CN215736930U - Porous ceramic heating structure, atomizing core and electronic cigarette - Google Patents
Porous ceramic heating structure, atomizing core and electronic cigarette Download PDFInfo
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Abstract
In order to solve the problems of low structural strength and poor atomization effect of the existing electronic cigarette atomization core, the utility model provides a porous ceramic heating structure which comprises a porous ceramic piece and a graphene layer, wherein the porous ceramic piece comprises an oil inlet surface and a fog outlet surface, the graphene layer at least covers the fog outlet surface of the porous ceramic piece, the graphene layer is used for generating heat when electrified, and the graphene layer is a porous layer. Porous ceramic heating structure's porosity is high, and the tobacco tar can well soak wherein, and graphite alkene layer has porous structure, both has excellent electric conductivity and can high-efficient atomizing tobacco tar, and porous structure can not influence smog and permeate through simultaneously, promotes user experience, and the tobacco tar fast consumption is effectively avoided to above-mentioned structure, promotes whole result of use.
Description
Technical Field
The utility model belongs to the technical field of electronic cigarettes, and particularly relates to a porous ceramic heating structure, an atomizing core and an electronic cigarette.
Background
The electronic cigarette is an electronic product simulating a cigarette, and has the same appearance, smoke and experience as the traditional ignition type cigarette. Generally, an electronic cigarette mainly comprises an atomizing device and a power supply, wherein the atomizing device mainly comprises a heating component and an oil storage device. Firstly, the tobacco juice water conservancy diversion that leads oil device and store in with the oil storage device is to heating element, and heating element connects the power and produces the heat, forms smog with the tobacco juice atomizing, flows out from the air current passageway to supply the user to inhale.
At present, the types of atomization devices in the market are mainly divided into two main types according to the difference of materials used for atomization cores: one is to adopt the atomization cotton as the atomization core, the other is to adopt the porous ceramic as the atomization core, the electronic cigarette using the atomization cotton atomization core is easy to produce burnt smell of the atomization cotton and metal taste produced by heating of the metal heating wire in the smoking process, because the atomization cotton has large air permeability, the metal taste produced by the metal heating wire directly enters the mouth of the smoker along with the smoke, and the smoking mouth feel has great defects; therefore, electronic cigarettes using porous ceramic atomizing cores are the mainstream technology.
Patent CN112545066A discloses a preparation method that can be applied to graphite alkene porous ceramics that can generate heat of electron smog core, mainly prepare porous ceramics with oxidation graphite alkene powder and ceramic powder sintering, this mode preparation technology is complicated, and porous ceramic structure electric conductivity and porosity that obtain are uncontrollable, oxidation graphite alkene embedding ceramic structure simultaneously, can also influence sintering process and the final porous ceramic's that obtains structural strength, because graphite alkene powder fully dispersed is in ceramic matrix, so the porous ceramics that this scheme obtained can the bulk heating at the ohmic heating in-process, be difficult to cool off fast, make the tobacco tar rapid consumption of infiltrating in porous ceramics easily, can't supply smoothly, influence the continuous operation effect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a porous ceramic heating structure, an atomizing core and an electronic cigarette, and aims to solve the problems that an existing electronic cigarette atomizing core is low in structural strength and poor in atomizing effect.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
in one aspect, the utility model provides a porous ceramic heating structure, which comprises a porous ceramic piece and a graphene layer, wherein the porous ceramic piece comprises an oil inlet surface and a fog outlet surface, the graphene layer at least covers the fog outlet surface of the porous ceramic piece, the graphene layer is used for generating heat when electrified, and the graphene layer is a porous layer.
Optionally, the porosity of the porous ceramic piece is the same as that of the graphene layer, and the graphene layer completely covers the fog outlet surface of the porous ceramic piece.
Optionally, porous ceramic spare includes first porous ceramic layer and the porous ceramic layer of second, first porous ceramic layer is including advancing oil level and play oil level, the porous ceramic layer of second set up in on the oil level of first porous ceramic layer, the porous ceramic layer of second is including advancing oil level and play matte, graphite alkene layer cover at least in on the play matte of the porous ceramic layer of second.
Optionally, the porosity of the first porous ceramic layer, the second porous ceramic layer and the graphene layer is 50-90%.
Optionally, the thickness of the first porous ceramic layer is 0.1-10 mm;
the thickness of the second porous ceramic layer is 0.1-10 mm;
the thickness of the graphene layer is 0.01-5 mm.
Optionally, the porous ceramic heating layer further includes an electrode contact layer, the electrode contact layer is disposed on the outer side of the second porous ceramic layer, and the electrode contact layer is electrically connected to the graphene layer and is used for electrically connecting to an external circuit.
Optionally, the thickness of the electrode contact layer is 0.01-100 μm.
Optionally, at least a portion of the graphene layer penetrates through the outer surface of the second porous ceramic layer and covers the inner walls of the pores of the second porous ceramic layer.
In another aspect, the utility model further provides an atomizing core, which comprises the porous ceramic heating structure.
On the other hand, the utility model also provides an electronic cigarette which comprises the atomization core.
The utility model has the beneficial effects that: according to the technical scheme, the porous graphene layer is used as a heating structure, the graphene layer is excellent in conductivity, the temperature can be rapidly increased to 280-350 ℃ after the graphene layer is electrified, tobacco tar infiltrated in the porous ceramic part is efficiently atomized, and a good atomizing effect on the tobacco tar is realized.
Drawings
FIG. 1 is a schematic cross-sectional view of a porous ceramic heating structure according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a porous ceramic heating structure according to another embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a porous ceramic heating structure according to another embodiment of the present invention;
the reference numbers in the drawings of the specification are as follows:
1. a porous ceramic piece; 101. a first porous ceramic layer; 102. a second porous ceramic layer; 2. a graphene layer; 3. and an electrode contact layer.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It should be noted that all the directional indicators (such as the side, the two sides … …) in the embodiment of the present invention are only used to explain the relative position relationship, movement, etc. between the structures in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a porous ceramic heating structure, including a porous ceramic piece 1 and a graphene layer 2, where the porous ceramic piece 1 includes an oil inlet surface and a fog outlet surface, the graphene layer 2 at least covers the fog outlet surface of the porous ceramic piece 1, the graphene layer 2 is used for generating heat when energized, and the graphene layer 2 is a porous layer.
According to the technical scheme, the porous graphene layer is used as a heating structure, the graphene layer is excellent in conductivity, the temperature can be rapidly increased to 280-350 ℃ after the graphene layer is electrified, tobacco tar infiltrated in the porous ceramic part is efficiently atomized, and a good atomizing effect on the tobacco tar is realized.
In some embodiments, the porosity of the porous ceramic piece 1 and the graphene layer 2 are the same, and the graphene layer 2 completely covers the fogging surface of the porous ceramic piece 1.
The porosity of graphite alkene layer 2 and porous ceramic spare 1 is the same, effectively avoids graphite alkene layer 2 to the jam of smog, reinforcing user experience. Graphene layer 2 is the face-like even attached on the fog face that goes out of porous ceramic spare 1, and even face-like heating structure is favorable to promoting atomization effect.
In some embodiments, the porous ceramic part 1 includes a first porous ceramic layer 101 and a second porous ceramic layer 102, the first porous ceramic layer 101 includes an oil inlet surface and an oil outlet surface, the second porous ceramic layer 102 is disposed on the oil outlet surface of the first porous ceramic layer 101, the second porous ceramic layer 102 includes an oil inlet surface and a mist outlet surface, and the graphene layer 2 covers at least the mist outlet surface of the second porous ceramic layer 102.
Adopt the mode that first porous ceramic layer 101 and the porous ceramic layer 102 of second combined together, can increase the structural strength of atomizing core on the one hand, on the other hand, this combination mode makes atomizing core overall structure divide the work of a project clearly, and first porous ceramic layer 101 is used for storing and supplies the tobacco tar for the porous ceramic layer 102 of second, and the graphene layer 2 that is located the porous ceramic layer 102 surface of second heats, the tobacco tar of high-efficient atomizing infiltration in the porous ceramic layer 102 of second after switching on, realizes the good atomization effect to the tobacco tar. Simultaneously first porous ceramic layer 101 absorbs, completely cuts off the heat that comes from graphite alkene layer in the clearance of graphite alkene layer intermittent type formula work, avoids the quick consumption of tobacco tar, promotes whole result of use.
In some embodiments, the first porous ceramic layer 101, the second porous ceramic layer 102, and the graphene layer 2 have a porosity of 50 to 90%.
Porosity through with first porous ceramic layer 101, the porous ceramic layer 102 of second and graphite alkene layer 2 all controls at 50 ~ 90%, has guaranteed the homogeneity of porous ceramic heating structure porosity, causes the unfavorable condition such as jam or drain is too fast because of the sudden change of different structure porosities when avoiding the tobacco tar circulation, has ensured the continuous homogeneity of atomization effect, promotes user experience. Simultaneously with porous ceramic heating structure's porosity control 50 ~ 90%, can guarantee on the one hand that first porous ceramic layer 101 and second porous ceramic layer 102 all have good drain efficiency, prevent to appear the phenomenon that the tobacco tar circulation is not smooth and takes place dry combustion method to promote atomization effect, on the other hand, can avoid because of the porosity is too high, the drain is too fast, appears the tobacco tar and consumes phenomenon such as too fast or weeping.
The preparation method of the graphene layer is not particularly limited, and for example, the graphene layer may be obtained by coating graphene slurry on the surface of the second porous ceramic layer 102 by a chemical vapor deposition method, a dipping method, a spraying method, or the like, and drying and curing the graphene slurry.
In some embodiments, the first porous ceramic layer 101 has a thickness of 0.1 to 10 mm;
the thickness of the second porous ceramic layer 102 is 0.1-10 mm;
first porous ceramic layer 101 is used for storing the tobacco tar on the one hand and for second porous ceramic layer 102 supplies the tobacco tar, and on the other hand is used for absorbing and completely cutting off the heat that comes from graphite alkene layer at the working gap on graphite alkene layer, avoids the quick consumption of tobacco tar, promotes the product and uses experience. If the thickness of first porous ceramic layer 101 is less than 0.1mm, because thickness is too thin, can't effectively completely cut off the heat, also can't play good effect to the storage of tobacco tar simultaneously, if the thickness of first porous ceramic layer 101 is greater than 10mm, and the volume of electron cigarette is unfavorable for reducing to the thickness overlength for the product volume is too big, influences user experience.
The second porous ceramic layer 102 is mainly used for storing and atomizing tobacco tar, and the second porous ceramic layer 102 within the thickness range can realize efficient atomization of the tobacco tar.
The source of the first porous ceramic layer 101 and the second porous ceramic layer 102 is not particularly limited in the present invention, and may be prepared in a conventional manner in the art or commercially available, for example: the method can be obtained by adopting a template method, a pore-forming agent pore-forming method, a sol-gel method and the like.
Graphene is a new single-layer sheet-shaped structure material formed by carbon atoms, and has the advantages of low resistivity, high electron migration speed, high thermal conductivity, excellent mechanical properties and the like, the graphene layer 2 is rapidly heated to 280-350 ℃ under the power-on condition, the tobacco tar soaked in the second porous ceramic layer 102 can be efficiently atomized by planar uniform heating, and the conditions of tobacco tar scorching and the like caused by local high temperature are avoided. When the thickness of graphite alkene layer 2 is less than 0.01mm, it is low excessively to the adhesion of second porous ceramic layer 102, along with the increase of live time, the condition influence product quality such as drops appears easily, if when the thickness of graphite alkene layer 2 is greater than 5mm, the heat that the graphite alkene layer of excessive thickness produced is too much, causes local high temperature easily, leads to tobacco tar scorching and consumes fast etc. influences user experience.
Referring to fig. 2 to 3, in some embodiments, the porous ceramic heating structure further includes an electrode contact layer 3, the electrode contact layer 3 is disposed outside the second porous ceramic layer 102, and the electrode contact layer 3 is electrically connected to the graphene layer 2 and is used for electrically connecting to an external circuit.
The electrode contact layer 3 is mainly used for electrically connecting the graphene layer 2 with an external circuit to realize the electrification and heating functions of the graphene layer 2, and the preparation method of the electrode contact layer 3 is not particularly limited in the present invention, and for example, a metal may be attached to the surface of the graphene layer by screen printing, physical vapor deposition, chemical vapor deposition, evaporation, or the like.
Referring to fig. 2, in some embodiments, the electrode contact layer 3 is disposed on a surface of the graphene layer 2 facing away from the first porous ceramic layer 101.
Referring to fig. 3, in other embodiments, the electrode contact layer 3 is disposed on a side surface of the graphene layer 2 perpendicular to the fog surface.
In some embodiments, the thickness of the electrode contact layer 3 is 0.1 to 100 μm.
In the present invention, there is no particular limitation on the material of the electrode contact layer 3, and the resistance of the electrode contact layer 3 is as low as possible, so it is preferable that the electrode contact layer 3 includes silver or copper, and other metals or alloys having low resistance may be applied to the electrode contact layer.
In some embodiments, at least a portion of the graphene layer penetrates the outer surface of the second porous ceramic layer 102 and covers the inner walls of the pores of the second porous ceramic layer 102.
At least part of graphene layer 2 cover in be favorable to increasing graphene layer's specific surface area on the space inner wall of second porous ceramic layer 102, improve atomization effect, can also improve graphene layer 2 to second porous ceramic layer 102's adhesion simultaneously, reduce and drop, prolong the life of electron cigarette.
On the other hand, the embodiment of the utility model also provides an atomizing core which comprises the porous ceramic heating structure.
On the other hand, the embodiment of the utility model also provides an electronic cigarette which comprises the atomizing core.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The porous ceramic heating structure is characterized by comprising a porous ceramic piece and a graphene layer, wherein the porous ceramic piece comprises an oil inlet surface and a fog outlet surface, the graphene layer at least covers the fog outlet surface of the porous ceramic piece, the graphene layer is used for generating heat when electrified, and the graphene layer is a porous layer.
2. The porous ceramic heating structure of claim 1, wherein the porosity of the porous ceramic piece and the graphene layer are the same, and the graphene layer completely covers the fogging surface of the porous ceramic piece.
3. The porous ceramic heating structure of claim 1, wherein the porous ceramic member comprises a first porous ceramic layer and a second porous ceramic layer, the first porous ceramic layer comprises an oil inlet surface and an oil outlet surface, the second porous ceramic layer is disposed on the oil outlet surface of the first porous ceramic layer, the second porous ceramic layer comprises an oil inlet surface and a mist outlet surface, and the graphene layer covers at least the mist outlet surface of the second porous ceramic layer.
4. The porous ceramic heating structure of claim 3, wherein the first porous ceramic layer, the second porous ceramic layer and the graphene layer have a porosity of 50-90%.
5. The porous ceramic heating structure according to claim 3, wherein the first porous ceramic layer has a thickness of 0.1 to 10 mm;
the thickness of the second porous ceramic layer is 0.1-10 mm;
the thickness of the graphene layer is 0.01-5 mm.
6. The porous ceramic heating structure according to claim 3, further comprising an electrode contact layer disposed outside the second porous ceramic layer, and electrically connected to the graphene layer and used for electrical connection with an external circuit.
7. The porous ceramic heating structure according to claim 6, wherein the thickness of the electrode contact layer is 0.01 to 100 μm.
8. The porous ceramic heating structure of claim 3, wherein at least a portion of the graphene layer penetrates an outer surface of the second porous ceramic layer and overlies inner pore walls of the second porous ceramic layer.
9. An atomizing core comprising the porous ceramic heating structure of any one of claims 1 to 8.
10. An electronic cigarette comprising the atomizing core of claim 9.
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| CN202121930780.1U CN215736930U (en) | 2021-08-17 | 2021-08-17 | Porous ceramic heating structure, atomizing core and electronic cigarette |
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| CN202121930780.1U CN215736930U (en) | 2021-08-17 | 2021-08-17 | Porous ceramic heating structure, atomizing core and electronic cigarette |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007744A1 (en) * | 2022-07-04 | 2024-01-11 | 比亚迪精密制造有限公司 | Atomization core for electronic cigarette, cartridge for electronic cigarette, and electronic cigarette |
| WO2024007743A1 (en) * | 2022-07-04 | 2024-01-11 | 比亚迪精密制造有限公司 | Atomization core used for electronic cigarette, cartridge used for electronic cigarette, and electronic cigarette |
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2021
- 2021-08-17 CN CN202121930780.1U patent/CN215736930U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007744A1 (en) * | 2022-07-04 | 2024-01-11 | 比亚迪精密制造有限公司 | Atomization core for electronic cigarette, cartridge for electronic cigarette, and electronic cigarette |
| WO2024007743A1 (en) * | 2022-07-04 | 2024-01-11 | 比亚迪精密制造有限公司 | Atomization core used for electronic cigarette, cartridge used for electronic cigarette, and electronic cigarette |
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