Aerosol generating device

Abstract

The utility model discloses an aerosol generating device, which comprises an air inlet hole, an air outlet hole and an air outlet hole, a heating member that heats the aerosol-generating article by being inserted into the aerosol-generating article; the heating component is installed on the fixed base, the fixed base comprises a vent hole, the vent hole penetrates through the fixed base, the vent hole is communicated with the air inlet hole, and in the suction state, external air reaches the bottom end of the aerosol generating product through the air inlet hole and the vent hole and penetrates through the aerosol generating product to flow out; the fixed base is fixedly installed in the shell in the radial direction, and the radial direction is perpendicular to the axial direction of the heating component. By adopting the technical scheme, on one hand, the heat loss can be reduced, the heat utilization rate can be improved, on the other hand, the temperature of the fixed base can be reduced, and heat transferred from the fixed base to other parts connected with the fixed base can be reduced, so that the aerosol generating device can be prevented from being overheated.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat-not-burn technology, and particularly relates to an aerosol generating device. Background Art

[0002] With the increasing attention of people to health, people generally realize that traditional cigarettes are harmful to health to a certain extent. Under this background, an atomizing product that generates aerosol by heating an aerosol substrate, namely an aerosol generating device, has emerged. Since only the aerosol substrate is heated without being burned, the release of harmful substances is greatly reduced, thereby reducing the harm to health. Most of the existing aerosol generating devices mainly use the internal heating method (heating the cigarette in the inner core). When in use, the heating component is inserted into the aerosol substrate, and then the heating component generates heat under the power supply of the battery to heat the aerosol substrate, and then aerosol is generated for consumers to suck.

[0003] The heating component is often installed on a fixed base. The material of the heating component is generally alumina, zirconia or metal, and its conventional temperature under heating conditions is often between 300°C and 400°C. The material of the fixed base is often high-temperature resistant plastic, zirconia or alumina. Although the fixed base itself does not generate heat, due to heat transfer, under heating conditions, the heating component will transfer part of the heat to the fixed base, resulting in the temperature of the fixed base being between 100°C and 250°C. On the one hand, it causes heat loss, and on the other hand, since the fixed base will transfer the heat to other components connected to it, and this transfer occurs step by step, resulting in the overheating of the shell and posing a risk of scalding the user. Summary of the Utility Model

[0004] The utility model provides the following technical solutions to solve the above technical problems.

[0005] The utility model provides an aerosol generating device, comprising:

[0006] An air inlet hole, through which external air enters the aerosol generating device;

[0007] A heating component, which heats the aerosol generating article by being inserted into the aerosol generating article;

[0008] A fixed base, on which the heating component is installed. The fixed base includes a ventilation hole that penetrates the fixed base, and the ventilation hole is communicated with the air inlet hole. In the suction state, external air reaches the bottom end of the aerosol generating article through the air inlet hole and the ventilation hole, and flows out through the aerosol generating article;

[0009] A housing, the fixed base is fixedly installed in the housing along the radial direction, and the radial direction is perpendicular to the axial direction of the heating component.

[0010] The above technical solution can reduce heat loss and improve energy utilization on the one hand, and can also reduce the temperature of the fixed base and reduce the heat transferred from the fixed base to other components connected to it, thereby preventing the aerosol generating device from overheating.

[0011] Optionally, the outer periphery of the fixed base is sealed to the inner wall of the shell, and a first sealing member is provided at the sealed connection.

[0012] Optionally, the air inlet hole is located on the side wall of the shell and is axially located below the vent hole.

[0013] Optionally, a containing chamber is provided in the shell, and the containing chamber is axially arranged opposite to the fixed base. The containing chamber is used to contain the aerosol generating product. The heating component is axially inserted into the containing chamber to heat the aerosol generating product. A second sealing member is also axially provided between the containing chamber and the fixed base.

[0014] Optionally, the vent hole is located between the second seal and the heating component.

[0015] Optionally, the through hole is an exit hole, and the fixed base further includes an entry hole, which passes through the fixed base. The entry hole is radially located between the shell and the second seal, and the exit hole is radially located between the second seal and the heating component. External air enters the aerosol generating device from the air inlet, penetrates from the entry hole, and passes out from the exit hole to reach the bottom end of the aerosol generating product.

[0016] Optionally, the radial spacing between the ventilation hole and the heating component is smaller than the radius of the aerosol generating article.

[0017] Optionally, the air inlet is located at an upper end of the shell in the axial direction.

[0018] Optionally, a containing chamber is provided in the shell, and the containing chamber is used to contain the aerosol generating product, and the radial distance between the air inlet and the heating component is greater than the radius of the containing chamber.

[0019] Optionally, the aerosol generating device also includes a containing chamber, which is used to contain the aerosol generating product. A heater hole is provided at the bottom end of the containing chamber, and a heating component is inserted into the containing chamber through the heater hole. A circulation hole is also provided at the bottom end of the containing chamber. The circulation hole and the air vent are axially arranged opposite to each other, and there is a distance between the circulation hole and the heater hole. External air reaches the bottom end of the aerosol generating product through the air inlet hole, the air vent and the circulation hole.

[0020] Optionally, the aerosol generating device further comprises:

[0021] A power supply portion, located axially below the heating component;

[0022] The heat insulation plate is axially located between the fixed base and the power supply part.

[0023] Optionally, a boss is provided on one side of the fixed base facing the heating component, and the vent hole extends from the fixed base to the boss and penetrates the boss. Description of the Drawings

[0024] Figure 1 Shows a front cross-sectional view of the aerosol generating device in an embodiment of the present invention;

[0025] Figure 2 Shows the overall structure schematic diagram of the fixed base of the heating component mounting seat in an embodiment of the present invention Figure 1 ;

[0026] Figure 3 Shows the top view of the fixed base of the heating component mounting seat in an embodiment of the present invention Figure 1 ;

[0027] Figure 4 Shows Figure 1 The partial enlarged view of;

[0028] Figure 5 Shows the overall structure schematic diagram of the aerosol generating device in an embodiment of the present invention;

[0029] Figure 6 Shows a front cross-sectional view of the aerosol generating device in another embodiment of the present invention;

[0030] Figure 7 Shows Figure 6 The partial enlarged Figure 1 ;

[0031] Figure 8 Shows the top view of the fixed base of the heating component mounting seat in an embodiment of the present invention Figure 2 ;

[0032] Figure 9 Shows Figure 6 The partial enlarged Figure 2 ;

[0033] Figure 10 Shows a front cross-sectional view of the aerosol generating device in another embodiment of the present invention;

[0034] Figure 11 Shows the overall structure schematic diagram of the aerosol generating device in another embodiment;

[0035] Figure 12 Shows the overall structure schematic diagram of the fixed base of the heating component mounting seat in another embodiment of the present invention;

[0036] Figure 13 Shows the top view of the fixed base of the heating component mounting seat in another embodiment of the present invention.

[0037] (Description of Symbols)

[0038] 1 - aerosol generating device, 2 - air inlet hole, 3 - heating component, 4 - aerosol generating article, 5 - fixed base, 6 - ventilation hole, 7 - housing, 8 - first seal, 9 - accommodation chamber, 10 - second seal, 11 - heater hole, 12 - circulation hole, 13 - power supply unit, 14 - heat insulation plate, 15 - boss, 16 - penetration hole. Detailed Embodiments

[0039] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Although the description of the present utility model will be introduced in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this implementation manner. On the contrary, the purpose of introducing the utility model in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without using these details. In addition, in order to avoid confusing or obscuring the key points of the present utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0040] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] The term "aerosol generating article" is used herein to denote an article in which an aerosol generating matrix is heated to generate an inhalable aerosol and deliver it to a consumer, where the "aerosol generating matrix" denotes a matrix capable of releasing volatile compounds upon heating to generate an aerosol. For example, it can be in the form of a heated cigarette made by wrapping an aerosol generating matrix such as tobacco shreds in a wrapper paper. The "aerosol generating article" includes an aerosol generating matrix and a filter part, and is used in cooperation with an aerosol generating device for heating or generates an aerosol for suction by other heat-not-burn methods.

[0042] The terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0043] To make the purpose, technical solutions and advantages of the present utility model clearer, the following will further describe the implementation manners of the present utility model in detail with reference to the drawings.

[0044] Generally, in order to stably generate aerosol under heating conditions in an aerosol generating article, the temperature of the heating component is generally between 300°C and 400°C. Under the action of heat conduction, the temperature of the fixed base is generally between 100°C and 250°C. Specifically, when the base material of the heating component is a material with low thermal conductivity such as zirconia, under the action of heat conduction, the temperature of the fixed base is often around 100°C; when the base material of the heating component is a material with low thermal conductivity such as alumina, under the action of heat conduction, the temperature of the fixed base is often around 250°C. Since the fixed base will conduct heat to other components connected to the fixed base, and continuously absorb the heat of the heating component during the heat conduction process, a relatively large amount of heat loss will occur. In addition, if the heat insulation scheme is designed improperly, it is very easy to cause the temperature of the housing of the aerosol generating device to be too high, and there is a risk of scalding the user. Based on this, the present utility model provides the following technical solutions to solve the above technical problems.

[0045] The present utility model provides an aerosol generating device, comprising:

[0046] An air inlet hole, through which external air enters the aerosol generating device;

[0047] A heating component, which heats the aerosol generating article by being inserted into the aerosol generating article;

[0048] A fixed base, on which the heating component is installed. The fixed base includes a ventilation hole that penetrates the fixed base, and the ventilation hole is communicated with the air inlet hole. In the suction state, external air reaches the bottom end of the aerosol generating article through the air inlet hole and the ventilation hole, and flows out through the aerosol generating article;

[0049] A housing, the fixed base is fixedly installed in the housing along the radial direction, and the radial direction is perpendicular to the axial direction of the heating component.

[0050] The present utility model is provided with a ventilation hole on the fixed base, so that external air can perform heat exchange when flowing through the ventilation hole, thereby bringing the relatively large amount of heat absorbed by the fixed base into the aerosol generating article. On the one hand, heat loss can be reduced and energy utilization efficiency can be improved. On the other hand, the temperature of the fixed base can be reduced, and heat transfer from the fixed base to other components connected thereto can be reduced, thereby preventing the aerosol production device from overheating.

[0051] The technical solutions of the present utility model will be elaborated in detail below with reference to the accompanying drawings.

[0052] As Figures 1 - 3 shown, the aerosol generating device 1 provided by the present utility model comprises:

[0053] An air inlet hole 2, through which external air enters the aerosol generating device 1;

[0054] A heating component 3 heats the aerosol-generating article 4 by being inserted into the aerosol-generating article 4;

[0055] A fixed base 5, on which the heating component 3 is mounted. The fixed base 5 includes a ventilation hole 6 that penetrates through the fixed base 5. The ventilation hole 6 communicates with the air inlet hole 2. In the suction state, outside air reaches the bottom end of the aerosol-generating article 4 through the air inlet hole 2 and the ventilation hole 6, and then flows out through the aerosol-generating article 4. Among them, the ventilation hole 6 can penetrate through the fixed base 5 obliquely or axially (such as Figures 1 - 2 , Figure 6 , Figures 9 - 10 the Y direction in

[0056] A housing 7, the fixed base 5 is fixedly mounted in the housing 7 along the radial direction (for example Figure 1 , Figure 6 and Figure 9 the X direction in

[0057] As described above, under the action of heat conduction, the fixed base will absorb more heat, and this part of the heat is neither utilized nor easily causes the aerosol generating device to overheat. Based on this, the present utility model is provided with a ventilation hole 6 that penetrates through the fixed base 5 on the fixed base 5, and uses this ventilation hole 6 to provide a heat exchange space for outside air, so as to transfer the absorbed more heat to the outside air through heat exchange, and then bring this part of the heat into the aerosol-generating article 4, for example, reach the bottom end of the aerosol-generating article 4, and flow out through the aerosol-generating article 4 and be sucked by the user together with the generated aerosol. On the one hand, the heat is brought back into the aerosol-generating article 4 by the air flow, reducing heat loss and improving energy utilization rate; on the other hand, the outside air is colder, and the colder outside air can reduce the temperature of the fixed base 5 after heat exchange in the ventilation hole 6. In addition, because air has low heat conduction characteristics, it can also reduce the heat conduction from the fixed base 5 to other components connected thereto, thereby preventing the aerosol production device 1 from overheating.

[0058] Specifically, after the colder outside air enters the aerosol production device 1 through the air inlet hole 2, it will further perform heat exchange through this ventilation hole 6. In the high-temperature state, the fixed base 5 can heat the air in the ventilation hole 6, and then the air flow reaches the bottom end of the aerosol-generating article 4, thereby bringing the heat back into the aerosol-generating article 4, which can assist in heating the aerosol-generating article 4, improve the generation rate of the aerosol, reduce heat loss, and also improve the heat utilization rate, while also preventing the aerosol production device from overheating.

[0059] Further, in combination with Figure 4 , in the above-described embodiment, the outer periphery of the fixed base 5 is hermetically connected to the inner wall of the housing 7, and a first seal 8 is provided at the sealed connection. Since there may be some rough parts on the surfaces of the materials (such as the fixed base 8 and the housing 7), and there will be manufacturing tolerances in the materials themselves, when the fixed base 5 is radially fixedly installed in the housing 7, there will inevitably be a certain gap between the outer periphery of the fixed base 5 and the housing 7. This gap will cause some external gas to reach the bottom end of the aerosol generating article 4 not through the ventilation hole 6 for heat exchange, but through this gap. Therefore, the present utility model provides a first seal 8 between the outer periphery of the fixed base 5 and the inner wall of the housing 7 to ensure the sealing effect, so that after the external air enters the aerosol generating device 1 through the air inlet hole 2, it flows to the ventilation hole 6 for heat exchange, and then reaches the bottom end of the aerosol generating article 4. In particular, the first seal 8 is an O-ring.

[0060] Further, in combination with Figure 5 , in the above-described embodiments, the air inlet hole 2 is located on the side wall of the housing 7 and is axially located below the ventilation hole 6. Thus, in the suction state, the external air enters the aerosol generating device through the air inlet 2, then flows to the ventilation hole 6 for heat exchange, and then reaches the bottom end of the aerosol generating article 4 and passes through the aerosol generating article 4 and the generated aerosol and flows out together to be sucked by the user. The air flow path is as Figure 1 or Figure 4 shown.

[0061] Further, continuing to refer to Figure 1 , in the above-described embodiments, a receiving chamber 9 is provided in the housing 7. The receiving chamber 9 is axially opposite to the fixed base 5. The receiving chamber 9 is used to receive the aerosol generating article 4. The heating component 3 is axially inserted into the receiving chamber 9 to heat the aerosol generating article 4. A second seal (not shown in the figure) is further provided between the receiving chamber 9 and the fixed base 5 axially. By providing the second seal, in the suction state, after the external air flows to the ventilation hole 6 for heat exchange, it reaches the bottom end of the aerosol generating article 4, rather than flowing to other parts of the aerosol generating device 1.

[0062] Further, in each of the above embodiments, the vent hole 6 is located between the second seal and the heating component 3. Under the action of heat conduction, the temperature of the fixed base 5 gradually decreases from the center to the periphery. Therefore, the closer the vent hole 6 is to the center of the fixed base 5, the higher the temperature. If the external gas exchanges heat here, a more sufficient heating effect can be obtained. Also, since the vent hole 6 of the present utility model is arranged between the second seal and the heating component 3, after the external gas fully exchanges heat in the vent hole 6, it flows more towards the bottom end of the aerosol generating article 4 to assist in heating the aerosol generating article 4, thereby further improving the energy utilization rate.

[0063] Further, as Figures 6 - 7 shown, in each of the above embodiments, the vent hole 6 is a through hole, and the fixed base 5 further includes a through hole 16 that penetrates the fixed base 5. The through hole 16 is located radially between the housing 7 and the second seal 10, and the through hole is located radially between the second seal 10 and the heating component 3. Among them, the through hole 16 can penetrate the fixed base 5 axially (such as Figures 1 - 2 , Figure 6 , Figures 9 - 10 in the Y direction) or obliquely. Specifically, the through hole 16 penetrates the fixed base 5 axially. The through hole 16 provides a space for heat exchange for the external air. After the outside air enters the aerosol generating device 1 from the air inlet hole 2, it penetrates through the through hole 16 and exchanges heat, and then exits from the through hole to reach the bottom end of the aerosol generating article 4. Since the external gas passes through the through hole 16 and the through hole in sequence after entering the aerosol generating device 1, which is equivalent to experiencing "two heatings", more heat from the fixed base 5 can be taken away, thereby further improving the energy utilization rate. At the same time, since the through hole 16 is located radially between the housing 7 and the second seal 10, and the through hole is located radially between the second seal 10 and the heating component 3, the external gas flows along the airflow path as shown in Figure 6 or Figure 7 and passes through the through hole 16 and the through hole in sequence to reach the bottom end of the aerosol generating article 4. Particularly, the second seal 10 is a sealing ring. Further, in combination with Figure 11 , the air inlet hole 2 is axially located at the upper end of the housing 7 and is axially opposite to the through hole 16, thereby shortening the airflow path.

[0064] Further, in each of the above embodiments, as Figure 8 shown, the radial distance d1 between the vent hole 6 and the heating component 3 is less than the radius of the aerosol generating article 4. By setting it like this, the vent hole 6 can be closer to the center of the heating component 3, and this position has a higher temperature, so that the airflow can bring more heat into the aerosol generating article 4.

[0065] Further, as Figure 9 shown, the radial distance d2 between the intake hole 2 and the heating component 3 is greater than the radius of the accommodation chamber 9.

[0066] Further, in each of the above embodiments, as Figure 10 shown, the aerosol generating device further includes an accommodation chamber 9 for accommodating the aerosol generating article 4. A heater hole 11 is provided at the bottom end of the accommodation chamber 9. The heating component 3 is inserted into the accommodation chamber 9 through the heater hole 11. A circulation hole 12 is also provided at the bottom end of the accommodation chamber 9. The circulation hole 12 is axially opposite to the ventilation hole 6, and there is a distance between the circulation hole 12 and the heater hole 11. Generally speaking, in the heating state, the temperatures at various positions of the cigarette (aerosol generating article) are different, that is, a certain temperature field is formed. Among them, the temperature at the center position of the cigarette is the highest. Therefore, the temperature is lower at a place farther from the heating component, which will cause uneven heating of the cigarette rod and thus affect the smoking experience. Based on this, the utility model provides a circulation hole 12 at the bottom end of the accommodation chamber 9, and there is a distance between the circulation hole 12 and the heater hole 11. Thus, the airflow after heat exchange can reach the bottom end of the aerosol generating article 4 along the circulation hole 12, thereby bringing heat into this part, which can improve the uniformity of smoke release and thus improve the smoking experience of users.

[0067] Further, in each of the above embodiments, as Figure 10 shown, the aerosol generating device 1 further includes a power supply unit 13 and a heat insulation plate 14. Among them, the heat insulation plate 14 is axially located below the heating component 3 and axially located between the fixed base 5 and the power supply unit 13. The power supply unit 13 includes a power source and a control board. After the aerosol generating device is turned on and operates, the control board controls the power source to supply power to the heating component 3 through a circuit. The heating component 3 generates heat energy to heat and atomize the aerosol generating article 4, thereby generating smoke for users to smoke. In order to prevent the heat of the heating component 3 from being transferred to the power supply unit 13, the utility model also provides a heat insulation plate 14. The heat insulation plate 14 can be silicone. Such a setting can prevent heat from being dissipated to the power supply unit 13 and affecting the normal operation of the power source. Further, the heat insulation plate 14 is fixedly installed in the housing 7 along the radial direction, and the outer periphery of the heat insulation plate 14 is hermetically connected to the inner wall of the housing 7. A sealing member is provided at the sealing joint, and the sealing member can be an O-ring.

[0068] Further, in each of the above embodiments, as Figures 2 - 3As shown, a boss 15 is provided on one side of the fixed base 5 facing the heating component 3, and the ventilation hole 6 extends from the fixed base 5 to the boss 15 and penetrates through the boss 15. After the suction is completed, the cigarette smoke remaining in the aerosol generating device 1 will liquefy into small droplets, and the droplets will fall on the fixed base 5. Since the fixed base 5 is provided with the ventilation hole 6, it is very likely that the droplets will penetrate into the heat insulation plate 14 through the ventilation hole 6, and then may penetrate into the power supply unit 13, which will cause damage to the smoking device and affect the normal use of the smoking device. Even if the user immediately takes out the fixed base 5 to shake off the droplets after the suction is completed, during the period of taking out, there will still be a small amount of droplets penetrating into the heat insulation plate 14 through the ventilation hole 6, and then may penetrate into the power supply unit 13. Based on this, in the present utility model, a boss 15 is provided on one side of the fixed base 5 facing the heating component 3, and the ventilation hole 6 extends from the fixed base 5 to the boss 15 and penetrates through the boss 15, and the boss 15 plays a role similar to a "dam", which can effectively intercept the droplets and slow down the penetration of the droplets into the heat insulation plate 14 or the power supply unit 13 through the ventilation hole 6. During this period, the user can take out the fixed base 5 in time to shake off the droplets. Specifically, as Figure 12 and 13 shown, each boss 15 may be provided with a through hole, as Figure 2 and Figure 3 shown. Each boss 15 may also be provided with a plurality of through holes.

[0069] Furthermore, in the above embodiments, the diameter of the ventilation hole is 0.5 mm - 2.5 mm. The number of ventilation holes is 10 - 50. Setting more ventilation holes can reduce the suction resistance, and a diameter within this range can heat the gas more sufficiently. Thus, the energy utilization rate can be further improved, and it is also convenient for production and manufacturing.

[0070] Although the present utility model has been illustrated and described by referring to some preferred embodiments of the present utility model, those of ordinary skill in the art should understand that the above content is a further detailed description of the present utility model in combination with specific embodiments, and it cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present utility model.

Claims

1. An aerosol generating device, characterized in that, Comprising: An air inlet through which outside air enters the aerosol generating device; A heating component that heats the aerosol generating article by being inserted into the aerosol generating article; A fixed base on which the heating component is mounted. The fixed base includes a ventilation hole that penetrates the fixed base, and the ventilation hole communicates with the air inlet. In a suction state, outside air reaches the bottom end of the aerosol generating article through the air inlet and the ventilation hole and flows out through the aerosol generating article; A housing in which the fixed base is fixedly mounted radially, and the radial direction is perpendicular to the axial direction of the heating component.

2. The aerosol generating device according to claim 1, characterized in that, The outer periphery of the fixed base is hermetically connected to the inner wall of the housing, and a first seal is provided at the hermetic connection.

3. The aerosol generating device according to claim 2, characterized in that, The air inlet is located on the side wall of the housing and is axially below the ventilation hole relative to the ventilation hole.

4. The aerosol generating device according to claim 1 or 2, characterized in that, A receiving chamber is provided in the housing. The receiving chamber is axially opposite to the fixed base. The receiving chamber is used to receive the aerosol generating article. The heating component is axially inserted into the receiving chamber to heat the aerosol generating article. A second seal is further provided between the receiving chamber and the fixed base along the axial direction.

5. The aerosol generating device according to claim 4, characterized in that, The ventilation hole is located between the second seal and the heating component.

6. The aerosol generating device according to claim 4, wherein, The ventilation hole is a through hole. The fixed base further includes a through hole that penetrates the fixed base. The through hole is radially located between the housing and the second seal, and the through hole is radially located between the second seal and the heating component. The outside air enters the aerosol generating device through the air inlet, penetrates through the through hole, and exits through the through hole to reach the bottom end of the aerosol generating article.

7. The aerosol generating device according to claim 2, characterized in that, The distance between the ventilation hole and the heating component in the radial direction is less than the radius of the aerosol generating article.

8. The aerosol generating device according to claim 2, wherein The air inlet is axially located at the upper end of the housing.

9. The aerosol generating device according to claim 8, characterized in that, A receiving chamber is provided in the housing. The receiving chamber is used to receive the aerosol generating article. The distance between the air inlet and the heating component in the radial direction is greater than the radius of the receiving chamber.

10. The aerosol generating device according to claim 1, wherein The aerosol generating device further includes a receiving chamber that is used to receive the aerosol generating article. A heater hole is provided at the bottom end of the receiving chamber. The heating component is inserted into the receiving chamber from the heater hole. A circulation hole is further provided at the bottom end of the receiving chamber. The circulation hole is axially opposite to the ventilation hole. The circulation hole and the heater hole have a spacing. The outside air reaches the bottom end of the aerosol generating article through the air inlet, the ventilation hole, and the circulation hole.

11. The aerosol generating device according to any one of claims 1-3, 5-10, characterized in that, Further comprising: A power supply unit that is axially located below the heating component; A heat insulation plate that is axially located between the fixed base and the power supply unit.

12. The aerosol generating device according to any one of claims 1-3, 5-10, characterized in that, A boss is provided on the surface of the fixed base facing the heating component. The ventilation hole extends from the fixed base to the boss and penetrates the boss.

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