CN115259888B - Preparation method of integrated ceramic atomizing core and ceramic atomizer - Google Patents

Preparation method of integrated ceramic atomizing core and ceramic atomizer Download PDF

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CN115259888B
CN115259888B CN202210823786.1A CN202210823786A CN115259888B CN 115259888 B CN115259888 B CN 115259888B CN 202210823786 A CN202210823786 A CN 202210823786A CN 115259888 B CN115259888 B CN 115259888B
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ceramic
heat conduction
atomizing
cavity
base
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CN115259888A (en
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陈家太
周胜文
林云燕
李雪
陈时凯
刘光烜
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Smiss Technology Co Ltd
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Smiss Technology Co Ltd
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    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
    • C04B38/0635—Compounding ingredients
    • C04B38/0645—Burnable, meltable, sublimable materials
    • C04B38/067—Macromolecular compounds
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
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    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
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    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient

Abstract

The invention provides a preparation method of an integrated ceramic atomizing core, which comprises the following steps: preparing a heat conducting base and ceramic slurry; the whole heat conduction base is integrally formed by adopting a heat conduction material, and an atomization cavity and an oil storage cavity are formed in the heat conduction base; injecting the ceramic slurry into the atomizing cavity of the heat conduction base, and then sintering to obtain an integrated ceramic atomizing core; the ceramic slurry in the atomization cavity is sintered to form a porous ceramic body, and the porous ceramic body is in heat conduction contact with the inner wall of the atomization cavity. The preparation method of the integrated ceramic atomizing core provided by the invention adopts an integrated sintering process, so that the preparation method is simple, the heat conduction efficiency is high, and the oil guide cotton is omitted. The invention also provides a ceramic atomizer.

Description

Preparation method of integrated ceramic atomizing core and ceramic atomizer
Technical Field
The invention relates to the technical field of electronic cigarettes, in particular to a preparation method of an integrated ceramic atomizing core and a ceramic atomizer.
Background
As one of the core components of the electronic atomization device (electronic cigarette), the porous ceramic atomizer has the advantages of strong lipophilicity, uniform heating, high use temperature and the like compared with the traditional cotton core or glass fiber ropes.
At present, the form of smoke paste atomization in the ceramic atomizer is that after the smoke paste is heated and melted through peripheral heating steel pipes, the smoke paste is guided to a ceramic heating body through non-woven fabrics (oil guiding cotton) for heating and atomization, and various materials such as steel pipes, smoke paste, non-woven fabrics and the like are needed in the mode, so that the smoke paste atomizer is troublesome in assembly, unstable in structure and low in heat conduction efficiency, and the use experience of a user is influenced.
Disclosure of Invention
The invention aims to provide a preparation method of an integrated ceramic atomizing core and a ceramic atomizer, wherein the preparation method adopts an integrated sintering process, so that the preparation method is simple in manufacture, high in heat conduction efficiency and free of oil-guiding cotton.
The invention provides a preparation method of an integrated ceramic atomizing core, which comprises the following steps:
preparing a heat conducting base and ceramic slurry; the whole heat conduction base is integrally formed by adopting a heat conduction material, and an atomization cavity and an oil storage cavity are formed in the heat conduction base;
injecting the ceramic slurry into the atomizing cavity of the heat conduction base, and then sintering to obtain an integrated ceramic atomizing core; the ceramic slurry in the atomization cavity is sintered to form a porous ceramic body, and the porous ceramic body is in heat conduction contact with the inner wall of the atomization cavity.
In one implementation, the preparation process of the heat conducting base includes the following steps:
mixing a main material, conductive powder and first glass powder, performing ball milling to obtain a first mixed material, and placing the first mixed material into an injection molding machine for injection molding to obtain the heat conduction base; the main material comprises metal oxide and aluminum nitride, wherein the metal oxide is at least one of aluminum oxide and zirconium oxide.
In one implementation manner, the main material, the conductive powder and the first glass powder are respectively in parts by weight: 70-75 parts of main material, 10-15 parts of conductive powder and 10-15 parts of first glass powder; the mesh number of the main material is 300-600 meshes, and the mesh number of the conductive powder is 800-1000 meshes.
In one possible manner, the preparation process of the ceramic slurry includes the following steps:
and mixing diatomite, second glass powder and PMMA, performing ball milling to obtain a second mixed material, mixing the second mixed material with paraffin and stearic acid, and performing ball milling in an ethanol solution to obtain the ceramic slurry.
In one implementation, the diatomite, the second glass powder, the PMMA, the paraffin and the stearic acid are respectively in parts by weight: 150-200 parts of diatomite, 100-120 parts of second glass powder, 250-300 parts of PMMA, 250-350 parts of paraffin and 30-70 parts of stearic acid; the particle size of the PMMA is 100-200 microns.
In one implementation manner, before the ceramic slurry is injected into the atomizing cavity of the heat conducting base, a heating body is pre-embedded in the atomizing cavity of the heat conducting base, then the ceramic slurry is injected into the atomizing cavity of the heat conducting base, and then sintering is carried out to obtain the integrated ceramic atomizing core, so that the formed porous ceramic body is in heat conducting contact with the heating body.
In one implementation, a partition board is arranged in the heat conduction base, and the atomizing cavity and the oil storage cavity are separated by the partition board; and the separator is provided with an oil outlet, and the porous ceramic body is arranged corresponding to the oil outlet and is used for blocking the oil outlet.
The invention also provides a ceramic atomizer, which comprises an integrated ceramic atomizing core, wherein the integrated ceramic atomizing core is manufactured by adopting the preparation method of the integrated ceramic atomizing core; the integrated ceramic atomizing core comprises a heat conduction base and a porous ceramic body, an atomizing cavity and an oil storage cavity are arranged in the heat conduction base, the porous ceramic body is positioned in the atomizing cavity and in heat conduction contact with the inner wall of the atomizing cavity, and the integrated ceramic atomizing core is formed by integrally sintering the porous ceramic body and the heat conduction base.
In one implementation, a partition board is arranged in the heat conduction base, and the atomizing cavity and the oil storage cavity are separated by the partition board; and the separator is provided with an oil outlet, and the porous ceramic body is arranged corresponding to the oil outlet and is used for blocking the oil outlet.
In one implementation manner, the atomizing cavity is arranged at the middle position in the heat conducting base, the number of the oil storage cavities is two, and the two oil storage cavities are respectively arranged at two opposite sides of the atomizing cavity; the heat conduction base is internally provided with two partition boards, the two partition boards correspond to the two oil storage cavities respectively, the two partition boards are located at two opposite sides of the porous ceramic body respectively, and two opposite ends of the porous ceramic body block oil outlets on the two partition boards respectively.
In one implementation, the ceramic atomizer further comprises a housing and a suction nozzle, the integrated ceramic atomizing core is disposed in the housing, the suction nozzle is disposed above the housing and connected to the housing, and the atomizing cavity is in communication with the suction nozzle.
In one implementation, a smoke outlet is formed in the top of the heat conducting base at a position corresponding to the atomizing cavity, and the atomizing cavity is communicated with the suction nozzle through the smoke outlet.
In one implementation, the side wall of the heat conducting base is spaced from the inner wall of the housing, a flue is formed between the side wall of the heat conducting base and the inner wall of the housing, and the atomizing cavity is communicated with the suction nozzle through the flue.
In one implementation, the ceramic atomizer further includes a heater disposed within the housing; the heating body comprises a heating net and an electrode, the electrode is electrically connected with the heating net, the heating net is in heat conduction contact with the porous ceramic body, and the electrode extends out of the shell.
According to the preparation method of the integrated ceramic atomizing core, the heat conduction base and the ceramic slurry are prepared respectively, then the ceramic slurry is injected into the atomizing cavity of the heat conduction base, and the integrated ceramic atomizing core is obtained through sintering. Meanwhile, the porous ceramic body and the heat conducting base are integrally sintered, so that the porous ceramic body is in heat conducting contact with the inner wall of the atomization cavity, good heat conducting performance is achieved between the porous ceramic body and the heat conducting base, the heat conducting base is integrally formed by heat conducting materials, heat of the porous ceramic body can be quickly conducted onto the heat conducting base, tobacco tar (tobacco paste) in the oil storage cavity can be quickly heated, melted and injected into the porous ceramic body to be atomized, oil guiding cotton is omitted, heat conducting efficiency is high, and user experience is improved.
Drawings
Fig. 1 is a schematic structural view of a ceramic atomizer according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of fig. 1.
Fig. 3 is a schematic diagram of the explosive structure of fig. 1.
Fig. 4 is a bottom view of fig. 3.
Fig. 5 is a perspective view of a thermally conductive base in an embodiment of the present invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
The terms upper, lower, left, right, front, rear, top, bottom and the like (if any) in the description and in the claims are used for descriptive purposes and not necessarily for describing relative positions of structures in the figures and in describing relative positions of structures. It should be understood that the use of directional terms should not be construed to limit the scope of the invention as claimed.
Fig. 1 is a schematic structural view of a ceramic atomizer according to an embodiment of the present invention, fig. 2 is a schematic sectional view of fig. 1, and fig. 3 is a schematic exploded structural view of fig. 1. As shown in fig. 1 to 3, the method for preparing an integrated ceramic atomizing core provided by the embodiment of the invention is used for preparing an integrated ceramic atomizing core in a ceramic atomizer. The preparation method of the integrated ceramic atomizing core comprises the following steps:
preparing a heat conducting base 1 and ceramic slurry; the whole heat conduction base 1 is integrally formed by adopting a heat conduction material, and an atomization cavity 11 and an oil storage cavity 12 are formed in the heat conduction base 1;
injecting ceramic slurry into the atomizing cavity 11 of the heat conduction base 1, and then sintering to obtain an integrated ceramic atomizing core; wherein, the ceramic slurry in the atomization cavity 11 forms a porous ceramic body 2 after sintering, and the porous ceramic body 2 is in heat conduction contact with the inner wall of the atomization cavity 11.
Specifically, the preparation method of the integrated ceramic atomizing core provided in this embodiment includes the steps of preparing the heat conducting base 1 and the ceramic slurry respectively, then injecting the ceramic slurry into the atomizing cavity 11 of the heat conducting base 1, and sintering to obtain the integrated ceramic atomizing core. Meanwhile, the porous ceramic body 2 and the heat conducting base 1 are integrally sintered, so that the porous ceramic body 2 is in heat conducting contact with the inner wall of the atomization cavity 11, good heat conducting performance is achieved between the porous ceramic body 2 and the heat conducting base 1, the heat conducting base 1 is integrally formed by heat conducting materials, heat of the porous ceramic body 2 can be quickly conducted onto the heat conducting base 1, and accordingly tobacco tar (tobacco paste) in the oil storage cavity 12 can be quickly heated, melted and injected into the porous ceramic body 2 for atomization, oil guiding cotton is omitted, and heat conducting efficiency is high, so that user experience is improved.
As one embodiment, the sintering temperature is 1000-1300 ℃ and the sintering time is 3-4 hours.
As an embodiment, the preparation process of the heat conductive base 1 includes the following steps:
mixing the main material, the conductive powder and the first glass powder, performing ball milling to obtain a first mixed material, and placing the first mixed material into an injection molding machine for injection molding to obtain the heat conduction base 1; the main material comprises metal oxide and aluminum nitride, wherein the metal oxide is at least one of aluminum oxide and zirconium oxide. The main material, the conductive powder and the first glass powder are respectively prepared from the following components in parts by weight: the main material is 70-75 parts, the conductive powder is 10-15 parts, and the first glass powder is 10-15 parts. The mesh number of the main materials is 300-600 meshes, and the mesh number of the conductive powder is 800-1000 meshes.
Specifically, the main material is the main material component of the heat conduction base 1, and the main function of the main material is to form a compact ceramic matrix; the conductive powder can be conductive aluminum powder, conductive carbon powder and the like, and is mainly used for improving the electrical conductivity and the heat conductivity of the heat conduction base 1; the first glass frit is mainly used for improving the bonding performance of each component in the heat conduction base 1.
As one embodiment, the preparation process of the ceramic slurry includes the steps of:
and mixing diatomite, second glass powder and PMMA (polymethyl methacrylate) and performing ball milling to obtain a second mixed material, mixing the second mixed material with paraffin and stearic acid, and performing ball milling in an ethanol solution to obtain ceramic slurry. Wherein, diatomaceous earth, second glass powder, PMMA, paraffin and stearic acid are respectively with the weight portions: 150-200 parts of diatomite, 100-120 parts of second glass powder, 250-300 parts of PMMA, 250-350 parts of paraffin and 30-70 parts of stearic acid. The particle size of PMMA is 100-200 microns.
Preferably, the weight part of paraffin is 300 parts, and the weight part of stearic acid is 50 parts.
Specifically, the diatomite is a base material of the porous ceramic body 2, the second glass powder is mainly used for improving the bonding performance of each component in the porous ceramic body 2, the PMMA is mainly used for generating pores in the porous ceramic body 2, and the paraffin is mainly used for uniformly mixing each component in the porous ceramic body 2; stearic acid is used as a surfactant and is mainly used for increasing the compatibility of the second mixed material and the ethanol solution, reducing the viscosity of the system, increasing the fluidity and avoiding the agglomeration phenomenon of each component in the ceramic slurry. By the collocation of the material components, the pore diameter of the pores in the porous ceramic body 2 can reach about 30 micrometers, and the porosity can reach 40% -60%.
As an embodiment, before the ceramic slurry is injected into the atomizing area 11 of the heat conducting base 1, the heating element 5 is pre-embedded into the atomizing area 11 of the heat conducting base 1, the ceramic slurry is injected into the atomizing area 11 of the heat conducting base 1, and then the ceramic slurry is sintered to obtain an integrated ceramic atomizing core, so that the formed porous ceramic body 2 is in heat conducting contact with the heating element 5. The heating element 5 may be embedded in the porous ceramic body 2 or may be in contact with the surface of the porous ceramic body 2, and it is only necessary to keep heat conduction between the heating element 5 and the porous ceramic body 2.
As shown in fig. 1 to 5, the embodiment of the invention further provides a ceramic atomizer, which comprises an integrated ceramic atomizing core, wherein the integrated ceramic atomizing core is manufactured by adopting the manufacturing method of the integrated ceramic atomizing core. The integrated ceramic atomization core comprises a heat conduction base 1 and a porous ceramic body 2, wherein an atomization cavity 11 and an oil storage cavity 12 are arranged in the heat conduction base 1, and smoke oil (smoke cream) is stored in the oil storage cavity 12; the porous ceramic body 2 is positioned in the atomizing cavity 11 and is in heat conduction contact with the inner wall of the atomizing cavity 11, and the porous ceramic body 2 is positioned at the bottom position in the atomizing cavity 11; the integrated ceramic atomization core is formed by integrally sintering a porous ceramic body 2 and a heat conduction base 1.
As shown in fig. 2, as an embodiment, a partition 13 is arranged in the heat conduction base 1, and the atomization cavity 11 and the oil storage cavity 12 are separated by the partition 13; the separator 13 is provided with oil outlet holes 131, and the porous ceramic body 2 is provided corresponding to the oil outlet holes 131 and blocks the oil outlet holes 131. The oil storage cavity 12 is of a closed structure, and tobacco tar in the oil storage cavity 12 can only flow into the porous ceramic body 2 through the oil outlet 131.
Specifically, the partition 13 and the heat-conducting base 1 are integrally formed (i.e., the partition 13 is a part of the heat-conducting base 1), so that the partition 13 is also made of a heat-conducting material, the partition 13 has a heat-conducting function, and the partition 13 can conduct part of heat to tobacco tar (tobacco paste) in the oil storage cavity 12. The heat conduction manner of the separator 13 includes the following two manners: 1. the separator 13 transfers heat through its portion in contact with the porous ceramic body 2; 2. the smoke generated after the smoke oil (smoke paste) in the atomization cavity 11 is atomized contacts with the surface of the partition plate 13, so that the partition plate 13 transfers redundant heat in the smoke.
As shown in fig. 2, as an embodiment, the atomizing chamber 11 is disposed at a middle position in the heat conducting base 1, and the number of the oil storage chambers 12 is two, and the two oil storage chambers 12 are disposed at two opposite sides of the atomizing chamber 11. Two partition plates 13 are arranged in the heat conduction base 1, the two partition plates 13 are oppositely arranged and are respectively located at two opposite sides of the porous ceramic body 2, two oil storage cavities 12 are respectively corresponding to the two partition plates 13, each oil storage cavity 12 is separated from the atomization cavity 11 through a corresponding partition plate 13, and two opposite ends of the porous ceramic body 2 are respectively used for blocking oil outlet holes 131 in the two partition plates 13, so that a structure with two sides for discharging oil is formed.
As shown in fig. 2 and 3, as an embodiment, the ceramic atomizer further includes a housing 3 and a suction nozzle 4, the integrated ceramic atomizing core is disposed in the housing 3, the suction nozzle 4 is disposed above the housing 3 and connected to the housing 3, and the atomizing chamber 11 in the heat conducting base 1 is communicated with the suction nozzle 4.
As shown in fig. 2 and 3, as an embodiment, a smoke outlet 14 is provided at the top of the heat conducting base 1 at a position corresponding to the atomizing chamber 11, the atomizing chamber 11 is communicated with the smoke outlet 14, and the atomizing chamber 11 is communicated with the suction nozzle 4 through the smoke outlet 14.
As shown in fig. 2 and 3, as an embodiment, the side wall of the heat conducting base 1 is spaced from the inner wall of the housing 3, a flue 31 is formed between the side wall of the heat conducting base 1 and the inner wall of the housing 3, the atomizing cavity 11 is communicated with the flue 31, and the atomizing cavity 11 is also communicated with the suction nozzle 4 through the flue 31.
Specifically, in this embodiment, the bottom of the heat conducting base 1 is provided with an opening communicating with the atomizing chamber 11, the atomizing chamber 11 communicates with the flue 31 through the opening at the bottom, and the flue 31 is formed between the side walls on two opposite sides of the heat conducting base 1 and the inner wall of the housing 3. In this embodiment, by providing the smoke outlet 14 and the plurality of flues 31, the passage of the smoke flowing from the atomizing cavity 11 to the suction nozzle 4 is increased, so that the discharge amount of the smoke each time is increased, and the use experience of a user is improved.
As shown in fig. 2 and 4, the ceramic atomizer further includes a heating element 5 as an embodiment, and the heating element 5 is provided in the housing 3. The heating element 5 includes a heating mesh 51 and an electrode 52, the heating mesh 51 is a mesh structure, the electrode 52 is electrically connected with the heating mesh 51, the heating mesh 51 is in heat conduction contact with the porous ceramic body 2 (the heating mesh 51 may be buried in the porous ceramic body 2 or in contact with the surface of the porous ceramic body 2, only the heat conduction between the heating mesh 51 and the porous ceramic body 2 needs to be maintained), and the electrode 52 extends out of the casing 3.
Specifically, the number of the electrodes 52 is two, positive and negative electrodes, respectively, for connection with the positive and negative electrodes of a power source (not shown), respectively. The casing 3 is provided with a through hole 32, and the electrode 52 extends out of the casing 3 through the through hole 32.
The working principle of the ceramic atomizer in the embodiment is as follows: after the heating body 5 is conducted with a power supply, the heating net 51 heats and conducts heat to the porous ceramic body 2, the porous ceramic body 2 conducts part of heat to the heat conduction base 1, at the moment, tobacco tar (tobacco paste) stored in the oil storage cavity 12 of the heat conduction base 1 is injected into the porous ceramic body 2 through the oil outlet 131 on the partition plate 13 after being heated, the tobacco tar is atomized into smoke after being further heated in the porous ceramic body 2, and the atomized smoke flows to the suction nozzle 4 through the smoke outlet 14 and the flue 31 so as to be sucked by a user.
According to the preparation method of the integrated ceramic atomizing core and the ceramic atomizer provided by the embodiment of the invention, the heat conduction base 1 and the ceramic slurry are prepared respectively, then the ceramic slurry is injected into the atomizing cavity 11 of the heat conduction base 1, and the integrated ceramic atomizing core is obtained through sintering. Meanwhile, the porous ceramic body 2 and the heat conducting base 1 are integrally sintered, so that the porous ceramic body 2 is in heat conducting contact with the inner wall of the atomization cavity 11, good heat conducting performance is achieved between the porous ceramic body 2 and the heat conducting base 1, the heat conducting base 1 is integrally formed by heat conducting materials, heat of the porous ceramic body 2 can be quickly conducted onto the heat conducting base 1, and accordingly tobacco tar (tobacco paste) in the oil storage cavity 12 can be quickly heated, melted and injected into the porous ceramic body 2 for atomization, oil guiding cotton is omitted, and heat conducting efficiency is high, so that user experience is improved.
First embodiment
The preparation method of the integrated ceramic atomizing core provided by the embodiment comprises the following steps:
preparing a heat conduction base 1: respectively weighing 45 parts of aluminum oxide with 600 meshes, 30 parts of aluminum nitride with 600 meshes, 15 parts of conductive aluminum powder with 1000 meshes and 10 parts of glass powder, mixing, putting into a ball mill, ball-milling for 24 hours to obtain a first mixed material, and then putting the first mixed material into an injection molding machine for injection molding to obtain the heat conduction base 1;
preparing ceramic slurry: respectively weighing 200 parts of diatomite, 100 parts of glass powder and 300 parts of PMMA with the particle size of 200 microns, mixing, and putting into a ball mill for ball milling for 12 hours to obtain a second mixed material; mixing the second mixed material with 300 parts of paraffin and 50 parts of stearic acid, and performing ball milling in an ethanol solution for 12 hours to obtain ceramic slurry;
the heating body 5 is pre-buried in the atomizing cavity 11 of the heat conduction base 1, ceramic slurry is injected into the atomizing cavity 11 of the heat conduction base 1, then sintering is carried out, the sintering temperature is 1000 ℃, and the sintering time is 4 hours, so that the integrated ceramic atomizing core can be obtained.
Second embodiment
The preparation method of the integrated ceramic atomizing core provided by the embodiment comprises the following steps:
preparing a heat conduction base 1: respectively weighing 50 parts of aluminum oxide with the mesh number of 500, 20 parts of aluminum nitride with the mesh number of 500, 15 parts of conductive carbon powder with the mesh number of 800 and 15 parts of glass powder, mixing, putting into a ball mill, ball-milling for 24 hours to obtain a first mixed material, and then putting the first mixed material into an injection molding machine for injection molding to obtain the heat conduction base 1;
preparing ceramic slurry: respectively weighing 150 parts of diatomite, 120 parts of glass powder and 200 parts of PMMA with the particle size of 100 microns, mixing, and putting into a ball mill for ball milling for 12 hours to obtain a second mixed material; mixing the second mixed material with 300 parts of paraffin and 50 parts of stearic acid, and performing ball milling in an ethanol solution for 12 hours to obtain ceramic slurry;
the heating body 5 is pre-buried in the atomizing cavity 11 of the heat conduction base 1, ceramic slurry is injected into the atomizing cavity 11 of the heat conduction base 1, then sintering is carried out, the sintering temperature is 1100 ℃, and the sintering time is 4 hours, so that the integrated ceramic atomizing core can be obtained.
Third embodiment
The preparation method of the integrated ceramic atomizing core provided by the embodiment comprises the following steps:
preparing a heat conduction base 1: respectively weighing 40 parts of aluminum oxide with the mesh number of 500, 35 parts of aluminum nitride with the mesh number of 500, 10 parts of conductive aluminum powder with the mesh number of 800 and 15 parts of glass powder, mixing, putting into a ball mill, ball-milling for 24 hours to obtain a first mixed material, and then putting the first mixed material into an injection molding machine for injection molding to obtain the heat conduction base 1;
preparing ceramic slurry: respectively weighing 200 parts of diatomite, 110 parts of glass powder and 280 parts of PMMA with the particle size of 150 microns, mixing, and putting into a ball mill for ball milling for 12 hours to obtain a second mixed material; mixing the second mixed material with 300 parts of paraffin and 50 parts of stearic acid, and performing ball milling in an ethanol solution for 12 hours to obtain ceramic slurry;
the heating body 5 is pre-buried in the atomizing cavity 11 of the heat conduction base 1, ceramic slurry is injected into the atomizing cavity 11 of the heat conduction base 1, then sintering is carried out, the sintering temperature is 1300 ℃, and the sintering time is 3 hours, so that the integrated ceramic atomizing core can be obtained.
The parameters of the integrated ceramic atomizing cores prepared in the examples are shown in the following table:
Figure BDA0003745546750000101
Figure BDA0003745546750000111
from the above table, the thermal conductivity coefficient of the thermal conductive base 1 in each embodiment is greater than 170W/m·k, which indicates that the thermal conductive base 1 has good thermal conductivity; the porosity of the porous ceramic body 2 is more than 50%, the pore diameter of the pores is about 30 microns, and the porous ceramic body has good oil absorption and atomization performance, so that the integrated ceramic atomization core of each embodiment has good performance, and can meet the actual use requirements.
The foregoing is merely illustrative embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present invention, and the invention should be covered. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. The preparation method of the integrated ceramic atomizing core is characterized by comprising the following steps of:
preparing a heat conducting base and ceramic slurry; the whole heat conduction base is integrally formed by adopting a heat conduction material, and an atomization cavity and an oil storage cavity are formed in the heat conduction base;
injecting the ceramic slurry into the atomizing cavity of the heat conduction base, and then sintering to obtain an integrated ceramic atomizing core; the ceramic slurry in the atomization cavity is sintered to form a porous ceramic body, and the porous ceramic body is in heat conduction contact with the inner wall of the atomization cavity; a partition plate is arranged in the heat conduction base, the partition plate and the heat conduction base are integrally formed, and the atomizing cavity and the oil storage cavity are separated by the partition plate; and the separator is provided with an oil outlet, and the porous ceramic body is arranged corresponding to the oil outlet and is used for blocking the oil outlet.
2. The method of manufacturing an integrated ceramic atomizing core as set forth in claim 1, wherein said process of manufacturing said thermally conductive base includes the steps of:
mixing a main material, conductive powder and first glass powder, performing ball milling to obtain a first mixed material, and placing the first mixed material into an injection molding machine for injection molding to obtain the heat conduction base; the main material comprises metal oxide and aluminum nitride, wherein the metal oxide is at least one of aluminum oxide and zirconium oxide.
3. The method for preparing an integrated ceramic atomizing core according to claim 2, wherein the main material, the conductive powder and the first glass powder are respectively in parts by weight: 70-75 parts of main material, 10-15 parts of conductive powder and 10-15 parts of first glass powder; the mesh number of the main material is 300-600 meshes, and the mesh number of the conductive powder is 800-1000 meshes.
4. The method of preparing an integrated ceramic atomizing core as set forth in claim 1, wherein the preparation process of the ceramic slurry comprises the steps of:
and mixing diatomite, second glass powder and PMMA, performing ball milling to obtain a second mixed material, mixing the second mixed material with paraffin and stearic acid, and performing ball milling in an ethanol solution to obtain the ceramic slurry.
5. The method for preparing an integrated ceramic atomizing core according to claim 4, wherein the diatomite, the second glass powder, the PMMA, the paraffin and the stearic acid are respectively in parts by weight: 150-200 parts of diatomite, 100-120 parts of second glass powder, 250-300 parts of PMMA, 250-350 parts of paraffin and 30-70 parts of stearic acid; the particle size of the PMMA is 100-200 microns.
6. The method for manufacturing an integrated ceramic atomizing core according to claim 1, wherein a heating element is pre-embedded in the atomizing cavity of the heat conducting base before the ceramic slurry is injected into the atomizing cavity of the heat conducting base, and then sintering is performed to obtain the integrated ceramic atomizing core, so that the formed porous ceramic body is in heat conducting contact with the heating element.
7. A ceramic atomizer comprising an integrated ceramic atomizing core, the integrated ceramic atomizing core being made by the method of making an integrated ceramic atomizing core according to any one of claims 1-6; the integrated ceramic atomizing core comprises a heat conduction base and a porous ceramic body, an atomizing cavity and an oil storage cavity are arranged in the heat conduction base, the porous ceramic body is positioned in the atomizing cavity and is in heat conduction contact with the inner wall of the atomizing cavity, and the integrated ceramic atomizing core is formed by integrally sintering the porous ceramic body and the heat conduction base; a partition plate is arranged in the heat conduction base, the partition plate and the heat conduction base are integrally formed, and the atomizing cavity and the oil storage cavity are separated by the partition plate; and the separator is provided with an oil outlet, and the porous ceramic body is arranged corresponding to the oil outlet and is used for blocking the oil outlet.
8. The ceramic atomizer of claim 7 wherein said atomizing chambers are disposed in a central location within said thermally conductive base, said number of oil storage chambers being two, said two oil storage chambers being disposed on opposite sides of said atomizing chambers, respectively; the heat conduction base is internally provided with two partition boards, the two partition boards correspond to the two oil storage cavities respectively, the two partition boards are located at two opposite sides of the porous ceramic body respectively, and two opposite ends of the porous ceramic body block oil outlets on the two partition boards respectively.
9. The ceramic atomizer of claim 7 further comprising a housing and a suction nozzle, said integral ceramic atomizing core being disposed within said housing, said suction nozzle being located above and connected to said housing; the top of heat conduction base corresponds the position in atomizing chamber is equipped with the smoke outlet, the atomizing chamber passes through the smoke outlet with the suction nozzle communicates.
10. The ceramic atomizer of claim 9 wherein said side wall of said thermally conductive base is spaced from said inner wall of said housing, a chimney being formed between said side wall of said thermally conductive base and said inner wall of said housing, said atomizing chamber being further in communication with said suction nozzle through said chimney.
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