Atomization assembly and preparation method and application thereof

Abstract

The present application provides an atomization assembly, which includes a first oil-conducting body, a second oil-conducting body and a heating body. The first oil-conducting body and the second oil-conducting body are both porous ceramic bodies. The first oil-conducting body is located at the liquid suction end of the atomization assembly, and the heating body is located at the atomization end of the atomization assembly; the second oil-conducting body has a concave structure on one side of the surface close to the first oil-conducting body, and part or all of the first oil-conducting body is embedded in the concave structure of the second oil-conducting body. The atomization assembly has high structural strength and moderate oil-conducting rate, which is conducive to achieving a good atomization effect. The present application also provides a preparation method and application of the atomization assembly, which is simple to operate and can effectively improve the production yield of the atomization assembly.

Description

Technical Field

[0001] The present application relates to the technical field of electronic atomization devices, and in particular to an atomization component and a preparation method and application thereof. Background Art

[0002] The atomizer assembly is an important part of the electronic atomizer device, mainly including the atomizer core and the heating element. The atomizer core is connected to the oil storage chamber for storing the atomizer liquid, and can transfer the atomizer liquid to the heating element. The atomizer liquid is heated by the heating element to achieve atomization. However, the comprehensive performance of the existing atomizer core is still poor, with defects such as low oil conduction speed, poor structural strength, and short service life. In addition, due to the complex structure of the atomizer core, it is not conducive to stable assembly, which reduces the production yield of the atomizer core. Summary of the invention

[0003] In view of this, the present application provides an atomizer assembly, which uses a porous ceramic body as an oil guide passage to connect the oil storage chamber of the oil storage assembly, thereby improving the structural strength of the atomizer assembly, and the atomizer assembly also has a high oil guide speed, which is conducive to achieving a good atomization effect. The present application also provides a method for preparing the atomizer assembly, which is simple to operate and can effectively improve the production yield of the atomizer assembly.

[0004] In a first aspect, the present application provides an atomization assembly, the atomization assembly comprising a first oil-conducting body, a second oil-conducting body and a heating body, the first oil-conducting body and the second oil-conducting body are both porous ceramic bodies, the first oil-conducting body is located at the liquid suction end of the atomization assembly, and the heating body is located at the atomization end of the atomization assembly;

[0005] A surface of the second oil-conducting body on one side close to the first oil-conducting body has a concave structure, and part or all of the first oil-conducting body is embedded in the concave structure of the second oil-conducting body.

[0006] In the present application, the first oil guide body is arranged in the connection passage between the atomizing assembly and the oil storage assembly, and the first oil guide body can conduct the atomized liquid in the oil storage chamber to the second oil guide body, and the atomized liquid in the second oil guide body can be atomized after being heated by the heating body. The first oil guide body and the second oil guide body are both porous ceramic bodies, thereby ensuring that the atomizing assembly has a high structural strength while having a good oil conduction speed; the concave structure is arranged on the surface of the second oil guide body close to the first oil guide body to increase the contact area between the first oil guide body and the second oil guide body, thereby improving the oil conduction speed of the atomizing assembly.

[0007] Optionally, the first oil-conducting body is partially embedded in the second oil-conducting body, and the first oil-conducting body includes an embedded portion embedded in the recessed structure of the second oil-conducting body, the embedded portion cooperates with the recessed structure, and the embedded portion completely fills the recessed structure.

[0008] Optionally, the first oil-conducting body is entirely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body completely fills the recessed structure.

[0009] Optionally, the first oil-conducting body is entirely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body partially fills the recessed structure.

[0010] Optionally, the oil conducting speed of the first oil conducting body is greater than the oil conducting speed of the second oil conducting body.

[0011] Optionally, the recessed structure is single or multiple.

[0012] Optionally, when there is a single recessed structure, the recessed structure is located in the middle of the second oil guiding body.

[0013] Optionally, the cross-sectional area of ​​the recessed structure is less than or equal to 20 mm².

[0014] Optionally, the average pore size of the first oil-conducting body is greater than or equal to the average pore size of the second oil-conducting body.

[0015] Optionally, the average pore size of the first oil-conducting body is greater than or equal to the average pore size of the second oil-conducting body.

[0016] Optionally, in the first oil-conducting body, the number of holes with a pore size greater than 20 μm and less than or equal to 100 μm accounts for 90% or more.

[0017] Optionally, in the second oil-conducting body, the number of holes with a pore size greater than 10 μm and less than or equal to 30 μm accounts for 90% or more.

[0018] Optionally, the porosity of the first oil-conducting body is greater than or equal to the porosity of the second oil-conducting body.

[0019] Optionally, the porosity of the first oil-conducting body is 40%-80%.

[0020] Optionally, the porosity of the second oil conducting body is 20%-60%.

[0021] Optionally, the porosity of the first oil-conducting body is greater than or equal to the porosity of the second oil-conducting body, and the average pore size of the first oil-conducting body is greater than or equal to the average pore size of the second oil-conducting body. When the pore size and porosity of the first oil-conducting body and the second oil-conducting body have the above relationship, the first oil-conducting body can not only have a good oil storage effect, but also have a faster oil conducting speed, thereby improving the replenishment efficiency of the atomized liquid during the atomization process and achieving a good atomization effect.

[0022] Optionally, the thermal conductivity of the first oil conducting body is 0.2 W / (m·K)-0.8 W / (m·K).

[0023] Optionally, the thermal conductivity of the second oil conducting body is 0.4 W / (m·K)-1 W / (m·K).

[0024] Optionally, the maximum dimension of the first oil-conducting body along the thickness direction is 0.5 mm-3 mm.

[0025] Optionally, the maximum dimension of the second oil-conducting body along the thickness direction is 0.5 mm-3 mm.

[0026] Optionally, the ratio of the maximum dimension of the second oil-conducting body along the thickness direction to the maximum dimension of the first oil-conducting body along the thickness direction is 1:(0.8-1.5).

[0027] Optionally, in the second oil-conducting body, the depth of the recessed structure is 0.5 mm-2 mm.

[0028] Optionally, the oil guide speed of the atomization assembly is 1 mg / s-3 mg / s.

[0029] Optionally, the crushing strength of the atomization assembly is 10Mpa-20Mpa.

[0030] Optionally, the heating body includes any one of a heating coil and a heating net.

[0031] The atomizer assembly provided in the first aspect of the present application adopts a solid oil guide passage to improve the structural strength of the atomizer assembly, and the atomizer assembly has a higher oil guide speed by setting the structure and aperture of the first oil guide body and the second oil guide body, thereby achieving a good atomization effect. The atomizer assembly has a simple structure and is easy to assemble, which is conducive to improving the qualified rate of product production.

[0032] In a second aspect, the present application provides a method for preparing an atomizer assembly, comprising the following steps:

[0033] The first pore former, the first ceramic powder, the first lubricant, the first dispersant and the first plasticizer are mixed and kneaded to obtain a first feedstock;

[0034] The second pore former, the second ceramic powder, the second lubricant, the second dispersant and the second plasticizer are mixed and kneaded to obtain a second feed;

[0035] The first feed material and the second feed material are prepared by a two-color injection molding process to obtain a ceramic body;

[0036] The ceramic blank is subjected to a first sintering to obtain the first oil-conducting body and the second oil-conducting body; a heating circuit is arranged on the surface of the second oil-conducting body to obtain the atomization assembly; the first oil-conducting body is located at the liquid suction end of the atomization assembly, and the heating circuit of the heater is located at the atomization end of the atomization assembly; a surface of the second oil-conducting body on one side close to the first oil-conducting body has a recessed structure, and part or all of the first oil-conducting body is embedded in the recessed structure of the second oil-conducting body.

[0037] Optionally, the step of arranging the heating circuit on the surface of the second oil-conducting body includes: screen-printing a conductive paste on the surface of the second oil-conducting body, and obtaining the heating body through a second sintering.

[0038] Optionally, the first oil-conducting body is entirely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body partially fills the recessed structure.

[0039] Optionally, the first oil-conducting body is entirely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body completely fills the recessed structure.

[0040] Optionally, the first oil-conducting body is partially embedded in the second oil-conducting body, and the first oil-conducting body includes an embedded portion embedded in the recessed structure of the second oil-conducting body, the embedded portion cooperates with the recessed structure, and the embedded portion completely fills the recessed structure.

[0041] Optionally, the average particle size of the first pore-forming agent is 30 μm-50 μm.

[0042] Optionally, the average particle size of the second pore-forming agent is 10 μm-30 μm.

[0043] Optionally, the first feed includes the following raw materials in percentage by weight: 20%-40% of the first pore-forming agent, 25%-35% of the first ceramic powder, 25%-50% of the first lubricant, 2%-10% of the first dispersant and 5%-10% of the first plasticizer.

[0044] Optionally, the second feed includes the following raw materials in percentage by weight: 10%-30% of the second pore-forming agent, 30%-40% of the second ceramic powder, 10%-30% of the second lubricant, 2%-10% of the second dispersant and 5%-10% of the second plasticizer.

[0045] Optionally, the first pore-forming agent includes one or more of wood fiber, bamboo fiber, cotton cloth, sawdust, rice husk and sucrose.

[0046] Optionally, the second pore-forming agent includes one or more of carbon powder and starch.

[0047] Optionally, the first ceramic powder includes one or more of aluminum oxide, silicon dioxide, zirconium oxide, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate.

[0048] Optionally, the second ceramic powder includes one or more of aluminum oxide, silicon dioxide, zirconium oxide, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate.

[0049] Optionally, the first lubricant includes one or more of paraffin wax, white wax, ozokerite wax, palm wax, mineral wax, Fischer-Tropsch wax, and beeswax.

[0050] Optionally, the second lubricant includes one or more of paraffin wax, white wax, ozokerite wax, palm wax, mineral wax, Fischer-Tropsch wax, and beeswax.

[0051] Optionally, the first dispersant includes one or more of a fatty acid dispersant and an acrylic resin dispersant. Further, the first dispersant includes stearic acid.

[0052] Optionally, the second dispersant includes one or more of a fatty acid dispersant and an acrylic resin dispersant. Further, the second dispersant includes stearic acid.

[0053] Optionally, both the first dispersant and the second dispersant include stearic acid.

[0054] Optionally, the first plasticizer includes one or more of dioctyl phthalate and dibutyl phthalate.

[0055] Optionally, the second plasticizer includes one or more of dioctyl phthalate and dibutyl phthalate.

[0056] Optionally, the banburying temperature is 120°C-180°C.

[0057] Optionally, the mixing time is 1h-5h.

[0058] Optionally, the two-color injection molding process includes: closing the first mold and the second mold, using the second feed material to obtain the second oil-conducting body through the first injection molding; closing the second oil-conducting body with the third mold, and using the first feed material to obtain the first oil-conducting body through the second injection molding.

[0059] Optionally, the first injection molding includes: injecting at a pressure of 1000kgf / mm²-1500kgf / mm², an injection time of 0.1s-2s, and maintaining pressure for 3s-20s at a pressure of 500kgf / mm²-1500kgf / mm².

[0060] Optionally, the mold temperature of the first injection molding is 150°C-300°C.

[0061] Optionally, the second injection molding includes: injecting at a pressure of 800kgf / mm²-1500kgf / mm², an injection time of 0.1s-2s, and maintaining pressure for 3s-20s at a pressure of 500kgf / mm²-1500kgf / mm².

[0062] Optionally, the mold temperature of the second injection molding is 150°C-300°C.

[0063] Optionally, the sintering temperature of the first sintering is 1000° C.-1500° C., and the sintering time of the first sintering is 0.5 h-3 h.

[0064] The second aspect of the present application provides a method for preparing an atomizing assembly, the method comprising: mixing a first pore-forming agent, a first ceramic powder, a first lubricant, a first dispersant and a first plasticizer, and kneading the mixture to obtain a first feed;

[0065] The second pore former, the second ceramic powder, the second lubricant, the second dispersant and the second plasticizer are mixed and kneaded to obtain a second feed;

[0066] The first feed material and the second feed material are prepared by a two-color injection molding process to obtain a ceramic body;

[0067] The ceramic body is subjected to a first sintering to obtain the first oil-conducting body and the second oil-conducting body; a heating circuit is screen-printed on the surface of the second oil-conducting body, and the atomizing assembly is obtained after a second sintering; the first oil-conducting body is located at the liquid suction end of the atomizing assembly, and the heating circuit of the heater is located at the atomizing end of the atomizing assembly; the second oil-conducting body has a concave structure on one side of the surface close to the first oil-conducting body, and part or all of the first oil-conducting body is embedded in the concave structure of the second oil-conducting body. The preparation method of the atomizing assembly described in the present application has a simple and controllable process, is easy to operate, is conducive to realizing automated production, and the obtained atomizing assembly has a good pore size distribution, high structural precision, and a high product yield.

[0068] The third aspect of the present application provides an atomization assembly prepared by the above method.

[0069] The fourth aspect of the present application provides an atomizer, which includes an oil storage component and the atomizing component of the first aspect and the third aspect of the present application, wherein the oil storage component includes an oil storage cavity, and the oil storage cavity is in direct contact with the liquid suction end of the atomizing component.

[0070] In the atomizer provided in the fourth aspect of the present application, the oil storage assembly and the atomizing assembly are directly connected through the first oil guiding body of the atomizing assembly, and the oil guiding passage with a solid structure improves the structural strength of the atomizer, thereby extending the service life of the atomizer; the atomizing assembly also has a relatively high oil guiding speed, which can ensure that the atomizer has a good atomization effect.

[0071] The fifth aspect of the present application provides an electronic atomization device, which includes a power supply assembly and the atomizer of the fourth aspect of the present application. The power supply assembly is electrically connected to the atomizer and is used to supply power to the atomizer.

[0072] The electronic atomization device provided in the fifth aspect of the present application has good structural strength and a long service life due to the use of the atomizer of the present application, and has a good atomization effect and a good user experience.

[0073] A sixth aspect of the present application provides an electronic cigarette, comprising the electronic atomizer described in the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 A schematic cross-sectional view of an atomizer assembly provided in one embodiment of the present application;

[0075] Figure 2 A schematic cross-sectional view of an atomizer assembly provided in another embodiment of the present application;

[0076] Figure 3 A schematic cross-sectional view of an atomizer assembly provided in another embodiment of the present application;

[0077] Figure 4 A schematic diagram of the cross-sectional thickness of an atomizer assembly provided in one embodiment of the present application;

[0078] Figure 5 A flow chart of the preparation process of an atomizer assembly provided in one embodiment of the present application;

[0079] Figure 6 A cross-sectional schematic diagram of an atomizer assembly provided in Example 3 of the present application;

[0080] Figure 7 A schematic cross-sectional view of an atomizer assembly provided in Example 4 of the present application;

[0081] Figure 8 A schematic cross-sectional view of an atomizer assembly provided in Comparative Example 1 of the present application;

[0082] Fig. 9 This is a cross-sectional schematic diagram of the atomization assembly provided for Comparative Example 2 of the present application. DETAILED DESCRIPTION

[0083] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0084] The existing atomizer assembly is connected to the liquid storage chamber of the oil storage assembly by setting a groove structure on the surface of the atomizer core to achieve the conduction of the atomized liquid. However, setting a groove structure on the surface of the atomizer core will reduce the structural strength of the atomizer assembly and shorten its service life; secondly, the groove structure is not conducive to the infiltration of the atomized liquid, causing the atomized liquid to be unevenly distributed in the atomizer assembly; thirdly, during the firing process, since the ceramic sintering needs to be buried with burying powder, the burying powder is easy to enter the groove structure of the atomizer assembly, affecting the normal use of the atomizer assembly. In order to improve the structural strength and oil conduction speed of the atomizer assembly and improve the qualified rate of the atomizer assembly production, the embodiment of the present application provides an atomizer assembly, which not only solves the problem of reducing the structural strength of the atomizer core due to the setting of the groove structure, but also greatly reduces the oil leakage of the atomizer core, and has a good atomization effect.

[0085] The present application provides an atomization assembly 100, which includes a first oil-conducting body 10, a second oil-conducting body 20 and a heating body 30. The first oil-conducting body 10 and the second oil-conducting body 20 are both porous ceramic bodies. The first oil-conducting body 10 is located at the liquid suction end of the atomization assembly 100, and the heating body 30 is located at the atomization end of the atomization assembly. According to a specific embodiment of the present application, a surface of the second oil-conducting body on one side close to the first oil-conducting body has a recessed structure, and part or all of the first oil-conducting body is embedded in the recessed structure of the second oil-conducting body.

[0086] In some embodiments of the present application, the first oil-conducting body is partially embedded in the second oil-conducting body, and the first oil-conducting body includes an embedded portion embedded in the recessed structure of the second oil-conducting body, the embedded portion cooperates with the recessed structure, and the embedded portion completely fills the recessed structure, such as Figure 1 , Figure 4 and Figure 6 shown.

[0087] In some embodiments of the present application, the first oil-conducting body is completely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body completely fills the recessed structure, such as Figure 2 and Figure 7 shown.

[0088] In some embodiments of the present application, the first oil-conducting body is completely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body partially fills the recessed structure, such as Figure 3 shown.

[0089] The present application is further explained using specific embodiments as follows.

[0090] See also Figure 1 , Figure 1 A schematic cross-sectional view of an atomizer assembly provided for an embodiment of the present application. Among them, the atomizer assembly 100 includes a first oil-conducting body 10, a second oil-conducting body 20 and a heating body 30 arranged in sequence, and a side surface a of the first oil-conducting body away from the second oil-conducting body is the liquid suction end of the atomizer assembly, and a side surface b of the second oil-conducting body close to the heating body is the atomizing end of the atomizer assembly. In the present application, the liquid suction end of the atomizer assembly is in contact with the atomized liquid, and the atomized liquid can be sucked into the first oil-conducting body. The atomizing end of the atomizer assembly is in contact with the heating body, and the heating body can heat and atomize the atomized liquid in the second oil-conducting body. In the embodiment of the present application, the side surface of the second oil-conducting body close to the first oil-conducting body has a concave structure, and part or all of the first oil-conducting body is embedded in the concave structure of the second oil-conducting body. Arranging a concave structure on the side surface of the second oil-conducting body close to the first oil-conducting body can increase the contact area between the first oil-conducting body and the second oil-conducting body, thereby increasing the oil conduction speed of the atomizer assembly. In the embodiment of the present application, the side surface of the first oil-conducting body away from the second oil-conducting body is a planar structure. When the surface a is a planar structure, the atomization assembly can have a higher structural strength.

[0091] In some embodiments of the present application, the first oil-conducting body is partially embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body includes an embedded portion and a non-embedded portion, the embedded portion of the first oil-conducting body completely fills the recessed structure of the second oil-conducting body, the embedded portion of the first oil-conducting body cooperates with the recessed structure of the second oil-conducting body, and the non-embedded portion of the first oil-conducting body is stacked on the surface of the second oil-conducting body, please refer to Figure 1 , Figure 1 A cross-sectional schematic diagram of an atomizer assembly provided in one embodiment of the present application, wherein a first oil-conducting body 10 is partially embedded in a recessed structure of a second oil-conducting body 20, the embedded portion of the first oil-conducting body 10 completely fills the recessed structure of the second oil-conducting body 20, and the non-embedded portion of the first oil-conducting body 10 is stacked on the surface of the second oil-conducting body 20.

[0092] In some embodiments of the present application, the first oil-conducting body is completely embedded in the concave structure of the second oil-conducting body, and the first oil-conducting body cooperates with the concave structure, and the first oil-conducting body completely fills the concave structure. Figure 2 , Figure 2 It is a cross-sectional schematic diagram of an atomizer assembly provided in an embodiment of the present application, wherein the first oil-conducting body 10 is entirely embedded in the recessed structure of the second oil-conducting body 20 , and the first oil-conducting body 10 completely fills the recessed structure of the second oil-conducting body 20 .

[0093] In some embodiments of the present application, the first oil-conducting body is completely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body partially fills the recessed structure. Figure 3 , Figure 3 It is a cross-sectional schematic diagram of an atomizer assembly provided in an embodiment of the present application, wherein the first oil-conducting body 10 is completely embedded in the recessed structure of the second oil-conducting body 20 , and the first oil-conducting body 10 partially fills the recessed structure of the second oil-conducting body 20 .

[0094] In the embodiments of the present application, the concave structure of the second oil-conducting body can be one or more. When the second oil-conducting body has multiple concave structures on one side surface close to the first oil-conducting body, correspondingly, when the first oil-conducting body is completely embedded in the concave structure of the second oil-conducting body, the present application includes multiple first oil-conducting bodies to fill the multiple concave structures on the surface of the second oil-conducting body; when the first oil-conducting body is partially embedded in the concave structure of the second oil-conducting body, the first oil-conducting body is provided with multiple embedded parts on one side surface close to the second oil-conducting body to match the concave structure of the second oil-conducting body. By providing the concave structure on the side surface of the second oil-conducting body close to the first oil-conducting body, on the one hand, it is beneficial to increase the oil storage capacity of the first oil-conducting body, and on the other hand, it is beneficial to increase the contact area between the first oil-conducting body and the second oil-conducting body, thereby improving the oil conduction speed. In some embodiments of the present application, when the number of the concave structures of the second oil-conducting body is one and the first oil-conducting body is partially embedded in the concave structure of the second oil-conducting body, the concave structure of the second oil-conducting body is arranged in the middle of the second oil-conducting body, and the embedded part of the first oil-conducting body is arranged in the middle of the first oil-conducting body. Setting the recessed structure in the middle of the second oil-conducting body can effectively shorten the transmission path of the atomized liquid, thereby promoting the transmission of the atomized liquid and enabling the atomizing assembly to have a faster oil-conducting speed; the atomized liquid can be evenly distributed in the atomizing assembly to achieve a good atomization effect. In some embodiments of the present application, when the first oil-conducting body is partially embedded in the recessed structure of the second oil-conducting body, the cross-sectional area of ​​the embedded portion of the first oil-conducting body embedded in the recessed structure of the second oil-conducting body gradually decreases in the direction from the liquid suction end to the atomizing end of the atomizing assembly. The above design can concentrate the atomized liquid of the first oil-conducting body in the embedded portion, which can increase the transmission pressure of the atomized liquid and improve the transmission rate of the atomized liquid. In some embodiments of the present application, the cross-sectional area of ​​the recessed structure of the second oil-conducting body is less than or equal to 20 mm².

[0095] In the implementation manner of the present application, the first oil-conducting body and the second oil-conducting body are both porous ceramic bodies. The porous structure of the porous ceramic can well infiltrate the atomized liquid and promote the transmission of the atomized liquid, and the porous ceramic has good structural strength, which can ensure that the oil-conducting body has both high oil-conducting efficiency and structural strength. In the implementation manner of the present application, the oil-conducting speed of the first oil-conducting body is greater than the oil-conducting speed of the second oil-conducting body. In the present application, the oil-conducting speed of the oil-conducting body is tested by the following method: the oil-conducting body is placed on a precise electronic balance, the e-liquid is dripped onto the surface of the oil-conducting body and timing is performed, and the timing is stopped when all the oil droplets have penetrated into the oil-conducting body, and the oil-conducting speed is calculated based on the weight / time of the e-liquid. When the oil guiding speed of the first oil guiding body is greater than that of the second oil guiding body, since the first oil guiding body is partially or completely embedded in the recessed structure of the second oil guiding body and the first oil guiding body has a greater oil guiding speed than the second oil guiding body, on the one hand, compared with the existing atomization core, it has a better liquid storage function and can effectively reduce oil leakage; on the other hand, the first oil guiding body can play a role in preliminarily diverting the atomized liquid, thereby optimizing the atomization effect.

[0096] In some embodiments of the present application, the average pore size of the first oil-conducting body is greater than or equal to the average pore size of the second oil-conducting body. As long as the oil conducting speed of the first oil-conducting body is greater than the oil conducting speed of the second oil-conducting body, that is, when the average pore size of the first oil-conducting body is equal to the average pore size of the second oil-conducting body, the porosity of the first oil-conducting body can be made greater than the porosity of the second oil-conducting body, so as to achieve that the oil conducting speed of the first oil-conducting body is greater than the oil conducting speed of the second oil-conducting body.

[0097] In some embodiments of the present application, the porosity of the first oil-conducting body is greater than or equal to the porosity of the second oil-conducting body. As long as the oil-conducting speed of the first oil-conducting body is greater than the oil-conducting speed of the second oil-conducting body, that is, when the porosity of the first oil-conducting body is equal to the porosity of the second oil-conducting body, the average pore size of the first oil-conducting body can be greater than the average pore size of the second oil-conducting body, so as to achieve that the oil-conducting speed of the first oil-conducting body is greater than the oil-conducting speed of the second oil-conducting body. In some embodiments of the present application, the average pore size of the first oil-conducting body is greater than the average pore size of the second oil-conducting body, and the porosity of the first oil-conducting body is greater than the porosity of the second oil-conducting body. Since the first oil-conducting body is located at the liquid suction end of the atomizing assembly, in order to ensure that the atomized liquid can be quickly conducted to the atomizing end of the atomizing assembly, the first oil-conducting body should have larger and more oil-conducting channels to achieve the transmission of the atomized liquid; and when the average pore size and porosity of the first oil-conducting body are greater than those of the second oil-conducting body, the first oil-conducting body can also play the role of oil storage, thereby effectively replenishing the atomized liquid in the second oil-conducting body, and ensuring that the atomizing assembly has a uniform and stable oil-conducting speed.

[0098] In an embodiment of the present application, the pore size of the first oil-conducting body is 10 μm-500 μm. The pore size of the first oil-conducting body is specifically but not limited to 10 μm, 20 μm, 30 μm, 80 μm, 100 μm, 150 μm, 200 μm, 300 μm or 500 μm. In an embodiment of the present application, in the first oil-conducting body, the number of holes with a pore size of 20 μm-100 μm accounts for 90% or more. In some embodiments of the present application, in the first oil-conducting body, the number of holes with a pore size of 50 μm-100 μm accounts for 80% or more. In an embodiment of the present application, the porosity of the first oil-conducting body is 40%-80%. The porosity of the first oil-conducting body is specifically but not limited to 40%, 50%, 60%, 70% or 80%. When the pore size and porosity of the first oil-conducting body are within the above ranges, the first oil-conducting body can have a larger oil storage capacity and can quickly transfer the atomized liquid to the second oil-conducting body, ensuring that the atomized liquid has a higher transfer rate.

[0099] In an embodiment of the present application, the pore size of the second oil-conducting body is 5 μm-50 μm. The pore size of the second oil-conducting body is specifically but not limited to 5 μm, 10 μm, 20 μm, 25 μm, 30 μm, 40 μm or 50 μm. In an embodiment of the present application, in the second oil-conducting body, the number of holes with a pore size of 10 μm-30 μm accounts for 90% or more. In an embodiment of the present application, the porosity of the second oil-conducting body is 20%-60%. The porosity of the second oil-conducting body is specifically but not limited to 20%, 40%, 50% or 60%. When the pore size and porosity of the second oil-conducting body are within the above range, the second oil-conducting body can convert the atomized liquid into fine droplets, which is conducive to achieving a good atomization effect.

[0100] In the embodiment of the present application, the thermal conductivity of the first oil-conducting body is less than the thermal conductivity of the second oil-conducting body. In the embodiment of the present application, the thermal conductivity of the first oil-conducting body is 0.2W / (m·K)-0.8W / (m·K). The thermal conductivity of the first oil-conducting body may be, but is not limited to, 0.2W / (m·K), 0.5W / (m·K) or 0.8W / (m·K). In the embodiment of the present application, the thermal conductivity of the second oil-conducting body is 0.4W / (m·K)-1W / (m·K). The thermal conductivity of the second oil-conducting body may be, but is not limited to, 0.4W / (m·K), 0.7W / (m·K) or 1W / (m·K). The smaller thermal conductivity of the first oil-conducting body is conducive to concentrating the heat of the heating body in the second oil-conducting body, thereby improving the heating efficiency and achieving a good atomization effect.

[0101] In this application, the maximum dimension of the first oil-conducting body along the thickness direction refers to the maximum distance from the surface of the first oil-conducting body away from the second oil-conducting body to the surface of the second oil-conducting body. The maximum dimension of the second oil-conducting body along the thickness direction refers to the maximum distance from the contact surface of the second oil-conducting body and the first oil-conducting body to the heating body, and the concave depth of the second oil-conducting body refers to the maximum difference in the distance from the contact surface of the second oil-conducting body and the first oil-conducting body to the heating body. Figure 4 , Figure 4 A schematic diagram of the cross-sectional thickness of an atomization assembly provided for an embodiment of the present application, wherein D1 represents the maximum dimension of the first oil-conducting body along the thickness direction, D2 represents the maximum dimension of the second oil-conducting body along the thickness direction, and D3 represents the depression depth of the second oil-conducting body. In the implementation mode of the present application, the maximum dimension of the first oil-conducting body along the thickness direction is 0.5 mm-3 mm. The maximum dimension of the first oil-conducting body along the thickness direction is specifically but not limited to 0.5 mm, 1 mm, 2 mm or 3 mm. In the implementation mode of the present application, the maximum dimension of the second oil-conducting body along the thickness direction is 0.5 mm-3 mm. The maximum dimension of the second oil-conducting body along the thickness direction is specifically but not limited to 0.5 mm, 1 mm, 2 mm or 3 mm. When the maximum dimensions of the first oil-conducting body and the second oil-conducting body along the thickness direction are set in the above range, the atomized liquid can have better conduction and atomization effects.

[0102] In an embodiment of the present application, the ratio of the maximum dimension of the second oil-conducting body along the thickness direction to the maximum dimension of the first oil-conducting body along the thickness direction is 1:(0.8-2). In some embodiments of the present application, the ratio of the maximum dimension of the second oil-conducting body along the thickness direction to the maximum dimension of the first oil-conducting body along the thickness direction is 1:(0.8-1.5). The ratio of the maximum dimension of the second oil-conducting body along the thickness direction to the maximum dimension of the first oil-conducting body along the thickness direction is specifically but not limited to 1:0.5, 1:0.8, 1:1, 1:1.2 or 1:1.5. Within the above-mentioned range of the ratio of the maximum dimension along the thickness direction, the atomizing assembly can have a higher oil conducting speed, and the atomized liquid can form fine droplets, which is conducive to achieving a good atomization effect. In an embodiment of the present application, in the second oil-conducting body, the depth of the recessed structure is 0.5mm-2mm. The depth of the recessed structure is specifically but not limited to 0.5mm, 1mm or 2mm. In some embodiments of the present application, since the average pore size or porosity of the second oil-conducting body is smaller than the average pore size or porosity of the first oil-conducting body, the oil-conducting speed of the second oil-conducting body is lower. When the recess depth is set within the above range, the transmission distance of the atomized liquid in the second oil-conducting body can be shortened, thereby shortening the transmission time of the atomized liquid.

[0103] In the embodiment of the present application, the oil conduction speed of the atomizer assembly is 1mg / s-3mg / s. The oil conduction speed of the atomizer assembly is the overall oil conduction speed of the atomizer assembly. The oil conduction speed of the atomizer assembly can be specifically but not limited to 1mg / s, 1.5mg / s, 2mg / s, 2.5mg / s or 3mg / s. In the embodiment of the present application, the crushing strength of the atomizer assembly is 10Mpa-20Mpa. The crushing strength of the atomizer assembly is specifically but not limited to 10Mpa, 13Mpa, 15Mpa, 17Mpa, 19Mpa or 20Mpa.

[0104] The atomizer assembly provided by the present application improves the structural strength of the atomizer assembly by adopting a solid oil guide passage, thereby avoiding the problem of poor structural strength caused by hollow structures such as oil guide pipes or oil guide grooves in existing atomizer assemblies. By setting the structure and aperture of the first oil guide body and the second oil guide body, the atomizer assembly has a higher oil guide speed and achieves a good atomization effect. The atomizer assembly has a simple structure and is easy to assemble, which is conducive to improving the qualified rate of product production.

[0105] This application also provides a method for preparing an atomizer assembly, please refer to Figure 5 , Figure 5 The present invention provides a flow chart of a process for preparing an atomizer assembly according to an embodiment of the present invention. The method for preparing an atomizer assembly includes the following steps:

[0106] Step 100: mixing a first pore-forming agent, a first ceramic powder, a first lubricant, a first dispersant and a first plasticizer, and kneading the mixture to obtain a first feed;

[0107] Step 200: mixing a second pore-forming agent, a second ceramic powder, a second lubricant, a second dispersant and a second plasticizer, and kneading the mixture to obtain a second feed;

[0108] Step 300: using a two-color injection molding process to prepare a ceramic body using a first feed material and a second feed material;

[0109] Step 400: performing a first sintering on the ceramic body to obtain a first oil-conducting body and a second oil-conducting body;

[0110] Step 500: Dispose a heating circuit on the surface of the second oil-conducting body to obtain an atomizing assembly.

[0111] In the atomization assembly of the present application, the first oil guide body is located at the liquid suction end of the atomization assembly, and the heating body is located at the atomization end of the atomization assembly; the second oil guide body has a concave structure on one side surface close to the first oil guide body, and part or all of the first oil guide body is embedded in the concave structure of the second oil guide body.

[0112] According to some embodiments of the present application, the step of disposing a heating circuit on the surface of the second oil-conducting body includes: screen-printing a conductive paste on the surface of the second oil-conducting body, and obtaining a heating body through a second sintering.

[0113] In the present application, step 100 is the preparation process of the first feed. In the embodiment of the present application, 20%-40% of the first pore-forming agent, 25%-35% of the first ceramic powder, 25%-50% of the first lubricant, 2%-10% of the first dispersant and 5%-10% of the first plasticizer. In the embodiment of the present application, the first pore-forming agent includes one or more of wood fiber, bamboo fiber, cotton cloth, sawdust, rice husk and sucrose. The above materials have a larger diameter, which is conducive to forming larger holes during the firing process. In the embodiment of the present application, the average particle size of the first pore-forming agent is 30μm-50μm. In some embodiments of the present application, the first pore-forming agent is composed of wood fiber and bamboo fiber, wherein the mass percentage of wood fiber is 30%-70%, and the mass percentage of bamboo fiber is 30%-70%. Bamboo fiber and wood fiber can effectively improve the porosity of ceramics when used as pore-forming agents, and it is easy to form holes with a pore size of 50μm-200μm during the ceramic firing process, and the distribution of the holes is relatively dispersed. In the embodiment of the present application, the mass percentage of the first pore-forming agent in the first feed is 20%-40%, and the mass percentage of the first pore-forming agent in the first feed can be but is not limited to 20%, 25%, 30% or 40%.

[0114] In an embodiment of the present application, the first ceramic powder includes one or more of aluminum oxide, silicon dioxide, zirconium oxide, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate. In some embodiments of the present application, the first ceramic powder is composed of aluminum oxide and silicon dioxide, wherein the mass percentage of aluminum oxide is 5%-15%, and the mass percentage of silicon dioxide is 85%-95%. Silicon dioxide, as a ceramic powder, is easy to produce a porous structure during sintering. Adding aluminum oxide can increase the strength and toughness of porous ceramics. The combination of aluminum oxide and silicon dioxide can also further increase the microporous structure of ceramics. In an embodiment of the present application, the particle size of the first ceramic powder is 0.5μm-20μm. The particle size of the first ceramic powder can be specifically but not limited to 0.5μm, 1μm, 3μm, 5μm, 10μm, 15μm or 20μm. In the embodiment of the present application, the mass percentage of the first ceramic powder in the first feed is 25%-35%, and the mass percentage of the first ceramic powder in the first feed can be but is not limited to 25%, 27%, 30% or 35%.

[0115] In an embodiment of the present application, the first lubricant includes one or more of paraffin wax, white wax, ozokerite, palm wax, mineral wax, Fischer-Tropsch wax and beeswax. Using the above substances as lubricants can effectively wet the surface of ceramic powder particles, reduce friction between particles, facilitate full mixing of various raw material components, and improve the uniformity of feeding. In an embodiment of the present application, the mass percentage of the first lubricant in the first feed is 25%-50%, and the mass percentage of the first lubricant in the first feed can be, but is not limited to, 25%, 30%, 40% or 50%.

[0116] In an embodiment of the present application, the first dispersant includes one or more of a fatty acid dispersant and an acrylic resin dispersant. Furthermore, the first dispersant includes stearic acid. Adding a dispersant can inhibit agglomeration of ceramic powder, so that each component is evenly dispersed in the feed, which is conducive to forming a uniformly distributed pore structure. In an embodiment of the present application, the mass percentage of the first dispersant in the first feed is 2%-10%, and the mass percentage of the first dispersant in the first feed can be, but is not limited to, 2%, 5%, 7% or 10%.

[0117] In the embodiment of the present application, the first plasticizer includes one or more of dioctyl phthalate and dibutyl phthalate. The above substances can promote ceramic molding, which is beneficial to the subsequent two-color injection molding process to form a ceramic body with a stable structure. In the embodiment of the present application, the mass percentage of the first plasticizer in the first feed is 5%-10%, and the mass percentage of the first plasticizer in the first feed can be, but is not limited to, 5%, 7% or 10%.

[0118] In the present application, step 200 is the preparation process of the second feed. In the embodiment of the present application, the second feed includes the following raw materials in percentage by weight: 10%-30% of the second pore former, 30%-40% of the second ceramic powder, 10%-30% of the second lubricant, 2%-10% of the second dispersant and 5%-10% of the second plasticizer. In the embodiment of the present application, the second pore former includes one or more of carbon powder and starch. The above materials are conducive to forming smaller holes during the firing process. In the embodiment of the present application, the average particle size of the second pore former is 10μm-30μm. In some embodiments of the present application, the second pore former is composed of carbon powder and starch, wherein the mass percentage of carbon powder is 60%-90%, and the mass percentage of starch is 10%-40%. When carbon powder and starch are used as pore formers at the same time, different pore sizes and pore shapes can be formed, so that the porous ceramic pores obtained are finer, which is conducive to refining the atomized liquid and achieving sufficient atomization. In the embodiment of the present application, the mass percentage of the second pore-forming agent in the second feed is 10%-30%, and the mass percentage of the second pore-forming agent in the second feed can be but is not limited to 10%, 15%, 20% or 30%.

[0119] In an embodiment of the present application, the second ceramic powder includes one or more of aluminum oxide, silicon dioxide, zirconium oxide, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate. In an embodiment of the present application, the particle size of the second ceramic powder is 0.5 μm-20 μm. In an embodiment of the present application, the mass percentage of the second ceramic powder in the second feed is 30%-40%, and the mass percentage of the second ceramic powder in the second feed can be, but is not limited to, 30%, 32%, 35% or 40%.

[0120] In the embodiment of the present application, the second lubricant includes one or more of paraffin wax, white wax, ozokerite, palm wax, mineral wax, Fischer-Tropsch wax and beeswax. In the embodiment of the present application, the mass percentage of the second lubricant in the second feed is 10%-30%, and the mass percentage of the second lubricant in the second feed can be, but is not limited to, 10%, 15%, 20% or 30%.

[0121] In the embodiment of the present application, the second dispersant includes one or more of a fatty acid dispersant and an acrylic resin dispersant. Further, the second dispersant includes stearic acid. In the embodiment of the present application, the mass percentage of the second dispersant in the second feed is 2%-10%, and the mass percentage of the second dispersant in the second feed can be, but is not limited to, 2%, 5%, 7% or 10%.

[0122] In the embodiment of the present application, the second plasticizer includes one or more of dioctyl phthalate and dibutyl phthalate. In the embodiment of the present application, the mass percentage of the second plasticizer in the second feed is 5%-10%, and the mass percentage of the second plasticizer in the second feed can be, but is not limited to, 5%, 7% or 10%.

[0123] In the embodiment of the present application, the banburying temperature of the first feed and the second feed is 120°C-180°C. The banburying temperature of the first feed and the second feed can be, but not limited to, 120°C, 150°C, 160°C, 170°C or 180°C. The banburying time of the first feed and the second feed is 1h-5h. The banburying time of the first feed and the second feed can be, but not limited to, 1h, 3h or 5h.

[0124] In step 300 of the present application, the first feed and the second feed are prepared by a two-color injection molding process to obtain a ceramic body, and the two-color injection molding process specifically includes: the first mold and the second mold are molded together, and the second feed is used to obtain the second oil-conducting body body through the first injection molding; after the mold is cooled, the first mold and the second mold are transferred away, the second oil-conducting body body and the third mold are molded together and the first feed is used for injection molding to form the first oil-conducting body body, and the second oil-conducting body body is integrated with the first oil-conducting body body. In the embodiment of the present application, the first injection molding is performed at a pressure of 1000kgf / mm²-1500kgf / mm², the injection time is 0.1s-2s, and the pressure is maintained at a pressure of 500kgf / mm²-1500kgf / mm² for 3s-20s. In the embodiment of the present application, the mold temperature of the first injection molding is 150℃-300℃. In the embodiment of the present application, the second injection molding is performed at a pressure of 800kgf / mm²-1500kgf / mm², the injection time is 0.1s-2s, and the pressure is maintained at a pressure of 500kgf / mm²-1500kgf / mm² for 3s-20s. In the embodiment of the present application, the mold temperature of the second injection molding is 150℃-300℃.

[0125] In step 400 of the present application, the ceramic body is subjected to a first sintering to obtain a first oil-conducting body and a second oil-conducting body, wherein the sintering temperature of the first sintering is 1000°C-1500°C, the sintering time of the first sintering is 0.5h-3h, and the sintering is carried out for 1h-4h. In the embodiment of the present application, the sintering temperature of the first sintering can be, but not limited to, 1000°C, 1200°C, 1300°C or 1500°C. The sintering time of the first sintering can be, but not limited to, 0.5h, 1h, 2h or 3h.

[0126] The preparation method of the atomizer assembly provided in the present application adopts a two-color injection molding process to obtain an integrated first oil guide body and a second oil guide body, which greatly improves the structural strength of the atomizer assembly. The method is simple and controllable, easy to operate, and is conducive to realizing automated production. The atomizer assembly obtained has a good pore size distribution, high structural precision, and a high product yield.

[0127] The present application also provides an atomization assembly, which is prepared by the above-mentioned preparation method of the atomization assembly.

[0128] The present application also provides an atomizer, which includes an oil storage component and the atomizing component in the present application, wherein the oil storage component includes an oil storage cavity, and the oil storage cavity is in direct contact with the liquid suction end of the atomizing component. In the present application, the first oil guide body of the atomizing component is directly connected to the oil storage cavity of the oil storage component, and the structural strength of the atomizer is effectively improved through the oil guide passage of the solid structure, and the atomizing component also has a high oil guide speed, which can ensure that the atomizer has a good atomization effect.

[0129] The present application also provides an electronic atomization device, which includes a power supply assembly and the atomizer of the present application, wherein the power supply assembly is electrically connected to the atomizer and is used to supply power to the atomizer. The electronic atomization device provided by the present application has good structural strength and a long service life, and has a good atomization effect and a good user experience.

[0130] The present application also provides an electronic cigarette, which includes the electronic atomization device mentioned above in the present application.

[0131] The implementation of the present application is further described below with reference to a number of embodiments.

[0132] Example 1

[0133] A method for preparing an atomizing component, comprising:

[0134] (1) Preparation of the first feed:

[0135] The pore former 1, ceramic powder 1, lubricant 1, dispersant 1 and plasticizer 1 are mixed and then kneaded to obtain the first feed, wherein the first feed includes the following raw materials in percentage by weight: 35wt% of pore former 1 (specifically 30wt% of wood fiber and 70wt% of bamboo fiber), 25wt% of ceramic powder 1 (specifically 15wt% of aluminum oxide and 85wt% of silicon dioxide), 30wt% of lubricant 1 (specifically paraffin), 5wt% of dispersant 1 (specifically stearic acid) and 5wt% of plasticizer 1 (specifically dioctyl phthalate). The average particle size of the pore former 1 is 40μm.

[0136] (2) Preparation of the second feed:

[0137] After mixing the pore former 2, ceramic powder 2, lubricant 2, dispersant 2 and plasticizer 2, the second feed is prepared by internal mixing, wherein the second feed comprises the following raw materials in percentage by weight: 20wt% of the pore former 2 (specifically 60wt% of carbon powder and 40wt% of starch), 40wt% of the ceramic powder 2 (specifically 15wt% of alumina and 85wt% of silicon dioxide), 30wt% of the lubricant 2 (specifically palm wax), 3wt% of the dispersant 2 (specifically stearic acid) and 7wt% of the plasticizer 2 (specifically dioctyl phthalate). The average particle size of the pore former 2 is 20μm.

[0138] (3) Preparation of ceramic body:

[0139] The first mold and the second mold are combined, and the porous matrix embryo body is obtained by injection molding using the second feed. The injection pressure is 1500kgf / mm², the injection time is 1s, the holding pressure is 1000kgf / mm², the holding time is 10s, and the mold temperature is 200℃.

[0140] After cooling, the porous matrix embryo body is molded with the third mold and the first feed is used for injection molding to inject the filling layer embryo body on the basis of the porous matrix embryo body, and the ceramic body is fused together. The injection pressure is 1200kgf / mm², the injection time is 1s. The holding pressure is 1000kgf / mm², the holding time is 10s, and the mold temperature is 200℃.

[0141] (4) The ceramic body is sintered at a sintering temperature of 1200° C. for 2 h to obtain a porous ceramic. A heating circuit is screen-printed on the surface of the porous ceramic. After sintering in an atmosphere furnace, an atomization component is obtained.

[0142] The cross-sectional schematic diagram of the atomizer assembly obtained in Example 1 can be found in Figure 1 The second oil-conducting body has a concave structure in the middle of the surface close to the first oil-conducting body, and the surface of the first oil-conducting body close to the second oil-conducting body has an embedded part that matches the concave structure of the second oil-conducting body. The maximum dimension D1 of the first oil-conducting body along the thickness direction is 4.5 mm, the maximum dimension D2 of the second oil-conducting body along the thickness direction is 3 mm, the concave depth D3 of the second oil-conducting body is 2 mm, and the ratio of the thickness of the second oil-conducting body to the first oil-conducting body is 1:1.5.

[0143] Example 2

[0144] A method for preparing an atomizing component, comprising:

[0145] (1) Preparation of the first feed:

[0146] The pore former 1, ceramic powder 1, lubricant 1, dispersant 1 and plasticizer 1 are mixed and then kneaded to obtain the first feed, wherein the first feed includes the following raw materials in percentage by weight: 30wt% of the pore former 1 (specifically 50wt% of carbon powder and 50wt% of starch), 27wt% of the ceramic powder 1 (specifically 10wt% of aluminum oxide and 90wt% of silicon dioxide), 35wt% of the lubricant 1 (specifically paraffin), 3wt% of the dispersant 1 (specifically stearic acid) and 5wt% of the plasticizer 1 (specifically dioctyl phthalate). The average particle size of the pore former 1 is 50μm.

[0147] (2) Preparation of the second feed:

[0148] The pore former 2, ceramic powder 2, lubricant 2, dispersant 2 and plasticizer 2 are mixed and then kneaded to obtain the first feed, wherein the first feed includes the following raw materials in percentage by weight: 20wt% of the pore former 2 (specifically 60wt% of carbon powder and 40wt% of starch), 35wt% of the ceramic powder 2 (specifically 15wt% of alumina and 85wt% of silicon dioxide), 25wt% of the lubricant 2 (specifically palm wax), 10wt% of the dispersant 2 (specifically stearic acid) and 10wt% of the plasticizer 2 (specifically dibutyl phthalate). The average particle size of the pore former 2 is 10μm.

[0149] (3) Preparation of ceramic body:

[0150] The first mold and the second mold are combined, and the porous matrix embryo body is obtained by injection molding using the second feed. The injection pressure is 1500kgf / mm², the injection time is 1s, the holding pressure is 1000kgf / mm², the holding time is 10s, and the mold temperature is 200℃.

[0151] After cooling, the porous matrix embryo body is molded with the third mold and the first feed is used for injection molding. The filling layer embryo body is injected on the porous matrix embryo body and fused together to obtain a ceramic embryo body. The injection pressure is 1200kgf / mm², the injection time is 1s. The holding pressure is 1000kgf / mm², the holding time is 10s, and the mold temperature is 200℃.

[0152] (4) The ceramic body is sintered at a sintering temperature of 1200° C. for 2 h to obtain a porous ceramic. A heating circuit is screen-printed on the surface of the porous ceramic. After sintering in an atmosphere furnace, an atomization component is obtained.

[0153] Example 2 uses the same mold as Example 1 for injection molding, and the structure of the resulting atomization component is the same as that of Example 1.

[0154] Example 3

[0155] The difference from Example 1 is that a different mold is used for injection molding in step (3) of Example 3, and in the atomizer assembly of Example 3, a surface of the second oil guide body close to the first oil guide body has a plurality of concave structures. Figure 6 , Figure 6A schematic cross-sectional view of an atomizer assembly provided in Example 3 of the present application, wherein a side surface c of the second oil-conducting body 20 close to the first oil-conducting body 10 has three concave structures, and a side surface of the first oil-conducting body 10 close to the second oil-conducting body 20 has three embedded parts matching the concave structures of the second oil-conducting body. In the atomizer assembly of Example 3, the maximum dimension D1 of the first oil-conducting body along the thickness direction is 4.5 mm, the maximum dimension D2 of the second oil-conducting body along the thickness direction is 3 mm, the concave depth D3 of the second oil-conducting body is 2 mm, and the ratio of the thickness of the second oil-conducting body to the first oil-conducting body is 1:1.5.

[0156] Example 4

[0157] The difference from Example 1 is that in step (3) of Example 4, a different mold is used for injection molding. In the atomizer assembly of Example 4, the first oil guide body is completely embedded in the recessed structure of the second oil guide body, and the first oil guide body completely fills the recessed structure. Figure 7 , Figure 7 This is a cross-sectional schematic diagram of an atomizer assembly provided in Example 4 of the present application, wherein the thickness of the first oil-conducting body 10 is equal to the recessed depth of the second oil-conducting body 20. In the atomizer assembly of Example 4, the maximum dimension D1 of the first oil-conducting body along the thickness direction is 4.5 mm, the maximum dimension D2 of the second oil-conducting body along the thickness direction is 3 mm, the recessed depth D3 of the second oil-conducting body is 3 mm, and the ratio of the thickness of the second oil-conducting body to the first oil-conducting body is 1:1.5.

[0158] Example 5

[0159] The difference from Example 1 is that a different mold is used for injection molding in step (3) of Example 5. The cross-sectional schematic diagram of the atomization assembly of Example 5 can be found in Figure 1 The difference between the atomizer assembly of Example 1 and that of Example 1 lies in the different thicknesses and recessed depths of the first oil guide body and the second oil guide body. Specifically, in the atomizer assembly of Example 5, the maximum dimension D1 of the first oil guide body along the thickness direction is 3 mm, the maximum dimension D2 of the second oil guide body along the thickness direction is 3 mm, the recessed depth D3 of the second oil guide body is 2 mm, and the ratio of the thickness of the second oil guide body to that of the first oil guide body is 1:1.

[0160] Example 6

[0161] The difference from Example 1 is that a different mold is used for injection molding in step (3) of Example 6. The cross-sectional schematic diagram of the atomization assembly of Example 6 can be found in Figure 1The difference between the atomizer assembly of Example 1 and that of Example 1 lies in the different thicknesses and recessed depths of the first oil guide body and the second oil guide body. Specifically, in the atomizer assembly of Example 5, the maximum dimension D1 of the first oil guide body along the thickness direction is 6 mm, the maximum dimension D2 of the second oil guide body along the thickness direction is 3 mm, the recessed depth D3 of the second oil guide body is 2 mm, and the thickness ratio of the second oil guide body to the first oil guide body is 1:2.

[0162] Comparative Example 1

[0163] A method for preparing an atomizing component, comprising:

[0164] (1) Preparation of feed:

[0165] The pore former, ceramic powder, lubricant, dispersant and plasticizer are mixed and then mixed to obtain a feed material, wherein the feed material includes the following raw materials in percentage by weight: 35wt% of pore former 1 (specifically 30wt% of wood fiber and 70wt% of bamboo fiber), 25wt% of ceramic powder (specifically 15wt% of aluminum oxide and 85wt% of silicon dioxide), 30wt% of lubricant (specifically paraffin), 5wt% of dispersant (specifically stearic acid) and 5wt% of plasticizer (specifically dioctyl phthalate). The average particle size of the pore former is 50μm.

[0166] (2) Preparation of ceramic body:

[0167] The feed material is directly injection molded by injection molding, and the size and shape of the product formed by the mold are the same as those in Example 1. The injection pressure is 1500kgf / cm2, the injection time is 1s, the holding pressure is 1000kgf / cm2, the holding time is 10s, and the mold temperature is 200°C.

[0168] (3) The ceramic body is sintered at a sintering temperature of 1200° C. for 2 h to obtain a porous ceramic. A heating circuit is screen-printed on the surface of the porous ceramic. After sintering in an atmosphere furnace, an atomization component is obtained.

[0169] The structural schematic diagram of the atomization assembly obtained in Comparative Example 1 is as follows Figure 8 As shown, Figure 8 This is a cross-sectional schematic diagram of an atomizer assembly provided in Comparative Example 1 of the present application, wherein the atomizer assembly includes a porous ceramic body 40 and a heating body 30. In the atomizer assembly of Comparative Example 1, the maximum dimension D1 of the porous ceramic body along the thickness direction is 5.5 mm.

[0170] Comparative Example 2

[0171] The difference from Example 1 is that in the atomizer assembly of Comparative Example 2, the second oil guide body does not have a recessed structure, and the first oil guide body does not have an embedded portion. Fig. 9 , Fig. 9The schematic diagram of the structure of the atomizer assembly provided for comparative example 2 of the present application, wherein the atomizer assembly includes a first oil guide body 10, a second oil guide body 20 and a heating body 30, and the contact surface of the first oil guide body 10 and the second oil guide body 20 is a planar structure. In the atomizer assembly of comparative example 2, the maximum dimension D1 of the first oil guide body along the thickness direction is 4.5 mm, the maximum dimension D2 of the second oil guide body along the thickness direction is 3 mm, and the ratio of the thickness of the second oil guide body to the first oil guide body is 1:1.5.

[0172] Comparative Example 3

[0173] Compared with the structure of the atomizer assembly of Example 1, the atomizer assembly of Comparative Example 3 only contains the second oil guide body and the heating body, that is, the position of the first oil guide body in the atomizer assembly of Example 1 is a hollow structure in the atomizer assembly of Comparative Example 3.

[0174] The preparation process of ceramic green body is as follows:

[0175] The second feed material of Example 1 was used for injection molding, and the first mold and the second mold were combined for injection molding to obtain a ceramic body. The injection pressure was 1500 kgf / mm², the injection time was 1 s, the holding pressure was 1000 kgf / mm², the holding time was 10 s, and the mold temperature was 200°C.

[0176] The ceramic body is sintered at a sintering temperature of 1200° C. for 2 hours to obtain a porous ceramic body. A heating circuit is screen-printed on the surface of the porous ceramic body, and an atomization component is obtained after sintering in an atmosphere furnace.

[0177] In the atomizing assembly of Comparative Example 3, the maximum dimension D1 of the porous ceramic body along the thickness direction is 4.5 mm.

[0178] Comparative Example 4

[0179] The difference from Comparative Example 2 is that a different mold is used for injection molding in step (3) of Comparative Example 4. The cross-sectional schematic diagram of the atomization assembly of Comparative Example 4 can be found in Figure 8 The difference between the atomizer assembly of comparative example 2 is that the thicknesses of the first oil guide body and the second oil guide body are different. Specifically, in the atomizer assembly of comparative example 4, the maximum dimension D1 of the first oil guide body along the thickness direction is 3 mm, the maximum dimension D2 of the second oil guide body along the thickness direction is 3 mm, and the ratio of the thickness of the second oil guide body to the first oil guide body is 1:1.

[0180] Effect Example

[0181] In order to verify the performance of the atomizer assembly prepared in the present application, the present application also provides an effect embodiment.

[0182] The mercury intrusion method is used to characterize the pore size distribution of the atomizer assembly. The specific test method includes: placing the atomizer assembly of Examples 1-6 and Comparative Examples 1-4 into the test chamber, opening the test equipment to pressurize the mercury into the sample pores, and obtaining the pore size data according to the change curve of mercury content and pressure. Please refer to Table 1 for the pore size data of the atomizer assembly of Examples 1-6 and Comparative Examples 1-4. The porosity of the atomizer assembly is measured using the porosity intelligent analysis system method of the porous ceramic atomizer core of an electronic cigarette. The specific test method includes: measuring the dry weight of the atomizer assembly of Examples 1-6 and Comparative Examples 1-4 on the measuring tray of the equipment, and then placing it in a vacuum equipment for vacuuming to allow water to enter the product. Then put the atomizer assembly into water to measure the water weight of the saturated sample, and then measure the empty weight of the saturated sample. The porosity results are obtained by system analysis. Please refer to Table 1 for the porosity of the atomizer assembly of Examples 1-6 and Comparative Examples 1-4. The oil conduction capacity test method of the electronic cigarette atomizer is used to measure the oil conduction speed of the atomizer assembly. The specific test method includes: placing the atomizer assembly of Examples 1-6 and Comparative Examples 1-4 on a precise electronic balance, using a needle to drip 1 drop of smoke oil on the porous ceramic atomizer and timing. When all the oil droplets penetrate into the sample, stop timing, and calculate the oil conduction speed according to the weight / time of the smoke oil. Please refer to Table 2 for the oil conduction speed of the atomizer assembly of Examples 1-6 and Comparative Examples 1-4. The crush strength of the atomizer assembly is measured using an extrusion test method. The specific test method includes: placing the atomizer assembly of Examples 1-6 and Comparative Examples 1-4 in a special fixture, and performing an extrusion test with a universal testing machine. When the product breaks, stop the test, and the maximum force obtained is the ratio of the force area to the crush strength. Please refer to Table 2 for the crush strength of the atomizer assembly of Examples 1-6 and Comparative Examples 1-4. Assemble the sample with the oil cup, support, electrode, etc., simulate normal suction of the sample for 30 times, and then check whether there is oil leakage around the sample. Please refer to Table 2 for the oil leakage of the atomizer assemblies of Examples 1-6 and Comparative Examples 1-4. Table 1 Structural parameters of the atomizer assemblies of Examples 1-6 and Comparative Examples 1-4

[0183]

[0184] Among them, the pore size distribution D of the first oil-conducting body 50μm-200μm It refers to the ratio of the number of holes with a pore size of 50μm-200μm to the total number of holes in the first oil-conducting body; the pore size distribution D of the second oil-conducting body 5μm-30μm It refers to the ratio of the number of holes with a pore size of 5μm-30μm to the total number of holes in the second oil-conducting body.

[0185] Table 2 Performance parameters of atomizer components of Examples 1-6 and Comparative Examples 1-4

[0186]

[0187] It can be learned from Tables 1 and 2 that: the atomizer assembly of Comparative Example 1 does not have a gradient pore size and porosity distribution, the oil guide speed of the atomizer assembly is too high, oil seepage occurs, and the crush strength of the atomizer assembly is also low; the contact surface of the first oil guide body and the second oil guide body of the atomizer assembly of Comparative Example 2 is a planar structure, and the oil guide speed of the atomizer assembly is low; the atomizer assembly of Comparative Example 3 has a hollow structure, the crush strength of the atomizer assembly is low, and the oil guide speed is too high, the atomizer assembly leaks, and the atomization effect is poor; in the atomizer assembly of Comparative Example 4, the thickness ratio of the second oil guide body to the first oil guide body is 1:1, and the oil guide rate is relatively higher than that of Comparative Example 2, and the atomization effect is improved, but compared with the atomizer assembly of Example 5, since the second oil guide body in the atomizer assembly of Comparative Example 4 does not have a recessed structure, the oil guide speed is still lower than the oil guide speed of the atomizer assembly of Example 5. The atomizer assembly provided in the embodiment of the present application has a moderate oil conduction rate and a high crush strength. The product has no oil leakage, can achieve a good atomization effect of the atomizer, and make the atomizer have a long service life.

[0188] To further demonstrate the beneficial effects of the present invention, the atomizer components of Examples 1-6 and Comparative Examples 1-4 were respectively assembled with the support and the oil cup and connected to the circuit (specifically, the power supply was connected through the two ends of the heating element). The resistance of the heating element was 1.5Ω, and the output voltage was controlled to be 4V. The inner cavity of the atomizer core was always filled with smoke oil, and the cycle was heated 300 times, each heating for 1s, and the interval time was 5s. The smoke concentration of the atomizer component was obtained by testing the electronic cigarette laser concentration meter, and the smoke concentration generated was judged by the laser intensity received by the receiving end of the electronic cigarette laser concentration meter. Please refer to Table 3 for the atomization effect of the atomizer components of Examples 1-6 and Comparative Examples 1-4.

[0189] Table 3 Atomization effect of the atomization assembly of Examples 1-6 and Comparative Examples 1-4

[0190]

[0191] It can be seen from Table 3 that the atomizer components of Comparative Examples 1-4 showed obvious carbon deposition within 200 cycles of heating, and the smoke concentration dropped significantly after 300 cycles of heating. However, the atomizer components provided in the embodiment of the present application did not show carbon deposition until more than 250 cycles of heating, and the smoke concentration was still above 60% after 300 cycles of heating. The above results show that the atomizer components provided in the present application have a relatively stable and excellent atomization effect, and are long-term applicable and not prone to carbon deposition.

[0192] The above is a preferred embodiment of the present application, but it should not be understood as limiting the scope of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. An atomizing assembly, characterized in that: The atomizing assembly comprises a first oil-conducting body, a second oil-conducting body and a heating body, wherein the first oil-conducting body and the second oil-conducting body are both porous ceramic bodies, the first oil-conducting body is located at the liquid suction end of the atomizing assembly, and the heating body is located at the atomizing end of the atomizing assembly; A surface of the second oil-conducting body close to the first oil-conducting body has a concave structure, and part or all of the first oil-conducting body is embedded in the concave structure of the second oil-conducting body; a surface of the first oil-conducting body away from the second oil-conducting body is a planar structure.

2. The atomizer assembly according to claim 1, characterized in that: The first oil-conducting body is partially embedded in the second oil-conducting body, and the first oil-conducting body includes an embedded portion embedded in the recessed structure of the second oil-conducting body, the embedded portion cooperates with the recessed structure, and the embedded portion completely fills the recessed structure.

3. The atomizer assembly according to claim 1, characterized in that: The first oil-conducting body is entirely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body completely fills the recessed structure.

4. The atomizer assembly according to claim 1, characterized in that: The first oil-conducting body is entirely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body partially fills the recessed structure.

5. The atomizer assembly according to any one of claims 1 to 4, characterized in that: The oil guiding speed of the first oil guiding body is greater than the oil guiding speed of the second oil guiding body.

6. The atomizer assembly according to any one of claims 1 to 4, characterized in that: The recessed structure is single or multiple.

7. The atomizing assembly according to claim 6, characterized in that: When there is a single recessed structure, the recessed structure is located in the middle of the second oil guiding body.

8. The atomizer assembly according to any one of claims 1 to 4, characterized in that: The cross-sectional area of ​​the recessed structure is less than or equal to 20 mm 2 .

9. The atomizer assembly according to claim 5, characterized in that: The average pore size of the first oil-conducting body is greater than or equal to the average pore size of the second oil-conducting body.

10. The atomizer assembly according to claim 9, characterized in that: In the first oil-conducting body, the number of holes with a pore size greater than 20 μm and less than or equal to 100 μm accounts for 90% or more.

11. The atomizer assembly according to claim 10, characterized in that: In the second oil-conducting body, the number of holes with a pore size greater than 10 μm and less than or equal to 30 μm accounts for 90% or more.

12. The atomizer assembly according to claim 5, characterized in that: The porosity of the first oil-conducting body is greater than or equal to the porosity of the second oil-conducting body.

13. The atomizer assembly according to claim 12, characterized in that: The porosity of the first oil-conducting body is 40%-80%.

14. The atomizer assembly according to claim 12, characterized in that: The porosity of the second oil-conducting body is 20%-60%.

15. The atomizer assembly according to claim 5, characterized in that: The thermal conductivity of the first oil-conducting body is 0.2 W / (m·K)-0.8 W / (m·K), and the thermal conductivity of the second oil-conducting body is 0.4 W / (m·K)-1 W / (m·K).

16. The atomizer assembly according to any one of claims 1 to 4, characterized in that: The maximum dimension of the first oil-conducting body along the thickness direction is 0.5 mm-3 mm; the maximum dimension of the second oil-conducting body along the thickness direction is 0.5 mm-3 mm.

17. The atomizer assembly according to any one of claims 1 to 4, characterized in that: The ratio of the maximum dimension of the second oil-conducting body along the thickness direction to the maximum dimension of the first oil-conducting body along the thickness direction is 1:(0.8-1.5).

18. The atomizer assembly according to any one of claims 1 to 4, characterized in that: In the second oil-conducting body, the depth of the recessed structure is 0.5 mm-2 mm.

19. The atomizer assembly according to claim 1, characterized in that: The oil conducting speed of the atomizing assembly is 1 mg / s-3 mg / s, and the crushing strength of the atomizing assembly is 10 MPa-20 MPa.

20. The atomizer assembly according to claim 1, wherein the heating body comprises any one of a heating coil and a heating net.

21. A method for preparing an atomizing assembly, characterized in that: The following steps are involved: The first pore former, the first ceramic powder, the first lubricant, the first dispersant and the first plasticizer are mixed and kneaded to obtain a first feedstock; The second pore former, the second ceramic powder, the second lubricant, the second dispersant and the second plasticizer are mixed and kneaded to obtain a second feed; The first feed material and the second feed material are prepared by a two-color injection molding process to obtain a ceramic body; The ceramic blank is subjected to a first sintering to obtain a first oil-conducting body and a second oil-conducting body; a heating circuit is arranged on the surface of the second oil-conducting body to obtain an atomization assembly containing a heating body; the first oil-conducting body is located at the liquid suction end of the atomization assembly, and the heating body is located at the atomization end of the atomization assembly; a surface of the second oil-conducting body on one side close to the first oil-conducting body has a concave structure, and part or all of the first oil-conducting body is embedded in the concave structure of the second oil-conducting body; a surface of the first oil-conducting body on one side away from the second oil-conducting body is a planar structure.

22. The preparation method according to claim 21, wherein the step of arranging the heating circuit on the surface of the second oil-conducting body comprises: The conductive paste is screen-printed on the surface of the second oil-conducting body, and the heating body is obtained through a second sintering.

23. The preparation method according to claim 21, characterized in that: The first oil-conducting body is entirely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body partially fills the recessed structure.

24. The preparation method according to claim 21, characterized in that: The first oil-conducting body is entirely embedded in the recessed structure of the second oil-conducting body, the first oil-conducting body cooperates with the recessed structure, and the first oil-conducting body completely fills the recessed structure.

25. The preparation method according to claim 21, characterized in that: The first oil-conducting body is partially embedded in the second oil-conducting body, and the first oil-conducting body includes an embedded portion embedded in the recessed structure of the second oil-conducting body, the embedded portion cooperates with the recessed structure, and the embedded portion completely fills the recessed structure.

26. The preparation method according to any one of claims 21 to 25, characterized in that: The average particle size of the first pore-forming agent is 30 μm-50 μm; the average particle size of the second pore-forming agent is 10 μm-30 μm.

27. The preparation method according to any one of claims 21 to 25, characterized in that: The first feed includes the following raw materials in percentage by mass: 20%-40% of the first pore-forming agent, 25%-35% of the first ceramic powder, 25%-50% of the first lubricant, 2%-10% of the first dispersant and 5%-10% of the first plasticizer; the second feed includes the following raw materials in percentage by mass: 10%-30% of the second pore-forming agent, 30%-40% of the second ceramic powder, 10%-30% of the second lubricant, 2%-10% of the second dispersant and 5%-10% of the second plasticizer.

28. The preparation method according to claim 27, characterized in that: The first pore-forming agent includes one or more of wood fiber, bamboo fiber, cotton cloth, sawdust, rice husk and sucrose; the second pore-forming agent includes one or more of carbon powder and starch.

29. The preparation method according to claim 27, characterized in that: The first ceramic powder includes one or more of aluminum oxide, silicon dioxide, zirconium oxide, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate; the second ceramic powder includes one or more of aluminum oxide, silicon dioxide, zirconium oxide, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate; the first lubricant includes one or more of paraffin wax, white wax, ozokerite, palm wax, mineral wax, Fischer-Tropsch wax, and beeswax; the second lubricant includes one or more of paraffin wax, white wax, ozokerite, palm wax, mineral wax, Fischer-Tropsch wax, and beeswax; the first dispersant includes one or more of fatty acid dispersants and acrylic resin dispersants; the second dispersant includes one or more of fatty acid dispersants and acrylic resin dispersants; the first plasticizer includes one or more of dioctyl phthalate and dibutyl phthalate; the second plasticizer includes one or more of dioctyl phthalate and dibutyl phthalate.

30. The preparation method according to claim 29, characterized in that: The first dispersant and the second dispersant both include stearic acid.

31. The preparation method according to claim 21, characterized in that The mixing temperature of the mixing is 120° C.-180° C., and the mixing time of the mixing is 1 h-5 h.

32. The preparation method according to any one of claims 21 to 25, characterized in that: The two-color injection molding process comprises: closing a first mold with a second mold, and using the second feed material to obtain a second oil-conducting body through a first injection molding; closing the second oil-conducting body with a third mold, and using the first feed material to obtain a first oil-conducting body through a second injection molding.

33. The preparation method according to claim 32, characterized in that: The first injection molding includes: 2 -1500kgf / mm 2 The injection pressure is 0.1s-2s, and the injection time is 500kgf / mm 2 -1500kgf / mm 2 The second injection molding includes: holding the pressure for 3s-20s at 800kgf / mm 2 -1500kgf / mm 2 The injection pressure is 0.1s-2s, and the injection time is 500kgf / mm 2 -1500kgf / mm 2 Maintain pressure for 3s-20s.

34. The preparation method according to claim 32, characterized in that: The mold temperature of the first injection molding is 150°C-300°C; the mold temperature of the second injection molding is 150°C-300°C.

35. The preparation method according to claim 21, characterized in that: The sintering temperature of the first sintering is 1000° C.-1500° C., and the sintering time of the first sintering is 0.5 h-3 h.

36. The preparation method according to any one of claims 21 to 25, characterized in that: The oil guiding speed of the first oil guiding body is greater than the oil guiding speed of the second oil guiding body.

37. The preparation method according to any one of claims 21 to 25, characterized in that: The recessed structure is single or multiple.

38. The preparation method according to claim 37, characterized in that When there is a single recessed structure, the recessed structure is located in the middle of the second oil guiding body.

39. The preparation method according to any one of claims 21 to 25, characterized in that: The cross-sectional area of ​​the recessed structure is less than or equal to 20 mm 2 .

40. The preparation method according to claim 36, characterized in that: The average pore size of the first oil-conducting body is greater than or equal to the average pore size of the second oil-conducting body.

41. The preparation method according to claim 40, characterized in that In the first oil-conducting body, the number of holes with a pore size greater than 20 μm and less than or equal to 100 μm accounts for 90% or more.

42. The preparation method according to claim 40, characterized in that In the second oil-conducting body, the number of holes with a pore size greater than 10 μm and less than or equal to 30 μm accounts for 90% or more.

43. The preparation method according to claim 36, characterized in that: The porosity of the first oil-conducting body is greater than or equal to the porosity of the second oil-conducting body.

44. The preparation method according to claim 43, characterized in that The porosity of the first oil-conducting body is 40%-80%.

45. The preparation method according to claim 43, characterized in that The porosity of the second oil-conducting body is 20%-60%.

46. ​​The preparation method according to any one of claims 21 to 25, characterized in that: The maximum dimension of the first oil-conducting body along the thickness direction is 0.5 mm-3 mm; the maximum dimension of the second oil-conducting body along the thickness direction is 0.5 mm-3 mm.

47. The preparation method according to any one of claims 21 to 25, characterized in that: The ratio of the maximum dimension of the second oil-conducting body along the thickness direction to the maximum dimension of the first oil-conducting body along the thickness direction is 1:(0.8-1.5).

48. The preparation method according to any one of claims 21 to 25, characterized in that: In the second oil-conducting body, the depth of the recessed structure is 0.5 mm-2 mm.

49. An atomizing assembly, characterized in that: The atomization assembly is prepared by the method described in any one of claims 21-48.

50. An atomizer, characterized in that: The atomizer comprises an oil storage assembly and an atomizing assembly according to any one of claims 1 to 20 or claim 49; the oil storage assembly comprises an oil storage cavity, and the oil storage cavity is in direct contact with the liquid suction end of the atomizing assembly.

51. An electronic atomization device, characterized in that: The electronic atomization device comprises a power supply assembly and the atomizer according to claim 50, wherein the power supply assembly is electrically connected to the atomizer and is used to supply power to the atomizer.

52. An electronic cigarette, characterized in that: The electronic cigarette includes the electronic atomization device according to claim 51.

Images