CN217826749U

CN217826749U - Ultrasonic atomization core and electronic atomizer

Info

Publication number: CN217826749U
Application number: CN202221055542.5U
Authority: CN
Inventors: 肖建新; 曹耀辉; 彭策; 廖朝兴
Original assignee: Hainan Moore Brothers Technology Co Ltd
Current assignee: Hainan Moore Brothers Technology Co Ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-11-18
Anticipated expiration: 2032-05-05

Abstract

The utility model relates to an ultrasonic atomization core and electronic atomizer, ultrasonic atomization core includes: one surface of the ultrasonic atomization piece is inwards sunken to form an atomization cavity with a focusing function; the liquid supply layer covers the cavity wall of the atomizing cavity, and an atomizing surface with a primary atomizing function is formed on the surface of the liquid supply layer opposite to the cavity wall; the ultrasonic waves focused by the atomizing cavity can form an atomizing area with a secondary atomizing function, and the atomizing area is located on a flowing path of aerosol generated by primary atomization of an atomizing surface. Above-mentioned ultrasonic atomization core can carry out the secondary atomizing to the great aerosol granule of particle diameter to realized the effective atomizing of atomizing medium, effectively controlled the particle diameter size of the aerosol granule that the atomizing produced, consequently the taste of aerosol is more fine and smooth, has improved the use experience of the electronic atomizer who is equipped with this ultrasonic atomization spare.

Description

Ultrasonic atomization core and electronic atomizer

Technical Field

The utility model relates to an atomizing technical field, in particular to ultrasonic atomization core and electronic atomizer.

Background

The aerosol is a colloidal dispersion system formed by dispersing small solid or liquid particles in a gas medium, and a novel alternative absorption mode is provided for a user because the aerosol can be absorbed by a human body through a respiratory system. Nebulizers are devices that form aerosols from stored nebulizable media by heating or ultrasound, etc. Aerosolizable media include nicotine (nicotine) -containing tobacco products, medical drugs, skin care emulsions, and the like, which are aerosolized to deliver an inhalable aerosol to a user, replacing conventional product forms and absorption regimes.

The atomizing medium of most of the existing atomizers usually generates aerosol in a hot boiling atomization mode, but the atomization process often causes high local temperature to crack the atomizing medium to form harmful substances, and the piezoelectric ultrasonic atomization technology is used as a pure physical sound wave oscillation atomization mode, so that the generation of the harmful substances caused by high temperature can be avoided, but the existing ultrasonic atomization technology has limited atomization efficiency, and the generated aerosol particles have large particle size and are difficult to meet the requirements of the atomizers.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an ultrasonic atomizing core and an electronic atomizer for solving the problem of limited atomizing efficiency of ultrasonic atomizing technology, and the ultrasonic atomizing core and the electronic atomizer can achieve the technical effect of effectively improving the atomizing effect.

According to one aspect of the present application, there is provided an ultrasonic atomizing core comprising:

one surface of the ultrasonic atomization piece is inwards sunken to form an atomization cavity with a focusing function; and

the liquid supply layer covers the cavity wall of the atomizing cavity, and an atomizing surface with a primary atomizing function is formed on the surface of the liquid supply layer, which is back to the cavity wall;

the ultrasonic waves focused by the atomization cavity can form an atomization area with a secondary atomization function, and the atomization area is located on a flow path of aerosol generated by primary atomization of the atomization surface.

In one embodiment, the ultrasonic atomization member is in a spherical crown shape, and the cavity wall of the atomization cavity is a spherical crown surface.

In one embodiment, in the thickness direction of the cavity wall, the ultrasonic atomization component includes an inner conductive layer, an atomization body, and an outer conductive layer, which are sequentially stacked, where the inner conductive layer partially covers a side surface of the atomization body close to the liquid supply layer, and the outer conductive layer partially covers a side surface of the atomization body facing away from the liquid supply layer.

In one embodiment, the ultrasonic atomization piece further comprises an inner conductive electrode, one end of the inner conductive electrode is electrically connected to the inner conductive layer, and the other end of the inner conductive electrode is bent and extended out of the atomization cavity through the open end of the atomization cavity.

In one embodiment, the ultrasonic atomization piece further comprises a protective layer, and the protective layer covers one side surface of the inner conductive layer, which faces away from the atomization body, and one side surface of the atomization body, which is exposed out of the inner conductive layer.

In one embodiment, the ultrasonic atomization core further comprises a limiting layer, the limiting layer covers one side surface of the liquid supply layer, which faces away from the cavity wall of the atomization cavity, and applies pressure to the liquid supply layer, which faces the cavity wall of the atomization cavity, and the limiting layer is provided with a plurality of communication ports allowing aerosol to flow through.

In one embodiment, the ultrasonic atomization piece is provided with a mounting hole, the mounting hole is communicated with the cavity wall of the atomization cavity and the outer wall of the ultrasonic atomization piece, the ultrasonic atomization piece further comprises a liquid guide piece, and one end of the liquid guide piece penetrates through the mounting hole to be in contact with the liquid supply layer.

In one embodiment, the ultrasonic atomization core further comprises a preheating assembly, one end of the preheating assembly is inserted into the mounting hole, the preheating assembly is provided with a preheating channel communicated with the mounting hole, one end of the liquid guide member penetrates through the preheating channel, and the preheating assembly is used for heating the atomization medium in the liquid guide member.

In one embodiment, the preheating component is a metal heating tube; or

The preheating assembly comprises a preheating pipe and a heating layer, one end of the preheating pipe is inserted into the mounting hole, and the heating layer is coated on the outer wall or the inner wall of the preheating pipe or embedded in the preheating pipe.

In one embodiment, the atomizing area has a sound field focusing area, the ultrasonic atomizing core further includes a guide member, the guide member is covered on the opening end of the atomizing cavity, the guide member is provided with a mist outlet, and the mist outlet is located in the sound field focusing area.

According to an aspect of the application, an electronic atomization device is provided, including foretell ultrasonic atomization core, electronic atomization device still includes main fuselage and battery pack, ultrasonic atomization core reaches battery pack install in the main fuselage, battery pack does the power supply of ultrasonic atomization core.

Above-mentioned ultrasonic atomization core can carry out the secondary atomizing to the great aerosol granule of particle diameter to realized the effective atomizing of atomizing medium, effectively controlled the particle diameter size of the aerosol granule that the atomizing produced, consequently the taste of aerosol is more fine and smooth, has improved the use experience of the electronic atomizer who is equipped with this ultrasonic atomization spare.

Drawings

Fig. 1 is a schematic structural view of an ultrasonic atomizing core according to an embodiment of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of the ultrasonic atomizing core of FIG. 1;

FIG. 3 is an exploded view of the ultrasonic atomizing core of FIG. 1;

fig. 4 is a top view of the ultrasonic atomizing core of fig. 1.

The reference numbers illustrate:

100. an ultrasonic atomizing core; 20. an ultrasonic atomization member; 21. an atomizing chamber; 21a, an atomization area; 22. an inner conductive layer; 23. an atomizing body; 24. an outer conductive layer; 25. a protective layer; 26. a fixing member; 40. a liquid supply layer; 40a, an atomization surface; 60. a limiting layer; 70. a liquid guiding member; 80. a preheating assembly; 81. a preheating pipe; 83. An insulating layer; 85. a heat generating layer.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As described in the background art, aerosol is generated by means of hot-boiling atomization, the local temperature of the atomization surface may be as high as 350 ℃, and the high temperature may cause local cracking of the components of the atomization medium to form carcinogenic harmful substances such as aldehyde, ketone and nitrile, and especially when the liquid supply is insufficient, the local temperature of the atomization surface is higher, which causes more harm. The existing ultrasonic atomization technology cannot generate harmful substances due to high temperature, but has limited atomization effect, can not effectively atomize high-viscosity liquid (more than or equal to 10 cp), and the median of the particle size of aerosol particles generated by ultrasonic atomization is usually more than or equal to 5 mu m. For an electronic atomizer that generates an aerosol for human consumption, the viscosity of the atomizing medium is usually around 300cp, and the particle size of the aerosol particles is required to be between 0.5 μm and 3 μm to ensure good smoking taste. Therefore, the existing ultrasonic atomization technology is difficult to meet the requirements of the electronic atomizer.

As shown in fig. 1 to 4, in order to achieve effective atomization of the atomized medium and control the particle size of the aerosol generated by atomization, the present application provides an electronic atomizer (not shown), which includes a main body, an ultrasonic atomization core 100 and a power supply assembly, where the ultrasonic atomization core 100 and the power supply assembly are housed in the main body, the main body is further provided with a liquid storage cavity for storing the liquid atomized medium, and the liquid storage cavity is used for providing the atomized medium for the ultrasonic atomization core 100. The ultrasonic atomization core 100 can generate ultrasonic waves to atomize an atomization medium under the action of electric energy of the power supply assembly, and the atomized atomization medium generates aerosol for a user to suck.

It is understood that the electronic atomizer of the present application can be used not only for atomizing a high viscosity atomizing medium, but also for atomizing a low viscosity atomizing medium, such as herbal extracts, medicines, and the like.

With continued reference to fig. 1 to 4, the ultrasonic atomization core 100 includes an ultrasonic atomization component 20 and a liquid supply layer 40, the ultrasonic atomization component 20 is electrically connected to a power supply component, and the liquid supply layer 40 covers a side surface of the ultrasonic atomization component 20. The ultrasonic atomization component 20 is capable of generating ultrasonic waves at a specific frequency under the power of the power supply component, and the ultrasonic waves atomize the atomized medium on the surface of the liquid supply layer 40 to generate aerosol.

Specifically, one surface of the ultrasonic atomization component 20 is recessed inward to form an atomization cavity 21 with a focusing function, the liquid supply layer 40 covers the cavity wall of the atomization cavity 21, and the surface of the liquid supply layer 40 opposite to the cavity wall forms an atomization surface 40a with a primary atomization function. The ultrasonic waves focused by the atomizing cavity 21 can form an atomizing area with a secondary atomizing function, and the atomizing area is located on a flow path of aerosol generated by primary atomization of the atomizing surface 40a. The central position of the atomizing area 21a has a sound field focusing area, and the sound field intensity of the sound field focusing area is greater than that of the rest positions of the atomizing chamber 21.

When the ultrasonic atomizing element 20 generates ultrasonic waves under the action of electric energy, the atomizing medium of the atomizing surface 40a can be atomized into aerosol particles with larger particle size under the action of the ultrasonic waves. When the aerosol particles generated by the atomizing surface 40a pass through the atomizing area 21a at the opening end of the atomizing chamber 21, the atomizing area 21a has a large energy as a focusing area of the sound field, so that the aerosol particles can be secondarily atomized, and the aerosol particles flowing out of the atomizing chamber 21 have a small particle size. Therefore, the ultrasonic atomization piece 20 can carry out secondary atomization on aerosol particles with larger particle sizes, so that effective atomization of an atomization medium is realized, the particle sizes of the aerosol particles generated by atomization are effectively controlled, the mouthfeel of the aerosol is finer, and the use experience of the electronic atomizer with the ultrasonic atomization piece 20 is improved.

In a preferred embodiment, the ultrasonic atomizing element 20 is a part of an imaginary hollow sphere and is spherical crown-shaped, and the cavity wall of the atomizing cavity 21 is a part of an imaginary spherical surface and is spherical crown-shaped, so that it has a good focusing effect. It can be understood that, based on the different shapes of the cavity walls of the atomizing cavity 21, the shape and the range of the sound field focusing region are also different, and may be set as required to meet different atomizing requirements, specifically, in an embodiment, the sound field focusing region is a focus having the maximum sound field intensity.

Specifically, in some embodiments, the ultrasonic atomization component 20 comprises an inner conductive layer 22, an atomization body 23 and an outer conductive layer 24 which are sequentially stacked in the thickness direction of the cavity wall, and current supplied by a power supply assembly is applied to opposite side surfaces of the ultrasonic atomization component 20 through the inner conductive layer 22 and the outer conductive layer 24, so that the ultrasonic atomization component 20 vibrates at a specific frequency.

In particular, the atomising body 23 is in the shape of a spherical cap. In particular, in one embodiment, the atomizing body 23 is hemispherical, i.e. the radius of the spherical cap formed by the atomizing body 23 is higher than the radius of the virtual hollow sphere to which it belongs. In yet another embodiment, the height of the spherical cap formed by the atomizing body 23 is smaller than the radius of the imaginary hollow sphere to which it belongs.

In a preferred embodiment, the radius of the open end of the atomizing body 23 is 5mm-30mm, the thickness of the atomizing body 23 is 0.3mm-2mm, the atomizing body 23 is made of a ceramic material, and the resonant frequency of the atomizing body 23 is 50KHZ-3MHz. It will be appreciated that the shape and size of the atomising body 23 is not limited thereto and may be arranged as required to meet different requirements.

The inner conductive layer 22 has a spherical crown shape similar to the shape of the atomization body 23, and the inner conductive layer 22 partially covers a side surface of the atomization body 23 close to the liquid supply layer 40, preferably at the bottom of the atomization body 23 away from the open end of the atomization chamber 21. The outer conductive layer 24 is also in the form of a spherical cap shaped like the atomising body 23 and the outer conductive layer 2 partially covers the outer surface of the atomising body 23, preferably at the bottom of the atomising body 23 at the open end remote from the atomising chamber 21. Specifically, the inner conductive layer 22 and the outer conductive layer 24 are formed on the atomizing body 2 by printing, the thickness of the inner conductive layer 22 and the outer conductive layer 24 may be 1 μm to 100 μm, and the inner conductive layer 22 and the outer conductive layer 24 may be formed by mixing one or more of gold, silver platinum, palladium, and nickel.

As a preferred embodiment, the surface of the inner conductive layer 22 facing away from the atomizing body 23 and the surface of the outer conductive layer 24 facing away from the atomizing body 23 may be subjected to an anti-corrosion treatment to prevent the inner conductive layer 22 and the outer conductive layer 24 from being corroded by the atomizing medium.

Further, the ultrasonic atomization component 20 further includes an inner conductive electrode and an outer conductive electrode (not shown), the inner conductive layer 22 is electrically connected to the power supply component through the inner conductive electrode, and the outer conductive layer 24 is electrically connected to the power supply component through the outer conductive electrode.

Specifically, one end of the inner conductive electrode is electrically connected to the inner conductive layer 22, the other end of the inner conductive electrode is bent and extended out of the atomizing cavity 21 through the opening end of the atomizing cavity 21, and is electrically connected to the main body through an electrode lead or an elastic needle, and the components of the inner conductive electrode are consistent with those of the inner conductive layer 22. One end of the outer conductive electrode is electrically connected to the outer conductive layer 24, and the other end of the outer conductive electrode is electrically connected to the main body through an electrode lead or a pogo pin, and the composition of the outer conductive electrode is the same as that of the outer conductive layer 23. In this way, by providing the inner conductive electrode extending by bending, the inner conductive layer 22 can be electrically connected to the power module easily, and the connection stability is improved.

In some embodiments, the ultrasonic atomizing element 20 further includes a protection layer 25, the protection layer 25 covers a side surface of the inner conductive layer 22 facing away from the atomizing body 23 and a side surface of the atomizing body 23 exposed out of the inner conductive layer 22, so as to prevent the inner conductive layer 22 and the atomizing body 23 from being in direct contact with the atomizing medium to cause a short circuit phenomenon, and simultaneously prevent the inner conductive layer 22 and the atomizing body 23 from contaminating the atomizing medium, and a side surface of the protection layer 25 facing away from the atomizing body 23 forms a cavity wall of the atomizing cavity 21.

Specifically, in an embodiment, the protection layer 25 is formed of an inorganic glaze material, the thickness of the protection layer 25 is 10 μm to 50 μm, and the surface of the protection layer 25 has a concave-convex micro-nano structure to have hydrophobicity. It is to be understood that the material forming the protective layer 25 is not limited thereto, and may be set as needed to meet different protection requirements.

The liquid supply layer 40 covers the surface of the side of the protective layer 25 far away from the atomization body 23 and is in a spherical crown shape similar to the atomization body 23, and the liquid supply layer 40 is made of materials with strong adsorption capacity, such as organic cotton, and is used for absorbing and storing atomization media. As such, the ultrasonic waves generated by the ultrasonic atomization component 20 may cause the atomization medium on the surface of the liquid supply layer 40 to atomize to form an aerosol.

Further, the ultrasonic atomization core 100 further comprises a limiting layer 60, the limiting layer 60 covers one side of the liquid supply layer 40, which is opposite to the cavity wall of the atomization cavity 21, and applies pressure to the liquid supply layer 40, which faces the cavity wall of the atomization cavity 21, and the limiting layer 60 is provided with a plurality of communicating ports which are communicated with the liquid supply layer 40. Thus, the liquid supply layer 40 is tightly attached to the wall of the atomizing chamber 21, so that the energy transfer efficiency is ensured, and the aerosol generated on the atomizing surface 40a can smoothly flow out through the communicating opening. Specifically, in one embodiment, the stopper layer 60 is formed of a mesh structure.

In a preferred embodiment, the limiting layer 60 is made of a conductive material such as metal, so that the limiting layer 60 can be heated by applying a current to the limiting layer 60, and the aerosol generated on the atomization surface 40a can be heated, so that the aerosol has a desired temperature.

In some embodiments, a mounting hole 20a is formed through the central position of the bottom of one end of the ultrasonic atomization component 20 away from the open end in the thickness direction, and the radius of the mounting hole 20a is 0.1mm-10mm. The ultrasonic atomization core 10 further includes a liquid guide 70, one end of the liquid guide 70 passes through the mounting hole 20a and contacts the liquid supply layer 40, and the other end of the liquid guide 7 extends into the bottom of the liquid storage chamber. In this manner, one end of the liquid guide 70 absorbs the atomized medium in the liquid storage chamber, and the atomized medium enters the liquid supply layer 40 along the liquid guide 70 due to capillary action. It is understood that the material forming the liquid guide 70 is not limited, and in some embodiments, may be made of one or more of organic cotton, inorganic fiber, and non-woven fabric.

Utilize above-mentioned drain 70 to carry out the drain to liquid supply layer 40, have higher drain stability, the atomizing medium is from the central point that supplies liquid layer 40 to diffusion all around, can avoid the atomizing medium to concentrate and pile up, has realized the thin layer distribution of atomizing medium on the atomizing surface 40a, has guaranteed that atomizing process's is smooth and easy goes on.

In some embodiments, the ultrasonic atomization core 100 further includes a preheating assembly 80, the preheating assembly 80 is disposed at one end of the ultrasonic atomization member 20, the preheating assembly 80 can be rapidly heated to immediately preheat the atomization medium in the liquid guide member 70, the viscosity of the atomization medium can be properly reduced through the preheating effect of the preheating assembly 80, so that the fluidity of the atomization medium is increased, the atomization medium can more easily enter the liquid supply layer 40, and the atomization is rapidly performed under the effect of the ultrasonic waves to form aerosol, so that the atomization efficiency and reliability of the electronic atomizer for the high-viscosity atomization medium are further improved. Moreover, the atomized aerosol is more exquisite and plump, and has better mouthfeel. In the present application, the preheating temperature of the preheating assembly 80 is 20 ℃ to 200 ℃.

Specifically, a ring-shaped fixing member 26 is embedded in the mounting hole 20a of the ultrasonic atomizing member 20, and the fixing member 26 is made of a material having certain elasticity, such as silicone rubber. One end of the preheating assembly 80 is inserted into the mounting hole 20a, the fixing member 26 surrounds the preheating assembly 80 to close the gap between the hole wall of the mounting hole 20a and the preheating assembly 80, so that the preheating assembly 80 is fixed relative to the ultrasonic atomizing member 20, meanwhile, the atomized medium is prevented from leaking between the hole wall of the mounting hole 20a and the preheating assembly 80, and the other end of the preheating assembly 80 extends into the top of the liquid storage cavity. The preheating assembly 80 is provided with a preheating channel for communicating the liquid storage cavity with the mounting hole 20a, and one end of the liquid guide member 70 extending out of the liquid storage cavity penetrates through the preheating channel to contact the liquid supply layer 40. Therefore, the preheating assembly 80 can heat the atomized medium passing through the liquid guiding member 70, and simultaneously can support the ultrasonic atomization member 20 and also can accommodate and limit the liquid guiding member 70.

Specifically, in one embodiment, the preheating assembly 80 is a metal heating tube electrically connected to the power supply assembly, the metal heating tube is a hollow tubular structure formed by a metal material, and the metal heating tube can rapidly generate heat under the action of electric energy to realize the preheating function.

Specifically, in another embodiment, the preheating assembly 80 includes a preheating pipe 81, an insulating layer 83, and a heat generating layer 85. The preheating pipe 81 is a hollow tubular structure, one end of the preheating pipe 81 is inserted into the mounting hole 20a, and the other end of the preheating pipe 81 extends into the liquid storage cavity. The heating layer 85 can be formed by a heating structure such as a heating film or a heating wire, the heating layer 85 covers the outer wall or the inner wall of the preheating pipe 81, and the insulating layer 83 is located between the heating layer 85 and the outer wall or the inner wall of the preheating pipe 81 to perform an insulating function. In other embodiments, the heat generating layer 85 can also be embedded in the sidewall of the preheating pipe 81.

It is understood that the preheating assembly 80 may be heated in any manner, such as by electromagnetic induction heating, infrared radiation heating, microwave heating, or the like, other than by resistance heating. In some embodiments, a porous ceramic tube, a planar porous ceramic structure, may also be used as the liquid guiding member 70 to satisfy both the liquid guiding and preheating functions, as long as the preheated atomized medium can be delivered to the liquid supply layer 40.

In some embodiments, the ultrasonic atomizing core 100 further includes a guiding member (not shown), the guiding member is covered on the opening end of the atomizing cavity 21, the guiding member is provided with a mist outlet, the mist outlet is located in the sound field focusing area, and the aerosol generated by the atomizing surface 40a needs to flow out through the mist outlet provided on the guiding member. In this way, the aerosol generated by the atomizing surface 40a is collected near the sound field focusing region of the atomizing area 21a by the guiding action of the guide, thereby improving the secondary atomizing efficiency. As a preferred embodiment, the guide member forms a guide passage communicating with the mist outlet, and the cross-sectional area of the guide passage gradually decreases from the end away from the mist outlet to the end close to the mist outlet, thereby preventing the flow of the aerosol from being blocked.

According to the ultrasonic atomization core 100 and the electronic atomization device, the atomization surface 40a and the atomization area 21a are used for atomizing aerosol particles for two times, so that the aerosol particles flowing out of the ultrasonic atomization core 100 have smaller particle sizes, and the taste is improved. Moreover, the preheating assembly 80 can rapidly raise the temperature of the atomized medium passing through the liquid guide member 70, so that the aerosol generating speed can be increased, and the aerosol has proper temperature when flowing out of the electronic atomization device, and meanwhile, the consistency of the mouthfeel is guaranteed. In addition, compare in prior art's drain and the liquid supply mode, the drain and the liquid supply mode of ultrasonic atomization core 100 of this application have higher uniformity and stability, and the phenomenon that big-hour is little when can effectively avoid atomizing volume has higher atomizing efficiency and better taste.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An ultrasonic atomizing core, comprising:

the ultrasonic waves focused by the atomizing cavity can form an atomizing area with a secondary atomizing function, and the atomizing area is located on a flowing path of aerosol generated by primary atomization of the atomizing surface.

2. The ultrasonic atomizing core of claim 1, wherein the ultrasonic atomizing member is in a spherical crown shape, and the cavity wall of the atomizing cavity is a spherical crown surface.

3. The ultrasonic atomizing core according to claim 1, wherein the ultrasonic atomizing member includes, in the thickness direction of the cavity wall, an inner conductive layer, an atomizing body, and an outer conductive layer, which are sequentially stacked, the inner conductive layer partially covers a side surface of the atomizing body close to the liquid supply layer, and the outer conductive layer partially covers a side surface of the atomizing body facing away from the liquid supply layer.

4. The ultrasonic atomizing core according to claim 3, wherein the ultrasonic atomizing member further includes an inner conductive electrode, one end of the inner conductive electrode is electrically connected to the inner conductive layer, and the other end of the inner conductive electrode extends out of the atomizing cavity through the opening end of the atomizing cavity.

5. The ultrasonic atomization core of claim 3 wherein the ultrasonic atomization member further comprises a protective layer covering a surface of the inner conductive layer on a side facing away from the atomization body and a surface of the atomization body on a side exposed from the inner conductive layer.

6. The ultrasonic atomizing core according to claim 5, further comprising a limiting layer, wherein the limiting layer covers a side surface of the liquid supply layer facing away from the cavity wall of the atomizing cavity and applies pressure to the liquid supply layer toward the cavity wall of the atomizing cavity, and the limiting layer is provided with a plurality of communicating ports for allowing aerosol to flow through.

7. The ultrasonic atomizing core according to claim 1, wherein the ultrasonic atomizing member defines a mounting hole, the mounting hole communicates with the cavity wall of the atomizing cavity and the outer wall of the ultrasonic atomizing member, the ultrasonic atomizing member further includes a liquid guiding member, and one end of the liquid guiding member passes through the mounting hole and contacts the liquid supply layer.

8. The ultrasonic atomizing core of claim 7, wherein the ultrasonic atomizing core further comprises a preheating assembly, one end of the preheating assembly is inserted into the mounting hole, the preheating assembly is provided with a preheating channel communicated with the mounting hole, one end of the liquid guiding member penetrates through the preheating channel, and the preheating assembly is used for heating an atomizing medium in the liquid guiding member.

9. The ultrasonic atomizing core of claim 8, wherein the preheating component is a metal heating tube; or

10. The ultrasonic atomizing core of claim 1, wherein the atomizing area has a sound field focusing area, the ultrasonic atomizing core further comprises a guiding member, the guiding member is covered on an opening end of the atomizing cavity, the guiding member is provided with a mist outlet, and the mist outlet is located in the sound field focusing area.

11. An electronic atomizing device, comprising the ultrasonic atomizing core according to any one of claims 1 to 10, wherein the electronic atomizing device further comprises a main body and a battery assembly, the ultrasonic atomizing core and the battery assembly are installed in the main body, and the battery assembly supplies power to the ultrasonic atomizing core.