WO2023165208A1

WO2023165208A1 - Electronic atomization device, atomizer, atomization core, and manufacturing method for atomization core thereof

Info

Publication number: WO2023165208A1
Application number: PCT/CN2022/138149
Authority: WO
Inventors: 刘望生; 杜贤武; 夏慕楠; 龙继才; 周宏明; 李日红
Original assignee: 海南摩尔兄弟科技有限公司
Priority date: 2022-03-04
Filing date: 2022-12-09
Publication date: 2023-09-07
Also published as: CN114831352A

Abstract

Provided in the present application are an electronic atomization device, an atomizer, an atomization core and a manufacturing method for the atomization core thereof. The atomization core comprises a liquid transfer member and a heating member, the liquid transfer member is provided with an atomization surface and a liquid absorption surface, and a substrate to be atomized is transferred to the atomization surface from the liquid absorption surface. The heating member is arranged on the atomization surface and used for heating and atomizing the substrate to be atomized. The liquid transfer member comprises an infrared radiation part, the infrared radiation part is provided with an atomization surface and is used for absorbing heat released by the heating member, so as to radiate infrared rays to preheat the substrate to be atomized in the liquid transfer member. In the present application, the infrared radiation part is arranged on the liquid transfer member, and the atomization surface is located on the surface of the infrared radiation part, so that the infrared radiation part can absorb heat released by the heating member, and radiate infrared rays to the outer wall or the outer surface of the liquid transfer member so as to preheat the substrate to be atomized around the heating member. The heat energy utilization rate of the heating member can be increased, the transferring rate of the substrate to be atomized can be increased, dry-burning of the heating member can be prevented, and the use taste of the user can be improved.

Description

Electronic atomization device, atomizer, atomization core and manufacturing method of atomization core

Cross References to Related Applications

This application claims the priority of Chinese patent application 202210210865.5 filed on March 4, 2022, the entire contents of which are incorporated herein by reference.

technical field

The present application relates to the technical field of atomization devices, in particular to an electronic atomization device, an atomizer, an atomization core and a method for manufacturing the atomization core.

Background technique

There are dozens of carcinogenic substances in the aerosol generated by the combustion of the atomized substrate, such as tar, which will cause great harm to human health. Moreover, the aerosol diffuses in the air and forms harmful substances, which will also be inhaled by the surrounding people. bodily harm. Therefore, in order to meet the needs of some users, electronic atomization devices came into being.

The atomization core of the existing electronic atomization device has a low atomization efficiency for the high-viscosity atomization matrix. The problem of high temperature of the heating element will bring users a poor taste experience, and even dry burning will cause miscellaneous gas and burnt smell.

Contents of the invention

The technical problem mainly solved by this 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 problem of low atomization efficiency and poor user taste of high-viscosity atomization substrates in the prior art. The problem.

In order to solve the above-mentioned technical problems, the first technical solution adopted by this application is to provide an atomizing core, the atomizing core includes: a liquid guide, with an atomizing surface and a liquid-absorbing surface, and the substrate to be atomized is drawn from the liquid-absorbing surface It is transmitted to the atomization surface; the heating element is arranged on the atomization surface, and is used for heating and atomizing the substrate to be atomized; wherein, the liquid guide includes an infrared radiation part, and the infrared radiation part has an atomization surface, and the infrared radiation part is used for Absorb the heat released by the heating element to radiate infrared rays to preheat the substrate to be atomized in the liquid guiding element.

Wherein, 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.

Wherein, the liquid guide also includes a porous non-infrared matrix, the porous non-infrared matrix is fixedly connected with the infrared radiation part, the surface of the porous non-infrared matrix away from the infrared radiation part is used as a liquid absorption surface, and the surface of the infrared radiation part away from the porous non-infrared matrix is used as a mist 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 radiating part is porous infrared ceramics, the material of the porous non-infrared substrate is porous non-infrared ceramics, and the pore diameters of the porous infrared ceramics and the porous non-infrared ceramics are 10 microns to 100 microns, and the porosity is 40% to 70%.

Wherein, the liquid guiding part is a hollow tubular body, one of the inner and outer sides of the hollow tubular body is used as an atomizing surface, and the other is used as a liquid absorbing surface; or the liquid guiding part is a plate body, and the opposite surface of the plate body One surface acts as the atomizing face and the other as the absorbing face.

Wherein, the radiation temperature of the infrared radiation part is 45°C to 95°C.

Wherein, the infrared radiation part is a porous infrared matrix, and the material forming the porous infrared matrix includes a first powder and a first solvent, and the first powder includes an infrared ceramic powder, a first sintering aid, and a first pore-forming agent; the first sintering The percentage of the auxiliary agent in the mass of the first powder is 1% to 40%, and the mass percentage of the first pore-forming agent is no more than twice the total mass of the infrared ceramic powder and the first sintering aid; the first solvent includes the first dissolving agent , dispersant, first binder, first plasticizer and coupling agent, the first dissolving agent accounts for 80% to 150% of the first powder mass; the first binder accounts for the first powder mass The percentage of the first powder is 5% to 20%; the percentage of the dispersant to the mass of the first powder is 0.1% to 5%; the percentage of the first plasticizer to the mass of the first binder is 40% to 70%; the coupling agent The percentage of the mass of the first powder is 0%-2%.

Wherein, the material forming the porous infrared matrix also includes a second powder and an auxiliary agent, the second powder accounts for 55%-80% of the total mass of the second powder and the auxiliary agent, and the second powder includes infrared ceramic powder, The second sintering aid and the second pore-forming agent; the percentage of the second sintering aid in the mass of the second powder is 2%-40%, and the percentage of the second pore-forming agent in the mass of the second powder is 5%-80% %; auxiliary agents include skeleton forming agent, the second surfactant, the second plasticizer and the second binder, and the percentage of skeleton forming agent accounting for the mass of auxiliary agent is 50% to 90%; the second surfactant accounts for auxiliary The percentage of the weight of the additive is 1%-10%; the percentage of the second plasticizer in the weight of the auxiliary agent is 1%-20%; the percentage of the second binder in the weight of the second powder is 10%-40%.

Wherein, the infrared radiation part is an infrared radiation coating, and the material forming the infrared radiation coating includes a third powder and a third solvent, and the third powder includes an infrared ceramic powder, a binder phase and a third pore-forming agent; the binder phase The percentage of the mass of the third powder is 1% to 40%, and the mass percentage of the third pore-forming agent is not more than one time of the total mass of the infrared ceramic powder and the bonding phase; the third solvent includes the third dissolving agent, the third increasing Thickener, third surfactant, thixotropic agent and casting control agent; the third dissolving agent accounts for 55%-99% of the third solvent mass; the third thickener accounts for 1% of the third solvent mass %～20%; the percentage of the third surfactant in the mass of the third solvent is 1%～10%; the percentage of the thixotropic agent in the mass of the third solvent is 0.1%～5%; the casting control agent accounts for the mass of the third solvent The percentage is 0.1% to 10%.

In order to solve the above-mentioned technical problems, the second technical solution adopted by the present application is to provide an atomizer, which includes the above-mentioned atomizing core.

In order to solve the above technical problems, the third technical solution adopted by the present application is to provide an electronic atomization device, the electronic atomization device includes a power supply assembly and the aforementioned atomizer, and the power supply assembly supplies power to the atomizer.

In order to solve the above technical problems, the fourth technical solution adopted by this application is to provide a manufacturing method of the atomizing core, the manufacturing method of the atomizing core includes:

preparing a porous sheet green embryo, wherein the porous sheet green embryo includes a porous infrared layer;

A prefabricated body of a heating element is made on the porous infrared layer;

forming the first layer structure on the mould, with the porous sheet green embryo having the prefabricated body of the heating element;

preparing a second layer structure on the side of the first layer structure away from the prefabricated body of the heating element;

The mold is removed, and the first-layer structure, the second-layer structure and the prefabricated body of the heating element are sintered as a whole.

Wherein, the step of preparing the porous sheet green embryo comprises:

Making the raw materials for forming the porous infrared layer into a first slurry;

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

Wherein, the step of preparing the porous sheet green embryo comprises:

Making the raw material for forming the porous non-infrared layer into a first slurry;

Making the first slurry into a porous non-infrared layer through a casting process;

An infrared radiation coating is applied to one surface of the porous non-infrared layer to form the porous infrared layer.

Wherein, the step of making the prefabricated body of the heating element on the porous infrared layer includes:

The prefabricated body of the heating element is made by any method of sputtering, vapor deposition, silk screen printing, coating, and inkjet printing.

Wherein, the step of forming the first layer structure on the mold with the porous sheet green embryo includes:

Winding the porous sheet green body on the mold to form a prefabricated inner tube, and the prefabricated body of the 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 prefabricated body of the heating element includes:

A prefabricated outer tube is formed outside the predicted inner tube.

laying the porous sheet green body in the mold to form a first layer structure, and the prefabricated body of the heating element is arranged on the surface of the first layer structure facing the bottom surface of the mold;

A second layer structure is formed on a side of the first layer structure away from the prefabricated body of the heating element.

Wherein, the step of preparing the second layer structure on the side of the first layer structure away from the prefabricated body of the heating element includes:

making the raw materials used to form the second layer structure into a second slurry;

The second slurry is injected on the side of the first layer structure away from the preformed body 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 preformed body of the heating element.

Wherein, the steps of removing the mold and sintering the first layer structure, the second layer structure and the prefabricated body of the heating element as a whole include:

Putting the second layer structure, the first layer structure and the prefabricated body of the heating element placed in the mold under normal pressure as a whole;

withdrawing the mold along the longitudinal axis of the second layer structure and/or the first layer structure;

The second-layer structure, the first-layer structure and the prefabricated body of the heating element are degummed under the condition of 350°C-800°C;

In the air atmosphere, the whole of the first layer structure, the second layer structure and the prefabricated body of the heating element are sintered under the condition of 850° C. to 1500° C. under normal pressure.

The raw materials for forming the first slurry include the first powder and the first solvent, the first powder includes infrared ceramic powder, the first sintering aid and the first pore-forming agent; the first sintering aid accounts for 1% of the mass of the first powder The percentage is 1% to 40%, and the mass percentage of the first pore-forming agent is no more than twice the total mass of the infrared ceramic powder and the first sintering aid; the first solvent includes the first dissolving agent, the dispersing agent, and the first binder , the first plasticizer and the coupling agent, the percentage of the first dissolving agent in the mass of the first powder is 80% to 150%; the percentage of the first binder in the mass of the first powder is 5% to 20%; The percentage of the dispersant in the mass of the first powder is 0.1% to 5%; the percentage of the first plasticizer in the mass of the first binder is 40% to 70%; the percentage of the coupling agent in the mass of the first powder is 0% to 2%.

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 percentage of the bonding phase accounting for the mass of the third powder is 1% ~40%, the mass percentage of the third pore-forming agent is not more than one time of the total mass of the infrared ceramic powder and the bonding phase; the third solvent includes the third dissolving agent, the third thickening agent, the third surfactant, thixotropic agent and casting control agent; the third dissolving agent accounts for 55% to 99% of the third solvent; the third thickener accounts for 1% to 20% of the third solvent; the third surfactant accounts for The mass percentage of the third solvent is 1%-10%; the thixotropic agent accounts for 0.1%-5%; the casting control agent accounts for 0.1%-10%.

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

The beneficial effects of the present application are: different from the situation in the prior art, an electronic atomization device, an atomizer, an atomization core and a method for manufacturing the atomization core thereof are provided, the atomization core includes a liquid guide and a heating element, 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 element is arranged on the atomizing surface, and is used for heating and atomizing the substrate to be atomized; The component includes an infrared radiating part, which has an atomizing surface, and the infrared radiating part is used for absorbing the heat released by the heating component, so as to radiate infrared rays to preheat the substrate to be atomized in the liquid guiding component. In this application, an infrared radiation part is arranged on the liquid guide part, 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 part, and then radiate infrared rays to the outer wall or surface of the liquid guide part for preheating The substrate to be atomized around the heating element can not only improve the heat utilization rate of the heating element, but also accelerate the transmission rate of the substrate to be atomized, increase the liquid supply volume of the substrate to be atomized to the atomization surface, and effectively avoid atomization The core appears dry burning; it can also increase the content of aerosol formed after the atomization substrate is atomized, and improve the user experience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a schematic structural diagram of an embodiment of an electronic atomization device provided by the present application;

Fig. 2 is a schematic structural diagram of an embodiment of the atomizer in the electronic atomization device provided by the present application;

Fig. 3 is a schematic structural diagram of an embodiment of an atomizing core provided by the present application;

Fig. 4 is a schematic structural diagram of another embodiment of the atomizing core provided by the present application;

Fig. 5 is a schematic view of the longitudinal section structure of the first embodiment of the atomizing core provided in Fig. 3;

Fig. 6 is a schematic structural view of the first embodiment of the atomizing core provided in Fig. 4;

Fig. 7 is a schematic view of the longitudinal section structure of the second embodiment of the atomizing core provided in Fig. 3;

Fig. 8 is a schematic structural view of the second embodiment of the atomizing core provided in Fig. 4;

Fig. 9 is a schematic view of the longitudinal section structure of the third embodiment of the atomizing core provided in Fig. 3;

Fig. 10 is a schematic structural view of the third embodiment of the atomizing core provided in Fig. 4;

Fig. 11 is a schematic flow chart of an embodiment of the manufacturing method of the atomizing core provided by the present application;

Fig. 12(a) is a schematic structural diagram of the first embodiment corresponding to step S1 of the manufacturing method of the atomizing core provided in Fig. 11;

Fig. 12(b) is a schematic structural diagram of the second embodiment corresponding to step S1 of the manufacturing method of the atomizing core provided in Fig. 11;

Fig. 13(a) is a schematic structural diagram of the first embodiment corresponding to step S2 of the manufacturing method of the atomizing core provided in Fig. 11;

Fig. 13(b) is a schematic structural diagram of the second embodiment corresponding to step S2 of the manufacturing method of the atomizing core provided in Fig. 11;

Fig. 14(a) is a schematic structural diagram of the first embodiment corresponding to step S3 of the manufacturing method of the atomizing core provided in Fig. 11;

Fig. 14(b) is a schematic structural diagram of the second embodiment corresponding to step S3 of the manufacturing method of the atomizing core provided in Fig. 11;

Fig. 15(a) is a schematic structural diagram of the first embodiment corresponding to step S4 of the manufacturing method of the atomizing core provided in Fig. 11;

Fig. 15(b) is a schematic structural diagram of a second embodiment corresponding to step S4 of the manufacturing method of the atomizing core provided in Fig. 11 .

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The terms "first", "second", and "third" in this application are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include at least one of these features. All directional indications (such as inside, outside, up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings) If the specific posture changes, the directional indication will also change accordingly. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of an embodiment of an electronic atomization device provided by the present application.

As shown in FIG. 1 , an electronic atomization device 100 can be used for atomizing liquid substrates. The electronic atomization device 100 includes an atomizer 1 and a power supply assembly 2 connected to each other. 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 liquid substrates such as medicinal liquid and plant grass liquid; atomizer 1 It can be used in different fields, such as medical treatment, beauty treatment, electronic aerosolization and other fields. The power supply assembly 2 includes a battery (not shown in the figure), an airflow sensor (not shown in the figure), and a controller (not shown in the figure), etc.; the battery is used to supply power to the atomizer 1, so that the atomizer 1 can atomize and be atomized The substrate forms 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 welded connection, integrated, etc.; can also be detachable connection, such as snap connection, screw connection, magnetic suction connection, etc., and design according to specific needs. Of course, the electronic atomization device 100 also includes other components in the existing electronic atomization device 100, such as microphones, brackets, etc. The specific structures and functions of these components are the same or similar to those of the prior art. For details, please refer to the existing technology, and will not repeat them one by one here.

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of an embodiment of an atomizer in an electronic atomization device provided by the present application.

As shown in FIG. 2 , the atomizer 1 includes a suction nozzle 10 , a casing 11 and an atomizing core 12 . The suction nozzle 10 is connected to the housing 11 . The user inhales the aerosol from the mouthpiece 10 . The housing 11 has a liquid storage cavity 111 and an air outlet channel 13 . The liquid storage chamber 111 is used for storing the substance to be atomized. The liquid storage chamber 111 has a liquid outlet (not shown), and the substance to be atomized in the liquid storage chamber 111 flows from the liquid outlet to the atomizing core 12 for heating and atomizing by the atomizing core 12 . The atomizing core 12 is disposed at the liquid outlet of the liquid storage cavity 111 . The atomizing core 12 is used for atomizing the substance to be atomized stored in the liquid storage cavity 111 . The air outlet channel 13 communicates with the suction nozzle 10 . In one embodiment, the atomizing core 12 is at least partly accommodated in the housing 11 , and the atomizing core 12 is covered with an atomizing cavity 14 , and the atomizing cavity 14 communicates with the air outlet channel 13 . The aerosol formed by heating the atomizing core 12 and atomizing the substrate to be atomized passes through the air outlet channel 13 to the suction nozzle 10 to be inhaled by the user. Wherein, the atomizing core 12 is electrically connected with the power supply assembly 2 to heat and atomize the substrate to be atomized. In this embodiment, the cross-sectional area of the housing 11 perpendicular to the central axis of the atomizer 1 is circular. It should be understood that in other embodiments, the housing 11 is perpendicular to the central axis of the atomizer 1 The cross-sectional area in the direction can be other shapes such as rectangle, ellipse, trapezoid, triangle, etc., and it can be designed according to specific requirements.

Please refer to FIG. 3 and FIG. 4 , FIG. 3 is a schematic structural diagram of an embodiment of an atomizing core provided in the present application, and FIG. 4 is a schematic structural diagram of another embodiment of an atomizing core provided in the present application.

The atomizing core 12 includes a liquid guiding element 20 and a heating element 30 disposed on the liquid guiding element 20 . The liquid guiding element 20 has an atomizing surface 21 and a liquid absorbing surface 22 . The liquid guiding element 20 transports the substance 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.

The heating element 30 is arranged on the atomizing surface 21 of the liquid guiding element 20 , and the heating element 30 is used for heating and atomizing the substrate to be atomized leading to the atomizing surface 21 . In a specific embodiment, the heating element 30 includes an S-shaped heating circuit, and may also be a ring-shaped heating circuit. Wherein, the heating element 30 includes a heating film, and the metal composition of the heating film includes at least one of platinum, gold, silver, silver-palladium, and silver-platinum. The heating element 30 also includes electrodes 25 connected to both ends of the heating element 30 .

The liquid guide 20 includes an infrared radiation portion 23 , and the atomizing surface 21 is disposed on the infrared radiation portion 23 of the liquid guide 20 . By setting the infrared radiation part 23, the loss of heat released by the heating element 30 can be reduced, and the utilization rate of heat energy can be improved. The infrared radiation part 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 guiding element 20 . In order to better preheat the substrate to be atomized in the liquid guiding element 20, the radiation temperature of the infrared radiation part 23 is 45°C-95°C. When the high-viscosity substrate to be atomized in the liquid guide 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, making the substrate to be atomized The matrix can reach the atomizing surface 21 faster and be heated and atomized by the heating element 30, that is, the atomization efficiency is high, and the amount of aerosol will increase, which improves the user's taste; The atomized base is continuously heated and atomized by the heating element 30, which can avoid the temperature rise of the heating element 30, reduce the risk of dry burning, and make the suction taste pure.

The liquid guide 20 includes at least an infrared radiation part 23 . In one embodiment, the liquid guiding element 20 only includes the infrared radiation part 23 . In another embodiment, the liquid guiding element 20 includes an infrared radiation portion 23 and a porous non-infrared matrix 24 disposed on a side away from the infrared radiation portion 23 from the atomizing surface 21 . The material of the infrared radiation part 23 is porous infrared ceramics or infrared radiation coating 232, the material of the porous non-infrared substrate 24 is porous non-infrared ceramics, and the pore diameters of the porous infrared ceramics and the porous non-infrared ceramics are both 10 microns to 100 microns, and the pores The rate is 40% to 70%.

In a specific embodiment, as shown in FIG. 3 , 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 the atomizing surface 21, and the other is the suction surface. The liquid surface 22 and the heating element 30 are arranged on the atomizing surface 21 . In this embodiment, the inner surface of the hollow tubular body is used as the atomizing surface 21 , the outer surface of the hollow tubular body is used as the liquid absorption 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 surrounds the atomizing chamber 14 . The electrode 25 is led out from the end of the atomization chamber 14 away from the gas outlet channel 13 . In other embodiments, the electrodes 25 can be drawn out from both ends of the hollow tubular body perpendicular to the atomizing surface 21 and the liquid absorbing surface 22 . In another specific embodiment, as shown in FIG. 4, the liquid guiding part 20 can be a plate body, the heating element 30 is arranged on a surface of the plate body, and the surface of the heating element 30 is set on the plate body as the atomizing surface 21, and the plate body The surface of the body opposite to the atomizing surface 21 serves as the liquid-absorbing surface 22.

Please refer to Fig. 5 and Fig. 6, Fig. 5 is a schematic view of the longitudinal section structure of the first embodiment of the atomization core provided in Fig. 3; Fig. 6 is a schematic view of the structure of the first embodiment of the atomization core provided in Fig. 4 .

Specifically, the liquid guiding element 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 disposed 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 atomizing 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.

In a specific embodiment, the liquid guiding element 20 includes an infrared radiation portion 23 , and the infrared radiation portion 23 only includes a porous infrared matrix 231 . That is to say, both the first layer structure 50 and the second layer structure 60 are the porous infrared matrix 231 and serve as the infrared radiation part 23 together. One surface of the porous infrared matrix 231 is provided with a heating element 30 , the surface of the porous infrared matrix 231 provided with the heating element 30 is used as the atomizing surface 21 , and the surface of the porous infrared matrix 231 opposite to the atomizing surface 21 is used as the liquid absorbing surface 22 . Wherein, the thickness of the infrared radiation part 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 to say, from the atomizing surface 21 of the porous infrared matrix 231 to the opposite side of the atomizing surface 21 The distance between the liquid-absorbing surfaces 22 is 0.2mm-3mm. When the thickness of the infrared radiating part 23 is too thin, the speed of liquid conduction will be affected too fast, resulting in that the substrate to be atomized transmitted to the atomizing surface 21 will not be heated and atomized by the heating element 30 in time, and then the phenomenon of "exploding liquid" will appear. When the infrared radiation part 23 is too thick, it will cause the radiation penetration of infrared rays to weaken, thereby weakening the preheating effect of the infrared radiation part 23; transfer efficiency of the matrix.

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

In a specific embodiment, the raw materials forming the first layer structure 50 of the liquid guiding element 20 include a first powder and a first solvent. The first solvent is the 25% dehydrated alcohol of the first solvent gross mass by mass percentage, the isobutanol that mass percentage is the 30.5% of the first solvent gross mass, the butyl acetate that mass percentage is the 20% of the first solvent gross mass Esters, oleic acid dispersant whose mass percentage is 1% of the total mass of the first solvent, polyvinyl acetal binder whose mass percentage is 15% of the total mass of the first solvent, mass percentage of the total mass of the first solvent 4% of dioctyl phthalate, mass percent of 4% of the first solvent total mass of dibutyl phthalate and mass percent of the first solvent of 0.5% of the total mass of the silane coupling agent composition .

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

In a specific embodiment, the raw material for forming the second layer structure 60 of the liquid guiding element 20 includes a second powder and additives. The auxiliary agent consists of 65% of the total mass of the auxiliary agent as natural paraffin, 1% of the stearic acid as the mass percentage of the auxiliary agent, and 10% of the phthalate esters as the mass percentage of the auxiliary agent. The plastic agent, the polyethylene whose mass percentage is 10% of the total mass of the auxiliary agent and the ethylene-vinyl acetate copolymer whose mass percentage is 14% of the total mass of the auxiliary agent are composed.

Please refer to FIG. 7 and FIG. 8 , FIG. 7 is a schematic longitudinal section structure diagram of the second embodiment of the atomization core provided in FIG. 3 , and FIG. 8 is a schematic structural diagram of the second embodiment of the atomization core provided in FIG. 4 .

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, and the surface of the porous non-infrared matrix 24 away from the infrared radiation portion 23 serves as a liquid absorbing The surface 22 , the surface of the infrared radiation part 23 away from the porous non-infrared matrix 24 serves as the atomizing surface 21 . The infrared radiation part 23 is a porous infrared matrix 231 or an infrared radiation coating 232 . That is, the liquid guiding element 20 includes a porous non-infrared matrix 24 and a porous infrared matrix 231 ; or the liquid guiding element 20 includes a porous non-infrared matrix 24 and an infrared radiation coating 232 . That is to say, at least part of the first layer structure 50 is the infrared radiation part 23 , and the second layer structure 60 is the porous non-infrared matrix 24 . Wherein, the thickness of the infrared radiating part 23 is 0.01mm-0.5mm. When the thickness of the infrared radiating part 23 is too thin, the infrared heat radiation effect cannot be guaranteed, and if it is too thick, the requirements for the manufacturing process are more stringent and the cost is wasted. For example, it is unfavorable for the infrared radiation part 23 to be tightly wound on the mold. The thickness of the porous non-infrared matrix 24 is 0.2mm-3mm. If the thickness of the porous non-infrared matrix 24 is too thin, it will affect the liquid conduction speed too fast, causing the matrix to be atomized to be transported to the atomizing surface 21 to be too late to be preheated by the infrared radiation part 23 and heated and atomized by the heating element 30. liquid" phenomenon. When the porous non-infrared matrix 24 is too thick, it will cause the radiation penetration of infrared rays to weaken, thereby weakening the preheating effect of the infrared radiation part 23; the preheating effect of the infrared radiation part 23 becomes worse and the thickness of the porous non-infrared matrix 24 If it is too thick, it will also affect the transmission efficiency of the high-viscosity substrate to be atomized, resulting in dry burning of the heating element 30 .

In a specific embodiment, the first layer structure 50 is used as the infrared radiation part 23 , and the second layer structure 60 is the 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, the porous non-infrared matrix 24 is arranged on the side of the porous infrared matrix 231 away from the heating element 30, and is fixedly connected with the porous infrared matrix 231, and the porous non-infrared matrix 24 is away from the porous infrared matrix The surface of 231 serves as the liquid-absorbing 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 atomizing surface 21 . The thickness of the porous infrared matrix 231 is 0.01mm-0.5mm, and the thickness of the porous non-infrared matrix 24 is 0.2mm-3mm.

In this embodiment, the raw materials forming the first layer structure 50 of the liquid guiding element 20 include a first powder and a first solvent. That is to say, the raw materials forming the porous infrared matrix 231 of the first layer structure 50 include the first powder and the first solvent.

The raw materials forming the second layer structure 60 of the liquid guiding element 20 include fourth powder and additives. That is to say, the raw materials of the porous non-infrared matrix 24 forming the second layer structure 60 include the fourth powder and additives. The fourth powder accounts for 55%-80% of the total mass of the fourth powder and additives. The fourth powder includes ordinary ceramic powder, the second sintering aid and the second pore-forming agent; the second sintering aid accounts for The percentage of the mass of the fourth powder is 2% to 40%, and the percentage of the second pore-forming agent to the mass of the fourth powder is 5% to 80%; plasticizer and the second binder, the skeleton forming agent accounts for 50% to 90% of the auxiliary mass; the second surfactant accounts for 1% to 10% of the auxiliary mass; the second plasticizer accounts for the auxiliary The mass percentage of the agent is 1%-20%; the percentage of the second binder in the fourth powder mass is 10%-40%. 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 repeated here.

In a specific embodiment, the raw materials forming the second layer structure 60 of the liquid guiding element 20 include fourth powder and additives. The auxiliary agent is composed of 55% natural paraffin wax of the total auxiliary agent quality, the 15wt.% polyethylene wax of the auxiliary agent's total mass, the 2% glycerin of the auxiliary agent's total mass, and the auxiliary agent 2% of the total mass of phthalates, 6% of the mass percent of the total mass of phosphate esters, 8% of the mass percent of the total mass of polystyrene and mass percent of the total mass of the additives Composition of 12% ethylene-ethyl acrylate copolymer.

Please refer to FIG. 9 and FIG. 10 , FIG. 9 is a schematic view of the longitudinal section structure of the third embodiment of the atomization core provided in FIG. 3 , and FIG. 10 is a schematic view of the structure of the third embodiment of the atomization core provided in FIG. 4 .

In a specific embodiment, the first layer structure 50 includes an infrared radiation coating 232 and a porous non-infrared substrate 24 . Wherein, the infrared radiation coating 232 is used as the infrared radiation part 23 , and the second layer structure 60 is the porous non-infrared matrix 24 . The thickness of the infrared radiation coating 232 is smaller than that of the porous infrared substrate 231 . Specifically, the liquid guide 20 includes an infrared radiation coating 232 and a porous non-infrared substrate 24 . Infrared radiation coating 232 is arranged on a surface of porous non-infrared substrate 24, and the surface of porous non-infrared substrate 24 is provided with infrared radiation coating 232 as atomization surface 21, and the surface of porous non-infrared substrate 24 away from infrared radiation coating 232 is used as absorbing surface. Liquid level 22. The heating element 30 is disposed on the atomizing surface 21 . The thickness of the infrared radiation coating 232 is 0.01mm-0.5mm, and the thickness of the porous non-infrared substrate 24 is 0.2mm-3mm.

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 binding phase and a third pore-forming agent; the binding 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 the infrared ceramic powder and one time of the total mass of the binding phase; the third solvent includes the third dissolving agent, the third thickening agent, the third surfactant, thixotropic agent and flow control agent; the third dissolving agent accounts for the third solvent quality The percentage is 55% to 99%; the third thickener accounts for 1% to 20% of the third solvent; the third surfactant accounts for 1% to 10% of the third solvent; the thixotropic agent accounts for The mass percentage of the third solvent is 0.1%-5%; the mass percentage of the casting control agent in the third solvent is 0.1%-10%.

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 consists of Zn-Mg-Al-Si cordierite system infrared ceramic powder with a mass percentage of 52% of the third powder's total mass, a mass percentage of glass powder with a mass percentage of 20% of the third powder's total mass, and a mass percentage The composition is composed of 5% kaolin of the total mass of the third powder, 5% albite by mass percentage of the total mass of the third powder, and 18% starch by mass percentage of the total mass of the third powder. The 3rd solvent is the 60% terpineol of the 3rd solvent gross mass by mass percentage, the butyl carbitol acetate that mass percentage is 22.5% of the 3rd solvent gross mass, mass percentage is 10% of the 3rd solvent gross mass % of tributyl citrate, mass percent is the 5% ethyl cellulose of the third total mass of the solvent, mass percent is the 1.5% Span 85 of the third total mass of the third solvent, mass percent is the third total mass of the third solvent 0.5% of hydrogenated castor oil and 0.5% of furoic acid with a mass percent of the total mass of the third solvent.

In this embodiment, the raw materials for forming the porous non-infrared matrix 24 in the first layer structure 50 include the fifth powder and the first solvent, and the fifth powder includes ordinary ceramic powder, the first sintering aid and the first pore-forming agent. agent; the percentage of the first sintering aid to the mass of the fifth powder is 1% to 40%, and the mass percentage of the first pore-forming agent is no more than twice the total mass of ordinary ceramic powder and the first sintering aid; the first solvent Including the first dissolving agent, dispersing agent, first binding agent, first plasticizer and coupling agent, the percentage of the first dissolving agent accounting for the mass of the fifth powder is 80% to 150%; the first binding agent accounting for The mass percentage of the fifth powder is 5% to 20%; the percentage of the dispersant to the mass of the fifth powder is 0.1% to 5%; the percentage of the first plasticizer to the mass of the first binder is 40% to 70% %; the percentage of the coupling agent in the mass of the fifth powder is 0% to 2%.

In this embodiment, the raw materials for forming the porous non-infrared matrix 24 in the second layer structure 60 include fourth powder and additives.

In a specific embodiment, the material of the infrared ceramic powder includes a cordierite system, a spinel system, a perovskite system and a magnetoplumbite system. According to the material emissivity stability with temperature change, thermal expansion coefficient and thermal conductivity, select the appropriate material system powder of infrared ceramic powder. Among them, the cordierite system is mainly based on Mg ₂ Al ₄ Si ₅ O ₁₈ , and one or more of Li ₂ O, ZnO, NiO, CoO, CuO, Fe ₂ O ₃ , Cr ₂ O ₃ , TiO ₂ , MnO ₂ Several 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 One or several transition metal oxides in ₂ etc. are sintered in a high temperature oxidation atmosphere; the perovskite series is composed of trivalent rare metal oxides such as La, Sr, Pr, Eu and Fe, Cr, Mn, Al, Ti , Cu, Ca and other transition metal oxides, etc.; the magnetoplumbite system is mainly presented in the form of XAl ₁₂ O ₁₉ , and X is an alkaline earth metal such as Mg, Mn, Fe, Ca, Sr, etc. (except Ba) or one or more of rare earth metal ions such as La, Ce, Pr, Nd, Er, Ho, etc.

The third dissolving agent constituting the infrared radiation coating 232 includes terpineol, butyl carbitol acetate, butyl cellosolve, tributyl citrate, ethylene glycol ethyl ether acetate, isopropanol or diphthalate One or more of butyl esters; the third thickener is cellulose and acrylic, specifically including ethyl cellulose, nitrocellulose, polyisoethylene, polyisobutylene polyvinyl alcohol, polymethylstyrene or One or more of polymethyl methacrylate; the thixotropic agent includes one or more of castor oil, hydrogenated castor oil or organic bentonite; the third surfactant often adopts absolute ethanol, soybean lecithin or One or more of Span 85; the casting control agent includes one or more of terephthalic acid, ammonium sulfate or furoic acid.

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

The atomizing core 12 in the atomizer 1 provided in this embodiment includes a liquid-guiding element 20 and a heating element 30. The liquid-guiding element 20 has an atomizing surface 21 and a liquid-absorbing surface 22, and the substrate to be atomized is transported from the liquid-absorbing surface 22. To the atomizing surface 21; the heating element 30 is arranged on the atomizing surface 21, and is used for heating and atomizing the substrate to be atomized; wherein, the liquid guide 20 includes an infrared radiation part 23, and the infrared radiation part 23 has an atomizing surface 21, The infrared radiation part 23 is used for absorbing the heat released by the heating element 30 to radiate infrared rays to preheat the substrate to be atomized in the liquid guiding element 20 . In this application, the infrared radiation part 23 is arranged on the liquid guide part 20, and the atomization 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 part 30, and then radiate infrared rays to the liquid guide part 20. The outer wall or outer surface preheats the substrate to be atomized around the heating element 30, which can not only improve the heat utilization rate of the heating element 30, but also speed up the transmission rate of the substrate to be atomized, and improve the transmission of the substrate to be atomized to the atomization surface 21 The amount of liquid supplied can effectively avoid the phenomenon of dry burning of the atomizing core 12; it can also increase the content of the aerosol formed after the atomization substrate is atomized, and improve the user experience.

This embodiment provides a manufacturing method of the atomizing core 12 , and the specific manufacturing method of the atomizing core 12 includes the following steps.

Please refer to FIG. 11 and FIG. 12 . FIG. 11 is a schematic flowchart of an embodiment of a method for manufacturing an atomizing core provided in the present application.

S1: Prepare a porous sheet green embryo; prepare a prefabricated body of a heating element on the porous sheet green embryo; wherein, the porous sheet green embryo includes a porous infrared layer.

Fig. 12(a) is a schematic structural diagram of the first embodiment corresponding to step S1 of the manufacturing method of the atomizing core provided in Fig. 11, and Fig. 12(b) is a second embodiment corresponding to step S1 of the manufacturing method of the atomizing core provided in Fig. 11 Schematic diagram of the structure of the embodiment.

Specifically, the raw materials used to form the porous sheet-layer green body 40 are made into a first slurry, and the first slurry is formed into a flake-shaped porous sheet-layer green body 40 through a casting process. The tape casting process refers to placing a fluid slurry on a bearing plane, and forming a thin sheet with a uniform thickness by means of scraping or rolling. Wherein, the first slurry forms a porous infrared layer 41, as shown in FIG. 12(a).

In another embodiment, the first slurry is formed into a flake-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 produce a porous sheet layer. Embryo 40. Wherein, the infrared radiation coating 232 forms a porous infrared layer 41, as shown in FIG. 12(b).

Specifically, the heating element preform 70 is made on the surface of the porous infrared layer 41 by any means of sputtering, vapor deposition, silk screen printing, coating, and inkjet printing.

S2: forming the first layer structure on the mould, with the porous sheet-layer green body having the preform of the heating element.

Please refer to Fig. 13, Fig. 13(a) is a structural schematic diagram of the first embodiment corresponding to the step S2 of the manufacturing method of the atomizing core provided in Fig. 11, and Fig. 13(b) is the steps of the manufacturing method of the atomizing core provided in Fig. 11 A schematic structural diagram of the second embodiment corresponding to S2.

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

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, and the porous sheet green embryo 40 is tiled in the second mold 82, The first layer structure 50 is formed so that one side of the porous sheet green body 40 provided with the heating element preform 70 is close to the inner bottom surface of the second mold 82 .

S3: Prepare the second layer structure on the side of the first layer structure away from the prefabricated body of the heating element.

Please refer to Fig. 14, Fig. 14(a) is a structural schematic diagram of the first embodiment corresponding to step S3 of the manufacturing method of the atomizing core provided in Fig. 11, and Fig. 14(b) is a step of the manufacturing method of the atomizing core provided in Fig. 11 A schematic structural diagram of the second embodiment corresponding to S3.

Specifically, the second layer structure 60 is formed on the side of the first layer structure 50 away from the heating element preform 70 through injection molding, gel injection molding, dry pressing and the like. 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 preformed body 70 of the heating element. A side surface of the second layer structure 60 close to the first layer structure 50 is in close contact with a side surface of the first layer structure 50 away from the heating element preform 70 .

In one embodiment, as shown in FIG. 14( a ), in the first mold 81 , the second slurry is poured between the porous sheet green body 40 and the outer ring to form the second layer structure 60 . In another embodiment, as shown in FIG. 14(b), in the second mold 82, the second slurry is poured on the side of the porous sheet green body 40 away from the prefabricated body 70 of the heating element to form the second layer structure 60. .

S4: removing the mold, and sintering the first layer structure, the second layer structure, and the prefabricated body of the heating element as a whole.

Please refer to Fig. 15, Fig. 15(a) is a structural schematic diagram of the first embodiment corresponding to step S4 of the manufacturing method of the atomizing core provided in Fig. 11, and Fig. 15(b) is a step of the manufacturing method of the atomizing core provided in Fig. 11 S4 corresponds to a schematic structural diagram of the second embodiment.

Specifically, the second layer structure 60 , the first layer structure 50 and the heating element preform 70 placed in the first mold 81 or the second mold 82 are placed under normal pressure as a whole. In one embodiment, after the standing is completed, the first mold 81 or the second mold 82 is withdrawn 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 prefabricated body of the heating element 70 are debonded at a temperature of 350°C to 800°C; Atmospheric pressure sintering is carried out at 850°C to 1500°C. The heating element preform 70 is sintered as a whole to form the heating element 30 . In one embodiment, as shown in Figure 15(a), a hollow tubular atomizing core 12 is obtained after normal pressure sintering, and the prefabricated inner layer tube 51 is sintered to form the first layer structure 50; after the prefabricated outer layer tube 61 is sintered, A second layer structure 60 is formed. The atomizing core 12 includes a liquid guiding element 20 and a heating element 30 . The liquid guiding element 20 has a first layer structure 50 in a hollow tubular inner layer and a second layer structure 60 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 atomizing core 12 is obtained after atmospheric pressure sintering, and the atomizing core 12 includes a liquid guiding element 20 and a heating element 30 . The liquid guiding element 20 has a first layer structure 50 and a second layer structure 60 , the side of the first layer structure 50 away from the second layer structure 60 is provided with a heating element 30 , and the first layer structure 50 is in close contact with the second layer structure 60 .

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

The raw material for forming the porous sheet green body 40 is made into a first slurry. Specifically, raw materials for forming the porous sheet green body 40 are prepared, and the prepared raw materials are uniformly mixed to form the first slurry. The first slurry was ball-milled in a drum for 24 hours to obtain a stable casting slurry, which was vacuum-degassed and then cast and cut into flake-shaped porous infrared layers 41 . Wherein, the raw material for forming the first slurry includes the first powder and the first solvent, the first powder includes infrared ceramic powder, the first sintering aid and the first pore-forming agent; the first sintering aid accounts for the first powder The mass percentage is 1% to 40%, and the mass percentage of the first pore-forming agent is no more than twice the total mass of the infrared ceramic powder and the first sintering aid; Binder, first plasticizer and coupling agent, the percentage of the first dissolving agent in the mass of the first powder is 80% to 150%; the percentage of the first binder in the mass of the first powder is 5% to 20% %; the percentage of the dispersant in the mass of the first powder is 0.1% to 5%; the percentage of the first plasticizer in the mass of the first binder is 40% to 70%; the mass of the coupling agent in the mass of the first powder is 0.1% to 5%. The percentage is 0% to 2%. Wherein, 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 ratio of the first layer structure 50 .

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, and a mass percentage of 55% of the mass of the first powder. 12% of glass powder, kaolin clay of 5% of the mass of the first powder, and polystyrene balls of 28% of the mass of the first powder. The first solvent forming the porous infrared layer 41 consists of a first dissolving agent whose mass percentage is 75.5% of the first solvent mass, a dispersant whose mass percentage is 1% of the first solvent mass, and a mass percentage of 15% of the first solvent mass The first binder, the first plasticizer whose mass percentage is 8% of the first solvent mass, and the coupling agent whose mass percentage is 0.5% of the first solvent mass, the mass percentage of the first powder is 60% of the total mass of the first solvent and the first powder.

The first slurry is made into a porous sheet-layer green body 40 through a casting process. Specifically, the first slurry prepared above is made into a porous sheet green body 40 through a casting process, that is, a porous sheet thin plate is formed. In an optional embodiment, the first slurry prepared above may also be rolled to form the porous sheet green body 40 .

The prefabricated body 70 of the heating element is produced on the porous sheet green body 40 by silk screen printing. Specifically, the heating element preform 70 is printed on one surface of the porous sheet green body 40 . In a specific embodiment, the material of the heating element preform 70 may be silver, silver palladium, silver platinum, or any one of gold and platinum. 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 under the condition of 850-1500 degrees Celsius; wherein, the preparation of the heating element preform 70 It can also be made by any method of sputtering, vapor deposition, silk screen printing, coating, and inkjet printing, and the heating element preform 70 can also be prepared by other methods, as long as the heating element preform 70 meeting the requirements can be produced That's it. As shown in FIG. 12( a ), the heating element preform 70 is disposed on the porous infrared layer 40 , that is, the heating element preform 70 is disposed on the porous infrared matrix 231 .

The porous sheet green body 40 is placed on the first mold 81 or the second mold 82 to form the first layer structure 50 . In one embodiment, the porous sheet green body 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 body 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. Wherein, the side of the preform 70 printed on the porous sheet green body 40 is close to the surface of the inner ring and the outer ring. In another embodiment, the porous sheet green body 40 is formed into a hollow tubular structure around the outer ring of the first mold 81 , that is, the first layer structure 50 is formed. Wherein, the side of the printed heating element preform 70 on the porous sheet green body 40 is close to the surface of the outer ring and the inner ring. In yet another embodiment, as shown in FIG. 13( b ), the porous sheet green body 40 is tiled in the second mold 82 to form the first layer structure 50, so that the porous sheet provided with the prefabricated body 70 of the heating element One side of the green layer 40 is adjacent to the inner bottom surface of the mold 80 .

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

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 second powder mass, and a mass percentage of the second powder 12% by mass of glass powder, 5% by mass of kaolin of the second powder by mass, and 23% by mass of polymethyl methacrylate balls by mass of the second powder. The auxiliary agent forming the second layer structure 60 consists of a skeleton forming agent whose mass percentage is 65% of the auxiliary agent quality, a second surfactant whose mass percentage is 1% of the auxiliary agent quality, and a mass percentage of 10% of the auxiliary agent quality. The second plasticizer and the second binder whose mass percentage is 24% of the auxiliary agent are composed, and the mass percentage of the second powder is 70% of the total mass of the auxiliary agent and the second powder. Mix the second powder and additives in a three-dimensional mixer for 2 hours, then banbury at 180° C. for 1.5 hours, cool and crush to obtain granular injection molding feedstock, that is, the second slurry.

The second slurry is injected into the side of the first layer structure 50 away from the heating element preform 70 to form the second layer structure 60 . Specifically, the second slurry is injected on the side of the first layer structure 50 away from the prefabricated body 70 of the heating element, 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 FIG. 14( a ), in the first mold 81 , the second slurry is poured between the porous sheet green body 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 body 40 and the inner ring to form the second layer structure 60 . In yet another specific embodiment, as shown in FIG. 14(b), in the second mold 82, the second slurry is poured on the side of the porous sheet green body 40 away from the prefabricated body 70 of the heating element to form the second layer. structure60.

The mold is removed, and the first layer structure 50 , the second layer structure 60 and the heating element preform 70 are sintered as a whole. Specifically, place the second layer structure 60, the first layer structure 50 and the preform 70 of the heating element placed in the mold 80 as a whole under normal pressure; place the mold 80 along the second layer structure 60 and/or the first layer The longitudinal axis direction of the structure 50 is withdrawn; the second layer structure 60, the first layer structure 50 and the prefabricated body of the heating element 70 are degummed under the condition of 350 ° C ~ 800 ° C; in the air atmosphere, the first layer The structure 50 , the second layer structure 60 and the preformed body 70 of the heating element are sintered under normal pressure at 850° C. to 1500° C. as a whole. In a specific embodiment, after the operation of forming the prefabricated outer layer pipe 61 from the second slurry is completed, the entire prefabricated structure is allowed to stand for 15 minutes under normal pressure, and then the mold is removed, and the first layer structure 50 and the second layer structure are retained. The layer structure 60 and the heat generating element preform 70 are integrated. Firstly, the second layer structure 60, the first layer structure 50, and the prefabricated body of the heating element 70 are debonded at 500°C for 48 hours; then the first layer structure 50, the second layer structure 60 and the The heating element preform 70 is sintered under normal pressure, and the sintering temperature is 1000 degrees Celsius. After the sintering is completed, the two electrodes 25 of the heating element preform 70 are led out from the end of the atomization chamber 14 away from the gas outlet channel 13 , so that the heating element preform 70 is connected to the power supply assembly 2 through the electrodes 25 .

In the second specific embodiment, the first layer structure 50 is used as the porous infrared layer 41 , and the second layer structure 60 is not used 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 matrix 231 .

The specific steps for preparing the atomizing core 12 in the second specific embodiment are similar to the specific steps for preparing the atomizing core 12 in the first specific embodiment above, but the raw materials for forming the second slurry in the second specific embodiment are the same as those in the first specific embodiment above. The raw materials for forming the second slurry are different in specific embodiments.

In this embodiment, the raw materials for forming the second slurry include the fourth powder and additives. The fourth powder accounts for 55%-80% of the total mass of the fourth powder and additives. The fourth powder includes ordinary ceramic powder, the second sintering aid and the second pore-forming agent; the second sintering aid accounts for The percentage of the mass of the fourth powder is 2% to 40%, and the percentage of the second pore-forming agent to the mass of the fourth powder is 5% to 80%; plasticizer and the second binder, the skeleton forming agent accounts for 50% to 90% of the auxiliary mass; the second surfactant accounts for 1% to 10% of the auxiliary mass; the second plasticizer accounts for the auxiliary The mass percentage of the agent is 1%-20%; the percentage of the second binder in the fourth powder mass is 10%-40%. Mix the fourth powder and additives in a three-dimensional mixer for 3 hours, banbury at 150° C. for 2 hours, cool and crush to obtain granular injection molding feedstock, that is, the second slurry.

In the third specific embodiment, the first layer structure 50 is only partially used as the porous infrared layer 41 , and the second layer structure 60 is not used 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 .

The specific steps for preparing the atomizing core 12 in the third specific embodiment are similar to the specific steps for preparing the atomizing core 12 in the first specific embodiment above, but the process and materials for forming the porous sheet green embryo 40 in the third specific embodiment And the raw material for forming the second slurry is different from the process and material for forming the porous sheet green body 40 and the raw material for forming the second slurry in the above-mentioned first embodiment.

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

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

Afterwards, an infrared radiation coating 232 is coated on the surface of the porous non-infrared layer 42 and dried to obtain a porous sheet-layer green body 40 . Wherein, the infrared radiation coating 232 serves as the 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 binding phase and a third pore-forming agent; the binding phase accounts for the third powder The mass percentage is 1% to 40%, and the mass percentage of the third pore-forming agent is no more than twice the total mass of the infrared ceramic powder and the bonding phase; the third solvent includes the third dissolving agent, the third thickening agent, the third A surfactant, a thixotropic agent and a casting control agent; the third dissolving agent 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 percentage of the third surfactant accounting for the mass of the third solvent is 1%-10%; the percentage of the thixotropic agent accounting for the mass of the third solvent is 0.1%-5%; the percentage of the casting control agent accounting for the mass of the third solvent is 0.1% ~10%.

In a specific embodiment, the third dissolving agent that forms the infrared radiation coating 232 includes terpineol, butyl carbitol acetate, butyl cellosolve, tributyl citrate, ethylene glycol ether acetate, isopropyl One or more of alcohol or dibutyl phthalate; the third thickener is cellulose and acrylic, including ethyl cellulose, nitrocellulose, polyisoethylene, polyisobutylene polyvinyl alcohol One or more of , polymethylstyrene or polymethyl methacrylate; thixotropic agent includes one or more of castor oil, hydrogenated castor oil or organic bentonite; the third surfactant is often used without One or more of water ethanol, soybean lecithin or Span 85; the casting control agent includes one or more of terephthalic acid, ammonium sulfate or furoic acid.

In this embodiment, the raw material for forming the second slurry is the same as the raw material for forming the second slurry in the second specific embodiment, and will not be repeated here.

In the manufacturing method of the atomizing core 12 provided in this embodiment, a porous sheet green body 40 is prepared; a heating element preform 70 is made on the porous sheet green body 40; wherein, the porous sheet green body 40 includes a porous infrared Layer 41. Form the first layer structure 50 on the mold 80 with the porous sheet green body 40 having the heating element preform 70; prepare the second layer structure 60 on the side of the first layer structure 50 away from the heating element preform 70; remove the mold 80 , sintering the first layer structure 50 , the second layer structure 60 and the heating element preform 70 as a whole. The heating element preform 70 is sintered to form the heating element 30 . The first layer structure 50 and the second layer structure 60 are integrally sintered to form the liquid guide 20 . 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 guiding element 20 . In this application, the infrared radiation part 23 is arranged on the liquid guide part 20, and the atomization 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 part 30, and then radiate infrared rays to the liquid guide part 20. The outer wall or outer surface preheats the substrate to be atomized around the heating element 30, which can not only improve the heat utilization rate of the heating element 30, but also speed up the transmission rate of the substrate to be atomized, and improve the transmission of the substrate to be atomized to the atomization surface 21 The amount of liquid supplied can effectively avoid the phenomenon of dry burning of the atomizing core 12; it can also increase the content of the aerosol formed after the atomization substrate is atomized, and improve the user experience.

Other embodiments of the application will be readily apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The specification and examples are to be considered exemplary only, with the true scope and spirit of the disclosure indicated by the appended claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and 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

An atomizing core, wherein the atomizing core includes:

a liquid guiding member having an atomizing surface and a liquid-absorbing surface, the substrate to be atomized is transferred from the liquid-absorbing surface to the atomizing surface;

a heating element, arranged on the atomizing surface, for heating and atomizing the substrate to be atomized;

Wherein, the liquid guiding part includes an infrared radiation part, the infrared radiation part has the atomization surface, and the infrared radiation part is used to absorb the heat released by the heating part to radiate infrared rays to preheat the liquid guiding part The substrate to be atomized in.
The atomizing core according to claim 1, wherein the infrared radiation part comprises a porous infrared matrix, and the porous infrared matrix serves as the infrared radiation part.
The atomizing core according to claim 2, wherein the thickness of the porous infrared matrix is 0.2mm-3.0mm.
The atomizing core according to claim 1, wherein the liquid guiding member further includes a porous non-infrared matrix, the porous non-infrared matrix is fixedly connected with the infrared radiation part, and the porous non-infrared matrix is far away from the infrared The surface of the radiating part is used as the liquid-absorbing surface, and the surface of the infrared radiating part away from the porous non-infrared matrix is used as the atomizing surface.
The atomizing core according to claim 4, wherein the infrared radiation part is a porous infrared matrix or an infrared radiation coating.
The atomizing core according to claim 4, wherein the thickness of the infrared radiation part is 0.01mm-0.5mm, and the thickness of the porous non-infrared matrix is 0.2mm-3.0mm.
The atomizing core according to claim 4, wherein the material of the infrared radiation part is porous infrared ceramics, the material of the porous non-infrared matrix is porous non-infrared ceramics, and the porous infrared ceramics and the porous non-infrared The pore diameter of the ceramic is 10 microns to 100 microns, and the porosity is 40% to 70%.
The atomizing core according to claim 1, wherein the liquid guiding member is a hollow tubular body, one of the inner and outer sides of the hollow tubular body serves as the atomizing surface, and the other serves as the liquid-absorbing surface. surface; or the liquid-guiding member is a plate body, one surface of the two opposite surfaces of the plate body is used as the atomizing surface, and the other surface is used as the liquid-absorbing surface.
The atomizing core according to claim 1, wherein the radiation temperature of the infrared radiation part is 45°C-95°C.
The atomizing core according to claim 2, wherein the infrared radiation part is the porous infrared matrix, the material forming the porous infrared matrix includes a first powder and a first solvent, and the first powder includes Infrared ceramic powder, a first sintering aid, and a first pore-forming agent; the percentage of the first sintering aid in the mass of the first powder is 1% to 40%, and the mass percentage of the first pore-forming agent is No more than twice the total mass of the infrared ceramic powder and the first sintering aid; the first solvent includes a first dissolving agent, a dispersant, a first binder, a first plasticizer and a coupling agent, so The percentage of the first dissolving agent in the mass of the first powder is 80% to 150%; the percentage of the first binder in the mass of the first powder is 5% to 20%; the dispersant The percentage of the mass of the first powder is 0.1% to 5%; the percentage of the first plasticizer to the mass of the first binder is 40% to 70%; the coupling agent accounts for the The mass percentage of the first powder is 0%-2%.
The atomizing core according to claim 10, wherein the material forming the porous infrared matrix further includes a second powder and an auxiliary agent, and the second powder accounts for the total of the second powder and the auxiliary agent. The percentage by mass is 55%-80%, and the second powder includes infrared ceramic powder, a second sintering aid and a second pore-forming agent; the percentage of the second sintering aid to the mass of the second powder is is 2% to 40%, and the percentage of the second pore-forming agent in the mass of the second powder is 5% to 80%; the auxiliary agent includes a skeleton forming agent, a second surfactant, a second plasticizer agent and a second binder, the skeleton forming agent accounts for 50% to 90% of the mass of the auxiliary agent; the second surfactant accounts for 1% to 10% of the mass of the auxiliary agent; The percentage of the second plasticizer in the mass of the auxiliary agent is 1%-20%; the percentage of the second binder in the mass of the second powder is 10%-40%.
The atomizing core according to claim 5, wherein the infrared radiation part is the porous infrared matrix, the material forming the porous infrared matrix includes a first powder and a first solvent, and the first powder includes Infrared ceramic powder, a first sintering aid, and a first pore-forming agent; the percentage of the first sintering aid in the mass of the first powder is 1% to 40%, and the mass percentage of the first pore-forming agent is No more than twice the total mass of the infrared ceramic powder and the first sintering aid; the first solvent includes a first dissolving agent, a dispersant, a first binder, a first plasticizer and a coupling agent, so The percentage of the first dissolving agent in the mass of the first powder is 80% to 150%; the percentage of the first binder in the mass of the first powder is 5% to 20%; the dispersant The percentage of the mass of the first powder is 0.1% to 5%; the percentage of the first plasticizer to the mass of the first binder is 40% to 70%; the coupling agent accounts for the The mass percentage of the first powder is 0%-2%.
The atomizing core according to claim 12, wherein the material forming the porous infrared matrix further includes a second powder and an auxiliary agent, and the second powder accounts for the total of the second powder and the auxiliary agent. The percentage by mass is 55%-80%, and the second powder includes infrared ceramic powder, a second sintering aid and a second pore-forming agent; the percentage of the second sintering aid to the mass of the second powder is is 2% to 40%, and the percentage of the second pore-forming agent in the mass of the second powder is 5% to 80%; the auxiliary agent includes a skeleton forming agent, a second surfactant, a second plasticizer agent and a second binder, the skeleton forming agent accounts for 50% to 90% of the mass of the auxiliary agent; the second surfactant accounts for 1% to 10% of the mass of the auxiliary agent; The percentage of the second plasticizer in the mass of the auxiliary agent is 1%-20%; the percentage of the second binder in the mass of the second powder is 10%-40%.
The atomizing core according to claim 5, wherein 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, and the third powder The body includes infrared ceramic powder, a bonding phase and a third pore-forming agent; the percentage of the bonding phase accounting for the mass of the third powder is 1% to 40%, and the mass percentage of the third pore-forming agent is no more than One time of the total mass of the infrared ceramic powder and the binder phase; the third solvent includes a third dissolving agent, a third thickener, a third surfactant, a thixotropic agent and a casting control agent; The percentage of the third dissolving agent in the mass of the third solvent is 55% to 99%; the percentage of the third thickener in the mass of the third solvent is 1% to 20%; the third surface active The percentage of the thixotropic agent accounting for the mass of the third solvent is 1% to 10%; the percentage of the thixotropic agent accounting for the mass of the third solvent is 0.1% to 5%; the casting control agent accounting for the third solvent The mass percentage is 0.1%-10%.
An atomizer, wherein the atomizer comprises the atomizing core according to claim 1.
An electronic atomization device, wherein the electronic atomization device comprises a power supply assembly and the atomizer according to claim 15, and the power supply assembly supplies power to the atomizer.
A manufacturing method of an atomizing core, wherein the manufacturing method of the atomizing core includes:

preparing a porous sheet green embryo, wherein the porous sheet green embryo includes a porous infrared layer;

making a prefabricated body of a heating element on the porous infrared layer;

forming the first layer structure on the mold with the porous sheet green body having the preform of the heating element;

preparing a second layer structure on the side of the first layer structure away from the preform of the heating element;

The mold is removed, and the whole of the first layer structure, the second layer structure and the preformed body of the heating element is sintered.
The manufacturing method of the atomizing core according to claim 17, wherein the step of preparing the porous sheet green embryo comprises:

making the raw materials for forming the porous infrared layer into a first slurry;

The first slurry is made into the porous infrared layer through a casting process.
The manufacturing method of the atomizing core according to claim 17, wherein the step of preparing the porous sheet green embryo comprises:

Making the raw material for forming the porous non-infrared layer into a first slurry;

Making the porous non-infrared layer from the first slurry through a casting process;

An infrared radiation coating is coated on one surface of the porous non-infrared layer to form the porous infrared layer.
The manufacturing method of the atomizing core according to claim 17, wherein,

The step of preparing a heating element preform on the porous infrared layer includes:

The preformed body of the heating element is produced by any method of sputtering, vapor deposition, silk screen printing, coating and inkjet printing.
The manufacturing method of the atomizing core according to claim 17, wherein,

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

winding the porous sheet green body on the mold to form a prefabricated inner tube, and the prefabricated body of the 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 preform of the heating element includes:

A prefabricated outer tube is formed outside the predicted inner tube.
The manufacturing method of the atomizing core according to claim 17, wherein,

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

laying the porous sheet green body 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 preform of the heating element includes:

The second layer structure is formed on a side of the first layer structure away from the preform of the heating element.
The manufacturing method of the atomizing core according to claim 17, wherein,

The step of preparing the second layer structure on the side of the first layer structure away from the preform of the heating element includes:

making the raw materials used to form the second layer structure into a second slurry;

Injecting the second slurry on the side of the first layer structure away from the preformed body of the heating element, the inner wall surface of the second layer structure and the side of the first layer structure away from the preformed body of the heating element One side surface is snug.
The manufacturing method of the atomizing core according to claim 17, wherein the step of removing the mold and sintering the first layer structure, the second layer structure and the heating element preform as a whole includes :

placing the second layer structure, the first layer structure and the preform of the heating element placed in the mold as a whole under normal pressure;

withdrawing the mold along the longitudinal axis of the second layer structure and/or the first layer structure;

Debinding the second layer structure, the first layer structure and the prefabricated heating element as a whole under the condition of 350°C-800°C;

In an air atmosphere, the whole of the first layer structure, the second layer structure and the preformed body of the heating element is sintered at a temperature of 850° C. to 1500° C. under normal pressure.
The manufacturing method of the atomizing core according to claim 18, wherein the raw materials for forming the first slurry include a first powder and a first solvent, and the first powder includes an infrared ceramic powder, a first sintering aid agent and the first pore-forming agent; the percentage of the first sintering aid to the mass of the first powder is 1% to 40%, and the mass percentage of the first pore-forming agent does not exceed the mass percentage of the infrared ceramic powder and the Twice the total mass of the first sintering aid; the first solvent includes a first dissolving agent, a dispersant, a first binder, a first plasticizer and a coupling agent, and the first dissolving agent accounts for the The mass percentage of the first powder is 80% to 150%; the percentage of the first binder to the mass of the first powder is 5% to 20%; the dispersant to the mass of the first powder The percentage of the first plasticizer is 0.1% to 5%; the percentage of the first plasticizer to the mass of the first binder is 40% to 70%; the percentage of the coupling agent to the mass of the first powder is 0% to 2%.
The manufacturing method of the atomizing core according to claim 19, wherein the raw materials for forming the infrared radiation coating include a third powder and a third solvent, and the third powder includes infrared ceramic powder, a binder phase and The third pore-forming agent; the percentage of the binder phase in the mass of the third powder is 1% to 40%, and the mass percentage of the third pore-forming agent is no more than the infrared ceramic powder and the bonding phase One time of the total mass of the phase; the third solvent includes a third dissolving agent, a third thickener, a third surfactant, a thixotropic agent and a casting control agent; the third dissolving agent accounts for the third The percentage of the mass of the solvent is 55% to 99%; the percentage of the third thickener to the mass of the third solvent is 1% to 20%; the percentage of the third surfactant to the mass of the third solvent 1%-10%; the percentage of the thixotropic agent in the mass of the third solvent is 0.1%-5%; the percentage of the casting control agent in the mass of the third solvent is 0.1%-10%.
According to the manufacturing method of the atomizing core according to claim 23, the raw materials for forming the second slurry include a second powder and an auxiliary agent, and the second powder accounts for the amount of the second powder and the auxiliary agent. The percentage of the total mass is 55%-80%, and the second powder includes infrared ceramic powder, a second sintering aid and a second pore-forming agent; the second sintering aid accounts for The percentage is 2% to 40%, and the percentage of the second pore forming agent to the mass of the second powder is 5% to 80%; the auxiliary agent includes a skeleton forming agent, a second surfactant, a second A plasticizer and a second binder, the skeleton forming agent accounts for 50% to 90% of the mass of the auxiliary agent; the second surfactant accounts for 1% to 10% of the mass of the auxiliary agent ; The percentage of the second plasticizer in the mass of the auxiliary agent is 1% to 20%; the percentage of the second binder in the mass of the second powder is 10% to 40%.