Abstract: An aerosol-generating device is provided, including a housing having a chamber; an induction coil disposed around at least a portion of the chamber; a heating compartment configured to receive an aerosol-generating article and being detachably insertable into the chamber of the housing, the heating compartment including a cavity configured to receive at least a portion of the aerosol-generating article; and a heating element arrangeable within the cavity of the heating compartment, the heating element extending into the cavity in a longitudinal direction of the cavity, and being configured to penetrate an aerosol-forming substrate in the aerosol-generating article and received in the cavity.

Abstract: An aerosol-generating device is provided, including an induction heater configured to heat an aerosol-forming substrate, the heater including an induction coil and a heating element, the heating element being arrangeable within the induction coil; and a housing including first and second housing portions, the first housing portion including a power supply configured to supply power to the induction coil and a controller configured to control the supply of power to the induction coil, and the second housing portion includes the induction coil, and is configured to receive a consumable containing the aerosol-forming substrate, the first and the second housing portions are movable between a first operable position and a second position in which the first and the second housing portions are displaced and the heating element is accessible, and the heating element is configured to be replaced when the first and the second housing portions are in the second position.

Abstract: An electrically conductive flat filament arrangement for a fluid permeable heater assembly for aerosol-generating systems includes a center portion and two side portions. The two side portions are on opposite sides of the center portion. The center portion defines a heating region of the filament arrangement and the side portions define electrical contact regions of the filament arrangement. The center portion and the two side portions each include a plurality of openings. Each plurality of openings defines an open area of the center portion and an open area of each of the two side portions. A percentage of the total area of the center portion including the open area of the center portion is greater than the percentage of the total area of one of the side portions including the open area of the side portion.

Abstract: An aerosol-generating device is provided, including: an induction heater configured to heat an aerosol-forming substrate and including an induction coil and a heating element, the heating element being arrangeable within the induction coil, the induction coil including a first side opening along a longitudinal length of the induction coil, and the first side opening being configured to enable access to the heating element; and a housing, the induction coil being arranged within the housing, and the housing including a second side opening, which corresponds to the first side opening of the induction coil within the housing. A method for manufacturing the aerosol-generating device is also provided.

Abstract: An aerosol-generating device is provided, including a housing having a chamber configured to receive at least a portion of an aerosol-forming article; a first coil disposed at least partially around, or adjacent to, the chamber; and a second coil disposed at least partially around, or adjacent to, the chamber, the first coil being part of a first resonant circuit having a first resonant frequency and the second coil forming part of a second resonant circuit having a second resonant frequency.

Abstract: An aerosol-generating device is provided, including a housing having a chamber configured to receive at least a portion of an aerosol-forming article; a first coil disposed at least partially around, or adjacent to, the chamber; and a second coil disposed at least partially around, or adjacent to, the chamber, with an inductance of the first coil being between 1.1 and 2 times greater than an inductance of the second coil.

Abstract: An aerosol-generating device is provided, including: a housing having a chamber configured to receive at least a portion of an aerosol-generating article; an inductor coil disposed around at least a portion of the chamber; a plurality of elongate susceptor elements projecting into the chamber and spaced apart from each other, the susceptor elements each extending substantially parallel to a magnetic axis of the inductor coil; and a power supply and a controller connected to the inductor coil and configured to provide an alternating electric current to the inductor coil such that the inductor coil generates an alternating magnetic field to heat the susceptor elements and thereby heat at least a portion of the article received in the chamber, the inductor coil being helical and having a non-circular cross-sectional shape. An aerosol-generating system including the device, the article, and the susceptor elements, is also provided.

Abstract: An aerosol-generating system including a cartridge is provided, the cartridge including a liquid storage portion including a housing configured to hold a liquid aerosol-forming substrate, the housing having an opening; and a heater assembly including at least one heater element fixed to the housing and extending across an opening of the housing, wherein a width of the at least one heater element of the heater assembly is smaller than a width of the opening of the housing. The heater element may be spaced from a periphery of the opening, leading to more efficient heating and aerosol production.

Abstract: An inductive heating device (1) for heating an aerosol-forming substrate (20) comprising a susceptor (21) comprises: a device housing (10), a DC power source (11) for providing a DC supply voltage(VDC) and a DC current (IDC), a power supply electronics (13) comprising a DC/AC converter (132), the DC/AC converter (132) comprising an LC load network (1323) comprising a series connection of a capacitor (C2) and an inductor (L2) having an ohmic resistance (RCoil), a cavity (14) in the device housing (10) for accommodating a portion of the aerosol-forming substrate (20) to inductively couple the inductor (L2) of the LC load network (1323) to the susceptor (21). The power supply electronics (13) further comprises a microcontroller (131) to determine from the DC supply voltage (VDC) and the DC current (IDC) an apparent ohmic resistance (Ra), and from the apparent ohmic resistance (Ra) the temperature (T) of the susceptor (21).

Abstract: An electrically conductive flat filament arrangement for a fluid permeable heater assembly for aerosol-generating systems includes a center portion and two side portions. The two side portions are on opposite sides of the center portion. The center portion defines a heating region of the filament arrangement and the side portions define electrical contact regions of the filament arrangement. The center portion and the two side portions each include a plurality of openings. Each plurality of openings defines an open area of the center portion and an open area of each of the two side portions. A percentage of the total area of the center portion including the open area of the center portion is greater than the percentage of the total area of one of the side portions including the open area of the side portion.

Abstract: An aerosol-generating device is provided, including a housing defining a chamber configured to receive at least a portion of an aerosol-generating article; an inductor coil disposed around at least a portion of the chamber; an elongate susceptor element configured for removable attachment to the housing within the chamber and projecting into the chamber when the element is removably attached to the housing; an aperture positioned on a side of the housing, the aperture and the element being configured for insertion of the element into the chamber through the aperture and configured for removal of the element from the chamber through the aperture; and a power supply and a controller connected to the coil and to provide an alternating electric current to the coil such that the coil generates an alternating magnetic field to heat the element and thereby heat at least a portion of the article received within the chamber.

Abstract: An electronic aerosol-generating device includes a housing extending between first and second ends along a longitudinal axis. The second end of the housing defines a cavity for receiving a consumable containing an aerosol generating substrate. The device further includes a heating component comprising a heating element extending along the longitudinal axis within the cavity and configured to penetrate into the aerosol generating substrate when the consumable is inserted into the cavity. The heating element comprises a material having a Curie temperature of less than 500° C. The device also includes an inductor comprising an inductor coil positioned to transfer magnetic energy to the heating element. The inductor is configured to induce eddy currents and/or hysteresis losses in the heating element. The device further includes a power supply operably connected to the inductor and control electronics operably connected to the power supply and configured to control heating of the heating element.

Abstract: The present invention relates to an electrical heating assembly of an aerosol-generating device for resistively heating an aerosol-forming substrate. The heating assembly comprises a control circuit configured to provide an AC driving current. The heating assembly further comprises an electrically resistive heating element for heating the aerosol-forming substrate. The heating element is operatively coupled with the control circuit and configured to heat up due to Joule heating when passing an AC driving element provided by the control circuit current through the heating element. The present invention further relates to an aerosol-generating device for use with an aerosol-forming substrate, wherein the aerosol-generating device comprises a heating assembly according to the invention. The invention also provides a method for resistively heating an aerosol-forming substrate by passing an AC driving current through a resistive heating element.

Abstract: A cartridge for use in an aerosol-generating system is provided, including a liquid storage portion including a housing configured to hold a liquid aerosol-forming substrate, the liquid storage portion including at least two parts in fluid communication with each other; a first part of the liquid storage portion including a heater assembly, a first capillary material, provided in contact with the heater assembly, and a second capillary material in contact with the first capillary material and spaced apart from the heater assembly by the first capillary material; and a second part of the liquid storage portion including a container configured to hold the liquid aerosol-forming substrate in liquid form to supply the liquid to the second capillary material.

Abstract: There is described an aerosol-forming substrate for use in combination with an inductive heating device. The aerosol-forming substrate comprises a solid material capable of releasing volatile compounds that can form an aerosol upon heating of the aerosol-forming substrate, and at least a first susceptor material for heating of the aerosol-forming substrate. The first susceptor material has a first Curie-temperature and is arranged in thermal proximity of the solid material. The aerosol-forming substrate comprises at least a second susceptor material having a second Curie-temperature which is arranged in thermal proximity of the solid material. The first and second susceptor materials have specific absorption rate (SAR) outputs which are distinct from each other.

Abstract: An aerosol-generating device is provided, including one or more DC power sources; a load network including an inductor and a capacitor connected in series; first drive circuitry connected to the DC power source(s) and across the network and being configured to provide a first voltage drop across the network; second drive circuitry connected to the DC power source(s) and across the network and being configured to provide a second voltage drop across the network, the second voltage drop being in an opposite direction to the first voltage drop; and a controller connected to the first and the second drive circuitry and being configured to control the first and the second drive circuitry so that both the first and the second voltage drops are provided across the network periodically and so that the second voltage drop is not provided across the network simultaneously with the first voltage drop.

Abstract: The present invention relates to an electrical heating assembly of an aerosol-generating device for resistively heating an aerosol-forming substrate. The heating assembly comprises a control circuit configured to provide an AC driving current. The heating assembly further comprises an electrically resistive heating element comprising an electrically conductive ferromagnetic or ferrimagnetic material for heating the aerosol-forming substrate. The heating element is operatively coupled with the control circuit and configured to heat up due to Joule heating when passing an AC driving element provided by the control circuit current through the heating element. The present invention further relates to an aerosol-generating device for use with an aerosol-forming substrate, wherein the aerosol-generating device comprises a heating assembly according to the invention.

Abstract: A fluid permeable heater assembly for an aerosol-generating system includes a cap and a substantially flat electrically conductive and fluid permeable heating element. The cap includes a hollow body with a first cap opening and a second cap opening. The first cap opening is opposite to the second cap opening. The heating element is configured to vaporise aerosol-forming substrate. The heating element is mounted on the cap, such that the heating element extends across the first cap opening. A cartridge for an aerosol-generating system includes the heater assembly, a liquid storage portion, a mouth piece, and a retainer.

Abstract: An inductive heating device (1) comprises a device housing (10) a DC power source (11), a power supply electronics (13) comprising a DC/AC inverter (132) including a Class-E power amplifier with a transistor switch (1320), a transistor switch driver circuit (1322), and an LC load network (1323) configured to operate at low ohmic load (1324), the LC load network (1323) comprising a shunt capacitor (C1) and a series connection of a capacitor (C2) and an inductor (L2), and a cavity (14) arranged in the device housing (10), the cavity (14) having an internal surface shaped to accommodate at least a portion of the aerosol-forming substrate (20), wherein the cavity (14) is arranged such that the inductor (L2) is inductively coupled to the susceptor (21) of the aerosol-forming substrate (20) during operation.

Abstract: The present invention relates to an aerosol-generating device (100) for use with a plurality of aerosol-forming substrates. The device comprises a receiving sleeve (102) which in turn comprises an inner receiving zone (110) within the receiving sleeve for receiving at least a first aerosol-forming substrate, and an outer receiving zone (120) extending across at least a portion of an outer circumferential periphery of the receiving sleeve for receiving at least a second aerosol-forming substrate. The device further comprises an electrical heater for heating at least the first aerosol-forming substrate or the second aerosol-forming substrate when being received in the first or second receiving zone, respectively. The invention further relates to an aerosol-generating article (200), in particular for use with such a device.