CN211823991U - Heat conductor with three-dimensional grid channels inside - Google Patents
Heat conductor with three-dimensional grid channels inside Download PDFInfo
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- CN211823991U CN211823991U CN201921735141.2U CN201921735141U CN211823991U CN 211823991 U CN211823991 U CN 211823991U CN 201921735141 U CN201921735141 U CN 201921735141U CN 211823991 U CN211823991 U CN 211823991U
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Abstract
The utility model provides a heat conductor with three-dimensional grid channels inside, which comprises a shell, a liquid absorption core and heat conducting liquid; the shell is made of a material with a compact structure, wraps the whole liquid suction core and is used for forming a closed space; the liquid absorption core is made of porous materials, is wrapped and tightly attached to the shell, and is sealed after being filled with a proper amount of heat conduction liquid after being vacuumized, so that the interior of the shell is negative pressure; the porous structure of the liquid absorption core forms a three-dimensional grid liquid channel with a capillary action, and the heat conduction liquid circulates in the three-dimensional grid liquid channel through the capillary action; the liquid absorption core is internally provided with a plurality of gas channels, the gas channels extend towards two or more directions to form two-dimensional or three-dimensional grid gas channels which are mutually communicated, and the gas which is used as heat conduction liquid after vaporization is distributed in the liquid absorption core and circulates in the grid gas channels.
Description
Technical Field
The utility model relates to a heat conductor.
Background
Nowadays, various fields such as petrochemical industry, building materials, metallurgy and power relate to high-temperature operation, plates with good thermal conductivity are used in the equipment, the density of heat energy generated by the energy consumption equipment is continuously increased, and the guide plate can quickly transfer the heat out through the guide plate and reduce the temperature through the condensing equipment; many devices in these fields have a heat accumulation area, and the existing heat conducting plate is difficult to rapidly conduct the heat in the area to the whole plate so as to carry out heat dissipation in the next step, so that the temperature of the device at the position is sharply increased, the service life of the device is shortened, and the device is even directly burnt out.
Limited by the metal heat conduction ability, the heat far end can not be conducted to the far end fast, so not increase the heat-conducting plate area and can solve this problem, in addition, the board or other forms that current heat-conducting material made all have following problems: the thinner the wall thickness is, the better the heat transfer effect is, but the pressure resistance is poor; the thicker the wall thickness is, the better the pressure resistance is, but the heat transfer effect is poor; so that the problem is not solved by simply reducing the thickness of the material; if equipment with pressure resistance and good heat dissipation needs to be designed, the thickness of the material needs to be balanced well, materials with different thicknesses are set for different pressures, the calculation process is complicated, the applicability is poor, for example, different pressure at different positions of the same equipment is different, different plates are distributed according to the positions without stopping, the design is complicated, the connection is troublesome, and the joint of the two parts also has the risk of breakage; if the maximum pressure setting is set, the heat dissipation performance is reduced undoubtedly, and energy waste is caused.
The heat pipe is a device for conducting heat at present, and its auxiliary assembly conducts heat, but inside single channel only, and the heat conduction direction is single, and need install on the equipment that needs heat conduction, occupation space, and equipment area also is the focus of producer's cost consideration, can't accomplish to cover completely on equipment in addition and conduct heat.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above-mentioned defect, provide a heat conductor that quick heat conduction and crushing resistance are good.
The utility model adopts the following technical scheme:
a heat conductor with three-dimensional grid channels inside comprises a shell, a liquid absorption core and heat conducting liquid; the shell is made of a material with a compact structure, wraps the whole liquid suction core and is used for forming a closed space; the liquid absorption core is made of porous materials, is wrapped and tightly attached to the shell, and is sealed after being filled with a proper amount of heat conduction liquid after being vacuumized, so that the interior of the shell is negative pressure; the porous structure of the liquid absorption core forms a three-dimensional grid liquid channel with a capillary action, and the heat conduction liquid circulates in the three-dimensional grid liquid channel through the capillary action; a plurality of gas channels are distributed in the liquid absorption core, extend towards two or more directions, form two-dimensional or three-dimensional grid gas channels which are mutually communicated, are distributed in the liquid absorption core, and are used as the gas after the heat conduction liquid is vaporized to circulate in the grid gas channels; the pore size of the liquid channel is substantially smaller than the pore size of the gas channel; the injection quantity of the heat-conducting liquid is proper and does not exceed the total volume of the liquid channel with small aperture; since the liquid channel has a capillary force, the liquid is adsorbed in the liquid channel, and the gas is pushed out in the gas channel.
The utility model rapidly transfers the heat of the heating object out of the heat source through the vaporized liquid, namely, the heat transfer principle of the heat pipe, and the heat transfer capacity of the utility model exceeds the heat transfer capacity of any known metal; the gas channels are three-dimensional grid channels which are mutually communicated and distributed in the liquid absorption core, and can be quickly conducted to each position of the heat conductor no matter which region of the heat conduction plate is heated, so that the radiating area is increased; in addition, the liquid absorbing core material has a strong supporting effect on the shell, and the pressure resistance in the thickness direction is high, so that the shell material can only play a sealing role without playing a supporting effect of structural strength, and the shell can be made thinner, and the heat transfer effect is better.
Preferably, the gas channels are uniformly distributed in the wick; no matter which region of the heat conductor is heated, steam is conducted to each position of the heat conductor more uniformly, and the temperature of each position of the heat conductor is balanced more quickly.
Preferably, the aperture of the gas channel is selected within the range of 0.05-5 mm.
Preferably, the aperture of the liquid channel is selected within the range of 0.01-50um, and the aperture of the gas channel is more than one time larger than the aperture of the liquid channel.
Preferably, the shell is made of metal materials such as copper, aluminum or stainless steel, and the materials have good heat conductivity, so that the whole heat conduction effect is better.
Preferably, the porous wick is a spongy porous material made of plastic, rubber, metal or ceramic; or the porous wick is a gel material; or the porous liquid absorption core is a porous material formed by sintering or bonding short fibers; or the porous wick is a sintered porous material.
Preferably, the sintered porous material is formed by sintering copper powder, aluminum powder or ceramic powder.
Preferably, the heat conducting liquid is water, ethanol or freon.
A method of making a thermal conductor having three-dimensional grid channels, comprising the steps of:
firstly, building a two-dimensional or three-dimensional grid framework as a gas channel;
secondly, completing the manufacture of the porous liquid absorption core in the gap of the two-dimensional or three-dimensional grid framework;
removing the grid frame inside the porous liquid absorption core to form a gas channel;
fourthly, a shell is manufactured on the outer surface of the liquid absorption core, and proper heat conduction liquid is injected into the shell after the interior of the shell is vacuumized and then sealed.
A method of making a thermal conductor having three-dimensional grid channels, comprising the steps of:
firstly, building a two-dimensional or three-dimensional grid frame by using iron wires;
secondly, filling the gaps of a two-dimensional or three-dimensional grid frame formed by iron wires with strong acid resistant materials, and manufacturing a porous liquid absorption core;
thirdly, corroding the iron wire frame by using strong acid, and cleaning to form a porous liquid absorption core with a three-dimensional grid gas channel inside;
fourthly, a shell is manufactured on the outer surface of the liquid absorption core, and proper heat conduction liquid is injected into the shell after the interior of the shell is vacuumized and then sealed.
A method of making a thermally conductive body having three-dimensional lattice channels therein, comprising the steps of:
firstly, manufacturing a sponge network frame by using plastics;
secondly, filling powder into the sponge gap to form a core blank;
thirdly, coating a coating with a melting point lower than that of the filling powder on the outer surface of the core blank to prepare a heat conductor blank;
heating the heat conductor blank gradually, firstly burning off a sponge network frame made of plastics to form a gas channel, then heating to the temperature for melting the outer layer and sintering the inner layer, and cooling after heat preservation and sintering for a period of time to form a material with porous inner part and compact outer surface;
fifthly, forming small holes on the surface layer, vacuumizing, injecting a proper amount of heat-conducting liquid, and sealing.
The shell is a compact shell formed by coating a compact sheet material on the porous liquid absorption core, or coating a flowing coating on the porous liquid absorption core and solidifying, or a compact body formed by melting or blocking the surface layer of the porous liquid absorption core.
Compared with the prior art, the utility model discloses a material has three advantage: firstly, the heat conduction is fast; secondly, the heat conduction area is large; thirdly, the shell is thin and has good pressure resistance; the specific description is as follows:
firstly, the utility model discloses the material of making make full use of heat-conduction principle and phase change medium's quick heat transfer nature, outside the heat that will generate heat the object rapidly transmits the heat source through the vaporization liquid, its heat conductivility surpassed the heat conductivility of any known metal.
Two, the utility model discloses inside gas passage for three-dimensional net passageway of intercommunication each other, distribute in inside the imbibition core, no matter which region of heat conductor is heated, each position of heat conductor has been increased to the homoenergetic conduct fast, but the radiating area has been increased.
Thirdly, because the utility model discloses a wicking material is hugged closely in the casing parcel, and wicking material is covered with inside, the integrative structure that contains many gas passage of casing again, so the wicking material has very strong supporting role to the casing, and is withstand voltage big in the thickness direction, has leaded to the supporting role that shell material can not play structural strength, only plays sealed effect, therefore the casing can be made thinner, has leaded to the heat transfer effect better.
Drawings
Fig. 1 is a cross-sectional view of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of the second embodiment of the present invention.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the following description is made with reference to the accompanying drawings and embodiments to further explain the present invention:
the first embodiment is as follows:
a heat conductor with three-dimensional grid channels inside is shown in figure 1 and comprises a shell 1 and a wick 2.
The case 1 is made of aluminum having good thermal conductivity.
The liquid absorption core 2 is wrapped and tightly attached in the shell 1, the shell 1 is vacuumized and then is filled with heat conduction liquid to be sealed, and the interior of the shell 1 is made to be negative pressure.
The liquid absorption core 2 is a sintered nonmetal hydrophilic porous liquid absorption core, ceramic powder of the porous metal liquid absorption core is sintered, a plurality of liquid channels (not shown in the figure) with capillary action are formed by a sintered porous structure, and heat conduction liquid flows in the plurality of liquid channels through the capillary action;
the aperture diameter of the liquid channel is 50 um.
A plurality of gas channels 21 are distributed in the liquid absorption core 2; the plurality of gas channels 21 extend in two or more directions to form three-dimensional grid channels which are communicated with each other, are uniformly distributed in the liquid absorption core, and limit the gas vaporized by the heat-conducting liquid to circulate in the plurality of gas channels 21.
The section of the gas channel 21 is circular, and the aperture is 5 mm;
the heat conducting liquid is Freon.
Example two:
a heat conductor with three-dimensional grid channels inside is shown in figure 2 and comprises a shell 1 and a wick 2.
The case 1 is made of copper having good thermal conductivity.
The liquid absorption core 2 is wrapped and tightly attached in the shell 1, the shell 1 is vacuumized and then is filled with heat conduction liquid to be sealed, and the interior of the shell 1 is made to be negative pressure.
The liquid absorbing core 2 is a sintered porous metal liquid absorbing core, the metal of the sintered porous metal liquid absorbing core is copper powder or aluminum powder, a plurality of liquid channels (not shown in the figure) with capillary action are formed by the sintered porous structure of the liquid absorbing core, and the heat conducting liquid circulates in the plurality of liquid channels through the capillary action;
the aperture of the liquid channel is 0.01 um.
The plurality of gas channels 21 extend in two or more directions to form three-dimensional grid channels communicated with each other, are irregularly distributed in the liquid absorption core, and limit the gas vaporized by the heat-conducting liquid to circulate in the plurality of gas channels 21.
The section of the gas channel 21 is circular, and the aperture is 0.05 mm.
The heat-conducting liquid is pure water.
The manufacturing process of the heat conductor with the three-dimensional grid channels inside comprises the following steps:
firstly, building a three-dimensional grid frame.
And secondly, finishing the manufacture of the porous liquid absorption core on the basis of the three-dimensional grid framework.
And thirdly, removing the three-dimensional grid frame in the porous liquid absorption core.
Fourthly, a shell is manufactured on the outer surface of the liquid absorption core, and proper heat conduction liquid is injected into the shell after the interior of the shell is vacuumized and then sealed.
Example three:
the method comprises the following steps of (1) manufacturing a stainless steel three-dimensional grid channel:
firstly, a plurality of iron wires are pre-built in a sintering furnace to form a two-dimensional or three-dimensional grid frame.
And secondly, sintering the stainless steel porous liquid absorption core material with the iron wire inside on the basis of a two-dimensional or three-dimensional grid frame consisting of the iron wire by adopting the existing mode of manufacturing the liquid absorption core by using the stainless steel powder.
And thirdly, putting the sintered stainless steel porous liquid absorption core material into strong acid, dissolving iron wires in the sintered stainless steel porous liquid absorption core material by using the strong acid to form three-dimensional gas channels, and cleaning to form the liquid absorption core with three-dimensional grid channels in the sintered stainless steel porous liquid absorption core material.
And fourthly, wrapping a copper sheet outside the stainless steel porous liquid absorption core material, vacuumizing the interior of the copper sheet through a hole, injecting a proper amount of heat conduction liquid, and sealing to form the heat conduction material with the three-dimensional grid channel.
Example four:
the method comprises the following steps of:
firstly, when clay is made into a blank, a plurality of iron wires are pre-built in the blank to form a three-dimensional grid frame;
and secondly, sintering the ceramic porous liquid absorption core material with the iron wires inside by adopting a method for manufacturing ceramic by adopting clay.
And thirdly, putting the sintered ceramic porous liquid absorption core material into strong acid, dissolving iron wires in the ceramic porous liquid absorption core material by using the strong acid to form three-dimensional gas channels, and cleaning to form the liquid absorption core with three-dimensional grid channels in the ceramic porous liquid absorption core.
Fourthly, glaze in ceramic porous wick material outside again, pour into proper amount heat conduction liquid after with inside evacuation and seal, the glaze layer that ceramic surface covered has the utility model discloses the sealed effect of casing effect forms the heat conduction material that has three-dimensional net passageway.
Example five:
the method comprises the following steps of:
firstly, manufacturing a sponge network frame by using plastics;
secondly, filling copper powder in the sponge gap to form a core blank;
thirdly, coating a layer of brass powder with a melting point lower than that of the filling powder on the outer surface of the core blank to prepare a heat conductor blank;
heating the heat conductor blank gradually, firstly burning off a sponge network frame made of plastics to form a gas channel, then heating to the temperature for melting the outer layer and sintering the inner layer, and cooling after heat preservation and sintering for a period of time to form a material with porous inner part and compact outer surface;
fifthly, forming small holes on the surface layer, vacuumizing, injecting a proper amount of heat-conducting liquid, and sealing.
Example six:
the method comprises the following steps of:
firstly, manufacturing a sponge network frame by using plastics;
secondly, filling ceramic powder in the sponge gap to form a core blank;
thirdly, coating a layer of glaze slurry with a melting point lower than that of the filling powder on the outer surface of the core blank to prepare a heat conductor blank;
heating the heat conductor blank gradually, firstly burning off a sponge network frame made of plastics to form a gas channel, then heating to the temperature for melting the outer layer and sintering the inner layer, and cooling after heat preservation and sintering for a period of time to form a material with porous inner part and compact outer surface;
fifthly, forming small holes on the surface layer, injecting a proper amount of heat-conducting liquid after vacuumizing, and sealing to prepare the ceramic product with good heat-conducting property.
Working principle, work as the utility model discloses a when the heat conductor is installed on the equipment that generates heat, no matter which position of heat conductor is heated, the heat conduction liquid of this position can both vaporize rapidly, steam flows to each position of heat conductor through many gas passage under the power of thermal diffusion to in the cooling device condensation of installing on the heat conductor release the heat, the steam of messenger becomes heat conduction liquid again, heat conduction liquid relies on capillary action to flow back to the evaporating end that is heated along the liquid passage of imbibition core again, so incessantly circulate.
Compared with the prior art, the utility model discloses there are three advantages: firstly, the heat conduction is fast; secondly, the heat conduction area is large; thirdly, the shell is thin and has good pressure resistance; the specific description is as follows:
firstly, the utility model discloses make full use of the heat-conduction principle and the quick heat transfer nature of phase change medium, outside the heat that will generate heat the object through the vaporization liquid transmits the heat source rapidly, its heat conductivility surpassed the heat conductivility of any known metal.
Two, the utility model discloses inside gas passage for three-dimensional net passageway of intercommunication each other, distribute in inside the imbibition core, no matter which region of heat conductor is heated, each position of heat conductor has been increased to the homoenergetic conduct fast, but the radiating area has been increased.
Thirdly, because the utility model discloses a wicking material is hugged closely in the casing parcel, and wicking material is covered with inside, the integrative structure that contains many gas passage of casing again, so the wicking material has very strong supporting role to the casing, and is withstand voltage big in the thickness direction, has leaded to the supporting role that shell material can not play structural strength, only plays sealed effect, therefore the casing can be made thinner, has leaded to the heat transfer effect better.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still belong to the protection scope of the present invention.
Claims (8)
1. A heat conductor having three-dimensional lattice channels therein, comprising: comprises a shell, a liquid absorption core and heat conducting liquid;
the shell is made of a material with a compact structure, wraps the whole liquid suction core and is used for forming a closed space;
the liquid absorption core is made of porous materials, is wrapped and tightly attached to the shell, and is sealed after being filled with a proper amount of heat conduction liquid after being vacuumized, so that the interior of the shell is negative pressure;
the porous structure of the liquid absorption core forms a three-dimensional grid liquid channel with a capillary action, and the heat conduction liquid circulates in the three-dimensional grid liquid channel through the capillary action;
a plurality of gas channels are distributed in the liquid absorption core, extend towards two or more directions, form two-dimensional or three-dimensional grid gas channels which are mutually communicated, are distributed in the liquid absorption core, and are used as the gas after the heat conduction liquid is vaporized to circulate in the gas channels;
the pore diameter of the liquid channel is smaller than that of the gas channel, and the pore diameter of the gas channel is more than twice larger than that of the liquid channel.
2. A heat conductor having three-dimensional lattice channels therein as claimed in claim 1, wherein: the gas channels are uniformly distributed in the liquid absorbing core.
3. A heat conductor having three-dimensional lattice channels therein as claimed in claim 1, wherein: the aperture of the gas channel is selected within the range of 0.05-5 mm.
4. A heat conductor having three-dimensional lattice channels therein as claimed in claim 1, wherein: the pore size of the liquid channel is selected within the range of 0.01-50 um.
5. A heat-conductive body having three-dimensional lattice channels therein as claimed in any one of claims 1 to 4, wherein: the shell is made of copper, aluminum or stainless steel metal materials.
6. A heat-conductive body having three-dimensional lattice channels therein as claimed in any one of claims 1 to 4, wherein:
the liquid absorption core is a spongy porous material made of plastics, rubber, metal or ceramics;
or the liquid absorption core is made of gel material;
or the liquid absorption core is a porous material formed by sintering or bonding short fibers;
or the wick is a sintered porous material.
7. A heat conductor having three-dimensional lattice channels therein as claimed in claim 6, wherein: the sintered porous material is formed by sintering copper powder, aluminum powder or ceramic powder.
8. A heat-conductive body having three-dimensional lattice channels therein as claimed in any one of claims 1 to 4, wherein: the heat conducting liquid is water, ethanol or Freon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921735141.2U CN211823991U (en) | 2019-10-16 | 2019-10-16 | Heat conductor with three-dimensional grid channels inside |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921735141.2U CN211823991U (en) | 2019-10-16 | 2019-10-16 | Heat conductor with three-dimensional grid channels inside |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211823991U true CN211823991U (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921735141.2U Active CN211823991U (en) | 2019-10-16 | 2019-10-16 | Heat conductor with three-dimensional grid channels inside |
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| Country | Link |
|---|---|
| CN (1) | CN211823991U (en) |
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- 2019-10-16 CN CN201921735141.2U patent/CN211823991U/en active Active
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