Aerosol-generating device and aerosol-generating system
By designing the guide hole section and the flared hole section in the aerosol generation device, the problem of insufficient flue gas in the tobacco heating area under low oxygen state is solved, and the uniform distribution and taste of the aerosol are achieved.
Patent Information
- Application Number
- CN202420700882.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-08
AI Technical Summary
In the low oxygen state, the heating of the equipment cannot naturally produce smoke in the heating area of the tobacco wire, or the part of the tobacco wire is sealed too high, and no smoke enters the bottom of the tobacco wire, which makes it difficult to extract the smoke, especially when the first few mouths are absorbed , defects of small smoke, large absorption resistance and poor taste.
An aerosol generation device is designed, including a housing and a cover plate, with a storage cavity in the housing, and the cover plate has a guide hole section and a flared hole section. The cross-sectional area of the guide hole section is gradually reduced, and the guide The pore section is in communication with the storage chamber to ensure that the airflow is guided to the bottom of the aerosol-generated product, forming sufficient negative pressure to promote the intake of the aerosol.
Through the design of the guide hole section and the flared hole section, it is ensured that the aerosol-generated product has sufficient airflow, and the user can form sufficient negative pressure when sucking, resulting in uniform distribution of the aerosol, uniform taste, and consistent front and back.
Smart Images
Figure CN222303094U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of aerosol generating equipment, and in particular to an aerosol generating device and an aerosol generating system. Background Art
[0002] An aerosol-generating device may heat an aerosol-generating article without burning it to produce an aerosol.
[0003] The aerosol generating device has a receiving cavity for inserting the aerosol generating product. The aerosol generating product is generally cylindrical. The shape of the receiving cavity generally corresponds to the shape of the aerosol generating product and is also cylindrical. The aerosol generating product includes a filter section, a cooling section, a filter rod section and a solid matrix section. The filter rod section is provided with a side air inlet. In the previous scheme, the side air inlet of the aerosol generating product is located outside the receiving cavity.
[0004] In the prior art, under low oxygen conditions, heating without burning devices cannot naturally generate smoke in the tobacco heating area, or the tobacco part of the cigarette is sealed too high, and no smoke enters the bottom of the cigarette, resulting in difficulty in smoke extraction, especially during the first few puffs, resulting in defects such as small smoke volume, large inhalation resistance and poor taste. Summary of the invention
[0005] The utility model provides an aerosol generating device to solve the problems in the prior art that, under low oxygen conditions, the heat-not-burn device cannot generate smoke naturally in the tobacco heating area, or the tobacco part of the cigarette is sealed too high, so that no smoke enters the bottom of the cigarette, resulting in difficulty in smoke extraction, especially small smoke volume, large inhalation resistance and poor taste during the first few puffs.
[0006] The present application provides an aerosol generating device, comprising: a shell, wherein a storage cavity for storing an aerosol generating product is provided in the shell; and a cover plate, wherein the cover plate is mounted on the shell, the cover plate having an insertion hole for inserting the aerosol generating product, the insertion hole comprising a guide hole section, wherein the cross-sectional area of the guide hole section gradually decreases in the direction in which the aerosol generating product enters the storage cavity, the guide hole section is communicated with the storage cavity, and at the position where the guide hole section is communicated with the storage cavity, the cross-sectional area of the guide hole section is greater than the cross-sectional area of the storage cavity.
[0007] According to an aerosol generating device provided by the present application, the ratio of the bottom air intake volume to the total flow rate of the aerosol generating product is less than or equal to 25%.
[0008] According to an aerosol generating device provided by the present application, the distance between the inner wall of the storage cavity and the outer peripheral wall of the aerosol generating product is L1, and the minimum value range of L1 is L1 greater than or equal to 0.05 mm, and / or the minimum value range of L1 is L1 less than or equal to 0.15 mm.
[0009] According to an aerosol generating device provided in the present application, the cover plate includes a first cover plate and a second cover plate, the first cover plate has a flared hole section, the guide hole section is arranged on the second cover plate, the guide hole section is connected to the flared hole section, and the cross-sectional area of the flared hole section is larger than the cross-sectional area of the guide hole section.
[0010] According to an aerosol generating device provided by the present application, a first seal is provided between the first cover plate and the second cover plate, and the first seal includes a first convex portion, and the first convex portion clamps the aerosol generating product.
[0011] According to an aerosol generating device provided by the present application, there are a plurality of first protrusions, and the plurality of first protrusions are spaced apart along the circumferential direction of the aerosol generating product.
[0012] According to an aerosol generating device provided in the present application, the aerosol generating product is provided with a side air inlet, the line between the center of the first convex portion and the center of the side air inlet hole is the first line, the projection line of the first line in the direction in which the aerosol generating product enters the storage cavity is the second line, and the value of the second line is 0.5mm-3mm.
[0013] According to an aerosol generating device provided by the present application, the distance between the inner wall of the expanded hole section and the outer peripheral wall of the aerosol generating product is L2, and the minimum value range of L2 is L2 greater than or equal to 0.5 mm; and / or the minimum value range of L2 is L2 less than or equal to 5.0 mm.
[0014] According to an aerosol generating device provided in the present application, a second seal is provided between the cover plate and the shell, and the inner diameter of the second seal is larger than the inner diameter of the inner wall of the storage cavity, and the difference is 0.05mm-0.50mm.
[0015] An aerosol generating device provided in the present application further includes a heating tube, wherein the heating tube is arranged in the shell, and the inner wall of the heating tube constitutes the inner wall of the storage cavity.
[0016] The present application also provides an aerosol generating system, comprising:
[0017] an aerosol generating device, wherein the aerosol generating device is the aerosol generating device as described above;
[0018] An aerosol generating product is inserted into the storage cavity of the aerosol generating device. The aerosol generating product is provided with a side air inlet hole, and the side air inlet hole is located in the insertion hole.
[0019] According to the aerosol generating device and aerosol generating system provided by the present application, by providing the guide hole segment, the guide hole segment can guide the airflow to the bottom of the aerosol generating product, so that the bottom of the aerosol generating product can obtain a sufficient amount of airflow. When the user inhales the proximal end, a sufficiently large negative pressure can be formed inside the aerosol generating product, so that the aerosol generated at the bottom of the aerosol generating product can be sucked to the proximal position under the action of the negative pressure, so that the user can obtain an aerosol with uniform taste and consistency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.
[0021] Figure 1 A schematic diagram of an aerosol generating device according to an embodiment of the present application;
[0022] Figure 2 A schematic diagram of an aerosol generating device according to an embodiment of the present application;
[0023] Figure 3 for Figure 2 A partial enlarged view of
[0024] Figure 4 A schematic diagram of an aerosol generating device according to an embodiment of the present application;
[0025] Figure 5 A schematic diagram of an aerosol generating article according to one embodiment of the present application;
[0026] Figure 6 A schematic diagram of a first sealing member according to an embodiment of the present application;
[0027] Figure 7 A schematic diagram of a cover plate according to an embodiment of the present application;
[0028] Figure 8 Air pressure distribution diagram of an aerosol-generating article according to one embodiment of the present application.
[0029] In the figure:
[0030] 10. Aerosol generating device;
[0031] 1. Shell; 11. Storage cavity;
[0032] 2. Cover plate; 21. Insertion hole; 211. Guide hole end; 212. Expanded hole section; 22. First cover plate; 23. Second cover plate; 24. First groove; 25. Second groove; 261. Insulation pipe stop surface; 262. First sealing member positioning surface;
[0033] 3. The first sealing member;
[0034] 4. Second sealing member;
[0035] 5. Heating tube;
[0036] 6. Circuit board assembly;
[0037] 7. Battery components;
[0038] 20. Aerosol-generating products;
[0039] 201, filter tip section; 202, cooling section; 203, filter rod section; 2031, side air inlet; 204, solid matrix section. DETAILED DESCRIPTION
[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0041] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or suggesting the quantity or order of the indicated technical features relative to importance or implicitly indicating. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship or movement between the components under a certain specific posture (as shown in the accompanying drawings), and if the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or equipment comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.
[0042] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0043] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be one or more central elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0044] An embodiment of the present application provides an aerosol generating device 10 including a housing 1 and a cover plate 2 .
[0045] Specifically, a storage chamber 11 for storing the aerosol generating product 20 is provided in the housing 1. The cover plate 2 is mounted on the housing 1, and the cover plate 2 has an insertion hole 21 for inserting the aerosol generating product 20. It can be understood that the aerosol generating product 20 can be inserted into the storage chamber 11 through the insertion hole 21. The insertion hole 21 includes a guide hole section 211, and the cross-sectional area of the guide hole section 211 gradually decreases in the direction in which the aerosol generating product 20 enters the storage chamber 11. The guide hole section 211 is connected to the storage chamber 11, and the cross-sectional area of the guide hole section 211 is greater than the cross-sectional area of the storage chamber 11 at the position where the guide hole section 211 is connected to the storage chamber 11.
[0046] It should be noted that the part of the aerosol generating product 20 close to the user's mouth can be understood as the proximal end, and the other end is the distal end. After the aerosol generating product 20 is inserted into the storage chamber 11 of the aerosol generating device 10, the proximal end is located outside the storage chamber 11, and the distal end is located at the bottom of the storage chamber 11. By providing the guide hole section 211, the guide hole section 211 can guide the airflow to the bottom of the aerosol generating product 20, so that the bottom of the aerosol generating product 20 can obtain a sufficient amount of airflow. When the user inhales the proximal end, a sufficiently large negative pressure can be formed inside the aerosol generating product 20, so that the aerosol generated at the bottom of the aerosol generating product 20 can be sucked to the proximal position under the action of the negative pressure, so that the user can obtain an aerosol with uniform taste and consistency.
[0047] According to the aerosol generating device 10 of the embodiment of the present application, by providing a guide hole section 211 with a gradually decreasing cross-sectional area on the cover plate 2, and the cross-sectional area of the guide hole section 211 is larger than the cross-sectional area of the storage chamber 11, the guide hole section 211 can guide the airflow to the bottom of the aerosol generating product 20, so that the bottom of the aerosol generating product 20 can obtain a sufficient amount of airflow. When the user inhales the proximal end, a sufficiently large negative pressure can be formed at the bottom of the aerosol generating product 20, so that the aerosol generated at the bottom of the aerosol generating product 20 can be sucked to the proximal position under the action of the negative pressure, so that the user can obtain an aerosol with a uniform taste and consistency.
[0048] In one embodiment of the present application, the cover plate 2 includes a first cover plate 22 and a second cover plate 23, and the insertion hole 21 includes a flared hole section 212, the flared hole section 212 is provided on the first cover plate 22, and the guide hole section 211 is provided on the second cover plate 23, the guide hole section 211 is connected to the flared hole section 212, and the cross-sectional area of the flared hole section 212 is greater than the cross-sectional area of the guide hole section 211. In one embodiment of the present application, the cross-sectional area of the flared hole section 212 is greater than the cross-sectional area of the guide hole end 211, and the cross-sectional area of the flared hole section 212 remains substantially the same in the direction in which the aerosol generating article 20 enters the storage chamber 11. In one embodiment of the present application, the opening of the guide hole section 211 of the second cover plate 23 close to the first cover plate 22 is greater than the opening away from the first cover plate 22.
[0049] In one embodiment of the present application, the distance between the inner wall of the storage chamber 11 and the outer wall of the aerosol generating article 20 is L1, and the minimum value of L1 is in the range of L1 greater than or equal to 0.05 mm, and / or the minimum value of L1 is in the range of L1 less than or equal to 0.15 mm. In one embodiment of the present application, the distance L1 between the inner wall of the storage chamber 11 and the outer wall of the aerosol generating article 20 is greater than or equal to 0.05 mm and less than or equal to 0.15 mm, at which time the aerosol generating article 20 provides a relatively closed heating environment to generate smoke in a low oxygen state. In addition, when L1 is greater than or equal to 0.05 mm and less than or equal to 0.15 mm, the distance between the aerosol generating product 20 and the storage chamber 11 can be maintained within a reasonable range, and an appropriate amount of airflow can enter the aerosol generating product 20 from the bottom of the aerosol generating product 20, so that the aerosol generated at the bottom of the aerosol generating product 20 can be sucked to the proximal position under the action of negative pressure, so that the user can get an aerosol with uniform taste and consistent front and back. In some preferred embodiments of the present application, the distance L1 between the inner wall of the storage chamber 11 and the outer peripheral wall of the aerosol generating product 20, L1 can be 0.05 mm, 0.08 mm, 0.10 mm, 0.12 mm or 0.15 mm.
[0050] In one embodiment of the present application, the ratio of the bottom air intake of the aerosol generating product 20 to the total flow is less than or equal to 25%, so that the bottom air intake of the aerosol generating product 20 accounts for a small proportion of the total flow. In one embodiment of the present application, when the distance L1 between the inner wall of the storage chamber 11 and the outer peripheral wall of the aerosol generating product 20 is greater than or equal to 0.05mm and less than or equal to 0.15mm, at this time, the aerosol generating product 20 basically works under low oxygen conditions, and the plugging resistance of the aerosol generating product 20 is relatively large, generally greater than 3000Pa. At this time, the ratio of the bottom air intake to the total flow obtained by simulation is less than or equal to 25%. A suction resistance tester is used to simulate the user inhaling the aerosol generating product 20. When the air flow rate is 55ml / 2s and the inhalation is performed once every 20s, the air intake flow of the aerosol generating product 20 under different suction resistances is obtained as shown in Table 1. The blocked hole suction resistance is the suction resistance after the side air inlet 2031 of the aerosol generating product 20 is blocked, and the open hole suction resistance is the suction resistance when the side air inlet 2031 of the aerosol generating product 20 is in an open state. It can be seen from Table 1 that under low oxygen conditions, the ratio of the bottom air intake of the aerosol generating product 20 to the total flow is less than or equal to 25%, the bottom air intake of the aerosol generating product 20 accounts for a small proportion of the total flow, while the side air inlet 2031 accounts for a large proportion of the total flow, which facilitates the aerosol generating product 20 to form a negative pressure around the side air inlet 2031, so that the aerosol generated at the bottom of the aerosol generating product 20 is easily conducted from the bottom of the aerosol generating product 20 to the proximal end, which is convenient for the user to inhale.
[0051] Table 1 Inlet flow rate of aerosol generating products under different suction resistance
[0052]
[0053] In one embodiment of the present application, a first seal 3 is provided between the first cover plate 22 and the second cover plate 23, and the first seal 3 includes a first convex portion 31, and the first convex portion 31 clamps the aerosol generating product 20. In one embodiment of the present application, the first seal 3 can be a silicone with a certain elasticity, and the convex portion of the silicone can be used to clamp the aerosol generating product. In one embodiment of the present application, there are multiple first convex portions 31, and the multiple first convex portions 31 are spaced apart along the circumferential direction of the aerosol generating product 20, and the multiple first convex portions 31 clamp the aerosol generating product 20 together.
[0054] In one embodiment of the present application, the aerosol generating product 20 comprises a filter segment 201, a cooling segment 202, a filter rod segment 203 and a solid matrix segment 204 connected in sequence, the filter rod segment 203 is provided with a side air inlet 2031, the line between the center of the first convex portion 31 and the center of the side air inlet 2031 is a first line, the projection line of the first line in the direction in which the aerosol generating product enters the receiving chamber is a second line L3, and the value of the second line L3 is 0.5 mm-3 mm. For example, L3 can be 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm or 3.0 mm.
[0055] In one embodiment of the present application, the first convex portion 31 is located between the side air inlet 2031 and the solid matrix segment 204, so that after the aerosol generating product 20 is inserted into the storage chamber 11, the deformation around the side air inlet 2031 is small, the cross section of the side air inlet 2031 remains stable, and the user can inhale more smoothly. In one embodiment of the present application, the side air inlet 2031 is arranged opposite to the expanded hole segment 21. In one embodiment of the present application, the side air inlet 2031 is arranged opposite to the guide hole end 211.
[0056] When the user inhales the aerosol generating product 20, air enters the interior of the aerosol generating product 20 from the side air inlet 2031 of the aerosol generating product 20 and the gap between the aerosol generating product 20 and the inner wall of the storage chamber 11. For example, the airflow enters the gap between the aerosol generating product 20 and the inner wall of the storage chamber 11, and enters the solid matrix section 204 from the bottom of the aerosol generating product 20. The air carries the aerosol generated by the solid matrix section 204 away to the filter rod section 203. At this time, the high-temperature gas with aerosol is mixed with the fresh air at room temperature entering from the side air inlet 2031, and after mixing and cooling in the filter rod section 203 and the cooling section 202, it is inhaled by the user through the filter section 201.
[0057] In one embodiment of the present application, the distance between the inner wall of the expanded hole section 212 and the outer wall of the aerosol generating product 20 is L2, and the minimum value of L2 ranges from L2 greater than or equal to 0.5 mm; and / or, the minimum value of L2 ranges from L2 less than or equal to 5.0 mm, so that the side air intake of the aerosol generating product 20 is unobstructed, and when the user inhales, a large amount of fresh air at room temperature can enter the side air inlet 2031 through the gap between the expanded hole section 212 and the aerosol generating product 20, forming a negative pressure, and quickly extracting the aerosol formed inside the solid matrix section 204, and fully mixing it with the high-temperature aerosol, so that the temperature of the aerosol is reduced, the aerosol is more delicate, and the taste is better.
[0058] In one embodiment of the present application, the minimum value of L2 is in the range of L2 being greater than or equal to 0.5 mm and less than or equal to 5 mm. For example, the value of L2 may be 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm or 5.0 mm.
[0059] In one embodiment of the present application, a second seal 4 is provided between the cover plate 2 and the housing 1. The inner diameter of the second seal 4 is larger than the inner diameter of the inner wall of the storage chamber 11, and the difference is 0.05mm-0.5mm. The second seal 4 is used to make the cover plate 2 and the housing 1 airtightly connected, which can better guide the air. The inner diameter of the second seal 4 is larger than the inner diameter of the storage chamber 11, so that the second seal 4 will not affect the air intake due to deformation during installation. In one embodiment of the present application, the second seal 4 can be made of high temperature resistant silicone or fluororubber material.
[0060] In one embodiment of the present application, the cover plate 2 includes a first groove 24 and a second groove 25, the first groove 24 is provided for the first seal 3 to be installed on the cover plate 2, and the second groove is provided for the second seal 4 to be installed on the cover plate 2. In one embodiment of the present application, the aerosol generating device 10 may further include a heating tube 5, the heating tube 5 is arranged in the housing 1, and the inner wall of the heating tube 5 constitutes the inner wall of the storage cavity 11. In one embodiment of the present application, the heating tube 5 is an infrared heating tube. In one embodiment of the present application, the heating tube 5 is a sensor for electromagnetic heating.
[0061] In one embodiment of the present application, the cover plate 2 is made of plastic material with good comprehensive performance, such as PEEK, PI, PBI, PPS and temperature-resistant PC. The heat insulation sleeve is arranged on the outer side of the cover plate 2 and abuts against the heat insulation pipe stop surface 261 of the cover plate 2. The first sealing member 3 is installed in the first groove 24 and abuts against the first sealing member positioning surface 262 of the cover plate. The distance between the heat insulation pipe stop surface 261 and the first sealing member positioning surface 262 is 1.0mm-10mm, so as to ensure that the sealing and heat insulation performance of the heat insulation pipe of the cover plate 2 is good.
[0062] In one embodiment of the present application, the first seal 3 is preferably made of high temperature resistant silicone or fluororubber material to ensure its stable operation and long life in a high temperature environment. In one embodiment of the present application, the cross-sectional area of the first seal 3 in the area excluding the first protrusion 31 gradually decreases along the insertion direction of the aerosol generating product 20, and the transition is relatively natural. In one embodiment of the present application, the side of the first protrusion 31 close to the insertion direction of the aerosol generating product 20 is an arc surface, so that the insertion process of the aerosol generating product 20 is smoother; the side of the first protrusion 31 away from the insertion direction of the aerosol generating product 20 is a sharp angle, and during the suction process, the aerosol generating product 20 is not easy to fall off from the storage chamber 11.
[0063] In one embodiment of the present application, the aerosol generating device 10 may further include a circuit board assembly 6 and a battery assembly 7. The battery assembly 7 may provide electrical energy to the heating tube 5, and the circuit board assembly 6 may control the working state of the heating tube 5, etc.
[0064] An embodiment of the present application also provides an aerosol generating system, comprising: an aerosol generating device 10, which is the aerosol generating device 10 as described above; an aerosol generating product 20, which is inserted into a storage cavity 11 of the aerosol generating device 10, and a side air inlet hole 2031 is provided on the aerosol generating product 20, and the side air inlet hole 2031 is located in the insertion hole 21.
[0065] In one embodiment of the present application, the side air inlet 2031 is located on the circumferential side wall of the aerosol generating article 20, and the side air inlet 2031 extends along the radial direction of the aerosol generating article 20. In one embodiment of the present application, the aerosol generating article 20 includes a plurality of side air inlet 2031, and the plurality of side air inlet 2031 are arranged at intervals along the circumferential direction of the aerosol generating article 20, and the side air inlet 2031 is used to introduce air into the interior of the aerosol generating article 20. In one embodiment of the present application, the air entering from the side air inlet 2031 of the aerosol generating article 20 is mixed with the high-temperature air entering from the bottom of the aerosol generating article 20 and carrying the aerosol, and the distribution of the air pressure in the cigarette is as follows: Figure 8 As shown by Figure 8 It can be seen that the air entering the cigarette from the side air inlet 2031 forms a certain negative pressure around the side air inlet 2031. At this time, the high-temperature air carrying aerosol can move toward the filter part 201 under the action of the negative pressure.
[0066] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present application.
Claims
1. An aerosol generating device, characterized in that: include: A housing, wherein a receiving cavity for receiving the aerosol generating product is provided in the housing; a cover plate mounted on the housing, the cover plate having an insertion hole for inserting the aerosol generating article, The insertion hole includes a guide hole section, and the cross-sectional area of the guide hole section gradually decreases in the direction in which the aerosol generating product enters the storage cavity. The guide hole section is connected to the storage cavity, and at the position where the guide hole section is connected to the storage cavity, the cross-sectional area of the guide hole section is greater than the cross-sectional area of the storage cavity.
2. The aerosol generating device according to claim 1, characterized in that: The ratio of the bottom air intake to the total flow of the aerosol generating product is less than or equal to 25%.
3. The aerosol generating device according to claim 1, characterized in that: The distance between the inner wall of the storage cavity and the outer wall of the aerosol generating product is L1, and the minimum value of L1 ranges from L1 greater than or equal to 0.05 mm, and / or the minimum value of L1 ranges from L1 less than or equal to 0.15 mm.
4. The aerosol generating device according to claim 1, characterized in that: The cover plate includes a first cover plate and a second cover plate, the first cover plate has a flared hole section, the guide hole section is arranged on the second cover plate, the guide hole section is connected with the flared hole section, and the cross-sectional area of the flared hole section is larger than the cross-sectional area of the guide hole section.
5. The aerosol generating device according to claim 4, characterized in that: A first seal is disposed between the first cover plate and the second cover plate, wherein the first seal comprises a first convex portion, and the first convex portion clamps the aerosol generating product.
6. The aerosol generating device according to claim 5, characterized in that: There are a plurality of the first protrusions, and the plurality of the first protrusions are spaced apart along the circumferential direction of the aerosol generating article.
7. The aerosol generating device according to claim 5, characterized in that: The aerosol generating product is provided with a side air inlet, the line between the center of the first convex portion and the center of the side air inlet is the first line, the projection line of the first line in the direction in which the aerosol generating product enters the storage cavity is the second line, and the value of the second line is 0.5mm-3mm.
8. The aerosol generating device according to claim 4, characterized in that: The distance between the inner side wall of the expanded hole section and the outer peripheral wall of the aerosol generating article is L2, and the minimum value of L2 ranges from L2 greater than or equal to 0.5 mm; and / or the minimum value of L2 ranges from L2 less than or equal to 5.0 mm.
9. The aerosol generating device according to claim 1, characterized in that: A second sealing member is provided between the cover plate and the shell, and an inner diameter of the second sealing member is greater than an inner diameter of an inner wall of the storage cavity, and the difference is 0.05 mm-0.50 mm.
10. The aerosol generating device according to claim 1, characterized in that It also includes a heating tube, which is arranged in the shell, and the inner wall of the heating tube constitutes the inner wall of the storage cavity.
11. An aerosol generating system, characterized in that: include: An aerosol generating device, wherein the aerosol generating device is an aerosol generating device according to any one of claims 1 to 10; An aerosol generating product is inserted into the storage cavity of the aerosol generating device. The aerosol generating product is provided with a side air inlet hole, and the side air inlet hole is located in the insertion hole.