Aerosol generating device and aerosol generating system

Abstract

The embodiments of the present application belong to the technical field of aerosol generating devices, and relate to an aerosol generating device and an aerosol generating system. The aerosol generating device includes a shell, a heating element, a bracket, and an airflow driving mechanism; an airflow channel and a gas heating chamber are provided in the shell, the airflow channel is connected to the outside, the air inlet channel of the gas heating chamber is connected to the airflow channel, and the side wall of the gas heating chamber is provided with air holes, and the gas heating chamber is connected to the airflow channel through the air holes; at least a part of the bracket is arranged in the gas heating chamber, the heating element is arranged in the gas heating chamber, and is located between the air inlet channel of the gas heating chamber and the bracket, the bracket is provided with a accommodating chamber for accommodating aerosol generating products, and the accommodating chamber is connected to the gas heating chamber; the airflow driving mechanism is installed in the gas heating chamber. The technical solution provided by the present application can improve the generation efficiency of aerosol and increase the atomization amount.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generating devices, and more specifically, to an aerosol generating device and an aerosol generating system. Background Art

[0002] An aerosol generating device is a device that heats an aerosol generating substrate in an aerosol generating product to generate aerosol for the user to inhale.

[0003] Existing aerosol generating devices generally achieve heating through direct or indirect solid-solid contact between a heating element and an aerosol generating substrate. This solid-solid contact heating method limits the heating area of ​​the aerosol generating substrate, resulting in a problem in which part of the aerosol generating substrate is overheated while part of the aerosol generating substrate is not heated enough during the heating process.

[0004] In order to avoid the problem of uneven heating of the aerosol generating substrate caused by direct contact heating between the aerosol generating substrate (solid) and the heating element (solid) (or indirect solid-solid contact heating through the heat-conducting structure of other solids), the existing aerosol generating device heats the aerosol generating substrate by heating air, and then the heated air enters the aerosol generating substrate to perform gas-solid contact heating on the aerosol generating substrate, so that the aerosol generating substrate can be heated evenly. However, due to the use of hot air to heat the aerosol generating substrate, during the preheating stage, the hot air easily escapes from the aerosol generating product, causing heat loss, thereby failing to preheat the aerosol generating substrate, resulting in low power utilization. Summary of the Invention

[0005] The technical problem to be solved by the embodiments of the present application is that the existing aerosol generating device does not preheat the aerosol generating device properly, resulting in low power utilization.

[0006] In order to solve the above technical problems, the present application provides an aerosol generating device, which adopts the following technical solutions:

[0007] The aerosol generating device comprises a housing, a heating element, a bracket and an airflow driving mechanism;

[0008] An air flow channel and a gas heating chamber are provided in the shell, the air flow channel is communicated with the outside, the air inlet channel of the gas heating chamber is communicated with the air flow channel, and an air vent is provided on the side wall of the gas heating chamber, and the gas heating chamber is communicated with the air flow channel through the air vent;

[0009] At least a portion of the bracket is disposed in the gas heating chamber, the heating element is disposed in the gas heating chamber and is located between an air inlet passage of the gas heating chamber and the bracket, the bracket is provided with a receiving chamber for receiving an aerosol-generating article, and the receiving chamber is in communication with the gas heating chamber;

[0010] The airflow driving mechanism is installed in the gas heating chamber, and is used to drive air from the airflow channel into the gas heating chamber, and make the air in the gas heating chamber pass through the heating element and the bracket in turn, and then be discharged from the air vent to the airflow channel.

[0011] Furthermore, the airflow driving mechanism is a fan, the air inlet channel of the gas heating chamber is located on the air inlet side of the fan, and the bracket is arranged on the air outlet side of the fan.

[0012] Furthermore, it also includes a one-way ventilation structure, the shell is provided with an air inlet, the air flow channel is connected to the outside world through the air inlet, the one-way ventilation structure is arranged on the air flow channel in the area between the air inlet and the air vent, or the one-way ventilation structure is arranged on the air inlet.

[0013] Furthermore, the one-way ventilation structure is an air path one-way valve.

[0014] Furthermore, it also includes a control module and a power supply component, both of which are arranged in the shell, the control module is connected to the power supply component, and the control module is connected to the heating element and the gas drive mechanism.

[0015] Furthermore, the bracket is made of heat-conducting material.

[0016] Furthermore, an air inlet is provided at one end of the bracket close to the airflow driving mechanism, and an air vent is provided on the side wall of the bracket. The accommodating cavity is connected to the gas heating cavity through the air inlet and the air vent, so that the air in the gas heating cavity enters the aerosol generating substrate in the accommodating cavity from the air inlet and is then discharged from the air vent to the gas heating cavity.

[0017] In order to solve the above technical problems, the present application also provides an aerosol generating system, which adopts the following technical solutions:

[0018] The aerosol generating system, the aerosol generating article and the aerosol generating device as described in any of the above schemes, the aerosol generating article can be inserted into the bracket of the aerosol generating device.

[0019] Furthermore, the aerosol generating product includes an aerosol generating substrate, a filter tip, and a transition layer arranged between the aerosol generating substrate and the filter tip, the transition layer is arranged downstream of the aerosol generating substrate, and the filter tip is arranged downstream of the transition layer. When the aerosol generating product is inserted into the bracket of the aerosol generating device, the aerosol generating substrate is fitted with the bracket located between the air vent and the heating element.

[0020] Furthermore, the transition layer is a cooling layer.

[0021] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0022] In the embodiment of the present application, air holes are provided on the side wall of the gas heating chamber and an air flow driving mechanism is provided in the gas heating chamber, so that the air can be heated by the heating element under the drive of the air flow driving mechanism when not subject to external suction, and then circulate in the air flow channel and the gas heating chamber. During the circulation process, the hot air transfers heat to the bracket to preheat the aerosol generating product in the bracket. Through the heat transfer between the hot air and the bracket and the circulation of the hot air, the air is prevented from flowing out of the aerosol generating substrate after being heated, thereby reducing heat loss. The aerosol generating substrate in the aerosol generating product can reach the preheating temperature more quickly, so that the aerosol generating substrate can be quickly preheated to the desired temperature, thereby improving the preheating efficiency of the aerosol generating substrate and improving the utilization rate of electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the solution of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 1 is a schematic structural diagram of the aerosol generating device and aerosol generating product according to the first embodiment of the present invention;

[0025] Figure 2 2 is a schematic structural diagram of an aerosol generating device and an aerosol generating product according to a second embodiment of the present invention, showing a state when a user inhales the aerosol, with arrows indicating the direction of air flow;

[0026] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0027] Figure 4 yes Figure 2The aerosol generating device is shown in a state when the user stops inhaling the aerosol, and the arrows in the figure indicate the direction of air flow;

[0028] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0029] Figure 6 Schematic diagram of the structure of the aerosol generating product described in Example 3 of the present invention.

[0030] Reference numerals:

[0031] 100. Aerosol generating device; 110. Shell; 111. Air flow channel; 112. Gas heating chamber; 1121. Air inlet channel; 113. Air vent; 114. Air inlet; 115. One-way ventilation structure; 120. Heating element; 130. Bracket; 140. Air flow drive mechanism; 150. Control module; 160. Power supply assembly; 170. One-way ventilation structure; 200. Aerosol generating product; 210. Aerosol generating substrate; 220. Transition layer; 230. Filter tip. DETAILED DESCRIPTION

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0033] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] See Figures 1 to 6 , Figure 1 The aerosol generating device described in Example 1 of the present application; Figures 2 to 5 The aerosol generating device described in Example 2 of the present application; Figure 6 This is the aerosol generating product described in Example 3 of this application.

[0035] The present invention provides an aerosol generating device. Figure 1 , which is Example 1 of the present application, an aerosol generating device 100 includes a housing 110, a heating element 120, a bracket 130, and an airflow driving mechanism 140. An airflow channel 111 and a gas heating chamber 112 are provided within the housing 110. The airflow channel 111 communicates with the outside world, and a vent 113 is provided on the sidewall of the gas heating chamber 112. The gas heating chamber 112 communicates with the airflow channel 111 through the vent 113.

[0036] At least a portion of the bracket 130 is arranged in the gas heating chamber 112, the heating element 120 is arranged in the gas heating chamber 112, and the heating element 120 is located between the air inlet channel 1121 of the gas heating chamber 112 and the bracket 130, and the bracket 130 is provided with a accommodating chamber for accommodating the aerosol generating product 200, and the accommodating chamber is connected to the gas heating chamber 112.

[0037] When the air in the gas heating chamber 112 is not subjected to external suction, it is heated by the heating element 120 and then enters the air flow channel 111 through the air vents 113 . At least a portion of the bracket 130 is located between the air vents 113 and the heating element 120 .

[0038] The airflow driving mechanism 140 is installed in the gas heating chamber 112. The airflow driving mechanism 140 is used to drive air from the gas channel 111 into the gas heating chamber 112, and make the air in the gas heating chamber 112 pass through the heating element 120 and the bracket 130 in turn, and then be discharged from the air vent 113 to the airflow channel 111.

[0039] It can be understood that the working principle of the aerosol generating device 100 is as follows:

[0040] When a user inhales an aerosol, the user applies suction to the aerosol-generating substrate 210. External air is drawn into the airflow channel 111 under the action of the external suction. The air then flows from the airflow channel 111 to the air inlet channel 1121 of the gas heating chamber 112, and enters the gas heating chamber 112 through the air inlet channel 1121 of the gas heating chamber 112. The heating element 120 within the gas heating chamber 112 heats the air, forming hot air. Under the action of the external suction, the hot air enters the aerosol-generating article 200 located in the receiving chamber, heating the aerosol-generating substrate 210 within the aerosol-generating article 200. This heats the aerosol-generating substrate 210, forming an aerosol. The air is then discharged from the aerosol-generating article 200 under the action of the suction for inhalation by the user.

[0041] When the aerosol generating substrate is in the preheating stage, the user does not apply suction to the aerosol generating product. Under the driving action of the airflow drive mechanism 140, the air enters the gas heating chamber 112 from the airflow channel 111. After passing through the heating element 120 in the gas heating chamber 112, it is heated to form hot air. The hot air is then blown toward the bracket 130. The hot air transfers heat to the bracket 130, causing the temperature of the bracket 130 to rise. The bracket 130 contacts the aerosol generating substrate, thereby further transferring heat to the aerosol generating substrate, thereby preheating the aerosol generating substrate. At the same time, the hot air blown through the bracket 130 is discharged from the air vent 113 to the airflow channel 111, and then re-enters the gas heating chamber 112 under the drive of the airflow drive mechanism 140, realizing the circulation of hot air. During this process, driven by the airflow driving mechanism 140, air can circulate between the gas heating chamber 112 and the airflow channel 111, preventing the air from flowing out of the aerosol generating substrate after being heated, reducing heat loss, and achieving rapid preheating of the aerosol generating substrate.

[0042] Compared with the existing technology, the aerosol generating device has at least the following technical effects:

[0043] The aerosol generating device provided in the embodiment of the present application, by providing air vents 113 in the sidewalls of the gas heating chamber 112 and disposing an airflow drive mechanism within the gas heating chamber 112, allows air to be heated by the heating element 120 under the drive of the airflow drive mechanism 140 when not subject to external suction, and then circulates through the airflow channel 111 and the gas heating chamber 112. During this circulation process, the aerosol generating product 200 within the bracket 130 is preheated. Heat transfer between the hot air and the bracket 130, as well as the circulation of the hot air, prevents the heated air from flowing out of the aerosol generating substrate, reducing heat loss. The aerosol generating substrate 210 in the aerosol generating product 200 can reach the preheating temperature more quickly, allowing the aerosol generating substrate to be preheated quickly, improving the preheating efficiency of the aerosol generating substrate, and increasing the utilization rate of electrical energy.

[0044] It can be understood that the air inlet channel 1121 of the gas heating chamber 112 is located at the bottom of the gas heating chamber 112, and the air vent 113 is located on the side wall of the gas heating chamber 112, that is, the height of the air vent 113 is higher than the air inlet channel 1121 of the gas heating chamber 112, and the heating element 120 is located between the air vent 113 and the air inlet channel 1121 of the gas heating chamber 112, so that the air is driven by the airflow driving mechanism 140 to pass through the heating element 120 for heating, and then passes through the bracket 130 and is discharged from the air vent 113 into the airflow channel 111, thereby promoting gas circulation.

[0045] In this embodiment, the air flow driving mechanism 140 is a fan, the air inlet channel 1121 of the gas heating chamber 112 is located on the air inlet side of the fan, and the heating element 120 is arranged on the air outlet side of the fan.

[0046] It is understandable that, driven by the fan, the air is heated by the heating element and then blown toward the bracket 130. When the user inhales, the hot air can be sucked into the accommodating cavity of the bracket 130. When the user is not inhaling, the hot air can be blown toward the bracket 130 and discharged from the air vent 113 after passing through the bracket 130, thereby preventing the air from flowing back from the air vent 113. The air inlet side of the fan acts as a suction device. Driven by the fan, the air in the air flow channel 111 can enter the gas heating chamber 112 from the air inlet channel 1121 of the gas heating chamber 112, so that the hot air discharged from the air vent 113 into the air flow channel 111 can be re-sucked into the gas heating chamber 112 by the fan, thereby forming a circulating flow of hot air and preventing the hot air from flowing from the aerosol generating product to the outside world and causing heat loss. Air entering the gas heating chamber 112 is heated by the heating element 120 and then blown toward the bracket 130. The hot air contacts the bracket 130, transferring some of the heat to the bracket 130, thereby preheating the aerosol generating substrate within the bracket 130. In this embodiment, a fan is provided to drive the air flow, allowing the air to flow in a predetermined direction.

[0047] In this embodiment, the heating element 120 and the bracket 130 are both located on the air outlet side of the fan, and the fan is arranged on the side of the heating element 120 away from the bracket 130, so that the air blown by the fan can flow through the heating element 120 and the bracket 130 in sequence. In other embodiments, the fan can also be arranged between the heating element 120 and the bracket 130, that is, the heating element 120 is arranged on the air inlet side of the fan, and the bracket 130 is arranged on the air outlet side of the fan.

[0048] See Figures 2 to 5 This is the second embodiment provided by the present application. In this embodiment, the aerosol generating device 100 further includes a one-way vent structure 115. The housing 110 is provided with an air inlet 114. The air flow channel 111 communicates with the outside world through the air inlet 114. The one-way vent structure 170 is disposed in the air flow channel in the area between the air inlet 114 and the air vent 113. In this embodiment, the one-way vent structure 170 is an air path one-way valve. Specifically, the one-way vent structure 115 is used to prevent hot air from being discharged from the air vent and then flowing back through the air flow channel 111 to the outside world.

[0049] The embodiment of the present application provides a one-way ventilation structure 170 at the air inlet 114, allowing air to enter the airflow channel 111 from the outside and preventing it from flowing back out to the outside environment through the air inlet 114. This ensures that hot air does not leak out during the heat cycle, thereby preventing heat loss from the air within the housing 110. When a user inhales an aerosol, suction is applied to the aerosol-generating article 200. Under the action of the suction, the hot air within the gas heating chamber 112 is drawn into the aerosol-generating article 200, causing the air pressure within the airflow channel 111 and the gas heating chamber 112 to be lower than the external air pressure. Due to the pressure difference, the air can pass through the air path one-way valve into the airflow channel 111 and then into the gas heating chamber 112. When the user stops inhaling the aerosol, the air pressure in the airflow channel 111 and the gas heating chamber 112 within the housing 110 equals the external air pressure, allowing air to circulate in the airflow channel 111 and the gas heating chamber 112. In this embodiment, the air flow channel 111 includes an air inlet section located between the air inlet 114 and the air vent 113. The one-way vent structure 115 is located on the air inlet section and is positioned adjacent to the air inlet 114. In other embodiments, the one-way valve can be positioned anywhere on the air inlet section, as long as it prevents air from flowing out of the air vent 113.

[0050] In some other embodiments, the one-way ventilation structure 115 may also be provided on the air inlet 114 .

[0051] In one embodiment, a gas path one-way valve can also be provided on the air vent 113 so that the gas can only be discharged from the gas heating chamber 112 to the air flow channel 111 through the air vent, thereby preventing the unheated air entering from the outside from flowing back into the gas heating chamber 112 through the air vent 113.

[0052] In some embodiments, the airflow channel 111 and the gas heating chamber 112 may be integrally formed within the housing 110 to form two separate gas flow spaces, or they may be installed within the housing 110 via a hardware structure to separate the interior of the housing 110 into two gas flow spaces. This application does not specifically limit the configuration of the airflow channel 111 and the gas heating chamber 112.

[0053] In one embodiment, the aerosol generating device further includes a control module 150 and a power supply assembly 160. Both the control module 150 and the power supply assembly 160 are disposed within the housing 110. The control module 150 is connected to the power supply assembly 160, which is in turn connected to the heating element 120 and the gas drive mechanism. The power supply assembly 160 is used to supply power to the heating element 120 and the gas drive mechanism. The control module 150 is used to control the on and off of the heating element 120 and the gas drive mechanism.

[0054] In one embodiment, the aerosol generating device further includes a temperature sensor (not shown) disposed between the bracket 130 and the heating element 120 for detecting the temperature of air entering the bracket 130 after being heated by the heating element. The temperature sensor is connected to a control module 150, which is configured to regulate the power output to the heating element 120 based on the air temperature, thereby adjusting the temperature of the heating element 120.

[0055] In one embodiment, the bracket 130 is made of a heat-conducting material. In this embodiment, the portion of the bracket 130 located in the gas heating chamber 112 is made of a heat-conducting material.

[0056] In one embodiment, an air inlet is provided at one end of the bracket close to the air flow driving mechanism, and an air vent is provided on the side wall of the bracket. The accommodating chamber is connected to the gas heating chamber through the air inlet and the air vent, so that the air in the gas heating chamber enters the aerosol generating substrate in the accommodating chamber from the air inlet and is then discharged from the air vent to the gas heating chamber. On the one hand, the hot air can transfer heat to the aerosol generating substrate through the solid contact of the bracket to achieve preheating. On the other hand, the hot air can also enter the aerosol generating substrate from the air inlet and be discharged from the air vent, thereby achieving gas contact preheating of the aerosol generating substrate. Furthermore, the air vent can be arranged corresponding to the air permeable hole, so that after the gas is discharged from the air vent, it is directly discharged from the air permeable hole into the air flow channel.

[0057] It can be understood that in order to cooperate with the air vents on the side walls of the bracket to achieve the circulation of hot air during preheating, corresponding air vents can also be provided on the side walls of the aerosol generating substrate, or the side walls of the corresponding areas of the aerosol generating substrate can be made of breathable material to facilitate the entry of hot air from the aerosol generating substrate into the air vents on the side walls of the bracket.

[0058] Specifically, the bottom of the bracket 130 is located in the gas heating chamber 112, and the top of the bracket 130 is connected to the shell 110. The accommodating chamber of the bracket 130 is provided with a heat-conducting section at one end near the bottom of the bracket 130. The side wall of the heat-conducting section of the accommodating chamber is made of a material with good thermal conductivity such as ceramic or metal. The side wall of the heat-conducting section of the accommodating chamber is located between the heating element 120 and the air vent 113. After the air is heated by the heating element 120, it contacts the side wall of the heat-conducting section of the accommodating chamber and is discharged from the air vent 113 to the air flow channel 111. The side wall of the heat-conducting section of the accommodating chamber can exchange heat with the hot air. The temperature of the side wall of the heat-conducting section of the accommodating chamber increases, so that the aerosol generating substrate 210 located in the accommodating chamber contacts the side wall of the preheating section of the accommodating chamber to achieve preheating. During the user's inhalation process, the heat-conducting section can also achieve auxiliary heating of the aerosol generating substrate by contacting the aerosol generating substrate.

[0059] It should be noted that the bracket portion located in the gas containing chamber is the bracket portion that contains the aerosol generating substrate.

[0060] In some embodiments, the bracket 130 may be fixedly installed inside the housing, or may be detachably installed inside the housing to facilitate replacement of the bracket 130 .

[0061] Based on the above-mentioned aerosol generating device 100, an embodiment of the present application further provides an aerosol generating system, which includes an aerosol generating article 200 and an aerosol generating device 100 as described in any of the above-mentioned embodiments. The aerosol generating article 200 can be inserted into the bracket 130 of the aerosol generating device 100.

[0062] See Figure 6 , which is the third embodiment provided by the present invention. In this embodiment, the aerosol generating product 200 includes an aerosol generating substrate 210, a filter tip 230, and a transition layer 220 arranged between the aerosol generating substrate 210 and the filter tip 230. The transition layer 220 is arranged downstream of the aerosol generating substrate 210, and the filter tip 230 is arranged downstream of the transition layer 220. When the aerosol generating product is inserted into the bracket 130 of the aerosol generating device 100, the aerosol generating substrate 210 is in contact with the bracket 130 located between the air vent 113 and the heating element 120.

[0063] Specifically, after the aerosol generating substrate 210 is in contact with the side wall of the preheating section of the accommodating cavity, the heat of the side wall of the preheating section of the accommodating cavity can be conducted into the aerosol generating substrate 210 to heat the aerosol generating substrate 210, thereby achieving the advance preheating of the aerosol generating substrate 210 when the user is not inhaling.

[0064] In this embodiment, the transition layer 220 is a cooling layer. Specifically, a cooling element is provided in the cooling layer to cool the aerosol flowing out of the aerosol generating substrate 210.

[0065] In some other embodiments, a fragrance capsule is provided in the transition layer 220 so that when the aerosol flows through the transition layer 220 , the fragrance capsule can release fragrance into the aerosol, so that the aerosol has different fragrances to meet the taste requirements of different users.

[0066] Obviously, the embodiments described above are only some of the embodiments of the present application, rather than all of the embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present application specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present application.

Claims

1. An aerosol generating device, characterized in that include: Shell, heating element, bracket and air flow driving mechanism; An air flow channel and a gas heating chamber are provided in the shell, the air flow channel is communicated with the outside, the air inlet channel of the gas heating chamber is communicated with the air flow channel, and an air vent is provided on the side wall of the gas heating chamber, and the gas heating chamber is communicated with the air flow channel through the air vent; At least a portion of the bracket is disposed in the gas heating chamber, the heating element is disposed in the gas heating chamber and is located between an air inlet passage of the gas heating chamber and the bracket, the bracket is provided with a receiving chamber for receiving an aerosol-generating article, and the receiving chamber is in communication with the gas heating chamber; The airflow driving mechanism is installed in the gas heating chamber, and is used to drive air from the airflow channel into the gas heating chamber, and make the air in the gas heating chamber pass through the heating element and the bracket in sequence, and then be discharged from the air vent to the airflow channel; The airflow driving mechanism is a fan, the air inlet channel of the gas heating chamber is located on the air inlet side of the fan, and the bracket is arranged on the air outlet side of the fan; It also includes a one-way ventilation structure, the shell is provided with an air inlet, the air flow channel is connected to the outside world through the air inlet, the one-way ventilation structure is arranged on the air flow channel in the area between the air inlet and the air vent, or the one-way ventilation structure is arranged on the air inlet.

2. The aerosol generating device according to claim 1, wherein The one-way ventilation structure is an air path one-way valve.

3. The aerosol generating device according to claim 1, wherein It also includes a control module and a power supply component, both of which are arranged in the shell, and the control module is connected to the power supply component, and the control module is connected to the heating element and the gas driving mechanism.

4. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The bracket is made of heat-conducting material.

5. The aerosol generating device according to any one of claims 1 to 3, characterized in that: An air inlet is provided at one end of the bracket close to the airflow driving mechanism, and an air vent is provided on the side wall of the bracket. The accommodating cavity is connected with the gas heating cavity through the air inlet and the air vent, so that the air in the gas heating cavity enters the aerosol generating substrate in the accommodating cavity from the air inlet and is then discharged into the gas heating cavity from the air vent.

6. An aerosol generating system, characterized in that The invention comprises an aerosol-generating article and an aerosol-generating device according to any one of claims 1 to 5, wherein the aerosol-generating article can be inserted into a bracket of the aerosol-generating device.

7. The aerosol generating system according to claim 6, wherein: The aerosol generating product includes an aerosol generating substrate, a filter tip, and a transition layer arranged between the aerosol generating substrate and the filter tip. The transition layer is arranged downstream of the aerosol generating substrate, and the filter tip is arranged downstream of the transition layer. When the aerosol generating product is inserted into the bracket of the aerosol generating device, the aerosol generating substrate is fitted with the bracket located between the air vent and the heating element.

8. The aerosol generating system according to claim 7, wherein: The transition layer is a temperature-lowering layer.

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