. Applicant before: Wuxi Zhongshi Kuluojie Technology Co.,Ltd. |