Atomizing piece assembly and atomizing device

Abstract

The utility model relates to atomization piece technical field discloses an atomization piece assembly and atomization device, atomization piece assembly includes flexible plastic piece, piezoelectric ceramic piece and metal conductive sheet, and flexible plastic piece is equipped with a plurality of atomization holes, piezoelectric ceramic piece sets up at one side of flexible plastic piece, and is equipped with the mist outlet, and the mist outlet and a plurality of atomization holes are opposite, metal conductive sheet sets up at one side of flexible plastic piece and is equipped with the liquid inlet, and the liquid inlet and a plurality of atomization holes are opposite, thereby can promote the service life of atomization piece assembly.

Description

Technical Field

[0001] This utility model relates to the field of atomizing plate technology, specifically to an atomizing plate assembly and an atomizing device. Background Technology

[0002] Current atomizing plate assemblies typically include a piezoelectric ceramic plate and a metal diaphragm. By creating a microporous structure on the metal diaphragm, the piezoelectric ceramic plate transmits high-frequency vibrations to the metal diaphragm through the piezoelectric effect when energized, causing the microporous structure on the metal diaphragm to break up the liquid and form mist.

[0003] Metal diaphragms are prone to breakage at the microporous structure due to brittleness during high-frequency vibration, which affects the service life of the atomizing plate assembly. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an atomizing plate assembly that can improve the service life of the atomizing plate assembly.

[0005] This utility model also proposes an atomizing device having the above-mentioned atomizing plate assembly.

[0006] According to a first aspect of the present invention, an atomizing sheet assembly includes a flexible plastic sheet, a piezoelectric ceramic sheet, and a metal conductive sheet. The flexible plastic sheet has a plurality of atomizing holes. The piezoelectric ceramic sheet is disposed on one side of the flexible plastic sheet and has a mist outlet hole, which is opposite to the plurality of atomizing holes. The metal conductive sheet is disposed on the side of the flexible plastic sheet opposite to the piezoelectric ceramic sheet and has a liquid inlet hole, which is opposite to the plurality of atomizing holes.

[0007] The atomizing sheet assembly according to the embodiments of this utility model has at least the following beneficial effects: Compared with the related art where the atomizing holes are set on a metal diaphragm, the atomizing sheet assembly in this application embodiment sets several atomizing holes on a flexible plastic sheet. The flexible plastic sheet is a flexible material with better toughness, and can generate elastic deformation during high-frequency vibration, making it less prone to breakage. This can extend the service life of the atomizing sheet assembly. Moreover, the elastic deformation generated by the flexible plastic sheet during high-frequency vibration can adjust the aperture of the atomizing holes. The aperture of the atomizing holes can change with vibration, thereby improving the situation of hole blockage, improving the atomization effect of the atomizing sheet assembly, and reducing noise. In addition, by setting the flexible plastic sheet between the metal conductive sheet and the piezoelectric ceramic sheet, both of which are rigid materials, it helps to limit the position of the flexible plastic sheet, improving the situation of displacement or excessive deformation of the flexible plastic sheet during vibration, and improving the working stability of the atomizing sheet assembly.

[0008] According to some embodiments of the present invention, the flexible plastic sheet includes an outer ring portion and a convex hull structure. The outer ring portion is pressed against the piezoelectric ceramic sheet and the metal conductive sheet. The convex hull structure is connected to the inner ring side of the outer ring portion and at least partially protrudes into the mist outlet hole. The convex hull structure surrounds a liquid inlet cavity, which has an open cavity opening that communicates with the liquid inlet hole. A plurality of atomizing holes are disposed on the convex hull structure.

[0009] According to some embodiments of the present invention, the metal conductive sheet is provided with an annular flange surrounding the liquid inlet hole; the annular flange protrudes from the cavity opening into the liquid inlet cavity and abuts against the inner wall of the liquid inlet cavity.

[0010] According to some embodiments of this utility model, the inner diameter of the annular flange gradually decreases from the direction of the metal conductive sheet towards the piezoelectric ceramic sheet.

[0011] According to some embodiments of the present invention, the convex hull structure includes an annular connecting wall and an end wall; one end of the annular connecting wall is connected to the outer ring portion, and the other end is connected to the end wall to enclose the inlet and outlet liquid chamber, with the chamber opening and the end wall spaced apart and opposite to each other; at least part of the end wall is located inside the mist outlet hole, and a plurality of atomizing holes are provided on the end wall.

[0012] According to some embodiments of this utility model, both the mist outlet and the liquid inlet are circular holes; the diameter of the liquid inlet is smaller than the diameter of the mist outlet.

[0013] According to some embodiments of this utility model, the flexible plastic sheet is a polyimide film.

[0014] According to some embodiments of this utility model, the metal conductive sheet is a stainless steel sheet.

[0015] According to some embodiments of the present invention, the thickness of the piezoelectric ceramic sheet is greater than the thickness of the metal conductive sheet, and / or the thickness of the flexible plastic sheet is less than the thickness of the piezoelectric ceramic sheet.

[0016] The atomizing device according to a second aspect of the present invention includes the atomizing plate assembly in any of the above embodiments.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 A schematic diagram of the atomizing plate assembly provided in an embodiment of the present invention is shown;

[0020] Figure 2 It shows Figure 1Exploded view of the atomizing plate assembly;

[0021] Figure 3 It shows Figure 1 A cross-sectional view of the atomizing plate assembly;

[0022] Figure 4 It shows Figure 3 A magnified structural diagram of point IV in the middle.

[0023] Figure label:

[0024] Atomizing plate assembly 100; metal conductive sheet 110; liquid inlet hole 111; annular flange 113; flexible plastic sheet 130; outer ring 131; convex bulge structure 133; liquid inlet cavity 1331; annular connecting part 1335; end wall 1337; atomizing hole 1339; piezoelectric ceramic sheet 150; mist outlet hole 151. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] Please see Figure 1 This application provides an atomizing device, which may include an atomizing plate assembly 100. The atomizing device can atomize liquid by vibrating the atomizing plate assembly 100 to form a piezoelectric effect, and spray out the atomized mist through the atomizing plate assembly 100. The specific principle can be referred to the prior art, and will not be repeated here.

[0031] The nebulizer can be a medical nebulizer, a humidifying nebulizer, or other nebulizing devices.

[0032] Please see Figures 2 to 4 In some embodiments, the atomizing sheet assembly 100 includes a metal conductive sheet 110, a flexible plastic sheet 130, and a piezoelectric ceramic sheet 150.

[0033] Among them, flexible plastic sheet 130 can refer to a plastic sheet that can have elastic deformation.

[0034] A piezoelectric ceramic sheet 150 is disposed on one side of a flexible plastic sheet 130, and a metal conductive sheet 110 is disposed on the side of the flexible plastic sheet 130 opposite to the piezoelectric ceramic sheet 150, i.e., the flexible plastic sheet 130 is disposed between the piezoelectric ceramic sheet 150 and the conductive metal sheet. The piezoelectric ceramic sheet 150 and the metal conductive sheet 110 can cooperate to form positive and negative electrodes, so as to generate an electric field after energization to excite the piezoelectric effect and realize the atomization of the liquid. The specific principle can be referred to the prior art, and will not be elaborated here.

[0035] The piezoelectric ceramic sheet 150 is provided with a mist outlet 151, the flexible plastic sheet 130 is provided with a plurality of atomizing holes 1339, and the metal conductive sheet 110 is provided with a liquid inlet hole 111. The mist outlet 151 and the plurality of atomizing holes 1339 are opposite to each other, and the liquid inlet hole 111 and the plurality of atomizing holes 1339 are opposite to each other. Thus, the liquid inlet hole 111, the plurality of atomizing holes 1339 and the mist outlet 151 can be connected in sequence. The piezoelectric ceramic sheet 150 can transmit high-frequency vibration to the flexible plastic sheet 130. When the flexible plastic sheet 130 vibrates at high frequency, it can break the liquid through the plurality of atomizing holes 1339 to form mist, and then spray the mist out through the mist outlet 151.

[0036] It should be noted that the mist outlet 151 is opposite to several atomizing holes 1339, and the liquid inlet hole 111 is opposite to several atomizing holes 1339. The term "opposite" means that the projections of the mist outlet 151, several atomizing holes 1339 and liquid inlet hole 111 on a plane perpendicular to the axis of the atomizing plate assembly 100 at least partially overlap.

[0037] Compared to related technologies that place atomizing holes on a metal diaphragm, the atomizing sheet assembly 100 in this embodiment places a plurality of atomizing holes 1339 on a flexible plastic sheet 130. The flexible plastic sheet 130 is a flexible material with better toughness, capable of elastic deformation during high-frequency vibration, and is not easily broken, thereby extending the service life of the atomizing sheet assembly 100. Furthermore, the elastic deformation of the flexible plastic sheet 130 during high-frequency vibration can adjust the aperture of the atomizing holes 1339. The aperture can change with vibration, thereby improving the pore blockage and enhancing the atomization effect of the atomizing plate assembly 100, while also reducing noise. In addition, by placing the flexible plastic sheet 130 between the metal conductive sheet 110 and the piezoelectric ceramic sheet 150, both of which are rigid materials, the position of the flexible plastic sheet 130 is limited, improving the situation of displacement or excessive deformation of the flexible plastic sheet 130 during vibration and enhancing the stability of the atomizing plate assembly 100 during operation.

[0038] In addition, the atomization effect can be improved by optimizing the pore size and distribution density of the atomizing orifice 1339, which helps the liquid medicine to be atomized more stably and evenly, reduces the impact on the chemical structure and active ingredients of the liquid medicine, and ensures the efficacy of the liquid medicine.

[0039] For example, the atomizing hole 1339 can be a micron-sized atomizing hole 1339.

[0040] In some embodiments, the flexible plastic sheet 130 can be a polyimide film, thereby the flexible plastic sheet 130 can have better high temperature resistance and corrosion resistance, and the flexible plastic sheet 130 has better mechanical properties and better elastic deformation performance, further reducing the possibility of breakage during vibration and reducing the noise generated during atomization.

[0041] In addition, the flexible plastic sheet 130, made of polyimide film, can reduce the foam generated during high-frequency vibration, achieving a foam-free atomization effect. This helps improve the anti-dry-burning performance of the atomization device and enhances the service life and safety of the atomization sheet and device.

[0042] As an example, the atomizing device may include a main control module, an anti-dry-burn probe, and an atomizing body. The atomizing body may have a receiving cavity for containing liquid. The atomizing plate assembly 100 may be installed on the atomizing body to atomize the liquid in the atomizing cavity. The anti-dry-burn probe may be partially located within the receiving cavity. The atomizing plate assembly 100 can transmit AC signals to the anti-dry-burn probe through the liquid in the receiving cavity. The anti-dry-burn probe can receive the AC signals and transmit them to the main control module. For example, the main control module may include a controller and a printed circuit board assembly (PCBA). The controller may be connected to a conversion circuit on the PCBA, and the anti-dry-burn probe may be connected to the conversion circuit on the PCBA to transmit AC signals to the controller through the conversion circuit.

[0043] When the anti-dry-burn probe fails to detect an AC signal, the controller can output a low-liquid signal to alert the user that the cavity is low on liquid. This low-liquid signal can be an audio or visual signal. In this embodiment, the flexible plastic sheet 130 uses a polyimide diaphragm, which reduces foaming during high-frequency vibration, thus minimizing foam within the cavity. This allows the anti-dry-burn probe to more accurately receive AC signals through the liquid in the cavity, reducing the likelihood of AC signals being transmitted to the probe via foam. This reduces interference from foam, enabling the anti-dry-burn probe to more accurately detect whether the cavity is low on liquid, reducing the risk of dry-burning due to low liquid levels.

[0044] In some embodiments, the metal conductive sheet 110 can be a stainless steel sheet, which helps to reduce the rusting of the metal conductive sheet 110 and can improve the oxidation or corrosion of the metal conductive sheet 110, thus helping to extend the service life of the atomizing sheet assembly 100.

[0045] In some embodiments, the metal conductive sheet 110 may include a metal connector and a metal body.

[0046] The liquid inlet 111 can be located on the metal body, and the flexible plastic sheet 130 can be located between the metal body and the piezoelectric ceramic sheet 150.

[0047] Metal connectors can protrude from the outer periphery of a metal body and are used to connect electrical wires.

[0048] In some embodiments, the piezoelectric ceramic sheet 150 may be provided with a welding area for welding wires.

[0049] In some embodiments, the thickness of the piezoelectric ceramic sheet 150 can be greater than the thickness of the metal conductive sheet 110. This can increase the structural strength of the piezoelectric ceramic sheet 150 and improve the situation where the piezoelectric ceramic sheet 150 breaks during vibration. In addition, the thickness of the metal conductive sheet 110 can be reduced, which helps to reduce the overall size and weight of the atomizing sheet assembly 100 and can reduce manufacturing costs.

[0050] In some embodiments, the thickness of the flexible plastic sheet 130 can be less than the thickness of the piezoelectric ceramic sheet 150, which helps the flexible plastic sheet 130 to have better elastic deformation capability, avoids the situation where the elastic deformation of the flexible plastic sheet 130 is affected due to excessive thickness, and ensures the atomization effect of the atomization hole 1339.

[0051] In some embodiments, the flexible plastic sheet 130 may include an outer ring portion 131 and a convex hull structure 133.

[0052] The convex hull structure 133 can be connected to the inner ring side of the outer ring portion 131.

[0053] As an example, the outer ring portion 131 may have an inner ring side and an outer ring side, and the convex hull structure 133 may have an outer ring side, with the outer ring side of the convex hull structure 133 being connected to the inner ring side of the outer ring portion 131.

[0054] It should be noted that the convex hull structure 133 and the outer ring portion 131 can be integrally formed. There may or may not be a dividing line at the junction between the convex hull structure 133 and the outer ring portion 131. The specific choice can be made according to the requirements.

[0055] The outer ring 131 can press against the piezoelectric ceramic sheet 150 and the metal conductive sheet 110, thereby limiting the position of the flexible plastic sheet 130 by restricting the position of the outer ring 131, improving the displacement or excessive deformation of the flexible plastic sheet 130 during vibration, and enhancing the stability of the atomizing sheet assembly 100.

[0056] The convex hull structure 133 can protrude at least partially into the mist outlet 151, and a plurality of atomizing holes 1339 can be set in the convex hull structure 133. Thus, the convex hull structure 133 can guide the flow of liquid, help control the direction of mist spraying, and make the sprayed mist more concentrated, thereby improving the atomization effect of the atomizing plate assembly 100.

[0057] Specifically, the convex hull structure 133 can surround the liquid inlet cavity 1331, which can have an open cavity opening that can connect to the liquid inlet hole 111. Several atomizing holes 1339 can connect to the liquid inlet cavity 1331. Liquid can enter the liquid inlet cavity 1331 from the liquid inlet hole 111 through the cavity opening. The flexible plastic sheet 130 vibrates to atomize the liquid and spray out the mist. The liquid inlet hole 111, the liquid inlet cavity 1331, and the atomizing holes 1339 can form a defined guide channel, thereby better controlling the direction of mist spraying and making the mist more concentrated, which helps to improve the atomization effect of the atomizing sheet assembly 100.

[0058] It should be noted that since the convex hull structure 133 protrudes at least partially into the mist outlet 151, the convex hull structure 133 can block the gap between the flexible plastic sheet 130 and the piezoelectric ceramic sheet 150, which helps to reduce the liquid accumulation in the gap between the flexible plastic sheet 130 and the piezoelectric ceramic sheet 150, and further improves the atomization effect.

[0059] In some embodiments, the metal conductive sheet 110 may be provided with an annular flange 113, which may be arranged around the liquid inlet hole 111.

[0060] As an example, the annular flange 113 can protrude from the wall of the inlet hole 111 facing the flexible plastic sheet 130 towards the flexible plastic sheet 130, and the inner circumferential surface of the annular flange 113 and the inner wall surface of the inlet hole 111 can be connected.

[0061] As another example, the annular flange 113 can be connected to the inner wall of the liquid inlet hole 111 and protrude from the liquid inlet hole 111 toward the flexible plastic sheet 130. Understandably, the inner peripheral wall of the annular flange 113 can be formed as the inner wall of the liquid inlet hole 111, and the liquid enters the interior of the annular flange 113 when it enters the liquid inlet hole 111. Specifically, the inner peripheral surface of the annular flange 113 can be connected to the end face of the metal conductive sheet 110 facing away from the piezoelectric ceramic sheet 150, and the outer peripheral surface of the annular flange 113 can be connected to the end face of the metal conductive sheet 110 facing the flexible piezoelectric ceramic sheet 150.

[0062] Understandably, the annular flange 113 can protrude from the metal body.

[0063] The annular flange 113 can protrude from the cavity opening into the liquid inlet cavity 1331 and abut against the inner wall of the liquid inlet cavity 1331. Thus, the annular flange 113 can support the inner wall of the liquid inlet cavity 1331 to support the entire convex structure 133. This helps to avoid the situation where the elastic deformation of the convex structure 133 during vibration causes deformation of the convex structure 133 and affects the atomization effect.

[0064] It should be noted that the convex hull structure 133 can be formed in multiple ways.

[0065] As an example, when manufacturing the flexible plastic sheet 130, a convex structure 133 is pre-formed on the flexible plastic sheet 130 by injection molding, stamping or other manufacturing methods, and then the atomizing sheet assembly 100 is assembled.

[0066] As another example, the flexible plastic sheet 130 can directly adopt a planar sheet structure (such as...). Figure 2 As shown), during the assembly of the atomizing sheet assembly 100, the annular flange 113 on the metal conductive sheet 110 abuts against the flexible plastic sheet 130, causing the flexible plastic sheet 130 to deform. Thus, the annular flange 113 can abut against the flexible plastic sheet 130 to create a protruding structure 133 (as shown). Figure 4 As shown), this eliminates the need to pre-manufacture the convex hull structure 133, which helps reduce the manufacturing cost of the flexible plastic sheet 130.

[0067] In some embodiments, the inner diameter of the annular flange 113 can gradually decrease from the direction of the metal conductive sheet 110 toward the piezoelectric ceramic sheet 150, thereby forming a conical surface on the inner circumferential surface of the annular flange 113, which helps to further improve the flow guiding effect, the mist output direction of the atomizing plate assembly 100 is more concentrated, and the atomizing plate assembly 100 can have a better mist output effect.

[0068] In some embodiments, the outer diameter of the annular flange 113 may also gradually decrease from the direction of the metal conductive sheet 110 toward the piezoelectric ceramic sheet 150, which helps to make the thickness of the annular flange 113 more uniform.

[0069] As an example, the annular flange 113 may be generally conical, and the outer and inner circumferential surfaces of the annular flange 113 may be generally parallel.

[0070] In some embodiments, the convex hull structure 133 may include an annular connecting wall and an end wall 1337.

[0071] One end of the annular connecting wall is connected to the outer ring 131, and the other end is connected to the end wall 1337 to enclose the liquid inlet cavity 1331. The cavity opening and the end wall 1337 are spaced apart and opposite each other.

[0072] As an example, the outer peripheral surface of the annular flange 113 can abut against the annular connecting wall, and the end of the annular flange 113 can abut against the end wall 1337, thereby supporting the entire convex structure 133 and avoiding obstruction of the end wall 1337.

[0073] The end wall 1337 is at least partially located within the mist outlet 151, and a plurality of atomizing holes 1339 are disposed on the end wall 1337. This allows the atomized mist from the atomizing holes 1339 to be directly ejected from the mist outlet 151, helping to reduce the likelihood of mist entering the gap between the flexible plastic sheet 130 and the piezoelectric ceramic sheet 150. Furthermore, placing the atomizing holes 1339 on the end wall 1337 helps prevent liquid accumulation due to the atomizing holes 1339 forming grooves with the annular flange 113, which would otherwise occur when the atomizing holes 1339 are located on the annular connecting wall. This also ensures a smoother inner surface of the annular connecting wall, which helps to increase the liquid flow rate and improve the atomization effect.

[0074] The fact that the end wall 1337 is at least partially located inside the mist outlet 151 can mean that the outer wall surface of the end wall 1337 facing away from the cavity is located inside the liquid inlet 111, and the inner wall surface of the end wall 1337 facing the cavity can be located inside or outside the liquid inlet 111.

[0075] In some embodiments, both the mist outlet 151 and the liquid inlet 111 can be circular holes. The diameter of the liquid inlet 111 can be smaller than the diameter of the mist outlet 151, thereby better guiding the flow of liquid and reducing the situation where liquid is blocked by the flexible plastic sheet 130 in the liquid inlet 111, which helps the liquid flow more smoothly.

[0076] In the atomizing plate assembly 100 and atomizing device provided in this application embodiment, compared with the related technology where the atomizing holes are set on a metal diaphragm, the atomizing plate assembly 100 in this application embodiment sets a plurality of atomizing holes 1339 on a flexible plastic sheet 130. The flexible plastic sheet 130 is a flexible material with better toughness, can generate elastic deformation during high-frequency vibration, and is not easily broken, thereby extending the service life of the atomizing plate assembly 100. Moreover, the elastic deformation generated by the flexible plastic sheet 130 during high-frequency vibration can adjust the atomizing holes 1339. The aperture of the atomizing hole 1339 can change with vibration, thereby improving the clogging situation, enhancing the atomization effect of the atomizing plate assembly 100, and reducing noise. In addition, by placing the flexible plastic sheet 130 between the metal conductive sheet 110 and the piezoelectric ceramic sheet 150, both of which are rigid materials, the position of the flexible plastic sheet 130 is limited, improving the displacement or excessive deformation of the flexible plastic sheet 130 during vibration, and enhancing the stability of the atomizing plate assembly 100.

[0077] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An atomizing plate assembly, characterized in that, include: A flexible plastic sheet, wherein the flexible plastic sheet is provided with a plurality of atomizing holes; A piezoelectric ceramic sheet, wherein the piezoelectric ceramic sheet is disposed on one side of the flexible plastic sheet and has a mist outlet, the mist outlet being opposite to the plurality of atomizing holes; and A metal conductive sheet is disposed on the side of the flexible plastic sheet opposite to the piezoelectric ceramic sheet, and has a liquid inlet hole, which is opposite to the plurality of atomizing holes.

2. The atomizing plate assembly according to claim 1, characterized in that, The flexible plastic sheet includes an outer ring portion and a convex structure, wherein the outer ring portion is pressed against the piezoelectric ceramic sheet and the metal conductive sheet; The convex hull structure is connected to the inner ring side of the outer ring portion and at least partially protrudes into the mist outlet hole; The convex hull structure surrounds a liquid inlet cavity, which has an open opening that communicates with the liquid inlet hole; The plurality of atomizing holes are disposed on the convex hull structure.

3. The atomizing plate assembly according to claim 2, characterized in that, The metal conductive sheet has an annular flange that surrounds the liquid inlet hole. The annular flange protrudes from the cavity opening into the liquid inlet cavity and abuts against the inner wall of the liquid inlet cavity.

4. The atomizing plate assembly according to claim 3, characterized in that, The inner diameter of the annular flange gradually decreases from the metal conductive sheet towards the piezoelectric ceramic sheet.

5. The atomizing plate assembly according to any one of claims 2 to 4, characterized in that, The convex hull structure includes an annular connecting wall and an end wall; One end of the annular connecting wall is connected to the outer ring portion, and the other end is connected to the end wall to enclose the liquid inlet cavity, with the cavity opening and the end wall spaced apart and opposite to each other; The end wall is at least partially located within the mist outlet, and the plurality of atomizing holes are disposed on the end wall.

6. The atomizing plate assembly according to any one of claims 1 to 4, characterized in that, Both the mist outlet and the liquid inlet are circular holes; The diameter of the liquid inlet hole is smaller than the diameter of the mist outlet hole.

7. The atomizing plate assembly according to any one of claims 1 to 4, characterized in that, The flexible plastic sheet is a polyimide film.

8. The atomizing plate assembly according to any one of claims 1 to 4, characterized in that, The conductive metal sheet is made of stainless steel.

9. The atomizing plate assembly according to any one of claims 1 to 4, characterized in that, The thickness of the piezoelectric ceramic sheet is greater than the thickness of the metal conductive sheet, and / or the thickness of the flexible plastic sheet is less than the thickness of the piezoelectric ceramic sheet.

10. An atomizing device, characterized in that, Includes the atomizing plate assembly according to any one of claims 1 to 9.

Images