Patent Description:
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. Known atomizers are disclosed for example in <CIT> or <CIT>.

According to the present invention, 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.

In order to illustrate the technical solutions of embodiments of the present invention 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 invention, and other drawings may be obtained based on these drawings without any creative work by those skilled in the art.

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.

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> 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 <NUM> and a power supply assembly <NUM> connected to the atomization assembly <NUM>. The atomization assembly <NUM> 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 <NUM> 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 <NUM> 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 <NUM> to enable the atomization assembly <NUM> 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 <NUM> to operate or stop operating, based on the change in the airflow detected by the airflow sensor and a predetermined program. The atomization assembly <NUM> and the power supply assembly <NUM> may be configured as an integral one-piece structure, or may be detachably connected with each other. Configuration between the atomization assembly <NUM> and the power supply assembly <NUM> can be determined based on the specific demands.

As shown in <FIG>, <FIG>, <FIG>, and <FIG>, <FIG> is a structural schematic view of the atomization assembly according to an embodiment of the present disclosure, <FIG> is a cross sectional view of the atomization assembly shown in <FIG>, taken along the line A-A, <FIG> is a structural schematic view of an atomization base in the atomization assembly shown in <FIG>, and <FIG> is a structural schematic view of an atomization bottom base in the atomization base shown in <FIG>.

The atomization assembly <NUM> includes a shell <NUM>, an atomization base <NUM> and an atomization core <NUM>. The shell <NUM> defines a liquid storage cavity <NUM>, an air outlet channel <NUM> and a receiving cavity <NUM>. The liquid storage cavity <NUM> extends around the air outlet channel <NUM>. The liquid storage cavity <NUM> is defined to store the aerosol-generating substrate. The atomization base <NUM> is received in the receiving cavity <NUM>. The atomization base <NUM> defines a mounting cavity <NUM>, and the atomization core <NUM> is received in the mounting cavity <NUM>. That is, the atomization core <NUM> and the atomization base <NUM> are received in the receiving cavity <NUM>. An atomization cavity <NUM> is defined between an atomization surface <NUM> of the atomization core <NUM> and a cavity wall of the mounting cavity <NUM>. The atomization cavity <NUM> is communicated with the air outlet channel <NUM>. The atomization core <NUM> is configured to atomize the aerosol-generating substrate in the liquid storage cavity <NUM> to generate the aerosol. An end of the shell <NUM> has an inhalation port <NUM> communicating with the air outlet channel <NUM>. The air outlet channel <NUM> is communicating with the atomization cavity <NUM>. The user inhales the atomized aerosol of the atomization core <NUM> through the inhalation port <NUM>.

The atomization base <NUM> is usually arranged with an air-exchanging structure to introduce external air into the liquid storage cavity <NUM> to prevent the liquid storage cavity <NUM> from being in an excessively negative pressure, such that air pressure balance between the liquid storage cavity <NUM> and the external atmosphere may be achieved. In this way, the aerosol-generating substrate in the liquid storage cavity <NUM> may be transported to the atomization core <NUM> easily. The air-exchanging structure may usually be a micro groove directly or indirectly communicated with the liquid storage cavity <NUM>, 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 <NUM>, liquid spraying may occur on the atomization surface <NUM> of the atomization core <NUM>, and the sprayed liquid may be accumulated in the atomization cavity <NUM>. Hot air in the air outlet channel <NUM> or the atomization cavity <NUM> 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 <NUM> include leakage from the air-exchanging structure of the liquid storage cavity <NUM>, the spraying liquid from the atomization surface <NUM> of the atomization core <NUM>, and condensate in the air outlet channel <NUM> or the atomization cavity <NUM>. Leaked liquid may be inhaled into the user's mouth, causing poor user experience. The leaked liquid may leak into the power supply assembly <NUM>, causing corrosion to the power supply assembly <NUM> and affecting the service life of the power supply assembly <NUM>.

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 <NUM> for absorbing the leaked liquid. However, since the liquid storage structure is directly or indirectly communicated with the atomization cavity <NUM> or the air outlet channel <NUM>, 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 <NUM>, 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 <NUM> caused by liquid leakage.

The atomization base <NUM> of the present disclosure has at least one liquid collection cavity <NUM>. The liquid collection cavity <NUM> is defined on a side wall of the atomization cavity <NUM> and is communicated with the atomization cavity <NUM>. The liquid collection cavity <NUM> is defined to collect the leaked liquid coming from the spraying liquid from the atomization surface <NUM> of the atomization core <NUM> and the condensate from the air outlet channel <NUM> or the atomization cavity <NUM>. A liquid absorption member <NUM> is received in the liquid collection cavity <NUM>. The liquid absorption member <NUM> is configured to absorb the leaked liquid and store the leaked liquid sufficiently. By storing the leaked liquid in the liquid collection cavity <NUM> and in the liquid absorption member <NUM>, 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 <NUM> caused by the leaked liquid may be fully reduced. The liquid absorption member <NUM> 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 <NUM> is defined on the side wall of the atomization cavity <NUM>. A space in a width direction of the atomization assembly <NUM> is utilized effectively without increasing a size of the atomization assembly <NUM> or a size of the atomization base <NUM>, such that the leaked liquid may be absorbed efficiently and reliably. It shall be understood that the liquid collection cavity <NUM> may be in a millimeter size and has a large liquid absorption capacity.

In detail, the atomization base <NUM> includes an atomization top base <NUM> and an atomization bottom base <NUM>. The atomization bottom base <NUM> is arranged on a side of the atomization top base <NUM> away from the liquid storage cavity <NUM>. The atomization top base <NUM> defines two liquid flowing channels <NUM>. The two liquid flowing channels <NUM> are symmetrically defined on two sides of the air outlet channel <NUM>. One of the two liquid flowing channels <NUM> is defined on a first side of the air outlet channel <NUM>, and the other one of the two liquid flowing channels <NUM> is defined on a second side of the air outlet channel <NUM> opposite to the first side. Each of the two liquid flowing channels <NUM> is communicated with the liquid storage cavity <NUM>. The aerosol-generating substrate in the liquid storage cavity <NUM> enters the atomization core <NUM> through the liquid flowing channel <NUM>, and is heated and atomized by the atomization core <NUM>. As shown in <FIG> and <FIG>, the atomization base <NUM> has a recess <NUM>. A wall of the recess <NUM> and the atomization top base <NUM> cooperatively define a mounting cavity <NUM>. The atomization core <NUM> is received in the mounting cavity <NUM>. The atomization core <NUM> 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 <NUM>. The porous liquid guide member uses a capillary force to guide the aerosol-generating substrate to flow to the atomization surface <NUM>, and the aerosol-generating substrate is heated and atomized by the heating member arranged on the atomization surface <NUM> to generate the aerosol. An atomization cavity <NUM> is defined between the atomization surface <NUM> of the atomization core <NUM> and a bottom surface of the recess <NUM>. A surface of a side wall of the recess <NUM> facing the atomization top base <NUM> defines a blind hole <NUM>. A wall of the blind hole <NUM> and the atomization top base <NUM> cooperatively define the liquid collection cavity <NUM>. The atomization surface <NUM> of the atomization core <NUM> faces away from the inhalation port <NUM>, and that is, the atomization surface <NUM> of the atomization core <NUM> faces downwardly.

In another embodiment, an end face of the atomization top base <NUM> near the atomization bottom base <NUM> is a flat face. The end face of the atomization top base <NUM> near the atomization bottom base <NUM> and a wall of the blind hole <NUM> in the side wall of the recess <NUM> facing the atomization top base <NUM> cooperatively define the liquid collection cavity <NUM>. In another embodiment, a surface of the atomization top base <NUM> near the atomization bottom base <NUM> defines a blind hole <NUM>. A wall of the blind hole <NUM> and the wall of the blind hole <NUM> cooperatively define the liquid collection cavity <NUM> (as shown in <FIG>). A shape and a size of a cross section of the blind hole <NUM> may be the same as or different from that of a cross section of the blind hole <NUM>. 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 <NUM> is less than that of the cross section of the blind hole <NUM>. By defining the blind hole <NUM> on the surface of the atomization top base <NUM> near the atomization bottom base <NUM>, the wall of the blind hole <NUM> and the wall of the blind hole <NUM> cooperatively define the liquid collection cavity <NUM>, enabling a liquid storage capacity of the liquid collection cavity <NUM> to be as large as possible, optimally preventing the leaked liquid from flowing to reach the power supply assembly <NUM>.

Further, as shown in <FIG>, each of two opposite side walls of the recess <NUM> defines the blind hole <NUM>. Walls of the two blind holes <NUM> and the atomization top base <NUM> cooperatively define two liquid collection cavities <NUM>. Actual demands may determine whether the surface of the atomization top base <NUM> near the atomization bottom base <NUM> defines the blind hole <NUM>. That is, the two liquid collection cavities <NUM> are defined on opposite sides of the atomization cavity <NUM> in a width direction of the atomization bottom base <NUM> (i.e., one side of the atomization cavity <NUM> defines one of the two liquid collection cavities <NUM>, and the opposite side of the atomization cavity <NUM> defines the other one of the two liquid collection cavities <NUM>). In some embodiments, two liquid collection cavities <NUM> are defined symmetrically with each other and are defined on opposite sides of the atomization cavity <NUM> in the width direction of the atomization bottom base <NUM>. The width direction of the atomization base <NUM> is the same as the width direction of the atomization assembly <NUM>.

It shall be understood that a shape and a size of the liquid absorption member <NUM> are adaptive to a shape and a size of the liquid collection cavity <NUM>, such that the liquid absorption member <NUM> fills the liquid collection cavity <NUM>. Shapes and sizes of the liquid absorption member <NUM> and the liquid collection cavity <NUM> may be designed based on demands, as long as the liquid absorption member <NUM> and the liquid collection cavity <NUM> can absorb the leaked liquid. In some embodiments, a cross section of the liquid collection cavity <NUM> and a cross section of the liquid absorption member <NUM> may be equilateral polygonal. In some embodiments, the cross section of the liquid collection cavity <NUM> and/or the cross section of the liquid absorption member <NUM> may be circular. For a product arranged with the liquid absorption member <NUM> 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 <NUM> having the circular cross section is assembled into the liquid collection cavity <NUM>, 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 <NUM> having the circular cross section may be significantly greater than that of the liquid absorption member <NUM> in a sheet.

A top surface of the liquid collection cavity <NUM> is not lower than the atomization surface <NUM> of the atomization core <NUM>; and/or a bottom surface of the liquid collection cavity <NUM> is not higher than a bottom surface of the atomization cavity <NUM>. In this way, a height of the liquid collection cavity <NUM> is greater than a height of the atomization cavity <NUM>, such that the liquid collection cavity <NUM> has a higher capacity of storing the leaked liquid. The bottom surface of the liquid collection cavity <NUM> is not higher than the bottom surface of the atomization cavity <NUM>, enabling the leaked liquid in the atomization cavity <NUM> to enter the liquid collection cavity <NUM> easily. The top surface of the liquid collection cavity <NUM> is not lower than the atomization surface <NUM> of the atomization core <NUM>. In this way, when the end face of the atomization top base <NUM> near the atomization bottom base <NUM> is flat, the end face of the atomization top base <NUM> near the atomization bottom base <NUM> and the wall of the blind hole <NUM> cooperatively define the liquid collection cavity <NUM>. Alternatively, the blind hole <NUM> defined on the surface of the atomization top base <NUM> near the atomization bottom base <NUM> and the blind hole <NUM> are communicated with each other and cooperatively serve as the liquid collection cavity <NUM>. Regardless of how the liquid collection cavity <NUM> is defined, the height of the liquid collection cavity <NUM> is always greater than or equal to the height of the atomization cavity <NUM>, such that the liquid storage capacity of the liquid collection cavity <NUM> is increased. In the present disclosure, the bottom surface of the liquid collection cavity <NUM> is not higher than the bottom surface of the atomization cavity <NUM>, and the top surface of the liquid collection cavity <NUM> is not lower than the atomization surface <NUM> of the atomization core <NUM>. A space in a length direction of the atomization cavity <NUM> is fully utilized to increase the liquid storage capacity of the liquid collection cavity <NUM> as much as possible, and a space in a thickness direction of the atomization assembly <NUM> occupied by the liquid collection cavity <NUM> 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 <NUM> is the same as the length direction of the atomization assembly <NUM>. In some embodiments, an opening of the blind hole <NUM> is not lower than the atomization surface <NUM> of the atomization core <NUM>, and the bottom surface of the blind hole <NUM> is lower than the bottom surface of the atomization cavity <NUM>.

In the present disclosure, a common side wall of the liquid collection cavity <NUM> and the atomization cavity <NUM> defines a first through hole <NUM> communicating with the liquid collection cavity <NUM> and the atomization cavity <NUM>, such that the leaked liquid in the atomization cavity <NUM> is guided into the liquid collection cavity <NUM>. A bottom surface or a lowest point of a wall of the first through hole <NUM> is not higher than a bottom surface of the atomization cavity <NUM>. Based on the principle that liquid flows from higher to lower in a natural state, the leaked liquid in the atomization cavity <NUM> may be guided to the liquid collection cavity <NUM> rapidly. A position of a top surface or a highest point of the first through hole <NUM> is not limited by the present disclosure, as long as the liquid collection cavity <NUM> is communicated with the atomization cavity <NUM>. A size of the first through hole <NUM> in a direction perpendicular to the length of the atomization assembly <NUM> is in a range of <NUM>-<NUM>. In some embodiments, the size of the first through hole <NUM> may be <NUM>. It shall be understood that a recess or a notch, which is communicated with the liquid collection cavity <NUM> and the atomization cavity <NUM>, may be defined in the common side wall of the liquid collection cavity <NUM> and the atomization cavity <NUM>, as long as the liquid collection cavity <NUM> is communicated with the atomization cavity <NUM>. The recess or the notch may be determined based on demands. When the common side wall of the liquid collection cavity <NUM> and the atomization cavity <NUM> defines the notch communicating with the liquid collection cavity <NUM> and the atomization cavity <NUM>, a bottom surface of the notch is lower than the bottom surface of the atomization cavity <NUM>, and a size of the notch along the length direction of the atomization assembly <NUM> is the same as the height of the blind hole <NUM>. In this way, when a large amount of leaked liquid is accumulated in the atomization cavity <NUM>, the leaked liquid may be quickly guided into the liquid collection cavity <NUM>.

As shown in <FIG>, an outer surface of an end of the atomization base <NUM> near the liquid storage cavity <NUM> defines an air-exchanging groove <NUM>. An end of the air-exchanging groove <NUM> is communicated with the liquid storage cavity <NUM> to provide air exchange for the liquid storage cavity <NUM>, such that air pressure balance between the liquid storage cavity <NUM> and the external atmosphere may be achieved. An outer surface of an end of the atomization base <NUM> away from the liquid storage cavity <NUM> defines a liquid storage groove <NUM>. An outer surface of a middle portion of the atomization base <NUM> defines a liquid guiding groove <NUM>. An end of the liquid guiding groove <NUM> is communicated with the other end of the air-exchanging groove <NUM>, and the other end of the liquid guiding groove <NUM> is communicated with the liquid storage groove <NUM>. Since some aerosol-generating substrate leaking from the liquid storage cavity <NUM> may be in the air-exchanging groove <NUM>, the aerosol-generating substrate in the air-exchanging groove <NUM> may leak after being accumulated to reach a certain volume, resulting in the liquid leakage. The leaked liquid in the air-exchanging groove <NUM> is guided into the liquid storage cavity <NUM> through the liquid guiding groove <NUM>, the leaked liquid is stored in the liquid storage cavity <NUM>, preventing the impact on the power supply assembly <NUM> caused by the leaked liquid. In an embodiment, a side wall of the liquid collection cavity <NUM> defines a second through hole <NUM> (as shown in <FIG>). The second through hole <NUM> communicating the liquid storage cavity <NUM> with the liquid collection cavity <NUM>, such that the second through hole <NUM> guides the leaked liquid to flow from the liquid storage cavity <NUM> into the liquid collection cavity <NUM>, and the leaked liquid is absorbed by the liquid absorption member <NUM> in the liquid collection cavity <NUM>. In this way, inhaling the leaked liquid may be prevented, and the leaked liquid may be prevented from entering the power supply assembly <NUM>, performance of the power supply assembly <NUM> may not be affected. The second through hole <NUM> and the first through hole <NUM>, which are defined on the side wall of the blind hole <NUM>, may be misaligned. A cross section of the second through hole <NUM> can be circular, squared or stripped, which may be determined based on demands. An area of the cross section of the second through hole <NUM> is <NUM>-<NUM><NUM>. In some embodiments, the cross section of the second through hole <NUM> is stripped having a dimension of <NUM> * <NUM>. A position of the side wall of the liquid collection cavity <NUM> for defining the second through hole <NUM> is determined based on the demands. In some embodiments, the second through hole <NUM> defined at a middle portion of the side wall of the liquid collection cavity <NUM> in the height direction. That is, the second through hole <NUM> is not at an uppermost position or a lowermost position of side wall of the liquid collection cavity <NUM>. It shall be understood that, the second through hole <NUM> is communicated with the liquid storage groove <NUM> and the liquid collection cavity <NUM>, and most of the leaked liquid in the liquid storage groove <NUM> comes from the air-exchanging groove <NUM> on the atomization top base <NUM>. Therefore, defining the second through hole <NUM> in the middle portion avoids a structural conflict with the first through hole <NUM> while the liquid is being guided. At the same time, the second through-hole <NUM> being misaligned with the first through hole <NUM> allows the leaked liquid to be guided into the liquid absorption member <NUM> in the liquid collection cavity <NUM> better and quickly, reducing a possibility of liquid leakage caused by a portion of the liquid absorption member <NUM> being saturated by the liquid.

As shown in <FIG>, in detail, the air-exchanging groove <NUM> is defined on the outer surface of the atomization top base <NUM>, and the liquid guiding groove <NUM> and the liquid storage groove <NUM> are defined on the outer surface of the atomization bottom base <NUM>. A width and/or a depth of an end of the liquid guiding groove <NUM> near the air-exchanging groove <NUM> is less than a width and/or a depth of an end of the liquid guiding groove <NUM> near the liquid storage groove <NUM>. That is, a width and/or a depth of the liquid guiding groove <NUM> increases in a gradient along a direction from the air-exchanging groove <NUM> to the liquid storage groove <NUM>, and details of the gradient may be determined based on demands. A width of an end of the liquid guiding groove <NUM> away from the liquid storage cavity <NUM> is <NUM>-<NUM>, and a depth of the end of the liquid guiding groove <NUM> away from the liquid storage cavity <NUM> is <NUM>-<NUM>. A width of an end of the liquid guiding groove <NUM> near the liquid storage groove <NUM> is <NUM>-<NUM>, and a depth of the end of the liquid guiding groove <NUM> near the liquid storage groove <NUM> is <NUM>-<NUM>. That is, the width of the liquid guiding groove <NUM> is <NUM>-<NUM>, and the depth of the liquid guiding groove <NUM> is <NUM>-<NUM>. In some embodiments, the width of the end of the liquid guiding groove <NUM> near the liquid storage cavity <NUM> is <NUM>, and the depth of the end of the liquid guiding groove <NUM> near the liquid storage cavity <NUM> is <NUM>.

A side of a cross section of the liquid guiding groove <NUM>, taken along a vertical direction, is parallel to the length direction of the atomization base <NUM>. In this way, the liquid guiding groove <NUM> may be shaped easily, and the liquid guiding groove <NUM> may be smoothly transitioned with the shell <NUM>, improving assembly reliability and yield.

In the present disclosure, the width and/or the depth of the end of the liquid guiding groove <NUM> near the air-exchanging groove <NUM> is less than that of the end of the liquid guiding groove <NUM> near the liquid storage groove <NUM>. When the liquid in the air-exchanging groove <NUM> on the outer surface of the atomization top base <NUM> flows to the gap between the atomization top base <NUM> and the atomization bottom base <NUM>, the liquid guiding groove <NUM> on the atomization bottom base <NUM> may guide the liquid to the liquid storage groove <NUM>, avoiding the leaked liquid generated in the air-exchanging groove <NUM> from flowing along the gap between the atomization base <NUM> and the shell <NUM> to reach the air outlet channel <NUM>, such that inhaling the leaked liquid may be prevented. Since the wall of the liquid guiding groove <NUM> is inclined, the liquid may easily enter the liquid storage groove <NUM> for storage and may not flow reversely out of the liquid storage groove <NUM>.

As shown in <FIG>, <FIG> 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> is a cross sectional view of the atomization assembly shown in <FIG>, taken along the line B-B, and <FIG> 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 <NUM> gradually increases in a direction away from the liquid storage cavity <NUM>. That is, the width of the liquid guiding groove <NUM> gradually increases in a direction extending from the air-exchanging groove <NUM> to the liquid storage groove <NUM> (a gradient that the width of the liquid guiding groove <NUM> increases in the direction from the air-exchanging groove <NUM> to the liquid storage groove <NUM> may be small). The side of the cross section of the liquid guiding groove <NUM>, taken along the vertical direction, is parallel to the length direction of the atomization base <NUM>. The vertical cross section of the liquid guiding groove <NUM> is taken by a plane parallel to the width direction of the atomization assembly <NUM>. The length direction of the atomization base <NUM> is the same as the length direction of the atomization assembly <NUM>. In some embodiments, a shape of the vertical cross section of the liquid guiding groove <NUM> is a right triangle or a right trapezoid (as shown in <FIG>). The depth of the liquid guiding groove <NUM> gradually increases in a direction approaching to a central axis of the atomization assembly <NUM>. A lateral cross section of the liquid guiding groove <NUM> is triangular (as shown in <FIG>). That is, the depth of the liquid guiding groove <NUM> gradually increases from zero in the width direction and along the direction approaching to the central axis of the atomization assembly <NUM>. In the present embodiment, an overall structure of the liquid guiding groove <NUM> is a trigonal frustum. Configuring the liquid guiding groove <NUM> as the trigonal frustum allows the liquid guiding groove <NUM> to be shaped easily and allows a transition between the liquid guiding groove <NUM> and the shell <NUM> to be smooth, improving assembly reliability and yield. It shall be understood that the lateral cross section of the liquid guiding groove <NUM> can be isosceles trapezoid, semi-circular, and so on. The vertical cross section of the liquid guiding groove <NUM> can be in any other shape. Shapes of the vertical cross section and the lateral cross section of the liquid guiding groove <NUM> can be determined based on demands.

In another embodiment, as shown in <FIG>, the liquid guiding groove <NUM> includes a plurality of liquid guiding sub-grooves in various widths. For example, the liquid guiding groove <NUM> includes a first liquid guiding sub-groove <NUM> and a second liquid guiding sub-groove <NUM>. The second liquid guiding sub-groove <NUM> locates at an end of the first liquid guiding sub-groove <NUM> away from the liquid storage cavity <NUM>. A shape and an area of a lateral cross section of the first liquid guiding sub-groove <NUM> is invariable. A shape and an area of a lateral cross section of the second liquid guiding sub-groove <NUM> is invariable. The area of the lateral cross section of the second liquid guiding sub-groove <NUM> is greater than the area of the lateral cross section of the first liquid guiding sub-groove <NUM> (a gradient that the width of the liquid guiding groove <NUM> increases along the direction from the air-exchanging groove <NUM> to the liquid storage groove <NUM> is large). A side of the vertical cross section of the first liquid guiding sub-groove <NUM> coincides with a side of the vertical cross section of the second liquid guiding sub-groove <NUM>. The coinciding side is parallel to the length direction of the atomization base <NUM>. The vertical cross section of the first liquid guiding sub-groove1141 and the vertical cross section of the second liquid guiding sub-groove <NUM> are taken by a plane parallel to the width direction of the atomization assembly <NUM>. In the present embodiment, a depth of the first liquid guiding sub-groove <NUM> and a depth of the second liquid guiding sub-groove <NUM> both increase gradually from zero in the width direction and along the direction approaching to the central axis of the atomization assembly <NUM>. In this way, the transition between the liquid guiding groove <NUM> and the shell <NUM> may be smooth, improving assembly reliability and yield.

As shown in <FIG> is a structural schematic view of the atomization base shown in <FIG> from another view angle.

An end of the air-exchanging groove <NUM> is communicated with the liquid storage cavity <NUM>, and the other end of the air-exchanging groove <NUM> is communicated with the liquid guiding groove <NUM>. In this way, when the liquid storage cavity <NUM> is under negative pressure, external air may be introduced into the liquid storage cavity <NUM>, such that air pressure balance between the liquid storage cavity <NUM> and the outside atmosphere may be achieved, allowing the aerosol-generating substrate to be transferred to the atomization core <NUM> smoothly. The air-exchanging groove <NUM> includes a first air-exchanging sub-groove <NUM> and a second air-exchanging sub-groove <NUM>. An end of the first air-exchanging sub-groove <NUM> is communicated with the liquid storage cavity <NUM>, and the other end of the first air-exchanging sub-groove <NUM> is communicated with an end of the second air-exchanging sub-groove <NUM>. The other end of the second air-exchanging sub-groove <NUM> is communicated with the liquid guiding groove <NUM>. A vertical cross section of the first air-exchanging sub-groove <NUM> may be stripped or in other shapes, as long as the first air-exchanging sub-groove <NUM> is communicated with the liquid storage cavity <NUM>. The second air-exchanging sub-groove <NUM> 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 <NUM> is rectangular or "Z" shaped. Of course, the second air-exchanging sub-groove <NUM> may be in any bending shape. An extending direction of the first air-exchanging sub-groove <NUM> is perpendicular to an extending direction of the recesses of the second air-exchanging sub-groove <NUM>. A specific structure of the air-exchanging groove <NUM> can be determined based on demands, as long as the air-exchanging groove <NUM> is capable of exchanging air for the liquid storage cavity <NUM> and allowing the liquid storage cavity <NUM> to be communicated with liquid guiding groove <NUM>. A width of the air-exchanging groove <NUM> is <NUM>-<NUM>, and a depth of the air-exchanging groove <NUM> is <NUM>-<NUM>. In some embodiments, the width of the air-exchanging groove <NUM> is <NUM>, and the depth of the air-exchanging groove <NUM> is <NUM>. 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 <NUM> near the liquid guiding groove <NUM>, and the first connection groove enables the air-exchanging groove <NUM> to be communicated with the liquid guiding groove <NUM>.

The liquid storage groove <NUM> includes a plurality of liquid storage sub-grooves <NUM>. The plurality of liquid storage sub-grooves <NUM> are parallel to each other and are connected with each other from end to end. That is, the liquid storage groove <NUM> is "Z"-shaped. An end of one of the plurality of liquid storage sub-grooves <NUM> near the liquid guiding groove <NUM> is communicated with a second connection groove (not shown in the figure). The second connection groove enables the liquid guiding groove <NUM> to be communicated with the liquid storage groove <NUM>.

It shall be understood that the atomization top base <NUM> and the atomization bottom base <NUM> may be integrally formed as one piece or removably connected with each other. When the atomization top base <NUM> and the atomization bottom base <NUM> are integrally formed as one piece, the air-exchange groove <NUM>, the liquid guiding groove <NUM> and the liquid storage groove <NUM> may be defined and communicated with each other by performing one step of processing.

<FIG> is a structural schematic view of configuring the atomization base shown in <FIG> with a first sealing member.

As shown in <FIG> and <FIG>, the atomization assembly <NUM> further includes a first sealing member <NUM>. The first sealing member <NUM> includes a top wall and a side wall. The top wall of the first sealing member <NUM> is arranged on a top face of the atomization top base <NUM>. The side wall of the first sealing member <NUM> is arranged on an outer surface of the atomization top base <NUM>. That is, the top wall of the first sealing member <NUM> is arranged on a top face of the atomization base <NUM>. The side wall of the first sealing member <NUM> is arranged on an outer face of the atomization base <NUM>. In addition, the side wall of the first sealing member <NUM> covers the air-exchanging groove <NUM> on the outer surface of the atomization top base <NUM>. That is, the side wall of the first sealing member <NUM> and a wall of the air-exchanging groove <NUM> 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 <NUM> near the atomization bottom base <NUM> and a top face of the atomization bottom base <NUM> is greater than or equal to <NUM> and less than or equal to <NUM>. In some embodiments, the gap is <NUM>. It shall be understood that the gap between the first sealing member <NUM> and the top face of the atomization bottom base <NUM> further ensures air exchanging through the air-exchanging channel, such that an air-exchanging channel surrounding the atomization base <NUM> is defined, preventing poor air exchanging caused by blockage due to liquid leakage.

As shown in <FIG> and <FIG>, the recess <NUM> on the atomization bottom base <NUM> 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 <NUM> is defined on the first side wall and the second side wall of the recess <NUM>. A notch (not shown in the figure) is defined on each of the third side wall and the fourth side wall of the recess <NUM>. A surface of the atomization top base <NUM> near the atomization bottom base <NUM> defines a recess (not shown in the figure). The recess on the atomization top base <NUM> and the recess <NUM> are communicated and cooperatively serve as the mounting cavity <NUM>, i.e., a wall of the recess on the atomization top base <NUM> and the wall of the recess <NUM> cooperatively define the mounting cavity <NUM>. The recess on the atomization top base <NUM> 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 <NUM> is defined on the first side wall and the second side wall of the recess on the atomization top base <NUM>. 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 <NUM>. The notches on the third side wall and the fourth side wall of the recess on the atomization top base <NUM> correspond to the notches on the third side wall and the fourth side wall of the recess <NUM>. Walls of the notches on the atomization top base <NUM>, walls of the notches on the atomization bottom base <NUM>, and the shell <NUM> cooperatively define an airflow channel <NUM>. That is, the atomization core <NUM> is partially exposed to the airflow channel <NUM> through the notch in the atomization top base <NUM> and the notch in the atomization bottom base <NUM>, allowing the external air to carry the aerosol generated by the atomization core <NUM> to flow through two sides of the atomization core <NUM> into the air outlet channel <NUM>.

In order to further prevent inhaling the leaked liquid, which is resulted from the leaked liquid flowing along the gap between the atomization base <NUM> and the shell <NUM> to reach the airflow channel <NUM> and further enter the air outlet channel <NUM>, a vertical rib <NUM> is arranged on the side wall of the first sealing member <NUM>, and/or a tab <NUM> is arranged on the atomization top base <NUM>. That is, the vertical rib <NUM> on the side wall of the first sealing member <NUM> is configured to prevent the leaked liquid from flowing into the airflow channel <NUM>. The tab <NUM> on the atomization top base <NUM> is configured to prevent the leaked liquid from flowing into the airflow channel <NUM>. In addition, the tab <NUM> can provide a structural support for the shell <NUM>, improving rigidity of the shell <NUM>, preventing structural rigidity of an ultra-thin product from being reduced, and improving the user experience.

Two vertical ribs <NUM> are arranged on two sides of the first sealing member <NUM> corresponding to the airflow channel <NUM>. The vertical rib <NUM> extends along a height direction of the side wall of the first sealing member <NUM>. An angle between the extending direction of the vertical rib <NUM> and the central axis of the atomization assembly <NUM> is less than <NUM> degrees. That is, the extending direction of the vertical rib <NUM> is not parallel to the thickness direction or the width direction of the atomization assembly <NUM>. In some embodiments, the extending direction of the vertical rib <NUM> is parallel to the extending direction of the central axis of the atomization assembly <NUM>. That is, an angle between the extending direction of the vertical rib <NUM> and the extending direction of the central axis is <NUM> degree. Further, the vertical rib <NUM> contacts the shell <NUM>. In some embodiments, a length of the vertical rib <NUM> in the height direction of the side wall of the first sealing member <NUM> is equal to a height of the side wall of the first sealing member <NUM>. The height direction of the side wall of the first sealing member <NUM> is the same as the length direction of the atomization assembly <NUM>. In a specific embodiment, a portion of the airflow channel <NUM>, which communicates the air outlet channel <NUM> with the atomization cavity <NUM>, refers to two channels located on two sides in the thickness direction of the atomization assembly <NUM>. Therefore, two vertical ribs <NUM> 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 <NUM> are arranged.

The atomization top base <NUM> is arranged with two tabs <NUM> corresponding to two sides of the airflow channel <NUM>. Each tab <NUM> extends along a height direction of the atomization top base <NUM>. In some embodiments, the tab <NUM> extends along an edge line of the notch on the atomization top base <NUM>. In some embodiments, two tabs <NUM> are arranged, one of the two tabs <NUM> extends along a first edge line of the notch on the atomization top base <NUM>, and the other one of the two tabs <NUM> 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 <NUM> and the extending direction of the central axis of the atomization assembly <NUM> is less than <NUM> degrees. That is, the extending direction of the tab <NUM> is not parallel to the thickness direction or the width direction of the atomization assembly <NUM>. In some embodiments, the angle between the extending direction of the tab <NUM> and the length direction of the atomization assembly <NUM> is greater than <NUM> degree and less than <NUM> degrees, such that the tab <NUM> supports the shell <NUM> in the length direction and in the width direction of the atomization assembly <NUM> when the tab <NUM> contacts the shell <NUM>. In this way, an overall strength and rigidity of the shell <NUM> or the atomization assembly <NUM> is improved. A gap between the tab <NUM> and the shell <NUM> is <NUM>-<NUM>. The height direction of the atomization top base <NUM> is the same as the length direction of the atomization assembly <NUM>.

In an embodiment, the portion of the airflow channel <NUM>, which communicates the air outlet channel <NUM> with the atomization cavity <NUM>, refers to two channels located on two sides in the thickness direction of the atomization assembly <NUM>. Therefore, two tabs <NUM> need to be arranged corresponding to one channel and on two sides of the corresponding channel. That is, in the present embodiment, four tabs <NUM> are arranged.

As shown in <FIG>, a projection of the tab <NUM> in the width direction of the atomization assembly <NUM> is at least partially overlapped with a projection of the vertical rib <NUM> in the width direction of the atomization assembly <NUM>. In this way, the airflow channel <NUM> is sealed by the tab <NUM> in combination with the vertical rib <NUM>, avoiding as much as possible the liquid between the atomization base <NUM> and the shell <NUM> from flowing into the airflow channel <NUM>, optimally preventing inhaling the leaked liquid.

While determining the configuration of the atomization assembly <NUM>, in order to facilitate assembly of the product, a gap of <NUM>-<NUM> may be left between the atomization base <NUM> and the shell <NUM>. However, the gap may cause the condensate remaining on the outer wall of the atomization base <NUM> to be drawn into the air outlet channel <NUM> during inhaling, resulting in inhaling the leaked liquid. In the present disclosure, the vertical rib <NUM> is arranged on each of two sides of the first sealing member <NUM> corresponding to the airflow channel <NUM>. The first sealing member <NUM> allows the atomization top base <NUM> to be sealed with an inner surface of the shell <NUM>, and further prevents the liquid on the outer surface of the atomization top base <NUM> from entering the airflow channel <NUM> and further entering the air outlet channel <NUM>, such that a risk of inhaling the leaked liquid is prevented. In the present disclosure, the tab <NUM> is arranged one each of two sides of the atomization top base <NUM> corresponding to the airflow channel <NUM>, and the gap between the tab <NUM> and the shell <NUM> is <NUM>-<NUM> (the gap is left to facilitate assembling the product). In this way, the tab <NUM> further effectively prevents the liquid between the atomization base <NUM> and the shell <NUM> from entering the airflow channel <NUM> and further entering the air outlet channel <NUM>. In addition, the tab <NUM> provides support for the shell <NUM>, reducing deformation caused by pressing the shell <NUM>, improving the structural rigidity of the ultra-thin product.

As shown in <FIG> is an enlarged view of a portion in <FIG>, <FIG> is a schematic view of engagement between the first sealing member and the shell shown in <FIG> is cross sectional view of the atomization assembly shown in <FIG>, taken along the line C-C.

In general, the atomization assembly <NUM> is flat. That is, a cross section of the atomization assembly <NUM> perpendicular to the length direction of the atomization assembly <NUM> 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 <NUM> 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 <NUM>, and a long axis and a short axis of a third sealing member <NUM> may be obtained.

At least one first ring-shaped projection <NUM> is provided on the side wall of the first sealing member <NUM>. The first sealing member <NUM> is in an interference fit with the shell <NUM> through the first ring-shaped projection <NUM>. A shape of the first ring-shaped projection <NUM> matches with a shape of the cross section of the side wall of the first sealing member <NUM>. An interference-fitting amount between one of two vertices of a long axis of the first ring-shaped projection <NUM> and the shell <NUM> is a first value. An interference-fitting amount between one of two vertices of a short axis of the first ring-shaped projection <NUM> and the shell <NUM> 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 <NUM> and the shell <NUM> is less than the interference-fitting amount between the vertex of the short axis of the first ring-shaped projection <NUM> and the shell <NUM>. Further, a difference between the second value and the first value is greater than <NUM> and less than or equal to <NUM>. 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 <NUM> can be prevented from leaking.

In the present embodiment, a lateral cross sectional of the shell <NUM> is elliptical, and correspondingly, the lateral cross section of the first sealing member <NUM> is elliptical. As shown in <FIG>, a region A indicates the vertex of the long axis of the side wall of the first sealing member <NUM>, and a region B indicates the vertex of the short axis of the side wall of the first sealing member <NUM>. It shall be understood that, in order to make the electronic atomization device lighter and thinner, even if the cross section of the shell <NUM> is not elliptical, the cross section of the shell <NUM> still has the long axis and the short axis, and correspondingly, the cross section of the first sealing member <NUM> 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 <NUM> and the shell <NUM> to be less than the interference-fitting amount between the vertex of the short axis of the first ring-shaped projection <NUM> and the shell <NUM>.

Since a strength in the thickness direction of the shell <NUM> of the ultra-thin electronic atomization device is weaker than that of a conventional product (which is not ultra-thin), the first sealing member <NUM>, 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 <NUM> may be reduced. In the present embodiment, the interference-fitting amount between the vertex of the long axis of the first ring-shaped projection <NUM> and the shell <NUM> is less than the interference-fitting amount between the vertex of the short axis of the first ring-shaped projection <NUM> and the shell <NUM>. In this way, a force applied to a position of shell <NUM> corresponding to the vertex of the long axis of the first ring-shaped projection <NUM> is less than a force applied to a position of shell <NUM> corresponding to the vertex of the short axis of the first ring-shaped projection <NUM>. 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 <NUM> 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 <NUM>, may be prevented.

Further, from the vertex of the long axis of the first ring-shaped projection <NUM> to the vertex of the short axis of the first ring-shaped projection <NUM>, the interference-fitting amount between the first ring-shaped projection <NUM> and the shell <NUM> increases gradually along a circumference direction of the first ring-shaped projection <NUM>. That is, from the position of shell <NUM> corresponding to the vertex of the long axis of the first ring-shaped projection <NUM> to the position of shell <NUM> corresponding to the vertex of the short axis of the first ring-shaped projection <NUM>, the force applied to the shell <NUM> increases gradually along a circumference direction of the shell <NUM>. In this way, the force applied to the position of shell <NUM> corresponding to the vertex of the long axis of the first ring-shaped projection <NUM> is minimum, and the force applied to the position of shell <NUM> corresponding to the vertex of the short axis of the first ring-shaped projection <NUM> is maximum. In this way, reduction of the sealing effect caused by deformation of the shell <NUM> 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 <NUM> is prevented. In an embodiment, the first ring-shaped projection <NUM> 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 <NUM> and the shell <NUM> always increases gradually along the circumference direction of the first ring-shaped projection <NUM>.

In an embodiment, the side wall of the first sealing member <NUM> contacts the inner surface of the shell <NUM>, and the interference fit between the shell <NUM> and the first sealing member <NUM> is achieved by arranging the first ring-shaped projection <NUM> on the side wall of the first sealing member <NUM>. The interference-fitting amount between the first sealing member <NUM> and the shell <NUM> is adjusted by adjusting a projection height of the first ring-shaped projection <NUM>.

As shown in <FIG>, the vertical rib <NUM> extends along the height direction of the side wall of the first sealing member <NUM>, and the first ring-shaped projection <NUM> extends along the circumference direction of the side wall of the first sealing member <NUM>. In an embodiment, two first ring-shaped projections <NUM> are arranged on the side wall of the first sealing member <NUM>, and the two first ring-shaped projections <NUM> are spaced apart from each other. An end of the vertical rib <NUM> abuts against one of the two first ring-shaped projection <NUM> away from the liquid storage cavity <NUM>. The other end of the vertical rib <NUM> extends in a direction away from the first ring-shaped projection <NUM>. Each of the two first ring-shaped projections <NUM> has the above interference fitting relationship with the shell <NUM>.

An end of the atomization bottom base <NUM> away from the liquid storage cavity <NUM> is arranged with a third sealing member <NUM>. The third sealing member <NUM> is arranged to extend along a circumference direction of the atomization bottom base <NUM> and contacts the shell <NUM>, enabling the atomization bottom base <NUM> to be sealed with the shell <NUM>. An interference-fitting amount between a vertex of a long axis of the third sealing member <NUM> and the shell <NUM> is less than an interference-fitting amount between a vertex of a short axis of the third sealing member <NUM> and the shell <NUM>. Detailed setting of the interference-fitting amount between the third sealing member <NUM> and the shell <NUM> may be the same as that between the first sealing member <NUM> and the shell <NUM>, 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 <NUM> and the shell <NUM> is less than the interference-fitting amount between the vertex of the short axis of the third sealing member <NUM> and the shell <NUM>. In this way, reduction of the sealing effect caused by deformation of the shell <NUM> is further compensated, and the overall sealing effect of the product is ensured.

As shown in <FIG>, an end the atomization base <NUM> near the air outlet channel <NUM> defines a vent <NUM>. That is, the atomization top base <NUM> defines the vent <NUM>. The two air flowing channels <NUM> locate on two sides of the vent <NUM>. The vent <NUM> is communicated with the air outlet channel <NUM> and the atomization cavity <NUM>, such that the aerosol generated by the atomization core <NUM> flows out through the air outlet channel <NUM>. An end of the air outlet channel <NUM> is embedded in the vent <NUM>. A portion of an inner surface of the vent <NUM> contacts a portion an outer surface of the air outlet channel <NUM>. Another portion of the inner surface of the vent <NUM> is arranged with a liquid guiding rib <NUM>. That is, the inner surface of the another portion of the vent <NUM> that does not contact the outer surface of the air outlet channel <NUM> is arranged with the liquid guiding rib <NUM>. A side of the liquid guiding rib <NUM> away from the inner surface of the vent <NUM> forms a tip. A distance between the tip and the inner surface of the vent <NUM> is a third value H. The third value H is greater than a thickness of a wall of the air outlet channel <NUM>. In an embodiment, the third value H is <NUM>-<NUM> greater than the thickness of the wall of the air outlet channel <NUM>. In some embodiments, the third value H is <NUM> greater than the thickness of the wall of the air outlet channel <NUM>.

In detail, an angle α between a top surface of the liquid guiding rib <NUM> and a side surface of the liquid guiding rib <NUM> is <NUM>°-<NUM>°, forming the tip. In some embodiments, the angle α is <NUM>°. The top surface of the liquid guiding rib <NUM> is an end surface of the liquid guiding rib <NUM> near to the air outlet channel <NUM>. The side surface of the liquid guiding rib <NUM> is another end surface of the liquid guiding rib <NUM> away from the inner surface of the vent <NUM>. The another end surface of the liquid guiding rib <NUM> is connected to the end surface of the liquid guiding rib <NUM> near to the air outlet channel <NUM>. The top surface of the liquid guiding rib <NUM> abuts against an end surface of the air outlet channel <NUM>. That is, the end surface of the liquid guiding rib <NUM> near the air outlet channel <NUM> abuts against the end surface of the air outlet channel <NUM>.

In an embodiment, two liquid guiding ribs <NUM> are arranged symmetrically on the inner surface of the vent <NUM>. Tips of the two liquid guiding ribs <NUM> are spaced apart from each other. In an embodiment, a vertical cross section of the liquid guiding rib <NUM> is triangular.

In the ultra-thin electronic atomization device, the condensate may be generated quickly and may be accumulated in the air outlet channel <NUM> to form a liquid column, resulting in inhaling the leaked liquid. In the present embodiment, the entire air outlet channel <NUM> 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 <NUM> are arranged symmetrically on the inner surface of the vent <NUM>. The distance between the tip of the liquid guiding rib <NUM> and the inner surface of the vent <NUM> is the third value H, and the third value H is greater than the thickness of the wall of the air outlet channel <NUM>. The condensate in the air outlet channel <NUM> may spread out and flow along the surface of the liquid guiding rib <NUM> due to the surface tension after contacting the liquid guiding rib <NUM>. Eventually, the condensate flows back to the atomization core <NUM> and is atomized for a second time. Accumulation of liquid in the air outlet channel <NUM> is eliminated, preventing inhaling the leaked liquid. Further, an angle is formed between the top surface of the liquid guiding rib <NUM> and the side surface of the liquid guiding rib <NUM>, serving as the tip. Two tips of the two liquid guiding ribs <NUM> are spaced apart from each other. That is, a gap is defined between the two liquid guiding ribs <NUM>. In this way, aerosols on two sides of the liquid guiding ribs <NUM> may be mixed easily, improving a taste of aerosols.

In detail, the vent <NUM> 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 <NUM>. In the first region, a shape and a size of the vent <NUM> is invariable. The end of the air outlet channel <NUM> is embedded in the first region. In the second region, a size of the vent <NUM> decreases in a direction away from the air outlet channel <NUM> to form a decreasing port, enabling the condensate in the air outlet channel <NUM> to be collected easily. The liquid guiding rib <NUM> is arranged in the second region. In an embodiment, the vertical cross section of the liquid guiding rib <NUM> is a isosceles triangle. A bottom edge of the isosceles triangle is on the inner surface of the vent <NUM>. An angle between two side edges of the isosceles triangle is <NUM>°-<NUM>°, and in some embodiment, the angle is <NUM>°. One of the two side edges of the isosceles triangle abuts against the end surface of the air outlet channel <NUM>. A length H of the side edge is <NUM>-<NUM> greater than the thickness of the wall of the air outlet channel <NUM>. In some embodiments, the length H of the side edge is <NUM> greater than the thickness of the wall of the air outlet channel <NUM>. The shape and the size of the liquid guiding rib <NUM> can be determined based on demands, as long as the accumulated liquid in the air outlet channel <NUM> can be eliminated, and the aerosols at two sides of the air outlet channel <NUM> can be mixed.

As shown in <FIG> is a structural schematic view of configuring the atomization core and the atomization base shown in <FIG>, and <FIG> is structural schematic view of a second sealing member shown in <FIG>.

As shown in <FIG>, <FIG>, a second sealing member <NUM> is disposed between the top surface of the atomization core <NUM> and the atomization base <NUM>. That is, the second sealing member <NUM> is arranged on a surface of the atomization core <NUM> opposite to the atomization surface <NUM>. The second sealing member <NUM> is disposed between the atomization core <NUM> and the atomization top base <NUM>. The second sealing member <NUM> defines an opening <NUM> to expose a portion of the atomization core <NUM>. The aerosol-generating substrate in the liquid storage cavity <NUM> enters the atomization core <NUM> through the liquid flowing channel <NUM> and the opening <NUM>. In detail, that is, the second sealing member <NUM> is ring shaped. The second sealing member <NUM> includes a first surface and a second surface opposite to the first surface. The first surface of the second sealing member <NUM> contacts the atomization core <NUM>. The second surface of the second sealing member <NUM> contacts the atomization top base <NUM>. A second ring-shaped projection <NUM> is arranged on the first surface and/or the second surface of the second sealing member <NUM>. The second ring-shaped projection <NUM> surrounds a circumference of the opening <NUM>. By arranging the second ring-shaped projection <NUM> on the surface of the second sealing member <NUM>, 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 <NUM> is curved. In some embodiments, the cross section of the second ring-shaped projection <NUM> is an inferior arc. A shape of the cross section of the second ring-shaped projection <NUM> can be determined based on demands, as long as the facial sealing is replaced by linear sealing.

As shown in <FIG> and <FIG>, <FIG> is a perspective view of a power assembly according to an embodiment of the present disclosure, and <FIG> is a cross sectional view of the power assembly shown in <FIG>, taken along the line A-A.

The power supply assembly <NUM> includes a cover <NUM>, a bracket <NUM> and an electrode connection assembly <NUM>. The cover <NUM> has a first receiving cavity (not shown), and the bracket <NUM> is received in the receiving cavity. In the present embodiment, the cover <NUM> further has a second receiving cavity <NUM> communicated with the first receiving cavity for receiving a part of the atomization assembly <NUM>. While the electronic atomization device is in use, an end of the atomization assembly <NUM> is inserted into the second receiving cavity <NUM> of the cover <NUM> and electrically connected to the power supply assembly <NUM>, such that the power supply assembly <NUM> can supply power to the atomization assembly <NUM>. In the present embodiment, a cross section of the cover <NUM> is oval and rod shaped. In other embodiments, the cover <NUM> is not limited to this shape. The cover <NUM> may be cylindrical or column shaped having a squared cross section.

The bracket <NUM> is configured to mount the electrode connection assembly <NUM> and other components of the power supply assembly <NUM>. The electrode connection assembly <NUM>, the other components of the power supply assembly <NUM>, and the bracket <NUM> are all received in the first receiving cavity. The bracket includes a top wall <NUM> and a side wall <NUM> connected to the top wall <NUM>. The electrode connection assembly <NUM> is arranged on the top wall <NUM>. An end of the electrode connection assembly <NUM> near the atomization assembly <NUM> is exposed. In this way, the atomization assembly <NUM> can be electrically connected to the power supply assembly <NUM> through the electrode connection assembly <NUM> when the atomization assembly <NUM> is inserted in the second receiving cavity <NUM>. The side wall <NUM> is arranged on a side of the top wall <NUM> away from the atomization assembly <NUM> and extends along a length direction of the cover <NUM>. In the present embodiment, the side wall <NUM> is arranged on an inner wall of the first receiving cavity.

As shown in <FIG> and <FIG>, <FIG> is a cross sectional view of a portion of the power assembly according to an embodiment of the present disclosure, <FIG> is a structural schematic view of some components in the power assembly after being assembled, and <FIG> 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 <NUM> further includes a first circuit board <NUM>, a second circuit board <NUM>, a reinforcement member <NUM> and a plurality of light emitting elements <NUM>. The first circuit board <NUM>, the second circuit board <NUM>, the reinforcement member <NUM> and the plurality of light emitting elements <NUM> are all arranged on a same side of the side wall <NUM> of the bracket <NUM>.

The first circuit board <NUM> is electrically connected to the electrode connection assembly <NUM>. The first circuit board <NUM> may be arranged along the length direction of the cover <NUM>, such that a surface of the first circuit board <NUM> carrying circuits is parallel to the length direction of the cover <NUM>. The first circuit board <NUM> may be a printed circuit board (PCB). The first circuit board <NUM> is arranged with a control circuit for controlling operation of the atomization assembly <NUM>.

The second circuit board <NUM> is laminated with the first circuit board <NUM>, and the second circuit board <NUM> is disposed between the first circuit board <NUM> and the side wall <NUM> of the bracket <NUM>. Further, as shown in <FIG>, the second circuit board <NUM> includes a body portion <NUM> and a first connection portion <NUM> connected to the body portion <NUM>. The body portion <NUM> is configured to carry the circuit and circuit components. The first connection portion <NUM> is configured to connect to the first circuit board <NUM>. The second circuit board <NUM> 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 <NUM> may be damaged easily and have a short service life.

The body portion <NUM> may be arranged along the length direction of the cover <NUM>, such that a surface of the body portion <NUM> carrying the circuits is parallel to the length direction. The first connection portion <NUM> is arranged on an end of a side of the body portion <NUM> near the atomization assembly <NUM>. Further, the first connection portion <NUM> may be bent towards a side of the first circuit board <NUM> with respect to the body portion <NUM>. A portion of the first connection portion <NUM> is electrically connected to the end of the first circuit board <NUM> away from the atomization assembly <NUM>. In this way, the first circuit board <NUM> is electrically connected to the second circuit board <NUM>, and the connection may be achieved by soldering or the like.

In detail, as shown in <FIG>, the first connection portion <NUM> is bent towards the side of the first circuit board <NUM> at an angle α along a folding line B-B with respect to the body portion <NUM>. The angle α is <NUM>° < α ≤ <NUM>°, such that a projection of the body portion <NUM> on the side wall <NUM> of the bracket <NUM> is partially overlapped with a projection of the first circuit board <NUM> on the side wall <NUM> of the bracket <NUM>, enabling a space occupied by the power supply assembly <NUM> in the length direction to be saved, and improving space utilization in a thickness direction of the power supply assembly <NUM>. In the present embodiment, the bending angle α is <NUM> degrees. That is, the first connection portion <NUM> is bent <NUM> degrees relative to the body portion <NUM> and further connected to the first circuit board <NUM>. In some embodiments, the first connection portion <NUM> may be flat relative to the body portion <NUM> and connected to the first circuit board <NUM>. That is, although the second circuit board <NUM> is bendable, the first connection portion <NUM> is not bent relative to the body portion <NUM> in the present embodiment.

In the present embodiment, the side wall <NUM> of the bracket <NUM>, the body portion <NUM> and the first circuit board <NUM> are arranged along the length direction of the cover <NUM>. Therefore, the projection of the body portion <NUM> on the side wall <NUM> of the bracket <NUM> is partially overlapped with the projection of the first circuit board <NUM> on the side wall <NUM> of the bracket <NUM> by bending the first connection portion <NUM> at an angle towards the side of the first circuit board <NUM> with respect to the body portion <NUM>. 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 <NUM> in the length direction, enabling the electronic atomization device to be miniaturized.

As shown in <FIG> and <FIG>, a plurality of light emitting elements <NUM> are arranged on a surface of a side of the body portion <NUM> away from the first circuit board <NUM> and are electrically connected to the first circuit board <NUM>. The light emitting elements <NUM> 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 <NUM> 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 <NUM> is arranged on the surface of the side of the body portion <NUM> near the first circuit board <NUM>. A projection of the plurality of light emitting elements <NUM> on the second circuit board <NUM> is at least partially overlapped with a projection of the reinforcement member <NUM> on the second circuit board <NUM>. That is, the plurality of light emitting elements <NUM> are arranged on a side of the second circuit board <NUM>, and the reinforcement member <NUM> is arranged on another side of the second circuit board <NUM> and is opposite to the plurality of light emitting elements <NUM>. The reinforcement member <NUM> is configured to reinforce a position of the second circuit board <NUM> where the plurality of light emitting elements <NUM> are arranged. The reinforcement member <NUM> 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 <NUM>. The reinforcement <NUM> may preferably be a steel sheet considering costs and other factors.

In the present disclosure, the reinforcement member <NUM> is arranged on the another side of the second circuit board <NUM> and opposite to the position where the plurality of light emitting elements <NUM> are arranged. The reinforcement member <NUM> reinforces the position of the second circuit board <NUM> where the plurality of light emitting elements <NUM> are arranged. In this way, strength and rigidity of the position of the second circuit board <NUM> where the plurality of light emitting elements <NUM> are arranged may be improved, preventing damage to the light emitting elements <NUM> and improving the service life of the light emitting elements <NUM>.

In an embodiment, a thickness of the reinforcement member <NUM> is <NUM>-<NUM>. The smaller the thickness of the reinforcement member <NUM> is, the smaller the space in the thickness direction of the first capacitance cavity is occupied by the reinforcement member <NUM>. Therefore, the electronic atomization device may be thin and light. The greater the thickness of the reinforcement member <NUM>, the higher the strength and stiffness of the reinforcement member <NUM>. Therefore, a reinforcing effect on the position of the second circuit board <NUM> where the plurality of light emitting elements <NUM> are arranged may be better. Therefore, the thickness of the reinforcement member <NUM> is controlled within a certain range, enabling the reinforcement member <NUM> 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 <NUM> may be <NUM> when allowing the electronic atomization device to be ultra-thin.

In an embodiment, the reinforcement member <NUM> may be fixed to the body portion <NUM>. For example, the reinforcement member <NUM> may be fixed to the body portion <NUM> by a bonding layer, and the bonding layer may be a double-sided tape.

Further, in the present embodiment, as shown in <FIG>, the power supply assembly <NUM> further includes a battery <NUM>. The battery <NUM> is electrically connected to the first circuit board <NUM>, such that the battery <NUM> supplies electrical power to the atomization assembly <NUM>. The battery <NUM> is mounted on the bracket <NUM>. The battery <NUM> is arranged on a side of the first circuit board <NUM> away from the top wall of the bracket <NUM> and arranged on a surface of the body portion <NUM> away from the side wall <NUM> of the bracket <NUM>. A portion of the reinforcement member <NUM> is clamped between the battery <NUM> and the body portion <NUM>, such that the reinforcement member <NUM> is arranged on the body portion <NUM> by tight engagement. The reinforcement member <NUM> is clamped between the battery <NUM> and the body portion <NUM>, and therefore, tight engagement between components in the power supply assembly <NUM> is utilized effectively, further enhancing fixation of the reinforcement member <NUM>.

In an embodiment, as shown in <FIG> and <FIG>, the first connection portion <NUM> has a bending portion 2052a and a straight portion 2052b. The body portion <NUM>, 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 <NUM> near the atomization assembly <NUM>. The bending portion 2052a is bent at an angle α towards the side of the first circuit board <NUM> relative to the body portion <NUM>. The straight portion 2052b extends along the length direction of the cover <NUM> and is electrically connected to the first circuit board <NUM>.

As shown in <FIG>, a portion of the reinforcement member <NUM> is disposed between the battery <NUM> and the body portion <NUM>, and another portion of the reinforcement member <NUM> extends into a space between the first circuit board <NUM> and the body portion <NUM>. The portion of the reinforcement member <NUM> disposed between the battery <NUM> and the body portion <NUM> is clamped by the battery <NUM> and the bracket, such that stability of the reinforcement member <NUM> is maintained. The another portion of the reinforcement member <NUM> extending into the space between the first circuit board <NUM> and the body portion <NUM> may be in suspension to support the body portion <NUM>. An end of the reinforcement member <NUM> near the atomization assembly <NUM> is disposed near the bending portion 2052a to limit a bending position of the second circuit board <NUM>. In some embodiments, the end of the reinforcement member <NUM> near the atomization assembly <NUM> abuts against an inner recessed part of the bending portion 2052a.

As shown in <FIG>, in the present embodiment, the plurality of light emitting elements <NUM>, the body portion <NUM>, the reinforcement member <NUM>, the straight portion 2052b and the first circuit board <NUM> are arranged in successive layers along the thickness direction of the cover <NUM>. Projections of the plurality of light emitting elements <NUM>, the body portion <NUM>, the reinforcement member <NUM>, the straight portion 2052b and the first circuit board <NUM> on the bracket <NUM> are partially overlapped with each other. The bending portion 2052a is connected to the end of the body portion <NUM> near the atomization assembly <NUM> and connected to the end of the straight portion 2052b near the atomization assembly <NUM>. In the present disclosure, various components are arranged in sequence along the thickness direction of the cover <NUM>, and the projections of the various components on the bracket <NUM> 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 <NUM> 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>, the power supply assembly <NUM> further includes a third circuit board <NUM> and a charging interface <NUM>. The third circuit board <NUM> and the charging interface <NUM> are mounted on the bracket <NUM>. The end of the second circuit board <NUM> away from the atomization assembly <NUM> has a second connection portion <NUM>. The second connection portion <NUM> is electrically connected to the third circuit board <NUM>, allowing the battery <NUM> to be electrically connected to the third circuit board <NUM>. The third circuit board <NUM> is arranged with a charging circuit. The battery <NUM> may be electrically connected to the charging interface <NUM> through the charging circuit. The charging interface <NUM> is configured to electrically connect to an external component to allow the external component to charge the battery <NUM>.

As shown in <FIG> is a perspective view of a bracket according to an embodiment of the present disclosure.

As shown in <FIG> and <FIG>, in the present embodiment, the plurality of light emitting elements <NUM> are spaced apart from each other and arranged on the second circuit board <NUM>. The side wall <NUM> of the bracket <NUM> defines a plurality of light shielding holes <NUM>, and the plurality of light shielding holes <NUM> are spaced apart from each other. The plurality of light emitting elements <NUM> are received in the plurality of light shielding holes <NUM>. The plurality of light shielding holes <NUM> prevent light emitted by plurality of light emitting elements <NUM> from interfering with each other and from escaping. In this way, brightness of the plurality of light emitting elements <NUM> may be equivalent with each other. In some embodiments, the number of light emitting elements <NUM> is equal to the number of light shielding holes <NUM>. One light emitting element <NUM> is received in one light shielding hole <NUM>, prevent light emitted by adjacent light emitting elements <NUM> from interfering with each other and from escaping. The light shielding holes <NUM> are arranged to be matched with the light emitting elements <NUM>, such that the light emitting elements <NUM> can be completely received in the light shielding holes <NUM>. That is, each light emitting element <NUM> is embedded in the bracket <NUM>, such that the light emitting elements <NUM> and the side wall <NUM> of the bracket <NUM> overlap with each other in the thickness direction of the power supply assembly <NUM>, effectively utilizing the space of the first receiving cavity in the thickness direction, and saving a space of the power supply assembly <NUM> 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 <NUM>, and simplifying an assembly process correspondingly. Therefore, a manufacturing cost of the power supply assembly <NUM> is reduced. Further, a size of the power supply assembly <NUM> in the thickness direction is reduced, enabling the electronic atomization device to be thin and light.

As shown in <FIG>, the power supply assembly <NUM> also includes a light diffusing layer <NUM>. The light diffusing layer <NUM> is arranged on a side of the bracket <NUM> away from the body portion <NUM>. The light diffusing layer <NUM> covers the plurality of light shielding holes <NUM>. The light diffusing layer <NUM> is configured to guide light of the light emitting elements <NUM> in the light shielding holes <NUM>, and configured to enable the light emitted from the light emitting elements <NUM> 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 <NUM> 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> and <FIG>, a side of the bracket <NUM> away from the body portion <NUM> defines a mounting groove <NUM>. The light diffusing layer <NUM> is received in the mounting groove <NUM>. A thickness of the light diffusing layer <NUM> is the same as a depth of the mounting groove <NUM>. In the present disclosure, the light diffusing layer <NUM> is received in the mounting groove <NUM> of the bracket <NUM>. Therefore, the light diffusing layer <NUM> and the side wall <NUM> of the bracket <NUM> 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 <NUM> in the thickness direction, enabling the electronic atomization device to be thin and light.

Claim 1:
An atomization assembly comprising:
a shell (<NUM>), defining a liquid storage cavity (<NUM>) and a receiving cavity (<NUM>), wherein the liquid storage cavity (<NUM>) is defined to receive an aerosol-generating substrate;
an atomization base (<NUM>), received in the receiving cavity (<NUM>),
characterized in that an outer surface of an end of the atomization base (<NUM>) near the liquid storage cavity (<NUM>) defines an air-exchanging groove (<NUM>), an end of the air-exchanging groove (<NUM>) is communicated with the liquid storage cavity (<NUM>);
an outer surface of an end of the atomization base (<NUM>) away from the liquid storage cavity (<NUM>) defines a liquid storage groove (<NUM>);
an outer surface of a middle portion of the atomization base (<NUM>) defines a liquid guiding groove (<NUM>);
an end of the liquid guiding groove (<NUM>) is communicated with the other end of the air-exchanging groove (<NUM>), the other end of the liquid guiding groove (<NUM>) is communicated with the liquid storage groove (<NUM>);
a width of the end of the liquid guiding groove (<NUM>) near the air-exchanging groove (<NUM>) is less than a width of the end of the liquid guiding groove (<NUM>) near the liquid storage groove (<NUM>); and/or
a depth of the end of the liquid guiding groove (<NUM>) near the air-exchanging groove (<NUM>) is less than a depth of the end of the liquid guiding groove (<NUM>) near the liquid storage groove (<NUM>).