Electronic atomizer based on piezoelectric ceramics

Abstract

The invention provides an electronic atomizer based on piezoelectric ceramics, which comprises a shell, an atomizing component and an electronic control component, the atomizing component comprises a liquid storage bin, a piezoelectric ceramic micropore atomizing device and a mist outlet cavity, the piezoelectric ceramic micropore atomizing device comprises a piezoelectric ceramic piece, and the piezoelectric ceramic piece is arranged in the liquid storage bin. And a plurality of atomization micropores for filling liquid to be atomized are formed in the piezoelectric ceramic piece. Through multiple innovative designs, the electronic atomizer shows remarkable beneficial effects in multiple aspects of detachable structure, safety, intelligent control, health, environmental protection, atomization quality and the like, and an electronic atomization experience which is convenient to operate, safe, reliable, excellent in performance and friendly to health is provided for a user.

Description

Technical Field

[0001] The present invention relates to the field of atomization, and particularly to an electronic atomizer based on piezoelectric ceramics. Background Art

[0002] An electronic atomizer, as a new type of electronic device for atomizing a liquid to be atomized for user use, is usually fixedly connected in sequence by a battery assembly, a core control assembly, and an atomizer assembly. At present, there are mainly two atomization methods for atomizers:

[0003] (1) Heating atomization. This method uses a heating wire and a heating mesh to heat and atomize the liquid in the liquid storage chamber. By converting electrical energy into heat energy, the liquid matrix is atomized into an aerosol. Although this technology is mature and can provide a relatively stable atomization effect and a good experience, after long-term use, the heating element is prone to carbon deposition, which not only affects the experience but also shortens the service life of the atomization device. In addition, unidirectional heating will cause metal ion migration, resulting in uneven local resistance values, thereby affecting the heating effect and the device life. At the same time, there are also problems such as coil gunk, liquid leakage, and deteriorated atomization effect.

[0004] (2) Ultrasonic atomization. The liquid is atomized by high-frequency vibration to form fine aerosol particles, which has the advantages of small atomization particle size and delicate atomization effect. However, such atomizers are often not reusable, resulting in waste of resources. And due to cost constraints, most electronic atomization devices use ordinary lead-containing atomization sheets, which not only pose a potential threat to the health of users but also have poor atomization effects.

[0005] With the pursuit of a healthy lifestyle by people, as a new type of liquid supply product, the market demand for electronic atomization devices is increasing day by day. However, at present, the electronic atomization devices on the market have many deficiencies in atomization methods and product designs, seriously affecting the user experience and health and safety.

[0006] In order to improve the atomization efficiency and user experience, some new atomizer designs use a porous ceramic body as a liquid guiding or liquid absorbing element, and rely on the synergistic effect of capillary action and liquid gravity to improve the liquid supply efficiency. For example, the atomizer based on porous ceramic material provided by CN218245649U, through the mutual cooperation of an atomization nozzle, a base, an electrode sheet, a magnet, a block, a heating wire, a porous ceramic core, and a replacement structure, facilitates the user to replace the sponge ring, prevents it from being blocked, and ensures uniform atomization. Although there are various technical solutions applying porous ceramics to electronic atomizers in the prior art, these solutions only use porous ceramics for liquid guiding or liquid absorbing, and their electronic atomizers still essentially belong to the heating atomization method, without achieving a substantial innovation in the atomization method.

[0007] In addition, some patent applications have proposed other improvement solutions. For example, CN109909086A solves the atomization deviation problem by symmetrically distributing fluid channels; CN109656283B reduces metal ion migration by alternately driving heating elements at different times; CN207950275U improves the atomizer structure and effectively solves the dry burning problem.

[0008] In summary, there is still a large room for improvement in the technical level of electronic atomization devices. By continuously optimizing the design, it is expected to further improve the product performance and user experience. Summary of the Invention

[0009] In view of the deficiencies of the prior art, in order to further improve the product performance and user experience, the present invention aims to provide a piezoelectric ceramic-based electronic atomizer that has no chemical substance cracking during the atomization process, thereby effectively optimizing the performance and user experience of the electronic atomization device.

[0010] The present invention provides a piezoelectric ceramic-based electronic atomizer, including:

[0011] A housing with an accommodation cavity provided inside;

[0012] An atomization assembly detachably installed above the housing;

[0013] An electronic control assembly including a battery and a main board that are electrically connected and arranged in the accommodation cavity of the housing, and the main board is electrically connected to the atomization assembly.

[0014] Wherein, the atomization assembly includes a liquid storage chamber for storing the liquid to be atomized, a piezoelectric ceramic microporous atomization device, and a mist outlet chamber. The lower end of the side wall of the liquid storage chamber is provided with a liquid outlet, and the two surfaces of the piezoelectric ceramic microporous atomization device are respectively hermetically connected to the liquid outlet of the liquid storage chamber and the mist outlet chamber.

[0015] Wherein, the piezoelectric ceramic microporous atomization device includes a piezoelectric ceramic sheet and a liquid separation partition coaxially stacked and connected. A first through hole is formed in the middle area of the piezoelectric ceramic sheet; the liquid separation partition is located on the side of the piezoelectric ceramic sheet axially close to the liquid storage chamber, and the liquid separation partition is provided with a plurality of atomization micropores for flowing and filling the liquid to be atomized corresponding to the range of the first through hole.

[0016] In the present invention, the term "flow and fill" refers to the process in a specific microstructure system where the liquid to be atomized forms molecules or tiny droplets and realizes directional and continuous transmission through atomization micropores with micron-level or even nano-level apertures by means of driving forces such as surface tension, concentration difference, or mechanical movement. During this process, through the design of the aperture and / or shape of the atomization micropores and the cooperation with the surrounding connection structure, the liquid to be atomized only flows in the through hole under specific driving forces and will not spontaneously flow out of the atomization micropores to cause leakage.

[0017] In some embodiments of the present invention, the atomizing micropores can be cylindrical, and their pore diameters can be 0.05 - 10 microns, preferably 0.5 - 4 microns.

[0018] In a preferred embodiment of the present invention, the atomizing micropores are conical, with the large-diameter end located on the side close to the liquid storage chamber, the inner diameter ranging from 2 - 25 microns, and the small-diameter end close to the mist outlet chamber, with an inner diameter of 0.5 - 4 microns. This structure design with a larger inner diameter and a smaller outer diameter enables the liquid to be atomized to converge at the large-diameter end first during the process of flowing from the liquid storage chamber to the mist outlet chamber, forming a relatively large liquid volume reserve. Subsequently, when flowing towards the small-diameter end, the pressure difference generated by the gradually shrinking pore diameter is utilized to more efficiently extrude the liquid to be atomized in the form of tiny droplets, greatly improving the atomization efficiency. At the same time, the conical structure helps to guide the flow direction of the liquid to be atomized, making it more accurately transmitted towards the mist outlet chamber, and further reducing the possibility of leakage of the liquid to be atomized during the transmission process.

[0019] In various embodiments of the present invention, the porosity of the atomizing micropores formed corresponding to the range of the first through-holes on the liquid distribution partition can be 5% - 80%, preferably 10% - 60%.

[0020] In the present invention, "porosity" refers to the ratio of the volume of pores (atomizing micropores) in the material to the total volume of the material of the liquid distribution partition corresponding to the range of the first through-holes, and is used to reflect the density of the pores inside the material. There are multiple atomizing micropores on the liquid distribution partition of the present invention, and the porosity is used to represent the density of these atomizing micropores. The higher the porosity, the greater the throughput of the liquid to be atomized.

[0021] In various embodiments of the present invention, the thickness of the piezoelectric ceramic sheet can be 0.1 - 1 cm, preferably 0.5 - 1 cm.

[0022] In a preferred embodiment of the present invention, the piezoelectric ceramic sheet is made of lead-free piezoelectric ceramics, preferably potassium sodium niobate (KNN)-based lead-free piezoelectric ceramics.

[0023] In a preferred embodiment of the present invention, the liquid distribution partition is made of a metal material. For example, it can be one of stainless steel, copper and copper alloys, aluminum and aluminum alloys, titanium and titanium alloys, magnesium and magnesium alloys, nickel-cobalt alloys, palladium-nickel alloys, etc., preferably stainless steel.

[0024] The present invention does not particularly limit the size of the first through-hole formed in the middle region of the piezoelectric ceramic sheet and the proportion of the first through-hole on the surface of the piezoelectric ceramic sheet, and it can vary within a wide range according to actual needs.

[0025] In various embodiments of the present invention, the electronic control component further includes an upper electrode and a lower electrode that are electrically connected to the main board to supply power to the piezoelectric ceramic microporous atomization device. In some preferred embodiments of the present invention, the upper electrode is disposed between the piezoelectric ceramic microporous atomization device and the mist outlet chamber, and a second through hole is opened within the range corresponding to the first through hole; the lower electrode is disposed around the liquid separation partition in a concentric circle manner.

[0026] In some preferred embodiments of the present invention, the housing is provided with a semi-open cavity that is adapted to the shapes of the mist outlet chamber and the liquid storage chamber. The liquid storage chamber and the housing can be connected by a magnetic attraction member; and / or, the connection between the liquid storage chamber and the housing is achieved by providing card slots on the outer walls of both, and using one or more external card shells to connect the two. This card shell connection method involves providing matching card slots and card shells on the outer sides of the two. When assembling the liquid storage chamber and the housing, the card shell is accurately inserted into the card slot to achieve a tightly fitting connection. This connection method can provide reliable mechanical connection strength, effectively avoid component loosening caused by vibration or external force, and ensure that the electronic atomizer maintains a stable structural state in various usage environments. In practical applications, according to factors such as the specific design requirements of the product, cost considerations, and user experience, one of the connection methods can be selected alone, or the two connection methods can be combined to meet the requirements for the structural stability and usage convenience of the electronic atomizer in different scenarios.

[0027] In some preferred embodiments of the present invention, the mist outlet chamber and the liquid storage chamber are connected by a screw thread, and the lower electrode, the piezoelectric ceramic microporous atomization device, and the upper electrode are clamped between the two. Preferably, in order to ensure the sealing performance and stability of the connection part, a silica gel gasket is further provided between the liquid storage chamber and the lower electrode.

[0028] In some embodiments of the present invention, a liquid replenishing port is provided on the side wall of the liquid storage chamber for adding the liquid to be atomized into the liquid storage chamber.

[0029] In a preferred embodiment of the present invention, the electronic control component further includes a flow sensor disposed in the mist outlet chamber. The flow sensor is electrically connected to the main board and is configured to sense the air pressure change in the mist outlet chamber caused by the user's inhalation action, and accordingly turn on the circuit to enable the battery to provide a working voltage to the piezoelectric ceramic sheet, thereby driving the piezoelectric ceramic sheet to perform the atomization operation. After the circuit is turned on, the piezoelectric ceramic sheet will generate vibration under the working voltage, and this vibration will cause the volume of the atomization micropores to change, thereby squeezing the liquid to be atomized in the atomization micropores to achieve the atomization of the liquid to be atomized.

[0030] In some preferred embodiments of the present invention, the housing is provided with a charging socket, which is electrically connected to the main board and used to charge the battery.

[0031] In some preferred embodiments of the present invention, the housing is further provided with a child lock, which is connected to the main board. Its position should ensure easy operation so that the user can conveniently enable or disable the child lock function when needed, and at the same time prevent accidental touch to avoid bringing unnecessary trouble to the user during normal use. For example, the child lock can be located on the side or bottom of the housing, and its external design can adopt a concave or convex shape, which requires a certain amount of force and a specific operation method (such as long pressing, combination keys, etc.) to trigger, so as to prevent children from inadvertently turning on or operating the electronic atomizer.

[0032] In the preferred embodiments of the present invention, sealing silica gels are provided between all components to ensure the overall sealing of the electronic atomizer. The sealing silica gels are arranged at the joints of all components, such as between the housing and the atomization component, between the liquid storage chamber and the piezoelectric ceramic microporous atomization device, and at the joints between the mist outlet chamber and other components. These sealing silica gels can effectively fill the tiny gaps that may exist between components and prevent the liquid to be atomized from leaking through these gaps. Since the liquid to be atomized has a certain fluidity and permeability, the presence of the sealing silica gels can prevent the liquid to be atomized from leaking into other areas of the electronic atomizer. It can not only ensure that the liquid to be atomized only flows in the predetermined flow channels to ensure the normal atomization and transportation process of the liquid to be atomized, but also prevent the liquid to be atomized from leaking and damaging the electronic components, thereby improving the reliability and safety of the product. In addition, the sealing silica gels can also prevent external impurities such as dust and water vapor from entering the interior of the electronic atomizer, ensuring the normal working environment of the internal components and extending the service life of the electronic atomizer.

[0033] Preferably, the battery used in the present invention is a detachable lithium battery. This enables quick replacement when needed, reduces the interruption of use caused by battery depletion, and provides convenience for continuous use by the user.

[0034] Preferably, the electronic atomizer is designed in a cylindrical shape or in a cuboid shape with all sharp corners rounded. These shapes are simple and beautiful in appearance and conform to the ergonomic design. In particular, the curved surface design of the cylinder is convenient for the user to hold, making the user feel comfortable when holding the electronic atomizer and easy to operate, thus improving the user experience. From a structural perspective, the internal space layout of the cylinder is more reasonable. At the same time, this shape also has certain advantages in the processing and manufacturing process. The mold manufacturing of the cylinder is relatively simple, which can reduce the production cost and improve the production efficiency, providing convenience for large-scale production.

[0035] The innovation of the present invention mainly lies in the design of the composition and structure of the electronic atomizer. There is no special limitation on the composition of the liquid to be atomized, as long as it can be atomized by the atomization principle of the piezoelectric ceramic sheet proposed by the present invention. Generally, the selection of the liquid to be atomized follows the principles of safety and compatibility. The following are several common categories:

[0036] Isotonic solution: such as normal saline, used to moisten the respiratory tract or cooperate with other atomization therapies;

[0037] Pure water type: distilled water or deionized water;

[0038] Moisturizing auxiliary liquid: such as medical-grade hyaluronic acid solution, which can assist in adjusting the environmental humidity and also take into account the skin moisturizing needs;

[0039] Natural essential oil diluent: such as lavender diluted with pure water / base oil (recommended concentration < 3%), used for space fragrance diffusion;

[0040] Herbal water-soluble extract: products without alcohol and irritating additives;

[0041] Special cleaning liquid for instruments: disinfection or maintenance solutions supporting some atomizers.

[0042] Through the above technical solutions, the present invention has the following beneficial effects:

[0043] I. Optimization effect of atomization micropores

[0044] By controlling the pore diameter and porosity of the atomization micropores, multiple beneficial effects are achieved. First of all, when the user is using, there will be no phenomenon of spraying mist, avoiding discomfort and unsightliness during the use process. At the same time, the optimized atomization micropores can make the formed atomized substance more uniform and delicate, effectively solving the problem of rough atomization particle size existing in the market. This delicate atomized substance meets the user's demand for high-quality atomization effect and provides a better user experience for the user.

[0045] II. Advantages brought by the detachable structure

[0046] Convenience of component replacement: The present invention provides an electronic atomization device with a detachable atomization structure. The separation design of the mist outlet cavity and the liquid storage chamber enables the user to conveniently replace the mist outlet cavity. When the mist outlet cavity is damaged, its performance deteriorates or it needs to be cleaned, the user can disassemble and replace it separately without replacing the entire electronic atomizer. This not only prolongs the overall service life of the device, but also has simple operation, reducing the maintenance cost and the complexity of repair.

[0047] The detachable design of the liquid storage chamber and the atomizer further enhances the convenience of use. Users can replace the liquid storage chamber separately according to their own needs. This design is especially suitable for frequent use. When the liquid to be atomized in the liquid storage chamber is exhausted or different liquids need to be replaced, the replacement operation can be quickly completed, improving the user experience and efficiency.

[0048] This detachable design has a significant effect on reducing the usage cost. Users do not need to purchase a brand-new electronic atomizer due to the damage or aging of some components. They only need to purchase the corresponding replacement parts, which greatly saves the usage cost and brings economic benefits to users.

[0049] III. Intelligence of the flow sensor and circuit control

[0050] By setting a flow sensor in the mist outlet chamber, the present invention realizes intelligent circuit control. When the user inhales and the air pressure in the mist outlet chamber changes, the flow sensor can accurately sense this air pressure change and start the circuit, thereby starting the atomization process. This design realizes precise working control according to the actual usage needs of users, improves the working efficiency and energy utilization efficiency of the electronic atomizer, and makes the atomization process more intelligent and automated.

[0051] IV. Advantages of lead-free materials and atomization performance

[0052] The present invention uses a lead-free piezoelectric ceramic microporous atomization device for atomization operation, and the atomization structure is prepared from lead-free materials, avoiding the potential release of harmful substances such as lead during the atomization process, reducing the harm to the human body, meeting the requirements of health and environmental protection, and enabling users not to worry about the inhalation risk of harmful substances during use, providing an important guarantee for the health of users. When it works, there is no chemical substance cracking, further ensuring the safety and health of the atomization process, making the generated atomized substances purer, avoiding harmful by-products generated by chemical substance cracking, and providing a safer atomization experience for users.

[0053] V. Improvement of the safety of the child lock

[0054] Adding a child lock to the housing effectively improves the safety of the product. In an environment with children, the child lock can prevent children from accidentally operating the electronic atomizer and avoid potential safety risks that may be caused by improper use by children, providing a reassuring use environment for users.

[0055] In summary, through multiple innovative designs, the electronic atomizer of the present invention shows significant beneficial effects in terms of detachable structure, safety, intelligent control, health and environmental protection, and atomization quality, providing users with an electronic atomization experience that is convenient to operate, safe and reliable, excellent in performance, and friendly to health. Brief Description of the Drawings

[0056] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein:

[0057] Figure 1 It is a structural diagram of an embodiment of an electronic atomizer based on a lead-free piezoelectric ceramic sheet provided by the present invention.

[0058] Figure 2 is Figure 1 A cross-sectional view of the electronic atomizer shown.

[0059] Figure 3 is Figure 1 A front view of the electronic atomizer shown.

[0060] Figure 4 is Figure 1 A rear view of the electronic atomizer shown.

[0061] Figure 5 is Figure 1 An exploded view of the electronic atomizer shown.

[0062] Figure 6 is Figure 1 A perspective schematic view of the electronic atomizer shown.

[0063] Figure 7 It is a structural diagram of a lead-free piezoelectric ceramic microporous atomization device in the electronic atomizer provided in the embodiment of the present invention.

[0064] Figure 8 is Figure 1 A structural diagram of the housing of the electronic atomizer shown.

[0065] Figure 9 It is an atomization particle size detection report of the electronic atomizer in the embodiment of the present invention. Detailed Embodiments

[0066] The present invention will be further described in detail below in conjunction with the specific embodiments. The provided embodiments are only for clarifying the present invention and not for limiting the scope of the present invention.

[0067] In the following description, detailed descriptions of well-known structures and technologies are omitted to highlight the innovative aspects of the present invention.

[0068] Embodiment

[0069] As Figures 1-8As shown in the figure, this embodiment provides an electronic atomizer based on a lead-free piezoelectric ceramic sheet, which includes a mist outlet chamber 1, a silica gel gasket 2, a liquid separation partition 3, a lead-free piezoelectric ceramic sheet 4, atomization micropores 5, an upper electrode 6, a lower electrode 7, a liquid storage chamber 8, a liquid replenishment port 9, a power supply electrode 10, a power receiving electrode 11, a main board 12, a battery 13, a housing 14, a flow sensor 15, a charging socket 16, a cartridge 17, and a child lock 18.

[0070] Among them, the lead-free piezoelectric ceramic microporous atomization device includes a silica gel gasket 2, a liquid separation partition 3, a lead-free piezoelectric ceramic sheet 4, atomization micropores 5, an upper electrode 6, and a lower electrode 7.

[0071] The housing 14, the liquid storage chamber 8, and the cartridge 17 form the entire atomizer body. The liquid storage chamber 8 is connected to the housing 14 through a magnetic attraction member and is also connected to the housing 14 through the cartridge 17. The liquid storage chamber 8 is provided with a liquid replenishment port 9. The liquid storage chamber 8 is connected to the atomization assembly by a screw thread. The atomization assembly integrates a lead-free piezoelectric ceramic sheet 4, an upper electrode 6, a lower electrode 7, and a mist outlet chamber 1. A silica gel gasket 2 is provided at the connection between the atomization assembly and the liquid storage chamber 2.

[0072] A flow sensor 15 is provided in the mist outlet chamber 1. The flow sensor 15 is connected to the main board 12. A charging socket 16 is provided outside the housing 14, and the charging socket 16 is connected to the main board 12. The main board 12 and the battery 13 electrically connected to the main board 12 are placed inside the housing 14. The main board 12 has a power supply electrode 10 and a power receiving electrode 11. Among them, the power supply electrode 10 is connected to the main board 12, and the power receiving electrode 11 is connected to the upper electrode 6 and the lower electrode 7. A child lock 18 is provided at the bottom of the housing 14.

[0073] The mist outlet chamber 1, the liquid storage chamber 8, and the atomization assembly are of a separable design, which is convenient for disassembling the atomization assembly and replacing the liquid to be atomized in the liquid storage chamber 8. The liquid replenishment port 9 provided on the liquid storage chamber 8 facilitates the replenishment and replacement of the liquid.

[0074] During use, the liquid to be atomized is pre-filled into the liquid storage chamber 8 through the liquid replenishment port 9. The liquid storage chamber 8 is connected to the housing 14 through a magnetic attraction member. After assembling a pair of cartridges 17, the child lock 18 at the bottom is opened. During use, by inhaling, the air pressure in the mist outlet chamber 1 changes. After the flow sensor 15 senses the air pressure change, the circuit is activated. The battery 13 provides a working voltage to the lead-free piezoelectric ceramic sheet 4 assembled with the liquid storage chamber 8 through the power supply electrode 10 and the power receiving electrode 11. After the lead-free piezoelectric ceramic sheet 4 is powered on, based on the atomization working principle, it can continuously atomize the liquid to be atomized in the liquid storage chamber 8 and discharge it from the atomization micropores 5 to the mist outlet chamber 1. Different needs of users can be met according to different liquids added.

[0075] Further, the lead-free piezoelectric ceramic sheet 4 is wrapped by two electrode layers, namely the upper electrode 6 and the lower electrode 7. A plurality of atomization micropores 5 are provided on the piezoelectric ceramic sheet 4, and the liquid in the liquid storage chamber 8 is introduced into the lead-free piezoelectric ceramic sheet 4 through the plurality of atomization micropores 5.

[0076] Further, the thickness of the piezoelectric ceramic sheet 4 is about 0.8 cm, the aperture of the atomization micropore 5 is about 2 μm, and the porosity is 40%. The atomization micropore 5 has a conical shape. After the flow sensor 15 senses the air pressure change and activates the circuit, the lead-free piezoelectric ceramic sheet 4 vibrates, the volume of the atomization micropore 5 changes, and then the liquid in the atomization micropore 5 is squeezed to achieve atomization.

[0077] The atomization particle size test was carried out using the Winner311XP spray laser particle size analyzer of Jinan Micro-Nano Particle Instrument Co., Ltd., and the results are as Figure 9 shown. The data analysis results are shown in Table 1.

[0078] Table 1

[0079]

[0080] Among them, Xv10, Xv50, and Xv90 are particle size parameter values based on volume distribution. Xv10 represents the particle size corresponding to the particles with a cumulative volume accounting for 10% of the total volume, Xv50 represents the particle size corresponding to the particles with a cumulative volume accounting for 50% of the total volume, Xv90 represents the particle size corresponding to the particles with a cumulative volume accounting for 90% of the total volume, and so on; Xn10, Xn50, and Xn90 are particle size parameter values based on number distribution. Xn10 represents the particle size corresponding to the particles when the cumulative number of particles reaches 10% of the total number on the cumulative curve of particle number distribution, Xn50 represents the particle size corresponding to the particles when the cumulative number of particles reaches 50% of the total number on the cumulative curve of particle number distribution, Xn90 represents the particle size corresponding to the particles when the cumulative number of particles reaches 90% of the total number on the cumulative curve of particle number distribution, and so on.

[0081] It can be seen from the data in Table 1 that in the proportion of fine particles, the proportion of <3μm is 26.376% but the contribution volume is limited. The proportion of <5μm is 73%, indicating that the particles dominating the volume are concentrated in the range of 3-5μm. The particle size of the particles passing through the lead-free piezoelectric ceramic atomization device is basically below 5μm, and the atomization efficiency and particle uniformity are excellent.

[0082] The further description of the electronic atomizer of the present invention is as follows:

[0083] The silica gel gasket 2 provided around the lead-free piezoelectric ceramic micropore atomization device can not only tightly fix the atomization carrier, but also play a buffering role for the atomization component vibrating at high speed and enhance the sealing performance.

[0084] Further, for the power consumption of the lead-free piezoelectric ceramic sheet 4, the power supply electrode 10 connects the main board 12 and the battery 13, and the lead-free ceramic atomizing sheet 4 is connected to the main board 12 through the power receiving electrode 11. Further, the flow sensor 15 is used as a trigger switch in the whole device and only performs simple air pressure detection.

[0085] Further, to meet the requirement of sustainable recycling, the battery 13 is a rechargeable battery. The main board 12 is electrically connected to the charging socket 16, and the charging socket 16 is arranged outside the housing 14. In this way, when charging is needed, it is only necessary to connect to an external adapter or a mobile power supply.

[0086] Further, to prevent children from accidentally touching it in daily life, a child lock 18 is arranged at the bottom of the housing. The child lock 18 is electrically connected to the main board 12 to achieve the pre-control of the whole device.

[0087] Further, to avoid possible scratches during use, all sharp corners of the electronic atomizer in this embodiment are processed in a rounded corner manner.

[0088] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0089] In the description of the present invention, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. An electronic atomizer based on piezoelectric ceramics, comprising: A housing having an accommodation cavity therein; An atomization assembly detachably mounted above the housing; An electronic control assembly including a battery and a main board disposed in the accommodation cavity of the housing and electrically connected, and the main board is electrically connected to the atomization assembly. Wherein, the atomization assembly includes a liquid storage chamber for storing the liquid to be atomized, a piezoelectric ceramic microporous atomization device, and a mist outlet chamber. An outlet port is provided at the lower end of the side wall of the liquid storage chamber. Two surfaces of the piezoelectric ceramic microporous atomization device are hermetically connected to the outlet port of the liquid storage chamber and the mist outlet chamber respectively. Wherein, the piezoelectric ceramic microporous atomization device includes a piezoelectric ceramic sheet and a liquid distribution partition coaxially stacked and connected. A first through hole is formed in the middle area of the piezoelectric ceramic sheet. The liquid distribution partition is located on the side of the piezoelectric ceramic sheet axially close to the liquid storage chamber, and a plurality of atomization micropores for flowing and filling the liquid to be atomized are provided in the range corresponding to the first through hole.

2. The electronic atomizer according to claim 1, wherein, The atomization micropores are cylindrical, and the aperture of the atomization micropores is 0.05 - 10 microns, preferably 0.5 - 4 microns; or The atomization micropores are conical, with the large diameter end located on the side close to the liquid storage chamber, the inner diameter is 2 - 25 microns; the small diameter end is close to the mist outlet chamber, and the inner diameter is 0.5 - 4 microns. Preferably, the porosity of the atomization micropores formed in the piezoelectric ceramic sheet is 5% - 80%, preferably 10% - 60%. Preferably, the thickness of the piezoelectric ceramic sheet is 0.1 - 1 cm, preferably 0.5 - 1 cm.

3. The electronic atomizer according to claim 1, wherein, The piezoelectric ceramic sheet is made of lead-free piezoelectric ceramics, preferably potassium sodium niobate (KNN)-based lead-free piezoelectric ceramics.

4. The electronic atomizer according to claim 1, wherein, The side wall of the liquid storage chamber is provided with a liquid inlet for adding the liquid to be atomized into the liquid storage chamber.

5. The electronic atomizer according to claim 1, wherein, The electronic control assembly further includes an upper electrode and a lower electrode electrically connected to the main board to supply power to the piezoelectric ceramic microporous atomization device. Preferably, the upper electrode is disposed between the piezoelectric ceramic microporous atomization device and the mist outlet chamber, and a second through hole is opened in the range corresponding to the first through hole. The lower electrode is arranged around the liquid distribution partition in a concentric circle manner.

6. The electronic atomizer according to claim 1, wherein, The liquid storage chamber is connected to the housing through a magnetic attraction member; and / or, the connection between the liquid storage chamber and the housing is achieved by providing card slots on the outer walls of both, and using one or more external card shells to connect the two.

7. The electronic atomizer according to claim 1, wherein, The mist outlet chamber is threadedly connected to the liquid storage chamber, and the lower electrode, the piezoelectric ceramic microporous atomization device, and the upper electrode are clamped between the two. Preferably, a silica gel gasket is further provided between the liquid storage chamber and the lower electrode.

8. The electronic atomizer according to claim 1, wherein The electronic control assembly further includes a flow sensor disposed in the mist outlet chamber. The flow sensor is electrically connected to the main board and is configured to sense the air pressure change in the mist outlet chamber caused by the user's inhalation action, and accordingly turn on the circuit to enable the battery to provide a working voltage to the piezoelectric ceramic sheet, thereby driving the piezoelectric ceramic sheet to perform the atomization operation.

9. The electronic atomizer according to any one of claims 1 to 8, wherein, The housing is equipped with a charging jack, and the charging jack is electrically connected to the main board to charge the battery. Preferably, a child lock electrically connected to the main board is further provided on the housing.

10. The electronic atomizer according to any one of claims 1 to 8, wherein, The battery is a detachable lithium battery; Preferably, the shape of the electronic atomizer is a cylinder or a cuboid with all sharp corners rounded.

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