Atomizing core and atomizing device

Abstract

The utility model relates to an atomizing core and an atomizing device, the atomizing core is provided with a central axis extending in the first direction, the atomizing core is provided with an airflow channel, the channel wall of the airflow channel forms a heating surface used for heating an aerosol generating substrate, and the airflow channel is provided with an air inlet and an air outlet which are oppositely arranged in the first direction; the sectional area of the air outlet is larger than that of the air inlet. According to the atomizing core, the sectional area of the air outlet of the airflow channel is larger than that of the air inlet, so that the surface area of the channel wall of the airflow channel can be increased under the condition that the distance between the air inlet and the air outlet is not changed, the heating area of a heating surface formed by the channel wall is increased, and the atomizing efficiency is effectively improved. Moreover, the airflow channel tends to diffuse outwards from the air inlet to the air outlet, so that the collision opportunity between aerosol particles is reduced, the condensation phenomenon of large-particle aerosol is reduced, the fog consumption ratio is increased, the taste of the aerosol is optimized, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of atomization, in particular to an atomization core and an atomization device. BACKGROUND

[0002] An aerosol is a colloidal dispersion system formed by small particles of solid or liquid dispersed and suspended in a gaseous medium. Since the aerosol can be absorbed by the human body through the respiratory system, it provides a new type of alternative absorption method for users. An atomization device refers to a device that forms an aerosol by heating or other means on the basis of stored atomizable medium. The atomizable medium includes liquid, gel, paste or solid aerosol generating substrate. Atomization of these media can deliver aerosol for inhalation to users, replacing conventional product forms and absorption methods.

[0003] Some existing atomization devices are provided with a ceramic atomization core for heating the aerosol generating substrate. The ceramic atomization core is mainly divided into a long strip-shaped atomization core and a round pipe-shaped atomization core. The airflow passage formed by the long strip-shaped atomization core has a relatively complex structure and a slow aerosol transmission speed. Although the airflow passage formed by the round pipe-shaped atomization core has a simple structure and a fast aerosol transmission speed, the proportion of large particles in the aerosol is high, and the atomization consumption of the aerosol generating substrate is low. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide an atomization core and an atomization device in view of the problem that the proportion of large particles in the aerosol generated by the round pipe-shaped atomization core is high and the atomization consumption is low.

[0005] An atomization core is provided with an airflow passage, the airflow passage has an air inlet and an air outlet oppositely arranged in a first direction, the atomization core has a heating surface for heating an aerosol generating substrate, and the heating surface is formed on a passage wall of the airflow passage.

[0006] In this embodiment, the cross-sectional area of the air outlet is greater than the cross-sectional area of the air inlet.

[0007] In one of the embodiments, the cross-sectional area of the airflow passage gradually increases from one end having the air inlet to one end having the air outlet.

[0008] In one of the embodiments, the atomization core has a central axis extending in the first direction, and at least part of the passage wall of the airflow passage is inclined outward away from the central axis and extends linearly from one end having the air inlet to one end having the air outlet.

[0009] In one of the embodiments, the inclined angle of the passage wall of the airflow passage compared to the central axis is greater than 0° and less than or equal to 45° from one end having the air inlet to one end having the air outlet.

[0010] In one of the embodiments, the line connecting the center point of the air inlet and the center point of the air outlet is coincident with the central axis.

[0011] In one of the embodiments, the line connecting the center point of the air inlet and the center point of the air outlet is obliquely extended compared to the central axis.

[0012] In one of the embodiments, the atomizing core comprises a liquid guide and a heating element, the liquid guide is provided with the airflow channel, and the heating element is arranged inside the liquid guide or on the channel wall of the airflow channel.

[0013] In one of the embodiments, the atomizing core has a central axis extending in a first direction from one end having the air inlet to the other end having the air outlet, and the outer side wall of the liquid guide extends in the first direction; or

[0014] In one of the embodiments, the outer side wall of the liquid guide extends obliquely outward away from the central axis from one end having the air inlet to the other end having the air outlet; or

[0015] In one of the embodiments, the outer side wall of the liquid guide extends obliquely inward toward the central axis from one end having the air inlet to the other end having the air outlet.

[0016] In one of the embodiments, the liquid guide is formed of a porous material; and / or

[0017] The heating element is formed of at least one of a heating wire, a heating mesh, and a heating film.

[0018] An atomizing device comprising the above atomizing core, the atomizing device further comprises a battery assembly arranged at one end of the atomizing core and electrically connected with the atomizing core, and the atomizing device further has an air outlet channel communicating the air outlet of the airflow channel with the external atmosphere.

[0019] The above atomizing core, since the cross-sectional area of the air outlet of the airflow channel is larger than that of the air inlet, the surface area of the channel wall of the airflow channel can be increased without changing the distance between the air inlet and the air outlet, thereby increasing the heating area of the heating surface formed by the channel wall, and effectively improving the atomizing efficiency. Moreover, the airflow channel has a tendency to diffuse outward from the air inlet to the air outlet, reducing the collision opportunities between aerosol particles, thereby reducing the condensation phenomenon of large-particle aerosols to reduce the proportion of large-particle aerosols, thereby improving the atomizing ratio, optimizing the taste of aerosols, and improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a schematic view of an atomizing device according to an embodiment of the present application.

[0021] Figure 2 An internal structure diagram of an atomization device according to an embodiment of the present application.

[0022] Figure 3 An internal structure diagram of an atomization device according to an embodiment of the present application.

[0023] Figure 4 An internal structure diagram of an atomization device according to an embodiment of the present application.

[0024] Figure 5 An internal structure diagram of an atomization device according to an embodiment of the present application.

[0025] Figure 6 An internal structure diagram of an atomization device according to an embodiment of the present application.

[0026] Figure 7 An internal structure diagram of an atomization device according to an embodiment of the present application.

[0027] Figure 8 An internal structure diagram of an atomization device according to an embodiment of the present application.

[0028] Figure 9 An internal structure diagram of an atomization device according to an embodiment of the present application.

[0029] Explanation of reference signs:

[0030] 100, atomization device; 20, atomization assembly; 21, main housing; 21a, liquid storage cavity; 23, suction nozzle; 23a, air outlet passage; 25, atomization core; 252, liquid guide; 2521, air flow passage; 2521a, air inlet; 2521b, air outlet; 254, heating element. DETAILED DESCRIPTION

[0031] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated to cover all such modifications as fall within the scope of the application. It should be noted that the specific embodiments of the present application do not limit the scope of the present application.

[0032] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0033] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0034] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] It is to be noted that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it is to be understood that when a layer is referred to as being "connected", "coupled", or "adjacent" to another element, it can be directly connected, coupled, or adjacent to the other element, or intervening elements can also be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. The terminology used herein, such as "vertical", "horizontal", "upper", "lower", "left", "right", and the like, is for the purpose of illustration only and does not in any way limit the scope of the present application.

[0037] Referring to Figure 1 Embodiments of the present application provide an atomization device 100 for heating an aerosol generating substrate to generate an aerosol for a user. The aerosol generating substrate includes, but is not limited to, a liquid material for medical, health, beauty, and wellness purposes.

[0038] The atomization device 100 includes an atomization assembly 20 and a battery assembly 40. The battery assembly 40 is disposed at one end of the atomization assembly 20 and is electrically connected to the atomization assembly 20. The atomization assembly 20 is configured to store the aerosol generating substrate and heat the aerosol generating substrate to generate an aerosol for a user under the action of the electric energy of the battery assembly 40.

[0039] The atomization assembly 20 includes a main housing 21, a mouthpiece 23, and an atomization core 25. The main housing 21 has a hollow structure. The atomization core 25 is received in the main housing 21 and is electrically connected to the battery assembly 40. An outer side wall of the atomization core 25 and an inner side wall of the main housing 21 form a liquid storage cavity 21a therebetween. The liquid storage cavity 21a is configured to store the aerosol generating substrate. The mouthpiece 23 is disposed at one end of the main housing 21. The mouthpiece 23 forms an air outlet passage 23a for communicating the atomization core 25 with the outside atmosphere. The aerosol generating substrate stored in the liquid storage cavity 21a continuously enters the atomization core 25, is heated and atomized by the atomization core 25 to form an aerosol, and flows out through the air outlet passage 23a of the mouthpiece 23 to be inhaled by a user. In some other embodiments, the air outlet passage 23a can be formed by the mouthpiece 23 and the main housing 21 together.

[0040] As described in the background section, the existing atomization cores are mainly divided into long strip-shaped atomization cores and round tube-shaped atomization cores.

[0041] In order to facilitate contact with the conductive member below to be electrically connected to the battery assembly, the heating surface of the long strip-shaped atomization core is usually formed on the bottom surface of the atomization core, thereby forming a downward atomization mode. However, the shape of the airflow passage formed by the long strip-shaped atomization core is relatively complex, which causes aerosol particles with a large particle size to easily gather on the passage wall to form condensate, resulting in insufficient sweetness of the aerosol, low mist consumption ratio, and adverse effects on the aroma reduction degree and temperature of the aerosol, thereby affecting the user experience.

[0042] The airflow passage formed by the circular tube-shaped atomizing core has a relatively simple shape, the heating surface of the circular tube-shaped atomizing core is located on the inner wall of the atomizing core to form a side atomization atomization mode, and the transmission speed of the aerosol is relatively fast. However, during the atomization process, since the aerosol is generated at the center position of the circular tube-shaped atomizing core, the atomization space and the aerosol storage space are small, thereby on the one hand, the aerosol particles are easy to gather in the airflow passage and condense in large quantities, and the particle size of the aerosol increases and the number decreases, which also makes the sweetness of the aerosol too high, affects the atomization effect, and on the other hand, the aerosol aroma richness and layering are insufficient due to the limitation of the tangential atomization form of the airflow and the atomization surface, thereby affecting the user experience.

[0043] In view of the above technical problems, please refer to Figure 2 and Figure 3 , the atomizing core 25 of the present application has a center axis L extending in the first direction (i.e. the Z direction in Figure 2 , the atomizing core 25 is provided with an airflow passage 2521 for the flow of airflow, the airflow passage 2521 is provided with an air inlet 2521a and an air outlet 2521b oppositely arranged in the first direction, and the cross-sectional area of the air outlet 2521b is greater than that of the air inlet 2521a. The atomizing core 25 has a heating surface for heating the aerosol generating substrate, and the heating surface is formed on the passage wall of the airflow passage 2521. In this way, the external airflow flows unidirectionally in the airflow passage 2521 from the air inlet 2521a to the air outlet 2521b of the airflow passage 2521, and during the atomization process, the external airflow flows into the airflow passage 2521 from the air inlet 2521a, and then carries the aerosol generated by the heating and atomization of the aerosol generating substrate to flow out from the air outlet 2521b.

[0044] Since the cross-sectional area of the air outlet 2521b of the airflow passage 2521 is greater than that of the air inlet 2521a, the surface area of the passage wall of the airflow passage 2521 can be increased without changing the distance between the air inlet 2521a and the air outlet 2521b, thereby increasing the heating area of the heating surface formed by the passage wall, and further effectively improving the atomization efficiency. Moreover, the airflow passage 2521 has a tendency to diffuse outward from the air inlet 2521a to the air outlet 2521b, reducing the collision opportunities between aerosol particles, thereby reducing the condensation phenomenon of large-particle aerosol, further improving the aerosol consumption ratio, optimizing the taste of the aerosol, and improving the user experience.

[0045] In some embodiments, the channel wall of the airflow channel 2521 extends smoothly, and the cross-sectional area of ​​the airflow channel 2521 gradually increases from the end with the air inlet 2521a to the end with the air outlet 2521b. In other words, the two sides of the longitudinal section of the airflow channel 2521 parallel to the first direction are each a smoothly extending straight line or arc. The areas of any two cross-sections of the airflow channel 2521 are different, and the area of ​​the cross-section near the air outlet 2521b is larger than the area of ​​the cross-section near the air inlet 2521a.

[0046] It is understood that the airflow channel 2521 formed by the channel wall can be any one of an inverted truncated cone, an inverted sphere, an inverted prism, etc. It should be noted that the inversion referred to herein means that the cross-sectional area of ​​the lower end is smaller than the cross-sectional area of ​​the upper end, that is, the lower end is smaller and the upper end is larger. Taking into account the convenience of the preparation process and the consistency of the atomizer core product, the airflow channel 2521 formed by the channel wall can be an inverted truncated cone, that is, it is funnel-shaped.

[0047] In this way, the heating area of ​​the heating surface formed by the channel wall is effectively increased without changing the distance between the air inlet 2521a and the air outlet 2521b, and the aerosol in the air flow channel 2521 gradually diffuses outward from the air inlet 2521a to the air outlet 2521b, thereby effectively reducing the chance of collision between aerosol particles, and the airflow carrying the aerosol can flow out smoothly along the smoothly extended channel wall, effectively preventing the aerosol particles from colliding with the channel wall.

[0048] Furthermore, from the end with the air inlet 2521a to the end with the air outlet 2521b, at least a portion of the channel wall of the air flow channel 2521 is inclined outwardly away from the central axis and extends in a straight line. The channel wall of the air flow channel 2521 is inclined at an angle α of 0° to 90° relative to the central axis of the air flow channel 2521. Preferably, the inclination angle α is greater than 0° and less than or equal to 45°, so that the cross-sectional area of ​​the air flow channel 2521 gradually increases from the end with the air inlet 2521a to the end with the air outlet 2521b, allowing the aerosol to flow smoothly along the channel wall of the air flow channel 2521. In some other embodiments, at least a portion of the channel wall of the air flow channel 2521 may also extend in a curved manner. It should be noted that the "outward" in the "outwardly inclined extension" mentioned above refers to the direction from the central axis of the air flow channel 2521 in the radial direction pointing to the edge of the atomizer core 25.

[0049] like Figure 3As shown, in one embodiment, the channel wall of the airflow passage 2521 extends outwardly relative to the central axis, the inclination angle a of the channel wall in each region in the circumferential direction relative to the central axis of the airflow passage 2521 is equal, the air inlet 2521a and the air outlet 2521b are circular, the center line of the center point of the air inlet 2521a and the center point of the air outlet 2521b coincides with the central axis, that is, the center point of the air inlet 2521a and the center point of the air outlet 2521b are aligned in the first direction, that is, the channel wall of the airflow passage 2521 is a reversed right circular truncated cone.

[0050] As shown in the drawings, Figure 4 In other embodiments, the channel wall of the airflow passage 2521 extends outwardly relative to the central axis, but the inclination angle a of the channel wall in different regions in the circumferential direction relative to the central axis of the airflow passage 2521 is different, the center line of the center point of the air inlet 2521a and the center point of the air outlet 2521b extends obliquely relative to the central axis, that is, the center point of the air inlet 2521a and the center point of the air outlet 2521b are misaligned in the first direction, that is, the channel wall of the airflow passage 2521 is a reversed inclined right circular truncated cone.

[0051] As a preferred embodiment, the inclination angle a of the channel wall of the airflow passage 2521 relative to the central axis of the airflow passage 2521 is 5°, so that the sweetness of the aerosol can be reduced without changing the battery assembly 40, the composition of the aerosol generating substrate and other structures, and the different taste needs of users can be met.

[0052] It can be understood that the inclination angle a of the channel wall of the airflow passage 2521 relative to the central axis of the airflow passage 2521 is not limited, by changing the inclination angle a of the channel wall, on the one hand, it can adapt to the structural design needs of different atomizing cores 25, and on the other hand, it can directionally control the number and proportion of sweet particles and aroma particles in the aerosol, and under the condition that the composition of the aerosol generating substrate is unchanged, aerosols with different concentration characteristics of aroma and sweetness can be restored, effectively shortening the product development cycle and improving the research and development efficiency. Moreover, the atomizing core 25 forms a kind of upward atomization mode with lateral atomization and upward atomization, the airflow in the airflow passage 2521 and the heating surface form a certain angle of intersection, and by adjusting the inclination angle of the channel wall, different intersection angles of the airflow and the heating surface can be obtained, thereby improving the richness of the taste of the aerosol.

[0053] Table 1-1

[0054]

[0055] As shown in Table 1-1, the above embodiments adopt a kind of Figures 3-5The atomization core structure shown, i.e., the airflow passage 2521 is an inverted circular truncated cone. By adjusting the inclination angle α of the passage wall of the airflow passage 2521 compared to the central axis of the airflow passage 2521, the number of large-particle aerosol can be changed, the aerosol generation amount can be adjusted, and the vapor consumption ratio can be achieved, so as to realize different mouthfeel to meet the different needs of users. Among them, the large-particle proportion refers to the proportion of aerosol particles with a particle size greater than 5 μm in all aerosol particles. The present inventors have found that aerosol particles with a particle size greater than 5 μm are more easily perceived by the sense of taste, i.e., aerosol particles with a particle size greater than 5 μm are more easily deposited in the oral cavity. Therefore, the strength of the mouthfeel, especially the perception of sweet substances, can be adjusted by the scheme of the present application without changing the composition of the aerosol generating substrate. At the same time, since the aerosol generation amount and the vapor consumption ratio are improved, a more rich and full mouthfeel is further realized, while the energy consumption is reduced, meeting the environmental protection needs.

[0056] Please continue to refer to Figure 2 and Figure 3 , in some embodiments, the atomization core 25 includes a liquid guide 252 and a heating element 254. The liquid guide 252 is provided with an airflow passage 2521, and the heating element 254 is arranged inside the liquid guide 252 or on the passage wall of the airflow passage 2521. The heating element 254 is electrically connected to the battery assembly 40 and can heat up under the action of electric energy to heat the aerosol generating substrate.

[0057] Specifically, as shown in Figure 5 , the liquid guide 252 is cylindrical. In some embodiments, from one end having an air inlet 2521a to the other end having an air outlet 2521b, the outer side wall of the liquid guide 252 extends linearly along the first direction, and the outer diameter of the liquid guide 252 is equal everywhere.

[0058] As shown in Figure 6 , Figure 7 , in other embodiments, from one end having an air inlet 2521a to the other end having an air outlet 2521b, the outer side wall of the liquid guide 252 extends outwardly away from the central axis, and the cross-sectional area of the outer contour of the liquid guide 252 gradually increases. Specifically, in an embodiment, as shown in Figure 6 , the liquid guide 252 is a circular truncated cone with a small lower part and a large upper part. In another embodiment, as shown in Figure 7 , the liquid guide 252 is a four-prism truncated cone with a small lower part and a large upper part.

[0059] As shown in Figure 8 , Figure 9 , in other embodiments, from one end having an air inlet 2521a to the other end having an air outlet 2521b, the outer side wall of the liquid guide 252 extends inwardly toward the central axis, and the cross-sectional area of the outer contour of the liquid guide 252 gradually decreases. Specifically, in an embodiment, as shown inFigure 8 As shown, the liquid guide 252 is in the shape of a circular truncated cone with a larger bottom and a smaller top. In another embodiment, the liquid guide 252 is in the shape of a quadrangular truncated cone with a larger bottom and a smaller top. Figure 9 As shown, the liquid guide 252 is in the shape of a circular truncated cone with a larger bottom and a smaller top. In another embodiment, the liquid guide 252 is in the shape of a quadrangular truncated cone with a larger bottom and a smaller top.

[0060] It can be understood that the shape of the liquid guide 252 is not limited thereto, and the liquid guide 252 can be in the shape of a cylinder, a circular truncated cone, a quadrangular truncated cone, or other regular or irregular shapes. Since the cross-sectional area of the liquid guide 252 perpendicular to the first direction is positively correlated with the storage amount of the aerosol generating substrate, the larger the cross-sectional area of the liquid guide 252, the more aerosol generating substrate is stored, and thus the shape of the liquid guide 252 can be designed according to factors such as the composition of the aerosol generating substrate to meet different atomization requirements.

[0061] Further, the liquid guide 252 is formed of a porous material, and the porosity of the liquid guide 252 is preferably 35-80%, and the average pore size of the liquid guide 252 is preferably 3-50um, thereby having good adsorption to store the aerosol generating substrate.

[0062] Specifically, the liquid guide 252 is formed of one or more materials of alumina, silica, silicon nitride, silicate, hydroxyapatite, and silicon carbide, and the forming method of the liquid guide 252 can be injection molding, gel injection molding, dry pressing, or extrusion molding. It can be understood that the specific material forming the liquid guide 252 and the forming method are not limited thereto, and can be set as needed to meet different requirements.

[0063] The heating element 254 is formed of at least one of a heating wire, a heating mesh, and a heating film, and the heating element 254 can be formed of one or more metal alloy materials of iron-chromium alloy, iron-chromium-aluminum alloy, iron-chromium-nickel alloy, chromium-nickel alloy, titanium alloy, stainless steel alloy, and noble metal alloy. The heating element 254 can be attached or embedded to the channel wall of the airflow passage 2521 by screen printing or other methods, or can be embedded inside the liquid guide 252. It can be understood that the material forming the heating element 254 is not limited thereto, and can be set as needed to meet different requirements.

[0064] Further, the liquid guide 252 and the heating element 254 can be integrally formed by sintering, or the liquid guide 252 can be prepared first, and then the heating element 254 is formed by screen printing, direct attachment, or other methods.

[0065] The airflow passage 2521 of the above-mentioned atomizing core 25 extends linearly along the first direction, and thus the aerosol transmission speed is fast. More importantly, since the airflow passage 2521 has an outwardly expanding structure with gradually increasing cross-sectional area, the heating area of the heating surface formed by the passage wall is effectively increased, thereby improving the atomization efficiency of the atomizing core 25, reducing the condensation phenomenon, and improving the mist consumption ratio. Moreover, by adjusting the inclination angle of the passage wall of the airflow passage 2521, the number and proportion of sweet particles and aroma particles in the aerosol can be conveniently oriented and controlled, the taste of the aerosol is enriched, and the different needs of users are met.

[0066] The technical features of the above-mentioned embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0067] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An atomizer core, characterized in that: The atomizer core is provided with an air flow channel, the air flow channel having an air inlet and an air outlet arranged opposite to each other in a first direction, the atomizer core having a heating surface for heating an aerosol-generating substrate, the heating surface being formed on a channel wall of the air flow channel; Wherein, the cross-sectional area of ​​the air outlet is larger than the cross-sectional area of ​​the air inlet.

2. The atomizer core according to claim 1, characterized in that The cross-sectional area of ​​the air flow channel gradually increases from the end with the air inlet to the end with the air outlet.

3. The atomizer core according to claim 2, characterized in that The atomizer core has a central axis extending along a first direction. From an end having the air inlet to an end having the air outlet, at least a portion of the channel wall of the air flow channel is inclined outward away from the central axis and extends in a straight line.

4. The atomizer core according to claim 3, characterized in that From the end with the air inlet to the end with the air outlet, the inclination angle of the channel wall of the air flow channel relative to the central axis is greater than 0° and less than or equal to 45°.

5. The atomizer core according to claim 3, characterized in that A line connecting the center point of the air inlet and the center point of the air outlet coincides with the central axis.

6. The atomizer core according to claim 3, characterized in that A line connecting a center point of the air inlet and a center point of the air outlet extends obliquely relative to the central axis.

7. The atomizer core according to any one of claims 1 to 6, characterized in that: The atomizing core includes a liquid guiding member and a heating member. The liquid guiding member is provided with the air flow channel. The heating member is arranged inside the liquid guiding member or on the channel wall of the air flow channel.

8. The atomizer core according to claim 7, characterized in that: The atomizer core has a central axis extending along a first direction, from an end having the air inlet to an end having the air outlet, and an outer sidewall of the liquid guide extends along the first direction; or From the end with the air inlet to the end with the air outlet, the outer side wall of the liquid guide extends outwardly away from the central axis; or From the end with the air inlet to the end with the air outlet, the outer side wall of the liquid guide extends inwardly toward the central axis.

9. The atomizer core according to claim 7, characterized in that The liquid-conducting member is formed of a porous material; and / or The heating element is formed by at least one of a heating wire, a heating mesh and a heating film.

10. An atomizing device, characterized in that: The atomizer device comprises the atomizer core according to any one of claims 1 to 9, wherein the atomizer device further comprises a battery assembly, wherein the battery assembly is arranged at one end of the atomizer core and is electrically connected to the atomizer core, and the atomizer device further comprises an air outlet channel, wherein the air outlet channel connects the air outlet of the air flow channel with the external atmosphere.

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