ATOMIZER AND ELECTRONIC ATOMIZATION DEVICE

Description

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to Chinese Patent Application No. 202410942130.0 filed with the China National Intellectual Property Administration on Jul. 15, 2024, the entire contents of which are incorporated herein by reference for all purposes.

TECHNICAL FIELD

This application relates to the field of atomization technologies, and in particular, to an atomizer and an electronic atomization device.

BACKGROUND

Conventional tobacco products (for example, cigarettes, cigars, and the like) burn tobacco during use to produce tobacco smoke. Products that release compounds by heating without combustion as alternatives to these conventional tobacco products have already existed in the prior art. Examples of such products are electronic atomization devices which typically include a heating element and a liquid storage cavity configured to store a liquid substrate. The liquid substrate is heated by the heating element to undergo atomization, thereby generating inhalable vapor or aerosol. The liquid substrate may include nicotine and/or a flavoring agent and/or an aerosol-forming substance (e.g., glycerol).

A known electronic atomization device generally includes a porous ceramic body with numerous micro-pores internally. The porous ceramic body generally has a liquid absorbing surface configured to absorb a liquid substrate and an opposite atomization surface. The atomization surface is provided with a heating element configured to atomize the liquid substrate.

The liquid substrate absorbed on the liquid absorbing surface may be transferred to the atomization surface by using a micro-pore structure inside the porous ceramic body, and the heating element may heat and atomize the liquid substrate to generate aerosol.

Such an electronic atomization device is generally further provided with an air exchange channel. The air exchange channel is configured to replenish air into the liquid storage cavity after the liquid substrate in the liquid storage cavity is depleted, to maintain air pressure balance between the inside and the outside of the liquid storage cavity. When a user puffs, external air can enter the liquid storage cavity through the air exchange channel and generate air bubbles, and the generated air bubbles easily aggregate on the liquid absorbing surface. Excessive aggregation of the air bubbles on the liquid absorbing surface may prevent continuous absorption of the liquid substrate by the liquid absorbing surface, thereby easily leading to a problem of dry burning of the heating element caused by insufficient supply of the liquid substrate to the heating element.

SUMMARY

This application provides an atomizer, to resolve a technical problem of insufficient liquid supply to a heating element easily caused by air bubbles generated during replenishment of external air to a liquid storage cavity.

At least one embodiment of this application provides an atomizer, including:

• • a liquid storage portion defining a liquid storage cavity, the liquid storage cavity being configured to store a liquid substrate, the liquid storage portion having a proximal end and a distal end that are oppositely disposed, a first opening in communication with the liquid storage cavity being disposed at the proximal end, and a second opening in communication with the liquid storage cavity being disposed at the distal end;
  • a suction nozzle assembly, disposed at the proximal end of the liquid storage portion;
  • an atomization element, the atomization element including a first capillary wick element and a heating element bonded to the first capillary wick element, and the first capillary wick element being disposed at the second opening and configured to transfer the liquid substrate to the heating element; and
  • a second capillary wick element disposed at the proximal end of the liquid storage portion and at least partially closing the first opening.

In an embodiment, a surface of the second capillary wick element at least partially defines a capillary channel or a material of the second capillary wick element has a capillary channel therein, the capillary channel providing an air path for air exchange between external air and the liquid storage cavity.

In an embodiment, the second capillary wick element is configured to be capable of adsorbing part of the liquid substrate and providing, in a state of balance between external air pressure and air pressure of the liquid storage cavity, part of the liquid substrate to flow into the capillary channel to seal the air path; and when the external air pressure is greater than the air pressure of the liquid storage cavity, the liquid substrate in the capillary channel flows back to the second capillary wick element under an action of an air pressure difference, so as to open the air path.

In an embodiment, the second capillary wick element is supported on the suction nozzle assembly.

In an embodiment, the second capillary wick element includes a first surface and a second surface opposite to each other, the first surface being in communication with the liquid storage cavity, and the second surface being in communication with an air outlet hole of the suction nozzle assembly.

In an embodiment, the second capillary wick element includes a first surface facing the liquid storage cavity, and the capillary channel extends to the first surface.

In an embodiment, the atomizer further includes a first sealing member configured to seal the first opening, the first sealing member being provided with a vent hole for air discharge from the liquid storage cavity, and the capillary channel being at least partially defined between an outer surface of the second capillary wick element and an inner surface of the vent hole.

In an embodiment, the suction nozzle assembly further includes a tubular body configured to support the second capillary wick element, a tail end of the tubular body extending into the vent hole, at least part of the second capillary wick element being located in the tubular body, a tube wall at the tail end of the tubular body being provided with a first notch, and the first notch, the first sealing member, and the second capillary wick element defining the capillary channel.

In an embodiment, the tubular body includes a first abutting portion, the first sealing member includes a second abutting portion, and the second capillary wick element longitudinally abuts between the first abutting portion and the second abutting portion.

In an embodiment, the tube wall of the tubular body is provided with at least one second notch spaced from the first notch, and a groove in communication with an inner wall of the liquid storage cavity and the second notch is formed on an outer surface of the first sealing member, so as to guide the liquid substrate adhered to the inner wall to the second capillary wick element.

In an embodiment, a plurality of second notches are provided, the plurality of second notches being arranged symmetrically about the first notch.

In an embodiment, the second capillary wick element is made of a cotton fiber, the cotton fiber having a thickness of 1.2 mm to 2 mm.

In an embodiment, an air guide channel is defined between the first sealing member and the tubular body, the air guide channel being in communication with the capillary channel and the external air, and an inner diameter of the air guide channel is greater than that of the capillary channel.

In an embodiment, a bottom wall of the first notch is configured to be inclined.

A suction nozzle assembly, applied to an electronic atomization device, the electronic atomization device being configured to atomize a liquid to generate aerosol, the suction nozzle assembly including:

• • an air outlet hole providing an exit through which the aerosol escapes from the electronic atomization device; and
  • a second capillary wick element, a surface of the second capillary wick element at least partially defining a capillary channel or a material of the second capillary wick element having a capillary channel therein, the capillary channel providing an air path for air exchange between external air and a liquid storage cavity of the electronic atomization device.

An embodiment of this application further provides an electronic atomization device, including the atomizer according to any one of the foregoing embodiments and a power supply assembly configured to provide electric energy for the atomizer.

According to the atomizer provided in the foregoing embodiment, the second capillary wick element is disposed at the proximal end of the liquid storage portion, and the air path for air exchange between the external air and the liquid storage cavity is provided by using the second capillary wick element, so that the air exchange is performed above a liquid level of the liquid substrate, to prevent dry burning due to insufficient liquid supply to the heating element caused by formation of air bubbles during entering of the external air into the liquid storage cavity.

BRIEF DESCRIPTION OF THE DRAWINGS

One or more embodiments are exemplarily described with reference to the accompanying drawings corresponding thereto, and the exemplary descriptions are not to be construed as limiting the embodiments. Elements in the accompanying drawings that have same reference numerals are represented as similar elements, and unless otherwise particularly stated, the figures in the accompanying drawings are not drawn to scale.

FIG. 1 is a schematic three-dimensional view of an atomizer according to an embodiment of this application;

FIG. 2 is a schematic cross-sectional view of the atomizer in FIG. 1 in a direction;

FIG. 3 is a schematic cross-sectional view of a liquid storage portion of the atomizer in FIG. 2 in a direction;

FIG. 4 is a schematic three-dimensional view of the liquid storage portion of the atomizer in FIG. 2 in a direction;

FIG. 5 is a schematic three-dimensional view of an atomization element of the atomizer in FIG. 2 in a direction;

FIG. 6 is a schematic three-dimensional view of a first sealing member of the atomizer in FIG. 2 in a direction;

FIG. 7 is a schematic cross-sectional view of the atomizer in FIG. 2 in another direction;

FIG. 8 is a schematic cross-sectional view of the atomizer in FIG. 2 in yet another direction;

FIG. 9 is a schematic three-dimensional view of a suction nozzle portion of the atomizer in FIG. 2 in a direction;

FIG. 10 is a schematic cross-sectional view of the atomizer in FIG. 2 in another direction; and

FIG. 11 is a schematic structural diagram of an electronic atomization device according to an embodiment of this application.

DETAILED DESCRIPTION

For ease of understanding of this application, this application is described in more detail below with reference to the accompanying drawings and specific embodiments. It is to be noted that, when an element is expressed as “being fixed to”/“being fixedly connected to” another element, the element may be directly on the another element, or one or more intermediate elements may exist between the element and the another element. When an element is expressed as “being connected to” another element, the element may be directly connected to the another element, or one or more intermediate elements may exist between the element and the another element. The terms “upper”, “lower”, “left”, “right”, “inner”, “outer”, and similar expressions used in this specification are only used for an illustrative purpose.

Unless otherwise defined, meanings of all technical and scientific terms used in this specification are the same as those generally understood by a person skilled in the technical field to which this application belongs. The terms used in this specification of this application are only intended to describe objectives of the specific embodiments, but are not intended to limit this application. A term “and/or” used in this specification includes any or all combinations of one or more related listed items.

In addition, the technical features provided in different embodiments of this application to be described below may be combined with each other as long as no conflict occurs.

In the embodiments of this application, the term “mount” including welding, screwing, clamping, bonding, and the like is used to fix or restrict an element or device to a specific position or place, the element or device can remain stationary in the specific position or place or move within a limited range, and after being fixed or restricted to the specific position or place, the element or device can be removed or not be removed, which is not limited in the embodiments of this application.

In addition, terms “first” and “second” are used merely for the purpose of description, and shall not be construed as indicating or implying relative importance or implying a quantity of indicated technical features. Therefore, a feature limited by “first” or “second” may explicitly or implicitly include one or more of the features. In description of this application, “multiple” means at least two, such as two and three unless it is specifically defined otherwise.

An embodiment of this application provides an atomizer 100. As shown in FIG. 1 and FIG. 2, the atomizer 100 includes a suction nozzle assembly 10, a liquid storage portion 20, a base 30, and an atomization element 40. The suction nozzle assembly 10 and the base 30 are respectively fixedly mounted at two ends of the liquid storage portion 20, thereby forming a housing of the atomizer 100. The atomization element 40 is disposed in the liquid storage portion 20 and configured to atomize a liquid substrate to generate aerosol.

An axially extending hollow cylindrical structure 21 is disposed inside the liquid storage portion 20. A hollow region 211 of the hollow cylindrical structure 21 serves as a liquid storage cavity of the atomizer 100 to store a liquid substrate such as an atomizable medicine liquid or an e-cigarette atomized liquid. When the medicine liquid is stored in the liquid storage cavity 211, the atomizer 100 may be used as a medical atomizer for treating respiratory diseases. However, when the e-cigarette atomized liquid is stored in the liquid storage cavity 211, the atomizer 100 may be used as an e-cigarette.

As shown in FIG. 2, FIG. 3, and FIG. 4, the liquid storage portion 20 has a proximal end 22 and a distal end 23 opposite to each other. The suction nozzle assembly 10 is disposed at the proximal end 22 of the liquid storage portion 20. The base 30 is disposed at the distal end 23 of the liquid storage portion 20. The proximal end 22 is provided with a first opening 221 in communication with the liquid storage cavity 211. The first opening 221 is used as a liquid injection port for injecting the liquid substrate into the liquid storage cavity 211. A first sealing member 50 is further disposed at the proximal end 22. The first sealing member 50 is configured to seal the first opening 221. The base 30 at least partially extends into the liquid storage portion 20 through an opening at the distal end 23, thereby providing support for parts in the liquid storage portion 20. The hollow cylindrical structure 21 and an inner wall of the liquid storage portion 20 define a first airflow channel 24 and a second airflow channel 25. The aerosol generated by the atomization element 40 by atomizing the liquid substrate may flow into the suction nozzle assembly 10 through the first airflow channel 24 and the second airflow channel 25, and a user may inhale the aerosol through an air outlet hole 11 of the suction nozzle assembly 10.

As shown in FIG. 5, the atomization element 40 includes a first capillary wick element 41 and a heating element 42 bonded to the first capillary wick element 41. The first capillary wick element 41 may be made of a rigid capillary structure such as porous ceramics, porous glass-ceramics, or porous glass, with a large quantity of micro-pore structures inside. The first capillary wick element 41 may roughly have, but is not limited to, a block structure in this embodiment, and according to a use situation, includes a liquid absorbing surface 411 and an atomization surface 412 that are oppositely disposed along a length direction of the atomizer 100, that is, upper and lower surfaces of the block-shaped first capillary wick element 41 shown in FIG. 4. The liquid absorbing surface 411 faces a liquid outlet 2111 and is configured to absorb the liquid substrate. The heating element 42 is bonded to the atomization surface 412 and is configured to heat and atomize the liquid substrate. The liquid substrate may flow to the liquid absorbing surface 411 by using the liquid outlet 2111, and flow to the atomization surface 412 by using the micro-pore structures inside the first capillary wick element 41.

The heating element 42 is preferably formed on the atomization surface 412 by mixing conductive raw material powder with a printing auxiliary to form a slurry and sintering after printing according to a suitable pattern, so that an entire surface or most of the surface thereof is closely bonded to the atomization surface 412, which has effects such as high atomization efficiency, less heat loss, and dry-burn prevention or dry-burn reduction. In some implementations, the heating element 42 may be in various other structural forms. For example, the heating element 42 may be a sheet-shaped heating body, or in other forms such as a heating mesh, a disc-shaped heating body formed by a spiral heating wire, or a heating film, that is bonded to the atomization surface 412 and has a specific pattern. In some examples, the specific pattern may be a serpentine shape. In some embodiments, the heating element 42 may be made of suitable materials including nickel, iron, stainless steel, nickel-iron alloys, nickel-chromium alloys, iron-chromium-aluminum alloys, or metallic titanium, and the like. Therefore, after the liquid substrate is transferred to the atomization surface 412, the heating element 42 of the atomization surface 412 may heat and atomize the liquid substrate, and release, from the atomization surface 412, the aerosol generated after atomization.

As shown in FIG. 2 and FIG. 3, the liquid storage cavity 211 includes a side wall 2112 and a bottom wall 2113. The bottom wall 2113 is provided with a second opening 2111 in communication with the liquid storage cavity 211. As can be seen from FIG. 2 and FIG. 3, the second opening 2111 is disposed at the distal end 23 of the liquid storage portion 20, and the second opening 2111 is used as a liquid outlet for the liquid substrate in the liquid storage cavity 211 to flow to the atomization element 40. An extension wall 2114 extends from the bottom wall 2113 along a length direction of the atomizer 100. The extension wall 2114 and the bottom wall 2113 define a first accommodating cavity 212. The atomization element 40 is accommodated in the first accommodating cavity 212. To prevent leakage of the liquid substrate by using an assembly gap between the atomization element 40 and an inner wall of the first accommodating cavity 212, a second sealing member 60 is disposed between the atomization element 40 and the first accommodating cavity 212. The second sealing member 60 is provided with a second accommodating cavity. The atomization element 40 is closely fitted into the second accommodating cavity. The second sealing member 60 may be a soft rubber member such as silicone or rubber, so that the second sealing member 60 can be clamped between the atomization element 40 and an inner wall of the second accommodating cavity 212 and then the second sealing member 60 is sealed between the atomization element 40 and the inner wall of the first accommodating cavity 212. The second sealing member 60 is provided with a through hole for the liquid substrate to flow through. The through hole is in communication with the liquid outlet 2111. The liquid substrate flows to the atomization element 40 by using the liquid outlet 2111 and the through hole.

As shown in FIG. 2, the base 30 is provided with an air inlet 31 and an electrode hole. A conductive electrode 32 is inserted into the electrode hole. One end of the conductive electrode 32 is exposed outside the housing of the atomizer 100 to facilitate an electrical connection with a power supply mechanism matching the atomizer 100, while the other end extends to the atomization surface 412 of the first capillary wick element 41 to facilitate an electrical connection with the heating element 42 on the atomization surface 412, so that the power supply mechanism can supply electric energy required for heating to the heating element 42 of the atomizer 100 by using the conductive electrode 32. It may be understood that the conductive electrode 32 includes two electrode columns serving as positive and negative poles for current conduction, and an end portion of the conductive electrode 32 abuts against the atomization element 40 to provide a support, thereby positioning the atomization element within the first accommodating cavity 212.

Still referring to FIG. 2, a third sealing member 70 is supported on the base 30. The third sealing member 70 may be made of a flexible material such as silicone or rubber. The third sealing member 70 is in interference fit with the inner wall of the liquid storage portion 20, so as to seal the distal end 23 of the liquid storage portion 20. The third sealing member 70 and the atomization element 40 are oppositely disposed and define an atomization cavity 413, and the aerosol generated by the atomization element 40 by heating and atomizing the liquid substrate is released here.

When the user puffs by using the atomizer 100, external cold air enters the atomization cavity 413 and is mixed with high-temperature aerosol in the atomization cavity 413. Part of the high-temperature aerosol that encounters the external cold air may condense to form condensate and drip down. The seal formed by the third sealing member 70 can prevent leakage of the dripping condensate from the distal end 23 of the liquid storage portion 20.

The air inlet hole 31 provides an airflow inlet for the external air to enter the atomizer 100, a ventilation hole 71 is formed on the third sealing member 70, and the ventilation hole 71 is in communication with the air inlet hole 31 and the atomization cavity 413, so that when the user puffs, negative pressure may be generated inside the atomization cavity 413, causing the external air to flow to the atomization cavity 413 by using the air inlet hole 31 and the ventilation hole 71, then, carry the aerosol in the atomization cavity 413 into the first airflow channel 24 and the second airflow channel 25, flow into the suction nozzle assembly 10 by using the first airflow channel 24 and the second airflow channel 25, and finally, exit the atomizer 100 by using the air outlet hole 11 of the suction nozzle assembly 10 for the user to inhale, thereby forming a complete airflow path of the atomizer 100, as shown by an arrow path R in FIG. 2.

Still referring to FIG. 6, FIG. 7, FIG. 8, and FIG. 10, a vent hole 51 is formed on the first sealing member 50. The vent hole 51 is configured to allow air within the liquid storage cavity 211 to be discharged by using the vent hole 51 when the first sealing member 50 is assembled to the liquid storage portion 20 to seal the first opening 221, thereby preventing leakage of the liquid substrate in the liquid storage cavity 211 caused by extrusion of the air in the liquid storage cavity 211 during the assembly of the first sealing member 50.

The suction nozzle assembly 10 includes a tubular body 12 extending in the vent hole 51, and the tubular body 12 is in interference fit with the vent hole 51, thereby sealing the vent hole 51. The tubular body 12 is disposed in a hollow manner. Further, a second capillary wick element 80 may be disposed in the tubular body 12, so that at least part of the second capillary wick element 80 closes the first opening 221. The second capillary wick element 80 may be assembled in the tubular body 12 by interference fit with an inner wall of the tubular body 12. A tube wall of the tubular body 12 is provided, along a longitudinal direction, with a first notch 121 extending to the liquid storage cavity 211. Since the first sealing member 50 and the second capillary wick element 80 are respectively located on two sides of the first notch 121, the first sealing member 50, the first notch 121, and the second capillary wick element 80 may define a capillary channel 1211. That is, at least part of the capillary channel 1211 is defined by an outer surface of the second capillary wick element 80 and an inner surface of the vent hole 51.

The capillary channel 1211 is in communication with the liquid storage cavity 211 and external air, so as to provide an air path through which the external air enters the liquid storage cavity 211, thereby balancing air pressure between the liquid storage cavity 211 and the external air, to prevent dry burning of the atomization element 40 due to insufficient liquid supply caused by generation of negative pressure in the liquid storage cavity 211 as the liquid substrate in the liquid storage cavity 211 is depleted.

The capillary channel 1211 is in communication with the second capillary wick element 80. The second capillary wick element 80 stores part of the liquid substrate. When the user does not use the atomizer 100 to inhale the aerosol, the air pressure between the liquid storage cavity 211 and the external air is in a balanced state. The liquid substrate stored in the second capillary wick element 80 flows into the capillary channel 1211 under a capillary force of the capillary channel 1211, so that the air path through which the external air enters the liquid storage cavity 211 is sealed, preventing leakage of the liquid substrate in the liquid storage cavity 211 by using the air path.

However, when the user uses the atomizer 100 to inhale the aerosol, the atomization element 40 heats the liquid substrate to generate aerosol, and the liquid substrate in the liquid storage cavity 211 is depleted accordingly. As a result, a gas volume in the liquid storage cavity 211 increases, resulting in decreased air pressure in the liquid storage cavity 211. In this case, air pressure of the external air may be greater than that in the liquid storage cavity 211. That is, there is an air pressure difference between the external air and the liquid storage cavity 211. Under the action of the air pressure difference, the liquid substrate in the capillary channel 1211 may flow back to the second capillary wick element 80, then the air path through which the external air enters the liquid storage cavity 211 is opened, and the external air can enter the liquid storage cavity 211 to balance the air pressure between the liquid storage cavity 211 and the external air, so that the liquid substrate in the liquid storage cavity 211 can continue to smoothly flow to the atomization element 40.

The second capillary wick element 80 is made of a porous material, for example, any one of a flexible cotton fiber, non-woven fabric, and a glass fiber rope; or any one of porous ceramics, porous glass-ceramics, and porous glass. Therefore, the second capillary wick element 80 may be water-absorbing, so as to absorb and hold the liquid substrate. In a further preferred embodiment, the second capillary wick element 80 is made of a flexible cotton fiber material, so that more of the liquid substrate can be absorbed in the second capillary wick element 80, and the liquid substrate can smoothly flow back and forth between the capillary channel 1211 and the second capillary wick element 80 under the action of the capillary force and the air pressure difference.

Alternatively, in some embodiments, for the air path for air exchange between the liquid storage cavity 211 and the external air, the capillary channel may be formed by a micro-pore structure or a void inside the second capillary wick element 80, and the liquid storage cavity 211 and the external air achieve air exchange by using the capillary channel inside the second capillary wick element 80.

In this embodiment, the second capillary wick element 80 is disposed at a proximal end of the liquid storage portion 20, so that the second capillary wick element 80 is located above a liquid level of the liquid substrate, and further, the external air enters the liquid storage cavity 211 from above the liquid level of the liquid substrate by using a capillary channel defined or formed by the second capillary wick element 80. In this manner, compared with that the external air enters the liquid storage cavity from below the liquid level of the liquid substrate, aggregation of air bubbles, which are formed in the liquid substrate when the external air enters the liquid substrate, on the first capillary wick element 41 can be prevented, thereby preventing dry burning of the heating element 42 due to insufficient liquid supply.

In some embodiments, as shown in FIG. 11, the second capillary wick element 80 includes a first surface 81 disposed towards the liquid storage cavity 211 and a second surface 82 opposite to the first surface 81. The first surface 81 is in communication with the liquid storage cavity 211, and the second surface 82 is in communication with the air outlet hole 11 of the suction nozzle assembly 10, so that the external air can enter the liquid storage cavity 211 by using the air outlet hole 11 and the second capillary wick element 80.

Moreover, in some embodiments, the capillary channel 1211 extends to the first surface 81, so that the liquid substrate flowing back from the capillary channel 1211 to the second capillary wick element 80 is adhered to and suspended from the first surface 81. Further, when the air pressure of the liquid storage cavity 211 and the air pressure of the external air are restored to balance, the liquid substrate suspended from the first surface 81 can smoothly re-flow into the capillary channel 1211 under the action of the capillary force of the capillary channel 1211.

In some embodiments, as shown in FIG. 2 and FIG. 6, a first abutting portion 122 transversely extends from the inner wall of the tubular body 12, a second abutting portion 52 is formed on the first sealing member 50, and the first abutting portion 122 and the second abutting portion 52 are oppositely disposed along a longitudinal direction, so that the second capillary wick element 80 abuts between the first abutting portion 122 and the second abutting portion 52 in the longitudinal direction, thereby further retaining the second capillary wick element 80 in the tubular body 12.

Further, in some embodiments, when the second capillary wick element 80 is made of a flexible cotton fiber, the second capillary wick element 80 abutting between the first abutting portion 122 and the second abutting portion 52 has a thickness of 1.2 mm to 2 mm, so that the second capillary wick element 80 can absorb and hold the liquid substrate with a suitable liquid amount. Further, when the air pressure of the liquid storage cavity 211 is balanced with the air pressure of external air, the liquid substrate with a suitable liquid amount on the second capillary wick element 80 can flow into the capillary channel 1211, so as to achieve sealing of the air path.

In some embodiments, as shown in FIG. 6 and FIG. 11, the first sealing member 50 may be any one of soft rubber members such as silicone, rubber, and latex. Further, when the first sealing member 50 is assembled at the first opening 221, the first sealing member 50 elastically abuts against the inner wall of the liquid storage cavity 211, to seal the first opening 221. The tube wall of the tubular body 12 is provided with at least one second notch 123 spaced from the first notch 121. At the same time, an outer surface of the first sealing member 50 is provided with a groove 53. The groove 53 is in communication with the inner wall of the liquid storage cavity 211 and the second notch 123, so as to guide the liquid substrate adhered to the inner wall of the liquid storage cavity 211 to the second capillary wick element 80, thereby replenishing the liquid substrate to the second capillary wick element 80. It may be easily understood that, in this case, the second capillary wick element 80 is made of a porous material, so that the porous material 80 absorbs, by water absorption by using the groove 53, the liquid substrate adhered to the inner wall of the liquid storage cavity 211. Further, in a preferred embodiment, the second capillary wick element 80 is made of a flexible cotton fiber.

In addition, in some embodiments, as shown in FIG. 10, a plurality of second notches 123 are provided. The plurality of second notches 123 are symmetrically arranged about the first notch 121, so as to guide more of the liquid substrate adhered to the inner wall of the liquid storage cavity 211 to the second capillary wick element 80.

In some embodiments, as shown in FIG. 7, an air guide channel 54 is formed between the tubular body 12 and the first sealing member 50. The air guide channel 54 is in communication with the capillary channel 1211 and the external air. An inner diameter of the air guide channel 54 is greater than that of the capillary channel 1211, and the external air can be smoothly introduced into the capillary channel 1211 by disposing the air guide channel 54 with a larger inner diameter.

Further, in some embodiments, as shown in FIG. 7, a bottom wall 1212 of the first notch 121 is inclined, so that an inclined section 55 is formed between the air guide channel 54 and the capillary channel 1211. After the outside air enters the air guide channel 55, the outside air may be further smoothly guided into the capillary channel 1211 by using the inclined section 55.

It is to be noted that, the capillary channel 1211 is not limited to the structure described in the foregoing embodiment. In some other embodiments, the capillary channel 1211 may alternatively be formed in another structural manner, provided that when the air pressure between the liquid storage cavity 211 and the external air is in a balanced state, the liquid substrate stored in the second capillary wick element 80 flows into the capillary channel 1211 under the action of the capillary force of the capillary channel 1211, thereby sealing the air path through which the external air enters the liquid storage cavity 211. The air pressure of the external air may be greater than that in the liquid storage cavity 211. Under the action of the air pressure difference, the liquid substrate in the capillary channel 1211 may flow back to the second capillary wick element 80, so as to open the air path through which the external air enters the liquid storage cavity 211.

An embodiment of this application provides an electronic atomization device 200, which, referring to FIG. 12, may include an atomizer 100 storing a liquid substrate and atomizing the liquid substrate to generate aerosol, and a power supply assembly 200 supplying power to the atomizer 100.

In an optional implementation, for example, as shown in FIG. 12, the power supply assembly 200 includes a receiving cavity 210 arranged at an end in a length direction and configured to receive and accommodate at least part of the atomizer 100, and an electrical contact 220 at least partially exposed from a surface of the receiving cavity 210 and configured to form an electrical connection with an electrode 32 of the atomizer 100 to supply power to the atomizer 100 when at least part of the atomizer 100 is received and accommodated in the power supply assembly 200.

A sealing member 230 is disposed in the power supply assembly 200, and at least part of an internal space of the power supply assembly 200 is separated by using the sealing member 230, to form the foregoing receiving cavity 210. In the preferred implementation shown in FIG. 12, the sealing member 230 is configured to extend in a cross-section direction of the power supply assembly 200, and is preferably made of a flexible material such as silicone to prevent flowing of the liquid substrate, which seeps from the atomizer 100 to the receiving cavity 210, to components such as a controller 240 and a sensor 250 inside the power supply assembly 200.

In the preferred implementation shown in FIG. 12, the power supply assembly 200 further includes a battery cell 260 facing away from the other end of the receiving cavity 210 in the length direction and configured to supply power; and a controller 240 disposed between the battery cell 260 and the receiving cavity 210. The controller 240 operably guides a current between the battery cell 260 and the electrical contact 220.

In use, the power supply assembly 200 includes a sensor 250 configured to sense inhalation airflow generated when the user puffs by using the air outlet 111 of the atomizer 100, so that the controller 240 controls, according to a detection signal of the sensor 250, the battery cell 260 to output a current to the atomizer 100.

Further, in the preferred implementation shown in FIG. 12, a charging interface 270 is disposed at another end of the power supply assembly 200 facing away from the receiving cavity 210, and is configured to supply power to the battery cell 260.

Finally, it should be noted that the foregoing embodiments are merely used for describing the technical solutions of this application rather than limiting this application. Under the ideas of this application, the technical features in the foregoing embodiments or different embodiments may be combined, the steps may be performed in any order, and many other changes in different aspects of this application also exist as described above, and these changes are not provided in detail for simplicity. Although this application is described in detail with reference to the foregoing embodiments, it should be appreciated by a person of ordinary skill in the art that modifications may still be made to the technical solutions described in the foregoing embodiments, or equivalent replacements may be made to the part of the technical features. Such modifications or replacements do not make the essence of corresponding technical solutions depart from the scope of the technical solutions of the embodiments of this application.