Cartridge for use in aerosol-generating device

Abstract

A cartridge (10) for use in an aerosol-generating device (600), the cartridge (10) comprising: a housing (100) having an inlet (110) and an outlet (120) and a chamber (400) extending between the inlet (110) and the outlet (120); a heating element (200) for heating the aerosol-forming substrate to form an aerosol, the heating element (200) extending into the chamber (400); the chamber (400) comprises a first portion (410) on a first side of the heating element (200) and a second portion (420) on a second side of the heating element (200); and an aerosol-generating substrate (300) disposed within at least one of the first portion (410) and the second portion (420). The cross-sectional area of the heating element (200) in the plane in which the heating element (200) extends is between 60 square millimeters and 90 square millimeters. The cross-sectional area of the chamber (400) in the plane in which the heating element (200) extends is between 150 and 250 square millimeters. The ratio of the cross-sectional area of the heating element (200) in the plane in which the heating element (200) extends to the cross-sectional area of the chamber (400) in the plane in which the heating element (200) extends is at least 0.3.

Description

[0001] This invention relates to a cylinder for use in an aerosol generating apparatus. The cylinder includes an aerosol generating matrix adapted to generate inhalable aerosols upon heating.

[0002] Aerosol-generating articles, such as those in which an aerosol-generating matrix containing a tobacco matrix is ​​heated rather than burned, are known in the art. Typically, in such heated smoking articles, an aerosol is generated by transferring heat from a heat source to a physically separated aerosol-generating matrix or material, which may be positioned in contact with, within, around, or downstream of the heat source. During use of the aerosol-generating article, volatile compounds are released from the aerosol-generating matrix through heat transfer from the heat source and are entrained in the air drawn through the aerosol-generating article. When the released compounds cool, they condense to form an aerosol.

[0003] Numerous prior art documents disclose aerosol generating apparatuses for consuming aerosol generating articles. Such apparatuses include, for example, electrically heated aerosol generating apparatuses, in which aerosols are generated by transferring heat from one or more electrically heated elements of the aerosol generating apparatus to an aerosol generating matrix of the heated aerosol generating article. For example, electrically heated aerosol generating apparatuses have been proposed that include internal heater blades adapted to be inserted into the aerosol generating matrix.

[0004] It is also known to use aerosol generating articles in combination with external heating systems. For example, WO 2020 / 115151 describes the provision of one or more heating elements arranged around the periphery of the aerosol generating article when it is received in the cavity of an aerosol generating apparatus. As an alternative, WO 2015 / 176898 proposes an inductively heated aerosol generating article comprising an aerosol generating matrix and a sensor arranged within the aerosol generating matrix.

[0005] Aerosol-generating products where the aerosol-generating matrix is ​​heated rather than burned present many challenges not encountered with conventional smoking products. For example, with some aerosol-generating matrices, it may be difficult to deliver enough aerosol to the user.

[0006] The aim is to provide a new and improved aerosol-generating product.

[0007] A cylinder for an aerosol generation apparatus is provided. The cylinder may include a housing. The housing may have an inlet and an outlet. The housing may have a chamber. The chamber may extend between the inlet and the outlet. The cylinder may include a heating element for heating an aerosol-forming matrix to form an aerosol. The heating element may extend into the chamber. The chamber may include a first portion on a first side of the heating element and a second portion on a second side of the heating element. The cylinder may include an aerosol-forming matrix disposed within at least one of the first and second portions. The cross-sectional area of ​​the heating element in the plane in which the heating element extends may be between 60 mm² and 90 mm². The cross-sectional area of ​​the chamber in the plane in which the heating element extends may be between 150 mm² and 250 mm². The ratio of the cross-sectional area of ​​the heating element in the plane in which the heating element extends to the cross-sectional area of ​​the chamber in the plane in which the heating element extends may be at least 0.3.

[0008] A cylinder for an aerosol generating apparatus is also provided, the cylinder comprising: a housing having an inlet and an outlet and a chamber extending between the inlet and the outlet; a heating element for heating an aerosol forming matrix to form an aerosol, the heating element extending into the chamber; the chamber comprising a first portion on a first side of the heating element and a second portion on a second side of the heating element; and an aerosol generating matrix disposed within at least one of the first and second portions, wherein the cross-sectional area of ​​the heating element in the plane in which the heating element extends is between 60 mm² and 90 mm², wherein the cross-sectional area of ​​the chamber in the plane in which the heating element extends is between 150 mm² and 250 mm², and wherein the ratio of the cross-sectional area of ​​the heating element in the plane in which the heating element extends to the cross-sectional area of ​​the chamber in the plane in which the heating element extends is at least 0.3.

[0009] The inventors have discovered that an advantageous way to effectively heat an aerosol generating matrix is ​​to divide the aerosol generating matrix into two parts, with one part of the aerosol generating matrix on each side of the heating element.

[0010] A cylinder for an aerosol generating apparatus is also provided, the cylinder comprising: a housing having an inlet and an outlet and a chamber extending between the inlet and the outlet; a heating element for heating an aerosol generating matrix to form an aerosol, the heating element extending at least partially around the chamber; and an aerosol generating matrix disposed within the chamber, wherein the cross-sectional area of ​​the heating element in the plane in which the heating element extends is between 60 mm² and 90 mm², wherein the cross-sectional area of ​​the chamber in the plane in which the heating element extends is between 150 mm² and 250 mm², and wherein the ratio of the cross-sectional area of ​​the heating element in the plane in which the heating element extends to the cross-sectional area of ​​the chamber in the plane in which the heating element extends is at least 0.3.

[0011] A cylinder for an aerosol generation apparatus is also provided. The cylinder may include a housing. The housing may include an inlet and an outlet. The cylinder may include a chamber. The chamber may extend between the inlet and the outlet. The cylinder may include a heating element for heating an aerosol-forming matrix to form an aerosol. The heating element may extend at least partially around the chamber. The cylinder may include an aerosol-forming matrix disposed within the chamber. The cross-sectional area of ​​the heating element in the plane where the heating element extends may be between 60 mm² and 90 mm². The cross-sectional area of ​​the chamber in the plane where the heating element extends may be between 150 mm² and 250 mm². The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends may be at least 0.3.

[0012] Advantageously, providing the heating element with a larger cross-sectional area relative to the chamber can provide optimal heating of the aerosol-generating matrix. A ratio of at least 0.3 between the cross-sectional area of ​​the heating element in the plane where the heating element extends and the cross-sectional area of ​​the chamber in the plane where the heating element extends allows for optimal and efficient heating using a resistance heating element.

[0013] As used herein, the term "aerosol generating apparatus" refers to an apparatus that interacts with a liquid aerosol forming matrix to generate aerosols.

[0014] As used herein, the term "tube" refers to a component that interacts with an aerosol-forming apparatus to generate aerosols.

[0015] As used herein, the term "aerosol-generating matrix" refers to a matrix capable of releasing volatile compounds that can form aerosols. Such volatile compounds can be released by heating the aerosol-generating matrix.

[0016] As used in this article, the term "heating element" refers to a component that transfers heat energy to the liquid aerosol forming matrix.

[0017] The chamber may include a first portion on a first side of the heating element and a second portion on a second side of the heating element.

[0018] The first and second portions of the chamber may have a combined internal volume of at least 100 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 150 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 200 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 250 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 300 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 350 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 400 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 450 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 500 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 520 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 540 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 560 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 580 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 600 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 650 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 700 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 700 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 750 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of at least 800 cubic millimeters.

[0019] The first and second portions of the chamber may have a combined internal volume of less than or equal to 2000 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1900 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1800 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1700 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1600 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1500 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1400 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1300 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1200 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1150 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1100 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1050 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 1000 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 950 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 900 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 850 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 800 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 750 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 740 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 720 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 700 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 680 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 660 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 640 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 620 cubic millimeters. The first and second portions of the chamber may have a combined internal volume of less than or equal to 600 cubic millimeters.

[0020] The first and second portions of the chamber may have a combined internal volume between 100 and 2000 cubic millimeters. The first and second portions of the chamber may have a combined internal volume between 200 and 1800 cubic millimeters. The first and second portions of the chamber may have a combined internal volume between 300 and 1600 cubic millimeters. The first and second portions of the chamber may have a combined internal volume between 350 and 1400 cubic millimeters. The first and second portions of the chamber may have a combined internal volume between 400 and 1200 cubic millimeters. The first and second portions of the chamber may have a combined internal volume between 450 and 1000 cubic millimeters. The first and second portions of the chamber may have a combined internal volume between 500 and 800 cubic millimeters. The first and second portions of the chamber may have a combined internal volume between 560 and 700 cubic millimeters. The first and second portions of the chamber may have a combined internal volume between 580 and 680 cubic millimeters. The first and second portions of the chamber may have a combined internal volume between 600 and 660 cubic millimeters. The first and second portions of the chamber may have a combined internal volume between 620 and 640 cubic millimeters.

[0021] The first and second parts may have a length of at least 8 mm. The first and second parts may have a length of at least 8.5 mm. The first and second parts may have a length of at least 9 mm. The first and second parts may have a length of at least 9.5 mm.

[0022] The first and second parts may have a length of less than or equal to 11 mm. The first and second parts may have a length of less than or equal to 10.5 mm. The first and second parts may have a length of less than or equal to 10 mm.

[0023] The first and second parts may have a length between 8 mm and 11 mm. The first and second parts may have a length between 8.5 mm and 10.5 mm. The first and second parts may have a length between 9 mm and 10 mm.

[0024] The first and second parts may have a width of at least 10 mm. The first and second parts may have a width of at least 10.5 mm. The first and second parts may have a width of at least 11 mm.

[0025] The first and second parts may have a width of less than or equal to 13 mm. The first and second parts may have a width of less than or equal to 12.5 mm. The first and second parts may have a width of less than or equal to 12 mm. The first and second parts may have a width of less than or equal to 11.5 mm.

[0026] The first and second parts may have a width between 10 mm and 13 mm. The first and second parts may have a width between 10.5 mm and 12.5 mm. The first and second parts may have a width between 11 mm and 12 mm.

[0027] The first and second parts may have a depth of at least 5 mm. The first and second parts may have a depth of at least 5.5 mm. The first and second parts may have a depth of at least 5.7 mm.

[0028] The first and second parts may have a depth of 7 mm or less. The first and second parts may have a depth of 6.5 mm or less. The first and second parts may have a depth of 6 mm or less. The first and second parts may have a depth of 5.7 mm or less.

[0029] The first and second parts may have a depth between 5 mm and 6 mm.

[0030] The first and second portions of the chamber may be configured to contain an aerosol generating matrix having a combined volume of at least 510 cubic millimeters. The first and second portions of the chamber may be configured to contain an aerosol generating matrix having a combined volume of at least 530 cubic millimeters. The first and second portions of the chamber may be configured to contain an aerosol generating matrix having a combined volume of at least 550 cubic millimeters. The first and second portions of the chamber may be configured to contain an aerosol generating matrix having a combined volume of at least 570 cubic millimeters. The first and second portions of the chamber may be configured to contain an aerosol generating matrix having a combined volume of at least 590 cubic millimeters.

[0031] The first and second portions of the chamber can be configured to contain an aerosol generating matrix having a combined volume of less than or equal to 690 cubic millimeters. The first and second portions of the chamber can be configured to contain an aerosol generating matrix having a combined volume of less than or equal to 670 cubic millimeters. The first and second portions of the chamber can be configured to contain an aerosol generating matrix having a combined volume of less than or equal to 650 cubic millimeters. The first and second portions of the chamber can be configured to contain an aerosol generating matrix having a combined volume of less than or equal to 630 cubic millimeters. The first and second portions of the chamber can be configured to contain an aerosol generating matrix having a combined volume of less than or equal to 610 cubic millimeters.

[0032] The first and second portions of the chamber can be configured to contain an aerosol generating matrix having a combined volume between 530 and 670 cubic millimeters. The first and second portions of the chamber can also be configured to contain an aerosol generating matrix having a combined volume between 550 and 650 cubic millimeters. The first and second portions of the chamber can further be configured to contain an aerosol generating matrix having a combined volume between 570 and 630 cubic millimeters. Finally, the first and second portions of the chamber can be configured to contain an aerosol generating matrix having a combined volume between 590 and 610 cubic millimeters.

[0033] The first part of the chamber may have a volume of at least 250 cubic millimeters. The first part of the chamber may have a volume of at least 270 cubic millimeters. The first part of the chamber may have a volume of at least 290 cubic millimeters.

[0034] The first part of the chamber may have a volume of less than or equal to 330 cubic millimeters. The first part of the chamber may have a volume of less than or equal to 310 cubic millimeters. The first part of the chamber may have a volume of less than or equal to 290 cubic millimeters.

[0035] The first part of the chamber may have a volume between 250 cubic millimeters and 330 cubic millimeters. The first part of the chamber may have a volume between 270 cubic millimeters and 310 cubic millimeters.

[0036] The first part may have a length of at least 8 mm. The first part may have a length of at least 8.5 mm. The first part may have a length of at least 9 mm. The first part may have a length of at least 9.5 mm.

[0037] The first part may have a length of less than or equal to 11 mm. The first part may have a length of less than or equal to 10.5 mm. The first part may have a length of less than or equal to 10 mm.

[0038] The first part may have a length between 8 mm and 11 mm. The first part may have a length between 8.5 mm and 10.5 mm. The first part may have a length between 9 mm and 10 mm.

[0039] The first part may have a width of at least 10 mm. The first part may have a width of at least 10.5 mm. The first part may have a width of at least 11 mm.

[0040] The first part may have a width of 13 mm or less. The first part may have a width of 12.5 mm or less. The first part may have a width of 12 mm or less. The first part may have a width of 11.5 mm or less.

[0041] The first part may have a width between 10 mm and 13 mm. The first part may have a width between 10.5 mm and 12.5 mm. The first part may have a width between 11 mm and 12 mm.

[0042] The second part of the chamber may have a volume of at least 250 cubic millimeters. The second part of the chamber may have a volume of at least 270 cubic millimeters. The second part of the chamber may have a volume of at least 290 cubic millimeters.

[0043] The second part of the chamber may have a volume of 330 cubic millimeters or less. The second part of the chamber may have a volume of 310 cubic millimeters or less. The second part of the chamber may have a volume of 290 cubic millimeters or less.

[0044] The second part of the chamber may have a volume between 250 cubic millimeters and 330 cubic millimeters. The second part of the chamber may have a volume between 270 cubic millimeters and 310 cubic millimeters.

[0045] The second part may have a length of at least 8 mm. The second part may have a length of at least 8.5 mm. The second part may have a length of at least 9 mm. The second part may have a length of at least 9.5 mm.

[0046] The second part may have a length of less than or equal to 11 mm. The second part may have a length of less than or equal to 10.5 mm. The second part may have a length of less than or equal to 10 mm.

[0047] The second part may have a length between 8 mm and 11 mm. The second part may have a length between 8.5 mm and 10.5 mm. The second part may have a length between 9 mm and 10 mm.

[0048] The second part may have a width of at least 10 mm. The second part may have a width of at least 10.5 mm. The second part may have a width of at least 11 mm.

[0049] The second part may have a width of 13 mm or less. The second part may have a width of 12.5 mm or less. The second part may have a width of 12 mm or less. The second part may have a width of 11.5 mm or less.

[0050] The second part may have a width between 10 mm and 13 mm. The second part may have a width between 10.5 mm and 12.5 mm. The second part may have a width between 11 mm and 12 mm.

[0051] The housing may have an external volume of at least 1300 cubic millimeters. The housing may have an external volume of at least 1320 cubic millimeters. The housing may have an external volume of at least 1340 cubic millimeters. The housing may have an external volume of at least 1360 cubic millimeters. The housing may have an external volume of at least 1380 cubic millimeters. The housing may have an external volume of at least 1400 cubic millimeters.

[0052] The casing may have an external volume of 1500 cubic millimeters or less. The casing may have an external volume of 1480 cubic millimeters or less. The casing may have an external volume of 1460 cubic millimeters or less. The casing may have an external volume of 1440 cubic millimeters or less. The casing may have an external volume of 1420 cubic millimeters or less. The casing may have an external volume of 1400 cubic millimeters or less.

[0053] The housing may have an external volume between 1300 and 1500 cubic millimeters. The housing may have an external volume between 1320 and 1480 cubic millimeters. The housing may have an external volume between 1340 and 1460 cubic millimeters. The housing may have an external volume between 1360 and 1440 cubic millimeters. The housing may have an external volume between 1380 and 1420 cubic millimeters.

[0054] The shell can extend between the inlet and the outlet.

[0055] The shell can define a chamber. The shell can define a chamber between the inlet and the outlet. The shell can define a chamber between the upstream and downstream portions.

[0056] The housing may have an external length of at least 16 mm. The housing may have an external length of at least 16.5 mm. The housing may have an external length of at least 17 mm. The housing may have an external length of at least 17.5 mm. The housing may have an external length of at least 17 mm. The housing may have an external length of at least 17 mm.

[0057] The housing may have an external length of 20 mm or less. The housing may have an external length of 19.5 mm or less. The housing may have an external length of 19 mm or less. The housing may have an external length of 18.5 mm or less. The housing may have an external length of 18 mm or less. The housing may have an external length of 17.5 mm or less. The housing may have an external length of 17 mm or less.

[0058] The housing may have an external length between 16 mm and 20 mm.

[0059] The housing may have an external width of at least 11.5 mm. The housing may have an external width of at least 12 mm.

[0060] The housing may have an external width of 13 mm or less. The housing may have an external width of 12.5 mm or less. The housing may have an external width of 12 mm or less.

[0061] The housing may have an external width between 11.5 mm and 13 mm.

[0062] The housing may have an external depth of at least 5 mm. The housing may have an external depth of at least 5.5 mm. The housing may have an external depth of at least 6 mm.

[0063] The housing may have an external depth of 6.5 mm or less. The housing may have an external depth of 6 mm or less. The housing may have an external depth of 5.5 mm or less.

[0064] The housing may have an external depth between 5 mm and 6.5 mm.

[0065] The chamber can be configured to store the aerosol generation matrix.

[0066] The first part of the chamber may have an internal volume that is substantially the same as that of the second part.

[0067] The first part of the chamber may have a shape that is substantially the same as that of the second part of the chamber.

[0068] The first part of the chamber may have substantially the same size as the second part of the chamber. The first part of the chamber may have substantially the same length as the second part of the chamber. The first part of the chamber may have substantially the same width as the second part of the chamber. The first part of the chamber may have substantially the same depth as the second part of the chamber.

[0069] The first part of the chamber and the second part of the chamber can be located on opposite sides of the heating element.

[0070] The shell can be a rigid shell. The shell can be formed of a rigid material.

[0071] The housing may include an upstream portion. The housing may include a downstream portion. The housing may include a main body.

[0072] The upstream portion can be removably attached to the main body. The downstream portion can be removably attached to the main body. The upstream portion can be fixed to the main body. The downstream portion can be fixed to the main body.

[0073] The chamber may extend between the upstream and downstream portions. The chamber may be defined by the upstream portion, the downstream portion, and the main body.

[0074] The upstream portion can be located at the upstream end of the cylinder.

[0075] The upstream portion may include an inlet. The upstream portion may include an upstream end cap.

[0076] The upstream portion may have a length of at least 3 mm. The upstream portion may have a length of at least 3.5 mm. The upstream portion may have a length of at least 4 mm.

[0077] The upstream portion may have a length of 4.5 mm or less. The upstream portion may have a length of 4 mm or less. The upstream portion may have a length of 3.5 mm or less.

[0078] The upstream portion may have a length between 3 mm and 4.5 mm.

[0079] The upstream portion can extend into the main body.

[0080] The upstream portion may have an external volume of at least 140 cubic millimeters. The upstream portion may have an external volume of at least 145 cubic millimeters. The upstream portion may have an external volume of at least 150 cubic millimeters.

[0081] The upstream portion may have an external volume of less than or equal to 160 cubic millimeters. The upstream portion may have an external volume of less than or equal to 155 cubic millimeters. The upstream portion may have an external volume of less than or equal to 150 cubic millimeters.

[0082] The upstream portion may have an external volume between 140 cubic millimeters and 160 cubic millimeters. The upstream portion may have an external volume between 145 cubic millimeters and 155 cubic millimeters.

[0083] The downstream section can be located at the downstream end of the cylinder.

[0084] The downstream portion may include an outlet. The downstream portion may include a downstream end cap.

[0085] The downstream portion may have a length of at least 2.5 mm. The downstream portion may have a length of at least 3 mm. The downstream portion may have a length of at least 3.5 mm.

[0086] The downstream portion may have a length of 4 mm or less. The downstream portion may have a length of 3.5 mm or less. The downstream portion may have a length of 3 mm or less.

[0087] The downstream portion may have a length between 2.5 mm and 4 mm.

[0088] The downstream portion may extend into the body. The downstream portion may extend into the body, and the chamber may include a downstream cavity defined by the downstream portion.

[0089] The downstream portion may have an external volume of at least 90 cubic millimeters. The downstream portion may have an external volume of at least 95 cubic millimeters. The downstream portion may have an external volume of at least 100 cubic millimeters.

[0090] The downstream portion may have an external volume of less than or equal to 110 cubic millimeters. The downstream portion may have an external volume of less than or equal to 105 cubic millimeters. The downstream portion may have an external volume of less than or equal to 100 cubic millimeters.

[0091] The downstream portion may have an external volume between 90 cubic millimeters and 110 cubic millimeters. The downstream portion may also have an external volume between 95 cubic millimeters and 105 cubic millimeters.

[0092] The downstream cavity may have an internal volume of at least 70 cubic millimeters. The downstream cavity may have an internal volume of at least 75 cubic millimeters. The downstream cavity may have an internal volume of at least 80 cubic millimeters.

[0093] The downstream cavity may have an internal volume of 90 cubic millimeters or less. The downstream cavity may have an internal volume of 85 cubic millimeters or less. The downstream cavity may have an internal volume of 80 cubic millimeters or less.

[0094] The downstream cavity may have an internal volume between 70 cubic millimeters and 90 cubic millimeters. The downstream cavity may also have an internal volume between 75 cubic millimeters and 85 cubic millimeters.

[0095] The downstream cavity may include a first section on a first side of the heating element and a second section on a second side of the heating element.

[0096] The first section of the downstream cavity may have an internal volume of at least 30 cubic millimeters. The first section of the downstream cavity may have an internal volume of at least 35 cubic millimeters. The first section of the downstream cavity may have an internal volume of at least 40 cubic millimeters.

[0097] The first section of the downstream cavity may have an internal volume of less than or equal to 50 cubic millimeters. The first section of the downstream cavity may have an internal volume of less than or equal to 45 cubic millimeters. The first section of the downstream cavity may have an internal volume of less than or equal to 40 cubic millimeters.

[0098] The first section of the downstream cavity may have an internal volume between 30 cubic millimeters and 50 cubic millimeters. The first section of the downstream cavity may have an internal volume between 35 cubic millimeters and 45 cubic millimeters.

[0099] The second section of the downstream cavity may have an internal volume of at least 30 cubic millimeters. The second section of the downstream cavity may have an internal volume of at least 35 cubic millimeters. The second section of the downstream cavity may have an internal volume of at least 40 cubic millimeters.

[0100] The second section of the downstream cavity may have an internal volume of less than or equal to 50 cubic millimeters. The second section of the downstream cavity may have an internal volume of less than or equal to 45 cubic millimeters. The second section of the downstream cavity may have an internal volume of less than or equal to 40 cubic millimeters.

[0101] The second section of the downstream cavity may have an internal volume between 30 cubic millimeters and 50 cubic millimeters. The second section of the downstream cavity may have an internal volume between 35 cubic millimeters and 45 cubic millimeters.

[0102] The first section and the second section of the downstream cavity may have a combined internal volume of at least 70 cubic millimeters. The first section and the second section of the downstream cavity may have a combined internal volume of at least 75 cubic millimeters. The first section and the second section of the downstream cavity may have a combined internal volume of at least 80 cubic millimeters.

[0103] The first section and the second section of the downstream cavity may have a combined internal volume of less than or equal to 90 cubic millimeters. The first section and the second section of the downstream cavity may have a combined internal volume of less than or equal to 85 cubic millimeters. The first section and the second section of the downstream cavity may have a combined internal volume of less than or equal to 80 cubic millimeters.

[0104] The first section of the downstream cavity and the second section of the downstream cavity may have a combined internal volume between 70 cubic millimeters and 90 cubic millimeters.

[0105] The main body can extend between the upstream and downstream sections.

[0106] The main body can define a chamber. The main body can define a chamber between the upstream and downstream portions.

[0107] The main body may have an external length of at least 16 mm. The main body may have an external length of at least 16.5 mm. The main body may have an external length of at least 17 mm.

[0108] The main body may have an external length of 18 mm or less. The main body may have an external length of 17.5 mm or less. The main body may have an external length of 17 mm or less.

[0109] The main body may have an external length between 16 mm and 18 mm.

[0110] The main body may have an external width of at least 11.5 mm. The main body may have an external width of at least 12 mm.

[0111] The main body may have an external width of 13 mm or less. The main body may have an external width of 12.5 mm or less. The main body may have an external width of 12 mm or less.

[0112] The main body may have an external width between 11.5 mm and 13 mm.

[0113] The main body may have an external depth of at least 5 mm. The main body may have an external depth of at least 5.5 mm. The main body may have an external depth of at least 6 mm.

[0114] The main body may have an external depth of 6.5 mm or less. The main body may have an external depth of 6 mm or less. The main body may have an external depth of 5.5 mm or less.

[0115] The main body may have an external depth between 5 mm and 6.5 mm.

[0116] The main body may have an internal cross-sectional area of ​​at least 10 square millimeters. The main body may have an internal cross-sectional area of ​​at least 15 square millimeters. The main body may have an internal cross-sectional area of ​​at least 20 square millimeters. The main body may have an internal cross-sectional area of ​​at least 25 square millimeters. The main body may have an internal cross-sectional area of ​​at least 30 square millimeters. The main body may have an internal cross-sectional area of ​​at least 35 square millimeters. The main body may have an internal cross-sectional area of ​​at least 40 square millimeters. The main body may have an internal cross-sectional area of ​​at least 45 square millimeters. The main body may have an internal cross-sectional area of ​​at least 50 square millimeters. The main body may have an internal cross-sectional area of ​​at least 51 square millimeters. The main body may have an internal cross-sectional area of ​​at least 53 square millimeters. The main body may have an internal cross-sectional area of ​​at least 55 square millimeters. The main body may have an internal cross-sectional area of ​​at least 57 square millimeters.

[0117] The main body may have an internal cross-sectional area of ​​300 square millimeters or less. The main body may have an internal cross-sectional area of ​​280 square millimeters or less. The main body may have an internal cross-sectional area of ​​260 square millimeters or less. The main body may have an internal cross-sectional area of ​​240 square millimeters or less. The main body may have an internal cross-sectional area of ​​220 square millimeters or less. The main body may have an internal cross-sectional area of ​​200 square millimeters or less. The main body may have an internal cross-sectional area of ​​180 square millimeters or less. The main body may have an internal cross-sectional area of ​​160 square millimeters or less. The main body may have an internal cross-sectional area of ​​140 square millimeters or less. The main body may have an internal cross-sectional area of ​​120 square millimeters or less. The main body may have an internal cross-sectional area of ​​100 square millimeters or less. The main body may have an internal cross-sectional area of ​​90 square millimeters or less. The main body may have an internal cross-sectional area of ​​80 square millimeters or less. The main body may have an internal cross-sectional area of ​​70 square millimeters or less. The main body may have an internal cross-sectional area of ​​69 square millimeters or less. The main body may have an internal cross-sectional area of ​​67 square millimeters or less. The main body may have an internal cross-sectional area of ​​65 square millimeters or less. The main body may have an internal cross-sectional area of ​​63 square millimeters or less. The main body may have an internal cross-sectional area of ​​61 square millimeters or less. The main body may have an internal cross-sectional area of ​​59 square millimeters or less. The main body may have an internal cross-sectional area of ​​57 square millimeters or less.

[0118] The main body may have an internal cross-sectional area between 40 square millimeters and 80 square millimeters.

[0119] The main body may have an internal cross-sectional area between 10 square millimeters and 300 square millimeters. The main body may have an internal cross-sectional area between 15 square millimeters and 260 square millimeters. The main body may have an internal cross-sectional area between 20 square millimeters and 220 square millimeters. The main body may have an internal cross-sectional area between 25 square millimeters and 180 square millimeters. The main body may have an internal cross-sectional area between 30 square millimeters and 160 square millimeters. The main body may have an internal cross-sectional area between 35 square millimeters and 120 square millimeters. The main body may have an internal cross-sectional area between 40 square millimeters and 100 square millimeters. The main body may have an internal cross-sectional area between 45 square millimeters and 80 square millimeters. The main body may have an internal cross-sectional area between 50 square millimeters and 70 square millimeters. The main body may have an internal cross-sectional area between 50 square millimeters and 69 square millimeters. The main body may have an internal cross-sectional area between 50 square millimeters and 67 square millimeters. The main body may have an internal cross-sectional area between 50 square millimeters and 65 square millimeters. The main body may have an internal cross-sectional area between 51 square millimeters and 63 square millimeters. The main body may have an internal cross-sectional area between 53 square millimeters and 61 square millimeters. The main body may have an internal cross-sectional area between 55 square millimeters and 59 square millimeters.

[0120] The internal cross-sectional area of ​​the main body can be obtained at the axial section of the main body.

[0121] The internal cross-sectional area of ​​the main body can be obtained over at least 50% of the length of the main body. The internal cross-sectional area of ​​the main body can be obtained over at least 80% of the length of the main body. The internal cross-sectional area of ​​the main body can be obtained over 100% of the length of the main body.

[0122] The main body may have an external perimeter of at least 30 mm. The main body may have an external perimeter of at least 31 mm. The main body may have an external perimeter of at least 32 mm. The main body may have an external perimeter of at least 33 mm. The main body may have an external perimeter of at least 34 mm.

[0123] The main body may have an external perimeter of 40 mm or less. The main body may have an external perimeter of 39 mm or less. The main body may have an external perimeter of 38 mm or less. The main body may have an external perimeter of 37 mm or less. The main body may have an external perimeter of 36 mm or less. The main body may have an external perimeter of 35 mm or less.

[0124] The main body may have an external perimeter between 30 mm and 40 mm. The main body may have an external perimeter between 30 mm and 39 mm. The main body may have an external perimeter between 31 mm and 38 mm. The main body may have an external perimeter between 32 mm and 37 mm. The main body may have an external perimeter between 33 mm and 36 mm. The main body may have an external perimeter between 34 mm and 35 mm.

[0125] The external perimeter of the main body can be obtained at the same point where the internal cross-sectional area of ​​the main body is measured.

[0126] The external perimeter of the main body can be obtained at the axial section of the main body.

[0127] The external perimeter of the subject can be the average external perimeter of at least 50% of the subject. The external perimeter of the subject can be the average external perimeter of at least 80% of the subject. The external perimeter of the subject can be the average external perimeter of the subject.

[0128] The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.2. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.22. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.24. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.26. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.28. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.3. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.32. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.34. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.36. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.38. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.4. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.42. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.44. The ratio of the outer perimeter of the main body to the internal cross-sectional area of ​​the main body may be at least 0.45.

[0129] The ratio of the external perimeter of the main body to its internal cross-sectional area can be less than or equal to 0.6. The ratio of the external perimeter of the main body to its internal cross-sectional area can be less than or equal to 0.58. The ratio of the external perimeter of the main body to its internal cross-sectional area can be less than or equal to 0.56. The ratio of the external perimeter of the main body to its internal cross-sectional area can be less than or equal to 0.54. The ratio of the external perimeter of the main body to its internal cross-sectional area can be less than or equal to 0.52. The ratio of the external perimeter of the main body to its internal cross-sectional area can be less than or equal to 0.5. The ratio of the external perimeter of the main body to its internal cross-sectional area can be less than or equal to 0.48. The ratio of the external perimeter of the main body to its internal cross-sectional area can be less than or equal to 0.46. The ratio of the external perimeter of the main body to its internal cross-sectional area can be less than or equal to 0.45.

[0130] The ratio of the outer perimeter of the main body to its internal cross-sectional area can be between 0.2 and 0.6. The ratio can be between 0.22 and 0.58. The ratio can be between 0.24 and 0.56. The ratio can be between 0.26 and 0.54. The ratio can be between 0.28 and 0.52. The ratio can be between 0.3 and 0.5. The ratio can be between 0.32 and 0.48. The ratio can be between 0.34 and 0.46.

[0131] The main body may have an external surface area of ​​at least 530 square millimeters. The main body may have an external surface area of ​​at least 535 square millimeters. The main body may have an external surface area of ​​at least 540 square millimeters. The main body may have an external surface area of ​​at least 545 square millimeters. The main body may have an external surface area of ​​at least 550 square millimeters.

[0132] The main body may have an external surface area of ​​570 square millimeters or less. The main body may have an external surface area of ​​565 square millimeters or less. The main body may have an external surface area of ​​560 square millimeters or less. The main body may have an external surface area of ​​555 square millimeters or less. The main body may have an external surface area of ​​550 square millimeters or less.

[0133] The main body may have an external surface area between 530 square millimeters and 570 square millimeters. The main body may have an external surface area between 535 square millimeters and 565 square millimeters. The main body may have an external surface area between 540 square millimeters and 560 square millimeters. The main body may have an external surface area between 545 square millimeters and 555 square millimeters.

[0134] The main body can be tubular.

[0135] An inlet may include one or more orifices. An inlet may include multiple orifices.

[0136] An outlet may include one or more orifices. An outlet may include multiple orifices.

[0137] The cylinder may include an airflow path extending between the inlet and the outlet.

[0138] The housing may include an airflow path extending between the inlet and the outlet.

[0139] The heating element can be a planar heating element or a resistance heating element.

[0140] The heating element may extend around at least 50% of the chamber. The heating element may extend around at least 60% of the chamber. The heating element may extend around at least 70% of the chamber. The heating element may extend around at least 80% of the chamber. The heating element may extend around at least 90% of the chamber. The heating element may extend around at least 95% of the chamber. The heating element may extend around 100% of the chamber.

[0141] The heating element may extend around 95% or less of the chamber. The heating element may extend around 90% or less of the chamber. The heating element may extend around 80% or less of the chamber. The heating element may extend around 70% or less of the chamber.

[0142] The heating element can extend completely around the chamber. The heating element can extend inside the chamber. The heating element can extend around the perimeter of the chamber.

[0143] The heating element may extend around the inner surface of the chamber. The heating element may be attached to or mounted to the perimeter of the chamber. The heating element may be attached to or mounted to the inner surface of the chamber. The heating element may be part of the housing. The heating element may be integrally formed with or integrally formed within the housing.

[0144] The heating element may extend around at least 50% of the internal surface area of ​​the chamber. The heating element may extend around at least 60% of the internal surface area of ​​the chamber. The heating element may extend around at least 70% of the internal surface area of ​​the chamber. The heating element may extend around at least 80% of the internal surface area of ​​the chamber. The heating element may extend around at least 90% of the internal surface area of ​​the chamber. The heating element may extend around at least 95% of the internal surface area of ​​the chamber. The heating element may extend around 100% of the internal surface area of ​​the chamber.

[0145] The heating element may extend around 95% or less of the internal surface area of ​​the chamber. The heating element may extend around 90% or less of the internal surface area of ​​the chamber. The heating element may extend around 80% or less of the internal surface area of ​​the chamber. The heating element may extend around 70% or less of the internal surface area of ​​the chamber.

[0146] The heating element may include one or more heating surfaces for heating the aerosol-generating matrix to form an aerosol.

[0147] One or more heating surfaces may include a first heating surface for heating a first aerosol generating matrix disposed within a first portion of the chamber to form an aerosol.

[0148] One or more heating surfaces may include a second heating surface for heating a second aerosol generating matrix disposed within a second part of the chamber to form an aerosol.

[0149] One or more heating surfaces may be planar heating surfaces.

[0150] One or more heating surfaces may include one or more planar heating surfaces for heating the aerosol generating matrix to form an aerosol.

[0151] One or more heating surfaces may include a first planar heating surface for heating a first aerosol generating matrix disposed within a first portion of the chamber to form an aerosol.

[0152] One or more heating surfaces may include a second planar heating surface for heating a second aerosol generating matrix disposed within a second part of the chamber to form an aerosol.

[0153] At least one of the one or more heating surfaces may have a surface area of ​​at least 25 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 30 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 35 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 40 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 45 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 50 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 55 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 60 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 65 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 70 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 75 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 80 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 85 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 90 square millimeters.

[0154] At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 200 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 190 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 180 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 170 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 160 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 150 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 140 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 130 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 120 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 115 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 110 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 105 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 100 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 95 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 90 square millimeters.

[0155] At least one of the one or more heating surfaces may have a surface area between 20 and 200 square millimeters. At least one of the one or more heating surfaces may have a surface area between 20 and 190 square millimeters. At least one of the one or more heating surfaces may have a surface area between 25 and 180 square millimeters. At least one of the one or more heating surfaces may have a surface area between 30 and 170 square millimeters. At least one of the one or more heating surfaces may have a surface area between 35 and 160 square millimeters. At least one of the one or more heating surfaces may have a surface area between 40 and 150 square millimeters. At least one of the one or more heating surfaces may have a surface area between 45 and 140 square millimeters. At least one of the one or more heating surfaces may have a surface area between 50 and 130 square millimeters. At least one of the one or more heating surfaces may have a surface area between 55 and 120 square millimeters. At least one of the one or more heating surfaces may have a surface area between 60 and 115 square millimeters. At least one of the one or more heating surfaces may have a surface area between 65 and 110 square millimeters. At least one of the one or more heating surfaces may have a surface area between 70 and 105 square millimeters. At least one of the one or more heating surfaces may have a surface area between 75 and 100 square millimeters. At least one of the one or more heating surfaces may have a surface area between 80 and 95 square millimeters. At least one of the one or more heating surfaces may have a surface area between 85 and 90 square millimeters.

[0156] The ratio of the surface area of ​​each of the one or more heating surfaces to the cross-sectional area of ​​the chamber in the plane where the heating element extends may be at least 0.3. The ratio of the surface area of ​​each of the one or more heating surfaces to the cross-sectional area of ​​the chamber in the plane where the heating element extends may be at least 0.35. The ratio of the surface area of ​​each of the one or more heating surfaces to the cross-sectional area of ​​the chamber in the plane where the heating element extends may be at least 0.4.

[0157] The ratio of the surface area of ​​each of the one or more heating surfaces to the cross-sectional area of ​​the chamber in the plane where the heating element extends may be less than or equal to 0.6. The ratio of the surface area of ​​each of the one or more heating surfaces to the cross-sectional area of ​​the chamber in the plane where the heating element extends may be less than or equal to 0.55. The ratio of the surface area of ​​each of the one or more heating surfaces to the cross-sectional area of ​​the chamber in the plane where the heating element extends may be less than or equal to 0.5.

[0158] The ratio of the surface area of ​​each of the one or more heating surfaces to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be between 0.3 and 0.6. The ratio of the surface area of ​​each of the one or more heating surfaces to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be between 0.35 and 0.55. The ratio of the surface area of ​​each of the one or more heating surfaces to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be between 0.4 and 0.5.

[0159] The cross-sectional area of ​​the heating element in the plane where it extends can be at least 25 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 30 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 35 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 40 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 45 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 50 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 55 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 60 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 65 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 70 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 72 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 75 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 80 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 85 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 90 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 95 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be at least 100 square millimeters.

[0160] The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 200 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 190 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 180 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 170 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 160 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 150 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 140 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 130 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 120 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 110 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 100 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 95 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 90 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 85 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 80 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be less than or equal to 75 square millimeters.

[0161] The cross-sectional area of ​​the heating element in the plane where it extends can be between 20 and 200 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be between 25 and 180 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be between 30 and 160 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be between 35 and 140 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be between 40 and 120 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be between 45 and 100 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be between 50 and 95 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be between 60 and 90 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be between 65 and 85 square millimeters. The cross-sectional area of ​​the heating element in the plane where it extends can be between 70 and 80 square millimeters. The cross-sectional area of ​​the heating element in the plane where the heating element extends can be between 70 square millimeters and 75 square millimeters.

[0162] The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be at least 100 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be at least 110 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be at least 120 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be at least 130 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be at least 140 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be at least 150 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be at least 160 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be at least 170 square millimeters.

[0163] The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 300 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 290 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 280 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 270 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 260 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 250 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 240 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 230 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 220 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 210 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 200 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 190 square millimeters. The cross-sectional area of ​​the chamber in the plane where the planar heating element extends can be less than or equal to 180 square millimeters.

[0164] The cross-sectional area of ​​the chamber within the plane where the planar heating element extends can be between 150 and 250 square millimeters. The cross-sectional area of ​​the chamber within the plane where the planar heating element extends can be between 150 and 240 square millimeters. The cross-sectional area of ​​the chamber within the plane where the planar heating element extends can be between 150 and 230 square millimeters. The cross-sectional area of ​​the chamber within the plane where the planar heating element extends can be between 160 and 220 square millimeters. The cross-sectional area of ​​the chamber within the plane where the planar heating element extends can be between 170 and 210 square millimeters. The cross-sectional area of ​​the chamber within the plane where the planar heating element extends can be between 180 and 200 square millimeters. The cross-sectional area of ​​the chamber within the plane where the planar heating element extends can be between 160 and 200 square millimeters.

[0165] The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.1. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.12. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.14. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.16. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.18. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.2. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.22. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.24. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.26. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.28. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.3. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.32. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.34. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.35.

[0166] The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.4. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.45. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.5. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.55. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.6. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.65. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.7. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be at least 0.75.

[0167] The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.9. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.85. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.80. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.75. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.7. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.65. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.6. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.55.

[0168] The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.5. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.48. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.46. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.44. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.42. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be less than or equal to 0.4.

[0169] The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be between 0.3 and 0.8.

[0170] The ratio of the cross-sectional area of ​​the heating element in the plane where it extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be between 0.1 and 0.9. The ratio of the cross-sectional area of ​​the heating element in the plane where it extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be between 0.15 and 0.8. The ratio of the cross-sectional area of ​​the heating element in the plane where it extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be between 0.2 and 0.7. The ratio of the cross-sectional area of ​​the heating element in the plane where it extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be between 0.25 and 0.6. The ratio of the cross-sectional area of ​​the heating element in the plane where it extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends can be between 0.3 and 0.5.

[0171] The heating element can be fixedly attached to the downstream section.

[0172] The heating element can extend from the downstream portion into the chamber and towards the upstream portion. The heating element can extend from the downstream portion into the body and towards the upstream portion.

[0173] The heating element may include one or more electrical connection portions. These electrical connection portions may be conductive. They may be spaced apart from each other. The electrical connection portions may include a first electrical connection portion and a second electrical connection portion. The first and second electrical connection portions may be positioned on opposite sides of the outlet. The first and second electrical connection portions may be configured to allow contact with an external power supply.

[0174] One or more electrical connection parts may be located at the upstream section.

[0175] The heating element may include an intermediate section extending between a downstream section and an upstream section. The downstream section may be located at the downstream end of the cylinder. The upstream section may be located at the upstream end of the cylinder.

[0176] The middle section can have a serpentine shape. The middle section can have a coiled shape. The middle section can have a spiral shape. The middle section can have a flower-like shape.

[0177] The intermediate section may include multiple segments. An intermediate section may include at least eight segments. An intermediate section may include sixteen or fewer segments. Multiple segments may be parallel to each other. Multiple segments may extend along the longitudinal axis of the cylinder.

[0178] Each of the multiple segments may have a width of at least 0.26 mm. Each of the multiple segments may have a width of at least 0.27 mm. Each of the multiple segments may have a width of at least 0.28 mm. Each of the multiple segments may have a width of at least 0.29 mm. Each of the multiple segments may have a width of at least 0.3 mm.

[0179] Each segment in a plurality of segments may have a width less than or equal to 0.34 mm. Each segment in a plurality of segments may have a width less than or equal to 0.33 mm. Each segment in a plurality of segments may have a width less than or equal to 0.32 mm. Each segment in a plurality of segments may have a width less than or equal to 0.31 mm. Each segment in a plurality of segments may have a width less than or equal to 0.3 mm.

[0180] Each of the multiple segments may have a width between 0.26 mm and 0.34 mm. Each of the multiple segments may have a width between 0.27 mm and 0.33 mm. Each of the multiple segments may have a width between 0.28 mm and 0.32 mm. Each of the multiple segments may have a width between 0.29 mm and 0.31 mm.

[0181] Multiple segments can be separated from each other through gaps.

[0182] The gap may have a width of at least 0.28 mm. The gap may have a width of at least 0.29 mm. The gap may have a width of at least 0.3 mm. The gap may have a width of at least 0.31 mm. The gap may have a width of at least 0.32 mm.

[0183] The gap may have a width of 0.36 mm or less. The gap may have a width of 0.35 mm or less. The gap may have a width of 0.34 mm or less. The gap may have a width of 0.33 mm or less. The gap may have a width of 0.32 mm or less.

[0184] The gap can have a width between 0.28 mm and 0.36 mm. The gap can have a width between 0.29 mm and 0.35 mm. The gap can have a width between 0.3 mm and 0.34 mm. The gap can have a width between 0.31 mm and 0.33 mm.

[0185] Heating elements can be made of iron-based alloys. Heating elements can be made of nickel alloys. Heating elements can be made of ceramics. Heating elements can be made of stainless steel. Heating elements can be made of SS316L stainless steel aluminum alloy. Heating elements can be made of nickel-chromium alloys. Heating elements can be made of ceramic-coated metal.

[0186] The heating element may have a length of at least 13 mm. The heating element may have a length of at least 13.5 mm. The heating element may have a length of at least 14 mm. The heating element may have a length of at least 14.5 mm. The heating element may have a length of at least 15 mm. The heating element may have a length of at least 15.5 mm. The heating element may have a length of at least 16 mm.

[0187] Heating elements may have a length of 20 mm or less. Heating elements may have a length of 19.5 mm or less. Heating elements may have a length of 19 mm or less. Heating elements may have a length of 18.5 mm or less. Heating elements may have a length of 18 mm or less. Heating elements may have a length of 17.5 mm or less. Heating elements may have a length of 17 mm or less.

[0188] The heating element can have a length between 13 mm and 20 mm. The heating element can have a length between 13.5 mm and 19.5 mm. The heating element can have a length between 14 mm and 19 mm. The heating element can have a length between 14.5 mm and 18.5 mm. The heating element can have a length between 15 mm and 18 mm. The heating element can have a length between 15.5 mm and 17.5 mm. The heating element can have a length between 16 mm and 17 mm.

[0189] The heating element may have a width of at least 8 mm. The heating element may have a width of at least 8.5 mm. The heating element may have a width of at least 9 mm. The heating element may have a width of at least 9.5 mm.

[0190] The heating element may have a width of 12 mm or less. The heating element may have a width of 11.5 mm or less. The heating element may have a width of 11 mm or less. The heating element may have a width of 10.5 mm or less.

[0191] The heating element may have a width between 8 mm and 12 mm. The heating element may have a width between 8.5 mm and 11.5 mm. The heating element may have a width between 9 mm and 11 mm. The heating element may have a width between 9.5 mm and 10.5 mm.

[0192] The heating element may have a thickness of at least 0.1 mm. The heating element may have a thickness of at least 0.15 mm.

[0193] The heating element may have a thickness of 0.3 mm or less. The heating element may have a thickness of 0.25 mm or less. The heating element may have a thickness of 0.2 mm or less.

[0194] The heating element can have a thickness between 0.1 mm and 0.3 mm.

[0195] At least one of the one or more heating surfaces may have a surface area of ​​at least 70 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 75 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 80 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 85 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​at least 90 square millimeters.

[0196] At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 110 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 105 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 100 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 95 square millimeters. At least one of the one or more heating surfaces may have a surface area of ​​less than or equal to 90 square millimeters.

[0197] At least one of the one or more heating surfaces may have a surface area between 70 and 110 square millimeters. At least one of the one or more heating surfaces may have a surface area between 75 and 105 square millimeters. At least one of the one or more heating surfaces may have a surface area between 80 and 100 square millimeters. At least one of the one or more heating surfaces may have a surface area between 85 and 95 square millimeters.

[0198] The surface area of ​​the first heating surface can be substantially the same as the surface area of ​​the second heating surface.

[0199] The inlet may extend along the width of the housing. The outlet may extend along the width of the housing. The heating element may be aligned with at least one of the inlet and outlet.

[0200] An aerosol generating matrix may include one or more aerosol generating matrices. An aerosol generating matrix may include multiple aerosol generating matrices. An aerosol generating matrix may include a first aerosol generating matrix. An aerosol generating matrix may include a second aerosol generating matrix. An aerosol generating matrix may include both a first aerosol generating matrix and a second aerosol generating matrix.

[0201] One or more aerosol generating matrices may include one or more solid aerosol generating matrices.

[0202] The first aerosol generating matrix can be placed in the first part of the chamber. The second aerosol generating matrix can be placed in the second part of the chamber.

[0203] The heating element can be arranged such that the first aerosol generating matrix and the second aerosol generating matrix are substantially separated from each other.

[0204] The first aerosol generating matrix may be substantially the same as the second aerosol generating matrix in one or more of the following aspects: shape; size; thickness; width; length; mass; orientation; material composition; volume.

[0205] The first aerosol-generating matrix may be substantially the same as the second aerosol-generating matrix in one or more of the following aspects: volume.

[0206] Advantageously, a first aerosol generating matrix and a second aerosol generating matrix having the same or similar volume can improve heating efficiency.

[0207] Suitable types of materials for use in aerosol generation matrices are described below, and include, for example, tobacco shred fillers, homogenized tobacco materials such as cast leaves, aerosol generation films, gel compositions, and powders.

[0208] As used herein, the term "solid" refers to an aerosol-generating matrix that is neither a liquid nor a gas and does not flow such that it retains its shape and form at room temperature. In the context of this invention, the term "solid" includes gel materials and compositions.

[0209] Preferably, the aerosol generating matrix in the chamber of the cylinder has a density of at least 0.1 mg / mm³. More preferably, the shredded aerosol generating matrix in the chamber of the cylinder has a density of at least 0.2 mg / mm³, more preferably at least 0.3 mg / mm³, more preferably at least 0.4 mg / mm³, and even more preferably at least 0.5 mg / mm³.

[0210] Preferably, the density of the solid aerosol generating matrix in the chamber of the cylinder is less than 2 mg / mm³, more preferably less than 1.75 mg / mm³, more preferably less than 1.5 mg / mm³, more preferably less than 1.25 mg / mm³, and even more preferably less than 1 mg / mm³.

[0211] As used herein, the term "density" refers to the bulk density of the solid aerosol generating matrix within a room. Density is calculated by dividing the total mass of the solid aerosol generating matrix by the total volume of the room. Therefore, density corresponds to the weight of the solid aerosol generating matrix per unit volume within the room. This is different from the density of the solid aerosol generating matrix itself.

[0212] At least a portion of the aerosol-generating matrix within the chamber will be in direct contact with one or more planar heater surfaces. Preferably, the aerosol-generating matrix is ​​configured to be in direct contact with one or more planar heating surfaces on a total surface area corresponding to at least 35% of the total cross-sectional area of ​​the chamber in the plane where the planar heating element extends. This means that the ratio between the total surface area of ​​the aerosol-generating matrix in direct contact with the planar heating surface and the total cross-sectional area of ​​the chamber in the plane of the planar heater is at least 0.35.

[0213] Preferably, the aerosol generating matrix is ​​configured to be in direct contact with one or more planar heating surfaces on at least 40% and preferably at least 45% of the total surface area corresponding to the total cross-sectional area of ​​the plane in which the planar heating element extends.

[0214] For the purposes of this invention, if the aerosol generating matrix comes into contact with a portion of a planar heating surface that is heated during use, without any space or intermediate material between them, then the matrix (or a portion thereof) is in "direct contact" with the planar heating surface. Due to this direct contact, heat can be transferred directly from the planar heating surface to the contact portion of the aerosol generating matrix.

[0215] Preferably, the aerosol generating matrix is ​​in direct contact with the planar heating surface over a total area of ​​at least 40 square millimeters, more preferably at least 45 square millimeters, more preferably at least 50 square millimeters, more preferably at least 55 square millimeters, and more preferably at least 60 square millimeters. The aerosol generating matrix may be in direct contact with the planar heating surface over a total area of ​​up to 120 square millimeters, or up to 110 square millimeters, or up to 100 square millimeters.

[0216] For example, the aerosol generating matrix can be in direct contact with the planar heating surface over a total area between 40 and 120 square millimeters, or between 45 and 120 square millimeters, or between 50 and 110 square millimeters, or between 55 and 110 square millimeters, or between 60 and 100 square millimeters.

[0217] The aerosol generating matrix preferably fills at least 50% of the chamber, more preferably at least 60%, and even more preferably at least 70%. The filling percentage is preferably less than 90%. The filling percentage corresponds to the percentage of the chamber occupied by the aerosol generating matrix.

[0218] Preferably, the aerosol generating matrix comprises an aerosol forming agent. Suitable aerosol forming agents include, for example, polyols such as triethylene glycol, 1,3-butanediol, propylene glycol, and glycerol; esters of polyols such as mono-, di-, or triacetic acid esters of glycerol; aliphatic esters of monocarboxylic acids, dicarboxylic acids, or polycarboxylic acids such as dimethyl dodecanoate and dimethyl tetradecanoate; and combinations thereof.

[0219] Preferably, the aerosol forming agent comprises one or more of glycerol and propylene glycol. The aerosol forming agent may consist of glycerol or propylene glycol, or a combination of glycerol and propylene glycol.

[0220] In some embodiments, the aerosol generating matrix preferably contains at least 5% by weight of an aerosol forming agent based on the dry weight of the aerosol generating matrix, more preferably at least 10% by weight based on the dry weight of the aerosol generating matrix, and even more preferably at least 15% by weight based on the dry weight of the aerosol forming agent. In such embodiments, the aerosol generating matrix preferably contains no more than 30% by weight of an aerosol forming agent based on the dry weight of the aerosol generating matrix, more preferably no more than 25% by weight based on the dry weight of the aerosol forming agent, and even more preferably no more than 20% by weight based on the dry weight of the aerosol forming agent. For example, the aerosol forming agent content of the aerosol generating matrix can be between 5% by weight and 30% by weight, or between 10% by weight and 25% by weight, or between about 15% by weight and about 20% by weight based on the dry weight of the aerosol generating matrix. In such embodiments, the aerosol forming agent content is therefore relatively low.

[0221] In other embodiments, the aerosol generating matrix preferably contains at least 40% by weight of an aerosol forming agent based on the dry weight of the aerosol generating matrix, more preferably at least 45% by weight based on the dry weight of the aerosol forming agent, and even more preferably at least 50% by weight based on the dry weight of the aerosol forming agent. In such embodiments, the aerosol generating matrix preferably contains no more than 80% by weight of an aerosol forming agent based on the dry weight of the aerosol generating matrix, more preferably no more than 75% by weight based on the dry weight of the aerosol forming agent, and even more preferably no more than 70% by weight based on the dry weight of the aerosol forming agent. For example, the aerosol forming agent content of the aerosol generating matrix can be between 40% by weight and 80% by weight, or between 45% by weight and 75% by weight, or between about 50% by weight and about 70% by weight based on the dry weight of the aerosol generating matrix. In such embodiments, the aerosol forming agent content is therefore relatively high.

[0222] The aerosol generating matrix preferably comprises at least one of tobacco and nicotine. The aerosol generating matrix may contain tobacco, which inherently contains nicotine. Alternatively or additionally, the aerosol generating matrix may contain exogenous nicotine, which is added separately as a specific component from any tobacco plant material. In some embodiments, the aerosol generating matrix may be substantially tobacco-free or contain no tobacco at all.

[0223] As used herein with reference to the invention, the term "nicotine" is used to describe nicotine, nicotine base, or nicotine salt. In embodiments where the aerosol generating matrix comprises nicotine base or nicotine salt, the amount of nicotine described herein is either the amount of free base nicotine or the amount of protonated nicotine.

[0224] Preferably, the aerosol generating matrix contains at least 0.5% by weight of nicotine on a dry weight basis. More preferably, the aerosol generating matrix contains at least 1% by weight of nicotine on a dry weight basis. Even more preferably, the aerosol generating matrix contains at least 2% by weight of nicotine on a dry weight basis. Alternatively, the aerosol generating matrix preferably contains less than 10% by weight of nicotine on a dry weight basis. More preferably, the aerosol generating matrix contains less than 8% by weight of nicotine on a dry weight basis. More preferably, the aerosol generating matrix contains less than 6% by weight of nicotine on a dry weight basis.

[0225] For example, the aerosol generating matrix may contain nicotine in the range of 0.5% to 10% by weight on a dry weight basis, or nicotine in the range of 1% to 8% by weight, or nicotine in the range of 2% to 6% by weight.

[0226] In some embodiments, the aerosol generating matrix may be in the form of one or more sheets of a solid aerosol generating matrix. Preferably, the one or more sheets of the solid aerosol generating matrix comprise at least one of nicotine and tobacco, and at least one aerosol forming agent.

[0227] As used in this article, the term "sheet" describes layered elements whose width and length are significantly greater than their thickness.

[0228] In such embodiments, the density of the solid aerosol generating matrix inside the cylinder is preferably at least 0.3 mg / mm³, preferably at least 0.35 mg / mm³, more preferably at least 0.4 mg / mm³, more preferably at least 0.45 mg / mm³, and even more preferably at least 0.5 mg / mm³.

[0229] For example, the density of the solid aerosol generating matrix in the chamber of the cylinder may correspond to a chamber density between 0.3 mg / mm³ and 2 mg / mm³, or between 0.35 mg / mm³ and 1.75 mg / mm³, or between 0.4 mg / mm³ and 1.5 mg / mm³, or between 0.45 mg / mm³ and 1.25 mg / mm³, or between 0.5 mg / mm³ and 1 mg / mm³.

[0230] The thickness of one or more sheets of the solid aerosol generating matrix can be adjusted according to the desired configuration of the sheets. In some embodiments, each of the one or more sheets of the solid aerosol generating matrix may have an average thickness of less than 500 micrometers, or less than 400 micrometers, or less than 300 micrometers. Preferably, in such embodiments, each of the one or more sheets of the solid aerosol generating matrix may have a thickness of at least 100 micrometers, or at least 150 micrometers, or at least 200 micrometers. For example, each of the one or more sheets of the aerosol generating matrix may have an average thickness between 100 micrometers and 500 micrometers, or between 150 micrometers and 400 micrometers, or between 200 micrometers and 300 micrometers.

[0231] In such embodiments, one or more sheets are preferably folded, gathered, rolled, or pleated.

[0232] In alternative embodiments, one or more sheets may have an average thickness of at least 1 mm, or at least 1.2 mm, or at least 1.5 mm. In such embodiments, where one or more sheets have a relatively high thickness, it is possible to use a single sheet of solid aerosol-generated matrix on at least one side and preferably both sides of the planar heating element.

[0233] One or more sheets of a solid aerosol generating matrix can be disposed on a suitable carrier element. For example, one or more sheets of a solid aerosol generating matrix can be deposited onto at least one surface of a sheet of an inert carrier material, such as paper or cardboard. This can provide improved stiffness to the one or more sheets of the solid aerosol generating matrix, which facilitates the process of filling a cylinder with one or more sheets during production.

[0234] One or more sheets of a solid aerosol generating matrix may be in the form of one or more aggregated sheets. As used herein, the term “aggregate” means that the sheet is wound, folded, or otherwise compressed or contracted substantially transverse to a defined axis.

[0235] Alternatively or additionally, one or more sheets of the solid aerosol generating matrix may be in the form of one or more rolled sheets, preferably one or more aggregated rolled sheets. As used herein, the term "rolled" means that the sheet has a plurality of substantially parallel ridges or corrugations.

[0236] In embodiments comprising one or more sheets of aerosol generating matrix, the chamber of the cylinder preferably contains at least 250 mg of solid aerosol generating matrix, more preferably at least 300 mg of solid aerosol generating matrix, and even more preferably at least 350 mg of solid aerosol generating matrix. The chamber of the cylinder may contain up to 1000 mg of solid aerosol generating matrix, or up to 750 mg of solid aerosol generating matrix, or up to 500 mg of solid aerosol generating matrix. For example, the chamber of the cylinder may contain between 250 mg and 1000 mg of solid aerosol generating matrix, or between 300 mg and 750 mg of solid aerosol generating matrix, or between 350 mg and 500 mg of solid aerosol generating matrix.

[0237] One or more sheets of the solid aerosol generating matrix may include one or more sheets of homogenized plant material, preferably homogenized tobacco material. The aerosol forming agent content of the homogenized tobacco material is preferably within the range defined above for aerosol generating matrices having a relatively low aerosol forming agent content.

[0238] Alternatively or additionally, one or more sheets of the solid aerosol generating matrix may comprise one or more sheets of an aerosol generating membrane comprising a cellulose-based film-forming agent, nicotine, and an aerosol forming agent. The aerosol generating membrane may also comprise a cellulose-based reinforcing agent. The aerosol generating membrane may also comprise water, preferably 30% by weight or less.

[0239] As used herein, the term "membrane" is used to describe a solid, layered element whose thickness is less than its width or length. Membranes can be self-supporting.

[0240] The aerosol forming agent content of the aerosol generating membrane is within the range defined above for aerosol generating matrices with relatively high aerosol forming agent content.

[0241] In the context of this invention, the term "cellulose-based film-forming agent" is used to describe cellulose polymers capable of forming continuous films alone or in the presence of an auxiliary thickener. Preferably, the cellulose-based film-forming agent is selected from hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), ethylcellulose (EC), hydroxyethyl methylcellulose (HEMC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), and combinations thereof. In a particularly preferred embodiment, the cellulose-based film-forming agent is HPMC.

[0242] Aerosol generating membranes suitable for use as aerosol generating matrix in aerosol generating articles according to the present invention are described in WO-A-2020 / 207733 and WO-A-2022 / 074157.

[0243] Alternatively or additionally, one or more sheets of the solid aerosol generating matrix may comprise one or more sheets containing a gel composition comprising nicotine, at least one gelling agent, and an aerosol forming agent. The gel composition is preferably tobacco-free.

[0244] Gel compositions suitable for use as aerosol-generating matrices in aerosol-generating articles according to the present invention are described in WO-A-2021 / 170642.

[0245] Preferably, the gel composition comprises at least 50% by weight of an aerosol forming agent on a dry weight basis, more preferably at least 60% by weight, and even more preferably at least 70% by weight. The gel composition may comprise up to 80% by weight of an aerosol forming agent. The aerosol forming agent in the gel composition is preferably glycerol.

[0246] In other embodiments, the aerosol generating matrix may be in the form of a shredded aerosol generating matrix. Preferably, the shredded aerosol generating matrix comprises at least one of tobacco and nicotine, and at least one aerosol forming agent.

[0247] As used herein, the term "shredded" describes the aerosol-generating matrix as taking the form of multiple thin strips or bands. Generally, shredded aerosol-generating matrix is ​​formed by cutting or shredding a larger portion of the aerosol-generating matrix (such as sheets, leaves, or other pieces of plant material). Individual strips or strands are typically elongated in form, with their length exceeding their width and thickness.

[0248] Preferably, in such embodiments, the density of the shredded aerosol generating matrix in the chamber of the cylinder is less than 1 mg / mm³, more preferably less than 0.9 mg / mm³, more preferably less than 0.8 mg / mm³, and even more preferably less than 0.7 mg / mm³.

[0249] For example, the density of the shredded aerosol generating matrix in the chamber of the cylinder may correspond to a chamber density between 0.1 mg / mm³ and 1 mg / mm³, or between 0.2 mg / mm³ and 0.9 mg / mm³, or between 0.3 mg / mm³ and 0.8 mg / mm³, or between 0.4 mg / mm³ and 0.7 mg / mm³, or between 0.5 mg / mm³ and 0.7 mg / mm³.

[0250] The chamber of the cartridge preferably contains at least 100 mg of chopped aerosol generating matrix, more preferably at least 125 mg of chopped aerosol generating matrix, and even more preferably at least 150 mg of chopped aerosol generating matrix. The chamber of the cartridge may contain up to 300 mg of chopped aerosol generating matrix, or up to 275 mg of chopped aerosol generating matrix, or up to 250 mg of chopped aerosol generating matrix. For example, the chamber of the cartridge may contain between 100 mg and 300 mg of chopped aerosol generating matrix, or between 125 mg and 275 mg of chopped aerosol generating matrix, or between 150 mg and 250 mg of chopped aerosol generating matrix.

[0251] The shredded aerosol-generating matrix preferably has a cut width of at least 0.3 mm, more preferably at least 0.4 mm, more preferably at least 0.5 mm, and more preferably at least 0.6 mm. Preferably, the shredded aerosol-generating matrix has a cut width of less than 2 mm, more preferably less than 1.75 mm, more preferably less than 1.5 mm, more preferably less than 1.25 mm, and more preferably less than 1 mm.

[0252] For example, the cut width of the shredded aerosol generating matrix can be between 0.3 mm and 2 mm, or between 0.4 mm and 1.75 mm, or between 0.5 mm and 1.5 mm, or between 0.6 mm and 1 mm.

[0253] The shredded aerosol generating matrix can be in the form of shredded tobacco material (such as shredded filler). Alternatively, the shredded aerosol generating matrix can be in the form of shredded homogenized plant material (such as homogenized tobacco material). Alternatively, as described in more detail below, the shredded aerosol generating matrix can be in the form of shredded non-tobacco material.

[0254] In some preferred embodiments of the invention, the shredded aerosol-generating matrix is ​​a shredded filler. In the context of this specification, the term "shredded filler" is used to describe blends of shredded plant material (such as tobacco plant material), particularly including one or more of leaves, processed stems and ribs, and homogenized plant material.

[0255] Preferably, the shredded filler is impregnated with an aerosol forming agent. The shredded filler preferably contains between 5% and 20% of an aerosol forming agent based on dry weight, more preferably between 10% and 18% by weight based on dry weight, and even more preferably between 12% and 15% by weight based on dry weight.

[0256] In some embodiments, the shredded aerosol-generating matrix comprises shredded homogenized plant material, preferably shredded homogenized tobacco material. Suitable homogenized plant materials for use in this invention have been described above.

[0257] In other embodiments, the shredded aerosol-generating matrix comprises an aerosol-generating membrane. Suitable aerosol-generating membranes have been described above.

[0258] In an alternative embodiment of the invention, the shredded aerosol-generating matrix may comprise a gel composition. Suitable gel compositions have been described above.

[0259] In an alternative embodiment, the solid aerosol generating matrix may contain at least one of tobacco and nicotine, as well as multiple particles.

[0260] In such embodiments, the density of the solid aerosol generating matrix inside the cylinder is preferably at least 0.3 mg / mm³, preferably at least 0.35 mg / mm³, more preferably at least 0.4 mg / mm³, more preferably at least 0.45 mg / mm³, and even more preferably at least 0.5 mg / mm³.

[0261] For example, the density of the solid aerosol generating matrix in the chamber of the cylinder may correspond to a chamber density between 0.3 mg / mm³ and 2 mg / mm³, or between 0.35 mg / mm³ and 1.75 mg / mm³, or between 0.4 mg / mm³ and 1.5 mg / mm³, or between 0.45 mg / mm³ and 1.25 mg / mm³, or between 0.5 mg / mm³ and 1 mg / mm³.

[0262] The particles of the solid aerosol generating matrix are preferably disposed directly in the chamber of the cylinder. However, alternatively, the particles of the solid aerosol generating matrix can be disposed in one or more permeable containers, such as one or more permeable bags. The one or more permeable bags can then be inserted into the chamber of the cylinder before use.

[0263] The bag can have any suitable size to be positioned within the chamber of the cylinder. Preferably, the first permeable bag can be positioned within a first portion of the chamber of the cylinder. Preferably, the second permeable bag can be positioned within a second portion of the chamber of the cylinder. For example, the permeable bag can have an external volume of at least 180 cubic millimeters, such as at least 200 cubic millimeters, such as at least 220 cubic millimeters, such as at least 240 cubic millimeters, such as at least 260 cubic millimeters. The permeable bag can have an external volume of less than or equal to 350 cubic millimeters, such as less than 330 cubic millimeters, such as less than 310 cubic millimeters, such as less than 290 cubic millimeters.

[0264] Multiple particles of the solid aerosol generating matrix can be arranged in the form of loose particles. Alternatively, the multiple particles of the solid aerosol generating matrix can be compressed into one or more tablets. One or more tablets can then be placed in the chamber of the cartridge. The one or more tablets may contain multiple particles of tobacco (e.g., ground tobacco). The one or more tablets may contain multiple particles containing nicotine. One or more tablets can be inserted into the chamber of the cartridge before use.

[0265] The tablets can have any suitable size to be positioned within the chamber of the cartridge. Preferably, the first tablet can be positioned within a first portion of the chamber of the cartridge. Preferably, the second tablet can be positioned within a second portion of the chamber of the cartridge. For example, the tablets can have an external volume of at least 180 cubic millimeters, such as at least 200 cubic millimeters, such as at least 220 cubic millimeters, such as at least 240 cubic millimeters, such as at least 260 cubic millimeters. The tablets can have an external volume of less than or equal to 350 cubic millimeters, such as less than 330 cubic millimeters, such as less than 310 cubic millimeters, such as less than 290 cubic millimeters.

[0266] As defined above, the solid aerosol generating matrix includes at least one of tobacco and nicotine, as well as multiple particles.

[0267] In some embodiments, the maximum size of each particle in the granules is preferably at least 0.05 mm, more preferably at least 0.1 mm, more preferably at least 0.15 mm, more preferably at least 0.2 mm, more preferably at least 0.25 mm, more preferably at least 0.5 mm, more preferably at least 0.75 mm, and more preferably at least 1 mm. Preferably, the maximum size of each particle in the granules does not exceed 10 mm, more preferably not more than 9 mm, more preferably not more than 8 mm, more preferably not more than 6 mm, and more preferably not more than 5 mm. Providing relatively large particles within these ranges may be preferred because the shell includes an air inlet and an air outlet as described below. Thus, the relatively large maximum size of the particles will ensure that particles are not lost through the inlet and outlet orifices.

[0268] The maximum size of a particle corresponds to its maximum outer diameter. In the case where the particle is substantially spherical, the maximum size will correspond to its diameter.

[0269] In such embodiments, the plurality of particles preferably comprises at least two particles of a solid aerosol generating matrix, more preferably at least five particles of a solid aerosol generating matrix, more preferably at least ten particles of a solid aerosol generating matrix, more preferably at least twenty particles of a solid aerosol generating matrix, and even more preferably at least thirty particles. The plurality of particles may contain up to 200 particles.

[0270] In other embodiments, the solid aerosol generating matrix can be in the form of a powder having a much larger number of much smaller particles. For example, in such embodiments, the powder can be formed from particles having a D50 size between 50 and 80 micrometers, between 50 and 75 micrometers, between 55 and 75 micrometers, between 55 and 70 micrometers, or between 60 and 70 micrometers.

[0271] As used herein with reference to this invention, the term "D50 size" refers to the median particle size of a particulate material or powder. The D50 size is the particle size that divides the distribution into two halves, where half of the particles are larger than the D50 size and half are smaller than the D50 size. The particle size distribution can be determined by laser diffraction. For example, the particle size distribution can be determined by laser diffraction using a Malvern Mastersizer 3000 laser diffractometer particle size analyzer according to the manufacturer's instructions.

[0272] The powder can be formed from particles having a D95 size between 80 and 130 micrometers, between 90 and 125 micrometers, between 100 and 120 micrometers, or between 110 and 120 micrometers.

[0273] As used herein with reference to the invention, the term "D95 size" refers to the size of 95% of particles by mass that are smaller than this value.

[0274] The powder can be formed from particles having a maximum diameter between 50 and 250 micrometers, between 80 and 225 micrometers, or between 100 and 125 micrometers.

[0275] In some embodiments, the mass of each particle may preferably be at least 0.05 micrograms, more preferably at least 0.1 micrograms, more preferably at least 0.2 micrograms, more preferably at least 0.3 micrograms, more preferably at least 0.4 micrograms, more preferably at least 0.5 micrograms, more preferably at least 0.6 micrograms, more preferably at least 0.7 micrograms, more preferably at least 0.8 micrograms, more preferably at least 0.9 micrograms, more preferably at least 1 microgram, more preferably at least 10 micrograms, more preferably at least 100 micrograms, more preferably at least 200 micrograms, more preferably at least 500 micrograms, more preferably at least 1 milligram. The mass of each particle may preferably not exceed 600 milligrams, more preferably not exceed 500 milligrams, more preferably not exceed 400 milligrams, more preferably not exceed 300 milligrams, more preferably not exceed 200 milligrams, more preferably not exceed 100 milligrams, more preferably not exceed 50 milligrams, more preferably not exceed 10 milligrams.

[0276] As defined above, the solid aerosol generating matrix comprises at least one of tobacco and nicotine, and multiple particles. The multiple particles can have various forms and compositions. For example, the multiple particles may include: nicotine-containing powder; granules of ground tobacco; or multiple beads, pellets, or particles of the solid aerosol generating matrix.

[0277] As described above, the solid aerosol generating matrix may contain an aerosol forming agent.

[0278] The matrix for generating solid aerosols can be in powder form.

[0279] The solid aerosol generating matrix can be a powder containing nicotine. As mentioned above, the powder can contain at least one aerosol forming agent.

[0280] In some embodiments, the plurality of particles may be particles of ground tobacco.

[0281] In an alternative embodiment, the solid aerosol generating matrix may comprise a plurality of particles containing a gel composition comprising nicotine, at least one gelling agent, and an aerosol forming agent. Suitable gel compositions have been described above.

[0282] The multiple particles of the gel composition may be gel beads. Gel beads may be formed by molding or any suitable means known to those skilled in the art.

[0283] In alternative embodiments of the invention, the solid aerosol generating matrix may include core-shell particles. The core-shell particles may include an inner core and an outer shell; the inner core comprises tobacco particles and a liquid solvent comprising one or more aerosol forming agents; and the outer shell encapsulates the inner core, the outer shell comprising at least one film-forming polymer. In such embodiments, the solid aerosol generating matrix may comprise at least 20% by weight of tobacco particles and at least 30% by weight of one or more aerosol forming agents on a dry weight basis. Suitable aerosol forming agents have been described above.

[0284] The downstream portion may contain a transparent material. The downstream portion may be formed of a transparent material. The downstream portion may contain a translucent material. The downstream portion may be formed of a translucent material. The downstream portion may contain plastic. The downstream portion may contain high-temperature plastic. The downstream portion may be formed of a liquid crystal polymer, polyetheretherketone, or a cyclic olefin copolymer. The downstream portion may be injection molded.

[0285] The upstream portion may contain a transparent material. The upstream portion may be formed of a transparent material. The upstream portion may contain a translucent material. The upstream portion may be formed of a translucent material. The upstream portion may contain plastic. The upstream portion may contain high-temperature plastic. The upstream portion may be formed of a liquid crystal polymer, polyetheretherketone, or a cyclic olefin copolymer. The upstream portion may be injection molded.

[0286] The body can be formed from plant materials. The body can be formed from metal. The body can be formed from aluminum. The body can be formed from an alloy. The body can be formed from stainless steel. The body can be formed from plastic. The body can contain high-temperature plastics. The body can be formed from liquid crystal polymers, polyetheretherketones, or cyclic olefin copolymers. The body can be injection molded.

[0287] An aerosol generation system is also provided. The aerosol generation system may include an aerosol generation device. The aerosol generation system may include a cylinder. The cylinder may include a housing having an inlet and an outlet. The cylinder may include a chamber between the inlet and the outlet. The cylinder may include a heating element for heating an aerosol forming matrix to form an aerosol. The heating element may extend into the chamber. The chamber may include a first portion on a first side of the heating element and a second portion on a second side of the heating element. The cylinder may include an aerosol generating matrix disposed within at least one of the first and second portions. The first and second portions may have a combined internal volume of at least 500 cubic millimeters.

[0288] An aerosol generation system is also provided, comprising an aerosol generation device and a cylinder, the cylinder comprising: a shell having an inlet and an outlet and a chamber between the inlet and the outlet; a heating element for heating an aerosol forming matrix to form an aerosol, the heating element extending into the chamber; the chamber comprising a first portion on a first side of the heating element and a second portion on a second side of the heating element; and an aerosol generating matrix disposed within at least one of the first portion and the second portion, wherein the first portion and the second portion have a combined internal volume of at least 500 cubic millimeters.

[0289] An aerosol generating device may include a main body.

[0290] The aerosol generating apparatus may include a device cavity for receiving the tube.

[0291] The aerosol generating device may include a cover.

[0292] The aerosol generating device may include a power source. The power source may be a battery.

[0293] The aerosol generating device may include a controller.

[0294] The following is a non-exhaustive list of non-limiting examples. Any one or more features of these examples may be combined with any one or more features of another example, embodiment, or aspect described herein.

[0295] EX1. A cylinder for an aerosol generation apparatus, the cylinder comprising: a shell having an inlet and an outlet, and an aerosol generation matrix.

[0296] EX2. The cylinder according to Example EX1 includes a chamber between the inlet and the outlet.

[0297] EX3. The cylinder according to Example EX2 includes a heating element for heating the aerosol forming matrix to form an aerosol.

[0298] EX4. A cylinder according to Example EX3, wherein the heating element extends into the chamber.

[0299] EX5. According to Example EX3 or EX4, the chamber includes a first portion on a first side of the heating element and a second portion on a second side of the heating element.

[0300] EX6. The cylinder according to Example EX5, wherein the aerosol generating matrix is ​​disposed within at least one of the first portion and the second portion.

[0301] EX7. The cylinder according to any of the foregoing examples, wherein the housing includes a body extending between an upstream portion and a downstream portion.

[0302] EX8. The cylinder according to Example EX7, wherein the upstream portion includes the inlet.

[0303] EX9. A cylinder according to example EX7 or EX8, wherein the downstream portion includes the outlet.

[0304] EX10. A cylinder according to any one of Examples EX7 to EX9, wherein the body has an internal area of ​​at least 40 square millimeters in axial section.

[0305] EX11. A cylinder according to any one of Examples EX7 to EX10, wherein the body has an internal area of ​​less than or equal to 80 square millimeters at an axial section.

[0306] EX12. A cylinder according to any one of Examples EX7 to EX11, wherein, in the axial section, the body has an internal area between 40 square millimeters and 80 square millimeters.

[0307] EX13. A cylinder according to Example EX12, wherein, in the axial section, the body has an internal area between 50 square millimeters and 70 square millimeters.

[0308] EX14. A cylinder according to any one of Examples EX7 to EX13, wherein the body has an outer perimeter of at least 30 mm in axial section.

[0309] EX15. A cylinder according to any one of Examples EX7 to EX14, wherein, in the axial section, the body has an outer perimeter of less than or equal to 40 mm.

[0310] EX16. A cylinder according to any one of Examples EX7 to EX15, wherein, in an axial section, the body has an outer circumference between 30 mm and 40 mm.

[0311] EX17. A cylinder according to any one of Examples EX7 to EX16, wherein the ratio of the outer perimeter to the inner area is at least 0.38.

[0312] EX18. The cylinder according to Example EX17, wherein the ratio of the outer perimeter to the inner area is at least 0.45.

[0313] EX19. A cylinder according to any of the examples EX7 to EX18, wherein the ratio of the outer perimeter to the inner area is less than or equal to 0.5.

[0314] EX20. A cylinder according to any of the examples EX7 to EX19, wherein the ratio of the outer perimeter to the inner area is between 0.38 and 0.5.

[0315] EX21. According to Example EX4, the cross-sectional area of ​​the heating element in the plane where the heating element extends is at least 60 square millimeters.

[0316] EX22. A cylinder according to Example EX4 or EX21, wherein the cross-sectional area of ​​the heating element in the plane where the heating element extends is less than or equal to 90 square millimeters.

[0317] EX23. A cylinder according to any one of Examples EX4, EX21 or EX22, wherein the cross-sectional area of ​​the heating element in the plane in which the heating element extends is between 60 square millimeters and 90 square millimeters.

[0318] EX24. According to Example EX23, the cross-sectional area of ​​the heating element in the plane where the heating element extends is between 70 square millimeters and 80 square millimeters.

[0319] EX25. A cylinder according to any one of Examples EX4 or EX21 to EX24, wherein the cross-sectional area of ​​the chamber in the plane in which the planar heating element extends is at least 150 square millimeters.

[0320] EX26. A cylinder according to any one of Examples EX4 or EX21 to EX25, wherein the cross-sectional area of ​​the chamber in the plane in which the planar heating element extends is less than or equal to 250 square millimeters.

[0321] EX27. A cylinder according to any one of Examples EX4 or EX21 to EX26, wherein the cross-sectional area of ​​the chamber in the plane in which the planar heating element extends is between 150 square millimeters and 250 square millimeters.

[0322] EX28. A cylinder according to any one of Examples EX4 or EX21 to EX27, wherein the cross-sectional area of ​​the chamber in the plane in which the planar heating element extends is between 160 square millimeters and 200 square millimeters.

[0323] EX29. A cylinder according to any one of Examples EX4 or EX21 to EX28, wherein the ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends is at least 0.3.

[0324] EX30. A cylinder according to any one of Examples EX4 or EX21 to EX29, wherein the ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends is less than or equal to 0.8.

[0325] EX31. A cylinder according to any one of Examples EX4 or EX21 to EX30, wherein the ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends is between 0.3 and 0.8.

[0326] EX32. According to Example EX31, the ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends is between 0.3 and 0.5.

[0327] EX33. A cylinder according to any one of Examples EX4 or EX21 to EX32, wherein the heating element is a planar heating element.

[0328] EX34. The cylinder according to Example EX33, wherein the planar heating element includes one or more planar heating surfaces for heating the aerosol generating matrix to form an aerosol.

[0329] EX35. According to the cylinder of Example EX33 or Example EX34, the planar heating element includes two planar heating surfaces for heating the aerosol generating matrix to form an aerosol.

[0330] EX36. According to the cylinder of Example EX34 or Example EX35, each of the one or more planar heating surfaces has a surface area of ​​at least 55 square millimeters.

[0331] EX37. A cylinder according to any one of Examples EX34 to EX36, wherein each of the one or more planar heating surfaces has a surface area of ​​less than or equal to 120 square millimeters.

[0332] EX38. A cylinder according to any one of Examples EX34 to EX37, wherein each of the one or more planar heating surfaces has a surface area between 55 square millimeters and 120 square millimeters.

[0333] EX39. A cylinder according to any one of Examples EX34 to EX38, wherein the surface area of ​​each of the one or more planar heating surfaces is at least 0.3 times the cross-sectional area of ​​the chamber in the plane in which the planar heating element extends.

[0334] EX40. A cylinder according to any one of Examples EX34 to EX39, wherein the surface area of ​​each of the one or more planar heating surfaces is less than or equal to 0.6 of the cross-sectional area of ​​the chamber in the plane in which the planar heating element extends.

[0335] EX41. A cylinder according to any one of Examples EX34 to EX40, wherein the surface area of ​​each of the one or more planar heating surfaces is in a ratio of the cross-sectional area of ​​the chamber in the plane in which the planar heating element extends to be between 0.3 and 0.6.

[0336] EX42 is a cylinder according to Example EX5, wherein the first part and the second part have a combined internal volume of at least 400 cubic millimeters.

[0337] EX43. A cylinder according to Example EX5 or Example EX42, wherein the first part and the second part have a combined internal volume of at least 500 cubic millimeters.

[0338] EX44. A cylinder according to any one of Examples EX5, EX42 or EX43, wherein the first portion and the second portion have a combined internal volume of less than or equal to 800 cubic millimeters.

[0339] EX45. A cylinder according to any one of Examples EX5 or EX42 to EX44, wherein the first portion and the second portion have a combined internal volume of less than or equal to 700 cubic millimeters.

[0340] EX46. A cylinder according to any one of Examples EX5 or EX42 to EX45, wherein the first portion and the second portion have a combined internal volume between 500 cubic millimeters and 700 cubic millimeters.

[0341] EX47. A cylinder according to any one of Examples EX5 or EX42 to EX46, wherein the aerosol generating matrix comprises a first aerosol generating matrix disposed in the first portion and a second aerosol generating matrix disposed in the second portion.

[0342] EX48. The cylinder according to any of the foregoing examples, wherein the housing has an external volume of at least 1300 cubic millimeters.

[0343] EX49. A cylinder according to any of the foregoing examples, wherein the housing has an external volume of less than or equal to 1500 cubic millimeters.

[0344] EX50. A cylinder according to any of the foregoing examples, wherein the housing has an external volume between 1300 cubic millimeters and 1500 cubic millimeters.

[0345] EX51. The cylinder according to Example EX5, wherein the internal volume of the first part is substantially the same as the internal volume of the second part.

[0346] EX52. According to Example EX5 or Example EX51, the first part is substantially the same as the second part of the chamber in at least one of the following aspects: shape, size, thickness, width, length, orientation.

[0347] EX53. The cylinder according to any of the foregoing examples, wherein the housing is a rigid housing.

[0348] EX54. A cylinder according to Example EX7, wherein the body has an external length between 16 mm and 18 mm.

[0349] EX55. A cylinder according to Example EX7 or Example EX54, wherein the body has an external width between 11.5 mm and 13 mm.

[0350] EX56. A cylinder according to any one of Examples EX7, EX54 or EX55, wherein the body has an external depth between 5 mm and 6.5 mm.

[0351] EX57. The tube according to any of the foregoing examples, wherein the inlet includes a plurality of inlet orifices.

[0352] EX58. The cylinder according to any of the foregoing examples, wherein the outlet includes a plurality of outlet orifices.

[0353] EX59. A cylinder according to any of the foregoing examples, including an airflow path extending between the inlet and the outlet.

[0354] EX60. A cylinder according to Example EX3 or Example EX4, wherein the heating element includes an intermediate section extending between the downstream end section and the upstream end section.

[0355] EX61. A cylinder according to Example EX60, wherein the intermediate section has: a serpentine shape; a coiled shape; a spiral shape; or a flower-like shape.

[0356] EX62. According to the cylinder of Example EX60 or Example EX61, the intermediate section includes multiple segments.

[0357] EX63. A cylinder according to Example EX62, wherein the plurality of segments are parallel to each other.

[0358] EX64. A cylinder according to Example EX63, wherein a plurality of segments extend along the longitudinal axis of the cylinder.

[0359] EX65. A cylinder according to any of the foregoing examples, wherein the cylinder comprises one or more solid aerosol generating matrices.

[0360] EX66. A cylinder according to Example EX65, wherein one or more solid aerosol generating matrices are disposed in a chamber defined between the inlet and the outlet, and wherein the density of the aerosol generating matrices in the chamber is at least 0.1 mg / mm³.

[0361] EX67. The cylinder according to Example EX66, wherein the density of the aerosol generating matrix in the chamber is at least 0.3 mg / mm³.

[0362] EX68. A cylinder according to Example EX66 or EX67, wherein the density of the aerosol generating matrix in the chamber is less than 2 mg / mm³.

[0363] EX69. A cylinder according to EX66 or EX67, wherein the density of the aerosol generating matrix in the chamber is less than 1 mg / mm³.

[0364] EX70. A cylinder according to any of the foregoing examples, wherein the cylinder includes a planar heating element comprising one or more planar heating surfaces, and wherein the aerosol generating matrix is ​​configured to be in direct contact with the one or more planar heating surfaces on a total surface area corresponding to at least 35% of the total cross-sectional area of ​​the chamber in the plane in which the planar heating element extends.

[0365] EX71. A cylinder according to an example, wherein the aerosol generating matrix is ​​in direct contact with the planar heating surface over a total area of ​​at least 40 square millimeters.

[0366] EX72. The cylinder according to any of the foregoing examples EX71, wherein the aerosol generating matrix is ​​in direct contact with the planar heating surface over a total area of ​​up to 120 square millimeters.

[0367] EX73. A cylinder according to any of the foregoing examples, wherein the aerosol generating matrix is ​​disposed in a chamber defined between the inlet and the outlet, and wherein the aerosol generating matrix fills the chamber by at least 50%.

[0368] EX74. The tube according to any of the foregoing examples, wherein the aerosol generating matrix comprises an aerosol forming agent.

[0369] EX75. According to the cylinder of Example EX74, the aerosol generating matrix contains at least 5% by weight of an aerosol forming agent on a dry weight basis.

[0370] EX76. According to the cylinder of Example EX75, the aerosol generating matrix contains up to 30% by weight of aerosol forming agent on a dry weight basis.

[0371] EX77. According to Example EX74, the aerosol generating matrix contains at least 40% by weight of an aerosol forming agent on a dry weight basis.

[0372] EX78. According to the cylinder of Example EX77, the aerosol generating matrix contains up to 80% by weight of an aerosol forming agent on a dry weight basis.

[0373] EX79. The tube according to any of the foregoing examples, wherein the aerosol generating matrix contains exogenous nicotine.

[0374] EX80. A cylinder according to any of the foregoing examples, wherein the aerosol generating matrix comprises tobacco.

[0375] EX81. A cylinder according to any one of Examples EX1 to EX79, wherein the aerosol generating matrix is ​​substantially free of tobacco.

[0376] EX82. The tube according to any of the foregoing examples, wherein the aerosol generating matrix contains at least 0.5% by weight of nicotine on a dry weight basis.

[0377] EX83. The tube according to any of the foregoing examples, wherein the aerosol generating matrix contains up to 10% by weight of nicotine on a dry weight basis.

[0378] EX84. According to any of the foregoing examples, the aerosol generating matrix is ​​in the form of one or more sheets of a solid aerosol generating matrix.

[0379] EX85. A cylinder according to Example EX84, wherein the aerosol generating matrix is ​​disposed in a chamber defined between the inlet and the outlet, and wherein the density of the aerosol generating matrix is ​​between 0.3 mg / mm³ in the chamber and 2 mg / mm³ in the chamber.

[0380] EX86. A cylinder according to examples EX84 or EX85, wherein each of the one or more sheets has an average thickness of less than 500 micrometers.

[0381] EX87. A tube according to examples EX84 or EX85, wherein each of the one or more sheets has an average thickness of at least 1 mm.

[0382] EX88. A cylinder according to any one of Examples EX84 to EX87, wherein one or more sheets of aerosol are aggregated to form a matrix.

[0383] EX89. A tube according to any one of Examples EX84 to EX88, wherein the one or more sheets of the aerosol generating matrix are rolled up.

[0384] EX90. A cylinder according to any one of Examples EX84 to EX89, wherein the aerosol generating matrix is ​​disposed in a chamber defined between the inlet and the outlet, and wherein the chamber of the cylinder contains at least 250 milligrams of the solid aerosol generating matrix in one or more sheets.

[0385] EX91. A tube according to any one of Examples EX84 to EX90, wherein the one or more sheets of aerosol-generating matrix comprise one or more sheets of homogenized plant material.

[0386] EX92. A tube according to any one of Examples EX84 to EX91, wherein the one or more sheets of the aerosol generating matrix comprise one or more sheets of homogenized tobacco material.

[0387] EX93. A tube according to any one of Examples EX84 to EX92, wherein the one or more sheets of the aerosol generating matrix comprise one or more sheets of an aerosol generating membrane containing a cellulose-based film-forming agent, nicotine and an aerosol forming agent.

[0388] EX94. A tube according to any one of Examples EX84 to EX93, wherein the one or more sheets of the aerosol generating matrix comprise one or more sheets containing a gel composition, said gel composition comprising nicotine, at least one gelling agent and an aerosol forming agent.

[0389] EX95. A cylinder according to any one of Examples EX1 to EX83, wherein the aerosol generating matrix is ​​disposed in a chamber defined between the inlet and the outlet, and wherein the aerosol generating matrix is ​​in the form of shredded aerosol generating matrix.

[0390] EX96. The cylinder according to Example EX95, wherein the density of the shredded aerosol generating matrix is ​​between 0.1 mg / mm³ in the chamber and 1 mg / mm³ in the chamber.

[0391] EX97. A cylinder according to any one of Examples EX95 to EX96, wherein the chamber of the cylinder contains at least 100 milligrams of the shredded aerosol generating matrix.

[0392] EX98. A cylinder according to any one of Examples EX95 to EX97, wherein the shredded aerosol generating matrix has a cut width of at least 0.3 mm.

[0393] EX99. A cylinder according to any one of Examples EX95 to EX98, wherein the shredded aerosol generating matrix has a cut width of less than 2 mm.

[0394] EX100. A cylinder according to any one of Examples EX95 to EX99, wherein the shredded aerosol generating matrix comprises shredded filler.

[0395] EX101. A cylinder according to any one of Examples EX95 to EX100, wherein the shredded aerosol generating matrix comprises homogenized plant material.

[0396] EX102. A cylinder according to any one of Examples EX95 to EX101, wherein the shredded aerosol generating matrix comprises an aerosol generating membrane containing a cellulose-based film-forming agent, nicotine and an aerosol forming agent.

[0397] EX103. A cylinder according to any one of Examples EX95 to EX102, wherein the shredded aerosol generating matrix comprises a gel composition comprising nicotine, at least one gelling agent and an aerosol forming agent.

[0398] EX104. A cylinder according to any one of Examples EX1 to EX83, wherein the aerosol generating matrix comprises a plurality of particles.

[0399] EX105. The tube according to Example EX104, wherein the aerosol generating matrix comprises at least one of tobacco or nicotine.

[0400] EX106. A cylinder according to Example EX104, wherein the aerosol generating matrix is ​​disposed in a chamber defined between the inlet and the outlet, and wherein the density of the aerosol generating matrix is ​​between 0.3 mg / mm³ in the chamber and 2 mg / mm³ in the chamber.

[0401] EX107. A cylinder according to any one of Examples EX104 to EX106, wherein the plurality of particles are disposed within a permeable bag.

[0402] EX108. A tube according to Example EX107, wherein the bag has an external volume of at least 180 cubic millimeters.

[0403] EX109. A cartridge according to any one of Examples EX104 to EX106, wherein the plurality of granules are compressed into one or more tablets.

[0404] EX110. A cylinder according to any one of Examples EX104 to EX106, wherein the plurality of particles are in the form of loose particles.

[0405] EX111. A cylinder according to any one of Examples EX104 to EX110, wherein the aerosol generating matrix is ​​in the form of a powder.

[0406] EX112. A cartridge according to Example EX111, wherein the powder has a D50 size between 50 micrometers and 80 micrometers.

[0407] EX113. A cartridge according to examples EX111 or EX112, wherein the powder has a D95 size between 80 micrometers and 130 micrometers.

[0408] EX114. A cylinder according to any one of Examples EX104 to EX113, wherein the aerosol generating matrix is ​​in the form of ground tobacco.

[0409] EX115. A tube according to any one of Examples EX104 to EX113, wherein the aerosol generating matrix comprises a plurality of particles containing a gel composition, the gel composition comprising nicotine, at least one gelling agent and an aerosol forming agent.

[0410] As used herein, the terms "proximal" and "distal" are used to describe the relative positions of components or component portions of the aerosol generating cylinder according to the invention. The system and cylinder include a proximal end through which, in use, the aerosol exits the cylinder or system. The cylinder includes a distal end opposite the proximal end. The proximal end of the cylinder may also be referred to as the inlet end or downstream end. The distal end of the cylinder may also be referred to as the upstream end.

[0411] The examples will now be described further with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of a cylinder according to an example of this disclosure; Figure 2 There is no aerosol-generating matrix. Figure 1 A cross-sectional view of the cylinder; Figure 3 It has an aerosol-generating matrix. Figure 1 A cross-sectional view of the cylinder; Figure 4 yes Figure 1 The cylinder is perpendicular to Figure 2 and Figure 3 The cross-sectional view in the section view; and Figure 5 This is a cross-sectional view of a system based on an example of this disclosure.

[0412] The above and other features and advantages of the exemplary embodiments will become more apparent from the detailed description of the exemplary embodiments with reference to the accompanying drawings. However, the specific structural and functional details disclosed herein are representative only for the purposes of describing the exemplary embodiments. Furthermore, the exemplary embodiments may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0413] Therefore, although the exemplary embodiments are capable of various modifications and have alternative forms, embodiments thereof are illustrated by way of example in the accompanying drawings and will be described in detail herein. However, it should be understood that the exemplary embodiments are not intended to be limited to the specific forms disclosed; on the contrary, the exemplary embodiments will cover all modifications, equivalents, and alternatives falling within the scope of the exemplary embodiments.

[0414] For ease of description, spatially relative terms (e.g., “below”) are used herein to describe the relationship between one element or feature and another element or feature as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device during use or operation, other than those depicted in the figures. For example, if the device in the figures is flipped, an element described as “below” other elements or features would be oriented “above” other elements or features. Therefore, the term “below” can include both “above” and “below” orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein are to be interpreted accordingly.

[0415] The terminology used herein is for the purpose of describing various embodiments only and is not intended to limit the exemplary embodiments. As used herein, unless the context clearly indicates otherwise, the singular forms “a”, “an”, and “described” are intended to include the plural forms as well. It will be further understood that the terms “includes,” “including,” “comprises,” and “comprising”, when used in this specification, specify the presence of the stated features, integrals, steps, operations, or elements, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, or groups thereof.

[0416] Exemplary embodiments are described herein with reference to perspective and cross-sectional views, which are schematic diagrams of idealized embodiments (and intermediate structures) of the exemplary embodiments. Therefore, variations in the shapes illustrated are expected, for example, due to manufacturing techniques or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the areas shown herein, but should include, for example, deviations in shape caused by manufacturing processes. In all figures, the same reference numerals denote the same elements. The figures should not be considered to be drawn to scale unless explicitly stated otherwise. It should be understood that the figures in this application are schematic, and some features have been omitted for clarity.

[0417] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the exemplary embodiments pertain. It will be further understood that terms, including those defined in commonly used dictionaries, shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field, and shall not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0418] The accompanying drawings are intended to depict exemplary embodiments and should not be construed as limiting the intended scope of the claims.

[0419] refer to Figure 1 A schematic diagram of a cylinder 10 according to an embodiment of the present disclosure is shown. The cylinder 10 is configured for use with an aerosol generating apparatus 600. Figure 2 and Figure 3 As best seen, the cylinder 10 includes: a housing 100; a planar heating element 200; and an aerosol generating matrix 300.

[0420] The housing 100 of the cylinder 10 is configured to protect, contain, or support the components of the cylinder 10. The housing 100 is constructed to contain the aerosol generating matrix 300. The housing 100 is configured to hold the aerosol generating matrix 300 in the chamber 400 in contact with or near the heating element 200. The housing 100 is a rigid housing. The housing 100 has an internal volume between 1300 cubic millimeters and 1500 cubic millimeters.

[0421] Housing 100 has an inlet 110, an outlet 120, and a chamber 400. Housing 100 has a distal end 101 and a proximal end 102. Housing 100 includes an airflow path extending between the inlet 110 and the outlet 120. Housing 100 defines the inlet 110 and the outlet 120. Housing 100 is configured such that, in use, air can flow from the inlet 110 through the chamber 400, toward the outlet 120, and out through the outlet.

[0422] Inlet 110 is an air inlet. Inlet 110 is located at the distal end 101. Figure 4 As best viewed from the center, inlet 110 includes a plurality of inlet openings 111. The inlet openings 111 are equidistant from each other. The inlet openings 111 have substantially the same shape, size and orientation as each other.

[0423] Outlet 120 is an aerosol outlet. Outlet 120 is located at the proximal end 102. Outlet 120 includes a plurality of outlet orifices 121. The outlet orifices 121 are equidistant from each other. The outlet orifices 121 have substantially the same shape, size and orientation as each other.

[0424] The housing 100 has an upstream portion 130. The housing 100 has a downstream portion 140. The housing 100 has a main body 150.

[0425] The upstream portion 130 is located at the upstream end 101 of the cylinder 10. The upstream portion 130 is fixed to the body 150. The upstream portion 130 is fixed to the body 150 by an interference fit. The upstream portion 130 includes an inlet 110. The inlet 110 is within the body 150. The upstream portion 130 is an upstream end cap. The upstream portion 130 extends into the body 150. The upstream portion 130 has a length between 3 mm and 4.5 mm (i.e., dimensions in the third direction 3). The upstream portion 130 may contain a transparent or translucent material. The upstream portion 130 may contain plastic, such as a high-temperature plastic.

[0426] The upstream portion 130 has an upstream portion base 135 and an upstream portion insert 136. The upstream portion base 135 is substantially outside the body 150. The upstream portion base 135 has the same depth as the body 150. The upstream portion base 135 has the same width as the body 150.

[0427] An upstream insert 136 is attached to an upstream base 135. The upstream insert 136 and the upstream base 135 are formed as a single unit. The upstream insert 136 extends from the upstream base 135 into the body 150. The upstream insert 136 is substantially within the body 150. The upstream insert 136 defines an inlet 110. The upstream insert 136 has an outer wall substantially aligned with the inner wall of the body 150. The upstream insert 136 is positioned such that the upstream base 135 abuts against the end of the body 150. The upstream insert 136 is secured to the body 150 by an interference fit.

[0428] The downstream portion 140 is located at the downstream end 102 of the cylinder 10. The downstream portion 140 is fixed to the body 150. The downstream portion 140 is fixed to the body 150 by an interference fit. The downstream portion 140 includes an outlet 120. The downstream portion 140 is a downstream end cap. The downstream portion 140 extends into the body 150. The downstream portion 140 is located downstream of the upstream portion 130. The downstream portion 140 has a length between 2.5 mm and 4 mm. The downstream portion 140 may contain a transparent or translucent material. The downstream portion 140 may contain plastic, such as a high-temperature plastic.

[0429] The downstream portion 140 includes a downstream portion base 145 and a downstream portion insert 146. The downstream portion base 145 defines an outlet 120. The outlet 120 is aligned with the downstream end of the body 150. The downstream portion base 145 is planar. The downstream portion base 145 is substantially outside the body 150. The downstream portion base 145 has the same depth as the body 150. The downstream portion base 145 has the same width as the body 150.

[0430] The downstream insert 146 is attached to the downstream base 145. The downstream insert 146 and the downstream base 145 are formed as a single unit. The downstream insert 146 extends from the downstream base 145 into the body 150. The downstream insert 146 is substantially hollow. The downstream insert 146 is tubular. The downstream insert 146 is substantially within the body 150. The downstream insert 146 has an outer wall substantially aligned with the inner wall of the body 150. The downstream insert 146 is positioned such that the downstream base 145 abuts against the end of the body 150.

[0431] Chamber 400 extends between inlet 110 and outlet 120. Chamber 400 includes a downstream cavity 440 defined by a downstream portion 140. The downstream cavity 440 is entirely within the downstream portion insert 146. The downstream cavity 440 has an internal volume between 70 cubic millimeters and 90 cubic millimeters. Heating element 200 extends only partially through the downstream cavity 440. The downstream cavity 440 includes a first portion 441 on a first side of the plane defined by the planar heating element 200 and a second portion 442 on a second side of the plane defined by the planar heating element 200. Given that heating element 200 extends only partially through the downstream cavity 440, the first portion 441 is only partially separated from the second portion 442 by heating element 200. The first portion 441 and the second portion 442 of the downstream cavity 440 have a combined internal volume between 70 cubic millimeters and 90 cubic millimeters.

[0432] A body 150 extends between an upstream portion 130 and a downstream portion 140. The body 150 defines a chamber 400 between the downstream portion 140 and the upstream portion 130. The body 150 has an external length between 16 mm and 18 mm. The body 150 has an external width between 11.5 mm and 13 mm. The body 150 has an external depth between 5 mm and 6.5 mm. The body 150 has a surface area between 540 square millimeters and 565 square millimeters. The body 150 has a wall with a wall thickness of 0.5 mm. The body 150 has a substantially constant wall thickness along its length. The body 150 has a substantially constant wall thickness along its width. The body 150 has a substantially constant wall thickness along its depth. The body 150 is substantially tubular. The body 150 has a substantially rectangular longitudinal section.

[0433] The body 150 may include at least one of the following: metal; alloy; plastic; high-temperature plastic; plant material.

[0434] Chamber 400 is configured to store aerosol generation matrix 300. Chamber 400 is located between inlet 110 and outlet 120. Chamber 400 is defined by housing 100. The only openings to chamber 400 are inlet 110 and outlet 120.

[0435] Chamber 400 includes a first portion 410 and a second portion 420. The first portion 410 is on a first side of the heating element 200, and the second portion 420 is on a second side of the heating element 200. The first portion 410 and the second portion 420 have a combined internal volume of at least 500 cubic millimeters. The internal volume of the first portion 410 is substantially the same as that of the second portion 420. The first portion 410 is substantially the same as the second portion 420 in at least one of the following aspects: shape; size; depth; width; length; orientation. The first portion 410 and the second portion 420 are configured such that, in use, air can flow in parallel from the inlet 110 through the aerosol generating matrices 310, 320 in the two portions 410, 420 of the chamber, flow toward the outlet 120, and exit through the outlet. Specifically, the airflow can diverge after entering the inlet 110, such that it can pass through both the first portion 410 and the second portion 420, and then converge to pass through the outlet 120.

[0436] A planar heating element 200 is configured to heat an aerosol-forming matrix to form an aerosol. The heating element 200 is a resistance heating element configured to generate heat when a voltage is applied across the heating element 200. The heating element 200 extends into a chamber 400. The heating element 200 extends from an upstream end toward a downstream end into the chamber 400 to divide the chamber 400 into a first portion 410 and a second portion 420. The heating element 200 is arranged such that the first aerosol-forming matrix 310 and the second aerosol-forming matrix 320 are substantially separated from each other.

[0437] Heating element 200 is fixedly attached to housing 100. Heating element 200 is fixedly attached to the distal end 101 of housing 100. Heating element 200 is fixedly attached to upstream portion 130. Heating element 200 extends from upstream portion 130 toward downstream portion 140 through chamber 400. Heating element 200 extends from the distal end 101 of housing 100. Heating element 200 is embedded within a first upstream section 131 and a second upstream section 132 of housing 100. The first upstream section 131 and the second upstream section 132 extend from upstream portion 130 to clamp or secure heating element 200 to upstream portion 130. Heating element 200 extends through aerosol generating matrix 300. Heating element 200 is in contact with aerosol generating matrix 300.

[0438] The heating element 200 has a serpentine shape. The heating element 200 includes a plurality of parallel segments extending along the chamber 400. The heating element 200 is a self-supporting track extending through the chamber 400. The heating element 200 is substantially or entirely planar. The heating element 200 extends across at least 20%, preferably at least 40%, of the length of the chamber 400. The planar heating element 200 is oriented such that the plane of the heating element 200 is aligned with the width of the cylinder. The planar heating element 200 is oriented such that the plane of the heating element 200 is parallel to the cylinder width direction 1.

[0439] The heating element 200 includes a first electrical connection portion 211 and a second electrical connection portion 212. Electrical connection portions 211 and 212 are connected to the upstream portion 130. Electrical connection portions 211 and 212 are configured for electrical connection to a power source. Electrical connection portions 211 and 212 are spaced apart from each other. Electrical connection portions 211 and 212 are spaced apart from each other in the width direction of the cylinder 10. Electrical connection portions 211 and 212 are on opposite sides of the chamber 400. Electrical connection portions 211 and 212 face opposite sides of the upstream portion 130. Both electrical connection portions 211 and 212 are fixedly attached to the first upstream section 131 and the second upstream section 132.

[0440] The heating element 200 includes a serpentine portion 213. The serpentine portion 213 electrically connects a first electrical connection portion 211 to a second electrical connection portion 212. The serpentine portion 213 is shaped such that its length near the central longitudinal axis of the cylinder 10 is greater than its length near either the first electrical connection portion 211 or the second electrical connection portion 212. The serpentine portion 213 is planar. It has a series of flat track portions that together define a plane.

[0441] The heating element 200 comprises at least one of the following: an iron-based alloy; a nickel alloy; or ceramic.

[0442] like Figure 5As seen, each electrical connection portion 211, 212 of the heating element 200 is electrically connected to the barrel electrical contacts 221, 222. The barrel electrical contacts 211, 212 are located at the downstream end 101 of the barrel 10 on the surface of the housing 100.

[0443] like Figure 3 As shown, the aerosol generating matrix 300 includes a first aerosol generating matrix 310 and a second aerosol generating matrix 320. The aerosol generating matrix 300 is disposed within a first portion 410 and a second portion 420 of the chamber. The first aerosol generating matrix 310 is disposed within the first portion 410 of the chamber 400. The second aerosol generating matrix 320 is disposed within the second portion 420 of the chamber 400.

[0444] The aerosol generating matrix 300 can be one or more sheets of a solid aerosol generating matrix. The solid aerosol generating matrix 300 may contain at least one of tobacco and nicotine, and at least one aerosol forming agent. The density of the solid aerosol generating matrix 300 in a chamber may be at least 0.3 mg / mm³. The density of the solid aerosol generating matrix 300 in a cylinder chamber may be at least 0.5 mg / mm³.

[0445] The aerosol generating matrix 300 may be a shredded aerosol generating matrix. The shredded aerosol generating matrix 300 may contain at least one of tobacco and nicotine, as well as an aerosol forming agent. The density of the shredded aerosol generating matrix 300 in the chamber may be at least 0.1 mg / mm³. The cut width of the shredded aerosol generating matrix may be at least 0.3 mm. The shredded aerosol generating matrix may contain shredded filler. The aerosol generating matrix may contain homogenized tobacco material.

[0446] The aerosol generating matrix 300 can be a solid aerosol generating matrix. The solid aerosol generating matrix 300 may contain at least one of tobacco and nicotine, as well as multiple particles. The density of the solid aerosol generating matrix 300 in the chamber may be at least 0.3 mg / mm³. The solid aerosol generating matrix may be in powder form, said powder comprising particles having a D50 size between 50 μm and 80 μm.

[0447] like Figure 1 As best viewed from the center, the housing has an external width 181 in the first direction 1. The housing has an external depth 182 in the second direction 2. The housing has an external length 183 in the third direction 3. The third direction 3 is the direction from the distal end 101 to the proximal end 102. The first direction 1, the second direction 2, and the third direction 3 are perpendicular to each other. The external length 183 of the housing is greater than the external width 181 of the housing. The external width 181 of the housing is greater than the external depth 182 of the housing.

[0448] The housing has an internal width of 171 in a first direction 1. The housing has an internal depth of 172 in a second direction 2. The housing has an internal length of 173 in a third direction 3. The internal length of the housing body 173 is greater than the internal width of the housing 171. The internal width of the housing 171 is greater than the internal depth of the housing 172.

[0449] In a simple cylinder 10 that defines a rectangular internal chamber 400, the combined internal volume of the first portion 410 and the second portion 420 of the chamber 400 is given by the following formula: V T express: Among them W I The internal width of the shell is 171; D I The internal depth of the shell is 172 L. I The internal length of the shell body is 173; and V H This volume (W) I x D I x L I The space occupied by the heating element 200 within the ).

[0450] exist Figure 2 In the cylinder shown, chamber 400 is not rectangular because a portion of the main body 150 is occupied by the upstream portion 130 and the downstream portion 140 of the shell. In this case, the combined internal volume of the first portion 410 and the second portion 420 is given by V in the following formula. T express: Among them W I The internal width of the main body of the shell is 171; D I The internal depth of the shell body is 172 L. I The internal length of the main body of the shell is 173; V U Is this volume (W) I x D I x L I The space occupied by the upstream portion 130 within ); V IL Is this volume (W) I x D I x L I The space within ( ) occupied by entrance 110; V D Is this volume (W) I x D I x L I The space occupied by the downstream portion 140 within ) and V H Is this volume (W) I x D I x L I The space occupied by the heating element 200 within the ).

[0451] Combined internal volume V T The space within the cylinder 10 is configured to receive the aerosol generating matrix 300. The combined internal volume of the chamber 400 can be partially or completely filled with the aerosol generating matrix 300. The combined internal volume of the chamber 400 can be completely or partially divided into two sections by the heating element 200.

[0452] The body 150 has the following dimensions in axial section: an internal area between 10 and 300 square millimeters; and an external perimeter of at least 30 millimeters. The ratio between the external perimeter and the internal area is at least 0.5.

[0453] For a cylinder 10 with a rectangular cross-section as depicted in the figure, the internal area at the axial section is represented by A in the following formula: Among them W I The internal width of the shell at the cross-section is 171; and D I The depth of the shell at the cross-section is 172.

[0454] For a cylinder 10 with a rectangular cross-section as depicted in the figure, the outer perimeter at the axial section is represented by P in the following formula: Where D E The outer depth of the shell at the cross-section is 182; and W E The outer width of the shell at the cross-section is 181.

[0455] The cylinder 10 depicted in the figure has a substantially constant cross-section along its length 183. For the cylinder depicted in the figure, the values ​​A and P are constant along most of the outer length 183 of the cylinder between the upstream portion 130 and the downstream portion 140. Specifically, the values ​​A and P will be the same regardless of whether the cross-section is obtained at a plane closer to the upstream end 101 or closer to the downstream end 102 of the cylinder 10.

[0456] The cross-sectional area of ​​the heating element in the plane where the heating element extends is between 60 square millimeters and 90 square millimeters.

[0457] The cross-sectional area of ​​chamber 400 in the plane where the planar heating element 200 extends is between 150 square millimeters and 250 square millimeters.

[0458] The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber 400 in the plane where the heating element extends is at least 0.3.

[0459] The cross-sectional area of ​​chamber 400 in the plane where the planar heating element 200 extends is approximately equal to the internal length of the housing multiplied by the internal width 171 of the housing. The internal length of the housing is the internal length 173 of the main housing body minus the length of any upstream or downstream portions extending into the housing body 150 to occupy space in the plane of the heating element 200. (Reference) Figure 2 The upstream portion 130 occupies more space in the plane of the heating element 200 within the housing body 150 than the downstream portion 140.

[0460] refer to Figure 4 The cross-sectional area of ​​chamber 400 in the plane where the planar heating element 200 extends can be expressed as A in the following formula. x : Among them W I The internal width of the housing at the cross-section of the plane where the planar heating element extends is 171; L I The internal length of the housing body at the cross-section of the plane where the planar heating element extends is 173; A D It is the area W I x L I The area occupied by the downstream portion 140 within; A U It is the area W I x L I The area within which is occupied by the upstream portion 130.

[0461] Device 600 includes a main body 610, a device cavity, and a cover 611. For example... Figure 5 As shown, the cylinder 10 is configured to be received within the device cavity of the body 610 and the cover 611 of the device 600. The cover 611 is configured to move between an open position and a closed position. When the cover 611 is in the open position, the cylinder 10 can be inserted into or removed from the device cavity. When the cover 611 is in the closed position, the cylinder 10 is fixed within the device 600. When the cover 611 is in the closed position, the cylinder 10 is received within the cover 611 and the body 610 of the device 600 and is surrounded by the cover and body of the device.

[0462] Device 600 includes an inlet 608, an outlet 609, a power supply 630, a controller 640, electrical contacts 621 and 622, and a mouthpiece 612. Body 610 includes an inlet 608, a power supply 630, a controller 640, and electrical contacts 621 and 622. Cover 611 includes a mouthpiece 612 and an outlet 609.

[0463] Inlet 608 is located within the main body 610 of the device. Inlet 608 is located at the distal end of the device 600. Inlet 608 is an air inlet. Outlet 609 is located within the nozzle 612. Outlet 609 is located at the proximal end of the device 600. Outlet 609 is an aerosol outlet.

[0464] The housing 100 of the cylinder 10 is configured for attachment to the device 600 at its distal end 101. The cylinder 10 and the device 600 are configured such that when the device 600 and the cylinder 10 are mechanically connected, the electrical contacts 221, 222 of the cylinder are electrically connected to corresponding electrical contacts 621, 622 of the device 600. The electrical contacts 621, 622 of the device 600 are electrically connected to a power source 630, allowing power to be supplied from the power source 630 to the heating element 200. The power source 630 is in the form of a battery, in this example, a rechargeable lithium-ion battery.

[0465] The device 600 includes a controller 640 electrically connected to a power supply 630. The controller 640 is configured to control the power output from the power supply 630 to control whether the heating element 200 is turned on or off and to control the temperature of the heating element 200.

[0466] In use, air enters through air inlet 608, passes through device body 610, and enters air inlet 110 of cylinder 10. Aerosol is formed by the aerosol generation matrix 310, 320 surrounding heating element 200. The aerosol is then transported in the airflow to outlet 120 of cylinder 100, and subsequently to aerosol outlet 609 of mouthpiece. The user can inhale through mouthpiece 612 to receive the aerosol from aerosol outlet 609.

[0467] For the purposes of this specification and the appended claims, unless otherwise indicated, all figures representing quantities, quantities, percentages, etc., shall be understood to be modified by the term "about" in all cases. Furthermore, all ranges include the disclosed maximum and minimum points, and include any intermediate ranges that may be specifically listed or not listed herein. Thus, in this document, the number A is understood to be A ± 10% of A. In this document, the number A may be considered to include a value within the general standard error of the measurement of the property modified by the number A. In certain instances used in the appended claims, the number A may deviate from the percentages listed above, provided that the amount of deviation from A does not materially affect the essential and novel features of the claimed invention. Moreover, all ranges include the disclosed maximum and minimum points, and include any intermediate ranges that may be specifically listed or not listed herein.

Claims

1. A cylinder for an aerosol generating apparatus, the cylinder comprising: A housing having an inlet and an outlet, and a chamber extending between the inlet and the outlet; A heating element for heating an aerosol-forming matrix to form an aerosol, the heating element extending into the chamber; The chamber includes a first portion on a first side of the heating element and a second portion on a second side of the heating element; as well as An aerosol-generating matrix disposed in at least one of the first part and the second part. The cross-sectional area of ​​the heating element in the plane in which the heating element extends is between 60 square millimeters and 90 square millimeters. The cross-sectional area of ​​the chamber in the plane where the heating element extends is between 150 square millimeters and 250 square millimeters. The ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends is at least 0.

3.

2. The cylinder according to claim 1, wherein the cross-sectional area of ​​the heating element in the plane in which the heating element extends is between 70 square millimeters and 80 square millimeters.

3. The cylinder according to claim 1 or claim 2, wherein the cross-sectional area of ​​the chamber in the plane in which the heating element extends is between 160 square millimeters and 200 square millimeters.

4. The cylinder according to any of the preceding claims, wherein the ratio of the cross-sectional area of ​​the heating element in the plane where the heating element extends to the cross-sectional area of ​​the chamber in the plane where the heating element extends is between 0.3 and 0.

8.

5. The cylinder according to any of the preceding claims, wherein the heating element is a planar heating element.

6. The cylinder of claim 5, wherein the planar heating element comprises one or more planar heating surfaces for heating the aerosol generating matrix to form an aerosol.

7. The cylinder of claim 6, wherein the planar heating element comprises two planar heating surfaces for heating the aerosol generating matrix to form an aerosol.

8. The cylinder according to claim 6 or claim 7, wherein each of the one or more planar heating surfaces has a surface area between 55 square millimeters and 120 square millimeters.

9. The cylinder according to claim 7 or claim 8, wherein the surface area of ​​each of the one or more planar heating surfaces is at least 0.3 times the cross-sectional area of ​​the chamber in the plane in which the planar heating element extends.

10. The cylinder of claim 9, wherein the ratio of the surface area of ​​each of the one or more planar heating surfaces to the cross-sectional area of ​​the chamber in the plane in which the planar heating element extends is between 0.3 and 0.

6.

11. The cylinder according to any of the preceding claims, wherein the housing comprises a body extending between an upstream portion and a downstream portion, wherein the upstream portion includes the inlet, and wherein the downstream portion includes the outlet.

12. The cylinder according to any of the preceding claims, wherein the shell is a rigid shell.

13. The tube according to any of the preceding claims, wherein the aerosol generating matrix is ​​a solid aerosol generating matrix.

14. The cylinder according to any of the preceding claims, wherein the first portion and the second portion have a combined internal volume of at least 500 cubic millimeters.

15. The cylinder according to any of the preceding claims, wherein the first portion of the chamber has an internal volume substantially the same as the internal volume of the second portion.

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