Atomizer and aerosol generating device

Abstract

The utility model relates to the technical field of atomization, in particular to an atomizer and an aerosol generating device.The atomizer comprises a shell assembly, a blocking piece and an atomizing core assembly, a liquid storage space is divided into a liquid storage cavity and a buffering cavity through the blocking piece, the liquid storage cavity is communicated with a liquid injection opening, and the atomizing core assembly is communicated with the buffering cavity; when an aerosol-forming substrate is supplemented, the aerosol-forming substrate sequentially passes through the liquid injection opening and the liquid storage cavity to flow into the buffer cavity and then flows from the buffer cavity to the atomizing core assembly, so that the speed of the aerosol-forming substrate flowing into the buffer cavity can be reduced, and negative pressure formed in the buffer cavity is increased slowly and is small; according to the technical scheme, the problem that the aerosol-forming substrate flows to the atomizing core assembly too quickly due to negative pressure when the aerosol-forming substrate is supplemented can be avoided, so that the aerosol-forming substrate is prevented from permeating into the atomizing core assembly, the problems that the aerosol-forming substrate affects the use taste and damages other parts are solved, and the user experience feeling is improved.

Description

Technical Field

[0001] The present application relates to the field of atomization technology, and more specifically to an atomizer and an aerosol generating device. Background Art

[0002] The existing atomizer is provided with a liquid storage device, and a liquid injection port is provided on the liquid storage device and sealed with a sealing cover. When the aerosol-forming matrix needs to be supplemented, the sealing cover is opened to expose the liquid injection port, and the aerosol-forming matrix is ​​supplemented into the liquid storage device from the liquid injection port. During the process of supplementing the aerosol-forming matrix, the gas in the liquid storage device will flow to other parts of the entire atomizer, thereby generating negative pressure inside the liquid storage device, and the negative pressure will accelerate the aerosol matrix to flow out of the liquid storage device, and flow too much and too fast to the atomization core connected thereto, thereby causing the aerosol-forming matrix to seep out of the atomization core, which, on the one hand, will contaminate the atomization core and other components connected to the atomization core, causing corrosion and damage to other components; on the other hand, when the user uses it, the excessive aerosol-forming matrix at the atomization core will affect the user's taste, resulting in a very poor user experience. Utility Model Content

[0003] The present application provides a nebulizer and an aerosol generating device, which can effectively solve the technical problem of excessive and too fast flow to the atomizing core during the aerosol formation matrix replenishment process, thereby causing leakage.

[0004] The present application provides an atomizer, comprising:

[0005] A shell component, wherein a liquid storage space is provided in the shell component, the liquid storage space is used to store an aerosol-forming matrix, and the shell component is provided with a liquid injection port, the liquid injection port is used to inject the aerosol-forming matrix into the liquid storage space;

[0006] a barrier, the barrier being arranged in the liquid storage space to separate the liquid storage space into a liquid storage cavity and a buffer cavity; the liquid storage cavity is communicated with the liquid injection port, and the aerosol-forming matrix can be injected into the liquid storage cavity through the liquid injection port; an overflow portion is provided on the barrier so that the aerosol-forming matrix can flow from the liquid storage cavity into the buffer cavity through the overflow portion;

[0007] and an atomizer core assembly, wherein the atomizer core assembly is disposed in the buffer cavity and communicated with the buffer cavity, and the atomizer core assembly is used for heating and atomizing an aerosol-forming matrix flowing into the buffer cavity.

[0008] In one embodiment, the shell assembly has a first end and a second end, and the first end and the second end are arranged relative to each other along the extension direction of the shell assembly; the liquid storage chamber and the barrier member both have an extension length extending from the first end to the second end, and the extension length of the barrier member is smaller than the extension length of the liquid storage chamber; the overflow portion is arranged at the end of the barrier member away from the first end.

[0009] In one embodiment, the liquid storage cavity is annularly sleeved on the outside of the buffer cavity.

[0010] In one embodiment, the shell assembly is further provided with an injection channel, and both ends of the injection channel are respectively connected to the liquid storage cavity and the injection port, so that the aerosol-forming matrix passes through the injection port and the injection channel in sequence and flows into the liquid storage cavity.

[0011] In one embodiment, the atomizer further includes a blocking member, which is disposed in the injection channel; the blocking member has a first position and a second position, wherein in the first position, the blocking member blocks an end of the injection channel away from the injection port, and in the second position, the blocking member opens an end of the injection channel away from the injection port.

[0012] In one embodiment, the shell assembly has a first end and a second end, and the first end and the second end are arranged relative to each other along the extension direction of the shell assembly; the liquid injection port is arranged at the second end, and the liquid injection port extends in a direction from the second end to the first end to form the liquid injection channel; the end of the liquid injection channel away from the second end gradually increases in size along the direction from the second end to the first end.

[0013] In one embodiment, the atomizer further includes a sealing member, wherein the sealing member is disposed in the shell assembly, and the liquid storage space is formed between the sealing member and the shell assembly; a liquid outlet is provided on the sealing member, and the liquid outlet is connected to the liquid injection port, so that the aerosol-forming matrix flows into the liquid storage cavity through the liquid injection port and the liquid outlet in sequence.

[0014] In one embodiment, an atomization chamber is provided in the sealing member, the atomization core assembly is arranged in the atomization chamber, a liquid inlet hole is provided on a side of the sealing member close to the atomization core assembly, and the atomization core assembly is connected to the buffer chamber through the liquid inlet hole.

[0015] In one embodiment, the shell assembly includes an outer shell, a base and a suction nozzle, the outer shell is connected to the base, the suction nozzle is arranged on a side of the outer shell away from the base, the barrier is arranged in the outer shell and extends in a direction from the outer shell to the base, and one end of the barrier away from the suction nozzle is aligned with the central axis of the liquid inlet hole.

[0016] The present application provides an aerosol generating device, comprising a power supply assembly and the atomizer as described above.

[0017] According to the atomizer in the above embodiment, it includes a shell assembly, a barrier and an atomizer core assembly. Since the barrier can separate the liquid storage space into a liquid storage chamber and a buffer chamber, and the liquid storage chamber is connected with the liquid injection port, the atomizer core assembly is arranged in the buffer chamber and is connected with the buffer chamber. When the aerosol-forming matrix is ​​replenished, it first flows into the liquid storage chamber through the liquid injection port. When the liquid level in the liquid storage chamber reaches the overflow portion of the barrier, the aerosol-forming matrix flows from the overflow portion into the buffer chamber, and then flows from the buffer chamber to the atomizer core assembly, thereby slowing down the speed at which the aerosol-forming matrix flows into the buffer chamber, so that the negative pressure formed in the buffer chamber increases slowly and is small, and the problem that the negative pressure causes the aerosol-forming matrix to flow to the atomizer core assembly too quickly when the aerosol-forming matrix is ​​replenished can be avoided, thereby avoiding the aerosol-forming matrix from penetrating into the interior of the atomizer core assembly, solving the problem that the aerosol-forming matrix affects the taste and damages other components, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of an atomizer in an embodiment;

[0019] Figure 2 A structural cross-sectional view of an atomizer in an embodiment when placed upright;

[0020] Figure 3 A structural cross-sectional view of an atomizer when it is inverted in one embodiment;

[0021] Figure 4 An exploded view of the structure of an atomizer in one embodiment;

[0022] Figure 5 A schematic diagram of the structure of an outer shell at one angle in one embodiment;

[0023] Figure 6 A schematic diagram of the structure of the outer shell in another angle in one embodiment;

[0024] Figure 7 Schematic diagram of the structure of the second sealing portion in an embodiment.

[0025] Among them: 100, shell assembly; 110, liquid storage space; 111, liquid storage chamber; 112, buffer chamber; 120, liquid injection port; 130, first end; 140, second end; 150, liquid injection channel; 160, outer shell; 170, suction nozzle; 180, base; 200, barrier; 210, overflow; 300, atomization core assembly; 310, atomization core; 320, liquid guide; 400, blocking member; 500, sealing member; 510, first sealing part; 520, second sealing part; 521, liquid outlet; 530, atomization chamber; 531, liquid inlet; 600, electrode. DETAILED DESCRIPTION

[0026] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0027] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0028] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0029] The atomizing device includes a liquid storage device and an atomizing core assembly. The liquid storage device generally stores a certain amount of aerosol-forming matrix, which is heated and atomized by the atomizing core assembly to form an aerosol for the user to use. Since the capacity of the aerosol-forming matrix is ​​limited, the atomizing device is scrapped after use, that is, the atomizing device is a disposable item, and the user needs to buy a new complete atomizing device, which undoubtedly increases the user's use cost. The prior art provides a liquid injection port on the atomizing device, through which the aerosol-forming matrix is ​​replenished, so as to achieve the reuse of the atomizing device and reduce the user's use cost. However, when the aerosol-forming matrix is ​​added to the liquid storage device, the negative pressure in the liquid storage device increases as the amount of aerosol-forming matrix increases. The existence of negative pressure causes more aerosol-forming matrix to penetrate into the atomizer core assembly. The aerosol-forming matrix that penetrates into the atomizer core assembly needs to be cleaned in time. However, based on the nature of the aerosol-forming matrix, it has a certain viscosity, which makes it more troublesome to clean up, and even difficult to clean up. The residual aerosol-forming matrix will flow into other components (such as power supply components), corroding or damaging other components. At the same time, the residual aerosol-forming matrix will also affect the user's taste during subsequent use, giving the user a bad experience. In order to solve this technical problem, the present application provides the following technical solutions.

[0030] refer to Figures 1 to 7 The present application provides an atomizer, including a shell assembly 100, a barrier 200 and an atomizing core assembly 300. The shell assembly 100 is provided with a liquid storage space 110, and the liquid storage space 110 is used to store an aerosol-forming matrix. The shell assembly 100 is provided with a liquid injection port 120, and the liquid injection port 120 is used to inject the aerosol-forming matrix into the liquid storage space 110; the barrier 200 is arranged in the liquid storage space 110, and the liquid storage space 110 is divided into a liquid storage cavity 111 and a buffer cavity 112. 12; the liquid storage chamber 111 is communicated with the liquid injection port 120, and the aerosol-forming matrix can be injected into the liquid storage chamber 111 through the liquid injection port 120; an overflow portion 210 is provided on the barrier 200, so that the aerosol-forming matrix can flow from the liquid storage chamber 111 into the buffer chamber 112 through the overflow portion 210; the atomizer core assembly 300 is disposed in the buffer chamber 112 and communicated with the buffer chamber 112, and the atomizer core assembly 300 is used to heat and atomize the aerosol-forming matrix flowing into the buffer chamber 112.

[0031] Since the barrier 200 can separate the liquid storage space 110 into the liquid storage chamber 111 and the buffer chamber 112, and the liquid storage chamber 111 is connected to the liquid injection port 120, the atomizer core assembly 300 is disposed in the buffer chamber 112 and is connected to the buffer chamber 112. When the aerosol-forming matrix is ​​replenished, it first flows into the liquid storage chamber 111 through the liquid injection port 120. When the liquid level in the liquid storage chamber 111 reaches the overflow portion 210, the aerosol-forming matrix flows from the overflow portion 210 into the buffer chamber 112, and then flows from the buffer chamber 112 to the aerosol-forming matrix. 12 flows to the atomizer core assembly 300, thereby slowing down the speed at which the aerosol-forming matrix flows into the buffer chamber 112, so that the negative pressure formed in the buffer chamber 112 increases slowly and is small, which can avoid the problem that the negative pressure causes the aerosol-forming matrix to flow to the atomizer core assembly 300 too quickly when the aerosol-forming matrix is ​​replenished, thereby avoiding the aerosol-forming matrix from penetrating into the atomizer core assembly 300, solving the problem that the aerosol-forming matrix affects the taste and damages other components, and improving the user experience.

[0032] The atomizer core assembly 300 includes an atomizer core 310 and a liquid guide 320. The liquid guide 320 is arranged outside the atomizer core 310 and between the buffer cavity 112 and the atomizer core 310. The aerosol-forming substrate flows from the buffer cavity 112 through the liquid guide 320 to the atomizer core 310. The liquid guide 320 also stores part of the aerosol-forming substrate during the liquid guide process and can slow down the flow rate of the aerosol-forming substrate. When the negative pressure is too large, the flow rate of the aerosol-forming substrate is too fast, which will cause part of the aerosol-forming substrate to quickly enter the atomizer core 310. When the negative pressure is small, due to the effect of the liquid guide 320, it is difficult for the aerosol-forming substrate to enter the atomizer core 310, thereby protecting the atomizer core 310 and improving the user's taste.

[0033] In one embodiment, the liquid guiding member 320 is a liquid guiding cotton, which has a certain adsorption effect on the aerosol forming matrix, can slow down its flow rate, and cooperate with the buffer cavity 112 and the liquid storage cavity 111, so as to reduce the leakage of the aerosol forming matrix.

[0034] The shell assembly 100 has a first end 130 and a second end 140, and the first end 130 and the second end 140 are arranged relatively to each other along the extension direction of the shell assembly 100; the liquid storage chamber 111 and the barrier 200 both have an extension length extending from the first end 130 to the second end 140, and the extension length of the barrier 200 is smaller than the extension length of the liquid storage chamber 111; the overflow portion 210 is arranged at the end of the barrier 200 away from the first end 130. Since the extension length of the barrier 200 is smaller than the extension length of the liquid storage chamber 111, when the liquid level of the aerosol-forming matrix in the liquid storage chamber 111 reaches the end of the barrier 200 away from the first end 130, the aerosol-forming matrix can flow into the buffer chamber 112 from the overflow portion 210 at the end away from the first end 130. Furthermore, since the liquid slowly flows through the barrier 200 close to the side of the buffer chamber 112, the negative pressure in the buffer chamber 112 is slowed down and reduced, thereby slowing down the speed at which the aerosol-forming matrix flows to the atomizing core assembly 300, and also delaying the contact time between the two, thereby avoiding leakage of the aerosol-forming matrix.

[0035] Of course, in other embodiments, an overflow port may also be provided on the barrier 200 , so that when the liquid level of the aerosol-forming substrate in the liquid storage chamber 111 reaches the position of the overflow port, the aerosol-forming substrate can flow from the overflow port into the buffer chamber 112 .

[0036] In one embodiment, the liquid storage chamber 111 is annularly arranged on the outside of the buffer chamber 112, and the buffer chamber 112 and the liquid storage chamber 111 have the same extension length direction, and have a central axis arranged in a straight line from the first end 130 to the second end 140, so that the space in the shell assembly 100 can be fully utilized, and when the aerosol matrix is ​​inverted to be supplemented, the aerosol-forming matrix can flow from the liquid storage chamber 111 into the buffer chamber 112 only when the liquid level exceeds the overflow portion 210 on the barrier 200.

[0037] In order to better guide the aerosol-forming matrix into the liquid storage chamber 111, an injection channel 150 is also provided on the shell assembly 100, and the two ends of the injection channel 150 are respectively connected to the liquid storage chamber 111 and the injection port 120, so that the aerosol-forming matrix passes through the injection port 120 and the injection channel 150 in sequence and flows into the liquid storage chamber 111.

[0038] In order to prevent leakage of the aerosol-forming matrix in the nebulizer, the nebulizer also includes a blocking piece 400, which is arranged in the injection channel 150; the blocking piece 400 has a first position and a second position. In the first position, the blocking piece 400 blocks the end of the injection channel 150 away from the injection port 120, and in the second position, the blocking piece 400 opens the end of the injection channel 150 away from the injection port 120.

[0039] In one embodiment, the injection port 120 is disposed at the second end 140, and the injection port 120 extends in a direction from the second end 140 to the first end 130 to form an injection channel 150; the end of the injection channel 150 away from the second end 140 gradually increases in size in a direction from the second end 140 to the first end 130.

[0040] The size of the injection channel 150 is reduced to form a funnel shape with one end larger and the other end smaller. When the atomizer is placed in the forward direction (the first end 130 is facing upward and the second end 140 is facing downward), the blocking member 400 can be moved to the first position to block the injection channel 150, thereby preventing the aerosol-forming substrate from leaking from the injection port 120 when the aerosol-forming substrate is placed in the forward direction. When the aerosol-forming substrate is placed in an inverted manner (the second end 140 is facing upward and the first end 130 is facing downward) to replenish the aerosol substrate, due to the effect of gravity, the blocking member 400 can be moved from the first position to the second position and the injection channel 150 is opened, so that the aerosol-forming substrate flows into the liquid storage chamber 111, completing the replenishment of the aerosol-forming substrate.

[0041] The injection channel 150 extends from the first end 130 to the second end 140, so that the flow path of the aerosol-forming matrix is ​​a straight line, which can prevent the aerosol-forming matrix from remaining in the injection channel 150 or the injection port 120, so that the aerosol-forming matrix can flow smoothly into the liquid storage chamber 111.

[0042] Of course, in other embodiments, the extension direction of the injection channel 150 may also form an angle with the extension direction of the shell assembly 100 , such as the two are arranged vertically, and the injection port 120 is arranged at a position between the first end 130 and the second end 140 of the shell assembly 100 .

[0043] refer to Figures 2 to 4 The atomizer further includes a sealing member 500, which is disposed in the housing assembly 100. A liquid storage space 110 is formed between the sealing member 500 and the housing assembly 100. The sealing member 500 can form a relatively closed liquid storage space 110, thereby preventing leakage of the aerosol-forming substrate. The sealing member 500 is provided with a liquid outlet 521, which is communicated with the liquid injection port 120, so that the aerosol-forming substrate flows into the liquid storage cavity 111 through the liquid injection port 120 and the liquid outlet 521 in sequence.

[0044] In one embodiment, the blocking member 400 is a spherical structure, which can be a steel ball or other elastic spherical structures.

[0045] In order to adapt to the spherical structure and enable the aerosol-forming matrix to flow evenly and at a low speed into the liquid storage chamber 111, a hemispherical structure is provided on the side of the sealing member 500 opposite to the injection channel 150, and the liquid outlet 521 is evenly arranged on the hemispherical structure. The diameter of the hemispherical structure is larger than the diameter of the sealing member 400, so that the sealing member 400 can move within the hemispherical structure without affecting the aerosol-forming matrix from flowing into the liquid storage chamber 111.

[0046] Furthermore, an atomizing chamber 530 is provided in the sealing member 500, and the atomizing core assembly 300 is disposed in the atomizing chamber 530. A liquid inlet hole 531 is provided on the side of the sealing member 500 close to the atomizing core assembly 300, and the atomizing core assembly 300 is connected with the buffer chamber 112 through the liquid inlet hole 531. The sealing member 500 can separate the atomizing chamber 530 and the buffer chamber 112, and the two are connected through the liquid inlet hole 531, so that the aerosol-forming substrate flows from the buffer chamber 112 into the atomizing core assembly 300 through the liquid inlet hole 531.

[0047] refer to Figure 4 and Figure 7 The sealing member 500 includes a first sealing portion 510 and a second sealing portion 520, the first sealing portion 510 and the second sealing portion 520 are in contact with each other, and the first sealing portion 510, the barrier 200 and the housing assembly 100 enclose a buffer chamber 112, the second sealing portion 520, the barrier 200 and the housing assembly 100 enclose a liquid storage chamber 111, the second sealing portion 520 is also connected to the injection channel 150, and the liquid outlet 521 is arranged on the second sealing portion 520. The first sealing portion 510 and the second sealing portion 520 are arranged as two independent components, which facilitates the assembly of the atomizer core 310.

[0048] In one embodiment, the first sealing portion 510 and the second sealing portion 520 are both made of silicone.

[0049] refer to Figure 4 The shell assembly 100 includes an outer shell 160, a base 180 and a nozzle piece 170. The outer shell 160 and the base 180 are connected. The nozzle piece 170 is arranged on a side of the outer shell 160 away from the base 180. The barrier 200 is arranged in the outer shell 160 and extends in a direction from the outer shell 160 to the base 180. One end of the barrier 200 away from the nozzle piece 170 is aligned with the central axis of the liquid inlet hole 531, so as to prevent the aerosol-forming matrix from contacting the atomization core assembly 300 too early when flowing into the buffer chamber 112, thereby reducing the possibility of leakage of the aerosol-forming matrix.

[0050] Specifically, the mouthpiece 170 is arranged at the first end 130, the base 180 is arranged at the second end 140, and the outer shell 160, the mouthpiece 170 and the base 180 enclose an installation space, and the installation space is finally divided into a plurality of cavities including a buffer cavity 112 and a liquid storage cavity 111 by the above-mentioned barrier 200, the first sealing portion 510 and the second sealing portion 520. The mouthpiece 170 is connected to the atomization cavity 530, so that the aerosol formed in the atomization cavity 530 can flow into the mouthpiece 170, and the base 180 is provided with an electrode 600, which is electrically connected to the atomization core assembly 300. The injection channel 150 is extended and arranged on the base 180 and the second sealing portion 520, and is connected to the liquid outlet 521 on the second sealing portion 520.

[0051] In one embodiment, the nozzle 170 and the outer shell 160 are an integrally formed structure, which is simple in structure, convenient for assembly, and can also improve sealing. The barrier 200 and the outer shell 160 are also an integrally formed structure, which is convenient for integrated casting or casting, and the process is simple and convenient, which can reduce production costs.

[0052] The usage process of this application is: Figure 2 , is a schematic diagram of the atomizer when it is placed upright. At this time, the blocking member 400 blocks the injection channel 150, which can prevent the aerosol-forming matrix from leaking out of the liquid storage space 110. Figure 3 , is a schematic diagram of the atomizer when it is inverted. The blocking member 400 opens the injection channel 150 under the action of gravity. The user injects the aerosol-forming matrix into the injection port 120. The aerosol-forming matrix flows into the liquid storage chamber 111 along the direction indicated by the arrow, first through the injection channel 150 and the liquid outlet 521. When the liquid level in the liquid storage chamber 111 reaches the overflow port, the aerosol-forming matrix flows from the liquid storage chamber 111 into the buffer chamber 112. As the liquid level gradually rises until the liquid inlet hole 531, the aerosol-forming matrix will contact the atomizer core assembly 300. At this time, since the aerosol-forming matrix in the liquid storage space 110 is basically saturated, the negative pressure will not be increased, and the flow rate of the aerosol-forming matrix is ​​slow, thereby avoiding leakage from the atomizer core assembly 300 during the process of replenishing the aerosol-forming matrix. After the replenishment is completed, the atomizer is placed forward again. At this time, the aerosol-forming matrix slowly flows to the atomizer core assembly 300 for subsequent use.

[0053] The present application also provides an aerosol generating device, including a power supply component and the above-mentioned atomizer, wherein the power supply component is electrically connected to the electrode 600 and is used to provide the atomizer with the power required for operation.

[0054] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. An atomizer, characterized in that: include: A shell component, wherein a liquid storage space is provided in the shell component, the liquid storage space is used to store an aerosol-forming matrix, and the shell component is provided with a liquid injection port, the liquid injection port is used to inject the aerosol-forming matrix into the liquid storage space; a barrier, the barrier being arranged in the liquid storage space to separate the liquid storage space into a liquid storage cavity and a buffer cavity; the liquid storage cavity is communicated with the liquid injection port, and the aerosol-forming matrix can be injected into the liquid storage cavity through the liquid injection port; an overflow portion is provided on the barrier so that the aerosol-forming matrix can flow from the liquid storage cavity into the buffer cavity through the overflow portion; and an atomizer core assembly, wherein the atomizer core assembly is disposed in the buffer cavity and communicated with the buffer cavity, and the atomizer core assembly is used for heating and atomizing an aerosol-forming matrix flowing into the buffer cavity.

2. The atomizer according to claim 1, characterized in that The shell assembly has a first end and a second end, and the first end and the second end are arranged opposite to each other along the extension direction of the shell assembly; the liquid storage chamber and the barrier member both have an extension length extending from the first end to the second end, and the extension length of the barrier member is smaller than the extension length of the liquid storage chamber; the overflow portion is arranged at the end of the barrier member away from the first end.

3. The atomizer according to claim 1, characterized in that The liquid storage cavity is annularly sleeved on the outside of the buffer cavity.

4. The atomizer according to claim 1, characterized in that The shell assembly is also provided with an injection channel, and both ends of the injection channel are respectively connected to the liquid storage cavity and the injection port, so that the aerosol-forming matrix passes through the injection port and the injection channel in sequence and flows into the liquid storage cavity.

5. The atomizer according to claim 4, characterized in that The atomizer further comprises a blocking member, which is arranged in the injection channel; the blocking member has a first position and a second position, wherein in the first position, the blocking member blocks an end of the injection channel away from the injection port, and in the second position, the blocking member opens an end of the injection channel away from the injection port.

6. The atomizer according to claim 4, characterized in that The shell assembly has a first end and a second end, and the first end and the second end are arranged opposite to each other along the extension direction of the shell assembly; the liquid injection port is arranged at the second end, and the liquid injection port extends in the direction from the second end to the first end to form the liquid injection channel; the end of the liquid injection channel away from the second end gradually increases in size along the direction from the second end to the first end.

7. The atomizer according to any one of claims 1 to 6, characterized in that The atomizer also includes a sealing member, which is arranged in the shell assembly, and the liquid storage space is formed between the sealing member and the shell assembly; a liquid outlet is provided on the sealing member, and the liquid outlet is connected with the liquid injection port, so that the aerosol-forming matrix flows into the liquid storage cavity through the liquid injection port and the liquid outlet in sequence.

8. The atomizer according to claim 7, characterized in that An atomizing cavity is arranged in the sealing member, and the atomizing core assembly is arranged in the atomizing cavity. A liquid inlet hole is arranged on a side of the sealing member close to the atomizing core assembly, and the atomizing core assembly is communicated with the buffer cavity through the liquid inlet hole.

9. The atomizer according to claim 8, characterized in that The shell assembly includes an outer shell, a base and a suction nozzle, the outer shell is connected to the base, the suction nozzle is arranged on a side of the outer shell away from the base, the barrier is arranged in the outer shell and extends in a direction from the outer shell to the base, and one end of the barrier away from the suction nozzle is aligned with the central axis of the liquid inlet hole.

10. An aerosol generating device, characterized in that: The invention comprises a power supply component and an atomizer as claimed in any one of claims 1 to 9.

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