Atomizing device with phonon lattice microstructure

Abstract

The application discloses an atomizing device with a phonon lattice microstructure, which comprises a piezoelectric substrate, an interdigital transducer arranged on the surface of the piezoelectric substrate and a phonon lattice microstructure. The phonon lattice microstructure is arranged in front of the propagation direction of the surface acoustic wave emitted by the interdigital transducer. The phonon lattice microstructure comprises a plurality of lattice micro-units arranged in a lattice mode and a lattice micro-channel connected with the lattice micro-units. The lattice micro-units are uniformly arranged in the longitudinal and transverse directions along the propagation direction of the surface acoustic wave. The lattice micro-units are arranged as pits recessed on the surface of the piezoelectric substrate or bosses protruding from the surface. The lattice micro-channel and the lattice micro-units are both made of porous materials for permeating, transporting and storing atomized liquid. When the surface acoustic wave propagates to the phonon lattice microstructure, resonance is generated in the lattice micro-units. The surface of the lattice micro-units forms a liquid film and is further atomized. The surface acoustic wave can form resonance on the lattice micro-units, so that the energy of the surface acoustic wave is more efficiently coupled into the atomized liquid.

Description

Technical Field

[0001] This invention relates to the field of atomizing devices for atomizing liquids, and more specifically, to an atomizing device having a phonon lattice microstructure. Background Technology

[0002] Atomizing devices atomize their internally stored atomizing liquid into an aerosol, mist, vapor, or smoke for users to inhale. Existing atomizing devices generally include an interconnected power supply unit and an atomizing device. The power supply unit contains a battery or power adapter to supply power to the atomizing device and control circuitry. Applications of atomizing devices include electronic cigarettes, liquid atomizers, humidifiers, etc. Atomizing liquids include e-cigarette liquids, medicinal liquids, herbal extracts, and other liquid solutions.

[0003] Currently, in terms of e-cigarette applications, the majority of mainstream e-cigarette atomizing devices on the market are based on electrothermal atomization, with a few using ultrasonic atomization. Electrothermal atomization is based on the principle of heat conduction. It triggers the operation of the e-cigarette through an airflow sensor, mechanical button, or touch button, and the circuit powers the heating wire or heating element (made of nickel-chromium alloy, stainless steel alloy, nickel-200 alloy, or titanium alloy) to heat the e-liquid and atomize it into an aerosol for the user to inhale. Although electrothermal atomization has a fast heat conduction rate and high atomization efficiency, there are still many shortcomings in terms of materials and structural design, mainly as follows: (1) It is easy to dry burn or carbonize and produce an odor, which seriously affects the smoking quality and sensory experience; (2) During continuous smoking, the heating component can continuously heat up to 500-600℃, posing a potential safety risk; (3) When the e-liquid is in long-term contact with the heating component, heavy metals leach out and transfer to the aerosol, and high-temperature pyrolysis releases harmful components such as aldehydes, which bring health hazards.

[0004] Furthermore, ultrasonic atomizing e-cigarettes utilize the high-frequency oscillation of the transducer to induce high-frequency resonance in the atomizing plate, thereby generating ultrasonic directional pressure. This causes the surface of the e-liquid to bulge, and cavitation occurs around the bulging liquid surface, atomizing the e-liquid to produce an aerosol. Compared to electrically heated atomizing e-cigarettes, ultrasonic atomization generates less heat, releases fewer harmful substances, and exhibits less noticeable dry burning or carbonization. However, ultrasound is a bulk sound wave, and its energy diffuses uncontrollably in all directions during propagation. This results in high power consumption, low atomization rate, and low efficiency for e-liquid atomization, making it difficult to stably produce aerosols with uniform particle size distribution, and also making it challenging to atomize high-viscosity e-liquids.

[0005] Given the numerous problems existing in current common atomization devices, exploring the application of new atomization devices in electronic cigarettes or e-liquid atomizers is of great significance.

[0006] Surface acoustic waves (SAWs) are mechanical waves that propagate along the surface of an elastic medium. Their energy is primarily concentrated at the surface and decays exponentially with depth. The development of semiconductor planar technology and laser technology in the 1960s led to the emergence of numerous artificial piezoelectric materials, providing the necessary material and technological foundation for the development of SAW technology. In 1965, White and Voltmer in the United States invented the interdigital transducer (IDT), which can excite SAWs on the surface of a piezoelectric substrate.

[0007] The application of surface acoustic waves (SAWs) in the field of atomization technology has broad prospects due to its characteristics of low driving power, high excitation frequency, concentrated energy, and low heat generation. However, the main shortcomings and areas for improvement in existing technologies are as follows:

[0008] Firstly, there are designs and improvements to interdigital transducers (IDTs). For example, Chinese patent application CN111165886A, entitled "A Variable Frequency Surface Acoustic Wave Electronic Cigarette," discloses a unidirectional SPUDT with a fan-shaped structure. This structure utilizes the periodic variation of the IDT along the aperture direction to generate different surface acoustic waves within the region, thereby controlling different atomized particle sizes and enabling the surface acoustic waves to be excited from one direction, reducing bidirectional losses. However, this approach only improves bidirectional losses by a maximum of 3dB, limiting its impact on atomization efficiency.

[0009] Secondly, improvements have been made to the e-liquid guiding device. For example, Chinese patent application CN111838769A, entitled "An Electronic Cigarette Atomizing Device and an Electronic Cigarette," discloses an arc-shaped IDT (Inductively Coupled Thermometer), which helps to concentrate the energy of surface acoustic waves to the atomization area. Furthermore, the heating resistance wire is wound around porous ceramic to increase the temperature of the atomized e-liquid, thus improving the atomization effect. However, this method, using a heating element or heating wire, requires the addition of a three-dimensional heating structure, which is incompatible with planar processes, increases power consumption, and hinders miniaturization and cost reduction.

[0010] Existing surface acoustic wave (SAW) technology only has one overall atomization area. When SAW waves act in this area, they only produce one atomized liquid film, resulting in low atomization efficiency.

[0011] In terms of liquid guiding materials, existing surface acoustic wave technology generally uses a pipette or a porous bulk material for liquid absorption, which results in a large liquid output that is difficult to control. At the same time, the liquid film thickness is too large relative to the wavelength, leading to poor atomization and reduced atomization efficiency.

[0012] In addition, surface acoustic wave atomization requires a large power to be applied to the interdigital transducer (IDT). Due to the resistance effect of the electrodes, the temperature of the piezoelectric crystal rises suddenly. Due to the anisotropic nature of the piezoelectric crystal, it is easy to cause the crystal to crack. Summary of the Invention

[0013] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide an atomization device with a phonon lattice microstructure.

[0014] The technical solution of the present invention is implemented as follows: an atomizing device with a phonon lattice microstructure includes a piezoelectric substrate, an interdigital transducer disposed on the surface of the piezoelectric substrate, and a phonon lattice microstructure. The phonon lattice microstructure is located directly in front of the propagation direction of the surface acoustic wave emitted by the interdigital transducer. The phonon lattice microstructure includes a plurality of lattice-arranged micro-units and lattice microchannels connecting each of the lattice micro-units. The lattice micro-units are uniformly arranged longitudinally and laterally along the propagation direction of the surface acoustic wave. The lattice micro-units are configured as pits recessed into the surface of the piezoelectric substrate or protrusions protruding from the surface. The lattice microchannels and lattice micro-units are both made of porous materials for permeation, transport, and storage of atomizing liquid. When the surface acoustic wave propagates to the phonon lattice microstructure, resonance occurs in the lattice micro-units, and a liquid film is formed on the surface of the lattice micro-units for further atomization.

[0015] Preferably, the lattice micro-units are uniformly and staggered on adjacent horizontal columns, and the distance between adjacent horizontal columns is set to an integer multiple of the half wavelength of the surface acoustic wave.

[0016] Preferably, the lattice microchannel is located on the diagonal line connecting adjacent lattice microcells.

[0017] Preferably, the depth of the pits or the height of the protrusions in the lattice micro-units are set to 2 micrometers to 200 micrometers.

[0018] Preferably, the lattice micro-unit is configured as a cube, and the side length of the cube is set to 0.1 to 0.4 times the wavelength of the surface acoustic wave.

[0019] Preferably, the porosity of the porous material is set to 50% to 70%.

[0020] Preferably, it further includes a liquid storage tank for storing atomizing liquid and a liquid guiding component, wherein the liquid guiding component connects the liquid storage tank and the phonon lattice microstructure and guides the atomizing liquid stored in the liquid storage tank to the phonon lattice microstructure.

[0021] Preferably, the liquid guiding component includes a liquid inlet, a plurality of flow guiding microchannels and a plurality of liquid supply ports connected in a manner, each flow guiding microchannel being connected to a liquid supply port, and the liquid supply ports being matched and connected to the lattice micro-units on the edge of the phonon lattice microstructure.

[0022] Preferably, the width of the liquid supply port is comparable to the width of the lattice micro-unit, and the height is set to 60 micrometers to 200 micrometers.

[0023] Preferably, the piezoelectric substrate is composed of a piezoelectric single crystal structure or a composite structure composed of a piezoelectric thin film and a substrate.

[0024] Preferably, the thickness of the piezoelectric substrate is set to 0.35 mm to 1 mm.

[0025] Preferably, the interdigital transducer is configured as a bidirectional interdigital transducer, or as a unidirectional single-phase transducer, or as a transducer consisting of a reflective grating added to one side of a bidirectional interdigital transducer.

[0026] Preferably, the frequency of the AC voltage applied to the interdigital transducer is set to 3MHz. Z ~100MH Z .

[0027] Preferably, the electrode fingers of the interdigital transducer have a width of 15 micrometers to 80 micrometers, a length of 1 millimeter to 50 millimeters, and a thickness of 80 nanometers to 2 micrometers.

[0028] The beneficial effects of the atomization device with phonon lattice microstructure of the present invention are:

[0029] The atomizing device is equipped with a phonon lattice microstructure. When the surface acoustic wave reaches the phonon lattice microstructure, it forms a resonance due to multiple in-phase reflections and interferences within the structure. The energy of the resonance is concentrated on the lattice micro-units, so that the surface acoustic wave energy is coupled into the liquid to be atomized more efficiently.

[0030] Phonon lattice microstructures are set with numerous lattice micro-units, each of which can generate a liquid film atomization zone. Compared with the traditional method of atomizing with only one atomizing liquid film, this significantly increases the effective atomization area and is very beneficial for improving atomization efficiency.

[0031] This atomizing device uses a microstructure of porous materials. Compared with traditional methods that directly use pipettes or absorb oil from porous bulk materials, its lattice micro-units are small in size, with each unit being on the same order of magnitude as the wavelength, resulting in a thinner liquid film, which is beneficial for improving the atomization rate.

[0032] The atomizing device employs a flow-guiding microchannel, the outlet of which is matched and connected to the lattice micro-units of the phonon lattice microstructure. This effectively ensures that the liquid to be atomized is uniformly supplied to all positions of the phonon lattice microstructure, thereby improving atomization efficiency.

[0033] The atomizing device of this invention belongs to the application of surface acoustic waves in the field of atomization technology. It has the advantages of low driving power, high excitation frequency, concentrated energy, low heat generation, and the effective substances in the atomized liquid are not easily destroyed. The release of harmful substances is bound to be much lower than that of electrothermal atomization. Furthermore, due to its concentrated energy and high conversion efficiency, it can produce aerosols with good particle size uniformity, atomize high-viscosity atomized liquids, and due to its high-frequency characteristics, the generated aerosol particles are smaller, have a more delicate taste, and are easier for the human body to absorb. It can also make the atomizing device smaller in size, more compact in structure, and more portable. Attached Figure Description

[0034] Figure 1 This is a top view of the atomizing device with a phonon lattice microstructure according to the present invention;

[0035] Figure 2 This is a perspective view of the atomizing device with a phonon lattice microstructure according to the present invention;

[0036] Figure 3 This is a three-dimensional exploded structural diagram of the atomization device with a phonon lattice microstructure according to the present invention;

[0037] Figure 4 This is a perspective view of the liquid guiding component of the atomizing device with a phonon lattice microstructure according to the present invention;

[0038] Figure 5 This is a schematic diagram of a conventional bidirectional interdigital transducer;

[0039] Figure 6 This is a schematic diagram of a unidirectional single-phase transducer;

[0040] Figure 7 A transducer that adds a reflective grating to one side of a conventional bidirectional interdigital transducer. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0042] This invention relates to an atomizing device with a phonon lattice microstructure. It adopts the principle of surface acoustic wave atomization and the phonon lattice microstructure. During atomization, it has the advantages of low heat generation, less damage to the effective substances in the atomizing liquid, low release of harmful substances, smaller particle size of the generated aerosol, and a more delicate taste. It can be better applied to electronic cigarettes and liquid atomizers. Example

[0043] like Figures 1-4 As shown, the atomizing device of the present invention, which has a phonon lattice microstructure, comprises a piezoelectric substrate 1, an interdigital transducer 2 and a phonon lattice microstructure 3 disposed adjacent to the surface of the piezoelectric substrate 1, a liquid guiding component 4, and a liquid storage tank (not shown in the figure). Figure 2 The direction A of the dashed arrow in the diagram represents the propagation direction of the surface acoustic wave. Figure 4 A perspective view of the bottom surface of the liquid guiding component 4.

[0044] The phonon lattice microstructure 3 is positioned directly in front of the surface acoustic wave propagation direction A emitted by the interdigital transducer 2. The phonon lattice microstructure 3 includes several lattice-arranged micro-units 31 and lattice microchannels 32 connecting the micro-units. The micro-units 31 are uniformly arranged longitudinally and laterally along the surface acoustic wave propagation direction A. Each micro-unit 31 is a microstructure, consisting of a pit recessed into the piezoelectric substrate surface or a protrusion protruding from it. The micro-units 31 are connected by lattice microchannels 32 for permeating or transporting atomized liquid. Both the microchannels 32 and the micro-units 31 are made of porous material to facilitate the permeation, transport, and storage of the atomized liquid. The microchannels 32 are fine channels within which the atomized liquid permeates and is transported using capillary force. The lattice microchannels 32 can be located on the diagonal lines connecting adjacent lattice microcells 31. This structure allows for faster and more uniform permeation and delivery of the atomized liquid to the lattice microcells. When surface acoustic waves propagate to the phonon lattice microstructure 3, they resonate on each lattice microcell 31, forming a liquid film on the surface of each lattice microcell 31 and further atomizing it.

[0045] Specifically, the lattice micro-units 31 can be arranged in a phononic crystal structure, with the lattice micro-units 31 uniformly staggered on adjacent horizontal columns. For example, the lattice micro-units 31 in a later horizontal column are positioned between the two lattice micro-units 31 in the previous horizontal column. The distance X between the center points of adjacent horizontal columns is set to an integer multiple of half the wavelength of the surface acoustic wave. This structure allows the surface acoustic wave to resonate at each lattice micro-unit 31 due to enhanced interference from multiple in-phase reflections.

[0046] The phonon lattice microstructure 3 of this invention is provided with numerous lattice micro-units 31, each of which can generate a liquid film atomization zone. Compared with the traditional method of atomization using only a single integral atomizing liquid film, this significantly increases the effective atomization area and is highly beneficial for improving atomization efficiency. Simultaneously, the atomization device of this invention employs a porous material microstructure. Compared with the traditional method of directly using a pipette or oil-absorbing porous bulk material, its lattice micro-units are small, with each unit on the same order of magnitude as the wavelength, resulting in a thinner liquid film, which is conducive to improving the atomization rate.

[0047] An interdigital transducer (IDT) 2 is disposed on the surface of the piezoelectric substrate 1, located on one side of the phonon lattice microstructure 3. The surface acoustic wave (SAW) it generates can act on the region of the phonon lattice microstructure 3. When the interdigital transducer (IDT) 2 is energized, it generates a surface acoustic wave (SAW) that propagates to the phonon lattice microstructure 3. Under the action of the surface acoustic wave (SAW), the atomized liquid accumulates on the surface of the lattice microunits 31 to form a liquid film. The liquid film is further atomized under the high-frequency vibration of the surface acoustic wave.

[0048] Specifically, when the atomizing device is working, an AC signal is input into the interdigital transducer (IDT) 2. Utilizing the inverse piezoelectric effect of the piezoelectric substrate 1, surface acoustic waves (SAWs) are excited in the piezoelectric substrate portion of the IDT and propagate outwards. When passing through the phonon lattice microstructure, the atomizing liquid in the porous material of each lattice microunit 31 is drawn out, forming a meniscus-shaped liquid film. The energy carried by the SAW is diffracted into the liquid film at a specific angle in the mode of leaking SAWs, causing deformation and thus strongly disturbing the free surface of the liquid film. When the surface tension of the liquid film surface is insufficient to maintain its geometric stability, atomization begins. The advantage of the phonon lattice microstructure 3 is that when the SAW reaches the phonon lattice microstructure 3, resonance is formed within the structure due to multiple in-phase reflections and interference, concentrating the energy of the resonance onto the lattice microunit 31. This allows the SAW energy to be coupled into the liquid to be atomized more efficiently, resulting in faster atomization speed and improved atomization efficiency.

[0049] A liquid guiding component 4 is placed on one side of the piezoelectric substrate 1. The liquid guiding component 4 connects the liquid storage chamber and the phonon lattice microstructure 3. The liquid guiding component 4 has an inlet 41 and a supply port 42, whereby the inlet 41 connects to the liquid storage chamber, and the supply port 42 connects to and supplies liquid to the phonon lattice microstructure 3. The liquid guiding component 4 contains several flow guiding microchannels 40. The inlet end of each flow guiding microchannel is connected to the inlet 41, and the outlet end is provided with a supply port 42. The supply ports 42 are respectively matched and connected to the lattice microunits 31 on the edge of the phonon lattice microstructure 3. The atomizing device of this invention adopts the structure of flow guiding microchannels 40. The outlet end of the flow guiding microchannel is matched and connected to the lattice microunits of the phonon lattice microstructure, which allows for precise oil supply control and effectively achieves uniform supply of the liquid to be atomized to various positions of the phonon lattice microstructure, improving atomization efficiency.

[0050] The period of the phonon lattice microstructure 3 is an integer multiple of the half-period of the IDT. In the phonon lattice microstructure 3, the lateral spacing X between adjacent lattice micro-units 31 is set to an integer multiple of the half-wavelength of the surface acoustic wave. The lattice micro-units are cubes, with side lengths set to 0.1 to 0.4 times the wavelength of the surface acoustic wave. The depth or height of the lattice micro-units is set to 2 micrometers to 200 micrometers. The porosity of the porous material of the lattice micro-units is set to 50% to 70%. The width of the liquid inlet 42 is approximately equal to the width of the lattice micro-units 31, and its height is set to 60 to 200 micrometers. This configuration of the phonon lattice microstructure 3 allows the surface acoustic wave to propagate into the region and, utilizing the characteristics of the phonon crystal, generate resonance of the surface acoustic wave on the lattice micro-units 31.

[0051] In this embodiment, the thickness of the piezoelectric substrate 1 is 0.35–1 mm. The piezoelectric substrate 1 is composed of a piezoelectric single crystal structure, specifically using blackened oxidized lithium niobate as the piezoelectric single crystal material. Compared to traditional untreated (transparent) lithium niobate substrates, blackened oxidized lithium niobate substrates have a slightly lower electromechanical coupling coefficient. However, they effectively solve the problem of cracking caused by pyroelectric effect in traditional lithium niobate substrates during atomization applications due to excessive power loading.

[0052] In other embodiments, the piezoelectric substrate 1 may also be composed of a composite structure consisting of a piezoelectric thin film and a substrate. The piezoelectric thin film material may be zinc oxide (ZnO) or aluminum nitride (AlN), and the substrate material may be silicon or sapphire.

[0053] In this embodiment, the porous material of the lattice microstructure on the piezoelectric substrate 1 can be prepared on the piezoelectric substrate 1 by magnetron sputtering or spin coating.

[0054] In the atomizing device of the present invention, the frequency of the AC voltage applied to the interdigital transducer is set to 3MHz. Z ~100MH Z Interdigital transducers (IDTs) have electrode layers made of materials including Al, Pt, Ti, Au, Mo, or W. The electrode finger width of an IDT can be set from 15 micrometers to 80 micrometers, the length from 1 millimeter to 50 millimeters, and the thickness from 80 nanometers to 2 micrometers. This structural dimension design helps improve the operating efficiency of the IDT.

[0055] like Figure 5 As shown, in this embodiment, the interdigital transducer 2 is a conventional bidirectional interdigital transducer. The surface acoustic waves generated by this interdigital transducer 2 are emitted to the left and right sides, as... Figure 5 The direction indicated by the middle arrow.

[0056] like Figure 6 As shown, in other embodiments, the interdigital transducer 2 can be a unidirectional, single-phase transducer, and the surface acoustic waves generated by the interdigital transducer 2 are emitted to one side, such as... Figure 6 As indicated by the arrow in the middle. This interdigital transducer 2 utilizes the asymmetry between the excitation center and the reflection center to suppress surface acoustic waves in the opposite direction and enhance surface acoustic waves propagating in the forward direction.

[0057] like Figure 7 As shown, in other embodiments, a transducer with a reflective grating 20 added to one side of a conventional bidirectional interdigital transducer 2 can be used. This interdigital transducer can reflect the counter-propagating surface acoustic waves back to the other side, merging them with the forward-propagating surface acoustic waves in the same direction, such as... Figure 7 The direction indicated by the middle arrow.

[0058] The working principle of the atomizing device of this invention is as follows: the phonon lattice microstructure is composed of a porous material. This structure is connected to a liquid storage chamber. The e-liquid or liquid to be atomized enters the lattice microstructure from the storage chamber through a liquid guide, and then permeates and is conducted to each lattice micro-unit through the capillary force of the lattice microchannels. The liquid conduction rate is mainly determined by the porosity of the porous material. The dimensions of the phonon lattice microstructure and the lattice micro-units can be determined according to the transducer's period and excitation frequency. The height of the lattice can be adjusted according to the atomization rate requirements. When an AC voltage is applied to the transducer, due to the inverse piezoelectric effect of the piezoelectric substrate, surface acoustic waves are excited and propagate towards the phonon lattice microstructure. When the surface acoustic waves reach the phonon lattice microstructure, due to the acoustic microfluidic effect, the liquid to be atomized in the lattice micro-units is dragged out, forming a liquid film on its surface. Meanwhile, when the surface acoustic wave excited by the interdigital transducer comes into contact with the liquid film placed on the lattice micro-unit, the energy carried by the surface acoustic wave will diffract into the liquid at a specific angle in the mode of leaking surface acoustic wave and produce deformation, thereby generating strong disturbance to the free surface of the liquid. When the surface tension of the liquid surface itself is insufficient to maintain the stability of its geometric shape, atomization begins to occur.

[0059] The atomizing device of this invention belongs to the application of surface acoustic waves in the field of atomization technology. It has the advantages of low driving power, high excitation frequency, concentrated energy, low heat generation, and the effective substances in the atomized liquid are not easily destroyed. The release of harmful substances is bound to be much lower than that of electrothermal atomization. Furthermore, due to its concentrated energy and high conversion efficiency, it can produce aerosols with good particle size uniformity, atomize high-viscosity atomized liquids, and due to its high-frequency characteristics, the generated aerosol particles are smaller, have a more delicate taste, and are easier for the human body to absorb. It can also make the atomizing device smaller in size, more compact in structure, and more portable.

[0060] The above description is merely a preferred embodiment of the present invention, and the specific embodiments described above are not intended to limit the present invention. Various modifications and variations can be made within the scope of the technical concept of the present invention. All refinements, modifications, or equivalent substitutions made by those skilled in the art based on the above description are within the scope of protection of the present invention.

Claims

1. An atomizing device with a phonon lattice microstructure, characterized in that: The device includes a piezoelectric substrate, an interdigital transducer disposed on the surface of the piezoelectric substrate, and a phonon lattice microstructure. The phonon lattice microstructure is located directly in front of the propagation direction of the surface acoustic wave emitted by the interdigital transducer. The phonon lattice microstructure includes a plurality of lattice-arranged micro-units and lattice microchannels connecting each of the micro-units. The micro-units are uniformly arranged longitudinally and laterally along the propagation direction of the surface acoustic wave. The micro-units are either recesses in the surface of the piezoelectric substrate or protrusions on the surface. Both the lattice microchannels and the micro-units are made of porous materials for permeation, transport, and storage of atomized liquid. When the surface acoustic wave propagates to the phonon lattice microstructure, resonance occurs in the micro-units, and a liquid film is formed on the surface of the micro-units for further atomization. The lattice micro-units are uniformly and staggered on adjacent horizontal columns, and the distance between adjacent horizontal columns is set to an integer multiple of the half wavelength of the surface acoustic wave. The lattice microchannels are located on the diagonal lines connecting adjacent lattice microcells.

2. The atomizing device with a phonon lattice microstructure according to claim 1, characterized in that: The depth of the pits or the height of the protrusions in the lattice micro-units are set to 2 micrometers to 200 micrometers.

3. The atomizing device with a phonon lattice microstructure according to claim 1, characterized in that: The lattice micro-unit is configured as a cube, and the side length of the cube is set to 0.1 to 0.4 times the wavelength of the surface acoustic wave.

4. The atomizing device with a phonon lattice microstructure according to claim 1, characterized in that: The porosity of the porous material is set to 50% to 70%.

5. The atomizing device with a phonon lattice microstructure according to claim 1, characterized in that: It also includes a liquid storage tank for storing atomizing liquid and a liquid guiding component, wherein the liquid guiding component connects the liquid storage tank and the phonon lattice microstructure and guides the atomizing liquid stored in the liquid storage tank to the phonon lattice microstructure.

6. The atomizing device with a phonon lattice microstructure according to claim 5, characterized in that: The liquid guiding component includes a liquid inlet, several flow guiding microchannels, and several liquid supply ports connected in a manner. Each flow guiding microchannel is connected to a liquid supply port, and the liquid supply ports are respectively matched and connected to the lattice micro-units on the edge of the phonon lattice microstructure.

7. The atomizing device with a phonon lattice microstructure according to claim 6, characterized in that: The width of the liquid supply port is equivalent to the width of the lattice micro-unit, and the height is set to 60 micrometers to 200 micrometers.

8. The atomizing device with a phonon lattice microstructure according to claim 1, characterized in that: The piezoelectric substrate is composed of a piezoelectric single crystal structure or a composite structure consisting of a piezoelectric thin film and a substrate.

9. The atomizing device with a phonon lattice microstructure according to claim 1, characterized in that: The thickness of the piezoelectric substrate is set to 0.35 mm to 1 mm.

10. The atomizing device with a phonon lattice microstructure according to claim 1, characterized in that: The interdigitated transducer can be configured as a bidirectional interdigitated transducer, or as a unidirectional single-phase transducer, or as a transducer consisting of a reflective grating added to one side of a bidirectional interdigitated transducer.

11. The atomizing device with a phonon lattice microstructure according to claim 1, characterized in that: The frequency of the AC voltage applied to the interdigital transducer is set to 3MHz. Z ~100MH Z .

12. The atomizing device with a phonon lattice microstructure according to claim 1, characterized in that: The electrode fingers of the interdigital transducer have a width of 15 micrometers to 80 micrometers, a length of 1 millimeter to 50 millimeters, and a thickness of 80 nanometers to 2 micrometers.

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