Through type porous carbon atomizing core and electronic atomizer

Abstract

The utility model discloses a penetrating type porous carbon atomizing core and an electronic atomizer, and belongs to the technical field of atomizing devices. The penetrating type porous carbon atomization core comprises a porous carbon body and an electrode, the porous carbon body is provided with a base part and a heating part which are integrated, the resistivity of the heating part is smaller than that of the base part, and the heating part and the base part are each of a porous structure; a penetrating part penetrating through two opposite surfaces of the porous carbon body is arranged in the porous carbon body; the heating part is positioned on the side wall of the penetrating part; the electrode is electrically connected with the heating part. The atomizing core can replace a metal heating wire and a metal net to be used in a cotton core, and the problems of cotton burning and core pasting are solved. The electronic atomizer comprises the penetrating type porous carbon atomizing core, and the reliability and the atomizing effect of the atomizer can be improved.

Description

Technical Field

[0001] This application relates to the technical field of atomization devices, and more particularly, to a through-hole porous carbon atomization core and an electronic atomizer. Background Art

[0002] The working principle of the atomization core in an electronic atomizer is generally as follows: a part of the atomization core with a porous structure contacts the atomization liquid, and uses power such as gravity, air pressure, osmotic pressure, and capillary action to transport the atomization liquid to the surface provided with a heating electrode. When an electric current is applied to the heating electrode, the heating electrode will generate heat and increase in temperature due to the Ohm effect generated by the energization. When the temperature rises to the atomization point of the atomization liquid, the atomization liquid will atomize to form an atomized aerosol.

[0003] The currently popular cotton core is a hollow tube formed by wrapping a metal mesh around a wicking cotton, and then a metal tube is sleeved to fix it. However, this structure also has obvious disadvantages. For example, cotton itself is a polymer material with poor heat resistance. When heated and atomized, the heating element directly contacts the cotton, which is easy to damage the cotton, resulting in problems such as burnt cotton, unstable suction effect, and even failure of the cotton core product.

[0004] In response to the problems of the cotton core, the existing solution is to fix a metal mesh on the inner wall of a high-temperature-resistant porous ceramic tube, so that the atomization liquid first transfers from the wicking cotton to the porous ceramic, and then is heated and atomized at the interface between the porous ceramic and the metal mesh, thus avoiding the direct contact between the metal mesh and the cotton. However, there is a certain interface between the metal mesh and the porous ceramic matrix, and there are problems such as insufficient contact and easy peeling. Although it avoids the damage of the high temperature to the wicking cotton, there are still problems such as burnt cotton, unstable suction effect, and even failure caused by insufficient contact or peeling between the metal mesh and the porous ceramic matrix. Therefore, the reliability and consistency of its products are poor, and there is still much room for improvement. Summary of the Utility Model

[0005] Based on the above deficiencies, this application provides a through-hole porous carbon atomization core to replace the metal wire or metal mesh used in the existing cotton core, solve the problems of easy burning of cotton, burnt cotton, and unstable suction effect of the existing cotton core, and at the same time can reduce harmful substances such as aldehydes and ketones in the atomized aerosol and avoid the release of metal ions. It also does not have problems such as insufficient contact and easy peeling between the metal mesh heating element and the liquid-conducting porous ceramic matrix existing in the porous ceramic atomization core.

[0006] This application is implemented as follows:

[0007] In the first aspect, the example of the present application provides a through-type porous carbon atomization core, including a porous carbon body and an electrode: the porous carbon body has an integrated base portion and a heating portion, the resistivity of the heating portion is smaller than the resistivity of the base portion, and the heating portion and the base portion are both porous structures; the porous carbon body has a through portion that penetrates two opposite surfaces of the porous carbon body; the heating portion is located on the side wall of the through portion; and the electrode is electrically connected to the heating portion.

[0008] In the above implementation process, the porous carbon body is an integrated structure with a base part and a heating part, which can ensure that the heating part for heating the atomized liquid is not separated from the base part, and because the base part and the heating part are made of the same carbon material, the thermal expansion coefficient is consistent, and there will be no peeling or cracking due to thermal expansion and contraction, which can improve the reliability of the atomization core. The heating part is located on the side wall of the penetration part, so that the atomized aerosol generated by the heating part can be smoothly discharged to the smoke outlet surface, and the resistivity of the heating part is less than that of the base part, so that when the heating part and the base part of the integrated structure are connected to the electric field, the current is concentrated through the heating part to quickly generate heat, while the base part basically does not generate heat, ensuring that the heat is mainly used for atomization, thereby improving the atomization efficiency.

[0009] In combination with the first aspect, in an optional embodiment, a through portion is disposed inside the porous carbon body, or a plurality of through portions are disposed at intervals.

[0010] In the above implementation process, a plurality of penetration portions are arranged at intervals inside the porous carbon body, which can increase the atomization area, increase the amount of atomized smoke, and enhance the atomization taste.

[0011] In the above implementation process, the porous carbon body is provided with a through portion and a heating portion is provided on its side wall. The atomized liquid can not only reach the surface of the heating portion through the pores of the base portion, but also directly spread on the surface of the heating portion under the action of surface tension, thereby greatly improving the oil supply rate. It can replace the metal wire or metal mesh heating element and be used in conjunction with the oil-conducting cotton, but its heating portion is completely or basically not in contact with the oil-conducting cotton, thereby reducing or eliminating the problem of burning the cotton and sticking the core.

[0012] In combination with the first aspect, in an optional implementation, the shape of the penetration portion is selected from a polyhedron or a curved surface.

[0013] In combination with the first aspect, in an optional embodiment, the porous carbon body has a smoke outlet surface and a liquid absorption surface that are arranged opposite to each other, and the penetration portion penetrates the smoke outlet surface and the liquid absorption surface. The smoke outlet surface is the surface of the porous carbon body where the electrode is located, and the liquid absorption surface is the surface of the porous carbon body opposite to the smoke outlet surface. During use, the liquid absorption surface contacts the oil-conducting cotton, and the atomized liquid enters the porous carbon body at the liquid absorption surface, and is transmitted to the heating part through the pore structure of the porous carbon body to realize atomization, and the smoke is released and guided out from the smoke outlet surface.

[0014] In combination with the first aspect, in an alternative embodiment, the porosity of the porous carbon body is 10%-90%.

[0015] In the above implementation process, the porosity of the porous carbon body is 10%-90%. If the porosity is too small, it is not conducive to oil conduction. If the porosity is too large, the strength will decrease. The specific value depends on the requirements for the oil conduction rate and strength, achieving a balance between the oil conduction rate and strength.

[0016] In combination with the first aspect, in an alternative embodiment, only one through-hole may be provided inside the porous carbon body.

[0017] In the above implementation process, by providing only one through-hole, the heat can be more concentrated, so as to achieve atomization at a lower power. At the same time, it is also beneficial to miniaturization to meet the application requirements of different smoking device structures.

[0018] In the second aspect, an example of the present application provides an electronic atomizer, including the through-type porous carbon atomization core provided in the first aspect.

[0019] In the above implementation process, by disposing the through-type porous carbon atomization core provided in the first aspect in the electronic atomizer, the porous carbon body is an integrated structure with a base part and a heating part, which can prevent the heating part from being easily separated from the base part when heating the atomization liquid, improving the reliability of the atomization core. The resistivity of the heating part is less than that of the base part. When the heating part and the base part of the integrated structure are connected to an electric field, the current is concentrated through the heating part to quickly generate heat, while the base part basically does not generate heat, ensuring that the heat is mainly used for atomization and improving the atomization efficiency. The electronic atomizer further includes, but is not limited to, a liquid storage chamber, a conductive element, a control circuit, and a battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0021] Figure 1 FIG. 1 is a first structural schematic diagram of the through-type porous carbon atomization core provided by the embodiment of the present application;

[0022] Figure 2 FIG. 2 is a top perspective schematic diagram of the first structure of the through-type porous carbon atomization core provided by the embodiment of the present application;

[0023] Figure 3 FIG. 3 is a front perspective schematic diagram of the first structure of the through-type porous carbon atomization core provided by the embodiment of the present application;

[0024] Figure 4 FIG. 4 is a side perspective schematic diagram of the first structure of the through-type porous carbon atomization core provided by the embodiment of the present application;

[0025] Figure 5 It is the second structural schematic diagram of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0026] Figure 6 It is the top-down perspective schematic diagram of the second structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0027] Figure 7 It is the side-view perspective schematic diagram of the second structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0028] Figure 8 It is the third structural schematic diagram of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0029] Figure 9 It is the top-down perspective schematic diagram of the third structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0030] Figure 10 It is the side-view perspective schematic diagram of the third structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0031] Figure 11 It is the fourth structural schematic diagram of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0032] Figure 12 It is the top-down perspective schematic diagram of the fourth structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0033] Figure 13 It is the side-view perspective schematic diagram of the fourth structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0034] Figure 14 It is the fifth structural schematic diagram of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0035] Figure 15 It is the top-down perspective schematic diagram of the fifth structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0036] Figure 16 It is the front-view perspective schematic diagram of the fifth structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0037] Figure 17 It is the sixth structural schematic diagram of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0038] Figure 18 It is the top-down perspective schematic diagram of the sixth structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0039] Figure 19 Front perspective view of the sixth structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0040] Figure 20 Schematic diagram of the seventh structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0041] Figure 21 Top perspective view of the seventh structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0042] Figure 22 Front perspective view of the seventh structure of the through-hole porous carbon atomizing core provided by the embodiment of the present application;

[0043] Figure 23 Cross-sectional view of the electronic atomizer provided by the example of the present application.

[0044] Icons: 1-through-hole porous carbon atomizing core; 10-porous carbon body; 11-substrate part; 12-heating part; 13-through part; 14-channel; 20-electrode; 2-liquid storage chamber; 3-conductive element; 4-control circuit; 5-battery; 100-electronic atomizer. Detailed implementation manners

[0045] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0047] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0048] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0049] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application.

[0050] Currently, cotton cores generally use metal wires or metal meshes as heating elements. The metal wires or metal meshes are in direct contact with the oil-conducting cotton, and the oil-conducting cotton transfers the atomizing liquid to the surface of the metal wires or metal meshes for atomization. In this type of atomizing core, the metal wire or metal mesh heating element is in direct contact with the cotton, and problems such as cotton burning and core fouling are likely to occur, and there are also problems of dry burning due to the separation of the heating element from the cotton.

[0051] Therefore, the present application designs and develops a through-hole porous carbon atomizing core for the above problems of cotton cores, which can replace the metal wire or metal mesh heating element and be applied to cotton cores, thereby improving the atomization performance and stability of cotton cores. To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0052] Please refer to Figures 1 to 22 , the embodiments of the present application provide a through-hole porous carbon atomizing core 1.

[0053] The through-hole porous carbon atomizing core 1 includes a porous carbon body 10 and an electrode 20. The porous carbon body 10 has an integrated matrix part 11 and a heating part 12; the porous carbon body 10 has a through part 13 that penetrates through opposite two surfaces of the porous carbon body 10; the heating part 12 is located on the side wall of the through part 13; the electrode 20 is electrically connected to the heating part 12.

[0054] Among them, the heating part 12 being located on the side wall of the through part 13 means that: the heating part 12 is a thin layer near the side wall of the through part 13, and all the side walls of the through part 13 can be formed by the heating part 12, or only a part of all the side walls of the through part 13 is formed by the heating part 12. When the side wall part near the liquid absorption surface does not form the heating part 12, the heating part 12 is not in contact with the oil-conducting cotton at all.

[0055] The porous carbon body 10 has an integrated structure with a base part 11 and a heating part 12, and the resistivity of the heating part 12 is less than that of the base part 11. When the heating part 12 is electrically connected to the electrode 20, the current can be concentrated in the heating part 12, and only the heating part 12 heats the atomizing liquid to atomize it, while the base part 11 does not atomize the atomizing liquid.

[0056] Generally, the porous carbon body 10 with different resistivities can be prepared by the following method:

[0057] Mix the carbon source precursor and the pore-forming agent, and then carry out solidification and carbonization treatment. During the process, the pore-forming agent is removed by dissolution washing or thermal decomposition method to obtain a porous carbon blank; use a machining method to make a through hole 13, and perform rapid surface heating or laser irradiation on the side wall of the through hole 13 to increase the degree of carbonization or graphitization of the thin layer near the side wall surface, so as to greatly reduce its resistivity and form the heating part 12; alternatively, use a laser processing method to make the through hole 13, and the heating effect of the laser during the processing graphitizes the thin layer near the side wall of the through hole 13, realizing a significant reduction in its resistivity and forming the heating part 12. The part other than the heating part 12 is the base part 11, and the heating part 12 and the base part 11 are an integrated structure.

[0058] The main component of the porous carbon blank is carbon, and the carbon content is greater than 60%.

[0059] The resistivity of the heating part 12 is much less than that of the base part 11, which enables the heating part 12 and the base part 11 of the integrated structure to concentrate the current to quickly generate heat when connected to the electric field, while the base part 11 hardly generates heat.

[0060] In some possible embodiments, the porosity of the porous carbon body 10 is 10% - 90%.

[0061] Exemplarily, the porosity of the porous carbon body 10 can be selected from one of 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80% or 90% or the range between any two of them.

[0062] The porous carbon body 10 has a through hole 13 penetrating two opposite surfaces of the porous carbon body 10. The through hole 13 is arranged in the porous carbon body 10, and the heating part 12 is located on the side wall of the through hole 13. The atomized aerosol formed by the heating part 12 heating the atomizing liquid can be discharged through the through hole 13.

[0063] Further, a method of providing a through portion 13 within the porous carbon body 10 and disposing the heating portion 12 on the sidewall of the through portion 13 includes, but is not limited to, mechanically opening a hole in the porous carbon body 10 to form the through portion 13, and then subjecting the sidewall of the through portion 13 to laser treatment or local resistance heating to form the heating portion 12; or laser-drilling the porous carbon body 10 to obtain a sidewall that is laser-heated during the formation of the through portion 13 to form the heating portion 12.

[0064] The present application does not limit the shapes of the porous carbon body 10 and the through portion 13. In some possible embodiments, the outer shape of the porous carbon body 10 and the shape of the through portion 13 can independently be selected from a polyhedron or a curved surface body.

[0065] Exemplarily, refer to Figures 1 to 4 , where the outer shape of the porous carbon body 10 and the shape of the through portion 13 are both selected from a cuboid.

[0066] Exemplarily, refer to Figures 5 to 7 , where the outer shape of the porous carbon body 10 can be selected from a cuboid, and the shape of the through portion 13 can be selected from a cylinder.

[0067] Exemplarily, refer to Figures 11 to 13 , where the outer shape of the porous carbon body 10 is selected from a cylinder.

[0068] Further, in some possible embodiments, the entire sidewall of the through portion 13 is the heating portion 12.

[0069] Further, in some possible embodiments, a plurality of through portions 13 are spaced apart within the porous carbon body 10.

[0070] Exemplarily, refer to Figures 8 to 10 , where two through portions 13 are spaced apart within the porous carbon body 10, and the sidewall of each through portion 13 is the heating portion 12.

[0071] Further, in some possible embodiments, a channel 14 is provided within the porous carbon body 10. The channel 14 communicates with the through portion 13.

[0072] Exemplarily, refer to Figures 11 to 13 , where two through portions 13 and a channel 14 extending axially are provided inside the porous carbon body 10.

[0073] Exemplarily, refer to Figures 14 to 16 , where four through portions 13 are circumferentially and uniformly spaced apart inside the porous carbon body 10, and a channel 14 extending circumferentially is provided. The electrode 20 is located on the outer walls at the top and bottom of the porous carbon body 10.

[0074] Exemplarily, refer to Figures 17 to 19, four through portions 13 evenly spaced circumferentially and a channel 14 extending axially are provided inside the porous carbon body 10. The electrodes 20 are located on the inner walls of the top and bottom ends of the porous carbon body 10.

[0075] Exemplarily, please refer to Figures 20 to 22 , four through portions 13 evenly spaced circumferentially and a channel 14 extending axially are provided inside the porous carbon body 10. The electrodes 20 are located on the outer walls of the top and bottom ends of the porous carbon body 10. The through portion 13 penetrates the upper end surface of the porous carbon body 10.

[0076] The electrodes 20 can be made on the ends of the porous carbon body 10 by methods such as screen printing, pad printing, dispensing, brushing, coating or welding, and are electrically connected to the heating portion 12.

[0077] Please refer to Figure 23 , an embodiment of the present application provides an electronic atomizer 100, which includes a liquid storage chamber 2 and a conductive element 3.

[0078] The through-type porous carbon atomization core 1 is placed inside the liquid storage chamber 2, and the conductive element 3 is connected to the electrode 20.

[0079] Exemplarily, the electronic atomizer 100 further includes a control circuit 4 and a battery 5. The control circuit 4 is electrically connected to the battery 5, the through-type porous carbon atomization core 1 is electrically connected to the control circuit 4 through the conductive element 3, and the control circuit 4 controls the battery 5 to output power to the through-type porous carbon atomization core 1.

[0080] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A through-hole porous carbon atomizing core, characterized in that, Comprising: A porous carbon body having an integrated matrix portion and a heating portion, wherein the resistivity of the heating portion is less than that of the matrix portion, and both the heating portion and the matrix portion are porous structures; a through portion penetrating through opposite two surfaces of the porous carbon body is provided in the porous carbon body; the heating portion is located on the side wall of the through portion; An electrode electrically connected to the heating portion.

2. The through-hole porous carbon atomization core according to claim 1, characterized in that One through portion is provided inside the porous carbon body or a plurality of through portions are provided at intervals.

3. The through-hole porous carbon atomizing core according to claim 1, characterized in that The shape of the through portion is selected from a polyhedron or a curved surface body.

4. The through-hole porous carbon atomizing core according to claim 1, characterized in that, The porous carbon body has a smoke outlet surface and a liquid absorption surface disposed opposite to each other, and the through portion penetrates through the smoke outlet surface and the liquid absorption surface.

5. The through-hole porous carbon atomizing core according to claim 4, characterized in that, The smoke outlet surface is the surface of the porous carbon body where the electrode is located, and the liquid absorption surface is the surface of the porous carbon body opposite to the smoke outlet surface.

6. The through-hole porous carbon atomizing core according to claim 1, wherein, The porosity of the porous carbon body is 10%-90%.

7. An electronic atomizer, characterized in that, Including the through-type porous carbon atomization core according to any one of claims 1-6.

Images