Atomizer and aerosol generation apparatus

Abstract

An atomizer and an aerosol generation apparatus. The atomizer comprises a housing assembly and an atomization base. The housing assembly comprises a mouthpiece. An air discharge channel extending in a first direction is provided in the interior of the mouthpiece. A liquid storage cavity is provided in the interior of the housing assembly and is used to store an aerosol-generating matrix. At least a portion of the atomization base is arranged in the housing assembly. An atomization cavity and at least one liquid intake channel are formed in the atomization base. The atomization cavity is in communication with the air discharge channel, and a liquid inlet of the liquid intake channel is in communication with the liquid storage cavity. In a cross-section perpendicular to the first direction, the cross-sectional dimension of the mouthpiece in a second direction is greater than that in a third direction. On a projection plane perpendicular to the first direction, a line connecting the liquid inlet of the at least one liquid intake channel and the center of the air discharge channel is L1, the included angle between L1 and the second direction being 60° to 90°. The first direction, the second direction, and the third direction intersect. The atomizer in the embodiments of the present disclosure facilitates improved utilization of the aerosol-generating matrix.

Description

Atomizer and aerosol generating device

[0001] The present disclosure is based on and claims priority to patent applications with application numbers 202411723214.1, filing date of November 28, 2024, 202411265990.1, filing date of September 10, 2024, 202411265998.8, filing date of September 10, 2024, and 202411267411.7, filing date of September 10, 2024, the contents of which are hereby incorporated by reference in their entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the field of atomization technology, and in particular, to an atomizer and an aerosol generating device. BACKGROUND

[0003] The aerosol generating device generally comprises an atomizer and a power component electrically connected to the atomizer. The atomizer can atomize the aerosol generating substrate stored in the liquid storage cavity in an ultrasonic atomization manner or a heat-not-burn manner under the action of the electric drive of the power component, to form an aerosol for a user to use.

[0004] In the related art, because the suction nozzle can limit the suction direction of the user, in the case that the aerosol generating substrate in the liquid storage cavity is less, the aerosol generating substrate cannot enter the liquid inlet channel, thereby reducing the utilization rate of the aerosol generating substrate. SUMMARY

[0005] Therefore, the embodiments of the present disclosure aim to provide an atomizer and an aerosol generating device, which can improve the utilization rate of the aerosol generating substrate.

[0006] To this end, a first aspect of the embodiments of the present disclosure provides an atomizer, comprising:

[0007] A housing assembly, the housing assembly comprising a suction nozzle, the inside of the suction nozzle having an air outlet channel extending in a first direction, the inside of the housing assembly having a liquid storage cavity, the liquid storage cavity being used to store an aerosol generating substrate;

[0008] An atomization seat, at least a portion of the atomization seat being arranged in the housing assembly, the atomization seat being formed with an atomization cavity and at least one liquid inlet channel, the atomization cavity being in communication with the air outlet channel, the liquid inlet channel having a liquid inlet port in communication with the liquid storage cavity;

[0009] In a cross section perpendicular to the first direction, the cross section of the nozzle has a dimension along a second direction that is greater than a dimension along a third direction; in a projection plane perpendicular to the first direction, a line between the liquid inlet of the at least one liquid inlet channel and the center of the air outlet channel is L1, and an angle between L1 and the second direction is 60°-90°, the first direction, the second direction, and the third direction intersect.

[0010] In some embodiments, the atomizer comprises an atomization assembly, the atomization assembly comprises a liquid guide, the interior of the atomization seat has a first through hole, the atomization cavity and the liquid inlet channel communicate through the first through hole, and at least part of the liquid guide is arranged at the first through hole.

[0011] In some embodiments, a second capillary channel is defined between the circumferential side wall of the liquid guide and the circumferential side wall of the first through hole.

[0012] In some embodiments, a gap between the circumferential side wall of the liquid guide and the circumferential side wall of the first through hole is 0.4-0.6 mm.

[0013] In some embodiments, at least part of the liquid inlet channel is located on a side of the liquid guide away from the atomization cavity, and a side wall of the liquid inlet channel is provided with a support column protruding, and the support column is supported on the side of the liquid guide away from the atomization cavity.

[0014] In some embodiments, the first direction is a height direction of the atomizer, and the liquid outlet of the liquid inlet channel is arranged at the bottom of the liquid guide.

[0015] In some embodiments, part of the side wall of the liquid inlet channel is penetrated to form a liquid outlet, and the liquid outlet communicates with the first through hole.

[0016] In some embodiments, the liquid inlet channel passes through the center line of the air outlet channel, and both ends of the liquid inlet channel penetrate the side wall of the atomization seat to form the liquid inlet.

[0017] In some embodiments, the atomization assembly comprises an ultrasonic atomization sheet, the liquid guide comprises a liquid inlet end and a liquid supply end, the liquid guide can guide the aerosol generating substrate in the liquid storage cavity to the liquid supply end through the liquid inlet end by capillary force, and supply the liquid to the ultrasonic atomization sheet, and the ultrasonic atomization sheet atomizes the aerosol generating substrate into aerosol during vibration; wherein the capillary force of the liquid supply end is greater than the capillary force of the liquid inlet end.

[0018] A second aspect of the embodiments of the present disclosure provides an aerosol generating device, comprising a power supply assembly and the atomizer of any of the embodiments of the present disclosure, and the power supply assembly is electrically connected with the atomizer.

[0019] The atomizer of the embodiments of the present disclosure sets the suction nozzle, in the cross section perpendicular to the first direction, by setting the size of the cross section of the suction nozzle along the second direction to be greater than the size along the third direction, the suction nozzle can limit the suction direction of the user, the two sides of the user's mouth corner are consistent with the length direction (second direction) of the suction nozzle, the length direction of the suction nozzle is the length direction (second direction) of the atomizing seat, by setting the line between the liquid inlet of the at least one liquid inlet channel and the center line of the gas outlet channel as L1, the included angle between L1 and the second direction is 60°-90°, that is, the liquid inlet of the gas outlet channel is close to the width direction (third direction) of the atomizing seat, in the case that the aerosol generating substrate is relatively small, the two sides of the user's mouth corner are consistent with the length direction (second direction) of the suction nozzle, the atomizer will produce a certain inclination angle, at this time, one of the liquid inlets of the liquid inlet channel can be downward, in this way, one of the liquid inlets of the liquid inlet channel can be located below the liquid level of the aerosol generating substrate, so that the aerosol generating substrate can be as much as possible to enter the liquid from the liquid inlet of the liquid inlet channel, improve the utilization rate of the aerosol generating substrate, in addition, the other liquid inlet of the liquid inlet channel can be upward, in this way, the other liquid inlet of the liquid inlet channel can be located above the liquid level of the aerosol generating substrate, which is beneficial to the ventilation, thereby further facilitating the aerosol generating substrate to enter the liquid from the liquid inlet located below the liquid level of the aerosol generating substrate. BRIEF DESCRIPTION OF DRAWINGS

[0020] FIG. 1 is a structural schematic diagram of an aerosol generating device in some embodiments of the present disclosure;

[0021] FIG. 2 is a cross-sectional view of FIG. 1;

[0022] FIG. 3 is a cross-sectional view of an atomizer in some embodiments of the present disclosure;

[0023] FIG. 4 is an enlarged view of A in FIG. 3;

[0024] FIG. 5 is a cross-sectional view of an atomizer in some embodiments of the present disclosure;

[0025] FIG. 6 is a partial structural schematic diagram of an atomizer in some embodiments of the present disclosure;

[0026] FIG. 7 is a cross-sectional view of a mounting member in some embodiments of the present disclosure;

[0027] FIG. 8 is a structural schematic diagram of an atomizing top seat in some embodiments of the present disclosure;

[0028] FIG. 9 is a structural schematic diagram of a second mounting member in some embodiments of the present disclosure;

[0029] FIG. 10 is a structural schematic diagram of an ultrasonic atomizing sheet in some embodiments of the present disclosure;

[0030] Fig. 11 is a sectional view of an atomizer in some embodiments of the present disclosure;

[0031] Fig. 12 is an enlarged view of B in Fig. 11;

[0032] Fig. 13 is an enlarged view of a sectional view of an atomizer in some embodiments of the present disclosure;

[0033] Fig. 14 is a sectional view of an atomizer in some embodiments of the present disclosure;

[0034] Fig. 15 is a structural schematic view of an aerosol-generating device in some embodiments of the present disclosure;

[0035] Fig. 16 is a structural schematic view of an aerosol-generating device in some embodiments of the present disclosure.

[0036] Legend 10, atomizing seat; 10a, atomizing cavity; 10b, ventilation passage; 10c, liquid inlet passage; 10d, first through hole; 10e, support column; 11, atomizing top seat; 11a, first capillary groove; 11b, buffer groove; 11c, third capillary groove; 11d, abutting protrusion; 11e, second through hole; 11m, liquid inlet; 11n, drainage groove; 12, atomizing bottom seat; 13, mounting piece; 13a, second capillary groove; 13b, ring groove; 13c, abutting protrusion; 131, first mounting piece; 132, second mounting piece; 20, atomizing assembly; 21, liquid guide piece; 21a, liquid inlet end; 21b, liquid supply end; 211, first liquid guide piece; 212, second liquid guide piece; 22, ultrasonic atomizing piece; 22a, micro hole; 22b, open hole region; 221, piezoelectric ceramic piece; 221a, avoidance through hole; 222, micro hole piece; 2221, body; 2222, protruding part; 2223, flat section; 2224, curved section; 30, shell assembly; 30a, air outlet passage; 30b, suction nozzle; 100, atomizer; 100a, liquid storage cavity; 100b, second capillary passage; 100c, air inlet passage; 200, power supply assembly; 1000, aerosol-generating device. DETAILED DESCRIPTION

[0037] It should be noted that the embodiments in the present disclosure and the technical features in the embodiments can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as an explanation of the purpose of the present disclosure, and should not be regarded as an improper limitation of the present disclosure.

[0038] In the description of the embodiments of the present disclosure, it should be noted that the terms "upper", "lower", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in FIG. 2. These orientation terms are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present disclosure. The present disclosure will be further described in detail below with reference to the drawings and specific embodiments.

[0039] As shown in FIG. 1, FIG. 15 and FIG. 16, the present disclosure provides an aerosol generating device 1000, which includes an atomizer 100 and a power supply assembly 200 according to any embodiment of the present disclosure.

[0040] The aerosol generating device 1000 is used to atomize an aerosol generating substrate to generate an aerosol for a user. The aerosol generating substrate includes, but is not limited to, a medicinal product, a material containing nicotine, or a material not containing nicotine, etc. In the embodiments of the present disclosure, the aerosol generating substrate may, for example, be a liquid material with a plant (e.g., tobacco, etc.) as a main raw material and with a corresponding aerosol former and aroma material added.

[0041] The power supply assembly 200 is electrically connected with the atomizer 100, and is mainly used to supply power to the atomizer 100 and control the opening or closing of the entire aerosol generating device 1000 and the like.

[0042] In some embodiments, referring to FIG. 2, the atomizer 100 and the power supply assembly can be mechanically and electrically connected together in an axial direction. Further, the atomizer 100 and the power supply assembly can be connected together in a detachable manner such as magnetic attraction connection, threaded connection, buckle connection, etc. The atomizer 100 and the power supply assembly can be replaced or upgraded separately, thereby reducing the replacement cost and saving the user's expenses. Of course, in other embodiments, the atomizer 100 and the power supply assembly can also be connected together in a non-detachable manner.

[0043] In addition, the atomizer 100 and / or the power supply assembly are not limited to a cylindrical shape, but can also be an elliptical cylindrical shape or a square column shape, etc.

[0044] It should be understood by those skilled in the art that the embodiments of the present disclosure do not specifically limit the type of the aerosol generating device 1000. For example, the aerosol generating device 1000 can be a medical atomization device, an air humidifier, or an electronic cigarette, etc. which needs to use the atomizer 100.

[0045] As shown in FIG. 2 to FIG. 4, the present disclosure provides an atomizer 100. The atomizer 100 includes a liquid storage cavity 100a and an atomization assembly 20.

[0046] The liquid storage cavity 100a is used to store the aerosol generating substrate.

[0047] Exemplarily, the atomization assembly 20 comprises an ultrasonic atomization piece 22 and a liquid guide 21. The liquid guide 21 comprises a liquid inlet end 21a and a liquid supply end 21b. The liquid guide 21 can guide the aerosol generating substrate in the liquid storage cavity 100a to the liquid supply end 21b through the liquid inlet end 21a by capillary force, and supply the liquid to the ultrasonic atomization piece 22. The ultrasonic atomization piece 22 atomizes the aerosol generating substrate into aerosol during vibration.

[0048] Of course, in other embodiments, the atomization assembly 20 can also not be atomized by ultrasonic atomization. For example, the atomization assembly 20 comprises a heating element. The liquid guide 21 can guide the aerosol generating substrate in the liquid storage cavity 100a to the liquid supply end 21b through the liquid inlet end 21a by capillary force, and supply the liquid to the heating element. The heating element heats and atomizes the aerosol generating substrate into aerosol.

[0049] Exemplarily, the atomizer 100 comprises a shell assembly 30, which is an external shell of the atomizer 100. The shell assembly 30 is internally formed with an air outlet channel 30a. Aerosol can be discharged from the air outlet of the air outlet channel 30a for use by a user.

[0050] The air outlet channel 30a can be located in the middle region of the shell assembly 30 (as shown in FIG. 1), can be located on the side of the middle region of the shell assembly 30 (as shown in FIG. 16), or can be located on the side of the shell assembly 30 (as shown in FIG. 15).

[0051] Here, the air outlet channel 30a extends in a first direction. Exemplarily, the first direction is the height direction of the atomizer 100. Of course, the first direction can also be a direction perpendicular to the height direction of the atomizer 100.

[0052] Exemplarily, referring to FIGS. 2 and 3, the atomizer 100 comprises an atomization seat 10. At least a part of the atomization seat 10 is arranged in the shell assembly 30.

[0053] Here, at least a part of the atomization seat 10 arranged in the shell assembly 30 can mean that part of the structure of the atomization seat 10 is arranged in the shell assembly 30, or that all the structures of the atomization seat 10 are arranged in the shell assembly 30.

[0054] Exemplarily, referring to FIG. 14, the shell assembly 30 is internally provided with a liquid storage cavity 100a.

[0055] Here, the shell assembly 30 can define the liquid storage cavity 100a, or the shell assembly 30 and the atomization seat 10 jointly define the liquid storage cavity 100a.

[0056] In the embodiments of the present disclosure, the top of the atomization seat 10 and the inner side wall of the shell assembly 30 define a liquid storage cavity 100a for storing the aerosol generating substrate, and the liquid storage cavity 100a is arranged around the air outlet channel 30a.

[0057] For example, referring to FIGS. 2-5, the atomization seat 10 is formed with an atomization cavity 10a and a liquid inlet channel 10c, the liquid inlet channel 10c communicating the liquid storage cavity 100a and the atomization cavity 10a, and the atomization cavity 10a communicating with the air outlet channel 30a.

[0058] For example, the atomization seat 10 is formed with an air inlet channel 100c, the air inlet channel 100c communicating the outside and the atomization cavity 10a.

[0059] The aerosol generating substrate in the liquid storage cavity 100a enters the atomization assembly 20 through the liquid inlet channel 10c for atomization, and the aerosol formed after atomization flows together with the air flowing in through the air inlet channel 100c, through the air outlet channel 30a, and is discharged to the outside through the air outlet for use by a user.

[0060] The atomization assembly 20 is used to absorb the aerosol generating substrate and atomize the aerosol generating substrate to form an aerosol. The atomization assembly 20 is arranged in the atomization seat 10, and the atomization assembly 20 includes an ultrasonic atomization sheet 22, the ultrasonic atomization sheet 22 being located between the atomization cavity 10a and the liquid outlet of the liquid inlet channel 10c and sealing the liquid outlet of the liquid inlet channel 10c.

[0061] Here, in some cases, the atomization assembly 20 can also be referred to as an atomization core.

[0062] For example, referring to FIGS. 2-5, the liquid storage cavity 100a is located on the top side of the atomization seat 10, and the ultrasonic atomization sheet 22 is arranged perpendicular to the height direction of the atomizer 100, that is, the thickness direction of the ultrasonic atomization sheet 22 is parallel to the height direction of the atomizer 100.

[0063] For example, referring to FIG. 2, the height direction of the atomizer 100 refers to the arrangement direction of the power supply assembly 200 and the atomizer 100.

[0064] For example, the atomization cavity 10a is located above the ultrasonic atomization sheet 22, that is, the ultrasonic atomization sheet 22 atomizes upward.

[0065] For example, the liquid outlet of the liquid inlet channel 10c is located on the bottom side of the liquid guide 21, and of course, the liquid outlet of the liquid inlet channel 10c can also be located on the side and / or top side of the liquid guide 21.

[0066] The atomization cavity 10a communicates with the air outlet channel 30a, and the air outlet channel 30a is a straight channel extending along the height direction of the atomizer 100. The straight air outlet channel 30a is simple in structure and easy to process, and has small air flow resistance.

[0067] Of course, referring to FIG. 15, the air outlet passage 30a can also be a straight passage extending in a direction perpendicular to the height direction of the atomizer 100.

[0068] When the atomizer 100 is in operation, the aerosol generating substrate in the liquid storage cavity 100a is communicated with the liquid guide 21 through the liquid inlet passage 10c, the liquid guide 21 supplies the liquid to the atomization assembly 20 in a top-down manner, the atomization assembly 20 atomizes the aerosol generating substrate, the aerosol formed after atomization is discharged from the atomization cavity 10a to the air outlet passage 30a together with the air entering through the air inlet passage 100c, and finally discharged from the air outlet of the air outlet passage 30a for the user to use.

[0069] This upward atomization manner can reduce the length of the flow path of the aerosol formed after atomization, so that the aerosol can reach the air outlet of the air outlet passage 30a more quickly for the user to use. Reducing the length of the flow path can also reduce the possibility of the aerosol colliding with the inner wall due to the long path and forming aerosol condensate, prevent the aroma and concentration from being reduced due to the loss of the aerosol, and at the same time, avoid that the large-particle aerosol condensate blocks the air outlet passage 30a or leaks to the power assembly 200 to cause damage to the device.

[0070] Of course, in other embodiments, the ultrasonic atomization sheet 22 can also be arranged parallel to the height direction of the atomizer 100.

[0071] Here, considering the assembly tolerance and the manufacturing error of the parts, the parallel and / or perpendicular described here can be completely parallel and / or completely perpendicular, or can be approximately parallel and / or approximately perpendicular.

[0072] The liquid guide 21 can guide the aerosol generating substrate to the liquid supply end 21b through the liquid inlet end 21a by capillary force, that is, the liquid guide 21 has a capillary passage inside, the liquid guide 21 can generate capillary phenomenon on the liquid in the capillary passage, and can supply liquid to the ultrasonic atomization sheet 22 in real time, which is conducive to improving the liquid supply rate and realizing continuous liquid supply.

[0073] Capillarity refers to a phenomenon occurring in a capillary passage with a small enough linearity to compare with the curvature radius of the liquid meniscus. The entire liquid surface in the capillary passage will be curved, the interaction between liquid and solid molecules can be extended to the entire liquid, and the liquid surface curvature will generate a certain capillary force. In this way, the liquid guide 21 can continuously supply the aerosol generating substrate to the ultrasonic atomization sheet 22 through the capillary passage.

[0074] Here, the capillary channel can generate capillary force on the internal aerosol generating substrate, that is, the capillary channel can adsorb and lock part of the aerosol generating substrate, so that the situation of not timely supplying liquid due to flat or upside-down placement during use can be improved, thereby improving the situation of empty vibration of the ultrasonic atomization piece 22, and the service life of the ultrasonic atomization piece 22 is improved.

[0075] In addition, the capillary channel can make the liquid supply more uniform, which is beneficial to improve the situation of not smoking caused by excessive liquid supply during suction, that is, the situation of not smoking caused by the excess liquid column above the ultrasonic atomization piece 22.

[0076] Here, by setting the capillary force of the liquid supply end 21b to be greater than the capillary force of the liquid inlet end 21a, the aerosol generating substrate can be guided from the liquid inlet end 21a to the liquid supply end 21b, so as to further improve the liquid supply efficiency and liquid locking capacity of the liquid guide 21.

[0077] By forming an aerosol generating substrate oil film between the liquid guide 21 and the ultrasonic atomization piece 22, the oleophobicity of the surface of the ultrasonic atomization piece 22 can be destroyed, so that the aerosol generating substrate oil film can be in real-time contact with the ultrasonic atomization piece 22, thereby improving the atomization efficiency of the atomization assembly 20.

[0078] In addition, since the inside of the liquid guide 21 is a capillary through hole, during the vibration of the ultrasonic atomization piece 22, the situation of gas entering the liquid guide 21 through the ultrasonic atomization piece 22 to generate bubbles can be improved, which is further beneficial to continuously supply liquid to the ultrasonic atomization piece 22, and improve the situation of small smoke amount or empty vibration caused by insufficient liquid supply.

[0079] The capillary through hole inside the liquid guide 21 can store the amount of aerosol generating substrate required for 2-5 puffs, which can improve the situation of not timely supplying liquid due to flat or upside-down placement during use.

[0080] By forming a capillary through hole inside the liquid guide 21, the uniformity of the liquid supply of the liquid guide 21 can also be adjusted, and the situation of not smoking caused by the excess liquid column or liquid drops on the surface of the ultrasonic atomization piece 22 due to excessive liquid supply can be improved.

[0081] The atomization assembly 20 of the atomizer 100 in the embodiments of the present disclosure includes the ultrasonic atomization piece 22 and the liquid guide 21. On the one hand, the aerosol generating substrate can flow to the liquid supply end 21b from the liquid inlet end 21a under the action of capillary force, and supply liquid to the ultrasonic atomization piece 22. In this way, the liquid guide 21 can continuously deliver the aerosol generating substrate to the ultrasonic atomization piece 22 under the action of capillary force, which is beneficial to improve the liquid supply efficiency of the liquid guide 21, thereby improving the atomization efficiency of the atomizer 100. On the other hand, the situation that gas enters the liquid guide 21 through the ultrasonic atomization piece 22 to generate bubbles can be improved, which is further beneficial to continuously supply liquid to the ultrasonic atomization piece 22 by the liquid guide 21, and improve the situation that the smoke amount is small or the air vibration is caused by insufficient liquid supply.

[0082] In some embodiments, referring to FIGS. 1-5, the shell assembly 30 includes a mouthpiece 30b, the interior of the mouthpiece 30b has an air outlet channel 30a extending in a first direction, and in a cross section perpendicular to the first direction, the cross section of the mouthpiece 30b has a dimension along a second direction greater than a dimension along a third direction. In a projection plane perpendicular to the first direction, a line between the liquid inlet 11m of the at least one liquid inlet channel 10c and the center of the air outlet channel 30a is L1, and the angle between L1 and the second direction is 60°-90°. The first direction, the second direction, and the third direction intersect.

[0083] Exemplarily, the shell assembly 30 includes a shell, and the shell and the mouthpiece 30b can be an integrated structure or a split structure.

[0084] Referring to FIG. 1, in a cross section perpendicular to the first direction, the cross section of the mouthpiece 30b has a dimension along the second direction greater than a dimension along the third direction, that is, the mouthpiece 30b is substantially flat.

[0085] Exemplarily, the aerosol generating device 1000 can also be substantially flat.

[0086] The second direction is, for example, the length direction of the aerosol generating device 1000, and the third direction is, for example, the width direction of the aerosol generating device 1000.

[0087] The shape of the cross section of the substantially flat mouthpiece 30b can be various, and exemplarily, the cross section of the mouthpiece 30b is rectangular, elliptical, trapezoidal, or track-shaped.

[0088] The track-shaped shape refers to a shape similar to a track and field track, which is formed by alternately connecting two semicircles or arcs of the same radius and two parallel straight edges.

[0089] In the embodiment in which the first direction is the height direction of the aerosol generating device 1000, here, the second direction, the third direction, and the height direction of the aerosol generating device 1000 intersecting means that the second direction, the third direction, and the height direction of the aerosol generating device 1000 are not parallel, and exemplarily, the second direction, the third direction, and the height direction of the aerosol generating device 1000 are perpendicular to each other.

[0090] The line between the liquid inlet 11m of the liquid inlet channel 10c and the center of the atomizer 100 is L1, and the angle between L1 and the second direction is 60°-90°, that is, the liquid inlet channel 10c is arranged in the width direction of the atomizing seat 10.

[0091] The angle between L1 and the second direction can be a point value of any one of 60°, 65°, 70°, 75°, 80°, 85°, 90° or a point value between any two of them.

[0092] Exemplarily, the cross section of the suction nozzle 30b of the shell assembly 30 is flat, the two liquid inlets 11m of the liquid inlet channel 10c are arranged at both ends of the width direction (short axis) of the atomizing seat 10, and the short axis direction of the shell assembly 30 is the width direction of the atomizing seat 10.

[0093] The atomizer 100 of the embodiment of the present disclosure sets the suction nozzle 30b, in the cross section perpendicular to the first direction, by setting the size of the cross section of the suction nozzle 30b along the second direction to be greater than the size along the third direction, the suction nozzle 30b can limit the suction direction of the user, the two sides of the user's mouth corner are consistent with the length direction (second direction) of the suction nozzle 30b, and the length direction of the suction nozzle 30b is the length direction (second direction) of the atomizing seat 10, by setting the line between the liquid inlet 11m of at least one liquid inlet channel 10c and the center line of the gas outlet channel 30a as L1, the angle between L1 and the second direction is 60°-90°, that is, the liquid inlet 11m of the gas outlet channel 30a is arranged close to the width direction (third direction) of the atomizing seat 10, in the case that the aerosol generating substrate is relatively small, the two sides of the user's mouth corner are consistent with the length direction (second direction) of the suction nozzle 30b, the atomizer 100 will produce a certain inclination angle, at this time, one of the liquid inlets 11m of the liquid inlet channel 10c can be made to face downward, in this way, one of the liquid inlets 11m of the liquid inlet channel 10c can be located below the liquid level of the aerosol generating substrate, so that the aerosol generating substrate can be as much as possible to enter the liquid from the liquid inlet 11m of the liquid inlet channel 10c, thereby improving the utilization rate of the aerosol generating substrate, in addition, the other liquid inlet 11m of the liquid inlet channel 10c can also be made to face upward, in this way, the other liquid inlet 11m of the liquid inlet channel 10c can be located above the liquid level of the aerosol generating substrate, which is conducive to ventilation, thereby further facilitating the aerosol generating substrate to enter the liquid from the liquid inlet 11m located below the liquid level of the aerosol generating substrate.

[0094] Exemplarily, the atomizing seat 10 is further provided with a plurality of liquid inlet channels 10c, and an angle between a line between the liquid inlet 11m of each liquid inlet channel 10c and the center of the atomizer 100 and the second direction is 60°-90°.

[0095] In some embodiments, the atomizing seat 10 is formed with two liquid inlet channels 10c, and the two liquid inlet channels 10c are perpendicular to each other.

[0096] Exemplarily, the capillary force of the liquid supply end 21b is greater than the capillary force of the liquid inlet end 21a.

[0097] Here, by setting the capillary force of the liquid supply end 21b to be greater than the capillary force of the liquid inlet end 21a, the liquid supply efficiency of the liquid guide 21 is further improved, and the liquid guide 21 can also adsorb and lock part of the aerosol generating substrate, that is, part of the aerosol generating substrate can be buffered in the liquid guide 21, which can improve the situation that the liquid supply is not timely due to flat or upside-down placement during use, thereby improving the situation of empty vibration of the ultrasonic atomizing piece 22, and is beneficial to improving the service life of the ultrasonic atomizing piece 22. Exemplarily, referring to FIGS. 1 and 2, the atomizer 100 includes a shell assembly 30, and the shell assembly 30 is formed with an air outlet channel 30a.

[0098] Here, there are various ways to set the capillary force of the liquid supply end 21b to be greater than the capillary force of the liquid inlet end 21a.

[0099] In some embodiments, referring to FIGS. 3-8, the liquid guide 21 has a first capillary channel inside, and the aerosol generating substrate can flow from the liquid inlet end 21a to the liquid supply end 21b under the action of the capillary force of the first capillary channel. The pore size of the first capillary channel decreases in the direction from the liquid inlet end 21a to the liquid supply end 21b.

[0100] The pore size of the first capillary channel decreases, which can increase the capillary force of the first capillary channel, so that the liquid guiding rate and the liquid locking capacity of the liquid guide 21 can be increased in the direction from the liquid inlet end 21a to the liquid supply end 21b.

[0101] Here, the pore size of the first capillary channel inside the liquid guide 21 can be changed by changing the external shape of the liquid guide 21, that is, the cross-sectional area of the liquid guide 21 decreases in the direction from the liquid inlet end 21a to the liquid supply end 21b; of course, the cross-sectional area of the liquid guide 21 in the direction from the liquid inlet end 21a to the liquid supply end 21b can also be the same. Here, the cross-sectional area of the liquid guide 21 refers to the cross-sectional area of the liquid guide 21 taken by a cross section perpendicular to the direction from the liquid inlet end 21a to the liquid supply end 21b.

[0102] Here, the first capillary channel can be an ordered hole or an unordered hole.

[0103] Exemplarily, the first capillary channel can be a straight hole, i.e., the first capillary channel penetrates from one surface of the liquid guide 21 to the opposite surface. For example, the two ends of the first capillary channel can penetrate the liquid inlet end 21a and the liquid supply end 21b, respectively.

[0104] In other embodiments, the first capillary channel can also be a blind hole, i.e., at least one end of the first capillary channel does not penetrate the surface of the liquid guide 21.

[0105] In some embodiments, referring to FIGS. 4, 12 and 13, the pore size of the first capillary channel gradually decreases in the direction from the liquid inlet end 21a to the liquid supply end 21b.

[0106] In this way, the capillary force of the first capillary channel can gradually increase, so that the liquid guiding rate and the liquid locking capacity of the liquid guide 21 can gradually increase in the direction from the liquid inlet end 21a to the liquid supply end 21b, which is beneficial to improve the stability of the liquid supply of the liquid guide 21.

[0107] In other embodiments, the pore size of the first capillary channel decreases in a stepped manner.

[0108] In this way, the capillary force of the first capillary channel can increase in a stepped manner, so that the liquid guiding rate and the liquid locking capacity of the liquid guide 21 can increase in a stepped manner in the direction from the liquid inlet end 21a to the liquid supply end 21b, which is beneficial to make the liquid guide 21 continuously supply liquid.

[0109] The stepped decrease means that the trend of the decrease of the pore size of the first capillary channel is not continuous, but in a stepped manner.

[0110] Exemplarily, the first capillary channel includes a first capillary segment and a second capillary segment that are in communication with each other, the pore size of the first capillary segment is greater than that of the second capillary segment, and a step surface is formed therebetween. Here, the pore size of the first capillary segment can be the same, or the pore size of the first capillary segment can gradually decrease or decrease in a stepped manner towards the second capillary segment; similarly, the pore size of the second capillary segment can be the same, or the pore size of the second capillary segment can gradually decrease or decrease in a stepped manner away from the first capillary segment.

[0111] Here, the positions of the liquid inlet end 21a and the liquid supply end 21b on the liquid guide 21 can be set according to the specific structure of the atomizer 100, i.e., the liquid inlet direction and the atomization direction.

[0112] In some embodiments, referring to FIGS. 3-8, the liquid inlet end 21a and the liquid supply end 21b are disposed at two opposite ends of the liquid guide 21 along the first direction.

[0113] That is, the liquid inlet end 21a and the liquid supply end 21b can be disposed opposite to each other, i.e., the aerosol generating substrate flows along the first direction, and thus, it is beneficial to improve the liquid supply rate of the liquid guide 21.

[0114] Here, the first direction is not limited herein, and exemplary, the first direction can be a height direction of the atomizer 100, and can also be a direction perpendicular to the height direction of the atomizer 100. Referring to FIGS. 15 and 16, the first direction is a direction perpendicular to the height direction of the atomizer 100, at this time, the ultrasonic atomization sheet 22 is disposed at one side of the liquid guide 21 along the first direction, and the ultrasonic atomization sheet 22 is arranged parallel to the height direction of the atomizer 100, and the liquid inlet passage 10c is disposed at the side of the liquid guide 21 away from the ultrasonic atomization sheet 22 along the first direction. The gas outlet passage 30a can be located on the side of the housing assembly 30, can be located on one side of the atomization cavity 10a along the first direction, and can also be located above the atomization cavity 10a.

[0115] In the embodiments of the present disclosure, the first direction is taken as the height direction of the atomizer 100 for description.

[0116] Of course, in other embodiments, the liquid inlet end 21a and the liquid supply end 21b can also not be disposed on two opposite faces of the liquid guide 21, for example, the liquid inlet end 21a and the liquid supply end 21b are disposed on two adjacent faces of the liquid guide 21.

[0117] In some embodiments, referring to FIG. 10, the ultrasonic atomization sheet 22 includes an open area 22b formed with micro-holes 22a.

[0118] By forming the micro-holes 22a on the ultrasonic atomization sheet 22, the ultrasonic atomization sheet 22 can convert electrical energy into vibration energy, and the ultrasonic atomization sheet 22 vibrates to generate ultrasonic waves to atomize the aerosol generating substrate, and at the same time, the aerosol is transported to the atomization cavity 10a through the micro-holes 22a in the vibration process, thereby generating the aerosol for the user to use.

[0119] Here, the open area 22b can be provided to control the atomization area of the ultrasonic atomization sheet 22, which is beneficial to improve the atomization efficiency and utilization of the aerosol generating substrate.

[0120] Exemplarily, the ultrasonic atomization sheet 22 further includes a non-hole area without the micro-holes 22a.

[0121] In some embodiments, referring to FIGS. 3-5 and 10, the cross-sectional area of the liquid supply end 21b in a cross-section perpendicular to the first direction is greater than or equal to the area of the open area 22b.

[0122] By setting the cross-sectional area of the liquid supply end 21b of the liquid guide 21 in the cross section perpendicular to the first direction to be greater than the area of the opening region 22b, the opening region 22b of the ultrasonic atomization sheet 22 can correspond to the liquid supply end 21b of the liquid guide 21.

[0123] By setting the cross-sectional area of the liquid supply end 21b of the liquid guide 21 in the cross section perpendicular to the first direction to be greater than or equal to the area of the opening region 22b, the liquid supply efficiency of the liquid guide 21 and the atomization efficiency of the atomization assembly 20 can be improved.

[0124] It should be noted that the specific type of the liquid guide 21 is not limited herein.

[0125] Exemplarily, the capillary channels inside the liquid guide 21 can be ordered capillary channels or unordered capillary channels.

[0126] Exemplarily, the liquid guide 21 can be a hard material, a flexible material, or a combination of a hard material and a flexible material.

[0127] Exemplarily, the liquid guide 21 includes, but is not limited to, a porous fiber structure, a porous ceramic, a porous plastic, or a porous glass, etc.

[0128] In some embodiments, the liquid guide 21 includes liquid guide cotton.

[0129] By setting the liquid guide 21 to include liquid guide cotton, the liquid supply efficiency of the liquid guide 21 and the atomization efficiency of the ultrasonic atomization sheet 22 can be improved, and the damage to the ultrasonic atomization sheet 22 can be reduced.

[0130] The liquid guide cotton has a certain flexibility, and the ultrasonic atomization sheet 22 can abut against the liquid guide cotton during vibration, so that the liquid guide cotton is slightly deformed, and the ultrasonic atomization sheet 22 can be fully in contact with the liquid guide cotton. Thus, when the atomizer 100 is in a working state, the atomization efficiency of the ultrasonic atomization sheet 22 can be improved, and the soft liquid guide cotton can buffer the ultrasonic atomization sheet 22, so that the damage to the ultrasonic atomization sheet 22 caused by empty vibration can be reduced even without the aerosol generating substrate.

[0131] The liquid guide cotton can include a vertical cotton structure, and only a plurality of vertical apertures uniformly arranged or non-uniformly arranged along the axial direction are arranged in the vertical cotton structure, and the vertical apertures can constitute capillary channels.

[0132] The liquid guide cotton can also include a horizontal cotton structure, and only a plurality of horizontal apertures uniformly arranged or non-uniformly arranged along a plane perpendicular to the axial direction are arranged in the horizontal cotton structure, and the horizontal apertures can constitute capillary channels.

[0133] The liquid guide cotton can also include both the vertical cotton structure and the horizontal cotton structure.

[0134] In some embodiments, referring to FIGS. 3-5, the liquid guide 21 is in a columnar shape, and is exemplarily a liquid guide fiber rod.

[0135] In some other embodiments, the liquid guide 21 includes a plurality of fiber sheets, and each of the fiber sheets is stacked along the height direction of the atomizer 100.

[0136] Exemplarily, the material of the liquid guide 21 includes at least one of polyamide (PA), polyethylene terephthalate (PET), acetate fiber, and plant fiber. That is, the material of the liquid guide 21 can be any one or a plurality of the above-mentioned materials.

[0137] In some embodiments, referring to FIGS. 3-5, the liquid inlet end 21a and the liquid supply end 21b are arranged at two ends of the liquid guide 21 along the first direction, and the size of the liquid guide 21 along the first direction is 1-6 mm.

[0138] The size of the liquid guide 21 along the first direction can be any one of 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 5.8 mm, 6 mm, or a point value between any two of them.

[0139] It can be understood that the size of the liquid guide 21 along the first direction is the size of the internal capillary channel between the liquid inlet end 21a and the liquid supply end 21b along the first direction, and the size of the internal capillary channel between the liquid inlet end 21a and the liquid supply end 21b along the first direction that is too large or too small will result in too little or too much liquid supply, which is not conducive to atomization. That is, the liquid supply speed of the liquid guide 21 can be controlled by the size of the liquid guide 21 along the first direction.

[0140] In this embodiment, by setting the size of the liquid guide 21 along the first direction to 1-6 mm, the size in this range is moderate, so that the liquid supply speed of the liquid guide 21 is moderate, which is conducive to improving the atomization efficiency.

[0141] In some embodiments, referring to FIGS. 3-5, the size of the liquid guide 21 along the first direction is 2-3 mm.

[0142] The size of the liquid guide 21 along the first direction can be any one of 2 mm, 2.2 mm, 2.3 mm, 2.5 mm, 2.6 mm, 2.8 mm, 3 mm, or a point value between any two of them.

[0143] In this embodiment, the size of the liquid guide 21 in the first direction is set to 2mm-3mm, and the size in this range is moderate, so that the liquid supply speed of the liquid guide 21 is moderate, which is conducive to further improving the atomization efficiency.

[0144] It can be understood that the number, pore size, and other parameters of the first capillary channel of the liquid guide cotton will affect the capillary force of the first capillary channel, that is, the liquid supply speed of the liquid guide 21.

[0145] In some embodiments, the liquid guide 21 includes liquid guide cotton, and the grammage of the liquid guide cotton is 0.05g / cm3-0.4g / cm3.

[0146] The grammage of the liquid guide 21 can be a point value of any one of 0.05g / cm3, 0.1g / cm3, 0.15g / cm3, 0.2g / cm3, 0.25g / cm3, 0.3g / cm3, 0.35g / cm3, 0.38g / cm3, 0.4g / cm3 or a point value between any two of them.

[0147] It can be understood that if the grammage of the liquid guide cotton is too small, the liquid supply speed will be small, and if the grammage of the liquid guide cotton is too large, the amount of aerosol generating substrate stored in the liquid guide 21 will be small. That is, the liquid supply speed and the liquid supply amount of the liquid guide cotton can be controlled by controlling the grammage of the liquid guide cotton.

[0148] In addition, the grammage of the liquid guide cotton also affects the distribution degree of the capillary channels inside the liquid guide cotton, that is, the number, pore size, and other parameters of the capillary channels inside the liquid guide cotton, thereby affecting the capillary force of the capillary channels, and further affecting the liquid supply speed of the liquid guide cotton.

[0149] In this embodiment, by setting the grammage of the liquid guide cotton to 0.05g / cm3-0.4g / cm3, the liquid guide cotton can have a large liquid supply speed and a large liquid supply amount, which is conducive to improving the liquid supply efficiency of the liquid guide cotton.

[0150] In some embodiments, the grammage of the liquid guide cotton is 0.1g / cm3-0.2g / cm3.

[0151] The grammage of the liquid guide cotton can be a point value of any one of 0.1g / cm3, 0.11g / cm3, 0.12g / cm3, 0.13g / cm3, 0.14g / cm3, 0.15g / cm3, 0.16g / cm3, 0.17g / cm3, 0.18g / cm3, 0.19g / cm3, 0.2g / cm3 or a point value between any two of them.

[0152] In this embodiment, by setting the gram weight of the liquid guiding cotton to 0.1 g / cm3-0.2 g / cm3, the liquid guiding cotton can have a large liquid supply speed and liquid supply amount, which is conducive to further improving the liquid supply efficiency of the liquid guiding cotton.

[0153] In some embodiments, the side wall of the first capillary channel is rough. This is conducive to improving the capillary force generated by the first capillary channel on the aerosol generating substrate and locking the aerosol generating substrate in the liquid guiding piece 21.

[0154] For example, in the embodiment in which the liquid guiding piece 21 is liquid guiding cotton, the plurality of uniformly arranged or non-uniformly arranged pores in the liquid guiding cotton can constitute the first capillary channel, and the side wall of the first capillary channel of the liquid guiding cotton is a rough surface.

[0155] Of course, in the embodiment in which the liquid guiding piece 21 has other structures, the side wall of the first capillary channel of the liquid guiding piece 21 can be formed into a rough surface through processing.

[0156] In this embodiment, by setting the side wall of the first capillary channel to be rough, the capillary force generated by the first capillary channel on the aerosol generating substrate is improved, and the aerosol generating substrate is locked in the liquid guiding piece 21. In this way, the situation that the liquid supply is not timely during use due to flat or upside-down placement can be improved, the situation of the ultrasonic atomization piece 22 vibrating empty can be improved, and the service life of the ultrasonic atomization piece 22 can be improved.

[0157] In some embodiments, at least part of the side wall of the first capillary channel is a curved segment on the cross section passing through the center line of the first capillary channel.

[0158] By setting at least part of the side wall of the first capillary channel to be a curved segment, the capillary force generated by the first capillary channel on the aerosol generating substrate is improved, and the aerosol generating substrate is locked in the liquid guiding piece 21.

[0159] At least part of the side wall of the first capillary channel being a curved segment means that part of the side wall of the first capillary channel can be a curved segment, or all of the side wall of the first capillary channel can be a curved segment.

[0160] In this embodiment, at least part of the side wall of the first capillary channel is a curved segment on the cross section passing through the center line of the first capillary channel, which is conducive to improving the capillary force generated by the first capillary channel on the aerosol generating substrate and locking the aerosol generating substrate in the liquid guiding piece 21. In this way, the situation that the liquid supply is not timely during use due to flat or upside-down placement can be improved, the situation of the ultrasonic atomization piece 22 vibrating empty can be improved, and the service life of the ultrasonic atomization piece 22 can be improved.

[0161] In some embodiments, referring to FIGS. 3-5, the atomizer 100 includes an atomizing seat 10 formed with an atomizing cavity 10a and a liquid inlet channel 10c, the interior of the atomizing seat 10 has a first through hole 10d, the atomizing cavity 10a and the liquid inlet channel 10c communicate through the first through hole 10d, at least part of the liquid guide 21 is arranged at the first through hole 10d, and a second capillary channel 100b is defined between the circumferential side wall of the liquid guide 21 and the circumferential side wall of the first through hole 10d.

[0162] The interior of the atomizing seat 10 has a first through hole 10d means that the atomizing seat 10 can be formed with the first through hole 10d, the atomizing assembly 20 can be formed with the first through hole 10d, or the atomizing seat 10 and the atomizing assembly 20 can jointly define the first through hole 10d.

[0163] Here, the second capillary channel 100b refers to a channel capable of generating a capillary phenomenon on the liquid located in the second capillary channel 100b.

[0164] Here, the second capillary channel 100b surrounds the circumferential side of the liquid guide 21.

[0165] Here, the second capillary channel 100b can generate a capillary force on the internal aerosol generating substrate, so that the second capillary channel 100b can absorb and lock part of the aerosol generating substrate, can improve the situation that the liquid supply is not timely during use due to flat or upside-down placement, thereby improving the situation that the ultrasonic atomizing sheet 22 is empty, and is beneficial to improve the service life of the ultrasonic atomizing sheet 22. At the same time, the second capillary channel 100b also supplies liquid to the liquid guide 21, so that the circumferential side of the liquid guide 21 absorbs the aerosol generating substrate.

[0166] In some embodiments, referring to FIGS. 3-5, the gap between the circumferential side wall of the liquid guide 21 and the circumferential side wall of the first through hole 10d is 0.4-0.6 mm.

[0167] The gap between the circumferential side wall of the liquid guide 21 and the circumferential side wall of the first through hole 10d can be 0.4 mm, 0.43 mm, 0.45 mm, 0.48 mm, 0.5 mm, 0.53 mm, 0.55 mm, 0.58 mm, 0.6 mm, or any point value between any two of them.

[0168] That is, the size of the second capillary channel 100b in the radial direction of the liquid guide 21 is 0.4-0.6 mm.

[0169] In this embodiment, by setting the gap between the circumferential side wall of the liquid guide 21 and the circumferential side wall of the first through hole 10d to 0.4mm-0.6mm, the second capillary channel 100b can continuously transport the aerosol generating substrate to the ultrasonic atomization sheet 22 under the action of capillary force, which is beneficial to improve the liquid supply efficiency and thus improve the atomization efficiency, and the assembly of the liquid guide 21 is facilitated.

[0170] By providing the third capillary channel at at least one end of the liquid guide 21 along the first direction, the liquid supply rate and efficiency of the liquid guide 21 are improved.

[0171] In some embodiments, please refer to FIGS. 3-5, the liquid inlet end 21a and the liquid supply end 21b are arranged at both ends of the liquid guide 21 along the first direction, the liquid guide 21 has the first capillary channel and the third capillary channel, the third capillary channel is arranged at at least one end of the first capillary channel along the first direction, the third capillary channel extends in the first plane and communicates with at least part of the first capillary channel, and the first plane is perpendicular to the first direction.

[0172] At least one end of the liquid guide 21 along the first direction has a plurality of uniformly arranged or non-uniformly arranged transverse pores along a plane perpendicular to the axial direction, and the transverse pores can constitute the third capillary channel.

[0173] Here, the extension direction of the third capillary channel refers to the flow direction of the aerosol generating substrate in the third capillary channel, and the third capillary channel extends in the first plane, that is, the aerosol generating substrate can flow transversely in the first plane.

[0174] The third capillary channel arranged at at least one end of the first capillary channel along the first direction means that the third capillary channel can be arranged at one end of the liquid guide 21 along the first direction, or the third capillary channel can be arranged at both ends of the liquid guide 21 along the first direction.

[0175] The third capillary channel extends in the first plane, and the first plane is perpendicular to the first direction. For example, the first direction is vertical, and the third capillary channel is a transverse capillary channel.

[0176] Here, in the embodiment in which the liquid guide 21 is made of a hard material, the first capillary channel extending along the first direction can be formed inside the liquid guide 21, and a plurality of uniformly arranged or non-uniformly arranged transverse pores can be formed at the end of the liquid guide 21 along the first direction, and the transverse pores can communicate with at least part of the first capillary channel. Here, the transverse pores formed at the end of the liquid guide 21 constitute the third capillary channel.

[0177] In the embodiment in which the liquid guide 21 is made of flexible material, the liquid guide 21 includes vertical cotton and horizontal cotton, the vertical cotton is provided with the horizontal cotton at at least one end in the first direction, the vertical cotton has only the first capillary channels extending in the first direction inside, and the horizontal cotton has only the third capillary channels inside, which can communicate with at least part of the first capillary channels.

[0178] Exemplarily, the capillary force of the third capillary channels is greater than that of the first capillary channels.

[0179] In this embodiment, by providing the liquid guide 21 with the third capillary channels at at least one end in the first direction, so that the third capillary channels communicate with the plurality of first capillary channels, and the capillary force of the third capillary channels is greater than that of the first capillary channels, the aerosol generating substrate in the first capillary channels can flow to the third capillary channels, so that the aerosol generating substrate flows in the transverse direction of the liquid guide 21, thus, it is beneficial to improve the liquid supply rate and efficiency of the liquid guide 21, and further improve the atomization efficiency.

[0180] In other embodiments, the aerosol generating substrate in the liquid inlet channel 10c can first enter the third capillary channels, then enter the first capillary channels from the third capillary channels, and supply liquid to the ultrasonic atomization piece 22 through the first capillary channels.

[0181] In some embodiments, referring to FIGS. 3-5, the liquid guide 21 includes a first liquid guide 211 and a second liquid guide 212, the end of the second liquid guide 212 away from the first liquid guide 211 is the liquid supply end 21b, and the end of the first liquid guide 211 away from the second liquid guide 212 is the liquid inlet end 21a. The first liquid guide 211 has the first capillary channels, and the second liquid guide 212 is provided with the fourth capillary channels.

[0182] Exemplarily, the capillary force of the fourth capillary channels is greater than that of the first capillary channels.

[0183] Here, the end of the second liquid guide 212 away from the first liquid guide 211 is the liquid supply end 21b, that is, the second liquid guide 212 is located on the side of the first liquid guide 211 close to the air outlet channel 30a, that is, the aerosol generating substrate in the liquid inlet channel 10c first enters the first liquid guide 211, then enters the second liquid guide 212 from the first liquid guide 211, and supplies liquid to the ultrasonic atomization piece 22 through the second liquid guide 212.

[0184] In some embodiments, the first liquid guide 211 and the second liquid guide 212 can be an integrated structure, thus, it is beneficial to reduce parts and improve assembly efficiency.

[0185] In some embodiments, the first liquid guide 211 and the second liquid guide 212 can be in a split structure. In this way, the liquid guide 21 can have a suitable liquid guiding rate by designing the thickness, cross-sectional area, capillary channel, and other parameters of the first liquid guide 211 and the second liquid guide 212.

[0186] In the embodiments in which the first liquid guide 211 and the second liquid guide 212 are in a split structure, the first liquid guide 211 and the second liquid guide 212 can be in direct contact or can be spaced apart to form an oil film between the first liquid guide 211 and the second liquid guide 212, thereby guiding the aerosol generating substrate from the first liquid guide 211 to the second liquid guide 212.

[0187] The capillary force of the fourth capillary channel is greater than that of the first capillary channel, that is, the pore diameter of the fourth capillary channel is smaller than that of the first capillary channel. In this way, the fourth capillary channel has a greater liquid supply speed, and the first capillary channel can store more aerosol generating substrate.

[0188] In this embodiment, by providing the liquid guide 21 to include the first liquid guide 211 and the second liquid guide 212 and setting the capillary force of the fourth capillary channel to be greater than that of the first capillary channel, the first capillary channel can provide sufficient liquid supply, and the fourth capillary channel can provide sufficient liquid supply speed. That is, by cooperation of the first liquid guide 211 and the second liquid guide 212, the liquid supply efficiency of the liquid guide 21 can be improved.

[0189] Here, the extension direction of the fourth capillary channel is not limited.

[0190] In some embodiments, referring to FIGS. 3 to 5, the liquid inlet end 21a and the liquid supply end 21b are provided at both ends of the liquid guide 21 along the first direction, and at least part of the fourth capillary channel extends in the first plane, which is perpendicular to the first direction.

[0191] The liquid inlet end 21a and the liquid supply end 21b are provided at both ends of the liquid guide 21 along the first direction, that is, the first liquid guide 211 and the second liquid guide 212 are stacked along the first direction.

[0192] Here, at least part of the fourth capillary channel extends in the first plane, and each fourth capillary channel communicates with at least part of the first capillary channel. That is, the aerosol generating substrate in different first capillary channels can flow into the same fourth capillary channel to realize the lateral flow of the aerosol generating substrate along the liquid guide 21.

[0193] In this embodiment, by extending at least part of the fourth capillary channel in the first plane, the aerosol generating substrate can flow along the transverse direction of the liquid guide 21, thus, the liquid supply efficiency of the liquid guide 21 can be improved, and the atomization efficiency is further improved.

[0194] Of course, in other embodiments, the fourth capillary channel can also have the same extension direction as the first capillary channel, both extending along the first direction; in some other embodiments, part of the fourth capillary channel can have the same extension direction as the first capillary channel, and another part of the fourth capillary channel extends in the first plane.

[0195] In other embodiments, the aerosol generating substrate in the liquid inlet channel 10c can first enter the fourth capillary channel, then enter the first capillary channel from the fourth capillary channel, and supply liquid to the ultrasonic atomization piece 22 through the first capillary channel.

[0196] It should be noted that the specific material of the first liquid guide 211 and the second liquid guide 212 is not limited here.

[0197] Here, the material of the first liquid guide 211 and the second liquid guide 212 can be the same or different.

[0198] Exemplarily, the first liquid guide 211 includes but is not limited to a porous fiber structure, a porous ceramic, a porous plastic, or a porous glass, etc.

[0199] Exemplarily, the second liquid guide 212 includes but is not limited to a porous fiber structure, a porous ceramic, a porous plastic, or a porous glass, etc.

[0200] Here, the second liquid guide 212 forms a woven cotton structure in the form of weaving, which is beneficial to the second liquid guide 212 to form the fourth capillary channel extending in the first plane.

[0201] In some embodiments, referring to FIGS. 3-5, the liquid inlet end 21a and the liquid supply end 21b are arranged at both ends of the liquid guide 21 along the first direction, the second liquid guide 212 includes a liquid guide cotton, and the size of the second liquid guide 212 in the first direction is 0.1-0.3 mm.

[0202] The size of the second liquid guide 212 in the first direction can be a point value of any one of 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.22 mm, 0.25 mm, 0.28 mm, 0.3 mm or a point value between any two of them.

[0203] It can be understood that the size of the second liquid guide 212 in the first direction is too large or too small, which will cause too little or too much liquid supply, which is not conducive to atomization.

[0204] In this embodiment, the size of the second liquid guide 212 in the first direction is set to 0.1-0.3 mm. The size of the second liquid guide 212 in this range is moderate, so that the liquid supply speed of the liquid guide 21 is moderate, which is conducive to improving the atomization efficiency.

[0205] In some embodiments, referring to FIGS. 3-5, the liquid inlet end 21a and the liquid supply end 21b are arranged at the two ends of the liquid guide 21 in the first direction. The end face of the first liquid guide 211 close to the second liquid guide 212 is the first end face, and the end face of the second liquid guide 212 close to the first liquid guide 211 is the second end face. The projection of the first end face on the plane perpendicular to the first direction is located within the projection range of the second end face.

[0206] By setting the projection of the first end face to be located within the projection range of the second end face, the first liquid guide 211 can better guide the aerosol generating substrate to the second liquid guide 212, thereby improving the liquid guiding efficiency of the liquid guide 21.

[0207] The projection of the first end face is located within the projection range of the second end face, that is, the projection area of the first end face is less than or equal to the projection area of the second end face, and the second end face covers the first end face.

[0208] The aerosol generating substrate in the liquid inlet channel 10c first enters the first liquid guide 211, then enters the second end face of the second liquid guide 212 from the first end face of the first liquid guide 211, and is supplied to the ultrasonic atomization piece 22 through the second liquid guide 212. Therefore, by covering the first end face with the second end face, the aerosol generating substrate flowing from the first end face can be adsorbed by the second end face and guided to the ultrasonic atomization piece 22, thereby improving the liquid supply efficiency of the liquid guide 21.

[0209] In some embodiments, referring to FIGS. 3-5 and FIG. 10, the ultrasonic atomization piece 22 includes an open area 22b formed with a micropore 22a. The projection of the open area 22b on the plane perpendicular to the first direction is located within the projection range of the first end face.

[0210] By setting the projection of the open area 22b to be located within the projection range of the first end face, the liquid guide 21 can better guide the aerosol generating substrate to the open area 22b, thereby improving the liquid guiding efficiency of the liquid guide 21.

[0211] The projection of the open area 22b is located within the projection range of the first end face, that is, the projection area of the open area 22b is less than or equal to the projection area of the first end face. In this way, the liquid guide 21 can cover the open area 22b.

[0212] The aerosol generating substrate in the liquid inlet channel 10c first enters the first liquid guide 211, then enters the second end surface of the second liquid guide 212 from the first end surface of the first liquid guide 211, and supplies liquid to the open hole area 22b through the second liquid guide 212. Therefore, by covering the open hole area 22b with the liquid guide 21, the open hole area 22b can be supplied with liquid by the liquid guide 21, thereby facilitating the liquid supply efficiency of the liquid guide 21.

[0213] In some embodiments, referring to FIGS. 11-13, the ultrasonic atomization sheet 22 includes an open hole area 22b formed with micro-holes 22a, and the shape of the liquid supply end 21b is adapted to at least the surface shape of the open hole area 22b of the ultrasonic atomization sheet 22.

[0214] By setting the shape of the liquid supply end 21b to be adapted to at least the surface shape of the open hole area 22b of the ultrasonic atomization sheet 22, the liquid supply speed and uniformity of the liquid guide 21 can be improved, thereby improving the uniformity of aerosol release.

[0215] Here, the shape of the liquid supply end 21b being adapted to at least the surface shape of the open hole area 22b of the ultrasonic atomization sheet 22 means that the shape of the liquid supply end 21b can be adapted to only the surface shape of the open hole area 22b, and can also match at least part of the non-porous area of the ultrasonic atomization sheet 22.

[0216] The shape of the liquid supply end 21b being adapted to at least the surface shape of the open hole area 22b of the ultrasonic atomization sheet 22 can make the liquid supply end 21b better cover the open hole area 22b, that is, the liquid supply end 21b is in close contact with the open hole area 22b, or the spacing between the liquid supply end 21b and the open hole area 22b is substantially the same. In this way, the liquid supply speed and uniformity of the liquid guide 21 can be improved, thereby improving the uniformity of aerosol release.

[0217] It should be noted that the form of the shape of the liquid supply end 21b being adapted to at least the surface shape of the open hole area 22b of the ultrasonic atomization sheet 22 is not limited here.

[0218] In some embodiments, referring to FIG. 12, the liquid guide 21 includes a first liquid guide 211 and a second liquid guide 212. The end of the second liquid guide 212 away from the first liquid guide 211 is the liquid supply end 21b, and the end of the first liquid guide 211 away from the second liquid guide 212 is the liquid inlet end 21a. The first liquid guide 211 has a first capillary channel, and the second liquid guide 212 is provided with a fourth capillary channel. The capillary force of the fourth capillary channel is greater than that of the first capillary channel. The second liquid guide 212 is in a sheet structure, and can be in close contact with the surface of the ultrasonic atomization sheet 22 after liquid absorption.

[0219] By setting the second liquid guide 212 as a sheet structure, and the second liquid guide 212 being able to fit the surface of the ultrasonic atomization sheet 22 after absorbing liquid, the forming of the second liquid guide 212 is facilitated, the production efficiency is improved, and the cost is reduced.

[0220] That is, the initial shape of the second liquid guide 212 does not necessarily match the surface shape of the opening region 22b of the ultrasonic atomization sheet 22, but can fit the surface of the ultrasonic atomization sheet 22 after absorbing liquid, so as to match the surface shape of the opening region 22b of the ultrasonic atomization sheet 22.

[0221] Here, since the second liquid guide 212 is set as a sheet structure, for example, a porous fiber structure, has a certain flexibility, and can deform after absorbing liquid, so that the second liquid guide 212 fits the surface of the ultrasonic atomization sheet 22.

[0222] In other embodiments, referring to FIG. 13, the liquid inlet end 21a of the liquid guide 21 is directly formed into a shape that at least matches the surface shape of the opening region 22b of the ultrasonic atomization sheet 22.

[0223] In some embodiments, referring to FIGS. 11-13, the side of the ultrasonic atomization sheet 22 facing the liquid guide 21 is convex and forms a convex surface, and the liquid supply end 21b is formed with a concave surface matching the convex surface.

[0224] By forming the liquid supply end 21b with a concave surface matching the convex surface, the structural strength of the ultrasonic atomization sheet 22 is improved, and the liquid supply efficiency of the liquid guide 21 is improved, thereby further improving the atomization efficiency of the ultrasonic atomization sheet 22.

[0225] The side of the ultrasonic atomization sheet 22 facing the liquid guide 21 is convex and forms a convex surface, that is, the convex portion 2222 is closer to the liquid guide 21 than other regions of the ultrasonic atomization sheet 22. By providing the convex portion 2222, the structural strength of the ultrasonic atomization sheet 22 is improved, and the atomization efficiency is improved.

[0226] Of course, in other embodiments, the opening region 22b can also be a plane, and the liquid supply end 21b is also a plane.

[0227] In some embodiments, referring to FIGS. 3-5, the atomizer 100 includes an atomization seat 10, the atomization seat 10 is formed with a liquid inlet channel 10c, the ultrasonic atomization sheet 22 is arranged perpendicular to the height direction of the atomizer 100, the liquid inlet end 21a and the liquid supply end 21b are arranged at both ends of the height direction of the atomizer 100, the liquid supply end 21b faces the ultrasonic atomization sheet 22, and at least part of the liquid inlet end 21a is exposed to the liquid inlet channel 10c.

[0228] When the atomizer 100 is in operation, the aerosol generating substrate in the liquid storage cavity 100a is communicated with the liquid guide 21 through the liquid inlet channel 10c, the liquid guide 21 supplies liquid to the atomization assembly 20 in a bottom-up manner, the atomization assembly 20 atomizes the aerosol generating substrate, the aerosol formed after atomization is discharged from the atomization cavity 10a to the air outlet channel 30a together with the air entering through the air inlet channel 100c, and finally discharged from the air outlet of the air outlet channel 30a for use by the user.

[0229] This upward atomization manner can reduce the length of the flow path of the aerosol formed after atomization, so that the aerosol can reach the air outlet of the air outlet channel 30a more quickly for use by the user. Reducing the length of the flow path can also reduce the possibility of the aerosol colliding with the inner wall due to the long path and forming aerosol condensate, prevent the aroma and concentration from being reduced due to the loss of the aerosol, and at the same time, reduce the possibility of large-particle aerosol condensate droplets blocking the air outlet channel 30a or leaking to the power assembly 200 to cause damage to the device.

[0230] Here, the entire area of the liquid inlet end 21a can be exposed to the liquid inlet channel 10c, or only part of the area of the liquid inlet end 21a can be exposed to the liquid inlet channel 10c.

[0231] At least part of the area of the liquid inlet end 21a being exposed to the liquid inlet channel 10c means that at least part of the area of the liquid inlet end 21a is suspended, which is conducive to improving the liquid supply efficiency of the liquid guide 21, so that the liquid guide 21 can continuously supply liquid to the ultrasonic atomization piece 22.

[0232] In some embodiments, referring to FIGS. 3-5, at least part of the liquid inlet channel 10c is located on the side of the liquid guide 21 away from the atomization cavity 10a, and the side wall of the liquid inlet channel 10c is provided with a support column 10e which supports the side of the liquid guide 21 away from the atomization cavity 10a. That is, the support column 10e supports the liquid inlet end 21a.

[0233] For example, the first direction is the height direction of the atomizer 100, and the liquid outlet of the liquid inlet channel 10c is arranged at the bottom of the liquid guide 21.

[0234] By arranging the support column 10e to support the liquid inlet end 21a, it is conducive to achieving the suspended arrangement of the liquid inlet end 21a, which can improve the liquid supply speed and also improve the utilization rate of the aerosol generating substrate.

[0235] At least part of the liquid inlet channel 10c being located on the bottom side of the liquid guide 21 means that part of the liquid inlet channel 10c can be located on the bottom side of the liquid guide 21, or all of the liquid inlet channel 10c can be located on the bottom side of the liquid guide 21.

[0236] The support column 10e is used to support the liquid guide 21 to realize the assembly of the liquid guide 21.

[0237] The specific number of the support column 10e is not limited here and can be one or multiple.

[0238] When there is little aerosol generating substrate left in the liquid inlet channel 10c, the liquid guide 21 cannot directly adsorb the aerosol generating substrate, and the support column 10e can adsorb the aerosol generating substrate left in the liquid inlet channel 10c by capillary force and guide it to the liquid guide 21, thereby improving the utilization rate of the aerosol generating substrate.

[0239] In this embodiment, the bottom wall of the liquid inlet channel 10c is provided with the support column 10e, which is supported on the second end surface. The support column 10e can guide the aerosol generating substrate on the bottom wall of the liquid inlet channel 10c to the liquid guide 21 while realizing the assembly of the liquid guide 21, which is conducive to improving the utilization rate of the aerosol generating substrate. In addition, the liquid guide 21 adopts a vertical cotton structure and liquid is introduced from the bottom surface of the liquid guide 21, which can make the liquid inlet speed the fastest. The liquid inlet speed of this mode is greater than that of the side of the liquid guide 21, thereby increasing the liquid supply speed of the liquid guide 21.

[0240] The ultrasonic atomization piece 22 is provided with the protruding portion 2222, which can improve the structural strength of the ultrasonic atomization piece 22, reduce the stress and vibration mechanical energy loss of the ultrasonic atomization piece 22, and improve the atomization efficiency.

[0241] In some embodiments, referring to FIGS. 3-5, the side of the ultrasonic atomization piece 22 facing the liquid guide 21 is protruding to form the protruding portion 2222, and the protruding portion 2222 is formed with the micro-holes 22a.

[0242] The side of the ultrasonic atomization piece 22 facing the liquid guide 21 is protruding to form the protruding portion 2222, that is, the protruding portion 2222 is closer to the liquid guide 21 than other regions of the ultrasonic atomization piece 22. The ultrasonic atomization piece 22 is provided with the protruding portion 2222, which is conducive to improving the structural strength of the ultrasonic atomization piece 22 and improving the atomization efficiency.

[0243] The protruding portion 2222 of the ultrasonic atomization piece 22 is formed with the micro-holes 22a, and the ultrasonic atomization piece 22 can convert electrical energy into vibration energy. The ultrasonic atomization piece 22 vibrates to generate ultrasonic waves to atomize the aerosol generating substrate, thereby generating aerosol for the user to use.

[0244] The ultrasonic atomization piece 22 of the embodiment of the present disclosure is formed with a protruding portion 2222 protruding towards one side of the liquid guide piece 21. The protruding portion 2222 is provided on one hand to improve the structural strength of the ultrasonic atomization piece 22 and to improve the situation that the ultrasonic atomization piece 22 is damaged during vibration; on the other hand, the ultrasonic atomization piece 22 is in contact with the liquid guide piece 21 through the protruding portion 2222, and micropores 22a are formed in the protruding portion 2222, which not only realizes the liquid supply of the liquid guide piece 21 to the protruding portion 2222, but also helps to reduce the contact area between the ultrasonic atomization piece 22 and the liquid guide piece 21, reduces the stress and vibration mechanical energy loss of the ultrasonic atomization piece 22, and improves the atomization efficiency; on the other hand, the side wall of the protruding portion 2222 can also atomize the aerosol generating substrate through vibration, further improving the atomization efficiency.

[0245] Here, the specific structure of the ultrasonic atomization piece 22 is not limited here.

[0246] In some embodiments, as shown in FIGS. 4 and 10, the ultrasonic atomization piece 22 includes a piezoelectric ceramic piece 221 and a microporous piece 222, and the middle region of the piezoelectric ceramic piece 221 has a through hole 221a. The microporous piece 222 includes a body 2221 and a protruding portion 2222, the body 2221 is stacked on the bottom side of the piezoelectric ceramic piece 221 and connected to the piezoelectric ceramic piece 221, and the protruding portion 2222 is arranged at the part of the microporous piece 222 within the range of the through hole 221a.

[0247] Here, the protruding portion 2222 can be in contact with the liquid guide piece 21, so as to facilitate the liquid supply between the liquid guide piece 21 and the protruding portion 2222; or the protruding portion 2222 and the liquid guide piece 21 can have a certain gap, so that the liquid supply between the liquid guide piece 21 and the protruding portion 2222 can be realized through the action of capillary force, so as to form an oil film (aerosol generating substrate film) between the protruding portion 2222 and the liquid guide piece 21, that is, the aerosol generating substrate is in real-time contact with the ultrasonic atomization piece 22, and the influence of the liquid guide piece 21 on the vibration of the protruding portion 2222 can be reduced, the atomization efficiency is improved, and the service life of the ultrasonic atomization piece 22 is improved.

[0248] Exemplarily, the body 2221 of the microporous piece 222 can be bonded to the bottom side of the piezoelectric ceramic piece 221 by a conductive adhesive.

[0249] The working principle of the atomization assembly 20 is mainly that the piezoelectric ceramic piece 221 transducer converts electrical energy into high-frequency vibration mechanical energy, drives the microporous piece 222 to vibrate at high frequency, the aerosol generating substrate passes through the microporous piece 222 to form a micron aerosol, and thus the aerosol is generated. Vibration atomization has the advantages of small noise, low energy consumption, no smoke oil cracking at low temperature, smokeless, and also can use water as a solvent, better smoking experience, less harm, and smokeless.

[0250] Here, by realizing the smokeless of the aerosol generating device 1000, the aerosol forms carbon dioxide and water in the air, is environmentally friendly, and is more suitable for lung suction at room temperature.

[0251] Referring to FIGS. 12 and 13, the middle region of the piezoelectric ceramic sheet 221 has an avoiding through hole 221a for avoiding the liquid outlet. The micro-holes 22a of the ultrasonic atomization sheet 22 are arranged on the protruding portion 2222 and are located within the range of the avoiding through hole 221a. When the atomizer 100 is in a working state, the piezoelectric ceramic sheet 221 will deform mechanically with the change of voltage and frequency, thereby atomizing the aerosol generating substrate of the liquid inlet channel 10c into aerosol in the vibration process.

[0252] In some embodiments, the micro-hole sheet 222 is made of stainless steel. The hardness of stainless steel is high, so that the micro-hole sheet 222 can well maintain its own shape even if it vibrates together with the piezoelectric ceramic sheet 221, and is not easy to deform.

[0253] Of course, in some other embodiments, the micro-hole sheet 222 can also be made of any other suitable material.

[0254] It should be noted that the specific shape of the protruding portion 2222 is not limited here.

[0255] Exemplarily, the outer contour of the protruding portion 2222 is a spherical crown surface.

[0256] Here, the spherical crown refers to the curved surface left after a spherical surface is cut by a plane. That is to say, at least part of the side wall of the protruding portion 2222 is a curved surface.

[0257] It can be understood that by setting the outer contour of the protruding portion 2222 as a spherical crown surface, the side wall of the protruding portion 2222 is a curved surface. In this way, by arranging the micro-holes 22a on the side wall of the protruding portion 2222, it is beneficial that the side wall of the protruding portion 2222 can also atomize the aerosol generating substrate by vibration, that is, the protruding portion 2222 can atomize the aerosol generating substrate by vibration in the axial direction and the radial direction, further improving the atomization efficiency.

[0258] In some embodiments, referring to FIGS. 3 to 4, the protruding portion 2222 includes a planar segment 2223 and a curved segment 2224, the curved segment 2224 is annularly arranged on the circumferential side of the planar segment 2223, and the curved segment 2224 is connected with the body 2221.

[0259] That is to say, the middle region of the protruding portion 2222 is the planar segment 2223, and the planar segment 2223 is connected with the body 2221 through the curved segment 2224.

[0260] Exemplarily, the plane in which the planar section 2223 lies is parallel to the plane in which the body 2221 lies.

[0261] It can be understood that the ultrasonic atomization sheet 22 is connected to the piezoelectric ceramic sheet 221 through the body 2221, and the protruding portion 2222 atomizes the aerosol generating substrate through vibration, so that the vibration at the center of the protruding portion 2222 is greater.

[0262] In this embodiment, the protruding portion 2222 is provided to include the planar section 2223 and the curved section 2224, that is, the middle region of the protruding portion 2222 is the planar section 2223, which is advantageous to improve the structural strength of the middle region of the protruding portion 2222, thereby improving the reliability of the protruding portion 2222; and the planar section 2223 is connected to the body 2221 through the curved section 2224, that is, the provision of the curved section 2224 is advantageous to improve the atomization efficiency.

[0263] It should be noted that the arrangement of the micropores 22a on the protruding portion 2222 is not limited herein. For example, the protruding portion 2222 can be covered with micropores 22a, or can include an open hole region 22b provided with micropores 22a and a non-hole region without micropores 22a.

[0264] In some embodiments, referring to FIGS. 3-4 and 10, the protruding portion 2222 includes a non-hole region without micropores 22a in the middle. That is, the middle region of the protruding portion 2222 is not provided with micropores 22a.

[0265] Exemplarily, the protruding portion 2222 includes an open hole region 22b provided with micropores 22a and a non-hole region without micropores 22a, and the non-hole region is located in the middle region of the protruding portion 2222.

[0266] Exemplarily, the middle region of the planar section 2223 is a non-hole region.

[0267] In this embodiment, the protruding portion 2222 includes a non-hole region without micropores 22a in the middle, which is advantageous to further improve the structural strength of the middle region of the protruding portion 2222, thereby improving the reliability of the protruding portion 2222.

[0268] In some embodiments, in a projection plane perpendicular to the height direction of the atomizer 100, the equivalent diameter of the projection of the non-hole region is 0.2-0.5 mm.

[0269] The equivalent diameter of the non-hole region refers to the diameter of a circle having the same area as the non-hole region.

[0270] The equivalent diameter of the projection of the non-porous region can be a point value of any one of 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.48 mm, 0.5 mm, or a point value between any two of them.

[0271] In this embodiment, by setting the equivalent diameter of the projection of the non-porous region to 0.2 mm-0.5 mm, the non-porous region in this range is moderate, which has better atomization efficiency and can also improve the structural strength of the middle region of the protrusion 2222, thereby improving the reliability of the protrusion 2222.

[0272] In some embodiments, the size of the protrusion 2222 in the height direction of the atomizer 100 is 0.2 mm-0.6 mm.

[0273] The size of the protrusion 2222 in the height direction of the atomizer 100 can be a point value of any one of 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.48 mm, 0.5 mm, 0.55 mm, 0.58 mm, 0.6 mm, or a point value between any two of them.

[0274] In this embodiment, by setting the size of the protrusion 2222 in the height direction of the atomizer 100 to 0.2 mm-0.6 mm, the height size of the protrusion 2222 in this range is moderate, which has better atomization efficiency and can also improve the structural strength of the protrusion 2222, thereby improving the reliability of the protrusion 2222, and can also be conducive to the liquid guide 21 to conduct the aerosol generating substrate to the protrusion 2222.

[0275] In some embodiments, the equivalent diameter of the projection of the protrusion 2222 in the projection plane perpendicular to the height direction of the atomizer 100 is 1.5 mm-6 mm.

[0276] The equivalent diameter of the projection of the protrusion 2222 can be a point value of any one of 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 5.8 mm, 6 mm, or a point value between any two of them.

[0277] In this embodiment, in the projection plane perpendicular to the height direction of the atomizer 100, by setting the equivalent diameter of the projection of the protrusion 2222 to 1.5 mm-6 mm, the equivalent diameter in this range is moderate, which has better atomization efficiency and can also improve the structural compactness of the atomizer 100.

[0278] In some embodiments, the pore diameter of the micropore 22a is 1.5 μm-3 μm, that is, the pore diameter of the micropore 22a of the ultrasonic atomization piece 22 is between 1.5 μm and 3 μm.

[0279] Exemplarily, the pore diameter of the micropore 22a can be a point value of any one of 1.5 μm, 1.6 μm, 1.7 μm, 1.8 μm, 1.9 μm, 2 μm, 2.1 μm, 2.2 μm, 2.3 μm, 2.4 μm, 2.5 μm, 2.6 μm, 2.7 μm, 2.8 μm, 2.9 μm, 3 μm or a point value between any two of them.

[0280] It should be noted that the aerosol of large particles will affect the taste experience of the user, and therefore the pore diameter of the micropore 22a needs to be moderate so that the particles of the aerosol formed after the vibration atomization of the ultrasonic atomization sheet 22 assembly are generally large.

[0281] In this embodiment, the pore diameter of the micropore 22a of the ultrasonic atomization sheet 22 is set to be between 1.5 μm and 3 μm. The pore diameter of the micropore 22a in this range is moderate, so that the particles of the aerosol formed after the vibration atomization of the ultrasonic atomization sheet 22 with the pore diameter of the micropore 22a in this range are moderate, which has better atomization efficiency and can also guarantee the atomization efficiency and reduce the volatilization of the aroma of the aerosol generating substrate and the possibility of liquid leakage.

[0282] In some embodiments, the porosity of the protrusion 2222 is 1 / 2250-1 / 225.

[0283] The porosity of the protrusion 2222 can be a point value of any one of 1 / 2250, 1 / 2200, 1 / 2100, 1 / 2000, 1 / 1800, 1 / 1500, 1 / 1200, 1 / 1000, 1 / 900, 1 / 800, 1 / 700, 1 / 600, 1 / 500, 1 / 400, 1 / 300, 1 / 250, 1 / 225 or a point value between any two of them.

[0284] In this embodiment, the porosity of the protrusion 2222 is set to be 1 / 2250-1 / 225. The porosity in this range is moderate, which has better atomization efficiency and can also make the ultrasonic atomization sheet 22 have better structural strength.

[0285] In some embodiments, referring to FIGS. 2-5, the central axis of the protrusion 2222 is parallel to the central axis of the air outlet channel 30a.

[0286] Exemplarily, the central axis of the protrusion 2222 coincides with the central axis of the air outlet channel 30a. Considering the assembly tolerance and the manufacturing error of the parts, the coincidence described here can be complete coincidence or approximate coincidence.

[0287] In this embodiment, by setting the central axis of the protruding portion 2222 parallel to the central axis of the air outlet passage 30a, the protruding portion 2222 can be directly opposite the air outlet passage 30a. In this way, the aerosol generated after the aerosol generating substrate is atomized by the protruding portion 2222 can directly enter the air outlet passage 30a, improving the situation that the aerosol contacts the side wall of the air outlet passage 30a or the cavity wall of the atomization cavity 10a to form aerosol condensate, which is conducive to reducing the generation of aerosol condensate, thereby improving the atomization efficiency.

[0288] Of course, in other embodiments, the central axis of the protruding portion 2222 and the central axis of the air outlet passage 30a can also have an angle, and the angle is between 0-90 degrees.

[0289] In the related art, since more than 70% of the aerosol generating substrate used is water, aerosol condensate may be generated when it encounters the side wall of the air outlet passage 30a, which may affect the atomization amount.

[0290] In some embodiments, referring to FIGS. 2-3, in a projection plane perpendicular to the height direction of the atomizer 100, the projection of the opening region 22b is located within the projection range of the air outlet passage 30a.

[0291] That is, in a cross section perpendicular to the height direction of the atomizer 100, the projection area of the opening region 22b is less than or equal to the projection area of the air outlet passage 30a.

[0292] In this embodiment, by setting the projection of the opening region 22b within the projection range of the air outlet passage 30a, the aerosol generated after the aerosol generating substrate is atomized by the opening region 22b can directly enter the air outlet passage 30a, improving the situation that the aerosol contacts the side wall of the air outlet passage 30a or the cavity wall of the atomization cavity 10a to form aerosol condensate, which is further conducive to reducing the generation of aerosol condensate, thereby further improving the atomization efficiency and the atomization amount.

[0293] In the related art, during the process of suction, the aerosol may form aerosol condensate after contacting the side wall of the air outlet passage, and gradually form droplets or liquid columns as the aerosol condensate accumulates, which are carried out by subsequent suction, or flow back to the atomization surface of the ultrasonic atomization sheet. In addition, due to the pressure difference or temperature difference, the aerosol generating substrate may flow from the air exchange passage or the micropore to the atomization surface of the ultrasonic atomization sheet, which may cause the loss of vibration mechanical energy of the ultrasonic atomization sheet or the ultrasonic atomization sheet cannot form high-frequency vibration, i.e., the ultrasonic atomization sheet may not work, thereby reducing the atomization efficiency and further providing a poor user experience.

[0294] To solve the above problems, by setting a collection structure for collecting the aerosol condensate, the loss of the vibration mechanical energy of the ultrasonic atomization sheet 22 or the failure of the ultrasonic atomization sheet 22 to form high-frequency vibration due to the aerosol condensate flowing into the atomization surface of the ultrasonic atomization sheet 22 can be improved, thereby facilitating the improvement of the atomization efficiency and the service life of the ultrasonic atomization sheet 22.

[0295] In some embodiments, referring to FIGS. 2-9, the atomizer 100 includes a collection structure at least partially disposed in the atomization cavity 10a, the collection structure being configured to collect the aerosol condensate to prevent the aerosol condensate from flowing into the atomization surface of the ultrasonic atomization sheet 22.

[0296] The ultrasonic atomization sheet 22 includes a liquid absorption surface and an atomization surface, the side of the ultrasonic atomization sheet 22 facing the liquid guide 21 being the liquid absorption surface, and the side of the ultrasonic atomization sheet 22 facing away from the liquid guide 21 being the atomization surface.

[0297] Here, the collection structure can be entirely disposed in the atomization cavity 10a or partially disposed in the atomization cavity 10a.

[0298] In this embodiment, by setting a collection structure for collecting the aerosol condensate to prevent the aerosol condensate from flowing into the atomization surface of the ultrasonic atomization sheet 22, the loss of the vibration mechanical energy of the ultrasonic atomization sheet 22 or the failure of the ultrasonic atomization sheet 22 to form high-frequency vibration due to the aerosol condensate flowing into the atomization surface of the ultrasonic atomization sheet 22 can be improved, thereby facilitating the improvement of the atomization efficiency and the service life of the ultrasonic atomization sheet 22.

[0299] It should be noted that the specific structure of the collection structure is not limited herein.

[0300] In some embodiments, referring to FIGS. 4-9, the collection structure includes capillary grooves formed in the inner wall of the atomization cavity 10a.

[0301] Here, the capillary groove refers to a groove capable of generating a capillary phenomenon for the liquid located in the capillary groove.

[0302] The capillary phenomenon refers to a phenomenon occurring in a capillary groove with a linear dimension small enough to be comparable to the curvature radius of the liquid meniscus. The entire liquid surface in the capillary groove will be curved, and the interaction between liquid and solid molecules can be extended to the entire liquid, and the liquid surface curvature will generate a certain capillary force.

[0303] Here, the capillary grooves can be interconnected; can be partially interconnected and partially not interconnected; or can be not interconnected.

[0304] By setting the capillary groove on the inner wall of the atomization cavity 10a, the capillary groove can generate a certain capillary force on the aerosol condensate formed by the aerosol gathered in the side wall of the air outlet channel 30a or the atomization cavity 10a or the atomization surface of the ultrasonic atomization piece 22, so that the aerosol condensate can be adsorbed and locked to a certain extent. In this way, the flow of the aerosol condensate into the atomization surface of the ultrasonic atomization piece 22 can be improved.

[0305] It should be noted that the specific forming mode of the capillary groove is not limited here.

[0306] In some embodiments, the capillary groove includes at least one first capillary groove 11a formed on the top wall of the atomization cavity 10a.

[0307] Here, the number of the first capillary groove 11a can be one or more.

[0308] The plurality of the present disclosure refers to two or more.

[0309] Exemplarily, referring to FIGS. 2-5, the atomization seat 10 includes an atomization top seat 11 and an atomization bottom seat 12, the atomization top seat 11 is located on the top side of the atomization bottom seat 12, and the capillary groove includes at least one first capillary groove 11a formed on the inner wall of the atomization top seat 11.

[0310] Exemplarily, the inner wall of the atomization top seat 11 can form the first capillary groove 11a by being concave, or part of the area of the inner wall of the atomization top seat 11 can be convex to form a convex rib, and the first capillary groove 11a is formed between the convex ribs.

[0311] Exemplarily, the inner wall of the atomization top seat 11 can be the top wall of the atomization cavity 10a, that is, the first capillary groove 11a is formed on the top wall of the atomization cavity 10a.

[0312] In this embodiment, by setting at least one first capillary groove 11a on the inner wall of the atomization top seat 11, a certain capillary force can be generated on the aerosol condensate formed by the aerosol gathered in the side wall of the air outlet channel 30a or the atomization cavity 10a or the atomization surface of the ultrasonic atomization piece 22, so that the aerosol condensate can be adsorbed and locked to a certain extent.

[0313] In some embodiments, referring to FIGS. 2-5, the capillary groove includes at least one second capillary groove 13a formed on the bottom wall of the atomization cavity 10a.

[0314] Here, the number of the second capillary groove 13a can be one or more.

[0315] Here, the general structure and function of the second capillary groove 13a is the same as the first capillary groove 11a, and will not be repeated here.

[0316] Here, the second capillary grooves 13a can be interconnected, partially interconnected, partially not interconnected, or not interconnected at all.

[0317] For example, the bottom wall of the atomization cavity 10a can be concave to form the second capillary groove 13a, or part of the bottom wall of the atomization cavity 10a can be convex to form a convex rib, and the second capillary groove 13a is formed between the convex ribs.

[0318] In this embodiment, by providing at least one second capillary groove 13a on the bottom wall of the atomization cavity 10a, a certain capillary force can be generated on the aerosol condensate accumulated in the side wall of the air outlet channel 30a or the atomization surface of the ultrasonic atomization piece 22, thereby being able to absorb and lock the aerosol condensate to a certain extent.

[0319] In the embodiment where the first capillary groove 11a and the second capillary groove 13a are formed at the same time, if the aerosol condensate absorbed in the first capillary groove 11a is too much, it can also drip into the second capillary groove 13a, that is, the second capillary groove 13a can also absorb and lock the aerosol condensate that drips from the first capillary groove 11a, that is, the first capillary groove 11a and the second capillary groove 13a can be coordinated to further improve the collection capacity and collection effect of the collection structure on the aerosol condensate.

[0320] In some embodiments, referring to FIG. 4, the capillary groove includes a drainage groove 11n.

[0321] The drainage groove 11n can be used to drain the aerosol condensate on the side wall of the air outlet channel 30a to the first capillary groove 11a, and / or the drainage groove 11n can be used to drain the aerosol condensate on the atomization surface of the ultrasonic atomization piece 22 to the second capillary groove 13a.

[0322] For example, the middle region of the atomization top seat 11 has a second through hole 11e, and the air outlet channel 30a communicates with the atomization cavity 10a through the second through hole 11e. The hole wall of the second through hole 11e is provided with a drainage groove 11n, and the drainage groove 11n communicates with the first capillary groove 11a.

[0323] In some embodiments, the inner wall of the air outlet channel 30a is also provided with a drainage groove 11n.

[0324] Here, the second through hole 11e is used to avoid the air outlet channel 30a.

[0325] In this embodiment, the drainage groove 11n is arranged on the hole wall of the second through hole 11e, which is used to drain the aerosol condensate on the side wall of the air outlet channel 30a to the first capillary groove 11a, thereby improving the situation that the aerosol condensate on the side wall of the air outlet channel 30a drops to the atomization surface of the ultrasonic atomization piece 22.

[0326] In some embodiments, referring to FIG. 3, the hole wall of the first through hole 10d is provided with a drainage groove 11n, which can be used to drain the aerosol condensate on the atomization surface of the ultrasonic atomization piece 22 to the second capillary groove 13a.

[0327] By arranging the buffer groove 11b, the collection capacity and collection effect of the collection structure on the aerosol condensate are further improved.

[0328] In some embodiments, referring to FIG. 3, the collection structure further includes a buffer groove 11b formed in the bottom wall of the atomization cavity 10a, and the second capillary groove 13a is communicated to the buffer groove 11b.

[0329] Here, the buffer groove 11b can be formed by recessing the top wall of the atomization base 12, or the buffer groove 11b can be formed by protruding the top wall of the atomization base 12 to form a protruding rib, and the protruding rib surrounds to form the buffer groove 11b. Of course, other components arranged on the atomization base 12 can also form the buffer groove 11b.

[0330] In this embodiment, by forming the buffer groove 11b on the bottom wall of the atomization cavity 10a, and by communicating the second capillary groove 13a to the buffer groove 11b, when the second capillary groove 13a adsorbs a certain amount of aerosol condensate or is full of aerosol condensate, the aerosol condensate in the second capillary groove 13a can flow into the buffer groove 11b and be stored in the buffer groove 11b, thereby further improving the collection capacity and collection effect of the collection structure on the aerosol condensate. In addition, the aerosol condensate in the first capillary groove 11a can also flow into the second capillary groove 13a and the buffer groove 11b and be stored in the second capillary groove 13a and the buffer groove 11b.

[0331] In some embodiments, referring to FIGS. 2 to 4, the atomizer 100 includes an air exchange channel 10b, the air inlet of the air exchange channel 10b is communicated to the buffer groove 11b, and the air outlet of the air exchange channel 10b is communicated to the liquid storage cavity 100a.

[0332] The aerosol generating substrate in the liquid storage cavity 100a is guided by the liquid inlet channel 10c to the atomization assembly 20 for atomization to generate aerosol. After the aerosol generating substrate in the liquid storage cavity 100a is consumed, the air outside enters the air inlet of the air exchange channel 10b through the buffer groove 11b, and then enters the liquid storage cavity 100a to balance the pressure in the liquid storage cavity 100a.

[0333] Exemplarily, the air outlet of the air exchange channel 10b penetrates the sidewall of the atomization base 12.

[0334] In this embodiment, by connecting the air inlet of the air exchange channel 10b to the buffer groove 11b, and meanwhile, the first capillary groove 11a, the second capillary groove 13a and the buffer groove 11b are all connected, in the case that the liquid storage cavity 100a is under negative pressure, the aerosol generating substrate in the first capillary groove 11a, the second capillary groove 13a and the buffer groove 11b can be sucked into the liquid storage cavity 100a through the air exchange channel 10b, thereby improving the utilization rate of the aerosol generating substrate.

[0335] It should be noted that the number of air exchange channels 10b is not limited herein. It can be one or multiple.

[0336] In the related art, the number of air exchange channels of the aerosol generating device is two, and the two air exchange channels are symmetrically arranged on the two sides of the aerosol generating device along the length direction or the width direction. In the case that the aerosol generating device is placed on the side, the air exchange channel located on the upper side is connected to the atmosphere, and the air pressure in the liquid storage cavity is consistent with the atmospheric pressure. The aerosol generating substrate can flow out of the air exchange channel on the other side, which can cause liquid leakage.

[0337] In some embodiments, referring to FIG. 3, by setting the number of air exchange channels 10b to one, the situation that the aerosol generating substrate flows out of the air exchange channel 10b and causes liquid leakage in the case that the aerosol generating device 1000 is placed on the side can be improved.

[0338] In other embodiments, the number of air exchange channels 10b is two, and the distance between the air outlets of the two air exchange channels 10b is less than or equal to 6 mm.

[0339] The distance between the air outlets of the two air exchange channels 10b can refer to the length of the shortest line connecting the air outlets of the two air exchange channels 10b on the outer surface of the atomization base 10, or the straight-line distance between the air outlets of the two air exchange channels 10b.

[0340] In this embodiment, by setting the number of air exchange channels 10b to two and the distance between the air outlets of the two air exchange channels 10b to be less than or equal to 6 mm, the air exchange efficiency can be improved, and at the same time, the situation that the aerosol generating substrate flows out of the air exchange channel 10b and causes liquid leakage in the case that the aerosol generating device 1000 is placed on the side can be improved.

[0341] In some embodiments, referring to FIG. 6, the capillary groove further includes at least one third capillary groove 11c formed in the groove wall of the buffer groove 11b.

[0342] Here, the general structure and function of the third capillary groove 11c are the same as those of the first capillary groove 11a and the second capillary groove 13a, and thus will not be described here.

[0343] Here, in the embodiment in which the third capillary groove 11c is multiple, the multiple third capillary grooves 11c can be in communication with each other, can be partially in communication and partially not in communication, or can not be in communication with each other.

[0344] It should be noted that the specific formation of the third capillary groove 11c is not limited here. For example, the groove wall of the buffer groove 11b can be recessed to form the third capillary groove 11c, or part of the groove wall of the buffer groove 11b can be protruded to form a protruding rib, and the third capillary groove 11c can be formed by surrounding the protruding ribs.

[0345] In this embodiment, by providing the third capillary groove 11c, the third capillary groove 11c can generate a certain capillary force on the aerosol condensate, thereby being able to absorb and lock the aerosol condensate to some extent, so as to improve the situation that the aerosol condensate flows out of the buffer groove 11b when the atomizer 100 is in the side direction.

[0346] In some embodiments, referring to FIGS. 2 to 5, the collection structure includes a porous wick arranged in the atomization cavity 10a.

[0347] For example, the porous wick includes cotton, ceramic, or the like.

[0348] In this embodiment, by arranging the porous wick in the atomization cavity 10a, the porous wick can absorb and lock the aerosol condensate gathered on the side wall of the air outlet passage 30a or in the atomization cavity 10a, or the aerosol condensate on the atomization surface of the ultrasonic atomization piece 22.

[0349] In some embodiments, referring to FIGS. 3 to 7, the atomizer 100 includes a mounting piece 13, and the ultrasonic atomization piece 22 is mounted to the atomization seat 10 through the mounting piece 13. At least part of the mounting piece 13 is arranged on the top of the atomization base 12, and the mounting piece 13, the atomization top seat 11, and the atomization base 12 jointly define the atomization cavity 10a.

[0350] For example, the mounting piece 13 can have a sealing effect.

[0351] The mounting piece 13 has a first through hole 10d, and the hole wall of the first through hole 10d is provided with a ring groove 13b. The mounting piece 13 surrounds the ultrasonic atomization piece 22, and the edge of the ultrasonic atomization piece 22 is embedded in the ring groove 13b.

[0352] Here, the first through hole 10d is used to avoid the liquid outlet of the liquid inlet channel 10c, and the hole wall of the first through hole 10d is provided with an annular groove 13b, the mounting member 13 surrounds the ultrasonic atomization piece 22, and the edge of the ultrasonic atomization piece 22 is embedded in the annular groove 13b, so that the ultrasonic atomization piece 22 can be mounted in the annular groove 13b of the mounting member 13.

[0353] For example, the mounting member 13 is clamped between the atomization top seat 11 and the atomization bottom seat 12, that is, the mounting member 13 can also be used to seal the gap between the atomization top seat 11 and the atomization bottom seat 12.

[0354] For example, at least part of the liquid guide member 21 is arranged in the first through hole 10d.

[0355] In the embodiment of the present disclosure, the mounting member 13 also reserves a through hole for avoiding the liquid inlet channel 10c.

[0356] The mounting member 13 can be made of silica gel or other materials, and the material of the mounting member 13 is not specifically limited in the embodiment of the present disclosure.

[0357] It should be noted that there are various ways to form the second capillary groove 13a.

[0358] In some embodiments, referring to FIGS. 3, 7 and 9, the top wall of the mounting member 13 can be provided with the second capillary groove 13a, at this time, the mounting member 13 constitutes at least part of the bottom wall of the atomization cavity 10a; the top wall of the atomization bottom seat 12 can also be provided with the second capillary groove 13a, at this time, the atomization bottom seat 12 constitutes at least part of the bottom wall of the atomization cavity 10a; the top wall of the atomization bottom seat 12 and the top wall of the mounting member 13 can also be provided with the second capillary groove 13a, at this time, the atomization bottom seat 12 and the mounting member 13 constitute at least part of the bottom wall of the atomization cavity 10a.

[0359] In some embodiments, referring to FIGS. 3, 7 and 9, the hole wall of the first through hole 10d is provided with a drainage groove 11n, and the drainage groove 11n communicates with the second capillary groove 13a.

[0360] In this embodiment, by arranging the drainage groove 11n on the hole wall of the first through hole 10d, the aerosol condensate on the atomization surface of the ultrasonic atomization piece 22 is drained to the second capillary groove 13a, so that the loss of vibration mechanical energy of the ultrasonic atomization piece 22 or the situation that the ultrasonic atomization piece 22 cannot form high-frequency vibration caused by the aerosol condensate flowing into the atomization surface of the ultrasonic atomization piece 22 can be improved, thereby facilitating to improve the atomization efficiency and prolong the service life of the ultrasonic atomization piece 22.

[0361] In some embodiments, referring to FIGS. 3-4, the ultrasonic atomization piece 22 is arranged on the atomization seat 10, and the ultrasonic atomization piece 22 is capable of being displaced relative to the atomization seat 10 in the thickness direction of the ultrasonic atomization piece 22.

[0362] By arranging the ultrasonic atomization piece 22 to be capable of being displaced relative to the atomization seat 10 in the thickness direction of the ultrasonic atomization piece 22, the mechanical vibration energy of the ultrasonic atomization piece 22 is advantageously reduced in loss during vibration of the ultrasonic atomization piece 22, and the mechanical vibration energy is maximized for atomizing the aerosol generating substrate, thereby improving atomization efficiency.

[0363] In some embodiments, referring to FIGS. 3-4, the atomization assembly 20 includes a mounting member 13, and the ultrasonic atomization piece 22 is mounted on the atomization seat 10 by the mounting member 13. The ultrasonic atomization piece 22 is capable of being displaced relative to the mounting member 13 in the thickness direction of the ultrasonic atomization piece 22, and / or the mounting member 13 is capable of being displaced relative to the atomization seat 10.

[0364] During vibration of the ultrasonic atomization piece 22, the ultrasonic atomization piece 22 is capable of being displaced relative to the mounting member 13, which advantageously reduces the mechanical vibration energy of the ultrasonic atomization piece 22 in loss.

[0365] During vibration of the ultrasonic atomization piece 22, the mounting member 13 is capable of being displaced relative to the atomization seat 10, which advantageously reduces the mechanical vibration energy of the ultrasonic atomization piece 22 in loss.

[0366] In some embodiments, referring to FIGS. 3-4, the mounting member 13 is sealingly fitted to the side of the ultrasonic atomization piece 22 facing the liquid guide 21.

[0367] By sealingly fitting the mounting member 13 to the side of the ultrasonic atomization piece 22 facing the liquid guide 21, the problem of liquid leakage is advantageously improved. In addition, the contact area of the aerosol generating substrate and the piezoceramic piece 221 can be as small as possible, thereby advantageously reducing the precipitation of metal in the piezoceramic piece 221 and improving safety performance.

[0368] For example, the mounting member 13 can be made of an elastic material such as rubber or silicone, and the mounting member 13 can be sealingly fitted to the side of the ultrasonic atomization piece 22 facing the liquid guide 21 by interference fit.

[0369] A gap exists between the mounting member 13 and the ultrasonic atomization piece 22, which reduces the contact area and friction between the mounting member 13 and the ultrasonic atomization piece 22, thereby further advantageously reducing the mechanical vibration energy of the ultrasonic atomization piece 22 in loss, maximizing the mechanical vibration energy for atomizing the aerosol generating substrate, and further improving atomization efficiency.

[0370] In some embodiments, please continue to refer to Figures 3 and 4, the mounting member 13 is provided with abutting ribs 13c, and the mounting member 13 contacts at least one side of the ultrasonic atomizing sheet 22 along the thickness direction through the abutting ribs 13c.

[0371] By setting the abutment rib 13c, the contact area and friction between the mounting part 13 and the ultrasonic atomizing plate 22 are reduced, which further helps to reduce the loss of vibration mechanical energy of the ultrasonic atomizing plate 22, and maximizes the use of vibration mechanical energy for atomizing aerosol to generate matrix, thereby further improving atomization efficiency.

[0372] The mounting member 13 contacts at least one side of the ultrasonic atomizing sheet 22 along the thickness direction through the abutting rib 13c. This means that the mounting member 13 can contact one side of the ultrasonic atomizing sheet 22 along the thickness direction through the abutting rib 13c, or it can contact both sides of the ultrasonic atomizing sheet 22 along the thickness direction through the abutting rib 13c.

[0373] In some embodiments, please refer to Figures 3, 4 and 7. The first through hole 10d is used to avoid the outlet of the liquid inlet channel 10c. The wall of the first through hole 10d is provided with an annular groove 13b. The mounting member 13 surrounds the ultrasonic atomizing plate 22, and the edge of the ultrasonic atomizing plate 22 is embedded in the annular groove 13b. In this way, the ultrasonic atomizing plate 22 can be installed in the annular groove 13b of the mounting member 13.

[0374] In this embodiment, by embedding the edge of the ultrasonic atomizing sheet 22 into the annular groove 13b, the aerosol generating matrix and the piezoelectric ceramic sheet 221 can be isolated as much as possible, that is, the contact area between the aerosol generating matrix and the piezoelectric ceramic sheet 221 can be minimized, which is beneficial to reduce the precipitation of metal in the piezoelectric ceramic sheet 221.

[0375] For example, a portion of the sidewall of the liquid inlet channel 10c extends through to form a liquid outlet, which communicates with the first through hole 10d.

[0376] For example, the liquid outlet passes through the centerline of the gas outlet channel 30a.

[0377] In some embodiments, please refer to Figures 3, 4 and 7. The mounting member 13 includes a first mounting member 131 and a second mounting member 132. The second mounting member 132 is located on the side of the first mounting member 131 near the air outlet passage 30a. The first mounting member 131 and the second mounting member 132 together define an annular groove 13b and a first through hole 10d.

[0378] Here, the first mounting component 131 and the second mounting component 132 can be an integral structure, which helps to reduce the number of parts, lower costs, and improve assembly efficiency.

[0379] Of course, the first mounting member 131 and the second mounting member 132 can also be a split structure, so that it is beneficial to form the required structure, and it is convenient to assemble the ultrasonic atomization piece 22 to the ring groove 13b.

[0380] Here, the first mounting member 131 and the second mounting member 132 jointly define the first through hole 10d, which means that part of the first through hole 10d is formed on the first mounting member 131, and the other part is formed on the second mounting member 132.

[0381] In this embodiment, the mounting member 13 is provided by being composed of the first mounting member 131 and the second mounting member 132, and the first mounting member 131 and the second mounting member 132 are stacked to jointly define the ring groove 13b, that is, the first mounting member 131 and the second mounting member 132 seal and clamp the ultrasonic atomization piece 22 therebetween to fix the ultrasonic atomization piece 22.

[0382] In some embodiments, please continue to refer to FIGS. 3, 4 and 7, the groove wall of the ring groove 13b is provided with an abutting protruding rib 13c, and the mounting member 13 is in contact with the ultrasonic atomization piece 22 through the abutting protruding rib 13c.

[0383] The groove wall of the ring groove 13b is provided with an abutting protruding rib 13c, which means that the groove wall of the ring groove 13b can be provided with an abutting protruding rib 13c on one side in the thickness direction of the ultrasonic atomization piece 22, or can be provided with an abutting protruding rib 13c on both sides in the thickness direction of the ultrasonic atomization piece 22.

[0384] In some embodiments, please continue to refer to FIGS. 3, 4 and 8, the inner wall of the atomization top seat 11 is provided with an abutting protrusion 11d, and the abutting protrusion 11d abuts on the mounting member 13.

[0385] The inner wall of the atomization top seat 11 protrudes and extends towards the ultrasonic atomization piece 22, so that the abutting protrusion 11d abuts on the mounting member 13, and the ultrasonic atomization piece 22 is fixed in the ring groove 13b of the mounting member 13.

[0386] Here, the specific number of the abutting protrusion 11d is not limited herein, which can be one or more.

[0387] The plurality of the embodiments of the present disclosure means two or more.

[0388] In this embodiment, by providing the abutting protrusion 11d, the abutting protrusion 11d abuts on the mounting member 13, which not only fixes the ultrasonic atomization piece 22 in the ring groove 13b of the mounting member 13, but also reduces the abutting area and the force, thereby reducing the loss of vibration mechanical energy and improving the atomization efficiency.

[0389] In some embodiments, referring to FIGS. 2-7, the mounting member 13 is in elastic contact with the side of the ultrasonic atomization sheet 22 away from the liquid guide 21.

[0390] In this way, the hard contact between the mounting member 13 and the ultrasonic atomization sheet 22 is further reduced, thereby reducing the loss of vibration mechanical energy and improving atomization efficiency.

[0391] For example, the mounting member 13 can be in elastic contact with the side of the ultrasonic atomization sheet 22 away from the liquid guide 21 through an elastic structure, a spring, or an air cavity.

[0392] For example, the mounting member 13 can include an elastic material such as rubber or silicone, thereby achieving elastic contact with the side of the ultrasonic atomization sheet 22 away from the liquid guide 21.

[0393] In some embodiments, referring to FIGS. 1-5, the housing assembly 30 includes a mouthpiece 30b, and in a cross section perpendicular to the height direction of the aerosol generating device 1000, the cross section of the mouthpiece 30b has a dimension along the second direction greater than a dimension along the third direction. In a projection plane perpendicular to the height direction of the aerosol generating device, a line between the liquid inlet 11m of the at least one liquid inlet passage 10c and the center of the atomizer 100 is L1, and an angle between L1 and the second direction is 60°-90°. The second direction, the third direction, and the height direction of the aerosol generating device 1000 intersect.

[0394] For example, the housing assembly 30 includes a housing, and the housing and the mouthpiece 30b can be in an integrated structure or a split structure.

[0395] Referring to FIG. 1, in a cross section perpendicular to the height direction of the aerosol generating device 1000, the cross section of the mouthpiece 30b has a dimension along the second direction greater than a dimension along the third direction, i.e., the mouthpiece 30b is substantially flat. For example, the aerosol generating device 1000 can also be substantially flat.

[0396] For example, the second direction is the length direction of the aerosol generating device 1000, and the third direction is the width direction of the aerosol generating device 1000.

[0397] The shape of the mouthpiece 30b with a flat cross section can be various, and for example, the cross section of the mouthpiece 30b is rectangular, elliptical, trapezoidal, or racetrack-shaped.

[0398] For example, the racetrack-shaped refers to a shape similar to a track and field track, which is formed by alternately connecting two semicircles or arcs of the same radius and two parallel straight edges.

[0399] Here, the second direction, the third direction, and the height direction of the aerosol generating device 1000 intersecting means that the second direction, the third direction, and the height direction of the aerosol generating device 1000 are not parallel, and for example, the second direction, the third direction, and the height direction of the aerosol generating device 1000 are perpendicular to each other.

[0400] The angle between the line L1 connecting the liquid inlet 11m of the liquid inlet channel 10c and the center of the atomizer 100 and the second direction is 60°-90°, that is, the liquid inlet channel 10c is substantially arranged in the width direction of the atomizing seat 10.

[0401] The angle between the line L1 connecting the liquid inlet 11m of the liquid inlet channel 10c and the center of the atomizer 100 and the second direction can be a point value of any one of 60°, 65°, 70°, 75°, 80°, 85°, 90° or a point value between any two of them.

[0402] For example, the cross section of the suction nozzle 30b of the shell assembly 30 is flat, the two liquid inlets 11m of the liquid inlet channel 10c are arranged at both ends of the width direction (short axis) of the atomizing seat 10, and the short axis direction of the shell assembly 30 is the width direction of the atomizing seat 10.

[0403] Here, the suction nozzle 30b can limit the suction direction of the user, the two sides of the user's mouth corner are consistent with the length direction (second direction) of the suction nozzle 30b, and the length direction of the suction nozzle 30b is the length direction (second direction) of the atomizing seat 10, so that the liquid inlet 11m is arranged in the width direction (third direction) of the atomizing seat 10. In the case that the aerosol generating substrate is relatively small, the two sides of the user's mouth corner are consistent with the length direction (second direction) of the suction nozzle 30b, and the atomizer 100 will produce a certain inclination angle. At this time, one of the liquid inlets 11m of the liquid inlet channel 10c can be located below the liquid level of the aerosol generating substrate, so that the aerosol generating substrate can be fully liquidized from the liquid inlet 11m of the atomizing seat 10, thereby improving the utilization rate of the aerosol generating substrate, and the other liquid inlet 11m is located above the liquid level of the aerosol generating substrate, which is beneficial to the liquidization of the aerosol generating substrate from the liquid inlet 11m located below the liquid level of the aerosol generating substrate.

[0404] For example, the liquid inlet channel 10c penetrates the center line of the air outlet channel 30a, and the two ends of the liquid inlet channel 10c penetrate the side wall of the atomizing seat 10 to form the liquid inlet 11m.

[0405] For example, the atomizing seat 10 is also provided with a plurality of liquid inlet channels 10c, and the angle between the line connecting the liquid inlet 11m of the liquid inlet channel 10c and the center of the atomizer 100 and the second direction can be 60°-90°, or at least one of the liquid inlets 11m of the liquid inlet channel 10c and the center of the atomizer 100 and the second direction can not be within 60°-90°.

[0406] In the description of the disclosure, the description of the terms "in an embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the disclosure. In the disclosure, the illustrative expressions of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the disclosure and the features of different embodiments or examples can be combined by those skilled in the art without contradiction.

[0407] The above only describes the preferred embodiments of the disclosure and is not intended to limit the disclosure. Those skilled in the art can make various modifications and changes to the disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the disclosure is included in the protection scope of the disclosure.

Claims

1. An atomizer, comprising: a housing assembly comprising a mouthpiece, an interior of the mouthpiece having an air outlet channel extending in a first direction, an interior of the housing assembly having a liquid storage cavity for storing an aerosol generating substrate; an atomizing seat, at least a portion of the atomizing seat being disposed in the housing assembly, the atomizing seat being formed with an atomizing cavity and at least one liquid inlet channel, the atomizing cavity being in communication with the air outlet channel, a liquid inlet of the liquid inlet channel being in communication with the liquid storage cavity; wherein, in a cross section perpendicular to the first direction, a dimension of the cross section of the mouthpiece along a second direction is greater than a dimension along a third direction; in a projection plane perpendicular to the first direction, a line between the liquid inlet of the at least one liquid inlet channel and a center of the air outlet channel is L1, an included angle between L1 and the second direction is 60°-90°, and the first direction, the second direction, and the third direction intersect.

2. The atomizer of claim 1, wherein, The atomizer comprises an atomizing assembly, the atomizing assembly comprising a liquid guide, an interior of the atomizing seat having a first through hole, the atomizing cavity and the liquid inlet channel being in communication through the first through hole, at least a portion of the liquid guide being disposed at the first through hole.

3. The atomizer of claim 2, wherein, A circumferential side wall of the liquid guide and a circumferential side wall of the first through hole define a second capillary channel.

4. The atomizer of claim 2, wherein, A gap between the circumferential side wall of the liquid guide and the circumferential side wall of the first through hole is 0.4 mm-0.6 mm.

5. The atomizer of claim 2, wherein, At least a portion of the liquid inlet channel is located on a side of the liquid guide away from the atomizing cavity, a side wall of the liquid inlet channel being provided with a support column protruding, the support column being supported on the side of the liquid guide away from the atomizing cavity.

6. The atomizer of claim 2, wherein, The first direction is a height direction of the atomizer, a liquid outlet of the liquid inlet channel being disposed at a bottom of the liquid guide.

7. The atomizer of claim 2, wherein, A portion of a side wall of the liquid inlet channel is penetrated to form a liquid outlet, the liquid outlet being in communication with the first through hole.

8. The atomizer of any of claims 1-7, wherein, The liquid inlet channel passes through a center line of the air outlet channel, two ends of the liquid inlet channel penetrating a side wall of the atomizing seat to form the liquid inlets.

9. The atomizer of any of claims 2-7, wherein, The atomizing assembly comprises an ultrasonic atomizing sheet, the liquid guide comprising a liquid inlet end and a liquid supply end, the liquid guide being capable of guiding the aerosol generating substrate in the liquid storage cavity to the liquid supply end through the liquid inlet end by capillary force and supplying the liquid to the ultrasonic atomizing sheet, the ultrasonic atomizing sheet atomizing the aerosol generating substrate into aerosol in a vibration process; wherein, a capillary force of the liquid supply end is greater than a capillary force of the liquid inlet end.

10. An aerosol generating device, comprising a power supply assembly and the atomizer of any one of claims 1-9, the power supply assembly being electrically connected with the atomizer.

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