Atomizer and aerosol generating device

Abstract

The invention relates to an atomizer and an aerosol generating device. The atomizer comprises a shell assembly, wherein an air outlet channel is formed in the shell assembly; at least one part of the atomization seat is arranged in the shell assembly; the atomization core is arranged on the atomization base, the atomization core comprises an ultrasonic atomization sheet assembly, the ultrasonic atomization sheet assembly is used for atomizing an aerosol generating substrate and is provided with a mist outlet area used for discharging aerosol, and the mist outlet area faces the top side of the atomizer; the bottom end of the air outlet channel is arranged around the mist outlet area in a covering mode, so that aerosol formed after atomization is discharged out of the shell assembly through the air outlet channel. According to the atomizer, the bottom end of the air outlet channel covers the periphery of the mist outlet area, used for discharging the aerosol, of the ultrasonic atomization piece assembly, so that the aerosol formed after atomization can be directly discharged out of the shell assembly through the air outlet channel to be used by a user, the flowing path of the aerosol is shortened, and therefore the loss of the aerosol is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic atomization, and in particular to an atomizer and an aerosol generating device. Background Art

[0002] The aerosol generating device generally includes an atomizer and a power supply assembly electrically connected to the atomizer. The atomizer can atomize the aerosol generating matrix stored in the liquid storage chamber under the electrical drive of the power supply assembly to form an aerosol for the user.

[0003] In the related art, when the aerosol formed after atomization is discharged, there will be a large aerosol loss, which affects the user experience. Summary of the invention

[0004] In view of this, the embodiments of the present disclosure provide a nebulizer and an aerosol generating device to reduce the loss of aerosol formed after atomization and improve the user experience.

[0005] The present disclosure provides an atomizer, the atomizer comprising:

[0006] A housing assembly, wherein an air outlet passage is formed in the housing assembly;

[0007] an atomizer seat, at least a portion of which is disposed within the housing assembly; and

[0008] An atomizing core is arranged on the atomizing seat, the atomizing core comprises an ultrasonic atomizing sheet assembly, the ultrasonic atomizing sheet assembly is used to atomize the aerosol generating matrix, the ultrasonic atomizing sheet assembly has a mist outlet area for discharging the aerosol, and the mist outlet area faces the top side of the atomizer;

[0009] Wherein, the bottom end cover of the air outlet channel is arranged around the mist outlet area, so that the aerosol formed after atomization is discharged from the shell component through the air outlet channel.

[0010] In some embodiments, the atomizer seat is formed with an air inlet channel, and a side wall at the bottom end of the air outlet channel is formed with at least one notch, and the air inlet channel and the air outlet channel are connected through the notch.

[0011] In some embodiments, the gas outlet channel extends linearly along the top and bottom directions of the atomizer.

[0012] In some embodiments, the length of the air outlet channel does not exceed 35 mm.

[0013] In some embodiments, the length of the air outlet channel is between 15 mm and 35 mm; and / or the equivalent diameter of the air outlet channel is between 2.5 mm and 5.0 mm.

[0014] In some embodiments, a liquid storage chamber is formed in the shell assembly, the liquid storage chamber is located on the top side of the atomizer seat, the air outlet channel is located in the middle area of ​​the liquid storage chamber, and the ultrasonic atomizer sheet assembly is arranged perpendicular to the top and bottom directions of the atomizer.

[0015] In some embodiments, the atomizer seat includes: an atomizer top seat, an atomizer base and a first sealing member, the atomizer base is located at the bottom side of the atomizer top seat, and the first sealing member is located at the top side of the atomizer top seat.

[0016] In some embodiments, a bottom surface of the first sealing member is formed with a plurality of protrusions;

[0017] The atomizing top seat is formed with a groove, and the ultrasonic atomizing sheet assembly is arranged in the groove;

[0018] The first sealing member abuts against the ultrasonic atomization sheet assembly via the convex point to fix the ultrasonic atomization sheet assembly in the groove.

[0019] In some embodiments, a spacing area is formed between the bottom surface of the first sealing member and the top surface of the ultrasonic atomization sheet assembly, and the convex point is located in the spacing area;

[0020] The atomizer top seat is formed with at least one connecting groove, and the atomizer base is formed with at least one air inlet hole. The connecting groove connects the air inlet hole and the spacing area. The air inlet hole, the connecting groove and the spacing area define at least a part of the air inlet channel.

[0021] In some embodiments, the nebulizer includes: a second seal, the second seal is formed with a first through hole, the hole wall of the first through hole is provided with an annular groove, the second seal surrounds the ultrasonic atomization sheet assembly, and the edge of the ultrasonic atomization sheet assembly is embedded in the annular groove.

[0022] In some embodiments, the ultrasonic atomization sheet assembly includes: a piezoelectric ceramic sheet and a microporous sheet;

[0023] The microporous sheet is stacked on the bottom side of the piezoelectric ceramic sheet and connected to the piezoelectric ceramic sheet. A second through hole is formed in the middle area of ​​the piezoelectric ceramic sheet. The microporous sheet is provided with micropores corresponding to the range of the second through hole.

[0024] In some embodiments, the atomizer seat is formed with a liquid inlet channel, the central area of ​​the microporous sheet protrudes toward one side of the liquid inlet channel to form a protrusion, and the micropores are arranged on the protrusion.

[0025] In some embodiments, the atomization core further includes: a liquid guiding member, which is located in the liquid inlet channel and abuts against the protrusion, and is used to guide the aerosol generating matrix to the ultrasonic atomization sheet assembly.

[0026] The present disclosure also provides an aerosol generating device, the aerosol generating device comprising:

[0027] Power supply components; and

[0028] The atomizer according to any one of the above embodiments,

[0029] The power supply assembly is electrically connected to the atomizer and is used to supply power to the atomizer.

[0030] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0031] The atomizer of the disclosed embodiment at least includes a shell assembly, an atomizer seat and an atomizer core. An air outlet channel is formed in the shell assembly, and the atomizer core includes an ultrasonic atomizer sheet assembly, which is used to atomize the aerosol generating matrix, and the ultrasonic atomizer sheet assembly has a mist outlet area for discharging the aerosol formed after atomization, and the bottom end cover of the air outlet channel is arranged around the mist outlet area, so that the aerosol formed after atomization can be directly discharged from the shell assembly through the air outlet channel for use by the user, shortening the flow path of the aerosol, reducing the possibility of condensation of the aerosol, thereby reducing the loss of the aerosol and improving the user's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of an aerosol generating device according to an exemplary embodiment;

[0033] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of the atomizer of the aerosol generating device shown;

[0034] Figure 3 yes Figure 2 A schematic cross-sectional view of an atomizer is shown;

[0035] Figure 4 yes Figure 2 The schematic diagram of the exploded structure of the atomizer top seat, atomizer base and atomizer core of the atomizer shown;

[0036] Figure 5 yes Figure 2 A schematic cross-sectional view of the cooperation between the atomizer seat and the atomizer core of the atomizer shown, wherein the arrow schematically shows the flow direction of the aerosol generating substrate;

[0037] Figure 6 yes Figure 2 A cross-sectional view of the atomizer seat and the atomizer core of the atomizer shown in another perspective, wherein the arrow schematically shows the flow direction of the external air;

[0038] Figure 7 yes Figure 2 A schematic structural diagram of a first sealing member of an atomizer shown;

[0039] Figure 8 yes Figure 2 The schematic diagram of the structure of the atomizer top seat of the atomizer shown;

[0040] Fig. 9 yes Figure 2 A schematic structural diagram of a second sealing member of the atomizer shown;

[0041] Fig.10 yes Figure 2 A schematic diagram of the exploded structure of the ultrasonic atomizer assembly of the atomizer shown;

[0042] Fig.11 yes Fig.10 A schematic structural diagram of the first micropore of the microporous sheet of the ultrasonic atomization sheet assembly shown;

[0043] Fig.12 yes Fig.10 A schematic diagram of the distribution of micropores on the microporous sheet of the ultrasonic atomization sheet assembly is shown.

[0044] Description of Reference Numerals

[0045] 1-shell assembly; 11-liquid storage chamber; 12-air outlet channel; 2-atomizer seat; 21-air inlet channel; 211-notch; 22-liquid inlet channel; 23-atomizer top seat; 231-liquid inlet hole; 232-groove; 233-connecting groove; 24-atomizer base; 241-air inlet hole; 25-first sealing member; 251-avoidance port; 252-convex point; 3-atomizer core; 31-ultrasonic atomizer sheet assembly; 31a-outlet Mist area; 311-piezoelectric ceramic plate; 311a-second through hole; 312-microporous plate; 32-liquid guide; 321-liquid guide groove; 4-second sealing member; 41-first through hole; 411-annular groove; 5-third sealing member; 6-micropore; 61-first micropore; 611-first mist outlet; 612-first liquid inlet; 62-second micropore; 7-protrusion; 10-atomizer; 100-aerosol generating device. DETAILED DESCRIPTION

[0046] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0047] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate a quantitative limitation, but indicate that there is at least one, and if only "one" is referred to, it will be separately described. "Multiple" or "several" means two or more. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation, and are not limited to one position or one spatial orientation. Similar words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0048] like Figure 1 As shown, an embodiment of the present disclosure provides an aerosol generating device 100, which includes the atomizer 10 according to any embodiment of the present disclosure and a power supply assembly (not shown in the figure).

[0049] The aerosol generating device 100 is used to atomize an aerosol generating substrate to generate an aerosol for use by a user. The aerosol generating substrate includes, but is not limited to, medicines, materials containing nicotine or materials not containing nicotine, etc. In the embodiment of the present disclosure, the aerosol generating substrate can be, for example, a liquid material with plants (such as tobacco, etc.) as the main raw material and with corresponding aerosol formers and aroma materials added.

[0050] The power supply assembly is electrically connected to the atomizer 10 for supplying power to the atomizer 10. In the embodiment of the present disclosure, the power supply assembly is electrically connected to the atomizer 10 in a detachable mounting manner, so that subsequent replacement and maintenance can be facilitated.

[0051] Those skilled in the art should understand that the disclosed embodiment does not specifically limit the type of aerosol generating device 100. For example, the aerosol generating device 100 may be a medical atomizing device, an air humidifier, or an electronic cigarette or other device that requires the use of an atomizer 10.

[0052] like Figure 2 and Figure 3 As shown, the embodiment of the present disclosure provides an atomizer 10. The atomizer 10 includes a housing assembly 1, an atomizer seat 2 and an atomizer core 3.

[0053] The housing assembly 1 is the outer housing of the atomizer 10, and a liquid storage chamber 11 and an air outlet channel 12 are formed inside. At least a portion of the atomizer seat 2 is disposed in the housing assembly 1. The liquid storage chamber 11 is used to store the aerosol generating substrate. In the disclosed embodiment, the liquid storage chamber 11 is located on the top side of the atomizer seat 2, the top of the atomizer seat 2 and the inner side wall of the housing assembly 1 define the liquid storage chamber 11, the air outlet channel 12 is located in the middle area of ​​the housing assembly 1, and the liquid storage chamber 11 is arranged around the air outlet channel 12.

[0054] Exemplarily, at least a portion of the atomizer seat 2 is disposed in the housing assembly 1 , which may mean that part of the structure of the atomizer seat 2 is disposed in the housing assembly 1 , or the entire structure of the atomizer seat 2 is disposed in the housing assembly 1 .

[0055] The atomizing core 3 is used to absorb the aerosol generating substrate and atomize the aerosol generating substrate. The atomizing core 3 is arranged on the atomizing seat 2 and includes an ultrasonic atomizing sheet assembly 31, which is arranged perpendicular to the top and bottom direction of the atomizer 10. The ultrasonic atomizing sheet assembly 31 can convert electrical energy into vibration energy, thereby generating ultrasonic waves through vibration, and atomizing the aerosol generating substrate in an ultrasonic atomization manner, thereby forming an aerosol for the user to use.

[0056] Taking electronic cigarettes as an example, compared with the traditional heating without burning method, the ultrasonic atomization method adopted in the embodiment of the present disclosure has a lower atomization temperature, so the release of aldehydes and ketones in the aerosol generating matrix is ​​lower, which reduces the release of harmful substances in the aerosol generating matrix, has better safety performance, and thus reduces harm.

[0057] like Fig.10 As shown, in the embodiment of the present disclosure, the ultrasonic atomizer sheet assembly 31 is generally circular, and has a diameter between 10 mm and 15 mm (millimeters), preferably between 12 mm and 14 mm. The circular ultrasonic atomizer sheet assembly 31 has smooth edges and no protruding sharp corners, which can reduce stress concentration and thus reduce the occurrence of damage to the ultrasonic atomizer sheet assembly 31.

[0058] Of course, in some other embodiments, the ultrasonic atomization sheet assembly 31 may also be in any other suitable shape.

[0059] Exemplarily, the diameter of the ultrasonic atomizer sheet assembly 31 may be 10 mm, 11 mm, 12 mm, 13 mm, 14 mm or 15 mm, etc. The moderate diameter of the ultrasonic atomizer sheet assembly 31 can ensure that a sufficient amount of aerosol is formed by atomization, and can also avoid the situation where the ultrasonic atomizer sheet assembly 31 is too large and is not conducive to assembly to the nebulizer.

[0060] like Figure 3 As shown, the ultrasonic atomizer sheet assembly 31 has a mist outlet area 31a for discharging aerosol, and the mist outlet area 31a faces the top side of the nebulizer 10. The bottom end cover of the air outlet channel 12 is arranged around the mist outlet area 31a, so that the aerosol formed after atomization is discharged from the shell assembly 1 through the air outlet channel 12 for use by the user.

[0061] In the related art, the atomizer is usually formed with an atomizing chamber, which is connected to the air outlet channel. The aerosol formed after atomization must first flow through the atomizing chamber, then flow through the air outlet channel, and finally be discharged to the outside of the atomizer. The flow path of the aerosol is relatively long, which will increase the possibility of condensation of the aerosol, thereby causing a large loss of aerosol. Among them, the atomizing chamber usually includes a top wall, a bottom wall and a side wall. There will be a corner at the connection between the side wall and the top wall and the bottom wall, which will increase the collision frequency between the aerosol and the various wall surfaces of the atomizing chamber, and the aerosol is more likely to condense at the corner. Therefore, it may further increase the loss of aerosol, which is not conducive to the user experience.

[0062] In the embodiment of the present disclosure, the bottom end of the air outlet channel 12 is directly covered around the mist outlet area 31a of the ultrasonic atomizer sheet assembly 31, and the mist outlet area 31a is facing the top side of the nebulizer 10, so that the aerosol formed after the ultrasonic atomizer sheet assembly 31 atomizes the aerosol generating matrix will not flow through other areas, and can be directly discharged from the shell assembly 1 through the air outlet channel 12 upward. This can reduce the length of the flow path of the aerosol formed after atomization, reduce the frequency of aerosol collisions, and enable the aerosol to be discharged from the shell assembly 1 faster for user use. At the same time, it reduces the possibility of aerosol condensation, reduces the loss of aerosol, prevents the reduction of fragrance and concentration due to excessive loss of aerosol, and improves the user experience.

[0063] In addition, in this upward atomization mode, the aerosol generating matrix needs to be pumped upward to the air outlet channel 12 against gravity under the action of the vibration of the ultrasonic atomization sheet assembly 31. In this way, when the atomizer 10 is not in a working state, that is, when the ultrasonic atomization sheet assembly 31 is not vibrating, the aerosol generating matrix in the liquid storage chamber 11 is difficult to enter the air outlet channel 12 through the ultrasonic atomization sheet assembly 31, thereby reducing the possibility of leakage. At the same time, the aroma of the aerosol generating matrix in the liquid storage chamber 11 can be well retained.

[0064] Since the bottom end of the air outlet channel 12 is directly covered around the mist outlet area 31a of the ultrasonic atomization sheet assembly 31, the processing difficulty of the atomizer 10 can be reduced, the production cost can be reduced, and at the same time, it is conducive to the miniaturization and integration of the atomizer 10.

[0065] like Figure 5 and Figure 6 As shown, the atomizer seat 2 is formed with an air inlet channel 21 and a liquid inlet channel 22, the air inlet channel 21 is connected to the outside, and the liquid inlet channel 22 is connected to the liquid storage chamber 11. Figure 3 As shown, at least one notch 211 is formed on the side wall of the bottom end of the air outlet channel 12, and the air inlet channel 21 and the air outlet channel 12 are connected through the notch 211. The aerosol-generating matrix in the liquid storage chamber 11 flows to the ultrasonic atomization sheet assembly 31 through the liquid inlet channel 22 for ultrasonic atomization, and the aerosol formed after atomization is discharged to the air outlet channel 12 through the mist outlet area 31a, and the aerosol in the air outlet channel 12 is discharged together with the air flowing in from the air inlet channel 21 to the outside of the housing assembly 1 for use by the user.

[0066] In the disclosed embodiment, there are multiple (more than two) notches 211, and the multiple notches 211 are arranged at intervals along the circumferential direction of the air outlet channel 12. The multiple notches 211 can allow more air to enter the air outlet channel 12, thereby making the flow of aerosol smoother.

[0067] Those skilled in the art should understand that the embodiment of the present disclosure does not specifically limit the number and shape of the notches 211 , and can be specifically set according to the actual size of the air outlet channel 12 .

[0068] In some embodiments, at least one through hole may be formed on the side wall of the air outlet channel 12, and the air inlet channel 21 and the air outlet channel 12 are connected through the through hole.

[0069] In the disclosed embodiment, the air outlet channel 12 extends in a straight line along the top and bottom direction of the atomizer 10. The straight air outlet channel 12 has a simple structure and is easy to process. At the same time, the air flow resistance is small. In addition, the straight air outlet channel 12 does not have a corner, which can reduce the possibility of collision between the aerosol and the airway wall of the air outlet channel 12, thereby reducing the loss of aerosol caused by aerosol condensation and improving the user experience.

[0070] In the embodiment of the present disclosure, the length of the air outlet channel 12 does not exceed 35 mm. Preferably, the length of the air outlet channel 12 is between 15 mm and 35 mm.

[0071] In the related art, when the aerosol generating substrate is atomized by heating atomization, the length of the air outlet channel of the atomizer needs to be set longer, so as to reduce the temperature of the aerosol and prevent the user from being burned by the aerosol being too hot when using it. However, a longer air outlet channel will increase the possibility of condensation of the aerosol, especially when the viscosity of the aerosol generating substrate is low, the aerosol formed after atomization is more likely to condense, resulting in a larger loss of aerosol.

[0072] Since the embodiment of the present disclosure adopts ultrasonic atomization to atomize the aerosol generating matrix, there is no problem of excessive aerosol temperature. Therefore, the length of the air outlet channel 12 can be shortened, thereby reducing the length of the movement path of the aerosol formed after atomization and the frequency of collision between the aerosol and the airway wall, thereby reducing the loss of aerosol caused by condensation and improving the user experience.

[0073] In addition, shortening the length of the air outlet channel 12 is also beneficial to the miniaturization of the atomizer 10 as a whole.

[0074] Exemplarily, the length of the air outlet channel 12 can be 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm or 35mm, etc.

[0075] In the embodiment of the present disclosure, the equivalent diameter of the air outlet channel 12 is between 2.5 mm and 5.0 mm. The equivalent diameter refers to the diameter of a circle with the same cross-sectional area. In the embodiment of the present disclosure, when the cross-sectional shape of the air outlet channel 12 is a circle, the equivalent diameter of the air outlet channel 12 is the diameter of the circle.

[0076] For example, the equivalent diameter of the air outlet channel 12 may be 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm or 5 mm, etc. The equivalent diameter of the air outlet channel 12 is moderate, which can ensure the smooth flow of a sufficient amount of aerosol and facilitate the miniaturization and integration of the atomizer 10.

[0077] In the disclosed embodiment, the ultrasonic atomizer sheet assembly 31 is disposed in the atomizer seat 2. Compared with the aerosol mist output when the ultrasonic atomizer sheet assembly 31 is bare, the ultrasonic atomizer sheet assembly 31 is fixed in the atomizer seat 2. The aerosol formed after the aerosol generation matrix is ​​atomized will have a certain clamping loss, and when the aerosol flows through the air outlet channel 12 and is finally discharged outside the housing assembly 1, there will also be a certain airway loss. The clamping loss will be described in detail later.

[0078] Table 1 shows the experimental results obtained after testing the aerosol mist output using the structure of the air outlet channel 12 in the above embodiment. The specific parameters of the ultrasonic atomizer assembly used in the experiment are: diameter 14 mm, thickness 0.78 mm, operating frequency 130 kHz, operating voltage 80 Vpp, and maximum central vibration area 1.5 mm.

[0079] Examples 1-1 to 1-5 are respectively about adding test media of different viscosities into the ultrasonic atomization sheet assembly to obtain the clamped mist output and the airway mist output.

[0080] The clamped mist output refers to the mist output of the aerosol formed after ultrasonic atomization through the ultrasonic atomizer sheet assembly 31 fixedly arranged on the atomizer seat 2. The airway mist output refers to the mist output of the aerosol formed after atomization when it flows through the air outlet channel 12 and finally discharges from the housing assembly 1. The airway loss is defined as: airway loss = 100 × (clamped mist output - airway mist output) / clamped mist output.

[0081] Table 1 Airway loss of ultrasonic nebulizer assembly

[0082]

[0083] The unit mg / puff is milligrams per three seconds.

[0084] In the related art, the airway loss of aerosol after flowing through the air outlet channel is usually about 20%. However, it can be seen from Table 1 that with the structure of the air outlet channel 12 of the embodiment of the present disclosure, the maximum airway loss is only about 10%, which effectively reduces the loss of aerosol and ensures the aerosol mist output.

[0085] like Figures 2 to 6As shown, the atomizer seat 2 includes an atomizer top seat 23 , an atomizer base 24 and a first sealing member 25 . The atomizer base 24 is located at the bottom side of the atomizer top seat 23 , and the first sealing member 25 is located at the top side of the atomizer top seat 23 .

[0086] The atomizer top seat 23 is detachably connected to the atomizer base 24, and the first sealing member 25 is also detachably connected to the atomizer top seat 23. The detachable connection method includes but is not limited to a threaded connection method, a magnetic attraction method, or a clamping method.

[0087] like Figure 3 and Figure 4 As shown, a liquid inlet hole 231 is formed on the atomizing top seat 23 , and the liquid inlet hole 231 communicates with the liquid storage cavity 11 and the liquid inlet channel 22 .

[0088] Exemplarily, the number of liquid inlet holes 231 on the atomizer top seat 23 is multiple, that is, the number of liquid inlet channels 22 in the atomizer seat 2 is multiple, and each liquid inlet channel 22 is connected to a different position of the liquid storage chamber 11. In this way, the aerosol generating matrix at different positions in the liquid storage chamber 11 can be quickly guided to the atomizer core 3 through multiple liquid inlet holes 231 and multiple liquid inlet channels 22, so that the liquid of the aerosol generating matrix is ​​smoother, so that rapid atomization can be achieved to meet the user's use needs. In addition, it can also avoid the situation where one of the liquid inlet channels 22 is blocked, resulting in no aerosol generating matrix being transmitted to the atomizer core 3, thereby avoiding the situation where the atomizer core 3 is dry-burned and damaged, and improving the service life of the atomizer core 3.

[0089] In the disclosed embodiment, there are two liquid inlet holes 231, which are respectively located on two obliquely opposite sides of the atomizing top seat 23. That is, two liquid inlet channels 22 are formed in the atomizing seat 2, and the two liquid inlet channels 22 communicate with the liquid storage chamber 11 at different positions.

[0090] Of course, in some other embodiments, the number of the liquid inlet hole 231 and the liquid inlet channel 22 may be only one, or more (more than two). The disclosed embodiment does not specifically limit the number of the two, and can be specifically set according to the size of the atomizer 10 and the difficulty of processing.

[0091] The first seal 25 is used to seal the liquid storage chamber 11, and is formed with a clearance opening 251 for avoiding the liquid inlet 231. The first seal 25 can be made of materials such as silicone, and the material of the first seal 25 is not specifically limited in the embodiment of the disclosure.

[0092] like Figure 7 and Figure 8As shown, a plurality of protrusions 252 are formed on the bottom surface of the first seal 25, a groove 232 is formed on the atomizing top seat 23, and the ultrasonic atomizing sheet assembly 31 is arranged in the groove 232. The first seal 25 abuts against the ultrasonic atomizing sheet assembly 31 through the protrusions 252 to fix the ultrasonic atomizing sheet assembly 31 in the groove 232.

[0093] When the ultrasonic atomizer sheet assembly 31 is arranged on the atomizer seat 2, it is necessary to fix the ultrasonic atomizer sheet assembly 31. In the related art, the ultrasonic atomizer sheet assembly is usually clamped between the atomizer top seat and the atomizer base, and the contact area between the clamping surface and the ultrasonic atomizer sheet assembly is large, which will affect the vibration of the ultrasonic atomizer sheet assembly to a certain extent, thereby affecting the atomization effect of the ultrasonic atomizer sheet assembly.

[0094] The ultrasonic atomizer sheet assembly 31 of the embodiment of the present disclosure is fixed between the atomizer top seat 23 and the first seal 25, and the first seal 25 abuts against the ultrasonic atomizer sheet assembly 31 through the protrusion 252. In this way, while achieving fixation, the contact area between the first seal 25 and the ultrasonic atomizer sheet assembly 31 can be reduced, thereby reducing the impact on the operation of the ultrasonic atomizer sheet assembly 31, so that the ultrasonic atomizer sheet assembly 31 can achieve a better atomization effect.

[0095] In the embodiment of the present disclosure, the convex point 252 may be, for example, cylindrical. In some other embodiments, the convex point 252 may also be, for example, annular. The embodiment of the present disclosure does not specifically limit the shape of the convex point 252, as long as the contact area with the ultrasonic atomization sheet assembly 31 can be reduced and the ultrasonic atomization sheet assembly 31 can be fixed.

[0096] The convex point 252 and the first sealing member 25 form an integrated structure, both of which are made of flexible materials such as silicone, so that the soft positioning of the ultrasonic atomization sheet assembly 31 can be achieved, further reducing the impact on the function of the ultrasonic atomization sheet assembly 31. In addition, the integrated structure can reduce the number of parts and components and reduce the difficulty of assembly. Of course, in some other embodiments, the convex point 252 and the first sealing member 25 can also be assembled as a split structure.

[0097] like Figure 7 As shown, a plurality of protrusions 252 are evenly and spaced apart on the bottom surface of the first seal 25, and the arrangement shape is generally circular, which is compatible with the shape of the ultrasonic atomization sheet assembly 31. In this way, while reducing the contact area, the ultrasonic atomization sheet assembly 31 can be better fixed, reducing the occurrence of flipping, displacement, etc. of the ultrasonic atomization sheet assembly 31. In some other embodiments, when the ultrasonic atomization sheet assembly 31 is in other shapes, the arrangement shape of the plurality of protrusions 252 can also be changed accordingly. The disclosed embodiment does not specifically limit the number and arrangement shape of the protrusions 252.

[0098] The groove 232 can play a certain role in limiting the ultrasonic atomization sheet assembly 31, and better fix the ultrasonic atomization sheet assembly 31. In addition, it is easy to position the ultrasonic atomization sheet assembly 31 during assembly, thereby reducing the difficulty of assembly and reducing production costs.

[0099] Table 2 shows the experimental results of the aerosol mist output test after fixing the ultrasonic atomizer sheet assembly 31 with the convex point 252 structure in the above embodiment. The specific parameters of the ultrasonic atomizer sheet assembly used in the experiment are: diameter 14 mm, thickness 0.78 mm, operating frequency 130 kHz, operating voltage 80 Vpp, and maximum central vibration area 1.5 mm.

[0100] Examples 2-1 to 2-5 are respectively the bare chip mist output and the clamped mist output obtained after adding test media of different viscosities to the ultrasonic atomization sheet assembly.

[0101] The bare chip mist output refers to the aerosol mist output formed by ultrasonic vibration of the ultrasonic atomizer sheet assembly 31 when the ultrasonic atomizer sheet assembly 31 is placed horizontally on the experimental platform and kept suspended without any clamping and fixing. The clamped mist output refers to the aerosol mist output formed by ultrasonic atomization of the ultrasonic atomizer sheet assembly 31 fixed to the atomizer seat 2 via the above-mentioned convex point 252. The clamping loss is defined as: clamping loss = 100 × (bare chip mist output - clamping mist output) / bare chip mist output.

[0102] Table 2 Clamping loss of ultrasonic atomizer assembly

[0103]

[0104] It can be seen from Table 2 that by using the convex point 252 structure of the embodiment of the present disclosure to fix the ultrasonic atomizer sheet assembly 31, the maximum clamping loss is only about 10%, which can effectively reduce the clamping loss and ensure the aerosol mist output.

[0105] like Figure 6 As shown, the arrows in the figure indicate the flow direction of the air. A spacing area A is formed between the bottom surface of the first seal 25 and the top surface of the ultrasonic atomization sheet assembly 31, and the convex point 252 is located in the spacing area A. The atomization top seat 23 is formed with at least one connecting groove 233, and the atomization base 24 is formed with at least one air inlet hole 241, and the connecting groove 233 connects the air inlet hole 241 and the spacing area A, and the air inlet hole 241, the connecting groove 233 and the spacing area A define at least a portion of the air inlet channel 21.

[0106] Exemplarily, the number of the air inlet holes 241 can be multiple, and the number of the connecting grooves 233 can also be multiple, so as to be connected with the multiple air inlet holes 241 respectively, thereby forming multiple air inlet channels 21, so that more air can quickly enter the atomizer 10 through the multiple air inlet channels 21, thereby making the flow of the aerosol smoother.

[0107] The embodiment of the present disclosure does not specifically limit the number of the air inlet holes 241 and the connecting grooves 233 , and the number of the air inlet holes 241 and the connecting grooves 233 may be one, two or more.

[0108] like Fig. 9 As shown, the nebulizer 10 includes a second seal 4, which is formed with a first through hole 41, and the hole wall of the first through hole 41 is provided with an annular groove 411. The second seal 4 surrounds the ultrasonic atomization sheet assembly 31, and the edge of the ultrasonic atomization sheet assembly 31 is embedded in the annular groove 411.

[0109] The second sealing member 4 substantially wraps the ultrasonic atomization sheet assembly 31 , and can prevent the leaked aerosol-generating matrix from affecting the performance and atomization effect of the ultrasonic atomization sheet assembly 31 in the event of liquid leakage.

[0110] like Figure 2 and Figure 6 As shown, the atomizer 10 includes a third sealing member 5, which is located between the atomizer top seat 23 and the atomizer base 24, and surrounds the connection position between the atomizer top seat 23 and the atomizer base 24, so as to prevent the leaked aerosol generating matrix from flowing to the power supply assembly through the atomizer base 24 and causing damage to the power supply assembly in the event of leakage.

[0111] The second sealing member 4 and the third sealing member 5 may also be made of materials such as silicone, and the disclosed embodiment does not specifically limit the materials of the second sealing member 4 and the third sealing member 5 .

[0112] like Fig.10 As shown, the ultrasonic atomization sheet assembly 31 includes a piezoelectric ceramic sheet 311 and a microporous sheet 312, the microporous sheet 312 is stacked on the bottom side of the piezoelectric ceramic sheet 311 and connected to the piezoelectric ceramic sheet 311, the middle area of ​​the piezoelectric ceramic sheet 311 is formed with a second through hole 311a, the microporous sheet 312 is formed with micropores 6, the micropores 6 are arranged at the part of the microporous sheet 312 located within the range of the second through hole 311a, and the area of ​​the microporous sheet 312 formed with the micropores 6 constitutes the mist outlet area 31a. When the atomizer 10 is in working state, the piezoelectric ceramic sheet 311 will produce mechanical deformation with the change of voltage and frequency, so that the aerosol generating matrix of the liquid inlet channel 22 is atomized during the vibration process and then pumped to the gas outlet channel 12 through the micropores 6 on the microporous sheet 312.

[0113] For example, the microporous sheet 312 may be bonded to the bottom side of the piezoelectric ceramic sheet 311 by a conductive adhesive.

[0114] In the embodiment of the present disclosure, the thickness of the piezoelectric ceramic sheet 311 is between 0.4 mm and 0.8 mm.

[0115] Exemplarily, the thickness of the piezoelectric ceramic sheet 311 may be 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm or 0.8 mm, etc. The moderate thickness of the piezoelectric ceramic sheet 311 can ensure a good atomization effect while not occupying too much space in the atomizer 10, which is conducive to the miniaturization of the device.

[0116] The material of the piezoelectric ceramic sheet 311 may be, for example, lead zirconate titanate, barium carbonate, or potassium sodium niobate. Of course, in some other embodiments, the piezoelectric ceramic sheet 311 may also be made of any other suitable material.

[0117] In the embodiment of the present disclosure, the diameter of the area where the micropores 6 are formed on the microporous sheet 312 is between 1 mm and 4 mm.

[0118] For example, the diameter of the area where the micropores 6 are formed on the microporous sheet 312 may be 1 mm, 2 mm, 3 mm, or 4 mm.

[0119] In the disclosed embodiment, the thickness of the microporous sheet 312 is between 0.02 mm and 0.1 mm.

[0120] For example, the thickness of the microporous sheet 312 may be 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm or 0.1 mm, etc. The microporous sheet 312 has a moderate thickness so as not to affect the ultrasonic vibration of the piezoelectric ceramic sheet 311 .

[0121] The material of the microporous sheet 312 can be, for example, stainless steel, nickel-cobalt alloy, titanium alloy, copper alloy, palladium-nickel alloy or one of them. These materials have high hardness, so that the microporous sheet 312 can maintain its shape well and is not easily deformed even if it vibrates together with the piezoelectric ceramic sheet 311.

[0122] Of course, in some other embodiments, the microporous sheet 312 may also be made of any other suitable material.

[0123] In the embodiment of the present disclosure, the number of micropores 6 is between 500 and 4000, and the spacing distance between any two adjacent micropores 6 is between 40 μm and 100 μm (micrometers).

[0124] For example, the number of microholes 6 may be 500, 1000, 1500, 2000, 2500, 3000, 3500 or 4000, etc. The spacing distance between two microholes 6 may be 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm or 100 μm, etc.

[0125] The number and spacing of the micropores 6 of the microporous sheet 312 are moderate, which can not only ensure the smooth pumping and atomization of the aerosol generating matrix, but also reduce the volatilization of the aroma of the aerosol generating matrix when the atomizer 10 is not working, thereby reducing the possibility of leakage.

[0126] In the disclosed embodiment, the micropores 6 on the microporous sheet 312 are formed by a laser drilling process. The laser drilling process has high precision, high speed, high flexibility and adaptability, and can realize the processing of holes of various shapes and sizes. In addition, the laser drilling process is a non-contact processing method, which will not cause mechanical damage to the structure to be punched, and can ensure the integrity and quality of the structure.

[0127] Of course, in some other embodiments, any other suitable punching process such as electroforming punching, etching punching, etc. may be used to process the micro-holes 6 .

[0128] In the related art, taking electronic cigarettes as an example, the particle size of the aerosol formed after ultrasonic atomization of the aerosol generating matrix by ultrasonic vibration is usually large, and too much large-particle aerosol will lead to a large local concentration of nicotine, thereby bringing high irritation and affecting the user's experience. In particular, when water is used to replace PG / VG (propylene glycol / glycerol) as the main medium of the aerosol generating matrix, the irritation to the throat will be greater. Therefore, the particle size of the aerosol formed after atomization usually needs to be less than 2.5μm to bring a better suction experience to the user. The particle size of the aerosol formed after the aerosol generating matrix is ​​atomized by heating in a traditional way can easily reach this particle size range, but when the heating temperature is too high, it is easy to cause the propylene glycol and glycerol as the medium in the aerosol generating matrix to crack, thereby producing some harmful substances. In addition, the conductive heating structure that realizes heating in the atomization core often works at high temperatures, which will accelerate the precipitation of some heavy metals, which may bring certain harm to the user. The use of low-temperature atomization method such as ultrasonic vibration can effectively avoid the occurrence of the above situation. However, in the related art, the particle size of the aerosol formed after atomizing the aerosol generating matrix by ultrasonic vibration is usually large, and it is difficult to reach the above particle size range, thereby affecting the user's smoking experience.

[0129] In view of this, the structure of the micropore 6 is improved in the embodiment of the present disclosure. Fig.11As shown, the micropores 6 include first micropores 61, and the first micropores 61 are formed with first mist outlets 611 on the surface of the micropore sheet 312 facing the piezoelectric ceramic sheet 311, and the aperture of the first mist outlet 611 does not exceed 2.0 μm. Preferably, the aperture of the first mist outlet 611 is between 1.1 μm and 2.0 μm.

[0130] Exemplarily, the aperture of the first mist outlet 611 may be 1.1 μm, 1.2 μm, 1.3 μm, 1.4 μm, 1.5 μm, 1.6 μm, 1.7 μm, 1.8 μm, 1.9 μm or 2.0 μm, etc.

[0131] Table 3 shows the experimental results obtained after ultrasonic atomization test of bare chip using microporous sheet 312 with different apertures of first mist outlet 611. Among them, the specific parameters of the ultrasonic atomization sheet assembly used in the experiment are: diameter 14mm, thickness 0.78mm, operating frequency 130kHz, operating voltage 80Vpp, maximum central vibration area 1.5mm, medium viscosity 4cP (centipoise). The specific parameters of the microporous sheet of the ultrasonic atomization sheet assembly are: diameter 14mm, thickness 0.05mm, perforated area 2mm, first liquid inlet aperture 40μm, number of micropores 2000, and through-porosity 85%.

[0132] Table 3 Aerosol particle sizes corresponding to different first mist outlet apertures of microporous sheets

[0133] serial number The first mist outlet aperture / μm Aerosol particle size / μm Example 3-1 1.1 1.5 Example 3-2 1.2 1.7 Example 3-3 1.4 1.9 Embodiment 3-4 1.6 2.1 Embodiment 3-5 1.7 2.2 Embodiment 3-6 1.8 2.3 Embodiment 3-7 2.0 2.5 Comparative Example 3-1 2.5 3.0

[0134] It can be seen from Table 3 that when the aperture of the first mist outlet 611 does not exceed 2.0 μm, the maximum particle size of the aerosol formed after atomization does not exceed 2.5 μm. Therefore, by improving the aperture of the mist outlet of the micropores 6 on the microporous sheet 312, the particle size of the aerosol formed after atomization can be reduced, thereby improving the user experience.

[0135] In addition, when the atomizer 10 is not in working state, the aperture of the first mist outlet 611 is moderate, which can also reduce the volatilization of the aroma of the aerosol generating matrix and reduce the possibility of leakage, thereby further improving the user experience.

[0136] However, when the aperture of the mist outlet becomes smaller, the mist outlet area will also become smaller, thereby reducing the amount of aerosol mist output. The nebulizer 10 does not have enough mist output, which will also affect the user's experience. Usually, the amount of aerosol formed after the ultrasonic atomizer sheet assembly 31 is atomized will also be affected by the clamping loss and airway loss. Therefore, the amount of aerosol formed when the ultrasonic atomizer sheet assembly 31 is bare is at least greater than 8 mg / puff, preferably greater than 10 mg / puff, to ensure that the amount of aerosol finally discharged from the nebulizer 10 can meet the user's usage needs.

[0137] In order to simultaneously meet the requirements of small aerosol particle size and sufficient aerosol mist output, the disclosed embodiment further improves the structure of the first micropore 61. The first micropore 61 forms a first liquid inlet 612 on the surface of the microporous sheet 312 away from the piezoelectric ceramic sheet 311, and the pore size of the first liquid inlet 612 is preferably between 20 μm and 50 μm.

[0138] For example, the pore size of the first liquid inlet 612 may be 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm or 50 μm, etc.

[0139] Table 4 shows the experimental results obtained after ultrasonic atomization test of bare chip using microporous sheet 312 with a first mist outlet 611 aperture of 1.7μm and different first liquid inlet 612 apertures. Among them, the specific parameters of the ultrasonic atomization sheet assembly used in the experiment are: diameter 14mm, thickness 0.78mm, operating frequency 130kHz, operating voltage 80Vpp, center maximum vibration area 1.5mm, medium viscosity 4cP. The specific parameters of the microporous sheet of the ultrasonic atomization sheet assembly are: diameter 14mm, thickness 0.05mm, perforated area 2mm, first mist outlet aperture 1.7μm, number of micropores 2000, and through-porosity 85%.

[0140] Table 4 The amount of fog corresponding to the different first liquid inlet apertures of the microporous sheet

[0141] serial number The first liquid inlet aperture / μm Mist output / (mg / puff) Example 4-1 10 9.3 Example 4-2 20 10.8 Example 4-3 30 12.5 Example 4-4 40 14.0 Embodiment 4-5 50 13.2 Embodiment 4-6 60 12.9 Embodiment 4-7 70 12.4

[0142] It can be seen from Table 4 that when the aperture of the first liquid inlet 612 is between 20 μm and 50 μm, the aerosol mist output is above 8 mg / puff. And as the aperture of the first liquid inlet 612 increases, the aerosol mist output first increases and then decreases. Among them, when the aperture of the first liquid inlet 612 is 40 μm, the aerosol mist output is the largest.

[0143] The disclosed embodiment improves the apertures of the first mist outlet 611 and the first liquid inlet 612 of the first micropore 61, so that the aperture of the first mist outlet 611 does not exceed 2 μm, and is preferably between 1.1 μm and 2 μm, and the aperture of the first liquid inlet 612 is preferably between 20 μm and 50 μm. This allows the particle size of the aerosol formed after the ultrasonic atomization sheet assembly 31 is atomized to be small enough while ensuring a sufficient amount of aerosol output, thereby greatly improving the user experience.

[0144] In the embodiment of the present disclosure, the shape of the first micropore 61 may be conical, rectangular or cylindrical. As long as the apertures of the first mist outlet 611 and the first liquid inlet 612 of the first micropore 61 meet the above aperture range, the first micropore 61 may be any other suitable shape.

[0145] like Fig.11 As shown, preferably, the shape of the first micropore 61 is conical, so that when the aerosol generating substrate is squeezed and discharged through the conical first micropore 61, the closer it is to the mist outlet area 31a, the more it will be squeezed, so that the particle size of the aerosol finally discharged through the first mist outlet 611 is smaller and the discharge speed is faster.

[0146] In the embodiment of the present disclosure, the vibration frequency of the ultrasonic atomizer assembly 31 during operation is between 100kHz and 180kHz (kilohertz), the effective electromechanical coupling coefficient is greater than 0.38, the resonant impedance is less than 50Ω (ohms), and the driving voltage is between 60Vpp and 120Vpp (peak-to-peak value).

[0147] Exemplarily, the vibration frequency of the ultrasonic atomizer sheet assembly 31 may be 100 kHz, 110 kHz, 120 kHz, 130 kHz, 140 kHz, 150 kHz, 160 kHz, 170 kHz or 180 kHz, etc.

[0148] Table 5 shows the experimental results obtained after the ultrasonic atomization test of the bare chip by using different vibration frequencies for the ultrasonic atomization sheet assembly 31. Among them, the specific parameters of the ultrasonic atomization assembly used in the experiment are: diameter 14mm, thickness 0.78mm, working voltage 80Vpp, center maximum vibration area 1.5mm, medium viscosity 4cP. The specific parameters of the microporous sheet of the ultrasonic atomization sheet assembly are: diameter 14mm, thickness 0.05mm, perforation area 2mm, first mist outlet aperture 1.7μm, first liquid inlet aperture 40μm, number of micropores 2000, and through-hole rate 85%.

[0149] Table 5 The amount of mist produced by different vibration frequencies of ultrasonic atomizer components

[0150]

[0151]

[0152] It can be seen from Table 5 that when the vibration frequency of the ultrasonic atomizer sheet assembly 31 is 104kHz, 123kHz, 130kHz and 165kHz, the mist output of the aerosol formed after atomization can be guaranteed to be above 8mg / puff. In other words, the vibration frequency of the ultrasonic atomizer sheet assembly 31 is moderate, which can ensure that the mist output of the aerosol formed after atomization can meet the user's usage needs and improve the user's usage experience.

[0153] In addition to the parameters of the ultrasonic atomizer assembly 31 itself, the medium viscosity of the aerosol generating matrix will also affect the mist output of the aerosol formed after atomization.

[0154] Table 6 shows the experimental results obtained after ultrasonic atomization test of bare chips at room temperature of 25°C using aerosol generating matrices with different medium viscosities. Among them, the specific parameters of the ultrasonic atomization component used in the experiment are: diameter 14mm, thickness 0.78mm, working voltage 80Vpp, working frequency 130kHz, and center maximum vibration area 1.5mm. The specific parameters of the microporous sheet of the ultrasonic atomization sheet assembly are: diameter 14mm, thickness 0.05mm, perforation area 2mm, first mist outlet aperture 1.7μm, first liquid inlet aperture 40μm, number of micropores 2000, and through-porosity 85%.

[0155] Table 6 The amount of fog corresponding to different medium viscosities

[0156] serial number Medium viscosity / cP Mist output / (mg / puff) Example 6-1 1.0 18.3 Example 6-2 2.2 16.5 Example 6-3 4.0 14.0 Example 6-4 6.5 12.0 Example 6-5 7.5 9.9 Example 6-6 8.4 9.2 Embodiment 6-7 10.0 8.1 Comparative Example 6-1 14.8 5.5 Comparative Example 6-2 21.7 1.3

[0157] It can be seen from Table 6 that when the medium viscosity is less than or equal to 10 cP, the aerosol mist output can be guaranteed to be above 8 mg / puff. Therefore, the embodiment of the present disclosure preferably uses low-viscosity media such as water and ethanol as the medium main body of the aerosol generating matrix. However, those skilled in the art should understand that the embodiment of the present disclosure does not specifically limit the medium viscosity of the aerosol generating matrix used.

[0158] For example, when the medium viscosity of some aerosol generating substrates is high, the medium viscosity can be reduced by preheating before the aerosol generating substrates reach the ultrasonic atomization sheet assembly 31, thereby ensuring the mist output of the aerosol formed after the final atomization.

[0159] Taking the aerosol generating device as an example, an electronic cigarette, too much large-particle aerosol will bring high irritation to the user, which is not conducive to the user's smoking experience. However, a small amount of large-particle aerosol will increase the sweetness and aroma, thereby further improving the taste.

[0160] In the disclosed embodiment, the micropores 6 formed on the microporous sheet 312 further include second micropores 62, which form a second mist outlet on the surface of the microporous sheet 312 on the side facing the piezoelectric ceramic sheet 311, and the aperture of the second mist outlet is between 5 μm and 20 μm. In order to ensure sufficient aerosol mist output, the second micropores 62 form a second liquid inlet on the surface of the microporous sheet 312 on the side facing away from the piezoelectric ceramic sheet 311, and the aperture of the second liquid inlet is also between 20 μm and 50 μm.

[0161] For example, the pore size of the second mist outlet may be 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm, 17 μm, 18 μm, 19 μm or 20 μm, etc. The pore size of the second liquid inlet may be 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm or 50 μm, etc.

[0162] In this way, the microporous sheet 312 is not only provided with the first micropores 61 capable of discharging small-particle aerosols, but also provided with the second micropores 62 capable of discharging larger-particle aerosols. In this way, the sweetness and aroma can be appropriately improved while ensuring low throat irritation, thereby bringing a better smoking experience to the user.

[0163] like Fig.12 As shown, the light-colored portion is the distribution area of ​​the first micropores 61 , and the dark-colored portion is the distribution area of ​​the second micropores 62 .

[0164] For example, Fig.12 As shown in A, E, F, and G, the first micropores 61 may be concentrated in the central area of ​​the microporous sheet 312 , and the second micropores 62 may be distributed around the first micropores 61 .

[0165] As another example, Fig.12 As shown in B, the second micropores 62 may be concentrated in the central area of ​​the microporous sheet 312 , and the first micropores 61 are distributed around the second micropores 62 .

[0166] For example, Fig.12 As shown in FIG. 3C , the second micropores 62 may be distributed in a plurality of circular regions, which are arranged circumferentially at intervals in the central region of the microporous sheet 312 , and the first micropores 61 are distributed in other regions of the microporous sheet 312 except the circular regions.

[0167] For example, Fig.12 As shown in D, the second micropores 62 may be distributed in two rectangular regions, the two rectangular regions are symmetrically arranged along the diameter of the microporous sheet 312, and the first micropores 61 are distributed in other regions of the microporous sheet 312 except the rectangular regions.

[0168] For example, Fig.12 As shown in FIG. 1H , the microporous sheet 312 may be entirely formed with first micropores 61 , without any second micropores 62 .

[0169] Those skilled in the art should understand that the first micropores 61 and the second micropores 62 can also be distributed on the microporous sheet 312 in any other manner. The embodiment of the present disclosure does not specifically limit the distribution manner of the first micropores 61 and the second micropores 62 on the microporous sheet 312.

[0170] In the embodiment of the present disclosure, the ratio between the number of the first micropores 61 and the number of the second micropores 62 is 7:1 to 10:1. Preferably, the ratio between the number of the first micropores 61 and the number of the second micropores 62 is 9:1, that is, the number of the first micropores 61 accounts for 90% of the total number of the micropores 6. In this way, while ensuring low irritation, the aroma and sweetness can be improved, thereby improving the user's smoking experience.

[0171] Of course, in some other embodiments, the ratio of the first micro-holes 61 to the second micro-holes 62 in the total number of the micro-holes 6 may also be adaptively changed.

[0172] By arranging and combining different parameters such as the distribution mode, distribution area and pore size of the first micropores 61 and the second micropores 62 on the microporous sheet 312, it is possible to control multiple taste dimensions such as the aroma, sweetness, stimulation and satisfaction of the aerosol formed after atomization.

[0173] Table 7 Effects of different micropore arrangement schemes and fog outlet aperture on taste

[0174]

[0175]

[0176] The micropore arrangement scheme in Table 7 corresponds to Fig.12 Eight different distribution modes of the first micropores 61 and the second micropores 62 in AH on the microporous sheet 312. Among them, the specific parameters of the ultrasonic atomization sheet assembly used in the experiment are: diameter 14mm, thickness 0.78mm, operating frequency 130kHz, operating voltage 80Vpp, maximum central vibration area 1.5mm, medium viscosity 4cP. The specific parameters of the microporous sheet of the ultrasonic atomization sheet assembly are: diameter 14mm, thickness 0.05mm, first liquid inlet aperture 40μm, second liquid inlet aperture 40μm, total number of micropores 2000, through-hole rate 85%.

[0177] It can be seen from Table 7 that when only the first micropores 61 are formed on the microporous sheet 312, the aerosol formed after atomization has the lowest irritation to the throat, and the aroma, sweetness and satisfaction are also relatively low. When the number of the first micropores 61 accounts for more than 90% of the total number of micropores 6 (corresponding to arrangement scheme G), the factors affecting the taste, such as irritation, aroma, sweetness, and satisfaction, are relatively moderate, and therefore, it may be more conducive to the smoking experience of most users.

[0178] In addition, the apertures of the first mist outlet 611 and the second mist outlet will also affect the taste. As can be seen from Table 7, when the aperture of the first mist outlet 611 becomes smaller, the irritation will also decrease. When the aperture of the second mist outlet becomes larger, the aroma and sweetness will be significantly improved.

[0179] Therefore, the distribution mode, distribution area and pore size of the first micropores 61 and the second micropores 62 can be specifically adjusted according to different requirements, and the embodiments of the present disclosure do not specifically limit them.

[0180] like Fig.10 As shown, the central area of ​​the microporous sheet 312 protrudes toward one side of the liquid inlet channel 22 to form a protrusion 7, and the micropores 6 are arranged on the protrusion 7.

[0181] In the embodiment of the present disclosure, the diameter of the protrusion 7 is between 2 mm and 8 mm, and the spacing distance between the apex of the protrusion 7 and the plane of the microporous sheet 312 is between 1 mm and 6 mm.

[0182] For example, the diameter of the protrusion 7 may be 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm or 8 mm, etc. The spacing distance between the vertex of the protrusion 7 and the plane of the microporous sheet 312 may be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm or 6 mm, etc.

[0183] In the disclosed embodiment, the protrusion 7 is formed by stamping, and the stamping process is simple to operate and has stable quality.

[0184] Of course, in some other embodiments, the protrusion 7 may also be formed by any other suitable process.

[0185] like Figures 2 to 6 As shown, the atomizer core 3 further includes a liquid guide 32 , which is located in the liquid inlet channel 22 and abuts against the protrusion 7 of the microporous sheet 312 , so as to guide the aerosol-generating matrix to the ultrasonic atomizer sheet assembly 31 .

[0186] Exemplarily, the liquid-conducting member 32 includes, but is not limited to, porous cotton, porous ceramics, porous plastics or porous glass.

[0187] The liquid guide 32 can adsorb the aerosol generating matrix onto its top surface, forming a thinner liquid surface in contact with the ultrasonic atomization sheet assembly 31 , thereby reducing the amount of liquid in the aerosol generating matrix that affects the vibration effect of the ultrasonic atomization sheet assembly 31 .

[0188] The protrusion 7 abuts against the liquid guiding part 32, so that the micropores 6 on the microporous sheet 312 can contact the liquid guiding part 32 to the greatest extent. In this way, when the nebulizer 10 is in working state, the atomization efficiency of the ultrasonic atomization sheet assembly 31 can be improved, and when the nebulizer 10 is not in working state, it can play a certain blocking role, thereby effectively reducing the volatilization of the aroma of the aerosol generating matrix and reducing the possibility of leakage in the liquid storage chamber 11, thereby improving the user experience.

[0189] Exemplarily, the liquid guiding member 32 may be formed with a plurality of liquid guiding grooves 321 , and the aerosol generating substrate in the liquid inlet channel 22 may be guided to the ultrasonic atomization sheet assembly 31 through the capillary action of the liquid guiding grooves 321 .

[0190] The bottom end of the air outlet channel 12 of the atomizer 10 of the disclosed embodiment is directly covered around the mist outlet area 31a for discharging the aerosol formed after atomization. In this way, the aerosol formed after atomization can be directly discharged from the shell assembly 1 through the air outlet channel 12 for use by the user, shortening the flow path of the aerosol and reducing the possibility of condensation of the aerosol, thereby reducing the loss of the aerosol and improving the user experience.

[0191] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. An atomizer, characterized in that: The atomizer comprises: A housing assembly, wherein an air outlet passage is formed in the housing assembly; an atomizer seat, at least a portion of which is disposed within the housing assembly; and An atomizing core is arranged on the atomizing seat, the atomizing core comprises an ultrasonic atomizing sheet assembly, the ultrasonic atomizing sheet assembly is used to atomize the aerosol generating matrix, the ultrasonic atomizing sheet assembly has a mist outlet area for discharging the aerosol, and the mist outlet area faces the top side of the atomizer; Wherein, the bottom end cover of the air outlet channel is arranged around the mist outlet area, so that the aerosol formed after atomization is discharged from the shell component through the air outlet channel.

2. The atomizer according to claim 1, characterized in that The atomizer seat is formed with an air inlet channel, and the side wall of the bottom end of the air outlet channel is formed with at least one notch, and the air inlet channel and the air outlet channel are connected through the notch.

3. The atomizer according to claim 1, characterized in that The air outlet channel extends in a straight line along the top and bottom direction of the atomizer.

4. The atomizer according to any one of claims 1 to 3, characterized in that The length of the air outlet channel does not exceed 35 mm.

5. The atomizer according to claim 4, characterized in that The length of the air outlet channel is between 15 mm and 35 mm; and / or the equivalent diameter of the air outlet channel is between 2.5 mm and 5.0 mm.

6. The atomizer according to claim 1, characterized in that A liquid storage cavity is formed in the shell assembly, the liquid storage cavity is located on the top side of the atomizer seat, the air outlet channel is located in the middle area of ​​the liquid storage cavity, and the ultrasonic atomizer sheet assembly is arranged perpendicular to the top and bottom direction of the atomizer.

7. The atomizer according to claim 1, characterized in that The atomizer seat comprises: an atomizer top seat, an atomizer base and a first sealing member. The atomizer base is located at the bottom side of the atomizer top seat, and the first sealing member is located at the top side of the atomizer top seat.

8. The atomizer according to claim 7, characterized in that A plurality of convex points are formed on the bottom surface of the first sealing member; The atomizing top seat is formed with a groove, and the ultrasonic atomizing sheet assembly is arranged in the groove; The first sealing member abuts against the ultrasonic atomization sheet assembly via the convex point to fix the ultrasonic atomization sheet assembly in the groove.

9. The atomizer according to claim 8, characterized in that A spacing area is formed between the bottom surface of the first sealing member and the top surface of the ultrasonic atomizing sheet assembly, and the convex point is located in the spacing area; The atomizer top seat is formed with at least one connecting groove, and the atomizer base is formed with at least one air inlet hole. The connecting groove connects the air inlet hole and the spacing area. The air inlet hole, the connecting groove and the spacing area define at least a part of the air inlet channel.

10. The atomizer according to claim 1, characterized in that The atomizer comprises: a second sealing member, the second sealing member is formed with a first through hole, the hole wall of the first through hole is provided with an annular groove, the second sealing member surrounds the ultrasonic atomization sheet assembly, and the edge of the ultrasonic atomization sheet assembly is embedded in the annular groove.

11. The atomizer according to claim 1, characterized in that The ultrasonic atomization sheet assembly comprises: a piezoelectric ceramic sheet and a microporous sheet; The microporous sheet is stacked on the bottom side of the piezoelectric ceramic sheet and connected to the piezoelectric ceramic sheet. A second through hole is formed in the middle area of ​​the piezoelectric ceramic sheet. The microporous sheet is provided with micropores corresponding to the range of the second through hole.

12. The atomizer according to claim 11, characterized in that The atomizer seat is formed with a liquid inlet channel, the central area of ​​the microporous sheet protrudes toward one side of the liquid inlet channel to form a convex portion, and the micropores are arranged on the convex portion.

13. The atomizer according to claim 12, characterized in that The atomizing core further comprises: a liquid guiding member, which is located in the liquid inlet channel and abuts against the protruding portion, and is used for guiding the aerosol generating matrix to the ultrasonic atomizing sheet assembly.

14. An aerosol generating device, characterized in that: The aerosol generating device comprises: Power supply components; and The atomizer according to any one of claims 1 to 13, The power supply assembly is electrically connected to the atomizer and is used to supply power to the atomizer.

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