EP4118984A1

EP4118984A1 - Atomization assembly and electronic atomization device

Info

Publication number: EP4118984A1
Application number: EP22184933.4A
Authority: EP
Inventors: Jingjing Yang; Weidong Zhou; Xinrong TAN
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2021-07-16
Filing date: 2022-07-14
Publication date: 2023-01-18
Also published as: CN113693289A

Abstract

An atomization assembly includes a shell (10) and an atomization base (11). The shell defines a liquid storage cavity (13) and a receiving cavity (15). The liquid storage cavity receives an aerosol-generating substrate. The atomization base is received in the receiving cavity. The atomization base defines an air-exchanging groove (112), a liquid storage groove (113), and a liquid guiding groove (114). An end of the air-exchanging groove is communicated with the liquid storage cavity. An end of the liquid guiding groove is communicated with the other end of the air-exchanging groove, the other end of the liquid guiding groove is communicated with the liquid storage groove. A width and/or a depth of the end of the liquid guiding groove near the air-exchanging groove is less than a width and/or a depth of the end of the liquid guiding groove near the liquid storage groove.

Description

TECHNICAL FIELD

The present disclosure relates to the field of atomizers, and in particular to an atomization assembly and an electronic atomization device.

BACKGROUND

The electronic atomization device produces aerosols by atomizing an aerosol-generating substrate. A user inhales the aerosol in order to obtain an active substance in the aerosol-generating substrate.
Usually the electronic atomization device is configured with an air-exchanging structure to introduce external air into a liquid storage cavity, such that the liquid storage cavity is under negative pressure, enabling the aerosol-generating substrate in the liquid storage cavity to be transported to an atomization core. The aerosol-generating substrate may be present in the air-exchanging structure, and when the aerosol-generating substrate in the air-exchanging structure are accumulated to reach a certain volume, the aerosol-generating substrate may leak out of the air-exchanging structure, resulting in liquid leakage. The liquid leaking out of the air-exchanging structure may enter an air outlet channel from a gap between an atomization base and a shell, causing inhalation leakage.

SUMMARY OF THE DISCLOSURE

According to the present disclosure, an atomization assembly and an electronic atomization device to solve the inhalation leakage, which is caused by liquid leakage of the air-exchanging structure.
According to a first aspect of the present disclosure, an atomization assembly includes a shell and an atomization base. The shell defines a liquid storage cavity and a receiving cavity. The liquid storage cavity is defined to receive an aerosol-generating substrate. The atomization base is received in the receiving cavity. An outer surface of an end of the atomization base near the liquid storage cavity defines an air-exchanging groove, an end of the air-exchanging groove is communicated with the liquid storage cavity. An outer surface of an end of the atomization base away from the liquid storage cavity defines a liquid storage groove. An outer surface of a middle portion of the atomization base defines a liquid guiding groove. An end of the liquid guiding groove is communicated with the other end of the air-exchanging groove, the other end of the liquid guiding groove is communicated with the liquid storage groove. A width of the end of the liquid guiding groove near the air-exchanging groove is less than a width of the end of the liquid guiding groove near the liquid storage groove; and/or a depth of the end of the liquid guiding groove near the air-exchanging groove is less than a depth of the end of the liquid guiding groove near the liquid storage groove.
According to a second aspect of the present disclosure, an electronic atomization device includes a power assembly and the atomization assembly according to any one of the above embodiments. The power assembly controls operations of the atomization assembly.
According to the present disclosure, the atomization assembly includes a shell and an atomization base. The shell defines a liquid storage cavity and a receiving cavity. The liquid storage cavity is defined to store the aerosol-generating substrate. The atomization base is received in the receiving cavity. An outer surface of an end of the atomization base near the liquid storage cavity defines an air-exchanging groove. An end of the air-exchanging groove is communicated to the liquid storage cavity. An outer surface of an end of the atomization base away from the liquid storage cavity defines a liquid storage groove. An outer surface of a middle portion of the atomization base defines a liquid guiding groove. An end of the liquid guiding groove is communicated to the other end of the air-exchanging groove. The other end of the liquid guiding groove is communicated to the liquid storage cavity. A width and/or a depth of the end of the liquid guiding groove near the air-exchanging groove is less than a width and/or a depth of the end of the liquid guiding groove near the liquid storage groove. In this way, liquid in the air-exchanging groove is guided to the liquid storage groove through the liquid guiding groove. Further, it is easier for the liquid to enter and to be stored in the liquid storage cavity, and liquid may not flow reversely out of the liquid storage groove easily. In this way, the liquid may be prevented from flowing into the air outlet channel, such that inhaling the leaked liquid may be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to illustrate the technical solutions of embodiments of the present disclosure more clearly, the accompanying drawings used in the description of the embodiments will be briefly introduced. Apparently, the following drawings are only some of the embodiments of the present disclosure, and other drawings may be obtained based on these drawings without any creative work by those skilled in the art.

FIG. 1 is a structural schematic view of an electronic atomization device according to an embodiment of the present disclosure.
FIG. 2a is a structural schematic view of an atomization assembly according to an embodiment of the present disclosure.
FIG. 2b is a cross sectional view of the atomization assembly shown in FIG. 2a, taken along the line A-A.
FIG. 3 is a structural schematic view of an atomization base in the atomization assembly shown in FIG. 2a.
FIG. 4 is a structural schematic view of an atomization bottom base in the atomization base shown in FIG. 3.
FIG. 5 is a cross sectional view of a liquid guiding groove in the atomization assembly, taken along a vertical direction, according to an embodiment of the present disclosure.
FIG. 6 is a cross sectional view of the atomization assembly shown in FIG. 2b, taken along the line B-B.
FIG. 7 is a cross sectional view of a liquid guiding groove in the atomization assembly, taken along a vertical direction, according to another embodiment of the present disclosure.
FIG. 8 is a structural schematic view of the atomization base shown in FIG. 3 from another view angle.
FIG. 9 is a structural schematic view of configuring the atomization base shown in FIG. 2b with a first sealing member.
FIG. 10 is an enlarged view of a portion in FIG. 2b.
FIG. 11 is a schematic view of engagement between the first sealing member and the shell shown in FIG. 10.
FIG. 12 is cross sectional view of the atomization assembly shown in FIG. 10, taken along the line C-C.
FIG. 13 is a structural schematic view of configuring the atomization core and the atomization base shown in FIG. 10.
FIG. 14 is structural schematic view of a second sealing member shown in FIG. 13.
FIG. 15 is a perspective view of a power assembly according to an embodiment of the present disclosure.
FIG. 16 is a cross sectional view of the power assembly shown in FIG. 15, taken along the line A-A.
FIG. 17 is a cross sectional view of a portion of the power assembly according to an embodiment of the present disclosure.
FIG. 18 is a structural schematic view of some components in the power assembly after being assembled.
FIG. 19 is a structural schematic view of a second circuit board, a reinforcement member and a plurality of light emitting elements after being assembled.
FIG. 20 is a perspective view of a bracket according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

Technical solutions in the embodiments of the present disclosure will be clearly and completely described below by referring to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only some of, but not all of, the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by any ordinary skilled person in the art without creative work shall fall within the scope of the present disclosure.
The following description is provided for illustration instead of limitation. Details, such as particular system structures, interfaces, techniques and the like, are illustrated in order to provide a thorough understanding of the present disclosure.
The terms "first", "second" and "third" in the present disclosure are used for descriptive purposes only and shall not be interpreted as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined by the "first", the "second", the "third" may explicitly or implicitly include at least one of the features described. In the present disclosure, "plurality" means at least two, such as two, three, and so on, unless otherwise expressly and specifically limited. All directional indications (such as up, down, left, right, front, rear ......) in the embodiments are used only to explain relative positions, relative movements, and the like, of the components with respect to each other at a particular pose (as shown in the attached drawings). When the particular pose changes, the directional indications may change accordingly. The terms "including" and "having", and any variation thereof, in the present disclosure are used to cover non-exclusive inclusion. For example, a process, a method, a system, a product or an apparatus including a series of operations or units is not limited to the listed operations or units, but optionally also includes operations or units not listed, or optionally also includes other operations or components that are inherently included in the process, the method, the system, the product, and the apparatus.
The term "embodiments" mean that particular features, structures or properties described in an embodiment may be included in at least one embodiment of the present disclosure. The presence of the phrase in various sections in the specification does not necessarily mean a same embodiment, nor a separate or an alternative embodiment that is mutually exclusive with other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein may be combined with other embodiments.
The present disclosure is described in detail below by referring to the accompanying drawings and embodiments.
FIG. 1 is a structural schematic view of an electronic atomization device according to an embodiment of the present disclosure.
An electronic atomization device may be used for the atomizing a liquid substrate. The electronic atomization device includes an atomization assembly 1 and a power supply assembly 2 connected to the atomization assembly 1. The atomization assembly 1 is configured to store an aerosol-generating substrate and to atomizing the aerosol-generating substrate to generate an aerosol that can be inhaled by a user. The aerosol-generating substrate may be a liquid substrate such as a medicinal solution, a plant herb or leaf liquid, and so on. The atomization assembly 1 may be applied specifically in various fields, such as in the medical field, in the electronic aerosolization field, and so on. The power supply assembly 2 includes components, such as a battery, an airflow sensor, a PCB, a controller, and so on. The battery is configured to supply power to the atomization assembly 1 to enable the atomization assembly 1 to atomize the aerosol-generating substrate to generate the aerosol. The airflow sensor is configured to detect a change in an airflow in the electronic atomization device. The controller controls the atomization assembly 1 to operate or stop operating, based on the change in the airflow detected by the airflow sensor and a predetermined program. The atomization assembly 1 and the power supply assembly 2 may be configured as an integral one-piece structure, or may be detachably connected with each other. Configuration between the atomization assembly 1 and the power supply assembly 2 can be determined based on the specific demands.
As shown in FIGS. 2a, 2b, 3, and 4, FIG. 2a is a structural schematic view of the atomization assembly according to an embodiment of the present disclosure, FIG. 2b is a cross sectional view of the atomization assembly shown in FIG. 2a, taken along the line A-A, FIG. 3 is a structural schematic view of an atomization base in the atomization assembly shown in FIG. 2a, and FIG. 4 is a structural schematic view of an atomization bottom base in the atomization base shown in FIG. 3.
The atomization assembly 1 includes a shell 10, an atomization base 11 and an atomization core 12. The shell 10 defines a liquid storage cavity 13, an air outlet channel 14 and a receiving cavity 15. The liquid storage cavity 13 extends around the air outlet channel 14. The liquid storage cavity 13 is defined to store the aerosol-generating substrate. The atomization base 11 is received in the receiving cavity 15. The atomization base 11 defines a mounting cavity 110, and the atomization core 12 is received in the mounting cavity 110. That is, the atomization core 12 and the atomization base 11 are received in the receiving cavity 15. An atomization cavity 111 is defined between an atomization surface 121 of the atomization core 12 and a cavity wall of the mounting cavity 110. The atomization cavity 111 is communicated with the air outlet channel 14. The atomization core 12 is configured to atomize the aerosol-generating substrate in the liquid storage cavity 13 to generate the aerosol. An end of the shell 10 has an inhalation port 17 communicating with the air outlet channel 14. The air outlet channel 14 is communicating with the atomization cavity 111. The user inhales the atomized aerosol of the atomization core 12 through the inhalation port 17.
The atomization base 11 is usually arranged with an air-exchanging structure to introduce external air into the liquid storage cavity 13 to prevent the liquid storage cavity 13 from being in an excessively negative pressure, such that air pressure balance between the liquid storage cavity 13 and the external atmosphere may be achieved. In this way, the aerosol-generating substrate in the liquid storage cavity 13 may be transported to the atomization core 12 easily. The air-exchanging structure may usually be a micro groove directly or indirectly communicated with the liquid storage cavity 13, and the aerosol-generating substrate may leak into the micro groove of the air-exchanging structure, such that the aerosol-generating substrate is present in the air-exchanging structure. When the aerosol-generating substrate in the air-exchanging structure is accumulated to reach a certain volume, the aerosol-generating substrate may leak out of the air-exchanging structure, resulting in liquid leakage. While inhaling through the atomization assembly 1, liquid spraying may occur on the atomization surface 121 of the atomization core 12, and the sprayed liquid may be accumulated in the atomization cavity 111. Hot air in the air outlet channel 14 or the atomization cavity 111 may be cooled to generate a condensate. When the condensate is accumulated to reach a certain volume, the condensate may leak, resulting in the liquid leakage. In other words, a source of leakage from the atomization assembly 1 include leakage from the air-exchanging structure of the liquid storage cavity 13, the spraying liquid from the atomization surface 121 of the atomization core 12, and condensate in the air outlet channel 14 or the atomization cavity 111. Leaked liquid may be inhaled into the user's mouth, causing poor user experience. The leaked liquid may leak into the power supply assembly 2, causing corrosion to the power supply assembly 2 and affecting the service life of the power supply assembly 2.
In order to solve the problems caused by liquid leakage, in the art, a liquid storage structure may be arranged on a bottom wall of the atomization cavity 111 for absorbing the leaked liquid. However, since the liquid storage structure is directly or indirectly communicated with the atomization cavity 111 or the air outlet channel 14, the leaked liquid may still be inhaled out in the inhalation process, resulting in the inhalation of the leaked liquid. Therefore, the present disclosure provides an atomization assembly 1, which can efficiently and reliably absorb the leaked liquid, preventing the inhalation of the leaked liquid and reducing the impact on the power supply assembly 2 caused by liquid leakage.
The atomization base 11 of the present disclosure has at least one liquid collection cavity 16. The liquid collection cavity 16 is defined on a side wall of the atomization cavity 111 and is communicated with the atomization cavity 111. The liquid collection cavity 16 is defined to collect the leaked liquid coming from the spraying liquid from the atomization surface 121 of the atomization core 12 and the condensate from the air outlet channel 14 or the atomization cavity 111. A liquid absorption member 161 is received in the liquid collection cavity 16. The liquid absorption member 161 is configured to absorb the leaked liquid and store the leaked liquid sufficiently. By storing the leaked liquid in the liquid collection cavity 16 and in the liquid absorption member 161, a risk of the leaked liquid being inhaled into the user's mouth (inhaling the leaked liquid) or an impact on the power supply assembly 2 caused by the leaked liquid may be fully reduced. The liquid absorption member 161 is made of a porous and loose material, such as liquid-absorbing cotton, sponge, porous ceramic, and so on, capable of storing and maintaining the liquid. Further, the liquid collection cavity 16 is defined on the side wall of the atomization cavity 111. A space in a width direction of the atomization assembly 1 is utilized effectively without increasing a size of the atomization assembly 1 or a size of the atomization base 11, such that the leaked liquid may be absorbed efficiently and reliably. It shall be understood that the liquid collection cavity 16 may be in a millimeter size and has a large liquid absorption capacity.
In detail, the atomization base 11 includes an atomization top base 115 and an atomization bottom base 116. The atomization bottom base 116 is arranged on a side of the atomization top base 115 away from the liquid storage cavity 13. The atomization top base 115 defines two liquid flowing channels 1151. The two liquid flowing channels 1151 are symmetrically defined on two sides of the air outlet channel 14. One of the two liquid flowing channels 1151 is defined on a first side of the air outlet channel 14, and the other one of the two liquid flowing channels 1151 is defined on a second side of the air outlet channel 14 opposite to the first side. Each of the two liquid flowing channels 1151 is communicated with the liquid storage cavity 13. The aerosol-generating substrate in the liquid storage cavity 13 enters the atomization core 12 through the liquid flowing channel 1151, and is heated and atomized by the atomization core 12. As shown in FIGS. 2b, 3 and 4, the atomization base 116 has a recess 1161. A wall of the recess 1161 and the atomization top base 115 cooperatively define a mounting cavity 110. The atomization core 12 is received in the mounting cavity 110. The atomization core 12 includes a porous liquid guide member and a heating member. The heating member is arranged on a surface of the porous liquid guide member. The surface of the porous liquid guide member arranged with the heating member is the atomization surface 121. The porous liquid guide member uses a capillary force to guide the aerosol-generating substrate to flow to the atomization surface 121, and the aerosol-generating substrate is heated and atomized by the heating member arranged on the atomization surface 121 to generate the aerosol. An atomization cavity 111 is defined between the atomization surface 121 of the atomization core 12 and a bottom surface of the recess 1161. A surface of a side wall of the recess 1161 facing the atomization top base 115 defines a blind hole 162. A wall of the blind hole 162 and the atomization top base 115 cooperatively define the liquid collection cavity 16. The atomization surface 121 of the atomization core 12 faces away from the inhalation port 17, and that is, the atomization surface 121 of the atomization core 12 faces downwardly.
In another embodiment, an end face of the atomization top base 115 near the atomization bottom base 116 is a flat face. The end face of the atomization top base 115 near the atomization bottom base 116 and a wall of the blind hole 162 in the side wall of the recess 1161 facing the atomization top base 115 cooperatively define the liquid collection cavity 16. In another embodiment, a surface of the atomization top base 115 near the atomization bottom base 116 defines a blind hole 163. A wall of the blind hole 163 and the wall of the blind hole 162 cooperatively define the liquid collection cavity 16 (as shown in FIG. 2b). A shape and a size of a cross section of the blind hole 163 may be the same as or different from that of a cross section of the blind hole 162. Shape and sizes of cross sections of the blind holes can be determined based on actual demands. In some embodiments, an area of the cross section of the blind hole 163 is less than that of the cross section of the blind hole 162. By defining the blind hole 163 on the surface of the atomization top base 115 near the atomization bottom base 116, the wall of the blind hole 163 and the wall of the blind hole 162 cooperatively define the liquid collection cavity 16, enabling a liquid storage capacity of the liquid collection cavity 16 to be as large as possible, optimally preventing the leaked liquid from flowing to reach the power supply assembly 2.
Further, as shown in FIG. 4, each of two opposite side walls of the recess 1161 defines the blind hole 162. Walls of the two blind holes 162 and the atomization top base 115 cooperatively define two liquid collection cavities 16. Actual demands may determine whether the surface of the atomization top base 115 near the atomization bottom base 116 defines the blind hole 163. That is, the two liquid collection cavities 16 are defined on opposite sides of the atomization cavity 111 in a width direction of the atomization bottom base 116 (i.e., one side of the atomization cavity 111 defines one of the two liquid collection cavities 16, and the opposite side of the atomization cavity 111 defines the other one of the two liquid collection cavities 16). In some embodiments, two liquid collection cavities 16 are defined symmetrically with each other and are defined on opposite sides of the atomization cavity 111 in the width direction of the atomization bottom base 116. The width direction of the atomization base 116 is the same as the width direction of the atomization assembly 1.
It shall be understood that a shape and a size of the liquid absorption member 161 are adaptive to a shape and a size of the liquid collection cavity 16, such that the liquid absorption member 161 fills the liquid collection cavity 16. Shapes and sizes of the liquid absorption member 161 and the liquid collection cavity 16 may be designed based on demands, as long as the liquid absorption member 161 and the liquid collection cavity 16 can absorb the leaked liquid. In some embodiments, a cross section of the liquid collection cavity 16 and a cross section of the liquid absorption member 161 may be equilateral polygonal. In some embodiments, the cross section of the liquid collection cavity 16 and/or the cross section of the liquid absorption member 161 may be circular. For a product arranged with the liquid absorption member 161 having the circular cross section, a structure may be simple, less waste may be generated while manufacturing, and a processing efficiency may be high. When the liquid absorption member 161 having the circular cross section is assembled into the liquid collection cavity 16, a deliberate aligning process and a deliberate avoidance process may not be performed, the manufacturing process may be simple, and an assembly cost may be reduced. In addition, in a same structural space, a liquid storage volume of the liquid absorption member 161 having the circular cross section may be significantly greater than that of the liquid absorption member 161 in a sheet.
A top surface of the liquid collection cavity 16 is not lower than the atomization surface 121 of the atomization core 12; and/or a bottom surface of the liquid collection cavity 16 is not higher than a bottom surface of the atomization cavity 111. In this way, a height of the liquid collection cavity 16 is greater than a height of the atomization cavity 111, such that the liquid collection cavity 16 has a higher capacity of storing the leaked liquid. The bottom surface of the liquid collection cavity 16 is not higher than the bottom surface of the atomization cavity 111, enabling the leaked liquid in the atomization cavity 111 to enter the liquid collection cavity 16 easily. The top surface of the liquid collection cavity 16 is not lower than the atomization surface 121 of the atomization core 12. In this way, when the end face of the atomization top base 115 near the atomization bottom base 116 is flat, the end face of the atomization top base 115 near the atomization bottom base 116 and the wall of the blind hole 162 cooperatively define the liquid collection cavity 16. Alternatively, the blind hole 163 defined on the surface of the atomization top base 115 near the atomization bottom base 116 and the blind hole 162 are communicated with each other and cooperatively serve as the liquid collection cavity 16. Regardless of how the liquid collection cavity 16 is defined, the height of the liquid collection cavity 16 is always greater than or equal to the height of the atomization cavity 111, such that the liquid storage capacity of the liquid collection cavity 16 is increased. In the present disclosure, the bottom surface of the liquid collection cavity 16 is not higher than the bottom surface of the atomization cavity 111, and the top surface of the liquid collection cavity 16 is not lower than the atomization surface 121 of the atomization core 12. A space in a length direction of the atomization cavity 111 is fully utilized to increase the liquid storage capacity of the liquid collection cavity 16 as much as possible, and a space in a thickness direction of the atomization assembly 1 occupied by the liquid collection cavity 16 is reduced, such that the electronic atomization device may be light and thin. It shall be understood that the length direction of the atomization cavity 111 is the same as the length direction of the atomization assembly 1. In some embodiments, an opening of the blind hole 162 is not lower than the atomization surface 121 of the atomization core 12, and the bottom surface of the blind hole 162 is lower than the bottom surface of the atomization cavity 111.
In the present disclosure, a common side wall of the liquid collection cavity 16 and the atomization cavity 111 defines a first through hole 164 communicating with the liquid collection cavity 16 and the atomization cavity 111, such that the leaked liquid in the atomization cavity 111 is guided into the liquid collection cavity 16. A bottom surface or a lowest point of a wall of the first through hole 164 is not higher than a bottom surface of the atomization cavity 111. Based on the principle that liquid flows from higher to lower in a natural state, the leaked liquid in the atomization cavity 111 may be guided to the liquid collection cavity 16 rapidly. A position of a top surface or a highest point of the first through hole 164 is not limited by the present disclosure, as long as the liquid collection cavity 16 is communicated with the atomization cavity 111. A size of the first through hole 164 in a direction perpendicular to the length of the atomization assembly 1 is in a range of 0.5mm-1.0mm. In some embodiments, the size of the first through hole 164 may be 0.8mm. It shall be understood that a recess or a notch, which is communicated with the liquid collection cavity 16 and the atomization cavity 111, may be defined in the common side wall of the liquid collection cavity 16 and the atomization cavity 111, as long as the liquid collection cavity 16 is communicated with the atomization cavity 111. The recess or the notch may be determined based on demands. When the common side wall of the liquid collection cavity 16 and the atomization cavity 111 defines the notch communicating with the liquid collection cavity 16 and the atomization cavity 111, a bottom surface of the notch is lower than the bottom surface of the atomization cavity 111, and a size of the notch along the length direction of the atomization assembly 1 is the same as the height of the blind hole 162. In this way, when a large amount of leaked liquid is accumulated in the atomization cavity 111, the leaked liquid may be quickly guided into the liquid collection cavity 16.
As shown in FIG. 3, an outer surface of an end of the atomization base 11 near the liquid storage cavity 13 defines an air-exchanging groove 112. An end of the air-exchanging groove 112 is communicated with the liquid storage cavity 13 to provide air exchange for the liquid storage cavity 13, such that air pressure balance between the liquid storage cavity 13 and the external atmosphere may be achieved. An outer surface of an end of the atomization base 11 away from the liquid storage cavity 13 defines a liquid storage groove 113. An outer surface of a middle portion of the atomization base 11 defines a liquid guiding groove 114. An end of the liquid guiding groove 114 is communicated with the other end of the air-exchanging groove 112, and the other end of the liquid guiding groove 114 is communicated with the liquid storage groove 113. Since some aerosol-generating substrate leaking from the liquid storage cavity 13 may be in the air-exchanging groove 112, the aerosol-generating substrate in the air-exchanging groove 112 may leak after being accumulated to reach a certain volume, resulting in the liquid leakage. The leaked liquid in the air-exchanging groove 112 is guided into the liquid storage cavity 113 through the liquid guiding groove 114, the leaked liquid is stored in the liquid storage cavity 113, preventing the impact on the power supply assembly 2 caused by the leaked liquid. In an embodiment, a side wall of the liquid collection cavity 16 defines a second through hole 165 (as shown in FIG. 2b). The second through hole 165 communicating the liquid storage cavity 113 with the liquid collection cavity 16, such that the second through hole 165 guides the leaked liquid to flow from the liquid storage cavity 113 into the liquid collection cavity 16, and the leaked liquid is absorbed by the liquid absorption member 161 in the liquid collection cavity 16. In this way, inhaling the leaked liquid may be prevented, and the leaked liquid may be prevented from entering the power supply assembly 2, performance of the power supply assembly 2 may not be affected. The second through hole 165 and the first through hole 164, which are defined on the side wall of the blind hole 162, may be misaligned. A cross section of the second through hole 165 can be circular, squared or stripped, which may be determined based on demands. An area of the cross section of the second through hole 165 is 0.2-0.5 mm². In some embodiments, the cross section of the second through hole 165 is stripped having a dimension of 0.4 mm ^∗ 0.8 mm. A position of the side wall of the liquid collection cavity 16 for defining the second through hole 165 is determined based on the demands. In some embodiments, the second through hole 165 defined at a middle portion of the side wall of the liquid collection cavity 16 in the height direction. That is, the second through hole 165 is not at an uppermost position or a lowermost position of side wall of the liquid collection cavity 16. It shall be understood that, the second through hole 165 is communicated with the liquid storage groove 113 and the liquid collection cavity 16, and most of the leaked liquid in the liquid storage groove 113 comes from the air-exchanging groove 112 on the atomization top base 115. Therefore, defining the second through hole 165 in the middle portion avoids a structural conflict with the first through hole 164 while the liquid is being guided. At the same time, the second through-hole 165 being misaligned with the first through hole 164 allows the leaked liquid to be guided into the liquid absorption member 161 in the liquid collection cavity 16 better and quickly, reducing a possibility of liquid leakage caused by a portion of the liquid absorption member 161 being saturated by the liquid.
As shown in FIG. 3, in detail, the air-exchanging groove 112 is defined on the outer surface of the atomization top base 115, and the liquid guiding groove 114 and the liquid storage groove 113 are defined on the outer surface of the atomization bottom base 116. A width and/or a depth of an end of the liquid guiding groove 114 near the air-exchanging groove 112 is less than a width and/or a depth of an end of the liquid guiding groove 114 near the liquid storage groove 113. That is, a width and/or a depth of the liquid guiding groove 114 increases in a gradient along a direction from the air-exchanging groove 112 to the liquid storage groove 113, and details of the gradient may be determined based on demands. A width of an end of the liquid guiding groove 114 away from the liquid storage cavity 13 is 0.2mm-1.5mm, and a depth of the end of the liquid guiding groove 114 away from the liquid storage cavity 13 is 0.2mm-1.5mm. A width of an end of the liquid guiding groove 114 near the liquid storage groove 13 is 0.2mm-1.5mm, and a depth of the end of the liquid guiding groove 114 near the liquid storage groove 13 is 0.2mm-1.5mm. That is, the width of the liquid guiding groove 114 is 0.2mm-1.5mm, and the depth of the liquid guiding groove 114 is 0.2mm-1.5mm. In some embodiments, the width of the end of the liquid guiding groove 114 near the liquid storage cavity 13 is 0.4mm, and the depth of the end of the liquid guiding groove 114 near the liquid storage cavity 13 is 0.3mm.
A side of a cross section of the liquid guiding groove 114, taken along a vertical direction, is parallel to the length direction of the atomization base 11. In this way, the liquid guiding groove 114 may be shaped easily, and the liquid guiding groove 114 may be smoothly transitioned with the shell 10, improving assembly reliability and yield.
In the present disclosure, the width and/or the depth of the end of the liquid guiding groove 114 near the air-exchanging groove 112 is less than that of the end of the liquid guiding groove 114 near the liquid storage groove 113. When the liquid in the air-exchanging groove 112 on the outer surface of the atomization top base 115 flows to the gap between the atomization top base 115 and the atomization bottom base 116, the liquid guiding groove 114 on the atomization bottom base 116 may guide the liquid to the liquid storage groove 113, avoiding the leaked liquid generated in the air-exchanging groove 112 from flowing along the gap between the atomization base 11 and the shell 10 to reach the air outlet channel 14, such that inhaling the leaked liquid may be prevented. Since the wall of the liquid guiding groove 114 is inclined, the liquid may easily enter the liquid storage groove 113 for storage and may not flow reversely out of the liquid storage groove 113.
As shown in FIGS. 5-7, FIG. 5 is a cross sectional view of a liquid guiding groove in the atomization assembly, taken along a vertical direction, according to an embodiment of the present disclosure, FIG. 6 is a cross sectional view of the atomization assembly shown in FIG. 2b, taken along the line B-B, and FIG. 7 is a cross sectional view of a liquid guiding groove in the atomization assembly, taken along a vertical direction, according to another embodiment of the present disclosure.
In an embodiment, the width of the liquid guiding groove 114 gradually increases in a direction away from the liquid storage cavity 13. That is, the width of the liquid guiding groove 114 gradually increases in a direction extending from the air-exchanging groove 112 to the liquid storage groove 113 (a gradient that the width of the liquid guiding groove 114 increases in the direction from the air-exchanging groove 112 to the liquid storage groove 113 may be small). The side of the cross section of the liquid guiding groove 114, taken along the vertical direction, is parallel to the length direction of the atomization base 11. The vertical cross section of the liquid guiding groove 114 is taken by a plane parallel to the width direction of the atomization assembly 1. The length direction of the atomization base 11 is the same as the length direction of the atomization assembly 1. In some embodiments, a shape of the vertical cross section of the liquid guiding groove 114 is a right triangle or a right trapezoid (as shown in FIG. 5). The depth of the liquid guiding groove 114 gradually increases in a direction approaching to a central axis of the atomization assembly 1. A lateral cross section of the liquid guiding groove 114 is triangular (as shown in FIG. 5 and FIG. 6). That is, the depth of the liquid guiding groove 114 gradually increases from zero in the width direction and along the direction approaching to the central axis of the atomization assembly 1. In the present embodiment, an overall structure of the liquid guiding groove 114 is a trigonal frustum. Configuring the liquid guiding groove 114 as the trigonal frustum allows the liquid guiding groove 114 to be shaped easily and allows a transition between the liquid guiding groove 114 and the shell 10 to be smooth, improving assembly reliability and yield. It shall be understood that the lateral cross section of the liquid guiding groove 114 can be isosceles trapezoid, semi-circular, and so on. The vertical cross section of the liquid guiding groove 114 can be in any other shape. Shapes of the vertical cross section and the lateral cross section of the liquid guiding groove 114 can be determined based on demands.
In another embodiment, as shown in FIG. 7, the liquid guiding groove 114 includes a plurality of liquid guiding sub-grooves in various widths. For example, the liquid guiding groove 114 includes a first liquid guiding sub-groove 1141 and a second liquid guiding sub-groove 1142. The second liquid guiding sub-groove 1142 locates at an end of the first liquid guiding sub-groove 1141 away from the liquid storage cavity 13. A shape and an area of a lateral cross section of the first liquid guiding sub-groove 1141 is invariable. A shape and an area of a lateral cross section of the second liquid guiding sub-groove 1142 is invariable. The area of the lateral cross section of the second liquid guiding sub-groove 1142 is greater than the area of the lateral cross section of the first liquid guiding sub-groove 1141 (a gradient that the width of the liquid guiding groove 114 increases along the direction from the air-exchanging groove 112 to the liquid storage groove 113 is large). A side of the vertical cross section of the first liquid guiding sub-groove 1141 coincides with a side of the vertical cross section of the second liquid guiding sub-groove 1142. The coinciding side is parallel to the length direction of the atomization base 11. The vertical cross section of the first liquid guiding sub-groove1141 and the vertical cross section of the second liquid guiding sub-groove 1142 are taken by a plane parallel to the width direction of the atomization assembly 1. In the present embodiment, a depth of the first liquid guiding sub-groove 1141 and a depth of the second liquid guiding sub-groove 1142 both increase gradually from zero in the width direction and along the direction approaching to the central axis of the atomization assembly 1. In this way, the transition between the liquid guiding groove 114 and the shell 10 may be smooth, improving assembly reliability and yield.
As shown in FIG. 8, FIG. 8 is a structural schematic view of the atomization base shown in FIG. 3 from another view angle.
An end of the air-exchanging groove 112 is communicated with the liquid storage cavity 13, and the other end of the air-exchanging groove 112 is communicated with the liquid guiding groove 114. In this way, when the liquid storage cavity 13 is under negative pressure, external air may be introduced into the liquid storage cavity 13, such that air pressure balance between the liquid storage cavity 13 and the outside atmosphere may be achieved, allowing the aerosol-generating substrate to be transferred to the atomization core 12 smoothly. The air-exchanging groove 112 includes a first air-exchanging sub-groove 1121 and a second air-exchanging sub-groove 1122. An end of the first air-exchanging sub-groove 1121 is communicated with the liquid storage cavity 13, and the other end of the first air-exchanging sub-groove 1121 is communicated with an end of the second air-exchanging sub-groove 1122. The other end of the second air-exchanging sub-groove 1122 is communicated with the liquid guiding groove 114. A vertical cross section of the first air-exchanging sub-groove 1121 may be stripped or in other shapes, as long as the first air-exchanging sub-groove 1121 is communicated with the liquid storage cavity 13. The second air-exchanging sub-groove 1122 includes a plurality of recesses parallel to each other. The plurality of parallel recesses are communicated with each other from end to end. That is, the second air-exchanging sub-groove 1122 is rectangular or "Z" shaped. Of course, the second air-exchanging sub-groove 1122 may be in any bending shape. An extending direction of the first air-exchanging sub-groove 1121 is perpendicular to an extending direction of the recesses of the second air-exchanging sub-groove 1122. A specific structure of the air-exchanging groove 112 can be determined based on demands, as long as the air-exchanging groove 112 is capable of exchanging air for the liquid storage cavity 13 and allowing the liquid storage cavity 13 to be communicated with liquid guiding groove 114. A width of the air-exchanging groove 112 is 0.2mm-1.5mm, and a depth of the air-exchanging groove 112 is 0.2mm-1.5mm. In some embodiments, the width of the air-exchanging groove 112 is 0.3mm, and the depth of the air-exchanging groove 112 is 0.4mm. It shall be understood that a first connection groove (not shown in the figure) locates at the end of the second air-exchanging sub-groove 1122 near the liquid guiding groove 114, and the first connection groove enables the air-exchanging groove 112 to be communicated with the liquid guiding groove 114.
The liquid storage groove 113 includes a plurality of liquid storage sub-grooves 1131. The plurality of liquid storage sub-grooves 1131 are parallel to each other and are connected with each other from end to end. That is, the liquid storage groove 113 is "Z"-shaped. An end of one of the plurality of liquid storage sub-grooves 1131 near the liquid guiding groove 114 is communicated with a second connection groove (not shown in the figure). The second connection groove enables the liquid guiding groove 114 to be communicated with the liquid storage groove 113.
It shall be understood that the atomization top base 115 and the atomization bottom base 116 may be integrally formed as one piece or removably connected with each other. When the atomization top base 115 and the atomization bottom base 116 are integrally formed as one piece, the air-exchange groove 112, the liquid guiding groove 114 and the liquid storage groove 113 may be defined and communicated with each other by performing one step of processing.
FIG. 9 is a structural schematic view of configuring the atomization base shown in FIG. 2b with a first sealing member.
As shown in FIG. 2 and FIG. 9, the atomization assembly 1 further includes a first sealing member 18. The first sealing member 18 includes a top wall and a side wall. The top wall of the first sealing member 18 is arranged on a top face of the atomization top base 115. The side wall of the first sealing member 18 is arranged on an outer surface of the atomization top base 115. That is, the top wall of the first sealing member 18 is arranged on a top face of the atomization base 11. The side wall of the first sealing member 18 is arranged on an outer face of the atomization base 11. In addition, the side wall of the first sealing member 18 covers the air-exchanging groove 112 on the outer surface of the atomization top base 115. That is, the side wall of the first sealing member 18 and a wall of the air-exchanging groove 112 cooperatively define an air-exchanging channel (not shown in the figure). A gap between an end face of the side wall of the first sealing member 18 near the atomization bottom base 116 and a top face of the atomization bottom base 116 is greater than or equal to 0.1mm and less than or equal to 0.3mm. In some embodiments, the gap is 0.25mm. It shall be understood that the gap between the first sealing member 18 and the top face of the atomization bottom base 116 further ensures air exchanging through the air-exchanging channel, such that an air-exchanging channel surrounding the atomization base 11 is defined, preventing poor air exchanging caused by blockage due to liquid leakage.
As shown in FIG. 2 and FIG. 9, the recess 1161 on the atomization bottom base 116 has a first side wall, a second side wall opposite to the first side wall, a third side wall and a fourth side wall, and each of the third side wall and the fourth side wall is connected to the first side wall and the second side wall. The blind hole 162 is defined on the first side wall and the second side wall of the recess 1161. A notch (not shown in the figure) is defined on each of the third side wall and the fourth side wall of the recess 1161. A surface of the atomization top base 115 near the atomization bottom base 116 defines a recess (not shown in the figure). The recess on the atomization top base 115 and the recess 1161 are communicated and cooperatively serve as the mounting cavity 110, i.e., a wall of the recess on the atomization top base 115 and the wall of the recess 1161 cooperatively define the mounting cavity 10. The recess on the atomization top base 115 includes a first side wall and a second side wall opposite to the first side wall, a third side wall connected to the first side wall and the second side wall, and a fourth side wall connected to the first side wall and the second side wall. The blind hole 163 is defined on the first side wall and the second side wall of the recess on the atomization top base 115. A notch (not shown in the figure) is defined on each of the third side wall and the fourth side wall of the recess on the atomization top base 115. The notches on the third side wall and the fourth side wall of the recess on the atomization top base 115 correspond to the notches on the third side wall and the fourth side wall of the recess 1161. Walls of the notches on the atomization top base 115, walls of the notches on the atomization bottom base 116, and the shell 10 cooperatively define an airflow channel 19. That is, the atomization core 12 is partially exposed to the airflow channel 19 through the notch in the atomization top base 115 and the notch in the atomization bottom base 116, allowing the external air to carry the aerosol generated by the atomization core 12 to flow through two sides of the atomization core 12 into the air outlet channel 14.
In order to further prevent inhaling the leaked liquid, which is resulted from the leaked liquid flowing along the gap between the atomization base 11 and the shell 10 to reach the airflow channel 19 and further enter the air outlet channel 14, a vertical rib 181 is arranged on the side wall of the first sealing member 18, and/or a tab 1152 is arranged on the atomization top base 115. That is, the vertical rib 181 on the side wall of the first sealing member 18 is configured to prevent the leaked liquid from flowing into the airflow channel 19. The tab 1152 on the atomization top base 115 is configured to prevent the leaked liquid from flowing into the airflow channel 19. In addition, the tab 1152 can provide a structural support for the shell 10, improving rigidity of the shell 10, preventing structural rigidity of an ultra-thin product from being reduced, and improving the user experience.
Two vertical ribs 181 are arranged on two sides of the first sealing member 18 corresponding to the airflow channel 19. The vertical rib 181 extends along a height direction of the side wall of the first sealing member 18. An angle between the extending direction of the vertical rib 181 and the central axis of the atomization assembly 1 is less than 90 degrees. That is, the extending direction of the vertical rib 181 is not parallel to the thickness direction or the width direction of the atomization assembly 1. In some embodiments, the extending direction of the vertical rib 181 is parallel to the extending direction of the central axis of the atomization assembly 1. That is, an angle between the extending direction of the vertical rib 181 and the extending direction of the central axis is 0 degree. Further, the vertical rib 181 contacts the shell 10. In some embodiments, a length of the vertical rib 181 in the height direction of the side wall of the first sealing member 18 is equal to a height of the side wall of the first sealing member 18. The height direction of the side wall of the first sealing member 18 is the same as the length direction of the atomization assembly 1. In a specific embodiment, a portion of the airflow channel 19, which communicates the air outlet channel 14 with the atomization cavity 111, refers to two channels located on two sides in the thickness direction of the atomization assembly 1. Therefore, two vertical ribs 181 need to be arranged corresponding to one channel and on two sides of the corresponding channel. That is, in the present embodiment, four vertical ribs 181 are arranged.
The atomization top base 115 is arranged with two tabs 1152 corresponding to two sides of the airflow channel 19. Each tab 1152 extends along a height direction of the atomization top base 115. In some embodiments, the tab 1152 extends along an edge line of the notch on the atomization top base 115. In some embodiments, two tabs 1152 are arranged, one of the two tabs 1152 extends along a first edge line of the notch on the atomization top base 115, and the other one of the two tabs 1152 extends along a second edge line of the notch opposite to the first edge line. It shall be understood that an angle between the extending direction of the tab 1152 and the extending direction of the central axis of the atomization assembly 1 is less than 90 degrees. That is, the extending direction of the tab 1152 is not parallel to the thickness direction or the width direction of the atomization assembly 1. In some embodiments, the angle between the extending direction of the tab 1152 and the length direction of the atomization assembly 1 is greater than 0 degree and less than 90 degrees, such that the tab 1152 supports the shell 10 in the length direction and in the width direction of the atomization assembly 1 when the tab 1152 contacts the shell 10. In this way, an overall strength and rigidity of the shell 10 or the atomization assembly 1 is improved. A gap between the tab 1152 and the shell 10 is 0mm-0.03 mm. The height direction of the atomization top base 115 is the same as the length direction of the atomization assembly 1.
In an embodiment, the portion of the airflow channel 19, which communicates the air outlet channel 14 with the atomization cavity 111, refers to two channels located on two sides in the thickness direction of the atomization assembly 1. Therefore, two tabs 1152 need to be arranged corresponding to one channel and on two sides of the corresponding channel. That is, in the present embodiment, four tabs 1152 are arranged.
As shown in FIG. 9, a projection of the tab 1152 in the width direction of the atomization assembly 1 is at least partially overlapped with a projection of the vertical rib 181 in the width direction of the atomization assembly 1. In this way, the airflow channel 19 is sealed by the tab 1152 in combination with the vertical rib 181, avoiding as much as possible the liquid between the atomization base 11 and the shell 10 from flowing into the airflow channel 19, optimally preventing inhaling the leaked liquid.
While determining the configuration of the atomization assembly 1, in order to facilitate assembly of the product, a gap of 0.1mm-0.2mm may be left between the atomization base 11 and the shell 10. However, the gap may cause the condensate remaining on the outer wall of the atomization base 11 to be drawn into the air outlet channel 14 during inhaling, resulting in inhaling the leaked liquid. In the present disclosure, the vertical rib 181 is arranged on each of two sides of the first sealing member 18 corresponding to the airflow channel 19. The first sealing member 18 allows the atomization top base 115 to be sealed with an inner surface of the shell 10, and further prevents the liquid on the outer surface of the atomization top base 115 from entering the airflow channel 19 and further entering the air outlet channel 14, such that a risk of inhaling the leaked liquid is prevented. In the present disclosure, the tab 1152 is arranged one each of two sides of the atomization top base 115 corresponding to the airflow channel 19, and the gap between the tab 1152 and the shell 10 is 0mm-0.03mm (the gap is left to facilitate assembling the product). In this way, the tab 1152 further effectively prevents the liquid between the atomization base 11 and the shell 10 from entering the airflow channel 19 and further entering the air outlet channel 14. In addition, the tab 1152 provides support for the shell 10, reducing deformation caused by pressing the shell 10, improving the structural rigidity of the ultra-thin product.
As shown in FIGS. 10-12, FIG. 10 is an enlarged view of a portion in FIG. 2b, FIG. 11 is a schematic view of engagement between the first sealing member and the shell shown in FIG. 10, and FIG. 12 is cross sectional view of the atomization assembly shown in FIG. 10, taken along the line C-C.
In general, the atomization assembly 1 is flat. That is, a cross section of the atomization assembly 1 perpendicular to the length direction of the atomization assembly 1 is referred to as a lateral cross section, and the lateral cross section is approximately elliptical. Therefore, similarly to an ellipse, a longest segment connecting two vertices of the lateral cross section of the atomization assembly 1 is referred to as a long axis, and a segment connecting another two vertices of the lateral cross section that are close to each other is referred to as a short axis. Similarly, a long axis and a short axis of the first sealing member 18, and a long axis and a short axis of a third sealing member 1162 may be obtained.
At least one first ring-shaped projection 182 is provided on the side wall of the first sealing member 18. The first sealing member 18 is in an interference fit with the shell 10 through the first ring-shaped projection 182. A shape of the first ring-shaped projection 182 matches with a shape of the cross section of the side wall of the first sealing member 18. An interference-fitting amount between one of two vertices of a long axis of the first ring-shaped projection 182 and the shell 10 is a first value. An interference-fitting amount between one of two vertices of a short axis of the first ring-shaped projection 182 and the shell 10 is a second value. The first value is less than the second value. That is, the interference-fitting amount between the vertex of the long axis of the first ring-shaped projection 182 and the shell 10 is less than the interference-fitting amount between the vertex of the short axis of the first ring-shaped projection 182 and the shell 10. Further, a difference between the second value and the first value is greater than 0 and less than or equal to 0.05 mm. The difference between the first value and the second value is determined based on demands, as long as the aerosol-generating substrate in the liquid storage cavity 13 can be prevented from leaking.
In the present embodiment, a lateral cross sectional of the shell 10 is elliptical, and correspondingly, the lateral cross section of the first sealing member 18 is elliptical. As shown in FIG. 11 and FIG. 12, a region A indicates the vertex of the long axis of the side wall of the first sealing member 18, and a region B indicates the vertex of the short axis of the side wall of the first sealing member 18. It shall be understood that, in order to make the electronic atomization device lighter and thinner, even if the cross section of the shell 10 is not elliptical, the cross section of the shell 10 still has the long axis and the short axis, and correspondingly, the cross section of the first sealing member 18 still has the long axis and the short axis. It is only necessary to allow the interference-fitting amount between the vertex of the long axis of the first ring-shaped projection 182 and the shell 10 to be less than the interference-fitting amount between the vertex of the short axis of the first ring-shaped projection 182 and the shell 10.
Since a strength in the thickness direction of the shell 10 of the ultra-thin electronic atomization device is weaker than that of a conventional product (which is not ultra-thin), the first sealing member 18, which is arranged internally for sealing, is more likely to be deformed under a force, such that the sealing effect of the liquid storage cavity 13 may be reduced. In the present embodiment, the interference-fitting amount between the vertex of the long axis of the first ring-shaped projection 182 and the shell 10 is less than the interference-fitting amount between the vertex of the short axis of the first ring-shaped projection 182 and the shell 10. In this way, a force applied to a position of shell 10 corresponding to the vertex of the long axis of the first ring-shaped projection 182 is less than a force applied to a position of shell 10 corresponding to the vertex of the short axis of the first ring-shaped projection 182. That is, the unilateral interference-fitting amount in the width direction of the ultra-thin device of the present disclosure is the same as that of the conventional product (which is not ultra-thin), and the unilateral interference-fitting amount in the thickness direction is greater than that in the width direction. In this way, reduction of the sealing effect caused by deformation of the shell 10 may be compensated, the overall sealing effect of the product is maintained, and leakage of the aerosol-generating substrate, which is caused by sealing failure of the liquid storage cavity 13, may be prevented.
Further, from the vertex of the long axis of the first ring-shaped projection 182 to the vertex of the short axis of the first ring-shaped projection 182, the interference-fitting amount between the first ring-shaped projection 182 and the shell 10 increases gradually along a circumference direction of the first ring-shaped projection 182. That is, from the position of shell 10 corresponding to the vertex of the long axis of the first ring-shaped projection 182 to the position of shell 10 corresponding to the vertex of the short axis of the first ring-shaped projection 182, the force applied to the shell 10 increases gradually along a circumference direction of the shell 10. In this way, the force applied to the position of shell 10 corresponding to the vertex of the long axis of the first ring-shaped projection 182 is minimum, and the force applied to the position of shell 10 corresponding to the vertex of the short axis of the first ring-shaped projection 182 is maximum. In this way, reduction of the sealing effect caused by deformation of the shell 10 is compensated, the overall sealing effect of the product is ensured, and leakage of the aerosol-generating substrate caused by the sealing failure of the liquid storage cavity 13 is prevented. In an embodiment, the first ring-shaped projection 182 has two vertices opposite to each other along the long axis and two short vertices opposite to each other along the short axis. From either of the two vertices along the long axis to one of the two vertices along the short axis, the interference-fitting amount between the first ring-shaped projection 182 and the shell 10 always increases gradually along the circumference direction of the first ring-shaped projection 182.
In an embodiment, the side wall of the first sealing member 18 contacts the inner surface of the shell 10, and the interference fit between the shell 10 and the first sealing member 18 is achieved by arranging the first ring-shaped projection 182 on the side wall of the first sealing member 18. The interference-fitting amount between the first sealing member 18 and the shell 10 is adjusted by adjusting a projection height of the first ring-shaped projection 182.
As shown in FIG. 9, the vertical rib 181 extends along the height direction of the side wall of the first sealing member 18, and the first ring-shaped projection 182 extends along the circumference direction of the side wall of the first sealing member 18. In an embodiment, two first ring-shaped projections 182 are arranged on the side wall of the first sealing member 18, and the two first ring-shaped projections 182 are spaced apart from each other. An end of the vertical rib 181 abuts against one of the two first ring-shaped projection 182 away from the liquid storage cavity 13. The other end of the vertical rib 181 extends in a direction away from the first ring-shaped projection 182. Each of the two first ring-shaped projections 182 has the above interference fitting relationship with the shell 10.
An end of the atomization bottom base 116 away from the liquid storage cavity 13 is arranged with a third sealing member 1162. The third sealing member 1162 is arranged to extend along a circumference direction of the atomization bottom base 116 and contacts the shell 10, enabling the atomization bottom base 116 to be sealed with the shell 10. An interference-fitting amount between a vertex of a long axis of the third sealing member 1162 and the shell 10 is less than an interference-fitting amount between a vertex of a short axis of the third sealing member 1162 and the shell 10. Detailed setting of the interference-fitting amount between the third sealing member 1162 and the shell 10 may be the same as that between the first sealing member 18 and the shell 10, and will not be repeatedly described herein.
In the present disclosure, the interference-fitting amount between the vertex of the long axis of the third sealing member 1162 and the shell 10 is less than the interference-fitting amount between the vertex of the short axis of the third sealing member 1162 and the shell 10. In this way, reduction of the sealing effect caused by deformation of the shell 10 is further compensated, and the overall sealing effect of the product is ensured.
As shown in FIG. 10, an end the atomization base 11 near the air outlet channel 14 defines a vent 117. That is, the atomization top base 115 defines the vent 117. The two air flowing channels 1151 locate on two sides of the vent 117. The vent 117 is communicated with the air outlet channel 14 and the atomization cavity 111, such that the aerosol generated by the atomization core 12 flows out through the air outlet channel 14. An end of the air outlet channel 14 is embedded in the vent 117. A portion of an inner surface of the vent 117 contacts a portion an outer surface of the air outlet channel 14. Another portion of the inner surface of the vent 117 is arranged with a liquid guiding rib 1171. That is, the inner surface of the another portion of the vent 117 that does not contact the outer surface of the air outlet channel 14 is arranged with the liquid guiding rib 1171. A side of the liquid guiding rib 1171 away from the inner surface of the vent 117 forms a tip. A distance between the tip and the inner surface of the vent 117 is a third value H. The third value H is greater than a thickness of a wall of the air outlet channel 14. In an embodiment, the third value H is 0.3mm-0.7mm greater than the thickness of the wall of the air outlet channel 14. In some embodiments, the third value H is 0.5mm greater than the thickness of the wall of the air outlet channel 14.
In detail, an angle α between a top surface of the liquid guiding rib 1171 and a side surface of the liquid guiding rib 1171 is 70°-80°, forming the tip. In some embodiments, the angle α is 75°. The top surface of the liquid guiding rib 1171 is an end surface of the liquid guiding rib 1171 near to the air outlet channel 14. The side surface of the liquid guiding rib 1171 is another end surface of the liquid guiding rib 1171 away from the inner surface of the vent 117. The another end surface of the liquid guiding rib 1171 is connected to the end surface of the liquid guiding rib 1171 near to the air outlet channel 14. The top surface of the liquid guiding rib 1171 abuts against an end surface of the air outlet channel 14. That is, the end surface of the liquid guiding rib 1171 near the air outlet channel 14 abuts against the end surface of the air outlet channel 14.
In an embodiment, two liquid guiding ribs 1171 are arranged symmetrically on the inner surface of the vent 117. Tips of the two liquid guiding ribs 1171 are spaced apart from each other. In an embodiment, a vertical cross section of the liquid guiding rib 1171 is triangular.
In the ultra-thin electronic atomization device, the condensate may be generated quickly and may be accumulated in the air outlet channel 14 to form a liquid column, resulting in inhaling the leaked liquid. In the present embodiment, the entire air outlet channel 14 is extending smoothly without any sharp angle, allowing the condensate to flow easily, and reducing accumulation of the condensate. In addition, two liquid guiding ribs 1171 are arranged symmetrically on the inner surface of the vent 117. The distance between the tip of the liquid guiding rib 1171 and the inner surface of the vent 117 is the third value H, and the third value H is greater than the thickness of the wall of the air outlet channel 14. The condensate in the air outlet channel 14 may spread out and flow along the surface of the liquid guiding rib 1171 due to the surface tension after contacting the liquid guiding rib 1171. Eventually, the condensate flows back to the atomization core 12 and is atomized for a second time. Accumulation of liquid in the air outlet channel 14 is eliminated, preventing inhaling the leaked liquid. Further, an angle is formed between the top surface of the liquid guiding rib 1171 and the side surface of the liquid guiding rib 1171, serving as the tip. Two tips of the two liquid guiding ribs 1171 are spaced apart from each other. That is, a gap is defined between the two liquid guiding ribs 1171. In this way, aerosols on two sides of the liquid guiding ribs 1171 may be mixed easily, improving a taste of aerosols.
In detail, the vent 117 includes a first region and a second region. The second region is located on a side of the first region away from the air outlet channel 14. In the first region, a shape and a size of the vent 171 is invariable. The end of the air outlet channel 14 is embedded in the first region. In the second region, a size of the vent 171 decreases in a direction away from the air outlet channel 14 to form a decreasing port, enabling the condensate in the air outlet channel 14 to be collected easily. The liquid guiding rib 1171 is arranged in the second region. In an embodiment, the vertical cross section of the liquid guiding rib 1171 is a isosceles triangle. A bottom edge of the isosceles triangle is on the inner surface of the vent 117. An angle between two side edges of the isosceles triangle is 70°-80°, and in some embodiment, the angle is 75°. One of the two side edges of the isosceles triangle abuts against the end surface of the air outlet channel 14. A length H of the side edge is 0.3mm-0.7 mm greater than the thickness of the wall of the air outlet channel 14. In some embodiments, the length H of the side edge is 0.5mm greater than the thickness of the wall of the air outlet channel 14. The shape and the size of the liquid guiding rib 1171 can be determined based on demands, as long as the accumulated liquid in the air outlet channel 14 can be eliminated, and the aerosols at two sides of the air outlet channel 14 can be mixed.
As shown in FIG. 13 and FIG. 14, FIG. 13 is a structural schematic view of configuring the atomization core and the atomization base shown in FIG. 10, and FIG. 14 is structural schematic view of a second sealing member shown in FIG. 13.
As shown in FIGS. 10, 13 and 14, a second sealing member 122 is disposed between the top surface of the atomization core 12 and the atomization base 11. That is, the second sealing member 122 is arranged on a surface of the atomization core 12 opposite to the atomization surface 121. The second sealing member 122 is disposed between the atomization core 12 and the atomization top base 115. The second sealing member 122 defines an opening 1221 to expose a portion of the atomization core 12. The aerosol-generating substrate in the liquid storage cavity 13 enters the atomization core 12 through the liquid flowing channel 1151 and the opening 1221. In detail, that is, the second sealing member 122 is ring shaped. The second sealing member 122 includes a first surface and a second surface opposite to the first surface. The first surface of the second sealing member 122 contacts the atomization core 12. The second surface of the second sealing member 122 contacts the atomization top base 115. A second ring-shaped projection 1222 is arranged on the first surface and/or the second surface of the second sealing member 122. The second ring-shaped projection 1222 surrounds a circumference of the opening 1221. By arranging the second ring-shaped projection 1222 on the surface of the second sealing member 122, facial sealing is replaced by linear sealing, reducing a risk of sealing failure due to uneven press-fitting.
A cross section of the second ring-shaped projection 1222 is curved. In some embodiments, the cross section of the second ring-shaped projection 1222 is an inferior arc. A shape of the cross section of the second ring-shaped projection 1222 can be determined based on demands, as long as the facial sealing is replaced by linear sealing.
As shown in FIG. 15 and FIG. 16, FIG. 15 is a perspective view of a power assembly according to an embodiment of the present disclosure, and FIG. 16 is a cross sectional view of the power assembly shown in FIG. 15, taken along the line A-A.
The power supply assembly 2 includes a cover 201, a bracket 202 and an electrode connection assembly 203. The cover 201 has a first receiving cavity (not shown), and the bracket 202 is received in the receiving cavity. In the present embodiment, the cover 201 further has a second receiving cavity 2012 communicated with the first receiving cavity for receiving a part of the atomization assembly 1. While the electronic atomization device is in use, an end of the atomization assembly 1 is inserted into the second receiving cavity 2012 of the cover 201 and electrically connected to the power supply assembly 2, such that the power supply assembly 2 can supply power to the atomization assembly 1. In the present embodiment, a cross section of the cover 201 is oval and rod shaped. In other embodiments, the cover 201 is not limited to this shape. The cover 201 may be cylindrical or column shaped having a squared cross section.
The bracket 202 is configured to mount the electrode connection assembly 203 and other components of the power supply assembly 2. The electrode connection assembly 203, the other components of the power supply assembly 2, and the bracket 202 are all received in the first receiving cavity. The bracket includes a top wall 2021 and a side wall 2022 connected to the top wall 2021. The electrode connection assembly 203 is arranged on the top wall 2021. An end of the electrode connection assembly 203 near the atomization assembly 1 is exposed. In this way, the atomization assembly 1 can be electrically connected to the power supply assembly 2 through the electrode connection assembly 203 when the atomization assembly 1 is inserted in the second receiving cavity 2012. The side wall 2022 is arranged on a side of the top wall 2021 away from the atomization assembly 1 and extends along a length direction of the cover 201. In the present embodiment, the side wall 2022 is arranged on an inner wall of the first receiving cavity.
As shown in FIG. 17, FIG. 18 and FIG. 19, FIG. 17 is a cross sectional view of a portion of the power assembly according to an embodiment of the present disclosure, FIG. 18 is a structural schematic view of some components in the power assembly after being assembled, and FIG. 19 is a structural schematic view of a second circuit board, a reinforcement member and a plurality of light emitting elements after being assembled.
The power supply assembly 2 further includes a first circuit board 204, a second circuit board 205, a reinforcement member 206 and a plurality of light emitting elements 207. The first circuit board 204, the second circuit board 205, the reinforcement member 206 and the plurality of light emitting elements 207 are all arranged on a same side of the side wall 2022 of the bracket 202.
The first circuit board 204 is electrically connected to the electrode connection assembly 203. The first circuit board 204 may be arranged along the length direction of the cover 201, such that a surface of the first circuit board 204 carrying circuits is parallel to the length direction of the cover 201. The first circuit board 204 may be a printed circuit board (PCB). The first circuit board 204 is arranged with a control circuit for controlling operation of the atomization assembly 1.
The second circuit board 205 is laminated with the first circuit board 204, and the second circuit board 205 is disposed between the first circuit board 204 and the side wall 2022 of the bracket 202. Further, as shown in FIG. 19, the second circuit board 205 includes a body portion 2051 and a first connection portion 2052 connected to the body portion 2051. The body portion 2051 is configured to carry the circuit and circuit components. The first connection portion 2052 is configured to connect to the first circuit board 204. The second circuit board 205 may be a flexible printed circuit board (FPC). The FPC is highly reliable and highly flexible, and is supported by a polyimide or polyester film. The FPC is thin and capable of being bent easily. However, due to the high flexibility and low rigidity, the FPC has poor support for a light-emitting diode light (LED light) and other elements arranged thereon. While using the device, the light emitting element 207 may be damaged easily and have a short service life.
The body portion 2051 may be arranged along the length direction of the cover 201, such that a surface of the body portion 2051 carrying the circuits is parallel to the length direction. The first connection portion 2052 is arranged on an end of a side of the body portion 2051 near the atomization assembly 1. Further, the first connection portion 2052 may be bent towards a side of the first circuit board 204 with respect to the body portion 2051. A portion of the first connection portion 2052 is electrically connected to the end of the first circuit board 204 away from the atomization assembly 1. In this way, the first circuit board 204 is electrically connected to the second circuit board 205, and the connection may be achieved by soldering or the like.
In detail, as shown in FIG. 19, the first connection portion 2052 is bent towards the side of the first circuit board 204 at an angle α along a folding line B-B with respect to the body portion 2051. The angle α is 90° < α ≤ 180°, such that a projection of the body portion 2051 on the side wall 2022 of the bracket 202 is partially overlapped with a projection of the first circuit board 204 on the side wall 2022 of the bracket 202, enabling a space occupied by the power supply assembly 2 in the length direction to be saved, and improving space utilization in a thickness direction of the power supply assembly 2. In the present embodiment, the bending angle α is 180 degrees. That is, the first connection portion 2052 is bent 180 degrees relative to the body portion 2051 and further connected to the first circuit board 204. In some embodiments, the first connection portion 2052 may be flat relative to the body portion 2051 and connected to the first circuit board 204. That is, although the second circuit board 205 is bendable, the first connection portion 2052 is not bent relative to the body portion 2051 in the present embodiment.
In the present embodiment, the side wall 2022 of the bracket 202, the body portion 2051 and the first circuit board 204 are arranged along the length direction of the cover 201. Therefore, the projection of the body portion 2051 on the side wall 2022 of the bracket 202 is partially overlapped with the projection of the first circuit board 204 on the side wall 2022 of the bracket 202 by bending the first connection portion 2052 at an angle towards the side of the first circuit board 204 with respect to the body portion 2051. In this way, a space of the first receiving cavity for receiving the components in the length direction may be saved, reducing a size of the power supply assembly 2 in the length direction, enabling the electronic atomization device to be miniaturized.
As shown in FIG. 18 and FIG. 19, a plurality of light emitting elements 207 are arranged on a surface of a side of the body portion 2051 away from the first circuit board 204 and are electrically connected to the first circuit board 204. The light emitting elements 207 may be light-emitting lamps, such as LED lamps. The LED lamps have low energy consumption and low manufacturing costs. Also, the LED lamps are stable in use and effectively ensures stability of light emission. The light emitting element 207 may be configured as an indicator for indicating a power level of the electronic atomization device, an operation feedback, and so on.
The reinforcement member 206 is arranged on the surface of the side of the body portion 2051 near the first circuit board 204. A projection of the plurality of light emitting elements 207 on the second circuit board 205 is at least partially overlapped with a projection of the reinforcement member 206 on the second circuit board 205. That is, the plurality of light emitting elements 207 are arranged on a side of the second circuit board 205, and the reinforcement member 206 is arranged on another side of the second circuit board 205 and is opposite to the plurality of light emitting elements 207. The reinforcement member 206 is configured to reinforce a position of the second circuit board 205 where the plurality of light emitting elements 207 are arranged. The reinforcement member 206 may be made of a material having a certain strength and stiffness, such as being made of at least one of a metal sheet, a ceramic sheet or a hard plastic sheet. It shall be understood that other materials having a certain stiffness and strength also meet the requirements for making the reinforcement member 206. The reinforcement 206 may preferably be a steel sheet considering costs and other factors.
In the present disclosure, the reinforcement member 206 is arranged on the another side of the second circuit board 205 and opposite to the position where the plurality of light emitting elements 207 are arranged. The reinforcement member 206 reinforces the position of the second circuit board 205 where the plurality of light emitting elements 207 are arranged. In this way, strength and rigidity of the position of the second circuit board 205 where the plurality of light emitting elements 207 are arranged may be improved, preventing damage to the light emitting elements 207 and improving the service life of the light emitting elements 207.
In an embodiment, a thickness of the reinforcement member 206 is 0.05mm-0.5mm. The smaller the thickness of the reinforcement member 206 is, the smaller the space in the thickness direction of the first capacitance cavity is occupied by the reinforcement member 206. Therefore, the electronic atomization device may be thin and light. The greater the thickness of the reinforcement member 206, the higher the strength and stiffness of the reinforcement member 206. Therefore, a reinforcing effect on the position of the second circuit board 205 where the plurality of light emitting elements 207 are arranged may be better. Therefore, the thickness of the reinforcement member 206 is controlled within a certain range, enabling the reinforcement member 206 to occupy a limited space in the thickness direction of the first receiving cavity, and at the same time, to have proper strength and stiffness. The thickness of the reinforcement member 206 may be 0.15 mm when allowing the electronic atomization device to be ultra-thin.
In an embodiment, the reinforcement member 206 may be fixed to the body portion 2051. For example, the reinforcement member 206 may be fixed to the body portion 2051 by a bonding layer, and the bonding layer may be a double-sided tape.
Further, in the present embodiment, as shown in FIG. 17 and FIG. 18, the power supply assembly 2 further includes a battery 208. The battery 208 is electrically connected to the first circuit board 204, such that the battery 208 supplies electrical power to the atomization assembly 1. The battery 208 is mounted on the bracket 202. The battery 208 is arranged on a side of the first circuit board 204 away from the top wall of the bracket 202 and arranged on a surface of the body portion 2051 away from the side wall 2022 of the bracket 202. A portion of the reinforcement member 206 is clamped between the battery 208 and the body portion 2051, such that the reinforcement member 206 is arranged on the body portion 2051 by tight engagement. The reinforcement member 206 is clamped between the battery 208 and the body portion 2051, and therefore, tight engagement between components in the power supply assembly 2 is utilized effectively, further enhancing fixation of the reinforcement member 206.
In an embodiment, as shown in FIG. 18 and FIG. 19, the first connection portion 2052 has a bending portion 2052a and a straight portion 2052b. The body portion 2051, the bending portion 2052a and the straight portion 2052b are connected with each other in sequence. The bending portion 2052a is connected to an end of the body portion 2051 near the atomization assembly 1. The bending portion 2052a is bent at an angle α towards the side of the first circuit board 204 relative to the body portion 2051. The straight portion 2052b extends along the length direction of the cover 201 and is electrically connected to the first circuit board 204.
As shown in FIG. 17, a portion of the reinforcement member 206 is disposed between the battery 208 and the body portion 2051, and another portion of the reinforcement member 206 extends into a space between the first circuit board 204 and the body portion 2051. The portion of the reinforcement member 206 disposed between the battery 208 and the body portion 2051 is clamped by the battery 208 and the bracket, such that stability of the reinforcement member 206 is maintained. The another portion of the reinforcement member 206 extending into the space between the first circuit board 204 and the body portion 2051 may be in suspension to support the body portion 2051. An end of the reinforcement member 206 near the atomization assembly 1 is disposed near the bending portion 2052a to limit a bending position of the second circuit board 205. In some embodiments, the end of the reinforcement member 206 near the atomization assembly 1 abuts against an inner recessed part of the bending portion 2052a.
As shown in FIG. 17, in the present embodiment, the plurality of light emitting elements 207, the body portion 2051, the reinforcement member 206, the straight portion 2052b and the first circuit board 204 are arranged in successive layers along the thickness direction of the cover 201. Projections of the plurality of light emitting elements 207, the body portion 2051, the reinforcement member 206, the straight portion 2052b and the first circuit board 204 on the bracket 202 are partially overlapped with each other. The bending portion 2052a is connected to the end of the body portion 2051 near the atomization assembly 1 and connected to the end of the straight portion 2052b near the atomization assembly 1. In the present disclosure, various components are arranged in sequence along the thickness direction of the cover 201, and the projections of the various components on the bracket 202 are overlapped with each other. In this way, the space in the thickness direction of the first receiving cavity can be optimally utilized. Various components of the power supply assembly 2 can be stacked in sequence in the first receiving cavity, a waste of space in the thickness direction of the first receiving cavity may be reduced, enabling the electronic atomization device to be thin and light.
In the present embodiment, as shown in FIG. 18, the power supply assembly 2 further includes a third circuit board 209 and a charging interface 210. The third circuit board 209 and the charging interface 210 are mounted on the bracket 202. The end of the second circuit board 205 away from the atomization assembly 1 has a second connection portion 2053. The second connection portion 2053 is electrically connected to the third circuit board 209, allowing the battery 208 to be electrically connected to the third circuit board 209. The third circuit board 209 is arranged with a charging circuit. The battery 208 may be electrically connected to the charging interface 210 through the charging circuit. The charging interface 210 is configured to electrically connect to an external component to allow the external component to charge the battery 208.
As shown in FIG. 20, FIG. 20 is a perspective view of a bracket according to an embodiment of the present disclosure.
As shown in FIG. 17 and FIG. 20, in the present embodiment, the plurality of light emitting elements 207 are spaced apart from each other and arranged on the second circuit board 205. The side wall 2022 of the bracket 202 defines a plurality of light shielding holes 2023, and the plurality of light shielding holes 2023 are spaced apart from each other. The plurality of light emitting elements 207 are received in the plurality of light shielding holes 2023. The plurality of light shielding holes 2023 prevent light emitted by plurality of light emitting elements 207 from interfering with each other and from escaping. In this way, brightness of the plurality of light emitting elements 207 may be equivalent with each other. In some embodiments, the number of light emitting elements 207 is equal to the number of light shielding holes 2023. One light emitting element 207 is received in one light shielding hole 2023, prevent light emitted by adjacent light emitting elements 207 from interfering with each other and from escaping. The light shielding holes 2023 are arranged to be matched with the light emitting elements 207, such that the light emitting elements 207 can be completely received in the light shielding holes 2023. That is, each light emitting element 207 is embedded in the bracket 202, such that the light emitting elements 207 and the side wall 2022 of the bracket 202 overlap with each other in the thickness direction of the power supply assembly 2, effectively utilizing the space of the first receiving cavity in the thickness direction, and saving a space of the power supply assembly 2 in the thickness direction. In the present embodiment, additional light shielding elements are not required to be received in the first receiving cavity, reducing the number of components in the power supply assembly 2, and simplifying an assembly process correspondingly. Therefore, a manufacturing cost of the power supply assembly 2 is reduced. Further, a size of the power supply assembly 2 in the thickness direction is reduced, enabling the electronic atomization device to be thin and light.
As shown in FIG. 17, the power supply assembly 2 also includes a light diffusing layer 211. The light diffusing layer 211 is arranged on a side of the bracket 202 away from the body portion 2051. The light diffusing layer 211 covers the plurality of light shielding holes 2023. The light diffusing layer 211 is configured to guide light of the light emitting elements 207 in the light shielding holes 2023, and configured to enable the light emitted from the light emitting elements 207 to be diffused evenly. In this way, the emitted light is evenly distributed, preventing a situation that a location near the light is brighter, and a location distant from the light is darker. The diffusing layer 211 may be a light diffusing sheet or a light diffusing film. To be noted that the light diffusing sheet or the light diffusing film may also be named as a light homogenizing sheet or a light homogenizing film. In common, a light homogenizing microstructure is arranged on a surface of a light transmitting medium, or light scattering particles are added into the light transmitting medium, such that light homogenizing is achieved.
In detail, as shown in FIG. 17 and FIG. 20, a side of the bracket 202 away from the body portion 2051 defines a mounting groove 2024. The light diffusing layer 211 is received in the mounting groove 2024. A thickness of the light diffusing layer 211 is the same as a depth of the mounting groove 2024. In the present disclosure, the light diffusing layer 211 is received in the mounting groove 2024 of the bracket 202. Therefore, the light diffusing layer 211 and the side wall 2022 of the bracket 202 are overlapped in the thickness direction of the first receiving cavity. The space of the first receiving cavity in the thickness direction is utilized effectively, reducing the size of the power supply assembly 2 in the thickness direction, enabling the electronic atomization device to be thin and light.
As shown in FIG. 17, the diffusing layer 211 defines a plurality of spacing holes 2111. The plurality of spacing holes 2111 are spaced apart from each other, and misalign with the plurality of light shielding holes 2023, that is, the plurality of spacing holes 2111 misalign with the plurality of light emitting elements 207. In detail, the number of spacing holes 2111 is one less than the number of light emitting elements 207. Each spacing hole 2111 is defined between two adjacent light emitting elements 207. The light diffusion layer 211 defining the light spacing holes 2111 further prevents the light emitted by adjacent light emitting elements 207 from interfering with each other and from escaping, enabling the plurality of light emitting elements 207 to generate uniform brightness.
The above shows only some of the embodiments of the present disclosure and shall not be interpreted as limiting the scope of the present disclosure. Any equivalent device or equivalent process transformation based on the specification and accompanying of the present disclosure, applied directly or indirectly in other related fields, shall be equally covered by the scope of the present disclosure.

Claims

An atomization assembly, characterized by comprising:
a shell (10), defining a liquid storage cavity (13) and a receiving cavity (15), wherein the liquid storage cavity (13) is defined to receive an aerosol-generating substrate;

an atomization base (11), received in the receiving cavity (15),

wherein an outer surface of an end of the atomization base (11) near the liquid storage cavity (13) defines an air-exchanging groove (112), an end of the air-exchanging groove (112) is communicated with the liquid storage cavity (13);

an outer surface of an end of the atomization base (11) away from the liquid storage cavity (13) defines a liquid storage groove (113);

an outer surface of a middle portion of the atomization base (11) defines a liquid guiding groove (114);

an end of the liquid guiding groove (114) is communicated with the other end of the air-exchanging groove (112), the other end of the liquid guiding groove (114) is communicated with the liquid storage groove (113);

a width of the end of the liquid guiding groove (114) near the air-exchanging groove (112) is less than a width of the end of the liquid guiding groove (114) near the liquid storage groove (113); and/or

a depth of the end of the liquid guiding groove (114) near the air-exchanging groove (112) is less than a depth of the end of the liquid guiding groove (114) near the liquid storage groove (113).
The atomization assembly according to claim 1,
wherein a width of the liquid guiding groove (114) gradually increases in a direction extending from the air-exchanging groove (112) to the liquid storage groove (113); and/or

a depth of the liquid guiding groove (114) gradually increases in a direction approaching a central axis of the atomization assembly.
The atomization assembly according to claim 1,
wherein the liquid guiding groove (114) comprises a first liquid guiding sub-groove (1141) and a second liquid guiding sub-groove (1142);

the second liquid guiding sub-groove (1142) locates at an end of the first liquid guiding sub-groove (1141) away from the liquid storage cavity (13);

a shape and a size of a lateral cross section of the first liquid guiding sub-groove (1141) is invariable;

a shape and a size of a lateral cross section of the second liquid guiding sub-groove (1142) is invariable; and

an area of the lateral cross section of the second liquid guiding sub-groove (1142) is greater than an area of the lateral cross section of the first liquid guiding sub-groove (1141).
The atomization assembly according to claim 3, wherein a side of a vertical cross section of the liquid guiding groove (114) is parallel to a length direction of the atomization base (11).
The atomization assembly according to claim 4,
wherein a width of the liquid guiding groove (114) gradually increases in the direction extending from the air-exchanging groove (112) to the liquid storage groove (113);

a depth of the liquid guiding groove (114) gradually increases in the direction approaching the central axis of the atomization assembly; and

a lateral cross section of the liquid guiding groove (114) is triangular, and a vertical cross section of the liquid guiding groove (114) is right-triangular or right-angle trapezoidal.
The atomization assembly according to claim 1, wherein a width of the liquid guiding groove (114) is in a range of 0.2mm to 1.5mm, a depth of the liquid guiding groove (114) is in a range of 0.2mm to 1.5mm, and a width of the air-exchanging groove (112) is in a range of 0.2mm to 1.5mm, a depth of the air-exchanging groove (112) is in a range of 0.2mm to 1.5mm.
The atomization assembly according to claim 1, wherein the atomization base (11) comprises an atomization top base (115) and an atomization bottom base (116); the air-exchanging groove (112) is defined on an outer surface of the atomization top base (115); and the liquid guiding groove (114) and the liquid storage groove (113) are defined on an outer surface of the atomization bottom base (116).
The atomization assembly according to claim 7,
wherein the atomization base (11) defines an airflow channel (19);

the atomization assembly further comprises a first sealing member (18), a side wall of the first sealing member (18) is arranged on the outer surface of the atomization top base (115);

a vertical rib (181) is arranged on the side wall of the first sealing member (18) and corresponds to each of two sides of the airflow channel (19);

an angle between an extending direction of the vertical rib (181) and a central axis of the atomization assembly is less than 90 degrees; and

the vertical rib (181) is in contact with the shell (10).
The atomization assembly according to claim 8, wherein the side wall of the first sealing member (18) has an end face near the atomization bottom base (116), a gap between the end face and a top face of the atomization bottom base (116) is not less than 0.1mm and is not greater than 0.3mm.
The atomization assembly according to claim 8, wherein a tab (1152) is arranged on the atomization top base (115) and corresponds to each of two sides of the airflow channel (19); and an angle between an extending direction of the tab (1152) and the central axis of the atomization assembly is less than 90 degrees.
The atomization assembly according to claim 10, wherein a gap between the tab (1152) and the shell (10) is in a range of 0 to 0.3mm.
The atomization assembly according to claim 10, wherein a projection of the tab (1152) along a width direction of the atomization assembly is at least partially overlapped with a projection of the vertical rib (181) along the width direction of the atomization assembly.
An electronic atomization device, comprising a power supply assembly (2) and the atomization assembly (1) according to any one of claims 1 to 12, wherein the power supply assembly (2) controls operations of the atomization assembly (1).