阅读说明：本技术 一种内部具有三维网格通道的导热体及其制作方法 (heat conductor with three-dimensional grid channels inside and manufacturing method thereof ) 是由 黄昊辰 黄朝强 钟东海 黄建城 于 2019-10-16 设计创作，主要内容包括：本发明提供一种内部具有三维网格通道的导热体,包括壳体、吸液芯、导热液体；所述壳体,由致密结构材质组成,包裹整个吸液芯,用于形成密闭的空间；所述吸液芯为多孔材料的吸液芯,所述吸液芯被包裹紧贴于壳体内,将壳体抽真空后注入适量导热液体后密封,使得壳体内为负压；所述吸液芯其多孔结构形成具有毛细作用的三维网格液体通道,导热液体通过毛细作用在三维网格液体通道中流通；所述吸液芯内部还分布众多气体通道,所述众多气体通道向两个或多个方向延伸,形成彼此互通的二维或三维网格气体通道,分布于所述吸液芯内部,作为导热液体汽化后的气体在所述网格气体通道内流通。(The invention provides a heat conductor with three-dimensional grid channels inside, which comprises a shell, a liquid absorption core and heat conducting liquid, wherein the shell is provided with a plurality of grooves; 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.)

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 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.

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 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 that of the liquid channel.

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 metal materials such as copper, aluminum or stainless steel.

6. A heat-conductive body having three-dimensional lattice channels therein as claimed in any one of claims 1 to 4, wherein: the porous liquid absorption core is a spongy porous material made of plastics, rubber, metal and ceramics, or a porous material formed by sintering or bonding gel materials and short fibers, or 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 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.

9. a method of making a thermally conductive body having three-dimensional lattice channels therein, 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.

10. a method for making a heat conductor having a three-dimensional network of channels therein as claimed in claim 9, 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.

11. a method for making a heat conductor having a three-dimensional network of channels therein as claimed in claim 9, 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.

12. A method of manufacturing a heat conductor having three-dimensional lattice channels therein as claimed in claim 9 or 10, wherein:

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.

Technical Field

the invention relates to a heat conductor and a manufacturing method thereof.

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.

Disclosure of Invention

The invention aims to overcome the defects and provide a heat conductor with rapid heat conduction and good pressure resistance.

the invention 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 heat of a heating object is quickly transferred out of a heat source through the vaporized liquid, namely the heat transfer principle of the heat pipe, and the heat conduction capability of the heat pipe exceeds that 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 plastics, rubber, metal and ceramics, or a porous material formed by sintering or bonding gel materials and short fibers, or a sintered porous material.

preferably, the sintered porous material is 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 material of the invention has 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 material prepared by the invention fully utilizes the heat conduction principle and the rapid heat transfer property of the phase change medium, the heat of a heating object is rapidly transferred to the outside of a heat source through the vaporized liquid, and the heat conduction capability of the material exceeds the heat conduction capability of any known metal.

The internal gas channels are mutually communicated three-dimensional grid channels which are 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 conductor is heated, so that the area capable of dissipating heat is increased.

thirdly, because the shell is wrapped and tightly attached to the liquid absorption core material, and the liquid absorption core material is fully distributed in the shell and internally provided with the integrated structure of a plurality of gas channels, the liquid absorption core material has a strong supporting effect on the shell, and has large pressure resistance in the thickness direction, so that the shell material can not play a supporting effect of structural strength and only plays a sealing effect, and the shell can be made thinner, and the heat transfer effect is 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 present invention is further described with reference to the accompanying drawings and embodiments: