CN105658032B - A kind of ultra-thin soaking plate and preparation method thereof - Google Patents
A kind of ultra-thin soaking plate and preparation method thereof Download PDFInfo
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- CN105658032B CN105658032B CN201610044404.XA CN201610044404A CN105658032B CN 105658032 B CN105658032 B CN 105658032B CN 201610044404 A CN201610044404 A CN 201610044404A CN 105658032 B CN105658032 B CN 105658032B
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- bottom plate
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- cover board
- metallic particles
- structure layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
Abstract
The invention discloses a kind of ultra-thin soaking plates and preparation method thereof, including cover board and bottom plate, cavity is equipped on the inner surface of bottom plate, make to form the cavity for being in vacuum state between cover board and bottom plate, it is equipped with the wick structure being attached on cavity bottom surface in the cavities, wick structure for connecting cover plate and bottom plate and as first capillary structure layer in heat therebetween and working-fluid flow channel and the second capillary structure layer for working-fluid flow diffusion by forming, first capillary structure layer is made of several spheroidal metallic particles being dispersed in bottom plate cavity, the diameter of metallic particles and the height of cavity are identical, second capillary structure layer is bigger serface gap shape structure, and there is the gap flowed for gas between cover board, metallic particles is embedded in the second capillary structure layer and integral with cover board and bottom plate welding.Present invention decreases the thickness of soaking plate, flexible deformation, radiating efficiency height, simplify manufacturing process, low in cost, suitable for mass production.
Description
Technical field
The present invention relates to a kind of soaking plate more particularly to a kind of ultra-thin soaking plates, further relate to the production of the ultra-thin soaking plate
Method.
Background technique
The arithmetic speed of electronic product is getting faster now, and requires the size of product as small as possible simultaneously.Especially
Smart phone, thickness is more and more thinner, constantly challenges thickness limit, this is just needed will be a large amount of in limited space in mobile phone
Heat dissipation go out.
Currently, the best material of heat transfer efficiency is the heat pipe or soaking plate of liquid phase-change heat transfer.Liquid phase-change heat transfer heat pipe
Thermal resistance it is dozens or even hundreds of times lower than the thermal resistance of metallic copper or aluminum material, be optimal radiating subassembly in current electronic product.
And soaking plate is higher than the radiating efficiency of heat pipe, therefore, soaking plate just gradually replaces heat pipe as the essential of high-end CPU and GPU
Radiating subassembly.
Existing soaking plate is a flat surface plate object, respectively has a lid (cover board and bottom plate) mutually closely sealed up and down.Soaking plate is
One inside has the vacuum cavity of fine structure, inside there is copper post support.Two plate bodys are usually with oxygen-free copper above and below soaking plate
For material, using pure water as working fluid, capillary structure is sintered with copper powder or the technique of copper mesh makes.Soaking plate is in practical application
When, be smaller than within 10 DEG C in plate temperature difference measured by two o'clock of taking up an official post, compared with heat pipe to the conducting effect of heat source more evenly, soaking
The name of plate also therefore.When soaking plate works, heat from heat source is conducted by base plate external to internal cavity, and cavity bottom surface is porous
Structure is adsorbed with working fluid, the heated vaporization of working fluid, and steam is covered with rapidly entire cavity, and the upper surface of cover board is generally pacified
Equipped with heat dispersion heat sink, heat can be dispersed into rapidly ambient enviroment by heat dispersion heat sink, and therefore, the temperature of cover board is lower than phase transition temperature,
Steam in cavity is condensed into liquid in cover inner surface cooling, flows back into cavity bottom further through the structure of connecting cover plate and bottom plate
In the porous structure in face, to complete entire circulation.
But existing soaking plate has the following deficiencies:
(1) when soaking plate works, the liquid vaporization of inside cavity causes pressure much higher than atmospheric pressure, therefore, in order to avoid
Soaking plate bulging, traditional soaking plate is equipped with special reinforcing rib connecting cover plate and bottom plate, in this way, improving manufacturing cost, no
It is suitable for mass production.
(2) the cover board of traditional soaking plate and the inner surface of bottom plate are both needed to sintered copper powder porous structure, while it is empty to retain middle part
The channel that chamber is spread as steam, in order to which connecting cover plate and bottom plate also need that special support construction is arranged, in this way, not only making
Complex process, and due to being provided with special support construction and reinforcing rib, so that soaking plate is thicker, existing soaking plate institute energy
The minimum thickness reached is 0.6mm.
(3), since existing soaking plate is thicker, the deformation if soaking plate bends can destroy wick structure therein, from
And influence heat transfer property.
Currently, the requirement highest that smart phone etc. is frivolous, High performance electronics are to thickness, therefore there is an urgent need to grind
Send out thinner, the better soaking plate of performance, however how to further decrease the thickness of soaking plate, this be this field at present urgently
Technical problem to be solved.
Summary of the invention
The first purpose of this invention is to provide that a kind of structure is simple, can greatly simplify manufacture craft, being capable of Curved
Become and do not influence high heat transfer property, radiating efficiency, low manufacture cost and ultra-thin soaking plate suitable for mass production.
The first purpose of this invention is realized by technical measures below: a kind of ultra-thin soaking plate is included in periphery
The cover board and bottom plate of sealed connection, it is characterised in that: be equipped with cavity on the inner surface of the bottom plate, make between cover board and bottom plate
The cavity for being in vacuum state is formed, the wick structure being attached on cavity bottom surface, the capillary are equipped in the cavity
Cored structure by for connecting cover plate and bottom plate and as first capillary structure layer in heat therebetween and working-fluid flow channel and
For the second capillary structure layer composition of working-fluid flow diffusion, to be dispersed in bottom plate recessed by several for first capillary structure layer
In chamber spheroidal metallic particles composition, the diameter of the metallic particles and the height of cavity it is identical so that its be supported on cover board with
Between bottom plate, second capillary structure layer is bigger serface gap shape structure, and has between cover board and be used for gas stream
Dynamic gap, the metallic particles are embedded in the second capillary structure layer and integral with cover board and bottom plate welding.
Bigger serface gap shape structure of the present invention is gap shape structure, and the structure is in the case where same volume
Surface area is the bigger the better.
The present invention uses diameter spheroidal metallic particles identical with cavity height random scatter in the cavities, passes through solid phase
Sintering, the metallic particles of spheroidal is sintered together with bottom plate and cover board, plays connecting bottom board and cover board, controls soaking plate thickness
The effect for spending simultaneously reinforcement structure, without reinforcing rib and support construction, and metallic particles ratio are specially arranged in cavity
Surface area is big, and can provide capillary force, as the channel of heat and working-fluid flow between cover board and bottom plate, so that porous
Capillary structure and support construction are combined togather, and the thickness of soaking plate can not only subtracted on the basis of existing soaking plate thickness
It is small, and manufacturing process is simplified, it is low in cost, it is suitable for mass production；The second capillary structure layer is as working fluid simultaneously
The carrier for flowing diffusion, the chamber for keeping certain interval to flow as gas between the second capillary structure layer and cover board, heat dissipation effect
Rate is high.In addition, wick structure will not be destroyed Bending Deformation due to thinner thickness of the invention, therefore, to conductivity of heat
Influence can be had no, allows the invention to be widely used in that smart phone etc. is frivolous, High performance electronics.
As one embodiment of the present invention, second capillary structure layer by it is several be dispersed in it is small in bottom plate cavity
The metallic particles of partial size forms, and the average grain diameter of the metallic particles of the small particle is less than the 1/2 of cavity height, and is in first
In gap between the metallic particles of capillary structure layer.
As a kind of preferred embodiment of the invention, the cover board is plate, translates into flanging outside the edge of the bottom plate,
The periphery of the cover board is welded on the flanging of the bottom plate with connecting cover plate and bottom plate；The metal of first capillary structure layer
The diameter of particle is 50~300 microns, preferably 80~200 microns；The average grain diameter of the small particle metallic particles be 5~
100 microns, preferably 10~50 microns；The quantity of the metallic particles of first capillary structure layer and small particle metallic particles
Ratio of number is 1/100~1/10.
As another embodiment of the invention, second capillary structure layer is described using at least one layer of metal mesh
Metal mesh is adapted with cavity and is successively laid on the cavity bottom surface of the bottom plate, the metal of first capillary structure layer
Grain is dispersed on the metal mesh of top and metal mesh is pressed on bottom plate downwards.
As an improvement of the present invention, the cover board is plate, and the edge of the bottom plate is the flanging to turn up, the lid
The periphery of plate is welded on the flanging of the bottom plate with connecting cover plate and bottom plate, and at least one is laid on the inner surface of the cover board
Layer metal mesh, the metallic particles of the first capillary structure layer are located at the lower section of the metal mesh of the bottom and metal mesh are pressed in lid upwards
On plate.
The diameter of the metallic particles of first capillary structure layer of the present invention is 50~300 microns, and preferably 80~200 is micro-
Rice；The thickness of the metal mesh is less than 0.15mm, and the aperture of metal mesh mesh is 5~100 microns, preferably 10~50 microns.
As an improvement of the present invention, the inner surface of the cavity, the first capillary structure layer and the second capillary structure layer
Surface be coated with hydrophilic coating, capillary force can be further enhanced.
The thickness of ultra-thin soaking plate of the present invention is greater than or equal to 0.2mm and is less than 0.6mm.
Second object of the present invention is to provide a kind of production method of above-mentioned ultra-thin soaking plate.
Second object of the present invention is realized by technical measures below: a kind of production side of above-mentioned ultra-thin soaking plate
Method, it is characterised in that the following steps are included:
(1) cover board and the bottom plate with cavity are made respectively, while reserved except port；
(2) by the metallic particles of the spheroidal metallic particles of the first capillary structure layer and the small particle of the second capillary structure layer
It is spread in the cavity of bottom plate after mutually mixing；
(3) cover board is fastened in the opening of bottom plate cavity and forms soaking boards half-finished product；
(4) soaking boards half-finished product is sintered, so that metallic particles, cover board and bottom plate are welded together, while spheroidal metal
Metal mesh is pressed on bottom plate by grain；
(5) the periphery of cover board and bottom plate is welded to form one with the cavity except port；
(6) by filling working fluid into cavity except port；
(7) so that cavity is in vacuum state from except the air in port extracting cavity body；
(8) block except port and ultra-thin soaking plate is made in welded seal.
Third object of the present invention is to provide the production method of another above-mentioned ultra-thin soaking plate.
Third object of the present invention is realized by technical measures below: a kind of production side of above-mentioned ultra-thin soaking plate
Method, it is characterised in that the following steps are included:
(1) cover board and the bottom plate with cavity are made respectively, while reserved except port；
(2) at least one layer of metal mesh is successively laid on the bottom surface of bottom plate cavity；
(3) the spheroidal metallic particles of the first capillary structure layer is spread on the metal mesh of top；
(4) cover board is fastened in the opening of bottom plate cavity and forms soaking boards half-finished product；
(5) soaking boards half-finished product is sintered, so that spheroidal metallic particles, metal mesh, cover board and bottom plate are welded together, together
When spheroidal metallic particles metal mesh is pressed on bottom plate；
(6) the periphery of cover board and bottom plate is welded to form one with the cavity except port；
(7) by filling working fluid into cavity except port；
(8) so that cavity is in vacuum state from except the air in port extracting cavity body；
(9) block except port and ultra-thin soaking plate is made in welded seal.
Compared with prior art, the present invention has following significant effect:
(1) the present invention uses diameter spheroidal metallic particles identical with cavity height random scatter in the cavities, by solid
The metallic particles of spheroidal is sintered together by phase sintering with bottom plate and cover board, plays connecting bottom board and cover board, controls soaking plate
The effect of thickness and reinforcement structure, without reinforcing rib and support construction, and metallic particles are specially arranged in cavity
Large specific surface area, and can provide capillary force, as the channel of heat and working-fluid flow between cover board and bottom plate, so that more
Hole capillary structure and support construction are combined togather, and the thickness of soaking plate can not only subtracted on the basis of existing soaking plate thickness
It is small, and manufacturing process is simplified, it is low in cost, it is suitable for mass production.
(2) channel of the spheroidal metallic particles as heat and working-fluid flow between cover board and bottom plate, and second mao
Carrier of the fine texture layer as working fluid flowing diffusion, keeps certain interval as gas between the second capillary structure layer and cover board
The chamber of body flowing, radiating efficiency are high.
(3) due to thinner thickness of the invention, wick structure will not be destroyed Bending Deformation, therefore, to conductivity of heat
Influence can be had no.
(4) the configuration of the present invention is simple, practical, allows the invention to be widely used in that smart phone etc. is frivolous, Gao Xing
It can electronic product.
Detailed description of the invention
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is one of the sectional structure chart of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram (opening cover board) of the embodiment of the present invention 1；
Fig. 3 is the Structure explosion diagram of the embodiment of the present invention 1；
Fig. 4 is the two of the sectional structure chart of the embodiment of the present invention 1；
Fig. 5 is the sectional structure chart of the embodiment of the present invention 2；
Fig. 6 is the sectional structure chart of the embodiment of the present invention 3.
Specific embodiment
Embodiment 1
As shown in figures 1-4, a kind of ultra-thin soaking plate is included in the cover board 1 and bottom plate 2 of periphery sealed connection, in bottom plate 2
Inner surface be equipped with cavity 21, make between cover board 1 and bottom plate 2 formed be in vacuum state cavity, in the present embodiment, lid
Plate 1 is plate, and in other embodiments, cover board 1 also can have cavity, and flanging 22 is translated into outside the edge of bottom plate 2, cover board 1
Periphery is welded on the flanging of bottom plate 2 with connecting cover plate 1 and bottom plate 2；It is equipped with the hair being attached on 21 bottom surface of cavity in the cavities
Thin cored structure, wick structure is by for connecting cover plate 1 and bottom plate 2 and as heat therebetween and working-fluid flow channel
One capillary structure layer and the second capillary structure layer composition spread for working-fluid flow, the first capillary structure layer are dissipated by several
Spheroidal metallic particles 3 of the cloth in 2 cavity 21 of bottom plate forms, the diameter of metallic particles 3 and the height of cavity it is identical so that its
It is supported between cover board 1 and bottom plate 2, the second capillary structure layer is bigger serface gap shape structure, and is had between cover board 1
For gas flowing gap, metallic particles 3 be embedded in the second capillary structure layer in and with cover board 1 and the integral structure of 2 welding of bottom plate
At ultra-thin soaking plate, the thickness of ultra-thin soaking plate is greater than or equal to 0.2mm and is less than 0.6mm.
In the present embodiment, the second capillary structure layer by several small particles being dispersed in 2 cavity 21 of bottom plate metal
Grain 4 forms, and the average grain diameter of small particle metallic particles 4 is less than the 1/2 of cavity height, and is in the metal of the first capillary structure layer
In gap between particle 3.The diameter of the metallic particles 3 of first capillary structure layer be 50~300 microns, preferably 80~200
Micron；The average grain diameter of the metallic particles 4 of small particle is 5~100 microns, preferably 10~50 microns；First capillary structure layer
The quantity of metallic particles 3 and the ratio of number of metallic particles 4 of small particle be 1/100~1/10.Cavity inner surface,
4 surface of metallic particles of the small particle of the metallic particles 3 and the second capillary structure layer of one capillary structure layer is coated with hydrophilic painting
Layer, can further enhance capillary force.
In actual use, heat source is preferably in close contact with bottom plate 2 present invention, and heat dispersion heat sink preferably closely connects with cover board 1
Touching, bottom plate 2, cover board 1 and metallic particles 3,4 are made of metal materials such as the copper, aluminium, nickel of good heat conductivity, and preferred copper product
It is made.
Referring to Fig. 1, the working principle of the invention is: when ultra-thin soaking plate works, 2 bottom surface of bottom plate is heating end, directly
It is contacted with heat source chip, cover board 1 is colling end, is contacted above with heat sink etc cooling equipment.Ultra-thin soaking plate is one
3 structure of capillary structure and metallic particles that small particle metallic particles 4 is constituted is equipped with cavity on 2 inner surface of bottom plate and in cavity
At vacuum cavity, when heat Q1 is by heat source to heating end, the working medium A on 2 inner wall of bottom plate can be in rough vacuum
There is a phenomenon where liquid phases to vaporize in environment, and working medium can carry a large amount of latent heat and rapid spatial expansion full of entire because of phase transition phenomena
Cavity generates condensation phenomenon, can release gaseous state in condensation process when becoming gaseous working medium B and touch cover board 1 to the cold
All heat Q2 that working medium carries.Liquid refrigerant C, which is formed, after working medium condensation returns evaporation heat source along 3 surface of metallic particles
Place, this circulates in the progress in the cavity of ultra-thin soaking plate in cycles.
A kind of manufacture craft of above-mentioned ultra-thin soaking plate, comprising the following steps:
(1) cover board 1 and the bottom plate 2 with cavity 21 are made respectively, while reserved except port 5；
(2) by the metallic particles of the spheroidal metallic particles 3 of the first capillary structure layer and the small particle of the second capillary structure layer
It is spread in the cavity 21 of bottom plate 2 after 4 phases are mixed, when mixing, according to the quantity and granule of the metallic particles 3 of the first capillary structure layer
The ratio of number of the metallic particles 4 of diameter is 1/100~1/10 uniformly to be mixed；
(3) cover board 1 is fastened in the opening of 2 cavity 21 of bottom plate and forms soaking boards half-finished product；
(4) soaking boards half-finished product is sintered, so that metallic particles 3,4, cover board 1 and bottom plate 2 are welded together；
(5) the periphery of cover board 1 and bottom plate 2 is welded to form one with the cavity except port 5；
(6) by filling working fluid into cavity except port 5；
(7) so that cavity is in vacuum state from except port 5 extracts the air in cavity；
(8) block except port 5 and welded seal forms ultra-thin soaking plate.
Embodiment 2
As shown in figure 5, the present embodiment difference from example 1 is that: the second capillary structure layer is different, in this implementation
In example, the second capillary structure layer uses metal mesh 6, and in the present embodiment, metal mesh 6 is one layer, and metal mesh 6 and 21 phase of cavity
Be adapted to and be laid on 21 bottom surface of cavity of bottom plate 2, the metallic particles 3 of the first capillary structure layer be dispersed on metal mesh 6 and to
It is lower to press metal mesh 6 on a base plate 2.In other embodiments, two layers or more of metal mesh can be used in the second capillary structure layer, gold
Belong to net to be adapted with cavity and be successively laid on the cavity bottom surface of bottom plate, the metallic particles of the first capillary structure layer is dispersed in most
Metal mesh is pressed on bottom plate on the metal mesh of top layer and downwards, the mesh of each metal mesh may be the same or different.Metal mesh
6 thickness is less than 0.15mm, and the aperture of 6 mesh of metal mesh is 5~100 microns, preferably 10~50 microns.
A kind of manufacture craft of above-mentioned ultra-thin soaking plate, comprising the following steps:
(1) cover board 1 and the bottom plate 2 with cavity 21 are made respectively, while reserved except port 5；
(2) one layer of metal mesh 6 is laid on the bottom surface of 2 cavity 21 of bottom plate；
(3) the spheroidal metallic particles 3 of the first capillary structure layer is spread on metal mesh 6；
(4) cover board 1 is fastened in the opening of 2 cavity 21 of bottom plate and forms soaking boards half-finished product；
(5) soaking boards half-finished product is sintered, so that spheroidal metallic particles 3, metal mesh 6, cover board 1 and 2 welding of bottom plate are one
It rises, while spheroidal metallic particles 3 presses metal mesh 6 on a base plate 2；
(6) the periphery of cover board 1 and bottom plate 2 is welded to form one with the cavity except port 5；
(7) by filling working fluid into cavity except port 5；
(8) so that cavity is in vacuum state from except port 5 extracts the air in cavity；
(9) block except port 5 and ultra-thin soaking plate is made in welded seal.
Embodiment 3
As shown in fig. 6, the present embodiment and embodiment 2 the difference is that: be also equipped with one on the inner surface of cover board 1
Layer metal mesh 7, the metallic particles 3 of the first capillary structure layer are located at the lower section of metal mesh 7 and metal mesh 7 are pressed in cover board 1 upwards
On, at this point, the metal mesh 6 on the cavity bottom surface of bottom plate 2 and the metal mesh 7 on the inner surface of cover board 1 are relatively common
Squeeze metallic particles 3.In other embodiments, two layers or more of metal mesh can be laid on the inner surface of cover board, first mao
The metallic particles of fine texture layer be located at the lower section of the metal mesh of the bottom and upwards by metal mesh pressure on the cover board.
The production method of the present embodiment and the production method of embodiment 2 the difference is that: cover board 1 is being fastened on bottom
It is formed before soaking boards half-finished product in the opening of 2 cavity 21 of plate, one layer of metal mesh 7 is also laid on the inner surface of cover board 1, be sintered
Soaking boards half-finished product, so that spheroidal metallic particles, metal mesh 6,7, cover board 1 and bottom plate 2 are welded together, while spheroidal gold
Metal mesh 6,7 is pressed respectively against on bottom plate 2 and cover board 1 by metal particles 3, welds the periphery of cover board 1 and bottom plate 2 to form one again later
With the cavity for removing port 5.
The implementation of the present invention is not limited to this, and above content according to the present invention is known according to the ordinary skill of this field
Knowledge and customary means, under the premise of not departing from above-mentioned basic fundamental thought of the invention, the second capillary structure layer of the invention, cover board
And there are also other embodiments for concrete shape of bottom plate etc.；Therefore, the present invention can also make other diversified forms modification,
Replacement or change, all fall within rights protection scope of the present invention.
Claims (8)
1. a kind of ultra-thin soaking plate is included in the cover board and bottom plate of periphery sealed connection, it is characterised in that: in the bottom plate
Surface is equipped with cavity, makes to form the cavity for being in vacuum state between cover board and bottom plate, is equipped with and is attached in the cavity
Wick structure on cavity bottom surface, the wick structure is by for connecting cover plate and bottom plate and as heat therebetween and work
First capillary structure layer of fluid flowing passage and the second capillary structure layer composition for working-fluid flow diffusion, described the
One capillary structure layer is made of several spheroidal metallic particles being randomly dispersed in bottom plate cavity, the diameter of the metallic particles
It is identical as the height of cavity so that it is supported between cover board and bottom plate, second capillary structure layer is bigger serface gap
Shape structure, and there is the gap flowed for gas between cover board, the metallic particles is embedded in the second capillary structure layer simultaneously
It is integral with cover board and bottom plate welding；Second capillary structure layer by several small particles being dispersed in bottom plate cavity metal
Particle composition, the average grain diameter of the small particle metallic particles are less than the 1/2 of cavity height, and in the first capillary structure layer
In gap between metallic particles；The cover board is plate, and flanging, the periphery weldering of the cover board are translated into outside the edge of the bottom plate
It connects on the flanging of the bottom plate with connecting cover plate and bottom plate；The diameter of the metallic particles of first capillary structure layer be 50~
300 microns；The average grain diameter of the small particle metallic particles is 5~100 microns；The metallic particles of first capillary structure layer
Quantity and the ratio of number of small particle metallic particles be 1/100~1/10.
2. ultra-thin soaking plate according to claim 1, it is characterised in that: second capillary structure layer is using at least one layer of
Metal mesh, the metal mesh are adapted with cavity and are successively laid on the cavity bottom surface of the bottom plate, the first capillary knot
The metallic particles of structure layer is dispersed on the metal mesh of top and metal mesh is pressed on bottom plate downwards.
3. ultra-thin soaking plate according to claim 2, it is characterised in that: the cover board is plate, the edge of the bottom plate
For the flanging to turn up, the periphery of the cover board is welded on the flanging of the bottom plate with connecting cover plate and bottom plate, in the cover board
Inner surface on be laid at least one layer of metal mesh, the metallic particles of the first capillary structure layer is located at the lower section of the metal mesh of the bottom
And upwards by metal mesh pressure on the cover board.
4. ultra-thin soaking plate according to claim 3, it is characterised in that: the thickness of the metal mesh is less than 0.15mm, gold
The aperture for belonging to net mesh is 5~100 microns.
5. ultra-thin soaking plate according to claim 1 or 4, it is characterised in that: the inner surface of the cavity, the first capillary knot
The surface of structure layer and the second capillary structure layer is coated with hydrophilic coating.
6. ultra-thin soaking plate according to claim 5, it is characterised in that: the thickness of the ultra-thin soaking plate is greater than or equal to
0.2mm and be less than 0.6mm.
7. a kind of production method of ultra-thin soaking plate described in claim 1, it is characterised in that the following steps are included:
(1) cover board and the bottom plate with cavity are made respectively, while reserved except port；
(2) after the small particle metallic particles of the spheroidal metallic particles of the first capillary structure layer and the second capillary structure layer mutually being mixed
It spreads in the cavity of bottom plate；
(3) cover board is fastened in the opening of bottom plate cavity and forms soaking boards half-finished product；
(4) soaking boards half-finished product is sintered, so that metallic particles, cover board and bottom plate are welded together；
(5) the periphery of cover board and bottom plate is welded to form one with the cavity except port；
(6) by filling working fluid into cavity except port；
(7) so that cavity is in vacuum state from except the air in port extracting cavity body；
(8) block except port and ultra-thin soaking plate is made in welded seal.
8. a kind of production method of ultra-thin soaking plate as claimed in claim 2, it is characterised in that the following steps are included:
(1) cover board and the bottom plate with cavity are made respectively, while reserved except port；
(2) at least one layer of metal mesh is successively laid on the bottom surface of bottom plate cavity；
(3) the spheroidal metallic particles of the first capillary structure layer is spread on the metal mesh of top；
(4) cover board is fastened in the opening of bottom plate cavity and forms soaking boards half-finished product；
(5) soaking boards half-finished product is sintered, so that spheroidal metallic particles, metal mesh, cover board and bottom plate are welded together, it is round simultaneously
Metal mesh is pressed on bottom plate by spherical metallic particles；
(6) the periphery of cover board and bottom plate is welded to form one with the cavity except port；
(7) by filling working fluid into cavity except port；
(8) so that cavity is in vacuum state from except the air in port extracting cavity body；
(9) block except port and ultra-thin soaking plate is made in welded seal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610044404.XA CN105658032B (en) | 2016-01-22 | 2016-01-22 | A kind of ultra-thin soaking plate and preparation method thereof |
| PCT/CN2016/097594 WO2017124754A1 (en) | 2016-01-22 | 2016-08-31 | Ultrathin soaking plate and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610044404.XA CN105658032B (en) | 2016-01-22 | 2016-01-22 | A kind of ultra-thin soaking plate and preparation method thereof |
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| CN105658032B true CN105658032B (en) | 2019-06-04 |
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| CN105658032B (en) * | 2016-01-22 | 2019-06-04 | 白鹏飞 | A kind of ultra-thin soaking plate and preparation method thereof |
| US10831249B2 (en) | 2017-03-02 | 2020-11-10 | Huawei Technologies Co., Ltd. | Heat conduction component and mobile terminal |
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