Aerosol generating system and heating device

Abstract

The invention provides an aerosol generating system and a heating device. Wherein the aerosol-generating system comprises: a replaceable aerosol-generating article comprising at least one aerosol-generating substrate; a reusable heating device for removably receiving the aerosol-generating article and heating the at least one aerosol-generating substrate; the device comprises at least one air inlet, at least one air suction port and at least one airflow channel located between the at least one air inlet and the at least one air suction port. The at least one airflow channel defines an airflow path from the at least one air inlet to the at least one air suction port so as to deliver the aerosol to the air suction port; the at least one air inlet and the at least one air suction port are arranged on the heating device; a portion of the at least one airflow channel is arranged to the heating device and a portion is arranged to the aerosol-generating article. According to the aerosol-generating system, when the aerosol-generating article is received in the heating device, the aerosol-generating article and the heating device jointly define a complete airflow channel.

Description

Technical Field

[0001] Embodiments of the present application relate to the technical field of heat-not-burn aerosol generation, and in particular, to an aerosol generation system and a heating device. Background Art

[0002] During use, tobacco products (such as cigarettes, cigars, etc.) burn tobacco to produce tobacco smoke. People have tried to replace these tobacco-burning products by manufacturing products that release compounds without burning.

[0003] Examples of such products are heating devices that release compounds by heating rather than burning materials. For example, the material can be tobacco or other non-tobacco products, which may or may not contain nicotine. The heating device proposed in US Patent US5479948A drives a tape-type aerosol generation substrate to gradually drive a partial section or position of the aerosol generation substrate onto a heating element for heating; such a heating device drives and heats the tape-type aerosol generation substrate to allow a consistent aerosol delivery amount to be accurately provided to consumers in each puff. Summary of the Invention

[0004] An embodiment of the present application provides an aerosol generation system, including:

[0005] A replaceable aerosol generation article, including at least one aerosol generation matrix; the at least one aerosol generation matrix is configured to generate an aerosol when heated;

[0006] A reusable heating device, including:

[0007] A receiving cavity for removably receiving the aerosol generation article;

[0008] At least one first elastic element and at least one second elastic element arranged at intervals; when the aerosol generation article is received in the receiving cavity, at least a part of the aerosol generation article is elastically held between the at least one first elastic element and the at least one second elastic element.

[0009] In some embodiments, at least a part of the at least one first elastic element is located at one end of the longitudinal direction of the receiving cavity, and at least a part of the at least one second elastic element is located at the other end of the longitudinal direction of the receiving cavity.

[0010] In some embodiments, the aerosol generation article includes a first end and a second end facing away from each other in the longitudinal direction;

[0011] When the aerosol - generating article is received in the receiving cavity, a first end of the aerosol - generating article abuts against the at least one first elastic element, and a second end of the aerosol - generating article abuts against the at least one second elastic element.

[0012] In some embodiments, the aerosol - generating article further comprises:

[0013] An outer body defining an enclosed volume, the outer body including at least one air inlet and at least one air outlet, and an air passage defined through the enclosed volume between the at least one air inlet and the at least one air outlet.

[0014] In some embodiments, at least a portion of the at least one first elastic element is configured to be annular and surround the at least one air outlet;

[0015] And / or, at least a portion of the at least one second elastic element is configured to be annular and surround the at least one air inlet.

[0016] In some embodiments, the heating device further comprises at least one air - outlet passage;

[0017] When the aerosol - generating article is received in the receiving cavity, the at least one air - outlet passage is in fluid communication with the at least one air outlet for outputting aerosol.

[0018] In some embodiments, the at least one first elastic element is further configured to fluid - communicate the at least one air - outlet passage with the at least one air outlet;

[0019] And / or, the at least one first elastic element is further configured to provide an airtight seal between the heating device and at least one air outlet of the aerosol - generating article.

[0020] In some embodiments, the heating device further comprises at least one air - inlet passage;

[0021] When the aerosol - generating article is received in the receiving cavity, the at least one air - inlet passage is in communication with the at least one air inlet to supply air into the aerosol - generating article.

[0022] In some embodiments, the at least one second elastic element is further configured to fluid - communicate the at least one air - inlet passage with the at least one air inlet;

[0023] And / or, the at least one second elastic element is further configured to provide an airtight seal between the heating device and at least one air inlet of the aerosol - generating article.

[0024] In some embodiments, the aerosol-generating article is substantially configured in a sheet-like shape;

[0025] The aerosol-generating article is asymmetric along the length direction and / or the width direction.

[0026] In some embodiments, the receiving cavity is arranged to enable the aerosol generating product to be received in the receiving cavity only according to a first predetermined direction, and to prevent the aerosol generating product from being received in the receiving cavity according to a second predetermined direction; the second predetermined direction is defined by flipping the aerosol generating product in the first predetermined direction 180 degrees along the length direction and / or the width direction.

[0027] In some embodiments, the aerosol-generating article further comprises:

[0028] an outer body defining an enclosed volume, the aerosol-generating substrate being contained and retained within the outer body;

[0029] At least one substrate is located within the outer body and can generate heat by being penetrated by the changing magnetic field, thereby heating the at least one aerosol-generating substrate to generate an aerosol.

[0030] In some embodiments, the heating device comprises:

[0031] at least one induction heater; when the aerosol-generating article is received in the receiving cavity, the at least one induction heater is configured to generate a changing magnetic field that penetrates the at least one substrate.

[0032] In some embodiments, the thermal conductivity of at least a portion of the outer body is lower than 20 W / mk, so as to prevent the heat of the substrate from being transferred to the heating device as much as possible.

[0033] In some embodiments, the at least one induction heater is configured to be substantially planar;

[0034] And / or, the at least one induction heater comprises or is a planar spiral coil.

[0035] In some embodiments, the at least one induction heater is arranged substantially parallel to the receiving cavity.

[0036] In some embodiments, the heating device further comprises:

[0037] an airflow sensor configured to detect changes in airflow through the heating device when a user draws;

[0038] A controller, configured to control the at least one induction heater to generate a changing magnetic field according to the sensing result of the air flow sensor, so as to heat one of the at least one aerosol generation substrates individually each time to generate an aerosol satisfying one puff.

[0039] In some embodiments, the heating device further comprises:

[0040] At least one heater; when the aerosol generation article is received in the receiving cavity, the at least one heater is configured to heat at least one aerosol generation substrate of the aerosol generation article;

[0041] A proximal end and a distal end facing away from each other in a longitudinal direction;

[0042] A battery cell, located between the receiving cavity and the distal end, for supplying power to the at least one heater.

[0043] In some embodiments, the heating device further comprises:

[0044] A main circuit board, including a first part and a second part arranged along a length direction; wherein, the first part faces the receiving cavity, and the second part faces the battery cell.

[0045] In some embodiments, the at least one heater is electrically connected to the first part; and / or, the battery cell is electrically connected to the second part.

[0046] In some embodiments, a controller is arranged on the first part, and the controller is configured to control the battery cell to supply power to the at least one heater.

[0047] In some embodiments, the at least one heater is an induction heater driven by an alternating current to generate a changing magnetic field;

[0048] At least one inverter circuit is arranged on the first part, and the at least one inverter circuit is configured to convert the direct current output by the battery cell into an alternating current and supply it to the at least one induction heater, so as to drive the at least one induction heater to generate a changing magnetic field.

[0049] In some embodiments, the heating device further comprises:

[0050] A charging interface, arranged at the distal end;

[0051] A charging circuit board, arranged between the battery cell and the distal end, and used to control the charging interface to charge the battery cell; the charging circuit board is connected to the second part of the main circuit board.

[0052] In some embodiments, the heating device further comprises:

[0053] A housing that at least partially defines an outer surface of the heating device and has a front side and a rear side facing away from each other in a thickness direction; the aerosol-generating article can be received in or removed from the receiving cavity through the front side of the housing.

[0054] The at least one heater is disposed between the receiving cavity and the rear side.

[0055] In some embodiments, the heating device further comprises:

[0056] A housing that at least partially defines an outer surface of the heating device and has a front side and a rear side facing away from each other in a thickness direction; the housing defines an opening at the front side, and the aerosol-generating article can be received in or removed from the receiving cavity through the opening.

[0057] A door cover connected to the housing and movable relative to the housing to be selectively configured between an open position and a closed position; the door cover opens the opening in the open position and closes the opening in the closed position.

[0058] In some embodiments, the door cover is arranged to be rotatable relative to the housing to be selectively configured between the open position and the closed position;

[0059] and / or, the door cover is arranged to be linearly movable relative to the housing to be selectively configured between the open position and the closed position.

[0060] In some embodiments, the heating device further comprises:

[0061] A pin shaft extending in a longitudinal direction; the door cover is rotatably connected to the housing through the pin shaft and can rotate relative to the housing about the pin shaft as an axis.

[0062] In some embodiments, the door cover has a protruding portion;

[0063] When the aerosol-generating article is received in the receiving cavity, at least a part of the protruding portion of the door cover extends into the receiving cavity from the opening to abut against the surface of the aerosol-generating article, thereby at least partially supporting or holding the aerosol-generating article.

[0064] In some embodiments, the door cover is hollow;

[0065] and / or, at least one heat-insulating cavity is arranged in the door cover for heat insulation.

[0066] In some embodiments, at least one first magnetic element is arranged on the door cover;

[0067] The heating device includes at least one second magnetic element; when the door is in the closed position, the first magnetic element and the second magnetic element are magnetically adsorbed to keep the door in the closed position.

[0068] In some embodiments, the heating device further includes:

[0069] A front side and a rear side facing away from each other in the thickness direction;

[0070] At least one heater disposed between the receiving cavity and the rear side; when the aerosol-generating article is received in the receiving cavity, the at least one heater is configured to heat at least one aerosol-generating substrate of the aerosol-generating article.

[0071] A first bracket at least partially located between the at least one heater and the receiving cavity and at least partially defining the receiving cavity.

[0072] In some embodiments, the heating device further includes:

[0073] A proximal end and a distal end facing away from each other in the longitudinal direction;

[0074] A battery cell located between the first bracket and the distal end for powering the at least one heater; the first bracket includes an extension portion located between the receiving cavity and the battery cell.

[0075] An airflow sensor configured to detect a change in the airflow flowing through the heating device during user inhalation; the airflow sensor is received or held in the extension portion of the first bracket.

[0076] In some embodiments, it further includes: at least one air inlet, at least one suction port, and at least one airflow channel located between the at least one air inlet and the at least one suction port; the at least one airflow channel is arranged to define an airflow path from the at least one air inlet to the at least one suction port to transfer the aerosol to the suction port.

[0077] The at least one air inlet and the at least one suction port are arranged on the heating device;

[0078] A part of the at least one airflow channel is arranged on the heating device and a part is arranged on the aerosol-generating article.

[0079] In some embodiments, it further includes: at least one air inlet, at least one suction port;

[0080] At least one air inlet channel extending from the at least one air inlet to the receiving cavity;

[0081] At least one air outlet channel extending from the receiving cavity to the at least one air inlet port;

[0082] At least one air channel, at least partially defined by the aerosol-generating article; when the aerosol-generating article is received in the receiving cavity, the at least one air channel provides or establishes an air flow communication between the at least one air inlet channel and the at least one air outlet channel.

[0083] In some embodiments, the at least one air channel extends straight through the aerosol-generating article.

[0084] In some embodiments, the at least one air inlet channel extends in a meandering manner within the heating device.

[0085] In some embodiments, the heating device further comprises:

[0086] A proximal end and a distal end facing away from each other in a longitudinal direction;

[0087] The at least one air inlet channel includes a first path portion and a second path portion; wherein, at least a portion of the first path portion extends from the at least one air inlet port towards the distal end; the second path portion extends from the first path portion towards the proximal end to the receiving cavity.

[0088] In some embodiments, the heating device further comprises:

[0089] A proximal end and a distal end facing away from each other in a longitudinal direction;

[0090] At least one heater; when the aerosol-generating article is received in the receiving cavity, the at least one heater is configured to heat at least one aerosol-generating substrate of the aerosol-generating article;

[0091] A battery cell located between the receiving cavity and the distal end for powering the at least one heater;

[0092] The at least one air inlet channel is arranged to be located between the battery cell and the receiving cavity.

[0093] In some embodiments, it is characterized in that the heating device further comprises:

[0094] A proximal end and a distal end facing away from each other in a longitudinal direction;

[0095] The at least one air inlet channel is located between the receiving cavity and the distal end; the at least one air outlet channel is located between the receiving cavity and the proximal end.

[0096] In some embodiments, it further comprises:

[0097] A first air inlet, a second air inlet, and an air suction port;

[0098] A first air flow channel, formed or arranged between the first air inlet and the air suction port, for aerosol to be transferred to the air suction port;

[0099] A second air flow channel, formed or arranged between the second air inlet and the air suction port, for aerosol to be transferred to the air suction port.

[0100] In some embodiments, it further includes:

[0101] An air flow sensor, in air flow communication with both the first air flow channel and the second air flow channel, and thus configured to sense changes in the air flow passing through the first air flow channel and / or the second air flow channel.

[0102] In some embodiments, at least a part of the first air flow channel passes through the aerosol generating article;

[0103] At least a part of the second air flow channel passes through the aerosol generating article;

[0104] The part of the first air flow channel within the aerosol generating article is isolated from the part of the second air flow channel within the aerosol generating article.

[0105] In some embodiments, the first air flow channel and the second air flow channel are arranged substantially mirror-symmetrically.

[0106] In some embodiments, it further includes:

[0107] A proximal end and a distal end facing away from each other in the longitudinal direction, and a first side and a second side facing away from each other in the width direction;

[0108] The first air inlet is arranged on the first side and is located between the receiving cavity and the distal end;

[0109] The second air inlet is arranged on the second side and is located between the receiving cavity and the distal end.

[0110] In some embodiments, the heating device further includes:

[0111] A proximal end and a distal end facing away from each other in the longitudinal direction;

[0112] A first bracket, at least partially defining the receiving cavity; the first bracket includes an extension portion extending from the receiving cavity towards the distal end;

[0113] The first air flow channel includes a first air inlet channel extending from the first air inlet port to the receiving chamber; the second air flow channel includes a second air inlet channel extending from the second air inlet port to the receiving chamber; the first air inlet channel and the second air inlet channel are formed or defined in the extension part and isolated from each other in the extension part.

[0114] In some embodiments, the first bracket includes a front end mounted toward the proximal end, and a terminal end facing away from the front end;

[0115] A partition wall extending toward the end and terminating at the end is arranged in the extension portion; a first sensing hole and a second sensing hole are arranged on both sides of the partition wall respectively;

[0116] An airflow sensor is configured to sense changes in airflow flowing through the first air intake passage and / or the second air intake passage; the airflow sensor is connected to the airflow of the first air intake passage through the first sensing hole, and the airflow sensor is connected to the airflow of the second air intake passage through the second sensing hole.

[0117] In some embodiments, a first shielding wall extending toward the end and having a gap with the end is arranged in the extension portion; the first sensing hole is located between the first shielding wall and the partition wall, and is connected to the first air inlet channel through the gap between the first shielding wall and the end;

[0118] And / or, a second shielding wall extending toward the end and having a gap with the end is arranged in the extension part; the second sensing hole is located between the second shielding wall and the partition wall, and is connected to the airflow of the second air intake channel through the gap between the second shielding wall and the end.

[0119] In some embodiments, the heating device further comprises:

[0120] A front side and a rear side opposite to each other in a thickness direction;

[0121] at least one heater disposed between the receiving cavity and the back side; the at least one heater configured to heat at least one aerosol-generating substrate of the aerosol-generating article when the aerosol-generating article is received in the receiving cavity;

[0122] The second bracket is at least partially arranged between the at least one heater and the rear side, and at least partially accommodates or supports the at least one heater.

[0123] In some embodiments, the second bracket is provided with:

[0124] At least one annular rim surrounds the at least one heater.

[0125] Yet another embodiment of the present application further provides an aerosol generating system, comprising:

[0126] A replaceable aerosol generating article, comprising:

[0127] An outer body defining a closed volume;

[0128] At least one aerosol generating substrate, which is received and held within the outer body and is configured to generate an aerosol when heated; the outer body includes at least one air outlet for outputting the aerosol;

[0129] A reusable heating device, comprising:

[0130] A receiving cavity for removably receiving the aerosol generating article;

[0131] At least one air inlet;

[0132] At least one air outlet channel formed between the receiving cavity and the at least one air inlet; when the aerosol generating article is received within the receiving cavity, the at least one air outlet channel is in fluid communication with the at least one air outlet for delivering the aerosol to the at least one air inlet;

[0133] At least one first elastic element; when the aerosol generating article is received within the receiving cavity, the at least one first elastic element is configured to put the at least one air outlet channel in fluid communication with the at least one air outlet; and / or, the at least one first elastic element is further configured to provide an airtight seal between the heating device and at least one air outlet of the aerosol generating article.

[0134] Yet another embodiment of the present application further provides an aerosol generating system, comprising:

[0135] A replaceable aerosol generating article, comprising:

[0136] An outer body defining a closed volume;

[0137] At least one aerosol generating substrate, which is received and held within the outer body and is configured to generate an aerosol when heated; the outer body includes at least one air inlet for allowing external air to enter;

[0138] A reusable heating device, comprising:

[0139] A receiving cavity for removably receiving the aerosol generating article;

[0140] At least one air intake;

[0141] At least one intake channel, formed between the receiving cavity and the at least one air intake; when the aerosol-generating article is received in the receiving cavity, the at least one intake channel is in fluid communication with the at least one air inlet for delivering external air from the at least one air intake to the at least one air inlet;

[0142] At least one second elastic element; when the aerosol-generating article is received in the receiving cavity, the at least one second elastic element is configured to put the at least one intake channel in fluid communication with the at least one air inlet; and / or, the at least one second elastic element is further configured to provide an airtight seal between the heating device and at least one air inlet of the aerosol-generating article.

[0143] Yet another embodiment of the present application further provides a heating device configured to heat a substantially sheet-shaped aerosol-generating article to generate an aerosol; the heating device includes:

[0144] A receiving cavity for receiving the aerosol-generating article;

[0145] At least one first elastic element and at least one second elastic element arranged at intervals; when the aerosol-generating article is received in the receiving cavity, at least a part of the aerosol-generating article is elastically held between the at least one first elastic element and the at least one second elastic element.

[0146] Yet another embodiment of the present application further provides a heating device configured to heat an aerosol-generating article to generate an aerosol; the aerosol-generating article includes at least one air outlet for outputting the aerosol; the heating device includes:

[0147] A receiving cavity for removably receiving the aerosol-generating article;

[0148] At least one air suction port;

[0149] At least one air outlet channel, formed between the receiving cavity and the at least one air suction port; when the aerosol-generating article is received in the receiving cavity, the at least one air outlet channel is in fluid communication with the at least one air outlet for delivering the aerosol to the at least one air suction port;

[0150] At least one first elastic element; when the aerosol-generating article is received in the receiving cavity, the at least one first elastic element is configured to put the at least one air outlet channel in fluid communication with the at least one air outlet; and / or, the at least one first elastic element is further configured to provide an airtight seal between the heating device and at least one air outlet of the aerosol-generating article.

[0151] Another embodiment of the present application further provides a heating device configured to heat an aerosol-generating article to generate an aerosol; the aerosol-generating article includes at least one air inlet for external air to enter; the heating device includes:

[0152] A receiving cavity for removably receiving the aerosol-generating article;

[0153] At least one air inlet;

[0154] At least one air intake channel formed between the receiving cavity and the at least one air inlet; when the aerosol-generating article is received in the receiving cavity, the at least one air intake channel is in airflow communication with the at least one air inlet to deliver external air from the at least one air inlet to the at least one air inlet.

[0155] At least one second elastic element; when the aerosol-generating article is received in the receiving cavity, the at least one second elastic element is configured to put the at least one air intake channel in airflow communication with the at least one air inlet; and / or, the at least one second elastic element is further configured to provide an airtight seal between the heating device and at least one air inlet of the aerosol-generating article.

[0156] Another embodiment of the present application further provides an aerosol-generating system, including:

[0157] A replaceable aerosol-generating article including at least one aerosol-generating substrate; the at least one aerosol-generating substrate is configured to generate an aerosol when heated;

[0158] A reusable heating device for removably receiving the aerosol-generating article and heating at least one aerosol-generating substrate of the aerosol-generating article;

[0159] At least one air inlet, at least one suction port, and at least one airflow channel located between the at least one air inlet and the at least one suction port; the at least one airflow channel is arranged to define an airflow path from the at least one air inlet to the at least one suction port to transfer the aerosol to the suction port;

[0160] The at least one air inlet and the at least one suction port are arranged on the heating device;

[0161] A part of the at least one airflow channel is arranged on the heating device and a part is arranged on the aerosol-generating article.

[0162] In some embodiments, the aerosol-generating article further includes:

[0163] An outer body defining a closed volume, the outer body including at least one air inlet and at least one air outlet, and at least one air passage defined through the closed volume between the at least one air inlet and the at least one air outlet;

[0164] A portion of the at least one air flow passage is defined by the at least one air passage.

[0165] In some embodiments, the at least one air passage extends straight through the aerosol-generating article.

[0166] In some embodiments, the at least one air flow passage further includes:

[0167] At least one outlet passage; when the aerosol-generating article is received in the heating device, the at least one outlet passage fluidly connects the at least one air outlet to the at least one inhalation air flow for delivering aerosol to the at least one inhalation port.

[0168] In some embodiments, the at least one air flow passage further includes:

[0169] At least one inlet passage; when the aerosol-generating article is received in the receiving cavity, the at least one inlet passage connects the at least one air inlet to the at least one air inlet for allowing air to enter the aerosol-generating article.

[0170] In some embodiments, the heating device further includes:

[0171] A receiving cavity for removably receiving the aerosol-generating article;

[0172] At least one inlet passage extending from the at least one air inlet to the receiving cavity;

[0173] At least one outlet passage extending from the receiving cavity to the at least one inhalation port;

[0174] When the aerosol-generating article is received in the receiving cavity, the aerosol-generating article provides or establishes fluid communication between the at least one inlet passage and the at least one outlet passage.

[0175] In some embodiments, the at least one inlet passage extends in a meandering manner within the heating device.

[0176] In some embodiments, the heating device further includes:

[0177] A proximal end and a distal end facing away from each other in a longitudinal direction;

[0178] The at least one intake channel is located between the receiving cavity and the distal end; the at least one outlet channel is located between the receiving cavity and the proximal end.

[0179] In some embodiments, the heating device further comprises:

[0180] A proximal end and a distal end facing away from each other in the longitudinal direction;

[0181] The at least one intake channel includes a first path portion and a second path portion; wherein, at least a portion of the first path portion extends from the at least one intake port towards the distal end; the second path portion extends from the first path portion towards the proximal end to the receiving cavity.

[0182] In some embodiments, the heating device further comprises:

[0183] A proximal end and a distal end facing away from each other in the longitudinal direction;

[0184] At least one heater; when the aerosol-generating article is received in the receiving cavity, the at least one heater is configured to heat at least one aerosol-generating substrate of the aerosol-generating article;

[0185] A battery cell, located between the receiving cavity and the distal end, for powering the at least one heater;

[0186] The at least one intake channel is arranged to be located between the battery cell and the receiving cavity.

[0187] In some embodiments, the heating device further comprises:

[0188] At least one heater; when the aerosol-generating article is received in the receiving cavity, the at least one heater is configured to heat at least one aerosol-generating substrate of the aerosol-generating article;

[0189] An airflow sensor, configured to detect a change in the airflow flowing through the at least one airflow channel during user inhalation;

[0190] A controller, configured to control the at least one heater to heat one of the at least one aerosol-generating substrates individually each time according to the sensing result of the airflow sensor, thereby generating an aerosol satisfying one inhalation.

[0191] In some embodiments, the intake port includes a first intake port and a second intake port arranged at intervals;

[0192] The airflow channel includes:

[0193] A first airflow channel, formed between the first intake port and the at least one inhalation port;

[0194] A second air flow channel is formed between the second air inlet and the at least one suction port.

[0195] In some embodiments, at least a part of the first air flow channel passes through the aerosol generating article;

[0196] At least a part of the second air flow channel passes through the aerosol generating article;

[0197] The part of the first air flow channel within the aerosol generating article is isolated from the part of the second air flow channel within the aerosol generating article.

[0198] In some embodiments, the first air flow channel and the second air flow channel are arranged in a substantially mirror-symmetrical manner.

[0199] In some embodiments, it further includes:

[0200] An air flow sensor that is in air flow communication with both the first air flow channel and the second air flow channel, and is thus configured to sense changes in the air flow passing through the first air flow channel and / or the second air flow channel.

[0201] In some embodiments, the heating device further includes:

[0202] A proximal end and a distal end facing away from each other in the longitudinal direction, and a first side and a second side facing away from each other in the width direction;

[0203] A receiving cavity for removably receiving the aerosol generating article;

[0204] The first air inlet is arranged on the first side and is located between the receiving cavity and the distal end;

[0205] The second air inlet is arranged on the second side and is located between the receiving cavity and the distal end.

[0206] In some embodiments, the heating device further includes:

[0207] A proximal end and a distal end facing away from each other in the longitudinal direction;

[0208] A receiving cavity for removably receiving the aerosol generating article;

[0209] A first bracket that at least partially defines the receiving cavity; the first bracket includes an extension portion extending from the receiving cavity towards the distal end;

[0210] The first air flow channel includes a first air inlet channel extending from the first air inlet port to the receiving chamber; the second air flow channel includes a second air inlet channel extending from the second air inlet port to the receiving chamber; the first air inlet channel and the second air inlet channel are formed or defined in the extension part and isolated from each other in the extension part.

[0211] In some embodiments, the first bracket includes a front end mounted toward the proximal end, and a terminal end facing away from the front end;

[0212] A partition wall extending toward the end and terminating at the end is arranged in the extension portion; a first sensing hole and a second sensing hole are arranged on both sides of the partition wall respectively;

[0213] An airflow sensor is configured to sense changes in airflow flowing through the first air intake passage and / or the second air intake passage; the airflow sensor is connected to the airflow of the first air intake passage through the first sensing hole, and the airflow sensor is connected to the airflow of the second air intake passage through the second sensing hole.

[0214] In some embodiments, a first shielding wall extending toward the end and having a gap with the end is arranged in the extension portion; the first sensing hole is located between the first shielding wall and the partition wall, and is connected to the first air inlet channel through the gap between the first shielding wall and the end;

[0215] And / or, a second shielding wall extending toward the end and having a gap with the end is arranged in the extension part; the second sensing hole is located between the second shielding wall and the partition wall, and is connected to the airflow of the second air intake channel through the gap between the second shielding wall and the end.

[0216] In some embodiments, the aerosol-generating article is substantially configured in a sheet-like shape;

[0217] The aerosol-generating article is asymmetric along the length direction and / or the width direction.

[0218] In some embodiments, the heating device further comprises:

[0219] a receiving chamber for removably receiving the aerosol-generating article;

[0220] The receiving cavity is arranged to enable the aerosol generating product to be received in the receiving cavity only according to a first predetermined direction, and to prevent the aerosol generating product from being received in the receiving cavity according to a second predetermined direction; the second predetermined direction is defined by flipping the aerosol generating product in the first predetermined direction 180 degrees along the length direction and / or the width direction.

[0221] In some embodiments, the aerosol-generating article further comprises:

[0222] an outer body defining an enclosed volume, wherein the aerosol-generating substrate is received and held within the outer body;

[0223] at least one susceptor, located within the outer body and capable of being penetrated by a varying magnetic field to generate heat, thereby heating the at least one aerosol-generating substrate to generate an aerosol.

[0224] In some embodiments, the heating device comprises:

[0225] at least one induction heater; when the aerosol-generating article is received within the receiving cavity, the at least one induction heater is configured to generate a varying magnetic field that penetrates the at least one susceptor.

[0226] In some embodiments, at least a portion of the outer body has a thermal conductivity of less than 20 W / m·K to minimize heat transfer from the susceptor to the heating device.

[0227] In some embodiments, the at least one induction heater is substantially planar;

[0228] and / or, the at least one induction heater comprises or is a planar spiral coil.

[0229] In some embodiments, the at least one induction heater is arranged substantially parallel to the receiving cavity.

[0230] In some embodiments, the heating device further comprises:

[0231] a proximal end and a distal end opposite to each other in a longitudinal direction;

[0232] a receiving cavity for removably receiving the aerosol-generating article;

[0233] at least one heater; when the aerosol-generating article is received within the receiving cavity, the at least one heater is configured to heat at least one aerosol-generating substrate of the aerosol-generating article;

[0234] a battery cell located between the receiving cavity and the distal end for powering the at least one heater.

[0235] In some embodiments, the heating device further comprises:

[0236] a main circuit board including a first portion and a second portion arranged along a length direction; wherein, the first portion faces the receiving cavity, and the second portion faces the battery cell.

[0237] In some embodiments, the at least one heater is electrically connected to the first part; and / or, the cell is electrically connected to the second part.

[0238] In some embodiments, a controller is arranged on the first part, and the controller is configured to control the cell to supply power to the at least one heater.

[0239] In some embodiments, the heating device further comprises:

[0240] A charging interface, arranged at the distal end;

[0241] A charging circuit board, arranged between the cell and the distal end and configured to control the charging interface to charge the cell; the charging circuit board is connected to the second part of the main circuit board.

[0242] In some embodiments, the heating device further comprises:

[0243] A housing, at least partially defining an outer surface of the heating device and having a front side and a rear side facing away from each other in a thickness direction; the aerosol-generating article can be received in the receiving cavity or removed from the receiving cavity through the front side of the housing;

[0244] The at least one heater is arranged between the receiving cavity and the rear side.

[0245] In some embodiments, the heating device further comprises:

[0246] A first bracket, at least partially defining the receiving cavity; the first bracket includes an extension portion located between the receiving cavity and the cell;

[0247] An airflow sensor, configured to detect a change in airflow flowing through the at least one airflow channel during user suction; the airflow sensor is received or held in the extension portion of the first bracket.

[0248] In some embodiments, the heating device further comprises:

[0249] A receiving cavity, for removably receiving the aerosol-generating article;

[0250] A housing, at least partially defining an outer surface of the heating device and having a front side and a rear side facing away from each other in a thickness direction; the housing defines an opening at the front side, and the aerosol-generating article can be received in the receiving cavity or removed from the receiving cavity through the opening;

[0251] A door cover, connected to the housing and movable relative to the housing to be selectively configured between an open position and a closed position; the door cover opens the opening in the open position and closes the opening in the closed position.

[0252] In some embodiments, the door cover is arranged to be rotatable relative to the housing and thus selectively configured between the open position and the closed position;

[0253] and / or, the door cover is arranged to be linearly movable relative to the housing and thus selectively configured between the open position and the closed position.

[0254] In some embodiments, the heating device further includes:

[0255] A pin shaft, arranged to extend in the longitudinal direction; the door cover is rotatably connected to the housing through the pin shaft and can rotate relative to the housing with the pin shaft as the axis.

[0256] In some embodiments, the door cover has a protruding portion;

[0257] When the aerosol-generating article is received in the receiving cavity, at least a part of the protruding portion of the door cover extends from the opening into the receiving cavity to abut against the surface of the aerosol-generating article, thereby at least partially supporting or holding the aerosol-generating article.

[0258] In some embodiments, the door cover is hollow;

[0259] and / or, at least one heat-insulating cavity is arranged in the door cover for heat insulation.

[0260] In some embodiments, at least one first magnetic element is arranged on the door cover;

[0261] The heating device includes at least one second magnetic element; when the door cover is in the closed position, the first magnetic element and the second magnetic element are magnetically adsorbed to keep the door cover in the closed position.

[0262] In some embodiments, the heating device further includes:

[0263] A front side and a rear side facing away from each other in the thickness direction;

[0264] A receiving cavity for removably receiving the aerosol-generating article;

[0265] At least one heater, arranged between the receiving cavity and the rear side; when the aerosol-generating article is received in the receiving cavity, the at least one heater is configured to heat at least one aerosol-generating matrix of the aerosol-generating article.

[0266] A second bracket, at least partially disposed between the at least one heater and the rear side, and at least partially accommodating or supporting the at least one heater.

[0267] In some embodiments, the second bracket is provided with:

[0268] At least one annular rib, surrounding the at least one heater.

[0269] Another embodiment of the present application further provides an aerosol generating system, comprising:

[0270] A replaceable aerosol generating article, comprising:

[0271] At least one aerosol generating substrate; the at least one aerosol generating substrate is configured to generate aerosol when heated;

[0272] An outer body defining a closed volume, the outer body comprising at least one air inlet and at least one air outlet, and at least one air passage defined through the closed volume between the at least one air inlet and the at least one air outlet;

[0273] A reusable heating device for removably receiving the aerosol generating article and heating at least one aerosol generating substrate of the aerosol generating article; the heating device comprising:

[0274] A receiving cavity for removably receiving the aerosol generating article;

[0275] At least one air inlet and at least one air suction port;

[0276] At least one air inlet passage extending from the at least one air inlet to the receiving cavity;

[0277] At least one air outlet passage extending from the receiving cavity to the at least one air suction port;

[0278] When the aerosol generating article is received in the receiving cavity, an air flow communication between the at least one air inlet passage and the at least one air outlet passage is provided or established by the at least one air passage.

[0279] Another embodiment of the present application further provides an aerosol generating system, comprising:

[0280] A replaceable aerosol generating article, comprising at least one aerosol generating substrate; the at least one aerosol generating substrate is configured to generate aerosol when heated;

[0281] A reusable heating device for removably receiving the aerosol-generating article and heating at least one aerosol-generating substrate of the aerosol-generating article; the heating device includes:

[0282] A first air inlet and a second air inlet arranged at intervals;

[0283] An air suction port;

[0284] A first air flow channel formed between the first air inlet and the at least one air suction port and at least partially passing through the aerosol-generating article;

[0285] A second air flow channel formed between the second air inlet and the at least one air suction port and at least partially passing through the aerosol-generating article.

[0286] Another embodiment of the present application further provides a heating device configured to heat a substantially sheet-shaped aerosol-generating article to generate an aerosol; the heating device includes:

[0287] A receiving cavity for receiving the aerosol-generating article;

[0288] At least one air inlet and at least one air suction port;

[0289] At least one air inlet channel extending from the at least one air inlet to the receiving cavity;

[0290] At least one air outlet channel extending from the receiving cavity to the at least one air suction port;

[0291] When the aerosol-generating article is received in the receiving cavity, the aerosol-generating article provides or establishes the air flow communication of the at least one air inlet channel and the at least one air outlet channel.

[0292] In the above aerosol-generating system, when the aerosol-generating article is received in the heating device for heating, they jointly define a complete air flow channel. Brief Description of the Drawings

[0293] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the figures in the drawings do not constitute a scale limitation.

[0294] Figure 1 is a schematic diagram of an aerosol-generating system provided by an embodiment;

[0295] Figure 2 is Figure 1 a schematic diagram of removing or replacing the aerosol-generating article after the middle door cover is opened;

[0296] Figure 3 is Figure 2 an exploded schematic view of a perspective of an aerosol-generating article in

[0297] Figure 4 is Figure 1 an exploded schematic view of a perspective of a heating device in

[0298] Figure 5 is Figure 2 a schematic view of a perspective after removal of a first housing of the heating device in

[0299] Figure 6 is Figure 2 a schematic view of another perspective after removal of the first housing of the heating device in

[0300] Figure 7 is Figure 4 a structural schematic view of another perspective of a first bracket in

[0301] Figure 8 is Figure 7 a structural schematic view of another perspective of a first bracket in

[0302] Figure 9 is Figure 1 a sectional schematic view of a perspective of an aerosol-generating system in

[0303] Figure 10 is Figure 1 a sectional schematic view of a perspective of an aerosol-generating system in Detailed implementation manners

[0304] For ease of understanding of this application, the following provides a more detailed description of this application in conjunction with the accompanying drawings and specific implementation manners.

[0305] An embodiment of this application provides an aerosol-generating system for heating an aerosol-generating article that can be used as a consumable to generate an aerosol.

[0306] In some embodiments, the aerosol-generating system may include a reusable heating device and a replaceable consumable such as an aerosol-generating article. The replaceable consumable such as an aerosol-generating article is received or combined with the reusable heating device to form the aerosol-generating system.

[0307] For example Figures 1 to 2 shows a schematic view of an aerosol-generating system of an embodiment; in this embodiment, the aerosol-generating system includes:

[0308] An aerosol-generating article 200 as a replaceable consumable, and a heating device 100 that accommodates and receives the aerosol-generating article 200 and heats it.

[0309] In Figure 1 and Figure 2 In the illustrated embodiments, the heating device 100 includes several components disposed within a housing (which may be referred to as a casing). The overall design of the housing can vary, and the type or configuration of the housing that defines the overall size and shape of the heating device 100 can vary. Generally, the elongated body can be formed from a single integral casing, or the longitudinal casing can be formed from two or more separable bodies. In some examples, all or only a portion of the housing can be formed from a metal or alloy such as stainless steel, aluminum, or other suitable materials including various plastics (e.g., polycarbonate), metal-plating over plastic, ceramics, etc. In Figure 1 and Figure 2 In the illustrated embodiments, the heating device 100 is substantially flat; the longitudinal length of the heating device 100 is greater than the width, and the width is greater than the thickness.

[0310] In some embodiments, the housing of the heating device 100 substantially defines the outer surface of the heating device 100; in Figures 1 to 2 the illustrated embodiments, the heating device 100 includes:

[0311] A housing that can include one or more reusable components; the housing has a proximal end 110 and a distal end 120 that face away from each other in the longitudinal direction, a first side 130 and a second side 140 that face away from each other in the width direction, and a front side 150 and a rear side 160 that face away from each other in the thickness direction.

[0312] In use, the proximal end 110 is configured to be the end where the user inhales the aerosol, and a mouthpiece 111 for the user to suck is provided at the proximal end 110; while the distal end 120 is the end away from the user. A charging interface 121 is arranged at the distal end 120; the charging interface 121 is used to charge the heating device 100 and / or the battery cell 10 within the heating device 100. In some embodiments, the charging interface 121 is a USB Type-C interface; or in some variant embodiments, the charging interface 121 can also be a USB2.0, USB 3.0, or USB 4pin interface.

[0313] In some embodiments, the mouthpiece 111 and the housing / second housing 180 are separately prepared and then assembled and connected; and, the mouthpiece 111 is detachably connected to the housing; further, in use, the mouthpiece 111 can be detached or removed from the housing; and an airtight seal can be achieved between them through a sealing ring such as an O-ring. Or in some other embodiments, the mouthpiece 111 and the housing / second housing 180 are integrally molded from a moldable material and are non-detachable or separable from each other.

[0314] In use, the front side 150 is the side where the user operates to open the lid 190 for receiving the aerosol-generating article 200 or removing the aerosol-generating article 200; the rear side 160 is the side where the induction heater 30 is disposed.

[0315] According to Figure 1 and Figure 2 shown, the housing of the heating device 100 includes:

[0316] a first housing 170 and a second housing 180; the first housing 170 is adjacent to or defines the front side 150, and the second housing 180 is adjacent to or defines the rear side 160.

[0317] Figure 1 and Figure 2 In the embodiments of

[0318] the heating device 100 and / or the housing of the heating device 100 is in a longitudinally elongated cylindrical shape; and in an embodiment, the length of the heating device 100 and / or the housing of the heating device 100 is greater than the width, and the width is greater than the thickness, such that the heating device 100 and / or the housing of the heating device 100 is configured to be flat.

[0319] According to Figure 2 shown, the aerosol-generating article 200 is generally configured to be in a sheet shape; the sheet shape can be characterized in that the length of the aerosol-generating article 200 is greater than or equal to the width, and the width is greater than the thickness.

[0320] Correspondingly, the heating device 100 includes:

[0321] a receiving cavity 510 located within the housing; and the receiving cavity 510 is generally adapted to the shape of the aerosol-generating article 200 for receiving the aerosol-generating article 200. In some embodiments, the length of the receiving cavity 510 is greater than or equal to the width, and the width is greater than the thickness; and the receiving cavity 510 is arranged in a plane parallel to the longitudinal direction and the width direction of the heating device 100.

[0322] According to Figure 1 and Figure 2 shown, the receiving cavity 510 defines an opening 171 at the front side 150 of the housing. In an embodiment, the opening 171 is formed or defined by the first housing 170 of the housing. In use, the aerosol-generating article 200 can be removably received in or removed from the receiving cavity 510 through the opening 171.

[0323] According to Figure 1 and Figure 2 as shown, the heating device 100 further includes:

[0324] A movable door cover 190, movably coupled to the housing of the heating device 100 and capable of moving relative to the housing, and thus selectively moving between an open position and a closed position; in the open position, the door cover 190 opens the opening 171 to enable a user to operate to removably receive or remove the aerosol-generating article 200 in the receiving cavity 510; in the closed position, the door cover 190 blocks and closes the opening 171 to prevent the user from operating to removably receive or remove the aerosol-generating article 200 in the receiving cavity 510.

[0325] According to Figure 1 、 Figure 2 and Figure 4 as shown, the second housing 180 of the housing is provided with a pin shaft 181 arranged longitudinally on the first side 130; the door cover 190 is hinged to the housing through the pin shaft 181 and can rotate around the pin shaft 181, as shown by the arrow R1 in Figure 2 . Furthermore, the door cover 190 can be selectively configured between an open position and a closed position by rotation, so as to selectively open or close the opening 171. Or in some other variant embodiments, the pin shaft 181 can be arranged on the second side 140 of the housing; the door cover 190 forms a rotational connection with the housing on the second side 140. Or in some other variant embodiments, the pin shaft 181 can be located on the door cover 190.

[0326] Or in some other variant embodiments, the door cover 190 is attached to the surface of the front side 150 of the first housing 170 and can linearly move relative to the first housing 170 in the longitudinal direction; and thus can be selectively configured between an open position and a closed position during the movement, so as to selectively open or close the opening 171.

[0327] According to Figure 2 and Figure 6 as shown, the aerosol-generating article 200 in a substantially sheet shape has a cutout 290 at one of its corners. Thus, the aerosol-generating article 200 is arranged asymmetrically both in the length direction and / or the width direction.

[0328] For example, the aerosol-generating article 200 has an asymmetry of being flipped 180 degrees about the central axis m in the length direction. Or, the aerosol-generating article 200 has an asymmetry of being flipped 180 degrees about the central axis n in the width direction.

[0329] Accordingly, the receiving cavity 510 has an inclined boundary 518 adapted to the incision 290. Thus, in use, the aerosol-generating article 200 can only be received into the receiving cavity 510 along a predetermined direction, such as Figure 2 the first predetermined direction shown. Also, the inclined boundary 518 further has a rib 519 for abutting against the incision 290 of the aerosol-generating article 200.

[0330] According to Figure 1 、 Figure 2 and Figure 9 shown, the door cover 190 has a protruding portion 191. Also, when the aerosol-generating article 200 is received in the receiving cavity 510, the protruding portion 191 of the door cover 190 in the closed position can extend into the receiving cavity 510 from the open portion 171 to squeeze or abut against the aerosol-generating article 200, so that the aerosol-generating article 200 is abutted against the inner bottom wall of the receiving cavity 510 away from the opening 170 to stop.

[0331] According to Figure 1 、 Figure 2 、 Figure 4 and Figure 9 shown, at least one or more first magnetic elements are further arranged in the door cover 190; specifically, at least one or more first magnetic elements include a first magnetic element 192 and a first magnetic element 193. Among them, the first magnetic element 192 and the first magnetic element 193 are respectively located on both sides of the protruding portion 191 in the longitudinal direction. The first magnetic element 192 and the first magnetic element 193 are located inside the door cover 190 and are not exposed on the surface of the door cover 190.

[0332] According to Figure 1 、 Figure 2 、 Figure 4 and Figure 9 shown, a heat-insulating cavity 194 is further defined in the door cover 190; when the door cover 190 is in the closed position, the heat-insulating cavity 194 is located between the outer surface of the door cover 190 and the aerosol-generating article 200; to prevent the heat generated by the aerosol-generating article 200 from being transferred to the surface of the door cover 190 on the front side 150, which is beneficial to improving heat insulation.

[0333] Correspondingly, at least one or more second magnetic elements are arranged on the heating device 100; specifically, at least one or more second magnetic elements include a second magnetic element 61 and a second magnetic element 62. The second magnetic element 61 and the second magnetic element 62 are respectively located on both sides of the receiving cavity 510 in the longitudinal direction. Specifically, there is an installation groove 611 at a position close to the mouthpiece 111 in the second housing 180, and the second magnetic element 61 is installed in the installation groove 611. Correspondingly, the second magnetic element 62 can also be fixedly installed in the installation groove on the inner surface of the first housing 170.

[0334] When the door cover 190 is in the closed position, the first magnetic element 192 is magnetically adsorbed to the second magnetic element 61, and the first magnetic element 193 is magnetically adsorbed to the second magnetic element 62, thereby stably holding the door cover 190 in the closed position.

[0335] According to Figure 2 and Figure 3 As shown, the aerosol generating article 200 includes a first end 210 and a second end 220 that face away from each other in the longitudinal direction. Further, the aerosol generating article 200 includes:

[0336] A first air inlet 251 and a second air inlet 252 that are isolated from each other, formed or defined at the second end 220;

[0337] A first air outlet 261 and a second air outlet 262 that are isolated from each other, formed or defined at the first end 210;

[0338] A first air passage R21 extending from the first air inlet 251 to the first air outlet 261, and a second air passage R22 extending from the second air inlet 252 to the second air outlet 262. The first air passage R21 and / or the second air passage R22 are arranged to extend in the longitudinal direction of the aerosol generating article 200. The first air passage R21 and the second air passage R22 are isolated from each other. The first air passage R21 and / or the second air passage R22 extend straight.

[0339] According to Figure 2 and Figure 3 As shown, the aerosol generating article 200 includes:

[0340] An external body 230 that defines a closed volume, which is rigid and jointly defined by a cover plate 231 and a tray 232; specifically, the cover plate 231 and the tray 232 are combined in the thickness direction of the aerosol generating article 200 to form or define the external body 230 of the aerosol generating article 200. At least one or more cavities are arranged on the tray 232, which are arranged discretely or in an array.

[0341] Specifically, the cavities include at least one or more first cavities 271 arranged at intervals in the longitudinal direction, and at least one or more second cavities 272 arranged at intervals in the longitudinal direction; at least one or more first cavities 271 are arranged along the first air passage R21; at least one or more second cavities 272 are arranged along the second air passage R22.

[0342] In some embodiments, the cover plate 231 and the tray 232 are tightly coupled by interference fit or press fit. In some embodiments, a partition rib 235 extending from the first end 210 to the second end 220 in the length direction is arranged on the cover plate 231 and / or the tray 232; when the cover plate 231 and the tray 232 are coupled to each other, the first air passage R21 and the second air passage R22 are separated by the partition rib 235. In an embodiment, the first air passage R21 and / or the first air inlet 251 and / or the first air outlet 261 are arranged on one side of the partition rib 235, and the second air passage R22 and / or the second air inlet 252 and / or the second air outlet 262 are arranged on the other side of the partition rib 235.

[0343] In Figure 3 In the illustrated embodiment, the partition rib 235 is arranged on the surface of the tray 232 facing the cover plate 231; or in some alternative embodiments, the partition rib 235 is arranged on the surface of the cover plate 231 facing the tray 232.

[0344] A plurality of substrates and aerosol - generating substrates respectively formed or combined on the plurality of substrates are further arranged between the cover plate 231 and the tray 232; the substrates can be penetrated by a changing magnetic field to generate heat, and then heat the aerosol - generating substrates combined thereon to generate aerosol. The aerosol - generating substrate is a sheet - shaped or block - shaped solid or gel.

[0345] In some embodiments, the substrate is sheet - shaped. The substrate has a thickness of about 0.03 - 1.0 mm. In a more preferred embodiment, the substrate has a thickness of about 0.03 - 0.2 mm. In some specific embodiments, the thickness of the substrate is 0.26 mm.

[0346] In some embodiments, the aerosol - generating substrate is a continuous thin layer arranged on the substrate; for example, the aerosol - generating substrate substantially completely covers at least one side surface of the substrate.

[0347] In some embodiments, the aerosol - generating substrate can be meant to refer to a substrate capable of releasing volatile compounds that can form an aerosol. The volatile compounds can be released by heating the aerosol - generating substrate to generate an aerosol. In some general embodiments, the aerosol - generating substrate is or can include a solid or gel at room temperature.

[0348] In some embodiments, the aerosol - generating substrate can include one or more of powder, granule, fragment, strip, band or flake of vanilla leaf, tobacco leaf, homogenized tobacco, expanded tobacco; or, the solid aerosol - generating substrate can contain additional tobacco or non - tobacco volatile flavor compounds to be released when the substrate is heated.

[0349] In some embodiments, the aerosol - generating substrate may include an active substrate; the active substrate comprises or is derived from one or more plant products or their components; for example, in some specific embodiments, the active substrate includes the leaves, bark, fibrous tissues, stems, roots, petals, fruits, etc. of plants; for example, in one specific embodiment, the active substrate comprises or is derived from one or more plant varieties or their components, derivatives or extracts, and the plant variety is tobacco. For example, in one specific embodiment, the active substrate includes a mixture of plants such as tobacco and Chinese herbal medicines. The active substrate may include tobacco or tobacco - containing materials; for example, the active substrate may include any one of the following: tobacco leaves, tobacco vein fragments, reconstituted tobacco, homogenized tobacco, extruded tobacco, tobacco slurry, cast - leaf tobacco, and expanded tobacco.

[0350] In some alternative embodiments, the aerosol - generating substrate further includes: a flavor; the flavor may contain volatile fragrance components. For example, in general embodiments, the flavor may provide fragrances selected from menthol, lemon, vanilla, orange, wintergreen, cherry, and cinnamon; the flavor may include volatile tobacco fragrance compounds released from the aerosol - generating substrate upon heating.

[0351] In some alternative embodiments, the aerosol - generating substrate further includes: an aerosol - forming agent or a fuming agent; the aerosol - forming agent or fuming agent helps to densify and stabilize the formation of the aerosol during use. In some specific embodiments, the aerosol - forming agent or fuming agent is or includes at least one of glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, etc.

[0352] In some alternative embodiments, the aerosol - generating substrate further includes: an adhesive; the adhesive promotes the bonding of the components in the aerosol - generating substrate during use; for example, in some specific embodiments, the adhesive is or includes at least one of gum arabic, casein, dextrin, sodium carboxymethyl cellulose, starch, polyvinyl alcohol, guar gum, etc.

[0353] In some alternative embodiments, the aerosol - generating substrate further includes: reinforcing fibers; the fiber strength of the reinforcing fibers is generally higher than that of the tobacco plants in the active substrate, thereby enhancing the strength and plasticity of the aerosol - generating substrate during use. For example, in some specific embodiments, the reinforcing fibers include at least one of softwood fibers, hardwood fibers, hemp fibers or linen fibers, bamboo fibers, etc.

[0354] In one specific embodiment, the aerosol - generating substrate includes: 65 - 90 wt% of the active substrate, 3 - 10 wt% of the reinforcing fibers, 0 - 5 wt% of the adhesive, 5 - 15 wt% of the flavor, and 10 - 20 wt% of the aerosol - forming agent or fuming agent.

[0355] Alternatively, in yet another specific embodiment, the aerosol - generating substrate comprises: 65 - 90 wt% of an active substrate, 3 - 10 wt% of reinforcing fibers, 1 - 5 wt% of an adhesive, 5 - 15 wt% of a flavor, and 15 - 40 wt% of an aerosol - forming agent or a fuming agent.

[0356] In some embodiments, the areal density of the aerosol - generating substrate is 20 - 150 g / m 2 .

[0357] In some embodiments, the thickness of the aerosol - generating substrate is 0.1 - 0.6 mm. And in some embodiments, the thickness of the aerosol - generating substrate is greater than the thickness of the substrate.

[0358] In some embodiments, the water content in the aerosol - generating substrate is 6 - 14 wt%.

[0359] In some embodiments, the aerosol - generating substrate may comprise a plurality of sub - layers; for example, in some alternative embodiments, the aerosol - generating substrate may comprise a first sub - layer and a second sub - layer arranged in a laminated or stacked manner. Among them, the first sub - layer may comprise an active substrate, reinforcing fibers, an aerosol - forming agent or a fuming agent, etc.; the second sub - layer mainly comprises a flavor. Then, in use, the first sub - layer is used to generate aerosol, and the second sub - layer is used to adjust or change properties such as the taste or fragrance of the aerosol.

[0360] Or in yet some other embodiments, the aerosol - generating substrate having a plurality of sub - layers may comprise a first sub - layer and a second sub - layer arranged in a laminated or stacked manner. Among them, the first sub - layer may comprise an active substrate, such as tobacco; the second sub - layer comprises a flavor, and any one or several of functional additives such as an adhesive, a moisture - proof agent, a mildew - proof agent, and an antibacterial agent. For example, the second sub - layer comprises 0 - 20 wt% of essence and fragrance, 80 - 100 wt% of an adhesive, 0 - 0.2 wt% of a moisture - proof agent, 0 - 0.5 wt% of a mildew - proof agent, and 0 - 0.5 wt% of an antibacterial agent.

[0361] In this embodiment, the adhesive of the second sub - layer comprises at least one of gum arabic, casein, dextrin, sodium carboxymethyl cellulose, starch, polyvinyl alcohol, guar gum, etc.; the moisture - proof agent may comprise at least one of dimethyl fumarate, anhydrous calcium chloride, superabsorbent resin, etc.; the mildew - proof agent comprises at least one of biphenyl, o - phenylphenol, 2 - pyridinethiol - 1 - zinc oxide, ammonium persulfate, calcium phosphate, etc.; the antibacterial agent may be a metal oxide or a metal - ion inorganic antibacterial agent, etc.

[0362] In yet some other embodiments, the thickness of the second sub - layer of the aerosol - generating substrate is 0.001 - 0.1 mm; in the preparation, the second sub - layer is coated on the substrate by means of spraying, brushing, film transfer, etc., and then the first sub - layer is combined with the surface of the second sub - layer by means of roll - pressing or casting, etc., to form a multi - layer aerosol - generating substrate.

[0363] Alternatively, in some alternative embodiments, the aerosol - forming substrate may comprise a gel and / or a paste. A gel can be defined as a substantially dilute cross - linked system that does not exhibit flow when in a steady state. A paste can be defined as a viscous fluid such as a paste or a slurry; for example, a paste can be a fluid that has a dynamic viscosity greater than 1 Pa·S or 5 Pa·S or 10 Pa·S when at rest.

[0364] In one embodiment, an identifiable mark is disposed on the aerosol - forming substrate and / or the substrate. The mark can be arranged as an identifiable pattern; or in some alternative embodiments, the mark is an identifiable color, texture, number, text, two - dimensional code, etc. In some embodiments, the mark is used to provide an identification indication related to the unique properties of the aerosol - generating article 200. The user or the heating device 100 can obtain the unique properties of the aerosol - generating article 200 by identifying the mark.

[0365] In some embodiments, the unique properties of the aerosol - generating article 200 include various information about the aerosol - generating article 200, such as authenticity information, expiration date, and place of origin. In some embodiments, the above - mentioned various information of the aerosol - generating article 200 can be obtained through the mark, so as to determine whether the aerosol - generating article 200 is genuine, or when the aerosol - generating article 200 has expired and where the aerosol - generating article 200 is manufactured. Therefore, the user may not inadvertently use an inauthentic aerosol - generating article 200, an expired aerosol - generating article 200, or an aerosol - generating article 200 from an undesired source location.

[0366] In some alternative embodiments, the unique properties of the aerosol - generating article 200 may include the flavor of the flavoring contained in the aerosol - forming substrate, such as peach flavor, mint flavor, orange flavor.

[0367] For another example, in some embodiments, the unique properties of the aerosol - generating article 200 may include the strength of nicotine contained in the aerosol - forming substrate, such as the nicotine content.

[0368] In Figure 2 and Figure 3In the illustrated embodiments, the substrate is rigid or hard. In some embodiments, the substrate is made of a susceptive metal or alloy; so that in use, the substrate can be heated by electromagnetic induction or by being penetrated by a changing magnetic field and then further heat the aerosol - generating matrix to generate an aerosol. In some specific embodiments, the susceptive metal or alloy for preparing or forming the substrate is at least one of, for example, iron or ferrous alloy, nickel or nickel alloy, cobalt or cobalt alloy, graphite, plain carbon steel, stainless steel, ferritic stainless steel, permalloy, etc. In some specific embodiments, the substrate includes a permalloy with an alloy grade of 1J50 or 1J85; for example, in the substrate made of permalloy, the mass percentage of iron ranges from 15wt% to 85wt%, and the mass percentage of nickel does not exceed 85wt%.

[0369] Specifically, the plurality of substrates includes: at least one or more sheet - shaped first substrates 241, and at least one or more first aerosol - generating matrices 242 formed or bonded to the at least one or more sheet - shaped first substrates 241. The first substrate 241 and the first aerosol - generating matrix 242 are received and held in the first cavity 271.

[0370] Specifically, the plurality of substrates further includes: at least one or more sheet - shaped second substrates 281, and at least one or more second aerosol - generating matrices 282 formed or bonded to the at least one or more sheet - shaped second substrates 281.

[0371] In a specific embodiment, each of the plurality of first aerosol - generating matrices 242 is respectively bonded to each of the plurality of first substrates 241. Each of the plurality of second aerosol - generating matrices 282 is respectively bonded to each of the plurality of second substrates 281. And each of the plurality of first aerosol - generating matrices 242 and / or the first substrates 241 is respectively and discretely arranged in the plurality of first cavities 271; the plurality of second aerosol - generating matrices 282 and / or the second substrates 281 are respectively and discretely arranged in the plurality of second cavities 272.

[0372] The first aerosol - generating matrix 242 is exposed to or located in the first air passage R21, and thus the aerosol generated by the first aerosol - generating matrix 242 can be output from the first air passage R21 to the first air outlet 261; the second aerosol - generating matrix 282 is exposed to or located in the second air passage R22, and thus the aerosol generated by the second aerosol - generating matrix 282 can be output from the second air passage R22 to the second air outlet 262.

[0373] In some embodiments, the first substrate 241 and / or the second substrate 281 may be a dense sheet; or in some other embodiments, the first substrate 241 and / or the second substrate 281 may be a mesh with meshes, so that the first substrate 241 and / or the second substrate 281 is fluid-permeable.

[0374] In some embodiments, the cover plate 231 and / or the tray 232 are made of materials with low thermal conductivity and low mass heat capacity, such as zirconia, glass, PEEK (polyether ether ketone), etc., and the long-term heat resistance needs to be not less than 250 °C. Or in some other variant embodiments, the cover plate 231 and / or the tray 232 include or are paper; for example, the cover plate 231 and / or the tray 232 include fiber paper prepared from wood fibers, hemp fibers or linen fibers, bamboo fibers, etc.

[0375] In some embodiments, the thermal conductivity of the cover plate 231 and / or the tray 232 is less than 20 W / m·K; or in a more preferred embodiment, the thermal conductivity of the cover plate 231 and / or the tray 232 is less than 1 W / m·K. The tray 232 with the above low thermal conductivity minimizes the heat transfer of the induced-heating substrates such as the first substrate 241 and the second substrate 281 to the heating device 100 when the aerosol-generating article 200 is received in the receiving cavity 510 of the heating device 100 and induced to heat, especially preventing the heat of the substrates such as the first substrate 241 and the second substrate 281 from being transferred to the first bracket 50 that defines the receiving cavity 510.

[0376] According to Figure 2 and Figure 3 In the illustrated embodiment, the cutout 290 of the aerosol-generating article 200 includes: a first cutout 291 on the cover plate 231 and a second cutout 292 on the tray 232. When the cover plate 231 and the tray 232 are combined, the first cutout 291 and the second cutout 292 together form or define the cutout 290 of the aerosol-generating article 200.

[0377] According to Figures 4 to 10 As shown, the heating device 100 further includes:

[0378] A battery cell 10, arranged longitudinally between the receiving cavity 510 and the distal end 120 for powering the heating device 100 and / or the heater 30;

[0379] A charging circuit board 23, located between the battery cell 10 and the distal end 120; a charging IC (i.e., a charging management chip) is arranged on the charging circuit board 23 for controlling the charging of the battery cell 10 through the charging interface 121;

[0380] The main circuit board 20 integrates or arranges a control circuit or an MCU controller; the main circuit board 20 includes a first part 21 and a second part 22 arranged along the longitudinal direction; at least part of the second part 22 is located between the battery cell 10 and the rear side 160; at least part of the first part 21 is located between the receiving cavity 510 and / or the induction heater 30 and the rear side 160.

[0381] In some embodiments, the charging circuit board 23 is connected to the second part 22 of the main circuit board 20 through conductive leads or laminated conductive lines, etc. Also, the battery cell 10 abuts against and is connected to the second part 22 of the main circuit board 20.

[0382] An MCU controller, etc. is arranged on the first part 21 of the main circuit board 20 to control the power supply to the heater 30. Or the first part 21 of the main circuit board 20 is used to control the power supply to the heater 30. At least one inverter circuit is arranged on the first part 21 of the main circuit board 20 to convert the direct current output by the battery cell 10 into an alternating current and supply it to at least one planar spiral coil 30, so that the planar spiral coil 30 generates a changing magnetic field. In some embodiments, at least one inverter circuit includes at least one capacitor, and at least one capacitor is operably combined with at least one planar spiral coil 30 to form an LC oscillator, and an alternating current supplied to at least one planar spiral coil 30 is formed through the oscillation of the LC oscillator.

[0383] According to Figures 4 to 10 As shown, the heating device 100 further includes:

[0384] At least one or more induction heaters 30 are arranged discretely or in an array. At least one or more induction heaters 30 are arranged between the receiving cavity 510 and the rear side 160; at least one or more induction heaters 30 can be independently connected to the first part 21 of the main circuit board 20, and thus can be independently powered by the main circuit board 20.

[0385] In Figures 4 to 10 In the shown embodiment, at least one or more induction heaters 30 are configured as electromagnetic induction heaters capable of generating a changing magnetic field to induce heating of the matrix of the aerosol generating article 200 through the magnetic field. When the aerosol generating article 200 is received in the receiving cavity, at least one or more induction heaters 30 induce heating of the aerosol generating article 200 by generating a magnetic field.

[0386] Alternatively, in more variant embodiments, the heating device 100 further comprises at least one or more heaters 30, which include at least one of a resistive heater, an infrared heater, a light heater, etc. When the aerosol-generating article 200 is received in the receiving cavity, the heater 30 generates heat through resistive joule heating and then transfers the heat to heat the aerosol-generating substrate of the aerosol-generating article 200; alternatively, the heater 30 heats the aerosol-generating substrate of the aerosol-generating article 200 by radiating infrared light.

[0387] Specifically, according to Figures 4 to 10 As shown in, when the aerosol-generating article 200 is received in the receiving cavity 510, a plurality of induction heaters 30 are respectively opposite to the aerosol-generating substrate and / or the substrate, such as the first substrate 241 or the second substrate 281, so that each induction heater 30 can separately heat the opposite first substrate 241 or second substrate 281.

[0388] In Figures 4 to 10 In the illustrated embodiment, the induction heater 30 is substantially planar. In an embodiment, the induction heater 30 includes a planar spiral coil 30. When the aerosol-generating article 200 is received in the receiving cavity, the induction heater 30 is substantially arranged parallel to the substrate, such as the first substrate 241 or the second substrate 281. In Figures 4 to 10 In, the planar spiral coil 30 is circular in shape; or in some other variant embodiments, the planar spiral coil 30 is square, oval, etc. in shape.

[0389] In some embodiments, when the aerosol-generating article 200 is received in the receiving cavity, the planar spiral coil 30 is substantially arranged parallel to the substrate, such as the first substrate 241 or the second substrate 281. And the distance between the planar spiral coil 30 and the substrate, such as the first substrate 241 or the second substrate 281, is less than 15 mm; more preferably, the distance between the planar spiral coil 30 and the substrate, such as the first substrate 241 or the second substrate 281, is less than 10 mm. In some embodiments, the distance between the planar spiral coil 30 and the substrate, such as the first substrate 241 or the second substrate 281, is less than the diameter of the planar spiral coil 30.

[0390] In an embodiment, a plurality of planar spiral coils 30 are connected to the main circuit board 20, so that an alternating current can be independently provided by the main circuit board 20 to make the plurality of planar spiral coils 30 independently generate a magnetic field, thereby separately starting heating. For example, in some embodiments, several or a plurality of planar spiral coils 30 are all separately startable; so that each planar spiral coil 30 can only separately heat the opposite substrate, such as the first substrate 241 or the second substrate 281, and then the aerosol-generating substrate on the substrate, such as the first aerosol-generating substrate 242 or the second aerosol-generating substrate 282, is heated to generate aerosol.

[0391] In some embodiments, the main circuit board 20 is configured to control a plurality of planar spiral coils 30 to start heating one by one in a predetermined order. In some embodiments, the main circuit board 20 is configured to control a plurality of planar spiral coils 30 not to start heating simultaneously; thus, for example, each time the user takes a puff, the main circuit board 20 only controls one planar spiral coil 30 to start heating to generate an aerosol that meets the requirements of one puff. In some embodiments, in each puff, the main circuit board 20 controls one of the plurality of planar spiral coils 30 to heat alone, and the amount of total particulate matter (TPM) generated by a matrix of the aerosol-generating article 200, such as the first matrix 241 or the second matrix 281, may be at least 1.5 mg, at least 1.7 mg, at least 2.0 mg, at least 2.5 mg, at least 3.0 mg, about 1.0 mg to about 5.0 mg, about 1.5 mg to about 4.0 mg, about 2.0 mg to about 4.0 mg, or about 2.0 mg to about 3.0 mg, at least 3 mg to about 7 mg, about 4 mg to about 8 mg, and about 5 mg to about 10 mg.

[0392] In some embodiments, during multiple puffs by the user, the main circuit board 20 controls a predetermined order of a plurality of planar spiral coils 30 to start heating one by one. Specifically, for example, as Figures 4 to 10 shown: during the user's first puff, the main circuit board 20 supplies power to the first planar spiral coil 30 closest to the left and from top to bottom to heat the opposite matrix, such as the first matrix 241 and the first aerosol-generating matrix 242, to generate an aerosol for one puff; during the next puff by the user, the main circuit board 20 supplies power to the second planar spiral coil 30 closest to the left and from top to bottom to heat the opposite matrix, such as the first matrix 241 and the first aerosol-generating matrix 242, to generate an aerosol for one puff; and so on. Until all the planar spiral coils 30 have been heated, all the aerosol-generating matrices in the aerosol-generating article 200, such as the first aerosol-generating matrix 242 and the second aerosol-generating matrix 282, have been consumed, prompting the user to replace the new aerosol-generating article 200. In the above embodiments, starting the planar spiral coils 30 separately in sequence instead of simultaneously means minimizing the unnecessary consumption of the aerosol-generating matrix and reducing energy waste. Or in some other embodiments, the order in which the multiple planar spiral coils 30 start in sequence according to a predetermined order is along the direction of the array arrangement.

[0393] Alternatively, in some alternative embodiments, the main circuit board 20 controls multiple planar spiral coils 30 to be individually activated sequentially, without any intervals along the arrangement direction of the planar spiral coils 30. Or, in some other alternative embodiments, the main circuit board 20 controls several planar spiral coils 30 to be individually activated in sequence, either at intervals or in a jumping manner.

[0394] In some embodiments, several or multiple planar spiral coils 30 can be energized sequentially, i.e., energized once for each user puff, so as to consistently generate an aerosol based on each puff.

[0395] In Figures 4 to 10 the embodiments of

[0396] an air flow sensor 80, such as a microphone or a MEMS sensor, etc., for sensing the user's puffing action. The main circuit board 20 energizes several or multiple planar spiral coils 30 sequentially based on the sensing result of the air flow sensor. In a preferred embodiment, the main circuit board 20 controls several planar spiral coils 30 to be activated sequentially in a predetermined order according to the user's puffing action. And in some other alternative embodiments, the main circuit board 20 controls the sequential activation of several planar spiral coils 30 at a predetermined time interval; for example, the predetermined interval is between about 30 seconds and 300 seconds.

[0397] In some embodiments, the main circuit board 20 controls several planar spiral coils 30 to be activated sequentially in a predetermined order based on the removal or replacement of the aerosol generating article 200. Specifically, in some embodiments, after the main circuit board 20 controls the above-mentioned planar spiral coils 30 to be activated sequentially, the user is prompted that the aerosol generating article 200 has been consumed, and the user is prompted to replace a new aerosol generating article 200.

[0398] And in some embodiments, after detecting that a new aerosol generating article 200 is received again in the receiving cavity of the heating device 100, the planar spiral coils 30 are re-activated sequentially in a predetermined order. The detection of the user replacing a new aerosol generating article 200 can be performed by a sensor; for example, a light sensor or a pressure sensor is provided in the aerosol generating device to sense the aerosol generating article 200 being combined with or removed from the receiving cavity, and to determine the replacement or consumption of the aerosol generating article 200 by the user based on the combination and removal.

[0399] In some embodiments, the main circuit board 20 controls the sequential activation of the planar spiral coils 30 above, which is cyclic. For example, in some embodiments, the cycle is cycled a predetermined number of times; for example, 6 times. Specifically, when the number of times the planar spiral coil 30 is activated, and / or the number of times the user sucks, reaches the predetermined number of times, a new cycle is entered to control the sequential activation of the planar spiral coil 30. Also, for example, in some embodiments, the cycle is cycled according to the removal or replacement of the aerosol generating article 200.

[0400] In some embodiments, the main circuit board 20 controls a plurality of planar spiral coils 30 to generate a magnetic field to induce a relative substrate, such as the first substrate 241 or the second substrate 281, to be heated according to the same heating curve. For example, in some specific embodiments, the main circuit board 20 controls the generation of a magnetic field to induce a relative substrate, such as the first substrate 241 or the second substrate 281, to be heated at a temperature of 300°C. Or in some other variant embodiments, the main circuit board 20 controls a plurality of planar spiral coils 30 to induce a relative substrate, such as the first substrate 241 or the second substrate 281, to be heated according to different heating curves or heating temperatures. For example, in some embodiments, the main circuit board 20 controls a plurality of planar spiral coils 30 to induce a relative substrate, such as the first substrate 241 or the second substrate 281, to have a heating temperature that increases or decreases sequentially along the heating start order.

[0401] For example, in some embodiments, the main circuit board 20 is configured to supply power to the planar spiral coils 30 sequentially according to a given power, such that the relative substrate, such as the first substrate 241 or the second substrate 281, reaches the operating temperature within a predetermined time. For example, each time the main circuit board 20 supplies power to the planar spiral coils 30, such that the relative substrate, such as the first substrate 241 or the second substrate 281, reaches a temperature of at least about 200 degrees, or at least 300 degrees, or at least 400 degrees within 0.5 s, and stops after maintaining for about 2.5 s.

[0402] In some embodiments, the planar spiral coil 30 is spirally wound with a wire material having a low resistivity. For example, the planar spiral coil 30 is spirally wound with a conductive copper wire or silver wire, etc. In some embodiments, the wire material for winding the planar spiral coil 30 has a circular cross-sectional shape; or in some other embodiments, the wire material for winding the planar spiral coil 30 has a rectangular, elliptical, or triangular cross-sectional shape, etc. In some embodiments, the wire material for winding the planar spiral coil 30 is a Litz wire, having multiple or multi-strand conductive filaments.

[0403] Alternatively, in some other variant embodiments, the planar spiral coil 30 is a track or circuit formed on a planar substrate by means such as printing, depositing, or spraying of a conductive paste. For example, in some specific embodiments, the planar spiral coil 30 is formed in the form of a thin layer by printing, depositing, or spraying on a rigid or flexible electrical insulating substrate such as ceramic, glass, quartz, or a PI film.

[0404] According to Figures 4 to 10 as shown, the heating device 100 further includes:

[0405] A first bracket 50 that at least partially defines a receiving cavity 510 for accommodating and receiving the aerosol-generating article 200. At least a portion of the first bracket 50 is disposed between the planar spiral coil 30 and the front side 150. At least a portion of the first bracket 50 is at least partially concave in shape to surround and define the receiving cavity 510.

[0406] The first bracket 50 has a generally flat shape; and the first bracket 50 has opposite front end 520 and terminal end 530; wherein, the front end 520 is mounted towards the proximal end 110, and the terminal end 530 is mounted towards the distal end 120 / the battery cell 10. In some embodiments, the length dimension of the first bracket 50 is greater than the width dimension, and the width dimension is greater than the thickness dimension.

[0407] In some embodiments, the first bracket 50 is made of a non-susceptible rigid material; for example, the first bracket 50 is made of a polymer plastic or ceramic material.

[0408] In the assembly, at least one retaining rib 182 is disposed on the inner surface of the second housing 180 for positioning and defining cooperation with a groove on the first bracket 50 to assist in the installation and fixation of the first bracket 50 within the second housing 180. A first ridge 511 is disposed on the side wall surface of the first bracket 50 near the first side 130, and a second ridge 512 is disposed on the side wall surface near the second side 140; when the aerosol-generating article 200 is received within the receiving cavity 510, the aerosol-generating article 200 is abutted and clamped from both sides in the width direction by the first ridge 511 and the second ridge 512.

[0409] According to Figures 4 to 10 as shown, the mouthpiece 111 is hollow; the mouthpiece 111 has an air inlet 113 at the proximal end 110; and an air outlet passage 112 is disposed inside the mouthpiece 111.

[0410] The air outlet channel 112 is in air flow communication with the receiving cavity 510 through a first air outlet communication port 513 and a second air outlet communication port 514 arranged on the bracket 50, and then outputs the aerosol to the air inlet 113, as shown by the arrow R30 in the figure. The first air outlet communication port 513 and the second air outlet communication port 514 are arranged on the wall of the front end 520 of the receiving cavity 510 facing the proximal end 110.

[0411] According to Figures 4 to 10 As shown, a first air inlet communication port 515 and a second air inlet communication port 516 are also arranged on the wall of the end 530 of the first bracket 50 facing the distal end 120 for allowing air to enter the receiving cavity 510 during suction.

[0412] According to Figures 4 to 10 As shown, a first air inlet 131 is arranged on the first side 130 of the housing for allowing external air to enter during suction; a second air inlet 141 is arranged on the second side 140 of the housing. The first bracket 50 further has an extension portion 52 that extends towards the end 530 and terminates at the end 530. In an embodiment, the extension portion 52 is located between the receiving cavity 510 and the end 530. In an embodiment, the extension portion 52 is hollow and has at least one cavity inside. During assembly, the extension portion 52 has at least one or more connecting portions 525; during installation, the first bracket 50 is firmly mechanically connected to the main circuit board 20 by a fastener such as a screw passing through the connecting portion 525.

[0413] The extension portion 52 of the first bracket 50 is further arranged with:

[0414] A first air inlet channel R11, extending from the first air inlet 131 to the first air inlet communication port 515;

[0415] A second air inlet channel R12, extending from the second air inlet 141 to the second air inlet communication port 516.

[0416] According to Figure 10 As shown, when the aerosol generating article 200 is received in the receiving cavity 510 of the first bracket 50, the first air inlet 251 at the second end 220 of the aerosol generating article 200 is aligned and in air flow communication with the first air inlet communication port 515; and the second air inlet 252 at the second end 220 of the aerosol generating article 200 is aligned and in air flow communication with the second air inlet communication port 515.

[0417] According to Figure 10As shown, when the aerosol-generating article 200 is received within the receiving cavity 510 of the first holder 50, the first air outlet 261 at the first end 210 of the aerosol-generating article 200 is aligned and in fluid communication with the first air outlet communication port 513; and, the second air outlet 262 at the first end 210 of the aerosol-generating article 200 is aligned and in fluid communication with the second air outlet communication port 514.

[0418] Furthermore, in use, a first airflow path extending from the first air inlet 131 to the inhalation port 113 is jointly defined by the first intake passage R11 of the first holder 50, the first air passage R21 of the aerosol-generating article 200, and the air outlet passage 112 within the mouthpiece member 111. And, the first airflow path passes through the aerosol-generating article 200 so as to deliver the aerosol generated by the first aerosol-generating substrate 242 to the inhalation port 113. And in use, a second airflow path extending from the second air inlet 141 to the inhalation port 113 is jointly defined by the second intake passage R12 of the first holder 50, the second air passage R22 of the aerosol-generating article 200, and the air outlet passage 112 within the mouthpiece member 111. And, the second airflow path passes through the aerosol-generating article 200 so as to deliver the aerosol generated by the second aerosol-generating substrate 282 to the inhalation port 113.

[0419] In an embodiment, the first airflow path is isolated from the second air passage R22 of the aerosol-generating article 200; and, the second airflow path is isolated from the first air passage R21 of the aerosol-generating article 200.

[0420] In terms of the connection and communication structure between the respective parts of the first airflow path and / or the second airflow path, on the extension portion 52 of the first holder 50, a first joint 521 extending in the width direction towards the first side 130 and a second joint 522 extending in the width direction towards the second side 140 are arranged. The first joint 521 is used to put the first intake passage R11 in fluid communication with the first air inlet 131; the second joint 522 is used to put the second intake passage R12 in fluid communication with the second air inlet 141. A flexible first seal sleeve 57 is arranged between the first joint 521 and the second housing 180. The first seal sleeve 57 at least partially surrounds the first joint 521 and elastically abuts between the first joint 521 and the second housing 180, thereby providing an airtight seal therebetween. A flexible second seal sleeve 58 is arranged between the second joint 522 and the second housing 180. The second seal sleeve 58 at least partially surrounds the second joint 522 and elastically abuts between the second joint 522 and the second housing 180, thereby providing an airtight seal therebetween.

[0421] According to Figures 4 to 10 As shown, the heating device 100 further includes:

[0422] The first elastic element 53 / the first elastic element 54 is configured to be substantially annular in shape; when the aerosol-generating article 200 is received in the receiving cavity 510, the first elastic element 53 at least partially elastically abuts between the first end 210 of the aerosol-generating article 200 and the first bracket 50 and around the first air outlet 261 of the aerosol-generating article 200 and / or the first air outlet communication port 513 of the first bracket 50, thereby providing an airtight seal between the first air outlet 261 and the first air outlet communication port 513. When the aerosol-generating article 200 is received in the receiving cavity 510, the first elastic element 54 at least partially elastically abuts between the second end 220 of the aerosol-generating article 200 and the first bracket 50 and around the second air outlet 262 of the aerosol-generating article 200 and / or the second air outlet communication port 514 of the first bracket 50, thereby providing an airtight seal between the first air outlet 261 and the first air outlet communication port 513.

[0423] Similarly, the heating device 100 further includes:

[0424] The second elastic element 55 / the second elastic element 56 is configured to be substantially annular in shape and is close to or arranged at the front end 520 of the first bracket 50; when the aerosol-generating article 200 is received in the receiving cavity 510, the second elastic element 55 at least partially elastically abuts between the second end 220 of the aerosol-generating article 200 and the first bracket 50 and around the first air inlet 251 of the aerosol-generating article 200 and / or the first air inlet communication port 515 of the first bracket 50, thereby providing an airtight seal between the first air inlet communication port 515 and the first air inlet 251. When the aerosol-generating article 200 is received in the receiving cavity 510, the second elastic element 56 at least partially elastically abuts between the second end 220 of the aerosol-generating article 200 and the first bracket 50 and around the second air inlet 252 of the aerosol-generating article 200 and / or the second air inlet communication port 516 of the first bracket 50, thereby providing an airtight seal between the second air inlet communication port 516 and the second air inlet 252.

[0425] The first elastic element 53 / the first elastic element 54, the second elastic element 55 / the second elastic element 56 are made of flexible silicone or thermoplastic elastomer and other elastic materials, so that they have elasticity.

[0426] In an embodiment, the first elastic element 53 at least partially extends from the first air outlet communication port 513 into the receiving cavity 510, and the first elastic element 54 at least partially extends from the second air outlet communication port 514 into the receiving cavity 510; the second elastic element 55 at least partially extends from the first air inlet communication port 515 into the receiving cavity 510, and the second elastic element 56 at least partially extends from the second air inlet communication port 516 into the receiving cavity 510. When the aerosol generating article 200 is received in the receiving cavity 510, the aerosol generating article 200 is elastically clamped or held between the first elastic elements 53 / 54 and the second elastic elements 55 / 56.

[0427] In some embodiments, the extension portion 52 is open at the end 530 and defines an opening. Accordingly, the following are further arranged in the heating device 100:

[0428] A closing element 70, located between the battery cell 10 and the first bracket 50. The closing element 70 is coupled to the end 530 of the first bracket 50 and closes the opening at the end 530 of the extension portion 52. The closing element 70 is connected to the extension portion 52 through a mechanical connection mechanism such as a snap or a screw.

[0429] According to Figure 6 、 Figure 7 、 Figure 8 and Figure 10 As shown, a receiving wall 529 extending towards the rear side 160 is arranged on the extension portion 52 of the first bracket 50; the receiving wall 529 is used for receiving and holding the airflow sensor 80. After installation, the airflow sensor 80 is located between the receiving cavity 510 and the battery cell 10. The airflow sensor 80 is located between the extension portion 52 of the first bracket 50 and the main circuit board 20. The airflow sensor 80 is welded to the first portion 21 of the main circuit board 20 through conductive pins to form an electrical connection. And, a flexible wrapping element 81 is arranged between the airflow sensor 80 and the receiving wall 529. The wrapping element 81 elastically abuts between the airflow sensor 80 and the receiving wall 529 to stably hold the airflow sensor 80 within the receiving wall 529.

[0430] And generally, the airflow sensor 80 includes:

[0431] A first sensing surface facing the front side 150 / extension portion 52, the first sensing surface being configured to sense the pressure in the first air flow channel and / or the second air flow channel; and a second sensing surface facing the rear side 160 / main circuit board 20, the second sensing surface being in communication with the outside atmosphere to sense the pressure of the outside atmosphere. The air flow sensor 80 is configured to determine the user's suction action based on the difference between the pressure sensed by the first sensing surface and the pressure sensed by the second sensing surface. In use, the wrapping element 81 is further configured to wrap the air flow sensor 80 circumferentially, thereby hermetically isolating the first sensing surface and the second sensing surface of the air flow sensor 80.

[0432] According to Figures 4 to 10 As shown, a partition wall 53 extending towards and terminating at the end 530 is further arranged within the extension portion 52 for isolating the first intake channel R11 and the second intake channel R12.

[0433] According to Figures 4 to 10 As shown, a first sensing hole 531 and a second sensing hole 532 are further arranged on both sides of the partition wall 53 in the width direction within the extension portion 52. The first sensing surface of the air flow sensor 80 / held within the receiving wall 529 communicates with the first intake channel R11 / first air flow channel through the first sensing hole 531 for sensing the air flow change flowing through the first intake channel R11 / first air flow channel during user suction. The first sensing surface of the air flow sensor 80 communicates with the second intake channel R12 / second air flow channel through the second sensing hole 532 for sensing the air flow change flowing through the second intake channel R12 / second air flow channel during user suction.

[0434] According to Figures 4 to 10 As shown, a first shielding wall 527 and a second shielding wall 528 extending longitudinally are further arranged within the extension portion 52. The first shielding wall 527 and the second shielding wall 528 are respectively located on both sides of the partition wall 53 in the width direction of the first bracket 50 and / or the extension portion 52. The first shielding wall 527 and / or the second shielding wall 528 are arranged parallel to the partition wall 53. Also, the first shielding wall 527 extends from the first intake communication port 515 towards the end 530, and the second shielding wall 528 extends from the second intake communication port 516 towards the end 530. The extension length of the first shielding wall 527 and / or the second shielding wall 528 is less than the length of the partition wall 53. The first shielding wall 527 and / or the second shielding wall 528 do not extend to the end 530 and have a gap with the end 530.

[0435] In an embodiment, the first sensing hole 531 is located between the first shielding wall 527 and the partition wall 53; and the first shielding wall 527 isolates the first sensing hole 531 from the first intake passage R11 to prevent residues or aerosol condensate in the first intake passage R11 from flowing to the first sensing hole 531 and causing blockage. And the first sensing hole 531 is in air flow communication with the first intake passage R11 through the gap between the first shielding wall 527 and the end 530, so as to sense the air flow change in the first air flow passage. Similarly, the second sensing hole 532 is located between the second shielding wall 528 and the partition wall 53; and the second shielding wall 528 isolates the second sensing hole 532 from the second intake passage R12 to prevent residues or aerosol condensate in the second intake passage R12 from flowing to the second sensing hole 532 and causing blockage. And the second sensing hole 532 is in air flow communication with the second intake passage R12 through the gap between the second shielding wall 528 and the end 530, so as to sense the air flow change in the first air flow passage.

[0436] In an embodiment, the air flow sensor 60 is in communication with both the first air flow passage and the second air flow passage. When there is a suction air flow in at least one of the first air flow passage and the second air flow passage, the air flow sensor 60 can be triggered.

[0437] According to Figures 4 to 10 As shown, the first intake passage R11 and the second intake passage R12 are substantially completely symmetric. Specifically, as shown according to Figure 10 the first intake passage R11 and the second intake passage R12 are substantially mirror-symmetric in the width direction. The first intake passage R11 and / or the second intake passage R12 are arranged in a meandering manner.

[0438] Specifically Figures 4 to 10 As shown, a first air flow guiding wall 523 and a second air flow guiding wall 524 arranged longitudinally are further disposed in the extension portion 52. The first air flow guiding wall 523 extends from the first intake communication port 515 towards the end 530 and does not extend to or terminate at the end 530, so there is still a gap between the first air flow guiding wall 523 and the end 530. The second air flow guiding wall 524 extends from the second intake communication port 516 towards the end 530 and does not extend to or terminate at the end 530, so there is still a gap between the second air flow guiding wall 524 and the end 530.

[0439] In use, as shown in Figure 10As shown in the first intake passage R11, the air that enters the extension portion 52 from the first joint 521 is first guided by the first air flow guiding wall 523 to flow toward the end 530, and then passes through the space between the first air flow guiding wall 523 and the first shielding wall 527 in the direction from the end 530 toward the front end 520 to reach the first intake communication port 515, delivering the air to the first intake communication port 515. Alternatively, the first intake passage R11 includes a first path portion 5251 extending from the first joint 521 toward the end 530 and a second path portion 5252 extending from the end 530 toward the front end 520 to the first intake communication port 515. Furthermore, the first intake passage R11 extends in a circuitous manner. And in the first intake passage R11, the path length of the first path portion 5251 is less than the path length of the second path portion 5252.

[0440] Similarly, during use, as Figure 10 As shown in the second intake passage R12, the air that enters the extension portion 52 from the second joint 522 is first guided by the second air flow guiding wall 524 to flow toward the end 530, and then passes through the space between the second air flow guiding wall 524 and the second shielding wall 528 in the direction from the end 530 toward the front end 520 to reach the second intake communication port 516, delivering the air to the second intake communication port 516. Alternatively, the second intake passage R12 includes a third path portion 5261 extending from the second joint 522 toward the end 530 and a fourth path portion 5262 extending from the end 530 toward the front end 520 to the second intake communication port 516. Furthermore, the second intake passage R12 extends in a circuitous manner. And in the second intake passage R12, the path length of the third path portion 5261 is less than the path length of the fourth path portion 5262.

[0441] According to Figures 4 to 10 As shown, the heating device 100 further includes:

[0442] A second bracket 40 for accommodating and supporting the planar spiral coil 30. The second bracket 40 is arranged near the rear side 160; or the second bracket 40 is located between the planar spiral coil 30 and the second housing 180. Specifically, after assembly, the first bracket 50 and the second bracket 40 accommodate and hold the planar spiral coil 30 therebetween.

[0443] According to Figures 4 to 10As shown, a second bracket 40 is provided with an annular flange 41 and an annular flange 42 on a surface facing a front side 150 and / or a first bracket 50. At least one or more receiving cavities 43 are defined between the annular flange 41 and the annular flange 42. After assembly, a plurality of planar spiral coils 30 are respectively received and installed in the plurality of receiving cavities 43, and are respectively surrounded by the annular flange 41. A plurality of notches are further arranged on the annular flange 41 for allowing conductive leads of the planar spiral coils 30 to pass through the notches to the outside of the annular flange 41, and then penetrate through the second bracket 40 and be connected to a main circuit board 20.

[0444] It should be noted that the description and drawings of the present application give preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Further, for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present application.

Claims

1. An aerosol generating system, characterized in that, Comprising: A replaceable aerosol-generating article, comprising at least one aerosol-generating substrate; The at least one aerosol-generating substrate is configured to generate an aerosol when heated; A reusable heating device for removably receiving the aerosol-generating article and heating at least one aerosol-generating substrate of the aerosol-generating article; At least one air inlet, at least one air suction port, and at least one air flow channel located between the at least one air inlet and the at least one air suction port; the at least one air flow channel is arranged to define an air flow path from the at least one air inlet to the at least one air suction port for delivering the aerosol to the air suction port; The at least one air inlet and the at least one air suction port are arranged on the heating device; A part of the at least one air flow channel is arranged on the heating device and a part is arranged on the aerosol-generating article.

2. The aerosol generating system according to claim 1, wherein The aerosol-generating article further comprises: An outer body defining an enclosed volume, the outer body including at least one air inlet and at least one air outlet, and at least one air channel defined through the enclosed volume between the at least one air inlet and the at least one air outlet; A part of the at least one air flow channel is defined by the at least one air channel.

3. The aerosol generating system according to claim 2, wherein The at least one air channel extends straight through the aerosol-generating article.

4. The aerosol generating system according to claim 2 or 3, characterized in that, The at least one air flow channel further comprises: At least one air outlet channel; when the aerosol-generating article is received in the heating device, the at least one air outlet channel fluidly connects the at least one air outlet to the at least one air suction port for delivering the aerosol to the at least one air suction port.

5. The aerosol generating system according to claim 2 or 3, characterized in that, The at least one air flow channel further comprises: At least one air inlet channel; when the aerosol-generating article is received in the receiving cavity, the at least one air inlet channel connects the at least one air inlet to the at least one air inlet of the aerosol-generating article to allow air to enter the aerosol-generating article.

6. The aerosol generating system according to claim 1 or 2, wherein The heating device further comprises: A receiving cavity for removably receiving the aerosol-generating article; At least one air inlet channel extending from the at least one air inlet to the receiving cavity; At least one air outlet channel extending from the receiving cavity to the at least one air suction port; When the aerosol-generating article is received in the receiving cavity, the aerosol-generating article provides or establishes fluid communication between the at least one air inlet channel and the at least one air outlet channel.

7. The aerosol generating system according to claim 6, characterized in that, The at least one air inlet channel extends in a meandering manner within the heating device.

8. The aerosol generating system according to claim 6, wherein, The heating device further comprises: A proximal end and a distal end facing away from each other in a longitudinal direction; The at least one air inlet channel is located between the receiving cavity and the distal end; the at least one air outlet channel is located between the receiving cavity and the proximal end.

9. The aerosol generating system according to claim 6, wherein The heating device further comprises: A proximal end and a distal end facing away from each other in a longitudinal direction; The at least one intake channel includes a first path portion and a second path portion; wherein, at least a part of the first path portion extends from the at least one intake port towards the distal end; the second path portion extends from the first path portion towards the proximal end to the receiving cavity.

10. The aerosol generating system according to claim 6, characterized in that, The heating device further includes: A proximal end and a distal end opposite to each other in the longitudinal direction; At least one heater; when the aerosol-generating article is received in the receiving cavity, the at least one heater is configured to heat at least one aerosol-generating substrate of the aerosol-generating article; A battery cell, located between the receiving cavity and the distal end, for supplying power to the at least one heater; The at least one intake channel is arranged to be located between the battery cell and the receiving cavity.

11. The aerosol generating system according to any one of claims 1 to 3, characterized in that, The heating device further includes: At least one heater; when the aerosol-generating article is received in the receiving cavity, the at least one heater is configured to heat at least one aerosol-generating substrate of the aerosol-generating article; An airflow sensor, configured to detect a change in the airflow flowing through the at least one airflow channel during user suction; A controller, configured to control the at least one heater to heat one of the at least one aerosol-generating substrates individually each time according to the sensing result of the airflow sensor, thereby generating aerosol satisfying one puff.

12. The aerosol generating system according to any one of claims 1 to 3, characterized in that, The intake port includes a first intake port and a second intake port arranged at intervals; The airflow channel includes: A first airflow channel, formed between the first intake port and the at least one suction port, defining a first airflow path for delivering aerosol to the suction port; A second airflow channel, formed between the second intake port and the at least one suction port, defining a first airflow path for delivering aerosol to the suction port.

13. The aerosol generating system according to claim 12, wherein, The first airflow channel at least partially passes through the aerosol-generating article; The second airflow channel at least partially passes through the aerosol-generating article; The portion of the first airflow channel within the aerosol-generating article is isolated from the portion of the second airflow channel within the aerosol-generating article.

14. The aerosol generating system according to claim 12, wherein, The first airflow channel and the second airflow channel are arranged substantially mirror-symmetrically.

15. The aerosol generating system according to claim 12, characterized in that, Further included is: An airflow sensor, in airflow communication with both the first airflow channel and the second airflow channel, and thus configured to sense a change in the airflow flowing through the first airflow channel and / or the second airflow channel.

16. The aerosol generating system according to claim 12, wherein, The heating device further includes: A proximal end and a distal end opposite to each other in the longitudinal direction, and a first side and a second side opposite to each other in the width direction; A receiving cavity, for removably receiving the aerosol-generating article; The first intake port is arranged on the first side and is located between the receiving cavity and the distal end; The second intake port is arranged on the second side and is located between the receiving cavity and the distal end.

17. The aerosol generating system according to claim 12, wherein The heating device further includes: A proximal end and a distal end opposite to each other in the longitudinal direction; A receiving cavity, for removably receiving the aerosol-generating article; A first bracket, at least partially defining the receiving cavity; the first bracket includes an extension portion extending from the receiving cavity towards the distal end; The first air flow channel includes a first air inlet channel extending from the first air inlet port to the receiving chamber; the second air flow channel includes a second air inlet channel extending from the second air inlet port to the receiving chamber; the first air inlet channel and the second air inlet channel are formed or defined in the extension part and isolated from each other in the extension part.

18. The aerosol generating system according to claim 17, wherein The first bracket includes a front end mounted toward the proximal end, and a rear end facing away from the front end; A partition wall extending toward the end and terminating at the end is arranged in the extension portion; a first sensing hole and a second sensing hole are arranged on both sides of the partition wall respectively; An airflow sensor is configured to sense changes in airflow flowing through the first air intake passage and / or the second air intake passage; the airflow sensor is connected to the airflow of the first air intake passage through the first sensing hole, and the airflow sensor is connected to the airflow of the second air intake passage through the second sensing hole.

19. The aerosol generating system according to claim 18, wherein A first shielding wall extending toward the end and having a gap with the end is arranged in the extension portion; the first sensing hole is located between the first shielding wall and the partition wall, and is connected to the first air inlet channel through the gap between the first shielding wall and the end; And / or, a second shielding wall extending toward the end and having a gap with the end is arranged in the extension part; the second sensing hole is located between the second shielding wall and the partition wall, and is connected to the airflow of the second air intake channel through the gap between the second shielding wall and the end.

20. The aerosol generating system according to any one of claims 1 to 3, characterized in that, The aerosol-generating article is substantially configured to be in the shape of a sheet; The aerosol-generating article is asymmetric along the length direction and / or the width direction.

21. The aerosol generating system according to claim 20, wherein, The heating device also includes: a receiving chamber for removably receiving the aerosol-generating article; The receiving cavity is arranged to enable the aerosol generating product to be received in the receiving cavity only according to a first predetermined direction, and to prevent the aerosol generating product from being received in the receiving cavity according to a second predetermined direction; the second predetermined direction is defined by flipping the aerosol generating product in the first predetermined direction 180 degrees along the length direction and / or the width direction.

22. The aerosol generating system according to claim 1, wherein, The aerosol-generating article further comprises: an outer body defining an enclosed volume, the aerosol-generating substrate being contained and retained within the outer body; At least one substrate is located within the outer body and can generate heat by being penetrated by the changing magnetic field, thereby heating the at least one aerosol-generating substrate to generate an aerosol.

23. The aerosol generating system according to claim 22, wherein The heating device comprises: at least one induction heater; when the aerosol-generating article is received in the receiving cavity, the at least one induction heater is configured to generate a changing magnetic field that penetrates the at least one substrate.

24. The aerosol generating system according to claim 23, wherein The thermal conductivity of at least part of the outer body is lower than 20 W / mk, so as to prevent the heat of the base body from being transferred to the heating device as much as possible.

25. The aerosol generating system according to claim 23, wherein The at least one induction heater is configured to be substantially planar; And / or, the at least one induction heater comprises or is a planar spiral coil.

26. The aerosol generating system according to claim 23, wherein The at least one induction heater is arranged substantially parallel to the receiving cavity.

27. The aerosol generating system according to any one of claims 1 to 3, characterized in that, The heating device further comprises: A proximal end and a distal end facing away from each other in the longitudinal direction; A receiving cavity for removably receiving the aerosol-generating article; At least one heater; when the aerosol-generating article is received in the receiving cavity, the at least one heater is configured to heat at least one aerosol-generating matrix of the aerosol-generating article; A battery cell located between the receiving cavity and the distal end for powering the at least one heater.

28. The aerosol generating system according to claim 27, wherein The heating device further comprises: A main circuit board including a first portion and a second portion arranged along the length direction; wherein, the first portion faces the receiving cavity, and the second portion faces the battery cell.

29. The aerosol generating system according to claim 28, wherein The at least one heater is electrically connected to the first portion; and / or, the battery cell is electrically connected to the second portion.

30. The aerosol generating system according to claim 28, wherein A controller is arranged on the first portion, and the controller is configured to control the battery cell to supply power to the at least one heater.

31. The aerosol generating system according to claim 28, characterized in that, The heating device further comprises: A charging interface arranged at the distal end; A charging circuit board arranged between the battery cell and the distal end and configured to control the charging interface to charge the battery cell; the charging circuit board is connected to the second portion of the main circuit board.

32. The aerosol generating system according to claim 27, wherein, The heating device further comprises: A housing at least partially defining the outer surface of the heating device and having a front side and a rear side facing away from each other in the thickness direction; the aerosol-generating article can be received in the receiving cavity through the front side of the housing or removed from the receiving cavity; The at least one heater is arranged between the receiving cavity and the rear side.

33. The aerosol generating system according to claim 27, wherein, The heating device further comprises: A first bracket at least partially defining the receiving cavity; the first bracket includes an extension portion located between the receiving cavity and the battery cell; An airflow sensor configured to detect a change in the airflow flowing through at least one airflow channel during user suction; the airflow sensor is received or held in the extension portion of the first bracket.

34. The aerosol generating system according to any one of claims 1 to 3, characterized in that, The heating device further comprises: A receiving cavity for removably receiving the aerosol-generating article; A housing at least partially defining the outer surface of the heating device and having a front side and a rear side facing away from each other in the thickness direction; the housing defines an opening at the front side, and the aerosol-generating article can be received in the receiving cavity through the opening or removed from the receiving cavity; A door cover connected to the housing and capable of moving relative to the housing and thus selectively configured between an open position and a closed position; the door cover opens the opening in the open position and closes the opening in the closed position.

35. The aerosol generating system according to claim 34, characterized in that, The door cover is arranged to be rotatable relative to the housing and thus selectively configured between the open position and the closed position; And / or, the door cover is arranged to be linearly movable relative to the housing and thus selectively configured between the open position and the closed position.

36. The aerosol generating system according to claim 35, wherein, The heating device further comprises: A pin shaft extending in the longitudinal direction; the door cover is rotatably connected to the housing through the pin shaft and can rotate relative to the housing about the pin shaft as an axis.

37. The aerosol generating system according to claim 35, wherein The door cover has a protruding portion; When the aerosol-generating article is received in the receiving cavity, at least part of the protruding portion of the door cover extends from the opening into the receiving cavity to abut against the surface of the aerosol-generating article, thereby at least partially supporting or holding the aerosol-generating article.

38. The aerosol generating system according to claim 35, wherein The door cover is hollow; and / or, at least one heat-insulating cavity is arranged in the door cover for heat insulation.

39. The aerosol generating system according to claim 35, wherein, At least one first magnetic element is arranged on the door cover; The heating device includes at least one second magnetic element; when the door cover is in the closed position, the first magnetic element and the second magnetic element are magnetically adsorbed to keep the door cover in the closed position.

40. The aerosol generating system according to any one of claims 1 to 3, characterized in that, The heating device further includes: a front side and a rear side facing away from each other in the thickness direction; a receiving cavity for removably receiving the aerosol-generating article; at least one heater arranged between the receiving cavity and the rear side; when the aerosol-generating article is received in the receiving cavity, the at least one heater is configured to heat at least one aerosol-generating matrix of the aerosol-generating article; a second bracket at least partially arranged between the at least one heater and the rear side and at least partially accommodating or supporting the at least one heater.

41. The aerosol generating system according to claim 40, wherein, Arranged on the second bracket are: at least one annular convex edge surrounding the at least one heater.

42. An aerosol generating system, characterized in that, Including: a replaceable aerosol-generating article, including: at least one aerosol-generating matrix; the at least one aerosol-generating matrix is configured to generate aerosol when heated; an outer body defining a closed volume, the outer body including at least one air inlet and at least one air outlet, and at least one air passage defined through the closed volume between the at least one air inlet and the at least one air outlet; a reusable heating device for removably receiving the aerosol-generating article and heating at least one aerosol-generating matrix of the aerosol-generating article; the heating device includes: a receiving cavity for removably receiving the aerosol-generating article; at least one air inlet and at least one air suction port; at least one air inlet passage extending from the at least one air inlet to the receiving cavity; at least one air outlet passage extending from the receiving cavity to the at least one air suction port; When the aerosol-generating article is received in the receiving cavity, the at least one air inlet passage and the at least one air outlet passage are in air flow communication provided or established by the at least one air passage.

43. An aerosol generating system, characterized in that, Including: a replaceable aerosol-generating article including at least one aerosol-generating matrix; the at least one aerosol-generating matrix is configured to generate aerosol when heated; a reusable heating device for removably receiving the aerosol-generating article and heating at least one aerosol-generating matrix of the aerosol-generating article; the heating device includes: a first air inlet and a second air inlet arranged at intervals; an air suction port; a first air flow passage formed between the first air inlet and the at least one air suction port and at least partially passing through the aerosol-generating article; A second air flow channel is formed between the second air inlet and the at least one suction port and at least partially passes through the aerosol generating article.

44. A heating device configured to heat a substantially sheet-like aerosol-generating article to generate an aerosol; characterized in that, The heating device comprises: a receiving cavity for receiving the aerosol generating article; at least one air inlet and at least one suction port; at least one air inlet channel extending from the at least one air inlet to the receiving cavity; at least one air outlet channel extending from the receiving cavity to the at least one suction port; When the aerosol generating article is received in the receiving cavity, an air flow communication between the at least one air inlet channel and the at least one air outlet channel is provided or established by the aerosol generating article.

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