Aerosol generating system and aerosol generating product

Abstract

The invention discloses an aerosol generating system and an aerosol generating device.The aerosol generating system comprises the aerosol generating product and an aerosol generating device, and the aerosol generating product is in a long strip shape and comprises a tobacco section filled with an aerosol generating matrix in the longitudinal length direction of the tobacco section, a hollow area extending in the length direction of the tobacco section is arranged in the aerosol generating substrate; the cooling section is connected with the tobacco section; the filtering section is connected with the cooling section, and aerosol generated by the aerosol generating substrate is suitable for flowing to the cooling section and the filtering section from the hollow area; the aerosol generating device comprises: a chamber for accommodating an aerosol generating product; and the laser heating assembly comprises a laser emitter, and the laser emitter is used for emitting laser to the aerosol generating product so as to radiate energy to the aerosol generating product, so that the aerosol generating substrate generates aerosol. In this way, the heating efficiency of the aerosol generating system can be improved.

Description

[Technical Field]

[0001] This application relates to the field of aerosol generation technology, and in particular to an aerosol generation system and an aerosol generation product. [Background Technology]

[0002] Traditional tobacco products (such as cigarettes and cigars) produce tobacco smoke by burning tobacco during use. Existing technologies offer alternatives to these traditional tobacco products by releasing compounds through heating without combustion. Examples of such products include aerosol generating devices, which typically include a heating element and a battery. The battery provides power to the heating element, which then heats the aerosol-generating product within the device, causing at least a portion of its active substances to evaporate or volatilize, producing an inhalable aerosol.

[0003] Existing heating elements have low heating efficiency, which affects the inhalation taste and experience of aerosols. [Summary of the Invention]

[0004] This application provides an aerosol generation system to improve the heating efficiency of an aerosol generation device for generating aerosols from aerosol-generating articles.

[0005] At least one embodiment of this application provides an aerosol generation system, including an aerosol generation article and an aerosol generation apparatus for heating the aerosol generation article to generate aerosols, wherein the aerosol generation article is elongated and comprises, in its longitudinal length direction:

[0006] A tobacco segment, wherein the tobacco segment is filled with an aerosol generating matrix, and the aerosol generating matrix has a hollow region extending along the length direction of the tobacco segment;

[0007] Cooling section, the cooling section being connected to the tobacco section; and

[0008] A filtration section is connected to the cooling section, and the aerosol generated by the aerosol generating matrix is ​​adapted to flow from the hollow region to the cooling section and the filtration section.

[0009] The aerosol generating device includes:

[0010] A chamber for containing the aerosol-generated product;

[0011] At least one laser heating component, the laser heating component including a laser emitter for emitting a laser beam toward the aerosol generating article to radiate energy toward the aerosol generating article, thereby causing the aerosol generating matrix to generate aerosols.

[0012] In one embodiment, the aerosol generating apparatus further includes a driving mechanism for driving the laser heating assembly to move circumferentially and / or along the length of the cavity.

[0013] In one embodiment, the aerosol generating device further includes a support, and there are multiple laser heating components mounted on the support. The support and the driving mechanism are connected in a transmission manner.

[0014] In one embodiment, a plurality of the laser heating components are arranged circumferentially spaced along the cavity and located in the same plane, and the driving mechanism is used to drive the support to move along the length of the cavity.

[0015] In one embodiment, the drive mechanism is configured to drive the corresponding laser heating assembly to move along the circumference of the cavity or the length of the cavity when configured.

[0016] In one embodiment, the laser heating assembly includes multiple laser heating assemblies that are arranged together to form a hollow cylindrical body, and the aerosol-generating product can be contained within the cylindrical body.

[0017] In one embodiment, the laser is infrared and has a wavelength of 800nm ​​to 1000nm, or the laser has a wavelength of 808nm to 980nm.

[0018] In one embodiment, the laser heating assembly includes an optical path shaping mechanism for adjusting the shape of the laser spot output to the aerosol-generating article.

[0019] In one embodiment, the optical path shaping mechanism includes at least one collimator for collimating the emitted laser and at least one homogenizer for homogenizing the laser after collimation.

[0020] In one embodiment, the hollow region is located in the central region of the tobacco segment.

[0021] In one embodiment, the laser heating assembly further includes a heat dissipation mechanism for dissipating heat from the laser emitter.

[0022] In one embodiment, the heat dissipation mechanism includes a heat dissipation plate and a plurality of heat dissipation fins disposed on one side of the heat dissipation plate, the laser emitter is attached to the other side of the heat dissipation plate, and the plurality of heat dissipation fins are arranged in an array.

[0023] In one embodiment, the aerosol generating apparatus further includes a controller and a battery cell, the controller being used to control the battery cell to provide a constant current to the laser emitter.

[0024] In one embodiment, the laser emitter includes a semiconductor laser chip.

[0025] At least one embodiment of this application also provides an aerosol generating article, which is elongated and comprises, in its longitudinal length direction:

[0026] A tobacco segment, wherein the tobacco segment is filled with an aerosol generating matrix, and the aerosol generating matrix has a hollow region extending along the length direction of the tobacco segment;

[0027] Cooling section, the cooling section being connected to the tobacco section; and

[0028] A filtration section is connected to the cooling section, and the aerosol generated by the aerosol generating matrix is ​​adapted to flow from the hollow region to the cooling section and the filtration section.

[0029] In one embodiment, it further includes:

[0030] A sealing element is disposed at one end of the tobacco section away from the cooling section, and is used to seal the aerosol generation matrix.

[0031] In one embodiment, the tobacco segment is provided with a plurality of air holes that extend in the radial direction of the tobacco segment and each air hole communicates with the hollow region.

[0032] The aerosol generation system provided in the above embodiments includes an aerosol generation product and an aerosol generation device for heating the aerosol generation product. The aerosol generation device is equipped with a laser heating component, thereby enabling the aerosol generation device to heat the aerosol generation product via laser heating, thus improving the heating efficiency of the aerosol generation device. Furthermore, the aerosol generation matrix filled in the tobacco segment of the aerosol generation product has a hollow region extending in the longitudinal direction, resulting in a thinner aerosol generation matrix, further improving the heating efficiency of laser heating, and consequently enhancing the user's vaping taste and experience. [Attached Image Description]

[0033] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0034] Figure 1This is a schematic diagram of the structure of an aerosol generation system provided in an embodiment of this application;

[0035] Figure 2 for Figure 1 A schematic diagram of the structure of products generated from aerosols;

[0036] Figure 3 This is a schematic diagram of the structure of an aerosol-generated article provided in another embodiment of this application;

[0037] Figure 4 A schematic diagram of the structure of an aerosol-generated article provided in yet another embodiment of this application;

[0038] Figure 5 for Figure 1 A schematic diagram of the laser heating component in the aerosol generation device;

[0039] Figure 6 This is a schematic diagram of the structure of an aerosol generating apparatus provided in another embodiment of this application;

[0040] Figure 7 A schematic diagram of the structure of an aerosol generating apparatus provided in yet another embodiment of this application;

[0041] Figure 8 A schematic diagram of a structure in which multiple laser heating components are arranged along the circumferential direction of the cavity;

[0042] Figure 9 A schematic diagram of the structure of an aerosol generating apparatus provided in yet another embodiment of this application;

[0043] Figure 10 This is a schematic diagram of the structure of an aerosol generating device provided in another embodiment of this application.

Detailed Implementation Methods

[0044] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" or "attached to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0045] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0046] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0047] In the embodiments of this application, "installation" includes fixing or restricting a component or device to a specific position or place by means of welding, screwing, snapping, bonding, etc. The component or device may remain stationary in the specific position or place or may move within a limited range. After the component or device is fixed or restricted to the specific position or place, it may or may not be disassembled. This application does not impose any restrictions.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] One embodiment of this application provides an aerosol generation system, such as... Figure 1 As shown, the aerosol generation system includes an aerosol generation device 100 and an aerosol generation product 200. The aerosol generation device 100 includes a battery cell 10, a main board 20, and at least one laser heating component 30. The main board 20 is equipped with a controller for the aerosol generation device 100. The battery cell 10 and the laser heating component 30 are electrically connected to the controller, so that the controller can control the battery cell 10 to provide electrical energy to the laser heating component 30. The aerosol generation device 100 also has a longitudinally extending chamber 40 for containing the aerosol generation product 200. When the aerosol generation product 200 is contained in the chamber 40, the laser heating component 30 heats the aerosol generation product 200 in the chamber 40, and at least part of the aerosol generation matrix filling the aerosol generation product 200 volatilizes to generate aerosols.

[0050] The aerosol generating device 100 also includes an air passage 50 that connects the chamber 40 and the outside air. When the user inhales on the aerosol generating product 200, the outside air enters the chamber 40 through the air passage 50 and further enters the aerosol generating product 200. Then, it carries the aerosol in the aerosol generating product 200 and escapes along the airflow passage in the aerosol generating product 200 so that the user can inhale it.

[0051] The aerosol-generating matrix is ​​preferably a tobacco-containing material that releases volatile compounds from the article upon heating; alternatively, it may be a non-tobacco material suitable for electric heating and smoke generation after heating. The aerosol-generating article matrix is ​​preferably a solid matrix, which may include one or more of the following: vanilla leaves, tobacco leaves, homogenized tobacco, expanded tobacco, in powder, granules, fragments, strips, or sheets; or, the solid matrix may contain additional tobacco or non-tobacco volatile aroma compounds to be released when the matrix is ​​heated.

[0052] The laser heating component 30 is used to emit a laser to the aerosol generating product 200, and then radiate energy to the aerosol generating product 200 under the action of the laser to heat the aerosol generating product 200 to generate aerosol. Since the laser has high brightness, high energy density per unit area, and fast heating rate of the medium, it can heat the aerosol generating product 200 to the target temperature in a very short time, and quickly stimulate the aerosol generating product 200 to generate a large amount of aerosol. Therefore, the laser heating method has high heating efficiency, good taste consistency, and high product utilization. It can not only meet the requirements of good smoking taste, but also realize the smoking experience of smoking and stopping immediately.

[0053] like Figure 2 As shown, the aerosol generating product 200 is generally elongated in shape and includes a tobacco section 211, a cooling section 211, and a filter section 213 along its longitudinal length. The aerosol generating matrix 300 is filled in the tobacco section 211. The cooling section 211 is hollow and has multiple vents (not shown) on its outer surface for external air to enter. The filter section 213 is filled with filter material and is inhaled by the user. When the user inhales in the filter section 213, the aerosol generated in the tobacco section 211 flows into the cooling section 211. At this time, the high-temperature aerosol and the external cold air mix in the cooling section 211, thereby reducing the temperature of the aerosol. The cooled aerosol then flows into the filter section 213, where the filter material filters the aerosol, removing some unwanted particulate matter. Finally, the filtered aerosol escapes from the filter section 213 for the user to inhale.

[0054] Furthermore, when the aerosol generating matrix 300 is filled in the tobacco segment 211, the aerosol generating matrix 300 maintains a hollow region 2111 extending along the length direction of the tobacco segment 211. In other words, the aerosol generating matrix 300 does not completely fill the tobacco segment 211. By setting the hollow region 211, the aerosol generating matrix 300 filled in the tobacco segment 211 can have a thinner thickness, so that it can be better excited to generate aerosols under the irradiation of the laser beam emitted by the laser heating component 30.

[0055] In some embodiments, such as Figure 3 As shown, the aerosol generating article 200 also includes a sealing portion 214 disposed on the tobacco section 211 and facing away from the cooling section 212. The sealing portion 214 is used to seal the aerosol generating matrix 300 filling the tobacco section 211, preventing the aerosol generating matrix 300 from falling out of the tobacco section 211. Furthermore, the sealing portion 214 has multiple vent holes 216 for external air to enter the tobacco section 211. Alternatively, in some embodiments, the sealing portion 214 is made of a breathable material, allowing external air to enter the tobacco section 211 through the tiny gaps within the sealing portion 214 itself.

[0056] In some embodiments, such as Figure 4 As shown, the tobacco segment 211 also includes a plurality of vents 215 extending radially along the tobacco segment 211. One end of each vent 215 is connected to the outside air, and the other end is connected to the hollow region 2111, in order to alleviate the bulging of the outer surface of the tobacco segment 211 caused by excessive heating of the aerosol generating matrix 300 filling the tobacco segment 211. Alternatively, in some embodiments, it is only necessary for one end of the vent 215 to be connected to the hollow region 2111, and the other end of the vent 215 does not need to be connected to the outside air.

[0057] like Figure 3 As shown, the laser heating assembly 30 includes a laser emitter 31, which emits laser light toward the aerosol generating article 200. The laser emitter 31 preferably uses a semiconductor laser chip. In some embodiments, the semiconductor laser chip may be an edge-emitting chip (EEL) or a surface-emitting chip (VCSEL), preferably an edge-emitting chip (EEL). Semiconductor laser chips include, but are not limited to, gallium arsenide (GaAs), cadmium sulfide (CdS), indium phosphide (InP), zinc sulfide (ZnS), gallium nitride (GaN), and other types.

[0058] In some embodiments, the light emitted by the laser emitter 31 is infrared light. In order to improve the absorption efficiency of the aerosol generation matrix and thus improve the heating efficiency, the wavelength of the infrared light is 800nm-1000nm, and more preferably 808nm-980nm.

[0059] In some embodiments, such as Figure 4 As shown, the aerosol generating device 100 also includes a driving mechanism 60, which is used to drive the laser heating component 30 to move along the circumference and / or along the length of the chamber 40, thereby adjusting the position of the laser heating component 30 irradiating the aerosol generating product 200 so that the aerosol generating product 200 is heated evenly, thereby improving the sucking experience.

[0060] In a specific embodiment, such as Figure 5 As shown, when there are multiple laser heating components 30, and these multiple laser heating components 30 are spaced apart along the length of the cavity 30 on one side of the cavity 40, all of the multiple laser heating components 30 are mounted on a longitudinally extending bracket 70. The bracket 70 is connected to the drive mechanism 60. The drive mechanism 60 drives the bracket 70 to move circumferentially along the cavity 40. The bracket 70 can then drive the multiple laser heating components 30 to rotate around the aerosol generating product 200. In this way, the drive mechanism 60 does not need to drive the laser heating components 30 to move along the length of the cavity 40 to ensure that the aerosol generating product 200 is heated evenly.

[0061] Alternatively, in another specific embodiment, such as Figure 6 As shown, there are multiple laser heating components 30, which are spaced apart circumferentially along the cavity direction 40. The multiple laser heating components 30 are mounted on an annular bracket 70 and located in the same plane. The drive mechanism 60 and the bracket 70 are connected by transmission. The drive mechanism 60 drives the bracket 70 to move along the length direction of the cavity 40. The bracket 70 can then drive the multiple laser heating components 30 to move along the length direction of the cavity 40. In this way, the drive mechanism 60 does not need to drive the laser heating components 30 to rotate around the aerosol generating product 200 to ensure that the aerosol generating product 200 is heated evenly.

[0062] Alternatively, when the number of laser heating components 30 is small, such as one or two, to ensure uniform heating of the aerosol-generating product 200, the driving mechanism needs to time-divisionally drive the laser heating components 30 to move circumferentially around the chamber 40. This means driving the laser heating components 30 to rotate around the aerosol-generating product 200 while also moving along the length of the chamber 40. Specifically, the driving mechanism can first drive the laser heating components 30 to rotate once around the aerosol-generating product 200, then drive them to rise a certain distance along the length of the chamber 40, and then drive them to rotate once more around the aerosol-generating product 200, repeating this cycle until the laser heating components 30 rise to a preset position.

[0063] Alternatively, in some embodiments, when the number of laser heating components 30 is small, each laser heating component 30 can also be driven by a separate driving mechanism, such as... Figure 7 As shown.

[0064] like Figure 4 As shown, the drive mechanism 60 includes a drive element 61 and a transmission component 62 connected to the drive element. The drive element 61 can be any one of a motor, hydraulic cylinder, or pneumatic cylinder, and the transmission component 62 can be any one or more of a screw, lead screw, or gear connected to the drive element, so that the drive mechanism 60 can drive the laser heating assembly 30 to move.

[0065] For example, when the driving element 61 is a motor, the transmission element 62 is connected to the rotating shaft of the motor. The transmission element 62 can be a screw or lead screw, which can convert the rotation of the rotating shaft into linear motion of the support 70, thereby enabling the laser heating assembly 30 to move along the length of the chamber 30. Alternatively, the transmission element 62 can be a gear, which is connected to the rotating shaft of the motor, so that the motor can drive the gear to rotate. The support 70 is provided with a driven wheel that drives the gear. The driven wheel meshes with the gear, thereby driving the support 70 to rotate, and the support 70 drives the laser heating assembly 30 to rotate.

[0066] It should be noted that the drive mechanism 60 can also drive the laser heating component 30 to move in other ways. This application does not limit the way the drive mechanism 60 drives the laser heating component 30 to move.

[0067] In some embodiments, such as Figure 8 As shown, the aerosol generating device 100 does not require a drive mechanism 60 to drive the laser heating component 30 to move. The aerosol generating device 100 includes multiple laser heating components 30, which are arranged to form a hollow cylindrical body. When the aerosol generating product 200 is housed in the chamber 40, the tobacco segment 211 of the aerosol generating product 200 is housed in the cylindrical body. Thus, the multiple laser heating components 30 can heat the aerosol generating product 200 from multiple positions in the longitudinal and circumferential directions, thereby making the aerosol generating product 200 heated evenly.

[0068] In some embodiments, such as Figure 3 As shown, the laser heating module 30 also includes an optical path shaping mechanism 32, which is located in the laser emission path. This mechanism is used to collimate and / or homogenize the laser emitted by the laser emitter 31, thereby adjusting the shape of the laser spot output to the aerosol-generating product 200. For example, the laser spot shape after processing by the optical path shaping mechanism 32 can be an annular columnar shape or a long strip shape. The optical path shaping mechanism 32 can be combined with the laser emitter 31 or designed independently. The optical path shaping mechanism 32 can be a single component or a combination of multiple components.

[0069] In one embodiment, the optical path shaping mechanism 32 includes at least one collimator (not shown) and at least one homogenizer (not shown). The collimator is used to collimate the emitted laser beam. In some embodiments, the collimator may be one or more spherical mirrors, aspherical mirrors, or conical lenses; in this embodiment, an aspherical mirror is preferred. The homogenizer is used to homogenize the laser beam after collimation. In some embodiments, the homogenizer may be a diffractive optical lens or a refractive optical lens to homogenize the beam through diffraction or refraction optics. In this embodiment, a diffractive optical lens is preferred.

[0070] The optical path shaping mechanism 32 may also include spherical lenses such as plano-convex lenses and double-sided convex lenses, or aspherical lenses such as reflecting mirrors and conical lenses, which can change the shape, energy distribution, and transmission direction of the light beam. The materials of the collimator and homogenizer include, but are not limited to, optical lens materials such as PC lenses, glass lenses, and resin lenses. In this embodiment, the materials of the collimator and homogenizer are preferably PC plastic and resin plastic.

[0071] In some embodiments, such as Figure 3 As shown, the laser heating assembly 30 also includes a heat dissipation mechanism 33, which is used to dissipate heat from the laser emitter 31. The heat dissipation mechanism 33 is a heat dissipation device made of a high thermal conductivity material. The heat dissipation device is in contact with the laser emitter 31, thereby dissipating the heat on the laser emitter 31 in a timely manner. The heat dissipation device can be a heat sink for supporting the laser emitter 31, or a heat dissipation fin that is in contact with the laser emitter 31. Alternatively, in some embodiments, the heat dissipation mechanism 33 can also be a combination of a heat dissipation device and a fan. The heat dissipation effect can be further increased by adding a fan that works in conjunction with the heat dissipation device. Alternatively, in some embodiments, the heat dissipation mechanism 33 includes a heat sink (not shown) and a plurality of heat dissipation fins (not shown) disposed on one side of the heat sink, with the laser emitter 31 attached to the other side of the heat sink, and the plurality of heat dissipation fins arranged in an array.

[0072] In some embodiments, such as Figure 2 As shown, the hollow region 2111 is located in the central region of the tobacco segment 211, meaning that the hollow region 211 and the tobacco segment 211 share a common longitudinal axis L, and thus... Figure 2 Looking at the cross-section of the aerosol-generating article 200 shown, the thickness d of the aerosol-generating matrix 300 on both sides of the hollow region 2111 is basically the same. This allows the aerosol-generating matrix 300 to be uniformly filled in the tobacco segment 211, thereby ensuring that the aerosol-generating matrix 300 is heated evenly and volatilizes fully, which is beneficial for improving the smoking experience. Alternatively, in some embodiments, the hollow region 2111 can be offset from the longitudinal axis L of the tobacco segment 211, as long as the hollow region 2111 exists in the aerosol-generating matrix 300.

[0073] In some embodiments, the controller is configured to control the laser emitter 31 in a pulsed manner. Specifically, the controller controls the battery cell 10 to provide a constant drive current to the laser emitter 31, and the controller can then adjust the optical power of the laser emitter 31 by controlling the output voltage. Compared with constant voltage drive, using constant current drive allows the laser emitter 31 to heat the aerosol-generating article 200 at a high frequency and low duty cycle, thereby increasing the heating rate.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An aerosol-generating system comprising an aerosol-generating article, and an aerosol- generating device for heating the aerosol-generating article to generate an aerosol, characterised in that, The aerosol generating article is in a long strip shape and comprises, in the longitudinal length direction thereof: a tobacco segment filled with an aerosol generating substrate having a hollow region extending in the length direction of the tobacco segment; a cooling segment connected to the tobacco segment; and a filter segment connected to the cooling segment, the aerosol generated by the aerosol generating substrate being adapted to flow from the hollow region to the cooling segment and the filter segment; The aerosol generating device comprises: a chamber for accommodating the aerosol generating article; at least one laser heating assembly comprising a laser emitter for emitting laser to the aerosol generating article to radiate energy to the aerosol generating article, thereby causing the aerosol generating substrate to generate aerosol.

2. An aerosol-generating system according to claim 1, wherein, The aerosol generating device further comprises a driving mechanism for driving the laser heating assembly to move in the circumferential direction of the chamber and / or in the length direction of the chamber.

3. An aerosol-generating system according to claim 2, wherein, The aerosol generating device further comprises a bracket, and a plurality of laser heating assemblies are mounted on the bracket, the bracket being in transmission connection with the driving mechanism.

4. An aerosol-generating system according to claim 3, wherein, The plurality of laser heating assemblies are arranged in the circumferential direction of the chamber and located in the same plane, and the driving mechanism is configured to drive the bracket to move in the length direction of the chamber.

5. An aerosol-generating system according to claim 2, wherein, The driving mechanism is configured to drive the corresponding laser heating assembly to move in the circumferential direction of the chamber or in the length direction of the chamber at different times.

6. An aerosol-generating system according to claim 1, wherein, The laser heating assembly comprises a plurality of laser heating assemblies, and the plurality of laser heating assemblies enclose a hollow cylindrical body, and the aerosol generating article can be accommodated in the cylindrical body.

7. An aerosol-generating system according to claim 1, wherein, The laser is infrared light, and the wavelength of the laser is 800nm-1000nm, or the wavelength of the laser is 808nm-980nm.

8. An aerosol-generating system according to claim 1, wherein, The laser heating assembly comprises an optical path shaping mechanism for adjusting the spot shape of the laser output to the aerosol generating article.

9. An aerosol-generating system according to claim 8, wherein, The optical path shaping mechanism comprises at least one collimating member for collimating the emitted laser, and at least one homogenizing member for homogenizing the collimated laser.

10. An aerosol-generating system according to claim 1, wherein, The hollow region is located in the central region of the tobacco segment.

11. An aerosol-generating system according to claim 1, wherein, The laser heating assembly further comprises a heat dissipation mechanism for dissipating heat from the laser emitter.

12. An aerosol-generating system according to claim 11, wherein, The heat dissipation mechanism comprises a heat dissipation plate and a plurality of heat dissipation fins arranged on one side of the heat dissipation plate, and the laser emitter is attached to the other side of the heat dissipation plate, and the plurality of heat dissipation fins are arranged in an array.

13. An aerosol-generating system according to claim 1, wherein, The aerosol generating device further comprises a controller and an electric core, and the controller is configured to control the electric core to provide a constant current to the laser emitter.

14. An aerosol-generating system according to claim 1, characterised in that, The laser emitter comprises a semiconductor laser chip.

15. A sol-gel generated article, characterized in that, The aerosol generating article is in a long strip shape and comprises, in the longitudinal length direction thereof: a tobacco segment filled with an aerosol generating substrate having a hollow region extending in the length direction of the tobacco segment; a cooling segment connected to the tobacco segment; and a filter segment connected to the cooling segment, the aerosol generated by the aerosol generating substrate being adapted to flow from the hollow region to the cooling segment and the filter segment; A filter section is connected to the cooling section, and the aerosol generated by the aerosol generating substrate is adapted to flow from the hollow region to the cooling section and the filter section.

16. The sol-gel forming article of claim 15, wherein, Further comprising: A blocking member is arranged at one end of the tobacco section away from the cooling section, for blocking the aerosol generating substrate. 17.The sol-gel preparation according to claim 15, wherein, A plurality of air holes are arranged on the tobacco section and extend along the radial direction of the tobacco section, and each of the air holes is in communication with the hollow region.

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