Aerosol generation device

Abstract

An aerosol generating device (101) is described. The device (101) generates an aerosol from an aerosol generating material. The device (101) has a receptacle (212) defining a heating zone (215) in which at least a portion of an article (110) including the aerosol generating material is received. A heating element (220) projects into the heating zone (215). A seal (300) is configured to seal between the article (110) and at least one of the receptacle (212) and the heating element (220).

Description

Technical Field

[0001] The present invention relates to an aerosol generating device for generating an aerosol from an aerosol generating material. The present invention also relates to an aerosol supply system comprising an aerosol generating device and an article containing an aerosol generating material.

Background Art

[0002] (Background) Smoking articles such as cigarettes and cigars burn tobacco during use to generate tobacco smoke. Attempts have been made to provide alternatives to these articles that burn tobacco by creating products that release compounds without burning. An example of such a product is a heating device that heats a material to release compounds without burning. The material can be, for example, tobacco or other non-tobacco products that may or may not contain nicotine.

Summary of the Invention

[0003] (Summary) According to one aspect, there is provided an aerosol generating device for generating an aerosol from an aerosol generating material, the aerosol generating device comprising a receptacle defining a heating zone configured to receive at least a portion of an article containing the aerosol generating material, a heating element protruding into the heating zone, and a seal configured to seal between the article and at least one of the receptacle and the heating element.

[0004] The heating element can be configured to be heated to a temperature sufficient to generate an aerosol from the aerosol generating material.

[0005] The seal can protrude within the heating zone.

[0006] The device can comprise an opening at a proximal end of the receptacle into which at least a portion of the article is received and a distal end, the seal being at the distal end.

[0007] The seal may be spaced apart from the opening.

[0008] The seal may extend around the heating element.

[0009] The seal may comprise at least one of a lip seal, an O-ring, and a face seal. The seal may comprise at least one of a chamfer, a collar, a shoulder, a gasket, a skirt, and a protrusion.

[0010] The seal may comprise a seal member. The seal member may be a seal member extending in the circumferential direction. The seal member may comprise a flexible member. The seal member may comprise an elastic member.

[0011] The seal may be a rigid member.

[0012] The seal member may be held by one or both of the receptacle and the heating element.

[0013] The seal may comprise at least two seal members. The seal may comprise a plurality of ridges.

[0014] The seal member may comprise a protrusion extending in the circumferential direction.

[0015] At least two seal members may be axially spaced apart along the heating zone. At least two seal members may be radially spaced apart.

[0016] The seal member may extend circumferentially around the heating element. The seal member may extend circumferentially around the heating zone. The seal may be spaced apart from the receptacle.

[0017] The seal may be configured to seal the article at the junction of the heating element and the receptacle.

[0018] The heating element may comprise at least a part of the seal.

[0019] The heating element may include a heating member and a seal member for the seal around the heating member.

[0020] The seal member may include a chamfered portion of the heating element. The seal member may include a shoulder portion of the heating element. The seal member may include a stepped portion of the heating element. The seal member may include a collar of the heating element. The collar may be a protrusion extending in the circumferential direction.

[0021] The seal member may be formed integrally with the heating member. As used herein, the term "formed integrally" is intended to mean that the features are not separable.

[0022] The seal member may form an integral component with the heating member. As used herein, the term "integral component" is intended to mean that the features are formed together such that no joint is defined between them.

[0023] The seal member may be formed from the same material as the heating member.

[0024] The seal member may be formed from a material different from the heating member. The seal member may be molded with the heating member. The seal member may be joined to the heating member.

[0025] The heating element may include a heating material that can be heated by penetration of a variable magnetic field.

[0026] The seal may include a heating material that can be heated by penetration of a variable magnetic field.

[0027] The seal may not include a heating material that can be heated by penetration of a variable magnetic field.

[0028] The receptacle may include at least a part of the seal.

[0029] The receptacle may include a base and a peripheral wall.

[0030] The peripheral wall may comprise an elongated hollow member. The seal may project from the elongated hollow member. The seal may project inwardly. The elongated hollow member may be tubular. The base may close one end of the elongated hollow member.

[0031] The base may comprise a seal member of the seal. The seal member may stand upright from the base.

[0032] The peripheral wall may comprise a seal member of the seal.

[0033] The seal may project from the receptacle into the heating zone.

[0034] The seal member may be formed integrally with the receptacle. The seal member may form an integral component with the receptacle. The seal member may be formed from the same material as the receptacle. The seal member may be formed from a material different from that of the receptacle. The seal member may be molded with the receptacle. The seal member may be joined to the receptacle.

[0035] The receptacle may not contain a heating material that can be heated by penetration by a variable magnetic field.

[0036] The seal may be spaced apart from the base.

[0037] The seal may be configured to seal at the end of the article.

[0038] The seal may be configured to seal between the heating element and the article.

[0039] The seal may be configured to seal inside the bore of the article. The seal may be configured to seal between the receptacle and the outside of the article.

[0040] The seal can be configured to isolate an air path formed between the article and at least one of the receptacle and the heating element. The seal can be configured to define an air path through the article that is isolated from at least a portion of a gap formed between the receptacle and the article.

[0041] The heating element can include an air outlet to the heating zone and an air path defined within the heating element.

[0042] The seal can be configured to perform at least one of deforming and expanding at least a portion of the article when the article is received within the heating zone.

[0043] The seal can be configured to perform at least one of expanding and deforming at least a portion of the article when at least a portion of the article is received within the heating zone.

[0044] The heating element can include a portion extending externally from the receptacle. The heating element can include a first portion external to the heating zone and a second portion protruding within the heating zone. The portion extending externally from the receptacle can be heated and thermally conductively connected to the portion of the heating element within the heating zone. As used herein, the term "electrically conductively connected between" does not necessarily mean that the two features are directly connected therebetween, and such a configuration can include one or additional features therebetween.

[0045] The device can include a magnetic field generator including an inductor coil configured to generate a varying magnetic field.

[0046] The inductor coil can be a helical inductor coil. The inductor coil can be at least one of a planar coil and a spiral coil. The spiral coil can be a flat spiral coil.

[0047] The heating element can include a part of a resistive heating configuration.

[0048] The device of this aspect can optionally include one or more, or all, of the features described below.

[0049] According to one aspect, there is provided an aerosol supply system comprising the aerosol generation device described above and an article containing an aerosol generation material.

[0050] According to one aspect, there is provided an aerosol generation system comprising an article containing an aerosol generation material and an aerosol generation device for heating the aerosol generation material, the aerosol generation device comprising a receptacle defining a heating zone configured to receive at least a portion of the article, a heating element protruding into the heating zone, and a seal for at least one of the receptacle and the heating element configured to form at least a portion of an air path extending through the article and isolated from at least a portion of a gap formed between the receptacle and the article.

[0051] The article may comprise a pre-formed bore configured to receive the heating element.

[0052] The seal may be configured to seal on the surface of the bore.

[0053] The article may comprise an engagement feature configured to engage with the seal.

[0054] The engagement feature may be at least one of a bore, a collar, a shoulder, a ridge, a protrusion, a recess, a lip, a chamfer, a region of increased thickness, a region of reduced thickness, a surface and an edge.

[0055] The seal may be configured to engage with a relatively elastic engagement feature of the article.

[0056] The seal may be configured to engage with a relatively inelastic engagement feature of the article.

[0057] The article may have an outer side of the article, and the seal may be configured to perform at least one of deforming and expanding the outer side of the article when the article is received within the heating zone.

[0058] The seal may be configured to compress the article.

[0059] The seal may be configured to form a depression in the outer side of the article.

[0060] The article may have an outer side, and the seal may be configured to perform at least one of deforming and expanding the outer side of the article when the article is received within the heating zone. Insertion of the article may be configured to deform the seal.

[0061] The article may be a consumable.

[0062] The heating element may be removable from the heating zone. The heating element may be replaceable.

[0063] The heating element may stand upright from a base. The heating element may comprise a sharp edge or tip at a free end. The heating element may be a pin or blade. The heating element may be configured to penetrate an article received by the heating zone.

[0064] The heating element and the receptacle may be coaxial.

[0065] An apparatus in this aspect can include, optionally, one or more, or all, of the features described above.

[0066] The aerosol generating device may be a non-flammable aerosol generating device.

[0067] The device may be a tobacco heating device, also known as a non-combustion heating device.

[0068] The aerosol - generating material can be a non - liquid aerosol - generating material.

[0069] The article can be dimensioned to be at least partially received within the heating zone.

[0070] According to one aspect, an aerosol - generating device for generating an aerosol from an aerosol - generating material is provided. The aerosol - generating device comprises a receptacle defining a heating zone configured to receive at least a portion of an article containing the aerosol - generating material, and a heating element configured to heat the heating zone.

[0071] According to one aspect, an aerosol - generating system is provided that comprises an article containing an aerosol - generating material and an aerosol - generating device for heating the aerosol - generating material. The aerosol - generating device comprises a heating zone configured to receive at least a portion of the article and a heating element.

[0072] According to one aspect, an aerosol - generating device for generating an aerosol from an aerosol - generating material is provided. The aerosol - generating device comprises a heating element configured to be received within at least a portion of an article containing the aerosol - generating material, a base from which the heating element protrudes, and a seal configured to seal between the article and at least one of the base and the heating element.

[0073] The heating element can be configured to be heated to a temperature sufficient to generate an aerosol from the aerosol - generating material.

[0074] The device can comprise a heating zone around the heating element and can be configured to at least partially receive an article containing the aerosol - generating material.

[0075] The seal can protrude within the heating zone.

[0076] The device can comprise a housing, and the housing defines the base.

[0077] At least a part of the heating element may be exposed.

[0078] The seal may extend around the heating element.

[0079] The seal may extend around the proximal end of the heating element.

[0080] The seal may comprise at least one of a lip seal, an O-ring, and a face seal.

[0081] The seal may comprise at least one of a chamfer, a collar, a shoulder, a gasket, and a protrusion.

[0082] The seal may comprise a seal member. The seal member may be a seal member extending in the circumferential direction. The seal member may comprise a flexible member. The seal member may comprise an elastic member.

[0083] The seal may be a rigid member.

[0084] The seal member may be held by one or both of the housing and the heating element.

[0085] The seal may comprise at least two seal members. The seal may comprise a plurality of ridges.

[0086] The seal member may comprise a protrusion extending in the circumferential direction.

[0087] At least two seal members may be axially spaced along the heating zone. At least two seal members may be radially spaced.

[0088] The seal member may extend circumferentially around the heating element.

[0089] The seal may be configured to seal with an article at the junction of the heating element and the base.

[0090] The base may comprise at least a part of the seal.

[0091] The heating element may comprise a heating member and a seal member of the seal around the heating member.

[0092] The seal member may comprise a chamfered portion of the heating element. The seal member may comprise a shoulder portion of the heating element. The seal member may comprise a stepped portion of the heating element. The seal member may comprise a collar of the heating element. The collar may be a protruding portion extending in the circumferential direction.

[0093] The seal member may be integrally formed with the heating member. As used herein, the term "integrally formed" is intended to mean that the features are not separable.

[0094] The seal member may form an integral component with the heating member. As used herein, the term "integral component" is intended to mean that the features are formed together such that no joint is defined therebetween.

[0095] The seal member may be formed of the same material as the heating member.

[0096] The seal member may be formed of a material different from that of the heating member. The seal member may be molded with the heating member. The seal member may be joined to the heating member.

[0097] The heating element may include a heating material that can be heated by penetration of a variable magnetic field.

[0098] The seal may include a heating material that can be heated by penetration of a variable magnetic field.

[0099] The seal may not include a heating material that can be heated by penetration of a variable magnetic field.

[0100] The housing may comprise at least a part of the seal. The base may comprise at least a part of the seal.

[0101] The housing may include a seal member of the seal. The base may include a seal member of the seal.

[0102] The seal member may stand upright from the base.

[0103] The base may include an upright rim that extends around the proximal end of the heating element and is spaced apart from the proximal end of the heating element.

[0104] The seal member may include a peripheral protrusion extending from the upright rim.

[0105] The seal member may protrude from the upright rim.

[0106] The chamfered portion may define a tapered portion of the upright rim.

[0107] The upright rim and the base may form a recess.

[0108] The recess may accommodate at least a portion of the heating member.

[0109] The seal may be provided in the recess.

[0110] The seal member may be integrally formed with the base. The seal member may form an integral component with the base. The seal member may be formed of the same material as the base. The seal member may be formed of a material different from that of the base. The seal member may be molded with the base. The seal member may be joined to the base.

[0111] The seal member may be integrally formed with the upright rim. The seal member may form an integral component with the upright rim. The seal member may be formed of the same material as the upright rim. The seal member may be formed of a material different from that of the upright rim. The seal member may be molded with the upright rim. The seal member may be joined to the upright rim.

[0112] The seal may be spaced apart from the base.

[0113] The seal may be spaced apart from the upright rim.

[0114] The seal may be configured to seal at an end of the article.

[0115] The seal may be configured to seal between the heating element and the article. The seal may be configured to seal inside the bore of the article. The seal may be configured to seal between the recess and the outside of the article. The seal may be configured to seal between the upright rim and the outside of the article.

[0116] The seal may be configured to isolate an air passage defined between the article and at least one of the base and the heating element.

[0117] The heating element may comprise an air outlet to the heating zone and an air passage defined within the heating element.

[0118] The heating element may comprise at least a part of the seal.

[0119] The heating element may comprise a heating member and a seal member of the seal around the heating member.

[0120] The heating element may include a heating material that can be heated by penetration by a variable magnetic field.

[0121] The seal may include a heating material that can be heated by penetration by a variable magnetic field.

[0122] The heating element may comprise an air outlet to the heating zone and an air passage defined within the heating element.

[0123] The seal may be configured to perform at least one of deforming and expanding at least a part of the article when the heating element is received within at least a part of the article.

[0124] The device may comprise a magnetic field generator including an inductor coil configured to generate a variable magnetic field.

[0125] The inductor coil can be a spiral inductor coil. The inductor coil can be at least one of a planar coil and a spiral coil. The spiral coil can be a flat spiral coil.

[0126] The heating element can comprise part of a resistive heating assembly.

[0127] According to one aspect, there is provided an aerosol generating system comprising an article comprising an aerosol generating material and an aerosol generating device for heating the aerosol generating material, the aerosol generating device being configured to be received within at least a portion of the article comprising the aerosol generating material, a heating element, a base from which the heating element protrudes, and a seal configured to define at least a portion of an air path extending through the article and provided for at least one of the base of the housing and the heating element. According to one aspect, there is provided an aerosol generating device for generating an aerosol from an aerosol generating material, the device comprising a housing, an exposed heating assembly protruding from the housing and configured to be received within the aerosol generating article and to heat the aerosol generating article and.

[0128] The heating assembly can comprise a heating element protruding from the housing and configured to be received within the aerosol generating article.

[0129] The housing can comprise a base from which the heating element protrudes.

[0130] The seal can be configured to seal between the article and at least one of the base and the heating element.

[0131] A heating zone can extend around the exposed heating assembly and be configured to at least partially receive an article comprising an aerosol generating material.

[0132] According to one aspect, there is provided an aerosol generating system comprising an article containing an aerosol generating material and an aerosol generating device for heating the aerosol generating material as described above.

[0133] The devices of these aspects can, if necessary, include one or more, or all, of the features described above.

[0134] Next, embodiments will be described by way of example only, with reference to the accompanying drawings.

Brief Description of the Drawings

[0135]

Figure 1

Figure 2

Figure 2A

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7a

Figure 7b

Figure 7c

Figure 7d

Figure 7e

Figure 8a

Figure 8b

Figure 8c

Figure 8d

Figure 8e

Figure 8f

Figure 8g

Figure 9a

Figure 9b

Figure 9c

Figure 9e

Figure 9f

Figure 9g

DETAILED DESCRIPTION OF THE INVENTION

[0136] (Detailed Description) As used herein, the term "aerosol generating material" refers to a material that can generate an aerosol when heated, irradiated, or pressurized by any other method. The aerosol generating material can be in the form of a solid, liquid, or gel, which may or may not contain, for example, an active substance and / or a flavoring material. The aerosol generating material can include any plant-based material such as a tobacco-containing material, and can include, for example, one or more of tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. The aerosol generating material can also include other non-tobacco products, which may or may not contain nicotine depending on the product. The aerosol generating material can be in the form of, for example, a solid, liquid, gel, wax, etc. The aerosol generating material can also be, for example, a combination or blend of materials. The aerosol generating material is sometimes also known as a "smoking material".

[0137] The aerosol generating material can include a binder and an aerosol forming material. Optionally, an active and / or filler may also be present. Optionally, a solvent such as water is also present, and one or more other components of the aerosol generating material may or may not be soluble in the solvent. In some embodiments, the aerosol generating material substantially does not contain plant material. In some embodiments, the aerosol generating material substantially does not contain tobacco.

[0138] The aerosol generating material can contain or be an "amorphous solid". The amorphous solid can be a "monolithic solid". In some embodiments, the amorphous solid can be a dry gel. The amorphous solid is a solid material that can hold some fluid such as a liquid therein. In some embodiments, the aerosol generating material can include, for example, from about 50 wt%, 60 wt%, or 70 wt% to about 90 wt%, 95 wt%, or 100 wt% of the amorphous solid.

[0139] The aerosol - generating material may include an aerosol - generating film. The aerosol - generating film may comprise or be a sheet that can optionally be shredded to form a shredded sheet. The aerosol - generating sheet or shredded sheet may be substantially tobacco - free.

[0140] Devices are known that heat an aerosol - generating material to volatilize at least one component of the aerosol - generating material to form an aerosol that can typically be inhaled without burning or combusting the aerosol - generating material. Such devices may be described as an “aerosol - generating device”, “aerosol - supply device”, “non - combustion heating device”, “tobacco - heated product device” or “tobacco - heating device”. Similarly, there are so - called e - cigarette devices that typically vaporize an aerosol - generating material in liquid form, which may or may not contain nicotine. The aerosol - generating material may be in the form of a rod, cartridge or cassette that can be inserted into the device or provided as part of it. A heater for heating and volatilizing the aerosol - generating material may be provided as a “permanent” part of the device.

[0141] An aerosol - generating device can receive an article containing an aerosol - generating material for heating. An “article” in this context is a component that contains or holds an aerosol - generating material during use, which is heated during use to volatilize the aerosol - generating material and optionally other components. A user can insert the article into the aerosol - supply device before it is heated to generate an aerosol, and then the user inhales the aerosol. The article may be of a predetermined or specific size configured to be placed, for example, within a heating chamber of the device sized to receive the article.

[0142] Figure 1 shows an example of an aerosol generation system 100. The system 100 includes an aerosol generation device 101 for generating an aerosol from an aerosol generation medium / material, and a replaceable article 110 containing the aerosol generation medium. The device 101 can be used to heat the replaceable article 110 containing the aerosol generation medium to generate an aerosol or other inhalable medium that can be inhaled by a user of the device 101.

[0143] The device 101 includes a housing 103 that surrounds and houses various components of the device 101. The housing 103 is elongated. The device 101 has an opening 104 at one end into which the article 110 can be inserted for heating by the device 101. The article 110 can be fully or partially inserted into the device 101 for heating by the device 101.

[0144] In various embodiments, the device 101 does not have an opening. In such a configuration, the device 101 or its components can be partially received within at least a portion of the article 110.

[0145] The device 101 can include a user-operable control element 106, such as a button or switch, that operates the device 101 when actuated, for example, pushed. For example, a user can operate the device 101 by pressing the switch 106.

[0146] The device 101 defines a longitudinal axis 102, and when the article 110 is inserted into the device 101, it can extend along the longitudinal axis 102. The opening 104 is aligned on the longitudinal axis 102.

[0147] Figure 2 is a schematic diagram of the aerosol generation system 100 of Figure 1, showing various components of the device 101. It will be understood that the device 101 can include other components not shown in Figure 2.

[0148] As shown in FIG. 2, device 101 includes an apparatus 200 for heating an aerosol-generating material. The apparatus 200 includes a heating assembly 201, a controller (control circuit) 202, and a power source 204. The apparatus 200 comprises a body assembly 210. The body assembly 210 may include a chassis and other components that form part of the device. The heating assembly 201 is configured to heat the aerosol-generating medium or material of an article 110 inserted into the device 101 such that an aerosol is generated from the aerosol-generating medium. The power source 204 supplies power to the heating assembly 201, and the heating assembly 201 converts the supplied electrical energy into thermal energy for heating the aerosol-generating material.

[0149] The power source 204 may be a battery, such as a rechargeable battery or a non-rechargeable battery. Examples of suitable batteries include, for example, lithium batteries (such as lithium-ion batteries), nickel batteries (such as nickel-cadmium batteries), and alkaline batteries.

[0150] The power source 204 may be electrically coupled to the heating assembly 201 to supply power under the control of the controller 202 as required to heat the aerosol-generating material. The control circuit 202 may be configured to activate and deactivate the heating assembly 201 based on the user operating the control element 106. For example, the controller 202 may activate the heating assembly 201 in response to the user operating the switch 106.

[0151] The end of the device 101 closest to the opening 104 is sometimes known as the proximal end (or mouth-side end) 107 of the device 101 because it is closest to the user's mouth during use. During use, the user inserts the article 110 into the opening 104, operates the user control 106 to begin heating the aerosol-generating material, and inhales the aerosol generated within the device. Thereby, the aerosol flows through the article 110 along the flow path towards the proximal end of the device 101.

[0152] The other end of the device that is farthest from the opening 104 is sometimes known as the distal end 108 of the device 101 because it is the end that is farthest from the user's mouth during use. When the user inhales the aerosol generated within the device, the aerosol flows in a direction towards the proximal end of the device 101. The terms proximal and distal as applied to the features of the device 101 are explained by reference to the relative positioning of such features with respect to each other in the proximal-distal direction along the axis 102.

[0153] The heating assembly 201 may comprise various components for heating the aerosol-generating material of the article 110 via an induction heating process. Induction heating is a process of heating a conductive heating element (such as a susceptor) by electromagnetic induction. The induction heating assembly may comprise an induction element, for example one or more inductor coils, and a device for passing a varying current, such as an alternating current, through the induction element. The varying current within the induction element generates a varying magnetic field. The varying magnetic field penetrates a susceptor (heating element) appropriately positioned relative to the induction element and generates eddy currents within the susceptor. The susceptor has an electrical resistance to the eddy currents, and thus the flow of the eddy currents against this resistance heats the susceptor by Joule heating. If the susceptor contains a ferromagnetic material such as iron, nickel or cobalt, heat may also be generated by magnetic hysteresis losses within the susceptor, i.e. as a result of the alignment of the magnetic dipoles within the magnetic material changing due to the alignment of the magnetic dipoles with the varying magnetic field. In induction heating, heat is generated inside the susceptor, enabling rapid heating, for example as compared to heating by conduction. Furthermore, no physical contact is required between the induction element and the susceptor, allowing for increased freedom in construction and use.

[0154] The device 200 is configured to receive an article 110 to be heated and includes a dimensioned heating chamber 211. The heating chamber 211 defines a heating zone 215. In this example, the article 110 is substantially cylindrical, and correspondingly, the shape of the heating chamber 211 is substantially cylindrical. However, other shapes are possible. The heating chamber 211 is formed by a receptacle 212. The receptacle 212 includes an end wall 213 and a peripheral wall 214. The end wall 213 functions as the base of the receptacle 212. The receptacle 212 in the embodiment is a one-piece component. In other embodiments, the receptacle 212 comprises two or more components.

[0155] The heating chamber 211 is defined by the inner surface of the receptacle 212. The receptacle 212 functions as a support member. The receptacle 212 comprises a substantially tubular member. The receptacle 212 extends substantially coaxially therearound along the longitudinal axis 102 of the device 101. However, other shapes are possible. The receptacle 212 (and thus the heating zone 215) is open at its proximal end such that an article 110 inserted into the opening 104 of the device 101 can be received thereby by the heating chamber 211 therethrough. The receptacle 212 is closed at its distal end by the end wall 213. The receptacle 212 may comprise one or more conduits that form part of an air path. In use, the distal end of the article 110 can be disposed adjacent to or engaged with the end of the heating chamber 211. Air can enter the heating chamber 211 through one or more conduits that form part of the air path and flow through the article 110 towards the proximal end of the device 101.

[0156] The receptacle 212 is formed without including a material heatable by penetration of a variable magnetic field. The receptacle 212 can be formed from an insulating material. For example, the receptacle 212 can be formed from a plastic such as polyetheretherketone (PEEK). Other suitable materials are possible. The receptacle 212 can be formed from a material that ensures that the assembly remains rigid / solid when the heating assembly 201 is operated. Using a non-metallic material for the receptacle 212 can help limit heating of other components of the device 101. The receptacle 212 can be formed from a rigid material to assist in supporting other components.

[0157] Other configurations for the receptacle 212 are possible. For example, in one embodiment, the end wall 213 is defined by a portion of the heating assembly 201. In an embodiment, the receptacle 212 includes a material heatable by penetration of a variable magnetic field. As shown in FIG. 2, the heating assembly 201 includes a heating element 220. The heating element 220 is configured to heat the heating zone 215. The heating zone 215 is defined within the heating chamber 211. In an embodiment, the heating chamber 211 defines a part or the extent of the heating zone 215.

[0158] The heating zone 215 is a zone or volume into which an article can be received for heating by the device 101. Thus, the heating zone 215 is at least partially defined by the heating assembly 201. The heating zone 215 is a space adjacent to the heating element 220. In an embodiment with a heating chamber 211 as shown in FIG. 2, the heating chamber 211 delimits the heating zone 215. That is, the heating chamber defines the heating zone 215. In an embodiment, the heating element 220 defines the heating zone.

[0159] As shown in FIG. 2A, in various embodiments, device 200 does not have a heating chamber. The heating element protrudes from housing 103. In such embodiments, the receptacle and heating chamber may be omitted, and the heating element may be surrounded by free space. The heating element, or at least a portion of the heating element, is not surrounded by a peripheral member, such as the peripheral wall of the device, when an article is on the heating element. The term “heating zone” is understood to include the space surrounding the heating element. That is, the heating zone may not be delimited or surrounded by components of device 101.

[0160] Heating element 220 is heatable to heat heating zone 215. Heating element 220 is an induction heating element. That is, heating element 220 includes a susceptor that can be heated by penetration by a varying magnetic field. The susceptor includes a conductive material suitable for heating by electromagnetic induction. For example, the susceptor may be formed from carbon steel. It will be understood that other suitable materials, such as ferromagnetic materials such as iron, nickel or cobalt, may be used.

[0161] Heating assembly 201 includes a magnetic field generator 240. Magnetic field generator 240 is configured to generate one or more varying magnetic fields that penetrate the susceptor to cause heating within the susceptor. Magnetic field generator 240 includes an inductor coil assembly 241. Inductor coil assembly 241 includes an inductor coil 242 that functions as an inductor element. Inductor coil 242 is a helical coil, although other configurations are contemplated. In an embodiment, inductor coil assembly 241 includes two or more inductor coils 242. The two or more inductor coils in the embodiment may be arranged adjacent to each other and coaxially aligned along an axis.

[0162] In some examples, during use, the inductor coil is configured to heat heating element 220 to a temperature of from about 200° C. to about 350° C., such as from about 240° C. to about 300° C., or from about 250° C. to about 280° C.

[0163] In an embodiment, the heating element forms part of a heating structure. The heating structure comprises a heating element protruding from a base. In other embodiments, the heating element is within the article and the heating structure comprises a protruding member protruding from the base. The heating element or protruding member in an embodiment comprises a magnetic field generator configured to generate a varying magnetic field, including an inductor coil. The heating structure in an embodiment is an inductive heating structure. The heating structure in an embodiment is a resistive heating structure.

[0164] The heating element 220 extends within the heating zone 215. The heating element 220, which functions as a protruding element, protrudes within the heating zone 215. The heating element 220 stands upright from the base.

[0165] In an embodiment, the base is formed by features other than the end wall 213 of the receptacle.

[0166] The heating element 220 is spaced from the peripheral wall 214. The heating assembly 201 is configured such that when the article 110 is received by the heating chamber 211, the heating portion 221 of the heating element 220 extends within the distal end of the article 110. The heating element 220 is disposed within the article 110 during use. The heating element 220 is configured to heat the aerosol-generating material within the article 110 from the inside and is thus referred to as an inner heating element.

[0167] The heating element 220 extends axially (along the longitudinal axis 102 of the device) into the heating chamber 211 from the distal end of the heating chamber 211. In an embodiment, the heating element 220 extends into the heating chamber 211 spaced from the axis 102. The heating element 220 may be off-axis or non-parallel with respect to the axis 102. Although one heating element 220 is shown, it will be understood that in an embodiment the heating assembly 201 comprises a plurality of heating elements 220. Such heating elements in an embodiment are spaced from each other but parallel.

[0168] The inductor coil 241 is disposed outside the receptacle 212. The inductor coil 241 surrounds the heating zone 215. The helical inductor coil 241 extends around at least a portion of the heating element 220 that functions as a susceptor. The helical inductor coil 241 is configured to generate a fluctuating magnetic field that penetrates the heating element 220. The helical inductor coil 241 is disposed coaxially with the heating chamber 211 and the longitudinal axis 101.

[0169] The inductor coil 241 is a helical coil including a conductive material such as copper. The coil is formed from a wire such as a litz wire wound helically around a support member. The support member is formed by the receptacle 212 or another component. In an embodiment, the support member is omitted. The support member is tubular. The coil 241 defines a substantially tubular shape. The inductor coil 241 has a substantially circular outer shape. In other embodiments, the inductor coil 241 may have different shapes such as substantially square, rectangular or elliptical. The coil width may increase or decrease along its length.

[0170] Other types of inductor coils, such as flat spiral coils, may be used. Using a helical coil, it is possible to define an elongated inductor zone for receiving the susceptor, which realizes an elongated susceptor to be received within the elongated inductor zone. The length of the susceptor exposed to the fluctuating magnetic field can be maximized. By realizing an enclosed inductor zone having a helical coil configuration, it is possible to assist the magnetic flux concentration of the magnetic field.

[0171] The litz wire comprises a plurality of individual wires that are individually insulated and twisted together to form a single wire. The litz wire is designed to reduce skin effect losses in the conductor. Other wire types such as solid wires may be used. The configuration of the helical inductor coil may vary along its axial length. For example, the inductor coil, or each inductor coil, may have substantially the same or different inductance values, axial lengths, radii, pitches, number of turns, etc.

[0172] The heating element 220 protrudes within the heating zone 215 and is received by the article 110. FIG. 2 shows the article 110 received within the device 101. The article 110 is sized to be received by the receptacle 212. The outer dimensions of the article 110 perpendicular to the longitudinal axis of the article 110 substantially match the inner dimensions of the chamber 211 perpendicular to the longitudinal axis 102 of the device 101 to enable insertion of the article 110 into the receptacle 212. In an embodiment, a gap 216 is defined between the outer side 111 of the article 110 and the inner side 217 of the receptacle 212. The gap 216 can function as an air passage along at least a portion of the axial length of the chamber 211. The insertion end 112 of the article 110 is positioned adjacent to the base of the receptacle 212.

[0173] FIG. 3 shows the article 110 partially inserted into the device 101. As shown, the article 110 is spaced apart from the heating element 220 within the heating zone 215. The article 110 can be in the process of being inserted or withdrawn from the heating element 215.

[0174] The heating element 220 extends within the heating zone 215 from the distal end of the receptacle 212. The heating element 220 stands upright from the end wall 213. The heating element 220 includes a heating member 224. The heating member 224 is elongated. The heating element 220 includes a proximal end 221 and an opposing free end 222. The heating portion 221 is a pin or a column. Other shapes are conceivable, for example, the heating portion 221 in an embodiment is a blade.

[0175] The heating element 220 includes an outer surface 223. The outer surface 223 extends around the heating element 220. The outer surface 223 extends between the proximal end 221 and the free end 222. The outer surface 223 defines the outside of the heating element 220. The heating element 220 is substantially cylindrical, although other shapes are conceivable.

[0176] An air flow configuration 250 is provided. The air flow configuration 250 forms part of an air path through the heating zone 215. The air flow configuration 250 comprises one or more conduits that form part of an air path along which air can enter into the heating chamber 211. The air flows through the articles within the heating chamber 211 towards the proximal end of the device 101. The air flow configuration 250 comprises an air conduit 251 within the heating element 220. The air conduit 251 communicates with the heating chamber 211 external to the receptacle 212. An air outlet 252 is formed within the heating element 220. The air outlet 252 comprises an array of apertures 253 on the outer surface 223 of the heating element 220. The heating element 220 is tubular and the array of apertures 253 provides communication between the inside and outside of the heating element 220. The configuration and arrangement of the air flow configuration 250, e.g. the array of apertures, may vary in embodiments. Four apertures 253 are shown, but the array of apertures 253 in an embodiment may be one or more apertures.

[0177] In an embodiment, the air flow configuration 250 is different. The air flow configuration 250 in an embodiment is not formed within the heating element 220. In an embodiment, one or more conduits of the air flow configuration 250 are formed at the end wall 213 of the receptacle.

[0178] The article 110 comprises a bore 113. The bore 113 is pre-formed within the article 110. In an embodiment, the bore 113 is formed by a tubular portion of the article 110. The bore 113 in an embodiment extends partially along the longitudinal axis of the article. The bore 113 comprises an inner surface 114. The bore 113 has a closed end 115. The heating member 224 is sized to be received within the bore 113. The heating member 224 and the bore 113 are complementarily sized to form a slip fit. The inner surface 114 of the bore is configured to form a close contact with the heating member 224 to maximize heat transfer between the heating element 220 and the article 110.

[0179] The free end 222 in this embodiment is not sharp. Referring to FIG. 4, in the embodiment, the bore 113 in the article 110 is omitted. In the embodiment, the outer dimension of the heating element is larger than the outer dimension of the bore. In such a configuration, the heating element is configured to deform and / or expand the article 110 to be inserted into the article 110. To facilitate this, the inner heating element 220 is configured to penetrate into the article 110 inserted into the device 101. In such an embodiment, the free end 222 of the heating element 220 has a sharp edge or tip. The free end 222 of the heating element 220 in the embodiment has a sharp edge, tip or other guiding feature to assist in the placement of the heating element 220 within the article 110.

[0180] As shown in FIGS. 2 and 3, the device 101 includes a seal 300 configured to seal with the article 110 within the heating chamber 211. The seal 300 seals with the article 110 at the proximal end 221 of the heating element 220. The seal 300 seals the heating element 220 at the insertion end 112 of the article. That is, when the article 110 is received at the distal end, a sealing action is formed between the article 110 and the heating element 220 at the distal end.

[0181] The seal 300 surrounds the heating member 224. The seal 300 includes a chamfered portion 301. The chamfered portion 301 functions as a seal member 305. The chamfered portion 301 forms a tapered end of the heating element 220. The chamfered portion 301 includes a contact surface 302. The contact surface 302 extends at an angle inclined with respect to the longitudinal axis.

[0182] In this embodiment, the chamfered portion 301 is formed by the heating element 220. In the embodiment, the chamfered portion 301 is formed by the base 213 of the receptacle 212. In such an embodiment, the chamfered portion 301 forms a collar attached around the heating element 220. In another embodiment, the seal 301 is a separate element on the heating element 220. The separate seal 301 can be fixedly attached, for example, by adhering or bonding to the heating element 220.

[0183] The chamfer portion 301 of the heating element 220 is formed integrally with the heating member 224. In one embodiment, the chamfer portion 301 is an integral component with the heating member 224. In such a configuration, the chamfer portion 301 that functions as a seal member is formed from a material that can be heated by the intrusion of a variable magnetic field. Accordingly, the chamfer portion is heatable.

[0184] In an embodiment, a part of the heating element 220 is formed from a material that cannot be heated by the intrusion of a variable magnetic field so that the heating material that can be heated by the intrusion of a variable magnetic field does not include a seal. Similarly, when the chamfer portion 301 is formed by the base portion 213 of the receptacle 212 or is a separate member, the seal may not include a heating material that can be heated by the intrusion of a variable magnetic field.

[0185] The seal 300 extends circumferentially around the heating member 224 to form a circumferential seal.

[0186] The chamfer portion 301 is rigid. The chamfer portion 301 that functions as the seal member 305 is configured to at least one of deform or expand the insertion end 112 of the article when the article 110 is received within the heating zone 215 and biased to contact the chamfer portion 301. In other embodiments, the seal member 305 is flexible and / or elastic as described below.

[0187] The seal member can be formed from an insulating material. For example, the seal member can be formed from a plastic such as polyetheretherketone (PEEK). Other suitable materials are possible. The seal member can be formed from a material that ensures that the seal member remains rigid / solid when the heating assembly 201 is operated.

[0188] When the article 110 is inserted, the insertion end 112 slides over the free end 222 of the heating element 220 such that the heating member 224 is received within the bore 113. When the article 110 contacts the chamfered portion 301, the rim of the article 110 at the end of the article 110 around the heating member 224 contacts the chamfered portion 301. The chamfered portion 301 applies a radial force to the portion of the article 110 that contacts the chamfered portion 301 when the article 110 is axially biased within the chamber 211. By the seal member 305 acting on the end of the article 110, the seal member 305 causes a sealing action to minimize the gap between the rim of the article formed around the heating member 224 and the heating element 220. With such a configuration, the air flow passing through the rim is minimized. The rim defines an inner rim. Thus, a sealing action occurs between the article 110 and the heating element. A separate air path may be defined within the article 110, for example from an opening 253 within the heating element 220, and formed external to the article 110, for example between the outer side 111 of the article 110 and the receptacle 212.

[0189] The seal 300 preferably restricts the flow of air within the heating chamber 211. Thus, it is possible to assist in more efficiently supplying air to the article 110 received within the device 101. By providing a barrier within the heating chamber 211, it is possible to define different air paths within the chamber and thus minimize the disruption of the air flow.

[0190] The seal 300 in the embodiments has different configurations. In the embodiments shown in FIGS. 2-4, the seal 300 includes a chamfered portion 301. The chamfered portion 301 is at the junction of the receptacle and the heating element 220. In the embodiments, the seal 300 is spaced from the receptacle 212. In such an embodiment, a gap is defined between the chamfered portion 301 and the base 213 of the receptacle 212.

[0191] In the embodiments described with reference to FIGS. 5, 6, and 7a-7e, the system 100 includes a device 101 and an article 110. The heating element 220 within the chamber 211 includes a seal 300. In each of these embodiments, the seal 300 can be a separate element on the heating member 224. In an embodiment, the seal 300 is an integral component with the heating member 224. Since this configuration is generally the same as that described above, a detailed description is omitted, and the features of the above and following embodiments are applicable to each other. In the embodiments described with reference to FIGS. 5, 6, and 7a-7e, configurations such as the shape and dimensions of the seal member are different.

[0192] As shown in FIG. 5, the heating element 220 includes a seal member 310. The seal member 310 includes a peripheral protrusion 310. The protrusion 310 extends circumferentially around the seal member 310. The seal member 310 is spaced from the base of the receptacle 212. The seal member 310 is proximal to the distal end of the heating element 220. In an embodiment, the seal member 310 is at the junction of the heating element 220 and the receptacle 212. The protrusion 310 forms a collar. The protrusion includes an outer surface having a proximal face 311 and a distal face 312. The proximal face 311 and the distal face 312 converge at an outer edge 313. The outer edge 313 forms a ridge.

[0193] When the article 110 is inserted into the heating chamber 211, the insertion end 112 of the article 110 contacts the seal member 310. When the insertion operation is maintained, the article 110 deforms and / or expands to receive the seal member 310 therein. In an embodiment of the article 110 having a pre-formed bore 113, the seal member 310 acts on the inner surface 114 of the bore 113 to seal against it. In an embodiment, the seal member 310 forms a depression in the inner surface 114.

[0194] In an embodiment, the seal member 310 has a different configuration. As shown in FIG. 7a, the seal member 315 of the seal 300 has an arcuate outer shape. That is, at least a part of the outer surface 316 of the seal member 315 is curved. Such a configuration may assist in minimizing the required insertion and removal forces while maintaining a good barrier action.

[0195] As shown in FIG. 7b, the seal 300 may include two or more seal members 320, 321. Each of the seal members 320, 321 extends around the heating member 224. As shown, the seal members 320, 321 are adjacent to each other, are integral components, and / or may be integrally formed. In an embodiment, the seal members 320, 321 are axially spaced apart as shown in FIG. 7d. By providing a plurality of seal members 320, 321, it is possible to provide a surplus, for example, if one of the seal members cannot engage with the article 110.

[0196] Further configurations are contemplated. For example, a seal 300 is shown in FIG. 7c in which the seal member has a surface 326 that extends axially between a proximal surface 326 and a distal surface 327. Such a configuration assists in maximizing the contact area between the seal member and the article 110.

[0197] In each of the embodiments described above, the seal member is configured to engage with a relatively elastic engagement feature of the article. Upon insertion, the seal member is configured to deform and / or expand the feature of the article to form a barrier. The seal member is relatively rigid.

[0198] In other embodiments, including those having the same or similar configurations as the embodiments described above, the seal is configured to engage with a relatively inelastic engagement feature of the article. Upon insertion, the seal member itself is configured to deform and / or expand when contacting the feature of the article to form a barrier. In such embodiments, the seal members shown in each of FIGS. 2, 3, 4, 5, 6, and 7a - 7d include a flexible member.

[0199] In an embodiment, the seal member is hollow to allow the flexible shell of the seal member to deform inward. In an embodiment, the seal member expands downward. For example, the seal member in each of FIGS. 5 and 7a-7d in the embodiment is an O-ring. The seal member can be a deformable rubber seal element.

[0200] The seal member in the embodiment is configured to function as a lip seal.

[0201] As shown in FIG. 7e, the seal 300 includes a seal member 330 that functions as a flexible seal. The seal member 330 is a lip seal. The seal member 330 includes a deformable collar around the heating member 224. The seal member 330 includes a circumferential leg.

[0202] The seal member 330 functions as a skirt. The seal member 330 has a peripheral lip 331. The lip 331 functions as a contact edge for the seal member 330. The seal 330 may include two or more seal members aligned axially along the heating member 224. The seal member 330 is biased to deform when contacting the inner surface 114 of the bore 113 of the article 110. By providing the bore 113 in the article 110 and the flexible lip seal, it is possible to minimize the required insertion and removal forces while ensuring a good sealing effect. By providing a pre-formed bore, it is possible to increase the elasticity of the seal member 330 such that when the heating member 224 is inserted into the article 110, the seal member slides along the bore.

[0203] For example, as shown in FIG. 6, in an embodiment, the seal 300 includes a step 335. The step 335 can be formed by the shoulder 336 of the heating element 220. The step 335 in the embodiment is formed by a sleeve. The step 335 can be formed by a part of the receptacle 212, for example, a flange standing upright from the base.

[0204] In an embodiment, the article 110 comprises corresponding engagement features configured to interact with the seal 300. The engagement features can be at least one of a color, a shoulder, a ridge, a protrusion, a recess, a lip, a chamfer, a skirt, a flare portion, a region of increased thickness, a region of reduced thickness, a surface, and an edge.

[0205] In FIG. 6, a recess 116 in the inner surface 114 of the bore 113 forms an engagement feature. The recess 116 extends from the insertion end 112. In an embodiment, the recess 116 is spaced from the insertion end 112. The recess 116 in such an embodiment forms a circumferentially extending channel. The recess 116 forms a recess shoulder 117. The recess shoulder functions as an engagement surface that can be disposed at the step 335.

[0206] By providing a seal member on the heating element, it is possible to provide a sealing action between the heating element and the article while simplifying the construction and manufacture of the article. Since the article is a consumable while the device is reusable, the system can be simplified and the components of the system can be reduced over the life of the device.

[0207] Although the seal is described in conjunction with a seal member on the heating element, it will be understood that the seal can be spaced from the heating element and / or can comprise one or more seal members spaced from the heating element.

[0208] In the embodiments described with reference to FIGS. 8a - 8g, system 100 includes device 101 and article 110 (not shown in FIGS. 8a - 8g). Receptacle 212 includes seal 300. In each of these embodiments, seal 300 can be a separate element on receptacle 212. In an embodiment, seal 300 is an integral component with receptacle 212 or is formed integrally with receptacle 212. Since this configuration is generally the same as that described above, detailed description is omitted and the features of the above and following embodiments are applicable to each other. In the embodiments described with reference to FIGS. 8a - 8g, configurations such as the shape and dimensions of the seal member are different.

[0209] As shown in FIG. 8a, receptacle 8a includes seal 300. Seal member 350 is on end wall 213 that functions as the base of receptacle 212. Seal member 350 stands upright from the base. Seal member 350 is a face seal. Seal member 350 extends circumferentially around heating element 220. Seal member 350 is spaced apart from heating element 220. Seal member 350 includes a sealing lip 351. Sealing lip 351 extends circumferentially. Seal member 350 is elastic and deforms when contacting the insertion end 112 of the article to form a seal with the insertion end 112. Seal member 350 forms a circumferentially extending seal. In an embodiment, seal member 350 has a different configuration, such as an O - ring. In an embodiment, the seal member is a gasket. Seal member 350 can be at the junction of heating element 220 and receptacle 212. In an embodiment, seal member 350 is a separate element disposed on the surface of end wall 213 as shown in FIG. 8c.

[0210] In an embodiment, seal member 350 is rigid. That is, the seal member is configured to act on the insertion end 112 of article 110 to expand and / or deform the insertion end 112 to form a seal with the insertion end 112. In such a configuration, seal member 350 defines a circumferentially extending ridge.

[0211] As shown in FIG. 8b, the seal 300 includes a seal member 355 on the peripheral wall 214 of the receptacle 212. The seal member 355 protrudes from the peripheral wall 214. The seal member 355 is a lip seal. The seal member 355 surrounds the heating element 220. The seal member 355 is spaced apart from the heating element 220. The seal member 355 is spaced apart from the end wall 213. The seal member 355 includes a sealing lip 356. The sealing lip 356 extends circumferentially. The seal member 356 is configured to contact the outer side 111 of the article 110 and seal at the outer side 111. The seal member 355 is elastic and deforms when contacting the outer side 111 of the article to form a seal with the outer side 111. The seal member 355 forms a circumferentially extending seal.

[0212] In the embodiment shown in FIG. 8b, the seal member 355 is at the distal end of the heating chamber 211. In an embodiment, the position of the seal member 355 can vary. For example, in the embodiment shown in FIG. 8d, the seal member 355 is proximal to the free end 115 of the heating element 220. In an embodiment, the seal member 355 has a different configuration, such as an O-ring as shown in FIG. 8b.

[0213] In an embodiment, the seal member is rigid. That is, the seal member is configured to act on the article 110 to expand and / or deform the article 110 to form a seal with the article 110. One such configuration is shown in FIG. 8e. The seal member 360 includes a peripheral protrusion 361. The seal member 360 of the seal 300 defines a circumferentially extending ridge. The protrusion 361 protrudes radially inward. The outer edge 362 forms the ridge.

[0214] In the embodiment shown in FIG. 8e, the seal member 360 is spaced from the base of the receptacle 212. In an embodiment, referring to FIGS. 8f and 8g for example, the seal member 365 is at the junction of the peripheral wall 214 and the end wall 213. The seal member 365 can have different configurations. As shown in FIG. 8f, the seal member 365 includes a chamfered portion 366. The chamfered portion 366 defines a tapered portion of the heating chamber 211. The tapered portion is at the distal end. As shown in FIG. 8g, the seal member 370 of the seal 300 includes a stepped portion 371. The stepped portion 371 is formed by a shoulder 372 of the receptacle 212. The stepped portion 371 in the embodiment is formed by an insert within the receptacle 212.

[0215] FIG. 2A shows another embodiment. The embodiment of FIG. 2A substantially corresponds to the embodiment of FIG. 2, except that the heating element 220 protrudes from the housing 103. In such an embodiment, the device does not have a receptacle for receiving the heating element. That is, the heating zone 215 is not surrounded or delimited by any other component.

[0216] The housing 103 defines a base 213a from which the heating element 220 protrudes. The heating element 220 stands upright from the base 213a. The heating element 220 is configured to receive at least a portion of the article 110. The heating element 220 is exposed. The term "exposed" is understood to mean that a portion of the feature is not surrounded by another feature such that the feature extends beyond the outer boundary. The heating element 220 cannot be received within the heating chamber. In the device of FIG. 2A, the heating element extends beyond the outer boundary of the device's housing. In the embodiment of FIG. 2A, the entire heating element 220 protruding from the base is not surrounded. In the embodiment, a substantial portion of the heating element 220 is exposed. The heating element 220 is not substantially surrounded or delimited by another component. In such an embodiment, a small portion of the heating element extends within the outer boundary of the device's housing. Optionally, at least 80%, optionally 60%, and optionally 50% of the heating element 220 is exposed.

[0217] The heating configuration in the embodiment is an induction heating configuration. The induction coil may extend within the heating element 220. The heating configuration in the embodiment is a resistive heating configuration.

[0218] FIG. 2A also shows an article 110 for use with any of the embodiments described herein. The article 110 of FIG. 2A is substantially the same as the article 110 of FIG. 2. The article 110 of FIG. 2A can be used with the aerosol generating device 101 of FIG. 2A. The article 110 includes a bore 113. The bore 113 may be omitted.

[0219] Figure 2A also shows the seal 300. The seal 300 is substantially the same as the seal 300 in FIG. 2. The seal 300 is configured to seal the article 110. The seal 300 seals the article 110 at the proximal end 221 of the heating element 220. The seal 300 seals the heating element 220 at the insertion end 112 of the article. That is, a sealing action is formed between the article 110 and the heating element 220. The seal 300 surrounds the heating member 224. The seal 300 includes a chamfered portion 301. The chamfered portion 301 functions as a seal member 305. The chamfered portion 301 forms a tapered end portion of the heating element 220. The chamfered portion 301 includes a contact surface 302. The contact surface 302 extends at an angle inclined with respect to the longitudinal axis.

[0220] In an embodiment, the heating element 220 is exposed, and a part of the heating element is surrounded by an upright rim 230 that stands upright on the base 213a. The heating element 220 projects partially from the housing 103. That is, a part of the heating element 220 projects from the housing 103, and a part of the heating element 220 is surrounded by other components of the device. For example, the housing 103 may include an upright rim 230 that extends around the heating element 220 and is spaced apart from the heating element 220. The upright rim 230 may extend around and be spaced apart from the proximal end 221 of the heating element 220. The upright rim 230 extends from the base 213a. The upright rim 230 extends circumferentially. The upright rim 230 may include a peripheral portion. The upright rim 230 of the base 213a forms a recess 212a. The recess 212a houses the proximal end 221 of the heating element 220. The recess 212a may be configured to receive the end of the article 110. Most of the heating element 220 is not surrounded or partitioned by any other component. The heating zone 215 is not surrounded or partitioned by any other component.

[0221] Several embodiments are described with reference to FIGS. 9a, 9b, 9c, 9e, 9f, and 9g. System 100 includes device 101 and article 110 (not shown in these figures). The base of the housing includes seal 300. In each of these embodiments, seal 300 can be a separate element on the base. In an embodiment, seal 300 is an integral component with the base or is formed integrally with the base. Since this configuration is generally the same as that described above, detailed description is omitted and the features of the above and the following embodiments are applicable to each other. In the embodiments described with reference to FIGS. 9a, 9b, 9c, 9e, 9f, and 9g, configurations such as the shape and dimensions of the seal member are different.

[0222] As shown in FIG. 9a, seal member 350 is on the base. Seal member 350 stands upright from the base. Seal member 350 is a face seal. Seal member 350 extends circumferentially around heating element 220. Seal member 350 is spaced apart from heating element 220. Seal member 350 includes a sealing lip 351. Sealing lip 351 extends circumferentially. Seal member 350 is elastic and deforms when contacting the insertion end 112 (not shown) of the article to form a seal with the insertion end 112. Seal member 350 forms a circumferentially extending seal. In an embodiment, seal member 350 has a different configuration, such as an O-ring. In an embodiment, the seal member is a gasket. Seal member 350 can be at the joint between heating element 220 and base 213a. In an embodiment, seal member 350 is a separate element disposed on the surface of the base as shown in FIG. 9c.

[0223] As shown in FIG. 9b, the seal 300 includes a seal member 355 on the upright rim 230. The seal member 355 projects from the upright rim. The seal member 355 is a lip seal. The seal member 355 surrounds the heating element 220. The seal member 355 is spaced apart from the heating element 220. The seal member 355 is spaced apart from the base. The seal member 355 includes a sealing lip 356. The sealing lip 356 extends circumferentially. The seal member 356 is configured to contact the outer side 111 of the article 110 and seal at the outer side 111. The seal member 355 is elastic and deforms when contacting the outer side 111 of the article to form a seal with the outer side 111. The seal member 355 forms a circumferentially extending seal.

[0224] In an embodiment, the seal member is rigid. That is, the seal member is configured to act on the article 110 to expand and / or deform the article 110 to form a seal with the article 110. One such configuration is shown in FIG. 9e. The seal member 360 of the seal 300 includes a peripheral protrusion 361. The seal member 360 of the seal 300 defines a circumferentially extending ridge. The protrusion 361 projects radially inward. The outer edge 362 forms the ridge.

[0225] In the embodiment shown in FIG. 9e, the seal member 360 is spaced apart from the base surface 213b of the base. In an embodiment, referring to FIGS. 9f and 9g for example, the seal member 365 is at the junction of the upright rim 230 and the base surface 213b. The seal member 365 may have different configurations. As shown in FIG. 9f, the seal member 365 includes a chamfer 366. The chamfer 366 defines a tapered portion of the recess. As shown in FIG. 9g, the seal member 370 of the seal 300 includes a step 371. The step 371 is formed by the shoulder 372 of the upright rim 230. The step 371 in the embodiment is formed by an insert in the recess.

[0226] It will be understood that the exposed heating configuration may be provided in combination with any of the embodiments described above.

[0227] In an embodiment, the article 110 comprises corresponding outer engagement features configured to interact with the seal 300. The outer engagement features can be at least one of a color, a shoulder, a ridge, a protrusion, a recess, a lip, a chamfer, a skirt, a flare portion, a region of increased thickness, a region of reduced thickness, a surface, and an edge.

[0228] Generally, when the seal 300, or at least the seal member of the seal, is spaced from the heating element, it is possible to define an air path between the seal 300 and the heating element 220. For example, an air duct can be defined radially inwardly within the base for the seal 300. By providing the seal 300 radially outside the duct, it is possible to isolate the radially inner portion of the chamber 211 from the radially outer portion of the chamber 211 when an article is received therein. Similarly, by providing a seal spaced axially from the base, it is possible to isolate the proximal portion of the chamber 211 from the distal portion of the chamber 211 when an article is received therein.

[0229] In an embodiment, the seal functions as a retention feature to assist in retaining the article within the device. The seal can function to provide user feedback indicating when the article is correctly positioned within the device. In an embodiment, the system functions to improve the reliability of the system by restricting the insertion of an article that does not form part of the system into the device, either fully or partially.

[0230] In the embodiment described above, the heating component is an induction heating component. In the embodiment, other types of heating components such as resistance heating are used. Since the configuration of the device is substantially as described above, a detailed description is omitted. In such a configuration, the heating assembly 201 includes a resistance heating generator including components for heating a heating element through a resistance heating process. In this case, an electric current is directly applied to the resistance heating component, and the resulting flow of current in the heating component heats the heating component by Joule heating. The resistance heating component includes a resistive material configured to generate heat when an appropriate electric current passes through the resistance heating component, and the heating assembly includes electrical contacts for supplying an electric current to the resistive material.

[0231] In the embodiment, the heating element forms the resistance heating component itself. In the embodiment, the resistance heating component transfers heat to the heating element, for example, by conduction.

[0232] The above embodiments should be understood as exemplary examples of the present invention. Further embodiments of the present invention are conceivable. It should be understood that any feature described in connection with any one embodiment can be used alone or in combination with any other feature described, and can also be used in combination with one or more features of any other embodiment, or any combination of any other embodiments. Furthermore, equivalents and modifications not described above may also be adopted without departing from the scope of the present invention as defined in the appended claims.

Claims

1. An aerosol generating device for generating an aerosol from an aerosol generating material, comprising: a receptacle defining a heating zone configured to receive at least a portion of an article containing the aerosol generating material; a heating element protruding into the heating zone; a seal configured to seal between the article and the heating element; and an aerosol generating device.

2. The aerosol generating device according to claim 1, wherein the seal protrudes within the heating zone.

3. The aerosol generating device according to claim 1, comprising an opening at a proximal end of the receptacle and a distal end, wherein at least a portion of the article is received, and the seal is at the distal end.

4. The aerosol generating device according to claim 1, wherein the seal extends around the heating element.

5. The aerosol generating device according to claim 1, wherein the seal comprises at least one of a lip seal, an O-ring, a face seal, a chamfer, a collar, a shoulder, a gasket, and a protrusion.

6. The aerosol generating device according to claim 1, wherein the seal is configured to seal with the article at a joint between the heating element and the receptacle.

7. The aerosol generating device according to claim 1, wherein the heating element comprises at least a portion of the seal.

8. The aerosol generating device according to claim 7, wherein the heating element comprises a heating member and a seal member of the seal around the heating member.

9. The aerosol generating device according to claim 1, wherein the receptacle comprises at least a portion of the seal.

10. The receptacle comprises a base and a peripheral wall, The aerosol generating device according to claim 9, wherein the base comprises a seal member of the seal.

11. The seal is configured to perform at least one of deforming and expanding at least a portion of the article when the article is received within the heating zone, or The seal is configured to perform at least one of expanding and deforming at least a portion of the article when at least a portion of the article is received within the heating zone, according to claim 1 of the aerosol generating device.

12. An article containing an aerosol generating material, and The aerosol generation device according to any one of claims 1 to 11 and An aerosol generation system comprising: The seal is Provided on at least one of the receptacle and the heating element, Configured to define at least a part of an air path extending through the article, isolated from at least a part of a gap formed between the receptacle and the article. Aerosol generation system.

13. The aerosol generation system according to claim 12, wherein the article comprises a pre-formed bore configured to receive the heating element.

14. The aerosol generation system according to claim 13, wherein the seal is configured to seal on the surface of the bore.

15. The article comprises engagement features configured to engage with the seal, and optionally, The engagement feature is at least one of a bore, a collar, a shoulder, a ridge, a protrusion, a recess, a lip, a chamfer, a region of increased thickness, a region of reduced thickness, a surface and an edge. The aerosol generation system according to claim 12.

16. The aerosol generation system according to claim 12, wherein the seal is configured to engage with a relatively elastic engagement feature of the article.

17. An aerosol generation device for generating an aerosol from an aerosol generation material, comprising: A heating element configured to be received within at least a part of an article containing the aerosol generation material; A base from which the heating element protrudes; A seal configured to seal between the article and the heating element. An aerosol generation device.

18. The aerosol generation device according to claim 17, comprising a heating zone around the heating element configured to at least partially receive the article containing the aerosol generation material.

19. The aerosol generation device according to claim 17, wherein at least a part of the heating element is exposed.

20. The aerosol generation device according to claim 17, wherein the seal is at the proximal end of the heating element.

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