WO2024126345A1

WO2024126345A1 - Cartridge for an aerosol-generating device with a movable atomizing unit

Info

Publication number: WO2024126345A1
Application number: PCT/EP2023/085071
Authority: WO
Inventors: Andrew Robert John ROGAN; Kyle Robert Adair
Original assignee: Philip Morris Products S.A.
Priority date: 2022-12-14
Filing date: 2023-12-11
Publication date: 2024-06-20

Abstract

The present invention relates to a cartridge (100) for an aerosol¬ generating device. The cartridge comprises a liquid storage portion (122) and an atomizing unit (108). The atomizing unit comprises an atomizer (110). The atomizing unit is configured to be movable between a first position and a second position- The atomizing unit is configured such that in the first position fluid communication between the liquid storage portion and the atomizer is blocked. The atomizing unit is configured such that in the second position the liquid storage portion and the atomizer are in fluid communication.

Description

CARTRIDGE FOR AN AEROSOL-GENERATING DEVICE WITH A MOVABLE

ATOMIZING UNIT

The present invention relates to a cartridge for an aerosol-generating device, an aerosol-generating system comprising the cartridge and a method for activating a cartridge for an aerosol-generating device from an inactive transport and storage condition.

It is known to provide an aerosol-generating system for generating an inhalable vapor. One type of aerosol-generating system available on the market today comprises a vaporizer employing a so-called wick-and-coil arrangement. In these systems a part of a capillary wick extends into a liquid storage portion containing e-liquid to be volatilized. Another part of the wick is wound with a coil of heating wire. Upon application of an electric current, the heating wire evaporates the e-liquid comprised in the wick. Such aerosol-generating systems have several drawbacks, such as inconsistent manufacturing, inconsistent vapour production, dry burning, varying flavour profile, energy inefficiencies, fouling and coke production on the heating wire and wick, liquid spitting from the heating wire into the airflow tube and subsequently into user’s mouth.

To solve some of the above-mentioned problems associated with such wick-and-coil aerosol-generating systems, an atomizing unit with a ceramic atomizer core has been developed. The ceramic atomizer core contains a heating element, electrical contacts, and a ceramic atomizer body. The ceramic atomizer body is typically a cuboid shape with the heating element and electrical contacts positioned on a single face of the ceramic atomizer body. The ceramic body is porous, and e-liquid is supplied from the liquid storage portion to the heating element via the pores present within the ceramic atomizer body. For sufficient liquid to be supplied to the heating element and to prevent dry burning the ceramic pores must be relatively large. However, this can have the undesirable effect of too much liquid being supplied to the heater surface leading to potential liquid leakage. The viscosity (varying with temperature) of the e-liquid may also have an influence on the amount of e-liquid transported to the heating element. This leakage issue can be particularly problematic during shipping and transportation, where the cartridge can be subjected to temperature cycling, low pressure conditions, and vibrations. Traditional methods to address this have been to limit the range of viscosities the liquids are supplied with, seal the capsules in blister packs, or add silicone end caps to the cartridge to prevent liquid from escaping the cartridge. However, these methods have their own issues because they can limit the performance of the cartridge or add packaging costs.

It would be desirable to have an aerosol-generating system or components of such system which addresses these discussed problems. It would be desirable to have an aerosolgenerating system or components of such system that prevent or at least reduces the risk of e-liquid leakage from the system or component during transportation to the end user. It would be desirable to have an aerosol-generating system or components of such system that prevent or at least reduces the risk of e-liquid leakage from the system or component during storage. It would be desirable to have an aerosol-generating system or components of such system that improve liquid freshness. It would be desirable to have an aerosol-generating system or components of such system that extend the shelf life of the system or components. It would be desirable to have an aerosol-generating system or components of such system that reduce production costs. It would be desirable to have an aerosol-generating system or components of such system that reduce packaging.

The above mentioned and further objects of the invention are achieved by a cartridge for an aerosol-generating device comprising a liquid storage portion and an atomizing unit. The atomizing unit comprises an atomizer. The atomizing unit is configured to be movable between a first position and a second position. The atomizing unit is configured such that in the first position fluid communication between the liquid storage portion and the atomizer is blocked. The atomizing unit is configured such that in the second position the liquid storage portion and the atomizer are in fluid communication.

By providing a cartridge with an atomizing unit configured to be movable between the first position and the second position, fluid communication between the liquid storage portion and the atomizer may be selectively blocked and established. By providing a cartridge with an atomizing unit configured to be movable between the first position and the second position, fluid communication between the liquid storage portion and the atomizer may be reversibly blocked and established. Blockage of fluid communication between the liquid storage portion and the atomizer may be desired when the cartridge or an aerosol-generating system comprising the cartridge is in an inactive state. The atomizing unit may be held in or moved to the first position when the cartridge is desired to be in an inactive state. Fluid communication between the liquid storage portion and the atomizer may be desired when the cartridge is in an active state. The atomizing unit may be held in or moved to the second position when the cartridge is desired to be in an active state.

An inactive state of the cartridge or an aerosol-generating system comprising the cartridge may be a condition in which level of liquid aerosol-forming substrate of the cartridge or the system is desired to be constant. An inactive state of the cartridge or an aerosolgenerating system comprising the cartridge may be a condition in which no power is supplied continuously to the atomizer. An inactive state of the cartridge or an aerosol-generating system comprising the cartridge may be a condition in which no consumption experience is desired. The cartridge or an aerosol-generating system comprising the cartridge may be in an inactive state during one or both of transport and storage of the cartridge or the aerosol-generating system comprising the cartridge. An active state of the cartridge or an aerosol-generating system comprising the cartridge may be a condition in which power is supplied to the atomizer continuously or intermittently, such as on a puff-by-puff basis. An active state of the cartridge or an aerosolgenerating system comprising the cartridge may be a condition in which a consumption experience is desired. An active state of the cartridge or an aerosol-generating system comprising the cartridge may be a condition shortly before a consumption experience is desired. An active state of the cartridge or an aerosol-generating system may a condition in which delivery of aerosol-forming substrate to the atomizer is enabled.

When the atomizing unit is in the first position, the cartridge may be configured such that the liquid storage portion is sealed. When the atomizing unit is in the first position, the cartridge may be configured such that liquid aerosol-forming substrate of the liquid storage portion is not delivered from the liquid storage portion to the atomizer. Fluid communication between the liquid storage portion and the atomizer may be blocked by at least part of the atomizing unit. The cartridge or an aerosol-generating system comprising the cartridge may be deactivated by moving the atomizing unit from the second position into the first position.

When the atomizing unit is in the second position, the cartridge may be configured such that liquid aerosol-forming substrate of the liquid storage portion may be delivered from the liquid storage portion to the atomizer. The cartridge or an aerosol-generating system comprising the cartridge may be activated by moving the atomizing unit from the first position into the second position.

The present cartridge prevents or at least reduces the risk of liquid leakage from the cartridge or an aerosol-generating system comprising the cartridge during transportation to the end user as the atomizing unit may be held in the first position during transport such that liquid aerosol-forming substrate is confined to the liquid storage portion. The cartridge prevents or at least reduces the risk of liquid leakage from the cartridge or an aerosol-generating system comprising the cartridge during storage as the cartridge may be held in the first position during storage such that liquid aerosol-forming substrate is confined to the liquid storage portion. The present cartridge or an aerosol-generating system comprising the cartridge improves the freshness of liquid aerosol-forming substrate as liquid aerosol-forming substrate may be sealed in the liquid storage portion by having the atomizing unit in the first position reducing contact with environmental agents and degradation. The present cartridge or an aerosolgenerating system comprising the cartridge has an extended shelf life as liquid aerosol-forming substrate may be sealed in the liquid storage portion by having the atomizing unit in the first position reducing contact with environmental agents and degradation. The present cartridge or an aerosol-generating system comprising the cartridge reduce production costs and packaging as additional packaging required for conventional sealants, such as capsules in blister packs or silicone end caps, is avoided. After production of the cartridge, the atomizing unit may be continuously held in the first position before the cartridge or an aerosol-generating system comprising the cartridge is delivered to or desired to be used by the end user. In this way, the atomizing unit may be kept dry during one or both of transport or storage. As the atomizing unit may be kept dry, the risk of leakage of liquid aerosol-forming substrate from the cartridge, in particular from the atomizing unit is hence prevented or at least reduced during one or both of transport or storage in comparison to conventional devices (in which components delivering liquid to a heater are usually soaked with liquid during or one or both transport or storage). As the atomizing unit may be kept dry, the shelf life of the atomizer is improved. When a consumption experience is desired, the atomizing unit may be moved into the second position such that liquid aerosolforming substrate to be vaporized by the atomizer is delivered to the atomizing unit. Accordingly, by providing the inventive cartridge or an aerosol-generating system comprising the cartridge, the atomizing unit may be kept dry during one or both of transport and storage by holding the atomizing unit in the first position (achieving above advantageous effects), while enabling a timely supply of liquid aerosol-forming substrate required for consumption to the atomizing unit by moving the atomizing unit into the second position when the cartridge or the system is delivered to or to be used by the end user.

The atomizing unit may be configured to be slidable between the first position and the second position The atomizing unit may be configured such that the atomizing unit may be pushed from the first position into the second position. The atomizing unit may be configured such that the atomizing unit may be pulled from the second position into the first position.

The atomizing unit may comprise a support element. The support element may simplify the movement between the first position and the second position. The support element may improve the handling of the movement between the first position and the second position, e.g., for a user.

The support element may be configured to support the atomizer. The support element may be configured to receive the atomizer. The support element may be a tray. The tray may comprise a base. The support element may be a tray configured to be slidable between the first position and the second position. The support element may be a container. The support element may comprise a housing. The housing of the support element may comprise a base. The housing of the support element may comprise one or more walls. As used herein, the term “wall” refers more generally to a facet of an element, such as a container, and a wall may be formed from a single panel, or a wall may be formed from two or more abutting or overlapping panels. The housing of the support element may comprise a base and one or more walls extending from the base. The base and the one or more walls may be integrally formed. The base and one or more walls may be distinct elements that are attached or secured to each other. The housing may be a rigid housing. As used herein, the term ‘rigid housing’ is used to mean a housing that is self-supporting. The housing of the support element may made from a polymeric material, preferably selected from the group consisting of polypropylene, polycarbonate and copolyesters such as Tritan. Tritan may be a copolymer of dimethyl terephthalate (DMT), cyclohexanedimethanol (CHDM), and 2,2,4,4-tetramethyl-1 ,3- cyclobutanediol (CBDO).

The housing of the support element may at least partially enclose the atomizer. The housing of the support element may comprise a receiving section. The receiving section of the housing of the support element may be configured to receive the atomizer.

The atomizing unit may be configured such that in the first position fluid communication between the liquid storage portion and the atomizer is blocked by at least a part of the support element. Such part of the support element may be a part of the support element housing, preferably at least part of a wall of the support element housing. A constructionally simple and cost-effective embodiment of blocking fluid communication between the liquid storage portion and the atomizer in the first position is thus achieved.

The support element may be made from a fluid-impermeable material. The support element may be made from an inert material. As used herein, an “inert material” may be a material that is stable and unreactive under the conditions to which the cartridge and preferably the liquid storage portion is typically exposed, for example during one or more of a consumption experience, production, transportation or storage. The support element may be made from a polymeric material, preferably selected from the group consisting of polypropylene and polycarbonate. The support element made from such polymeric materials is simple to produce. Production of the support element made from such polymeric materials is cost-effective. The support element made from such polymeric materials improves the handling of the atomizing unit when the atomizing unit is moved between the first position and the second position.

The atomizing unit may comprise a handle. The handle may be grabbed by a user to move the atomizing unit between the first position and the second position. The handle may ease the movement of the atomizing unit between the first position and the second position for a user.

The atomizer may be configured to be temporarily or permanently mounted to the support element. The atomizer may be replaceable. The atomizer may be glued to the support element. One or both of the atomizer and the support element may comprise a mounting means. The mounting means may be configured to connect the atomizer and the support element. The mounting means may be configured to fix the relative position of the atomizer with respect to the support element. The mounting means may be configured to prevent or at least reduce relative movement between the atomizer and the support element when the atomizing unit is moved between the first position and the second position. The mounting means may comprise a depression in the support element matching the dimension of the atomizer, which may hold the atomizing unit. The mounting means may comprise a male element and a female element. The mounting means may comprise a screw and thread mechanism. The mounting means may comprise a may comprise a lip and a detent. Mounting the atomizer to the support element improves the reliability and precision with which fluid communication between the liquid storage and the atomizer is blocked in the first position. Mounting the atomizer to the support element improves the reliability and precision of the fluid communication between the liquid storage and the atomizer in the second position.

As used herein, the terms 'upstream' and 'downstream' are used to describe the relative positions of elements, or portions of elements, of the cartridge in relation to the direction in which a user draws on the aerosol-generating article during use thereof.

The cartridge comprises two ends: a proximal end through which aerosol exits the cartridge and is delivered to a user and a distal end. In use, a user may draw on the proximal end in order to inhale aerosol generated by the aerosol-generating article.

The proximal end may also be referred to as the mouth end or the downstream end and is downstream of the distal end. The distal end may also be referred to as the upstream end and is upstream of the proximal end.

The atomizing unit may be configured to be removably insertable into a receiving section of the cartridge. In this way, manufacturing of the cartridge may be improved as the cartridge may be modularly produced and assembled.

The atomizing unit may be configured to be detachably insertable into the receiving section of the cartridge. The atomizing unit may be replaceable. A replaceable atomizing unit may improve cost-effectiveness for the user as the atomizing unit may be replaced after prolonged use or malfunction.

The receiving section of the cartridge may comprise an opening. The atomizing unit may be configured to be insertable into the receiving section of the cartridge through the opening of the receiving section. The receiving section may comprise a cavity configured to receive at least a portion of the atomizing unit, preferably at least a portion of the atomizer.

The atomizing unit may be configured to be movable between the first position and the second position in a direction substantially perpendicular to a longitudinal axis of the cartridge.

As used herein, the term “longitudinal axis” may refer to the direction of the cartridge, which extends between the upstream end and downstream end of the cartridge. As used herein, the term “longitudinal axis” may refer to the direction of the cartridge, which extends between the proximal end and distal end of the cartridge. The longitudinal axis of the cartridge may be the central longitudinal axis of the cartridge.

The atomizing unit may extend into the cavity of the receiving section in a direction perpendicular to the longitudinal axis of the cartridge. The atomizing unit may be configured to be slidable between the first position and the second position in a direction substantially perpendicular to a longitudinal axis of the cartridge.

The atomizing unit may comprise a flow-controlling element. The flow-controlling element may comprise at least one first fluid flow conduit. In the first position the flowcontrolling element may be arranged such that fluid communication between the liquid storage portion and the atomizer is blocked by the flow-controlling element. In the second position the flow-controlling element may be arranged such that the liquid storage portion and the atomizer are in fluid communication by means of the first fluid flow conduit.

The support element may comprise the flow-controlling element. The housing of the support element may comprise the flow-controlling element. At least part of a wall of the housing of the support element may be the flow-controlling element. At least part of a wall of the housing of the support element abutting the liquid storage portion may be the flowcontrolling element. At least part of a wall of the housing of the support element arranged adjacent to the liquid storage portion may be the flow-controlling element.

The flow-controlling element may be configured to abut the liquid storage portion. The flow-controlling element may be configured to be adjacent to the liquid storage portion

The flow-controlling element may be made from a fluid-impermeable material. The flowcontrolling element may be made from an inert material.

The first fluid flow conduit may comprise at least one aperture in the flow-controlling element. The first fluid flow conduit may penetrate a wall of the housing of the flow-controlling element. Liquid aerosol-forming substrate of the liquid storage portion may be delivered to the atomizer by means of the first fluid flow conduit when the atomizing unit is in the second position. The first fluid flow conduit may extend along a longitudinal axis of the cartridge. The first fluid flow conduit may comprise a wall. The wall of the first fluid flow conduit may be arranged to align the first fluid flow conduit. The wall of the first fluid flow conduit may direct the flow of liquid aerosol-forming material from the liquid storage portion to the atomizer.

The cartridge may comprise a sealing element. The sealing element may preferably be made from silicone. The sealing element may be arranged proximal to the atomizing unit. The liquid storage portion may be arranged proximal to the sealing element. The sealing element may comprise at least one second fluid flow conduit. In the first position, the first fluid flow conduit of the flow-controlling element and the second fluid flow conduit of the sealing element may be arranged fully offset to each other. In the second position, the first fluid flow conduit of the flow-controlling element and the second fluid flow conduit of the sealing element may be arranged to abut each other such that a fluid flow channel is formed. The liquid storage portion and the atomizer may be in fluid communication by means of the fluid flow channel.

The sealing element may be arranged at least partially between the atomizing unit and the liquid storage portion. The sealing element may be arranged adjacent to the atomizing unit and the liquid storage portion. The liquid storage portion may comprise the sealing element. The sealing element may be a base of the liquid storage portion.

The atomizing unit, the sealing element and the liquid storage portion may be aligned along the central longitudinal axis of the cartridge. The sealing element may be arranged to separate the liquid storage portion and the atomizing unit. The sealing element may be configured to prevent liquid from being delivered to the atomizing unit in the first position. The sealing element reduces the risk of leakage of liquid aerosol-forming substrate into atomizing unit and other components of an aerosol-generating system comprising the cartridge.

The sealing element may be a sheet. The sealing element may be a substantially rectangular sheet. The sealing element may be made from a fluid-impermeable material. The sealing element may be made from an inert material.

The second fluid flow conduit may comprise at least one aperture in the sealing element. The second fluid flow conduit may penetrate the sealing element. Liquid aerosolforming substrate of the liquid storage portion may be delivered to the atomizer by means of the first fluid flow conduit and second fluid flow conduit. The second fluid flow conduit may extend along a longitudinal axis of the cartridge. The second fluid flow conduit may comprise a wall. The wall of the second fluid flow conduit may be arranged to align the second fluid flow conduit. The wall of the second fluid flow conduit may direct the flow of liquid aerosol-forming material from the liquid storage portion to the atomizer.

In the second position, the the first fluid flow conduit of the flow-controlling element and the second fluid flow conduit of the sealing element may be configured to be aligned with each other.

The fluid flow channel may comprise a wall. The wall of the fluid flow channel may be arranged to align the fluid flow channel. The wall of the fluid flow channel may comprise the wall of the first fluid flow conduit and the wall of the second fluid flow conduit. The wall of the fluid flow channel may direct the flow of liquid aerosol-forming material from the liquid storage portion to the atomizer.

The cartridge may comprise a liquid baffle plate. The liquid baffle plate may comprise at least one perforation. The liquid baffle plate may be arranged proximal to the sealing element. The liquid baffle plate may improve directing of the fluid flow.

The liquid baffle plate may be a sheet. The liquid baffle plate may be a substantially rectangular sheet. The liquid baffle plate may be made from a fluid-impermeable material. The liquid baffle plate may be made from an inert material. The liquid baffle plate may be configured to restrain or regulate the flow of fluid aerosol-forming substrate from the liquid storage portion to the atomizer. The liquid baffle plate may comprise a plurality of perforations.

The liquid baffle plate may be arranged at least partially between the sealing element and the liquid storage portion. The liquid baffle plate may be arranged adjacent to the sealing element and the liquid storage portion. The liquid baffle plate may be arranged on the sealing element. The liquid storage portion may comprise the liquid baffle plate. The atomizing unit, the sealing element, the liquid baffle plate and the liquid storage portion may be aligned along the central longitudinal axis of the cartridge.

In the second position, fluid may be delivered from the liquid storage portion to the atomizer by means of the at least one perforation of the liquid baffle plate and the fluid flow channel.

One or both of the flow-controlling element and the liquid baffle plate may be made from a polymeric material, preferably selected from the group consisting of polypropylene, polycarbonate and copolyesters such as Tritan.

The flow-controlling element made from such polymeric materials may be simple to produce. Production of the flow-controlling element made from such polymeric materials may be cost-effective.

The liquid baffle plate made from such polymeric materials may be simple to produce. Production of the liquid baffle plate made from such polymeric materials may be cost-effective.

The cartridge may comprise a mouthpiece and a cartridge housing. The cartridge housing may comprise a first compartment, a second compartment and at least one air inlet. The first compartment may comprise the atomizing unit. The second compartment may comprise the liquid storage portion. The second compartment may be arranged proximal to the first compartment. The mouthpiece may be arranged proximal to the second compartment.

The second compartment may be arranged at least partially between the mouthpiece and the first compartment. The second compartment may be arranged adjacent to the mouthpiece and the first compartment. The first compartment, the second compartment and the mouthpiece may be arranged on the central longitudinal axis of the cartridge.

The cartridge housing may comprise a base. The base of the cartridge housing may comprise the air inlet The cartridge housing may comprise one or more walls. The one or more walls of the cartridge housing may extend from the base. The base and the one or more walls may be integrally formed. The base and one or more walls may be distinct elements that are attached or secured to each other. The housing may be a rigid housing. The base of the cartridge housing may comprise the air inlet. The cartridge housing may comprise the opening of the receiving section. The cartridge housing may enclose the first compartment and the second compartment.

The first compartment may comprise a housing. The housing of the first compartment may comprise a base. The base of the housing of the first compartment may comprise the air inlet. The housing of the first compartment may comprise one or more walls. The one or more walls of the housing of the first compartment may extend from the base. The base and the one or more walls of the housing of the first compartment may be integrally formed. The base and one or more walls of the housing of the first compartment may be distinct elements that are attached or secured to each other. The housing of the first compartment may be a rigid housing. The housing of the first compartment may comprise the opening of the receiving section. The cartridge housing may comprise the housing of the first compartment.

The second compartment may comprise a housing. The housing of the second compartment may comprise a base. The base of the housing of the second compartment may be one or both of the sealing element and the liquid baffle plate. The housing of the second compartment may comprise one or more walls. The one or more walls of the housing of the second compartment may extend from the base. The base and the one or more walls of the housing of the second compartment may be integrally formed. The base and one or more walls of the housing of the second compartment may be distinct elements that are attached or secured to each other. The housing of the second compartment may be a rigid housing. The cartridge housing may comprise the housing of the second compartment.

The cartridge housing may comprise the base of the housing of the first compartment, the walls of the first compartment and the walls of the second compartment. The cartridge housing may consist of the base of the housing of the first compartment, the walls of the first compartment and the walls of the second compartment. The base of the cartridge housing may be the base of the housing of the first compartment.

The air inlet may be a semi-open inlet. The semi-open inlet may be an inlet which permits air or fluid flow in one direction, such as into the cartridge, but at least restricts, preferably prohibits, air or fluid flow in the opposite direction. The semi-open inlet preferably allows air to enter the cartridge. Air or liquid may be prevented from leaving the aerosolgenerating cartridge through the semi-open inlet. The semi-open inlet may for example be a semi-permeable membrane, permeable in one direction only for air, but is air- and liquid-tight in the opposite direction. The semi-open inlet may for example also be a one-way valve.

The mouthpiece may be made from a polymeric material, preferably selected from the group consisting of polypropylene and polycarbonate. The mouthpiece may comprise an air outlet arranged at a proximal end of the mouthpiece.

The cartridge may comprise an airflow channel. The airflow channel may extend from the air inlet of the cartridge housing to the air outlet of the mouthpiece. An aerosol-generating device or system comprising the cartridge may comprise an airflow channel. The airflow channel may extend from an air inlet of the device or system to the air outlet of the mouthpiece.

The mouthpiece may comprise at least part of the airflow channel. The airflow channel may extend at least partially through the mouthpiece to the air outlet of the mouthpiece. The airflow channel may extend from the air inlet of the cartridge housing or the device or system to the air outlet of the mouthpiece. The airflow channel may extend through the first compartment and the second compartment. The airflow channel may extend through the atomizing unit and the liquid storage section. The user may suck on the mouthpiece to draw aerosol into their mouth. Ambient air may be drawn into the cartridge and towards the user through the airflow channel.

The cartridge may comprise a locking means. The locking means may be configured to temporarily lock the atomizing unit in one or both of the first position and the second position.

The locking means may be configured to temporarily lock the support element in one or both of the first position and the second position. The locking means may be configured to permanently locked the atomizing unit in the second position. The locking means may be configured to permanently locked the support element in the second position. The locking means may prevent positional displacement of the atomizing unit relative to one or more of the liquid storage portion, the sealing element and the liquid baffle plate. The support element may comprise the locking means. The locking means may be provided for retaining the atomizing unit in place in one or both of the first position and the second position.

The locking means may be a mechanical locking means. The mechanical locking means may comprise a lip and a detent. For example, the lip may engage with the detent in a snap fit. The lip may be a resiliently deformable lip. The resiliently deformable lip may be disengaged from the detent by applying a sufficient force to overcome the snap fit. Although a mechanical lip and detent have been described, it will be appreciated that other locking means may be provided.

The locking means improves the precision and reliability of the blockage and establishment of fluid communication between the liquid storage portion and the atomizer by stabilizing the relative position of the atomizing unit and the liquid storage portion. The locking means optimizes the precision and reliability of fluid communication between the liquid storage portion and the atomizer by improving and stabilizing the alignment of the first fluid flow conduit and the second fluid flow conduit in the second position. The locking means reduces the risk that the atomizing unit detaches from or falls out of the cartridge.

The atomizing unit may comprise a guide element. The guide element may be a sliding mechanism. The guide element may be configured to direct the movement between the first position and the second position. The guide element optimizes the precision of the movement between the first position and the second position. The guide element optimizes the ease of the movement between the first position and the second position.

The atomizer may comprise a heating element and a porous body. Preferably the porous body may be made from a ceramic material.

In the first position, the atomizing unit may be configured such that fluid communication between the liquid storage portion and the porous body is blocked. In the first position, liquid aerosol-forming substrate of the liquid storage portion may not be delivered to the porous body. The porous body may be configured to absorb liquid aerosol-forming substrate. The porous body may be configured to hold liquid aerosol-forming substrate. The porous body may be in contact with the heating element. In the second position, the atomizing unit may be configured such that the liquid storage portion and the porous body are in fluid communication. The fluid flow channel may extend from the liquid storage portion to the porous body of the atomizer. In the second position, liquid aerosol-forming substrate of the liquid storage portion, preferably by means of the fluid flow channel, may be delivered to the porous body. In the second position, an absorption surface of the porous body of the atomizer may be in fluid communication with the liquid storage portion. In the second position, the absorption surface may absorb liquid aerosol-forming substrate from the liquid storage portion of the cartridge. The liquid aerosol-forming substrate may be transported within the porous body of atomizer from the absorption surface to the heating surface for evaporation. The absorption surface may be arranged adjacent to the fluid flow channel. The absorption surface may be arranged distal to the fluid flow channel.

The heating element may be arranged on a heating surface of the porous body. The heating element may be configured to evaporate the liquid aerosol-forming substrate absorbed by the porous body of the atomizing unit for vaporization. The heating surface of the porous body of the atomizer may be arranged distal to absorption surface. The absorption surface may be separate from the heating surface of the porous body.

The porous body may be made from a material selected from the group consisting of silica (SiC>2) and calcium silicate (Ca2SiC>4). The porous body may be an open-cell porous ceramic body.

In use, the liquid aerosol-forming substrate delivered to the porous body may be vaporized by the heating element.

The cartridge may comprise at least two electrical contacts.

One or both of the base of the cartridge housing and the base of the first compartment may comprise the electrical contacts. The electrical contacts may also be arranged on the heating surface of the porous body. The heating surface may be arranged adjacent to the electrical contacts. The heating surface may be arranged proximal to the electrical contacts.

Power may be supplied to the heating element through the electrical contacts, preferably when the atomizing unit is in the second position. In the first position, power may not be supplied to heating element through the electrical contacts.

The electrical contacts may be made from a material selected from the group consisting of Cu, Zn and Au.

The porous body may have a substantially cuboid shape comprising six surfaces. The heating element may be substantially flat. The heating element may be arranged at one of the six surfaces of the porous body. The absorption surface may be one of the six surfaces. The heating surface may be another of the six surfaces, preferably arranged on an opposing side of the cuboid-shaped porous body.

In the first position, the atomizing unit may be arranged such that one or less of the electrical contacts is in contact with the heating element. In the second position, the atomizing unit may be arranged such that at least two electrical contacts are in contact with the heating element.

In the first position, electrical power may not be supplied to the heating element as only one or less of the electrical contacts is in contact with the heating element. In the second position, electrical power may be supplied to the heating element as at least two electrical contacts are in contact with the heating element. This may ensure that power may not be supplied to the atomizer when fluid communication between the liquid storage portion and the atomizer is blocked, such that the risk of thermal damage to the porous body by the heating element is reduced.

In a second aspect of the invention, an aerosol-generating system is provided. The aerosol-generating system comprises an aerosol-generating device. The aerosol-generating device comprises the cartridge of the invention, a device housing, an electrical power supply and a control element configured to control the supply of power from the power supply. The aerosol-generating system further comprises an aerosol-forming substrate. The aerosolforming substrate is a liquid. The liquid storage portion comprises the aerosol-forming substrate.

The device housing may comprise a receiving section for the cartridge. The cartridge may be configured to be insertable into the receiving section of the device housing. The device may be configured such that the electrical power supply may supply power to the heating element of the cartridge, preferably by means of the electrical contacts of the cartridge.

The cartridge may be configured as a replaceable consumable. The user may replace the cartridge when the supply of the aerosol-forming substrate in the liquid storage portion is diminished or depleted. The used cartridge may be replaced with another cartridge filled to an appropriate amount with aerosol-forming substrate. The cartridge may also be provided without the aerosol-forming substrate, and the user may fill the liquid storage portion with a desired substrate through a liquid port provided on the cartridge. In some embodiments, the liquid storage portion is not refillable by a user.

In a third aspect of the invention, a method for activating a cartridge for an aerosolgenerating device from an inactive transport and storage condition is provided. The method comprises the following steps:

(a) Providing a cartridge according to the invention or an aerosol-generating system according to invention, (b) Moving the atomizing unit into the first position during one or more of transport and storage, and

(c) Moving the atomizing unit into the second position when a consumption experience is desired.

The liquid storage portion may be adapted for storing the liquid aerosol-forming substrate to be supplied to the atomizer. The liquid storage portion may be configured as a container or a reservoir for storing the liquid aerosol-forming substrate. The liquid storage portion may be configured as a replaceable tank or container.

The liquid storage portion may be any suitable shape and size. For example, the liquid storage portion may be substantially cylindrical. The cross-section of the liquid storage portion may, for example, be substantially circular, elliptical, square or rectangular.

The liquid storage portion may comprise a housing. The liquid storage portion may comprise a base. The sealing element may be the base of the liquid storage portion. The sealing element together with the liquid baffle plate may be the base of the liquid storage portion. The housing may comprise a base and one or more walls extending from the base. The base and the one or more walls may be integrally formed. The base and one or more walls may be distinct elements that are attached or secured to each other. The housing may be a rigid housing. The housing of the second compartment may comprise the housing of the liquid storage portion. The cartridge housing may comprise the housing of the liquid storage portion. The liquid storage portion may comprise one or more flexible walls. The flexible walls may be configured to adapt to the volume of the liquid aerosol-forming substrate stored in the liquid storage portion. The housing of the liquid storage portion may comprise any suitable material. The liquid storage portion may comprise substantially fluid impermeable material. The housing of the liquid storage portion may comprise a transparent or a translucent portion, such that liquid aerosol-forming substrate stored in the liquid storage portion may be visible to a user through the housing. The liquid storage portion may be configured such that aerosol-forming substrate stored in the liquid storage portion is protected from ambient air. The liquid storage portion may be configured such that aerosol-forming substrate stored in the liquid storage portion is protected from light. This may reduce the risk of degradation of the substrate and may maintain a high level of hygiene.

The liquid storage portion may be substantially sealed. The liquid storage portion may comprise one or more semi-open inlets. This may enable ambient air to enter the liquid storage portion. The one or more semi-open inlets may be semi-permeable membranes or one-way valves, permeable to allow ambient air into the liquid storage portion and impermeable to substantially prevent air and liquid inside the liquid storage portion from leaving the liquid storage portion. The one or more semi-open inlets may enable air to pass into the liquid storage portion under specific conditions. The liquid storage portion may be refillable. Alternatively, the liquid storage portion may be configured as a replaceable liquid storage portion.

As used herein, an ‘aerosol-generating device’ relates to a device that interacts with an aerosol-forming substrate to generate an aerosol. An aerosol-generating device may be a inhalation device that interacts with an aerosol-forming substrate to generate an aerosol that is directly inhalable into a user’s lungs thorough the user's mouth. An aerosol-generating device may be a holder. The device may be an electrically heated device.

The heating element may be configured to heat the liquid aerosol-forming substrate and vaporize at least a part of the liquid aerosol-forming substrate in order to form an aerosol. The heating element may exemplarily be a mesh heater or a metal plate heater. The heater may exemplarily be a resistive heater which receives electrical power and transforms at least part of the received electrical power into heat energy. The heating element may be configured as an induction heating element. The atomizer may comprise only a single heating element or a plurality of heating elements. The temperature of the heating element or elements is preferably controlled by an electric circuitry.

The portion of the heating element, which is in contact with the aerosol-forming substrate is heated as a result of the electrical current passing through the heating element. The current is supplied by a power supply, such as a battery. In one embodiment, this portion of the heating element is configured to reach a temperature of between about 300°C and about 550°C in use. Preferably, the heating element is configured to reach a temperature of between about 320°C and about 350°C.

The at least one heating element preferably comprises an electrically resistive material. Suitable electrically resistive materials include but are not limited to: semiconductors such as doped ceramics, electrically “conductive” ceramics (such as, for example, molybdenum disilicide), carbon, graphite, metals, metal alloys and composite materials made of a ceramic material and a metallic material. Such composite materials may comprise doped or undoped ceramics. Examples of suitable doped ceramics include doped silicon carbides. Examples of suitable metals include titanium, zirconium, tantalum, nickel and metals from the platinum group. Examples of suitable metal alloys include stainless steel, nickel-, cobalt-, chromium-, aluminium- titanium- zirconium-, hafnium-, niobium-, molybdenum-, tantalum-, tungsten-, tin-, gallium-, manganese- and iron-containing alloys, and super-alloys based on nickel, iron, cobalt, stainless steel, Timetai® and iron-manganese-aluminium based alloys. In composite materials, the electrically resistive material may optionally be embedded in, encapsulated or coated with an insulating material or vice-versa, depending on the kinetics of energy transfer and the external physicochemical properties required. Preferably, the heating element is made from a nickel-chromium (NiCr) alloy. As used herein, the term 'aerosol-forming substrate' is used to describe a substrate capable of releasing upon heating volatile compounds, which can form an aerosol. The aerosol generated from aerosol-forming substrates described herein may be visible or invisible and may include vapors (for example, fine particles of substances, which are in a gaseous state, that are ordinarily liquid or solid at room temperature) as well as gases and liquid droplets of condensed vapors. The aerosol-forming substrate may be stored in the liquid storage portion of the cartridge.

Preferably, the aerosol-forming substrate is a liquid aerosol-forming substrate. A liquid aerosol-forming substrate is a substrate that is liquid at ambient temperature, for example, at about 5 °C to about 45 °C, preferably at about 15 °C to about 30 °C. Liquid aerosol-forming substrates are considered to include liquid solutions, suspensions, dispersions, and the like.

Suitable aerosol forming substrates may include plant-based material. For example, an aerosol-forming substrate may include tobacco or a tobacco-containing material containing volatile tobacco flavor compounds, which are released from the aerosol-forming substrate upon heating. In addition or alternatively, an aerosol-forming substrate may include a nontobacco containing material. An aerosol-forming substrate may include at least one aerosol former. Examples of aerosol formers include polyhydric alcohols, such as triethylene glycol, 1 ,3-butanediol, propylene glycol, and glycerine; esters of polyhydric alcohols, such as glycerol mono-, di- or triacetate; and aliphatic esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate. The aerosol-forming substrate may comprise a single aerosol former. Alternatively, the aerosol-forming substrate may comprise a combination of two or more aerosol formers. As used herein, the term 'aerosol former' is used to describe any suitable known compound or mixture of compounds that, in use, facilitates formation of an aerosol and that is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating article. An aerosol-forming substrate may include other additives and ingredients such as flavorants. Preferably an aerosol-forming substrate includes nicotine. In some embodiments, an aerosol-forming substrate includes glycerol, propylene glycol, water, nicotine and, optionally, one or more flavorant. Preferably, aerosol-forming substrate includes propylene glycol, glycerol, water and one or more flavorant. The aerosol-forming substrate may comprise cannabis-based compounds such as tetrahydrocannabinol (THC) and cannabidiol (CBD).

The power supply may be any suitable power supply, for example a DC voltage source such as a battery. In one embodiment, the power supply is a Lithium-ion battery. Alternatively, the power supply may be a Nickel-metal hydride battery, a Nickel cadmium battery, or a Lithium based battery, for example a Lithium-Cobalt, a Lithium-lron-Phosphate, Lithium Titanate or a Lithium-Polymer battery. The control element may be a simple switch. Alternatively, the control element may be electric circuitry and may comprise one or more microprocessors or microcontrollers.

Features described in relation to one embodiment may equally be applied to other embodiments of the invention.

The invention will be further described, by way of example only, with reference to the accompanying drawings in which:

Fig. 1 shows a side view of the cartridge according to the invention in Fig. 1a with the atomizing unit being in a first position and in Fig. 1 b with the atomizing unit being in a second position;

Fig. 2 shows the cartridge according to the invention with the atomizing unit being in a first position. Fig 2a shows the cartridge from a % view, Fig. 2b shows a side view of the cartridge. Fig. 2c shows a top view of the cartridge and Fig. 2d shows a bottom view of the cartridge;

Fig. 3 shows the cartridge according to the invention with the atomizing unit being in a second position. Fig 3a shows the cartridge from a % view, Fig. 3b shows a side view of the cartridge. Fig. 3c shows a top view of the cartridge and Fig. 3d shows a bottom view of the cartridge.

Fig. 1 shows a side view of the cartridge (100) according to the invention. The cartridge comprises a first compartment (102), a second compartment (104) and a mouthpiece (106). The first compartment comprises an atomizing unit (108). The atomizing unit (108) comprises an atomizer (110). The atomizer comprises a porous body (112) and a heating element (114). The atomizing unit further comprises a slidable support element (116). The support element (116) comprises a flow-controlling element (118) and a second fluid flow conduit (120). The second compartment comprises a liquid storage portion (122). The second compartment comprises a liquid baffle plate (124) and a sealing element (126). The sealing element comprises a second fluid flow conduit (128). The liquid baffle plate comprises a plurality of perforations (130). The cartridge comprises a housing (132). The cartridge housing comprises a base (134). The base of the cartridge housing comprises an air inlet (not shown). The cartridge comprises electrical contacts (136). The cartridge housing encloses the first compartment and the second compartment.

The mouthpiece is arranged at a proximal end (138) of the cartridge. The base of the cartridge housing is arranged at a distal end (140) of the cartridge. The mouthpiece (106) is arranged proximal to the second compartment (104). The second compartment (104) is arranged proximal to the first compartment (102). The first compartment, the second compartment and the mouthpiece are arranged on a central longitudinal axis (142) of the cartridge.

Fig. 1a shows the cartridge with the atomizing unit being in a first position. Fluid communication between the liquid storage portion and the atomizer is blocked by the flowcontrolling element. The flow-controlling element abuts the first fluid flow conduit of the sealing element, such that delivery of liquid aerosol-forming substrate of the liquid storage portion to the atomizer is prevented. The slidable support element is arranged laterally offset from the central longitudinal axis of the cartridge. The heating element of the atomizer is in contact with a single electrical contact.

As fluid communication between the liquid storage portion and the atomizer is blocked, the porous body of the atomizer is kept dry. Accordingly, liquid aerosol-forming substrate cannot leak from the porous body of the atomizer. An aerosol cannot be produced as the porous body does not hold liquid aerosol-forming substrate. As only one electrical contact is in contact with the heating element, power cannot be supplied to the heating element. The cartridge is in an inactive state. The configuration of the cartridge shown in Fig. 1a is adopted when the cartridge is transported or stored.

The atomizing unit is shown to protrude from the cartridge. The user may push the atomizing unit inside the cartridge housing to move the atomizing unit into the second position as shown in Fig. 1b.

Fig. 1b shows the cartridge with the atomizing unit being in a second position. Fluid communication between the liquid storage portion and the atomizer is established. The first fluid flow conduit of the flow-controlling element is arranged to abut the second fluid flow conduit of the sealing element. A fluid flow channel is formed by the perforations of the liquid baffle plate, the second fluid flow conduit of the sealing element and the first fluid flow conduit of the flow-controlling element. Liquid aerosol-forming substrate of the liquid storage portion is delivered to the porous body of the atomizer by means of the fluid flow channel. The porous body of the atomizer is soaked with the liquid aerosol-forming substrate. The atomizing unit is shown to be plane with the cartridge housing.

As both electrical contacts are in contact with the heating element, a closed electrical circuit may be formed when the cartridge is connected to a power supply. The liquid aerosolforming substrate absorbed by the porous body of the atomizer may be vaporized, such that an aerosol is produced. When the cartridge is part of an aerosol-generating device, the user may suck on the mouthpiece to draw in air into the air inlet and the aerosol formed may be inhaled from an air outlet (not shown) of the mouthpiece.

The cartridge of Fig. 1 b is in an active state. The configuration of the cartridge shown in Fig. 1 b is adopted when the cartridge or the aerosol-generating system comprising the cartridge is delivered to the user. When the cartridge in the configuration shown in Fig. 1 b is part of on aerosol-generating system, a consumption experience may be delivered to the user.

Figs. 2a and 2b show a % view and a side view of the cartridge (100) in which the atomizing unit (108) is in the first position as discussed in relation to Fig.1a. Figs. 2a and 2b show more clearly the plurality of perforations (130) of the liquid baffle plate (124). Furthermore, Fig. 2a shows the air outlet (144) of the mouthpiece (106).

Fig. 2c shows layered a top view of the cartridge. Fig. 2c mainly illustrates the relative arrangements of the perforations (130) of the liquid baffle plate (124), the first fluid conduit (120) and the second fluid conduit (128) in the first position. The first fluid conduit is shown to be laterally offset from the second fluid conduit. The first fluid conduit is not aligned with the second fluid conduit. The first fluid conduit and the second fluid conduit do not form a fluid flow channel. Fluid communication between the liquid storage portion and the atomizer is blocked by the flow-controlling element. Liquid aerosol-forming substrate may not be delivered to the atomizer.

Fig. 2d shows a bottom view of the cartridge illustrating the configuration of the electrical contacts.

Figs. 3a and 3b show a % view and a side view of the cartridge (100) in which the atomizing unit (108) is in the second position as discussed in relation to Fig.1b. Figs. 3a and 3b show more clearly the plurality of perforations (130) of the liquid baffle plate (124). Furthermore, Fig. 3a shows the air outlet (144) of the mouthpiece (106) and the position of the atomizing unit (108) in a receiving section.

Fig. 3c shows a layered top view of the cartridge. Fig. 3c mainly illustrates the relative arrangements of the perforations (130) of the liquid baffle plate (124), the first fluid conduit and the second fluid conduit (128) in the second position. The first fluid conduit is shown to abut the second fluid conduit. The first fluid conduit is aligned with the second fluid conduit. The first fluid conduit and the second fluid conduit form a fluid flow channel. Fluid communication between the liquid storage portion (122) and the atomizer proceeds through the fluid flow channel. Liquid aerosol-forming substrate is delivered to the porous body (112) of the atomizer.

Fig. 3d shows a bottom view of the cartridge illustrating the configuration of the electrical contacts.

Claims

1 . A cartridge for an aerosol-generating device comprising a liquid storage portion and an atomizing unit wherein the atomizing unit comprises an atomizer, wherein the atomizing unit is configured to be movable between a first position and a second position, wherein the atomizing unit is configured such that in the first position fluid communication between the liquid storage portion and the atomizer is blocked, and wherein the atomizing unit is configured such that in the second position the liquid storage portion and the atomizer are in fluid communication.

2. The cartridge according to claim 1 , wherein the atomizing unit is configured to be removably insertable into a receiving section of the cartridge.

3. The cartridge according to any preceding claim, wherein the atomizing unit is configured to be movable between the first position and the second position in a direction substantially perpendicular to a longitudinal axis of the cartridge.

4. The cartridge according to any preceding claim, wherein the atomizing unit comprises a flow-controlling element, wherein the flow-controlling element comprises at least one first fluid flow conduit, wherein in the first position the flow-controlling element is arranged such that fluid communication between the liquid storage portion and the atomizer is blocked by the flow-controlling element and wherein in the second position the flow-controlling element is arranged such that the liquid storage portion and the atomizer are in fluid communication by means of the first fluid flow conduit.

5. The cartridge according to claim 4, wherein the cartridge comprises a sealing element, preferably made from silicone, arranged proximal to the atomizing unit, wherein the liquid storage portion is arranged proximal to the sealing element, wherein the sealing element comprises at least one second fluid flow conduit, wherein in the first position the first fluid flow conduit of the flow-controlling element and the second fluid flow conduit of the sealing element are arranged fully offset to each other, and wherein in the second position, the first fluid flow conduit of the flow-controlling element and the second fluid flow conduit of the sealing element are arranged to abut each other such that a fluid flow channel is formed, wherein the liquid storage portion and the atomizer are in fluid communication by means of the fluid flow channel.

6. The cartridge according to claim 5, wherein the cartridge comprises a liquid baffle plate, wherein the liquid baffle plate comprises at least one perforation, and wherein the liquid baffle plate is arranged proximal to the sealing element.

7. The cartridge according to any of claims 4 to 6, wherein one or both of the flowcontrolling element according to any of claims 4 and 5 and the liquid baffle plate according to claim 6 is made from a polymeric material, preferably selected from the group consisting of polypropylene, polycarbonate and copolyesters.

8. The cartridge according to any preceding claim, wherein the cartridge comprises a mouthpiece and a cartridge housing, wherein the cartridge housing comprises a first compartment, a second compartment and at least one air inlet, wherein the first compartment comprises the atomizing unit, wherein the second compartment comprises the liquid storage portion and wherein the second compartment is arranged proximal to the first compartment and wherein the mouthpiece is arranged proximal to the second compartment.

9. The cartridge according to any preceding claims, wherein the cartridge comprises a locking means, wherein the locking means is configured to temporarily lock the atomizing unit in one or both of the first position and the second position.

10. The cartridge according to any preceding claim, wherein the atomizer comprises a heating element and a porous body, wherein preferably the porous body is made from a ceramic material.

11. The cartridge according to claim 10, wherein the cartridge comprises at least two electrical contacts.

12. The cartridge according to any of claims 10 and 11, wherein the porous body has a substantially cuboid shape comprising six surfaces, wherein the heating element is substantially flat and wherein the heating element is arranged at one of the six surfaces of the porous body.

13. The cartridge according to claim 11 or claim 12, wherein in the first position the atomizing unit is arranged such that one or less of the electrical contacts is in contact with the heating element and wherein in the second position, the atomizing unit is arranged such that at least two electrical contacts are in contact with the heating element.

14. An aerosol-generating system comprising: an aerosol-generating device comprising the cartridge of any of claims 1 to 13, a device housing, an electrical power supply and a control element configured to control the supply of power from the power supply, and an aerosol-forming substrate, wherein the aerosol-forming substrate is a liquid, and wherein the liquid storage portion comprises the aerosol-forming substrate.

15. A method for activating a cartridge for an aerosol-generating device from an inactive transport and storage condition comprising the following steps:

(c) Providing a cartridge according to any of claims 1 to 13 or an aerosol-generating system according to claim 14,

(d) Moving the atomizing unit into the first position during one or more of transport and storage, and (c) Moving the atomizing unit into the second position when a consumption experience is desired.