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WO2024235783A1 - Chambre - Google Patents

Chambre Download PDF

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Publication number
WO2024235783A1
WO2024235783A1 PCT/EP2024/062705 EP2024062705W WO2024235783A1 WO 2024235783 A1 WO2024235783 A1 WO 2024235783A1 EP 2024062705 W EP2024062705 W EP 2024062705W WO 2024235783 A1 WO2024235783 A1 WO 2024235783A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
flow path
fluid
aerosol
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/062705
Other languages
English (en)
Inventor
Tilen CEGLAR
Jaakko MCEVOY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JT International SA
Original Assignee
JT International SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JT International SA filed Critical JT International SA
Publication of WO2024235783A1 publication Critical patent/WO2024235783A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/48—Fluid transfer means, e.g. pumps
    • A24F40/485—Valves; Apertures
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F7/00—Mouthpieces for pipes; Mouthpieces for cigar or cigarette holders

Definitions

  • the present disclosure relates to a chamber for use in an aerosol generation device, a method for directing flow in such a chamber, and an aerosol generation device or consumable article including the features as set out in the claims
  • condensation may accumulate within a chamber of the device, or within a chamber of the consumable.
  • the condensation may be caused by a temperature, pressure and/or moisture difference in the fluids and surfaces within the chamber.
  • the condensed liquid may leak out of the chamber, into the aerosol generation unit, or towards a user end (i.e., an opening or mouthpiece.)
  • the liquid presents a problem for the user, because the fluid may enter the user’s mouth, providing an unpleasant user experience.
  • a chamber for use in an aerosol generation device a method for directing flow in such a chamber, and an aerosol generation device or consumable article including the features as set out in the claims.
  • a chamber for use in an aerosol generation device comprising a first flow path for the flow of generated aerosol and a second flow path for the flow of fluid.
  • the second flow path is directed toward the first flow path, such that the fluid provides a barrier between the generated aerosol and a wall of the chamber.
  • This invention aims to reduce the condensation level inside the chamber by managing the flow paths.
  • a barrier may be created between the first flow path and the wall of the chamber, thus reducing condensation.
  • the barrier may be produced or enhanced by a difference in properties of the substances on the flow path.
  • the property may be pressure, velocity, temperature, relative saturation and/or relative humidity.
  • the second flow path may advantageously provide “fresh” air to the first flow path, thus reducing the temperature of the generated aerosol.
  • the local accumulation of condensation may be reduced or dispersed, thereby causing the partial pressure of the generated aerosol to fall below the saturation point. Therefore, the amount of fluid leakage in the chamber is reduced.
  • the invention aims to provide a chamber that mitigates and reduces the amount of condensation within the chamber, thus providing an improved user experience.
  • the chamber may be a stand-alone chamber.
  • the chamber may be the chamber of an aerosol generation device.
  • the chamber may be the chamber of a consumable article.
  • the first and second flow paths may be configured to provide flows of different pressures.
  • the second flow path may be configured to meet the first flow path downstream of the generation of said generated aerosol.
  • the term meet may refer to the paths joining or merging. Therefore, fluid from the second flow path may be introduced to the chamber where condensation is most likely to occur, thus providing a barrier at an advantageous location.
  • Fluid from the second flow path may be configured to join the first flow path such that the flows of aerosol and fluid from the first and second flow paths are initially parallel.
  • fluid from the second flow path may initially flow along the walls of the chamber, thus providing an effective barrier between the walls of the chamber and generated aerosol from the first flow path.
  • An inlet of the second flow path may be offset from an inlet of the first flow path. That is, fluid from the first flow path may not pass through an aerosol generation unit. Thus, fluid from the second flow path may have a lower moisture content than the generated aerosol from the first flow path.
  • the generated aerosol and the fluid may both originate in a single sub-chamber.
  • fluid may be drawn into the sub-chamber from a single source and then split into two flow paths.
  • the fluid of the second flow path may bypass an aerosol generation unit, thus providing ‘drier’ fluid along the second flow path (i.e. such that the fluid in the different flow paths have different properties).
  • Fluid from the second flow path may be configured to flow around generated aerosol on the first flow path, once joined. Therefore, a fluid barrier is provided between the generated aerosol and the walls of the chamber, thus reducing the build-up of condensation.
  • the chamber may further comprise a central channel having a first end and a second end, the first end configured to receive the generated aerosol, and the second end configured to deliver the generated aerosol to a user.
  • the first flow path may extend from the first end of the central channel to the second end of the central channel.
  • the chamber may further comprise one or more secondary channels for fluid flow along the second flow path. Providing separate flow paths in separate channels allows for the fluid to have different moisture contents.
  • the one or more secondary channels may join the central channel downstream of the generation of said generated aerosol. Therefore, fluid from the secondary channels may be introduced to the central channel where condensation is most likely to occur, thus providing a barrier at an advantageous location.
  • An angle between the one or more secondary channels and the central channel, at the point at which they join, may be up to 15 degrees.
  • fluid from the second flow path may initially be directed along the walls of the chamber, thus effectively forming a barrier between the walls of the chamber and the generated aerosol. The small angle may also mitigate the mixing of the fluid and the generated aerosol.
  • the one or more secondary channels may join the central channel at a non-zero angle (i.e.
  • a non-zero angle at the point at which they join may join.
  • One or more of the one or more secondary channels may join the central channel at a non-zero angle.
  • secondary flow can be developed or maintained in or toward the outlet of the airflow, where the two flow flow paths, or “streams”, are combined.
  • the ratio between the total cross-sectional area of the one or more secondary channels and the cross-sectional area of the central channel may be between 0.05 and 20, preferably between 0.1 and 10, most preferably between 0.5 and 5, for example, between 0.8 and 1.2.
  • the ratio between the cross-sectional area of the second flow path and the first flow path may be between 0.05 and 20, preferably between 0.1 and 10, most preferably between 0.5 and 5, for example, between 0.8 and 1.2.
  • the above ratios provide a sufficient amount of fluid from the secondary channel to ensure the generated aerosol is shielded from the walls of the chamber, thus reducing the amount of condensation that can form.
  • the difference in cross-sectional area allows for a difference in pressure between the flows of the flow channels. The pressure difference may help the fluid form the barrier between the wall of the chamber and the generated aerosol.
  • the one or more secondary channels may be a sheath surrounding the central channel.
  • the secondary channels being a sheath ensures that the barrier formed between the generated aerosol flowing along the central channel and the fluid from the secondary channels is a complete barrier that shields the walls of the chamber at all positions.
  • the flow of the fluid and the generated aerosol may be concentric, such that the fluid from the secondary channel impinges the generated aerosol equally around the circumference. Therefore, generated aerosol (i.e., locally moist fluid) is prevented from contacting the walls of the chamber initially.
  • the chamber may further comprise a mouthpiece at the second end of the central channel.
  • the chamber may be part of said aerosol generation device. Providing the chamber as part of an aerosol generation device ensures that the advantageous barrier is formed with all types of consumables used in the device.
  • the chamber may be part of a consumable article for an aerosol generation device. Providing the chamber as part of a consumable ensures that the advantageous barrier is formed no matter which device the consumable is used with.
  • an aerosol generation device comprising the chamber of any of the preceding claims. Providing the chamber as part of an aerosol generation device ensures that the advantageous barrier is formed with all types of consumables used in the device.
  • a method for directing flow in a chamber for use in an aerosol generation device comprises flowing generated aerosol along a first flow path and flowing fluid along a second flow path.
  • the second flow path is directed toward the first flow path, such that the fluid provides a barrier between the generated aerosol and a wall of the chamber.
  • the method aims to reduce the condensation level inside the chamber by managing the flow paths.
  • a barrier may be created between the first flow path and the wall of the chamber, thus reducing condensation.
  • the barrier may be produced by a difference in properties of the substances on the flow path.
  • the property may be pressure, velocity, temperature, relative saturation and/or relative humidity.
  • the local accumulation of condensation may be reduced or dispersed, thereby causing the partial pressure of the generated aerosol to fall below the saturation point. Therefore, the amount of fluid leakage in the chamber is reduced.
  • the method aims to provide a chamber that mitigates and reduces the amount of condensation within the chamber, thus providing an improved user experience.
  • the generated aerosol may contain a high vapour concentration (i.e. have a higher relative saturation).
  • the generated aerosol may advantageously be impinged by the fluid from the second flow path so that the aerosol with the high vapour concentration is not in direct contact with the walls of the chamber where condensation is likely to occur. Therefore, the amount of condensation on the walls of the chamber may be reduced.
  • Figure 1 shows a cross-section of a first example of a chamber
  • Figure 2a shows a further cross-section of the example of the chamber
  • Figure 2b shows a cross-section of the example of the chamber at point A’
  • Figure 2c shows a cross-section of the example of the chamber at point A”
  • Figure 3a shows a cross-section of a second example of the chamber
  • Figure 3b shows a cross-section of a third example of the chamber
  • Figure 4 shows a cross-section of an example of an aerosol generation device
  • Figure 5 shows a cross-section of an example of a consumable
  • Figure 6 shows a flow chart of an example of a method.
  • aerosol precursor material vapour precursor material or “vaporizable material” are used synonymously and may refer to a material and/or composition, which may for example comprise nicotine or tobacco and a vaporising agent.
  • the aerosol precursor material is configured to release an aerosol when heated or otherwise mechanically stimulated (such as by vibrations).
  • tobacco may take the form of various materials such as shredded tobacco, granulated tobacco, tobacco leaf and/or reconstituted tobacco. Nicotine may be in the form of nicotine salts.
  • Suitable vaporising agents include: a polyol such as sorbitol, glycerol, and glycols like propylene glycol or triethylene glycol; a non-polyol such as monohydric alcohols, acids such as lactic acid, glycerol derivatives, esters such as triacetin, triethylene glycol diacetate, triethyl citrate, glycerin or vegetable glycerin.
  • the aerosol precursor material is substantially a liquid that holds or comprises one or more solid particles, such as tobacco.
  • An aerosol generation device is configured to aerosolise an aerosol precursor material without combustion in order to facilitate delivery of an aerosol to a user.
  • vapour and “aerosol”, and related terms such as “vaporize”, “volatilize” and “aerosolise”, may generally be used interchangeably.
  • the term “aerosol generation device” is synonymous with “aerosol generating device” or “device” and may include a device configured to heat an aerosol precursor material and deliver an aerosol to a user.
  • the device may be portable.
  • “Portable” may refer to the device being for use when held by a user.
  • the device may be adapted to generate a variable amount of aerosol, which can be controlled by a user input.
  • aerosol may include a suspension of vaporizable material as one or more of: solid particles; liquid droplets; gas. Said suspension may be in a gas including air. Aerosol herein may generally refer to/include a vapour. Aerosol may include one or more components of the vaporizable material.
  • a fluid here is used to refer to a flowing substance with a relatively lower moisture content or relative mass than the generated aerosol. That is, the fluid may have a lower relative humidity or saturation than the generated aerosol.
  • the relative humidity (i.e. the vapour concentration) of the fluid may be up to 100%, typically up to 80%, more typically, up to 60%, more typically, up to 40%, more typically, up to 20%, such as 10%.
  • the relative humidity of the fluid may be between 0.5% and 70%, typically between 5% and 50%, more typically, between 8% and 22%, such as 15%.
  • the relative saturation of the generated aerosol may be from 75% to 120, typically, 85%, more typically, 100%, for example, 110%.
  • the fluid may be referred to as a ‘dry’ substance or dry air
  • the generated aerosol may be referred to as a ‘moist’ substance, or moist air.
  • Figure 1 shows a cross-sectional view of a chamber 100.
  • the chamber 100 is for use in an aerosol generation device 10. This may be as part of a chamber 100 of the aerosol generation device 10, or as part of a chamber 100 of a consumable article 20 for use in the aerosol generation device 10.
  • the chamber 100 comprises a wall 102.
  • the wall 102 may be an outer wall.
  • the chamber 100 comprises a first end 106 and a second end 108.
  • the chamber 100 comprises an opening 116 at the second end 108.
  • the opening 116 may be a mouthpiece for a user to draw air from the chamber 100. That is, the opening 116 may be configured to deliver air from within the chamber 100 to a user.
  • the chamber 100 may be generally cylindrical. Alternatively, the chamber 100 may be generally cuboid or any other prism shape.
  • the first end 106 of the chamber 100 is configured to receive generated aerosol to deliver said aerosol to the first end 106 of the chamber 100.
  • the first end 106 of the chamber 100 may be configured to receive generated aerosol from an aerosol generation component.
  • the chamber 100 comprises a sub-chamber 114.
  • the sub-chamber 114 may be located at the first end 106 of the chamber 100.
  • the sub-chamber 114 may be configured to receive generated aerosol from the aerosol generation component.
  • the sub-chamber 114 may comprise the aerosol generation component.
  • the sub-chamber 114 may comprise a separating barrier (not shown) configured to partially surround the aerosol generation component.
  • the chamber 100 may comprise an air inlet 118.
  • the air inlet 118 may be part of the sub-chamber 114.
  • the air inlet 118 may be configured to allow air to be drawn into the chamber 100.
  • the chamber 100 may comprise multiple air inlets 118.
  • the chamber 100 may comprise a central inlet 118 and one or more peripheral inlets.
  • air entering through the central inlet 118 may generally be the air provided to the first flow path 180.
  • the air entering through the one or more peripheral inlets may generally be the air provided to the second flow path 190.
  • the chamber 100 comprises a first flow path 180 for the flow of generated aerosol.
  • the first from path 180 extends from the first end 106 of the chamber 100 to the second end 108 of the chamber 100. That is, the first flow path 180 may extend along the longitudinal axis Lc of the chamber 100.
  • the direction from the first end 106 of the chamber 100 to the second end 108 of the chamber 100 denotes that direction of flow of aerosol and/or fluid.
  • the chamber 100 comprises a second flow path 190 for the flow of fluid.
  • the second flow path 190 is directed towards the first flow path 180, such that the fluid provides a barrier between the generated aerosol of the first flow path 180 and the wall 102 of the chamber 100. This could be done in many ways, as described in more detail below.
  • the chamber 100 comprises a central channel 104.
  • the first end 106 of the chamber 100 may be the first end 106, or towards the first end 106, of the central channel 104.
  • the second end 108 of the chamber 100 may be the second end 108, or towards the second end 108, of the central channel 104.
  • the central channel 104 may comprise a first flow path inlet 182.
  • the first flow path inlet 182 may be configured to receive generated aerosol.
  • the first flow path inlet 182 may connect the central channel 104 with the sub-chamber 114.
  • the first flow path 180 extends from the first end 106 of the central channel 104, through the first flow path inlet 182 and to the second end 108 of the central channel 104.
  • the chamber 100 comprises one or more secondary channels 110 for fluid flow along the second flow path 190.
  • the one or more secondary channels 110 may comprise a second flow path inlet 192.
  • the second flow path inlet 192 may be configured to receive fluid.
  • the second flow path inlet may connect the one or more secondary channels 110 with the sub-chamber 114.
  • the first flow path inlet 182 may be distinct and away from the second flow path inlet 192. That is, the first flow path inlet 182 may be located towards a central axis of the chamber 100, whereas the second flow path inlet 192 may be located away from the central axis of the chamber 100. In other words, the inlet 192 of the second flow path 190 is offset from the inlet 182 of the first flow path 180.
  • the first flow path 180 may receive air from outside the chamber 100 that has passed through the aerosol generation component, or that has mostly passed through the aerosol generation component. That is, the substance flowing along the first flow path 180 is generated aerosol (i.e. , a relatively moist substance).
  • the second flow path 190 may receive air from outside the chamber 100 that has not passed through (e.g., bypassed) the aerosol generation component, or that has mostly not passed through the aerosol generation component. That is, the substance flowing along the second flow path 190 is fluid (i.e., a relatively dry substance).
  • the one or more secondary channels 110 comprise a connection 112 where the one or more secondary channels 110 join the central channel 104.
  • the one or more secondary channels 110 join the central channel 104 downstream of the generation of the generated aerosol.
  • the one or more secondary channels 110 join the central channel 104 downstream of the first end 106 of the central channel 104.
  • the one or more secondary channels 110 may be a sheath surrounding the central channel 104. This can be seen in more detail in Figures 2a, 2b and 2c. Figures 2b and 2c show cross-sectional views of the chamber 100 at points A’ and A”, respectively.
  • Figure 2b shows the central channel 104 away from the secondary channel 110. That is, the first flow path 180 and the second flow path 190 are separate.
  • Figure 2c shows the central channel 104 together with the secondary channel 110.
  • the secondary channel 110 forms a sheath around the central channel 104.
  • the secondary channel 110 may be annular.
  • the secondary channel 110 may be annular and completely surround the central channel 104.
  • the secondary channel 110 may join the central channel 104 concentrically.
  • the secondary channel 110 has the form of an unobstructed linear channel.
  • linear it is meant that the secondary channel 110 does not alternate in direction to extend back on itself, but may indeed be curved or include a degree of curvature.
  • the linear secondary channel 110 does not comprise angled sections over about 90 degrees, preferably not over about 45 degrees, more preferably not over 20 degrees, most preferably not over 15 degrees.
  • the secondary channel 110 is arranged such that at least a component of the fluid flow is in the same direction as the fluid flow along the first flow path 180.
  • a secondary channel extends back on itself, there is no component of fluid flow in the same direction as the fluid flow along a first flow path (i.e. , the secondary flow is opposite the first flow, at least over a region or part of the secondary channel).
  • unobstructed it is meant that at the connection 112 where the one or more secondary channels 110 join the central channel 104, there is not obstruction, or obstructing elements.
  • Some prior art approaches incorporate obstructed channels, for example using vanes to obstruct channels.
  • Some prior art approaches may consider an unobstructed channel, but which alternates in direction (i.e, is non-linear) - that is, the flow path comprises sharp angled changes leading to changes in direction of the fluid flow. This may impact generation of sheath flow, by resulting in a reduction in airflow speed.
  • airflow speed is increased or maintained at a high level, and furthermore, channel fabrication is simplified comprared with non-linear channel constructions.
  • sheath may refer to extending completely around a circumference of the central channel 104 or extending partially around a circumference of the central channel 104.
  • the term sheath may refer to extending around at least 90 degrees of the circumference of the central channel 104, preferably at least 180 degrees of the circumference of the central channel 104, more preferably 270 degrees of the circumference of the central channel 104, most preferably 360 degrees of the circumference of the central channel 104.
  • the degree or extent of the benefits of such sheathing will likely be linked to the degree or extent of the surrounding of the central channel.
  • ‘dry’ fluid from the second flow path 190 may flow around the ‘moist’ generated aerosol from the first flow path 180.
  • the fluid from the second flow path 190 may flow completely around the generated aerosol from the first flow path 180.
  • fluid from the second flow path 190 may completely surround, (i.e. , encircle, encapsulate), the generated aerosol from the first flow path 180.
  • the fluid may act as a barrier between the wall 102 of the chamber 100 and the generated aerosol.
  • the wall 102 of the chamber 100 may be a wall 102 of the central channel 104.
  • the fluid may act as a barrier along a section of the wall 102. The barrier is maintained due to the difference in relative humidity or saturation, or a difference in pressures of the fluid and the generated aerosol. That is, the fluid and the generated aerosol may be resistant to mixing for at least a partial length of the wall 102 of the chamber 100.
  • fluid from the second flow path 190 may join the generated aerosol from the first flow path 180 concentrically. Fluid from the second flow path 190 and generated aerosol from the first flow path 180 may flow concentrically (i.e., produce a concentric flow at the point the flow paths join).
  • the barrier between the ‘moist’ generated aerosol and the wall 102 of the chamber 100 provides the effect of reducing condensation within the chamber 100.
  • connection 112 i.e., the point at which the second flow path 190 is introduced to the first flow path 180
  • the flow of the fluid and the flow of the generated aerosol are in the same direction. That is, both the fluid and the generated aerosol are flowing in a downstream direction. In other words, both the fluid and the generated aerosol are flowing generally from a first end 106 of the chamber 100 to the second end 108 of the chamber.
  • the fluid and the generated aerosol are flowing generally along the longitudinal axis Lc of the chamber.
  • the ratio between the total cross-sectional area As of the one or more secondary channels 110 and the cross-sectional area Ac of the central channel 104 is between 0.05 and 20, preferably between 0.1 and 10, more preferably between 0.2 and 2.5, more preferably between 0.5 and 2, more preferably between 0.8 and 1.2, for example, 1 .
  • the ratio between the cross-sectional area As of the second flow path 190 and the cross-sectional area Ac first flow path 180 is between 0.05 and 20, preferably between 0.1 and 10, more preferably between 0.2 and 2.5, more preferably between 0.5 and 2, more preferably between 0.8 and 1.2, for example, 1.
  • the ratio of the cross-sections may be the ratio of the cross-sections at the connection 112.
  • the angle between the one or more secondary channels 110 and the central channel 104, at the point at which they join is up to 20 degrees, typically, up to 15 degrees, more typically, up to 10 degrees. In some examples, the angle may be up to 5 degrees.
  • the angle between the one or more secondary channels 110 and the central channel 104, at the point at which they join may be between 0 and 16 degrees, typically, between 0 and 13 degrees, more typically, between 0 and 10 degrees.
  • the angle is such that fluid from the second flow path 190 is initially directed along the walls 102 of the chamber 100. The angle may ensure that the flows are at least initially parallel, at and beyond the connection 112. That is, the flows may be substantially laminar for at least a section of the length of the chamber 100.
  • the one or more secondary channels 110 may join the central channel 104 at a non-zero angle (i.e., a non-zero angle at the point at which they join).
  • the nonzero angle between the one or more secondary channels 110 and the central channel 104, at the point at which they join (i.e., the connection 112), may be non-zero and up to 20 degrees, typically non-zero and up to 15 degrees, preferably between 2 and 15 degrees, most preferably between 5 and 15 degrees.
  • One or more of the one or more secondary channels 110 may join the central channel at a non-zero angle.
  • the second flow path can be developed, maintained or improved, in or toward the outlet of the airflow, where the two flow flow paths 110, 180 (or fluid flow “streams”) are combined.
  • the second flow path 190 extends from the first end 106 of the chamber 100, through the second flow path inlet 192, along the one or more secondary channels 110, into the central channel 104 and to the second end 108 of the central channel 104.
  • the first flow path 180 generally flows along the central channel 104 of the chamber 100.
  • the second flow path 190 generally flows initially along the one or more secondary channels 110 of the chamber 100 and then into the central channel 104 of the chamber 100.
  • the first flow path 180 and the second flow path 190 join in the central channel 104.
  • Generated aerosol from the first flow path 180 and fluid from the second flow path 190 will eventually mix, along the central channel’s length.
  • the first flow path 180 and the second flow path 190 may both originate in the same place (i.e., the sub-chamber 114), then split into different channels (i.e. , the central channel 104 and the secondary channel 110), then re-join in the chamber 100 (i.e., the central channel 104).
  • Figure 3a shows another example of the chamber 200.
  • Like reference numbers for like features have been used.
  • the chamber in Figure 3a has the reference number 200
  • the chamber in Figure 1 has the reference number 100.
  • the chamber 200 comprises two secondary channels 210.
  • the two secondary channels 210 may allow the second flow path 290 to flow around the first flow path 280 to form a barrier between the generated aerosol and the wall 202 of the chamber 200.
  • the two secondary channels 210 may join the central channel 204 at the same point along the longitudinal axis of the chamber 200.
  • Figure 3b shows yet another example of the chamber 300.
  • Like reference numbers for like features have been used.
  • the chamber in Figure 3b has the reference number 300
  • the chamber in Figure 1 has the reference number 100.
  • the chamber 300 comprises two secondary channels 310.
  • the two secondary channels 310 may allow the second flow path 390 to flow around the first flow path 380 to form a barrier between the generated aerosol and the wall 302 of the chamber 300.
  • the two secondary channels 310 may join the central channel 304 at different points along the longitudinal axis of the chamber 300. That is, fluid on the second flow path 390 may form a barrier between the generated aerosol and the wall 302 of the chamber 300 at multiple points along the length of the central channel 304.
  • secondary channels 310 may join at different points along the longitudinal axis of the chamber 330.
  • Such a construction may be advantageous where components of the aerosol generation device (e.g., the heater and cartomizer thereof) are provided in a lateral arrangement.
  • Figure 4 shows an example of an aerosol generation device 10 comprising the chamber 100, 200, 300.
  • the aerosol generation device 10 may comprise an aerosol generation component 12.
  • the aerosol generation component 12 may be upstream of the inlet 182 for the first flow path 180 and the inlet 192 for the second flow path 190.
  • Figure 5 shows an example of a consumable article 20 comprising the chamber 100, 200, 300.
  • the consumable article 20 may comprise an aerosol generation component 22.
  • the aerosol generation component 22 may be upstream of the inlet 182 for the first flow path 180 and the inlet 192 for the second flow path 190.
  • the consumable article 20 may be configured to be inserted into an aerosol generation device.
  • Figure 6 shows a flow chart of a method 600 for directing flow in a chamber 100, 200, 300 for use in an aerosol generation device.
  • the method 600 comprises a first step 610 of flowing generated aerosol along a first flow path 180, 280, 380.
  • the method 600 comprises a second step 620 of flowing fluid along a second flow path 190, 290, 390.
  • the second flow path 190, 290, 390 is directed toward the first flow path 180, 280, 380, such that the fluid provides a barrier between the generated aerosol and a wall 102, 202, 302 of the chamber 100, 200, 300.

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Abstract

La présente invention concerne une chambre (100, 200, 300) destinée à être utilisée dans un dispositif de génération d'aérosol. La chambre (100, 200, 300) comprend un premier trajet d'écoulement (180, 280, 380) pour l'écoulement d'aérosol généré et un second trajet d'écoulement (190, 290, 390) pour l'écoulement de fluide. Le second trajet d'écoulement (180, 280, 380) est dirigé vers le premier trajet d'écoulement (190, 290, 390), de telle sorte que le fluide constitue une barrière entre l'aérosol généré et une paroi (102, 202, 302) de la chambre (100, 200, 300).
PCT/EP2024/062705 2023-05-15 2024-05-08 Chambre Pending WO2024235783A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23173408 2023-05-15
EP23173408.8 2023-05-15

Publications (1)

Publication Number Publication Date
WO2024235783A1 true WO2024235783A1 (fr) 2024-11-21

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PCT/EP2024/062705 Pending WO2024235783A1 (fr) 2023-05-15 2024-05-08 Chambre

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WO (1) WO2024235783A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
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US20180360116A1 (en) * 2017-05-24 2018-12-20 Hauni Maschinenbau Gmbh Evaporator unit for an inhaler and method for controlling an evaporator unit
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