Electronic atomization device, atomizer, atomization core and method for manufacturing the atomization core

Abstract

The present application provides an electronic atomization device, an atomizer, an atomization core and a method for manufacturing the atomization core. The atomization core includes a liquid guide and a heating element. The liquid guide has an atomization surface and a liquid absorption surface. The substrate to be atomized is transferred from the liquid absorption surface to the atomization surface. The heating element is arranged on the atomization surface for heating and atomizing the substrate to be atomized. The liquid guide includes an infrared radiation part, which has an atomization surface. The infrared radiation part is used to absorb the heat released by the heating element to radiate infrared rays to preheat the substrate to be atomized in the liquid guide. The present application provides an infrared radiation part on the liquid guide, and the atomization surface is on the surface of the infrared radiation part, so that the infrared radiation part can absorb the heat released by the heating element, and then radiate infrared rays to the outer wall or outer surface of the liquid guide to preheat the substrate to be atomized around the heating element. This can not only improve the thermal energy utilization rate of the heating element, but also speed up the transmission rate of the substrate to be atomized, prevent the heating element from dry burning, and improve the taste of the user.

Description

Technical Field

[0001] The present application relates to the technical field of electronic atomizers, and in particular to an electronic atomization device, an atomizer, an atomization core, and a method for manufacturing the atomization core. Background Art

[0002] The aerosol generated by the combustion of the atomized matrix contains dozens of carcinogens, such as tar, which are very harmful to human health. Moreover, the aerosol diffuses in the air and forms harmful substances, which can also cause harm to the body when inhaled by people around. Therefore, in order to meet the needs of some users, electronic atomization devices came into being.

[0003] The atomizer core of the existing electronic atomization device has low atomization efficiency for high-viscosity atomization matrices. On the other hand, when atomizing high-viscosity atomization matrices, the existing atomizer core products have the problem of high temperature of the heating element on the inner wall or surface of the atomizer core, which will bring users a poor taste experience and may even cause dry burning and produce impure gas, burnt smell, etc. Summary of the invention

[0004] The main technical problem solved by the present application is to provide an electronic atomization device, an atomizer, an atomization core and a method for manufacturing the atomization core, so as to solve the problems of low atomization efficiency of high-viscosity atomization matrix and poor taste for users in the prior art.

[0005] In order to solve the above technical problems, the first technical solution adopted in the present application is: to provide an atomization core, the atomization core includes: a liquid guiding part, having an atomizing surface and a liquid absorbing surface, and the matrix to be atomized is transferred from the liquid absorbing surface to the atomizing surface; a heating element, which is arranged on the atomizing surface and is used to heat and atomize the matrix to be atomized; wherein the liquid guiding part includes an infrared radiation part, the infrared radiation part has an atomizing surface, and the infrared radiation part is used to absorb the heat released by the heating element to radiate infrared rays to preheat the matrix to be atomized in the liquid guiding part.

[0006] The infrared radiation part includes a porous infrared matrix, and the porous infrared matrix serves as the infrared radiation part. The thickness of the porous infrared matrix is ​​0.2 mm to 3 mm.

[0007] Among them, the liquid-conducting part also includes a porous non-infrared matrix, the porous non-infrared matrix is ​​fixedly connected to the infrared radiation part, the surface of the porous non-infrared matrix away from the infrared radiation part serves as a liquid absorption surface, and the surface of the infrared radiation part away from the porous non-infrared matrix serves as an atomization surface. The infrared radiation part is a porous infrared matrix or an infrared radiation coating. The thickness of the infrared radiation part is 0.01 mm to 0.5 mm, and the thickness of the porous non-infrared matrix is ​​0.2 mm to 3 mm. The material of the infrared radiation part is porous infrared ceramics, and the material of the porous non-infrared matrix is ​​porous non-infrared ceramics. The pore size of the porous infrared ceramics and the porous non-infrared ceramics is 10 microns to 100 microns, and the porosity is 40% to 70%.

[0008] Among them, the liquid guiding member is a hollow tubular body, one of the inner side and the outer side of the hollow tubular body is used as an atomization surface, and the other is used as a liquid absorption surface; or the liquid guiding member is a plate body, one of the two opposite surfaces of the plate body is used as an atomization surface, and the other surface is used as a liquid absorption surface.

[0009] The radiation temperature of the infrared radiation part is 45°C to 95°C.

[0010] The infrared radiation part is a porous infrared matrix, and the materials forming the porous infrared matrix include a first powder and a first solvent. The first powder includes infrared ceramic powder, a first sintering aid and a first pore-forming agent; the first sintering aid accounts for 1% to 40% of the mass of the first powder, and the mass percentage of the first pore-forming agent does not exceed twice the total mass of the infrared ceramic powder and the first sintering aid; the first solvent includes a first solvent, a dispersant, a first binder, a first plasticizer and a coupling agent, and the first solvent accounts for 80% to 150% of the mass of the first powder; the first binder accounts for 5% to 20% of the mass of the first powder; the dispersant accounts for 0.1% to 5% of the mass of the first powder; the first plasticizer accounts for 40% to 70% of the mass of the first binder; and the coupling agent accounts for 0% to 2% of the mass of the first powder. Among them,

[0011] The material forming the porous infrared matrix also includes a second powder and an additive, the second powder accounts for 55%-80% of the total mass of the second powder and the additive, the second powder includes infrared ceramic powder, a second sintering additive and a second pore-forming agent; the second sintering additive accounts for 2% to 40% of the mass of the second powder, and the second pore-forming agent accounts for 5% to 80% of the mass of the second powder; the additives include a skeleton forming agent, a second surfactant, a second plasticizer and a second binder, the skeleton forming agent accounts for 50% to 90% of the mass of the additive; the second surfactant accounts for 1% to 10% of the mass of the additive; the second plasticizer accounts for 1% to 20% of the mass of the additive; the second binder accounts for 10% to 40% of the mass of the second powder.

[0012] The infrared radiation part is an infrared radiation coating, and the materials forming the infrared radiation coating include a third powder and a third solvent. The third powder includes infrared ceramic powder, a bonding phase and a third pore-forming agent; the bonding phase accounts for 1% to 40% of the mass of the third powder, and the mass percentage of the third pore-forming agent does not exceed one times the total mass of the infrared ceramic powder and the bonding phase; the third solvent includes a third solubilizer, a third thickener, a third surfactant, a thixotropic agent and a casting control agent; the third solubilizer accounts for 55% to 99% of the mass of the third solvent; the third thickener accounts for 1% to 20% of the mass of the third solvent; the third surfactant accounts for 1% to 10% of the mass of the third solvent; the thixotropic agent accounts for 0.1% to 5% of the mass of the third solvent; the casting control agent accounts for 0.1% to 10% of the mass of the third solvent.

[0013] In order to solve the above technical problems, the second technical solution adopted in the present application is: to provide an atomizer, the atomizer includes the above atomization core.

[0014] In order to solve the above technical problems, the third technical solution adopted in the present application is: to provide an electronic atomization device, the electronic atomization device includes a power supply component and the above atomizer, and the power supply component supplies power to the atomizer.

[0015] In order to solve the above technical problems, the fourth technical solution adopted by the present application is: to provide a method for manufacturing an atomizer core, the method for manufacturing an atomizer core comprising:

[0016] preparing a porous sheet green embryo, wherein the porous sheet green embryo comprises a porous infrared layer;

[0017] Producing a heating element preform on the porous infrared layer;

[0018] Forming a first layer structure by placing a porous sheet green body having a preform of a heating element on a mold;

[0019] Prepare a second layer structure on a side of the first layer structure away from the preform of the heating element;

[0020] The mold is removed, and the first layer structure, the second layer structure and the heating element preform are sintered as a whole.

[0021] The steps of preparing the porous sheet embryo include:

[0022] Prepare a first slurry from raw materials for forming a porous infrared layer;

[0023] The first slurry is made into a porous infrared layer through a casting process.

[0024] The steps of preparing the porous sheet embryo include:

[0025] Prepare a first slurry from a raw material for forming a porous non-infrared layer;

[0026] The first slurry is formed into a porous non-infrared layer by a casting process;

[0027] The porous infrared layer is formed by coating an infrared radiation coating on one surface of the porous non-infrared layer.

[0028] The steps of preparing a preform of a heating element on a porous infrared layer include:

[0029] The heating element preform is prepared by any method including sputtering, evaporation, silk screen printing, coating and inkjet printing.

[0030] The step of forming a first layer structure of the porous sheet green body on a mold comprises:

[0031] The porous sheet green body is wound on a mold to form a prefabricated inner tube, and the prefabricated heating element is arranged on the inner wall of the prefabricated inner tube;

[0032] The step of preparing a second layer structure on a side of the first layer structure away from the heat generating element preform comprises:

[0033] A prefabricated outer tube is formed outside the predicted inner tube.

[0034] The step of forming a first layer structure of the porous sheet green body on a mold comprises:

[0035] Laying the porous sheet green body flat in the mold to form a first layer structure, and arranging the heating element preform on the surface of the first layer structure facing the bottom surface of the mold;

[0036] The step of preparing a second layer structure on a side of the first layer structure away from the heat generating element preform comprises:

[0037] A second layer structure is formed on a side of the first layer structure away from the heat generating element preform.

[0038] The step of preparing the second layer structure on the side of the first layer structure away from the preform of the heating element comprises:

[0039] preparing a second slurry from a raw material for forming a second layer structure;

[0040] The second slurry is injected into the side of the first layer structure away from the preform of the heating element, and the inner wall surface of the second layer structure is in close contact with the surface of the side of the first layer structure away from the preform of the heating element.

[0041] The step of removing the mold and sintering the first layer structure, the second layer structure and the heating element preform as a whole comprises:

[0042] The second layer structure, the first layer structure and the preform of the heating element placed in the mold are placed in a static state under normal pressure;

[0043] Removing the mold along the longitudinal direction of the second layer structure and / or the first layer structure;

[0044] The second layer structure, the first layer structure and the heating element preform are subjected to a debinding treatment at 350°C-800°C as a whole;

[0045] In an air atmosphere, the first layer structure, the second layer structure and the heating element preform are sintered as a whole at 850° C. to 1500° C. under normal pressure.

[0046] The raw materials for forming the first slurry include a first powder and a first solvent, the first powder includes infrared ceramic powder, a first sintering aid and a first pore-forming agent; the first sintering aid accounts for 1% to 40% of the mass of the first powder, and the mass percentage of the first pore-forming agent does not exceed twice the total mass of the infrared ceramic powder and the first sintering aid; the first solvent includes a first solvent, a dispersant, a first binder, a first plasticizer and a coupling agent, the first solvent accounts for 80% to 150% of the mass of the first powder; the first binder accounts for 5% to 20% of the mass of the first powder; the dispersant accounts for 0.1% to 5% of the mass of the first powder; the first plasticizer accounts for 40% to 70% of the mass of the first binder; the coupling agent accounts for 0% to 2% of the mass of the first powder.

[0047] The raw materials for forming the infrared radiation coating include a third powder and a third solvent, the third powder includes infrared ceramic powder, a bonding phase and a third pore-forming agent; the bonding phase accounts for 1% to 40% of the mass of the third powder, and the mass percentage of the third pore-forming agent does not exceed one times the total mass of the infrared ceramic powder and the bonding phase; the third solvent includes a third solubilizer, a third thickener, a third surfactant, a thixotropic agent and a casting control agent; the third solubilizer accounts for 55% to 99% of the mass of the third solvent; the third thickener accounts for 1% to 20% of the mass of the third solvent; the third surfactant accounts for 1% to 10% of the mass of the third solvent; the thixotropic agent accounts for 0.1% to 5% of the mass of the third solvent; and the casting control agent accounts for 0.1% to 10% of the mass of the third solvent.

[0048] The raw materials for forming the second slurry include a second powder and an additive, the second powder accounts for 55%-80% of the total mass of the second powder and the additive, the second powder includes infrared ceramic powder, a second sintering aid and a second pore-forming agent; the second sintering aid accounts for 2% to 40% of the mass of the second powder, and the second pore-forming agent accounts for 5% to 80% of the mass of the second powder; the additives include a skeleton forming agent, a second surfactant, a second plasticizer and a second binder, the skeleton forming agent accounts for 50% to 90% of the mass of the additive; the second surfactant accounts for 1% to 10% of the mass of the additive; the second plasticizer accounts for 1% to 20% of the mass of the additive; the second binder accounts for 10% to 40% of the mass of the second powder.

[0049] The beneficial effects of the present application are as follows: different from the prior art, an electronic atomization device, an atomizer, an atomization core and a method for manufacturing the atomization core are provided, wherein the atomization core comprises a liquid guiding part and a heating part, wherein the liquid guiding part has an atomizing surface and a liquid absorbing surface, and the substrate to be atomized is transferred from the liquid absorbing surface to the atomizing surface; the heating part is arranged on the atomizing surface, and is used to heat and atomize the substrate to be atomized; wherein the liquid guiding part comprises an infrared radiation part, which has an atomizing surface, and is used to absorb heat released by the heating part, so as to radiate infrared rays to preheat the substrate to be atomized in the liquid guiding part. The present application arranges an infrared radiation part on the liquid guiding part, and the atomizing surface is on the surface of the infrared radiation part, so that the infrared radiation part can absorb the heat released by the heating element, and then radiate infrared rays to the outer wall or outer surface of the liquid guiding part to preheat the substrate to be atomized around the heating element. This can not only improve the thermal energy utilization rate of the heating element, but also accelerate the transmission rate of the substrate to be atomized, and increase the liquid supply amount of the substrate to be atomized to the atomizing surface, thereby effectively avoiding the dry burning phenomenon of the atomizing core; it can also increase the content of the aerosol formed after the substrate to be atomized is atomized, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0051] Figure 1 It is a structural schematic diagram of an embodiment of the electronic atomization device provided by the present application;

[0052] Figure 2 It is a structural schematic diagram of an embodiment of an atomizer in an electronic atomization device provided by the present application;

[0053] Figure 3 It is a structural schematic diagram of an embodiment of the atomizer core provided by the present application;

[0054] Figure 4It is a structural schematic diagram of another embodiment of the atomizer core provided by the present application;

[0055] Figure 5 yes Figure 3 A schematic diagram of the longitudinal cross-section structure of the first embodiment of the atomizer core provided in;

[0056] Figure 6 yes Figure 4 A schematic structural diagram of a first embodiment of an atomizer core provided in;

[0057] Figure 7 yes Figure 3 A schematic diagram of the longitudinal cross-section structure of the second embodiment of the atomizer core provided in;

[0058] Figure 8 yes Figure 4 A schematic structural diagram of a second embodiment of the atomizer core provided in;

[0059] Fig. 9 yes Figure 3 A schematic diagram of the longitudinal cross-section structure of the third embodiment of the atomizer core provided in;

[0060] Fig.10 yes Figure 4 A schematic structural diagram of a third embodiment of the atomizer core provided in;

[0061] Fig.11 It is a schematic diagram of a process of an embodiment of a method for manufacturing an atomizer core provided by the present application;

[0062] Figure 12(a) is Fig.11 A structural schematic diagram of the first embodiment corresponding to step S1 of the provided method for manufacturing the atomizer core;

[0063] Figure 12(b) is Fig.11 A structural schematic diagram of the second embodiment corresponding to step S1 of the provided method for manufacturing an atomizer core;

[0064] Figure 13(a) is Fig.11 A structural schematic diagram of the first embodiment corresponding to step S2 of the provided method for manufacturing the atomizer core;

[0065] Figure 13(b) is Fig.11 A structural schematic diagram of the second embodiment corresponding to step S2 of the provided method for manufacturing the atomizer core;

[0066] Figure 14(a) is Fig.11 A structural schematic diagram of the first embodiment corresponding to step S3 of the provided method for manufacturing the atomizer core;

[0067] Figure 14(b) is Fig.11 A structural schematic diagram of the second embodiment corresponding to step S3 of the provided method for manufacturing the atomizer core;

[0068] Figure 15(a) is Fig.11 A structural schematic diagram of the first embodiment corresponding to step S4 of the provided method for manufacturing the atomizer core;

[0069] Figure 15(b) is Fig.11 A structural schematic diagram of the second embodiment corresponding to step S4 of the method for manufacturing an atomizer core is provided. DETAILED DESCRIPTION

[0070] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0071] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the embodiments of the present application, all directional indications (such as inside, outside, up, down, left, right, front, back ...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0072] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0073] See also Figure 1 , Figure 1 It is a structural schematic diagram of an embodiment of the electronic atomization device provided in the present application.

[0074] like Figure 1As shown, the electronic atomization device 100 can be used for atomization of liquid substrates. The electronic atomization device 100 includes an atomizer 1 and a power supply assembly 2 that are interconnected. The atomizer 1 is used to store the substrate to be atomized and atomize the substrate to be atomized to form an aerosol that can be inhaled by the user. The substrate to be atomized can be a liquid substrate such as a liquid medicine, a plant leaf liquid, etc.; the atomizer 1 can be used in different fields, such as medical, beauty, electronic aerosolization, etc. The power supply assembly 2 includes a battery (not shown), an airflow sensor (not shown), and a controller (not shown), etc.; the battery is used to power the atomizer 1 so that the atomizer 1 can atomize the substrate to be atomized to form an aerosol; the airflow sensor is used to detect the airflow change in the electronic atomization device 100, and the controller starts the electronic atomization device 100 according to the airflow change detected by the airflow sensor. The atomizer 1 and the power supply assembly 2 can be fixed, such as welding connection, integral manufacturing, etc.; or they can be detachably connected, such as snap connection, threaded connection, magnetic connection, etc., and are designed according to specific needs. Of course, the electronic atomization device 100 also includes other components in the existing electronic atomization device 100, such as a microphone, a bracket, etc. The specific structures and functions of these components are the same or similar to those in the prior art. For details, please refer to the prior art and will not be described one by one here.

[0075] See also Figure 2 , Figure 2 It is a structural schematic diagram of an embodiment of an atomizer in the electronic atomization device provided in the present application.

[0076] like Figure 2 As shown, the atomizer 1 includes a nozzle 10, a shell 11, and an atomizing core 12. The nozzle 10 is connected to the shell 11. The user inhales the aerosol from the nozzle 10. The shell 11 has a liquid storage chamber 111 and an air outlet channel 13. The liquid storage chamber 111 is used to store the matrix to be atomized. The liquid storage chamber 111 has a liquid outlet (not shown), and the matrix to be atomized in the liquid storage chamber 111 flows from the liquid outlet to the atomizing core 12 for heating and atomization by the atomizing core 12. The atomizing core 12 is arranged at the liquid outlet of the liquid storage chamber 111. The atomizing core 12 is used to atomize the matrix to be atomized stored in the liquid storage chamber 111. The air outlet channel 13 is communicated with the nozzle 10. In one embodiment, the atomizing core 12 is at least partially accommodated in the shell 11, and the atomizing core 12 is provided with an atomizing chamber 14, and the atomizing chamber 14 is communicated with the air outlet channel 13. The aerosol formed by the atomizing core 12 heating and atomizing the substrate to be atomized reaches the nozzle 10 through the air outlet channel 13 to be inhaled by the user. Among them, the atomizing core 12 is electrically connected to the power supply assembly 2 to heat and atomize the substrate to be atomized. In this embodiment, the cross-sectional area of ​​the shell 11 perpendicular to the central axis of the atomizer 1 is circular. It should be understood that in other embodiments, the cross-sectional area of ​​the shell 11 perpendicular to the central axis of the atomizer 1 can be rectangular, elliptical, trapezoidal, triangular or other shapes, which are designed according to specific needs.

[0077] See also Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure of an embodiment of the atomizer core provided by the present application. Figure 4 It is a structural schematic diagram of another embodiment of the atomizer core provided in the present application.

[0078] The atomizing core 12 includes a liquid guide 20 and a heating element 30 disposed on the liquid guide 20. The liquid guide 20 has an atomizing surface 21 and a liquid absorbing surface 22. The liquid guide 20 transfers the substrate to be atomized from the liquid absorbing surface 22 to the atomizing surface 21, and is heated and atomized by the heating element 30 to form an aerosol.

[0079] The heating element 30 is arranged on the atomizing surface 21 of the liquid guide 20, and the heating element 30 is used to heat and atomize the substrate to be atomized that is guided to the atomizing surface 21. In a specific embodiment, the heating element 30 includes an S-shaped heating circuit, or a ring-shaped heating circuit. Among them, the heating element 30 includes a heating film, and the metal component of the heating film includes at least one of platinum, gold, silver, silver palladium, and silver platinum. The heating element 30 also includes an electrode 25, and the electrode 25 is connected to both ends of the heating element 30.

[0080] The liquid guide 20 includes an infrared radiation portion 23, and the atomizing surface 21 is arranged on the infrared radiation portion 23 of the liquid guide 20. By providing the infrared radiation portion 23, the heat loss released by the heating element 30 can be reduced and the thermal energy utilization rate can be improved. The infrared radiation portion 23 can absorb the heat released by the heating element 30 and radiate infrared rays to preheat the substrate to be atomized in the liquid guide 20. In order to better preheat the substrate to be atomized in the liquid guide 20, the radiation temperature of the infrared radiation portion 23 is 45°C to 95°C. When the high-viscosity substrate to be atomized in the liquid-conducting member 20 is preheated, the temperature of the high-viscosity substrate to be atomized increases, and the viscosity of the substrate to be atomized decreases, thereby accelerating the transmission rate of the substrate to be atomized, so that the substrate to be atomized can reach the atomization surface 21 faster and be heated and atomized by the heating element 30, that is, the atomization efficiency is high, the amount of aerosol will increase, and the user's taste is improved; at the same time, when the atomization substrate is sufficient, it can be ensured that the substrate to be atomized on the atomization surface 21 is continuously heated and atomized by the heating element 30, which can avoid the temperature increase of the heating element 30, reduce the risk of dry burning, and make the smoking taste pure.

[0081] The liquid guide 20 at least includes an infrared radiation portion 23. In one embodiment, the liquid guide 20 includes only the infrared radiation portion 23. In another embodiment, the liquid guide 20 includes the infrared radiation portion 23 and a porous non-infrared substrate 24 disposed on a side of the infrared radiation portion 23 away from the atomizing surface 21. The material of the infrared radiation portion 23 is a porous infrared ceramic or an infrared radiation coating 232, and the material of the porous non-infrared substrate 24 is a porous non-infrared ceramic, and the pore size of the porous infrared ceramic and the porous non-infrared ceramic are both 10 microns to 100 microns, and the porosity is 40% to 70%.

[0082] In a specific embodiment, if Figure 3 As shown, the liquid-guiding member 20 can be a hollow tubular body, such as a hollow cylinder, one of the inner surface and the outer surface of the hollow tubular body is an atomizing surface 21, and the other is a liquid absorbing surface 22, and the heating element 30 is arranged on the atomizing surface 21. In the present embodiment, the inner surface of the hollow tubular body serves as the atomizing surface 21, the outer surface of the hollow tubular body serves as the liquid absorbing surface 22, and the heating element 30 is arranged on the inner wall surface of the hollow tubular body. The atomizing surface 21 of the hollow tubular body is surrounded to form an atomizing chamber 14. The electrode 25 is led out from one end of the atomizing chamber 30 away from the air outlet channel 13. In other embodiments, the electrode 25 can be led out from the two end surfaces perpendicular to the atomizing surface 21 and the liquid absorbing surface 22 of the hollow tubular body. In another specific embodiment, as Figure 4 As shown, the liquid guide member 20 can be a plate body, the heating element 30 is arranged on a surface of the plate body, the surface of the plate body where the heating element 30 is arranged serves as the atomizing surface 21 , and the surface of the plate body opposite to the atomizing surface 21 serves as the liquid absorbing surface 22 .

[0083] See also Figure 5 and Figure 6 , Figure 5 yes Figure 3 A schematic diagram of the longitudinal cross-section structure of the first embodiment of the atomizer core provided in; Figure 6 yes Figure 4 A structural schematic diagram of the first embodiment of the atomizer core provided in FIG.

[0084] Specifically, the liquid guide member 20 includes a first layer structure 50 and a second layer structure 60, and the first layer structure 50 and the second layer structure 60 are fixedly connected. The first layer structure 50 is arranged close to the heating element 30, that is, the surface of the first layer structure 50 away from the second layer structure 60 is the atomization surface 21, and the surface of the second layer structure 60 away from the first layer structure 50 is the liquid absorption surface 22. In a specific embodiment, the first layer structure 50 and the second layer structure 60 can match each other, and after sintering, the first layer structure 50 and the second layer structure 60 can be attached to each other to form an integrated structure.

[0085] In a specific embodiment, the liquid guide 20 includes an infrared radiation portion 23, and the infrared radiation portion 23 only includes a porous infrared matrix 231. That is, the first layer structure 50 and the second layer structure 60 are both porous infrared matrix 231 and serve together as the infrared radiation portion 23. A heating element 30 is provided on one surface of the porous infrared matrix 231, and the surface of the porous infrared matrix 231 provided with the heating element 30 serves as an atomizing surface 21, and the surface of the porous infrared matrix 231 opposite to the atomizing surface 21 serves as a liquid absorbing surface 22. Among them, the thickness of the infrared radiation portion 23 is 0.2 mm to 3 mm, that is, the thickness of the liquid guide 20 is 0.2 mm to 3 mm, that is, the distance between the atomizing surface 21 of the porous infrared matrix 231 and the liquid absorbing surface 22 opposite to the atomizing surface 21 is 0.2 mm to 3 mm. When the infrared radiation part 23 is too thin, the liquid guiding speed will be too fast, resulting in the substrate to be atomized being not heated and atomized by the heating element 30 in time after being transferred to the atomization surface 21, and then the "liquid explosion" phenomenon will occur. When the infrared radiation part 23 is too thick, the infrared radiation penetration will be weakened, thereby weakening the preheating effect of the infrared radiation part 23; the preheating effect of the infrared radiation part 23 will be poor, and the transmission efficiency of the high-viscosity substrate to be atomized will also be affected.

[0086] In this embodiment, the raw materials for forming the first layer structure 50 of the liquid guide 20 include a first powder and a first solvent. That is, the raw materials for forming the porous infrared matrix 231 of the first layer structure 50 include a first powder and a first solvent. The first powder includes infrared ceramic powder, a first sintering aid and a first pore-forming agent; the first sintering aid accounts for 1% to 40% of the mass of the first powder, and the mass percentage of the first pore-forming agent does not exceed twice the total mass of the infrared ceramic powder and the first sintering aid; the first solvent includes a first solvent, a dispersant, a first binder, a first plasticizer and a coupling agent, and the first solvent accounts for 80% to 150% of the mass of the first powder; the first binder accounts for 5% to 20% of the mass of the first powder; the dispersant accounts for 0.1% to 5% of the mass of the first powder; the first plasticizer accounts for 40% to 70% of the mass of the first binder; the coupling agent accounts for 0% to 2% of the mass of the first powder.

[0087] In a specific embodiment, the raw materials for forming the first layer structure 50 of the liquid guide member 20 include a first powder and a first solvent. The first solvent is composed of anhydrous ethanol with a mass percentage of 25% of the total mass of the first solvent, isobutyl alcohol with a mass percentage of 30.5% of the total mass of the first solvent, butyl acetate with a mass percentage of 20% of the total mass of the first solvent, oleic acid dispersant with a mass percentage of 1% of the total mass of the first solvent, polyvinyl acetal binder with a mass percentage of 15% of the total mass of the first solvent, dioctyl phthalate with a mass percentage of 4% of the total mass of the first solvent, dibutyl phthalate with a mass percentage of 4% of the total mass of the first solvent, and a silane coupling agent with a mass percentage of 0.5% of the total mass of the first solvent.

[0088] In this embodiment, the raw materials for forming the second layer structure 60 of the liquid guide 20 include a second powder and an additive. That is, the raw materials for forming the porous infrared matrix 231 of the second layer structure 60 include a second powder and an additive. The second powder accounts for 55%-80% of the total mass of the second powder and the additive, and the second powder includes infrared ceramic powder, a second sintering aid, and a second pore-forming agent; the second sintering aid accounts for 2% to 40% of the mass of the second powder, and the second pore-forming agent accounts for 5% to 80% of the mass of the second powder; the additive includes a skeleton forming agent, a second surfactant, a second plasticizer, and a second binder, and the skeleton forming agent accounts for 50% to 90% of the mass of the additive; the second surfactant accounts for 1% to 10% of the mass of the additive; the second plasticizer accounts for 1% to 20% of the mass of the additive; the second binder accounts for 10% to 40% of the mass of the second powder.

[0089] In a specific embodiment, the raw materials for forming the second layer structure 60 of the liquid guide member 20 include a second powder and an additive. The additive is composed of natural paraffin with a mass percentage of 65% of the total mass of the additive, stearic acid with a mass percentage of 1% of the total mass of the additive, phthalate plasticizer with a mass percentage of 10% of the total mass of the additive, polyethylene with a mass percentage of 10% of the total mass of the additive, and ethylene-vinyl acetate copolymer with a mass percentage of 14% of the total mass of the additive.

[0090] See also Figure 7 and Figure 8 , Figure 7 yes Figure 3 The longitudinal cross-sectional structure of the second embodiment of the atomizer core provided in FIG. Figure 8 yes Figure 4 A schematic structural diagram of a second embodiment of the atomizer core provided in FIG.

[0091] In one embodiment, the liquid guide 20 includes an infrared radiation portion 23 and a porous non-infrared matrix 24, the porous non-infrared matrix 24 is fixedly connected to the infrared radiation portion 23, the surface of the porous non-infrared matrix 24 away from the infrared radiation portion 23 is used as a liquid absorption surface 22, and the surface of the infrared radiation portion 23 away from the porous non-infrared matrix 24 is used as an atomization surface 21. The infrared radiation portion 23 is a porous infrared matrix 231 or an infrared radiation coating 232. That is, the liquid guide 20 includes a porous non-infrared matrix 24 and a porous infrared matrix 231; or the liquid guide 20 includes a porous non-infrared matrix 24 and an infrared radiation coating 232. In other words, at least part of the first layer structure 50 is the infrared radiation portion 23, and the second layer structure 60 is the porous non-infrared matrix 24. Among them, the thickness of the infrared radiation portion 23 is 0.01 mm to 0.5 mm. When the thickness of the infrared radiation portion 23 is too thin, the infrared heat radiation effect cannot be guaranteed, and when it is too thick, the manufacturing process requirements are more stringent and the cost is wasted. For example, it is not conducive to the infrared radiation part 23 being tightly wound on the mold. The thickness of the porous non-infrared matrix 24 is 0.2 mm to 3 mm. If the thickness of the porous non-infrared matrix 24 is too thin, the liquid guide speed will be too fast, resulting in the matrix to be atomized being transmitted to the atomization surface 21 not having time to be preheated by the infrared radiation part 23 and heated and atomized by the heating element 30, and then the "liquid explosion" phenomenon will occur. When the porous non-infrared matrix 24 is too thick, the radiation penetration of infrared rays will be weakened, thereby weakening the preheating effect of the infrared radiation part 23; the deterioration of the preheating effect of the infrared radiation part 23 and the excessive thickness of the porous non-infrared matrix 24 will also affect the transmission efficiency of the high-viscosity matrix to be atomized, resulting in the dry burning phenomenon of the heating element 30.

[0092] In a specific embodiment, the first layer structure 50 serves as the infrared radiation portion 23, and the second layer structure 60 is a porous non-infrared matrix 24. Specifically, the liquid guide 20 includes a porous infrared matrix 231 and a porous non-infrared matrix 24. The heating element 30 is arranged on a surface of the porous infrared matrix 231, and the porous non-infrared matrix 24 is arranged on a side of the porous infrared matrix 231 away from the heating element 30, and is fixedly connected to the porous infrared matrix 231. The surface of the porous non-infrared matrix 24 away from the porous infrared matrix 231 serves as the liquid absorption surface 22, and the surface of the porous infrared matrix 231 away from the porous non-infrared matrix 24 is provided with the heating element 30 and serves as the atomization surface 21. The thickness of the porous infrared matrix 231 is 0.01 mm to 0.5 mm, and the thickness of the porous non-infrared matrix 24 is 0.2 mm to 3 mm.

[0093] In this embodiment, the raw materials for forming the first layer structure 50 of the liquid guide member 30 include the first powder and the first solvent. In other words, the raw materials for forming the porous infrared matrix 231 of the first layer structure 50 include the first powder and the first solvent.

[0094] The raw materials for forming the second layer structure 60 of the liquid guide 20 include a fourth powder and an additive. That is, the raw materials for forming the porous non-infrared matrix 24 of the second layer structure 60 include a fourth powder and an additive. The fourth powder accounts for 55%-80% of the total mass of the fourth powder and the additive, and the fourth powder includes ordinary ceramic powder, a second sintering aid, and a second pore-forming agent; the second sintering aid accounts for 2% to 40% of the mass of the fourth powder, and the second pore-forming agent accounts for 5% to 80% of the mass of the fourth powder; the additive includes a skeleton forming agent, a second surfactant, a second plasticizer, and a second binder, and the skeleton forming agent accounts for 50% to 90% of the mass of the additive; the second surfactant accounts for 1% to 10% of the mass of the additive; the second plasticizer accounts for 1% to 20% of the mass of the additive; and the second binder accounts for 10% to 40% of the mass of the fourth powder. The auxiliary agent forming the porous non-infrared matrix 24 of the second layer structure 60 is the same as the auxiliary agent in the raw material forming the porous infrared matrix 231 of the second layer structure 60, and will not be described in detail here.

[0095] In a specific embodiment, the raw materials for forming the second layer structure 60 of the liquid guide member 20 include a fourth powder and an additive. The additive is composed of natural paraffin with a mass percentage of 55% of the total mass of the additive, polyethylene wax with a mass percentage of 15wt.% of the total mass of the additive, glycerol with a mass percentage of 2% of the total mass of the additive, phthalates with a mass percentage of 2% of the total mass of the additive, phosphates with a mass percentage of 6% of the total mass of the additive, polystyrene with a mass percentage of 8% of the total mass of the additive, and ethylene-ethyl acrylate copolymer with a mass percentage of 12% of the total mass of the additive.

[0096] See also Fig. 9 and Fig.10 , Fig. 9 yes Figure 3 The longitudinal cross-sectional structure diagram of the third embodiment of the atomizer core provided in the embodiment of FIG. Fig.10 yes Figure 4 A schematic structural diagram of the third embodiment of the atomizer core provided in FIG.

[0097] In a specific embodiment, the first layer structure 50 includes an infrared radiation coating 232 and a porous non-infrared matrix 24. The infrared radiation coating 232 serves as the infrared radiation portion 23, and the second layer structure 60 is the porous non-infrared matrix 24. The thickness of the infrared radiation coating 232 is less than the thickness of the porous infrared matrix 231. Specifically, the liquid guide 20 includes an infrared radiation coating 232 and a porous non-infrared matrix 24. The infrared radiation coating 232 is disposed on a surface of the porous non-infrared matrix 24, and the surface of the porous non-infrared matrix 24 on which the infrared radiation coating 232 is disposed serves as an atomizing surface 21, and the surface of the porous non-infrared matrix 24 away from the infrared radiation coating 232 serves as a liquid absorbing surface 22. The heating element 30 is disposed on the atomizing surface 21. The thickness of the infrared radiation coating 232 is 0.01 mm to 0.5 mm, and the thickness of the porous non-infrared matrix 24 is 0.2 mm to 3 mm.

[0098] In this embodiment, the raw materials for forming the infrared radiation coating 232 in the first layer structure 50 include a third powder and a third solvent. The third powder includes infrared ceramic powder, a binder phase and a third pore-forming agent; the binder phase accounts for 1% to 40% of the mass of the third powder, and the mass percentage of the third pore-forming agent does not exceed one times the total mass of the infrared ceramic powder and the binder phase; the third solvent includes a third solubilizer, a third thickener, a third surfactant, a thixotropic agent and a casting control agent; the third solubilizer accounts for 55% to 99% of the mass of the third solvent; the third thickener accounts for 1% to 20% of the mass of the third solvent; the third surfactant accounts for 1% to 10% of the mass of the third solvent; the thixotropic agent accounts for 0.1% to 5% of the mass of the third solvent; and the casting control agent accounts for 0.1% to 10% of the mass of the third solvent.

[0099] In a specific embodiment, the raw materials for forming the infrared radiation coating 232 in the first layer structure 50 include a third powder and a third solvent. The third powder is composed of 52% by mass of Zn-Mg-Al-Si cordierite system infrared ceramic powder, 20% by mass of glass powder, 5% by mass of kaolin, 5% by mass of albite, and 18% by mass of starch. The third solvent is composed of 60% by mass of pineol, 22.5% by mass of butyl carbitol acetate, 10% by mass of tributyl citrate, 5% by mass of ethyl cellulose, 1.5% by mass of Span 85, 0.5% by mass of hydrogenated castor oil and 0.5% by mass of furoic acid, based on the total mass of the third solvent.

[0100] In this embodiment, the raw materials for forming the porous non-infrared matrix 24 in the first layer structure 50 include a fifth powder and a first solvent, the fifth powder includes ordinary ceramic powder, a first sintering aid and a first pore-forming agent; the first sintering aid accounts for 1% to 40% of the mass of the fifth powder, and the mass percentage of the first pore-forming agent does not exceed twice the total mass of the ordinary ceramic powder and the first sintering aid; the first solvent includes a first solvent, a dispersant, a first binder, a first plasticizer and a coupling agent, the first solvent accounts for 80% to 150% of the mass of the fifth powder; the first binder accounts for 5% to 20% of the mass of the fifth powder; the dispersant accounts for 0.1% to 5% of the mass of the fifth powder; the first plasticizer accounts for 40% to 70% of the mass of the first binder; the coupling agent accounts for 0% to 2% of the mass of the fifth powder.

[0101] In this embodiment, the raw materials for forming the porous non-infrared matrix 24 in the second layer structure 60 include a fourth powder and an auxiliary agent.

[0102] In a specific embodiment, the infrared ceramic powder includes a cordierite system, a spinel system, a perovskite system and a magnetoplumbite system. According to the stability of the material emissivity changing with temperature, the thermal expansion coefficient and the thermal conductivity, a suitable infrared ceramic powder material system powder is selected. 2 Al 4 Si 5 O 18 As the main body, Li 2 O, ZnO, NiO, CoO, CuO, Fe 2 O 3 Cr 2 O 3 、TiO 2 、MnO 2 One or more transition metal oxides are mixed and fired; the spinel system is composed of MgO, MnO, NiO, ZnO, CuO, Al 2 O 3 Cr 2 O 3 , Fe 2 O 3 、MnO 2 、TiO 2 The perovskite series is made of La, Sr, Pr, Eu and other trivalent rare metal oxides and Fe, Cr, Mn, Al, Ti, Cu, Ca and other transition metal oxides. The magnetoplumbite system is made of XAl 12 O 19It is the main presenting form, and X is one or more of alkaline earth metals such as Mg, Mn, Fe, Ca, Sr (except Ba) or rare earth metal ions such as La, Ce, Pr, Nd, Er, Ho, etc.

[0103] The third solvent constituting the infrared radiation coating 232 includes one or more of pineol, butyl carbitol acetate, butyl cellosolve, tributyl citrate, ethylene glycol ethyl ether acetate, isopropyl alcohol or dibutyl phthalate; the third thickener includes cellulose and acrylic acid, specifically including one or more of ethyl cellulose, nitrocellulose, polyisobutylene, polyisobutylene polyethylene ethanol, polymethyl styrene or polymethyl methacrylate; the thixotropic agent includes one or more of castor oil, hydrogenated castor oil or organic bentonite; the third surfactant is often one or more of anhydrous ethanol, soybean lecithin or Span 85; the casting control agent includes one or more of terephthalic acid, ammonium sulfate or furoic acid.

[0104] In a specific embodiment, the common ceramic powder includes one or more of silicon dioxide, quartz powder, floating beads, diatomaceous earth, alumina, silicon carbide, magnesium oxide, kaolin, mullite, cordierite, zeolite or hydroxyapatite; the first sintering aid and the second sintering aid both include one or more of anhydrous sodium carbonate, anhydrous potassium carbonate, sodium feldspar, potassium feldspar, clay, kaolin, bentonite or glass powder; the first pore-forming agent and the second pore-forming agent both include one or more of sawdust, graphite powder, starch, flour, walnut powder, polystyrene balls or polymethyl methacrylate balls.

[0105] The atomizing core 12 in the atomizer 1 provided in this embodiment includes a liquid guiding member 20 and a heating member 30, wherein the liquid guiding member 30 has an atomizing surface 21 and a liquid absorbing surface 22, and the substrate to be atomized is transferred from the liquid absorbing surface 22 to the atomizing surface 21; the heating member 30 is arranged on the atomizing surface 21, and is used to heat and atomize the substrate to be atomized; wherein the liquid guiding member 20 includes an infrared radiation portion 23, and the infrared radiation portion 23 has an atomizing surface 21, and the infrared radiation portion 23 is used to absorb the heat released by the heating member 30, so as to radiate infrared rays to preheat the substrate to be atomized in the liquid guiding member 20. The present application sets an infrared radiation part 23 on the liquid guiding part 20, and the atomizing surface 21 is on the surface of the infrared radiation part 23, so that the infrared radiation part 23 can absorb the heat released by the heating element 30, and then radiate infrared rays to the outer wall or outer surface of the liquid guiding part 20 to preheat the substrate to be atomized around the heating element 30. This can not only improve the thermal energy utilization rate of the heating element 30, but also accelerate the transmission rate of the substrate to be atomized, and increase the liquid supply amount of the substrate to be atomized transmitted to the atomizing surface 21, thereby effectively avoiding the dry burning phenomenon of the atomizing core 12; it can also increase the content of the aerosol formed after the substrate to be atomized is atomized, thereby improving the user experience.

[0106] This embodiment provides a method for manufacturing an atomizer core 12 . Specifically, the method for manufacturing the atomizer core 12 includes the following steps.

[0107] See also Fig.11 and Figure 12, Fig.11 It is a schematic flow chart of an embodiment of a method for manufacturing an atomizer core provided in the present application.

[0108] S1: preparing a porous sheet green body; making a heating element preform on the porous sheet green body; wherein the porous sheet green body comprises a porous infrared layer.

[0109] Figure 12(a) is Fig.11 The structural schematic diagram of the first embodiment corresponding to step S1 of the manufacturing method of the atomizer core provided, FIG. 12( b ) is Fig.11 A structural schematic diagram of the second embodiment corresponding to step S1 of the method for manufacturing an atomizer core is provided.

[0110] Specifically, the raw material for forming the porous sheet green body 40 is made into a first slurry, and the first slurry is formed into a thin sheet-shaped porous sheet green body 40 through a casting process. The casting process refers to placing a slurry with fluidity on a supporting plane and forming a thin sheet with uniform thickness by scraping or rolling. The first slurry forms a porous infrared layer 41, as shown in FIG12(a).

[0111] In another embodiment, the first slurry is formed into a thin sheet-shaped porous non-infrared layer 42 through a casting process, and an infrared radiation coating 232 is coated on one surface of the porous non-infrared layer 42 to obtain a porous sheet green body 40. The infrared radiation coating 232 forms a porous infrared layer 41, as shown in FIG12(b).

[0112] Specifically, the heating element preform 70 is manufactured on the surface of the porous infrared layer 41 by any method of sputtering, evaporation, screen printing, coating, and inkjet printing.

[0113] S2: forming a first layer structure of the porous sheet layer embryo with the preform of the heating element on a mold.

[0114] Please refer to Figure 13. Figure 13(a) is Fig.11 The structural schematic diagram of the first embodiment corresponding to step S2 of the manufacturing method of the atomizer core provided, FIG. 13( b ) is Fig.11 A structural schematic diagram of the second embodiment corresponding to step S2 of the method for manufacturing an atomizer core is provided.

[0115] As shown in FIG. 13( a), in one embodiment, the mold 80 is specifically a first mold 81, and the first mold 81 is a ring-shaped cylindrical structure. The porous sheet green embryo 40 is wound on the first mold 81 to form a prefabricated inner tube 51, and the prefabricated inner tube 51 is the first layer structure 50. The porous sheet green embryo 40 is wound on the outer surface of the inner ring of the first mold 81, so that one side of the porous sheet green embryo 40 provided with the heating element preform 70 is close to the outer surface of the inner ring of the first mold 81, that is, the heating element preform 70 is arranged on the inner wall of the prefabricated inner tube 51. The inner ring can be a hollow structure or a solid structure.

[0116] As shown in Figure 13(b), in another embodiment, the mold 80 is specifically a second mold 82, and the second mold 82 is a rectangular frame structure. The porous sheet green embryo 40 is laid flat in the second mold 82 to form a first layer structure 50, so that one side of the porous sheet green embryo 40 provided with the heating element preform 70 is close to the inner bottom surface of the second mold 82.

[0117] S3: preparing a second layer structure on a side of the first layer structure away from the heat generating element preform.

[0118] Please refer to Figure 14. Figure 14(a) is Fig.11 The structural schematic diagram of the first embodiment corresponding to step S3 of the manufacturing method of the atomizer core provided, FIG. 14( b ) is Fig.11 A structural schematic diagram of the second embodiment corresponding to step S3 of the method for manufacturing an atomizer core is provided.

[0119] Specifically, the second layer structure 60 is formed by injection molding, gel injection molding, dry pressing, etc. on the side of the first layer structure 50 away from the preform 70 of the heating element. The raw materials used to form the second layer structure 60 are made into a second slurry; the second slurry is injected into the side of the first layer structure 50 away from the preform 70 of the heating element. The surface of the second layer structure 60 on one side close to the first layer structure 50 is in close contact with the surface of the first layer structure 50 on one side away from the preform 70 of the heating element.

[0120] In one embodiment, as shown in FIG14(a), in the first mold 81, the second slurry is poured between the porous sheet green embryo 40 and the outer ring to form the second layer structure 60. In another embodiment, as shown in FIG14(b), in the second mold 82, the second slurry is poured on the side of the porous sheet green embryo 40 away from the heating element preform 70 to form the second layer structure 60.

[0121] S4: removing the mold, and sintering the first layer structure, the second layer structure and the heating element preform as a whole.

[0122] Please refer to Figure 15. Figure 15(a) is Fig.11The structural schematic diagram of the first embodiment corresponding to step S4 of the manufacturing method of the atomizer core provided, FIG. 15( b ) is Fig.11 A structural schematic diagram of the second embodiment corresponding to step S4 of the method for manufacturing an atomizer core is provided.

[0123] Specifically, the second layer structure 60, the first layer structure 50 and the heat-generating element preform 70 placed in the first mold 81 or the second mold 82 are placed at normal pressure. In one embodiment, after the placement is completed, the first mold 81 or the second mold 82 is removed along the longitudinal direction of the second layer structure 60 and / or the first layer structure 50; the second layer structure 60, the first layer structure 50 and the heat-generating element preform 70 are subjected to debinding treatment at 350°C-800°C; the first layer structure 50, the second layer structure 60 and the heat-generating element preform 70 are subjected to normal pressure sintering at 850°C-1500°C in an air atmosphere. The heat-generating element preform 70 is sintered as a whole to form the heat-generating element 30. In one embodiment, as shown in FIG. 15( a), a hollow tubular atomizer core 12 is obtained after normal pressure sintering, and the prefabricated inner tube 51 is sintered to form a first layer structure 50; the prefabricated outer tube 61 is sintered to form a second layer structure 60. The atomizer core 12 includes a liquid guide 20 and a heating element 30. The liquid guide 20 has a first layer structure 50 of the inner layer of the hollow tubular body and a second layer structure 60 that is closely attached to the first layer structure 50, and the heating element 30 is arranged on the side of the first layer structure 50 away from the second layer structure 60. In another embodiment, as shown in FIG. 15( b), a plate-shaped atomizer core 12 is obtained after normal pressure sintering, and the atomizer core 12 includes a liquid guide 20 and a heating element 30. The liquid guide 20 has a first layer structure 50 and a second layer structure 60, and a heating element 30 is arranged on the side of the first layer structure 50 away from the second layer structure 60, and the first layer structure 50 is closely attached to the second layer structure 60.

[0124] In the first specific embodiment, the first layer structure 50 and the second layer structure 60 serve as the porous infrared layer 41 .

[0125] The raw materials for forming the porous sheet green body 40 are made into a first slurry. Specifically, the raw materials for forming the porous sheet green body 40 are prepared, and the prepared raw materials are evenly mixed to form the first slurry. The first slurry is ball-milled in a drum for 24 hours to obtain a stable casting slurry, and after vacuum degassing, the porous infrared layer 41 is cast and cut into a thin sheet. The raw materials for forming the first slurry include a first powder and a first solvent, the first powder includes infrared ceramic powder, a first sintering aid and a first pore-forming agent; the first sintering aid accounts for 1% to 40% of the mass of the first powder, and the mass percentage of the first pore-forming agent does not exceed twice the total mass of the infrared ceramic powder and the first sintering aid; the first solvent includes a first solvent, a dispersant, a first binder, a first plasticizer and a coupling agent, the first solvent accounts for 80% to 150% of the mass of the first powder; the first binder accounts for 5% to 20% of the mass of the first powder; the dispersant accounts for 0.1% to 5% of the mass of the first powder; the first plasticizer accounts for 40% to 70% of the mass of the first binder; the coupling agent accounts for 0% to 2% of the mass of the first powder. The mass ratio of the first sintering aid, the first pore-forming agent and the first binder can be determined according to the required sintering shrinkage rate of the first layer structure 50.

[0126] In a specific embodiment, the materials of the infrared ceramic powder include cordierite system, spinel system, perovskite system and magnetoplumbite system. According to the stability of the material emissivity changing with temperature, thermal expansion coefficient and thermal conductivity, a suitable material system powder of the infrared ceramic powder is selected. 2 Al 4 Si 5 O 18 As the main body, Li 2 O, ZnO, NiO, CoO, CuO, Fe 2 O 3 Cr 2 O 3 、TiO 2 、MnO 2 One or more transition metal oxides are mixed and fired; the spinel system is composed of MgO, MnO, NiO, ZnO, CuO, Al 2 O 3 Cr 2 O 3 , Fe 2 O 3 、MnO 2 、TiO 2The perovskite series is made of La, Sr, Pr, Eu and other trivalent rare metal oxides and Fe, Cr, Mn, Al, Ti, Cu, Ca and other transition metal oxides. The magnetoplumbite system is made of XAl 12 O 19 It is the main presenting form, and X is one or more of alkaline earth metals such as Mg, Mn, Fe, Ca, Sr (except Ba) or rare earth metal ions such as La, Ce, Pr, Nd, Er, Ho, etc.

[0127] In this embodiment, the first powder forming the porous infrared layer 41 is composed of La-Ca-Mn perovskite system infrared ceramic powder with a mass percentage of 55% of the mass of the first powder, glass powder with a mass percentage of 12% of the mass of the first powder, kaolin with a mass percentage of 5% of the mass of the first powder, and polystyrene balls with a mass percentage of 28% of the mass of the first powder. The first solvent forming the porous infrared layer 41 is composed of a first solubilizer with a mass percentage of 75.5% of the mass of the first solvent, a dispersant with a mass percentage of 1% of the mass of the first solvent, a first binder with a mass percentage of 15% of the mass of the first solvent, a first plasticizer with a mass percentage of 8% of the mass of the first solvent, and a coupling agent with a mass percentage of 0.5% of the mass of the first solvent, and the mass percentage of the first powder is 60% of the total mass of the first solvent and the first powder.

[0128] The first slurry is made into a porous sheet green body 40 through a tape casting process. Specifically, the first slurry prepared above is made into a porous sheet green body 40 through a tape casting process, that is, a porous sheet thin plate is formed. In an optional embodiment, the first slurry prepared above can also be formed into a porous sheet green body 40 by a film rolling method.

[0129] A heating element preform 70 is prepared on the porous sheet green embryo 40 by screen printing. Specifically, the heating element preform 70 is printed on one side surface of the porous sheet green embryo 40. In a specific embodiment, the material of the heating element preform 70 can be silver, silver palladium, silver platinum, or any one of gold and platinum materials. Due to the good heat resistance of the material of the heating element preform 70, it can be co-fired with the first layer structure 50 and the second layer structure 60 as a whole under the condition of 850 to 1500 degrees Celsius; wherein, the preparation of the heating element preform 70 can also be made by any one of sputtering, evaporation, screen printing, coating, and inkjet printing. The heating element preform 70 can also be prepared by other methods, as long as the heating element preform 70 that meets the requirements can be obtained. As shown in Figure 12 (a), the heating element preform 70 is arranged on the porous infrared layer 40, that is, the heating element preform 70 is arranged on the porous infrared substrate 231.

[0130] The porous sheet green embryo 40 is arranged on the first mold 81 or the second mold 82 to form the first layer structure 50. In one embodiment, the porous sheet green embryo 40 printed with the heating element preform 70 is wound on the first mold 81 to form the first layer structure 50. In one embodiment, as shown in FIG. 13 (a), the porous sheet green embryo 40 is formed around the inner ring of the first mold 81 to form a hollow tubular structure, that is, the first layer structure 50 is formed. Among them, one side of the porous sheet green embryo 40 on which the heating element preform 70 is printed is close to the surface of the inner ring close to the outer ring. In another embodiment, the porous sheet green embryo 40 is formed around the outer ring of the first mold 81 to form a hollow tubular structure, that is, the first layer structure 50 is formed. Among them, one side of the porous sheet green embryo 40 on which the heating element preform 70 is printed is close to the surface of the outer ring close to the inner ring. In another embodiment, as shown in FIG. 13( b ), the porous sheet green embryo 40 is laid flat in the second mold 82 to form a first layer structure 50 , so that one side of the porous sheet green embryo 40 provided with the heating element preform 70 is close to the inner bottom surface of the mold 80 .

[0131] The raw materials used to form the prefabricated outer tube 61 are made into a second slurry. Specifically, the raw materials for forming the second layer structure 50 are prepared, and the raw materials for forming the second structure 60 are mixed uniformly according to a preset ratio to form a second slurry. The raw materials for forming the second slurry include a second powder and an additive, and the second powder accounts for 55%-80% of the total mass of the second powder and the additive. The second powder includes infrared ceramic powder, a second sintering additive, and a second pore-forming agent; the second sintering additive accounts for 2% to 40% of the mass of the second powder, and the second pore-forming agent accounts for 5% to 80% of the mass of the second powder; the additive includes a skeleton forming agent, a second surfactant, a second plasticizer, and a second binder, and the skeleton forming agent accounts for 50% to 90% of the mass of the additive; the second surfactant accounts for 1% to 10% of the mass of the additive; the second plasticizer accounts for 1% to 20% of the mass of the additive; the second binder accounts for 10% to 40% of the mass of the second powder.

[0132] In this embodiment, the second powder forming the second layer structure 60 is composed of La-Ca-Mn perovskite system infrared ceramic powder with a mass percentage of 60% of the mass of the second powder, glass powder with a mass percentage of 12% of the mass of the second powder, kaolin with a mass percentage of 5% of the mass of the second powder, and polymethyl methacrylate balls with a mass percentage of 23% of the mass of the second powder. The auxiliary agent forming the second layer structure 60 is composed of a skeleton forming agent with a mass percentage of 65% of the mass of the auxiliary agent, a second surfactant with a mass percentage of 1% of the mass of the auxiliary agent, a second plasticizer with a mass percentage of 10% of the mass of the auxiliary agent, and a second binder with a mass percentage of 24% of the mass of the auxiliary agent. The mass percentage of the second powder is 70% of the total mass of the auxiliary agent and the second powder. The second powder and the auxiliary agent are mixed in a three-dimensional mixer for 2 hours, then kneaded at 180°C for 1.5 hours, and crushed after cooling to obtain a granular injection molding feed, i.e., the second slurry.

[0133] The second slurry is injected into the side of the first layer structure 60 away from the heating element preform 70 to form the second layer structure 60. Specifically, the second slurry is injected into the side of the first layer structure 50 away from the heating element preform 70, and the inner wall of the second layer structure 60 is in close contact with the outer wall of the first layer structure 50. In a specific embodiment, as shown in FIG14(a), in the first mold 81, the second slurry is poured between the porous sheet green embryo 40 and the outer ring to form the second layer structure 60. In another specific embodiment, the second slurry is poured between the porous sheet green embryo 40 and the inner ring to form the second layer structure 60. In another specific embodiment, as shown in FIG14(b), in the second mold 82, the second slurry is poured on the side of the porous sheet green embryo 40 away from the heating element preform 70 to form the second layer structure 60.

[0134] The mold is removed, and the first layer structure 50, the second layer structure 60 and the preform 70 of the heating element are sintered as a whole. Specifically, the second layer structure 60, the first layer structure 50 and the preform 70 of the heating element placed in the mold 80 are allowed to stand at normal pressure as a whole; the mold 80 is removed along the longitudinal axis direction of the second layer structure 60 and / or the first layer structure 50; the second layer structure 60, the first layer structure 50 and the preform 70 of the heating element are subjected to a debinding treatment at 350-800°C; in an air atmosphere, the first layer structure 50, the second layer structure 60 and the preform 70 of the heating element are sintered at normal pressure at 850-1500°C as a whole. In a specific embodiment, after the operation of forming the prefabricated outer layer tube 61 with the second slurry is completed, the entire prefabricated structure is allowed to stand at normal pressure for 15 minutes, and then the mold is removed, and the first layer structure 50, the second layer structure 60 and the preform 70 of the heating element are retained as a whole. First, the second layer structure 60, the first layer structure 50 and the heating element preform 70 are subjected to a debinding treatment at 500°C for 48 hours; then, the first layer structure 50, the second layer structure 60 and the heating element preform 70 are subjected to normal pressure sintering in air at a sintering temperature of 1000°C. After sintering, the two electrodes 25 of the heating element preform 70 are led out from the end of the atomizing chamber 14 away from the air outlet channel 13, so that the heating element preform 70 can be connected to the power supply assembly 2 through the electrodes 25.

[0135] In the second specific embodiment, the first layer structure 50 serves as the porous infrared layer 41 , and the second layer structure 60 does not serve as the porous infrared layer 41 . The heating element preform 70 is disposed on the porous infrared layer 41 , that is, the heating element preform 70 is disposed on the porous infrared substrate 231 .

[0136] The specific steps of preparing the atomizer core 12 in the second specific embodiment are similar to those in the first specific embodiment, but the raw materials for forming the second slurry in the second specific embodiment are different from those in the first specific embodiment.

[0137] In this embodiment, the raw materials for forming the second slurry include a fourth powder and an additive. The fourth powder accounts for 55%-80% of the total mass of the fourth powder and the additive. The fourth powder includes ordinary ceramic powder, a second sintering aid and a second pore-forming agent; the second sintering aid accounts for 2% to 40% of the mass of the fourth powder, and the second pore-forming agent accounts for 5% to 80% of the mass of the fourth powder; the additive includes a skeleton forming agent, a second surfactant, a second plasticizer and a second binder, and the skeleton forming agent accounts for 50% to 90% of the mass of the additive; the second surfactant accounts for 1% to 10% of the mass of the additive; the second plasticizer accounts for 1% to 20% of the mass of the additive; the second binder accounts for 10% to 40% of the mass of the fourth powder. After mixing the fourth powder and the additive in a three-dimensional mixer for 3 hours, they are kneaded at 150°C for 2 hours, and crushed after cooling to obtain a granular injection molding feed, i.e., the second slurry.

[0138] In the third specific embodiment, the first layer structure 50 only partially serves as the porous infrared layer 41 , and the second layer structure 60 does not serve as the porous infrared layer 41 . The heating element preform 70 is disposed on the porous infrared layer 41 , that is, the heating element preform 70 is disposed on the infrared radiation coating 232 .

[0139] The specific steps of preparing the atomizer core 12 in the third specific embodiment are similar to the specific steps of preparing the atomizer core 12 in the first specific embodiment, but the process and materials for forming the porous sheet green body 40 and the raw materials for forming the second slurry in the third specific embodiment are different from the process and materials for forming the porous sheet green body 40 and the raw materials for forming the second slurry in the first specific embodiment.

[0140] In this embodiment, the raw materials for forming the porous non-infrared layer 42 are made into a first slurry. Specifically, the raw materials for forming the porous non-infrared layer 42 are prepared, and the prepared raw materials are evenly mixed to form the first slurry. The first slurry is ball-milled in a drum for 12 hours to obtain a stable casting slurry, which is then vacuum degassed and cast and cut into a thin sheet-like porous non-infrared layer. Among them, the raw materials for forming the first slurry include a fifth powder and a first solvent, the fifth powder includes ordinary ceramic powder, a first sintering aid and a first pore-forming agent; the first sintering aid accounts for 1% to 40% of the mass of the fifth powder, and the mass percentage of the first pore-forming agent does not exceed twice the total mass of the ordinary ceramic powder and the first sintering aid; the first solvent includes a first solvent, a dispersant, a first binder, a first plasticizer and a coupling agent, and the first solvent accounts for 80% to 150% of the mass of the fifth powder; the first binder accounts for 5% to 20% of the mass of the fifth powder; the dispersant accounts for 0.1% to 5% of the mass of the fifth powder; the first plasticizer accounts for 40% to 70% of the mass of the first binder; the coupling agent accounts for 0% to 2% of the mass of the fifth powder.

[0141] In a specific embodiment, the common ceramic powder includes one or more of silicon dioxide, quartz powder, floating beads, diatomaceous earth, alumina, silicon carbide, magnesium oxide, kaolin, mullite, cordierite, zeolite or hydroxyapatite; the first sintering aid and the second sintering aid both include one or more of anhydrous sodium carbonate, anhydrous potassium carbonate, sodium feldspar, potassium feldspar, clay, kaolin, bentonite or glass powder; the first sintering aid and the second sintering aid both include one or more of sawdust, graphite powder, starch, flour, walnut powder, polystyrene balls or polymethyl methacrylate balls.

[0142] Then, an infrared radiation coating 232 is coated on the surface of the porous non-infrared layer 42, and a drying treatment is performed to obtain a porous sheet embryo 40. Among them, the infrared radiation coating 232 serves as a porous infrared layer 41. In this embodiment, the raw materials for forming the infrared radiation coating 232 include a third powder and a third solvent, and the third powder includes an infrared ceramic powder, a bonding phase and a third pore-forming agent; the bonding phase accounts for 1% to 40% of the mass of the third powder, and the mass percentage of the third pore-forming agent does not exceed one times the total mass of the infrared ceramic powder and the bonding phase; the third solvent includes a third solubilizer, a third thickener, a third surfactant, a thixotropic agent and a casting control agent; the third solubilizer accounts for 55% to 99% of the mass of the third solvent; the third thickener accounts for 1% to 20% of the mass of the third solvent; the third surfactant accounts for 1% to 10% of the mass of the third solvent; the thixotropic agent accounts for 0.1% to 5% of the mass of the third solvent; and the casting control agent accounts for 0.1% to 10% of the mass of the third solvent.

[0143] In a specific embodiment, the third solvent constituting the infrared radiation coating 232 includes one or more of pinene alcohol, butyl carbitol acetate, butyl cellosolve, tributyl citrate, ethylene glycol ethyl ether acetate, isopropyl alcohol or dibutyl phthalate; the third thickener includes cellulose and acrylic acid, specifically including one or more of ethyl cellulose, nitrocellulose, polyisobutylene, polyisobutylene polyethylene ethanol, polymethyl styrene or polymethyl methacrylate; the thixotropic agent includes one or more of castor oil, hydrogenated castor oil or organic bentonite; the third surfactant often uses one or more of anhydrous ethanol, soybean lecithin or Span 85; the casting control agent includes one or more of terephthalic acid, ammonium sulfate or furoic acid.

[0144] In this embodiment, the raw materials for forming the second slurry are the same as the raw materials for forming the second slurry in the second specific embodiment, and will not be described again.

[0145] In the manufacturing method of the atomizer core 12 provided in the present embodiment, a porous sheet green embryo 40 is prepared; a heating element preform 70 is prepared on the porous sheet green embryo 40; wherein the porous sheet green embryo 40 includes a porous infrared layer 41. The porous sheet green embryo 40 having the heating element preform 70 forms a first layer structure 50 on a mold 80; a second layer structure 60 is prepared on the side of the first layer structure 50 away from the heating element preform 70; the mold 80 is removed, and the first layer structure 50, the second layer structure 60 and the heating element preform 70 are sintered as a whole. After the heating element preform 70 is sintered, the heating element 30 is formed. After the first layer structure 50 and the second layer structure 60 are sintered as a whole, the liquid guide 20 is formed. The infrared radiation portion 23 formed by the porous infrared layer 41 can absorb the heat released by the heating element 30 to radiate infrared rays to preheat the substrate to be atomized in the liquid guide 20. The present application sets an infrared radiation part 23 on the liquid guiding part 20, and the atomizing surface 21 is on the surface of the infrared radiation part 23, so that the infrared radiation part 23 can absorb the heat released by the heating element 30, and then radiate infrared rays to the outer wall or outer surface of the liquid guiding part 20 to preheat the substrate to be atomized around the heating element 30. This can not only improve the thermal energy utilization rate of the heating element 30, but also accelerate the transmission rate of the substrate to be atomized, and increase the liquid supply amount of the substrate to be atomized transmitted to the atomizing surface 21, thereby effectively avoiding the dry burning phenomenon of the atomizing core 12; it can also increase the content of the aerosol formed after the substrate to be atomized is atomized, thereby improving the user experience.

[0146] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and embodiments are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims.

[0147] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An atomizer core, characterized in that: The atomizer core comprises: A liquid guide, comprising an atomizing surface and a liquid absorbing surface, and the matrix to be atomized is transferred from the liquid absorbing surface to the atomizing surface; A heating element, disposed on the atomizing surface, for heating and atomizing the substrate to be atomized; Wherein, the liquid guide member comprises an infrared radiation portion, the infrared radiation portion has the atomizing surface, and the infrared radiation portion is used to absorb the heat released by the heating element to radiate infrared rays to preheat the substrate to be atomized in the liquid guide member; The liquid-guiding component also includes a porous non-infrared matrix, which is fixedly connected to the infrared radiation part. The surface of the porous non-infrared matrix away from the infrared radiation part serves as the liquid absorption surface, and the surface of the infrared radiation part away from the porous non-infrared matrix serves as the atomization surface.

2. The atomizer core according to claim 1, characterized in that: The infrared radiation part is a porous infrared matrix or an infrared radiation coating.

3. The atomizer core according to claim 1, characterized in that: The thickness of the infrared radiation portion is 0.01 mm to 0.5 mm, and the thickness of the porous non-infrared substrate is 0.2 mm to 3.0 mm.

4. The atomizer core according to claim 1, characterized in that: The infrared radiation part is made of porous infrared ceramics, the porous non-infrared matrix is ​​made of porous non-infrared ceramics, the pore sizes of the porous infrared ceramics and the porous non-infrared ceramics are 10 microns to 100 microns, and the porosity is 40% to 70%.

5. The atomizer core according to claim 1, characterized in that: The liquid guiding member is a hollow tubular body, one of the inner side surface and the outer side surface of the hollow tubular body serves as the atomization surface, and the other serves as the liquid absorption surface; or the liquid guiding member is a plate body, one of the two opposite surfaces of the plate body serves as the atomization surface, and the other serves as the liquid absorption surface.

6. The atomizer core according to claim 1, characterized in that: The radiation temperature of the infrared radiation part is 45°C to 95°C.

7. The atomizer core according to claim 2, characterized in that: The infrared radiation portion is the porous infrared matrix, and the materials forming the porous infrared matrix include a first powder and a first solvent, the first powder includes infrared ceramic powder, a first sintering aid and a first pore-forming agent; the first sintering aid accounts for 1% to 40% of the mass of the first powder, and the mass percentage of the first pore-forming agent does not exceed twice the total mass of the infrared ceramic powder and the first sintering aid; the first solvent includes a first solvent, a dispersant, a first binder, a first plasticizer and a coupling agent, the first solvent accounts for 80% to 150% of the mass of the first powder; the first binder accounts for 5% to 20% of the mass of the first powder; the dispersant accounts for 0.1% to 5% of the mass of the first powder; the first plasticizer accounts for 40% to 70% of the mass of the first binder; the coupling agent accounts for 0% to 2% of the mass of the first powder.

8. The atomizer core according to claim 7, characterized in that: The material forming the porous infrared matrix also includes a second powder and an additive, the second powder accounts for 55%-80% of the total mass of the second powder and the additive, the second powder includes infrared ceramic powder, a second sintering aid and a second pore-forming agent; the second sintering aid accounts for 2%~40% of the mass of the second powder, and the second pore-forming agent accounts for 5%~80% of the mass of the second powder; the additives include a skeleton forming agent, a second surfactant, a second plasticizer and a second binder, the skeleton forming agent accounts for 50%~90% of the mass of the additive; the second surfactant accounts for 1%~10% of the mass of the additive; the second plasticizer accounts for 1%~20% of the mass of the additive; the second binder accounts for 10%~40% of the mass of the second powder.

9. The atomizer core according to claim 2, characterized in that: The infrared radiation portion is the infrared radiation coating, and the material forming the infrared radiation coating includes a third powder and a third solvent, the third powder includes infrared ceramic powder, a bonding phase and a third pore-forming agent; the bonding phase accounts for 1% to 40% of the mass of the third powder, and the mass percentage of the third pore-forming agent does not exceed one times the total mass of the infrared ceramic powder and the bonding phase; the third solvent includes a third solubilizer, a third thickener, a third surfactant, a thixotropic agent and a casting control agent; the third solubilizer accounts for 55% to 99% of the mass of the third solvent; the third thickener accounts for 1% to 20% of the mass of the third solvent; the third surfactant accounts for 1% to 10% of the mass of the third solvent; the thixotropic agent accounts for 0.1% to 5% of the mass of the third solvent; the casting control agent accounts for 0.1% to 10% of the mass of the third solvent.

10. An atomizer, characterized in that: The atomizer comprises the atomizer core according to any one of claims 1 to 9.

11. An electronic atomization device, characterized in that: The electronic atomization device comprises a power supply assembly and the atomizer described in claim 10, and the power supply assembly supplies power to the atomizer.

12. A method for manufacturing the atomizer core according to claims 1 to 9, characterized in that: The manufacturing method of the atomizer core comprises: preparing a porous sheet green embryo, wherein the porous sheet green embryo comprises a porous infrared layer; Producing a heat-generating element preform on the porous infrared layer; Forming a first layer structure on a mold by forming the porous sheet green body having the heat generating element preform; Prepare a second layer structure on a side of the first layer structure away from the heat generating element preform; The mold is removed, and the first layer structure, the second layer structure and the heat generating element preform are sintered as a whole.

13. The method for manufacturing an atomizer core according to claim 12, characterized in that: The step of preparing the porous sheet embryo comprises: Prepare a first slurry from raw materials for forming the porous infrared layer; The first slurry is made into the porous infrared layer through a casting process.

14. The method for manufacturing an atomizer core according to claim 12, characterized in that: The step of preparing the porous sheet embryo comprises: Prepare a first slurry from a raw material for forming a porous non-infrared layer; Forming the porous non-infrared layer from the first slurry through a casting process; The porous infrared layer is formed by coating an infrared radiation coating on one surface of the porous non-infrared layer.

15. The method for manufacturing an atomizer core according to claim 12, characterized in that: The step of preparing a preform of a heating element on the porous infrared layer comprises: The heating element preform is manufactured by any one of sputtering, evaporation, silk screen printing, coating and inkjet printing.

16. The method for manufacturing an atomizer core according to claim 12, characterized in that: The step of forming the first layer structure of the porous sheet green body on the mold comprises: The porous sheet green body is wound on the mold to form a prefabricated inner tube, and the prefabricated heating element is arranged on the inner wall of the prefabricated inner tube; The step of preparing the second layer structure on the side of the first layer structure away from the heat generating element preform comprises: A prefabricated outer layer tube is formed outside the predicted inner layer tube.

17. The method for manufacturing an atomizer core according to claim 12, characterized in that: The step of forming the first layer structure of the porous sheet green body on the mold comprises: Laying the porous sheet green body flat in the mold to form the first layer structure, and the heating element preform is arranged on the surface of the first layer structure facing the bottom surface of the mold; The step of preparing the second layer structure on the side of the first layer structure away from the heat generating element preform comprises: The second layer structure is formed on a side of the first layer structure away from the heat generating element preform.

18. The method for manufacturing an atomizer core according to claim 12, characterized in that: The step of preparing the second layer structure on the side of the first layer structure away from the heat generating element preform comprises: preparing a second slurry from a raw material for forming the second layer structure; The second slurry is injected into a side of the first layer structure away from the heat generating element preform, and an inner wall surface of the second layer structure is in close contact with a surface of the first layer structure away from the heat generating element preform.

19. The method for manufacturing an atomizer core according to claim 12, characterized in that: The step of removing the mold and sintering the first layer structure, the second layer structure and the heat generating element preform as a whole comprises: The second layer structure, the first layer structure and the heat generating element preform placed in the mold are allowed to stand still as a whole under normal pressure; Removing the mold along the longitudinal direction of the second layer structure and / or the first layer structure; Performing a debinding treatment on the second layer structure, the first layer structure and the heat generating element preform as a whole at 350° C.-800° C.; In an air atmosphere, the first layer structure, the second layer structure and the heat generating element preform are sintered as a whole at 850° C. to 1500° C. under normal pressure.

20. The method for manufacturing an atomizer core according to claim 13, characterized in that: The raw materials for forming the first slurry include a first powder and a first solvent, the first powder includes an infrared ceramic powder, a first sintering aid and a first pore-forming agent; the first sintering aid accounts for 1% to 40% of the mass of the first powder, and the mass percentage of the first pore-forming agent does not exceed twice the total mass of the infrared ceramic powder and the first sintering aid; the first solvent includes a first solvent, a dispersant, a first binder, a first plasticizer and a coupling agent, the first solvent accounts for 80% to 150% of the mass of the first powder; the first binder accounts for 5% to 20% of the mass of the first powder; the dispersant accounts for 0.1% to 5% of the mass of the first powder; the first plasticizer accounts for 40% to 70% of the mass of the first binder; the coupling agent accounts for 0% to 2% of the mass of the first powder.

21. The method for manufacturing an atomizer core according to claim 14, characterized in that: The raw materials for forming the infrared radiation coating include a third powder and a third solvent, the third powder includes infrared ceramic powder, a bonding phase and a third pore-forming agent; the bonding phase accounts for 1% to 40% of the mass of the third powder, and the mass percentage of the third pore-forming agent does not exceed one times the total mass of the infrared ceramic powder and the bonding phase; the third solvent includes a third solubilizer, a third thickener, a third surfactant, a thixotropic agent and a casting control agent; the third solubilizer accounts for 55% to 99% of the mass of the third solvent; the third thickener accounts for 1% to 20% of the mass of the third solvent; the third surfactant accounts for 1% to 10% of the mass of the third solvent; the thixotropic agent accounts for 0.1% to 5% of the mass of the third solvent; the casting control agent accounts for 0.1% to 10% of the mass of the third solvent.

22. According to the manufacturing method of the atomizer core according to claim 19, the raw materials for forming the second slurry include a second powder and an additive, the second powder accounts for 55%-80% of the total mass of the second powder and the additive, and the second powder includes infrared ceramic powder, a second sintering aid and a second pore-forming agent; the second sintering aid accounts for 2%~40% of the mass of the second powder, and the second pore-forming agent accounts for 5%~80% of the mass of the second powder; the additive includes a skeleton forming agent, a second surfactant, a second plasticizer and a second binder, the skeleton forming agent accounts for 50%~90% of the mass of the additive; the second surfactant accounts for 1%~10% of the mass of the additive; the second plasticizer accounts for 1%~20% of the mass of the additive; the second binder accounts for 10%~40% of the mass of the second powder.

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