Atomization mechanism and atomizer

Abstract

The atomization mechanism comprises a shell, an acoustic impedance matching component and an ultrasonic atomization piece, the acoustic impedance matching component and the ultrasonic atomization piece are installed in the shell, a first through hole is formed in the top of the shell, and the first through hole, the acoustic impedance matching component and the ultrasonic atomization piece are sequentially arranged from top to bottom; the first through hole is used for providing a channel communicated to the upper part of the acoustic impedance matching component for the to-be-atomized liquid, and the acoustic impedance values of the ultrasonic atomization sheet, the acoustic impedance matching component and the to-be-atomized liquid are sequentially decreased. According to the ultrasonic atomization mechanism, the acoustic impedance values of the ultrasonic atomization sheet, the acoustic impedance matching component and the liquid to be atomized are set to be sequentially decreased, the energy loss in ultrasonic propagation is reduced according to the acoustic impedance matching principle, the ultrasonic energy utilization rate is remarkably improved, and compared with a traditional atomization mechanism, the atomization efficiency is remarkably improved, and fog drops are more uniform.

Description

Technical Field

[0001] The present invention relates to the technical field of atomizing devices, and in particular to an atomizing mechanism and an atomizer. Background Art

[0002] Efficient and stable atomization mechanisms play a crucial role in numerous applications requiring the conversion of liquids into mist, such as medical atomization therapy, industrial humidification, and environmental purification. Traditional atomization mechanisms have significant limitations in atomization efficiency and droplet uniformity. For example, in medical atomization therapy, poor atomization can prevent the drug from effectively reaching the target area, such as the lungs, thus impacting treatment effectiveness. In industrial humidification scenarios, uneven atomization can cause localized humidity abnormalities, impacting product quality. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of low atomization efficiency and uneven atomized particles of atomization equipment in the prior art, and to provide an atomization mechanism and an atomizer.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] In a first aspect, an embodiment of the present invention provides an atomization mechanism, comprising: a shell, an acoustic impedance matching component and an ultrasonic atomization sheet, wherein the acoustic impedance matching component and the ultrasonic atomization sheet are installed in the shell, and a first through hole is provided on the top of the shell, wherein the first through hole, the acoustic impedance matching component and the ultrasonic atomization sheet are arranged in sequence from top to bottom, and the first through hole is used to provide a channel for the liquid to be atomized to connect to the top of the acoustic impedance matching component, and the acoustic impedance values ​​of the ultrasonic atomization sheet, the acoustic impedance matching component and the liquid to be atomized decrease in sequence.

[0006] In one embodiment, the acoustic impedance matching component includes n acoustic impedance matching layers arranged in sequence from top to bottom, and the acoustic impedance matching layers are located between the ultrasonic atomization sheet and the anti-corrosion isolation membrane; the acoustic impedance values ​​of the n acoustic impedance matching layers decrease in sequence from bottom to top, and are located between the acoustic impedance values ​​of the ultrasonic atomization sheet and the anti-corrosion isolation membrane.

[0007] In one embodiment, the acoustic impedance value of the ultrasonic atomizer is Z0, and the acoustic impedance value of the liquid to be atomized is Z n+1 The acoustic impedance value of the kth layer of the acoustic impedance matching layer is 0.9Z k to 1.1Z k , Z k =Z0^{1-k / (n+1)}*Z n+1 ^{k / (n+1)}, (k=1,2,...,n).

[0008] In one embodiment, the wavelength of the ultrasonic wave emitted by the ultrasonic atomizer in the kth layer of the acoustic impedance matching layer is λ k The thickness of the acoustic impedance matching layer of the kth layer is 0.95d k to 1.05d k , d k =λ k / 4.

[0009] In one embodiment, the nth acoustic impedance matching layer from bottom to top is an anti-corrosion isolation film, and the anti-corrosion isolation film is located between the first through hole and the ultrasonic atomization sheet.

[0010] In one embodiment, the first acoustic impedance matching layer from bottom to top is a protective layer, and the protective layer is adhered to the upper surface of the ultrasonic atomizing sheet.

[0011] In one embodiment, the number of the acoustic impedance matching layers is three, wherein the second acoustic impedance matching layer is a liquid medium disposed between the anti-corrosion isolation film and the protective layer.

[0012] In one embodiment, a sealed cavity is formed between the anti-corrosion isolation membrane, the shell, and the protective layer, and the liquid medium is contained in the sealed cavity.

[0013] In one embodiment, an edge of the anti-corrosion isolation membrane is connected to the housing, and a middle portion of the anti-corrosion isolation membrane is parallel to the ultrasonic atomization sheet.

[0014] In one embodiment, the shell is provided with a second through hole between the anti-corrosion isolation membrane and the protective layer, and a transition zone transitioning from top to bottom is provided between the edge and the middle part of the anti-corrosion isolation membrane. The middle part and the transition zone of the anti-corrosion isolation membrane are located in the second through hole, so that the cross-section of the sealing cavity is concave.

[0015] In one embodiment, an elastic shell is installed in the housing, the ultrasonic atomizing sheet is installed in the elastic shell, and the elastic shell is provided with an air cavity below the ultrasonic atomizing sheet.

[0016] In one embodiment, the shell includes a cover body and a base connected to the bottom of the cover body, the edge of the anti-corrosion isolation membrane is pressed between the cover body and the base, the first through hole is provided at the top of the cover body, the second through hole is provided at the top of the base, and the ultrasonic atomization sheet is installed in the base.

[0017] In one embodiment, a sealing ring is provided on the inner side of the cover, and the edge of the anti-corrosion isolation membrane is pressed between the sealing ring and the base.

[0018] In one embodiment, an annular connecting groove is provided on the top of the base, and a first connecting plate is provided on the outer periphery of the bottom of the cover. The first connecting plate is arranged in an annular shape and is ultrasonically welded to the annular connecting groove.

[0019] In one embodiment, a second connecting plate extends upward from the base, the second connecting plate is arranged in an annular shape and is embedded in the cover body, and the sealing ring is tightly abutted against the inner side of the second connecting plate; an elastic reinforcement ring is also sleeved on the outer periphery of the cover body.

[0020] In a second aspect, an embodiment of the present invention further provides an atomizer, comprising the atomizing mechanism as described above, and also comprising an atomizing cup, wherein the atomizing mechanism is installed below the atomizing cup, and the inner cavity of the atomizing cup is connected to the first through hole.

[0021] The atomization mechanism and atomizer of the present invention have the following beneficial effects compared with the prior art: by setting the acoustic impedance values ​​of the ultrasonic atomization sheet, the acoustic impedance matching component and the liquid to be atomized to decrease in sequence, the acoustic impedance matching principle is utilized to reduce the energy loss in ultrasonic propagation, thereby significantly improving the energy utilization rate of ultrasonic waves. Compared with traditional atomization mechanisms, the atomization efficiency is significantly improved, and the droplets are more uniform.

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the structure of the atomization mechanism provided by an embodiment of the present invention from a first perspective;

[0025] Figure 2 A schematic structural diagram of the atomization mechanism provided by an embodiment of the present invention from a second perspective;

[0026] Figure 3 for Figure 2 AA cross-sectional view;

[0027] Figure 4 An exploded diagram of an atomization mechanism provided in an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the base structure of the atomization mechanism provided in an embodiment of the present invention;

[0029] Figure 6 for Figure 5 Cross-sectional view of BB;

[0030] Figure 7 A schematic structural diagram of an atomizer provided in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of an explosion of an atomizer provided in an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 10. Shell; 101. First through hole; 102. Second through hole; 103. Cover; 1031. First connecting plate; 104. Base; 1041. Annular plate; 1042. Annular connecting groove; 1043. Second connecting plate; 20. Acoustic impedance matching component; 201. Anti-corrosion isolation membrane; 2011. Edge; 2012. Middle part; 2013. Transition zone; 30. Ultrasonic atomizer plate 30; 40. Sealing cavity; 50. Elastic shell; 501. Air cavity; 60. Pressing plate; 70. Shielding cover; 80. Control board; 90. Sealing ring; 100. Elastic reinforcement ring; 110. Atomizer cup; 1101. Mounting hole. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 should not be understood as limiting the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0037] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0040] See also Figures 1 to 6As shown, an embodiment of the present invention provides an atomization mechanism, including: a shell 10, an acoustic impedance matching component 20 and an ultrasonic atomization sheet 30. The acoustic impedance matching component 20 and the ultrasonic atomization sheet 30 are installed in the shell 10. A first through hole 101 is provided on the top of the shell 10. The first through hole 101, the acoustic impedance matching component 20 and the ultrasonic atomization sheet 30 are arranged in sequence from top to bottom. The first through hole 101 is used to provide a channel for the liquid to be atomized to connect to the top of the acoustic impedance matching component 20. The acoustic impedance values ​​of the ultrasonic atomization sheet 30, the acoustic impedance matching component 20 and the liquid to be atomized decrease in sequence.

[0041] Specifically, the core design of this embodiment is to set the acoustic impedance values ​​of the ultrasonic atomizing sheet 30, the acoustic impedance matching component 20 and the liquid to be atomized to decrease in sequence, and use the acoustic impedance matching principle to reduce the energy loss in ultrasonic wave propagation, thereby improving the atomization efficiency. When the ultrasonic atomizing sheet 30 is powered on, ultrasonic waves are generated and propagate upward. Since the acoustic impedance value of the acoustic impedance matching component 20 is between the ultrasonic atomizing sheet 30 and the liquid to be atomized and is in a decreasing trend, ultrasonic waves can be smoothly transmitted from the ultrasonic atomizing sheet 30 to the liquid to be atomized. Under the action of ultrasonic waves, the water molecules on the surface of the liquid to be atomized obtain enough energy to overcome the surface tension and are atomized into tiny droplets. This embodiment significantly improves the utilization rate of ultrasonic energy through the acoustic impedance matching design. Compared with traditional atomization mechanisms, it can significantly improve the atomization efficiency and make the droplets more uniform.

[0042] In a specific embodiment, the acoustic impedance matching component 20 includes n layers of acoustic impedance matching layers arranged in sequence from top to bottom, and the acoustic impedance matching layers are located between the ultrasonic atomization sheet 30 and the anti-corrosion isolation membrane 201; the acoustic impedance values ​​of the n layers of acoustic impedance matching layers decrease in sequence from bottom to top, and are located between the acoustic impedance values ​​of the ultrasonic atomization sheet 30 and the anti-corrosion isolation membrane 201.

[0043] Specifically, this multi-layer design can refine the acoustic impedance transition, reduce the energy loss in ultrasonic transmission, and further improve the atomization efficiency. After the ultrasonic wave is emitted from the ultrasonic atomizer 30, it passes through each layer of acoustic impedance matching layer in turn. Since the acoustic impedance value of each matching layer gradually decreases and forms a good match with the previous layer, the ultrasonic wave propagates smoothly between the layers, reducing reflection and energy loss, and finally reaches the liquid to be atomized to achieve efficient atomization. Compared with the single-layer design of the acoustic impedance matching component 20, the multi-layer design can further improve the atomization efficiency, thereby further improving the uniformity of the droplets to achieve a better atomization effect.

[0044] In a specific embodiment, the acoustic impedance value of the ultrasonic atomizer 30 is Z0, and the acoustic impedance value of the atomized liquid is Z n+1 The acoustic impedance value of the kth acoustic impedance matching layer is 0.9Z k to 1.1Z k , Z k=Z0^{1-k / (n+1)}*Z n+1 ^{k / (n+1)}, (k=1,2,...,n).

[0045] Specifically, the formula is derived based on acoustic theory. By accurately calculating the acoustic impedance value of each layer, the optimal matching between each layer and the ultrasonic atomizer 30 and the liquid to be atomized is achieved, thereby maximizing the ultrasonic transmission efficiency. Accurate acoustic impedance matching calculation can effectively improve the ultrasonic energy transmission efficiency, thereby further improving the atomization efficiency and ensuring the stability of the atomization effect under different working conditions. At the same time, the actual acoustic impedance value of the kth acoustic impedance matching layer is allowed to be within 0.9Z k to 1.1Z k The design not only retains the core matching logic of the acoustic impedance gradient decrease, but also adapts to the actual error of material preparation through the tolerance range of ±10%, significantly reducing the production difficulty and cost.

[0046] In a specific embodiment, the wavelength of the ultrasonic wave emitted by the ultrasonic atomizer 30 in the kth acoustic impedance matching layer is λ k The thickness of the kth acoustic impedance matching layer is 0.95d k to 1.05d k , d k =λ k / 4.

[0047] Specifically, the design is based on the quarter-wavelength matching principle. This thickness can form a good impedance match at the two interfaces between the layers, reduce ultrasonic wave reflection, and improve energy transmission efficiency. When the ultrasonic wave propagates to the kth acoustic impedance matching layer, because the layer thickness is about a quarter of the wavelength, the reflected wave and the incident wave interfere with each other, which greatly weakens the energy of the reflected wave. Most of the energy penetrates the layer smoothly and propagates upward, and finally acts on the liquid to be atomized to achieve atomization. This design further reduces energy loss, further improves the atomization efficiency, improves the droplet size distribution, and increases the proportion of small-size droplets, which is beneficial to medical atomization inhalation treatment and other scenarios that have strict requirements on droplet size. At the same time, the actual thickness is allowed to be 0.95d k to 1.05d k The design not only complies with the physical laws of acoustic wave interference enhancement, but is also compatible with the precision limitations of mechanical processing, thus avoiding a surge in processing costs caused by excessive pursuit of dimensional accuracy.

[0048] See also Figures 3 and 4 As shown, in a specific embodiment, the nth acoustic impedance matching layer from bottom to top is the anti-corrosion isolation film 201 , and the anti-corrosion isolation film 201 is located between the first through hole 101 and the ultrasonic atomization sheet 30 .

[0049] Specifically, this design mainly protects the lower acoustic impedance matching layer and the ultrasonic atomizing sheet 30 from being corroded by the liquid to be atomized, especially the corrosive liquid to be atomized, while preventing the leakage of the liquid to be atomized to ensure the normal operation of the mechanism. The liquid to be atomized flows down from the first through hole 101 and first contacts the anti-corrosion isolation membrane 201. The anti-corrosion isolation membrane 201 blocks its direct contact with the lower components to prevent corrosion. The ultrasonic wave is transmitted to the liquid to be atomized through the anti-corrosion isolation membrane 201 to realize atomization. This design effectively protects the internal key components, extends the service life of the atomizing mechanism, and its good sealing performance ensures the stability and reliability of the atomization process.

[0050] In a specific embodiment, the first acoustic impedance matching layer from bottom to top is a protective layer (not shown in the figure), and the protective layer is attached to the upper surface of the ultrasonic atomizing sheet 30 .

[0051] Specifically, the purpose of setting up the protective layer is to protect the ultrasonic atomizer sheet 30 from mechanical damage, chemical corrosion, etc., and at the same time participate in the matching process as part of the acoustic impedance matching layer to ensure the effective transmission of ultrasonic waves. During the atomization process, the protective layer withstands the upper pressure and impact force to prevent the ultrasonic atomizer sheet 30 from being damaged. At the same time, it fits tightly with the ultrasonic atomizer sheet 30, effectively transmitting the ultrasonic wave to the upper acoustic impedance matching layer, and then to the liquid to be atomized to achieve atomization. This design significantly improves the reliability and service life of the ultrasonic atomizer sheet 30, allowing it to work stably in harsh environments, and combined with the acoustic impedance matching function, it does not affect the atomization efficiency, ensuring the stability of the overall atomization performance.

[0052] In a specific embodiment, the number of the acoustic impedance matching layers is three, wherein the second acoustic impedance matching layer is a liquid medium disposed between the anti-corrosion isolation film 201 and the protective layer.

[0053] Specifically, the liquid medium can better fill the space, reduce the sudden change of acoustic impedance, adjust the acoustic impedance value, and improve the overall matching effect. After the ultrasonic wave is emitted from the ultrasonic atomizer 30, it first enters the liquid medium through the first protective layer. The liquid medium reduces reflection and energy loss by virtue of continuity and fluidity, and then passes to the anti-corrosion isolation membrane 201, and finally acts on the liquid to be atomized to achieve atomization. This embodiment further optimizes the acoustic impedance matching by using a liquid medium as an intermediate layer, which can further improve the atomization efficiency, improve the droplet quality, and make the droplets more delicate and uniform. It is understandable that the liquid medium can be selected from water, silicone oil, etc., which is determined according to the acoustic impedance value range and compatibility with the liquid to be atomized. When a liquid medium cannot be used, it can be replaced by a highly elastic solid material with similar acoustic impedance characteristics.

[0054] See also Figure 3 As shown, in a specific embodiment, a sealed cavity 40 is formed between the anti-corrosion isolation membrane 201 , the housing 10 and the protective layer, and the liquid medium is contained in the sealed cavity 40 .

[0055] Specifically, the sealed cavity 40 ensures the stability of the liquid medium, prevents leakage, provides a stable environment for acoustic impedance matching, and improves the consistency of the atomization effect. This design improves the safety and stability of the liquid medium and ensures that the atomization mechanism maintains a stable atomization effect during long-term operation.

[0056] See also Figures 3 and 4 As shown, in a specific embodiment, the edge 2011 of the anti-corrosion isolation membrane 201 is connected to the housing 10 , and the middle portion 2012 of the anti-corrosion isolation membrane 201 is parallel to the ultrasonic atomization sheet 30 .

[0057] Specifically, this embodiment clearly connects the edge 2011 of the anti-corrosion isolation membrane 201 to the housing 10, and the middle portion 2012 is parallel to the ultrasonic atomizer 30. This ensures a uniform distance between the middle portion 2012 of the anti-corrosion isolation membrane 201 and the ultrasonic atomizer 30, avoiding inconsistent sound wave propagation paths caused by tilt, which affects atomization uniformity. The connection between the edge 2011 and the housing 10 ensures structural stability. This design optimizes the distribution of the sound wave field and reduces atomization blind spots. At the same time, the connection of the edge 2011 enhances the installation strength of the anti-corrosion isolation membrane 201 and prevents vibration deformation.

[0058] See also Figures 3 and 4 and Figure 6 As shown, in a specific embodiment, the shell 10 is provided with a second through hole 102 between the anti-corrosion isolation membrane 201 and the protective layer, and a transition zone 2013 transitioning from top to bottom is provided between the edge 2011 and the middle part 2012 of the anti-corrosion isolation membrane 201. The middle part 2012 of the anti-corrosion isolation membrane 201 and the transition zone 2013 are located in the second through hole 102, so that the cross-section of the sealing cavity 40 is concave.

[0059] Specifically, the middle portion 2012 and the transition zone 2013 of the anti-corrosion isolation membrane 201 form the top of the sealed cavity 40, the sidewalls of the second through hole 102 form the sidewalls of the sealed cavity 40, and the protective layer forms the bottom plate of the sealed cavity 40, thereby enclosing a sealed space with a concave cross-section. Under normal circumstances, the liquid medium in the sealed cavity 40 is in a full state, but under the influence of ultrasonic vibration, the gas in the liquid medium will be discharged. At this time, the core atomization area between the middle portion 2012 of the anti-corrosion isolation membrane 201 and the protective layer is always filled with liquid medium through the concave cross-section of the sealed cavity 40, and the vibrated gas will rise to the top of the sealed cavity 40, thereby minimizing the reflection waste of ultrasonic waves at the gas-liquid interface and improving energy utilization. At the same time, the transition design of the transition zone 2013 reduces the stress concentration at the edge 2011 of the anti-corrosion isolation membrane 201, enhances the stability of the structure under high-frequency vibration, and prolongs its service life. In addition, the concave cavity provides a smooth channel for gas discharge, preventing bubbles from being trapped in the liquid medium and affecting the uniformity of atomization.

[0060] See also Figures 3 and 4 As shown, in a specific embodiment, an elastic shell 50 is installed in the housing 10 , the ultrasonic atomizing sheet 30 is installed in the elastic shell 50 , and the elastic shell 50 defines an air cavity 501 below the ultrasonic atomizing sheet 30 .

[0061] Specifically, in this embodiment, an elastic shell 50 is installed in the shell 10, and the ultrasonic atomizer sheet 30 is installed in the elastic shell 50, and the elastic shell 50 is provided with an air cavity 501 below the ultrasonic atomizer sheet 30. The design principle is to use the buffering effect of the elastic shell 50 to reduce the transmission of the vibration of the ultrasonic atomizer sheet 30 to the shell 10. The air cavity 501 can absorb part of the vibration energy and adjust the acoustic impedance to improve the working stability of the ultrasonic atomizer sheet 30. During operation, the elastic shell 50 buffers the high-frequency vibration of the ultrasonic atomizer sheet 30 through its own deformation, and the air cavity 501 acts as an acoustic cavity to optimize the sound wave radiation characteristics. This design reduces the operating noise of the equipment, reduces the impact of vibration on other components, and at the same time improves the vibration efficiency of the ultrasonic atomizer sheet 30.

[0062] More specifically, the ultrasonic atomizer 30 includes a solid electric ceramic sheet (not shown in the figure), a first electrode layer (not shown in the figure), and a second electrode layer (not shown in the figure); the solid electric ceramic sheet is arranged horizontally and embedded in the elastic shell 50, which can stabilize vibration and reduce energy loss; the first and second electrode layers are respectively arranged in the middle position of the upper and lower surfaces of the solid electric ceramic sheet, which can form a symmetrical electric field, improve vibration uniformity, and reduce local overheating; the protective layer covers the first electrode layer to prevent the liquid medium from corroding the first electrode layer; the middle part 2012 of the anti-corrosion isolation membrane 201 is located directly above the first electrode layer to ensure efficient transmission of ultrasonic waves; the air cavity 501 is located directly below the second electrode layer, which can buffer vibration, adjust acoustic characteristics, and reduce noise. The overall design optimizes energy conversion efficiency, extends service life, and improves atomization stability.

[0063] In a specific embodiment, the acoustic impedance value of the solid electric ceramic sheet is 30MRayl, the protective layer is a glass glaze with an acoustic impedance value of 16MRayl and a thickness of 0.9mm, the liquid medium is a glycerin mixture with an acoustic impedance value of 6.2MRayl and a minimum thickness (i.e., the distance between the protective layer and the middle part 2012 of the anti-corrosion isolation film 201) of 0.28mm, the anti-corrosion isolation film 201 is a PI film with an acoustic impedance value of 3.12MRayl and a thickness of 0.32mm, and the acoustic impedance value of the liquid to be atomized is 1.48MRayl, so that the transmittance of the ultrasonic wave reaches 76.2%, which is much higher than the energy transmittance of a conventional atomizer of about 31.4%, greatly improving energy utilization, reducing losses, and significantly improving atomization efficiency and effect.

[0064] See also Figures 2 to 4As shown, in a specific embodiment, the shell 10 includes a cover body 103 and a base 104 connected to the bottom of the cover body 103, the edge 2011 of the anti-corrosion isolation membrane 201 is pressed between the cover body 103 and the base 104, the first through hole 101 is provided at the top of the cover body 103, the second through hole 102 is provided at the top of the base 104, and the ultrasonic atomization sheet 30 is installed in the base 104.

[0065] Specifically, by adopting a split housing 10, the assembly and maintenance of internal components are facilitated. The press-fit connection between the cover 103 and the base 104 ensures that the installation structure of the anti-corrosion isolation membrane 201 is stable, and provides installation positioning for the ultrasonic atomizer 30. During operation, the combined structure of the cover 103 and the base 104 forms a complete sealed space, and the first through hole 101 and the second through hole 102 respectively realize the input of the liquid to be atomized and the internal communication function. This design simplifies the assembly process while ensuring the flatness and stability of the installation of the ultrasonic atomizer 30.

[0066] See also Figures 3 and 4 and Figure 6 As shown, more specifically, the base 104 has an annular plate 1041 extending from the outer periphery of the elastic shell 50 , and a pressing plate 60 is connected below the annular plate 1041 . The outer periphery of the elastic shell 50 abuts against the annular plate 1041 , and the bottom abuts against the pressing plate 60 .

[0067] Specifically, the structure forms a stable fixed structure by limiting the outer periphery of the elastic shell 50 through the annular plate 1041 and supporting the bottom of the elastic shell 50 through the pressure plate 60 to ensure the precise installation of the elastic shell 50, thereby ensuring the horizontal posture of the ultrasonic atomizer 30 and maintaining the stability of the acoustic path during long-term operation.

[0068] Preferably, the pressing plate 60 is detachably connected to the base 104, which facilitates the installation, commissioning and maintenance of the ultrasonic atomizer 30. In the event of a fault, it can be quickly disassembled for inspection and repair. It is also convenient for replacing damaged parts and reducing maintenance costs. At the same time, it is convenient to clean the interior, avoid the accumulation of impurities that affect performance, and improve the overall reliability and service life of the atomization mechanism. It is understandable that the detachable connection between the pressing plate 60 and the base 104 can be achieved by means of snaps, threads, etc., or by providing slots and plugs between the base 104 and the pressing plate 60 to achieve quick disassembly and assembly, thereby improving the usability and maintainability of the product.

[0069] See also Figures 3 and 4 As shown, in a specific embodiment, a shielding cover 70 is connected below the pressing plate 60 , a control board 80 is installed in the shielding cover 70 , and the control board 80 is electrically connected to the ultrasonic atomizing sheet 30 .

[0070] Specifically, the wires leading from the control board 80 pass through the shielding cover 70, the pressure plate 60, and the elastic shell 50 and are connected to the ultrasonic atomizer 30. The shielding cover 70 provides electromagnetic shielding for the control board 80, preventing external electromagnetic interference from affecting the control board 80 and ensuring that the control board 80 can stably control the operation of the ultrasonic atomizer 30. This design improves the accuracy and stability of the atomization mechanism control and enhances the overall performance of the device.

[0071] See also Figures 3 and 4 As shown, in a specific embodiment, a sealing ring 90 is provided on the inner side of the cover 103 , and an edge 2011 of the anti-corrosion isolation membrane 201 is pressed between the sealing ring 90 and the base 104 .

[0072] In this embodiment, a sealing ring 90 is provided on the inner side of the cover 103, and the edge 2011 of the anti-corrosion isolation membrane 201 is pressed between the sealing ring 90 and the base 104. The design principle is to enhance the sealing performance of the edge 2011 of the anti-corrosion isolation membrane 201 by using the sealing ring 90, thereby preventing the atomized liquid from leaking from the gap between the cover 103 and the base 104. At the same time, the elasticity of the sealing ring 90 can compensate for assembly errors. During operation, the sealing ring 90 undergoes elastic deformation under the pressure, tightly fitting the edge 2011 of the anti-corrosion isolation membrane 201 to form a reliable seal. This design improves the sealing performance of the overall structure and prevents failures caused by leakage of the atomized liquid. At the same time, the elastic sealing ring 90 can buffer vibration and reduce noise.

[0073] See also Figures 3 and 4 and Figure 6 As shown, in a specific embodiment, an annular connecting groove 1042 is provided on the top of the base 104 , and a first connecting plate 1031 is provided on the outer periphery of the bottom of the cover 103 . The first connecting plate 1031 is arranged in an annular shape and is ultrasonically welded to the annular connecting groove 1042 .

[0074] Specifically, this embodiment uses ultrasonic welding to permanently connect cover 103 to base 104. The annular structure ensures weld sealing and uniform strength, while annular connection groove 1042 provides weld positioning and space for fusion. This design enhances the connection strength and sealing of housing 10, making it more suitable for high-precision sealing requirements compared to traditional connection methods. Furthermore, the welding process is highly automated, improving production efficiency.

[0075] In a specific embodiment, the base 104 has a second connecting plate 1043 extending upward. The second connecting plate 1043 is arranged in an annular shape and is embedded in the cover body 103. The sealing ring 90 is tightly abutted against the inner side of the second connecting plate 1043. An elastic reinforcement ring 100 is also sleeved on the outer periphery of the cover body 103.

[0076] Specifically, the design principle of this embodiment is to enhance the overall stability of the housing 10 through multiple positioning and sealing structures. The interlocking of the second connecting plate 1043 and the cover 103 ensures assembly concentricity, while the sealing ring 90 and the reinforcement ring enhance sealing and structural strength from the inside and outside, respectively. During operation, the interlocking structure prevents relative movement between the cover 103 and the base 104, the elastic reinforcement ring 100 offsets the gap caused by vibration, and the sealing ring 90 maintains the internal seal. This design improves the vibration and impact resistance of the housing 10, and the multiple sealing design further reduces the risk of leakage, making it suitable for high-vibration or high-pressure environments.

[0077] See also Figures 1 to 8 As shown, in addition, an embodiment of the present invention further provides an atomizer, including the atomization mechanism as described above, and also including an atomization cup 110 , the atomization mechanism is installed below the atomization cup 110 , and the inner cavity of the atomization cup 110 is connected to the first through hole 101 .

[0078] Specifically, the atomizer cup body 110 is provided with a liquid inlet (not shown in the figure) and a mist outlet (not shown in the figure) connected to the inner cavity, and a mounting hole 1101 connected to the inner cavity is also provided at the bottom. The atomizer mechanism is installed in the mounting hole 1101, and the inner cavity of the atomizer cup body 110 is connected to the first through hole 101.

[0079] The atomizer in this embodiment adopts the atomizing mechanism as described above, and cooperates with the structure of the liquid inlet, mist outlet and mounting hole 1101 of the atomizing cup body 110, so that the liquid to be atomized flows smoothly through the first through hole 101 to the top of the acoustic impedance matching component 20. The ultrasonic energy is transmitted from the ultrasonic atomizing piece 30 and efficiently transmitted to the liquid to be atomized through the acoustic impedance matching component 20, which significantly improves the atomization efficiency and makes the droplets more uniform. At the same time, the atomizing cup body 110 is firmly connected to the atomizing mechanism, ensuring a continuous and stable atomization process, which is suitable for various scenarios. In addition, when the amount of liquid to be atomized in the inner cavity is reduced, it can be replenished in time through the liquid inlet, thereby achieving continuous atomization operation.

[0080] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. An atomizing mechanism, characterized in that: include: A shell, an acoustic impedance matching component and an ultrasonic atomizing sheet, wherein the acoustic impedance matching component and the ultrasonic atomizing sheet are installed in the shell, and a first through hole is provided on the top of the shell. The first through hole, the acoustic impedance matching component and the ultrasonic atomizing sheet are arranged in sequence from top to bottom. The first through hole is used to provide a channel for the liquid to be atomized to connect to the top of the acoustic impedance matching component. The acoustic impedance values ​​of the ultrasonic atomizing sheet, the acoustic impedance matching component and the liquid to be atomized decrease in sequence.

2. The atomizing mechanism according to claim 1, characterized in that: The acoustic impedance matching component includes n acoustic impedance matching layers arranged in sequence from top to bottom, and the acoustic impedance matching layers are located between the ultrasonic atomization sheet and the liquid to be atomized; the acoustic impedance values ​​of the n acoustic impedance matching layers decrease in sequence from bottom to top, and are located between the acoustic impedance values ​​of the ultrasonic atomization sheet and the liquid to be atomized.

3. The atomizing mechanism according to claim 2, characterized in that: The acoustic impedance value of the ultrasonic atomizer is Z0, and the acoustic impedance value of the liquid to be atomized is Z n+1 The acoustic impedance value of the kth layer of the acoustic impedance matching layer is 0.9Z k to 1.1Z k , Z k =Z0^{1-k / (n+1)}*Z n+1 ^{k / (n+1)}, (k=1,2,...,n).

4. The atomizing mechanism according to claim 3, characterized in that: The wavelength of the ultrasonic wave emitted by the ultrasonic atomizer in the acoustic impedance matching layer of the kth layer is λ k The thickness of the acoustic impedance matching layer of the kth layer is 0.95d k to 1.05d k , d k =λ k / 4.

5. The atomizing mechanism according to claim 2, characterized in that: The nth acoustic impedance matching layer from bottom to top is an anti-corrosion isolation film, and the anti-corrosion isolation film is located between the first through hole and the ultrasonic atomization sheet.

6. The atomizing mechanism according to claim 5, characterized in that: The first acoustic impedance matching layer from bottom to top is a protective layer, and the protective layer is attached to the upper surface of the ultrasonic atomizing sheet.

7. The atomizing mechanism according to claim 6, characterized in that: The number of the acoustic impedance matching layers is three, wherein the second acoustic impedance matching layer is a liquid medium provided between the anti-corrosion isolation film and the protective layer.

8. The atomizing mechanism according to claim 7, characterized in that: A sealed cavity is formed between the anti-corrosion isolation membrane, the shell and the protective layer, and the liquid medium is contained in the sealed cavity.

9. The atomizing mechanism according to claim 8, characterized in that: The edge of the anti-corrosion isolation membrane is connected to the shell, and the middle part of the anti-corrosion isolation membrane is parallel to the ultrasonic atomization sheet.

10. The atomizing mechanism according to claim 9, characterized in that: The shell is provided with a second through hole between the anti-corrosion isolation membrane and the protective layer, and a transition zone transitioning from top to bottom is provided between the edge and the middle part of the anti-corrosion isolation membrane. The middle part and the transition zone of the anti-corrosion isolation membrane are located in the second through hole, so that the cross-section of the sealing cavity is concave.

11. The atomizing mechanism according to claim 9, characterized in that: An elastic shell is installed in the shell body, the ultrasonic atomizing sheet is installed in the elastic shell, and the elastic shell is provided with an air cavity below the ultrasonic atomizing sheet.

12. The atomizing mechanism according to claim 10, characterized in that: The shell includes a cover body and a base connected to the bottom of the cover body, the edge of the anti-corrosion isolation membrane is pressed between the cover body and the base, the first through hole is provided at the top of the cover body, the second through hole is provided at the top of the base, and the ultrasonic atomizer is installed in the base.

13. The atomizing mechanism according to claim 12, characterized in that: A sealing ring is provided on the inner side of the cover body, and the edge of the anti-corrosion isolation membrane is pressed between the sealing ring and the base.

14. The atomizing mechanism according to claim 12, characterized in that: An annular connecting groove is provided on the top of the base, and a first connecting plate is provided on the outer periphery of the bottom of the cover body. The first connecting plate is arranged in an annular shape and is ultrasonically welded to the annular connecting groove.

15. The atomizing mechanism according to claim 12, characterized in that: A second connecting plate extends upward from the base. The second connecting plate is arranged in an annular shape and is embedded in the cover body. The sealing ring is tightly abutted against the inner side of the second connecting plate. An elastic reinforcement ring is also sleeved on the outer periphery of the cover body.

16. An atomizer, characterized in that: The invention comprises the atomization mechanism according to any one of claims 1 to 15, and further comprises an atomization cup body, wherein the atomization mechanism is installed below the atomization cup body, and the inner cavity of the atomization cup body is connected to the first through hole.

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