WO2022188455A1

WO2022188455A1 - Atomization assembly and preparation method therefor, and use thereof

Info

Publication number: WO2022188455A1
Application number: PCT/CN2021/130400
Authority: WO
Inventors: 黄永河; 江品颐; 林信平; 刘双任; 徐述荣
Original assignee: 比亚迪精密制造有限公司
Priority date: 2021-03-10
Filing date: 2021-11-12
Publication date: 2022-09-15
Also published as: CN115067562A

Abstract

An atomization assembly (100), comprising a porous ceramic body and a heating body (30) arranged on the surface of the porous ceramic body, wherein the porous ceramic body comprises a first e-liquid guide body (10) and a second e-liquid guide body (20); the end of the porous ceramic body on which the heating body (30) is arranged is an atomization end, and the end of the porous ceramic body that is away from the atomization end is a liquid suction end; the first e-liquid guide body (10) is located at the liquid suction end; and the surface of the side of the second e-liquid guide body (20) that is close to the first e-liquid guide body (10) is provided with a recess structure, and the first e-liquid guide body (10) is partially or fully embedded in the recess structure of the second e-liquid guide body (20).

Description

Atomization component and its preparation method and application

This disclosure claims the priority of the Chinese patent application with the application number 202110266695.8 and the application title "Atomization Component and its Preparation Method and Application", which was filed with the China Patent Office on March 10, 2021, the entire contents of which are incorporated herein by reference Public.

technical field

The present application relates to the technical field of electronic atomization devices, and in particular, to an atomization assembly and a preparation method and application thereof.

Background technique

The atomization assembly is an important part of the electronic atomization device, mainly including the atomization core and the heating body. Atomization is achieved after being heated by the heating element. However, the comprehensive performance of the existing atomizing cores is still poor, and there are defects of low oil guiding speed, poor structural strength, and short service life, and due to the complex structure of the atomizing cores, it is not conducive to the realization of stable assembly and reduces the fogging effect. Core production yield.

SUMMARY OF THE INVENTION

In view of this, the present application provides an atomization assembly, the atomization assembly uses a porous ceramic body as an oil guide passage to connect the oil storage cavity of the oil storage assembly, so as to improve the structural strength of the atomization assembly, and the atomization assembly also has Higher oil guiding speed is conducive to achieving good atomization effect. The present application also provides a method for preparing an atomizing component, which is simple to operate and can effectively improve the production yield of the atomizing component.

A first aspect of the present application provides an atomization assembly, the atomization assembly includes a porous ceramic body and a heating body disposed on the surface of the porous ceramic body, the porous ceramic body includes a first oil-conducting body and a second oil-conducting body , the end of the porous ceramic body where the heating body is arranged is the atomization end, and the end of the porous ceramic body away from the atomization end is the suction end;

the first oil guiding body is located at the liquid suction end;

A side surface of the second oil guide body close to the first oil guide body has a concave structure, and part or all of the first oil guide body is embedded in the concave structure of the second oil guide body.

In the present application, the first oil guide body is arranged in the connection passage between the atomization 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 second oil guide body Atomization can be realized after the atomizing liquid in the heating body is heated. Both the first oil guide body and the second oil guide body are porous ceramic bodies, so as to ensure that the atomization assembly has a good oil guide speed and high structural strength; when the second oil guide body is close to the first oil guide body The concave structure provided on the surface of one side can increase the contact area between the first oil guiding body and the second oil guiding body, thereby increasing the oil guiding speed of the atomizing assembly.

Optionally, the first oil guide body is partially embedded in the second oil guide body, the first oil guide body includes an embedded portion embedded in the concave structure of the second oil guide body, and the embedded portion In cooperation with the recessed structure, the embedded portion completely fills the recessed structure.

Optionally, the first oil guide body is fully embedded in the concave structure of the second oil guide body, the first oil guide body is matched with the concave structure, and the first oil guide body completely fills the concave structure. recessed structure.

Optionally, the first oil guide body is fully embedded in the concave structure of the second oil guide body, the first oil guide body is matched with the concave structure, and the first oil guide body partially fills the recessed structure.

Optionally, the oil guiding speed of the first oil guiding body is greater than the oil guiding speed of the second oil guiding body.

Optionally, the concave structure is single or multiple.

Optionally, the concave structure is single, and the concave structure is located in the middle of the second oil guide body.

Optionally, the cross-sectional area of the recessed structure is less than or equal to 20 mm ² .

Optionally, the average pore size of the first oil guide body is greater than or equal to the average pore size of the second oil guide body.

Optionally, the average pore diameter of the first oil guide body is greater than or equal to the average pore diameter of the second oil guide body.

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

Optionally, in the second oil-conducting body, the number of pores with a diameter greater than 10 μm and less than or equal to 30 μm accounts for 90% or more.

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

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

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

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 diameter of the first oil-conducting body is greater than or equal to the average pore diameter of the second oil-conducting body. When the pore size and porosity of the first oil guide body and the second oil guide body have the above relationship, the first oil guide body can not only have a good oil storage effect, but also have a faster oil guide speed, thereby improving atomization The replenishment efficiency of the atomizing liquid in the process achieves a good atomization effect.

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

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

Optionally, the maximum size of the first oil guide body along the thickness direction is 0.5mm-3mm, and the maximum size of the first oil guide body along the thickness direction refers to the side of the first oil guide body away from the second oil guide body. The maximum distance from the surface of the second oil guide body to the surface of the second oil guide body.

Optionally, the maximum size of the second oil guide body along the thickness direction is 0.5mm-3mm, and the maximum size of the second oil guide body along the thickness direction refers to the contact surface between the second oil guide body and the first oil guide body. The maximum distance to the heating body.

Wherein, the thickness direction is the extending direction from the liquid absorbing end to the atomizing end of the porous ceramic body.

Optionally, the ratio of the largest dimension of the second oil guide body along the thickness direction to the largest dimension of the first oil guide body along the thickness direction is 1:(0.8-1.5).

Optionally, in the second oil guide body, the depth of the recessed structure is 0.5mm-2mm.

Optionally, the oil guiding speed of the atomization assembly is 1 mg/s-3 mg/s.

Optionally, the crushing strength of the atomizing component is 10Mpa-20Mpa.

Optionally, the heating body includes any one of a heating coil or a heating mesh.

The atomization assembly provided in the first aspect of the present application adopts a solid structure oil guide passage to improve the structural strength of the atomization assembly. High oil guiding speed to achieve good atomization effect. The atomizing component has a simple structure and is easy to assemble, which is beneficial to improve the qualified rate of product production.

In a second aspect, the application provides a method for preparing an atomizing assembly, comprising the following steps:

Mixing the first pore-forming agent, the first ceramic powder, the first lubricant, the first dispersant and the first plasticizer, and obtaining the first feeding material after banburying;

Mixing the second pore-forming agent, the second ceramic powder, the second lubricant, the second dispersant and the second plasticizer, and obtaining the second feeding material after banburying;

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

The ceramic green body is first sintered to obtain a porous ceramic body including a first oil-conducting body and a second oil-conducting body; a heating circuit is arranged on the surface of the porous ceramic body to obtain the atomization component, and the porous ceramic body is The end of the body on which the heating body is arranged is the atomization end, and the end of the porous ceramic body away from the atomization end is the liquid suction end; the first oil guide body is located at the liquid suction end; the second oil guide body is located at the liquid suction end; A side surface of the 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.

Optionally, the step of disposing the heating circuit on the surface of the second oil-conducting body includes: silk-screening conductive paste on the surface of the second oil-conducting body, and obtaining the heating body through second sintering.

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

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

Optionally, the first feeding material includes the following raw materials by mass percentage: 20%-40% of the first pore-forming agent, 25%-35% of the first ceramic powder, 25%- 50% of the first lubricant, 2% to 10% of the first dispersant, and 5% to 10% of the first plasticizer.

Optionally, the second feeding material includes the following raw materials by mass percentage: 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.

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

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

Optionally, the first ceramic powder includes one or more of alumina, silica, zirconia, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate.

Optionally, the second ceramic powder includes one or more of alumina, silica, zirconia, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate.

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

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

Optionally, the first dispersant includes one or more of a fatty acid-based dispersant and an acrylic resin-based dispersant. Further, the first dispersing agent includes stearic acid.

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

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

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

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

Optionally, the banburying temperature of the banburying is 120°C-180°C.

Optionally, the banburying time of the banburying is 1h-5h.

Optionally, the two-color injection molding process includes: clamping the mold 1 and the mold 2, and using the second feed to obtain a second oil guide body through the first injection molding; combining the second oil guide body with the mold 3; The first oil-conducting body is obtained by the second injection molding using the first feeding material.

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

Optionally, the temperature of the first injection mold is 150°C-300°C.

Optionally, the second injection molding includes: performing injection at a pressure of 800kgf/mm ² -1500kgf/mm ² , injection time being 0.1s-2s, and maintaining the pressure for 3s under a pressure of 500kgf/mm ² -1500kgf/mm ² -20s.

Optionally, the temperature of the mold for the second injection is 150°C-300°C.

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

The second aspect of the present application provides a method for preparing an atomizing component, the method comprising: mixing a first pore-forming agent, a first ceramic powder, a first lubricant, a first dispersant and a first plasticizer, Get the first feed after refining;

The ceramic body is first sintered to obtain a porous ceramic body including a first oil-conducting body and a second oil-conducting body; a heating circuit is silk-screened on the surface of the porous ceramic body, and the atomization assembly is obtained after the second sintering , the end of the porous ceramic body where the heating body is arranged is the atomization end, and the end of the porous ceramic body away from the atomization end is the liquid suction end; the first oil guide body is located at the liquid suction end; A side surface of the second oil guide body close to the first oil guide body has a concave structure, and part or all of the first oil guide body is embedded in the concave structure of the second oil guide body. The preparation method of the atomizing assembly described in the present application has simple and controllable process, easy operation, is conducive to realizing automatic production, and the obtained atomizing assembly has good pore size distribution, high structural precision, and high product yield.

A third aspect of the present application provides an atomizing assembly prepared by the above method.

A fourth aspect of the present application provides an atomizer, the atomizer includes an oil storage assembly and the atomization assembly of the first and third aspects of the present application, the oil storage assembly includes an oil storage cavity, the oil storage The cavity is in direct contact with the suction end of the atomizing assembly.

In the atomizer provided by the fourth aspect of the present application, the oil storage assembly and the atomization assembly are directly connected through the first oil guide body of the atomization assembly, and the solid structure oil guide passage improves the structural strength of the atomizer, thereby prolonging the The service life of the atomizer; the atomization component also has a high oil guiding speed, which can ensure that the atomizer has a good atomization effect.

A fifth aspect of the present application provides an electronic atomizer device, the electronic atomizer device includes a power supply assembly and the atomizer of the fourth aspect of the present application, the power supply assembly and the atomizer are electrically connected, and are used to supply power to the atomizer.

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

A sixth aspect of the present application provides an electronic cigarette, including the electronic atomizer described in the present application.

Description of drawings

1 is a schematic cross-sectional view of an atomizing assembly provided by an embodiment of the application;

2 is a schematic cross-sectional view of an atomizing assembly provided by another embodiment of the present application;

3 is a schematic cross-sectional view of an atomizing assembly provided by another embodiment of the present application;

4 is a schematic diagram of a cross-sectional thickness of an atomizing assembly provided by an embodiment of the application;

FIG. 5 is a flow chart of the preparation process of the atomization assembly provided by an embodiment of the application;

6 is a schematic cross-sectional view of the atomizing assembly provided in Example 3 of the present application;

7 is a schematic cross-sectional view of the atomizing assembly provided in Example 4 of the present application;

8 is a schematic cross-sectional view of the atomizing assembly provided by Comparative Example 1 of the present application;

FIG. 9 is a schematic cross-sectional view of the atomizing assembly provided in Comparative Example 2 of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The existing atomizing assembly is connected with the liquid storage cavity of the oil storage assembly by arranging a groove structure on the surface of the atomizing core to realize the conduction of the atomized liquid. However, setting the groove structure on the surface of the atomizing core will, on the one hand, reduce the structural strength of the atomizing component and shorten its service life; on the other hand, the groove structure is not conducive to the infiltration of the atomizing liquid, so that the distribution of the atomizing liquid in the atomizing component is not good. The third is that during the firing process, because the ceramic sintering needs to be buried with buried sintered powder, the buried sintered powder is easy to enter the groove structure of the atomizing component, which affects the normal use of the atomizing component. In order to improve the structural strength and oil guiding speed of the atomizing assembly, and improve the production pass rate of the atomizing assembly, the embodiment of the present application provides an atomizing assembly, which not only solves the problem that the atomizing core is caused by the setting of the groove structure. At the same time, it also reduces the oil leakage of the atomizing core, and has a good atomization effect.

The present application provides an atomization assembly 100 . The atomization assembly 100 includes a porous ceramic body and a heating body 30 disposed on the surface of the porous ceramic body. The porous ceramic body includes a first oil guide body 10 and a second oil guide body 20 , the end of the porous ceramic body with the heating body 30 is the atomization end, and the end of the porous ceramic body away from the atomization end is the suction end; the first oil guide body 10 is located at the suction end a side surface of the second oil guide body close to the first oil guide body has a concave structure, and part or all of the first oil guide body is embedded in the concave structure of the second oil guide body.

In some embodiments of the present application, the first oil guide body is partially embedded in the second oil guide body, the first oil guide body includes an embedded portion embedded in a concave structure of the second oil guide body, the embedded portion is matched with the concave structure, and the embedded portion Completely fill the recessed structures as shown in Figure 1, Figure 4 and Figure 6.

In some embodiments of the present application, the first oil guide body is fully embedded in the concave structure of the second oil guide body, the first oil guide body is matched with the concave structure, and the first oil guide body completely fills the concave structure, as shown in FIG. 2 and FIG. 7 is shown.

In some embodiments of the present application, the first oil guide body is fully embedded in the concave structure of the second oil guide body, the first oil guide body is matched with the concave structure, and the first oil guide body partially fills the concave structure, as shown in FIG. 3 . .

The present application will be further explained and illustrated by using specific embodiments as follows.

Please refer to FIG. 1 . FIG. 1 is a schematic cross-sectional view of an atomizing assembly according to an embodiment of the present application. The atomizing assembly 100 includes a first oil guiding body 10, a second oil guiding body 20 and a heating body 30 arranged in sequence, and the surface a of the first oil guiding body away from the second oil guiding body is the suction of the atomizing assembly. The liquid end, the surface b of the second oil guide body close to the heating body is the atomization end of the atomization assembly. In the present application, the liquid suction end of the atomizing component is in contact with the atomizing liquid, and the atomizing liquid can be sucked into the first oil guiding body, and the atomizing end of the atomizing component is in contact with the heating body, and the heating body can guide the second oil guiding body The atomizing liquid in the body is heated and atomized. In the embodiment of the present application, a side surface of the second oil guide body close to the first oil guide body has a concave structure, and part or all of the first oil guide body is embedded in the concave structure of the second oil guide body. Providing a concave structure on a surface of the second oil guide body close to the first oil guide body can increase the contact area between the first oil guide body and the second oil guide body, thereby improving the oil guide speed of the atomizing assembly. In the embodiment of the present application, a surface of the first oil guide body away from the second oil guide body is a plane structure. When the surface a is a plane structure, the atomizing assembly can have higher structural strength.

In some embodiments of the present application, the first oil guide body is partially embedded in the concave structure of the second oil guide body, the first oil guide body includes an embedded part and a non-embedded part, and the embedded part of the first oil guide body is completely filled with the second oil guide body The recessed structure of the first oil guide body is matched with the recessed structure of the second oil guide body, and the non-embedded part of the first oil guide body is stacked on the surface of the second oil guide body, please refer to FIG. 1, 1 is a schematic cross-sectional view of an atomization assembly provided by an embodiment of the application, wherein the first oil guide body 10 is partially embedded in the concave structure of the second oil guide body 20, and the embedded part of the first oil guide body 10 is completely filled with the second oil guide body 10. In the concave structure of the oil guide body 20 , the non-embedded portion of the first oil guide body 10 is stacked on the surface of the second oil guide body 20 .

In some embodiments of the present application, the first oil guide body is fully embedded in the concave structure of the second oil guide body, the first oil guide body cooperates with the concave structure, and the first oil guide body completely fills the concave structure. Please refer to FIG. 2. FIG. 2 is a schematic cross-sectional view of an atomization assembly provided by an embodiment of the application, wherein the first oil guide body 10 is fully embedded in the recessed structure of the second oil guide body 20, and the first oil guide body 10 is completely filled with the first oil guide body 10. The concave structure of the second oil guide body 20 .

In some embodiments of the present application, the first oil guide body is completely embedded in the concave structure of the second oil guide body, the first oil guide body is matched with the concave structure, and the first oil guide body partially fills the concave structure. Please refer to FIG. 3 . FIG. 3 is a schematic cross-sectional view of an atomizing assembly provided by an embodiment of the application, wherein the first oil guide body 10 is fully embedded in the concave structure of the second oil guide body 20 , and the first oil guide body 10 is partially filled with the first oil guide body 10 . The concave structure of the second oil guide body 20 .

In the embodiment of the present application, the number of concave structures of the second oil guide body may be one or multiple. When all the first oil guide bodies are embedded in the concave structures of the second oil guide bodies, the present application includes a plurality of first oil guide bodies to fill the plurality of concave structures on the surface of the second oil guide bodies; when the first oil guide bodies are partially embedded in the first oil guide bodies In the case of the concave structure of the second oil guide body, a plurality of embedded parts matched with the concave structure of the second oil guide body are provided on the side surface of the first oil guide body close to the second oil guide body. By arranging a concave structure on the surface of the second oil guide body close to the first oil guide body, on the one hand, it is beneficial to increase the oil storage capacity of the first oil guide body, and on the other hand, it is beneficial to increase the relationship between the first oil guide body and the first oil guide body. The contact area of the two oil guide bodies, thereby increasing the oil guide speed. In some embodiments of the present application, when the number of concave structures of the second oil guide body is one and the first oil guide body is partially embedded in the concave structure of the second oil guide body, the concave structure of the second oil guide body is arranged in the first oil guide body. In the middle part of the second oil guide body, the embedded part of the first oil guide body is arranged in the middle part of the first oil guide body. The concave structure is arranged in the middle of the second oil guide body, which can effectively shorten the transmission path of the atomized liquid, thereby promoting the transmission of the atomized liquid, so that the atomization component has a faster oil guiding speed; It is evenly distributed in the atomizing components to achieve a good atomization effect. In some embodiments of the present application, when the first oil guide body is partially embedded in the concave structure of the second oil guide body, the first oil guide body is embedded in the second oil guide body in the direction from the liquid suction end to the atomization end of the atomization assembly The cross-sectional area of the embedded part of the body concave structure part is gradually reduced. The above design can make the atomized liquid of the first oil guide body concentrate in the embedded part, 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 concave structure of the second oil guide body is less than or equal to 20 mm ² .

In the embodiment of the present application, both the first oil-conducting body and the second oil-conducting body are 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 high oil-conducting efficiency and structural strength at the same time. In the embodiment of the present application, the oil guiding speed of the first oil guiding body is greater than the oil guiding speed of the second oil guiding body. In this application, the oil guiding speed of the oil guiding body is tested by the following method: placing the oil guiding body on a precise electronic balance, dripping e-liquid on the surface of the oil guiding body and timing, when all the oil droplets penetrate into the oil guiding body Stop the timing at the time, and calculate the oil guiding speed according to the weight/time of the e-liquid. When the oil guiding speed of the first oil guiding body is greater than the oil guiding speed of the second oil guiding body, because the first oil guiding body is partially or completely embedded in the concave structure of the second oil guiding body, and the first oil guiding body is relatively The second oil guide body has a larger oil guide speed. On the one hand, it has a better liquid storage function than the existing atomizing core, which can effectively reduce oil leakage; on the other hand, the first oil guide body can It plays the role of preliminary shunting of the atomized liquid, so as to optimize the atomization effect.

In some embodiments of the present application, the average pore diameter of the first oil guide body is greater than or equal to the average pore diameter of the second oil guide body, as long as the oil guide speed of the first oil guide body is greater than the oil guide speed of the second oil guide body, that is, When the average pore diameter of the first oil guide body is equal to the average pore diameter of the second oil guide body, the porosity of the first oil guide body can be made larger than that of the second oil guide body, so as to realize the oil guide of the first oil guide body The speed is greater than the oil guiding speed of the second oil guiding body.

In some embodiments of the present application, the porosity of the first oil guide body is greater than or equal to the porosity of the second oil guide body, as long as the oil guide speed of the first oil guide body is greater than the oil guide speed of the second oil guide 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 made larger than that of the second oil-conducting body, so as to realize the porosity of the first oil-conducting body. The oil velocity is greater than the oil guiding velocity of the second oil guiding body. In some embodiments of the present application, the average pore diameter of the first oil-conducting body is larger than the average pore diameter of the second oil-conducting body, and the porosity of the first oil-conducting body is larger than the porosity of the second oil-conducting body. Since the first oil guide body is located at the suction end of the atomization assembly, in order to ensure that the atomized liquid can be quickly conducted to the atomization end of the atomization assembly, the first oil guide body should have larger and more oil guide channels to achieve The transmission of the atomized liquid; and when the average pore size and porosity of the first oil-conducting body are larger than those of the second oil-conducting body, the first oil-conducting body can also play the function of storing oil, thereby effectively supplementing the second oil-conducting body. The atomizing liquid in the oil body ensures that the atomizing component has a uniform and stable oil guiding speed.

In the embodiment of the present application, the pore diameter of the first oil guide 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 the embodiment of the present application, in the first oil-conducting body, the number of pores with a pore diameter of 20 μm-100 μm accounts for 90% or more. In some embodiments of the present application, in the first oil guide body, the number of pores with a diameter of 50 μm-100 μm accounts for 80% or more. In the 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-mentioned ranges, the first oil-conducting body can have a larger oil storage capacity and can quickly transmit the atomized liquid to the second oil-conducting body, ensuring that the atomized liquid has a relatively high capacity. high transfer rate.

In the embodiment of the present application, the pore diameter of the second oil guide 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 the embodiment of the present application, in the second oil-conducting body, the number of pores with a diameter of 10 μm-30 μm accounts for 90% or more. In the 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 diameter and porosity of the second oil-conducting body are within the above-mentioned ranges, the second oil-conducting body can convert the atomized liquid into fine droplets, which is beneficial to achieve a good atomization effect.

In the embodiment of the present application, the thermal conductivity of the first oil-conducting body is smaller than the thermal conductivity of the second oil-conducting body. In the embodiment of the present application, the thermal conductivity of the first oil guide body is 0.2W/(m·K)-0.8W/(m·K). The thermal conductivity of the first oil-conducting body may specifically be, but 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 guide body is 0.4W/(m·K)-1W/(m·K). The thermal conductivity of the second oil-conducting body may specifically be, but 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.

In this application, the largest dimension of the first oil guide body in the thickness direction refers to the maximum distance from the surface of the first oil guide body on the side away from the second oil guide body to the surface of the second oil guide body. The maximum dimension of the second oil guide body along the thickness direction refers to the maximum distance from the contact surface of the second oil guide body and the first oil guide body to the heating body, and the recessed depth of the second oil guide body refers to the second oil guide body The maximum difference in the distance from the contact surface of the first oil guide body to the heating body. Please refer to FIG. 4. FIG. 4 is a schematic diagram of the cross-sectional thickness of the atomizing assembly provided by an embodiment of the application, wherein D1 represents the maximum dimension of the first oil guide body along the thickness direction, and D2 represents the thickness direction of the second oil guide body. The largest dimension, D3, represents the depression depth of the second oil guide body. In the embodiment of the present application, the maximum dimension of the first oil guide body in the thickness direction is 0.5mm-3mm. Specifically, but not limited to, the maximum dimension of the first oil guide body along the thickness direction is 0.5 mm, 1 mm, 2 mm or 3 mm. In the embodiment of the present application, the largest dimension of the second oil guide body in the thickness direction is 0.5 mm to 3 mm. Specifically, but not limited to, the maximum dimension of the second oil guide body in the thickness direction is 0.5 mm, 1 mm, 2 mm or 3 mm. When the maximum size of the first oil guide body and the second oil guide body along the thickness direction is set in the above range, the atomizing liquid can have better conduction and atomization effects.

In the embodiment of the present application, the ratio of the largest dimension of the second oil guide body in the thickness direction to the largest dimension of the first oil guide body in the thickness direction is 1:(0.8-2). In some embodiments of the present application, the ratio of the largest dimension of the second oil guide body in the thickness direction to the largest dimension of the first oil guide body in the thickness direction is 1:(0.8-1.5). The ratio of the largest dimension of the second oil guide body in the thickness direction to the largest dimension of the first oil guide body in the thickness direction is specifically but not limited to 1:0.5, 1:0.8, 1:1, 1:1.2 or 1:1.5. In the above-mentioned range of the maximum size ratio along the thickness direction, the atomizing component can have a high oil guiding speed, and the atomizing liquid can form fine droplets, which is beneficial to achieve a good atomizing effect. In the embodiment of the present application, in the second oil guide body, the depth of the concave structure is 0.5 mm-2 mm. The depth of the recessed structure is specifically, but not limited to, 0.5 mm, 1 mm or 2 mm. In some embodiments of the present application, since the average pore diameter or porosity of the second oil-conducting body is smaller than the average pore diameter or porosity of the first oil-conducting body, the oil-conducting velocity of the second oil-conducting body is lower, reducing the depth of the depression When set in the above range, the transmission distance of the atomized liquid in the second oil guide body can be shortened, thereby shortening the transmission time of the atomized liquid.

In the present application, the thickness direction is the extending direction from the liquid absorbing end to the atomizing end of the porous ceramic body.

In the embodiment of the present application, the oil guiding speed of the atomizing assembly is 1 mg/s-3 mg/s. The oil guiding speed of the atomizing assembly is the overall oil guiding speed of the atomizing assembly. Specifically, the oil guiding speed of the atomizing assembly may be, but not limited to, 1 mg/s, 1.5 mg/s, 2 mg/s, 2.5 mg/s or 3 mg/s. In the embodiment of the present application, the crushing strength of the atomizing component is 10Mpa-20Mpa. The crushing strength of the atomizing component is specifically but not limited to 10Mpa, 13Mpa, 15Mpa, 17Mpa, 19Mpa or 20Mpa.

The atomization assembly provided by the present application improves the structural strength of the atomization assembly by adopting a solid structure oil guide passage, and avoids the problem of poor structural strength caused by hollow structures such as oil guide pipes or oil guide grooves in the existing atomization assemblies. By setting the structures and apertures of the first oil-guiding body and the second oil-guiding body, the atomizing assembly has a high oil guiding speed, and a good atomization effect is achieved. The atomizing component has a simple structure and is easy to assemble, which is beneficial to improve the qualified rate of product production.

The application also provides a method for preparing an atomizing assembly, please refer to FIG. 5 , which is a flow chart of the preparation process of the atomizing assembly provided by an embodiment of the application, and the preparation method of the atomizing assembly includes the following steps:

Step 100: Mix the first pore-forming agent, the first ceramic powder, the first lubricant, the first dispersant and the first plasticizer, and obtain the first feeding material after banburying;

Step 200: Mix the second pore-forming agent, the second ceramic powder, the second lubricant, the second dispersant and the second plasticizer, and obtain the second feed after banburying;

Step 300: preparing a ceramic body by using a two-color injection molding process with the first feeding material and the second feeding material;

Step 400 : performing first sintering on the ceramic body to obtain a porous ceramic body including a first oil-conducting body and a second oil-conducting body;

Step 500: Arrange the heating circuit on the surface of the porous ceramic body to obtain an atomization assembly, the end of the porous ceramic body where the heating body is arranged is the atomization end, and the end of the porous ceramic body away from the atomization end is the suction end ;

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

According to some embodiments of the present application, the step of disposing the heating circuit on the surface of the porous ceramic body includes: silk-screening the conductive paste on the surface of the porous ceramic body, and obtaining a heating body through second sintering.

According to some embodiments of the present application, the step of disposing the heating circuit on the surface of the porous ceramic body includes: silk-screening the conductive paste on the surface of the second oil-conducting body, and obtaining the heating body through second sintering.

In this 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 aforementioned materials have larger diameters, which facilitate the formation of larger pores during the firing process. In the embodiment of the present application, the average particle size of the first pore-forming agent is 30 μm-50 μm. 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 increase the porosity of ceramics when used as pore formers, and pores with pore diameters of 50 μm-200 μm are easily formed during the firing process of ceramics, and the distribution of pores is relatively dispersed. In the embodiment of the present application, the mass percentage content of the first pore-forming agent in the first feeding material is 20%-40%, and the mass percentage content of the first pore-forming agent in the first feeding material may be, but not limited to, 20%. %, 25%, 30% or 40%.

In the embodiment of the present application, the first ceramic powder includes one or more of alumina, silica, zirconia, 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 alumina and silica, wherein the mass percentage of alumina is 5%-15%, and the mass percentage of silica is 85%-95% %. Silica as a ceramic powder is easy to produce a porous structure during sintering. Adding alumina can increase the strength and toughness of the porous ceramic. The combination of alumina and silica can also further increase the microporous structure of the ceramic. In the embodiment of the present application, the particle size of the first ceramic powder is 0.5 μm-20 μm. The particle size of the first ceramic powder may specifically be, but not limited to, 0.5 μm, 1 μm, 3 μm, 5 μm, 10 μm, 15 μm or 20 μm. In the embodiment of the present application, the mass percentage content of the first ceramic powder in the first feeding material is 25%-35%, and the mass percentage content of the first ceramic powder in the first feeding material may be, but not limited to, 25%, 27%, 30% or 35%.

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

In the embodiment of the present application, the first dispersant includes one or more of a fatty acid-based dispersant and an acrylic resin-based dispersant. Further, the first dispersant includes stearic acid. Adding a dispersant can inhibit the agglomeration of the ceramic powder, so that the components are uniformly dispersed in the feed, which is conducive to the formation of a uniformly distributed pore structure. In the embodiment of the present application, the mass percentage content of the first dispersant in the first feeding material is 2%-10%, and the mass percentage content of the first dispersing agent in the first feeding material may be, but not limited to, 2%, 5%, 7% or 10%.

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 the formation of ceramics, which is beneficial to the formation of a ceramic green body with a stable structure in the subsequent two-shot injection molding process. 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 may be, but not limited to, 5%. %, 7% or 10%.

In this application, step 200 is the preparation process of the second feed. In the embodiment of the present application, the second feeding material includes the following raw materials by mass percentage: 10%-30% of the second pore-forming agent, 30%-40% of the second ceramic powder, 10%-30% of the first Two lubricants, 2%-10% of a second dispersant and 5%-10% of a second plasticizer. In the embodiments of the present application, the second pore-forming agent includes one or more of carbon powder and starch. The above materials facilitate the formation of smaller voids during firing. In the embodiment of the present application, the average particle size of the second pore-forming agent is 10 μm-30 μm. In some embodiments of the present application, the second pore-forming agent 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, they can form different pore sizes and pore shapes, so that the pores of the obtained porous ceramics are more dense, which is beneficial to refine the atomized liquid and achieve full atomization. In the embodiment of the present application, the mass percentage content of the second pore-forming agent in the second feeding material is 10%-30%, and the mass percentage content of the second pore-forming agent in the second feeding material may be, but not limited to, 10%. %, 15%, 20% or 30%.

In the embodiment of the present application, the second ceramic powder includes one or more of alumina, silica, zirconia, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate. In the embodiment of the present application, the particle size of the second ceramic powder is 0.5 μm-20 μm. In the 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 may be, but not limited to, 30%, 32%, 35% or 40%.

In the embodiment of the present application, the second lubricant includes one or more of paraffin wax, white wax, ozokerite wax, carnauba 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 may be, but not limited to, 10%, 15%, 20% or 30%.

In the embodiment of the present application, the second dispersant includes one or more of a fatty acid-based dispersant and an acrylic resin-based 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 may be, but not limited to, 2%, 5%, 7% or 10%.

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 may be, but not limited to, 5%. %, 7% or 10%.

In the embodiment of the present application, the internal mixing temperature of the first feeding material and the second feeding material is 120°C-180°C. The internal mixing temperature of the first feeding material and the second feeding material can be specifically, but not limited to, 120°C, 150°C, 160°C, 170°C or 180°C. The banburying time of the first feeding and the second feeding is 1h-5h. The mixing time of the first feeding material and the second feeding material can be specifically, but not limited to, 1 h, 3 h or 5 h.

In step 300 of the present application, the first feeding material and the second feeding material are prepared by a two-color injection molding process to obtain a ceramic blank. The two-color injection molding process specifically includes: clamping the mold 1 and the mold 2, and using the second feeding material to inject the first injection molding process. The second oil guide body blank is obtained; after the mold is cooled, the mold 1 and the mold 2 are transferred away, the second oil guide body blank and the mold 3 are closed, and the first feed is used for injection molding to form the first oil guide body body, and the second oil guide body body is fused with the first oil guide body body. In the embodiment of the present application, the first injection is performed at a pressure of 1000kgf/mm ² -1500kgf/mm ² , the injection time is 0.1s-2s, and the pressure is maintained at a pressure of 500kgf/mm ² -1500kgf/mm ² for 3s- 20s. In the embodiment of the present application, the temperature of the mold for the first injection is 150°C-300°C. In the embodiment of the present application, the second injection is performed at a pressure of 800kgf/mm ² -1500kgf/mm ² , the injection time is 0.1s-2s, and the pressure is maintained at a pressure of 500kgf/mm ² -1500kgf/mm ² for 3s- 20s. In the embodiment of the present application, the temperature of the mold for the second injection is 150°C-300°C.

In step 400 of the present application, the ceramic body is first sintered to obtain a first oil guide body and a second oil guide body, wherein the sintering temperature of the first sintering is 1000°C-1500°C, and the sintering time of the first sintering is 0.5h -3h, hold for 1h-4h after sintering. In the embodiment of the present application, the sintering temperature of the first sintering may specifically be, but not limited to, 1000°C, 1200°C, 1300°C, or 1500°C. The sintering time of the first sintering can be specifically, but not limited to, 0.5h, 1h, 2h or 3h.

The preparation method of the atomization assembly provided by 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 atomization assembly. The method has a simple and controllable process, is easy to operate, is conducive to the realization of automatic production, and the obtained atomizing component has good pore size distribution, high structural precision and high product yield.

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

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

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

The present application also provides an electronic cigarette, which includes the electronic atomization device described above in the present application.

The embodiments of the present application will be further described below in terms of a plurality of embodiments.

Example 1

A preparation method of an atomization component, comprising:

(1) Prepare the first feed:

After mixing the pore-forming agent 1, the ceramic powder 1, the lubricant 1, the dispersant 1 and the plasticizer 1, the first feeding material is prepared by banburying, wherein the first feeding material includes the following mass percentages of each raw material : 35wt% pore former 1 (specifically 30wt% wood fiber and 70wt% bamboo fiber), 25wt% ceramic powder 1 (specifically 15wt% alumina and 85wt% silica), 30wt% Lubricant 1 (specifically, paraffin), 5 wt% of dispersant 1 (specifically, stearic acid), and 5 wt% of plasticizer 1 (specifically, dioctyl phthalate). The average particle diameter of the pore former 1 was 40 μm.

(2) Prepare the second feed:

After mixing the pore-forming agent 2, the ceramic powder 2, the lubricant 2, the dispersant 2 and the plasticizer 2, the second feeding material is prepared by banburying, wherein the second feeding material includes the following mass percentages of each raw material : 20wt% pore former 2 (specifically 60wt% carbon powder and 40wt% starch), 40wt% ceramic powder 2 (specifically 15wt% alumina and 85wt% silica), 30wt% lubrication Agent 2 (specifically, palm wax), 3 wt% of dispersant 2 (specifically, stearic acid), and 7 wt% of plasticizer 2 (specifically, dioctyl phthalate). The average particle diameter of the pore former 2 was 20 μm.

(3) Preparation of ceramic body:

The mold 1 and the mold 2 are used to close the mold, and the second feeding material is used for injection molding to obtain a porous matrix embryo. The injection pressure was 1500 kgf/mm ² and the injection time was 1 s. The holding pressure was 1000 kgf/mm ² , the holding time was 10 s, and the mold temperature was 200°C.

After cooling, the porous base body is closed with the mold 3, and the first feed is used for injection molding, and the filling layer body is injected on the basis of the porous base body, and the ceramic body is obtained by fusion. The injection pressure was 1200 kgf/mm ² and the injection time was 1 s. The holding pressure was 1000 kgf/mm ² , the holding time was 10 s, and the mold temperature was 200°C.

(4) Sintering the ceramic green body, the sintering temperature is 1200°C, and the sintering time is 2 hours to obtain porous ceramics, and the heating circuit is screen printed on the surface of the porous ceramics, and the atomized components are obtained after sintering in an atmosphere furnace.

The schematic cross-sectional view of the atomization assembly obtained in Example 1 can be seen in FIG. 1. The middle of the second oil guide body close to the surface of the first oil guide body has a concave structure, and the surface of the first oil guide body close to the second oil guide body has the same structure as the first oil guide body. The embedded parts of the two oil-conducting bodies are matched with the recessed structure. The maximum dimension D1 of the first oil guide body along the thickness direction is 4.5mm, the maximum dimension D2 of the second oil guide body along the thickness direction is 3mm, the concave depth D3 of the second oil guide body is 2mm, and the second oil guide body is the same as the first oil guide body. The ratio of the thickness of an oil guide body is 1:1.5.

Example 2

A preparation method of an atomization component, comprising:

(1) Prepare the first feed:

After mixing the pore-forming agent 1, the ceramic powder 1, the lubricant 1, the dispersant 1 and the plasticizer 1, the first feeding material is prepared by banburying, wherein the first feeding material includes the following mass percentages of each raw material : 30wt% pore former 1 (specifically 50wt% carbon powder and 50wt% starch), 27wt% ceramic powder 1 (specifically 10wt% alumina and 90wt% silica), 35wt% lubrication Agent 1 (specifically, paraffin), 3 wt% of dispersant 1 (specifically, stearic acid), and 5 wt% of plasticizer 1 (specifically, dioctyl phthalate). The average particle diameter of the pore former 1 was 50 μm.

(2) Prepare the second feed:

After mixing the pore-forming agent 2, the ceramic powder 2, the lubricant 2, the dispersant 2 and the plasticizer 2, the first feeding material is prepared by banburying, wherein the first feeding material includes the following mass percentages of each raw material : 20wt% pore former 2 (specifically 60wt% carbon powder and 40wt% starch), 35wt% ceramic powder 2 (specifically 15wt% alumina and 85wt% silica), 25wt% lubrication Agent 2 (specifically, palm wax), 10 wt% of dispersant 2 (specifically, stearic acid), and 10 wt% of plasticizer 2 (specifically, dibutyl phthalate). The average particle diameter of the pore former 2 was 10 μm.

(3) Preparation of ceramic body:

After cooling, the porous base body and the mold 3 are closed, and the first feed is used for injection molding. The filling layer body is injected on the basis of the porous base body, and the body is fused together to obtain a ceramic body. The injection pressure was 1200 kgf/mm ² and the injection time was 1 s. The holding pressure was 1000 kgf/mm ² , the holding time was 10 s, and the mold temperature was 200°C.

In Example 2, the same mold as in Example 1 was used for injection molding, and the structure of the obtained atomizing assembly was the same as that in Example 1.

Example 3

The difference from Example 1 is that in step (3) of Example 3, different molds are used for injection molding. Multiple recessed structures. Please refer to FIG. 6 . FIG. 6 is a schematic cross-sectional view of the atomizing assembly provided in Embodiment 3 of the application, wherein the side surface c of the second oil guide body 20 close to the first oil guide body 10 has three concave structures, the first The surface of one side of the oil guide body 10 close to the second oil guide body 20 has three embedded parts that match the concave structure of the second oil guide body. In the atomization assembly of Example 3, 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 concave depth D3 of the second oil guide body is 2mm, and the ratio of the thickness of the second oil guide body to the first oil guide body is 1:1.5.

Example 4

The difference from Example 1 is that in step (3) of Example 4, different molds are used for injection molding, and in the atomization assembly of Example 4, the first oil guide bodies are all embedded in the concave structure of the second oil guide body , the first oil guiding body completely fills the concave structure. Please refer to FIG. 7 , which is a schematic cross-sectional view of the atomizing assembly provided in Embodiment 4 of the present application, wherein the thickness of the first oil guide body 10 is equal to the concave depth of the second oil guide body 20 . In the atomization assembly of Example 4, 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 concave depth D3 of the second oil guide body is 3mm, and the ratio of the thickness of the second oil guide body to the first oil guide body is 1:1.5.

Example 5

The difference from Example 1 is that in step (3) of Example 5, different molds are used for injection molding. The schematic cross-sectional view of the atomizing assembly of Example 5 can be found in Figure 1, and the difference from the atomizing component of Example 1 is that The thickness and recess depth of the first oil guide body and the second oil guide body are different. Specifically, in the atomization assembly of Example 5, the maximum dimension D1 of the first oil guide body along the thickness direction is 3 mm, and the second oil guide body along the thickness direction is 3 mm. The maximum dimension D2 in the thickness direction is 3 mm, the concave depth D3 of the second oil guiding body is 2 mm, and the thickness ratio of the second oil guiding body to the first oil guiding body is 1:1.

Example 6

The difference from Example 1 is that in step (3) of Example 6, different molds are used for injection molding. For a schematic cross-sectional view of the atomizing assembly of Example 6, please refer to FIG. 1 , and the difference from the atomizing component of Example 1 is that The thicknesses and concave depths of the first oil guide body and the second oil guide body are different. Specifically, in the atomization assembly of Example 5, the maximum dimension D1 of the first oil guide body along the thickness direction is 6 mm, and the second oil guide body along the thickness direction is 6 mm. The maximum dimension D2 in the thickness direction is 3 mm, the concave depth D3 of the second oil guiding body is 2 mm, and the thickness ratio of the second oil guiding body to the first oil guiding body is 1:2.

Comparative Example 1

A preparation method of an atomization component, comprising:

(1) Preparation of feed:

After mixing the pore-forming agent, ceramic powder, lubricant, dispersant and plasticizer, the feed is prepared by banburying, wherein the feed comprises the following raw materials in mass percentage: 35wt% of the pore-forming agent 1 ( Specifically 30wt% wood fiber and 70wt% bamboo fiber), 25wt% ceramic powder (specifically 15wt% alumina and 85wt% silica), 30wt% lubricant (specifically paraffin), 5wt% The dispersant (specifically, stearic acid) and 5wt% of the plasticizer (specifically, dioctyl phthalate). The average particle size of the pore former was 50 μm.

(2) Preparation of ceramic body:

The feeding 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 was 1500 kgf/cm ² and the injection time was 1 s. The holding pressure was 1000 kgf/cm ² , the holding time was 10 s, and the mold temperature was 200°C.

(3) Sintering the ceramic green body, the sintering temperature is 1200°C, and the sintering time is 2 hours to obtain porous ceramics, and the heating circuit is screen-printed on the surface of the porous ceramics, and the atomized components are obtained after sintering in an atmosphere furnace.

8 is a schematic cross-sectional view of the atomization assembly provided in Comparative Example 1 of the present application, wherein the atomization assembly includes a porous ceramic body 10 and a heating body 20 . In the atomizing assembly of Comparative Example 1, the maximum dimension D1 of the porous ceramic body in the thickness direction is 5.5 mm.

Comparative Example 2

The difference from Example 1 is that in the atomization assembly of Comparative Example 2, the second oil guide body does not have a concave structure, and the first oil guide body does not have an embedded portion. Please refer to FIG. 9 . FIG. 9 is a schematic structural diagram of the atomization assembly provided by Comparative Example 2 of the application, wherein the atomization assembly includes a first oil guide body 10 , a second oil guide body 20 and a heating body 30 , and the first oil guide body 30 . The contact surfaces of the body 10 and the second oil guide body 20 are of a planar structure. In the atomization 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 second oil guide body and the first oil guide body have a maximum dimension D2 of 3 mm. The ratio of the thickness of the body is 1:1.5.

Comparative Example 3

Compared with the atomization assembly structure of Example 1, the atomization 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 atomization assembly of Example 1 is in Comparative Example 3. The atomizing component of the 2000 has a hollow structure.

The preparation process of the ceramic body is as follows:

The second feeding material of Example 1 is used for injection molding, and mold 1 and mold 2 are used for injection molding to obtain a ceramic green body. The injection pressure was 1500 kgf/mm ² and the injection time was 1 s. The holding pressure was 1000 kgf/mm ² , the holding time was 10 s, and the mold temperature was 200°C.

The ceramic green body is sintered, the sintering temperature is 1200°C, and the sintering time is 2 hours to obtain a porous ceramic body, a heating circuit is printed on the surface of the porous ceramic body, and an atomized component is obtained after sintering in an atmosphere furnace.

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

Comparative Example 4

The difference from Comparative Example 2 is that in step (3) of Comparative Example 4, different molds are used for injection molding. The schematic cross-sectional view of the atomizing assembly of Comparative Example 4 can be found in Figure 8, and the difference from the atomizing 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 atomization assembly of Comparative Example 4, the maximum dimension D1 of the first oil guide body along the thickness direction is 3 mm, and the thickness of the second oil guide body along the thickness direction is 3 mm. The maximum dimension D2 is 3 mm, and the thickness ratio of the second oil guide body to the first oil guide body is 1:1.

Effect Example

In order to verify the performance of the atomization assembly prepared in the present application, the present application also provides effect examples.

The pore size distribution of the atomization component was characterized by mercury intrusion. The specific test method includes: put the atomization components of Examples 1-6 and Comparative Examples 1-4 into the test chamber, open the test equipment and pressurize the mercury into the pores of the sample Inside, according to the change curve of mercury content and pressure, the pore size data is obtained. Please refer to Table 1 for the pore size data of the atomizing assemblies of Examples 1-6 and Comparative Examples 1-4.

Use the electronic cigarette porous ceramic atomizing core porosity intelligent analysis system method to measure the porosity of the atomizing components. The specific test method includes: measuring the atomizing components of Examples 1-6 and Comparative Examples 1-4 on the measuring tray of the device. Heavy, and then put it into the vacuum equipment for vacuuming to let the water enter the product. Then put the atomization 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 were obtained by systematic analysis. Please refer to Table 1 for the porosity of the atomizing assemblies of Examples 1-6 and Comparative Examples 1-4.

The oil-conducting speed of the atomizing component was measured by the test method for the oil-conducting ability of the electronic cigarette atomizer. The specific test method includes: placing the atomizing components of Examples 1-6 and Comparative Examples 1-4 on a precise electronic balance, and dripping with a needle Take 1 drop of e-juice on the porous ceramic atomizer and time it. Stop timing when all the oil droplets penetrate into the sample, and calculate the oil conduction speed according to the weight/time of the e-liquid. Please refer to Table 2 for the oil guiding speed of the atomizing assemblies of Examples 1-6 and Comparative Examples 1-4.

The crushing strength of the atomization assembly was measured by the extrusion test method. The specific test method includes: placing the atomization assemblies of Examples 1-6 and Comparative Examples 1-4 in a special fixture, and using a universal testing machine for extrusion testing , when the product is broken and the test is stopped, the ratio of the maximum force obtained to the stressed area is the crush strength. Please refer to Table 2 for the crush strength of the atomizing assemblies of Examples 1-6 and Comparative Examples 1-4.

Assemble the sample with the oil cup, support and electrode, and then simulate the 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 pressure oil leakage of the atomizing assemblies of Examples 1-6 and Comparative Examples 1-4.

Table 1 Structure parameter table of atomization components of Examples 1-6 and Comparative Examples 1-4

Among them, the pore size distribution D _50μm-200μm of the first oil guide body refers to the ratio of the number of pores with a pore diameter of 50μm-200μm to the total number of pores in the first oil guide body; the pore size distribution D of the second oil guide body D _{5μm- 30 μm} refers to the ratio of the number of holes with a diameter of 5 μm-30 μm to the total number of holes in the second oil-conducting body.

Table 2 Performance parameter table of atomization components of Examples 1-6 and Comparative Examples 1-4

From Table 1 and Table 2, it can be known that the atomizing component of Comparative Example 1 does not have gradient pore size and porosity distribution, the oil guiding speed of the atomizing component is too high, the phenomenon of oil leakage occurs, and the crushing strength of the atomizing component Also lower; the contact surface of the first oil guide body and the second oil guide body of the atomization assembly of Comparative Example 2 is a plane structure, and the oil guide speed of the atomization assembly is low; the atomization assembly of Comparative Example 3 has a hollow structure, and the mist The crushing strength of the atomizing component is low, and the oil guiding speed is too high, and the atomizing component leaks liquid, which makes the atomization effect worse; in the atomizing component of Comparative Example 4, the second oil guiding body and the first oil guiding body The thickness ratio of the body is 1:1, the oil guiding rate is relatively higher than that of Comparative Example 2, and the atomization effect is improved. The body does not have a concave structure, so the oil guiding speed is still lower than that of the atomizing assembly in Example 5. The atomizing assembly provided by the embodiment of the present application has moderate oil guiding rate and high crushing strength, and the product has no oil leakage, which can achieve a good atomizing effect of the atomizer, and make the atomizer have a longer service life.

In order to further embody the beneficial effects of the present disclosure, the atomizing components of Examples 1-6 and Comparative Examples 1-4 were assembled with a support, an oil cup, etc., respectively, and connected to the circuit (specifically, the power supply is connected through both ends of the heating body). , the heating element resistance is 1.5Ω, the control output voltage is 4V, and the inner cavity of the atomizing core is always filled with e-liquid, and the heating cycle is 300 times, each heating is 1s, and the interval time is 5s. The smoke concentration of the atomizing component is obtained by testing the electronic cigarette laser concentration meter, and the generated smoke concentration is 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 effects of the atomization components of Examples 1-6 and Comparative Examples 1-4.

Table 3 The atomization effect table of the atomization components of Examples 1-6 and Comparative Examples 1-4

It can be known from Table 3 that the atomization components of Comparative Examples 1-4 had obvious carbon deposition within 200 times of cyclic heating, and the smoke concentration decreased significantly after 300 times of cyclic heating. However, in the atomization assembly provided by the embodiment of the present application, carbon deposition occurs only after 250 times of cyclic heating, and the smoke concentration is still above 60% after 300 times of cyclic heating. The above results show that the atomization assembly provided by the present application has a relatively stable and excellent atomization effect, and is not easy to deposit carbon after being used for a long time.

The above description is the preferred embodiment of the present application, but should not be construed as a limitation on the scope of the present application. It should be pointed out that for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can also be made, and these improvements and modifications are also regarded as the protection scope of the present application.

Claims

An atomization assembly, characterized in that the atomization assembly includes a porous ceramic body and a heating body disposed on the surface of the porous ceramic body, the porous ceramic body includes a first oil-conducting body and a second oil-conducting body, and the The end of the porous ceramic body where the heating body is arranged is the atomization end, and the end of the porous ceramic body away from the atomization end is the liquid absorption end;

the first oil guiding body is located at the liquid suction end;

A side surface of the second oil guide body close to the first oil guide body has a concave structure, and part or all of the first oil guide body is embedded in the concave structure of the second oil guide body.
The atomizer assembly according to claim 1, wherein the first oil guide body is partially embedded in the second oil guide body, and the first oil guide body comprises all parts embedded in the second oil guide body. The embedded portion of the recessed structure is matched with the recessed structure, and the embedded portion completely fills the recessed structure.
The atomizer assembly according to claim 1 or 2, wherein the first oil guide body is fully embedded in the concave structure of the second oil guide body, and the first oil guide body is in phase with the concave structure. In cooperation, the first oil guiding body completely fills the recessed structure.
The atomizer assembly according to any one of claims 1 to 3, wherein the first oil guide body is fully embedded in the concave structure of the second oil guide body, and the first oil guide body is connected to the concave structure of the second oil guide body. The recessed structure is matched with the recessed structure, and the first oil guide body partially fills the recessed structure.
The atomization assembly according to any one of claims 1 to 4, wherein the oil guiding speed of the first oil guiding body is greater than the oil guiding speed of the second oil guiding body.
The atomizing assembly according to any one of claims 1 to 5, wherein the concave structure is single or multiple.
The atomizer assembly according to any one of claims 1 to 6, wherein the concave structure is single, and the concave structure is located in the middle of the second oil guide body.
The atomizing assembly according to any one of claims 1 to 7, wherein the cross-sectional area of the recessed structure is less than or equal to 20 mm 2 .
The atomization assembly according to any one of claims 1 to 8, wherein the average pore diameter of the first oil guide body is greater than or equal to the average pore diameter of the second oil guide body.
The atomizing assembly according to any one of claims 1 to 9, wherein, in the first oil guide body, the number of holes with a pore diameter greater than 20 μm and less than or equal to 100 μm accounts for 90% or more.
The atomizer assembly according to any one of claims 1 to 10, wherein, in the second oil guide 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.
The atomization assembly according to any one of claims 1 to 11, wherein the porosity of the first oil-conducting body is greater than or equal to the porosity of the second oil-conducting body.
The atomization assembly according to any one of claims 1 to 12, wherein the porosity of the first oil-conducting body is 40%-80%.
The atomization assembly according to any one of claims 1 to 13, wherein the porosity of the second oil-conducting body is 20%-60%.
The atomizer assembly according to any one of claims 1 to 14, wherein the thermal conductivity of the first oil guide body is 0.2W/(m·K)-0.8W/(m·K) , the thermal conductivity of the second oil-conducting body is 0.4W/(m·K)-1W/(m·K).
The atomizing assembly according to any one of claims 1 to 15, wherein the maximum dimension of the first oil guide body along the thickness direction is 0.5 mm-3 mm; the second oil guide body along the thickness direction The maximum size is 0.5mm-3mm. The maximum size of the first oil guide body along the thickness direction refers to the maximum distance from the surface of the first oil guide body away from the second oil guide body to the surface of the second oil guide body. The maximum dimension of the second oil guide body along the thickness direction refers to the maximum distance from the contact surface of the second oil guide body and the first oil guide body to the heating body, and the thickness direction is the extension direction from the liquid suction end to the atomization end.
The atomizing assembly according to any one of claims 1 to 16, wherein the ratio of the largest dimension of the second oil guide body in the thickness direction to the largest dimension of the first oil guide body in the thickness direction is 1:(0.8-1.5).
The atomizer assembly according to any one of claims 1 to 17, wherein, in the second oil guide body, the depth of the concave structure is 0.5mm-2mm.
The atomizing assembly according to any one of claims 1 to 18, wherein the oil guiding speed of the atomizing assembly is 1 mg/s-3 mg/s, and the crushing strength of the atomizing assembly is 10 Mpa -20Mpa.
The atomizing assembly according to any one of claims 1 to 19, wherein the heating body comprises any one of a heating coil or a heating mesh.
A method for preparing an atomizing assembly, comprising the following steps:

Mixing the first pore-forming agent, the first ceramic powder, the first lubricant, the first dispersant and the first plasticizer, and obtaining the first feeding material after banburying;

Mixing the second pore-forming agent, the second ceramic powder, the second lubricant, the second dispersant and the second plasticizer, and obtaining the second feeding material after banburying;

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

The ceramic green body is first sintered to obtain a porous ceramic body including a first oil-conducting body and a second oil-conducting body; a heating circuit is arranged on the surface of the porous ceramic body to obtain the atomization component, and the porous ceramic body is The end of the body where the heating body is arranged is the atomization end, and the end of the porous ceramic body away from the atomization end is the suction end;

the first oil guide body is located at the liquid suction end;

A side surface of the second oil guide body close to the first oil guide body has a concave structure, and part or all of the first oil guide body is embedded in the concave structure of the second oil guide body.
The preparation method according to claim 21, wherein the step of disposing the heating circuit on the surface of the porous ceramic body comprises: silk-screening conductive paste on the surface of the second oil-conducting body, and obtaining the heating through a second sintering body.
The preparation method according to any one of claims 21 to 22, wherein the first oil guide body is fully embedded in the concave structure of the second oil guide body, and the first oil guide body and the The concave structure is matched, and the first oil guide body partially fills the concave structure.
The preparation method according to any one of claims 21 to 23, wherein the first oil guide body is fully embedded in the concave structure of the second oil guide body, and the first oil guide body and the The concave structure is matched, and the first oil guide body completely fills the concave structure.
The preparation method according to any one of claims 21 to 24, wherein the first oil guiding body is partially embedded in the second oil guiding body, and the first oil guiding body comprises embedding the second oil guiding body The embedded part of the concave structure of the oil guide body, the embedded part is matched with the concave structure, and the embedded part completely fills the concave structure.
The preparation method according to any one of claims 21 to 25, wherein 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- 30μm.
The preparation method according to any one of claims 21 to 26, wherein,

The first feeding material includes each raw material in the following mass percentages: 20%-40% of the first pore-forming agent, 25%-35% of the first ceramic powder, 25%-50% of all the the first lubricant, 2%-10% of the first dispersant, and 5%-10% of the first plasticizer;

The second feeding material includes the following raw materials by mass percentage: 10%-30% of the second pore-forming agent, 30%-40% of the second ceramic powder, 10%-30% of all the the second lubricant, 2%-10% of the second dispersant, and 5%-10% of the second plasticizer.
The preparation method according to any one of claims 21 to 27, wherein the first pore-forming agent comprises 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.
The preparation method according to any one of claims 21 to 28, wherein,

The first ceramic powder includes one or more of alumina, silica, zirconia, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate;

The second ceramic powder includes one or more of alumina, silica, zirconia, calcium oxide, calcium carbonate, magnesium oxide, barium carbonate and barium sulfate;

The first lubricant includes one or more of paraffin wax, white wax, ozokerite, carnauba wax, mineral wax, Fischer-Tropsch wax, and beeswax;

The second lubricant includes one or more of paraffin wax, white wax, ozokerite wax, carnauba wax, mineral wax, Fischer-Tropsch wax, and beeswax;

The first dispersant includes one or more of a fatty acid-based dispersant and an acrylic resin-based dispersant;

The second dispersant includes one or more of a fatty acid-based dispersant and an acrylic resin-based dispersant;

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.
The preparation method according to any one of claims 21 to 29, wherein the first dispersant and the second dispersant both comprise stearic acid.
The preparation method according to any one of claims 21 to 30, wherein the banburying temperature of the banburying is 120°C-180°C, and the banburying time of the banburying is 1h-5h.
The preparation method according to any one of claims 21 to 31, wherein the two-color injection molding process comprises: clamping the mold 1 and the mold 2, and using the second feed to obtain the second injection through the first injection Oil guide body: Clamp the second oil guide body with the mold 3, and use the first feeding material to obtain the first oil guide body through second injection molding.
The preparation method of claim 32, wherein,

The first injection molding includes: injecting at a pressure of 1000kgf/mm 2 -1500kgf/mm 2 , the injection time is 0.1s-2s, and maintaining the pressure for 3s-20s at a pressure of 500kgf/mm 2 -1500kgf/mm 2 ;

The second injection molding includes: injection at a pressure of 800kgf/mm 2 -1500kgf/mm 2 , injection time is 0.1s-2s, and pressure holding at a pressure of 500kgf/mm 2 -1500kgf/mm 2 for 3s-20s.
The preparation method according to any one of claims 32 or 33, wherein,

The temperature of the first injection mold is 150°C-300°C;

The temperature of the second injection mold is 150°C-300°C.
The preparation method according to any one of claims 21 to 34, wherein the sintering temperature of the first sintering is 1000°C-1500°C, and the sintering time of the first sintering is 0.5h-3h.
The preparation method according to any one of claims 21 to 35, wherein the oil guiding speed of the first oil guiding body is greater than the oil guiding speed of the second oil guiding body.
The preparation method according to any one of claims 21 to 36, wherein the concave structure is single or multiple.
The preparation method according to any one of claims 21 to 37, wherein the concave structure is single, and the concave structure is located in the middle of the second oil guide body.
The preparation method according to any one of claims 21 to 38, wherein the cross-sectional area of the recessed structure is less than or equal to 20 mm 2 .
The preparation method according to any one of claims 21 to 39, wherein the average pore size of the first oil guide body is greater than or equal to the average pore size of the second oil guide body.
The preparation method according to any one of claims 21 to 40, wherein, in the first oil-conducting body, the number of pores with a pore size greater than 20 μm and less than or equal to 100 μm accounts for 90% or more.
The preparation method according to any one of claims 21 to 41, wherein, in the second oil-conducting body, the number of pores with a pore diameter greater than 10 μm and less than or equal to 30 μm accounts for 90% or more.
The preparation method according to any one of claims 21 to 42, wherein the porosity of the first oil-conducting body is greater than or equal to the porosity of the second oil-conducting body.
The preparation method according to any one of claims 21 to 43, wherein the porosity of the first oil-conducting body is 40%-80%.
The preparation method according to any one of claims 21 to 44, wherein the porosity of the second oil-conducting body is 20%-60%.
The preparation method according to any one of claims 21 to 45, wherein the maximum dimension of the first oil guide body along the thickness direction is 0.5mm-3mm; The maximum size is 0.5mm-3mm. The maximum size of the first oil guide body along the thickness direction refers to the maximum distance from the surface of the first oil guide body away from the second oil guide body to the surface of the second oil guide body. The maximum dimension of the oil guide body along the thickness direction refers to the maximum distance from the contact surface of the second oil guide body and the first oil guide body to the heating body, and the thickness direction is the extending direction from the liquid suction end to the atomization end.
The preparation method according to any one of claims 21 to 46, wherein the ratio of the largest dimension of the second oil guide body in the thickness direction to the largest dimension of the first oil guide body in the thickness direction is 1:(0.8-1.5).
The preparation method according to any one of claims 21 to 47, wherein, in the second oil guide body, the depth of the concave structure is 0.5mm-2mm.
An atomization assembly, characterized in that, the atomization assembly is prepared by the method according to any one of claims 21-48.
An atomizer, characterized in that the atomizer includes an oil storage assembly and the atomization assembly according to any one of claims 1-20 and 49; the oil storage assembly includes an oil storage chamber , the liquid in the oil storage cavity is in direct contact with the liquid suction end of the atomization assembly.
An electronic atomization device, characterized in that the electronic atomization device comprises a power supply assembly and the atomizer as claimed in claim 50, wherein the power supply assembly and the atomizer are electrically connected, and are used to supply the Atomizer powered.
An electronic cigarette, characterized in that the electronic cigarette comprises the electronic atomization device according to claim 51 .