Aerosol generating device and method of using the same

Abstract

The present application relates to a kind of aerosol generating device and its using method, including shell, also including the tobacco rod accommodating cavity (2) and back ring air path (24) being arranged in shell;Tobacco rod accommodating cavity (2) is provided with back smoke hole (251) at near lip section side wall, tobacco rod accommodating cavity (2) is provided with smoke outlet (252) at the bottom or side wall of far lip section, the side wall of tobacco rod accommodating cavity (2) is provided with air inlet (253), air inlet (253) is arranged between back smoke hole (251) and smoke outlet (252) in the axial direction of tobacco rod accommodating cavity (2);The air inlet end of back ring air path (24) is connected with smoke outlet (252), and the air outlet end of back ring air path (24) is connected with back smoke hole (251).The present application is used together with the matched tobacco rod, can significantly increase the amount of smoke of first three mouthfuls;Simultaneously, since the smoke storage area in tobacco rod is moved to aerosol generating device, thereby increasing the overall amount of smoke.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of new tobacco smoking articles, and particularly relates to an aerosol generating device and a method of using the same. BACKGROUND

[0002] With the improvement of living standards, people pay more and more attention to their own health problems, and in recent years, the concern about the health problems of smoking is high. In order to meet the changing consumer demand, major enterprises at home and abroad have developed various completely hollow tobacco products to replace traditional cigarettes. Among these growing completely hollow tobacco products, electronic cigarettes and heat-not-burn cigarettes are the best.

[0003] Electronic cigarettes, as an extension of electronic products in the tobacco industry, have the advantage of strong variability of smoking taste, which can achieve arbitrary control of the smoking taste of smoke by adjusting the components of the oil. However, due to the fact that the smoke is mainly generated by electronic atomizers, the taste, especially the heat, is still different from that of traditional cigarettes that generate smoke by heating, and the acceptance of old smokers is poor.

[0004] Heat-not-burn cigarettes generate smoke by heating the flavor loaded on the tobacco sheet, and the principle of generating smoke is similar to that of traditional cigarettes. Therefore, the acceptance of the taste of smoke is good. The currently marketed heat-not-burn cigarettes are mainly divided into center heating type (such as IQOS) and circumferential heating (such as GLO) according to the heating position; but no matter which heating method is used to heat the cigarette, it follows the straight line type path of the smoke path of the traditional burning cigarette design from the far lip end of the cigarette to the near lip end of the cigarette. This design has some defects for heat-not-burn cigarettes: ① Whether it is center heating or circumferential heating, in order to prevent the mouthpiece from being too hot, the heating of the near lip end of the smoking segment of the cigarette is usually the worst, so that the smoke trapped at the near lip end of the smoking segment of the cigarette when the initial puff is reached is very large, resulting in a very small amount of smoke at the beginning; ② In order to control the length of the entire cigarette, the hollow part in the mouthpiece design is generally small, which makes the smoke storage small, limits the smoke amount of each puff, and makes the overall smoke amount exist bottleneck.

[0005] To solve the above problems, the present application is proposed. SUMMARY

[0006] The present application provides an aerosol generating device, which adopts a reverse smoke flow path, which can significantly increase the amount of smoke in the first three puffs; at the same time, by moving the smoke storage area in the cigarette to the aerosol generating device, the smoke storage amount during the puffing interval is greatly improved, thereby increasing the overall smoke amount, and the device needs to be used with a matching cigarette.

[0007] The first aspect of the present application provides an aerosol generating device, comprising a shell, wherein the aerosol generating device further comprises a cigarette accommodating cavity 2 and a loop air path 24 arranged in the shell;

[0008] The cigarette accommodating cavity 2 is provided with a return smoke hole 251 at the side wall of the proximal lip segment, and is provided with a smoke outlet hole 252 at the bottom or side wall of the distal lip segment. The side wall of the cigarette accommodating cavity 2 is provided with an air inlet hole 253, which is arranged between the return smoke hole 251 and the smoke outlet hole 252 in the axial direction of the cigarette accommodating cavity 2. The air inlet end of the loop air path 24 communicates with the smoke outlet hole 252, and the air outlet end of the loop air path 24 communicates with the first air hole 251.

[0009] The cigarette accommodating cavity 2 communicates with the external airflow through the air inlet hole 253.

[0010] The loop air path 24 can smoothly pass through the smoke, and can serve as a temporary storage area for the smoke evaporated by the heated cigarette during the suction interval.

[0011] Preferably, the outside of the air inlet hole 253 can be covered with a covering material such as a metal mesh that does not affect the airflow.

[0012] Preferably, the lower end of the air inlet hole 253 is provided with a first sealing ring 22, and the first sealing ring 22 is fixed to the inner wall of the cigarette accommodating cavity 2. The upper end and the lower end of the return smoke hole 251 are both provided with a second sealing ring 25, and the second sealing ring 25 is fixed to the inner wall of the cigarette accommodating cavity 2.

[0013] The first sealing ring 22 and the second sealing ring 25 are both used to fix the cigarette inserted into the cigarette accommodating cavity 2, and to seal the gap between the cigarette and the inner wall of the cigarette accommodating cavity 2.

[0014] Preferably, a heating element 23 is further arranged in the cigarette accommodating cavity 2, and the heating element 23 is located between the air inlet hole 253 and the smoke outlet hole 252. The heating element 23 is used to heat the cigarette inserted into the cigarette accommodating cavity 2.

[0015] Preferably, the heating element 23 is a circumferential heating element, which is wrapped around the periphery of the cigarette accommodating cavity 2.

[0016] Preferably, the heating element 23 is a central heating element arranged in the center of the cigarette accommodating cavity 2, which has a base 232, and a needle heating element 231 is fixedly installed at the center position of the base 232. The needle heating element is a heating sheet or a heating rod. The base 232 is further provided with an air passage hole 2321, and the cigarette accommodating cavity 2 communicates with the loop air path 24 through the air passage hole 2321 and the smoke outlet hole 252.

[0017] Preferably, a plurality of air holes 2321 are evenly arranged on the bottom wall 232.

[0018] Preferably, a controller 31 and a power supply 32 are further arranged in the shell.

[0019] The controller 31 is configured to control the heater 23 to heat.

[0020] The power supply 32 is configured to provide electric energy for the aerosol generating device.

[0021] Preferably, the controller 31 is a controller for manually adjusting the heating power by adjusting the resistance or an automatic controller with pre-set temperature rising program.

[0022] Preferably, the first sealing ring 22 and the second sealing ring 25 are made of elastic material, such as flexible polymer material.

[0023] The second aspect of the present application relates to a method for using the aerosol generating device, which comprises:

[0024] In the cigarette accommodating cavity 2 of the aerosol generating device of the first aspect of the present application, a matched cigarette 1 is inserted, which comprises a smoking segment 11, an air inlet cavity segment 12, a blocking segment 13, a back smoke cavity segment 14 and a filter segment 15 in sequence. The air inlet cavity segment 12 is provided with an air inlet 161 on the side wall. The back smoke cavity segment 14 is provided with a back smoke port 162 on the side wall. The air inlet 161 is in communication with the air inlet hole 253. The back smoke port 162 is in communication with the back smoke hole 251. Air enters the air inlet 161 of the cigarette from the air inlet hole 253 of the cigarette accommodating cavity, and then enters the smoking segment 11 from the proximal end of the smoking segment 11, and carries the smoke generated by the heated smoking segment 11 to flow out from the distal end of the smoking segment 11. Then, the air flows through the smoke outlet hole 252, the back ring air path 24, the back smoke hole 251, the back smoke port 162 of the matched cigarette, and then enters the filter segment 15 of the cigarette.

[0025] The present application has the following advantages:

[0026] 1. When the cigarette is smoked, air enters from the air inlet hole arranged on the side wall of the cigarette accommodating cavity. Compared with the consumption mode of ordinary heated cigarettes, the air flow direction is reversed through the smoking segment of the cigarette, from the proximal end to the distal end of the smoking segment of the cigarette, and then flows to the filter segment of the cigarette through the back ring air path. The heating degree is better, the smoke retention is small, and the problem of small smoke amount in the first few puffs of the heated cigarette can be solved.

[0027] 2. The aerosol generating device is provided with a back ring air path, and the smoke generated by the heated cigarette can be stored in the back ring air path, so that the storage amount of smoke is increased, and the amount of smoke per puff and the total amount of smoke are obviously increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of the aerosol generating device of the present invention;

[0029] Figure 2 1 is a schematic structural diagram of an aerosol generating device inserted into a cigarette according to Example 1 of the present invention;

[0030] Figure 3 2 is a schematic structural diagram of an aerosol generating device inserted into a cigarette according to Example 2 of the present invention;

[0031] Figure 4 Schematic diagram of the airflow path when the aerosol generating device of the present invention circumferentially heats a cigarette for smoking;

[0032] Figure 5 2 is a schematic structural diagram of an aerosol generating device inserted into a cigarette according to Example 3 of the present invention;

[0033] Figure 6 1 is a schematic structural diagram of an aerosol generating device inserted into a cigarette according to Example 4 of the present invention;

[0034] Figure 7 Schematic diagram of the airflow path when a cigarette is smoked by central heating of the aerosol generating device of the present invention;

[0035] Figure 8 It is a schematic diagram of the base structure of the present invention;

[0036] Figure 9 A schematic diagram of the structure of a cigarette used in conjunction with the present invention;

[0037] Description of reference numerals in the figures:

[0038] 1-cigarette, 11-smoking section, 12-air inlet cavity section, 13-blocking section, 14-smoke return cavity section, 15-filter section, 161-air inlet, 162-smoke return outlet, 2-cigarette accommodating chamber, 22-first sealing ring, 23-heating element, 231-needle heating element, 232-base, 2321-vent, 24-loop air path, 25-second sealing ring, 251-smoke return hole, 252-smoke outlet, 253-air inlet, 31-controller, 32-power supply. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below with reference to the embodiments and drawings. The embodiments are only intended to illustrate the present invention, but not to limit the present invention.

[0040] An aerosol generating device includes a housing, the aerosol generating device further comprising a cigarette receiving chamber 2, a loop gas path 24, a heater 23, a controller 31, and a power supply 32 disposed within the housing;

[0041] The cigarette accommodating cavity 2 is used for accommodating a cigarette matched with the aerosol generating device;

[0042] The cigarette accommodating cavity 2 is provided with a back smoke hole 251 at the proximal lip segment side wall, the cigarette accommodating cavity 2 is provided with a smoke outlet hole 252 at the distal lip segment bottom or side wall, the cigarette accommodating cavity 2 is provided with an air inlet hole 253 at the side wall, the air inlet hole 253 is arranged between the back smoke hole 251 and the smoke outlet hole 252 in the axial direction of the cigarette accommodating cavity 2; the air inlet end of the loop air path 24 is in communication with the smoke outlet hole 252, and the air outlet end of the loop air path 24 is in communication with the back smoke hole 251;

[0043] The cigarette accommodating cavity 2 is in communication with external airflow through the air inlet hole 253.

[0044] The controller 31 is used for controlling the heater 23 to heat; the controller 31 is a controller for manually adjusting the resistance to control the heating power or an automatic controller with pre-set temperature rising program.

[0045] The power supply 32 is used for providing electric energy for the aerosol generating device.

[0046] The loop air path 24 can smoothly pass the smoke, and can serve as a temporary storage area of the aerosol evaporated by the heated cigarette 1 during the suction interval.

[0047] The lower end of the air inlet hole 253 is provided with a first sealing ring 22, and the first sealing ring 22 is fixed at the inner wall of the cigarette accommodating cavity 2; the upper end and the lower end of the back smoke hole 251 are both provided with a second sealing ring 25, and the second sealing ring 25 is fixed at the inner wall of the cigarette accommodating cavity 2;

[0048] The first sealing ring 22 and the second sealing ring 25 are both used for fixing the cigarette inserted into the cigarette accommodating cavity 2 and sealing the gap between the cigarette and the inner wall of the cigarette accommodating cavity 2.

[0049] The cigarette accommodating cavity 2 is further provided with a heating element 23, the heating element 23 is located between the air inlet hole 253 and the smoke outlet hole 252, and the heating element 23 is used for heating the cigarette inserted into the cigarette accommodating cavity 2.

[0050] The heating element 23 is a circumferential heating element, which is wrapped around the periphery of the cigarette accommodating cavity 2;

[0051] Alternatively, the heating element 23 is a center heating element arranged at the center of the cigarette accommodating cavity 2, which has a base 232, a needle heating piece 231 fixedly arranged at the center of the base 232, and a ventilation hole 2321 arranged on the base 232. The cigarette accommodating cavity 2 is in airflow communication with the loop air passage 24 through the ventilation hole 2321 and the smoke outlet hole 252.

[0052] Preferably, the bottom wall 232 is uniformly provided with a plurality of ventilation holes 2321.

[0053] The first sealing ring 22 and the second sealing ring 25 are both made of elastic material, preferably flexible polymer material.

[0054] A method for using an aerosol generating device, comprising the following steps:

[0055] A cigarette 1 matched with the aerosol generating device is inserted into the cigarette accommodating cavity 2, which comprises a smoking section 11, an air inlet cavity section 12, a blocking section 13, a smoke return cavity section 14, and a filter section 15 in sequence. The air inlet cavity section 12 is provided with an air inlet 161 on the side wall. The smoke return cavity section 14 is provided with a smoke return port 162 on the side wall. The air inlet 161 is in communication with the air inlet hole 253. The smoke return port 162 is in communication with the smoke return hole 251. Air enters the air inlet 161 of the cigarette from the air inlet hole 253, enters the smoking section 11 from the proximal end of the smoking section 11, carries the smoke generated by the heated smoking section 11, and flows out from the distal end of the smoking section 11. Then, the air flows through the smoke outlet hole 252, the loop air passage 24, the smoke return hole 251, the smoke return port 162 of the matched cigarette, and the filter section 15 of the cigarette.

[0056] During smoking, air enters from the air inlet hole 253, flows to the distal end of the smoking section from the proximal end of the smoking section, and carries out the generated smoke. The smoke mixes with the smoke stored during the interval between puffs in the loop air passage 24, and then flows from the smoke outlet hole 252 to the filter section of the cigarette 1 and enters the consumer's mouth.

[0057] Embodiment 1

[0058] In this embodiment, the controller 31 and the power supply 32 are included to manually adjust the resistance to control the heating power. The heating element 23 is a circumferential heating element.

[0059] In this embodiment, the structural schematic diagram of the device is shown in FIG. 1. When the cigarette 1 is inserted, the overall shape is similar to that of a conventional cigarette, which can be held by two fingers to enhance the experience. At the same time, the device is provided with a power indicator 33 and a heating indicator 34. Figure 2 Figure 2 ​The structure can be charged by an external portable charger.

[0060] The working process of the embodiment is as follows:

[0061] A cigarette 1 matched with the aerosol generating device is inserted into the cigarette accommodating cavity 2 of the aerosol generating device, and the cigarette 1 sequentially comprises a smoking section 11, an air inlet cavity section 12, a blocking section 13, a smoke return cavity section 14, and a filter section 15. The air inlet cavity section 12 is provided with an air inlet 161 on the side wall. The smoke return cavity section 14 is provided with a smoke return port 162 on the side wall. The air inlet 161 is in communication with the air inlet hole 253. The smoke return port 162 is in communication with the smoke return hole 251. Air enters the air inlet 161 of the cigarette from the air inlet hole 253, enters the smoking section 11 from the proximal end of the smoking section 11, carries the smoke generated after the smoking section 11 is heated, and flows out from the distal end of the smoking section 11. The smoke sequentially passes through the smoke outlet hole 252, the circular air path 24, the smoke return hole 251, the smoke return port 162 of the matched cigarette, and enters the filter section 15 of the cigarette. When the heating temperature reaches a predetermined value, smoking can be started.

[0062] A common structure circumferential heating cigarette is selected and rolled with the same smoking material, and is matched with a common marketized circumferential heating aerosol generating device to perform smoking as a control sample.

[0063] The heating program is the same. The smoke amount is detected according to the conventional smoking mode of the conventional heating cigarette. Compared with the control sample, the smoke amount of the first three puffs of the cigarette matched with the aerosol generating device of the application is averagely 83% higher than that of the control sample. The average value of the smoke amount of all puffs in the smoking process is averagely 47% higher than that of the control sample, and no metal smell generated by the composite aluminum foil paper is generated.

[0064] Embodiment 2

[0065] In the embodiment, an automatic controller 31 pre-provided with a temperature rising program and a power supply 32 are included. The outer side of the air inlet hole 253 is covered with a metal mesh. The heater 23 is a circumferential heating element.

[0066] In the embodiment, the structural schematic diagram of the device is as shown in the accompanying drawings. Figure 3 After the cigarette 1 is inserted, the appearance of the device is greatly different from that of the conventional cigarette, but the advantage is that the standby battery is larger, which provides longer heating time and stronger heating effect for the device.

[0067] The working process of the embodiment is as follows:

[0068] Insert the cigarette 1 matched with the aerosol generating device into the cigarette accommodating cavity 2 of the aerosol generating device, the cigarette 1 sequentially comprises a smoking section 11, an air inlet cavity section 12, a blocking section 13, a back smoke cavity section 14 and a filter section 15, the air inlet cavity section 12 is provided with an air inlet 161 on the side wall, the back smoke cavity section 14 is provided with a back smoke outlet 162 on the side wall, the air inlet 161 is communicated with the air inlet hole 253, the back smoke outlet 162 is communicated with the back smoke hole 251, air enters the air inlet 161 of the cigarette from the air inlet hole 253, and enters the smoking section 11 from the proximal end of the smoking section 11, carries the smoke generated after the smoking section 11 is heated and flows out from the distal end of the smoking section 11, and sequentially passes through the smoke outlet hole 252, the back ring air path 24, the back smoke hole 251, the back smoke outlet 162 of the matched cigarette and enters the filter section 15 of the cigarette, and when the heating temperature reaches a predetermined value, smoking can be started.

[0069] The same smoking material is selected to roll a circumferential heating cigarette with a common structure, and the common marketized circumferential heating aerosol generating device is matched to perform smoking as a control sample.

[0070] The heating program is the same, and the smoke amount is detected in the conventional smoking mode of the heating cigarette. Relative to the control sample, the smoke amount of the first three puffs of the cigarette matched with the aerosol generating device of the application is 78% higher than that of the control sample on average, and the average value of the smoke amount of all puffs in the smoking process is 42% higher than that of the control sample.

[0071] Example 3

[0072] In this embodiment, the structure is basically the same as that of example 1, and the difference lies in that the heating element 23 is a center heating element arranged at the center of the cigarette accommodating cavity 2, which has a base 232, and a plurality of air holes 2321 are uniformly arranged on the base 232, and a vertical heating sheet 231 perpendicular to the base is arranged at the center position of the base 232.

[0073] In this embodiment, the structure diagram of the device is as shown in the accompanying Figure 5 When the cigarette 1 is inserted, the overall shape is similar to that of a conventional cigarette, and can be clamped by two fingers, thereby enhancing the experience. Meanwhile, the structure of the Figure 5 The structure can be charged by an external portable charger.

[0074] The working process of this embodiment is as follows:

[0075] Insert the cigarette 1 matched with the aerosol generating device into the cigarette accommodating cavity 2 of the aerosol generating device, the cigarette 1 sequentially comprises a smoking segment 11, an air inlet cavity segment 12, a blocking segment 13, a back smoke cavity segment 14 and a filter segment 15, the air inlet cavity segment 12 is provided with an air inlet 161 on the side wall, the back smoke cavity segment 14 is provided with a back smoke outlet 162 on the side wall, the air inlet 161 is communicated with the air inlet hole 253, the back smoke outlet 162 is communicated with the back smoke hole 251, air enters the air inlet 161 of the cigarette from the air inlet hole 253, and enters the smoking segment 11 from the near-lip end of the smoking segment 11, carries the smoke generated after the smoking segment 11 is heated and flows out from the far-lip end of the smoking segment 11, and sequentially passes through the smoke outlet hole 252, the back ring air path 24, the back smoke hole 251, the back smoke outlet 162 of the matched cigarette and enters the filter segment 15 of the cigarette, when the heating temperature reaches a predetermined value, the cigarette can be smoked.

[0076] The center heating cigarette with an ordinary structure is selected by using the same smoking material, and is matched with the center heating aerosol generating device on the market, as a control sample.

[0077] The heating program is the same, and the smoke amount is detected according to the conventional smoking mode of the heating cigarette. Compared with the control sample, the smoke amount of the first three puffs of the cigarette matched with the aerosol generating device of the application is 72% higher than that of the control sample on average, the average value of the smoke amount of all puffs in the smoking process is 34% higher than that of the control sample, and no metal smell generated by the composite aluminum foil paper is generated.

[0078] Example 4

[0079] In this embodiment, the structure is basically the same as that of example 2, and the difference is that the heating element 23 is a center heating element arranged at the center of the cigarette accommodating cavity 2, which has a base 232, and a plurality of air holes 2321 are uniformly arranged on the base 232, and a vertical heating rod 231 is arranged at the center of the base 232.

[0080] In this embodiment, the structure diagram of the device is as shown in the accompanying drawings Figure 6 When the cigarette 1 is inserted, the overall shape is greatly different from that of the conventional cigarette, but the advantage is that the standby battery is larger, which provides longer heating time and stronger heating effect for the device.

[0081] The working process of this embodiment is as follows:

[0082] In the cigarette accommodating cavity 2 of the aerosol generating device, a cigarette 1 matched therewith is inserted, the cigarette 1 comprising in sequence a smoking segment 11, an air inlet cavity segment 12, a blocking segment 13, a back smoke cavity segment 14 and a filter segment 15, the air inlet cavity segment 12 being provided with an air inlet 161 on the side wall thereof; the back smoke cavity segment 14 being provided with a back smoke outlet 162 on the side wall thereof, the air inlet 161 being in communication with the air inlet hole 253, and the back smoke outlet 162 being in communication with the back smoke hole 251, air entering the air inlet 161 of the cigarette from the air inlet hole 253, and entering the smoking segment 11 from the proximal end of the smoking segment 11, carrying the smoke generated by the smoking segment 11 after being heated to flow out from the distal end of the smoking segment 11, and entering the filter segment 15 of the cigarette in sequence through the smoke outlet hole 252, the back ring air path 24, the back smoke hole 251, the back smoke outlet 162 of the matched cigarette, and when the heating temperature reaches a predetermined value, smoking can be started.

[0083] A center heating cigarette of common structure is selected by rolling the same smoking material and is adapted to a center heating aerosol generating device of common marketization as a control sample.

[0084] The heating procedure is the same, and the smoke amount is detected in the conventional smoking mode of the heating cigarette. Relative to the control sample, the smoke amount of the first three puffs of the cigarette matched with the aerosol generating device of the application is averagely 64% higher than that of the control sample; the average value of the smoke amount of all puffs in the smoking process is 29% higher than that of the control sample, and no metal smell generated by the composite aluminum foil paper is produced.

[0085] It can be understood that the present application is described by some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the present application. In addition, under the guidance of the present application, the features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are within the scope of the present application.

Claims

1. An aerosol generating device, comprising a housing, characterized in that: The aerosol generating device further comprises a cigarette accommodating chamber (2) and a loop air path (24) arranged in the housing; A smoke return hole (251) is provided at the side wall of the near-lip section of the cigarette accommodating chamber (2), a smoke outlet hole (252) is provided at the bottom or side wall of the far-lip section of the cigarette accommodating chamber (2), and an air inlet hole (253) is provided on the side wall of the cigarette accommodating chamber (2), and the air inlet hole (253) is provided between the smoke return hole (251) and the smoke outlet hole (252) in the axial direction of the cigarette accommodating chamber (2); an air inlet end of the loop air path (24) is connected to the smoke outlet hole (252), and an air outlet end of the loop air path (24) is connected to the smoke return hole (251); The cigarette accommodating chamber (2) is in communication with the external air flow through the air inlet hole (253); A first sealing ring (22) is provided at the lower end of the air inlet hole (253), and the first sealing ring (22) is fixed to the inner wall of the cigarette receiving chamber (2); a second sealing ring (25) is provided at both the upper and lower ends of the smoke return hole (251), and the second sealing ring (25) is fixed to the inner wall of the cigarette receiving chamber (2); The first sealing ring (22) and the second sealing ring (25) are both used to fix the cigarette inserted into the cigarette accommodating cavity (2) and to seal the gap between the cigarette and the inner wall of the cigarette accommodating cavity (2); A heating element (23) is further provided in the cigarette accommodating cavity (2), and the heating element (23) is located between the air inlet hole (253) and the smoke outlet hole (252), and the heating element (23) is used to heat the cigarette inserted into the cigarette accommodating cavity (2); The heating element (23) is a central heating element arranged at the center of the cigarette holding chamber (2), and has a base (232). A needle-type heating element (231) is fixedly installed at the center of the base (232). The needle-type heating element (231) is a heating plate or a heating rod. The base (232) is also provided with an air vent (2321). The cigarette holding chamber (2) is in airflow communication with the loop air path (24) through the air vent (2321) and the smoke outlet (252). The heating element (23) is a circumferential heating element, which is wrapped around the periphery of the cigarette accommodating cavity (2).

2. The aerosol generating device according to claim 1, wherein A controller (31) and a power supply (32) are also provided in the housing; The controller (31) is used to control the heating element (23) to perform heating; The power supply (32) is used to provide electrical energy to the aerosol generating device.

3. The aerosol generating device according to claim 2, characterized in that The controller (31) is a controller for manually adjusting the resistance to control the heating power or an automatic controller with a pre-set heating program.

4. The aerosol generating device according to claim 1, wherein The first sealing ring (22) and the second sealing ring (25) are both made of elastic material.

5. A method for using the aerosol generating device according to any one of claims 1 to 4, characterized in that: The invention comprises the following steps: inserting a matching cigarette (1) into the cigarette accommodating chamber (2) of the aerosol generating device, wherein the cigarette (1) sequentially comprises a smoking section (11), an air inlet cavity section (12), a blocking section (13), a smoke return cavity section (14) and a filter section (15), wherein an air inlet (161) is provided on the side wall of the air inlet cavity section (12); a smoke return port (162) is provided on the side wall of the smoke return cavity section (14), and the air inlet (161) is connected to the air inlet hole (253); The smoke return port (162) is connected to the smoke return hole (251), and air enters the air inlet (161) of the cigarette from the air inlet hole (253), enters the smoking section (11) from the proximal lip end of the smoking section (11) of the cigarette, and carries smoke generated by the smoking section (11) after being heated, and flows out from the distal lip end of the smoking section (11), and enters the filter section (15) of the cigarette in sequence through the smoke outlet (252), the loop air path (24), the smoke return hole (251), and the matching smoke return port (162).

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