Aerosol generating device and control method thereof

Abstract

The present application discloses an aerosol generating device and a control method thereof, which relate to the field of aerosol technology. The aerosol generating device includes a heating chamber and a heating module. The heating module is arranged below the heating chamber. When the aerosol substrate is placed in the heating chamber, its bottom end surface is thermally connected to the heating module. The heating module is provided with a plurality of air flow channels connected to the heating chamber. The heating element in the heating module can heat the air flowing through the air flow channel when powered on. The heated air rises into the heating chamber to form heat convection to heat the aerosol substrate, so that the aerosol substrate can be heated by both heat conduction and heat convection in the heating chamber, thereby optimizing the heating method of the aerosol substrate, achieving efficient and uniform aerosol generation, improving the generation efficiency and quality of the aerosol, and enhancing the user experience. The control method realizes an efficient and safe aerosol generation process by intelligently monitoring and adjusting the temperature of the smoking section of the aerosol substrate.

Description

Technical Field

[0001] The present application relates to the field of aerosol technology, and in particular to an aerosol generating device and a control method thereof. Background Art

[0002] In recent years, new tobacco products, such as heated tobacco products, have rapidly gained popularity around the world as healthier, more contemporary, and innovative products, attracting a growing number of consumers. As an alternative to traditional tobacco, heated tobacco products, with their diverse structure and lower harmfulness, have gained popularity among consumers. Unlike traditional cigarettes, which release smoke by burning tobacco, heated tobacco products heat tobacco or tobacco extracts at a lower temperature to release nicotine and aroma, reducing the production of harmful substances. This heating process typically does not produce noticeable smoke, but instead forms an aerosol that users inhale to experience nicotine.

[0003] Heated tobacco products consist of a heating device and an aerosol generator, designed to provide smokers with a healthier smoking experience than traditional cigarettes. However, existing heating devices primarily utilize internal heating and external heating methods. Internal heating methods pose the problem of sugars and other components in the tobacco adhering to the heating element during heating, making cleaning difficult and the cigarette difficult to remove after puffing. External heating methods, on the other hand, pose the problem of incomplete combustion, resulting in an odorous aerosol, which degrades the smoker's experience. Furthermore, both heating methods suffer from uneven heating, making the quality of the generated aerosol difficult to guarantee, leading to a poor smoking experience for users.

[0004] Therefore, there is an urgent need to provide a new aerosol generating device to improve the uniformity of heating and the user experience. Summary of the Invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide an aerosol generating device that optimizes the heating method and improves the heating efficiency of the aerosol substrate, and a control method that can be applied to the aerosol generating device.

[0006] The technical solutions provided by the present invention are as follows:

[0007] An aerosol generating device comprising:

[0008] a heating chamber, for placing an aerosol substrate and heating the aerosol substrate to generate an aerosol;

[0009] The heating module is arranged below the heating chamber. When the aerosol substrate is placed in the heating chamber, its bottom end surface is thermally connected to the heating module. The heating module is provided with a plurality of air flow channels connected to the heating chamber. The heating elements in the heating module can heat the air flowing through the air flow channels when powered on. The heated air rises into the heating chamber to form heat convection to heat the aerosol substrate placed in the heating chamber.

[0010] Furthermore, a spoiler abutting against the heating module is provided at the bottom of the heating chamber. When the aerosol substrate is placed in the heating chamber, the bottom end surface thereof is connected to the spoiler by thermal conduction.

[0011] Furthermore, the heating cavity is provided with a heat flow inlet cavity and a heat insulation limit cavity in sequence above the spoiler;

[0012] The aerosol substrate includes a smoke generating section, a cooling section and a mouthpiece section in order from bottom to top along the axial direction;

[0013] When the aerosol substrate is placed in the heating cavity, the smoke generating section is inserted in the heat flow inflow cavity, and the bottom end surface is thermally connected to the spoiler, and the cooling section is inserted in the heat insulation limiting cavity.

[0014] Furthermore, the height of the heat flow confluence cavity is the same as the height of the smoking section;

[0015] And / or, when the smoking section is placed in the heat flow inlet cavity, it is located at the center of the heat flow inlet cavity and there is a gap between the smoking section and the heat flow inlet cavity in the radial direction.

[0016] And / or, when the temperature-lowering section is placed in the heat-insulating limiting cavity, it is located at the center of the heat-insulating limiting cavity and there is a gap between the temperature-lowering section and the heat-insulating limiting cavity in a radial direction.

[0017] Furthermore, when the cooling section is placed in the thermal insulation limit cavity, it is located at the center of the thermal insulation limit cavity, and there is a gap between the cooling section and the thermal insulation limit cavity in the radial direction. The gap value between the cooling section and the thermal insulation limit cavity in the radial direction is less than or equal to the deformation amount in the radial direction caused by the thermal expansion of the cooling section.

[0018] Furthermore, the spoiler is a spiral mosquito coil-like structure made of metal material, and / or the air flow channel is a honeycomb structure.

[0019] Furthermore, an air intake module is provided below the heating module, and the air intake module includes an air intake channel connected to the air flow channel and an exhaust fan arranged in the air intake channel. Under the driving action of the exhaust fan, external air enters the air flow channel along the air intake channel.

[0020] Furthermore, the air intake module also includes an air intake, which is a grid-like structure and has an adjustable opening and closing degree.

[0021] In another aspect, the present invention provides a method for controlling an aerosol generating device, wherein the aerosol generating device is any one of the aerosol generating devices described in the above embodiments, and further includes a power module, a control module, and an air intake module, wherein the air intake module includes an exhaust fan. The control method includes:

[0022] The control module continuously monitors the temperature of the smoking section of the aerosol substrate. Based on the monitored temperature, the control module performs the following operations:

[0023] When the temperature exceeds a preset threshold, the power of the exhaust fan is reduced to reduce the airflow to prevent the aerosol substrate from overheating; when the temperature is lower than the preset threshold, the power of the exhaust fan is increased to promote the generation of aerosol.

[0024] Furthermore, the air intake module further includes an air intake port, and the control method further includes:

[0025] The control module monitors the user's behavior and records the user's puff frequency and depth in real time. Based on the user's puff frequency and depth, the control module adjusts the power of the exhaust fan, the opening and closing degree of the air inlet, and the power of the heating module as follows:

[0026] When the user's puffing frequency is high, the power of the exhaust fan is increased to ensure sufficient airflow and aerosol supply; when the user's puffing frequency is low, the power of the exhaust fan is reduced;

[0027] When the user takes a deep puff, the opening of the air inlet is increased; when the user takes a shallow puff, the air inlet is appropriately closed;

[0028] When the user takes a deep breath more frequently, the power of the heating module is increased to speed up the generation of aerosol; when the user takes a deep breath less frequently, the power of the heating module is reduced to save energy.

[0029] Compared with the prior art, the aerosol generating device and control method provided by the embodiments of the present invention have at least the following technical effects:

[0030] The aerosol generating device is provided with a heating module below the heating chamber. The heating module is provided with multiple airflow channels connected to the heating chamber. When the aerosol substrate is placed in the heating chamber, its bottom end surface is thermally connected to the heating module. This allows the aerosol substrate to be heated by both heat conduction and heat convection in the heating chamber. This optimizes the heating method of the aerosol substrate, achieves efficient and uniform aerosol generation, improves the aerosol generation efficiency and quality, and enhances the user experience. Compared with the internal core heating method, this embodiment prevents sugars and other components in the tobacco from adhering to the heating element during the heating process through the combined effects of heat conduction and heat convection, thereby reducing the difficulty of cleaning and making it easier to remove the cigarette from the aerosol generating device after smoking. In addition, compared with the peripheral heating method, it avoids the problem of the generated aerosol having an odor due to incomplete combustion.

[0031] The control method of the aerosol generating device realizes an efficient and safe aerosol generating process by intelligently monitoring the temperature of the aerosol substrate smoking section and dynamically controlling the temperature of the aerosol smoking section by adjusting the power of the exhaust fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 Schematic diagram of the cross-sectional structure of an aerosol generating device in an embodiment of the present invention;

[0034] Figure 2 Schematic diagram of the structure of the heating chamber in an embodiment of the present invention;

[0035] Figure 3 Schematic diagram of the structure of the spoiler in an embodiment of the present invention;

[0036] Figure 4 This is a schematic structural diagram of a heating module according to an embodiment of the present invention;

[0037] Figure 5 is a top view of a heating module according to an embodiment of the present invention;

[0038] Figure 6 is a top view of an exhaust fan according to an embodiment of the present invention;

[0039] Figure 7 1 is a top view of the air inlet in an embodiment of the present invention.

[0040] 10. Heating chamber; 11. Heat flow inflow chamber; 12. Heat insulation limit chamber; 20. Aerosol substrate; 21. Smoke-generating section; 22. Cooling section; 23. Mouthpiece section; 30. Heating module; 31. Air flow channel; 40. Spoiler; 50. Air intake module; 51. Air intake channel; 52. Exhaust fan; 53. Air inlet; 60. Power module; 70. Control module. DETAILED DESCRIPTION

[0041] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0042] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0045] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0046] Please see the attached Figure 1 As shown, one embodiment of the present invention provides an aerosol generating device comprising a heating chamber 10 and a heating module 30. The heating chamber 10 is used to accommodate an aerosol substrate 20 and heat the aerosol substrate 20 to generate an aerosol. The heating module 30 is disposed below the heating chamber 10. When the aerosol substrate 20 is disposed within the heating chamber 10, its bottom end surface is thermally connected to the heating module 30. The heating module 30 is provided with a plurality of airflow channels 31 communicating with the heating chamber 10. When energized, the heating elements in the heating module 30 are capable of heating air flowing through the airflow channels 31. The heated air then rises into the heating chamber 10 to heat the aerosol substrate 20 disposed therein. Specifically, when the aerosol substrate 20 is disposed within the heating chamber 10, its bottom end surface is thermally connected to the heating module 30, enabling efficient thermal heating of the aerosol substrate 20. In addition, the heating module 30 is provided with a plurality of air flow channels 31 connected to the heating chamber 10. The heating elements in the heating module 30 can heat the air flowing through the air flow channels 31 when powered on. The heated air rises into the heating chamber 10, forming thermal convection, thereby uniformly heating the aerosol substrate 20 placed in the heating chamber 10, so that the aerosol substrate 20 is heated by thermal convection.

[0047] This embodiment disposes a heating module 30 below the heating chamber 10. The heating module 30 is provided with multiple airflow channels 31 communicating with the heating chamber 10. When the aerosol substrate 20 is placed in the heating chamber 10, its bottom end surface is thermally connected to the heating module 30. This arrangement enables the aerosol substrate 20 to be heated simultaneously within the heating chamber 10 by both heat conduction and convection. The heat conduction heating method allows the bottom end surface of the aerosol substrate 20 to rapidly absorb heat, while the convection heating method allows the aerosol substrate 20 to absorb heat uniformly around its circumference. This arrangement optimizes the aerosol heating method and improves the heating efficiency of the aerosol substrate 20 during the heating process through the combined effects of heat conduction and convection. This achieves efficient and uniform aerosol generation, improves the efficiency and quality of aerosol generation, and enhances the user experience.

[0048] Compared to existing internal heating methods, this embodiment utilizes a combination of heat conduction and convection to prevent sugars and other components in the tobacco from adhering to the heating element during heating, thereby reducing cleaning difficulties and making it easier to remove the cigarette from the aerosol generating device after puffing. Compared to existing peripheral heating methods, this embodiment's combined heat conduction and convection achieves efficient and uniform aerosol generation, avoiding the problem of incomplete combustion leading to unpleasant odors in the generated aerosol.

[0049] In some optional embodiments, the bottom of the heating chamber 10 is provided with a spoiler 40 that abuts the heating module 30. When the aerosol substrate 20 is placed in the heating chamber 10, its bottom end surface is thermally connected to the spoiler 40. The spoiler 40 is usually made of a metal material with good thermal conductivity and heat resistance, and can be specifically gold, silver, copper, aluminum, tungsten, etc. Preferably, the material of the spoiler 40 is aluminum alloy or copper to ensure effective heat conduction. The spoiler 40 can be connected to the bottom of the heating chamber 10 by mechanical fixation (such as fastening the spoiler 40 to the bottom of the heating chamber 10 by screws or buckles), thermal bonding (using a high thermal conductive adhesive to firmly bond the spoiler 40 to the bottom of the heating chamber 10) or inlaying (pre-setting a groove at the bottom of the heating chamber 10, and the spoiler 40 can be directly embedded therein). This embodiment improves the distribution of airflow in the heating chamber 10 by providing the spoiler 40. Specifically, the heated air will be guided and dispersed when passing through the spoiler 40, forming a more complex airflow pattern and increasing the degree of airflow mixing. This airflow disturbance helps to ensure that heat is evenly distributed on the outer surface of the aerosol substrate 20, thereby avoiding the occurrence of hot spots and improving the quality of aerosol generation.

[0050] Please see the attached Figure 2 As shown, in some optional embodiments, the heating chamber 10 is provided with a heat flow inlet chamber 11 and a heat-insulating limiting chamber 12 above the spoiler 40. The aerosol substrate 20 includes, axially from bottom to top, a smoke-generating section 21, a cooling section 22, and a mouthpiece section 23. When the aerosol substrate 20 is placed in the heating chamber 10, the smoke-generating section 21 is inserted into the heat flow inlet chamber 11, with its bottom end surface thermally connected to the spoiler 40, while the cooling section 22 is inserted into the heat-insulating limiting chamber 12. It can be explained that the heat flow inlet chamber 11 is primarily used to receive heat from the heating module 30 and transfer the heat-carrying air to the smoke-generating section 21. The heat-insulating limiting chamber 12 is primarily used for thermal isolation, preventing heat from escaping the heating chamber 10, thereby ensuring that the temperature of the mouthpiece section 23 does not rise excessively. The smoke-generating section 21 is the bottommost portion of the cigarette, and heating it releases aerosol. The cooling section 22, located between the smoking section 21 and the mouthpiece section 23, is primarily used to lower the temperature of the aerosol transmitted from the smoking section 21, thereby reducing discomfort and irritation during inhalation. The mouthpiece section 23 is the uppermost portion of the cigarette, typically the part that the smoker directly contacts. It contains an inhalation channel through which the aerosol enters the smoker's oral cavity.

[0051] In some optional embodiments, the height of the heat flow inlet chamber 11 is the same as the height of the smoking segment 21, so that the smoking segment 21 can be just accommodated in the heat flow inlet chamber 11. The shape of the heat flow inlet chamber 11 is adapted to the shape of the smoking segment 21 of the cigarette. For example, the shape of the smoking segment 21 of the cigarette is cylindrical, and the shape of the heat flow inlet chamber 11 is tubular. In some other optional embodiments, when the smoking segment 21 is placed in the heat flow inlet chamber 11, it is located at the center of the heat flow inlet chamber 11. Specifically, the central axis of the smoking segment 21 and the central axis of the heat flow inlet chamber 11 are aligned to form the same straight line. At the same time, there is a gap between the smoking segment 21 and the heat flow inlet chamber 11 in the radial direction. In order to achieve this design, the diameter of the heat flow inlet chamber 11 should be larger than the diameter of the smoking segment 21, but not more than 10 mm of the diameter of the smoking segment 21. By setting a certain gap between the smoking section 21 and the heat flow inlet cavity 11 in the radial direction, the hot air heated by the heating module 30 can be distributed around the smoking section 21, thereby heating the smoking section 21 more fully.

[0052] In some optional embodiments, the height of the cooling section 22 is greater than the height of the heat-insulating limiting cavity 12, so that the mouthpiece section 23 connected to the cooling section 22 can be placed outside the heating cavity 10. The shape of the heat-insulating limiting cavity 12 is adapted to the shape of the cooling section 22 of the cigarette. For example, the shape of the cooling section 22 of the cigarette is cylindrical, and the shape of the heat-insulating limiting cavity 12 is tubular. Specifically, when the cooling section 22 is placed in the heat-insulating limiting cavity 12, it is located at the center of the heat-insulating limiting cavity 12, that is, the central axis of the cooling section 22 and the central axis of the heat-insulating limiting cavity 12 are aligned to form the same straight line. At the same time, there is a gap between the cooling section 22 and the heat-insulating limiting cavity 12 in the radial direction. Specifically, the diameter of the heat-insulating limiting cavity 12 is slightly larger than the diameter of the cooling section 22. This design not only effectively reduces the resistance when the cigarette is inserted into the heating cavity 10, but also ensures the limitation and fixation of the cigarette during use.

[0053] In one specific embodiment, when the cooling section 22 is positioned within the insulating and limiting cavity 12, it is located at the center of the insulating and limiting cavity 12 and has a radial gap with the insulating and limiting cavity 12. When the cigarette is structurally intact, the radial gap between the cooling section 22 and the insulating and limiting cavity 12 is less than or equal to the radial deformation of the cooling section 22 caused by thermal expansion. Specifically, when the aerosol generated by the smoking section 21 is transferred to the cooling section 22, the temperature of the cooling section 22 increases, causing the material within the cooling section 22 to expand due to thermal expansion, thereby increasing the diameter of the cooling section 22. The deformation refers to the radial change in the cooling section 22. By ensuring that the radial gap between the cooling section 22 and the insulating and limiting cavity 12 is less than or equal to the radial deformation of the cooling section 22 caused by thermal expansion, not only does it ensure the fixation and stability of the aerosol substrate 20 during inhalation, it also effectively prevents heat from escaping from the heating cavity 10, thereby improving user comfort.

[0054] In some optional embodiments, the thermal insulation limiting cavity 12 and the heat flow inlet cavity 11 are coaxially arranged, and the inner diameter of the thermal insulation limiting cavity 12 is smaller than the inner diameter of the heat flow inlet cavity 11 .

[0055] Please see the attached Figure 3 As shown, in some optional embodiments, the spoiler 40 is a spiral mosquito coil-like structure made of metal. Specifically, the lower surface of the spoiler 40 is in close contact with the top end surface of the heating module 30, ensuring good heat conduction. The upper surface of the spoiler 40 serves to limit the insertion depth of the aerosol substrate 20 into the heating chamber 10. Furthermore, the heat generated by the heating module 30 is effectively transferred to the bottom end surface of the smoke-generating section 21 through the spiral mosquito coil-like structure.

[0056] Please refer to the attached Figure 4 and attached Figure 5 As shown, in some optional embodiments, the air flow channel 31 of the heating module 30 has a honeycomb structure. Specifically, the air flow channel 31 is composed of a plurality of interconnected hexagonal or square units, forming a highly integrated honeycomb network. The honeycomb structure of the air flow channel 31 allows the air flow to flow freely between the plurality of interconnected units. The design of each unit is intended to maximize the contact area between the gas and the heating surface, thereby improving the heat exchange efficiency. The heating module 30 is made of materials with high electrical conductivity, high thermal conductivity and good heat resistance to ensure that heat is distributed quickly and evenly. The heating module 30 can be made of metal materials (such as gold, silver, copper, aluminum, tungsten, etc.) or non-metallic materials (such as graphene, etc.) to improve the heat exchange efficiency.

[0057] Please refer again to the attached Figure 1As shown, in some optional embodiments, an air intake module 50 is provided below the heating module 30. The air intake module 50 includes an air intake channel 51 connected to the air flow channel 31 and an exhaust fan 52 provided in the air intake channel 51. Driven by the exhaust fan 52, the outside air enters the air flow channel 31 along the air intake channel 51. The air intake channel 51 of the air intake module 50 adopts a streamlined design to reduce air flow resistance and ensure that the air can flow efficiently. One end of the air intake channel 51 is connected to the outside air, and the other end is connected to the air flow channel 31 of the heating module 30. Under the action of the exhaust fan 52, the outside air can effectively enter the air flow channel 31 of the heating module 30 through the air intake channel 51. Please refer to the attached Figure 6 As shown, the exhaust fan 52 can be a one-way exhaust fan. Specifically, the exhaust fan 52 can be a low-noise, high-temperature resistant electric fan that can provide stable suction capacity under different working conditions. The speed of the exhaust fan 52 can be adjusted as needed to meet different heating requirements.

[0058] Please see the attached Figure 7 As shown, in some optional embodiments, the air intake module 50 further includes an air inlet 53, which has a grid-like structure and an adjustable degree of opening. The degree of opening of the grid-like structure directly affects the amount of air entering the air intake channel 51, and the user can flexibly adjust it according to the power of the exhaust fan 52 and the personal suction frequency and depth. By adjusting the opening and closing of the air inlet 53, not only can the heat flow be effectively concentrated, thereby saving energy consumption, but it can also adapt to the user's suction habits and enhance the user's experience. For example, when the exhaust fan 52 is not working and the user is not suctioning, the user can adjust the air inlet 53 by himself to close it, thereby effectively preventing foreign matter and dust from entering the air intake channel 51.

[0059] On the other hand, an embodiment of the present application provides a control method for an aerosol generating device. The aerosol generating device is any of the aerosol generating devices described above, and further includes a power module 60, a control module 70, and an air intake module 50. The air intake module 50 includes an exhaust fan 52. The control method includes:

[0060] The control module 70 continuously monitors the temperature of the smoke-generating section 21 of the aerosol substrate 20 (the monitored temperature value may be fed back to the control module 70 via a high-precision temperature sensor). Based on the monitored temperature, the control module 70 performs the following operations:

[0061] When the temperature exceeds the preset threshold, the power of the exhaust fan 52 is reduced to reduce the airflow to prevent the aerosol substrate 20 from overheating; when the temperature is lower than the preset threshold, the power of the exhaust fan 52 is increased to promote the generation of aerosol.

[0062] It should be noted that the aforementioned preset threshold is a temperature threshold preset in the control module 70. This preset threshold can define a safe temperature range and optimal operating conditions. This preset threshold can be adjusted based on the characteristics of the aerosol substrate 20 to ensure efficient and safe aerosol generation. Furthermore, to further enhance safety, the control module 70 can include a temperature over-limit alarm function. When the temperature exceeds a certain critical value, in addition to reducing the power of the exhaust fan 52, an alarm system is also triggered, alerting the user to the device status and allowing them to take timely action.

[0063] It should be further explained that the power module 60 provides the voltage and current required by each component of the aerosol generating device (including the control module 70, the exhaust fan 52, the heating module 30, etc.) to ensure stable operation of the device.

[0064] The above control method aims to achieve an efficient and safe aerosol generation process by intelligently monitoring the temperature of the aerosol substrate 20 smoke section 21 and dynamically controlling the temperature of the aerosol smoke section 21 by adjusting the power of the exhaust fan 52.

[0065] In some optional embodiments, the air intake module 50 further includes an air intake 53, and the control method further includes:

[0066] The control module 70 monitors the user's behavior and records the user's puff frequency and depth in real time. Based on the user's puff frequency and depth, the control module 70 adjusts the power of the exhaust fan 52, the opening and closing degree of the air inlet 53, and the power of the heating module 30 as follows:

[0067] When the user's puff frequency is high, the power of the exhaust fan 52 is increased to ensure sufficient airflow and aerosol supply. When the user's puff frequency is low, the power of the exhaust fan 52 is reduced to reduce energy consumption. When the user's puff frequency is high, the opening of the air inlet 53 is increased to increase the amount of airflow entering and ensure aerosol supply. When the user takes shallow puffs, the air inlet 53 is appropriately closed to prevent excessive airflow and improve aerosol utilization efficiency. When the user takes deep puffs frequently, the power of the heating module 30 is increased to accelerate aerosol generation and ensure that the user obtains a high-concentration aerosol in a short period of time. When the user's puff frequency is low, the power of the heating module 30 is reduced to save energy and avoid unnecessary energy consumption.

[0068] Through the above control method, the aerosol generating device can dynamically adapt to the user's usage habits and optimize the aerosol generation process, which not only improves the user experience but also effectively improves the energy efficiency and safety of the aerosol generating device.

[0069] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aerosol generating device, characterized in that include: a heating chamber, for placing an aerosol substrate and heating the aerosol substrate to generate an aerosol; A heating module is disposed below the heating chamber. When the aerosol substrate is placed in the heating chamber, its bottom end surface is thermally connected to the heating module. The heating module is provided with a plurality of air flow channels communicating with the heating chamber. When powered, the heating elements in the heating module are capable of heating air flowing through the air flow channels. The heated air rises into the heating chamber to form thermal convection, thereby heating the aerosol substrate placed in the heating chamber. The bottom of the heating chamber is provided with a spoiler that abuts against the heating module. When the aerosol substrate is placed in the heating chamber, the bottom end surface thereof is thermally connected to the spoiler. The heating cavity is provided with a heat flow inlet cavity and a heat insulation limit cavity in sequence above the spoiler; The aerosol substrate includes a smoke generating section, a cooling section and a mouthpiece section in order from bottom to top along the axial direction; When the aerosol substrate is placed in the heating chamber, the smoke-generating section is inserted into the heat flow inflow chamber, and the bottom end surface is thermally connected to the spoiler, and the cooling section is inserted into the heat-insulating limiting chamber; When the cooling section is placed in the thermal insulation limit cavity, it is located at the center of the thermal insulation limit cavity, and there is a gap between the cooling section and the thermal insulation limit cavity in the radial direction. The gap value between the cooling section and the thermal insulation limit cavity in the radial direction is less than or equal to the deformation amount in the radial direction caused by the thermal expansion of the cooling section.

2. The aerosol generating device according to claim 1, wherein The height of the heat flow confluence cavity is the same as the height of the smoking section; And / or, when the smoking section is placed in the heat flow inlet cavity, it is located at the center of the heat flow inlet cavity and there is a gap between the smoking section and the heat flow inlet cavity in the radial direction.

3. The aerosol generating device according to claim 2, wherein: The spoiler is a spiral mosquito coil-like structure made of metal material, and / or the air flow channel is a honeycomb structure.

4. The aerosol generating device according to claim 1, wherein An air intake module is provided below the heating module, and the air intake module includes an air intake channel connected to the air flow channel and an exhaust fan provided in the air intake channel. Under the driving action of the exhaust fan, external air enters the air flow channel along the air intake channel.

5. The aerosol generating device according to claim 4, wherein The air intake module further comprises an air intake, which is in a grid-like structure and has an adjustable opening and closing degree.

6. A method for controlling an aerosol generating device, characterized in that: The aerosol generating device is the aerosol generating device according to any one of claims 1 to 5, and further comprises a power module, a control module and an air intake module, the air intake module comprises an exhaust fan, and the control method comprises: The control module continuously monitors the temperature of the smoking section of the aerosol substrate. Based on the monitored temperature, the control module performs the following operations: When the temperature exceeds a preset threshold, the power of the exhaust fan is reduced to reduce the airflow to prevent the aerosol substrate from overheating; when the temperature is lower than the preset threshold, the power of the exhaust fan is increased to promote the generation of aerosol.

7. The control method of the aerosol generating device according to claim 6, wherein: The air intake module further includes an air intake port, and the control method further includes: The control module monitors the user's behavior and records the user's puff frequency and depth in real time. Based on the user's puff frequency and depth, the control module adjusts the power of the exhaust fan, the opening and closing degree of the air inlet, and the power of the heating module as follows: When the user's puffing frequency is high, the power of the exhaust fan is increased to ensure sufficient airflow and aerosol supply; when the user's puffing frequency is low, the power of the exhaust fan is reduced; When the user takes a deep puff, the opening of the air inlet is increased; when the user takes a shallow puff, the air inlet is appropriately closed; When the user takes a deep breath more frequently, the power of the heating module is increased to speed up the generation of aerosol; when the user takes a deep breath less frequently, the power of the heating module is reduced to save energy.

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