CN212645463U - Large-plane vapor chamber with composite liquid absorption cores - Google Patents
Large-plane vapor chamber with composite liquid absorption cores Download PDFInfo
- Publication number
- CN212645463U CN212645463U CN202021759669.6U CN202021759669U CN212645463U CN 212645463 U CN212645463 U CN 212645463U CN 202021759669 U CN202021759669 U CN 202021759669U CN 212645463 U CN212645463 U CN 212645463U
- Authority
- CN
- China
- Prior art keywords
- cover plate
- area
- wick
- vapor chamber
- support columns
- 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.)
- Active
Links
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model relates to a large-plane soaking plate of a composite liquid absorbing core, which comprises an upper cover plate and a lower cover plate, wherein the periphery 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 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 utility model belongs to the technical field of the hot plate design and manufacturing, concretely relates to big plane soaking plate of compound imbibition 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 utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, a big plane soaking plate of compound imbibition core is provided. The utility model discloses a vapor chamber adopts different imbibition core materials and structural style's compound imbibition core, and the evaporating zone and the condensation zone of cooperation vapor chamber can effectively solve the problem that the steam flow space is not enough in the big plane vapor chamber of ultra-thin type, heat transfer performance is not good and structural strength is not enough, the utility model discloses carry out the optimal design to vapor chamber imbibition core structure and bearing structure, furthest has given the steam space and has guaranteed the overall structure intensity and the temperature uniformity of vapor chamber. 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 problem, the utility model discloses a 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 utility model has the advantages of it is following:
(1) the upper cover plate and the lower cover plate of the vapor chamber of the utility model are made of high-strength light materials, such as copper, stainless steel, titanium or titanium alloy, aluminum or aluminum alloy, magnesium or magnesium alloy, etc. 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 utility model discloses the vapor chamber adopts compound imbibition core to solve the problem that big plane vapor chamber capillary force is not enough and the vapor space is not enough, and compound imbibition core comprises first imbibition core and second imbibition core, carries out hydrophilicity to compound imbibition core and handles, like magnetron sputtering plating titanium dioxide, thermal oxidation method or plasma cleaning etc. strengthen the hydrophilicity of foamy copper or copper line etc.. 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 utility model discloses the thickness of first imbibition core equals the concave surface thickness of apron down, and its lower surface and apron concave surface laminating down, the support column laminating of upper surface and upper cover plate, its plane size is equivalent with heat source area, arranges the concave surface third region of apron down in, and the evaporating end temperature is high, and evaporation rate is fast, adopts that the porosity is high, sufficient water can be saved to the first imbibition core that capillary force is strong, prevents that the evaporating end from appearing the phenomenon of burning dry.
(4) The utility model discloses second imbibition core thickness equals the gross thickness of cavity about the soaking plate, and its upper surface and upper cover plate lower surface laminating, its lower surface and lower apron upper surface laminating, second imbibition core extend to the soaking plate condensation end from the evaporating end on length, are greater than first imbibition core in the cross-sectional thickness, have guaranteed sufficient capillary force, help the quick return water of condensation end.
(5) The utility model discloses carry out the surface roughening to apron first region down and handle, the processing technology of surface roughening is simple, and low cost can also save the material when solving capillary force not enough, makes the soaking plate whole more frivolous.
(6) The utility model discloses a mode that upper and lower apron welded through the diffusion combines as an organic whole, and the peripheral welding in the outside of upper and lower apron links to each other, and the second support column of upper cover plate second region combines as an organic wholely with the third support column of apron fourth region down through the welding, and the whole department of soaking plate effectively links to each other, has better structural strength and resistance to compression tensile ability.
Drawings
Figure 1 is an exploded view of the large planar vapor chamber of the composite wick of the present invention.
Fig. 2 is a schematic diagram of the relative positions of the vapor chamber wick and the lower cover plate according to the present invention.
Fig. 3 is a schematic cross-sectional view of the vapor channel of the vapor chamber of the present invention.
Fig. 4 is a schematic view of diffusion welding 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 describes the embodiments of the present invention in detail with reference to the technical solutions (and 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 made to the above embodiments according to the utility model all still belong to the protection scope of the technical scheme of the utility model.
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 |
|---|---|---|---|
| CN202021759669.6U CN212645463U (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 |
|---|---|---|---|
| CN202021759669.6U CN212645463U (en) | 2020-08-21 | 2020-08-21 | Large-plane vapor chamber with composite liquid absorption cores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212645463U true CN212645463U (en) | 2021-03-02 |
Family
ID=74787485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021759669.6U Active CN212645463U (en) | 2020-08-21 | 2020-08-21 | Large-plane vapor chamber with composite liquid absorption cores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212645463U (en) |
-
2020
- 2020-08-21 CN CN202021759669.6U patent/CN212645463U/en active Active
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 | |
| WO2021168914A1 (en) | Temperature equalization plate radiator | |
| WO2021109175A1 (en) | Thin temperature-equalizing plate | |
| CN215261347U (en) | Temperature equalizing plate | |
| TW200926952A (en) | Vapor chamber structure with improved wick and method for manufacturing the same | |
| CN111637772A (en) | Ultra-thin vapor chamber with symmetrical structure | |
| TW201102454A (en) | Vapor deposition head and film forming device | |
| CA2691484A1 (en) | Higher pressure, modular target system for radioisotope production | |
| CN213873937U (en) | Thin type temperature-uniforming plate sprayed with graphene | |
| CN212645463U (en) | Large-plane vapor chamber with composite liquid absorption cores | |
| CN111536817A (en) | Ultra-thin vapor chamber of gas-liquid channel separation | |
| CN110763061A (en) | Vapor chamber and processing method thereof | |
| CN111194160A (en) | Ultra-thin asymmetric soaking plate based on foamy copper | |
| CN212658107U (en) | High-strength light ultrathin soaking plate | |
| CN211429838U (en) | Tailless temperature equalizing plate | |
| CN104613796A (en) | Micro heat exchanger with vacuum heat insulation function | |
| CN215491239U (en) | Temperature equalizing plate | |
| FR2820244A1 (en) | LIGHT BIPOLAR PLATE FOR FUEL CELL AND MANUFACTURING METHOD THEREOF | |
| CN112857109A (en) | Ultra-thin copper temperature-uniforming plate | |
| CN103050869B (en) | Micro-pore cooling mirror with mirror surface of non-equal thickness | |
| CN213208735U (en) | Ultra-thin vapor chamber with symmetrical structure | |
| CN212658106U (en) | Ultra-thin vapor chamber of gas-liquid channel separation | |
| CN211860889U (en) | Ultra-thin asymmetric soaking plate based on foamy copper | |
| TW201932782A (en) | Middle member of heat dissipation device and the heat dissipation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |