Atomizer and aerosol generating device

Abstract

Embodiments of this application provide an atomizer (10) and an aerosol generating device. The atomizer includes an atomization core (11), a mounting assembly (12), and a liquid storage member (13). The mounting assembly is provided with a mounting cavity (12a), an exchange cavity (12b), an exchange channel (12c), and a plurality of exchange holes (12d). The atomization core is located in the mounting cavity and encloses a first space (12e) jointly with an inner wall of the mounting cavity, the exchange holes communicate the first space with the exchange cavity, the exchange channel communicates the exchange cavity with an exterior of the atomizer, entrances of at least some of the exchange holes are staggered from an outlet of the exchange channel, and the liquid storage member is arranged in the first space and is in fluid connection with the atomization core. The atomizer in the embodiments of this application increases an area in which the liquid storage member can come into contact with the aerosol generating substrate entering the first space. This is beneficial for the liquid storage member to absorb the aerosol generating substrate more evenly. The exchange holes help to limit an amount of the aerosol generating substrate flowing into the first space. Some of the plurality of exchange holes can be used for the aerosol generating substrate to pass through, and some other can be used for gas to pass through.

Description

TECHNICAL FIELD

[0001] Embodiments of the present utility model relate to the field of atomization technologies, and specifically, to an atomizer and an aerosol generating device.BACKGROUND

[0002] An aerosol generating device is configured to generate aerosols from an aerosol generating substrate, for a user to inhale.

[0003] The aerosol generating device includes an atomizer and an additional e-liquid chamber. The atomizer can communicate with the additional e-liquid chamber, so that an aerosol generating substrate in the additional e-liquid chamber can flow into the atomizer. The atomizer includes an atomization core and a liquid storage member, and the liquid storage member wraps at least a part of the atomization core. The aerosol generating substrate entering the atomizer can be absorbed by the liquid storage member and then released to the atomization core, to adjust a speed of the aerosol generating substrate flowing to the atomization core.

[0004] In the related technology, the atomizer is provided with an exchange channel. The exchange channel is configured to communicate with the additional e-liquid chamber, and the aerosol generating substrate in the additional e-liquid chamber passes through the exchange channel, to be in contact with the liquid storage member. Because a position of the exchange channel communicating with the additional e-liquid chamber is fixed relative to the liquid storage member, the aerosol generating substrate flowing out of the exchange channel is mainly absorbed by only some areas of the liquid storage member. It is easy to cause uneven liquid supply of the liquid storage member to the atomization core.SUMMARY

[0005] In view of this, embodiments of this application are expected to provide an atomizer and an aerosol generating device that are beneficial for a liquid storage member to convey an absorbed aerosol generating substrate to different parts of an atomization core more evenly.

[0006] To achieve the foregoing objective, technical solutions in the embodiments of this application are implemented as follows.

[0007] An embodiment of this application provides an atomizer, where the atomizer includes: an atomization core; a mounting assembly, provided with a mounting cavity, an exchange cavity, an exchange channel, and a plurality of exchange holes, the atomization core being located in the mounting cavity and enclosing a first space jointly with an inner wall of the mounting cavity, the exchange holes communicating the first space with the exchange cavity, the exchange channel communicating the exchange cavity with an exterior of the atomizer, and entrances of at least some of the exchange holes being staggered from an outlet of the exchange channel; and a liquid storage member, arranged in the first space and being in fluid connection with the atomization core.

[0008] In some embodiments, the atomization core is provided with an atomization cavity, the atomization cavity extends along a first direction, at least some of the exchange holes are arranged around an outer side of the atomization cavity, and an axis direction of the arrangement is along the first direction.

[0009] In some embodiments, at least some of the exchange holes are waist-type holes, and a long axis direction of the waist-type hole is the first direction.

[0010] In some embodiments, a diameter of an inscribed circle of a cross section at any position of the exchange hole along an extension direction of the exchange hole is a first diameter, and the first diameter ranges from 2.5 mm to 5 mm.

[0011] In some embodiments, an inner wall of the exchange cavity close to the top of the atomizer along the first direction is a first wall, an inner wall of at least some of the exchange holes close to the top of the atomizer along the first direction is a second wall, and the first wall is spaced from the second wall along the first direction and is located on one side of the second wall close to the top of the atomizer along the first direction.

[0012] In some embodiments, a spaced distance between the first wall and the second wall along the first direction is not less than 2 mm.

[0013] In some embodiments, an opening through which the exchange holes communicate with the exchange cavity is a first opening, and a spacing between inner walls of two sides of the exchange cavity along an orientation of the first opening is not less than 0.5 mm.

[0014] In some embodiments, an opening through which the exchange holes communicate with the first space is a second opening, and the liquid storage member blocks the second opening.

[0015] In some embodiments, the exchange channel includes a first channel and a second channel, an opening through which the first channel communicates with the exchange cavity is located on one side of the exchange cavity close to the top of the atomizer along the first direction, an opening through which the second channel communicates with the exchange cavity is located on one side of the exchange cavity away from the top of the atomizer along the first direction, a diameter of an inscribed circle of a cross section at any position of the first channel along an extension direction of the first channel is a second diameter, and the second diameter is not less than 2.5 mm.

[0016] In some embodiments, a diameter of an inscribed circle of a cross section at any position of the second channel along an extension direction of the second channel is a third diameter, and the third diameter is not less than 1.5 mm.

[0017] In some embodiments, the atomization core is provided with an atomization cavity, the atomization cavity extends along the first direction, the exchange channel is provided with a waist-type hole, a long axis direction of the exchange channel is the first direction, and a diameter of an arc part of the exchange channel is not less than 2.5 mm.

[0018] In some embodiments, the mounting assembly includes a housing, a sealing base, and a partition, the housing is provided with an accommodating cavity and the exchange channel, the exchange channel is located on one side of the accommodating cavity along a second direction and communicates the accommodating cavity with the exterior of the atomizer, the sealing base is arranged in the accommodating cavity, the sealing base is provided with a first empty cavity, one side of the first empty cavity facing the exchange channel along the second direction is open, the housing covers an open area of the first empty cavity, the first empty cavity communicates with the exchange channel, the partition is provided with the exchange holes, and the partition is arranged in the first empty cavity and separates the first empty cavity to form the mounting cavity and the exchange cavity.

[0019] An embodiment of this application further provides an aerosol generating device. The aerosol generating device includes an additional e-liquid chamber and the atomizer of any one of the foregoing embodiments, the additional e-liquid chamber is arranged on one side of the atomizer along the second direction, an additional storage cavity is arranged in the additional e-liquid chamber, the additional storage cavity includes a storage sub-cavity and a converging sub-cavity, one side of the converging sub-cavity along the first direction is open to form an opening to communicate with the storage sub-cavity, an inner wall of one side of the storage sub-cavity away from the top of the atomizer along the first direction is a converging wall, the opening is located on one end of the converging wall close to the atomizer along the second direction, the first direction intersects with the second direction, one side of the converging sub-cavity along the second direction is open to communicate with the exchange channel, and one end of the converging wall close to the exchange channel along the second direction is farther away from the top of the atomizer along the first direction compared with one end away from the exchange channel.

[0020] In some embodiments, the converging wall includes two sub-walls connected to each other, the two sub-walls are arranged along a third direction, the first direction, the second direction, and the third direction intersect with each other, one end of the sub-wall away from the other sub-wall along the third direction is closer to the top of the atomizer along the first direction compared with the other end, one part of the opening is located on one sub-wall, and the other part is located on the other sub-wall.

[0021] In the atomizer according to the embodiments of this application, the exchange cavity and the exchange holes are arranged, the aerosol generating substrate flows out of the exchange channel and enters the exchange cavity, and the aerosol generating substrate in the exchange cavity can come into contact with different areas of the liquid storage member through the plurality of exchange holes. This is beneficial to increase, in a case that a dimension, the number, and a position of the exchange channel are all determined, the number of areas in which the liquid storage member comes into contact with the aerosol generating substrate, and is beneficial for the liquid storage member to absorb the aerosol generating substrate more evenly, so that the atomization core can absorb the aerosol generating substrate more evenly and reduce a risk of problems such as dry heating of the atomization core. Some of the plurality of exchange holes can be used for the aerosol generating substrate to pass through, and some other can be used for gas to pass through, thereby reducing a risk of conflicts caused by the gas and the aerosol generating substrate simultaneously passing through a single exchange hole.BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a schematic diagram of an atomizer from a first perspective according to a first embodiment of this application; FIG. 2 is a schematic diagram of the embodiment in FIG. 1 from a second perspective; FIG. 3 is a schematic sectional diagram of a position A-A in FIG. 2; FIG. 4 is a partially enlarged schematic diagram of a position B in FIG. 3; FIG. 5 is a partially enlarged schematic diagram of a position C in FIG. 3; FIG. 6 is a schematic diagram of the embodiment in FIG. 1 from a third perspective; FIG. 7 is a schematic sectional diagram of a position D-D in FIG. 6; FIG. 8 is a schematic diagram of a partition according to an embodiment of this application; FIG. 9 is a schematic diagram of an atomizer according to a second embodiment of this application; FIG. 10 is a schematic diagram of an aerosol generating device according to a third embodiment of this application; FIG. 11 is a schematic diagram of the embodiment in FIG. 10 from another perspective; FIG. 12 is a schematic sectional diagram of a position E-E in FIG. 11; FIG. 13 is a schematic sectional diagram of an aerosol generating device according to a fourth embodiment of this application, where a sectioning position is the same as the position E-E in FIG. 11; FIG. 14 is a schematic diagram of an additional e-liquid chamber according to a fifth embodiment of this application; FIG. 15 is a schematic diagram of axial sectioning of a position F-F in FIG. 14; FIG. 16 is a schematic diagram of an additional e-liquid chamber according to a sixth embodiment of this application; FIG. 17 is a schematic diagram of axial sectioning of a position G-G in FIG. 14; and FIG. 18 is a schematic sectional diagram of a position H-H in FIG. 14.

[0023] Description of reference numerals: 10. Atomizer; 11. Atomization core; 11a. Atomization cavity; 12. Mounting assembly; 12a. Mounting cavity; 12b. Exchange cavity; 12c. Exchange channel; 12d. Exchange hole; 12e. First space; 12f. Air outlet channel; 12g. First wall; 12h. Second wall; 12i. First channel; 12j. Second channel; 121. Housing; 121a. Accommodating cavity; 122. Sealing base; 1221. Mounting base; 122a. First empty cavity; 123. Partition; 123a. Second empty cavity; 13. Liquid storage member; 20. Additional e-liquid chamber; 21. Housing assembly; 21a. Additional storage cavity; 21b. Insertion hole; 21c. Stop surface; 21d. Storage sub-cavity; 21e. Converging sub-cavity; 21f. Converging wall; 21g. Opening; 21h. Sub-wall; 211. Stop block; 211a. Stop hole; 22. Sealing member; 221. Blocking portion; 221a. Assembling hole; 221b. Mounting groove; 2211. Positioning protrusion; and 222. Elastic reset portion.DETAILED DESCRIPTION

[0024] It should be noted that embodiments and technical features in the embodiments in this application may be combined without conflicts. Detailed description in specific implementations should be understood as explanatory notes for the purpose of this application and should not be regarded as improper limitations on this application.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the technical field of this application; the terms used in this specification are only for describing specific embodiments, and are not intended to restrict this application; the terms "include" and "have" in the specification of this application and in the foregoing brief description of the drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0026] In the description of the embodiments of this application, technical terms "first", "second", and "third" are merely used to distinguish between different objects, and shall not be understood as an indication or implication of relative importance or an implicit indication of a quantity, a specific order, or a primary-secondary relationship of indicated technical features. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise definitely and specifically limited.

[0027] An "embodiment" mentioned in this specification means that a particular feature, structure, or characteristic described with reference to this embodiment may be included in at least one embodiment of this application. The phrase shown in various locations in this specification may not necessarily refer to a same embodiment, and is not an independent or optional embodiment exclusive from another embodiment. It is explicitly and implicitly understood by a person skilled in the art that embodiments described in this specification may be combined with another embodiment.

[0028] In the description of the embodiments of this application, for ease of description, as shown in FIG. 3, FIG. 6, FIG. 8, FIG. 12, FIG. 13, FIG. 15, FIG. 17, and FIG. 18, a direction of an arrow X is defined as a linear direction in which a "first direction" and a "vertical direction" are located. As shown in FIG. 3, FIG. 12, FIG. 13, FIG. 14, and FIG. 16, a direction of an arrow Y is defined as a linear direction in which a "second direction" is located. As shown in FIG. 14, FIG. 16, and FIG. 18, a direction of an arrow Z is defined as a linear direction in which a "third direction" is located.

[0029] In the description of the embodiments of this application, unless otherwise explicitly specified or defined, technical terms such as "mount", "connect", "connection", and "fix" should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; may be a mechanical connection, or may be an electrical connection; or may be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two elements or an interaction between two elements. A person of ordinary skill in the art may understand the specific meanings of the foregoing terms in the embodiments of this application according to specific circumstances.

[0030] In the description of the embodiments of this application, unless otherwise explicitly specified or defined, technical terms "contact" should be understood in a broad sense. The contact may be direct contact, or may be contact through an intermediate medium layer, may be contact where there is basically no interaction force between the two in contact, or may be contact where there is interaction force between the two in contact.

[0031] An embodiment of this application provides an atomizer 10. Referring to FIG. 1 to FIG. 8, the atomizer 10 is a part of an aerosol generating device, and is configured to convert an aerosol generating substrate into aerosols in a manner such as heating, for a user to inhale. The aerosol generating device further includes an additional e-liquid chamber 20, and the additional e-liquid chamber 20 can communicate with the atomizer 10, to provide the atomizer 10 with the aerosol generating substrate.

[0032] The atomizer 10 includes an atomization core 11, a mounting assembly 12, and a liquid storage member 13.

[0033] The mounting assembly 12 is provided with a mounting cavity 12a, an exchange cavity 12b, an exchange channel 12c, and a plurality of exchange holes 12d, the atomization core 11 is located in the mounting cavity 12a and encloses a first space 12e jointly with an inner wall of the mounting cavity 12a, the exchange holes 12d communicate the first space 12e with the exchange cavity 12b, the exchange channel 12c communicates the exchange cavity 12b with an exterior of the atomizer 10, entrances of at least some of the exchange holes 12d are staggered from an outlet of the exchange channel 12c, and the liquid storage member 13 is arranged in the first space 12e and is in fluid connection with the atomization core 11.

[0034] After the atomization core 11 comes into contact with the aerosol generating substrate, the aerosol generating substrate can be converted into aerosols in a manner such as heating.

[0035] The mounting cavity 12a is configured to accommodate at least a part of the atomization core 11. An inner wall of the mounting cavity 12a plays a role of positioning the atomization core 11, and a part of space of the mounting cavity 12a is used for forming the first space 12e.

[0036] The exchange channel 12c communicates with an exterior of the atomizer 10, so that the aerosol generating substrate of the additional e-liquid chamber 20 can enter the atomizer 10, and air in the atomizer 10 can be conveyed to the additional e-liquid chamber 20 through the exchange channel 12c.

[0037] A fluid channel including the exchange channel 12c, the exchange cavity 12b, the exchange holes 12d, and the first space 12e is formed in the atomizer 10. Gas and liquid can enter the first space 12e from the exterior the atomizer 10 through the fluid channel, or may be discharged from the first space 12e to the exterior the atomizer 10.

[0038] The liquid storage member 13 is provided with pores, to absorb the aerosol generating substrate through capillary action.

[0039] Fluid communication between the liquid storage member 13 and the atomization core 11 refers to that the fluid can flow from one of the two to the other. A specific manner of implementing the fluid communication between the two is not limited. For example, the two are in direct contact. For another example, a channel is provided between the two, so that the fluid can pass through the channel, to be in contact with the two.

[0040] After the liquid storage member 13 comes into contact with the aerosol generating substrate, through capillary action, the aerosol generating substrate can be absorbed by the liquid storage member 13 and stored in a space in the pore. At least some of the pores are in communication with each other, so that the aerosol generating substrate can pass through the liquid storage member 13, to be conveyed to the atomization core 11 that is in fluid communication with the liquid storage member 13. In this way, after the aerosol generating substrate on the atomization core 11 is consumed to a certain extent, the liquid storage member 13 can be used to supplement the atomization core 11 with the aerosol generating substrate, thereby reducing a probability that the atomization core 11 is directly immersed in the aerosol generating substrate. In addition, due to existence of the pores, the air flow can also pass through the liquid storage member 13 through the pores that are in communication with each other. That is, the channel formed by pores that are in communication with each other in the liquid storage member 13 not only allows the air flow to pass through, but also allows the aerosol generating substrate to pass through.

[0041] It may be understood that, after the aerosol generating substrate flows out of the exchange holes 12d into the first space 12e, at least a part of the aerosol generating substrate can be absorbed by the liquid storage member 13.

[0042] Fluid connection between the atomization core 11 and the liquid storage member 13 refers to that the aerosol generating substrate in the liquid storage member 13 can flow from the liquid storage member 13 to the atomization core 11.

[0043] The atomizer 10 is further provided with a vent channel, and the vent channel communicates the first space 12e with the exterior of the atomizer 10. With the consumption of the aerosol generating substrate in the atomizer 10 and the additional e-liquid chamber 20, a negative pressure is formed between the atomizer 10 and the additional e-liquid chamber 20, so that air outside the atomizer 10 can enter the atomizer 10 and the additional e-liquid chamber 20, and adverse effect formed when the aerosol generating substrate enters the atomizer 10 from the additional e-liquid chamber 20 due to the negative pressure can be reduced.

[0044] It may be understood that, in the atomizer 10, a liquid flow path formed by the aerosol generating substrate is as follows: exchange channel 12c→exchange cavity 12b→exchange holes 12d→first space 12e; and an air flow path of the vent channel is as follows: first space 12e→exchange holes 12d→exchange cavity 12b→exchange channel 12c. That is, a flow direction of the aerosol generating substrate is opposite to a flow direction of the air flow.

[0045] It may be understood that, if the exchange channel 12c directly communicates with the first space 12e, after the aerosol generating substrate enters the first space 12e, the aerosol generating substrate is mainly absorbed by an area of the liquid storage member 13 close to an opening through which the exchange channel 12c communicates with the first space 12e, and the aerosol generating substrate is conveyed to the atomization core 11 through the capillary action, so that it is difficult for an area of the liquid storage member 13 away from the opening through which the exchange channel 12c communicates with the first space 12e to absorb the aerosol generating substrate, and it tends to make it difficult for some areas in the liquid storage member 13 to play a role of absorbing and conveying the aerosol generating substrate.

[0046] Entrances of at least some of the exchange holes 12d are staggered from an outlet of the exchange channel 12c, so that after the aerosol generating substrate flows from the exchange channel 12c into the exchange cavity 12b, at least a part of the aerosol generating substrate can enter the exchange holes 12d only after changing a flow direction in the exchange cavity 12b. In this way, in a case that a dimension, the number, and a position of the exchange channel 12c are all determined, the aerosol generating substrate in the exchange cavity 12b can enter different areas in the first space 12e through the exchange holes 12d that are staggered from the exchange channel 12c, and is absorbed by different areas of the liquid storage member 13. This is beneficial for all areas of the liquid storage member 13 to absorb the aerosol generating substrate more evenly, thereby improving a utilization rate of the liquid storage member 13.

[0047] In the atomizer 10 in this embodiment of this application, the exchange cavity 12b and the exchange holes 12d are arranged, the aerosol generating substrate flows out of the exchange channel 12c and enters the exchange cavity 12b, and the aerosol generating substrate in the exchange cavity 12b can come into contact with different areas of the liquid storage member 13 through the plurality of exchange holes 12d. This is beneficial to increase, in a case that a dimension, the number, and a position of the exchange channel 12c are all determined, the number of areas in which the liquid storage member 13 comes into contact with the aerosol generating substrate, and is beneficial for the liquid storage member 13 to absorb the aerosol generating substrate more evenly, so that the atomization core 11 can absorb the aerosol generating substrate more evenly and reduce a risk of problems such as dry heating of the atomization core 11. Some of the plurality of exchange holes 12d can be used for the aerosol generating substrate to pass through, and some other can be used for gas to pass through, thereby reducing a risk of conflicts caused by the gas and the aerosol generating substrate simultaneously passing through a single exchange hole 12d. A specific manner in which the atomization core 11 is in liquid connection with the liquid storage member 13 is not limited. For example, the atomization core 11 is attached to the liquid storage member 13.

[0048] A specific number of the exchange holes 12d is not limited. In some embodiments, the number of the exchange holes 12d is three or more. This is beneficial to improve passing efficiency of the gas and the aerosol generating substrate.

[0049] It may be understood that, referring to FIG. 7, in a projective plane perpendicular to an outlet orientation of the exchange channel 12c, projections of entrances of some exchange holes 12d are located outside a projection range of the outlet of the exchange channel 12c, so that at least some of the entrances of the exchange holes 12d are staggered from the outlet of the exchange channel 12c.

[0050] In some embodiments, referring to FIG. 7, entrance orientations of some exchange holes 12d are provided with the outlet of the exchange channel 12c. In this way, it is beneficial to improve efficiency of the aerosol generating substrate in the exchange cavity 12b entering the first space 12e, and improve a speed of supplementing the atomization core 11 with the aerosol generating substrate.

[0051] In some embodiments, referring to FIG. 3, the atomization core 11 is provided with an atomization cavity 11a, and the atomization cavity 11a is isolated from the first space 12e and communicates with an air outlet channel 12f in the atomizer 10, so that aerosols in the atomization cavity 11a can be discharged from the atomizer 10, for a user to inhale. In some other embodiments, a part of surface of the atomization core 11 forms a part of inner wall of the first space 12e, to absorb the aerosol generating substrate, and another part of surface forms a part of surface of the air outlet channel 12f, so that aerosols can be discharged from the atomizer 10.

[0052] In some embodiments provided with the atomization cavity 11a, referring to FIG. 3 and FIG. 7, the atomization cavity 11a extends along the first direction, and the liquid storage member 13 covers around a peripheral side of the atomization core 11 perpendicular to the first direction. In this way, obstruction caused by the liquid storage member 13 to air inlet and air outlet of the atomization cavity 11a is reduced.

[0053] In some embodiments, referring to FIG. 7, at least some of the exchange holes 12d are arranged around an outer side of the atomization cavity 11a, and an axis direction of the arrangement is along the first direction. In this way, it is further beneficial to enable more areas of the liquid storage member 13 to directly adsorb the aerosol generating substrate flowing from the exchange holes 12d, so that the liquid storage member 13 adsorbs the aerosol generating substrate more evenly, and the atomization core 11 can adsorb the aerosol generating substrate more evenly, thereby reducing a risk of problems such as dry heating of the atomization core 11.

[0054] In some embodiments, in a process in which a user uses the aerosol generating device, the first direction is approximately along a vertical direction, and an outlet of the atomization cavity 11a is located at the top of the atomization cavity 11a.

[0055] In some embodiments, an opening through which the vent channel communicates with the first space 12e is located on one side of the first space 12e close to the top of the atomizer 10 along the first direction, so that in the process in which the user uses the aerosol generating device, the opening through which the vent channel communicates with the first space 12e is located on the top side of the first space 12e, and the aerosol generating substrate in the first space 12e is deposited at the bottom of the first space 12e under the effect of gravity, thereby reducing a risk that the aerosol generating substrate enters the vent channel and leaks.

[0056] The top of the atomizer 10 refers to a surface of the atomizer 10 facing away from a direction of gravity in the process in which the user uses the aerosol generating device.

[0057] It may be understood that in the process in which the user uses the aerosol generating device, air entering the first space 12e mainly accumulates at the top of the first space 12e.

[0058] In some embodiments, referring to FIG. 1 to FIG. 3, the mounting assembly 12 is provided with an air outlet channel 12f. The air outlet channel 12f extends along the first direction. An opening at one end of the air outlet channel 12f communicates with the atomization cavity 11a, and an opening at the other end is arranged at the top of the atomizer 10, to communicate with an exterior of the aerosol generating device. In the process in which the user uses the aerosol generating device, aerosols in the atomization cavity 11a enter the air outlet channel 12f, and then enter the mouth of the user through the air outlet channel 12f.

[0059] In some embodiments, referring to FIG. 8, at least some of the exchange holes 12d are waist-type holes, and a long axis direction of the waist-type hole is the first direction.

[0060] The long axis direction of the waist-type hole is a linear direction in which a connection line between circle centers of two arcs of the waist-type hole is located. In this way, it is beneficial to enable, in the first direction, more areas of the liquid storage member 13 to directly absorb the aerosol generating substrate that flows from the exchange holes 12d. It is beneficial to increase the dimension of the exchange holes 12d along the first direction, so that in the process in which the user uses the aerosol generating device, when there is less gas accumulated at the top of the first space 12e, the gas can pass through the exchange holes 12d, and the aerosol generating substrate can be more quickly absorbed by the part of the liquid storage member 13 close to the top of the first space 12e.

[0061] It may be understood that, because both the gas and the liquid aerosol generating substrate exist in the first space 12e, due to surface tension of the aerosol generating substrate, the gas may enter the aerosol generating substrate and exists in the form of bubbles.

[0062] In some embodiments, referring to FIG. 8, a diameter of an inscribed circle of a cross section at any position of the exchange hole 12d along an extension direction of the exchange hole 12d is a first diameter, and the first diameter is not less than 2.5mm (millimetre). That is, D 1 >2.5 mm.

[0063] In this way, it is beneficial for the bubbles formed by the gas to pass through the exchange holes 12d smoothly, and is beneficial to improve passing efficiency of the gas flow in the exchange holes 12d.

[0064] In some embodiments, referring to FIG. 8, a diameter of an inscribed circle of a cross section at any position of the exchange hole 12d along an extension direction of the exchange hole 12d is a first diameter, and the first diameter is not greater than 5 mm (millimetre). That is, D1≤5 mm.

[0065] In this way, it is beneficial for the exchange holes 12d to restrict a flow rate of the aerosol generating substrate entering the first space 12e from the exchange cavity 12b, reduces a probability that excessive aerosol generating substrate in the first space 12e affects flow of gas in the first space 12e and abnormal sound such as a gurgling sound formed by flow of bubbles, reduces a probability that the atomization core 11 is immersed in the aerosol generating substrate and a risk of liquid leakage, and helps to improve inhaling experience of the user.

[0066] In some embodiments, the dimension of the first diameter ranges from 2.5 mm to 5 mm.

[0067] A specific value of the first diameter may be 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, or the like.

[0068] In some embodiments, referring to FIG. 4, an inner wall of the exchange cavity 12b close to the top of the atomizer 10 along the first direction is a first wall 12g, an inner wall of at least some of the exchange holes 12d close to the top of the atomizer 10 along the first direction is a second wall 12h, and the first wall 12g is spaced from the second wall 12h along the first direction and is located on one side of the second wall 12h close to the top of the atomizer 10 along the first direction.

[0069] It may be understood that, due to the effect of floating force of the aerosol generating substrate, the bubbles in the aerosol generating substrate move upwards along the first direction and gather.

[0070] The first wall 12g is spaced from the second wall 12h along the first direction, and the first wall 12g is closer to the top of the atomizer 10 than the second wall 12h. Therefore, in the process in which a user uses the aerosol generating device, after entering the exchange cavity 12b from the exchange holes 12d, the bubbles can float to a space that is between the first wall 12g and the second wall 12h of the exchange cavity 12b along the first direction. This reduces obstruction to flow of the aerosol generating substrate and other bubbles caused by bubbles blocking the opening through which the exchange holes 12d communicate with the exchange cavity 12b.

[0071] In some embodiments, referring to FIG. 4, a spaced distance between the first wall 12g and the second wall 12h along the first direction is not less than 2 mm. That is, D2≥2 mm.

[0072] In this way, it is further beneficial for the space that is between the first wall 12g and the second wall 12h of the exchange cavity 12b along the first direction to accommodate bubbles, and further reduces the obstruction to flow of the aerosol generating substrate and other bubbles caused by bubbles blocking the opening through which the exchange holes 12d communicate with the exchange cavity 12b.

[0073] A specific dimension of the spaced distance between the first wall 12g and the second wall 12h along the first direction may be 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, or the like.

[0074] In some embodiments, referring to FIG. 5 and FIG. 7, the opening through which the exchange holes 12d communicate with the exchange cavity 12b is a first opening, and a spacing between inner walls of two sides of the exchange cavity 12b along an orientation of the first opening is not less than 0.5 mm. That is, D3≥0.5 mm.

[0075] In this way, it is beneficial for the bubbles to flow into the exchange channel 12c after entering the exchange cavity 12b from the exchange holes 12d, reduces obstruction to flow of the bubbles due to a space dimension limitation of the exchange cavity 12b, and helps improve flow efficiency of the bubbles.

[0076] A specific value of the spacing between inner walls of two sides of the exchange cavity 12b along an orientation of the first opening may be 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, or the like.

[0077] In some embodiments, referring to FIG. 4, FIG. 5, and FIG. 7, an opening through which the exchange holes 12d communicate with the first space 12e is a second opening, and the liquid storage member 13 blocks the second opening.

[0078] In this way, it is beneficial to enable the aerosol generating substrate flowing from the exchange holes 12d into the first space 12e to be directly absorbed by the liquid storage member 13, thereby reducing a probability that a part of the atomization core 11 is immersed in the aerosol generating substrate.

[0079] In some embodiments, referring to FIG. 7, the exchange holes 12d extend along a linear direction to communicate the exchange cavity 12b with the first space 12e. In this way, it is beneficial to shorten a length of a flow path of the bubbles and the aerosol generating substrate in the exchange hole 12d, thereby improving flow efficiency thereof.

[0080] In some embodiments, referring to FIG. 3 and FIG. 6, there are a plurality of exchange channels 12c. This is beneficial to improve flow efficiency of bubbles and the aerosol generating substrate between the atomizer 10 and the additional e-liquid chamber 20, and improve a speed of eliminating a negative pressure in the atomizer 10 and the additional e-liquid chamber 20.

[0081] In some embodiments, referring to FIG. 3 and FIG. 6, the exchange channel 12c includes a first channel 12i and a second channel 12j, an opening through which the first channel 12i communicates with the exchange cavity 12b is located on one side of the exchange cavity 12b close to the top of the atomizer 10 along the first direction, and an opening through which the second channel 12j communicates with the exchange cavity 12b is located on one side of the exchange cavity 12b away from the top of the atomizer 10 along the first direction.

[0082] That is, there are at least two exchange channels 12c, at least one is the first channel 12i, and at least one is the second channel 12j.

[0083] The opening through which the first channel 12i communicates with the exchange cavity 12b is located on one side of the exchange cavity 12b close to the top of the atomizer 10 along the first direction, which indicates that on a wall surface of the exchange cavity 12b on which the opening through which the first channel 12i communicates with the exchange cavity 12b is located, a central plane of the wall surface along the first direction is used as a boundary, the opening through which the first channel 12i communicates with the exchange cavity 12b is located on one side of the central plane close to the top of the atomizer 10.

[0084] The opening through which the second channel 12j communicates with the exchange cavity 12b is located on one side of the exchange cavity 12b away from the top of the atomizer 10 along the first direction, which indicates that on a wall surface of the exchange cavity 12b on which the opening through which the second channel 12j communicates with the exchange cavity 12b is located, a central plane of the wall surface along the first direction is used as a boundary, the opening through which the second channel 12j communicates with the exchange cavity 12b is located on one side of the central plane away from the top of the atomizer 10.

[0085] In this way, in a case that the user uses the aerosol generating device, on the one hand, it is beneficial for bubbles entering the exchange cavity 12b to enter the first channel 12i after floating, and are directly discharged from the atomizer 10 through the first channel 12i, to reduce accumulation of bubbles in the exchange cavity 12b after floating. On the other hand, under the effect of gravity and floating force, it is difficult for the bubbles to enter the second channel 12j, so that only the aerosol generating substrate flows in the second channel 12j. It is beneficial to reduce obstruction to flow of the aerosol generating substrate caused by bubbles, and improve flow efficiency of the aerosol generating substrate.

[0086] In some embodiments, an edge of the opening through which the first channel 12i communicates with the exchange cavity 12b is flush with an inner wall of one side of the exchange cavity 12b close to the top of the atomizer 10 along the first direction, so that in the process in which the user uses the aerosol generating device, bubbles at the top of the exchange cavity 12b can directly enter the first channel 12i.

[0087] In some embodiments, an edge of the opening through which the second channel 12j communicates with the exchange cavity 12b is flush with an inner wall of one side of the exchange cavity 12b away from the top of the atomizer 10 along the first direction, so that in the process in which the user uses the aerosol generating device, adverse effect of flow of the aerosol generating substrate entering the exchange cavity 12b on movement of bubbles flowing out through the first channel 12i is reduced.

[0088] In some embodiments, referring to FIG. 3, both the opening through which the first channel 12i communicates with the exchange cavity 12b and the opening through which the second channel 12j communicates with the exchange cavity 12b are located on a same wall surface of the exchange cavity 12b, thereby helping synchronously manufacture the first channel 12i and the second channel 12j.

[0089] In some embodiments, referring to FIG. 6, a diameter of an inscribed circle of a cross section at any position of the first channel 12i along an extension direction of the first channel 12i is a second diameter, and the second diameter is not less than 2.5 mm. That is, D4≥2.5 mm.

[0090] In this way, it is beneficial for bubbles to smoothly enter the first channel 12i, thereby improving efficiency of gas entering the additional e-liquid chamber 20.

[0091] A specific value of the second diameter may be 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, or the like.

[0092] In some embodiments, referring to FIG. 6, a diameter of an inscribed circle of a cross section at any position of the second channel 12j along an extension direction of the second channel 12j is a third diameter, and the third diameter is not less than 1.5 mm. That is, D5≥1.5 mm.

[0093] In this way, it is beneficial to increase a flow rate of the aerosol generating substrate flowing in the second channel 12j, and reduce a flow resistance of the aerosol generating substrate with a relatively low liquid level in the process in which the user uses the aerosol generating device.

[0094] A specific value of the third diameter may be 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, or the like.

[0095] In some embodiments, referring to FIG. 9 and FIG. 13, the exchange channel 12c is a waist-type hole, and a long axis direction of the exchange channel 12c is the first direction.

[0096] In this way, in a case that the first direction is approximately along a gravity direction, it is beneficial for the gas to enter the exchange channel 12c from the exchange cavity 12b, so that when the gas flows in the exchange channel 12c, the aerosol generating substrate flows below the gas.

[0097] In some embodiments in which the exchange channel 12c is a waist-type hole, a diameter of an arc part of the exchange channel 12c is not less than 2.5 mm.

[0098] In this way, it is beneficial for the bubbles to enter the exchange channel 12c more smoothly and flow in the exchange channel 12c.

[0099] A specific value of the diameter of the arc part of the exchange channel 12c may be 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, or the like.

[0100] In some embodiments, referring to FIG. 3, FIG. 5, and FIG. 7, the mounting assembly 12 includes a housing 121, a sealing base 122, and a partition 123, the housing 121 is provided with an accommodating cavity and the exchange channel 12c, the exchange channel 12c is located on one side of the accommodating cavity along a second direction and communicates the accommodating cavity with the exterior of the atomizer 10, the sealing base 122 is arranged in the accommodating cavity, the sealing base 122 is provided with a first empty cavity 122a, one side of the first empty cavity 122a facing the exchange channel 12c along the second direction is open, the housing 121 covers an open area of the first empty cavity 122a, the first empty cavity 122a communicates with the exchange channel 12c, the partition 123 is provided with the exchange holes 12d, and the partition 123 is arranged in the first empty cavity 122a and separates the first empty cavity 122a to form the mounting cavity 12a and the exchange cavity 12b.

[0101] The accommodating cavity of the housing 121 is a space required for mounting the atomization core 11, the sealing base 122, and the partition 123.

[0102] The sealing base 122 is made of an elastic material. The sealing base 122 abuts against the inner wall of the accommodating cavity, so that the sealing base 122 is elastically deformed, thereby making it difficult for the gas and the aerosol generating substrate to leak from the second space.

[0103] The partition 123 is sandwiched between inner walls of two sides of the first empty cavity 122a along the first direction, so that it is difficult for the gas and the aerosol generating substrate in the mounting cavity 12a to leak through deformation of the sealing base 122.

[0104] A specific type of the elastic material used in the sealing base 122 is not limited, for example, rubber or silicone.

[0105] It may be understood that the inner wall of the exchange cavity 12b is formed by a part of surface of the partition 123, the sealing base 122, and the housing 121.

[0106] In some embodiments, referring to FIG. 8, the exchange holes 12d are arranged on a peripheral side of the partition 123 perpendicular to the first direction, so that the plurality of exchange holes 12d can be arranged around the liquid storage member 13.

[0107] In some embodiments, only one side of the first empty cavity 122a facing the exchange channel 12c along the second direction is open, to help improve sealing of the second space.

[0108] The sealing base 122 may be in an integral structure, or a split structure formed by splicing a plurality of parts, to help reduce manufacturing costs.

[0109] For example, referring to FIG. 3, the sealing base 122 includes at least two mounting bases 1221, the two mounting bases 1221 are attached to each other in a sealed manner along the first direction and jointly enclose the first empty cavity 122a. One end of the partition 123 along the first direction is attached to one mounting base 1221 in a sealed manner, and the other end is attached to the other mounting base 1221 in a sealed manner.

[0110] In some embodiments, referring to FIG. 8, the partition 123 is in a hollow cylinder structure, the partition 123 is provided with a second empty cavity 123a, the second empty cavity 123a extends through the partition 123 along the first direction, and the sealing base 122 covers openings at two ends of the second empty cavity 123a.

[0111] An embodiment of this application further provides an aerosol generating device. Referring to FIG. 10 to FIG. 13, the aerosol generating device includes an additional e-liquid chamber 20 and the atomizer 10 according to any one of the foregoing embodiments. The additional e-liquid chamber 20 is arranged on one side of the atomizer 10 along a second direction, a first direction intersects with the second direction, an additional storage cavity 21a is arranged in the additional e-liquid chamber 20, and the additional storage cavity 21a can communicate with an exchange channel 12c.

[0112] The additional storage cavity 21a is configured to store an aerosol generating substrate.

[0113] The aerosol generating substrate in the additional storage cavity 21a can enter the atomizer 10 through the exchange channel 12c, and is supplemented to a first space 12e, thereby prolonging an inhaling life of the atomizer 10.

[0114] The additional e-liquid chamber 20 is in a detachable configuration with the atomizer 10, so that the additional e-liquid chamber 20 is replaced with a new one after the aerosol generating substrate in the additional storage cavity 21a is exhausted.

[0115] The additional e-liquid chamber 20 is located on one side of the atomizer 10 along the second direction, to help reduce a dimension of the exchange channel 12c.

[0116] In some embodiments, the first direction is perpendicular to the second direction.

[0117] In some embodiments, referring to FIG. 14 to FIG. 18, the additional e-liquid chamber 20 includes a housing assembly 21 and a sealing member 22. The housing assembly 21 is provided with an additional storage cavity 21a and an insertion hole 21b, and the insertion hole 21b communicates the additional storage cavity 21a with an exterior of the additional e-liquid chamber 20. The sealing member 22 includes a blocking portion 221 and an elastic reset portion 222, the blocking portion 221 is arranged in the additional storage cavity 21a and blocks the insertion hole 21b, and a part of the elastic reset portion 222 is fixed relative to the housing assembly 21. The insertion hole 21b is configured to push the blocking portion 221 to separate from the insertion hole 21b when the atomizer 10 is inserted. In a state in which the blocking portion 221 is separated from the insertion hole 21b, the elastic reset portion 222 is elastically deformed, so that the blocking portion 221 has a moving tendency to move toward the insertion hole 21b, to block the insertion hole 21b.

[0118] At least a part of the atomizer 10 is inserted into the insertion hole 21b until the atomizer 10 abuts against the blocking portion 221, to push the blocking portion 221 to move, so that the blocking portion 221 is separated from the insertion hole 21b, the exchange channel 12c can communicate with the additional storage cavity 21a, and the aerosol generating substrate in the additional storage cavity 21a can enter the atomizer 10.

[0119] In this way, an elastic action force exerted by the elastic reset portion 222 on the blocking portion 221 can, on the one hand, help to keep a position of the blocking portion 221 in the additional storage cavity 21a and reduce abnormal sound generated when the blocking portion 221 shakes in the additional storage cavity 21a in a state in which the atomizer 10 is inserted into the insertion hole 21b. On the other hand, it is convenient for the blocking portion 221 to block the insertion hole 21b again after the atomizer 10 is pulled out from the insertion hole 21b. This reduces a probability that the residual aerosol generating substrate in the additional storage cavity 21a leaks after the additional e-liquid chamber 20 is removed from the aerosol generating device.

[0120] In some embodiments in which there are a plurality of exchange channels 12c, referring to FIG. 12 and FIG. 13, the number of the insertion holes 21b, the number of the blocking portions 221, and the number of the exchange channels 12c are the same.

[0121] In some embodiments, referring to FIG. 17, a surface of one side of the blocking portion 221 facing the insertion hole 21b is provided with an assembling hole 221a, and both the assembling hole 221a and the insertion hole extend along the second direction. One side of the assembling hole 221a facing the atomizer 10 along the second direction is open, and the other side is a closed end. The assembling hole 221a is configured for inserting a part of the atomizer 10, to reduce a probability that the atomizer 10 is separated from the blocking portion 221 in a process in which the atomizer 10 pushes the blocking portion 221 to move.

[0122] In some embodiments, referring to FIG. 15 and FIG. 17, the elastic reset portion 222 is located in the additional storage cavity 21a. In this way, a probability that the elastic reset portion 222 is exposed to an exterior of the housing assembly 21 and is damaged is reduced.

[0123] In some embodiments, the blocking portion 221 and the elastic reset portion 222 are made of a food-grade material, for example, food-grade silicone, to reduce a probability that the blocking portion 221 and the elastic reset portion 222 pollute the aerosol generating substrate in the additional storage cavity 21a.

[0124] In some embodiments, there are a plurality of elastic reset portions 222 corresponding to one blocking portion 221, so that in a case that an elastic action force of some of the elastic reset portions 222 fails, an elastic action force can still be exerted on the blocking portion 221.

[0125] The plurality of elastic reset portions 222 indicates that the number of the elastic reset portions 222 is not less than two.

[0126] In some embodiments in which there are a plurality of elastic reset portions 222, referring to FIG. 14 and FIG. 15, the insertion hole 21b extends along the second direction, the elastic reset portion 222 extends perpendicular to the second direction, and the elastic reset portions 222 are uniformly arranged around the blocking portion 221 along an axis extending in the second direction.

[0127] Under a guiding action of the insertion hole 21b, the atomizer 10 pushes the blocking portion 221 to move along the first direction, to drive the elastic reset portion 222 to stretch, so that the elastic reset portion 222 exerts an elastic action force on the blocking portion 221.

[0128] After the elastic reset portion 222 is stretched, the elastic action force exerted by the elastic reset portion 222 on the blocking portion 221 may be decomposed into a first component force along the first direction and a second component force perpendicular to the first direction. Under the action of the first component force, the blocking portion 221 can move along the first direction. The elastic reset portions 222 are uniformly arranged, so that second component forces generated by the elastic reset portions 222 balance each other. This is beneficial for the blocking portion 221 to keep stable in a position perpendicular to the first direction, and is beneficial for the blocking portion 221 to accurately block the insertion hole 21b after the atomizer 10 is pulled out of the insertion hole 21b.

[0129] That the elastic reset portions 222 are uniformly arranged indicates that in a projection perpendicular to the first direction, angles between geometric centers of projection profiles of any two adjacent elastic reset portions 222 are the same. For example, when there are two elastic reset portions 222, an angle between geometric centers of projection profiles of the two elastic reset portions 222 is 180°. For example, when there are three elastic reset portions 222, an angle between geometric centers of projection profiles of two elastic reset portions 222 is 120°. When there are four elastic reset portions 222, an angle between geometric centers of projection profiles of two elastic reset portions 222 is 90°.

[0130] In some embodiments, referring to FIG. 17, the additional storage cavity 21a is provided with a stop surface 21c, the stop surface 21c is located on one side of the blocking portion 221 away from the insertion hole 21b along the second direction, and the elastic reset portion 222 is sandwiched between the stop surface 21c and the blocking portion 221.

[0131] In this way, it is beneficial to reduce blocking of the elastic reset portion 222 on the aerosol generating substrate in the additional storage cavity 21a flowing into the exchange channel 12c and blocking on the gas entering the additional storage cavity 21a from the exchange channel 12c.

[0132] In some embodiments, referring to FIG. 17, an inner wall of one side of the additional storage cavity 21a along the first direction is provided with a stop block 211, the stop block 211 is provided with a stop hole 211a, one side of the stop hole 211a facing the blocking portion 221 along the second direction is open, an inner wall of the stop hole 211a away from an open position thereof along the second direction forms a stop surface 21c, and a part of the elastic reset portion 222 is located in the stop hole 211a.

[0133] In this way, the stop hole 211a limits the elastic reset portion 222, and reduces a probability that the elastic reset portion 222 is separated from the stop surface 21c in a telescoping deformation process.

[0134] A specific structure of the elastic reset portion 222 is not limited. In some embodiments, referring to FIG. 15, the elastic reset portion 222 is a plate-shaped structure member of food-grade silicone material. In some other embodiments, referring to FIG. 17, the elastic reset portion 222 is a spring.

[0135] In some embodiments in which the elastic reset portion 222 is a spring, referring to FIG. 17, one side of the blocking portion 221 away from the insertion hole 21b along the second direction is provided with a mounting groove 221b. One side of the mounting groove 221b away from the insertion hole 21b along the second direction is open, the mounting groove 221b is provided with a positioning protrusion 2211 extending along the second direction, a part of the elastic reset portion 222 is embedded in the mounting groove 221b, and the positioning protrusion 2211 is embedded in the elastic reset portion 222.

[0136] The positioning protrusion 2211 and the inner wall of the mounting groove 221b limit the elastic reset portion 222, and reduces a probability that the elastic reset portion 222 is separated from the blocking portion 221 in a telescoping deformation process.

[0137] In some embodiments, referring to FIG. 16 to FIG. 18, the additional storage cavity 21a includes a storage sub-cavity 21d and a converging sub-cavity 21e, one side of the converging sub-cavity 21e along the first direction is open to form an opening 21g to communicate with the storage sub-cavity 21d, an inner wall of one side of the storage sub-cavity 21d away from the top of the atomizer 10 along the first direction is a converging wall 21f, the opening 21g is located on one end of the converging wall 21f close to the atomizer 10 along the second direction, the first direction intersects with the second direction, and one side of the converging sub-cavity 21e along the second direction is open to communicate with the exchange channel 12c.

[0138] The converging wall 21f is one of two inner walls on two sides of the storage sub-cavity 21d along the first direction.

[0139] In this way, under the effect of gravity, with the consumption of the aerosol generating substrate in the additional storage cavity 21a, the finally residual aerosol generating substrate can still accumulate in the converging sub-cavity 21e and flow into the exchange channel 12c, thereby improving a utilization rate of the aerosol generating substrate in the additional storage cavity 21a.

[0140] In some embodiments, referring to FIG. 17, the stop block 211 is arranged on the converging wall 21f.

[0141] In some embodiments, referring to FIG. 17, one end of the converging wall 21f close to the exchange channel 12c along the second direction is farther away from the top of the atomizer 10 along the first direction compared with one end away from the exchange channel 12c.

[0142] That is, the converging wall 21f is obliquely arranged. In a case that the first direction is approximately along a vertical direction, one end of the converging wall 21f close to the exchange channel 12c along the second direction is lower than one end away from the exchange channel 12c.

[0143] In this way, under the effect of gravity, the aerosol generating substrate on the converging wall 21f can flow along the converging wall 21f toward the opening 21g and finally flow into the converging sub-cavity 21e. This is beneficial to further improve the utilization rate of the aerosol generating substrate in the additional storage cavity 21a.

[0144] In some embodiments, referring to FIG. 18, the converging wall 21f includes two sub-walls 21h connected to each other, the two sub-walls 21h are arranged along a third direction, the first direction, the second direction, and the third direction intersect with each other, one end of the sub-wall 21h away from the other sub-wall 21h along the third direction is closer to the top of the atomizer 10 along the first direction compared with the other end, one part of the opening 21g is located on one sub-wall 21h, and the other part is located on the other sub-wall 21h.

[0145] That is, the sub-wall 21h is obliquely arranged. When the first direction is approximately along the vertical direction, one end of the sub-wall 21h away from the other sub-wall 21h along the third direction is higher than one end close to the other sub-wall 21h.

[0146] In this way, under the effect of gravity, the aerosol generating substrate on the sub-wall 21h can flow along the sub-wall 21h toward the opening 21g and finally flow into the converging sub-cavity 21e. This is beneficial to further improve the utilization rate of the aerosol generating substrate in the additional storage cavity 21a.

[0147] In some embodiments, the first direction, the second direction, and the third direction are perpendicular to each other.

[0148] In some embodiments, referring to FIG. 17, one end of the sub-wall 21h close to the exchange channel 12c along the second direction is farther away from the top of the atomizer 10 along the first direction compared with one end away from the exchange channel 12c.

[0149] In this way, under the effect of gravity, it is beneficial for more aerosol generating substrate to converge into the converging sub-cavity 21e.

[0150] In some embodiments, referring to FIG. 17, an inner wall of one side of the converging sub-cavity 21e away from the opening 21g forms an inner wall of one end of the additional storage cavity 21a along the first direction. In this way, it is beneficial for the inner wall of one side of the converging sub-cavity 21e away from the opening 21g to form a lowest inner wall of the additional storage cavity 21a, to facilitate convergence of the aerosol generating substrate for flowing to the exchange channel 12c.

[0151] The embodiments / implementations provided in this application may be combined with each other without contradictions.

[0152] The description above is merely preferred embodiments of this application and are not used for limiting the embodiments of this application, and the embodiments of this application may be variously modified and changed for those skilled in the art.

Claims

1. An atomizer, wherein the atomizer comprises: an atomization core; a mounting assembly, provided with a mounting cavity, an exchange cavity, an exchange channel, and a plurality of exchange holes, the atomization core being located in the mounting cavity and enclosing a first space jointly with an inner wall of the mounting cavity, the exchange holes communicating the first space with the exchange cavity, the exchange channel communicating the exchange cavity with an exterior of the atomizer, and entrances of at least some of the exchange holes being staggered from an outlet of the exchange channel; and a liquid storage member, arranged in the first space and being in fluid connection with the atomization core.

2. The atomizer of claim 1, wherein the atomization core is provided with an atomization cavity, the atomization cavity extends along a first direction, at least some of the exchange holes are arranged around an outer side of the atomization cavity, and an axis direction of the arrangement is along the first direction.

3. The atomizer of claim 1 or 2, wherein at least some of the exchange holes are waist-type holes, and a long axis direction of the waist-type hole is the first direction.

4. The atomizer of claim 1, wherein a diameter of an inscribed circle of a cross section at any position of the exchange hole along an extension direction of the exchange hole is a first diameter, and the first diameter ranges from 2.5 mm to 5 mm.

5. The atomizer of claim 1, wherein an inner wall of the exchange cavity close to the top of the atomizer along the first direction is a first wall, an inner wall of at least some of the exchange holes close to the top of the atomizer along the first direction is a second wall, and the first wall is spaced from the second wall along the first direction and is located on one side of the second wall close to the top of the atomizer along the first direction.

6. The atomizer of claim 5, wherein a spaced distance between the first wall and the second wall along the first direction is not less than 2 mm.

7. The atomizer of claim 1, wherein an opening through which the exchange holes communicate with the exchange cavity is a first opening, and a spacing between inner walls of two sides of the exchange cavity along an orientation of the first opening is not less than 0.5 mm.

8. The atomizer of claim 1 or 7, wherein an opening through which the exchange holes communicate with the first space is a second opening, and the liquid storage member blocks the second opening.

9. The atomizer of claim 1, wherein the exchange channel comprises a first channel and a second channel, an opening through which the first channel communicates with the exchange cavity is located on one side of the exchange cavity close to the top of the atomizer along the first direction, an opening through which the second channel communicates with the exchange cavity is located on one side of the exchange cavity away from the top of the atomizer along the first direction, a diameter of an inscribed circle of a cross section at any position of the first channel along an extension direction of the first channel is a second diameter, and the second diameter is not less than 2.5 mm.

10. The atomizer of claim 1 or 9, wherein a diameter of an inscribed circle of a cross section at any position of the second channel along an extension direction of the second channel is a third diameter, and the third diameter is not less than 1.5 mm.

11. The atomizer of claim 1, wherein the atomization core is provided with an atomization cavity, the atomization cavity extends along the first direction, the exchange channel is provided with a waist-type hole, a long axis direction of the exchange channel is the first direction, and a diameter of an arc part of the exchange channel is not less than 2.5 mm.

12. The atomizer of any one of claims 1 to 11, wherein the mounting assembly comprises a housing, a sealing base, and a partition, the housing is provided with an accommodating cavity and the exchange channel, the exchange channel is located on one side of the accommodating cavity along a second direction and communicates the accommodating cavity with the exterior of the atomizer, the sealing base is arranged in the accommodating cavity, the sealing base is provided with a first empty cavity, one side of the first empty cavity facing the exchange channel along the second direction is open, the housing covers an open area of the first empty cavity, the first empty cavity communicates with the exchange channel, the partition is provided with the exchange holes, and the partition is arranged in the first empty cavity and separates the first empty cavity to form the mounting cavity and the exchange cavity.

13. An aerosol generating device, wherein the aerosol generating device comprises an additional e-liquid chamber and the atomizer of any one of claims 1 to 12, the additional e-liquid chamber is arranged on one side of the atomizer along the second direction.

14. The atomizer of claim 13, wherein an additional storage cavity is arranged in the additional e-liquid chamber, the additional storage cavity comprises a storage sub-cavity and a converging sub-cavity, one side of the converging sub-cavity along the first direction is open to form an opening to communicate with the storage sub-cavity, an inner wall of one side of the storage sub-cavity away from the top of the atomizer along the first direction is a converging wall, the opening is located on one end of the converging wall close to the atomizer along the second direction, the first direction intersects with the second direction, one side of the converging sub-cavity along the second direction is open to communicate with the exchange channel, and one end of the converging wall close to the exchange channel along the second direction is farther away from the top of the atomizer along the first direction compared with one end away from the exchange channel.

15. The atomizer of claim 14, wherein the converging wall comprises two sub-walls connected to each other, the two sub-walls are arranged along a third direction, the first direction, the second direction, and the third direction intersect with each other, one end of the sub-wall away from the other sub-wall along the third direction is closer to the top of the atomizer along the first direction compared with the other end, one part of the opening is located on one sub-wall, and the other part is located on the other sub-wall.

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