An aerosol-generating device

Abstract

The present application provides an aerosol generating device, comprising: a housing and a heating mechanism, an accommodation space and a receiving cavity spaced apart from the accommodation space are formed inside the housing. The heating mechanism is rotatably arranged in the accommodation space and extends from the accommodation space through the bottom of the receiving cavity to the aerosol generating article located in the receiving cavity. The heating mechanism is configured to rotate relative to the aerosol generating article around the axis of the aerosol generating article and move relative to the aerosol generating article in the axial direction of the aerosol generating article during rotation, so as to heat different positions in the circumferential direction and different positions in the axial direction of the aerosol generating article inside the aerosol generating article, and make the aerosol generating article generate aerosol.

Description

Technical Field

[0001] This invention relates to the tobacco industry, and in particular to an aerosol generating apparatus. Background Technology

[0002] Currently, aerosol generation devices widely use resistance heating elements to heat the aerosol generation matrix. Resistance heating elements transfer heat to the matrix via thermal conduction, resulting in a slow temperature rise response and diffuse heat transfer within the matrix. This leads to a long time required for the matrix to reach the aerosol generation temperature, often requiring users to wait a considerable amount of time before starting aspiration, resulting in a poor user experience.

[0003] Laser heating technology has attracted attention due to its high energy density and rapid heating. However, in aerosol generation devices using laser heating, when it is necessary to increase the number of suction ports, the length of the aerosol generation matrix in the circumferential or axial direction must be increased accordingly, resulting in an increase in product volume and a corresponding extension of heating time. It is difficult to achieve a large number of suction ports while maintaining a small and compact product. Summary of the Invention

[0004] In view of this, the present invention provides an aerosol generating device to achieve a large number of suction ports while keeping the product small and compact.

[0005] As one aspect of the present invention, an aerosol generating apparatus is provided, comprising:

[0006] The shell has an internal accommodating space and a receiving cavity spaced apart from the accommodating space;

[0007] A heating mechanism is rotatably disposed in a receiving space and extends from the receiving space through the bottom of a receiving cavity to an aerosol generating article located within the receiving cavity. The heating mechanism is configured to rotate relative to the aerosol generating article about its axis and to move relative to the aerosol generating article in the axial direction during rotation, so as to heat the aerosol generating article at different positions in the circumferential direction and at different positions in the axial direction inside the aerosol generating article, thereby causing the aerosol generating article to generate aerosols.

[0008] According to an embodiment of the present invention, the bottom of the receiving cavity is formed with an opening having internal threads;

[0009] The heating mechanism includes:

[0010] A light guide assembly is suitable for transmitting laser light to the aerosol generating article so that the laser light heats the aerosol generating article at different positions in the circumferential direction and at different positions in the axial direction. An external thread is formed on the outer wall of the light guide assembly so that the light guide assembly mates with the open thread.

[0011] A driving component is suitable for driving a light guide component to rotate, so that while the light guide component rotates, it moves relative to the aerosol generating article in the axial direction.

[0012] According to an embodiment of the present invention, the aerosol generating article includes: a filter tip section and a core section disposed at one axial end of the filter tip section; the core section is provided with an aerosol generating matrix, and the core section has a hollow portion extending in the axial direction to allow a light guide component to extend into it;

[0013] The pitch A of the external thread of the light guide assembly and the width B of the laser spot in the axial direction satisfy the following condition: A is greater than or equal to 0.7B.

[0014] According to an embodiment of the present invention, a toothed portion that is misaligned with the external thread is further formed on the outer side wall of the light guide assembly;

[0015] The driving component includes:

[0016] An annular toothed disk, wherein driving teeth are formed on the inner surface of the annular toothed disk, and the driving teeth mesh with the toothed portion;

[0017] The motor is suitable for driving the annular toothed disk to rotate, so that the annular toothed disk drives the light guide component to rotate.

[0018] According to an embodiment of the present invention, a toothed portion that is misaligned with the external thread is further formed on the outer side wall of the light guide assembly;

[0019] The driving component includes:

[0020] A gear, wherein the gear and the toothed portion mesh;

[0021] An electric motor is used to drive the gear to rotate, so that the annular gear disk drives the light guide assembly to rotate.

[0022] According to an embodiment of the present invention, the length of the toothed portion in the axial direction is greater than the maximum displacement of the light guide assembly in the axial direction.

[0023] According to an embodiment of the present invention, the core segment of the aerosol-generating article has a hollow portion extending in the axial direction to allow the heating mechanism to extend into it;

[0024] The aerosol generating matrix of the core segment is configured to be arranged in a spiral shape, and the pitch of the aerosol generating matrix is ​​greater than the width of the laser spot in the axial direction of the aerosol generating article.

[0025] According to an embodiment of the present invention, the rotation direction of the aerosol generating matrix is ​​the same as the rotation direction of the external thread.

[0026] According to an embodiment of the present invention, the circumferential radius of the hollow portion is greater than the rotation radius of the heating mechanism.

[0027] According to an embodiment of the present invention, the pitch of the heating mechanism is equal to the pitch of the aerosol generating matrix, so that the laser spot is aligned with the thread of the aerosol generating matrix during rotation.

[0028] According to an embodiment of the present invention, the heating mechanism rotates around the axis of the aerosol-generating product while also moving relative to it in the axial direction, enabling the laser to simultaneously scan and heat the inner wall of the product in both the circumferential and axial dimensions. Compared to existing technologies that can only move in one direction (circumferential or axial only), the present invention achieves omnidirectional, dead-angle-free heating of the inner wall of the aerosol-generating product, ensuring that all areas of the aerosol-generating matrix are fully heated, resulting in a more stable and uniform aerosol production. Because the heating mechanism can move in the axial direction, the effective heating length of the aerosol-generating product is no longer limited to a single dimension. With the product's external dimensions remaining unchanged, axial movement allows the heating area to cover a longer region, thereby significantly increasing the number of available suction ports.

[0029] The heating mechanism simultaneously achieves both rotational and axial movement, both driven by the same mechanism, eliminating the need for separate large spaces for each movement. Compared to existing technologies that require separate circumferential and axial movement mechanisms, this invention offers a more integrated structure, reducing the overall size of the aerosol generator and improving portability. Both the rotation and axial movement of the heating mechanism are purely mechanical, while the laser emitter remains stationary and does not move with the heating mechanism. This avoids problems such as repeated bending and fatigue fracture of the wires or poor contact due to wear of the sliding electrodes caused by the overall movement of the laser module in existing technologies, thus improving the electrical reliability and mechanical lifespan of the aerosol generator. Attached Figure Description

[0030] The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings, in which:

[0031] Figure 1 A schematic diagram of an aerosol generating apparatus according to an embodiment of the present invention is shown.

[0032] Figure 2It shows that according to Figure 1 A schematic diagram of the principle of heating aerosol-generating products using an aerosol generating device.

[0033] Figure 3 A schematic diagram of a light guide assembly provided according to an embodiment of the present invention is shown.

[0034] Figure 4 A schematic diagram of a light guide assembly provided according to another embodiment of the present invention is shown.

[0035] Figure 5 It shows Figure 4 A three-dimensional image.

[0036] Figure 6 A cross-sectional view along the axial direction of an aerosol-generated article provided according to an embodiment of the present invention is shown.

[0037] Figure 7 The heating trajectory of the heating assembly provided according to an embodiment of the present invention within an aerosol-generating article is shown.

[0038] Figure 8 A perspective view of another aerosol-generated article provided according to an embodiment of the present invention is shown.

[0039] Figure 9 It shows Figure 8 A cross-sectional view along the axial direction of the aerosol-generated product.

[0040] Figure 10 To Figure 8 A schematic diagram of heat conduction during the heating of aerosol-generated products.

[0041] Figure 11 To Figure 8 A schematic diagram of heat conduction during the heating of aerosol-generated products.

[0042] Figure 12 A schematic diagram of an aerosol generating apparatus according to another embodiment of the present invention is shown.

[0043] Explanation of reference numerals in the attached figures

[0044] 10. Housing; 11. Accommodating space; 12. Receiving cavity; 20. Aerosol generating product; 21. Filter section; 22. Cigarette core section; 221. Hollow part; 30. Heating mechanism; 31. Laser; 32. Light guide assembly; 321. Light guide tube; 321A. External thread; 322. Reflector; 322A. Toothed part; 33. Drive assembly; 331. Ring toothed disc; 332. Motor; 40. Power supply; 50. Detector; 60. Circuit board. Detailed Implementation

[0045] In the process of developing this invention, it was discovered that existing laser-heated aerosol generation devices employ either a laser module rotating circumferentially around the aerosol-generated product or a laser module moving linearly along the axial direction of the aerosol-generated product. While both methods can heat different areas of the aerosol-generating matrix, they both suffer from the following drawbacks: the laser module requires a large movement space in either the circumferential or axial direction, resulting in a relatively large overall device size; simultaneously, the laser module needs to maintain a continuous electrical connection with the circuit board during movement, and long-term reciprocating motion can easily cause wire fatigue breakage or electrode wear and poor contact, thus shortening the device's lifespan. Furthermore, the heating area is limited to a single direction in either the circumferential or axial direction, limiting the number of suction ports to the size and length of the aerosol-generating matrix in that direction, thus preventing the implementation of a large number of suction ports. Therefore, there is a need for an aerosol generation device and system that can leverage the advantage of high laser heating speed while providing a larger number of suction ports without significantly increasing the product size.

[0046] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the invention for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0047] Figure 1 A schematic diagram of an aerosol generating apparatus according to an embodiment of the present invention is shown.

[0048] Figure 2 It shows that according to Figure 1 A schematic diagram of the principle of heating aerosol-generating products using an aerosol generating device.

[0049] like Figures 1-2 As shown, the aerosol generating device includes: a housing 10 and a heating mechanism 30.

[0050] The housing 10 has an internal accommodating space 11 and a receiving cavity 12 spaced apart from the accommodating space 11. Inside the housing 10 of the aerosol generating device, there are two mutually isolated (not directly connected) functional areas. The heating mechanism 30 is rotatably disposed in the accommodating space 11 and extends from the accommodating space 11 through the bottom of the receiving cavity 12 to the aerosol generating article 20 (a consumable containing an aerosol generating matrix, typically a disposable cartridge, stick, or cigarette) located within the receiving cavity 12. The heating mechanism 30 is configured to rotate relative to the aerosol generating article 20 about its axis and move relative to the aerosol generating article 20 in the axial direction during rotation, so as to heat the aerosol generating article 20 at different positions in the circumferential direction and in the axial direction inside the aerosol generating article 20, thereby causing the aerosol generating article 20 to generate aerosol.

[0051] According to an embodiment of the present invention, the receiving cavity 12 provides a base for mounting and passing through the rotatable heating mechanism 30, and also isolates the heat-generating receiving cavity 12 from the receiving space 11 to prevent high temperature damage to the devices in the receiving space.

[0052] According to an embodiment of the present invention, the heating mechanism 30 rotates around the axis of the aerosol-generating product 20 while also moving relative to it in the axial direction, enabling the laser to simultaneously scan and heat the inner wall of the product in both the circumferential and axial dimensions. Compared to existing technologies that can only move in one direction (circumferential or axial only), the present invention achieves omnidirectional, dead-angle-free heating of the inner wall of the aerosol-generating product 20, ensuring that all areas of the aerosol-generating matrix are fully heated, resulting in a more stable and uniform aerosol production. Because the heating mechanism 30 can move in the axial direction, the effective heating length of the aerosol-generating product 20 is no longer limited to a single dimension. With the product's external dimensions remaining unchanged, axial movement allows the heating area to cover a longer region, thereby increasing the number of available suction ports.

[0053] The heating mechanism 30 simultaneously achieves both rotational and axial movement, both driven by the same mechanism, eliminating the need for separate large spaces for each movement. Compared to existing technologies that require separate circumferential and axial movement mechanisms, this invention offers a more integrated structure, reducing the overall size of the aerosol generator and improving portability. Both the rotation and axial movement of the heating mechanism 30 are purely mechanical, while the laser emitter remains stationary and does not move with it. This avoids problems such as repeated bending and fatigue fracture of the wires or poor contact due to wear of the sliding electrodes caused by the overall movement of the laser module in existing technologies, significantly improving the electrical reliability and mechanical lifespan of the aerosol generator.

[0054] According to an embodiment of the present invention, the bottom of the receiving cavity 12 forms an opening with an internal thread. The heating mechanism 30 includes a laser 31, a light guide assembly 32, and a driving assembly 33. The laser 31 is adapted to emit laser light, and the light guide assembly 32 is adapted to transmit the laser light to the aerosol generating article 20 so that the laser heats different positions of the aerosol generating article 20 in the circumferential direction and different positions in the axial direction. An external thread 321A is formed on the outer wall of the light guide assembly 32 so that the light guide assembly 32 mates with the open thread. The driving assembly 33 is adapted to drive the light guide assembly 32 to rotate, so that the light guide assembly 32 rotates while moving relative to the aerosol generating article 20 in the axial direction.

[0055] According to an embodiment of the present invention, by providing an internal thread at the bottom opening of the receiving cavity 12 and providing an external thread 321A that mates with it on the outer wall of the light guide assembly 32, when the driving assembly 33 drives the light guide assembly 32 to rotate, the threaded engagement naturally converts the rotational motion into axial movement. This eliminates the need for an additional independent axial drive mechanism (such as a lead screw, linear motor 332, electromagnet, etc.), simplifying the device structure and reducing the number of parts and manufacturing costs.

[0056] According to one embodiment of the present invention, a toothed portion 322A, which is offset from the external thread 321A, is also formed on the outer side wall of the light guide assembly 32; the drive assembly 33 includes an annular gear disk 331 and a motor 332, wherein drive teeth are formed on the inner surface of the annular gear disk 331, and the drive teeth mesh with the toothed portion 322A. The motor 332 is adapted to drive the annular gear disk 331 to rotate, so that the annular gear disk 331 drives the light guide assembly 32 to rotate. The drive teeth on the inner surface of the annular gear disk 331 are evenly distributed circumferentially, forming multiple points of simultaneous meshing with the toothed portion 322A on the outer side wall of the light guide assembly 32. The driving torque is symmetrically applied to the circumference of the light guide assembly 32, avoiding radial off-center loading, and making the rotation of the light guide assembly 32 more stable. The drive assembly 33 can be mounted on a bracket, for example.

[0057] According to another embodiment of the present invention, a toothed portion 322A that is offset from the external thread 321A is also formed on the outer side wall of the light guide assembly 32. The drive assembly 33 includes a gear and a motor 332. The gear and the toothed portion 322A mesh. The motor 332 is adapted to drive the gear to rotate, so that the annular gear disk 331 drives the light guide assembly 32 to rotate. The gear and the toothed portion 322A of the light guide assembly 32 are externally meshed. The gear can be arranged at any position on the side of the light guide assembly 32. The installation position of the motor 332 is not limited by the axial dimension of the light guide assembly 32, which facilitates flexible layout within the housing 10 and adapts to device designs with different external dimensions.

[0058] According to an embodiment of the present invention, the length of the toothed portion 322A in the axial direction is greater than the maximum displacement of the light guide assembly 32 in the axial direction. The light guide assembly 32 moves axially during rotation, and the distance it moves is the maximum displacement. The axial length of the toothed portion 322A is greater than this displacement, meaning that regardless of whether the light guide assembly 32 is at the start, middle, or end of its stroke, the toothed portion 322A always remains engaged with the drive teeth of the drive assembly 33. This avoids power interruption caused by the toothed portion 322A disengaging from the drive teeth due to axial movement, ensuring a continuous and stable heating process.

[0059] Figure 3 A schematic diagram of a light guide assembly 32 provided according to an embodiment of the present invention is shown.

[0060] Figure 4 A schematic diagram of a light guide assembly 32 provided according to another embodiment of the present invention is shown.

[0061] Figure 5 It shows Figure 4 A three-dimensional image.

[0062] According to an embodiment of the present invention, the light guide assembly 32 includes a light guide tube 321 and a reflector 322. Laser light enters the light guide tube 321 from one end. The through-hole of the light guide tube 321 serves as a transmission channel for the laser. The reflector 322 is disposed at the other end of the light guide tube 321 to reflect the laser light into the interior of the aerosol generating article 20. The driving assembly 33 is adapted to drive the light guide tube 321 to rotate. The light guide tube 321 can serve as a base for the reflector 322 to support the reflector 322. One end of the light guide tube 321 has an external thread 321A, and the other end has a toothed portion 322A.

[0063] like Figure 3 As shown, the reflective part 322 includes a reflector, the reflective surface of which is located in the optical path of the laser, and the reflective surface of the reflector and the light guide tube 321 are inclined relative to each other. By inclining the reflective surface of the reflector relative to the light guide tube 321, the laser light incident along the axial direction of the light guide tube 321 is reflected by the reflective surface, and its emission direction changes from parallel to the light guide tube 321 to propagating towards the inner wall of the aerosol generating product 20. Therefore, the laser light can be guided to the inner surface of the aerosol generating product 20 for heating, achieving the purpose of heating the aerosol generating matrix from the inside.

[0064] According to embodiments of the present invention, the reflector is coated with at least one reflective film, and each reflective film is made of one or more of Au, Ag, TiO2, SiO2, Ta2O5, ZnSe, and YF3. Au and Ag have high reflectivity for infrared lasers. Coating the reflector surface with these metal materials allows most of the laser energy to be reflected to the surface of the aerosol generation matrix, reducing the reflector's own absorption of the laser, improving energy utilization efficiency, and achieving rapid heating. The reflector can also be coated with a multilayer reflective film consisting of alternating layers of high-refractive-index materials (TiO2, Ta2O5) and low-refractive-index materials (SiO2, YF3), which can achieve a reflectivity of over 99% for specific wavelengths (such as 808nm, 980nm, or 10.6μm) output by the laser 31131, and the reflection bandwidth is controllable, superior to the reflective performance of a single metal film.

[0065] like Figure 4 As shown, the reflector 322 includes a prism. The light-receiving surface of the prism is disposed at one end of the light guide tube 321, and the light-reflecting surface of the prism is configured to be inclined relative to the receiving surface to reflect the laser. After being reflected by the light-reflecting surface, the laser is output from the light-emitting surface. The prism is made of one or more materials selected from fused silica, sapphire, microcrystalline glass, zinc selenide, and sodium chloride.

[0066] Figure 6 A cross-sectional view along the axial direction of an aerosol-generating article provided according to an embodiment of the present invention is shown.

[0067] like Figure 6 As shown, the aerosol generating article 20 includes a filter section 21 and a core section 22. The core section 22, located at one axial end of the filter section 21, functions to trap a portion of the aerosol. The core section 22 is suitable for insertion into a receiving mechanism. An aerosol generating matrix is ​​disposed within the core section 22. The core section 22 is cylindrical and has a hollow portion 221 extending axially to allow the heating mechanism 30 to extend into it. The aerosol generating matrix may contain plant fibers and nicotine or nicotine salts, etc.

[0068] According to an embodiment of the present invention, the circumferential radius of the hollow portion 221 is greater than the rotation radius of the heating mechanism 30. The axial radius of the hollow portion 221 is greater than the rotation radius of the heating mechanism 30, so that there is a certain gap between the heating mechanism 30 and the inner surface of the aerosol generating product 20, avoiding contact between the heating mechanism 30 and the inner surface of the aerosol generating product 20, thereby driving the aerosol generating product to rotate or move axially during the rotation of the heating mechanism 30.

[0069] Figure 7 The heating assembly provided according to an embodiment of the present invention is shown in Figure 6 The heating trajectory within the aerosol-generated product.

[0070] According to embodiments of the present invention, such as Figure 7 As shown, the pitch A of the external thread 321A of the light guide component 32 and the width B of the laser spot in the axial direction satisfy the following condition: A is greater than or equal to 0.7B. Pitch A is the distance the external thread 321A of the light guide component 32 moves axially for each revolution (360°). The width B of the laser spot in the axial direction refers to the length of the heating area in the axial direction of the aerosol generating product 20 after the laser is emitted from the optical path changer and irradiates the inner wall surface of the aerosol generating product 20.

[0071] According to an embodiment of the present invention, when the light guide component 32 rotates one revolution, the distance it moves axially is the pitch A, and the width of the heating area formed by the laser spot on the surface of the aerosol generating matrix in the axial direction is B. When A ≥ 0.7B, the overlap of the heating areas of adjacent two cycles is controlled within a reasonable range (not exceeding 30% of the total heating area). This avoids the situation where a large number of areas are repeatedly heated due to an excessively small pitch (A is much smaller than B), resulting in energy waste and local overheating. Alternatively, since the heating area of ​​the laser spot is fixed, the more areas that are repeatedly heated, the smaller the heating area of ​​the unheated aerosol generating matrix becomes, resulting in a smaller amount of aerosol generated and a poorer aroma. A being greater than or equal to 0.7B avoids the situation where excessively large areas of repeated heating would cause the same part of the aerosol generating matrix to be repeatedly irradiated by the laser, causing the temperature of that area to rise excessively, easily producing a burnt smell, unpleasant odor, or even harmful substances.

[0072] Figure 8 A perspective view of another aerosol-generated article provided according to an embodiment of the present invention is shown.

[0073] Figure 8 A perspective view of another aerosol-generated article provided according to an embodiment of the present invention is shown. Figure 9 It shows Figure 8 A cross-sectional view along the axial direction of the aerosol-generated product.

[0074] like Figure 8 and Figure 9 The aerosol generating matrix of the core section 22 is configured to be arranged in a spiral shape, and the pitch L of the aerosol generating matrix is ​​greater than the width of the laser spot in the axial direction of the aerosol generating product 20.

[0075] The aerosol-generating matrix is ​​arranged in a spiral pattern, with gaps between adjacent spiral coils. By setting the pitch (the axial distance between adjacent spiral coils) to be greater than the axial width of the laser spot, it is ensured that the laser irradiates only one coil of the matrix at a time, preventing simultaneous heating of two adjacent coils. This avoids matrix overheating and energy waste caused by heating multiple coils simultaneously, ensuring that each coil of the matrix generates aerosols at the optimal temperature.

[0076] Figure 10 To Figure 8 A schematic diagram of heat conduction during the heating of aerosol-generated products.

[0077] like Figure 10 As shown, the core segment 22 of the aerosol-generating product 20 has a hollow cylindrical structure, such as... Figure 9 As shown, during the heating process of the aerosol-generating product 20, its heat is conducted to the surroundings, resulting in heat loss, low aerosol generation, and insufficient energy utilization.

[0078] Figure 11 To Figure 8 A schematic diagram of the heat conduction state of the aerosol-generated product 20 during heating.

[0079] According to an embodiment of the present invention, reference Figure 9 and Figure 11 The rotation direction of the aerosol generating matrix is ​​the same as that of the external thread 321A. The pitch of the aerosol generating matrix is ​​equal to the pitch of the heating mechanism 30, both being A, so that the laser spot is aligned with the thread of the aerosol generating matrix during rotation. By making the pitches of the heating mechanism 30 and the aerosol generating matrix equal and in the same direction, they form a synchronous rotational relationship during relative motion. Because the laser spot remains aligned with the thread, the laser energy is precisely concentrated in the thread area that needs to be vaporized, reducing energy dissipation to non-target areas and improving thermal efficiency. Figure 11 As shown, in the case of Figure 10 When the aerosol-generated products are heated, the heat can only be conducted in two directions: forward and backward. Heat loss is relatively small, and the amount of aerosol generated is large. Furthermore, about half of the heat is conducted to the next heating zone, serving a preheating function, thus ensuring full utilization of the heat.

[0080] Figure 12 A schematic diagram of an aerosol generating apparatus according to another embodiment of the present invention is shown.

[0081] like Figure 12 As shown, the aerosol generating device also includes a detector 50, which is disposed in the receiving mechanism and is used to detect whether the aerosol generating article 20 is present in the receiving mechanism. The detector 50 can sense in real time whether the aerosol generating article 20 is inserted into the receiving mechanism. The laser 31 is only allowed to start heating when the article is detected; if no article is detected or the article has been removed, the laser 31 is locked or stops working to avoid the laser directly irradiating the internal structure of the receiving cavity 12, causing damage or safety hazards.

[0082] According to an embodiment of the present invention, the detector 50 may be, for example, an infrared detector 50, which includes an infrared emitter and an infrared receiver, which may be disposed opposite to each other on both sides of the receiving mechanism. The infrared emitter emits infrared rays toward the interior of the receiving cavity 12, and the infrared rays pass through the receiving cavity 12 and are directed toward the infrared receiver. When the aerosol generating article 20 is not inserted into the receiving cavity 12, the infrared intensity received by the infrared receiver is high; when the aerosol generating article 20 is inserted into the receiving cavity 12, the article blocks part or all of the infrared rays, resulting in a decrease in the intensity of the infrared rays received by the infrared receiver. When the intensity of the infrared rays received by the infrared receiver is lower than a preset threshold, it is determined that the aerosol generating article 20 has been inserted, and the aerosol generating system is allowed to start. Alternatively, the infrared emitter and the infrared receiver are disposed side by side on the same side of the receiving mechanism. The infrared emitter emits infrared rays toward the interior of the receiving cavity 12, and when the aerosol generating article 20 is inserted, the surface of the article reflects the infrared rays back to the infrared receiver, making the intensity of the infrared rays received by the receiver higher than the preset threshold. At this time, it is determined that the article has been inserted, and the aerosol generating system is allowed to start.

[0083] According to an embodiment of the present invention, the aerosol generating device further includes an airflow sensing mechanism disposed in the housing mechanism, suitable for detecting airflow within the housing mechanism. The airflow sensing mechanism can detect the user's suction action in real time. When the user suctions, an airflow change occurs within the housing mechanism, the airflow sensing mechanism captures this signal and triggers the laser 31 to heat up; when the user stops suctioning, the laser 31 pauses operation or reduces power. This on-demand heating method consumes electrical energy only during suction, significantly extending the single-charge usage time of the power supply 40. If the aerosol generating matrix is ​​continuously heated for a long time without suction, it may cause the matrix to overheat, dry-burn, and produce a burnt smell or harmful substances. The airflow sensing mechanism ensures that laser heating is synchronized with the suction action, avoiding ineffective heating when there is no suction.

[0084] The aerosol generating device also includes a power supply 40 and a circuit board 60. The power supply 40 provides electrical energy to the laser 31 and the drive mechanism. The circuit board 60 controls the start and stop of the laser 31 and the drive mechanism. Based on signals from the detector 50 (whether the aerosol generating article 20 is inserted) and the airflow sensing mechanism (whether there is a suction action), the circuit board 60 controls the laser 31 to start or stop emitting laser light, achieving on-demand heating. The circuit board 60 can adjust the output power of the laser 31, for example, rapidly heating to the aerosol generating temperature at a higher power during the initial stage of suction, dynamically adjusting the power according to the airflow intensity during suction to match the aerosol output, or reducing the power to enter standby mode during suction intervals. The circuit board 60 is also used to control the drive mechanism to start or stop rotating the light guide tube 321. For example, rotation is started after the aerosol generating article 20 is inserted, and rotation stops when the aerosol generating article 20 is removed or after suction ends. The circuit board 60 can adjust the rotation speed of the drive mechanism, for example, to achieve fine heating by rotating at a slower speed, or to achieve rapid scanning heating by rotating at a faster speed, and different rotation speeds can also be used in different suction stages.

[0085] The aerosol generating device provided by the present invention can fully heat all parts of the aerosol generating matrix without moving the laser 31, avoiding electrical connection problems during the movement process, thereby effectively extending the service life of the device.

[0086] In this invention, the laser irradiation area can move synchronously in both the circumferential and axial directions of the aerosol generation matrix, achieving comprehensive heating of all areas of the aerosol generation matrix in both directions. Compared to existing aerosol generation devices, this invention can increase the number of suction ports by more than two times. The aerosol generation device of this invention can effectively reduce heat loss during the heating process, making full use of energy and further improving overall energy efficiency.

[0087] The embodiments of the present invention have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of the invention. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of the invention is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the invention, and all such substitutions and modifications should fall within the scope of the invention.

Claims

1. An aerosol generating device, characterized in that, include: The shell has an internal accommodating space and a receiving cavity spaced apart from the accommodating space; A heating mechanism is rotatably disposed in a receiving space and extends from the receiving space through the bottom of a receiving cavity to an aerosol generating article located within the receiving cavity. The heating mechanism is configured to rotate relative to the aerosol generating article about its axis and to move relative to the aerosol generating article in the axial direction during rotation, so as to heat the aerosol generating article at different positions in the circumferential direction and at different positions in the axial direction inside the aerosol generating article, thereby causing the aerosol generating article to generate aerosols.

2. The aerosol generating apparatus according to claim 1, characterized in that, The bottom of the receiving cavity has an opening with internal threads; The heating mechanism includes: A light guide assembly is suitable for transmitting laser light to the aerosol generating article so that the laser light heats the aerosol generating article at different positions in the circumferential direction and at different positions in the axial direction. An external thread is formed on the outer wall of the light guide assembly so that the light guide assembly mates with the open thread. A driving component is suitable for driving a light guide component to rotate, so that while the light guide component rotates, it moves relative to the aerosol generating article in the axial direction.

3. The aerosol generating apparatus according to claim 2, characterized in that, The aerosol generating article includes: a filter tip section and a core section disposed at one axial end of the filter tip section; the core section is provided with an aerosol generating matrix, and the core section has a hollow portion extending in the axial direction to allow a light guide component to extend into it; The pitch A of the external thread of the light guide assembly and the width B of the laser spot in the axial direction satisfy the following condition: A is greater than or equal to 0.7B.

4. The aerosol generating apparatus according to claim 3, characterized in that, The outer wall of the light guide assembly also has a toothed portion that is misaligned with the external thread; The driving component includes: An annular toothed disk, wherein driving teeth are formed on the inner surface of the annular toothed disk, and the driving teeth mesh with the toothed portion; The motor is suitable for driving the annular toothed disk to rotate, so that the annular toothed disk drives the light guide component to rotate.

5. The aerosol generating apparatus according to claim 4, characterized in that, The outer wall of the light guide assembly also has a toothed portion that is misaligned with the external thread; The driving component includes: A gear, wherein the gear and the toothed portion mesh; An electric motor is used to drive the gear to rotate, so that the annular gear disk drives the light guide assembly to rotate.

6. The aerosol generating apparatus according to claim 4 or 5, characterized in that, The length of the toothed portion in the axial direction is greater than the maximum displacement of the light guide assembly in the axial direction.

7. The aerosol generating apparatus according to claim 3, characterized in that, The aerosol generating matrix of the core segment is configured to be arranged in a spiral shape, and the pitch of the aerosol generating matrix is ​​greater than the width of the laser spot in the axial direction of the aerosol generating article.

8. The aerosol generating apparatus according to claim 2, characterized in that, The direction of rotation of the aerosol generating matrix is ​​the same as the direction of rotation of the external thread.

9. The aerosol generating apparatus according to claim 7, characterized in that, The circumferential radius of the hollow part is greater than the rotation radius of the heating mechanism.

10. The aerosol generating apparatus according to claim 7, characterized in that, The pitch of the heating mechanism is equal to the pitch of the aerosol generating matrix, so that the laser spot is aligned with the thread of the aerosol generating matrix during rotation.

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