Atomizers and electronic atomizers

Abstract

The present application relates to an atomizer (10) and an electronic atomizing device (100). The atomizer (10) includes an atomizing assembly (20) having a conveying passage (21) and a microwave resonant cavity (23) formed therein, the conveying passage (21) configured to accommodate an aerosol-generating substrate, at least a portion of the conveying passage (21) communicating with the microwave resonant cavity (23) to form an atomization region, and a transmission assembly (40) at least a portion of which enters the conveying passage (21) and is controlled to drive the aerosol-generating substrate to move within the conveying passage (21). The conveying passage (21) has an atomization region, which communicates with the microwave resonant cavity (23) and is located in the movement path of the aerosol-generating substrate, and the aerosol-generating substrate can be pushed by the transmission assembly (40) to move along its axial direction. During the entire atomization process, the non-atomized part of the aerosol-generating substrate is constantly transported to the atomization area, so that the material and dielectric properties of the aerosol-generating substrate in the atomization area are nearly consistent during different periods, and the inhalation sensation of atomization can always be consistent.

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

[0003] Aerosol is a colloidal dispersion system formed by dispersing and suspending fine particles of solid or liquid in a gas medium, and since the aerosol is inhaled into the human body through the respiratory system, it provides a new alternative inhalation method for users. For example, an atomizing device that generates an aerosol by baking and heating an aerosol-generating substrate such as herbs or pastes can be applied in different fields and can supply inhalable aerosol to users, replacing conventional product forms and inhalation methods.

[0004] Electronic atomizers generally use a resistance method to heat the aerosol-generating substrate, but this heating method requires a long pre-heating waiting time, and the heating is non-uniform, the local temperature is too high, and there are problems such as the heating pin or heating sheet being burned out and caulked, and there are also problems such as carbon and tar being deposited on the pin or sheet, which makes cleaning difficult, etc. In recent years, microwave heating has become the 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 entire aerosol-generating substrate has low energy coupling efficiency during the heating process and poor taste consistency. Summary of the Invention [Problem to be solved by the invention]

[0005] Based on this, 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 transport passage and a microwave resonant cavity formed therein, the transport passage configured to receive an aerosol-generating substrate, at least a portion of the transport passage in communication with the microwave resonant cavity to define an atomization region; and 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 used, the aerosol-generating substrate is put into the conveying passage, and the aerosol-generating substrate is pushed by the transmission assembly to move along the axial direction of the transmission assembly, and different parts of the aerosol-generating substrate pass through the atomization region in sequence, so that the current part of the aerosol-generating substrate is heated and atomized by the microwaves transmitted to the atomization region. During use, after the current part of the aerosol-generating substrate is atomized and its internal material is changed, the transmission assembly pushes the next part of the atomized current part of the aerosol-generating substrate to the atomization region for microwave heating and atomization. In this way, during the entire atomization process, the non-atomized part of the aerosol-generating substrate is always conveyed to the atomization region, and the material and dielectric properties of the aerosol-generating substrate in the atomization region are almost consistent in different periods, the performance of the aerosol-generating substrate in the atomization region is stable, and the sucking sensation of the atomization is always consistent, improving the 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 area.

[0010] In one embodiment, the atomization assembly includes an inner housing and an outer housing fitted together, 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 to define the microwave resonant cavity therebetween, the inner housing has an opening formed therein that connects the microwave resonant cavity to the conveying passage, and the area of ​​the conveying passage that communicates with the opening along its radial direction is the atomization area.

[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, together with the outer conductor, an edge adjacent to the second end of the opening, 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 fitted into 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 enters the microwave resonant cavity to emit microwaves.

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

[0018] In order to more clearly describe the technical means in the embodiments of the present application or the prior art, the following briefly describes 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 labor. [Brief description 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; [Diagram 2] FIG. 2 shows the change in an aerosol-generating substrate heated by the electronic atomizer shown in FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] In order to make the above objects, features and advantages of the present application clearer and easier to understand, the 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 described to provide a complete 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 improvements 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 the present application, the orientations or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are orientations or positional relationships shown in the drawings, and are used only to facilitate or simplify the description of the present application, and are not intended to represent or imply that the devices or parts shown necessarily have a specific orientation or a specific orientation structure and operation, and therefore should not be construed as limiting the present 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 imply a number of the technical features depicted. Thus, a feature qualified as "first" or "second" may explicitly or implicitly include at least one of the feature. In the present description, unless otherwise clearly and specifically limited, "plurality" means at least two, e.g., two, three, etc.

[0023] In this application, unless otherwise clearly specified and limited, the terms "attached", "coupled", "connected" and the like should be understood in a broad sense, for example, may be 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 meaning of the above terms in this application according to the specific situation.

[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 feature and the second feature, or indirect contact between the first feature and the second feature via an intermediate medium. Furthermore, a first feature being "above," "above," and "on the upper surface" of a second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates 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 includes the first feature being directly below or diagonally below the second feature, or simply indicates 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 "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 be intervening elements present as well. The terms "vertical," "horizontal," "up," "down," "left," "right," and similar terms used herein are for illustrative purposes only and do not represent the only embodiments.

[0026] As mentioned in the background art, resistive heating uses an external power source to heat a resistive element, and the heated resistive element transfers heat to the aerosol-generating substrate by thermal conduction. Therefore, conventional resistive heating has the following disadvantages: 1. The temperature at the local position where the aerosol-generating substrate and the heat-generating member are in contact is high, and other positions cannot receive heat quickly, so there is a certain temperature gradient, which causes uneven heating and affects the inhalation feeling. 2. During the inhalation process, the heat-generating member continues to heat up, which creates potential safety risks and is prone to the generation of harmful substances due to thermal decomposition. 3. Because it is contact heating, the aerosol-generating substrate and the heat-generating member are in contact for a long time, which is prone to carbon deposition, which is prone to the generation of a burnt smell, and which is very inconvenient to clean. 4. Because it is conductive heating, a large temperature difference is required between the heat-generating member and the heated aerosol-generating substrate in order to shorten the pre-heating time, which causes disadvantages such as a high temperature of the electronic atomization device 100, high insulation costs, and long cooling times. 5. Most heating members are pin or sheet-shaped, which makes it inconvenient to remove the aerosol-generating substrate.

[0027] Microwave heating, as a type of radiative heating, does not require the heat transfer of a heating element, and can solve the above-mentioned 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 needs to maintain about 12 puffs, so that the composition of the smoke emitted by the cartridge at each time step during the entire heating process is significantly different, which affects the consistency of the puff feeling.

[0028] Specifically, according to the principle of microwave heating, the microwave absorption capacity (dielectric constant) of the material is affected by temperature and components. During the inhalation process, the temperature of the aerosol-generating substrate rises from room temperature to over 300°C, and after the volatile components are atomized, the mass of the aerosol-generating substrate decreases by about 40%, and the plant fibers are carbonized. During the entire process, the dielectric properties of the aerosol-generating substrate change drastically, and the microwave energy cannot always act on the aerosol-generating substrate with the same material and dielectric properties, so the load of microwave energy cannot always achieve impedance matching, and the resonance frequency of the heating resonant cavity cannot be maintained at the frequency of the microwave radiation source. In other words, the microwave coupling efficiency cannot be always maintained at a high state, so the amount of atomization in each period is different, the feeling of inhalation is not consistent, and the assembly power of the microwave radiation source is large but the efficiency is low.

[0029] In addition, in the microwave electromagnetic field environment, the temperature sensor is easily affected by electromagnetic interference. The dynamic change of microwave energy coupling efficiency during the heating process varies with different users' usage, that is, correlates with the usage habits of the electronic atomization device 100, so it is also very 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, which uses microwaves to heat and atomize an aerosol-generating substrate, avoiding the problems of uneven heating caused by resistive heating, carbon deposition on the heating pin sheet, and overheating that generates harmful substances, while realizing continuous and uniform heating of the aerosol-generating substrate by microwaves, maximizing the microwave heating efficiency, achieving rapid atomization, ensuring the consistency of the inhalation feeling of atomization, and improving the inhalation experience of consumers.

[0031] As shown in Fig. 1 and Fig. 2, the present application provides an electronic atomization device 100 in one embodiment, the device 100 includes an atomizer 10 and a microwave generator 60. The atomizer 10 includes an atomization assembly 20 and a transmission assembly 40, and a conveying passage 21 and a microwave resonant cavity 23 are formed inside the atomization assembly 20. The conveying passage 21 accommodates an aerosol-generating substrate, and at least a portion of the conveying 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 conveying passage 21 enters the conveying passage 21 and drives the aerosol-generating substrate to move along the conveying passage 21. That is, the atomization region 213 is formed in the communication region of the conveying passage 21 with the microwave resonant cavity 23, and the microwave generated in the microwave resonant cavity 23 is transmitted to the atomization region 213 of the conveying passage 21. That is, a microwave resonant cavity 23 is formed in 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 in the microwave resonant cavity 23, and the microwave resonant cavity 23 is connected to the atomization area 213 of the conveying passage 21, so that the microwaves in 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 movement path of the aerosol-generating substrate. When the electronic atomization device 100 is used, when the aerosol-generating substrate is put into the conveying passage 21, the aerosol-generating substrate can be pushed by the transmission assembly 40 to move along the axial direction of the transmission assembly 40, and different portions of the aerosol-generating substrate pass through the atomization region 213 in sequence, so that the current portion of the aerosol-generating substrate is heated and atomized by using the 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 next portion of the aerosol-generating substrate can be pushed by the transmission assembly 40 to move 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, the material and dielectric properties of the aerosol-generating substrate in the atomization region 213 are almost consistent during different periods, the performance of the aerosol-generating substrate in the atomization region 213 is stable, and the inhalation sensation of the atomization is always consistent, thereby improving the atomization performance.

[0033] Preferably, the atomization area 213 in the conveying 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 area 213, and the aerosol-generating substrate in the atomization area 213 is heated by 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 enters 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 provided floating in the microwave generating cavity or connected to the cavity wall of the microwave resonant cavity 23, and the specific form can be provided according to actual needs.

[0035] 2, in some embodiments, the transport passage 21 includes a first end 231 and a second end 232 disposed axially opposite to each other, and the microwave resonant cavity 23 is spaced from the first end 231 and in communication 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. In other words, the atomization area 213 communicating with the microwave resonant cavity 23 in the conveying passage 21 is spaced a fixed distance from the first end 231, and 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 sequentially move from the first end 231 to the atomization area 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 area 213.

[0036] Preferably, the electric field strength in the microwave resonant cavity 23 is gradually increased along the direction from the first end 231 to the second end 232, that is, the electric field strength is maximum at the side close to the second end 232 of the microwave resonant cavity 23, and the side close to the second end 232 of the microwave resonant cavity 23 is the location where the electric field strength in the microwave resonant cavity 23 is strongest. In addition, a resonant cavity that performs electromagnetic vibration is formed in the microwave resonant cavity 23, and the resonant cavity is specifically a coaxial resonant cavity, a capacity-loaded resonant cavity, a columnar cavity, etc., and the microwave energy injected into the microwave resonant cavity 23 provides an energy point for microwave heating atomization by concentrating a high-intensity time-varying electric field in the atomization region 213. The transmission assembly 40 is controlled to drive the aerosol-generating substrate to move along a direction from the first end 231 to the second end 232 within the conveying passage 21, thereby aligning the moving 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 heating target 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 both sides 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 and atomization system, a new atomization and 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 a metal member, and the cavity walls of the microwave resonant cavity 23 and the conveying passage 21 are both made of metal materials. In this way, by making the cavity walls of the microwave resonant cavity 23 out of metal materials, a resonant cavity that performs electromagnetic vibration is formed in the microwave resonant cavity 23. The resonant cavity is specifically a coaxial resonant cavity, a volume-loaded resonant cavity, a columnar cavity, etc., and the 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. In addition, by making the cavity wall of the transport passage 21 out of a metal material and cutting off the microwave frequency of the microwave generator 60 arranged therein, the microwave energy in the transport passage 21 attenuates in a geometric multiple along the direction away from the atomization area 213; that is, the microwave energy becomes smaller the further away from the atomization area 213. In this way, the microwave energy is concentrated in the atomization area 213 to perform heating and atomization over a small area, and the purpose of maintaining the consistency of the above-mentioned inhalation sensation is achieved.

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

[0040]

number

[0041] If the microwave frequency in the heating cavity is 2.45 G, substituting this into equation (1) gives α≈4 (dB / mm), i.e., the 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 cigarettes into equations (1) and (2), the following calculation was made: [Table 1]

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

[0044] Furthermore, according to 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 area 213 of the aerosol-generating substrate, thereby 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 is adjacent to a first end 231, the second conveying passage 214 is adjacent to a second end 232, and 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 part of the aerosol-generating substrate to move along the axial direction and pass through the atomization region 213, providing a sufficient movement space for the aerosol-generating substrate.

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

[0047] 1, the atomization assembly 20 further includes an inner housing 26 and an outer housing 28 fitted to each other. A transport passage 21 is formed inside the inner housing 26, and the outer housing 28 and at least a part of the inner housing 26 are spaced apart from each other to define a microwave resonant cavity 23 therebetween. In this manner, the transport passage 21 and the microwave resonant cavity 23 are formed by being surrounded by the inner housing 26 and the outer housing 28, and the aerosol-generating substrate in the transport passage 21 is heated and atomized.

[0048] In addition, the inner housing 26 is formed with an opening 25 that communicates the microwave resonant cavity 23 with the conveying passage 21, and the area of ​​the conveying passage 21 that communicates with the opening 25 along its own radial direction is the atomization area 213, that is, the area of ​​the conveying passage 21 that communicates with the opening 25 in the 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, and further microwave heating atomization can be performed on the aerosol-generating substrate in the atomization area 213. In this way, when different parts inside the aerosol-generating substrate pass through the atomization area 213 successively by the transmission assembly 40, the electric field intensity 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, the switching inertia is small, and instantaneous suction and instantaneous stop can be realized. Additionally, after the aerosol-generating substrate is completely atomized, it is pushed out by the transmission assembly 40, facilitating removal of the aerosol-generating substrate.

[0049] Further, in some embodiments, the opening 25 is annular and the mist region 213 is fitted within the opening 25, such that the annular space formed within the opening 25 itself forms the mist region 213 and effectively transfers microwave energy through the opening 25 to the mist 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 aperture 25, and outer conductor defines an edge adjacent second end 232 of aperture 25. In this manner, inner conductor 261 and outer conductor cooperate with each other to form microwave resonant cavity 23 and aperture 25, and utilize energy from the location of strongest electric field within the resonant cavity to atomize and heat a localized region of the aerosol-generating substrate through aperture 25.

[0051] Further, 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 defines an edge adjacent to the second end 232 of the opening 25 together with the outer conductor, and the first transport passage 212 is formed inside the inner conductor 261 itself, and the second transport passage 214 is formed inside 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, and the inner conductor 261 and the upper housing 263 are combined to form a transport passage 21 including the first transport passage 212 and the second transport passage 214. In addition, an opening 25 is defined between the connection point between the upper housing 263 and the outer conductor and the inner conductor 261, whereby the microwave resonant cavity 23 between the outer conductor and the inner conductor 261 communicates with the transport passage 21 in 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 part 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. In addition, 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, it is located at the top of the microwave resonant cavity on the outer periphery of the inner conductor 261, and this location is the location where the electric field intensity in the resonant cavity is strongest, and the microwave energy is 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 transport passage 21 and has a mounting surface for supporting the aerosol-generating substrate, and the transmission member 44 is controlled to move up and down along the axial direction of the transport passage 21, and further, the aerosol-generating substrate can be pushed via the transmission member 44 to move along the axial direction of the transport passage 21.

[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 telescopically inserted into 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 in the receiving 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 transport passage 21. The air pipe 70 shields the opening 25 and allows microwaves to pass through. The air pipe 70 contains the aerosol-generating substrate, and the transmission assembly 40 is at least partially inserted into the air pipe 70, thus fitting the air pipe 70 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 regions. At the same time, the air pipe 70 is configured to allow microwaves to pass through and does not affect microwave heating of the atomization region 213.

[0056] In addition, the atomizer 10 further includes a suction nozzle 80, which is fitted into the atomizing assembly 20 and communicates with the conveying passage 21, and 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 inside of the ventilation pipe 70 so that the atomized aerosol in the ventilation pipe 70 is inhaled by the user.

[0057] In one embodiment of the present application, an atomizer 10 is further provided. The atomizer 10 includes an atomizing assembly 20 and a transmission assembly 40. A conveying passage 21 and a microwave resonant cavity 23 are formed inside the atomizing assembly 20. The microwave resonant cavity 23 is provided to surround at least a part of the outer periphery of the conveying passage 21. The transmission assembly 40 is controlled so that at least a part of the conveying passage 21 enters the conveying passage 21 and drives the aerosol generating substrate to move in the conveying passage 21 along the axial direction of the transmission assembly 40. The conveying passage 21 has an atomizing region 213, and the atomizing region 213 corresponds to and 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 in 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 high electric field strength within the microwave resonant cavity 23 are emitted to the atomization area 213.

[0058] In addition, the atomization region 213 is located on the moving path of the aerosol-generating substrate. When the electronic atomization device 100 is used, the aerosol-generating substrate is put into the conveying passage 21, and the aerosol-generating substrate is pushed by the transmission assembly 40 to move along the axial direction of the transmission assembly 40, and different portions of the aerosol-generating substrate pass through the atomization region 213 in sequence, thereby heating and atomizing the current portion of the aerosol-generating substrate by utilizing 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 to move along the axial direction of the transmission assembly 40, so that the next portion of the atomized current portion can be moved 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, the material and dielectric properties of the aerosol-generating substrate in the atomization region 213 are almost consistent during different periods, the performance of the aerosol-generating substrate in the atomization region 213 is stable, and the inhalation sensation of the atomization is always consistent, thereby improving the atomization performance.

[0059] The technical features of the above embodiments can be arbitrarily combined. For the sake of brevity, all possible combinations of the technical features in the above embodiments are not 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. It should be noted that those skilled in the art can make various modifications and improvements to the present application without departing from the spirit of the present application, and all of these modifications and improvements belong to the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be based on the scope of the attached claims. [Explanation of symbols]

[0061] 100 electronic atomization device, 10 atomizer, 20 atomization assembly, 21 transport passage, 212 first transport passage, 213 atomization region, 214 second transport 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 heating target portion, a preheating portion, b atomization heating portion, c maintaining portion, d cooling portion

Claims

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

2. The transport passage includes a first end and a second end that are axially opposed to each other, and the microwave resonant cavity is spaced from the first end and communicates 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 of 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 to define the microwave resonant cavity therebetween, 4. The atomizer according to claim 3, wherein an opening is formed in the inner housing, the opening communicating the microwave resonant cavity with the transport passage, and a region of the transport passage that communicates with the opening along a radial direction of the transport passage 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 conductor and the outer conductor 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 the second end, the upper housing connected to the outer conductor and defining, together with the outer conductor, an edge of the opening adjacent 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 transport passage and having a support surface for supporting the aerosol-generating substrate; The atomizer according to any one of claims 1 to 6, wherein the transmission member is controlled so as to ascend and descend in the axial direction of the conveying passage.

8. The atomizer according to any one of claims 4 to 6, further comprising an air pipe fitted into the inner wall of the conveying passage, the air pipe shielding the opening and allowing microwaves to pass through, the air pipe housing 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 adapted to enter the microwave resonant cavity to emit microwaves.

11. 11. An electronic atomization device comprising: a microwave generator; and the atomizer according to any one of claims 1 to 10, wherein the microwave generator is configured to emit microwaves into the microwave resonant cavity.

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