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; 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; the heating device comprises: a first support at least partially defining a receiving cavity for receiving an aerosol-generating article; an airflow sensor configured to detect a change in airflow flowing through the aerosol-generating system when a user smokes; the airflow sensor is accommodated or held in the first bracket and avoids the receiving cavity in the longitudinal direction of the heating device. According to the aerosol-generating system, the air flow sensor is accommodated and held in the heating device by the first bracket defining the receiving cavity, and the air flow sensor is staggered from the receiving cavity in the longitudinal direction.

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-like aerosol-generating substrate to gradually drive a partial section or position of the aerosol-generating substrate onto a heating element for heating; such a heating device drives and heats the tape-like aerosol-generating 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 a closed volume, the outer body including at least one air inlet and at least one air outlet, and an air passage defined through the closed 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 to 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 to surround the at least one air inlet.

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

[0017] When the aerosol-generating article is received in the receiving cavity, the at least one outlet channel 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 fluidly connect the at least one outlet channel to 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 inlet channel;

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

[0022] In some embodiments, the at least one second elastic element is further configured to fluidly connect the at least one inlet channel to 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 varying magnetic field according to the sensing result of the airflow 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 generating 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 generating article;

[0041] A proximal end and a distal end opposite to each other in the 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 in the longitudinal 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 varying 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 varying 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 is defined with an opening located 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 and thus 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 and thus 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 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.

[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 length 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 suction; 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;

[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 opposite to each other in the longitudinal direction;

[0087] The at least one air inlet 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 air inlet 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 opposite to each other in the 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, the heating device further comprises:

[0094] A proximal end and a distal end opposite to each other in the 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 the change 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 in a substantially mirror-symmetrical manner.

[0106] In some embodiments, it further includes:

[0107] A proximal end and a distal end facing away from each other in the length 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 length 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 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 an enclosed 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 an enclosed 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 inlet; 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 inlet 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] 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] 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 intake;

[0149] At least one outlet 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 outlet channel is in fluid communication with the at least one air outlet for delivering the aerosol to the at least one air intake;

[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 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 fluid 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 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.

[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 air flow channel located between the at least one air inlet and the at least one 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 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 air flow 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 suction port airflow for delivering aerosol to the at least one suction 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 suction port;

[0174] When the aerosol-generating article is received in the receiving cavity, the aerosol-generating article provides or establishes fluid communication of 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 the 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 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.

[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, 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 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 suction;

[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 aerosol satisfying one puff.

[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 suction 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, the first air flow channel at least partially passes through the aerosol generating article;

[0196] The second air flow channel at least partially passes through the aerosol generating article;

[0197] The portion of the first air flow channel within the aerosol generating article is isolated from the portion 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 substantially mirror-symmetrically.

[0199] In some embodiments, further comprising:

[0200] An air flow sensor in air flow communication with both the first air flow channel and the second air flow channel and 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 comprises:

[0202] A proximal end and a distal end facing away from each other in the length 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 comprises:

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

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

[0209] 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;

[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 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, the aerosol-generating substrate being contained and retained within the outer body;

[0223] 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.

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

[0225] 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.

[0226] 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.

[0227] In some embodiments, the at least one induction heater is configured to be 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] proximal and distal ends facing away from each other along the length;

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

[0233] 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;

[0234] A battery core is located between the receiving cavity and the distal end and is used to supply power to the at least one heater.

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

[0236] The main circuit board comprises a first part and a second part arranged along a length direction; wherein the first part is opposite to the receiving cavity, and the second part is opposite to the battery core.

[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 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;

[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 the 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 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;

[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 to be 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 to be selectively configured between the open position and the closed position.

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

[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, so as to at least partly support or hold 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 comprises:

[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 following are arranged on the second bracket:

[0268] At least one annular flange 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 an aerosol when heated;

[0272] 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 passage defined through the enclosed 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 includes:

[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, including at least one aerosol generating substrate; the at least one aerosol generating substrate is configured to generate an 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 inhalation port;

[0284] A first air flow channel formed between the first air inlet and the at least one inhalation 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 inhalation 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 inhalation 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 inhalation port;

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

[0292] Another embodiment of the present application further provides an aerosol-generating system, including:

[0293] 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;

[0294] 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:

[0295] A first bracket at least partially defining a receiving cavity for receiving the aerosol-generating article;

[0296] An airflow sensor configured to detect a change in the airflow flowing through the aerosol generating system during user puffing; the airflow sensor is received or held in the first bracket and is spaced from the receiving cavity along the longitudinal direction of the heating device.

[0297] In some embodiments, the heating device further comprises:

[0298] 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;

[0299] 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.

[0300] In some embodiments, the heating device further comprises a proximal end and a distal end facing away from each other in the length direction, and:

[0301] A battery cell located between the receiving cavity and the distal end for supplying power to the at least one heater;

[0302] A main circuit board including a first part and a second part arranged in the length direction; wherein, the controller is arranged in the first part, and the airflow sensor is electrically connected to the first part; the battery cell is electrically connected to the second part.

[0303] In some embodiments, it further comprises: an inhalation port;

[0304] A first airflow channel defining a first airflow path for delivering aerosol to the inhalation port;

[0305] A second airflow channel defining a second airflow path for delivering aerosol to the inhalation port;

[0306] The airflow sensor is in simultaneous airflow communication with both the first airflow channel and the second airflow channel, and can thus sense a change in the airflow flowing through the first airflow channel and / or the second airflow channel.

[0307] In some embodiments, a partition wall is further arranged in the first bracket for separating the first airflow channel and the second airflow channel; a first sensing hole and a second sensing hole are respectively arranged on both sides of the partition wall;

[0308] The airflow sensor is in airflow communication with the first airflow channel through the first sensing hole and in airflow communication with the second airflow channel through the second sensing hole.

[0309] In some embodiments, a first shielding wall is further disposed within the first bracket for shielding aerosol condensate in the first air inlet passage from flowing towards the first sensing hole;

[0310] and / or, a second shielding wall is further disposed within the first bracket for shielding aerosol condensate in the second air inlet passage from flowing towards the second sensing hole.

[0311] In some embodiments, the heating device further comprises: a first air inlet and a second air inlet disposed at intervals;

[0312] the first air flow passage comprises a first air inlet passage extending from the first air inlet to the receiving cavity; the second air flow passage comprises a second air inlet passage extending from the second air inlet to the receiving cavity; the air flow sensor is in air communication with both the first air inlet passage and the second air inlet passage.

[0313] In some embodiments, the first air inlet passage and the second air inlet passage are formed or defined within the first bracket and are isolated from each other within the first bracket.

[0314] In some embodiments, the first air inlet passage and the second air inlet passage are substantially mirror-symmetrical.

[0315] In some embodiments, the first air inlet passage and the second air inlet passage are arranged to extend circuitously within the first bracket.

[0316] In some embodiments, the heating device further comprises a proximal end and a distal end facing away from each other in the longitudinal direction, and:

[0317] a battery cell, located between the receiving cavity and the distal end for power supply;

[0318] the first bracket comprises an extension portion located between the receiving cavity and the battery cell; the air flow sensor is received or held in the extension portion of the first bracket.

[0319] In some embodiments, the aerosol-generating article is substantially configured to be in a sheet shape;

[0320] the aerosol-generating article is asymmetric in the length direction and / or the width direction.

[0321] In some embodiments, the heating device further comprises:

[0322] a receiving cavity for removably receiving the aerosol-generating article;

[0323] 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.

[0324] In some embodiments, the aerosol-generating article further comprises:

[0325] an outer body defining an enclosed volume, the aerosol-generating substrate being contained and retained within the outer body;

[0326] 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.

[0327] In some embodiments, the heating device comprises:

[0328] 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.

[0329] 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.

[0330] In some embodiments, the heating device further comprises:

[0331] A front side and a rear side opposite to each other in a thickness direction;

[0332] a receiving chamber for removably receiving the aerosol-generating article;

[0333] At least one heater is disposed between the receiving cavity and the back 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.

[0334] In some embodiments, the at least one heater is configured to be substantially planar;

[0335] And / or, the at least one heater comprises or is a planar spiral coil.

[0336] In some embodiments, the at least one heater is arranged substantially parallel to the receiving cavity.

[0337] In some embodiments, the heating device further comprises:

[0338] A second support, 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.

[0339] Another embodiment of the present application further provides an aerosol generating system, comprising:

[0340] 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;

[0341] A reusable heating device for removably receiving the aerosol generating article and heating at least one aerosol generating substrate of the aerosol generating article;

[0342] An inhalation port;

[0343] A first air flow channel defining a first air flow path for delivering the aerosol to the inhalation port;

[0344] A second air flow channel defining a second air flow path for delivering the aerosol to the inhalation port;

[0345] An air flow sensor disposed to be in air flow communication with both the first air flow channel and the second air flow channel, and thus capable of sensing a change in the air flow flowing through the first air flow channel and / or the second air flow channel.

[0346] 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 aerosol generating substrate configured to generate an aerosol when heated; the heating device includes a front side and a rear side facing away from each other in the thickness direction, and:

[0347] A first support at least partially defining a receiving cavity for receiving the aerosol generating article;

[0348] 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;

[0349] An air flow sensor configured to detect a change in the air flow flowing through the aerosol generating system during user inhalation; the air flow sensor is accommodated or held by the first support and is spaced apart from the receiving cavity in the longitudinal direction of the heating device.

[0350] 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 aerosol-generating substrate configured to generate an aerosol when heated; the heating device includes:

[0351] A receiving cavity for receiving the aerosol-generating article;

[0352] 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;

[0353] A first air inlet and a second air inlet;

[0354] A first air inlet passage arranged to extend from the first air inlet to the receiving cavity for providing a first air inlet path for air to enter the receiving cavity during user suction;

[0355] A second air inlet passage arranged to extend from the second air inlet to the receiving cavity for providing a second air inlet path for air to enter the receiving cavity during user suction;

[0356] An airflow sensor arranged to be in airflow communication with both the first air inlet passage and the second air inlet passage, and thus capable of sensing changes in the airflow flowing through the first air inlet passage and / or the second air inlet passage.

[0357] In the above aerosol-generating system, the airflow sensor is accommodated and held by a first bracket defining the receiving cavity within the heating device, and the airflow sensor is longitudinally offset from the receiving cavity. Description of the Drawings

[0358] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplary illustrations do not constitute limitations 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.

[0359] Figure 1 is a schematic diagram of an aerosol-generating system provided by an embodiment;

[0360] Figure 2 is Figure 1 a schematic diagram of removing or replacing the aerosol-generating article after the middle door cover is opened;

[0361] Figure 3 is Figure 2 an exploded schematic diagram of one perspective of the aerosol-generating article in;

[0362] Figure 4 is Figure 1Exploded schematic view of a perspective of the middle heating device;

[0363] Figure 5 is Figure 2 Schematic view of a perspective after the first housing of the middle heating device is removed;

[0364] Figure 6 is Figure 2 Schematic view of another perspective after the first housing of the middle heating device is removed;

[0365] Figure 7 is Figure 4 Structural schematic view of another perspective of the first bracket in the middle;

[0366] Figure 8 is Figure 7 Structural schematic view of another perspective of the first bracket in the middle;

[0367] Figure 9 is Figure 1 Cross-sectional schematic view of a perspective of the aerosol generating system in the middle;

[0368] Figure 10 is Figure 1 Cross-sectional schematic view of a perspective of the aerosol generating system in the middle. Detailed implementation manners

[0369] For the convenience of understanding this application, the following will further describe this application in more detail in combination with the drawings and specific implementation manners.

[0370] 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.

[0371] 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 an aerosol generating system.

[0372] 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:

[0373] 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.

[0374] In Figure 1 and Figure 2In the illustrated embodiment, 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 of a single integral housing, or the longitudinally extended housing can be formed of two or more separable bodies. In some examples, all or only a portion of the housing can be formed of 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 the illustrated embodiment, 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.

[0375] 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 embodiment, the heating device 100 includes:

[0376] 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.

[0377] 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 other variant embodiments, the charging interface 121 can also be a USB2.0, USB 3.0, or USB 4pin interface.

[0378] 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 made 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 inseparable from each other.

[0379] 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 arranged.

[0380] According to Figure 1 and Figure 2 As shown, the housing of the heating device 100 includes:

[0381] A first housing 170 and a second housing 180; the first housing 170 is close to or defines the front side 150, and the second housing 180 is close to or defines the rear side 160.

[0382] Figure 1 and Figure 2 In the embodiments of

[0383] 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, so that the heating device 100 and / or the housing of the heating device 100 is configured to be flat.

[0384] According to Figure 2 As shown, the aerosol-generating article 200 is generally configured to be sheet-shaped; being sheet-shaped can be characterized as 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.

[0385] Correspondingly, the heating device 100 includes:

[0386] A receiving cavity 510, located inside the housing; and the receiving cavity 510 is substantially 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.

[0387] According to Figure 1 and Figure 2 As shown, the receiving cavity 510 defines an opening 171 on 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.

[0388] According to Figure 1 and Figure 2 as shown, the heating device 100 further includes:

[0389] 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 operably receive or remove the aerosol-generating article 200 removably in the receiving cavity 510; in the closed position, the door cover 190 shields and closes the opening 171 to prevent a user from operably receiving or removing the aerosol-generating article 200 removably in the receiving cavity 510.

[0390] 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 alternative 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 alternative embodiments, the pin shaft 181 can be located on the door cover 190.

[0391] Or in some other alternative 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.

[0392] According to Figure 2 and Figure 6 as shown, the aerosol-generating article 200 having a substantially sheet-like shape has a notch 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.

[0393] 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.

[0394] Accordingly, the receiving cavity 510 has an inclined boundary 518 adapted to the cutout 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 cutout 290 of the aerosol-generating article 200.

[0395] 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 for stopping.

[0396] 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.

[0397] 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.

[0398] 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.

[0399] 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.

[0400] 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:

[0401] 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;

[0402] 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;

[0403] 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.

[0404] According to Figure 2 and Figure 3 As shown, the aerosol generating article 200 includes:

[0405] An outer body 230 that defines a closed volume, is rigid, and is jointly defined by a cover plate 231 and a tray 232; specifically, the cover plate 231 and the tray 232 are joined in the thickness direction of the aerosol generating article 200 to form or define the outer 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.

[0406] 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.

[0407] In some embodiments, the cover plate 231 and the tray 232 are tightly coupled by interference fit or press fit. In some embodiments, a separating 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 separating rib 235 separates the first air passage R21 and the second air passage R22. 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 separating 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 separating rib 235.

[0408] In Figure 3 In the illustrated embodiment, the separating rib 235 is arranged on the surface of the tray 232 facing the cover plate 231; or in some alternative embodiments, the separating rib 235 is arranged on the surface of the cover plate 231 facing the tray 232.

[0409] 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, thereby heating the aerosol - generating substrates combined thereon to generate aerosols. The aerosol - generating substrates are in the form of sheets or blocks of solids or gels.

[0410] In some embodiments, the substrate is sheet - shaped. The substrate has a thickness of approximately 0.03 - 1.0 mm. In a more preferred embodiment, the substrate has a thickness of approximately 0.03 - 0.2 mm. In some specific embodiments, the thickness of the substrate is 0.26 mm.

[0411] 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.

[0412] In some embodiments, the aerosol - generating substrate can be meant to refer to a substrate capable of releasing volatile compounds that can form aerosols. The volatile compounds can be released by heating the aerosol - generating substrate to generate aerosols. In some common embodiments, the aerosol - generating substrate is or can include a solid or gel at room temperature.

[0413] In some embodiments, the aerosol - generating substrate can include one or more of powders, granules, fragments, strips, bands or flakes of vanilla leaves, tobacco leaves, 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.

[0414] 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 a 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 a 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 slurries, cast - leaf tobacco, and expanded tobacco.

[0415] In some alternative embodiments, the aerosol - generating substrate further includes: a flavor; the flavor may contain volatile flavor components. For example, in general embodiments, the flavor may provide flavors selected from menthol, lemon, vanilla, orange, wintergreen, cherry, and cinnamon; the flavor may include volatile tobacco flavor compounds released from the aerosol - generating substrate upon heating.

[0416] 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.

[0417] 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.

[0418] 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.

[0419] In a 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.

[0420] Alternatively, in yet another specific embodiment, the aerosol - generating substrate comprises: 65 - 90 wt% of an active base material, 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.

[0421] In some embodiments, the areal density of the aerosol - generating substrate is 20 - 150 g / m 2 .

[0422] 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.

[0423] In some embodiments, the water content in the aerosol - generating substrate is 6 - 14 wt%.

[0424] 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 base material, 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 the aerosol, and the second sub - layer is used to adjust or change properties such as the taste or fragrance of the aerosol.

[0425] 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 base material, 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.

[0426] 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 adopt metal oxide or metal ion inorganic antibacterial agents, etc.

[0427] 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.

[0428] Alternatively, in some alternative embodiments, the aerosol - forming substrate may comprise a gel and / or a paste. A gel may be defined as a substantially dilute cross - linked system that does not exhibit flow at steady state. A paste may be defined as a viscous fluid such as a paste or slurry; for example, a paste may be a fluid that has a dynamic viscosity greater than 1 Pa·S or 5 Pa·S or 10 Pa·S when at rest.

[0429] In one embodiment, an identifiable identifier is arranged on the aerosol - forming substrate and / or the substrate. The identifier may be arranged as an identifiable pattern; or in some alternative embodiments, the identifier is an identifiable color, texture, number, text, two - dimensional code, etc. In some embodiments, the identifier 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 obtains the unique properties of the aerosol - generating article 200 by identifying the identifier.

[0430] 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 identifier, so that it can be determined 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.

[0431] 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.

[0432] 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.

[0433] 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 heating the aerosol-forming substrate 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 permalloy substrate, the mass percentage of iron ranges from 15wt% to 85wt%, and the mass percentage of nickel does not exceed 85wt%.

[0434] Specifically, the plurality of substrates includes: at least one or more sheet-like first substrates 241, and at least one or more first aerosol-forming substrates 242 formed or bonded to the at least one or more sheet-like first substrates 241. The first substrate 241 and the first aerosol-forming substrate 242 are received and held in the first cavity 271.

[0435] Specifically, the plurality of substrates further includes: at least one or more sheet-like second substrates 281, and at least one or more second aerosol-forming substrates 282 formed or bonded to the at least one or more sheet-like second substrates 281.

[0436] In a specific embodiment, each of the plurality of first aerosol-forming substrates 242 is respectively bonded to each of the plurality of first substrates 241. Each of the plurality of second aerosol-forming substrates 282 is respectively bonded to each of the plurality of second substrates 281. And each of the plurality of first aerosol-forming substrates 242 and / or the first substrate 241 is respectively and discretely arranged in the plurality of first cavities 271; the plurality of second aerosol-forming substrates 282 and / or the second substrate 281 are respectively and discretely arranged in the plurality of second cavities 272.

[0437] The first aerosol-forming substrate 242 is exposed to or located in the first air passage R21, so that the aerosol generated by the first aerosol-forming substrate 242 can be output from the first air passage R21 to the first air outlet 261; the second aerosol-forming substrate 282 is exposed to or located in the second air passage R22, so that the aerosol generated by the second aerosol-forming substrate 282 can be output from the second air passage R22 to the second air outlet 262.

[0438] In some embodiments, the first substrate 241 and / or the second substrate 281 may be a dense sheet; or in still other embodiments, the first substrate 241 and / or the second substrate 281 may be a mesh with pores, such that the first substrate 241 and / or the second substrate 281 is fluid-permeable.

[0439] 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 requirement is not less than 250 °C. Or in still other alternative embodiments, the cover plate 231 and / or the tray 232 comprise or are paper; for example, the cover plate 231 and / or the tray 232 comprise fiber paper prepared from wood fibers, hemp fibers or linen fibers, bamboo fibers, etc.

[0440] 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 transfer of heat from 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, and particularly prevents 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.

[0441] 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.

[0442] According to Figures 4 to 10 As shown, the heating device 100 further includes:

[0443] The battery cell 10, arranged longitudinally between the receiving cavity 510 and the distal end 120, for supplying power to the heating device 100 and / or the heater 30;

[0444] The 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.

[0445] 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.

[0446] 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.

[0447] 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.

[0448] According to Figures 4 to 10 As shown, the heating device 100 further includes:

[0449] 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.

[0450] 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.

[0451] Or in more variant embodiments, the heating device 100 further includes at least one or more heaters 30, and the heater 30 includes at least one of a resistance 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 heat to heat the aerosol-forming substrate of the aerosol-generating article 200; alternatively, the heater 30 heats the aerosol-forming substrate of the aerosol-generating article 200 by radiating infrared light.

[0452] 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-forming 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.

[0453] 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.

[0454] 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.

[0455] 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 enable the plurality of planar spiral coils 30 to 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-forming substrate on the substrate, such as the first aerosol-forming substrate 242 or the second aerosol-forming substrate 282, is heated to generate aerosol.

[0456] 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 substrate of the aerosol-generating article 200, such as the first substrate 241 or the second substrate 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.

[0457] 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 substrate, such as the first substrate 241 and the first aerosol-generating matrix 242, to generate an aerosol for one puff; during the user's next puff, 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 substrate, such as the first substrate 241 and the first aerosol-generating matrix 242, to generate an aerosol for one puff; and so on. After 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 one by one in sequence instead of simultaneously means minimizing the unnecessary consumption of the aerosol-generating matrix and reducing energy waste. Alternatively, in some other embodiments, the order in which the multiple planar spiral coils 30 are started in sequence is along the direction of the array arrangement.

[0458] Alternatively, in some alternative embodiments, the main circuit board 20 controls multiple planar spiral coils 30 to be individually activated sequentially, without intervals along the arrangement direction of the planar spiral coils 30. Alternatively, in some alternative embodiments, the main circuit board 20 controls several planar spiral coils 30 to be individually activated sequentially, either at intervals or in a jumping manner.

[0459] In some embodiments, several or multiple planar spiral coils 30 can be energized sequentially, i.e., each time the user takes a puff, it is energized once, so as to consistently generate an aerosol based on each puff.

[0460] In Figures 4 to 10 the embodiments of

[0461] 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 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.

[0462] 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, it prompts the user that the aerosol generating article 200 has been consumed, and prompts the user to replace a new aerosol generating article 200.

[0463] 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 detected by a sensor; for example, a light sensor or a pressure sensor is provided in the aerosol generating device, etc., for sensing the aerosol generating article 200 being combined in or removed from the receiving cavity, and determining the replacement or consumption of the aerosol generating article 200 by the user according to the combination and removal.

[0464] In some embodiments, the main circuit board 20 controls the sequential activation of the above planar spiral coil 30 in a cyclic manner. For example, in some embodiments, the cycle is repeated 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 puffs reaches the predetermined number, a new cycle is entered to control the sequential activation of the planar spiral coil 30. For another example, in some embodiments, the cycle is repeated according to the removal or replacement of the aerosol generating article 200.

[0465] In some embodiments, the main circuit board 20 controls a plurality of planar spiral coils 30 to generate a magnetic field to induce the heating of the opposing substrates, such as the first substrate 241 or the second substrate 281, 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 the heating of the opposing substrates, such as the first substrate 241 or the second substrate 281, to 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 the heating of the opposing substrates, such as the first substrate 241 or the second substrate 281, 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 the heating temperature of the opposing substrates, such as the first substrate 241 or the second substrate 281, to increase or decrease sequentially along the heating start order.

[0466] For example, in some embodiments, the main circuit board 20 is configured to supply power to the planar spiral coil 30 sequentially according to a given power sequence, such that the opposing substrates, such as the first substrate 241 or the second substrate 281, reach the operating temperature within a predetermined time. For example, each time the main circuit board 20 supplies power to the planar spiral coil 30, the opposing substrates, such as the first substrate 241 or the second substrate 281, reach a temperature of at least about 200 degrees, or at least 300 degrees, or at least 400 degrees within 0.5 s and stop after maintaining for about 2.5 s.

[0467] 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. 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, triangular, or other cross-sectional shapes. In some embodiments, the wire material for winding the planar spiral coil 30 is a Litz wire having multiple or multi-strand conductive filaments.

[0468] Alternatively, in some further 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 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.

[0469] According to Figures 4 to 10 as shown, the heating device 100 further includes:

[0470] 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 part of the first bracket 50 is disposed between the planar spiral coil 30 and the front side 150. At least a part of the first bracket 50 is concave in shape to surround and define the receiving cavity 510.

[0471] The first bracket 50 has a substantially flat shape; and the first bracket 50 has opposite front end 520 and end 530; wherein, the front end 520 is mounted towards the proximal end 110, and the 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.

[0472] In some embodiments, the first bracket 50 is made of a non-sensitive rigid material; for example, the first bracket 50 is made of a material such as polymer plastic or ceramic.

[0473] 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 or the like 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 in 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.

[0474] 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.

[0475] The air outlet passage 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 suction port 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.

[0476] 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 air to enter the receiving cavity 510 during suction.

[0477] According to Figures 4 to 10 As shown, a first air inlet 131 is arranged on the first side 130 of the housing for 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 through a fastener such as a screw passing through the connecting portion 525.

[0478] The extension portion 52 of the first bracket 50 is further arranged with:

[0479] A first air inlet passage R11, extending from the first air inlet 131 to the first air inlet communication port 515;

[0480] A second air inlet passage R12, extending from the second air inlet 141 to the second air inlet communication port 516.

[0481] 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.

[0482] 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 of 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 of the first end 210 of the aerosol-generating article 200 is aligned and in fluid communication with the second air outlet communication port 514.

[0483] 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 inside 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 inside 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.

[0484] 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.

[0485] 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 towards the first side 130 in the width direction and a second joint 522 extending towards the second side 140 in the width direction 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.

[0486] According to Figures 4 to 10 As shown, the heating device 100 further includes:

[0487] 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 surrounds 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 surrounds 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.

[0488] Similarly, the heating device 100 further includes:

[0489] 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 surrounds 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 surrounds 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.

[0490] The first elastic element 53 / the first elastic element 54, the second elastic element 55 / the second elastic element 56 are prepared from elastic materials such as flexible silica gel or thermoplastic elastomer, so that they have elasticity.

[0491] 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.

[0492] In some embodiments, the extension portion 52 is open at the end 530 and defines an opening. Accordingly, the following are also arranged in the heating device 100:

[0493] 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 by a mechanical connection mechanism such as snap-fastening, screwing, etc.

[0494] According to Figure 6 、 Figure 7 、 Figure 8 and Figure 10 As shown, a receiving wall 529 extending toward the rear side 160 is arranged on the extension portion 52 of the first bracket 50; the receiving wall 529 is 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 soldered to the first portion 21 of the main circuit board 20 through conductive pins to form an electrical connection. Also, 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.

[0495] And generally, the airflow sensor 80 includes:

[0496] 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.

[0497] 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.

[0498] 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 / accommodated and held within the accommodation wall 529 is in communication 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 when the user sucks. The first sensing surface of the air flow sensor 80 is in communication 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 when the user sucks.

[0499] 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.

[0500] 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.

[0501] 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.

[0502] According to Figures 4 to 10 As shown, the first intake passage R11 and the second intake passage R12 are substantially completely symmetric. Specifically, according to Figure 10 As shown, 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.

[0503] Specifically Figures 4 to 10 As shown, the extension portion 52 is further provided with a first air flow guiding wall 523 and a second air flow guiding wall 524 arranged along the longitudinal direction. 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. Therefore, 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. Therefore, there is still a gap between the second air flow guiding wall 524 and the end 530.

[0504] During 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.

[0505] 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.

[0506] According to Figures 4 to 10 As shown, the heating device 100 further includes:

[0507] 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 between them.

[0508] According to Figures 4 to 10As shown, the second bracket 40 is provided with an annular flange 41 and an annular flange 42 on the surface facing the front side 150 and / or the first bracket 50. At least one or more accommodation 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 accommodation cavities 43, and are then respectively surrounded by the annular flange 41. A plurality of notches are further arranged on the annular flange 41 for allowing the 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 the main circuit board 20.

[0509] It should be noted that the description and drawings of the present application provide 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; The heating device comprises: A first bracket at least partially defining a receiving cavity for receiving the aerosol-generating article; An airflow sensor configured to detect a change in the airflow flowing through the aerosol-generating system during user suction; the airflow sensor is accommodated or held in the first bracket and is spaced from the receiving cavity along the longitudinal direction of the heating device.

2. The aerosol generating system according to claim 1, wherein The heating device further comprises: 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 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 puff.

3. The aerosol generating system according to claim 2, wherein The heating device further comprises a proximal end and a distal end facing away from each other in the longitudinal direction, and: A battery cell located between the receiving cavity and the distal end for powering the at least one heater; A main circuit board including a first portion and a second portion arranged in the longitudinal direction; wherein, the controller is arranged in the first portion, and the airflow sensor is electrically connected to the first portion; the battery cell is electrically connected to the second portion.

4. The aerosol generating system according to any one of claims 1 to 3, characterized in that, Further comprising: An inhalation port; A first airflow channel defining a first airflow path for delivering the aerosol to the inhalation port; A second airflow channel defining a second airflow path for delivering the aerosol to the inhalation port; The airflow sensor is in simultaneous airflow communication with the first airflow channel and the second airflow channel, and thus can sense a change in the airflow flowing through the first airflow channel and / or the second airflow channel.

5. The aerosol generating system according to claim 4, wherein A partition wall is further arranged in the first bracket for separating the first airflow channel and the second airflow channel; a first sensing hole and a second sensing hole are respectively arranged on both sides of the partition wall; The airflow sensor is in airflow communication with the first airflow channel through the first sensing hole and is in airflow communication with the second airflow channel through the second sensing hole.

6. The aerosol generating system according to claim 5, wherein, A first shielding wall is further arranged in the first bracket for shielding the aerosol condensate in the first intake channel from flowing towards the first sensing hole; And / or, a second shielding wall is further arranged in the first bracket for shielding the aerosol condensate in the second intake channel from flowing towards the second sensing hole.

7. The aerosol generating system according to claim 4, characterized in that, The heating device further comprises: a first intake port and a second intake port arranged at intervals; The first airflow channel comprises a first intake channel extending from the first intake port to the receiving cavity; the second airflow channel comprises a second intake channel extending from the second intake port to the receiving cavity; the airflow sensor is in simultaneous airflow communication with the first intake channel and the second intake channel.

8. The aerosol generating system according to claim 7, wherein, The first air inlet passage and the second air inlet passage are formed or defined in the first bracket and isolated from each other in the first bracket.

9. The aerosol generating system according to claim 7, characterized in that, The first air intake passage and the second air intake passage are substantially mirror-symmetrical.

10. The aerosol generating system according to claim 7, wherein, The first air inlet passage and the second air inlet passage are arranged to extend in a circuitous manner in the first bracket.

11. The aerosol generating system according to claim 1 or 2, characterized in that, The heating device further comprises a proximal end and a distal end facing each other in the longitudinal direction, and: A battery cell, located between the receiving cavity and the distal end, for supplying power; The first bracket includes an extension portion located between the receiving cavity and the battery core; the airflow sensor is accommodated or held in the extension portion of the first bracket.

12. 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.

13. The aerosol generating system according to claim 12, 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.

14. The aerosol generating system according to claim 1 or 2, characterized in that, 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.

15. The aerosol generating system according to claim 14, 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.

16. The aerosol generating system according to claim 14, 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.

17. The aerosol generating system according to any one of claims 1 to 3, characterized in that, The heating device also includes: A front side and a rear side opposite to each other in a thickness direction; a receiving chamber for removably receiving the aerosol-generating article; At least one heater is disposed between the receiving cavity and the back 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.

18. The aerosol generating system according to claim 17, wherein The at least one heater is configured to be substantially planar; And / or, the at least one heater comprises or is a planar spiral coil.

19. The aerosol generating system according to claim 17, characterized in that, The at least one heater is arranged substantially parallel to the receiving cavity.

20. The aerosol generating system according to claim 17, wherein, The heating device also includes: 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.

21. An aerosol generating system, characterized in that, include: 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; An inhalation port; A first air flow channel defining a first air flow path for delivering aerosol to the inhalation port; A second air flow channel defining a second air flow path for delivering aerosol to the inhalation port; An air flow sensor arranged to be in air flow communication with both the first air flow channel and the second air flow channel simultaneously, and thus capable of sensing changes in the air flow passing through the first air flow channel and / or the second air flow channel.

22. A heating device configured to heat an aerosol-generating article to generate an aerosol; the aerosol-generating article comprising at least one aerosol-generating substrate configured to generate an aerosol when heated; characterized in that, The heating device includes a front side and a rear side facing away from each other in the thickness direction, and: A first bracket at least partially defining a receiving cavity for 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 substrate of the aerosol-generating article; An air flow sensor configured to detect changes in the air flow passing through the aerosol-generating system during user inhalation; the air flow sensor is accommodated or held by the first bracket and is spaced from the receiving cavity along the longitudinal direction of the heating device.

23. A heating device configured to heat an aerosol-generating article to generate an aerosol; The aerosol-generating article includes at least one aerosol-generating substrate configured to generate aerosol when heated; wherein, The heating device includes: A receiving cavity for 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 substrate of the aerosol-generating article; A first air inlet and a second air inlet; A first air inlet channel arranged to extend from the first air inlet to the receiving cavity for providing a first air inlet path for air to enter the receiving cavity during user inhalation; A second air inlet channel arranged to extend from the second air inlet to the receiving cavity for providing a second air inlet path for air to enter the receiving cavity during user inhalation; An air flow sensor arranged to be in air flow communication with both the first air inlet channel and the second air inlet channel simultaneously, and thus capable of sensing changes in the air flow passing through the first air inlet channel and / or the second air inlet channel.

Images