JP2023504997A - Aerosol generating device with baffle - Google Patents

Abstract

The aerosol-generating device (100) includes a heating chamber (108) having a tubular wall (114) extending around a central axis X, the tubular wall defining an interior volume of the heating chamber (108). The heating chamber (108) has an open end (110) and centers a substrate carrier (130) containing an aerosol substrate (132) through the open end (110) within the interior volume of the heating chamber (108). arranged to receive along axis X; A heater (118) extends around the heating chamber (108) to supply heat to the heating chamber (108). The heating chamber 108 also includes a baffle (142) having a sealing surface (143) facing away from the open end (110). The baffle (142) is such that when the substrate carrier (130) is inserted into the heating chamber (108), the sealing surface (143) is directed more towards the central axis X and thus of the substrate carrier (130). It is arranged to deform so that it is biased to face toward the side wall.

Description

The present disclosure relates to an aerosol generating device having baffles for retaining heated gas within a heating chamber. The present disclosure is particularly applicable to portable aerosol generating devices that can be self-contained and cryogenic. Such devices can heat tobacco or other suitable material by conduction, convection and/or radiation rather than by burning to generate an aerosol for inhalation.

The popularity and use of risk-reducing or risk-modifying devices (also known as vaporizers) assist habitual smokers who wish to quit smoking traditional tobacco products such as cigarettes, cigars, cigarillos and cigarettes. has grown rapidly in recent years as a subsidy for Various devices and systems are available for heating or warming an aerosolizable substance, as opposed to burning tobacco in conventional tobacco products.

Commonly available risk reduction or risk modification devices are substrate-heated aerosol-generating devices or heated non-combustion devices. Devices of this type produce an aerosol or vapor by heating an aerosol substrate, typically comprising moist tobacco or other suitable aerosolizable material, to a temperature typically in the range of 100°C to 350°C. generate By heating the aerosol substrate rather than combusting or burning it, it contains the constituents desired by the user, but has less or less toxic and carcinogenic by-products of combustion and burning. An aerosol containing no product is emitted.

In general, it is desirable to rapidly heat the aerosol substrate to a temperature at which the aerosol can be emitted from the aerosol substrate and maintain the aerosol substrate at that temperature without burning. It will be appreciated that the aerosol is emitted from the aerosol substrate into the heating chamber and provided to the user when there is an airflow past the aerosol substrate.

Since this type of aerosol generating device is a portable device, energy consumption is an important design consideration. SUMMARY OF THE INVENTION The present invention aims to address problems with existing devices and to provide an improved aerosol generating device and heating chamber therefor.

According to a first aspect of the present disclosure, an aerosol-generating device, a heating chamber having a tubular wall extending about a central axis, the tubular wall defining an interior volume of the heating chamber, the heating chamber comprising: a heating chamber having an open end and arranged to receive a substrate carrier comprising an aerosol substrate through the open end within an interior volume along a central axis; and a heater for supplying heat to the heating chamber. a heater extending around the chamber and a baffle having a sealing surface facing away from the open end such that when the substrate carrier is inserted into the heating chamber, the sealing surface is directed more toward the central axis to and a baffle arranged to deform so as to be deflected to face toward the side wall of the substrate carrier.

Deflection of the sealing surface may allow an effective seal to be formed against the sidewalls of the substrate carrier. It will be appreciated that the deflection or fold of the sealing surface is typically either toward the internal volume or away from the open end. Deflection or folding of the sealing surface may increase the surface area of the baffle facing the central axis and thus the side walls of the substrate carrier. Furthermore, when the sealing surface is undeflected, for example when no substrate carrier is present, the baffle can extend across the open end of the heating chamber to a greater extent than when the side walls are deflected. For example, the open end can be at least partially blocked by a baffle such that any opening in the baffle is smaller than the cross-sectional length, eg, width, of the substrate carrier. In general, baffles, specifically biased sealing surfaces that cooperate with sidewalls of the substrate carrier when the substrate carrier is inserted, allow heated air to be retained within the heating chamber. This can further improve the efficiency of the aerosol generating device. This is because the energy expended in heating the air in the heating chamber is not wasted by escaping this air from the heating chamber.

The heater can be located outside the heating chamber. The heater may be mounted on the outer surface of the heating chamber, or may form part of the tubular wall of the heating chamber, or may be mounted on the inner surface of the tubular wall of the heating chamber. A heater may be mounted on the surface of the tubular wall facing away from the interior volume of the heating chamber. Heat from an externally located heater is transferred through the tubular wall to the internal volume. More specifically, heat is transferred from an externally located heater through the tubular wall to the interior volume by conduction. Heat can be transferred directly from the tubular wall to the aerosol substrate and/or indirectly from the tubular wall to the aerosol substrate by heating air flowing from the open end toward the aerosol substrate.

The heating chamber may have a base and a tubular wall may extend between the open end and the base. The base may be closed such that air is drawn exclusively into the heating chamber through the open end towards the aerosol substrate, more specifically towards the aerosol substrate between the outer layer of the substrate carrier and the tubular wall. .

Optionally, the distance between the innermost part of the baffle and the central axis is less than the distance between the inner surface of the tubular wall and the central axis. That is, the distance between the portion of the baffle closest to the central axis and the central axis is less than the distance between the inner surface of the tubular wall and the central axis.

Optionally, the baffle is positioned proximate to the open end of the heating chamber. For example, the baffle is closer to the open end than the opposite end of the heating chamber.

Optionally, the baffle is elastically deformable.

Optionally, the baffle is a membrane comprising at least two portions, the at least two portions defined by a slit between the at least two portions, the portions for receiving the substrate support within the heating chamber. , is configured to be deformably divided. In one example, the slit extends radially with respect to the tubular wall. In some examples, there are two or more slits that may intersect each other at the central axis.

Optionally, the baffle has at least one hole configured to allow airflow therethrough.

Optionally, the baffle is positioned at least partially inside the heating chamber.

Optionally, the baffle is located outside the heating chamber and adjacent to or spaced from the open end of the heating chamber.

Optionally, baffles extend from the tubular wall.

Optionally, the baffle (completely) surrounds one/its central axis.

Optionally, the baffle is made from a material having a first thermal conductivity and the tubular wall is made from a material having a second thermal conductivity, the first thermal conductivity being greater than the second thermal conductivity. Less than thermal conductivity.

Optionally, the baffle is an opening defined by the baffle that narrows the interior volume of the heating chamber such that the opening for receiving the substrate carrier through the opening narrows toward the interior volume of the heating chamber. has a taper in the direction away from the

Optionally, the baffle includes first and second baffle elements concentrically positioned and axially spaced from one another along the length of the tubular wall.

Optionally, the baffle comprises an elastomeric material. Optionally, the baffle is made of silicone rubber.

Optionally, the baffle flows from the sealing arrangement to allow airflow between the baffle and the substrate carrier into the interior volume of the heating chamber upon suction through the substrate carrier by a user. It is elastically deformable into a configuration. A sealing configuration can be one in which the baffle is deformed to receive the substrate carrier, and an inflow configuration is an air gap formed between the baffle and the substrate carrier to allow air to flow into the heating chamber. can be

Optionally, the baffle extends further towards the central axis in the sealing configuration than in the inlet configuration.

Optionally, the baffle defines an opening for receiving the substrate carrier therethrough, the opening having a width less than the width of the substrate carrier.

Optionally, the aerosol-generating device further comprises a power supply and control circuitry configured to control the supply of power from the power supply to the heater.

Optionally, the heating chamber includes a base located at an end of the tubular wall opposite the open end, and further optionally, the distance between the baffle and the base of the heating chamber is supported by a substrate carrier. approximately equal to the length of the aerosol substrate to be applied.

According to a second aspect of the present disclosure, a heating chamber having a tubular wall defining an interior volume of the heating chamber and having an open end through which a substrate carrier comprising an aerosol substrate is heated. arranged to receive within the interior volume of the chamber, the tubular wall arranged to define an air gap between the substrate carrier and the tubular wall when the substrate carrier is received in the heating chamber; a heating chamber, and a heater extending around the heating chamber for supplying heat to the heating chamber, substantially sealed against the substrate carrier and positioned to restrict airflow through the open end. An aerosol generating device is provided that includes a baffle that is deformable to receive a substrate carrier within a heating chamber.

Optionally, the baffle flows from the sealing arrangement to allow airflow between the baffle and the substrate carrier into the interior volume of the heating chamber upon suction through the substrate carrier by a user. It is elastically deformable into a configuration. A sealing configuration can be one in which the baffle is deformed to receive the substrate carrier, and an inflow configuration is an air gap formed between the baffle and the substrate carrier to allow air to flow into the heating chamber. can be

Optionally, the substrate carrier is stiffer than the baffle. Thus, in a sealed configuration (when the substrate carrier is received within the heating chamber), the substrate carrier can deform the baffle without itself being deformed by the baffle.

Optionally, the aerosol-generating device of the second aspect may include the optional features described above with respect to the first aspect, particularly regarding the size, location and function of the baffles of the first aspect.

Optionally, in each of the above aspects, the baffle is transformable from a first configuration to a second configuration, in which the substrate carrier is inserted into the heating chamber such that the baffle is A seal can be formed against the substrate carrier.

Optionally, the baffle is further deformable by airflow entering the internal volume of the heating chamber through the open end.

According to a third aspect of the present disclosure there is provided an aerosol generating system comprising the aerosol generating device described above and a substrate carrier. In other words, the aerosol-generating device and substrate carrier may together form one aspect of the present disclosure.

Embodiments of the present disclosure are described below, by way of example only, with reference to the accompanying drawings.

1 is a schematic perspective view of an aerosol generating device according to a first embodiment of the present disclosure; FIG. Figure 2 is a schematic cross-sectional view from the side of the aerosol generating device of Figure 1; 2 is a schematic perspective view of the aerosol-generating device of FIG. 1, wherein the aerosol-generating device is loaded with an aerosol-based substrate carrier; FIG. Figure 2 is a schematic cross-sectional side view of the aerosol-generating device of Figure 1, wherein the aerosol-generating device is loaded with an aerosol-based substrate carrier; 2 is a schematic perspective view of the aerosol-generating device of FIG. 1, with the aerosol-generating device loaded with an aerosol-based substrate carrier; FIG. Figure 2 is a schematic cross-sectional side view of the aerosol-generating device of Figure 1, wherein the aerosol-generating device is loaded with an aerosol-based substrate carrier; 7 is an enlarged schematic cross-sectional view of a portion of the aerosol generating device shown in FIG. 6; FIG. Fig. 2 is a schematic plan view of an aerosol generating device according to a second embodiment of the present disclosure; Figure 9 is a schematic cross-sectional front view of the aerosol-generating device of Figure 8, wherein the aerosol-generating device is loaded with an aerosol-based substrate carrier; Figure 9 is a schematic cross-sectional side view of the aerosol-generating device of Figure 8, perpendicular to the view of Figure 9, with the aerosol-generating device loaded with an aerosol-based substrate carrier; Fig. 10 is a schematic perspective view of an aerosol generating device according to a third embodiment of the present disclosure having a baffle containing holes; 12 is a detailed schematic cross-sectional side view of the aerosol-generating device including the heating chamber of FIG. 11, wherein the aerosol-generating device is loaded with an aerosol-based substrate carrier; FIG. Fig. 10 is a schematic perspective view of an aerosol-generating device according to a fourth embodiment of the present disclosure having a baffle containing a membrane; 14 is a schematic perspective view of the aerosol-generating device of FIG. 13, wherein the aerosol-generating device is loaded with an aerosol-based substrate carrier; FIG. FIG. 10 is a schematic cross-sectional side view of an aerosol-generating device according to a fifth embodiment of the present disclosure, having an alternative airflow configuration; FIG. 10 is a schematic cross-sectional side view of an aerosol-generating device according to a sixth embodiment of the present disclosure having a baffle disposed within the heating chamber; FIG. 10 is a schematic cross-sectional side view of an aerosol generating device according to a seventh embodiment of the present disclosure having a baffle positioned within the heating chamber and away from the open end; FIG. 10 is a schematic cross-sectional side view of an aerosol generating device according to an eighth embodiment of the present disclosure having a baffle with a tapered profile; FIG. 12 is a schematic cross-sectional side view of an aerosol generating device according to a ninth embodiment of the present disclosure having a baffle comprising a first baffle element and a second baffle element; FIG. 10B is a schematic cross-sectional side view of an aerosol-generating device according to a tenth embodiment of the present disclosure, with a cap resting on the aerosol-generating device and a baffle disposed on the cap; Figure 21 is a schematic cross-sectional side view of the aerosol-generating device of Figure 20 with a cap resting on the aerosol-generating device; FIG. 11 is a schematic cross-sectional side view of an aerosol generating device according to an eleventh embodiment of the present disclosure;

First Embodiment Referring to FIGS. 1-7, according to a first embodiment of the present disclosure, an aerosol-generating device 100 includes an outer casing 102 that houses various components of the aerosol-generating device 100 . In the first embodiment, the outer casing 102 has an irregular shape, but any shape can be used so long as it is sized to fit the components described in the various embodiments shown herein. It will be appreciated that it is possible.

The first end 104 of the aerosol-generating device 100 shown at the bottom of each of FIGS. 1-6 is, for convenience, described as the bottom, base or lower end of the aerosol-generating device 100 . The second end 106 of the aerosol-generating device 100 shown at the top of each of FIGS. 1-7 is described as the top or upper end of the aerosol-generating device 100 . During use, the user typically holds the aerosol-generating device 100 with the first end 104 pointing downward and/or distal to the user's mouth, and the second end 106 Oriented upwards and/or proximate to the user's mouth.

The aerosol-generating device 100 has a heating chamber 108 located towards the second end 106 of the aerosol-generating device 100 . Heating chamber 108 opens toward second end 106 of aerosol-generating device 100 . In other words, the heating chamber 108 has an open first end 110 towards the second end 106 of the aerosol generating device 100 . The heating chamber 108 has a side wall 114 extending between an open first end 110 and a base 112 (located at the second end of the heating chamber 108 opposite the open end 110). Sidewall 114 and base 112 are connected to each other. In some embodiments, sidewall 114 and base 112 are formed as a single piece. In a first embodiment, sidewall 114 is tubular. More specifically, side wall 114 is cylindrical extending around central axis X. As shown in FIG. However, in other embodiments the side walls 114 have other suitable shapes, such as tubes with an elliptical or polygonal cross-section extending about the central axis X in each case. In yet another embodiment, sidewall 114 is tapered. An opening in outer casing 102 at second end 106 of aerosol-generating device 100 is aligned with open end 110 to allow insertion of substrate carrier 130 . The heating chamber 108 is kept spaced from the inner surface of the outer casing 102 to prevent heat from flowing into the outer casing 102 . In order to increase the thermal insulation of the heating chamber 108, the heating chamber 108 may also be surrounded by an insulator, for example a fibrous or foam material such as cotton wool, airgel or gas, or alternatively a vacuum insulator. can be provided.

The heating chamber 108 is arranged to receive a substrate carrier 130, also known as a "consumable", as shown in Figures 3-7. Substrate carrier 130 typically includes a prepackaged aerosol substrate 132 such as tobacco or another suitable aerosolizable material provided with an aerosol collection region 134 . Both the aerosol substrate 132 and the aerosol collection region 134 are encased in an outer layer 136 and abut each other at a boundary part way along the substrate carrier 130 . Aerosol substrate 132 is heatable to generate an aerosol for inhalation and is located toward a first end 138 (or “tip”) of substrate carrier 130 . Aerosol substrate 132 extends across the width of substrate carrier 130 within outer layer 136 . In other embodiments, the heating chamber 108 is arranged to receive other forms of aerosol substrate 132, such as chopped loose material or otherwise packaged solid material. The substrate carrier 130 is substantially cylindrical. The aerosol substrate 132 is less than 50% of the length of the substrate carrier 130, preferably 20% to 40%, more preferably 30% to 40%, for example about 36% (of the 55 mm length of the substrate carrier 130). of which is equal to about 20 mm) (along the cylindrical axis). Although not shown in FIGS. 3-7, substrate carrier 130 may further include a filter toward second end 140 .

In a first embodiment, the base 112 of the heating chamber 108 is closed, eg sealed or airtight. That is, the heating chamber 108 is cup-shaped. This ensures that air drawn in through the open first end 110 is prevented from exiting the second end by the base 112 and is instead directed through the aerosol substrate 132 . can. This also allows the user to insert the substrate carrier 130 into the heating chamber 108 to the intended distance and not further.

A heater 118 is mounted on the outer surface of the heating chamber 108 . That is, the heater 118 is mounted on the surface of the tubular sidewall 114 facing away from the interior volume of the heating chamber 108 . This can help protect the heater 118 from damage when the substrate carrier 130 is inserted into the heating chamber 108 . Heater 118 is typically electrically powered. In a first embodiment, the heater 118 is a film heater comprising conductive (eg metal) tracks superimposed on a flexible electrically insulating backing material (such as polyimide).

In a first embodiment, the aerosol-generating device 100 is motorized. That is, it is configured to heat the aerosol substrate 132 using electrical power. For this purpose the aerosol generating device 100 has a power source 120, eg a battery. Power supply 120 is coupled to control circuitry 122 . Control circuit 122 is in turn coupled to heater 118 . A user operates the aerosol generating device 100 using control means (not shown) configured to couple the power source 120 to the heater 118 and decouple the power source 120 from the heater 118 via the control circuit 122 . Manipulate. This in turn heats the heater 118 and provides heat to the heating chamber 108 . When the substrate carrier 130 is present, heat is transferred (usually primarily by conduction or convection) to the aerosol substrate 132 , which the aerosol substrate 132 dissipates when the user inhales the second end 140 of the substrate carrier 130 . release inhaled vapors or aerosols.

1 and 2, the aerosol-generating device 100 is shown without the substrate carrier 130. FIG. In FIGS. 3 and 4, substrate carrier 130 is shown above aerosol-generating device 100 and is not loaded within aerosol-generating device 100 . 5-7 show the substrate carrier 130 loaded into the aerosol generating device 100. FIG.

As shown in FIGS. 1-7, aerosol generating device 100 includes baffle 142 . A baffle 142 is positioned between the opening of the outer casing 102 and the open end 110 of the heating chamber 108 toward the second end 106 of the aerosol-generating device 100 . Baffle 142 may be formed in any suitable manner including, for example, an interference fit, holding baffle 142 in a groove, attaching with adhesive or other bonding methods, and using protrusions or flanges to fasten baffle 142 in place. can be attached in place using any method. As shown in the embodiments below, the baffle 142 can be positioned at different locations, such as on the inner surface of the tubular wall 114 . In such a case, baffle 142 may be placed at this location using the attachment methods described above or any other suitable method. In a first embodiment, baffle 142 is annular in shape with an outer circular shape. The baffle 142 of the first embodiment includes an internal circular shape with an inner perimeter that defines a central opening 144 for receiving the substrate carrier 130 . Accordingly, central opening 144 has a circular shape.

Instead, the central opening 144 is oval or elliptical, such as the baffle 242 of the second embodiment. In other examples, central opening 144 has other cross-sectional shapes, such as squares, triangles, star polygons, or other polygons.

Baffle 142 and central opening 144 are positioned about central axis X such that a central region (eg, geometric center or center of gravity) of a radial cross-section of baffle 142 is aligned with central axis X. In other words, central opening 144 surrounds central axis X. As shown in FIG. In a first embodiment, the central opening 144 is circular and is centered at a point coinciding with the geometric center of the interior volume defined by the tubular wall 114 of the heating chamber 108 . The central opening 144 is thus arranged concentrically with the tubular wall 114 of the heating chamber 108 . Central opening 144 has a width that is less than the width of tubular wall 114 . In a first embodiment, central opening 144 has a diameter smaller than the diameter of tubular wall 114 . In other examples, the minimum width of central opening 144 (measured through the center of gravity of central opening 144) is less than the width of tubular wall 114, for example, if central opening 144 is not circular. Baffle 142 reduces the cross-section of the space in which substrate carrier 130 is received. This is accomplished by providing central opening 144 with a width less than the width of open end 110 . This means that the substrate carrier 130 cannot be inserted into the heating chamber 108 through the central opening 144 without contacting the baffle 142; contact surface 143; As substrate carrier 130 is inserted, tip 138 of substrate carrier 130 contacts sealing surface 143 and pushes sealing surface 143 downward (toward base 112 of heating chamber 108). This downward force moves the sealing surface 143 from its original position (facing away from the base 112 and interior volume of the heating chamber 108) toward the central axis X and Baffle 142 is thus deformed such that it is biased into a sealing position facing toward the outer surface of substrate carrier 130 . This allows the sealing surface 143 to form a seal with the sidewall of the substrate carrier 130 where the sealing surface 143 contacts the substrate carrier 130 .

Baffle 142 is deformable. In particular, baffle 142 is made of a deformable material, such as an elastically deformable material. In other words, baffle 142 is made from a soft or flexible material. Baffle 142 has material properties that include being flexible, pliable, and/or bendable. Baffle 142 is elastically deformable. For example, baffle 142 is made from an elastomeric material, or rubber, or silicone. In particular, baffle 142 is deformable to the extent that it can be deformed by a user inserting substrate carrier 130 into heating chamber 108, as described in more detail below.

This deformation may stretch baffle 142 and allow baffle 142 to better conform to the surface of substrate carrier 130, thereby forming a seal. In addition, elastic or elastomeric materials usually have the property of returning to their original shape when the cause of their deformation is removed. In the present application, this property can help prevent dirt, debris, water, etc. from entering the heating chamber 108 when the substrate carrier 130 is not present. Because, depending on the embodiment, baffle 142 can return to a position in which open end 110 is partially, substantially, or even completely blocked. Baffle 142 is also deformable such that baffle 142 is not damaged by deformation. That is, substrate carrier 130 is pressed against baffle 142 , deforming baffle 142 to allow substrate carrier 130 to pass through baffle 142 and into heating chamber 108 . This causes the baffle 142 to deflect and press against the substrate carrier 130 (when the substrate carrier is inserted) to form a seal and retain the heated air inside the heating chamber 108 . Baffle 142 may be formed from a heat resistant and/or thermally insulating material, such as a heat resistant and/or thermally insulating material suitable for use in medical devices.

Baffle 142 extends further toward central axis X than tubular wall 114 extends. As a result, baffle 142 includes a lip that extends toward central axis X beyond tubular wall 114 . This narrows the cross-sectional area at the second end 106 relative to the cross-sectional area at the open end 110 defined by the tubular wall 114 of the heating chamber 108 to provide a coating effect and the substrate carrier 130 is absent. Even so, it can help keep the interior volume of the heating chamber 108 clean and free of dust, dirt, water, and the like.

Referring to FIGS. 1-4, baffle 142 is in a first configuration when substrate carrier 130 is not inserted into heating chamber 108 . In a first configuration, the baffle 142 is in a rest position, undeformed state, partially covering the open end 110 or edge of the internal volume of the heating chamber 108 and defining a central opening 144 .

5 and 6, when substrate carrier 130 is inserted into heating chamber 108, baffle 142 transforms from a first configuration to a second or sealed configuration. In a second configuration, baffle 142 is in a deformed state and baffle 142 is deflected and bent to allow substrate carrier 130 to be received in heating chamber 108 through central opening 144 . Sealing surface 143 is biased to face more toward central axis X than when baffle 142 is undeflected (e.g., because substrate carrier 130 is not inserted into heating chamber 108). ). In a second configuration, baffle 142 forms a seal against substrate carrier 130 . In the first embodiment, the baffle 142 is annular and the central opening 144 is circular so that the baffle 142 (specifically the sealing surface 143) contacts the circumference of the cylindrical substrate carrier 130 and the cylindrical A complete seal is formed around the perimeter of the shaped substrate carrier 130 . In other embodiments, such as the oblong baffles 242 of the second embodiment, where the baffles 242 contact only a portion of the perimeter of the substrate carrier 130 and form only an intermittent seal against the perimeter of the substrate carrier 130 . In the second configuration, the baffle 142 forms a partial seal against the substrate carrier 130, or is provided with holes 346 in the third embodiment, or in the fourth embodiment, the baffle 442 is , a slit membrane forming a valve is used to seal the entire perimeter of the substrate carrier 130 . In any event, the purpose of baffle 142 in this and other embodiments is to form a seal to dissipate warmed air and steam generated by heating (described in more detail elsewhere). or to prevent the aerosol stream from exiting the heating chamber 108 . This increases efficiency because neither the energy used to heat the air and generate vapor and aerosol nor the vapor (or aerosol) itself is prevented from exiting by the baffle 142 and thus is not wasted. do.

During use, air can flow into the heating chamber 108 from the environment surrounding the aerosol-generating device 100, allowing for inhalation of the aerosol. Otherwise, no air can be inhaled through the aerosol substrate 132 to draw the aerosol toward the user. Additionally, the air enters the heating chamber 108, is heated, and then heats and aerosolizes the aerosol substrate 132 by convection. In a first embodiment, air can enter the heating chamber through open end 110 . However, air is restricted from passing through open end 110 when substrate carrier 130 is loaded into heating chamber 108 and baffle 142 is deformed to form a seal. In the first embodiment, as shown in FIG. 6, air is substantially prevented from flowing through the open end 110 in this condition. In this state, baffle 142 is in a second, sealed configuration.

As the user inhales on substrate carrier 130 , the pressure within heating chamber 108 decreases until it is lower than the pressure of the environment outside heating chamber 108 . That is, there is a pressure differential across the seal formed between baffle 142 and substrate carrier 130 . In the first embodiment, the application of negative pressure is sufficient to further deform the baffle 142 from the second, sealed configuration to the third, inlet configuration. Referring to FIG. 7, baffle 142 is shown in a third, inlet configuration. In a third configuration, baffle 142 is pulled away from substrate carrier 130 by airflow entering open end 110 between baffle 142 and substrate carrier 130 . That is, baffle 142 deforms further toward the interior volume of heating chamber 108 and base 112 . In particular, baffle 142 deforms further away from central axis X and toward tubular wall 114 , breaking the seal between sealing surface 143 and the substrate carrier, thereby causing the exterior of aerosol-generating device 100 to collapse. to replace the heated air drawn through the substrate carrier 130 by the user. In other words, the deformation causes the central opening 144 to widen further, equalizing the pressure differential. In a third configuration, sufficient air may be supplied to the heating chamber 108 to heat and cause vaporization of the aerosol substrate 132 . Air is drawn into the heating chamber 108 as the user inhales the aerosol in the direction of arrow A shown in FIG. The air flow between baffle 142 and substrate carrier 130 as baffle 142 is deformed to the third configuration and allows air to flow into heating chamber 108 when a user applies suction is shown in FIG. Indicated by arrow B at 7.

When the user stops inhaling on substrate carrier 130, no more pressure is applied and baffle 142 resiliently returns to the second configuration. That is, when a user draws through substrate carrier 130, baffle 142 is elastically deformable from the second configuration to the third configuration. This allows airflow to temporarily pass through open end 110 while baffle 142 is in the third configuration when suction is applied. Thus, when the user is not inhaling at the substrate carrier 130, the baffle 142 maintains a seal against the substrate carrier 130, between inhalations (informally called puffs) or when the aerosol-generating device 100 is in use. , retaining heat and steam while the substrate carrier 130 remains inserted. This can increase heat and vapor retention between puffs as well as provide insulation to provide faster initial heating.

In a second configuration, baffle 142 faces toward base 112 of heating chamber 108 (as shown in FIG. 6). For example, this placement of baffle 142 helps prevent backflow (eg, air, gas, vapor and/or aerosol flow) from open end 110 when baffle 142 returns to the second configuration. This can help prevent positive pressure differentials that cause the interior of the heating chamber 108 to be at a higher pressure than the pressure of the environment outside the aerosol-generating device 100 . For example, a positive pressure differential can occur when fresh, cold air is drawn from outside the aerosol-generating device 100 and subsequently heated to increase the pressure.

Thus, baffle 142 restricts unwanted airflow of aerosols from heating chamber 108 while allowing airflow into heating chamber 108 due to user suction. This forms a one-way valve that the user can open by inhaling on the aerosol-generating device 100 . The degree of deformability or flexibility of the baffle 142 is necessary to ensure an adequate seal to prevent the aerosol from escaping and the substrate carrier 130 to be placed in the heating chamber for the effects shown herein. It is chosen as a compromise between allowing sufficient airflow into the heating chamber 108 to be easy enough for the user to insert it into 108 without effort.

In addition, draw resistance is a property that affects user satisfaction. Inhalation resistance is the amount of inhalation required to provide sufficient inhalation of the aerosol. If the suction resistance is too great, it will be difficult to inhale and uncomfortable for the user. It is desirable to mimic the draw resistance of a cigarette to provide a comfortable and familiar experience.

Suction resistance varies the degree of flexibility of the baffle 142 and the pressure drop required to deform the baffle 142 into the third configuration away from the substrate carrier 130 to allow air flow. can be adjusted by selecting Preferably, the pressure loss is chosen to be in the range of 20-120 mm water column, more preferably 60-100 mm water column. In units of Pascals, the pressure drop is preferably selected to be in the range of about 200-1200Pa, more preferably about 600-1000Pa.

The substrate carrier 130 is inserted into the heating chamber 108 with the first end 138 of the substrate carrier 130 toward which the aerosol substrate 132 is located oriented to enter the heating chamber 108 . The substrate carrier 130 is pushed until the first end 138 of the substrate carrier 130 rests on the base 112 of the heating chamber 108 , i.e. until the substrate carrier 130 can no longer be inserted into the heating chamber 108 . , is inserted into the heating chamber 108 . In other embodiments, first end 138 of substrate carrier 130 does not rest on base 112 . This allows air to flow between base 112 and first end 138 . In one embodiment, such as the eleventh embodiment, the first end 138 rests on a pedestal 1180 within the base 112 , which allows air to flow over a portion of the first end 138 . Preferably, it is raised to contact the central portion of the first end 138 of the substrate carrier 130 .

5-7 that when the substrate carrier 130 is inserted as deep as possible into the heating chamber 108, only a portion of the length of the substrate carrier 130 is inside the heating chamber 108. . The remainder of the length of substrate carrier 130 protrudes from heating chamber 108 . At least a remaining portion of the length of substrate carrier 130 also protrudes from second end 106 of aerosol-generating device 100 . In other embodiments, all or substantially all of the substrate carrier 130 is contained within the aerosol generating device 100 such that no portion, or substantially no portion, of the substrate carrier 130 protrudes from the aerosol generating device 100. can be

With the substrate carrier 130 inserted into the heating chamber 108 , the aerosol substrate 132 within the substrate carrier 130 is positioned at least partially within the heating chamber 108 . In a first embodiment, the aerosol substrate 132 resides entirely within the heating chamber 108 . This ensures that the entire aerosol substrate 132 can be heated. In a first embodiment, the aerosol substrate 132 is arranged to extend above the heater 118 . That is, the entire length of heater 118 along the axial length of heating chamber 108 overlaps aerosol substrate 132 . In some embodiments, a prepackaged quantity of aerosol substrate 132 in substrate carrier 130 is distributed from a first end 138 of substrate carrier 130 along substrate carrier 130 to the base of heating chamber 108 . It is configured to extend a distance approximately (or more precisely) equal to the interior height of the heating chamber 108 from 112 to the open end 110 . This is effectively the same length as the tubular wall 114 of the heating chamber 108 inside the heating chamber 108 . For example, when the substrate carrier 130 is inserted into the heating chamber 108 , the interface between the aerosol substrate 132 and the aerosol collection region 134 can be substantially radially aligned with the baffle 142 . That is, the seal between baffle 142 and substrate carrier 130 is aligned with the edge of aerosol substrate 132 . This can provide additional heat and vapor retention at desired locations within the heating chamber 108 , such as within the aerosol substrate 132 .

With the substrate carrier 130 loaded into the aerosol-generating device 100 , the user switches on the aerosol-generating device 100 using the user-operable button 126 . Power from power supply 120 is thereby supplied to heater 118 via (and under the control of) control circuit 122 . Heater 118 conducts heat through tubular wall 114 of heating chamber 108 to aerosol substrate 132, heating at least a portion of aerosol substrate 132 to a temperature at which aerosol or vapor can begin to be emitted.

Once the aerosol substrate 132 is heated to a temperature at which an aerosol begins to be generated, a user can inhale the vapor by drawing the vapor through the second end 140 of the substrate carrier 130 . The user may be alerted that vapor has formed, for example, through the use of visual or audio cues. Such cues may be determined by temperature measurements or time measurements, for example. That is, the vapor is generated from the aerosol substrate 132 located at the first end 138 of the substrate carrier 130 within the heating chamber 108 , and along the length of the substrate carrier 130 , the aerosol within the substrate carrier 130 . It is drawn through the collection region 134 to the second end 140 of the substrate carrier 130 where it enters the user's mouth. This aerosol flow is indicated by arrow A in FIG.

When the user inhales air and/or vapor in the direction of arrow A in FIG. will be understood. This action also draws ambient air into the heating chamber 108 from the surrounding environment of the aerosol-generating device 100 and between the substrate carrier 130 and a portion of the baffle 142 (through the flow path indicated by arrow B in FIG. 7). The air drawn into the heating chamber 108 is then heated and drawn into the substrate carrier 130 . The heated air heats the aerosol substrate 132 by convection to generate an aerosol. More specifically, in the first embodiment, air enters heating chamber 108 through a space provided between tubular wall 114 of heating chamber 108 and outer layer 136 of substrate carrier 130 . For this purpose, the outer diameter of substrate carrier 130 is smaller than the inner diameter of heating chamber 108 . More specifically, in the first embodiment, heating chamber 108 has an inner diameter of 10 mm or less, preferably 8 mm or less, and most preferably about 7.6 mm. This allows the substrate carrier 130 to have a diameter of approximately 7.0 mm (±0.1 mm). This corresponds to a circumference of 21 mm to 22 mm or more preferably 21.75 mm. In other words, the spacing between substrate carrier 130 and tubular wall 114 of heating chamber 108 is most preferably about 0.1 mm. In other variations, the spacing is at least 0.2 mm, and in some examples up to 0.3 mm. Note that Figures 1-7 are not necessarily to scale. In some examples, the spacing between substrate carrier 130 and tubular wall 114 may be greater to allow space for deformation of baffle 142 . In other examples, the width of tubular wall 114 widens toward open end 110 to provide a recess or taper to allow baffle 142 to deform downward into the interior volume of heating chamber 108 . . In such instances, tubular wall 114 narrows toward the interior volume of heating chamber 108 or toward base 112 to provide more efficient heating of aerosol substrate 132 .

A single inhalation by the user is commonly referred to as a "puff". In some situations, it is desirable to mimic the cigarette smoking experience. This means that the aerosol generating device 100 is typically capable of holding enough aerosol substrate 132 to provide a predetermined number of puffs, eg 10-15 puffs.

1-7 and the accompanying description, according to a first embodiment, an aerosol-generating device 100 is provided that includes a heating chamber 108 having a tubular wall 114 extending around a central axis X. As shown in FIG. A tubular wall 114 defines an interior volume of a heating chamber 108, which has an open end 110 for transferring a substrate carrier 130 containing an aerosol substrate 132 into the interior volume through the open end 110 along a central axis X. arranged to receive along A heater 118 extends around the heating chamber 108 to supply heat to the heating chamber 108 . A baffle 142 is provided having a sealing surface 143 facing away from the open end 110 such that when the substrate carrier 130 is inserted into the heating chamber 108, the sealing surface 143 is positioned more toward the central axis X. and thus deflected to face the side walls of the substrate carrier 130 . Sealing surface 143 deflected in this manner presses sealing surface 143 against substrate carrier 130 to form a seal. This seal can retain the heated air within the heating chamber 108, thereby further reducing the energy expended in heating the air within the heating chamber 108 as the air escapes from the heating chamber 108. The efficiency of the aerosol generating device 100 can be improved because there is no waste. Baffle 142 is configured to restrict air flow through open end 110 of heating chamber 108 . When substrate carrier 130 is inserted into heating chamber 108 as described above, baffle 142 deforms to allow substrate carrier 130 to be inserted. Baffle 142 remains deformed while substrate carrier 130 is held within heating chamber 108 . The baffle 142 is elastically deformable, but not sufficiently elastically deformable to push the substrate carrier 130 back out of the heating chamber 108 when the user stops pushing the substrate carrier 130 into the heating chamber 108 . .

When substrate carrier 130 is inserted into heating chamber 108 and baffle 142 is deformed, baffle 142 restricts the flow of air through open end 110 of heating chamber 108 . Baffle 142 forms at least a partial seal with substrate carrier 130 . In a first embodiment, the central opening 144 of the baffle 142 is shaped complementary to the substrate carrier 130 (ie circular) such that a complete seal is formed around the perimeter of the substrate carrier 130 . Different shaped openings 144 can be used to adapt the aerosol generating device 100 to different shaped substrate carriers 130 .

In addition, the elastic force exerted by the baffle 142 provides a centering effect in the sense that the forces from both sides of the deformed baffle 142 cancel each other to keep the substrate carrier 130 centered in the opening 144 . If the central opening 144 itself is centered with respect to the central axis X, the net effect is to keep the substrate carrier 130 centered within the heating chamber 108 . This creates an air gap between the substrate carrier 130 and the tubular wall 114, the air gap being substantially constant all around the substrate carrier, which means that the substrate carrier 130 is evenly heated. and can help ensure that the draw resistance is predictable and constant.

Once the user has finished using the substrate carrier 130, the substrate carrier 130 may be removed after the user determines that the aerosol substrate 132 has been exhausted, for example, after a predetermined number of puffs have been made, or after the substrate has been used. After the aerosol-generating device 100 determines that the carrier 130 has been consumed, it is removed from the aerosol-generating device 100 . Baffle 142 is deformable to allow removal of substrate carrier 130 from heating chamber 108 . Therefore, baffle 142 is elastically deformable. The baffle 142 is deformable back to its original undeformed position (ie, first configuration) and returns to its original position when the substrate carrier 130 is removed. Baffle 142 is configured to allow removal of substrate carrier 130 without altering substrate carrier 130 . That is, the baffle 142 does not tear off the outer layer 136 of the substrate carrier or cause the aerosol substrate 132 to be removed from the substrate carrier 130 . Moreover, the deformation does not damage the baffle 142, and the baffle 142 returns to its original position (eg, as in FIG. 2) when the substrate carrier 130 is removed.
Second Embodiment An aerosol generating device 100 according to a second embodiment will now be described with reference to FIGS. do. The aerosol generating device 100 of the second embodiment is identical and has similar features to the aerosol generating device 100 of the first embodiment described with reference to FIGS. 1-7, except as described below. The same reference numbers are used to refer to Figures 8-10 show an aerosol generating device 100 that is identical to the aerosol generating device 100 of the first embodiment, except as described below.

As can be seen from FIG. 8, the baffle 242 of the second embodiment differs from the baffle 142 of the first embodiment. The baffle 242 of the second embodiment has a stadium-shaped central opening 244 instead of the circular shape of the first embodiment. Sealing surface 243 is located on the outwardly facing portion of baffle 242 . In a second embodiment, the baffle 242 is substantially annular in shape with an outer circular shape with an outer circumference contacting the inner surface of the outer casing 102 . The baffle 242 of the second embodiment includes an internal stadium shape having an inner perimeter that defines a central opening 244 . Thus, central opening 244 has a stadium shape. In other examples, the central aperture 244 is oval, particularly oval with near-zero eccentricity. In such a case, the central opening 244 is substantially circular, but the circumference deviates from a perfect circle, with some portions being closer to the central axis X than other portions.

Instead, central opening 244 is oval. In other embodiments, baffle 242 may be an oval ring having an inner oval and an outer oval. In such instances, outer casing 102 may also be oval in cross-section to match baffle 242 .

In some embodiments, baffle 242 has a narrow portion 242a and a wide portion 242b, which respectively define the minimum and maximum dimensions of central opening 244 (each diameter being measured through the center of gravity of central aperture 244). Narrow portion 242a extends toward central axis X substantially along axis Y shown in FIG. Axis Y is perpendicular to central axis X and is arranged parallel to the width of baffle 242 , which in the second embodiment is also arranged parallel to base 112 . Wide portion 242b extends toward central axis X substantially along axis Z shown in FIG. Axis Z is perpendicular to both central axis X and axis Y and is arranged parallel to the width of baffle 242, which in a second embodiment is also arranged parallel to base 112. .

In use, narrow portion 242a is configured to contact substrate carrier 130 when substrate carrier 130 is inserted into heating chamber 108, as described below, while narrow portion 242a is configured to contact substrate carrier 130 as shown. , wide portion 242 b does not contact substrate carrier 130 . This can be accomplished, for example, by providing a baffle with a narrower portion 242a that is narrower than the substrate carrier 130. FIG. When the substrate carrier 130 is inserted into the heating chamber 108 , the sealing surface 243 , particularly the outward facing portion of the baffle 242 , contacts the tip 134 causing the sealing surface to face downward and deform the baffle 242 . As such, the sealing surface faces toward the substrate carrier 130 (and thus toward the central axis X) and forms a seal against the substrate carrier 130 .

As shown in FIG. 8, a space is provided between a portion of the baffle 242 and the substrate carrier 130 for airflow to the heating chamber 108 . In FIG. 8, the difference in size between narrow portion 242a and wide portion 242b is exaggerated to emphasize this effect. By providing narrow portion 242a and wide portion 242b, a partial seal may be provided between baffle 242 and substrate carrier 130 (at narrow portion 242a), as described in more detail below. In some cases, both the narrow portion 242a and the wide portion 242b may contact the substrate carrier 130 and form a seal against the substrate carrier 130, but the strength of the seal at the narrow portion 242a and the local deflection of the baffle 242 may increase. can be different compared to wide portion 242b.

In an alternative embodiment, the baffle 242 may have a square central opening 244 that receives a substrate carrier 130 of circular cross-section, for example, contacting and sealing the substrate carrier 130 on the square sides, while the square opening 242 is closed. provide space and air flow in the corners of the Thus, the dimension between opposite sides of the square corresponds to narrow portion 242a, and the dimension between diagonally opposed corners of the square corresponds to wide portion 242b. In another example, baffle 242 may have a rectangular central opening 244, optionally with rounded corners. For example, baffle 242 may have an oblong central opening 244 .

FIG. 9 shows a cross-sectional view of the aerosol-generating device 100 of the second embodiment in the plane formed by the axes X and Y showing the narrow portion 242a of the baffle 242 deformed by the substrate carrier 130. In some examples, widened portion 242b is configured not to contact substrate carrier 130 . Therefore, widened portion 242b is not directly deformed by substrate carrier 130 . However, the tension in baffle 242 due to deforming narrow portion 242a also deforms wide portion 242b, but to a lesser extent. Thus, in some instances of the second embodiment, the entire inner perimeter of baffle 242 may deform.

FIG. 10 shows a cross-sectional view of baffle 242 in the plane formed by axis X and axis Z showing wide portion 242 b of baffle 242 that does not contact substrate carrier 130 . Therefore, baffle 242 does not form a seal with substrate carrier 130 at wide portion 242b. Overall, baffle 242 forms a partial seal with substrate carrier 130 . That is, baffle 242 is sealed at narrow portion 242a but not at wide portion 242b.

A partial seal is formed between the narrow portion 242 a and the surface of the substrate carrier 130 while the wide portion 242 b of the baffle 242 does not contact the substrate carrier 130 and the baffle 242 and the substrate carrier 130 are separated from each other. A narrow portion 242a of baffle 242 is formed by contacting and being deformed by substrate carrier 130 to provide a space therebetween. This is by providing an oblong central opening 244 and a cylindrical substrate carrier 130 . A partial seal gap is configured between the baffle 242 and the substrate carrier 130 to provide an air flow path from outside the aerosol generating device 100 to the heating chamber 108 . The air flow path is indicated by arrow B in FIG.

Providing a portion of the baffle 242 that seals against the substrate carrier 130 improves heat and vapor retention within the heating chamber 108 while allowing air for intake into the heating chamber 108 through the air flow path. be able to. Accordingly, the shape and size of central opening 244 is between a portion of baffle 242 and substrate support 130 to balance heat and vapor retention with ease of drawing fresh air into heating chamber 108 . It can be selected to adjust the size of the existing space.

Providing a partial seal instead of a full seal also means that airflow can be supplied to the heating chamber 108 without further deforming the baffle 242 into a third configuration such as in the first embodiment. This means that the baffle 242 can be made from a less deformable material.
Third Embodiment An aerosol generating device according to a third embodiment will now be described with reference to Figures 11 and 12 . The aerosol-generating device 100 of the third embodiment is identical and has similar features to the aerosol-generating device 100 of the first embodiment described with reference to FIGS. 1-7, except as described below. The same reference numbers are used to refer to In particular, FIGS. 11 and 12 show detailed views of heating chamber 108 . The aerosol generating device 100 of the third embodiment has an alternative baffle 342 different from the baffles 142; 242 of the first and second embodiments.

More particularly, referring to FIGS. 11 and 12, the baffle 342 is similar to the baffle 142 of the first embodiment, but instead includes four holes 346 and includes a rim 348. As shown in FIG. Other variations of the third embodiment include one or more other numbers of holes 346, including, for example, 2, 3, 5, 6, 7 or 8 holes 346 or possibly more. It may have holes 342 . Holes 346 may also be referred to as holes, openings or gaps. In the third embodiment, the holes 346 have circular cross-sections, but other shapes such as square cross-sections are also envisioned, and different holes 346 may have different shaped cross-sections.

Baffle 342 has an annular shape and a rim 348 is disposed around the perimeter of baffle 342 . Rim 348 is a torus and cooperates with outer casing 102 . That is, the outer circumference of rim 348 is equal to the inner circumference of outer casing 102 . Rim 348 has an inner perimeter attached to baffle 342 . Sealing surface 343 is located toward the inner edge of baffle 342 .

The rim 348 may provide additional support to the baffle 342 and allow the baffle 342 to be thinner and more flexible while maintaining structure. Rim 348 is made from a sturdy material to support baffle 342 and maintain cooperation between heating chamber 108 and outer casing 102 . As described above with reference to the first and second embodiments, baffle 342 may be more flexible than rim 348 to allow deformation. In some embodiments, a baffle 342 with holes 346 may be provided without a rim 348 in place of the baffle 242 of the second embodiment, for example. It should also be appreciated that the rim 348 may comprise other embodiments of baffles, such as the non-perforated baffle 142 according to the first embodiment.

In the third embodiment, baffle 342 is configured to extend from rim 348 toward central axis X. As shown in FIG. In the third embodiment, the baffles 342 extend towards the central axis X by the same amount as in the first embodiment. Therefore, the total width of the annular portion of the baffle 342 is smaller than the baffle 142 of the first embodiment. The interface between baffle 342 and rim 348 is positioned in axial alignment with tubular wall 114 such that baffle 342 covers a portion of the interior volume of heating chamber 108 at open end 110 . there is Accordingly, rim 348 does not overlap the interior volume of heating chamber 108 . Holes 346 extend through the entire thickness of baffle 342 and allow air to flow within baffle 342 in a controlled manner.

Apertures 346 are arranged around the annulus of baffle 342 . In the third embodiment, the holes 346 are evenly distributed around the annulus of the baffle 342 such that there is equal separation between each adjacent hole 346 . Providing a uniform spacing between the holes 346 allows for uniform airflow around the substrate carrier 130, as described below. Hole 346 has a diameter that is less than the distance between the inner diameter of baffle 342 closest to central axis X and tubular wall 114 . Baffle 342 also includes a central opening 344 similar to central opening 144 of the first embodiment. Apertures 346 are positioned toward the inner periphery of annular baffle 342 , ie toward central opening 344 . Since baffle 342 is located closer to central axis X than tubular wall 114 is relative to central axis X, holes 346 are located closer to central axis X than tubular wall 114 is relative to central axis X. ing. This means that the bore 346 is located radially between the tubular wall 114 and the central axis X. As shown in FIG. As a result, the holes 346 are axially aligned with the internal volume of the heating chamber 108 . Thus, the distance between opposing holes 346 on opposite sides of baffle 342 is less than the width of tubular wall 114 . This is because the holes 346 are positioned to provide fluid communication between the interior volume of the heating chamber 108 via the open end 110 and the external environment beyond the second end 106 of the aerosol generating device 100. means In other words, holes 346 provide additional openings between the interior volume of heating chamber 108 and the outside environment in addition to central opening 344 . When the baffle 342 has a wider outer diameter than the tubular wall 114, such as the baffle 142 of the first embodiment, the holes 346 are defined as described above to allow fluid communication between the interior volume of the heating chamber 108 and the external environment. , on the portion of the baffle 342 between the tubular wall 114 and the central axis X. As shown in FIG.

Referring to FIG. 12, when the user inserts the substrate carrier 130 into the heating chamber 108 , the tip 134 contacts the sealing surface 343 and deforms the baffle 342 to form a seal against the substrate carrier 130 . This causes the sealing surface to deflect and face more toward the substrate carrier 130 . This can be considered a second configuration, as described above in the first embodiment. In a third embodiment, holes 346 are arranged such that holes 346 provide fluid communication between the interior volume of heating chamber 108 and the outside environment even when central opening 344 is sealed by substrate carrier 130 . , is configured to remain open throughout deformation.

As shown in FIG. 12, when the substrate carrier 130 is inserted, the holes 346 provide an air flow path through the apertures and thus the open end 110, and the baffles 342 otherwise form a seal. When the user inhales the aerosol in the direction of arrow A in FIG. 12, this draws air into the heating chamber 108 . Airflow through holes 346 in baffle 342 is indicated by arrow B in FIG. In this way, baffle 342 need not be transformable to the third configuration as in the first embodiment to allow air flow. 346 because air flow is instead provided through the holes 346 .

Holes 346 can change the draw resistance. This means that more air can be drawn into the heating chamber 108 more easily. The size, number and location of holes 346 may be selected to balance draw resistance and potential heat or vapor loss associated with having such holes 346 . Preferably, the pressure loss is chosen to be in the range of 20-120 mm water column, more preferably 60-100 mm water column. In units of Pascals, the pressure drop is preferably selected to be in the range of about 200-1200Pa, more preferably about 600-1000Pa.

In a third embodiment, holes 346 are holes having a constant diameter through the thickness of baffle 342 . That is, the hole 346 in the upper surface of the baffle 342 located closest to the second end 106 of the aerosol-generating device 100 was located on the opposite side of the baffle 342 closest to the base 112 of the heating chamber 108. , on the underside of baffle 342 . In other embodiments, holes 346 have widths that vary across the thickness of baffle 342 . As the baffle 342 deforms to the second configuration, in some examples, the size of the holes 346 decreases, particularly at the lower surface of the baffle 342, and if the portion of the baffle 342 that contains the holes 346 is significantly deformed, the flow through the holes 346 may decrease. Restrict air flow. In some embodiments, the holes 346 are such that even when the baffles 342 are deformed to the second configuration by receiving the substrate carrier 130, the holes 346 are still sufficiently open to allow air flow. sized to ensure In some embodiments, this includes locating the holes 346 away from the central opening 344 to prevent significant deformation of the portion of the baffle 342 that contains the holes 346, or in alternative embodiments, such as This includes providing a hole 346 wide enough to prevent closing when the hole 346 is deformed, including providing a wider hole 346 in the lower surface of the baffle 342 that closes when deformed.

Further, in some embodiments, the baffle 342 is deformable to a third configuration similar to the second embodiment, in which the holes 346 are positioned in the third configuration when the user applies suction. In addition to temporarily breaking the seal in configuration, it further improves draw resistance.

In some instances of the third embodiment, hole 346 may be fitted with a one-way flow valve, such as a rubber slit valve or an artificial variation of the one-way flow valve found in human veins. This may further help retain heat and aerosol within the heating chamber 108 .

Although shown in FIGS. 11 and 12 only as a heating chamber 108, the third embodiment could easily be formed as part of a complete aerosol generating device 100, for example in place of the heating chamber 108 of FIG. .

It should be appreciated that the holes 346 in the baffle 342 in the third embodiment can be readily adapted to other embodiments, for example embodiments having alternative baffles, such as the baffle 442 of the fourth embodiment. .
Fourth Embodiment Here, a fourth embodiment will be described with reference to FIGS. 13 and 14. FIG. The fourth embodiment aerosol generating device 100 is identical and has similar features to the first embodiment aerosol generating device 100 described with reference to FIGS. 1-7, except as described below. The same reference numbers are used to refer to The aerosol generating device 100 of the fourth embodiment has an alternative baffle 442 that differs from the baffle 142 of the first embodiment.

More particularly, FIGS. 13 and 14 show detailed schematic perspective views of heating chamber 108 with baffle 442 highlighted. Referring to FIG. 13, baffle 442 has a rim 448 and baffle 442 is attached to the inner circumference of rim 448 . Baffle 442 is shown in a first configuration in which baffle 442 is not deformed and substrate carrier 130 is not loaded into heating chamber 108 . Baffle 442 includes a membrane. Alternatively, baffle 442 may be considered a septum or valve that separates the interior volume of heating chamber 108 from the outside environment.

Rim 448 is identical to rim 342 of the third embodiment. Rim 448 has an inner perimeter attached to baffle 442 . In some embodiments, a fourth embodiment baffle 442 having segments 450 as described below may be provided without the rim 448 in place of the first embodiment baffle 142, for example. It should also be appreciated that the rim 448 may comprise other embodiments of baffles such as the baffle 142 according to the first embodiment. For example, the baffle 442 may extend into the outer casing 102, like the baffle 142 of the first embodiment, or the outer circumference of the baffle 442 may extend to a sixth region where the baffles 642, 742 are located within the heating chamber 108. Or it can be attached to the tubular wall 114 as in the seventh embodiment.

Baffle 442 is positioned about central axis X. FIG. Baffle 442 includes multiple segments 450 such that the membrane of baffle 442 is divided into multiple segments 450 . Referring to FIG. 13, baffle 442 includes four segments 450 . Each segment 450 is generally a circular sector. A circular sector is defined as a portion of a solid circle (i.e., disk) bounded by two radial sides separated by an angle at the center of the circle; It has an arc length that is fractional. In the fourth embodiment, each segment 450 includes two sides, each of the two sides defining a boundary of segment 450 . As shown in FIG. 13, each of these sides generally defines the radius of baffle 442, but may have a length slightly less than the radius. The baffle 442 is divided into four equal sized round sector segments 450, each segment 450 being approximately a quarter circle. That is, the central angle between the two radial sides of each segment 450 is approximately 90°. Geometrically, this shape is often called a quadrant. It should be appreciated that this embodiment can be easily extrapolated to another number of segments 450, such as, for example, six segments 450 each having a central angle of about 60°.

The portion of each segment 450 toward the center of baffle 442 is triangular. The shape of segment 450 may be described as petal-like, leaflet-like, or leaf-tip-like. Baffle 442 is sometimes described as a four-leaf tip having four leaf tip segments 450, or a four-leaf tip. Otherwise, the segment 450 may be described as a flap while the membrane of the baffle 442 as a whole is described as the cover.

Segment 450 extends toward central axis X. As shown in FIG. Each segment 450 is a rounded sector with outer ends defining an arc attached to rim 448, where segment 450 narrows triangularly toward central axis X and reaches a point at central axis X. Each segment 450 extends substantially to a point that intersects central axis X such that each segment 450 meets at central axis X, which coincides with the geometric center of baffle 442 . A sealing surface 443 of baffle 442 is located at the triangular portion of each flap.

Segment 450 is attached to rim 448 at the outer periphery of baffle 442 . In a fourth embodiment, the segments 450 are joined together towards the periphery. That is, segment 450 is continuous. Segment 450 is thus joined to rim 448 around its entire perimeter. In other embodiments, the segments 450 are not joined together and the segments 450 are separated and separate around the rim 448 such that the segments 450 are not joined to the rim 448 around the entire perimeter. and optionally separated and not contiguous with each other.

Baffle 442 includes slits 452 disposed between segments 450 . Referring to FIG. 13, the slits 452 are cruciformly arranged, thereby dividing the baffle 442 into four individual segments 450 . More specifically, slit 452 is formed from two intersecting slits that intersect at the center of baffle 442 . Slit 452 extends the full height (or thickness) of baffle 442 . Slits 452 partially separate each segment 450 from each other. In particular, slits 452 are positioned between radial sides of adjacent segments 450 . Slits 452 extend from the center of the circular membrane of baffle 442 (ie, central axis X) along each radial side of each segment 450 toward the outer periphery. However, the slit 452 does not extend all the way to the perimeter of the membrane of the baffle 442 . That is, slits 452 define a separation between adjacent segments 450 along a portion of the radius of baffle 442 from central axis X. Adjacent segments 450 are thus joined together toward the periphery where slit 452 does not extend. Thus, segment 450 is continuous toward the perimeter, but discontinuous toward the center of baffle 442 .

Generally, the segments 450 can be considered attached together at their respective arc lengths and separated at their radial sides. Segments 450 are thus individually movable in positions separated from each other by slits 452 . Since the baffle 442 is deformable, each segment 450 is deformable and unrestrained by being attached to other segments 450 . This allows each segment 450 to individually deform and deflect upon receiving the substrate carrier 130, as described below.

In a fourth embodiment, slits 452 separate segments 450 but are configured so as not to provide a large gap between them when substrate carrier 130 is not present. Segments 450 are arranged to contact adjacent segments 450 even though they are not joined together. Further, when the points of segments 450 meet at the center of baffle 442, segments 450 touch each other. Thus, in the first configuration, the baffle 442 can provide complete coverage and help keep the heating chamber 108 dust-free when the aerosol-generating device 100 is not in use. Thus, the fourth embodiment provides a seal (eg, an airtight seal) even in the first configuration without the substrate carrier 130 inserted. However, in some examples, due to the manufacturing process, slits 452 have a width large enough to prevent adjacent segments 450 from touching, for example, when material is cut to form slits 452. Sometimes.

There is no central opening defined by baffle 442 , unlike central opening 144 of the first embodiment, because segments 450 contact but are not joined at the center of baffle 442 . Therefore, there are no openings or gaps between segments 450 at central axis X. FIG. Note that in some cases, due to manufacturing tolerances, there may be small gaps where segments 450 meet. However, it is desirable that the segments 450 meet to provide the baffle 442 over the circular area of the baffle 442 . Preferably there are no openings between segments 450 at the center. Any opening is smaller than the width of the substrate carrier 130 . The ability to provide a baffle 442 without openings improves the coating effect of the baffle 442 and keeps the interior of the heating chamber 108 clean and free of dust, dirt, moisture, etc. when the substrate carrier 130 is not inserted into the heating chamber 108 . help protect against

In other embodiments, segments 450 overlap toward central axis X. FIG. In other embodiments, segment 450 extends to a point near central axis-X, but does not extend all the way to central axis-X. For example, this provides a small central opening between segments 450 at the center of baffle 442 . For example, in some embodiments, the tip of segment 450 in the center is rounded such that segment 450 does not extend all the way to the center. In other embodiments, segments 450 are positioned to overlap adjacent segments 450 to ensure more complete coverage. This involves the segments 450 extending beyond the central axis X such that the segments 450 overlap at the center to ensure that no openings are present.

In some examples, the membrane of baffle 442 is thinner than annular baffle 142 of the first embodiment. In some examples, the membrane of baffle 442 is more flexible than baffle 142 of the first embodiment.

Referring to FIG. 14, substrate carrier 130 can be inserted into heating chamber 108 when a user wishes to use aerosol-generating device 100 . To insert substrate carrier 130 into heating chamber 108, tip 134 of substrate carrier 130 is pressed against sealing surface 443, pushing segment 450 downward, deforming baffle 442, and pushing sealing surface 443 closer to the central axis. It is directed toward X to form a seal against the exterior surface of the substrate carrier 130 . Continued application of force causes substrate carrier 130 to be inserted through baffle 442 .

Baffles 442 do not include openings between segments 450 , so in order for substrate carrier 130 to be inserted into heating chamber 108 , it must contact segments 450 of baffles 442 . Segments 450 are deformed by substrate carrier 130 as substrate carrier 130 is inserted. Thus, baffles 442 and particularly segments 450 are deformable under the force of a user inserting substrate carrier 130 . Segment 450 is deformable such that segment 450 deforms toward base 112 of heating chamber 108 when substrate carrier 130 is inserted toward heating chamber 108 through the center of baffle 442 . Segment 450 is pushed into the interior volume of heating chamber 108 toward base 112 . In particular, segments 450 are defined by slits 452 such that segments 450 bend out of the plane of baffle 442 and the tip of each segment closest to central axis X in the first configuration is bent toward base 112 . bends at an arc length of the outer diameter located between adjacent radial sides. In a second configuration, segments 450 are maintained deformed by substrate carrier 130 when substrate carrier 130 remains loaded within aerosol-generating device 100 .

Insertion of the substrate carrier 130 involves deforming a segment 450 of the baffle 442 to expose a central opening 444 into which the substrate carrier 130 is filled. Central opening 444 is thus defined by the gap between adjacent segments 442 caused by the bending of segment 450 . Note that although central opening 444 is formed by the separation of segments 450, central opening 444 is at least partially occluded by substrate carrier 130 as substrate carrier 130 is inserted. Segment 450 is deformed until central opening 444 is approximately the same width as substrate carrier 130 . Accordingly, baffle 442 extends shorter toward central axis X when deformed by substrate carrier 130 to allow substrate carrier 130 to be inserted, as compared to when it is not deformed. Segment 450 is bent sufficiently to allow substrate carrier 130 to be inserted. In some embodiments, the radial sides, and thus the slits 452 along each segment 450 are at least larger than the radius of the substrate carrier 130 . That is, the radius of baffle 442 corresponding to the radius of substrate carrier 130 is configured to deflect upon insertion of substrate carrier 130 . In some examples, the radius of baffle 442 is smaller than the size of slit 452 such that a portion of slit exposes a portion of central opening 444 that is not blocked by substrate carrier 130 . This can improve airflow as described below. In other embodiments in which the diameter of the slit 452 is smaller than the diameter of the substrate carrier 130, the portion of the baffle 442 located between the perimeter of the baffle 442 and the slit 452 is also adapted for the substrate carrier 130 to be inserted. It is configured to be deformed by the substrate carrier 130 in order to achieve the

When substrate carrier 130 is inserted into heating chamber 108 and baffle 442 is deformed, baffle 442 restricts the flow of air through open end 110 of heating chamber 108 . Baffle 442 forms at least a partial seal with outer layer 136 of substrate carrier 130 . In a fourth embodiment, segment 450 defining central opening 444 of baffle 442 forms a partial seal against outer layer 136 of substrate carrier 130 . This is because baffle 442 is deformed to accommodate substrate carrier 130 and is tensioned by substrate carrier 130 . In a fourth embodiment, baffle 442 deforms such that segments 450 separate and press against substrate carrier 130 . However, the baffle 442 is not complementary to the substrate carrier 130 and does not form a complete seal around the entire perimeter of the substrate carrier 130, instead forming only a partial seal, particularly the radius of the slit 452. Gaps exist, particularly between adjacent segments 450, if greater than the radius of the substrate carrier 130. FIG.

In one embodiment, the radius of segment 450 , and thus the radius of slit 452 , is the same as or smaller than the radius of substrate carrier 130 . Thus, the entire segment 450 is deformed by the insertion of the substrate carrier 130 and the substrate carrier 130 forms a seal against the exterior of the baffle 442 which is continuous around the outer diameter. In this embodiment, the substrate carrier 130 forms a seal in a manner similar to the first embodiment, the seal being formed around the entire perimeter of the substrate carrier 130 . In such cases, it may be preferable to include holes in the baffle 442, such as the holes 346 of the third embodiment, to provide air flow. Advantageously, friction between segment 450 and substrate carrier 130 may help retain substrate carrier 130 within heating chamber 108 .

Baffle 442 is in a first configuration when substrate carrier 130 is not inserted into heating chamber 108 . Referring to FIG. 13, baffle 442 is shown in a first configuration. In the first configuration, the segments 450 are arranged to meet and the baffle 442 covers the open end 110 or edge of the interior volume of the heating chamber 108 . When substrate carrier 130 is inserted into heating chamber 108, segment 450 of baffle 442 transforms from the first configuration to the second configuration. Referring to FIG. 14, baffle 442 is shown in a second configuration. A second configuration involves baffle 442 being in a deformed state and segment 450 is deflected and bent to allow substrate carrier 130 to be received in heating chamber 108 through central opening 444 . In a second configuration, baffle 442 forms a partial seal against substrate carrier 130 .

While the partial seal provides the heat retention benefits described with reference to the first embodiment, it also provides a gap between the substrate carrier 130 and the baffle 442 . In particular, segment 450 does not contact substrate carrier 130 around the entire perimeter of substrate carrier 130 . There is no perfect seal at some point between adjacent segments 450 . This provides an opening through which air can flow between the interior volume of heating chamber 108 and the outside environment. Thereby, the suction resistance can be improved. In some embodiments, this means that the holes in the baffle, for example in the third embodiment, are not required, making manufacturing simpler. In other embodiments, holes are also provided in baffle 442 to further improve draw resistance.

In some embodiments, the segment 450 is axially spaced along the central axis X from the aerosol substrate 132 within the substrate carrier 130 when the substrate carrier 130 is loaded into the heating chamber 108 . is configured as follows. In particular, segment 450 can impede heat transfer from heater 118 to aerosol substrate 132, particularly in instances where segment 450 is made from a low thermal conductivity material. In one embodiment, the length and/or area of each segment 450 is limited to reduce interference with heating of the aerosol substrate 132 . In another embodiment, baffle 442 is spaced from aerosol substrate 132 located within substrate carrier 130 . For example, in the first, second, fifth, tenth, eleventh, or twelfth embodiments, baffle 442 may be located outside heating chamber 108, for example.

As in the first embodiment, baffle 442 is elastically deformable such that segments 450 are configured to elastically return to the first configuration when substrate carrier 130 is removed. This provides a seal when the substrate carrier 130 is removed. This is advantageous when several substrate carriers 130 are used in succession in a relatively short period of time. This is because heat and steam can be better retained within the heating chamber 108 .

In some embodiments, the portion of slit 452 furthest from central axis X is designed to prevent the slit from further tearing the baffle if, for example, a user uses too much force to insert substrate carrier 130 . Provide means to prevent These means may include larger holes or cutouts in the outer portion of slit 452 . Increasing the radius reduces the force concentration. These can also double as holes, such as the holes 346 of the fourth embodiment. In some cases, they may be made from a more robust material (e.g., thicker) or have a rim (e.g., made from plastic or metal to improve structural support and prevent tearing). Including holes.

Although shown in FIGS. 13 and 14 only as a heating chamber 108, the fourth embodiment could easily be formed as part of a complete aerosol generating device 100, for example in place of the heating chamber 108 of FIG. .

The baffle 442 including the segment 450 in the fourth embodiment can be readily applied to other embodiments, for example embodiments having baffles located within the heating chamber such as the baffle 642 of the sixth embodiment. Please understand.
Fifth Embodiment A fifth embodiment will now be described with reference to FIG. The aerosol generating device 100 of the fifth embodiment is identical and has similar features to the aerosol generating device 100 of the first embodiment described with reference to FIGS. 1-7, except as described below. The same reference numbers are used to refer to The aerosol generating device 100 of the fifth embodiment has air channels different from the air channels of the first embodiment.

More particularly, referring to FIG. 15, the fifth embodiment aerosol-generating device 100 includes an air inlet 554 in the outer casing 102 . Air inlet 554 is located in the sidewall of outer casing 102 between heating chamber 108 and first end 104 of aerosol-generating device 100 . In other embodiments, air inlet 554 may be located in outer casing 102 at the base toward first end 104 . In the fifth embodiment, the air inlet 554 is positioned proximate the base 112 of the heating chamber 108 . Air inlet 554 provides fluid communication between the external environment and the interior of outer casing 102 . In some examples, the power supply 120 and control circuitry 122 within the outer casing 102 are isolated from the airflow path. For example, in some embodiments, a pipe connected to air inlet 554 is provided to prevent airflow from interfering with control circuit 122 and power supply 120 . In some embodiments, the electrical connections 124 are also routed around the airflow path to prevent interference or damage.

Heating chamber 108 also includes an air inlet 558 . Air inlet 558 is located in base 112 , but may alternatively be provided in tubular wall 114 . Air inlet 558 is located in the center of base 112, although other locations are envisioned. Air inlet 558 extends into base 112 . Air inlet 558 is configured to provide fluid communication between the interior volume of heating chamber 108 and air inlet 554 of outer casing 102 . The external environment is thus in fluid communication with the interior volume of heating chamber 108 via air inlet 554 in outer casing 102 and air inlet 558 in base 112 of heating chamber 108 .

This airflow path provides a path for air to flow from the outside into the heating chamber 108 . This is particularly so because the insertion of substrate carrier 130 causes tip 134 to contact sealing surface 543 and push sealing surface 543 downward, deforming baffle 542 and pushing sealing surface 543 more toward central axis X. and a baffle 542 that is similar to baffle 142 of the first embodiment except as described below in that it includes forming a seal against the exterior surface of substrate carrier 130 . Useful in combination. This is beneficial. Because baffle 542 must draw air from the outside through open end 110 and into heating chamber 108 through an air flow path between baffle 542 and substrate carrier 130 (indicated by arrow B in FIG. 7). Otherwise, a more secure seal can be provided. Instead, an alternative airflow path entering heating chamber 108 from the outside through base 112 eliminates the need to provide deformable baffle 542 to direct airflow between baffle 542 and substrate carrier 130. . Instead, a perfect seal can be obtained between the baffle 542 and the substrate carrier 130, increasing the efficiency of heat retention while allowing air flow from below. For example, baffle 542 may be less flexible or less deformable to obtain a better seal. In an alternate embodiment, the baffle 542 extends further toward the central axis X than in the first embodiment in order to obtain a better seal. However, in other embodiments, baffle 542 is also convertible to a third configuration to allow more airflow into heating chamber 108 and improve draw resistance.

When a user applies suction to substrate carrier 130 in the direction indicated by arrow A in FIG. Air may be drawn into heating chamber 108 through inlet 558 in the direction indicated by arrow D in FIG. The air is generally heated as it enters the heating chamber 108 and the air facilitates transferring heat to the aerosol substrate 132 by convection.

It will be appreciated that the air flow path through the heating chamber 108 is generally linear in the fifth embodiment, ie from the base 112 of the heating chamber 108 to the open end 110 of the heating chamber 108 . The configuration of the fifth embodiment also allows the gap between the tubular wall 114 of the heating chamber 108 and the substrate carrier 130 to be reduced. Indeed, in the fifth embodiment, the diameter of the heating chamber 108 is less than 7.6 mm and the distance between the substrate carrier 130 having a diameter of 7.4 mm and the tubular wall 114 of the heating chamber 108 is less than 1 mm. be. Note that FIG. 15 is not to scale.

In other embodiments, air inlet 554 of outer casing 102 is located at first end 104 of aerosol-generating device 100 . This allows the passage of air through the entire aerosol-generating device 100 to be generally straight, e.g. , air enters the aerosol-generating device 100 and flows through (or over, through, etc.) the aerosol substrate 132 within the aerosol-generating device 100, typically proximal to the user during use, e.g. With the second end 140 of the substrate carrier 130 directed toward the user's mouth, it enters the user's mouth.

Since the airflow entering the heating chamber 108 can be obtained entirely through the use of the air inlets 554, 558, the inlets 554, 558 are sized and shaped to achieve the desired effect. can be made and suitably arranged as such. More specifically, the air inlets 554,558 are configured to allow for a desired draw resistance, and optionally further to balance this draw resistance with heat loss through the inlets 554,558. can be made to any size. In some examples, air inlets 554, 558 may include one-way flow valves to reduce heat dissipation. In some examples, air inlet 558 may be located elsewhere in heating chamber 108 , such as tubular wall 114 . In such cases, multiple air inlets 554 may be distributed in and/or located along tubular wall 114 .

It will be appreciated that the alternate airflow paths of the fifth embodiment may be readily applied to other embodiments, for example, embodiments having alternate baffles such as baffle 442 of the fourth embodiment. sea bream.
Sixth Embodiment A sixth embodiment will now be described with reference to FIG. The aerosol-generating device 100 of the sixth embodiment is identical and has similar features to the aerosol-generating device 100 of the first embodiment described with reference to FIGS. 1-7, except as described below. The same reference numbers are used to refer to The aerosol generating device 100 of the sixth embodiment has an alternative baffle 642 that differs from the baffle 142 of the first embodiment.

More specifically, referring to FIG. 16, baffle 642 is positioned within heating chamber 108 . In particular, baffle 642 is attached to the inner surface of tubular wall 114 . Baffle 642 extends from tubular wall 114 toward central axis X. As shown in FIG. Baffle 642 is axially disposed proximal open end 110 of heating chamber 108 . In a sixth embodiment, the baffle 642 is positioned within the heating chamber 108 and such that the top surface of the baffle 642 closest to the second end 106 of the aerosol-generating device 100 is substantially aligned with the open end 110 . are placed in In other embodiments, such as the seventh embodiment, the baffle 642 is spaced from the open end 110 toward the base 112 .

Thus, the outer periphery of baffle 642 contacts and is attached to tubular wall 114 . For example, baffle 642 is secured to tubular wall 114 by an adhesive. Instead, baffle 642 is received in a recess or ledge within tubular wall 114 of heating chamber 108 . In other embodiments, tubular wall 114 is crimped or bent over the top surface of baffle 642 to further secure baffle 642 .

In the sixth embodiment, baffle 642 is annular and has a shape similar to baffle 142 of the first embodiment. The outer perimeter of baffle 642 abuts tubular wall 114 and therefore baffle 642 of the sixth embodiment is smaller than baffle 142 of the first embodiment. Baffle 642 includes a central opening 644 defined by the inner diameter of the annulus of baffle 642 . Accordingly, the width of central opening 644 is less than the width of tubular wall 114 . In the sixth embodiment, central opening 644 is the same width as central opening 144 of the first embodiment. Thus, the baffles 642 of the sixth embodiment extend from the tubular wall 114 toward the central axis X the same amount that the baffles 142 of the first embodiment extend beyond the tubular wall 114 toward the central axis X. . Accordingly, the sixth embodiment provides an alternative configuration that provides a similarly sized central opening 644 when compared to the central opening 144 of the first embodiment. Therefore, the annular width of baffle 642 between the inner and outer diameters is smaller than in the first embodiment. The width of baffle 642 may be the same as the width of baffle 342 of the third embodiment.

In other embodiments, central opening 644 is smaller than central opening 144 of the first embodiment. Consequently, this requires more deformation of the baffle 642 by the substrate carrier 130, but provides a tighter seal. As in the first embodiment, insertion of substrate carrier 130 causes tip 134 to contact sealing surface 643 and push sealing surface 643 downward, deforming baffle 642 and causing sealing surface 643 to become more centered. including deflecting toward axis X and forming a seal against the exterior surface of substrate carrier 130 .

The baffles 642 inside the heating chamber 108 of the sixth embodiment have alternative baffles, such as the baffles 442 of the fourth embodiment, or the holes 346 of the third embodiment, in other embodiments. It should be understood that it can be easily applied to any embodiment.
Seventh Embodiment A seventh embodiment will now be described with reference to FIG. The aerosol generating device 100 of the seventh embodiment is identical to the aerosol generating device 100 of the sixth embodiment described with reference to FIG. 16, except as described below, to refer to similar features. The same reference number is used for The aerosol generating device 100 of the seventh embodiment has baffles 742 arranged differently than the baffles 642 of the sixth embodiment.

More particularly, referring to FIG. 17, a baffle 742 is positioned inside the heating chamber 108, the seventh embodiment baffle 742 being spaced from the open end 110, and the sixth embodiment baffle 742 being spaced from the open end 110. The baffle 642 of the sixth embodiment is identical to the baffle 642 of the sixth embodiment except that it is located further toward the base 112 than the baffle 642 of the sixth embodiment.

Placing the baffle 742 far from the open end 110 can limit the available internal volume between the baffle 742 and the base 112 and between the substrate carrier 130 and the tubular wall 114 in which air can be heated. be. This may be desirable if it is desired to heat a small amount of air to a high temperature, and a large amount may require a large amount of power to heat it to the required temperature, or a long time to reach this temperature. It will take. By providing a smaller volume, faster heating and shorter time to first puff can be achieved. However, it is preferable to have sufficient volume in the heating chamber 108 to collect and heat the air, so in some examples, the baffle 742 does not provide the necessary volume in the heating chamber 108. is positioned toward the open end 110 sufficiently for the

In some embodiments, it is desirable that baffle 742 not be positioned to overlap aerosol substrate 132 . That is, the baffle 742 is closer to the base 112 than the boundary between the aerosol substrate 132 and the aerosol collection region 134 where the aerosol substrate 132 is not located toward the second end 140 of the substrate carrier 130 . Not placed in axial position. That is, baffle 742 is positioned such that aerosol substrate 132 is positioned between baffle 742 and base 112 . When baffle 742 is positioned between a portion of aerosol substrate 132 and the interior volume of heating chamber 108, this portion of aerosol substrate 132 undergoes reduced heating. Thus, in some cases, the entire aerosol substrate 132 is positioned between the baffle 742 and the base 112 of the heating chamber 108, as shown in FIG. 7 of the first embodiment. This may also apply to other embodiments. Thus, in the seventh embodiment, the distance baffle 742 is positioned away from open end 110 ensures that aerosol substrate 132 is contained within the seal of heating chamber 108 and is properly heated. On the other hand, it is chosen as a balance between improved heat retention and time to first puff. As in the first embodiment, insertion of substrate carrier 130 causes tip 134 to contact sealing surface 743 and push sealing surface 743 downward, deforming baffle 742 and causing sealing surface 743 to become more centered. including deflecting toward axis X and forming a seal against the exterior surface of substrate carrier 130 .

In other embodiments, the baffle 742 is positioned to align with the interface between the aerosol substrate 132 and the aerosol collection region 134 to help provide a seal at this location and prevent the aerosol groups from It may be appropriate to retain heat within material 132 .

Variability in the location of the baffle 742 relative to the open end 110 of the heating chamber 108 in the seventh embodiment may be applied to other embodiments, e.g., embodiments having alternative baffles such as the baffle 442 of the fourth embodiment. It should be understood that it can easily be applied.
Eighth Embodiment An eighth embodiment will now be described with reference to FIG. The aerosol generating device 100 of the eighth embodiment is identical to the aerosol generating device 100 of the sixth embodiment described with reference to FIG. 16, except as described below, to refer to similar features. The same reference number is used for The aerosol generating device 100 of the eighth embodiment has a baffle 842 that differs from the baffle 642 of the sixth embodiment.

More particularly, referring to FIG. 18, baffle 842 is positioned within heating chamber 108 similar to baffle 642 of the sixth embodiment. Baffle 842 is identical to baffle 642 of the sixth embodiment, except that baffle 842 of the eighth embodiment includes tapered portion 860 . That is, baffle 842 has a tapered profile. More specifically, baffle 842 is radially tapered. Baffle 842 also defines a central opening 844 . The top surface of baffle 842 tapers away from base 112 toward open end 110 . Tapered portion 860 increases the width of central opening 844 away from base 112 toward open end 110 . That is, the width of central opening 844 is narrower at the point of baffle 842 closest to base 112 and wider at the point of baffle 842 furthest from base 112 . As a result, the inner diameter of baffle 842 increases from the bottom surface of baffle 842 located closest to base 112 to the top surface of baffle 842 located axially furthest from base 112 . In the eighth embodiment, the increase in diameter of tapered portion 860 is linear. That is, the tapered portion 860 is straight and the diameter increases smoothly at a constant rate. In the eighth embodiment, slanted tapered surface 860 also functions as sealing surface 843 . As in the first embodiment, insertion of substrate carrier 130 causes tip 134 to contact sealing surface 843 and push sealing surface 843 downward, deforming baffle 842 and causing sealing surface 843 to become more centered. including deflecting toward axis X and forming a seal against the exterior surface of substrate carrier 130 .

Tapered portion 860 provides a reduced width of central opening 844 for inserting substrate carrier 130 . Accordingly, tapered portion 860 may provide a guide for receiving substrate carrier 130 and assist in loading substrate carrier 130 into heating chamber 108 . Further, by providing a gradually increasing tapered portion 860, the force required to deform the baffle 842 to insert the substrate carrier 130 is reduced and the substrate carrier 130 is inserted. The risk of damaging the material carrier 130 (eg, tearing the paper of the outer layer 136 to expose the aerosol substrate 132) is reduced. The innermost portion of baffle 842 (closest to central axis X) is the thinnest and therefore the most flexible, potentially improving the seal formed against substrate carrier 130 .

In some examples, baffle 842 includes tapered portion 860 and also includes a constant thickness portion between central axis X and tubular wall 114 . For example, an annulus around tapered portion 860 extends to tubular wall 114 with a constant thickness.

In other embodiments, tapered portion 860 increases in diameter in a non-linear manner. For example, the slope may not be a constant slope, eg, increasing or decreasing toward the base 112 . In one example, the gradient of the slope decreases toward the base 112 to reduce the force for initially inserting the substrate carrier 130, but also provide an effective seal. Other geometries other than the tapered design shown in FIG. 18 are possible. For example, a rounded profile, a profile whose widest point is the midpoint of the baffle 842, etc. is also envisioned.

that the tapered portion 860 of the eighth embodiment can be readily applied to other embodiments, for example embodiments having baffles located outside the heating chamber, such as the baffle 142 of the first embodiment; Please understand.
Ninth Embodiment A ninth embodiment will now be described with reference to FIG. The aerosol generating device 100 of the ninth embodiment is identical to the aerosol generating device 100 of the sixth embodiment described with reference to FIG. 16, except as described below, to refer to similar features. The same reference number is used for The aerosol generating device 100 of the ninth embodiment has a baffle 942 that differs from the baffle 642 of the sixth embodiment.

More specifically, referring to FIG. 19, baffle 942 is positioned within heating chamber 108 similar to baffle 642 of the sixth embodiment, but baffle 942 includes a first baffle element 942c and a second baffle element 942c. 2 baffle elements 942d. In the ninth embodiment, first baffle element 942c and second baffle element 942d are each identical to baffle 642 of the sixth embodiment. That is, the first baffle element 942c and the second baffle element 942d are annular, disposed within the heating chamber 108 and configured to deform upon insertion of the substrate carrier 130 in the manner described herein. It is The first baffle element 942c is located in the same position as the baffle 642 of the sixth embodiment, proximate the open end 110, and the second baffle element 942d, as in the seventh embodiment, It is spaced from open end 110 and positioned toward base 112 . By providing two baffle elements 942c and 942d axially spaced along tubular wall 114, heat and vapor retention can be further enhanced. The outermost surface of the first baffle element 942c also functions as a sealing surface. As in the first embodiment, insertion of substrate carrier 130 causes tip 134 to contact sealing surface 943 and push sealing surface 943 downward, deforming baffle 942 and causing sealing surface 943 to become more centered. including deflecting toward axis X and forming a seal against the exterior surface of substrate carrier 130 .

Each baffle element 942c, 942d can be any embodiment of the baffle disclosed herein. For example, at least one of first baffle element 942c and second baffle element 942d may include a tapered portion as in the eighth embodiment or a segment as in the fourth embodiment. can contain. In some examples, baffle element 942c and baffle element 942d are the same, but in other examples they can be different. For example, first baffle element 942c includes segment 450 for forming a cover over open end 110 to prevent debris from entering heating chamber 108 when aerosol generating device 100 is not in use. The second baffle element 942 d may be identical to the baffle 642 of the sixth embodiment to provide a more secure seal within the heating chamber 108 .

It should be appreciated that baffle 942 may further include additional baffle elements. For example, there may be at least three baffle elements positioned at different locations along the length of tubular wall 114 . Further, in addition to baffle elements inside heating chamber 108 , one or more baffle elements may be positioned outside heating chamber 108 .

The first baffle element 942c and the second baffle element 942d of the ninth embodiment are readily applicable to other embodiments, for example embodiments having alternative baffles, such as the baffle 442 of the fourth embodiment. It should be understood that this may apply. Indeed, the first baffle element 942c and the second baffle element 942d can have different shapes and/or sizes, for example, one can be the baffle 642 of the sixth embodiment and the other the second baffle element 942d. 8 embodiment tapered profile baffle 842 .
Tenth Embodiment Here, a tenth embodiment will be described with reference to FIGS. 20 and 21. FIG. The aerosol-generating device 100 of the tenth embodiment is identical and has similar features to the aerosol-generating device 100 of the first embodiment described with reference to FIGS. 1-7, except as described below. The same reference numbers are used to refer to The aerosol generating device 100 of the tenth embodiment has a baffle 1042 that differs from the baffle 142 of the first embodiment.

More particularly, referring to FIG. 20, aerosol-generating device 100 includes cap 1062 configured to be inserted over second end 106 of aerosol-generating device 100 . Cap 1062 includes a first wall 1064 having a cylindrical shape. First wall 1064 is the outermost wall of cap 1062 . First wall 1064 is configured to be inserted over second end 106 such that the lower portion of first wall 1064 slides into corresponding recess 1063 .

Cap 1062 includes a second wall 1066 having a cylindrical shape. The diameter of second wall 1066 is smaller than the diameter of first wall 1064 . A first wall 1064 and a second wall 1066 are concentrically arranged, both of which are centered about a central axis X. As shown in FIG. In some examples, the diameter of second wall 1066 is similar to the diameter of tubular wall 114 .

The first wall 1064 is connected to the second wall 1066 at the top of the cap 1062 , and when the cap 1062 is loaded onto the aerosol-generating device 100 , the top of the cap 1062 is the first wall of the aerosol-generating device 100 . It is furthest from the end 104 of 1. Thus, the cap 1064 forms a U-shaped cross-section and is configured to fit within a recess 1063 in the outer casing 102 of the aerosol-generating device 100, the recess aligning the cap with respect to the opening in the outer casing 102. can be made Referring to FIG. 21 , when cap 1062 is positioned on aerosol-generating device 100 , second wall 1066 faces toward second end 106 of aerosol-generating device 100 proximate open end 110 of heating chamber 108 . extends to the point of

Cap 1062 includes a baffle 1042 located on second wall 1066 . In the tenth embodiment, baffle 1042 is positioned extending from the end of second wall 1066 positioned adjacent open end 110 and has a sealing surface facing outwardly of the cap. The baffle 1042 is arranged to extend toward the central axis X. As shown in FIG. When the cap 1062 is inserted over the aerosol-generating device 100, the baffle 1042 covers the opening in the outer casing 102 and allows the substrate carrier 130 to be inserted through the opening while engaging the baffle 1042 as described above. to In the tenth embodiment, baffle 1042 is positioned between heating chamber 108 and second wall 1066 of cap 1062 . In other embodiments, baffle 1042 is positioned inside the inner diameter of second wall 1066 in a manner similar to baffle 642 of the sixth embodiment. Additionally, the baffle 1042 may be spaced from the open end 110 , for example, may be located inside the inner diameter of the second wall 1066 and may be positioned further from the second end 106 of the aerosol generating device 100 . obtain. As in the first embodiment, insertion of substrate carrier 130 causes tip 134 to contact sealing surface 1043 and push sealing surface 1043 downward, deforming baffle 1042 and causing sealing surface 1043 to become more centered. including deflecting toward axis X and forming a seal against the exterior surface of substrate carrier 130 .

A tenth embodiment allows the baffle 1042 to be removable from the heating chamber 108 and the aerosol generating device 100 . This may allow easier cleaning of the heating chamber 108 by removing the baffle 1042 so that the baffle 1042 does not interfere with entry of cleaning tools into the heating chamber 108 . Additionally, this may allow the baffle 1042 itself to be cleaned separately from the heating chamber 108 . In an alternative embodiment, heating chamber 108 itself is removable from aerosol generating device 100 . Additionally, using a cap 1062 with a baffle 1042 can provide the opportunity to retrofit the baffle to older devices by attaching the cap to the casing using clips, straps, adhesives, or the like, for example.

Cap 1062 may taper away from second end 106 or otherwise allow substrate carrier 130 to taper away from second end 106 , for example, as cap 1062 extends from second end 106 . If it does not extend further from portion 106, it may be shaped to provide a comfortable mouthpiece for the user.

It should be appreciated that the cap 1062 of the tenth embodiment may be readily applied to other embodiments, for example embodiments having alternative baffles, such as the baffle 442 of the fourth embodiment.
Eleventh Embodiment An eleventh embodiment will now be described with reference to FIG. The aerosol-generating device 100 of the eleventh embodiment is identical and has similar features to the aerosol-generating device 100 of the first embodiment described with reference to FIGS. 1-7, except as described below. The same reference numbers are used to refer to The aerosol generating device 100 of the eleventh embodiment has a heating chamber 1108 that differs from the heating chamber 108 of the first embodiment.

Overall, the eleventh embodiment is provided as an exemplary system in which the foregoing embodiments described herein may be practically implemented. In particular, the baffle of any previous embodiment can be implemented in the aerosol generating device 100 of the eleventh embodiment.

More specifically, referring to FIG. 22, the aerosol generating device 100 has a generally cup shape similar to the heating chamber 108 of the first embodiment and has similar dimensions except as described below. A heating chamber 108 is included. Heating chamber 108 is arranged to receive a substrate carrier 130 . A baffle 1142 is positioned toward the second end 106 of the aerosol-generating device 100 and has an outwardly facing sealing surface 1143 . Baffle 1142 is identical to baffle 142 of the first embodiment and is configured to deform to receive substrate carrier 130 into heating chamber 108 . As in the first embodiment, insertion of substrate carrier 130 causes tip 134 to contact sealing surface 1143 and push sealing surface 1143 downward, deforming baffle 1142 and causing sealing surface 1143 to become more centered. including deflecting toward axis X and forming a seal against the exterior surface of substrate carrier 130 .

A plurality of protrusions 1174 are formed on the inner surface of tubular wall 114 . Protrusion 1174 is an indentation in tubular wall 114 that extends toward central axis X. As shown in FIG. Protrusions 1174 reduce the effective diameter of tubular wall 114 where they are present. Protrusions 1174 are formed by crimping or otherwise pressing tubular wall 114 . The width of the projections 1174 on the outer periphery of the tubular wall 114 is small compared to their length, and their length extends along the central axis X (or generally in the direction from the base 112 to the open end 110 of the heating chamber 108). parallel. In this embodiment, there are four protrusions 1174, but only two are visible in the cross-sectional view of FIG. Four is the preferred number of protrusions 1174 to hold the substrate carrier 130 in a central position within the heating chamber 108 by applying pressure on both sides of the substrate carrier 130 . Other numbers of protrusions 1174 are also envisioned, for example two, six, eight or more.

Protrusions 1174 are disposed about the circumference of tubular wall 114 and evenly spaced about tubular wall 1174 . Providing protrusions 1174 evenly spaced around the tubular wall 114 and having the same recess depth toward the interior of the heating chamber 108 toward the central axis X ensures that the substrate carrier 130 is within the heating chamber 108 . means that it can be held in the middle position of

The protrusions 1174 have various purposes, and the exact form of the protrusions 1174 (and corresponding depressions on the outer surface of the tubular wall 114) is selected based on the desired effect. In any event, protrusions 1174 are sometimes referred to as engagement elements because they extend toward and engage substrate carrier 130 . Indeed, the terms "protrusion" and "engaging element" are used interchangeably herein. Similarly, when the protrusion 1174 is provided by pressing the tubular wall 114 from the outside, such as by hydraulic or press forming, the term "indentation" is also distinguished from the terms "protrusion" and "engaging element." used without Forming the protrusion 1174 by stamping the tubular wall 114 has the advantage that the protrusion 1174 is integral with the tubular wall 114 and thus has minimal impact on heat flow. Furthermore, projections 1174 do not add thermal mass as if additional elements were added to the inner surface of tubular wall 114 of heating chamber 108 . Finally, stamping the tubular wall 114 as described increases the strength of the tubular wall 114 by introducing transversely extending portions into the tubular wall 114, thus providing resistance to bending of the tubular wall 114 and It allows the tubular wall 114 to be made thinner, which increases heat transfer across its thickness.

Aerosol-generating device 100 functions by both conduction and convection. Heat is conducted from the surface of protrusions 1174 that engage outer layer 136 of substrate carrier 130 . Convection is achieved by heating the air in the air gap between the inner surface of tubular wall 114 and outer layer 136 of substrate carrier 130 . That is, when a user inhales on the aerosol-generating device 100 , there is convective heating of the aerosol substrate 132 as heated air is drawn through the aerosol substrate 132 . The width and height (ie, the distance each projection 1174 extends into the heating chamber 108) increase the surface area of the tubular wall 114 that conducts heat to the air, thus allowing the aerosol-generating device 100 to reach an effective temperature sooner. Become.

Protrusion 1174 interacts with substrate carrier 130 such that a portion of aerosol substrate 132 is compressed along the length of protrusion 1174 . Referring to FIG. 22, the substrate carrier 130 is squeezed over projections 1174 to be received in heating chamber 108 . Compression of the aerosol substrate 132 can improve conduction within the aerosol substrate 132, resulting in more efficient and uniform heating, especially in the central region. Each projection 1174 includes an upper end located toward second end 106 where projection 1174 contacts tubular wall 114 . In an eleventh embodiment, the upper end is an angled taper that smoothly increases the diameter of tubular wall 114 to protrusion 1174 .

The combination of providing protrusions 1174 and baffles 1142 around substrate carrier 130 can help align substrate carrier 130 with the center of heating chamber 108 for more uniform heating of aerosol substrate 132 . and result in a more uniform airflow around the substrate carrier 130 . In addition, projections 1174 reduce the internal volume of heating chamber 108, providing better heating efficiency in conjunction with baffle 1168 providing a seal at open end 110. FIG.

Heating chamber 108 further includes a pedestal 1180 within base 112 . The pedestal 1180 raises the first end 138 of the substrate carrier 130 relative to the base 112 so that air can enter around the pedestal 1180 of the first end 138 . Accordingly, pedestal 1180 has a smaller width than first end 138 . Air within the heating chamber 108 can then be drawn through the first end 1138 by the user, as indicated by arrow A in FIG.

providing a pedestal 1180 in the base 112 of the heating chamber 108 to enhance airflow through the first end 138 of the substrate carrier 130; and providing an air flow path indicated by arrow B in FIG. can provide an optimum airflow that balances air supply and draw resistance for aerosolization of the aerosol substrate 132. In some embodiments, the baffle 1142 is configured to channel airflow between the baffle 1142 and the substrate carrier 130 when a user applies suction to the second end 140, as in the first embodiment. It is configured to be further modified to a third configuration, such as baffle 1142 of . In another example, baffle 1142 is perforated, such as baffle 342 of the third embodiment, to provide airflow to heating chamber 108 .
DEFINITIONS AND ALTERNATIVE EMBODIMENTS From the above description, it will be appreciated that many features of the various embodiments are interchangeable. The disclosure extends to further embodiments that include combining features of various embodiments together in forms not specifically recited. For example, any of the baffle configurations shown herein can be used with either airflow path (first and second embodiments). Similarly, the protrusions described in the eleventh embodiment can be incorporated into any of the baffle designs. Caps may be included in any of the other designs. In some cases the cap may simply be a mouthpiece, in other cases the cap may provide additional baffles to improve heat and vapor retention, for example.

The term "heater" should be understood to mean any device for outputting thermal energy sufficient to form an aerosol from an aerosol substrate. Transfer of thermal energy from the heater to the aerosol substrate can be by conduction, convection, radiation, or any combination of these means. As non-limiting examples, an electrically conductive heater may directly contact and press against the aerosol substrate, or may contact a separate component, the separate component itself heating by conduction, convection and/or radiation. It causes heating of the aerosol substrate. Convective heating may involve heating a liquid or gas such that thermal energy is transferred (directly or indirectly) to the aerosol substrate.

Radiant heating includes, but is not limited to, transferring energy to the aerosol substrate by emitting electromagnetic radiation in the ultraviolet, visible, infrared, microwave, or radio frequency portions of the electromagnetic spectrum. The radiation emitted in this way can be directly absorbed by the aerosol substrate and cause heating, or the radiation can be absorbed by another material, such as a susceptor or a fluorescent material, so that the radiation is of different wavelengths. or re-emitted with spectral weighting. Optionally, the radiation can be absorbed by the material, which then transfers heat to the aerosol substrate by any combination of conduction, convection and/or radiation.

The heater may be electrically driven, combustion driven, or driven by any other suitable means. Electrically driven heaters may include resistive track elements (optionally including insulating packaging), induction heating systems (including, for example, electromagnets and high frequency oscillators), and the like. The heater may be positioned around the outside of the aerosol substrate, may penetrate partially or completely into the aerosol substrate, or any combination thereof.

The term "temperature sensor" is used to describe an element capable of determining the absolute or relative temperature of a portion of the aerosol-generating device. This can include thermocouples, thermopiles, thermistors, and the like. The temperature sensor may be provided as part of another component or may be a separate component. In some examples, multiple temperature sensors may be provided, eg, to monitor heating of various portions of the aerosol-generating device, eg, to determine a thermal profile.

Referring to the above-described embodiments, the aerosol base comprises tobacco, for example in dried or cured form, optionally with additional ingredients for flavor or to provide a smoother or more satisfying effect. have. In some examples, an aerosol substrate such as tobacco can be treated with a vaporizing agent. Vaporizers can improve aerosol generation from an aerosol substrate. Vaporizing agents may include, for example, polyols such as glycerol or glycols such as propylene glycol. Optionally, the aerosol base may be free of tobacco or even nicotine, instead containing natural or artificial ingredients to provide flavor, volatility, improved smoothness and/or other pleasing benefits. may contain derived ingredients. Aerosol substrates may be provided as solid or paste-type materials in shredded, pelleted, powdered, granular, strip or sheet form, optionally combinations thereof. Similarly, the aerosol substrate can be a liquid or gel. In fact, some examples may include both a solid portion and a liquid/gel portion.

Accordingly, aerosol-generating devices can be equally referred to as "heated tobacco devices," "heated non-combustion tobacco devices," "devices for vaporizing tobacco products," etc., and are suitable devices for achieving these effects. interpreted. The features disclosed herein are equally applicable to devices designed to vaporize any aerosol substrate.

Embodiments of the aerosol-generating device are described as configured to contain an aerosol substrate within a pre-packaged substrate carrier. A substrate carrier can generally resemble a cigarette having a tubular region with an aerosol substrate positioned in a suitable manner. Some designs may also include filters, aerosol collection areas, cooling areas and other structures. For example, a flexible planar material such as an outer layer of paper or other foil to hold the aerosol substrate in place may also be provided to further resemble cigarettes and the like.

As used herein, the term "fluid" is to be taken as generically describing flowable types of non-solid materials including, but not limited to, liquids, pastes, gels, powders, and the like. shall be Accordingly, "fluidized material" shall be interpreted as a material that is essentially a fluid or that has been modified to behave as a fluid. Fluidization can include, but is not limited to, powderization, dissolution in a solvent, gelation, thickening, thinning, and the like.

As used herein, the term "volatile" means a substance that can readily change from a solid or liquid state to a gaseous state. As a non-limiting example, a volatile substance may have a boiling or sublimation temperature near room temperature at ambient pressure. Accordingly, "volatilize" or "volatilise" shall be taken to mean to volatilize (a material) and/or to evaporate or disperse in a vapor.

As used herein, the term "vapor" (or "vapor") means: (i) a liquid naturally transformed by the action of heat to a sufficient degree; or (ii) particles of liquid/moisture suspended in the air and visible as steam/smoke clouds, or (iii) fills space like a gas but liquefies under pressure only when below the critical temperature. Fluid that can.

Consistent with this definition, the term "vaporize" (or "vaporize") means the following. (i) changes to or causes a change to vapor; and (ii) if the particles change physical state (ie from liquid or solid to gaseous state).

As used herein, the term "atomise" (or "atomize") shall mean: (i) transforming (substances, especially liquids) into very small particles or droplets, and (ii) if the particles remain in the same physical state (liquid or solid) as before spraying.

As used herein, the term "aerosol" shall mean a system of particles dispersed in air or gas, such as mist, fog or smoke. Thus, the term "aerosolize" (or "aerosolize") means to make into an aerosol and/or to disperse as an aerosol. Note that the meaning of aerosol/aerosolizing is consistent with each of the definitions of volatilizing, nebulizing and vaporizing above. For the avoidance of doubt, aerosol is used consistently to describe a mist or droplets containing particles that are nebulized, volatilized or vaporized. Aerosol also includes a mist or droplets containing any combination of nebulized, volatilized or vaporized particles.

Claims (15)

An aerosol-generating device (100), comprising:
A heating chamber (108) having a tubular wall (114) extending about a central axis (X), said tubular wall (114) defining an internal volume of said heating chamber (108), said heating chamber (108) 108) has an open end (110) and passes a substrate carrier (130) containing an aerosol substrate (132) through said open end (110) into said internal volume along said central axis (X). a heating chamber (108) arranged to receive a
a heater (118) extending around the heating chamber (108) for supplying heat to the heating chamber (108);
a baffle (142) having a sealing surface (143) facing away from said open end (110), wherein said sealing surface (143) when said substrate carrier (130) is inserted into said heating chamber (108); is arranged to deform such that the stop surface (143) is deflected to face more towards said central axis (X) and thus towards the side walls of said substrate carrier (130); an aerosol-generating device (100) comprising a baffle (142). 2. The method of claim 1, wherein the distance between the innermost portion of said baffle (142) and said central axis (X) is less than the distance between said inner surface of said tubular wall (114) and said central axis (X). An aerosol generating device (100) as described. 3. The aerosol generating device (100) of claim 1 or 2, wherein the baffle (142) is positioned proximate to the open end (110) of the heating chamber (108). The aerosol-generating device (100) of any one of claims 1-3, wherein the baffle (142) is elastically deformable. Said baffle (142) is a membrane comprising at least two portions (450), said at least two portions (450) defined by a slit (452) between said at least two portions (450), said portions The aerosol-generating device of any of claims 1-4, wherein (450) is configured to be deformably split to receive the substrate support (130) within the heating chamber (108). (100). 6. The baffle (142) of any preceding claim, wherein the baffle (142) has at least one hole (346), the at least one hole (346) configured to allow airflow therethrough. An aerosol generating device (100) according to any one of the clauses. The aerosol-generating device (100) of any one of the preceding claims, wherein the baffle (142) is arranged at least partially inside the heating chamber (108). The baffle (142) is located outside the heating chamber (108) and is positioned adjacent to or spaced from the open end (110) of the heating chamber (108), according to any of the preceding claims. 7. The aerosol-generating device (100) according to any one of clauses 6 to 9. The aerosol generating device (100) of any preceding claim, wherein the baffle (142) surrounds the central axis (X). The baffle (142) is made from a material having a first thermal conductivity and the tubular wall (114) is made from a material having a second thermal conductivity, the first thermal conductivity being , less than said second thermal conductivity. The baffle (142) pushes the baffle (142) and the substrate carrier (130) into the interior volume of the heating chamber (108) upon suction through the substrate carrier (130) by a user. The aerosol-generating device (100) of any preceding claim, wherein the aerosol-generating device (100) is elastically deformable from a sealed configuration to an inflow configuration to allow airflow between the two. Said baffle (142) defines an opening (144) for receiving said substrate carrier (130) therethrough, said opening (144) defining said The aerosol-generating device (100) according to any one of the preceding claims, having a width smaller than the width of the substrate carrier (130). a power source (120);
and a control circuit (122) configured to control the supply of power from the power source (120) to the heater (118). (100). Said heating chamber (108) comprises a base (112) located at an end of said tubular wall (114) opposite said open end (110) and preferably comprises said baffle (142) and said heating chamber (1085). ) from the base (112) is approximately equal to the length of the aerosol substrate (132) supported by the substrate support (130). An aerosol generating device (100) as described. An aerosol generating system comprising an aerosol generating device (100) according to any one of claims 1 to 14 and said substrate carrier (130).

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