CN212590254U

CN212590254U - Aerial fog generating device

Info

Publication number: CN212590254U
Application number: CN202021126687.0U
Authority: CN
Inventors: 蔡吉俊; 陈超; 黄柳铭
Original assignee: Shanghai Tobacco Group Co Ltd; Shanghai New Tobacco Products Research Institute Co Ltd
Current assignee: Shanghai Tobacco Group Co Ltd; Shanghai New Tobacco Products Research Institute Co Ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-02-26
Anticipated expiration: 2030-06-17

Abstract

The utility model discloses an aerial fog produces device, including stock solution chamber, atomizing chamber and buffer solution chamber, the atomizing intracavity is equipped with atomizing portion, is equipped with first through-hole between buffer solution chamber and the stock solution chamber, is equipped with the second through-hole between buffer solution chamber and the atomizing chamber, and the liquid in the buffer solution chamber can get into the atomizing intracavity through the second through-hole and be atomized, is equipped with the float part in the buffer solution chamber, and the float part can float along first direction. Adopt above-mentioned technical scheme, realize the second grade buffer memory of liquid through setting up stock solution chamber and buffer memory liquid chamber to be equipped with the floating piece that can flow the replenishment according to the liquid level in the buffer memory liquid intracavity, adjustable atomizing intracavity tobacco tar total amount makes atomizing intracavity liquid volume department dynamic balance, ensures that atomizing portion can last effectual atomizing, reduces the tobacco tar liquid cooling effect, avoids appearing the extravagant and insufficient problem of liquid atomization of electric quantity. The floating piece can regulate and control the liquid amount in the atomizing cavity, and when the liquid is insufficient, the atomizing part stops working, so that the health risk caused by dry burning is prevented.

Description

Aerial fog generating device

Technical Field

The utility model relates to an electron cigarette technical field, concretely relates to aerial fog production device.

Background

With the growing concern for health, people are aware that traditional cigarettes pose certain health risks, and therefore, a product called an "electronic cigarette" is produced. Compared with the traditional cigarette, the electronic cigarette meets the physiological requirements of users, and simultaneously avoids harmful substances such as tar, carbon monoxide and the like brought by the traditional cigarette.

The electronic cigarette uses the atomizing core to convert liquid into smoke, so that a user can obtain smoking experience. The electronic cigarette liquid filling mode comprises two types of oil storage cotton and an oil storage cavity, the waste of the oil storage cotton is more, and the production efficiency is low. The oil storage cavity form is favorable for improving the production efficiency and observing the residual liquid amount, but the atomizer can still be activated to work when the tobacco tar is used up, and particularly, the atomizing core in the heating form can cause the problem of dry burning. Simultaneously in the use the more condition of tobacco tar total amount is big, can't regulate and control the atomizing volume of tobacco tar, can make the tobacco tar absorb away the heat of part atomizing core, not only makes the tobacco tar obtain abundant and continuous atomizing, can not make full use of the energy of battery moreover, causes the waste of electric quantity.

Therefore, it is an urgent need in the art to provide an aerosol generating device capable of safely protecting the smoke flow supplement and discharge control according to the liquid level.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the atomization amount of the tobacco liquid can not be kept stable in the prior art, and the dry burning is easy to occur after the tobacco liquid is used up. In order to solve the problem, the utility model discloses an aerial fog produces device realizes the second grade buffer memory of liquid through setting up stock solution chamber and buffer memory sap cavity to set up the floating piece that can flow the replenishment to liquid according to the liquid level in the buffer memory sap cavity, can self-interacting liquid total amount of atomizing portion contact, avoid appearing the extravagant and insufficient problem of liquid atomization of electric quantity.

In order to solve the problems, the utility model discloses an aerosol generating device, which comprises a liquid storage cavity and an atomizing cavity, wherein the atomizing cavity is internally provided with an atomizing part, the aerosol generating device also comprises a buffer liquid cavity, one or more first through holes are arranged between the buffer liquid cavity and the liquid storage cavity, one or more second through holes are arranged between the buffer liquid cavity and the atomizing cavity, liquid in the buffer liquid cavity can enter the atomizing cavity through the second through holes to be atomized, a floating part is arranged in the buffer liquid cavity, the floating part can float along a first direction, and the floating part has a first position and a second position in the first direction,

when the floating piece is in the first position, first liquid level has in the buffer solution chamber, and first through-hole is by the shutoff of floating piece, and when the floating piece was in the second position, second liquid level has in the buffer solution chamber, and first through-hole is opened, and the floating piece can float in the buffer solution chamber, and wherein, first liquid level is higher than the second liquid level.

Adopt above-mentioned technical scheme, realize the second grade buffer memory of liquid through setting up stock solution chamber and buffer solution chamber to set up the floating piece that can flow the replenishment according to the liquid level to liquid in buffer solution intracavity, the liquid total amount that can be comparatively intelligent self-interacting atomizing portion contacts, make the liquid amount department dynamic balance in the atomizing intracavity, ensure that atomizing portion can last effectual atomizing, reduce liquid cooling effect, avoid appearing the extravagant and insufficient problem of liquid atomization of electric quantity.

According to the utility model discloses a another embodiment, the floating member still has the third position, and when the floating member was in the third position, the buffer solution intracavity had the third liquid level, atomizing portion stop work.

According to the utility model discloses a another embodiment, the buffer memory intracavity is equipped with the guide part, and the guide part is used for injecing that the floating piece floats along first direction.

According to another embodiment of the present invention, the guide portion is a guide rib plate provided at intervals circumferentially around the floating member.

According to another embodiment of the present invention, the atomizing part is connected to the power source through a circuit board, the circuit board is provided with a first sensing part, the floating member is provided with a second sensing part, when the floating member is at the third position, the first sensing part can sense the second sensing part, so that the power source stops supplying power to the atomizing part,

when the floating piece is located at the first position or the second position, the second sensing part is located out of the sensing distance of the first sensing part.

According to the utility model discloses a further embodiment, the circuit board includes power control panel, and first response portion locates on the power control panel.

According to another embodiment of the present invention, the first sensing portion is a magnetic sensing element, and the second sensing portion is a magnetic element.

According to another embodiment of the present invention, the atomizing part is an electric heating atomizer or a vibration atomizer.

Drawings

The invention will be described in further detail with reference to the following drawings and detailed description:

fig. 1 is a cross-sectional view of an aerosol-generating device provided by the present invention;

fig. 2 is a sectional view of the floating member of the aerosol-generating device according to the present invention;

fig. 3 is a partially exploded view of an aerosol-generating device according to the present invention;

fig. 4 is a partially exploded view of an aerosol-generating device according to the present invention.

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1-4, the utility model discloses an aerosol generating device 1, which comprises a liquid storage cavity 10 and an atomizing cavity 12, an atomizing part 120 is arranged in the atomizing cavity 12, the aerosol generating device further comprises a buffer liquid cavity 11, a first through hole 102 is arranged between the buffer liquid cavity 11 and the liquid storage cavity 10, one or more second through holes 103 are arranged between the buffer liquid cavity 11 and the atomizing cavity 12, liquid in the buffer liquid cavity 11 can enter the atomizing cavity 12 through the one or more second through holes 103 to be atomized, a floating part 14 is arranged in the buffer liquid cavity 11, the floating part 14 can float along a first direction (as shown in an X direction in fig. 1), the floating part 14 has a first position and a second position in the first direction,

when the floating member 14 is in the first position, a first liquid level exists in the buffer liquid cavity 11, the first through hole 102 is blocked by the floating member 14, and when the floating member 14 is in the second position, a second liquid level exists in the buffer liquid cavity 11, the first through hole 102 is opened, and the floating member 14 can float in the buffer liquid cavity 11, wherein the first liquid level is higher than the second liquid level.

That is to say, after the liquid is added into the liquid storage cavity 10, the liquid can enter the buffer liquid cavity 11 through the first through hole 102, in the first direction, the liquid storage cavity 10 is located above the buffer liquid cavity 11, the two are separated by the partition 101, and the first through hole 102 is arranged on the partition 101. Preferably, the first through hole 102 is disposed at the center position of the reservoir chamber 10 and the buffer chamber 11 in the first direction, and may be disposed at other positions as needed. Be equipped with second through-hole 103 on the lower part lateral wall of buffer solution chamber 11, buffer solution chamber 11 passes through second through-hole 103 and atomizing chamber 12 intercommunication, and the liquid in the buffer solution chamber 11 can be atomized in getting into atomizing chamber 12 through second through-hole 103.

In order to avoid that the liquid in the liquid storage cavity 10 largely enters the atomization cavity through the first through hole 102, the buffer liquid cavity 11 and the second through hole 103, so that the energy of the atomization part 120 is absorbed by the liquid, the atomization of the liquid is insufficient, the energy of the battery cannot be fully used, and the waste of electric quantity is caused. Referring to fig. 1 in conjunction with fig. 2, in the present embodiment, a floating member 14 is disposed in the buffer chamber 11, and the floating member 14 is capable of floating along a first direction (as shown by the direction X in fig. 1), in which the floating member 14 has a first position and a second position. Wherein, the first direction is also the floating direction of the floating piece 14, and the liquid amount of the liquid in the liquid storage cavity 10 entering the buffer liquid cavity 11 through the first through hole 102 can be regulated and controlled by setting the floating piece 14, so as to further realize the regulation and control of the liquid amount of the liquid in the buffer liquid cavity 11 entering the atomization cavity 12 through the second through hole 103, so that the liquid amount in the atomization cavity 12 is in a stable state, and the atomization part 120 can be ensured to continuously and effectively atomize.

Specifically, when the floating member 14 is at the first position, the buffer liquid chamber 11 has a first liquid level therein, and the first through hole 102 is blocked by the floating member 14. That is, the floating member 14 blocks the first through hole 102 by virtue of buoyancy provided by the liquid in the buffer liquid cavity 11, so that the liquid in the liquid storage cavity 10 cannot enter the buffer liquid cavity 11 through the first through hole 102, and the liquid in the buffer liquid cavity 11 is at the first liquid level, that is, at the highest liquid level.

Since the buffer liquid cavity 11 is communicated with the atomizing cavity through the second through hole 103, the liquid amount in the atomizing cavity 12 is at the maximum. Because the floating piece 14 is arranged, the first through hole 102 is blocked by the floating piece 14, the liquid in the liquid storage cavity 10 is prevented from entering the atomization cavity 12 through the first through hole 102, the buffer liquid cavity 11 and the second through hole 103 in a large amount, and the atomization part 120 in the atomization cavity 12 can be continuously and effectively atomized. The atomization portion 120 is in the atomization process, so that the liquid in the atomization cavity 12 is continuously reduced, the liquid in the buffer liquid cavity 11 is fed into the atomization cavity 12 through the second through hole 103, the liquid level of the liquid in the buffer liquid cavity 11 is lowered, and the floating part 14 is lowered to enter the second position.

Specifically, when the floating member 14 is in the second position, the buffer chamber 11 has a second liquid level therein, the first through hole 102 is open, and the floating member 14 can float in the buffer chamber 11. That is, the floating member 14 can still float in the buffer chamber 11, but the liquid level of the liquid in the buffer chamber 11 drops, so that the floating member 14 leaves the first through hole 102, and the first through hole 102 is opened, so that the first liquid level of the liquid in the buffer chamber 11 is higher than the second liquid level. After the first through hole 102 is opened, the liquid in the liquid storage cavity 10 can enter the buffer liquid cavity 11 through the first through hole 102 again, so that the liquid in the buffer liquid cavity 11 is supplemented, and the liquid level of the liquid rises again. When the first liquid level is reached, the floating piece 14 blocks the first through hole 102 again by virtue of buoyancy provided by liquid in the buffer liquid cavity 11, so that a large amount of liquid is prevented from entering the atomizing cavity 12.

In the process that aerial fog generating device 1 used, the liquid in buffer liquid chamber 11 is under the regulation and control of floating piece 14, and the above-mentioned change process of repetition realizes the dynamic balance of the interior liquid volume of buffer liquid chamber 11 for the liquid volume in the atomizing chamber 12 is in a stable state, ensures that atomizing portion 120 can last effectual atomizing, avoids causing the waste of electric quantity and the insufficient problem of liquid atomization to appear.

According to another embodiment of the present invention, referring to fig. 1, the floating member 14 further has a third position, and when the floating member 14 is located at the third position, the buffer liquid chamber 11 has a third liquid level therein, and the atomizing part 120 stops working.

That is, under the condition that liquid is not enough in the liquid storage cavity 10, when unable for atomizing portion 120 provides liquid through first through-hole 102, buffer liquid cavity 11 and second through-hole 103, atomizing portion 120 atomizing liquid back for the liquid in the atomizing cavity 12 constantly reduces, and then makes the liquid level of liquid constantly descend in buffer liquid cavity 11, can't provide sufficient buoyancy for float 14, and float 14 also descends along with the liquid level decline. The atomization chamber 12 is communicated with the buffer liquid chamber 11, and when the liquid in the atomization chamber 12 is not atomized enough by the atomization part 120, the floating part 14 in the buffer liquid chamber 11 enters the third position.

That is, when the float 14 is at the third position, the buffer chamber 11 has a third liquid level, that is, the liquid in the buffer chamber 11 and the atomizing chamber 12 is not enough to be atomized by the atomizing part 120, and the amount of the liquid in the buffer chamber 11 is at a minimum. At this time, if the atomizing part 120 continues to operate, a dry burning phenomenon is caused, and therefore, when the float member 14 is in the third position, the atomizing part 120 stops operating. That is, by arranging the floating member 14, joint control is established between the liquid level of the liquid in the buffer liquid chamber 11 and the working state of the atomization portion 120, so that the atomization portion 120 can stop working under the condition of insufficient liquid, and the health risk caused by dry burning is prevented.

It should be noted that the utility model discloses do not restrict the antithetical couplet accuse form between the operating condition of the position state of floating piece and atomizing portion, as long as can ensure when floating piece is in the third position for atomizing portion stop work can.

Specifically, as shown in fig. 1 in combination with fig. 2-4, according to another embodiment of the present invention, the atomizing unit 120 is connected to the power supply 15 through the circuit board 16, the circuit board 16 is provided with a first sensing unit 161, the floating member 14 is provided with a second sensing unit 143, when the floating member 14 is located at the third position, the first sensing unit 161 can sense the second sensing unit 143, so that the power supply 15 stops supplying power to the atomizing unit 120, and when the floating member 14 is located at the first position or the second position, the second sensing unit 143 is located outside the sensing distance of the first sensing unit 161. Through setting up first response portion 161 and second response portion 143, can make the accurate reliable position of sensing the floating piece 14 of circuit board 16, when second response portion 143 gets into within the sensing distance of first response portion 161, first response portion 161 can give the signal for circuit board 16 control power supply 15 stops to the power supply of atomizing portion 120, avoids appearing atomizing portion 120 dry combustion method under the not enough condition of liquid.

According to another embodiment of the present invention, the circuit board 16 includes a power control board 160, and the first sensing portion 161 is disposed on the power control board 160. Along aerial fog device 1's direction of height (as shown in the Y direction in fig. 1), the direction of floating piece 14 is unanimous with aerial fog device 1's direction of height, power control panel 160 can be reliable and stable control power 15's break-make, set up first response portion 161 on power control panel 160, power control panel 160 can be located can realize with second response portion 143 any position of internal energy mutual induction in the certain distance, preferentially, be located power control panel 160 below floating piece 14, be convenient for first response portion 161 monitors the position of second response portion 143, the control to floating piece 14 position in the direction of floating has been improved, the not enough condition of monitoring liquid that can be timely accurate, can effectually avoid appearing the problem of dry combustion method.

In this embodiment, the first sensing portion 161 is a magnetic sensing element, and the second sensing portion 143 is a magnetic element. Specifically, the first sensing portion 161 may be a reed pipe, a magnetic sensor, or the like, and the second sensing portion 143 may be a magnet, such as a rubber magnetic ring, a metal magnetic ring, or a magnetic block, and the polarity is not required to be considered when mounting. In other embodiments, the first sensing portion and the second sensing portion may have other structures or types, which is not limited by the present invention as long as they can mutually sense each other within a certain distance.

In the present embodiment, the power supply 15 is a dry battery, and the atomizing unit 120 is an electrically heated atomizer or a vibration atomizer. Specifically, the power supply 15 is a common dry battery or a rechargeable battery, such as a carbon battery, an alkaline battery, a nickel-hydrogen rechargeable battery, a lithium ion battery, etc., a battery compartment 150 is provided in the housing 17 of the aerosol device 1, the power supply 15 is installed in the battery compartment 150 along the height direction of the aerosol device 1, and a compartment cover 151 is provided at the lower end of the battery compartment 150 for sealing the battery compartment 150. When the power supply is used, the power supply 15 does not need high-rate discharge performance, the service life of the power supply 15 can be prolonged, the situation of overheating explosion cannot occur, and the safety is good. The atomizer 120 is an electrically heated atomizer or a vibrating atomizer, and is connected to the circuit board 16 via an electrode 121.

Further, in order to avoid the floating piece to rock in the buffer solution cavity, the first through hole of unable accurate shutoff, it is shown with reference to fig. 1, according to the utility model discloses a another embodiment, be equipped with guide 110 in the buffer solution cavity 11, guide 110 is used for injecing that floating piece 14 floats along first direction. Specifically, the guide portions 110 are guide rib plates that are circumferentially spaced around the float member 14. The guide portion 110 is provided to enable the floating member 14 to float in the direction guided by the guide portion 110, thereby ensuring that the floating member 14 can accurately and reliably block the first through hole 102 in the buffer liquid chamber 11.

It should be noted that the present invention does not limit the specific structure of the floating member, as long as it is ensured that the floating member can float along with the liquid in the buffer liquid cavity.

Specifically, referring to fig. 2 in combination with fig. 1, in an embodiment, the floating member 14 includes a floating housing 140, a filler 141 is disposed in the floating housing 140, and the filler 141 is a low-density filler, which enables the average density of the floating member 14 to be lower than that of the liquid, so that the floating member 14 floats on the liquid level. Specifically, the filler 141 may be a foamed material, such as foam, EVA, low-foamed PE, PLA, wood, etc., or a hollow cavity processed by blow molding, slush molding, or rolling. Alternatively, the floatation member 14 may be a structure in which the floatation housing 140 directly encloses the gas cavity. The floating shell 140 is provided with a top plug 142 for blocking the first through hole 102, and the top plug 142 is made of a relatively soft material, such as: TPU, TPE, silica gel, PE, PP, PLA and the like, and can also be a blended material of a plurality of materials. The floating housing 140 may be manufactured using conventional plastics, such as PP, ABS, PLA, etc.

Preferably, in this embodiment, the volume of the buffer liquid chamber 11 is not more than 50% of the volume of the liquid storage chamber 10. That is, the liquid storage chamber 10 is the largest chamber, and the volume of the buffer liquid chamber 11 is smaller than that of the liquid storage chamber 10, and the volume of the buffer liquid chamber is not more than 50% of that of the liquid storage chamber 10. Can effectually avoid the liquid in the stock solution chamber 10 to flow into in the atomizing chamber 12 through a large amount of first through-hole 102, buffer solution chamber 11 and second through-hole 103 for the energy of atomizing portion 120 is siphoned away to liquid, causes the liquid to atomize inadequately, and can not make full use of the energy of battery, causes the waste of electric quantity. In other embodiments, the volume ratio between buffer solution chamber and the stock solution chamber still can be other values, as long as can effectual realization liquid buffer memory can, the utility model discloses do not restrict this.

In this embodiment, the liquid storage chamber 10 is provided with an upper cover 100, and the upper cover 100 can be opened to add liquid and can be completely removed. After 100 take off at upper cover, open stock solution chamber 10 can be comparatively convenient add liquid, also conveniently wash stock solution chamber 10 simultaneously, when using the liquid of different tastes, can wash by oneself by the user, stock solution chamber 10 has sealed isolation with the circuit part, upper cover 100 can use and have certain elasticity or have the material manufacturing of better sealing performance, if: silica gel, PE, TPE, TPU and other materials.

Further, referring to fig. 1-4, in the present embodiment, the aerosol generating device 1 is further provided with a suction nozzle 13, an aerosol channel 130 is provided in the suction nozzle 13, and in the use state, the liquid after being atomized can be sucked by the user through the aerosol channel 130. The mouthpiece 13 is provided above the atomizing chamber 12 in the height direction of the aerosol device 1. After the liquid enters the atomizing chamber 12 (as shown by the solid horizontal arrow in fig. 1), the liquid can be atomized by the atomizing part 120 to form an aerosol, and the aerosol enters the aerosol passage 130 of the mouthpiece 13 (as shown by the dashed upward arrow in fig. 1). An air inlet hole 131 is formed at the lower portion of the suction nozzle 13, and when a user sucks, external air enters the aerosol channel 130 through the air inlet hole 131 (as shown by a downward dotted arrow in fig. 1), and drives the aerosol to be sucked by the user.

Referring to fig. 1-4, in this embodiment, the reservoir 10 is juxtaposed with the mouthpiece 13. Specifically, the upper portion of the housing 17 is provided with a mounting hole 170 for mounting the suction nozzle 13, the mounting hole 170 is arranged in parallel with the liquid storage cavity 10 in the height direction of the aerosol device 1, and the suction nozzle 13 is connected with the mounting hole 170 in a sealing manner through threads, so that the suction nozzle is convenient to detach, replace and clean.

It should be noted that the present invention does not limit the specific types and applications of the aerosol generating device and the liquid, and may be reasonably selected according to actual needs, preferably, the aerosol generating device is an electronic cigarette, and the liquid may be tobacco tar or tobacco liquid, where the tobacco tar or tobacco liquid refers to a liquid containing one or more of glycerin and propylene glycol, and the tobacco tar or tobacco liquid may further contain one or more of nicotine or nicotine salt, or may not contain one or more of nicotine or nicotine salt.

To sum up, the utility model provides a pair of aerial fog produces device realizes the second grade buffer memory of liquid through setting up stock solution chamber and buffer memory sap cavity to set up the floating piece that can flow the replenishment to liquid according to the liquid level in the buffer memory sap cavity, the liquid total amount of self-interacting atomizing portion contact that can be comparatively intelligent, make the liquid amount department dynamic balance in the atomizing intracavity, ensure that the atomizing portion can last effectually atomize, reduce liquid cooling effect, avoid appearing the extravagant and insufficient problem of liquid atomization of electric quantity.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. An aerial fog generating device comprises a liquid storage cavity and an atomization cavity, wherein an atomization part is arranged in the atomization cavity, and the aerial fog generating device is characterized by further comprising a buffer liquid cavity, one or more first through holes are arranged between the buffer liquid cavity and the liquid storage cavity, one or more second through holes are arranged between the buffer liquid cavity and the atomization cavity, liquid in the buffer liquid cavity can enter the atomization cavity through the second through holes to be atomized, a floating part is arranged in the buffer liquid cavity, the floating part can float along a first direction, and the floating part has a first position and a second position in the first direction,

when the floating piece is located at a first position, a first liquid level is arranged in the buffer liquid cavity, the first through hole is blocked by the floating piece, when the floating piece is located at a second position, a second liquid level is arranged in the buffer liquid cavity, the first through hole is opened, the floating piece can float in the buffer liquid cavity, and the first liquid level is higher than the second liquid level.

2. The aerosol generating device of claim 1, wherein the float member further has a third position, and wherein when the float member is in the third position, the buffer chamber has a third liquid level therein, and the aerosolizing portion is deactivated.

3. The aerosol generating device of claim 1 or 2, wherein a guide is provided within the buffer chamber for limiting the float member to float in the first direction.

4. The aerosol generating device of claim 3, wherein the guides are guide ribs spaced circumferentially around the float.

5. The aerosol generating device according to claim 1 or 2, wherein the atomizing part is connected to a power source through a circuit board, the circuit board is provided with a first sensing part, the floating member is provided with a second sensing part, and when the floating member is at the third position, the first sensing part can sense the second sensing part, so that the power source stops supplying power to the atomizing part,

6. The aerosol generating device of claim 5, wherein the circuit board comprises a power control board, and the first sensing portion is disposed on the power control board.

7. The aerosol-generating device of claim 5, wherein the first inductive portion is a magnetic inductive element and the second inductive portion is a magnetic element.

8. The aerosol-generating device of claim 1, wherein the aerosolizing portion is an electrically heated atomizer or a vibrating atomizer.