Atomizer and electronic atomization device

Abstract

To provide an atomizer and an electronic atomization device for improving the consistency of inhalation feeling.SOLUTION: The atomizer 10 includes an atomization assembly 20, a conveying passage 21 and a microwave resonant cavity 23 are formed in the atomization assembly 20, the conveying passage accommodates an aerosol-generating substrate, and at least a part of the conveying passage is in communication with the microwave resonant cavity to form an atomization area, and a transmission assembly 40, at least a part of the transmission assembly 40 extends into the conveying passage and is controlled to drive the aerosol-generating substrate to move in the conveying passage. The transfer channel has an atomization region, the atomization region is in communication with the microwave resonant cavity and located on a moving path of the aerosol generating substrate, and the aerosol generating substrate can be pushed by the transmission assembly to move along an axial direction of the aerosol generating substrate, so that a portion of the aerosol generating substrate that is not atomized can always be transferred to the atomization region.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to a Chinese patent application filed on February 11, 2022, bearing application number 202220281366.0 and entitled "Atomizer and Electronic Atomization Device," the entire contents of which are incorporated herein by reference.

[0002] This application relates to the technical field of atomization, and in particular to atomizers and electronic atomization devices. [Background technology]

[0003] Aerosols are colloidal dispersions formed by dispersing and suspending fine particles of solid or liquid in a gas medium, and because aerosols are inhaled into the human body through the respiratory system, they provide users with a new alternative inhalation method. For example, atomizers that generate aerosols by baking and heating aerosol-generating substrates such as herbs or pastes are applicable to various fields and can supply inhalable aerosols to users, replacing conventional product forms and inhalation methods.

[0004] Electronic atomizers typically use a resistance method to heat the aerosol-generating substrate, but this heating method requires a long preheating wait time, and causes uneven heating and high local temperatures, resulting in problems such as burning out and caking of the heating pins and heating sheets, as well as problems such as carbon and tar accumulation on the pins and sheets, making cleaning difficult, etc. In recent years, microwave heating has become a research direction for non-combustion heating atomization to solve the pain points of resistance heating, but due to the limitations of the microwave heating principle, the energy coupling efficiency of the entire aerosol-generating substrate during the heating process is low, and the taste consistency is poor. Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, there is a need to provide an atomizer and electronic atomization device to address the problem of poor consistency in the inhalation sensation of microwave heating atomization. [Means for solving the problem]

[0006] The atomizer is an atomization assembly having a transfer passage and a microwave resonant cavity formed therein, the transfer passage configured to accommodate an aerosol-generating substrate, and at least a portion of the transfer passage in communication with the microwave resonant cavity to form an atomization region; a transmission assembly at least partially extending within the transport passage and controlled to drive the aerosol-generating substrate to move within the transport passage.

[0007] When the atomizer is in use, the aerosol-generating substrate is placed in the conveying passage, and the aerosol-generating substrate is pushed by the transmission assembly along the axial direction of the transmission assembly. Different portions of the aerosol-generating substrate pass through the atomization region in turn, thereby heating and atomizing the current portion of the aerosol-generating substrate using microwaves transmitted to the atomization region. During use, after the current portion of the aerosol-generating substrate is atomized and its internal material changes, the transmission assembly pushes the next portion of the aerosol-generating substrate from the current atomized portion to the atomization region for microwave heating and atomization. In this way, during the entire atomization process, the non-atomized portion of the aerosol-generating substrate is constantly transported to the atomization region, and the material and dielectric properties of the aerosol-generating substrate in the atomization region are nearly consistent at different times, stabilizing the performance of the aerosol-generating substrate in the atomization region and consistently providing a consistent atomization sensation, thereby improving atomization performance.

[0008] In one embodiment, the conveying passage includes a first end and a second end arranged axially opposite to each other, the microwave resonant cavity is spaced from the first end and communicates with the conveying passage to form the atomization region, and the transmission assembly is controlled to drive the aerosol-generating substrate to move within the conveying passage along a direction from the first end to the second end.

[0009] In one embodiment, the conveying passage includes a first conveying passage and a second conveying passage arranged coaxially, the first conveying passage adjacent to the first end, the second conveying passage adjacent to the second end, and the microwave resonant cavity communicating between the first conveying passage and the second conveying passage to form the atomization region.

[0010] In one embodiment, the atomizing assembly comprises an inner housing and a nozzle. an outer housing, the conveying passage being formed inside the inner housing; The outer housing and at least a portion of the inner housing are spaced apart from each other. The microwave resonant cavity is defined between the inner housing and the microwave resonant cavity is defined between the inner housing and the microwave resonant cavity. The housing has an opening that communicates the microwave resonant cavity with the transfer passage. In the conveying passage, a region that communicates with the opening along its radial direction is It is an area of ​​commerce.

[0011] In one embodiment, the inner housing includes an inner conductor and the outer housing includes an outer conductor, the inner conductor and the outer conductor being spaced apart to form the microwave resonant cavity, the inner conductor defining an edge adjacent to the first end of the opening, and the outer conductor defining an edge adjacent to the second end of the opening.

[0012] In one embodiment, the inner housing further includes an upper housing adjacent to the second end, the upper housing being connected to the outer conductor and defining an edge adjacent to the second end of the opening together with the outer conductor, the first transport passage being formed within the inner conductor itself, and the second transport passage being formed within the upper housing itself.

[0013] In one embodiment, the transmission assembly includes a transmission member, one end of which extends into the conveying passage and has a mounting surface that supports the aerosol-generating substrate, and the transmission member is controlled to move up and down along the axial direction of the conveying passage.

[0014] In one embodiment, the atomizer further includes an air pipe embedded in the inner wall of the conveying passage, the air pipe shielding the opening and allowing microwaves to pass through, the air pipe containing the aerosol-generating substrate, and at least a portion of the transmission assembly extending into the air pipe.

[0015] In one embodiment, the atomizing assembly is a metal member, and the microwave resonant cavity and the cavity wall of the transport passage are both made of metal.

[0016] In one embodiment, the atomizer further includes a coupling antenna, one end of which is connected to a microwave generator and the other end of which is inserted into the microwave resonant cavity to emit microwaves.

[0017] The electronic atomization device includes a microwave generator and the atomizer, wherein the microwave generator is configured to emit microwaves into the microwave resonant cavity.

[0018] In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly describe the drawings that need to be used in the description of the embodiments or the prior art. It is obvious that the drawings in the following description are only the embodiments of the present application, and those skilled in the art can obtain other drawings based on the disclosed drawings without creative work. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a structural schematic diagram of an electronic atomization device according to an embodiment of the present application; [Figure 2] FIG. 2 shows the changes in an aerosol-generating substrate heated by the electronic atomizer shown in FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0020] In order to make the above-mentioned objects, features, and advantages of the present application clearer and easier to understand, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, many specific details are set forth to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present application, so the present application is not limited by the specific examples disclosed below.

[0021] In the description of this application, orientations or positional relationships indicated by terms such as "center," "longitudinal direction," "lateral direction," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial direction," "radial direction," "circumferential direction," etc. are orientations or positional relationships shown in the drawings, and are used only to facilitate or simplify the description of this application, and it should be understood that these do not represent or imply that the devices or parts shown necessarily have a specific orientation or a specific oriented structure and operation, and therefore should not be construed as limiting this application.

[0022] Additionally, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply a relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature qualified as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of this application, unless explicitly and specifically limited, "plurality" means at least two, e.g., two, three, etc.

[0023] In this application, unless otherwise clearly specified or limited, the terms "attached," "coupled," "connected," etc. should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, an internal communication between two members, or an interactive relationship between two members. Those skilled in the art can understand the specific meanings of the above terms in this application according to specific circumstances.

[0024] In this application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include direct contact between the first and second features, or indirect contact between the first and second features via an intermediate medium. Furthermore, a first feature being "above," "above," and "on the upper surface" of a second feature may include the first feature being directly above or diagonally above the second feature, or may simply mean that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," and "on the lower surface" of a second feature may include the first feature being directly below or diagonally below the second feature, or may simply mean that the horizontal height of the first feature is lower than that of the second feature.

[0025] It should be noted that when an element is referred to as being "fixed" or "mounted" on another element, it may be directly on the other element, or there may be intervening elements present. When an element is considered to be "connected" to another element, it may be directly connected to the other element, or there may also be intervening elements present. The terms "vertical," "horizontal," "top," "bottom," "left," "right," and similar terms used herein are for illustrative purposes only and do not represent the only embodiment.

[0026] As mentioned in the background art, resistive heating uses an external power source to heat a resistive element, which then transfers heat to the aerosol-generating substrate via thermal conduction. Therefore, conventional resistive heating has the following disadvantages: 1. The temperature at the local contact point between the aerosol-generating substrate and the heat-generating element is high, preventing other locations from quickly receiving the heat, resulting in a temperature gradient and uneven heating, which affects the inhalation experience. 2. The heat-generating element continues to heat up during the inhalation process, posing a potential safety risk and easily generating harmful substances through thermal decomposition. 3. Because contact heating is used, the aerosol-generating substrate and the heat-generating element are in prolonged contact, which is prone to carbon deposition, a burning odor, and cleaning is very inconvenient. 4. Because conduction heating is used, a large temperature difference is required between the heat-generating element and the heated aerosol-generating substrate to shorten the preheating time, resulting in high temperatures in the electronic atomizer, high insulation costs, and long cooling times. 5. Most heating elements are pin- or sheet-shaped, making it difficult to remove the aerosol-generating substrate.

[0027] Microwave heating is a type of radiative heating that does not require heat transfer from a heating element, and can solve the shortcomings of resistive heating. However, all related microwave heating atomization methods require an aerosol-generating substrate to be placed in a microwave environment for overall heating, and the aerosol-generating substrate must maintain approximately 12 puffs. During the entire heating process, the composition of the smoke emitted by the cartridge varies greatly at each time step, affecting the consistency of the puff sensation.

[0028] Specifically, due to the principles of microwave heating, the microwave absorption capacity (dielectric constant) of a material is affected by temperature and composition. During the inhalation process, the temperature of the aerosol-generating substrate rises from room temperature to over 300°C. After the volatile components are atomized, the mass of the aerosol-generating substrate decreases by approximately 40%, and the plant fibers are carbonized. Throughout the process, the dielectric properties of the aerosol-generating substrate change dramatically. This prevents microwave energy from always acting on an aerosol-generating substrate with the same material and dielectric properties. This prevents the microwave energy load from achieving consistent impedance matching, and the resonant frequency of the heated resonant cavity cannot be maintained at the same frequency as the microwave radiation source. This means that the microwave coupling efficiency cannot be maintained at a constant high level, resulting in different atomization rates at different times and inconsistent inhalation sensations. The microwave radiation source assembly has high power but low efficiency.

[0029] In addition, in a microwave electromagnetic field environment, the temperature sensor is easily affected by electromagnetic interference. The dynamic changes in microwave energy coupling efficiency during the heating process vary depending on the usage of different users, i.e., are correlated with the usage habits of the electronic atomizer, making it extremely difficult to control the atomization temperature using a fixed power output curve.

[0030] Based on the above research and development background, the present application aims to provide an electronic atomization device 100 that addresses the above problems in the prior art. The device uses microwaves to heat and atomize an aerosol-generating substrate, avoiding the problems of uneven heating caused by resistance heating, and the generation of harmful substances due to carbon deposition and overheating on the heating pin sheet. It also achieves continuous and uniform heating of the aerosol-generating substrate by microwaves, maximizes microwave heating efficiency, achieves rapid atomization, ensures consistency in the atomization inhalation sensation, and improves the consumer inhalation experience.

[0031] As shown in Figures 1 and 2, the present application provides, in one embodiment, an electronic atomization device 100, which includes an atomizer 10 and a microwave generator 60. The atomizer 10 includes an atomization assembly 20 and a transmission assembly 40, within which a transfer passage 21 and a microwave resonant cavity 23 are formed. The transfer passage 21 accommodates an aerosol-generating substrate, and at least a portion of the transfer passage 21 communicates with the microwave resonant cavity 23 to form an atomization region 213. The transmission assembly 40 is controlled so that at least a portion of the transfer passage 21 enters the transfer passage 21 and drives the aerosol-generating substrate to move along the transfer passage 21. That is, the atomization region 213 is formed in the region of the transfer passage 21 that communicates with the microwave resonant cavity 23, and microwaves generated in the microwave resonant cavity 23 are transmitted to the atomization region 213 of the transfer passage 21. That is, a microwave resonant cavity 23 is formed within the atomization assembly 20, and the microwave generator 60 emits microwaves into the microwave resonant cavity 23, thereby forming a coaxial resonant cavity that generates electromagnetic vibrations within the microwave resonant cavity 23. The microwave resonant cavity 23 is connected to the atomization area 213 of the conveying passage 21, and the microwaves within the microwave resonant cavity 23 are transmitted to the atomization area 213.

[0032] Thus, the atomization region 213 in the conveying passage 21 is located on the path of movement of the aerosol-generating substrate. When the electronic atomization device 100 is used, the aerosol-generating substrate is placed in the conveying passage 21, and is pushed by the transmission assembly 40 to move along the axial direction of the transmission assembly 40. Different portions of the aerosol-generating substrate pass through the atomization region 213 in turn, whereby the current portion of the aerosol-generating substrate is heated and atomized using microwaves transmitted to the atomization region 213. During use, after the current portion of the aerosol-generating substrate is atomized and its internal material is changed, the transmission assembly 40 pushes the next portion of the aerosol-generating substrate to the atomization region 213, where it can be microwave-heated and atomized. In this way, during the entire atomization process, the non-atomized part of the aerosol-generating substrate is constantly transported to the atomization region 213, and the material and dielectric properties of the aerosol-generating substrate in the atomization region 213 are nearly consistent at different periods, the performance of the aerosol-generating substrate in the atomization region 213 is stable, and the inhalation sensation of atomization is always consistent, improving the atomization performance.

[0033] Preferably, the atomization region 213 in the transport passage 21 is connected to the point in the microwave resonant cavity 23 where the electric field is strongest, and microwaves with a high electric field strength in the microwave resonant cavity 23 are transmitted to the atomization region 213, and the aerosol-generating substrate in the atomization region 213 is heated using a high-intensity time-varying electric field.

[0034] In some embodiments, the atomizer 10 further includes a coupling antenna 50, one end of which is connected to the microwave generator 60 and the other end of which is inserted into the microwave resonant cavity 23 to emit microwaves, so that the microwaves generated by the microwave generator 60 are transmitted into the microwave resonant cavity 23 by the coupling antenna 50. Preferably, the coupling antenna 50 is suspended within the microwave generating cavity or connected to the cavity wall of the microwave resonant cavity 23, and the specific form can be determined according to actual needs.

[0035] 2, in some embodiments, the transport passage 21 includes a first end 231 and a second end 232 that are axially opposed to each other, and the microwave resonant cavity 23 is spaced from the first end 231 and communicates with the transport passage 21, further forming an atomization region 213. The transmission assembly 40 is controlled to drive the aerosol-generating substrate to move within the transport passage 21 along a direction from the first end 231 to the second end 232. That is, the atomization region 213 communicating with the microwave resonant cavity 23 in the conveying passage 21 is spaced a fixed distance from the first end 231. Thus, when the transmission assembly 40 drives the aerosol-generating substrate to move along a direction from the first end 231 to the second end 232, different portions of the aerosol-generating substrate move sequentially from the first end 231 to the atomization region 213 spaced a fixed distance from the first end 231, and different portions of the aerosol-generating substrate are heated and atomized in the atomization region 213.

[0036] Preferably, the electric field strength within the microwave resonant cavity 23 is gradually increased along the direction from the first end 231 to the second end 232, i.e., the electric field strength is greatest at the side closer to the second end 232 of the microwave resonant cavity 23, and the side closer to the second end 232 of the microwave resonant cavity 23 is the location where the electric field strength within the microwave resonant cavity 23 is strongest. Note that a resonant cavity that generates electromagnetic vibration is formed within the microwave resonant cavity 23, and the resonant cavity may be, for example, a coaxial resonant cavity, a capacitance-loaded resonant cavity, or a cylindrical cavity. Microwave energy injected into the microwave resonant cavity 23 concentrates a high-intensity time-varying electric field in the atomization region 213, thereby providing an energy point for microwave heating atomization. The transmission assembly 40 is controlled to drive the aerosol-generating substrate to move in the conveying passage 21 along a direction from the first end 231 to the second end 232, thereby aligning the movement direction of the aerosol-generating substrate with the direction in which the electric field strength in the microwave resonant cavity 23 changes from weak to strong, thereby gradually pushing different parts of the aerosol-generating substrate into the atomization region 213 where the electric field strength is strong, so that the aerosol-generating substrate can be gradually and uniformly heated and atomized.

[0037] 2, during the heating operation, the long aerosol-generating substrate is divided into a heated portion s, a preheating portion a, an atomization heating portion b, a maintaining portion c, and a cooling portion d. The maintaining portion c and the preheating portion a are located on either side of the atomization heating portion b, and the cooling portion d is located on the side of the maintaining portion c away from the atomization heating portion b. In this way, for the heating atomization system, a new atomization heating portion b is always transported to the atomization region 213, and the microwave atomization system is always in a steady state.

[0038] Furthermore, the atomization assembly 20 is made of a metal member, and the cavity walls of the microwave resonant cavity 23 and the transport passage 21 are both made of a metal material. By using a metal material for the cavity wall of the microwave resonant cavity 23, a resonant cavity that generates electromagnetic vibrations is formed within the microwave resonant cavity 23. The resonant cavity may be, for example, a coaxial resonant cavity, a capacitance-loaded resonant cavity, or a cylindrical cavity. Microwave energy injected into the microwave resonant cavity 23 concentrates a high-intensity time-varying electric field in the atomization region 213, thereby providing an energy point for microwave heating atomization. Furthermore, the cavity wall of the transport passage 21 is made of metal and the microwave frequency of the microwave generator 60 is cut off. This causes the microwave energy to attenuate geometrically in the transport passage 21 in the direction away from the atomization area 213. That is, the further away from the atomization area 213, the smaller the microwave energy. In this way, the microwave energy is concentrated in the atomization area 213, causing heating and atomization over a small area, thereby achieving the goal of maintaining the consistency of the inhalation sensation.

[0039] Specifically, microwave transmission is cut off within the cartridge transport passage 21, and energy attenuation is very rapid. If the diameter of the transport passage 21 is d (mm), then according to the microwave circular waveguide transmission theory, the formula for the attenuation coefficient α (dB / m) of microwave energy within the transport passage 21 is as follows:

[0040]

number

[0041] If the microwave frequency in the heating cavity is 2.45 G, then when substituted into equation (1), α≈4 (dB / mm), that is, microwave energy is attenuated by 4 dB for every 1 mm in the waveguide of the shielding section.

[0042] By substituting the typical heating frequency and the hole diameter required for HNB tobacco into equations (1) and (2), the following calculations were made: [Table 1]

[0043] As can be seen from this, the energy attenuates by 60% to 70% for every 1 mm away from the atomization region 213, and the energy at a position 2 mm away from the atomization region 213 does not reach 1 / 10 of the energy at the atomization region 213, so only the portion of the aerosol-generating substrate in the transport passage 21 that is located in the atomization region 213 is heated and atomized, thereby achieving the purpose of maintaining the consistency of the inhalation sensation described above.

[0044] Furthermore, depending on factors such as the number of puffs, interval time, and temperature, the electronic atomization device 100 automatically controls the conveying speed and microwave power of the transmission assembly 40 to match and couple the microwave power with the current portion located within the atomization region 213 of the aerosol-generating substrate, maintaining high electromagnetic coupling efficiency and automatically ensuring consistency of the puff feeling.

[0045] 1 , in some embodiments, the conveying passage 21 includes a first conveying passage 212 and a second conveying passage 214 arranged coaxially, the first conveying passage 212 being adjacent to a first end 231, and the second conveying passage 214 being adjacent to a second end 232. The microwave resonant cavity 23 communicates between the first conveying passage 212 and the second conveying passage 214 to form an atomization region 213. That is, the conveying passage 21 includes the first conveying passage 212 and the second conveying passage 214 arranged on both axial sides of the atomization region 213. The atomization region 213 is located between the first conveying passage 212 and the second conveying passage 214, and the aerosol-generating substrate in the conveying passage 21 is pushed by the transmission assembly 40 to move from the first conveying passage 212 to the second conveying passage 214, allowing each portion of the aerosol-generating substrate to move axially through the atomization region 213, providing sufficient movement space for the aerosol-generating substrate.

[0046] Furthermore, microwave resonant cavity 23 is provided surrounding the outer periphery of first transport passage 212 and atomization region 213, and generates microwave energy that can be transmitted to atomization region 213. Second transport passage 214 protrudes out of microwave resonant cavity 23, thereby accommodating cooled portion d after the aerosol-generating substrate has been heated and atomized by second transport passage 214.

[0047] 1, the atomization assembly 20 further includes an inner housing 26 and an outer housing 28 fitted together. The inner housing 26 defines a transfer passage 21 therein, and the outer housing 28 and at least a portion of the inner housing 26 are spaced apart from each other, defining a microwave resonant cavity 23 therebetween. The inner housing 26 and the outer housing 28 are thus enclosed to form the transfer passage 21 and the microwave resonant cavity 23, and the aerosol-generating substrate in the transfer passage 21 is heated and atomized.

[0048] Furthermore, the inner housing 26 is formed with an opening 25 that connects the microwave resonant cavity 23 to the conveying passage 21. The area of ​​the conveying passage 21 that is in communication with the opening 25 along its radial direction is the atomization area 213. That is, the area of ​​the conveying passage 21 that is in communication with the opening 25 along its radial direction is configured to form the atomization area 213. The high-intensity, time-varying electric field in the microwave resonant cavity 23 acts on the atomization area 213 through the opening 25, thereby subjecting the aerosol-generating substrate in the atomization area 213 to microwave heating and atomization. In this way, when different parts of the interior of the aerosol-generating substrate successively pass through the atomization area 213 using the transmission assembly 40, the electric field strength of the atomization area 213 is high and the area is narrow, so that the amount of the aerosol-generating substrate heated per unit time is small, the temperature rise is fast, the pre-heating time is short, and the switching inertia is small, thereby enabling instant suction and instant stop. Furthermore, after the aerosol-generating substrate is completely atomized, it is pushed out by the transmission assembly 40, making it easy to remove the aerosol-generating substrate.

[0049] Furthermore, in some embodiments, opening 25 is annular and atomization region 213 is fitted within opening 25, and thus the annular space formed within opening 25 itself forms atomization region 213 and effectively transmits microwave energy through opening 25 to atomization region 213.

[0050] In some embodiments, inner housing 26 includes an inner conductor 261, and outer housing 28 includes an outer conductor. Inner conductor 261 and outer conductor are spaced apart to form microwave resonant cavity 23. Inner conductor 261 defines an edge adjacent first end 231 of opening 25, and outer conductor defines an edge adjacent second end 232 of opening 25. In this manner, inner conductor 261 and outer conductor cooperate to form microwave resonant cavity 23 and opening 25, and utilize energy from the point of strongest electric field within the resonant cavity to atomize and heat a localized region of the aerosol-generating substrate through opening 25.

[0051] Furthermore, in some embodiments, the inner housing 26 further includes an upper housing 263 adjacent to the second end 232. The upper housing 263 is connected to the outer conductor and, together with the outer conductor, defines an edge of the opening 25 adjacent to the second end 232. The first transport passage 212 is formed within the inner conductor 261 itself, and the second transport passage 214 is formed within the upper housing 263 itself. In this manner, the upper housing 263 connected to the outer conductor is provided above the inner conductor 261, and the upper housing 263 is positioned at the tip of the inner conductor 261. By combining the inner conductor 261 and the upper housing 263, a transport passage 21 including the first transport passage 212 and the second transport passage 214 is formed. In addition, an opening 25 is defined between the inner conductor 261 and the connection point between the upper housing 263 and the outer conductor, thereby connecting the microwave resonant cavity 23 between the outer conductor and the inner conductor 261 to the transport passage 21 within the inner housing 26.

[0052] Furthermore, in some embodiments, a receiving cavity is further formed inside the inner conductor 261. The receiving cavity is located on the opposite side of the first conveying passage 212 from the second conveying passage 214 and receives at least a portion of the transmission assembly 40. In this manner, the transmission assembly 40 is located at the bottom of the first conveying passage 212 and can continuously push the aerosol-generating substrate in the first conveying passage 212 to the second conveying passage 214 at the top. The opening 25 is formed at one end of the inner conductor 261 away from the receiving cavity, which corresponds to being formed at the top of the inner conductor 261. That is, the opening 25 is located at the top of the microwave resonant cavity around the outer periphery of the inner conductor 261. This point is where the electric field intensity in the resonant cavity is strongest, and microwave energy can be effectively used to perform atomization heating.

[0053] In some embodiments, the transmission assembly 40 includes a transmission member 44. One end of the transmission member 44 is inserted into the conveying passage 21 and has a mounting surface that supports the aerosol-generating substrate. The transmission member 44 is controlled to move up and down along the axial direction of the conveying passage 21, and can further push the aerosol-generating substrate along the axial direction of the conveying passage 21 via the transmission member 44.

[0054] Furthermore, the transmission assembly 40 further includes a driving member 42. The driving member 42 is provided outside the conveying passage 21. One end of the transmission member 44 is connected to the output end of the driving member 42, and the other end of the transmission member 44 is extendable and slidable within the conveying passage 21. The driving member 42 drives the transmission member 44 to move up and down along the axial direction of the conveying passage 21, thereby providing a driving force to the transmission member 44. Specifically, the driving member 42 is provided within the accommodating cavity of the inner conductor 261.

[0055] In some embodiments, the atomizer 10 further includes an air pipe 70 fitted into the inner wall of the transfer passage 21. The air pipe 70 shields the opening 25 and allows microwaves to pass through. The air pipe 70 houses the aerosol-generating substrate, and the transmission assembly 40 is at least partially inserted into the air pipe 70. Thus, the air pipe 70 is fitted outside the aerosol-generating substrate, and the air pipe 70 collects the generated atomized aerosol and prevents the atomized aerosol from flowing through the opening 25 to other areas. At the same time, the air pipe 70 is configured to allow microwaves to pass through without affecting microwave heating of the atomization region 213.

[0056] Furthermore, the atomizer 10 further includes a suction nozzle 80, which is fitted into the atomizing assembly 20 and communicates with the conveying passage 21, so that the atomized aerosol generated in the conveying passage 21 enters the suction nozzle 80 and is inhaled by the user. Preferably, the suction nozzle 80 communicates with the interior of the ventilation pipe 70 so that the atomized aerosol in the ventilation pipe 70 can be inhaled by the user.

[0057] In one embodiment of the present application, there is further provided an atomizer 10. The atomizer 10 includes an atomization assembly 20 and a transmission assembly 40. A conveying passage 21 and a microwave resonant cavity 23 are formed inside the atomization assembly 20. The microwave resonant cavity 23 is disposed so as to surround at least a portion of the outer periphery of the conveying passage 21. The transmission assembly 40 is controlled so as to at least partially enter the conveying passage 21 and drive the aerosol-generating substrate to move within the conveying passage 21 along the axial direction of the transmission assembly 40. The conveying passage 21 has an atomization region 213, which communicates with a region in the microwave resonant cavity 23 where the electric field intensity is strongest. In other words, a microwave resonant cavity 23 is formed within the atomization assembly 20, and the microwave generator 60 emits microwaves into the microwave resonant cavity 23, thereby forming a coaxial resonant cavity that performs electromagnetic vibration within the microwave resonant cavity 23, and the area within the microwave resonant cavity 23 where the electric field is strongest is connected to the atomization area 213 of the conveying passage 21, and microwaves with a strong electric field strength within the microwave resonant cavity 23 are emitted to the atomization area 213.

[0058] The atomization region 213 is located in the path of travel of the aerosol-generating substrate. When the electronic atomization device 100 is used, the aerosol-generating substrate is placed in the transport passage 21 and pushed by the transmission assembly 40 to move along the axial direction of the transmission assembly 40. Different portions of the aerosol-generating substrate pass through the atomization region 213 in sequence, whereby the current portion of the aerosol-generating substrate is heated and atomized using the high-intensity, time-varying electric field transmitted to the atomization region 213. During use, after the current portion of the aerosol-generating substrate is atomized and its internal material is changed, the transmission assembly 40 pushes the aerosol-generating substrate along the axial direction of the transmission assembly 40, allowing the next portion of the atomized current portion to be transferred to the atomization region 213 for microwave heating and atomization. In this way, during the entire atomization process, the non-atomized part of the aerosol-generating substrate is constantly transported to the atomization region 213, and the material and dielectric properties of the aerosol-generating substrate in the atomization region 213 are nearly consistent at different periods, the performance of the aerosol-generating substrate in the atomization region 213 is stable, and the inhalation sensation of atomization is always consistent, improving the atomization performance.

[0059] The technical features of the above embodiments can be arbitrarily combined. For the sake of brevity, not all possible combinations of the technical features of the above embodiments are described, but all such combinations should be considered to fall within the scope of the present specification unless there is a contradiction.

[0060] The above examples only describe some embodiments of the present application, and although the descriptions are specific and detailed, they should not be construed as limiting the scope of the present patent. Those skilled in the art may make various modifications and improvements to the present application without departing from the spirit of the present application, and all such modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent should be determined based on the scope of the accompanying claims. [Explanation of symbols]

[0061] 100 electronic atomization device, 10 atomizer, 20 atomization assembly, 21 conveying passage, 212 first conveying passage, 213 atomization region, 214 second conveying passage, 231 first end, 232 second end, 23 microwave resonant cavity, 25 opening, 26 inner housing, 261 inner conductor, 263 upper housing, 28 outer housing, 40 transmission assembly, 42 driving member, 44 transmission member, 50 coupling antenna, 60 microwave generator, 70 ventilation pipe, 80 suction nozzle, s heated portion, a preheating portion, b atomization heating portion, c maintaining portion, d cooling portion

Claims

1. an atomization assembly having a transfer passage and a microwave resonant cavity formed therein, the transfer passage configured to accommodate an aerosol-generating substrate, and at least a portion of the transfer passage in communication with the microwave resonant cavity to form an atomization region; a transmission assembly controlled to drive the aerosol-generating substrate to move within the transport passage and to move an unatomized portion of the aerosol-generating substrate to the atomization region.

2. the transport passage includes a first end and a second end that are axially opposed to each other, the microwave resonant cavity being spaced from the first end and communicating with the transport passage to form the atomization region; 2. The atomizer of claim 1, wherein the transmission assembly is controlled to drive the aerosol-generating substrate to move within the transport passage along a direction from the first end toward the second end.

3. 3. The atomizer according to claim 2, wherein the transport passage includes a first transport passage and a second transport passage arranged coaxially, the first transport passage adjacent to the first end, the second transport passage adjacent to the second end, and the microwave resonant cavity communicating between the first transport passage and the second transport passage to form the atomization region.

4. The atomizing assembly includes an inner housing and an outer housing fitted to each other, the conveying passage is formed inside the inner housing, the outer housing and at least a portion of the inner housing are spaced apart from each other, and the microwave resonant cavity is defined therebetween; 4. The atomizer according to claim 3, wherein an opening is formed in the inner housing, connecting the microwave resonant cavity and the conveying passage, and a region of the conveying passage that is in communication with the opening along its radial direction is the atomization region.

5. 5. The atomizer of claim 4, wherein the inner housing includes an inner conductor and the outer housing includes an outer conductor, the inner and outer conductors being spaced apart to form the microwave resonant cavity, the inner conductor defining an edge adjacent the first end of the opening, and the outer conductor defining an edge adjacent the second end of the opening.

6. the inner housing further includes an upper housing adjacent to the second end, the upper housing connected to the outer conductor and defining, together with the outer conductor, an edge of the opening adjacent to the second end; 6. The atomizer according to claim 5, wherein the first transport passage is formed inside the inner conductor itself, and the second transport passage is formed inside the upper housing itself.

7. the transmission assembly includes a transmission member, one end of the transmission member being inserted into the conveying passage and having a mounting surface for supporting the aerosol-generating substrate; The atomizer according to any one of claims 1 to 6, wherein the transmission member is controlled to move up and down along the axial direction of the conveying passage.

8. 7. The atomizer according to claim 4, further comprising an air pipe fitted into an inner wall of the conveying passage, the air pipe shielding the opening and allowing microwaves to pass through, the air pipe accommodating the aerosol-generating substrate, and at least a portion of the transmission assembly extending into the air pipe.

9. The atomizer according to any one of claims 1 to 6, wherein the atomizing assembly is a metal member, and the microwave resonant cavity and the cavity wall of the transport passage are both made of metal material.

10. 7. The atomizer of claim 1, further comprising a coupling antenna, one end of the coupling antenna being connected to a microwave generator and the other end of the coupling antenna being inserted into the microwave resonant cavity to emit microwaves.

11. 7. An electronic atomization device comprising: a microwave generator; and the atomizer according to any one of claims 1 to 6, wherein the microwave generator is configured to emit microwaves into the microwave resonant cavity.

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