ATOMIZER AND ELECTRONIC ATOMIZATION DEVICE

Description

RELATED APPLICATIONS

This application is a continuation application of International application No. PCT/CN2024/086540, filed on Apr. 8, 2024, which claims priority to Chinese Patent Application No. 2023106527120, filed on Jun. 2, 2023. The entire disclosure of the prior applications are hereby incorporated by reference.

TECHNICAL FIELD

This disclosure relates to the field of atomizers, including to an atomizer and an electronic atomization device including the atomizer.

BACKGROUND

A conventional electronic atomization device mainly includes an atomizer and a power supply assembly configured to supply power to the atomizer. When power is supplied to the atomizer, an atomization core in the atomizer can heat and atomize a liquid atomization medium to generate aerosols for inhalation.

A conventional atomizer usually locks the atomization medium by using negative pressure of an atomization medium tank, to prevent liquid leakage of the atomizer. However, in a late stage of inhalation or in a case that an ambient temperature experienced by the atomizer changes sharply, use of the conventional negative pressure still cannot reliably prevent liquid leakage.

SUMMARY

According to an aspect, an atomizer and an electronic atomization device including the atomizer are provided.

An atomizer is provided, including: a first liquid storage tank, including first internal space configured to accommodate an atomization medium and an atomization cavity formed inside the first liquid storage tank; a second liquid storage tank, including second internal space configured to accommodate a sacrificial medium, where the second liquid storage tank is provided with a first vent hole configured to allow air to enter the second internal space, a viscosity of the sacrificial medium is less than a viscosity of the atomization medium, the second internal space is in communication with the first internal space through a connection channel, and the connection channel is internally provided with a separator configured to allow the air to pass through and prevent the atomization medium and the sacrificial medium from passing through; an atomization core, arranged in the atomization cavity and configured to heat the atomization medium; and a leaked liquid collecting tank, configured to collect the sacrificial medium leaked from the second internal space through the first vent hole.

In an aspect, the second liquid storage tank is arranged on a side wall of the first liquid storage tank, the connection channel includes a through hole formed on the side wall, and the separator is arranged in the through hole.

In an aspect, the second liquid storage tank is spaced apart from the first liquid storage tank, the connection channel includes a pipeline connecting the second liquid storage tank to the first liquid storage tank, and the separator is arranged in the pipeline.

In an aspect, the separator includes at least one of the following: a porous polytetrafluoroethylene film, a porous carbon film, a porous polyvinylidene fluoride film, a porous expanded polytetrafluoroethylene film, and a carbon fiber film.

In an aspect, the leaked liquid collecting tank includes third internal space, where the third internal space is in communication with the atomization cavity and is in communication with the second internal space through the first vent hole.

In an aspect, flow resistance of the first vent hole to the sacrificial medium is less than flow resistance experienced by the atomization medium when flowing from the first internal space to the atomization core.

In an aspect, the first liquid storage tank includes a first end and a second end that are opposite to each other, the atomization cavity is provided adjacent to the first end, and the first liquid storage tank is further provided with an airflow channel that is in communication with the atomization cavity and extends from the atomization cavity to the second end.

In an aspect, the second liquid storage tank is arranged on a side wall of the first liquid storage tank between the first end and the second end, and the second liquid storage tank includes a third end adjacent to the first end and a fourth end adjacent to the second end.

In an aspect, the connection channel is provided adjacent to the second end and the fourth end, and the first vent hole is provided at the third end.

In an aspect, the leaked liquid collecting tank is arranged adjacent to the first end and the third end, includes third internal space, is provided with an air inlet in communication with the atomization cavity, and is provided with a second vent hole communicating the third internal space with the atomization cavity.

In an aspect, the second vent hole is provided on a side wall of the leaked liquid collecting unit adjacent to the atomization cavity or a side wall of the leaked liquid collecting unit adjacent to the air inlet.

In an aspect, a liquid absorbing member configured to absorb the leaked sacrificial medium is arranged in the leaked liquid collecting tank.

In an aspect, the liquid absorbing member includes liquid absorbing cotton.

In an aspect, a viscosity of the atomization medium at 25° C. ranges from 1000 cps to 10000000 cps.

In an aspect, a viscosity of the sacrificial medium at 25° C. ranges from 1 cps to 200 cps.

According to a second aspect of the present disclosure, an electronic atomization device is provided, including the atomizer according to any one of the foregoing examples.

Details of one or more examples of this disclosure are provided in the accompanying drawings and descriptions below. Other features, objectives, and advantages of this disclosure become apparent from this specification, the accompanying drawings, and the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and other features, advantages, and aspects of various examples of the present disclosure will become more apparent with reference to the accompanying drawings and the following detailed description. Same or similar reference numerals in the accompanying drawings represent same or similar elements. In the accompanying drawings:

FIG. 1 is a schematic cross-sectional view of an atomizer according to an example.

FIG. 2 shows an air flow path of the atomizer shown in FIG. 1 during inhalation.

FIG. 3 shows an air flow path of the atomizer shown in FIG. 1 when inhalation is stopped.

FIG. 4 is a schematic cross-sectional view of an atomizer according to another example.

DESCRIPTION OF REFERENCE NUMERALS

• • 100: Atomizer;
  • 1: First liquid storage tank;
  • 10: Atomization medium;
  • 11: First internal space;
  • 111: First end;
  • 112: Second end;
  • 12: Atomization cavity;
  • 13: Airflow channel;
  • 3: Atomization core;
  • 2: Second liquid storage tank;
  • 20: Sacrificial medium;
  • 21: Second internal space;
  • 22: First vent hole;
  • 23: Third end;
  • 24: Fourth end;
  • 4: Connection channel;
  • 41: Through hole;
  • 42: Separator;
  • 5: Leaked liquid collecting tank;
  • 51: Third internal space;
  • 52: Second vent hole;
  • 53: Liquid absorbing member;
  • 6: Air inlet; and
  • 701-704: Arrows.

DETAILED DESCRIPTION

Examples of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the examples of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure may be implemented in various forms and is not limited to the examples described herein. On the contrary, these examples are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to a person skilled in the art.

The term “include” and variants thereof used in this specification represent open-ended inclusion, that is, “including but not limited to”. Unless otherwise stated, the term “or” represents “and/or”. The term “based on” represent “at least partially based on”. The terms “an exemplary embodiment” and “an embodiment” represent “at least one example”. The term “another embodiment” represents “at least one additional example”. The terms “first”, “second”, and the like may indicate different objects or a same object.

As described above, a conventional atomizer usually locks an atomization medium by using negative pressure of an atomization medium tank, to prevent liquid leakage of the atomizer. After the conventional atomizer is filled with the atomization medium, the atomization medium may be absorbed through a porous atomization core to generate specific negative pressure in the atomization medium tank to lock the atomization medium, or a liquid storage groove may be provided in the atomization core to store the atomization medium leaked from the atomizer, to improve the negative pressure in the atomization medium tank to lock the atomization medium. The liquid storage groove configured to store the leaked atomization medium provided in the atomization core may be referred to as a direct liquid type liquid storage groove in this specification.

However, when the atomizer is transported between different locations with a huge ambient temperature difference, an ambient temperature experienced by the atomizer changes sharply, and a large positive pressure difference is generated between pressure in the atomization medium tank and pressure in the airflow channel due to this temperature change. This positive pressure difference squeezes the atomization medium out of the atomization medium tank, and unless a sufficient quantity of direct liquid type liquid storage grooves are provided in the atomization core, the atomization medium may still be leaked. In addition, in a case of large-capacity and long-time inhalation, in a late stage of an inhalation cycle, air space without the atomization medium in the atomization medium tank increases. As a result, an amount of atomization media consumed by each puff of inhalation is insufficient to cause a change of the air space. Consequently, in the late stage of inhalation, air pressure in the atomization medium tank is insufficient to lock the atomization medium, leading to a phenomenon of liquid leakage during inhalation. In addition, in the late stage of the inhalation cycle, for example, in a case that the atomization medium tank has an atomization medium filling capacity of 2 ml and a remaining 0.6 ml of atomization media or fewer atomization media are inhaled, the atomizer is especially prone to an impact of an ambient temperature fluctuation, leading to a liquid leakage problem. Consequently, in the late stage of inhalation or in the case that the ambient temperature experienced by the atomizer changes sharply, use of the negative pressure still cannot reliably prevent liquid leakage. The liquid leakage problem causes a waste of a high-viscosity atomization medium, and may block an inhalation channel. As a result, the atomizer cannot operate normally.

Based on this, examples of the present disclosure provide an atomizer and an electronic atomization device including the atomizer. In the atomizer, a vent medium tank in communication with an atomization medium tank is arranged, and a leaked liquid collecting tank in communication with the vent medium tank is arranged. Through such arrangement, in a late stage of inhalation or in a case that an ambient temperature experienced by the atomizer increases sharply, a sacrificial medium in the vent medium tank of the atomizer is first leaked to the leaked liquid collecting tank, and an atomization medium in the atomization medium tank is not leaked, so that a waste of a high-viscosity atomization medium can be avoided, and a problem of a blocked inhalation channel caused by liquid leakage can be prevented, thereby ensuring that the atomizer can operate reliably during inhalation. In addition, compared with a conventional ventilation solution through the atomization medium, bubbles entering a second internal space through a first vent hole can rise quickly in the sacrificial medium, to resolve a problem of ventilation difficulty through the atomization medium.

A principle of the present disclosure is described in detail below with reference to FIG. 1 to FIG. 4. Referring to FIG. 1, FIG. 1 is a schematic cross-sectional view of an atomizer according to an example of the present disclosure.

As shown in FIG. 1, the atomizer 100 described herein generally includes a first liquid storage tank 1, a second liquid storage tank 2, an atomization core 3, and a leaked liquid collecting tank 5. The first liquid storage tank 1 is configured to accommodate an atomization medium 10 with a high viscosity. The atomization medium 10 may include e-liquid, medicinal liquid, or the like. In a case that the atomization medium 10 is e-liquid, the first liquid storage tank 1 may also be referred to as an e-liquid tank. The second liquid storage tank 2 is configured to accommodate a sacrificial medium 20 with a low viscosity. The sacrificial medium 20 may also be referred to as a vent medium in this specification. The viscosity of the sacrificial medium 20 is less than the viscosity of the atomization medium 10, and the sacrificial medium has low surface tension.

The leaked liquid collecting tank 5 is configured to collect the sacrificial medium 20 leaked from the second liquid storage tank 2. During inhalation or in a case that the ambient temperature increases sharply, the sacrificial medium 20 in the second liquid storage tank 2 may be first leaked into the leaked liquid collecting tank 5, ensuring that the atomization medium 10 in the first liquid storage tank 1 is not leaked.

In an example, a viscosity of the atomization medium 10 at 25° C. ranges from 1000 cps to 10000000 cps. In other examples, the viscosity of the atomization medium 10 at 25° C. may be higher or lower, for example, lower than 1000 cps or higher than 10000000 cps.

In an example, a viscosity of the sacrificial medium 20 at 25° C. ranges from 1 cps to 200 cps. In other examples, the viscosity of the sacrificial medium 20 at 25° C. may be higher or lower, for example, lower than 1 cps or higher than 200 cps. In an example, the sacrificial medium 20 includes at least one of the following: water, an aqueous solution, an ethanol solution, propylene glycol (PG), and glycerol (VG). It should be understood that, the foregoing materials are merely examples of the sacrificial medium 20, and any other low-cost liquid whose viscosity is less than that of the atomization medium 10 may be used as the sacrificial medium 20.

It should be noted that, numbers and values that may be mentioned above and in other parts of the present disclosure are exemplary, and are not intended to limit the scope of the present disclosure in any manner. Any other suitable number or value is possible.

The viscosity of the sacrificial medium 20 is less than the viscosity of the atomization medium 10, and costs of the sacrificial medium is far lower than that of the atomization medium 10.

The sacrificial medium 20 in the second liquid storage tank 2 is first leaked into the leaked liquid collecting tank 5, so that leakage of the atomization medium 10 in the first liquid storage tank 1 can be prevented, thereby avoiding a waste of costs caused by leakage of the atomization medium 10, and resolving a problem of a blocked inhalation channel caused by liquid leakage, to ensure reliable operation of the atomizer 100.

In an example, as shown in FIG. 1, the first liquid storage tank 1 includes first internal space 11 and an atomization cavity 12 formed inside the first liquid storage tank 1. The first internal space 11 has a predetermined filling capacity, configured to accommodate the atomization medium 10. As an example, the predetermined filling capacity may be 2 ml. It may be understood that, the predetermined filling capacity may alternatively be higher than or lower than 2 ml. An atomization core 3 is arranged in the atomization cavity 12 and configured to heat the atomization medium 10. The atomization core 3 may be a ceramic atomization core or another type of atomization core. During inhalation, a small amount of atomization media 10 in the first internal space 11 may overcome flow resistance and flow into the atomization core 3, and the atomization core 3 can heat the atomization medium 10, to generate aerosols for inhalation.

In an example, as shown in FIG. 1, the first liquid storage tank 1 includes a first end 111 and a second end 112 that are opposite to each other. The first end 111 is adjacent to an air inlet end of an inhalation airflow path of the atomizer 100, and the second end 112 is adjacent to an inhalation end of the atomizer 100. When the atomizer 100 is arranged along a vertical direction shown in FIG. 1, the first end 111 may also be referred to as a bottom end of the first liquid storage tank 1, and the second end 112 may also be referred to as a top end of the first liquid storage tank 1. In some cases, when the atomizer 100 is arranged along a direction opposite to the direction shown in FIG. 1, that is, inverted relative to the vertical direction shown in FIG. 1, the first end 111 may be the top end of the first liquid storage tank 1, and the second end 112 may be the bottom end of the first liquid storage tank 1. It may be understood that, when the atomizer 100 is arranged along a horizontal direction or an oblique direction, the first end 111 and the second end 112 face other directions correspondingly.

In an example, as shown in FIG. 1, the atomization cavity 12 is provided adjacent to the first end 111 of the first liquid storage tank 1. Through such arrangement, each time when inhalation is performed, the small amount of atomization media 10 in the first liquid storage tank 1 may overcome the flow resistance and uniformly flow to the atomization core 3 along a perimeter of the atomization core 3, so as to be atomized. It may be understood that, in other examples, the atomization cavity 12 may alternatively be provided centrally relative to the first liquid storage tank 1 or provided at another position inside the first liquid storage tank 1.

In an example, as shown in FIG. 1, the first liquid storage tank 1 is further provided with an airflow channel 13 in communication with the atomization cavity 12. The airflow channel 13 extends from the atomization cavity 12 to the second end 112 of the first liquid storage tank 1. During inhalation, air may enter the atomization cavity 12 through the air inlet 6, and further flow through the airflow channel 13 with the aerosols generated by the atomization core 3. The airflow channel 13, the atomization cavity 12, and the air inlet 6 jointly form the inhalation airflow path of the atomizer 100. The airflow channel 13 may extend along the vertical direction or another direction, may have a uniform or gradually changed radial size, or may include a single channel or a plurality of sub-channels in communication with the atomization cavity 12.

In an example, as shown in FIG. 1, the second liquid storage tank 2 is arranged on a side wall of the first liquid storage tank 1 between the first end 111 and the second end 112. In other words, the second liquid storage tank 2 is basically arranged side by side with the first liquid storage tank 1 along the vertical direction and share the same side wall. The second liquid storage tank 2 includes a third end 23 adjacent to the first end 111 of the first liquid storage tank 1 and a fourth end 24 adjacent to the second end 112 of the first liquid storage tank 1. When the atomizer 100 is arranged along the vertical direction shown in FIG. 1, the third end 23 may also be referred to as a bottom end of the second liquid storage tank 2, and the fourth end 24 may also be referred to as a top end of the second liquid storage tank 2. The third end 23 of the second liquid storage tank 2 may be basically flush with the first end 111 of the first liquid storage tank 1. The fourth end 24 of the second liquid storage tank 2 may be basically flush with the second end 112 of the first liquid storage tank 1. It may be understood that, along the vertical direction shown in FIG. 1, the third end 23 of the second liquid storage tank 2 may alternatively be higher than or lower than the first end 111 of the first liquid storage tank 1, and the fourth end 24 of the second liquid storage tank 2 may alternatively be higher than or lower than the second end 112 of the first liquid storage tank 1.

In an example, as shown in FIG. 1, the second liquid storage tank 2 includes second internal space 21 configured to accommodate the sacrificial medium 20, the second internal space 21 is in communication with the first internal space 11 through a connection channel 4, and the connection channel 4 is internally provided with a separator 42 configured to allow the air to pass through and prevent the atomization medium and the sacrificial medium from passing through. In an aspect, the connection channel 4 includes a through hole 41 formed on the side wall of the first liquid storage tank 1, and the separator 42 is arranged in the through hole 41. The separator 42 may allow air exchange between the first internal space 11 and the second internal space 21, and does not allow flowing of the atomization medium 10 into the second internal space 21 and flowing of the sacrificial medium 20 into the first internal space 11. By using the connection channel 4, air pressure in the first internal space 11 and air pressure in the second internal space 21 may be kept basically equal to each other.

In an aspect, the separator 42 includes at least one of the following: a porous polytetrafluoroethylene (PTFE) film, a porous carbon film, a porous polyvinylidene fluoride (PVDF) film, a porous expanded polytetrafluoroethylene (EPTFE) film, and a carbon fiber film. In may be understood that, the foregoing film materials are merely exemplary materials of the separator 42, and any other film material that allows the air to pass through and prevents the atomization medium 10 and the sacrificial medium 20 from passing through can be used to form the separator 42.

It may be understood that, the second liquid storage tank 2 may be arranged on a side wall of the first liquid storage tank 1 in any proper manner. For example, in an aspect, as shown in FIG. 1, the second liquid storage tank 2 may be merely arranged on a part of the side wall of the first liquid storage tank 1. In an aspect, the second liquid storage tank 2 may be arranged surrounding the whole side wall of the first liquid storage tank 1. In an aspect, the second liquid storage tank 2 may alternatively be arranged at the second end 112 of the first liquid storage tank 1.

In an aspect, the second liquid storage tank 2 may alternatively be spaced apart from the first liquid storage tank 1. In this case, to implement air communication between the first internal space 11 and the second internal space 21, the connection channel 4 may include a pipeline connecting the second liquid storage tank 2 to the first liquid storage tank 1.

In an example, as shown in FIG. 1, a first vent hole 22 configured to allow air to enter the second internal space 21 is provided on the second liquid storage tank 2. Flow resistance of the first vent hole 22 to the sacrificial medium 20 is less than flow resistance experienced by the atomization medium 10 when flowing from the first internal space 11 to the atomization core 3. Therefore, the first vent hole 22 may be configured as a liquid leakage path during inhalation and as a vent path when inhalation is stopped. Through such arrangement, during inhalation or in a case that the ambient temperature increases sharply, the sacrificial medium 20 in the second liquid storage tank 2 may be first leaked into the leaked liquid collecting tank 5 through the first vent hole 22, and the atomization medium 10 in the first liquid storage tank 1 is not leaked. When inhalation is stopped, air in the leaked liquid collecting tank 5 may enter the second internal space 21 through the first vent hole 22, to complete ventilation.

In an aspect, as shown in FIG. 1, the connection channel 4 is provided adjacent to the second end 112 of the first liquid storage tank 1 and the fourth end 24 of the second liquid storage tank 2, and the first vent hole 22 is provided at the third end 23 of the second liquid storage tank 2. Through such arrangement, when inhalation is performed, top portions of the first internal space 11 and the second internal space 21 may respectively form air space and are in communication with each other through the connection channel 4, to ensure that the air pressure in the first internal space 11 is basically equal to the air pressure in the second internal space 21.

In an example, as shown in FIG. 1, the leaked liquid collecting tank 5 includes third internal space 51, where the third internal space 51 is in communication with the second internal space 21 through the first vent hole 22 and is in communication with the atomization cavity 12 through a second vent hole 52. The leaked liquid collecting tank 5 is configured to collect the sacrificial medium 20 leaked from the second internal space 21 through the first vent hole 22. Since the flow resistance of the first vent hole 22 to the sacrificial medium 20 is less than the flow resistance experienced by the atomization medium 10 when flowing from the first internal space 11 to the atomization core 3, during inhalation or when the ambient temperature increases sharply, the sacrificial medium 20 in the second liquid storage tank 2 may be first leaked into the leaked liquid collecting tank 5 through the first vent hole 22, and the atomization medium 10 in the first liquid storage tank 1 is not leaked. When inhalation is stopped, air in the leaked liquid collecting tank 5 may enter the second internal space 21 through the first vent hole 22, to complete ventilation. Since the sacrificial medium 20 has a low viscosity, after the air enters the second internal space 21 through the first vent hole 22, bubbles can rise in the sacrificial medium 20 at a fast speed to reach the top air space, so that ventilation can be completed reliably and smoothly, thereby preventing the atomization core 3 from being charred.

In an example, as shown in FIG. 1, the leaked liquid collecting tank 5 is arranged adjacent to the first end 111 of the first liquid storage tank 1 and the third end 23 of the second liquid storage tank 2, and a bottom of the leaked liquid collecting tank 5 is provided with an air inlet 6 in communication with the atomization cavity 12. During inhalation, air may enter the atomization cavity 12 through the air inlet 6, and further flow through the airflow channel 13 with the aerosols generated by the atomization core 3. Through such arrangement, the airflow channel 13, the atomization cavity 12, and the air inlet 6 jointly form the inhalation airflow path of the atomizer 100. The second vent hole 52 is provided on a side wall of the leaked liquid collecting unit 5 adjacent to the atomization cavity 12, so that the third internal space 51 is in communication with the atomization cavity 12.

In an example, a liquid absorbing member 53 configured to absorb the leaked sacrificial medium 20 is arranged in the leaked liquid collecting tank 5. In a case that the sacrificial medium 20 in the second liquid storage tank 2 is leaked into the leaked liquid collecting tank 5 through the first vent hole 22, the liquid absorbing member 53 may reliably absorb the leaked sacrificial medium 20, thereby further improving liquid leakage preventing performance of the atomizer 100. The liquid absorbing member 53 may include liquid absorbing cotton or another type of liquid absorbing material.

Next, air flow paths of the atomizer 100 shown in FIG. 1 during inhalation and when inhalation is stopped are described with reference to FIG. 2 and FIG. 3. For ease of description, the air pressure in the top air space of the first internal space 11 and the second internal space 21 is defined as P1, and air pressure in the atomization cavity 12 is defined as P2.

FIG. 2 shows an air flow path of the atomizer shown in FIG. 1 during inhalation. As shown in FIG. 2, during inhalation, external air may enter the atomization cavity 12 through the air inlet 6 along a direction shown by an arrow 701, and a part of air in the third internal space 51 enters the atomization cavity 12 along a direction shown by an arrow 703 and further flows through the airflow channel 13 with the aerosols generated by the atomization core 3 along a direction shown by an arrow 702. In this process, the air pressure P1 may be greater than the air pressure P2. As a result, positive pressure differences P1-P2 that are basically the same act on the atomization medium 10 and the sacrificial medium 20 simultaneously. Since the flow resistance of the first vent hole 22 to the sacrificial medium 20 is less than the flow resistance experienced by the atomization medium 10 when flowing from the first internal space 11 to the atomization core 3, the sacrificial medium 20 in the second liquid storage tank 2 may be first leaked into the leaked liquid collecting tank 5 through the first vent hole 22; and for the atomization medium 10 in the first liquid storage tank 1, only a small amount of the atomization medium flows to the atomization core 3 for atomization, and the remaining of the atomization medium 10 is not leaked. The sacrificial medium 20 is leaked into the leaked liquid collecting tank 5, and the air pressure P1 is reduced consequently.

When the ambient temperature of the atomizer 100 increases sharply, the sacrificial medium in the second liquid storage tank 2 can be first leaked into the leaked liquid collecting tank 5 in a similar manner. Specifically, when the temperature increases, the air pressure P1 may increase to be greater than the air pressure P2. As a result, positive pressure differences P1-P2 that are basically the same act on the atomization medium 10 and the sacrificial medium 20 simultaneously. Since the flow resistance of the first vent hole 22 to the sacrificial medium 20 is less than the flow resistance experienced by the atomization medium 10 when flowing from the first internal space 11 to the atomization core 3, the sacrificial medium 20 in the second liquid storage tank 2 may be first leaked into the leaked liquid collecting tank 5 through the first vent hole 22, and only a small amount of the atomization medium 10 in the first liquid storage tank 1 flows to the atomization core 3 for atomization and the remaining of the atomization medium 10 is not leaked.

FIG. 3 shows an air flow path of the atomizer shown in FIG. 1 when inhalation is stopped. As shown in FIG. 3, when inhalation is stopped, the air pressure P2 is changed to be greater than the air pressure P1, and the air in the leaked liquid collecting tank 5 may enter the second internal space through the first vent hole 22 along a direction shown by an arrow 704. Since the sacrificial medium 20 has a low viscosity, after the air enters the second internal space 21 through the first vent hole 22, the air can rise in the sacrificial medium 20 at a fast speed to reach the top air space, so that ventilation can be completed stably and reliably.

FIG. 4 is a schematic structural diagram of an atomizer according to another example of the present disclosure. A structure of the atomizer 100 of Example 2 shown in FIG. 4 is similar to the structure of the atomizer 100 of Example 1 shown in FIG. 1 to FIG. 3, and a difference only lies in that arrangement positions of the second vent hole 52 are different.

As shown in FIG. 4, the second vent hole 52 is provided on a side wall of the leaked liquid collecting tank 5 adjacent to the air inlet 6. In this way, the third internal space 51 is also in communication with the atomization cavity 12. Through such arrangement, it can also be ensured that, during inhalation or when the ambient temperature increases sharply, the sacrificial medium 20 in the second liquid storage tank 2 is first leaked into the leaked liquid collecting tank 5 through the first vent hole 22, and only a small amount of the atomization medium 10 in the first liquid storage tank 1 flows to the atomization core 3 for atomization and the remaining of the atomization medium 10 is not leaked.

An example of the present disclosure further provides an electronic atomization device, including the atomizer 100 according to any one of the foregoing examples and a power supply assembly configured to supply power to the atomizer 100.

When power is supplied to the atomizer 100, an atomization core 3 in the atomizer can heat and atomize a liquid atomization medium 10 to generate aerosols for inhalation.

The technical features in the foregoing examples may be randomly combined. For concise description, not all possible combinations of the technical features in the examples are described. However, provided that combinations of the technical features do not conflict with each other, the combinations of the technical features should be considered as falling within the scope described in this specification. The foregoing examples only show several implementations of this disclosure and are described specifically and in detail, but should not be construed as a limitation to the patent scope of this disclosure. It should be noted that for a person of ordinary skill in the art, several transformations and improvements may be made without departing from the idea of this disclosure. These transformations and improvements belong to the protection scope of this disclosure. Therefore, the protection scope of the patent of this disclosure shall be subject to the appended claims.