An aerosol generating device

Abstract

This invention provides an aerosol generating device, including an aerosol generating component for generating aerosols and an airflow channel for guiding the flow of aerosols and / or air in an airflow path. The aerosol generating component is used to heat the aerosol generating matrix in the aerosol generating product to generate aerosols. The device is characterized by having a suction resistance adjustment mechanism installed in the airflow path. This mechanism adjusts the total suction resistance of the airflow channel. Through this innovative suction resistance adjustment mechanism, the total suction resistance of the airflow channel can be dynamically adjusted according to the physical changes of the aerosol generating matrix during the heating process, effectively balancing suction resistance fluctuations, optimizing the user's suction experience, and making the suction process more comfortable and consistent.

Description

Technical Field

[0001] This utility model relates to the field of novel tobacco products, and in particular to an aerosol generating device. Background Technology

[0002] In the use of aerosol generators, suction resistance (i.e., the resistance felt by the user during inhalation) is a key user experience indicator. Appropriate suction resistance provides a comfortable user experience, while inappropriate suction resistance can lead to discomfort or affect aerosol generation. Traditional aerosol generators often neglect the adjustable suction resistance in their design. Most devices have a fixed suction resistance, which cannot be dynamically adjusted according to actual usage conditions. This, to some extent, limits the improvement of the user experience.

[0003] Therefore, developing a device that can adjust the suction resistance according to the dynamic changes during the aerosol generation process can not only improve the user experience, but also improve the efficiency and quality of aerosol generation. Utility Model Content

[0004] The purpose of this invention is to provide an aerosol generating device that dynamically compensates for the total suction resistance of the airflow path by adapting to the physical changes of the aerosol generating matrix. This innovative design effectively improves the user experience and meets the personalized suction resistance requirements of different users. Simultaneously, this mechanism can fully utilize the physical changes of the matrix during the heating process to optimize the suction resistance adjustment effect.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An aerosol generating apparatus includes an aerosol generating component for generating aerosols and an airflow channel for guiding the aerosols and / or air to flow in an airflow path. The aerosol generating component is used to heat the aerosol generating matrix in the aerosol generating article to generate aerosols. A suction resistance adjusting mechanism is provided in the airflow path for adjusting the total suction resistance of the airflow channel.

[0007] Furthermore, the suction resistance adjustment mechanism includes a venting section and a shielding section.

[0008] Furthermore, the ventilated part has a ventilated area, and the blocking part moves relative to the ventilated part to block at least a portion of the ventilated area.

[0009] Furthermore, the venting section includes a first elongated hole and a second elongated hole.

[0010] Furthermore, the first elongated hole has a first minimum bounding rectangle, and the second elongated hole has a second minimum bounding rectangle.

[0011] Furthermore, the blocking part can move along a length direction that is not parallel to the length direction of the first minimum bounding rectangle and / or the length direction of the second minimum bounding rectangle.

[0012] Furthermore, the shielding portion includes a first shield corresponding to the first elongated hole and a second shield corresponding to the second elongated hole.

[0013] Furthermore, the angle between the moving direction of the blocking part and the length direction of the first minimum circumscribed rectangle and / or the length of the second minimum circumscribed rectangle is 15-30°, 30-45°, 45-60°, 60-75° or 75-90°.

[0014] Furthermore, the first minimum circumscribed rectangle and the second minimum circumscribed rectangle constitute a grid-like arrangement, an array-like arrangement, a honeycomb-like arrangement, or a spoke-like arrangement.

[0015] Furthermore, the width L of each first minimum bounding rectangle and / or second minimum bounding rectangle satisfies: 0.2mm≤L≤2.2mm.

[0016] Furthermore, the maximum displacement δD of the shielding part satisfies: 0.1L < δD < 2L.

[0017] Furthermore, the venting section and / or shielding section includes at least one converging orifice.

[0018] Furthermore, when the shielding part moves relative to the ventilating part, the converging orifice gradually shrinks along the direction of relative movement, and the effective ventilation area of ​​the ventilating part changes continuously.

[0019] Furthermore, the converging aperture is constructed as a trapezoidal aperture, and the ratio of the long side to the short side of the trapezoidal aperture is at least 4.8:1, 5.0:1, 7.2:1, 9.6:1 or 12.0:1.

[0020] Furthermore, the shielding part includes a converging hole, and the ventilation area of ​​the ventilation part is located at the end of the shielding part.

[0021] Furthermore, the projection of the ventilation area along the airflow channel axis is completely offset from the airflow channel, so that at least a portion of the airflow flows along the convergence orifice in the direction of contraction and / or expansion.

[0022] Furthermore, the thickness T of the shielding part satisfies: 0.5mm≤T≤1mm.

[0023] Furthermore, the aerosol generating device also includes a positioning mechanism, and the blocking part can reciprocate along the positioning mechanism when subjected to external force.

[0024] Furthermore, when the external force stops, the positioning part will restrain the blocking part in a predetermined position to maintain the current ventilation area.

[0025] Furthermore, the positioning mechanism includes elastic elements and engaging components.

[0026] Furthermore, one end of the elastic element is connected to the blocking part, and the other end engages with the locking part.

[0027] Furthermore, the engaging member has multiple positions along the moving direction of the blocking part, and the elastic element can deform when the blocking part moves and guide the blocking part to switch between multiple positions.

[0028] Furthermore, the engaging component includes multiple positioning slots, and the end of the elastic element away from the obstruction portion is provided with a slider that can adapt to the contour of the positioning slot.

[0029] Furthermore, the suction resistance adjustment mechanism is configured to have a first period and a second period within an aerosol generation cycle, wherein the total suction resistance is in a decreasing phase during the first period and in a increasing phase during the second period.

[0030] Furthermore, the aerosol-generating matrix is ​​a plant-based material that expands when heated in the first period and shrinks when dried in the second period.

[0031] Furthermore, the suction resistance adjustment mechanism also includes a thermal response mechanism, which drives the blocking part to move relative to the ventilation part to block at least a portion of the ventilation area when it senses a temperature change in the aerosol generating component.

[0032] Furthermore, the thermal response mechanism is a thermally deformable material.

[0033] Furthermore, a thermally conductive material is also included between the thermal response mechanism and the aerosol generation component.

[0034] Furthermore, the thermodeformable material includes an expandable bladder or a bimetallic sheet, the expandable bladder being made of rubber and containing air or liquid ethanol.

[0035] Furthermore, the suction resistance adjustment mechanism is either a micro-motion suction resistance adjustment mechanism or a gradual suction resistance adjustment mechanism.

[0036] Furthermore, the suction resistance adjustment mechanism also includes a drive mechanism that can drive the blocking part to move relative to the ventilation part to block at least a portion of the ventilation area.

[0037] Furthermore, the drive mechanism includes a power component and an actuator, wherein the power component provides the driving force for the actuator, and the actuator is rigidly connected to the shielding part.

[0038] In this patent, the aerosol generation component is designed with diversity to adapt to different aerosol generation application scenarios. A common aerosol generation component typically generates aerosols by heating the aerosol generation matrix to an appropriate temperature. The heating element can be located inside or outside the aerosol generation matrix, depending on design requirements and the heating method. Optionally, the internal heating element can be in direct contact with or embedded in the aerosol generation matrix, enabling more efficient heat transfer and ensuring the uniformity and speed of the heating process. The internal heating element can take various forms, such as heating blades: the heating blades can be directly inserted into the aerosol generation matrix, transferring heat to the matrix through the heating surface of the blades. This design ensures uniform heat distribution while minimizing heat loss. Sleeves or substrates: Heating elements can be designed as sleeves or substrates with different conductive portions. These sleeves or substrates can be embedded in the aerosol-generating matrix, transferring heat to the matrix via resistance heating. Resistive metal tubes: In this design, a resistive metal tube can penetrate the center of the aerosol-generating matrix. Heating the metal tube with an electric current transfers heat to the matrix. Heating needles or rods: This is a preferred form of internal heating element. One or more heating needles or rods can penetrate the center of the aerosol-generating matrix, directly heating the matrix. This design ensures efficient heat transfer while minimizing heat loss. Heating wires or filaments: For example, heating wires or filaments made of materials such as nickel-chromium (Ni-Cr), platinum, tungsten, or alloy wires can be used. These materials have good conductivity and high-temperature resistance, enabling effective heat transfer. Heating plates: Heating plates can be designed to directly contact the aerosol-generating matrix, transferring heat to the matrix through heating the plate surface. Internal heating elements can also be deposited within or on the surface of a rigid carrier material. For example, a metal material with a well-defined relationship between temperature and resistivity can be used to form a resistance heating element. This design ensures precise control of the heating process and efficient energy transfer. Besides internal heating, a common heating mode is external heating, where the external heating element is located outside the aerosol generating matrix and transfers heat to the matrix through a heating tube or other external structure. External heating elements can take the following forms: Heating tube: It can define a heating cavity, with the aerosol generating matrix placed inside. Heat is transferred to the matrix through the outer wall of the heating tube and via thermal conduction; Electromagnetic induction heating: It generates eddy currents in the aerosol generating matrix through a high-frequency oscillating magnetic field, thus generating heat. This heating method does not require direct contact with the heating element and can achieve rapid and uniform heating; Infrared heating: It uses infrared radiation to transfer heat to the aerosol generating matrix. This heating method can achieve rapid heating, and the heating temperature can be controlled by adjusting the intensity of the infrared radiation.

[0039] An aerosol-forming matrix is ​​a device or matrix that releases volatile compounds upon heating, which can form aerosols for inhalation by a user. Aerosol-forming matrices have diverse compositions and can be selected and optimized according to different needs. Suitable aerosol-forming matrices may include plant-based materials. Plant-based materials refer to aerosol-forming matrices that may include tobacco or tobacco-containing materials containing volatile tobacco flavor compounds, which are released from the aerosol-forming matrix upon heating. Alternatively, aerosol-forming matrices may include tobacco-free materials. Aerosol-forming matrices may include homogenized plant-based materials. Aerosol-forming matrices may include at least one aerosol-forming agent. Aerosol-forming matrices may include other additives and ingredients, such as flavorings. In some embodiments, the aerosol-forming matrix comprises a liquid at room temperature. For example, the aerosol-forming matrix may comprise a liquid solution, suspension, dispersion, etc. In some embodiments, the aerosol-forming matrix comprises a solid at room temperature. For example, the aerosol-forming matrix may comprise tobacco or sugar. Preferably, the aerosol-forming matrix comprises nicotine. Any suitable aerosol-forming matrix can be used with the heating needle of this patent. The aerosol forming matrix is ​​preferably a matrix capable of releasing one or more volatile compounds that can form aerosols. The volatile compounds can be released by heating the aerosol forming matrix. The aerosol forming matrix can be solid or liquid, or comprise both solid and liquid components. Preferably, the aerosol forming matrix is ​​solid. The aerosol forming matrix may include nicotine. A nicotine-containing aerosol forming matrix may include a nicotine salt matrix. The aerosol forming matrix may include plant-based materials. The aerosol forming matrix may include tobacco, and preferably, the tobacco-containing material contains volatile tobacco flavor compounds that are released from the aerosol forming matrix upon heating. The aerosol forming matrix may include homogenized tobacco material. Homogenized tobacco material can be formed by condensing particulate tobacco. When present, the homogenized tobacco material may have an aerosol forming agent content equal to or greater than 5% by dry weight, and preferably greater than 30% by dry weight. The aerosol forming agent content may be less than about 95% by dry weight. Alternatively or additionally, the aerosol forming matrix may include tobacco-free materials. The aerosol-forming matrix may include homogenized plant-based materials. The aerosol-forming matrix may include one or more of the following: powders, granules, pellets, fragments, strips, bands, or sheets, wherein the strips or sheets comprise one or more of the following: herbaceous plant leaves, tobacco leaves, tobacco vein fragments, reconstituted tobacco, homogenized tobacco, extruded tobacco, and expanded tobacco. The aerosol-forming matrix may include at least one aerosol-forming agent. The aerosol-forming agent may be any suitable known compound or mixture of compounds that, in use, promotes the formation of dense and stable aerosols and has substantial resistance to thermal degradation at the operating temperature of the aerosol-generating element.Suitable aerosol forming agents are well known in the art and include, but are not limited to: polyols, such as triethylene glycol, 1,3-butanediol, and glycerol; esters of polyols, such as mono, di, or triacetic acid esters of glycerol; and fatty acid esters of mono, di, or polycarboxylic acids, such as dimethyl dodecanoate and dimethyl tetradecanoate. Particularly preferred aerosol forming agents are polyols or mixtures thereof, such as triethylene glycol, 1,3-butanediol, and most preferably glycerol. The aerosol forming matrix may include other additives and ingredients, such as fragrances. The aerosol forming matrix preferably contains nicotine and at least one aerosol forming agent. In a particularly preferred embodiment, the aerosol forming agent is glycerol.

[0040] During the heating process, the inventors surprisingly discovered that the physical state of the aerosol-forming matrix undergoes significant changes. These changes not only affect the quality of aerosol formation but also the suction resistance of the airflow channels. The aerosol-forming matrix undergoes an initial expansion followed by contraction during heating, a process that significantly impacts the suction resistance of the airflow channels. In the initial heating phase, moisture in the aerosol-forming matrix begins to evaporate, and volatile compounds in the material are released. This process causes the aerosol-forming matrix to expand in volume, reducing the cross-sectional area of ​​the airflow channels. Due to the narrowing of the airflow channels, the resistance to airflow increases, leading to a significant increase in suction resistance. This phenomenon is particularly pronounced when using plant-based materials (such as tobacco), as these materials release large amounts of volatile compounds during heating, further exacerbating the expansion. As heating time increases, the moisture in the aerosol-forming matrix gradually decreases, and volatile substances gradually evaporate during heating, causing the material to dry and shrink. This process increases the cross-sectional area of ​​the airflow channels, reducing the resistance to airflow and resulting in a significant decrease in suction resistance. To optimize the user's suction experience, the suction resistance adjustment mechanism of this invention dynamically adjusts the total suction resistance of the airflow path by adapting to the physical changes of the aerosol generating matrix. Whether using thermal response or mechanical drive, micro-adjustment or gradual adjustment, the suction resistance adjustment mechanism can achieve precise suction resistance control based on the expansion and contraction characteristics of the aerosol generating matrix, meeting the personalized suction resistance needs of different users. In particular, when using a thermal response mechanism, it cleverly utilizes the heat accumulated by the heating element during the heating process to drive the suction resistance adjustment device to first decrease and then increase the suction resistance. This design fully utilizes the heat generated during the heating process, requiring no additional energy input, achieving efficient and energy-saving suction resistance adjustment. Furthermore, this invention also provides a mechanical drive method, offering users more options. Through a combination of elastic elements and locking components, users can manually or mechanically apply external force to drive the blocking part to switch between multiple levels. This design not only provides high-precision suction resistance adjustment but also enhances the user's control over the device. Users can manually adjust the suction resistance according to their personal preferences and usage scenarios to obtain an ideal suction experience. The introduction of mechanical drive further enhances the flexibility and adaptability of the device, enabling it to meet the needs of different users.

[0041] This invention provides an aerosol generating device, which has the following advantages over the prior art:

[0042] Firstly, the aerosol generating device provided by this utility model adapts to the physical changes of the aerosol generating matrix during the heating process through an innovative thermal response mechanism, thereby achieving dynamic adjustment and compensation of the total suction resistance of the airflow path, significantly improving the user experience and making the suction process more comfortable.

[0043] Secondly, the aerosol generating device provided by this utility model can achieve micro-motion suction resistance adjustment through an innovative suction resistance adjustment mechanism, thereby enabling a wide range of suction resistance adjustment on portable smoking devices with a smaller mechanism and control stroke.

[0044] Thirdly, the aerosol generating device provided by this utility model can achieve precise fine-tuning of the suction resistance through an innovative suction resistance adjustment mechanism, thereby enabling it to be used in portable smoking devices with a smaller mechanism and a predetermined suction resistance adjustment curve. Attached Figure Description

[0045] The above-described technical content of this utility model and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solution. In the drawings, the same reference numerals represent the same or similar elements.

[0046] Figure 1 A schematic diagram of an aerosol generating device that utilizes a suction resistance adjustment mechanism;

[0047] Figure 2 A schematic diagram of an aerosol generation device that uses a thermal response mechanism to drive a suction resistance adjustment mechanism.

[0048] Figure 3 This is a schematic diagram of the first motion state in which the micro-motion suction resistance adjustment mechanism gradually reduces the suction resistance during the first period.

[0049] Figure 4 This is a schematic diagram of the second motion state in which the micro-motion suction resistance adjustment mechanism gradually reduces the suction resistance during the first period.

[0050] Figure 5 This is a schematic diagram of the third motion state in which the micro-motion suction resistance adjustment mechanism gradually reduces the suction resistance during the first period;

[0051] Figure 6 This is a schematic diagram of the motion process in which the micro-motion suction resistance adjustment mechanism gradually increases the suction resistance during the second period.

[0052] Figure 7 This is a schematic diagram of the ventilation section structure;

[0053] Figure 8 This is a schematic diagram of the shielding structure;

[0054] Figure 9 This is a schematic diagram of the positioning mechanism.

[0055] Figure 10 This is a schematic diagram of the first state structure of the first embodiment of the thermal response mechanism;

[0056] Figure 11 This is a schematic diagram of the second state structure of the first embodiment of the thermal response mechanism;

[0057] Figure 12 This is a schematic diagram of the first state structure of the second embodiment of the thermal response mechanism;

[0058] Figure 13 This is a schematic diagram of the second state structure of the second embodiment of the thermal response mechanism;

[0059] Figure 14 This is a schematic diagram of the first state structure of the third embodiment of the thermal response mechanism;

[0060] Figure 15 This is a schematic diagram of the second state structure of the third embodiment of the thermal response mechanism;

[0061] Figure 16 A schematic diagram of an aerosol generation device for application-driven components;

[0062] Figure 17 This is a schematic diagram of the first embodiment of the gradual resistance adjustment mechanism;

[0063] Figure 18 This is a schematic diagram of the shielding part in the second embodiment of the gradual suction adjustment mechanism;

[0064] Figure 19 - A schematic diagram showing the interaction between the gradual resistance adjustment mechanism and the drive assembly;

[0065] Figure 20 for Figure 19 A magnified view of a portion of the image.

[0066] The reference numerals in the attached figures are explained as follows:

[0067] Aerosol generating device: 1

[0068] Aerosol generation components: 2

[0069] Airflow channels: 3

[0070] Intake pipe: 31

[0071] Air intake: 32

[0072] Heating chamber: 33

[0073] Air outlet: 34

[0074] Suction resistance adjustment mechanism: 4

[0075] Thermal response mechanism: 5; 5'; 5”; 5”'

[0076] Push plate: 51”'

[0077] Linkage rod: 52”'

[0078] Inflatable bladder: 53”'

[0079] Limit block: 54”'

[0080] Thermal conductive components: 6

[0081] Positioning mechanism: 7

[0082] Drive mechanism: 8

[0083] Power components: 81

[0084] Executable: 82

[0085] Aerosol-generated products: 9

[0086] Ventilation section: 41; 41'; 41”

[0087] First vent: 41a”

[0088] Second vent: 41b”

[0089] Shielding part: 42; 42'; 42”

[0090] First long hole: 41a

[0091] Second long hole: 41b

[0092] First shield 42a

[0093] Second shield: 42b

[0094] Convergence aperture: 42a'; 42a”

[0095] Elastic element: 71

[0096] Card assembly: 72

[0097] Gear slots: 73

[0098] Slider: 74 Detailed Implementation

[0099] The detailed features and advantages of this utility model are described below in specific embodiments. The content is sufficient to enable any person skilled in the art to understand the technical content of this utility model and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, those skilled in the art can easily understand the related objectives and advantages of this utility model.

[0100] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0101] In the description of this embodiment, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship defined by the coordinate reference of the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0102] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0103] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0104] Aerosol generating device

[0105] See Figure 1 This is a side view of an aerosol generating device 1, which includes an aerosol generating component 2, an airflow channel 3, and a suction resistance adjustment mechanism 4. The aerosol generating component 2 works in conjunction with an aerosol generating matrix to produce aerosols. The aerosol generating matrix is ​​typically a plant-based material, such as tobacco or other nicotine-containing plant materials. The airflow channel 3 guides the flow of aerosols and / or air within the device and includes an air inlet, a heating chamber, and an air outlet. The suction resistance adjustment mechanism 4 is mounted on the airflow channel 3 and adjusts the total suction resistance of the airflow channel 3. Optionally, the aerosol generating component 2 typically includes a heating element, such as a resistance wire, heating tube, heating needle, or ceramic heating plate, and a heating chamber for containing the aerosol generating matrix. The heating element converts electrical energy into heat energy, transferring heat to the aerosol generating matrix to reach a suitable temperature for aerosol generation. The airflow channel 3 guides the flow of aerosols and / or air within the device. The design of the airflow channel 3 needs to ensure that the aerosol can flow smoothly from the generation component 2 to the user's inhalation end, while also ensuring that air can smoothly enter the device to provide sufficient air to support the aerosol generation process. The airflow channel 3 typically includes an air inlet 32, a heating chamber 33, and an air outlet 34. The air inlet 32 ​​is used to introduce air, the heating chamber 33 is where the aerosol generation matrix is ​​heated, and the air outlet 34 is the channel for the aerosol to flow to the user's inhalation end. See also... Figure 2 This is a schematic diagram of an aerosol generating device 1 in which a thermal response mechanism 5 drives a suction resistance adjustment mechanism 4. In this embodiment, the thermal response mechanism 5 is optionally provided in the device to achieve automated and dynamic response of suction resistance adjustment. By utilizing the heat generated by the heating element 2 during the heating process, the thermal response mechanism 5 can drive the suction resistance adjustment mechanism 4 to achieve automatic adjustment of the suction resistance.

[0106] It should be noted that the thermal response mechanism 5 is optionally included in the device. In some embodiments, the user may choose not to use the thermal response mechanism 5, but instead use a mechanical drive mechanism 8 or any drive mechanism 8 capable of generating displacement to drive the suction resistance adjustment mechanism 4 to achieve suction resistance adjustment. For example, see... Figure 18 This is a schematic diagram of an embodiment of the mechanical drive mechanism 8 working in conjunction with the suction resistance adjustment mechanism 4'. The mechanical drive mechanism 8 is independent of the heat changes of the heating element 2, and its power is supplied externally (such as by power supply, manual operation, etc.). The drive mechanism 8 and the thermal response mechanism 5 can share the same suction resistance adjustment mechanism interface.

[0107] During the use of the aerosol generating device 1, the physical state of the aerosol generating matrix changes significantly with the heating process. These changes are not unidirectional but exhibit complex dynamic characteristics. The inventors surprisingly discovered that in the initial heating stage, the aerosol generating matrix expands due to heat, which reduces the cross-sectional area of ​​the airflow channel 3 inside the aerosol generating product 9, leading to a significant increase in suction resistance. However, as the heating time increases, the aerosol generating matrix gradually loses moisture, and substances such as the aerosol generating agent gradually evaporate, causing the matrix to shrink. At this time, the cross-sectional area of ​​the airflow channel 3 increases, and the suction resistance decreases. This dynamic change in suction resistance significantly affects the user experience, especially during suction, where users will feel a noticeable change in resistance. To optimize the user experience and ensure that the aerosol generating device 1 provides a stable and consistent suction feel throughout the entire heating cycle, the inventors designed a suction resistance adjustment mechanism. This mechanism can adaptively compensate for suction resistance based on changes in the physical state of the aerosol generating matrix, thereby effectively balancing fluctuations in suction resistance and allowing users to enjoy a comfortable and consistent suction experience throughout the entire usage process.

[0108] The goal of suction resistance adjustment is to achieve a decrease followed by an increase in suction resistance during the aerosol generation cycle to optimize the user experience. The basic principle of adjusting suction resistance is to change the cross-sectional area of ​​the airflow channel 3 by obstructing or exposing the ventilation area of ​​the ventilation section.

[0109] Micro-motion structure adjustment of suction resistance

[0110] See Figure 3 — Figure 8The suction resistance adjustment mechanism 4 employs a micro-motion structure to achieve precise suction resistance adjustment. This mechanism 4 includes a venting section 41 and a blocking section 42. The blocking section 42 can move slightly relative to the venting section 41, thereby blocking or exposing the venting area, significantly changing the venting area, and quickly adjusting the total suction resistance of the airflow channel. This design makes the suction resistance adjustment process more precise and efficient, enabling a significant change in the cross-sectional area of ​​the airflow channel 3 in a short time. The rapid response characteristics of the micro-motion structure allow it to quickly adapt to changes in the physical state of the aerosol generating matrix during heating. When the thermal response mechanism senses a temperature change, it can easily and quickly drive the blocking section 42 to move, ensuring timely suction resistance adjustment. Furthermore, the micro-motion structure is very compact, resulting in a small overall size for the suction resistance adjustment mechanism 4, saving space, and high integration with the overall design of the aerosol generating device 1, improving the reliability and integration of the device. Furthermore, the adjustment range of the micro-motion structure can be flexibly adjusted as needed. By changing the width L of the grid, the shape of the vent, and the moving direction of the shielding part 42, a wide range of adjustments from low to high suction resistance can be achieved to meet the needs of different aerosol generation matrices and application scenarios. Due to the small displacement and compact mechanical design, the energy required by the micro-motion structure is very low, and the heat or external force required by the thermal response mechanism is limited, making the suction resistance adjustment process more energy-efficient and effective. At the same time, the high precision and compact design improves reliability and reduces the possibility of mechanical failure.

[0111] like Figure 7 As shown, the venting section 41 includes multiple vents. Preferably, the vents include at least one first elongated hole 41a and at least one second elongated hole 41b. The first elongated hole 41a has a first minimum circumscribed rectangle with an aspect ratio of at least 1.8:1, 2.4:1, 4.8:1, 5:1, 7.2:1, 9.6:1, or 12.0:1, preferably at least 5:1. This aspect ratio design ensures that the vent can achieve significant changes in ventilation area under small displacement, thereby quickly adjusting the suction resistance. The second elongated hole 41b has a second minimum circumscribed rectangle, and its aspect ratio can also be adjusted as needed to match the design of the first elongated hole 41a, achieving a synergistic suction resistance adjustment effect. Its aspect ratio is at least 1.8:1, 2.4:1, 4.8:1, 5:1, 7.2:1, 9.6:1, or 12.0:1, preferably at least 5:1. The width L of the first and second minimum bounding rectangles is between 0.2mm and 2.2mm, ensuring the compactness of the structure.

[0112] Optionally, the first minimum circumscribed rectangle and the second minimum circumscribed rectangle constitute a grid-like arrangement, an array-like arrangement, a honeycomb-like arrangement, or a spoke-like arrangement.

[0113] Preferably, the first minimum circumscribed rectangle and the second minimum circumscribed rectangle form a grid-like arrangement.

[0114] Optionally, the number of second elongated holes 41b is 3-7.

[0115] Preferably, the number of second elongated holes 41b is four.

[0116] The blocking part 42 includes a first blocking plate 42a corresponding to the first elongated hole 41a and a second blocking plate 42b corresponding to the second elongated hole 41b. The blocking part 42 can move along a length direction that is not parallel to the length direction of the first minimum circumscribed rectangle and / or the length direction of the second minimum circumscribed rectangle. The angle between its moving direction and the length direction of the vent hole can be 15-30°, 30-45°, 45-60°, 60-75°, or 75-90°. Preferably, the moving direction of the blocking part 42 is substantially perpendicular to the length direction, i.e., 90°. This design allows the blocking part 42 to effectively block or expose the vent hole with a small displacement, thereby significantly changing the ventilation area. When the blocking part 42 moves perpendicular to the length direction of the vent hole, its blocking or exposure effect on the vent hole is most significant, achieving the maximum change in ventilation area within a minimal displacement range, thus enabling rapid adjustment of the suction resistance.

[0117] Optionally, the number of second shields 42b is 2-6.

[0118] Preferably, there are three second baffles 42b.

[0119] The maximum displacement δD of the shielding part 42 is designed to satisfy 0.1L < δD < 2L. This displacement range design ensures the accuracy and rapid response of the suction resistance adjustment, while avoiding structural instability that may be caused by excessive displacement.

[0120] Preferably, both the ventilation section 41 and the shielding section 42 are grid structures, and the two have similar patterns.

[0121] Gradual draw resistance adjustment mechanism:

[0122] See Figures 16-20 In other embodiments, the suction resistance adjustment mechanism in the aerosol generating device 1 of this invention adopts a gradual structural design to achieve smooth adjustment of the suction resistance. This gradual structural design is based on the synergistic effect of the ventilation section 41' and the blocking section 42'. Through the relative movement of the blocking section 42' and the ventilation section 41', the cross-sectional area of ​​the airflow channel is gradually adjusted, thereby optimizing the suction experience.

[0123] The gradient structure includes at least one converging hole 42a', which can be disposed on the blocking part 42' and / or the venting part 41'. These converging holes 42a' are designed along the path of relative movement of the blocking part 42' and the venting part 41', and their width gradually decreases along the moving direction of the blocking part 42'. This design allows the blocking part 42' to gradually change the effective cross-sectional area of ​​the venting part during movement, thereby achieving gradual adjustment of the suction resistance.

[0124] See Figures 16-17 The converging orifice 42a' can be formed in the blocking part 42', which is generally flat, while the venting part 41' is directly formed by the air inlet of the aerosol generating device 1. Optionally, the converging orifice 42' can be designed as a trapezoidal or triangular orifice, with its width gradually decreasing from one end to the other. This structural design allows the effective air intake area of ​​the venting part 41' to gradually change during the movement of the blocking part 42'. See also Figure 17 Taking the triangular converging orifice 42a' as an example, the upper opening is wide and the lower opening is narrow. When the blocking part 42' moves towards the upper end of the converging orifice 42a', the effective cross-sectional area of ​​the vent gradually decreases, and the suction resistance gradually increases; conversely, when the blocking part 42' moves towards the lower end of the converging orifice 42a', the effective cross-sectional area of ​​the vent gradually increases, and the suction resistance gradually decreases. This gradual design not only enables smooth adjustment of the suction resistance but also adapts to and optimizes the suction resistance based on the physical state changes of the aerosol generating matrix during the heating process. The design of the gradual suction resistance adjustment mechanism 4' not only considers smooth adjustment of the suction resistance but also takes into account the compactness and reliability of the structure. Through the interaction of the shapes of the vent 41' and the blocking part 42', this mechanism can achieve efficient suction resistance adjustment within a limited space while maintaining high precision and reliability. Furthermore, the adjustment range of the gradual suction resistance adjustment mechanism 4' can be flexibly adjusted as needed to meet the requirements of different aerosol generating matrices and application scenarios.

[0125] Specifically, see Figure 18 The converging hole 42a” can also be designed as a trapezoidal hole, with the ratio of its long side to its short side being at least 4.8:1, 5:1, 7.2:1, 9.6:1 or 12.0:1, preferably 5:1. This design not only enables smooth changes in suction resistance, but also allows for a large range of suction resistance adjustment within a limited space.

[0126] See Figure 19 , 20In another embodiment, the ventilation section 41” has a structure where the aerosol generating device 1 uses a “staggered air intake + thickness-controlled air resistance” configuration and employs two-dimensional suction resistance adjustment. In this embodiment, the ventilation area of ​​the ventilation section 41” consists of a first ventilation hole 41a” and a second ventilation hole 41b” located at the upper and lower ends of the converging hole 42a’. The projections of the first ventilation hole 41a” and the second ventilation hole 41b” in the axial direction of the airflow channel are completely offset from the airflow channel 3. Therefore, outside air cannot directly and vertically penetrate the converging hole 42a’, but is forced to change direction, forming a structure like… Figures 19-20 As shown in the airflow path, air flows axially into the airflow channel 3 from the first vent 41a” and the second vent 41b”, respectively. Then, at least a portion of the air converges towards the center along the length of the converging hole 42a’, and then flows along the airflow channel 3 again. This three-segment path of “axial first, then lateral, then axial again” significantly increases local resistance. Moreover, in addition to being constrained by the width of the converging hole 42a’, the airflow is also affected by the thickness T of the shielding part 42’, adding a dimension of suction resistance and airflow channel control. Specifically, 0.5mm≤T≤1.0mm, when T decreases, the airflow path in the thickness direction of the trapezoidal hole shortens, local suction resistance decreases, and overall suction resistance decreases simultaneously; when T increases, the airflow path in the thickness direction of the trapezoidal hole lengthens, local suction resistance increases, and thus overall suction resistance increases. The shielding part 42’ can be a sheet of different thicknesses and can be installed in the aerosol generating device 1 using any common method such as magnetic attraction or clamping.

[0127] Optionally, the airflow path can be restricted by adding an air intake pipe 31. Preferably, the air intake pipe 31 is integrally molded from an elastic material (e.g., silicone, EPDM, or TPU), and the inner wall of the air intake pipe 31 forms an airflow channel. It is easy to understand that because the air intake pipe 31 is made of an elastic material, the end face of the air intake pipe 31 that contacts the shield 42' can achieve a tight fit, which can prevent air leakage, achieve more precise airflow drive, and allow the air to flow in a preset direction, thereby improving the suction resistance control accuracy.

[0128] Thermal response mechanism

[0129] In the aerosol generating device 1 of this invention, the thermal response mechanism senses the temperature change of the aerosol generating component 2 and drives the shielding part or moving grid to shift, thereby achieving automatic adjustment of the suction resistance. To meet different design requirements and application scenarios, the thermal response mechanism can be implemented in various ways.

[0130] See Figure 2This is a schematic diagram of an aerosol generating device 1 that uses a thermal response mechanism 5 to drive a suction resistance adjustment mechanism. In this embodiment, the thermal response mechanism 5 is optionally provided in the device to achieve automated and dynamic response of suction resistance adjustment. By utilizing the heat generated by the heating element 2 during the heating process, the thermal response mechanism 5 can drive the suction resistance adjustment mechanism 4 to achieve automatic adjustment of the suction resistance.

[0131] It should be noted that the thermal response mechanism 5 is optionally included in the device. In some embodiments, the user may choose not to use the thermal response mechanism, but instead use a mechanical drive mechanism or any drive mechanism capable of generating displacement to drive the suction resistance adjustment mechanism to achieve suction resistance adjustment.

[0132] Alternatively, the thermal response mechanism can take many forms: for example, see Figure 11 , 12 The thermal response mechanism 5' can be a bimetallic strip structure. A bimetallic strip is a composite material made of two metals or metal alloys with different coefficients of thermal expansion, firmly bonded at the contact surface. The layer with the larger coefficient of expansion is the active layer, and the layer with the smaller coefficient of expansion is the passive layer. The active layer is mainly made of manganese-nickel-copper alloy, nickel-chromium-iron alloy, nickel-manganese-iron alloy, and nickel, etc.; the passive layer is mainly made of nickel-iron alloy. When the bimetallic strip is heated, due to the difference in thermal expansion coefficients, it bends and deforms towards the passive layer with the smaller coefficient of expansion, thus pulling the moving grid. When the temperature decreases, the bimetallic strip returns to its original shape, and the grid resets.

[0133] See Figure 13 , 14 This is another implementation of the thermal response mechanism 5, which involves rolling the heat-deformable material in multiple layers. By increasing the number of turns, the amount of heat deformation displacement within a limited space can be effectively amplified. That is, a smaller temperature change can achieve a larger displacement. The advantage of this is that the larger the displacement, the larger the slot width L1 of the grille can be, for example, ≥1mm. The difficulty of grille processing is reduced, and it is also beneficial to assemble the moving grille and the air intake grille.

[0134] See Figure 14 , 15This is another implementation of the thermal response mechanism 5”', which adopts an expandable bladder structure. The expandable bladder 53”' is placed in the limiting block 54”'. The expandable bladder 53”' can be of various types, such as an air rubber bladder, with the volume expansion coefficient of air being 3.4×10-3 / ℃ and the linear expansion coefficient being 1.13×10-3 / ℃; or a rubber bladder containing liquid ethanol, which can undergo phase change expansion above 78.3℃ to meet the sufficient displacement required to drive the grid movement. The expandable bladder 53”', filled and sealed with gas or liquid, is placed inside the limiting block 54”', with both ends fixed to the inner wall of the limiting block and the push plate 51”', respectively. The push plate 51”' is connected to the suction resistance adjustment mechanism via the linkage rod 52”'. When the heat from the heating element is transferred to the expandable bladder, the gas or liquid inside expands due to heat. Under the restriction of the limiting block 54”', it can only deform to one side, pushing the push plate 51”' and driving the suction resistance adjustment mechanism to move. When the temperature recovers, the inflatable bladder contracts, and the suction resistance adjustment mechanism resets.

[0135] One approach to implementing a thermally responsive mechanism is to use heat-deformable materials, particularly nickel-titanium shape memory alloys (NiTi-SMA). This material is chosen for its unique shape memory effect and superelasticity. NiTi-SMA can undergo significant shape changes within a specific temperature range, exhibiting a high coefficient of linear expansion, typically between 1.5 × 10⁻³ / ℃ and 2.0 × 10⁻³ / ℃. This characteristic allows NiTi-SMA to generate sufficient displacement upon temperature changes, effectively driving the movement of the blocking part and adjusting the suction resistance. Another thermally responsive mechanism is an air-rubber bladder, which utilizes the thermal expansion properties of air to achieve displacement. Air has a volumetric expansion coefficient of 3.4 × 10⁻³ / ℃ and a linear expansion coefficient of 1.13 × 10⁻³ / ℃. These high expansion coefficients allow the air-rubber bladder to undergo significant volume changes upon temperature variations, thereby pushing the blocking part or moving grid to adjust the suction resistance. Furthermore, a rubber bladder encasing liquid ethanol can also be used as a thermally responsive mechanism. Ethanol undergoes a phase change above 78.3℃, transforming from a liquid to a gaseous state, resulting in significant volume expansion. This phase change expansion can be used to move the shielding part or the moving grille, thereby adjusting the suction resistance. This design is particularly suitable for applications requiring rapid response at specific temperatures. Secondly, bimetallic strips are also a common thermally responsive material, composed of two metals with different coefficients of thermal expansion. In this invention, the bimetallic strip is used as part of the thermal response mechanism, capable of bending and deforming upon temperature changes, thereby moving the shielding part or the moving grille. Bimetallic strips are widely used due to their simple structure, low cost, and high reliability.

[0136] Optionally, a heat-conducting element 6 is also provided directly between the thermal response mechanism 5”' and the aerosol generating element. The heat-conducting element 6 effectively transfers the heat generated by the aerosol generating component 2 to the thermal response mechanism 5”', ensuring that the thermal response material (such as heat-deformable material, bimetallic strip, etc.) can quickly sense temperature changes and respond, thereby driving the shielding part to move and realizing the adjustment of the suction resistance.

[0137] Optionally, an ideal thermally conductive material should possess high thermal conductivity, good thermal stability, and mechanical stability. Commonly used thermally conductive materials include one or a combination of several of the following: metallic materials, alloy materials, ceramic materials, and polymer materials.

[0138] Optionally, the thermal response mechanism can be used in conjunction with any type of suction resistance adjustment mechanism, such as a micro-motion suction resistance adjustment mechanism or a gradual suction resistance adjustment mechanism, to achieve suction resistance adjustment.

[0139] Positioning mechanism:

[0140] See Figure 9 The diagram illustrates a positioning mechanism 7 working in conjunction with a suction resistance adjustment mechanism. One implementation of the positioning mechanism 7 utilizes a combination of an elastic element 71 and a locking member 72. One end of the elastic element 71 is connected to the blocking part, and the other end engages with the locking member 72. The locking member 72 has multiple positions, allowing the elastic element 71 to switch the blocking part between these positions under external force. This design allows the user to apply external force manually or mechanically; when the applied force is removed, the suction resistance adjustment mechanism is positioned at the corresponding position, thus achieving precise movement of the blocking part.

[0141] Specifically, the elastic element 71 can be a spring or other material with elastic properties. Its function is to generate displacement under the action of external force and return to its original position after the external force is released. The design of the elastic element 71 can be adjusted according to the required amount of displacement and the magnitude of the force to ensure that it provides appropriate resistance and restoring force under various operating conditions.

[0142] The locking element 72 has multiple positions, each corresponding to a specific resistance value. The position design of the locking element 72 can be linear or non-linear, depending on the resistance adjustment requirements. The material selection for the locking element 72 should ensure its wear resistance and reliability to withstand frequent operation and long-term use.

[0143] Optionally, the end of the elastic element 71 away from the blocking part includes a slider 74, which fits into the shape of the stop groove 73 of the engaging member 72. This design ensures that the slider 74 can be accurately engaged in the stop groove 73, thereby fixing the position of the blocking part and achieving stable suction adjustment.

[0144] In some embodiments, the engaging member 72 employs a parallel design, clamping the elastic element 71. When the user pushes the blocking part laterally, the elastic element 71 contracts, and the slider 74 moves accordingly and engages in the next positioning slot 73. Once the slider 74 enters the new positioning slot 73, the elastic element 71 automatically returns to its original shape without external force, thus fixing the slider 74 in the new position. This design not only achieves precise movement of the blocking part but also ensures ease of operation and reliability through the automatic reset function of the elastic element 71. Users can easily adjust the suction resistance manually according to personal preferences and usage scenarios to obtain an ideal suction experience.

[0145] Optionally, the positioning mechanism 7 can cooperate with any form of suction resistance adjustment mechanism, such as a micro-motion suction resistance adjustment mechanism or a gradual suction resistance adjustment mechanism, to achieve the positioning of the suction resistance adjustment mechanism and thus achieve more precise suction resistance adjustment.

[0146] Drive mechanism

[0147] In the aerosol generating device 1 of this utility model, in addition to the thermal response mechanism, a mechanical drive can also be used to achieve suction resistance adjustment. The mechanical drive mechanism 8 controls the movement of the blocking part or the moving grid through external mechanical force or user operation, thereby achieving suction resistance adjustment.

[0148] See Figures 16-18 The gradual suction resistance adjustment mechanism is connected to the power component 81 (such as a motor) by an actuator 82 (such as a screw). Through a worm gear mechanism, the rotational motion of the motor is converted into the linear motion of the blocking component. The reciprocating motion of the motor drives the blocking component to slide up or down along the trapezoidal grille, thereby changing the size of the air intake area.

[0149] In other embodiments, the mechanical drive can cooperate with other components of the aerosol generating device 1 (such as sensors or controllers) to achieve automatic suction resistance adjustment. For example, when the sensor detects a temperature change in the aerosol generating matrix or a change in the user's suction frequency, the controller can drive the blocking part to achieve automatic adjustment of the suction resistance. This automatic adjustment method further enhances the user experience, enabling the device to automatically optimize the suction resistance according to different usage conditions and ensure stable suction performance. It should be noted that the use of sensors in conjunction with automatic controllers to achieve mechanical force output is common knowledge in the art, and therefore will not be elaborated upon here.

[0150] Optionally, the drive mechanism 8 can be used in conjunction with any type of suction resistance adjustment mechanism, such as a micro-motion suction resistance adjustment mechanism or a gradual suction resistance adjustment mechanism, to achieve suction resistance adjustment.

[0151] The drive mechanism 8 relies on external power and is independent of whether the aerosol generation component 2 is heated or generates a temperature gradient. Therefore, it can be independently applied to any aerosol device that requires adjustable suction resistance.

[0152] Resistance adjustment process:

[0153] The basic principle of suction resistance adjustment is to control the airflow resistance by changing the cross-sectional area of ​​the airflow channel. The larger the cross-sectional area of ​​the airflow channel, the smaller the airflow resistance; conversely, the smaller the cross-sectional area, the greater the airflow resistance. Taking a heated non-combustible aerosol generator 1 as an example, the aerosol generating matrix expands and contracts during heating, causing changes in the cross-sectional area of ​​the airflow channel, thus affecting the suction resistance. To optimize the suction experience, the suction resistance adjustment mechanism needs to be able to dynamically adjust the cross-sectional area of ​​the airflow channel to compensate for changes in the physical state of the aerosol generating matrix. During the operation of aerosol generator 1, taking the micro-motion suction resistance adjustment mechanism in conjunction with the thermal response mechanism as an example, the overall operation process of the suction resistance adjustment mechanism is as follows:

[0154] First period: See Figures 3 to 5 , Figure 3 In the initial engagement state of the grid structure's shielding and ventilation sections, the first and second shielding plates of the shielding section cover most of the area of ​​the corresponding first and second elongated holes 41a and 41a. When the aerosol generating component 2 begins to heat up, the aerosol generating matrix expands due to heat, causing the cross-sectional area of ​​the airflow channel to decrease and the suction resistance to increase. At this time, the thermal response mechanism (such as a heat-deformable material or a bimetallic strip) senses the temperature change, undergoes a shape change, and drives the shielding section to move. The shielding section gradually translates relative to the ventilation section. See [link to relevant documentation]. Figures 4 to 5 Finally, the first long hole 41a and the second long hole are fully exposed, significantly changing the ventilation area and thus rapidly reducing the suction resistance.

[0155] In addition to a thermal response mechanism, a mechanical drive can also be used. Users can manually operate or apply external force through a mechanical device to drive the blocking part to switch between multiple positions of the engaging component, achieving fine adjustment of the suction resistance. As the heating time increases, the aerosol generating matrix gradually dries and shrinks, increasing the cross-sectional area of ​​the airflow channel and reducing the suction resistance. At this time, the thermal response mechanism continues to sense temperature changes and further drives the blocking part to move, gradually exposing the vent, achieving smooth adjustment of the suction resistance.

[0156] Second period: As heating time increases, the aerosol-generating matrix gradually dries and shrinks, increasing the cross-sectional area of ​​the airflow channel and decreasing the suction resistance. At this time, the thermal response mechanism continues to sense temperature changes and continues to drive the blocking part to move in the same direction, gradually blocking the first elongated orifice 41a and the second elongated orifice, achieving smooth adjustment of the suction resistance (see reference). Figure 6 ).

[0157] Through the above operation process, the suction resistance adjustment mechanism can dynamically adjust the cross-sectional area of ​​the airflow channel throughout the entire heating cycle of the aerosol generating device 1, optimizing the user's suction experience. Whether thermally driven or mechanically driven, and whether micro-adjustment or gradual adjustment is used, the suction resistance adjustment mechanism can achieve precise suction resistance control according to the changes in the physical state of the aerosol generating matrix, meeting the needs of different users and application scenarios.

[0158] Optionally, the suction resistance adjustment mechanism of this utility model is not only applicable to the heated non-combustible aerosol generator 1, but can also be adapted to any type of aerosol generator 1. Its design has high versatility and flexibility, and can be adapted to different scenarios.

[0159] Industrial application

[0160] In summary, the beneficial effects of the aerosol generating device of this utility model, through its innovative draw resistance adjustment mechanism, are as follows: Firstly, the aerosol generating device provided by this utility model, through its innovative thermal response mechanism, adapts to the physical changes of the aerosol generating matrix during the heating process, achieving dynamic adjustment and compensation of the total draw resistance of the airflow path, significantly improving the user experience and making the vaping process more comfortable. Secondly, another aerosol generating device provided by this utility model, through its innovative draw resistance adjustment mechanism, can achieve micro-motion draw resistance adjustment, thereby enabling a wide range of draw resistance adjustment on portable smoking devices with a smaller mechanism and control stroke. Thirdly, another aerosol generating device provided by this utility model, through its innovative draw resistance adjustment mechanism, can achieve precise draw resistance fine-tuning, thereby enabling a smaller mechanism and a predetermined draw resistance adjustment curve on portable smoking devices.

[0161] The terminology and expressions used herein are for descriptive purposes only, and this invention should not be limited to these terms and expressions. The use of these terms and expressions does not mean the exclusion of any illustrative and descriptive equivalent features (or parts thereof), and it should be recognized that various modifications that may exist should also be included within the scope of the claims. Other modifications, variations, and substitutions may also exist. Accordingly, the claims should be considered to cover all such equivalents.

[0162] Similarly, it should be noted that although the present invention has been described with reference to the specific embodiments described above, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and various equivalent changes or substitutions can be made without departing from the spirit of the present invention. Therefore, any changes or modifications to the above embodiments within the scope of the essential spirit of the present invention will fall within the scope of the claims of the present invention.

Claims

1. An aerosol generating apparatus, comprising an aerosol generating component for generating aerosols, and an airflow channel for guiding the aerosols and / or air to flow in an airflow path, wherein the aerosol generating component is used to heat an aerosol generating matrix in an aerosol generating article to generate aerosols, characterized in that, A suction resistance adjustment mechanism is provided on the airflow path, which is used to adjust the total suction resistance of the airflow channel.

2. The aerosol-generating device of claim 1, wherein, The suction resistance adjustment mechanism includes a venting section and a blocking section. The venting section has a venting area, and the blocking section moves relative to the venting section to block at least a portion of the venting area.

3. The aerosol-generating device of claim 2, wherein, The ventilation section includes a first elongated hole and a second elongated hole, the first elongated hole having a first minimum bounding rectangle and the second elongated hole having a second minimum bounding rectangle; the blocking section is movable along a length direction that is not parallel to the length direction of the first minimum bounding rectangle and / or the length direction of the second minimum bounding rectangle; the blocking section includes a first shield corresponding to the first elongated hole and a second shield corresponding to the second elongated hole.

4. The aerosol-generating device of claim 3, wherein, The angle between the moving direction of the blocking part and the length direction of the first minimum circumscribed rectangle and / or the length of the second minimum circumscribed rectangle is 15-30°, 30-45°, 45-60°, 60-75° or 75-90°.

5. The aerosol generating apparatus according to claim 4, characterized in that, The first minimum bounding rectangle and the second minimum bounding rectangle constitute a grid-like arrangement, an array-like arrangement, a honeycomb-like arrangement, or a spoke-like arrangement.

6. The aerosol-generating device of claim 3, wherein, The width L of each of the first minimum bounding rectangle and / or the second minimum bounding rectangle satisfies: 0.2mm≤L≤2.2mm; and / or the maximum displacement δD of the occluding portion satisfies: 0.1L<δD<2L.

7. The aerosol-generating device of claim 2, wherein, The ventilation section and / or the blocking section includes at least one converging hole. When the blocking section moves relative to the ventilation section, the converging hole gradually shrinks along the direction of relative movement, and the effective ventilation area of ​​the ventilation section changes continuously.

8. The aerosol-generating device of claim 7, wherein, The converging hole is constructed as a trapezoidal hole, and the ratio of the long side to the short side of the trapezoidal hole is at least 4.8:1, 5.0:1, 7.2:1, 9.6:1 or 12.0:

1.

9. The aerosol-generating device of claim 7, wherein, The shielding portion includes the converging hole, and the ventilation area of ​​the ventilation portion is disposed at the end of the shielding portion. The projection of the ventilation area along the axial direction of the airflow channel is completely offset from the airflow channel, so that when the airflow passes through the converging hole, at least a portion flows along the converging hole in a gradually narrowing and / or gradually expanding direction.

10. The aerosol-generating device of claim 9, wherein, The thickness T of the shielding portion satisfies: 0.5mm≤T≤1mm. 11.The aerosol-generating device of claim 2, wherein, The aerosol generating device also includes a positioning mechanism, and the blocking part can reciprocate along the positioning mechanism when subjected to an external force; when the external force stops, the positioning part constrains the blocking part to a predetermined position to maintain the current ventilation area. 12.The aerosol-generating device of claim 11, wherein, The positioning mechanism includes an elastic element and a locking member. One end of the elastic element is connected to the blocking part, and the other end cooperates with the locking member. The locking member has multiple positions along the moving direction of the blocking part. The elastic element can deform when the blocking part moves and guide the blocking part to switch between the multiple positions.

13. The aerosol-generating device of claim 12, wherein, The engaging component includes multiple gear slots, and the end of the elastic element away from the blocking part is provided with a slider that can adapt to the contour of the gear slot.

14. The aerosol-generating device of any of claims 2-13, wherein, The suction resistance adjustment mechanism is configured to have a first period and a second period within an aerosol generation cycle, wherein the total suction resistance is in a decreasing phase during the first period and in an increasing phase during the second period.

15. The aerosol-generating device of claim 14, wherein, The aerosol generating matrix is ​​a plant-based material that expands when heated during the first period and shrinks when dried during the second period.

16. The aerosol-generating device of claim 14, wherein, The suction resistance adjustment mechanism also includes a thermal response mechanism, which drives the blocking part to move relative to the ventilation part to block at least a portion of the ventilation area when it senses a temperature change in the aerosol generating component.

17. The aerosol-generating device of claim 16, wherein, The thermal response mechanism is made of a thermal deformation material. 18.The aerosol-generating device of claim 16, wherein, The thermal response mechanism and the aerosol generating component also contain a thermally conductive material.

19. The aerosol-generating device of claim 17, wherein, The thermodeformable material includes an expandable bladder or a bimetallic sheet, wherein the expandable bladder is made of rubber and contains air or liquid ethanol.

20. The aerosol-generating device of any of claims 2-13, wherein, The suction resistance adjustment mechanism is a micro-motion suction resistance adjustment mechanism or a gradual suction resistance adjustment mechanism.

21. The aerosol-generating device of any of claims 2-13, wherein, The suction resistance adjustment mechanism further includes a drive mechanism, which can drive the blocking part to move relative to the ventilation part to block at least a portion of the ventilation area.

22. The aerosol-generating device of claim 21, wherein, The drive mechanism includes a power component and an actuator, wherein the power component provides power to the actuator, and the actuator is rigidly connected to the shielding portion.

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