Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
  • A24B15/10—Chemical features of tobacco products or tobacco substitutes
  • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
  • A24B15/167—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
  • A24B15/18—Treatment of tobacco products or tobacco substitutes
  • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
  • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
• • 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
  • A24F40/42—Cartridges or containers for inhalable precursors
• • 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
  • A24F40/46—Shape or structure of electric heating means
• • 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
  • A24F40/50—Control or monitoring
  • A24F40/53—Monitoring, e.g. fault detection
• • 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
  • A24F40/10—Devices using liquid inhalable precursors
• • 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
  • A24F40/50—Control or monitoring

Definitions

• the present invention relates to a consumable for being inserted into an aerosol generating device. More specifically the consumable comprising a first liquid component and a second liquid component, wherein the second liquid component s configured to change an electrical resistance of a heating element.
• the present invention also relates to a method for manufacturing the consumable.
• An aerosol generation device or e-cigarette, is now a mainstream product to simulate a traditional tobacco cigarette.
• aerosol generation devices There are many types of aerosol generation devices, and the ones which still have tobacco or volatile substrate inside is one of the popular types.
• e-cigarette There is also another type of e-cigarette, the operation method of which is to evaporate liquid to form an aerosol. Especially the e-cigarette operating with liquid is continuously growing in popularity.
• E-cigarettes operating with liquid are usually arranged with a heating element and a liquid container, wherein when the user draws on the mouthpiece, liquid is moved from the liquid container towards the heating element, where the liquid is vaporized.
• the vaporized liquid can be inhaled by the user until the liquid container is emptied.
• an unpleasant dry puff i.e., a (hot) puff that does not comprise vaporized liquid or only small amounts of vaporized liquid is generated and inhaled by the user. Since in such systems the liquid container is often not accessible for the user during smoking the device, it may be difficult for the user to identify the remaining amount of liquid in the smoking article and replace the liquid before the container is emptied.
• a consumable for being inserted into an aerosol generating device comprising an aerosol generating liquid configured to be brought into contact with a heating element.
• the aerosol generating liquid comprising a first liquid component configured to generate an inhalable aerosol when being heated by a heating element, and a second liquid component configured to change an electrical resistance of the heating element when coming into contact with the heating element.
• the change in electrical resistance of the heating element may be used to avoid a dry puff. For example, the change in electrical resistance may be determined and based on this determination, the provision of power to the heating element can be stopped.
• first liquid component has a first density
• second liquid component has a second density lower than the first density
• first liquid component has a first electrical resistance
• second liquid component has a second electrical resistance different to the first electrical resistance
• the second liquid component comes into contact with the heating element only, when the amount of liquid in the liquid container is low. Accordingly, the normal operation of the aerosol generating device is ended only if the amount of liquid in the liquid container is low. Moreover, providing the second liquid component with a second electrical resistance lower or higher than the first electrical resistance, a change of electrical resistance at the heating element is determined, enabling a detection of a dry puff.
• the first density is between 1,000 and 1,500 kg/m 3 , preferably between 1,100 and 1,400 kg/m 3 , more preferably between 1,200 and 1,300 kg/m 3 and most preferably between 1,250 kg/m 3 and 1,270 kg/m 3
• the second density is between 700 and 1,000 kg/m 3 , preferably between 800 and 950 kg/m 3 , and most preferably between 850 and 900 kg/m 3 .
• the first liquid component is configured to not change or change only to an unsignificant amount the electrical resistance of the heating element, preferably, the unsignificant amount is a change of electrical resistance of at most 5%, more preferably of at most 4%, even more preferably of at most 3% and most preferably of at most 1%.
• the first liquid component comprises propylene glycol, PG, and glycerol, VG
• the second liquid component is preferably immiscible with the first liquid component and preferably comprises a food-grade oil, more preferably a coconut oil or a sunflower oil.
• PG and VG are well known ingredients for aerosol generating liquids that have proven to provide an aerosol with good inhaling properties.
• Providing a second liquid component that is immiscible with the first liquid component ensures that the normal operation of the aerosol generating device is stopped only when the liquid container is about to empty.
• Oils, such as food-grade oils as coconut oil or sunflower oil generally provide for a lower density than PG/VG and a lower electrical resistance than PG/VG. Accordingly, each of sunflower oil and coconut oil provide for good base materials for the second liquid component.
• the first liquid component and the second liquid component are configured to form an inhomogeneous mixture, preferably an emulsion.
• An inhomogeneous mixture such as an emulsion, make sure that the normal operation of the aerosol generating device is stopped only when the liquid container is about to empty.
• the second liquid component is configured to change the electrical resistance of the heating element by at least 10%, preferably at least 20 %, most preferably at least 30%, when coming into contact with the heating element.
• the second liquid component is configured to increase the electrical resistance of the heating element by at least 10%, preferably at least 20 %, most preferably at least 30%, or to decrease the electrical resistance of the heating element by at least 10%, preferably at least 20 %, most preferably at least 30%, when coming into contact with the heating element.
• the consumable and/or the aerosol generating device comprise the heating element, and wherein the heating element is preferably a wick connected to a power supply.
• the interface surface with the aerosol generating liquid increases, such that the change in electrical resistance caused by the second liquid component increases. Accordingly, the determination of the dry puff is facilitated/improved.
• the second liquid component is configured to come into contact with the heating element only when at least 90% and most preferably at least 95% of the first liquid component has been removed from the consumable.
• the consumable and/or the aerosol generating device comprises a sensor for performing a measurement of the electrical resistance of the heating element.
• the consumable and/or the aerosol generating device comprises a processor configured to determine an electrical resistance difference of the heating element based on the measured electrical resistance of the heating element, and wherein the processor is configured to stop the heating of the heating element based on the electrical resistance difference.
• the consumable and/or the aerosol generating device comprises a light source, preferably an LED, more preferably a colored LED configured to emit a light based on the determined electrical resistance difference, or the processor may be configured to determine that the consumable is a consumable for being heated by the aerosol generating device based on the measured electrical resistance of the heating element.
• the user of the aerosol generating device can be informed of the low remaining amount of aerosol generating liquid and that a dry puff is imminent. Moreover, by determining that the consumable is for being heated by the aerosol generating device, heating and generating an aerosol from harmful substances can be avoided.
• the second liquid component is configured to provide substantially less aerosol when heated than the first liquid component.
• the user is able to identify that the amount of remaining aerosol generating liquid is low. Moreover, providing at least some aerosol avoids an unpleasant dry puff.
• a further aspect relates to an aerosol generating system comprising a consumable according to any of the above aspects, and an aerosol generating device comprising a power supply for providing electrical power to the heating element of the consumable.
• a further aspect relates to a method for providing an inhalable aerosol to a user by heating by means of a heating element an aerosol generating liquid in a consumable of the above aspects, the method comprising the steps of measuring the electrical resistance of the heating element, determining a difference between the measured electrical resistance of the heating element and a reference electrical resistance of the heating element, and controlling the heating element based on the determined difference.
• the heating element can be controlled based on the changed electrical resistance.
• the heating element can be controlled based on the remaining amount of aerosol generating liquid.
• the reference electrical resistance is a previous electrical resistance measurement of the heating element.
• a change in electrical resistance based on the second liquid component coming into contact with the heating element can be determined.
• controlling the heating element based on the determined difference comprises shutting off the heating element, preferably by ceasing provision of power to the heating element.
• the heating element can be shut off once the second liquid component comes into contact with the heating element.
• step of controlling the heating element further comprises determining whether the difference between the measured electrical resistance and the reference electrical resistance indicates a change in electrical resistance, preferably an increase of at least 10%, more preferably of at least 20 %, and most preferably of at least 30%, or preferably a decrease of at least 10%, more preferably of at least 20 %, and most preferably of at least 30%, and stopping the heating of the heating element based on the determination that the difference indicates the change in electrical resistance.
• At least 10%, preferably at least 20 %, most preferably at least 30% facilitate determination of the change in electrical resistance.
• standard-grade sensors can be used, and expensive, high-performance sensors can be avoided.
• Another aspect further comprises determining the filling level of the consumable based on the difference between the measured electrical resistance and the reference resistance; and, preferably, providing an indication to the user indicative of the determined filling level, wherein the consumable and/or the aerosol generating device preferably comprises a light source, preferably an LED, more preferably a colored LED configured to emit a light based on the determined electrical resistance difference.
• the consumable and/or the aerosol generating device preferably comprises a light source, preferably an LED, more preferably a colored LED configured to emit a light based on the determined electrical resistance difference.
• the user of the aerosol generating device can be informed of the low remaining amount of aerosol generating liquid and that a dry puff is imminent.
• a further aspect relates to a method for manufacturing the consumable according to the above aspects, comprising the steps of providing a liquid container in an upside down position, inserting a second liquid component into the liquid container, subsequently, inserting a first liquid component into the liquid container, the first liquid component being configured to generate an inhalable aerosol when being heated, inserting, into the consumable, a heating element configured to heat the first liquid component and the second liquid component, wherein the second liquid component is configured to change an electrical resistance of the heating element when coming into contact with the heating element, and finalizing the consumable by turning the consumable in an upright position.
• the consumable By manufacturing the consumable according to the above steps, it is ensured that the first liquid component and the second liquid component are provided in a way that mixture of the two is reduced to a minimum. Accordingly, it is possible to provide a consumable with two liquid components, wherein the first liquid is arranged such that it is or can be brought into contact with the heating element, while the second liquid component will be brought into contact with the heating element only once the remaining amount of liquid is low.
• a casing 160 of a consumable 100 for being inserted into an aerosol generating device 200 is shown.
• the casing 160 comprises a liquid container 161 for inserting an aerosol generating liquid 110.
• the casing 160 comprises a mouthpiece 164 configured to be received by the mouth of a user. The user may draw on the mouthpiece 164 to inhale an inhalable aerosol generated from the consumable 100.
• Fig 1.b shows the consumable 100 comprising the casing 160.
• the liquid container 161 comprises the aerosol generating liquid 110.
• the consumable 100 comprises a heating element 170 for heating the aerosol generating liquid 110.
• the heating element 170 is in proximity to or inside the liquid container 161 and configured to be brought into contact with the aerosol generating liquid 110 to heat the aerosol generating liquid 110 to generate an inhalable aerosol.
• the heating element 170 is a wick and coil.
• the electrical resistance of the heating element is at least 0.3 Ohm, more preferably at least 0.35 Ohm, even more preferably at least 0.5 Ohm, even more preferably at least 1 Ohm, and most preferably at least 1.5 Ohm, and/or at most 3.0 Ohm, preferably at most 2.8 Ohm, most preferably at most 2.7 Ohm.
• the heating element 170 is configured to receive electrical power from a power source, such as a battery.
• the aerosol generating device 200 comprises the power source.
• the consumable 100 and the aerosol generating device 200 comprise a terminal 172.
• the terminal 172 is configured to enable flow of electrical power from the power source in the aerosol generating device 200 to the heating element 170 in the consumable 100.
• a controller is configured to control the provision of power from the power source to the heating element 170.
• the controller may be a processor configured to execute code stored on a memory.
• the controller may be part of the consumable 100 or of the aerosol generating device 200. In other examples, the controller and /or the power source are part of the aerosol generating device 200.
• the casing 160 comprises one or more sensors.
• a first sensor may be a sensor for measuring an electrical resistance of the heating element 170.
• the first sensor is configured to determine electrical resistance changes of the heating element in a range between 0.05 to 1.05 Ohm, preferably in a range between 0.1 and 1.0 Ohm, more preferably in a range between 0.3 and 0.8 Ohm and most preferably in a range between 0.5 and 0.7 Ohm.
• the first sensor is configured to transmit a signal to the controller.
• a second sensor may be a sensor for measuring an inhalation of a user at the consumable 100.
• the second sensor is configured to transmit a signal to the controller.
• the one or more sensors may be connected to the terminal 172 to transmit a signal generated in the consumable 100 from the consumable 100 to the aerosol generating device 200.
• the mouthpiece 164 is preferably allocated at a first end of the casing 162 and the heating element 170 is preferably allocated at a second end of the casing 163, opposite the first end of the casing 162, as shown in the example in Fig. 1b .
• the consumable 100 is a removable consumable, configured to be inserted into and removed from the aerosol generating device 200.
• the consumable 100 may be a single use consumable without the possibility of refill the aerosol generating liquid 110 in the liquid container 161.
• the consumable 100 may be a refillable consumable, wherein the terminal 172 is configured to receive aerosol generating liquid 110 to refill the aerosol generating liquid 110 in the liquid container 161.
• the consumable 100 comprises the aerosol generating device 200.
• the consumable 100 may be a single use consumable without the possibility of refill the aerosol generating liquid 110 in the liquid container 161.
• the consumable 100 comprises the aerosol generating device 200
• the consumable 100 may be a refillable consumable with the terminal 172 configured to receive aerosol generating liquid 110 to refill the aerosol generating liquid 110 in the liquid container 161.
• the aerosol generating liquid 110 comprises a first liquid component 111 and a second liquid component 112.
• the first liquid component 111 may comprise propylene glycol, PG, and/or glycerol, VG.
• the first liquid component 111 is configured to generate an inhalable aerosol when being heated by the heating element 170. That is, once the first liquid component 111 reaches a certain temperature, it turns into an inhalable aerosol from a liquid.
• the first liquid component 111 has a first density. In an example, the first density is between 1,000 and 1,500 kg/m 3 , preferably between 1,100 and 1,400 kg/m 3 , more preferably between 1,200 and 1,300 kg/m 3 and most preferably between 1,250 kg/m 3 and 1,270 kg/m 3 .
• the first liquid component 111 has a first electrical resistance.
• the aerosol generating liquid 110 consists mostly of the first liquid component 111.
• the aerosol generating liquid 110 may comprise at least 50 wt.%, preferably at least 60 wt.%, more preferably at least 70 wt.%, even more preferably at least 80 wt.% and most preferably at least 90 wt.% first liquid component 111.
• the aerosol generating liquid 110 comprises at least 95 wt.% first liquid component 111.
• the second liquid component 112 is configured to generate significantly less aerosol when heated compared to the first liquid component 111.
• the evaporation temperature of the second liquid component 112 may be substantially higher than the evaporation temperature of the first aerosol generating liquid 111.
• the second aerosol generating liquid 112 if heated to the certain temperature (at which the first aerosol generating liquid evaporates), the second aerosol generating liquid 112 will generate none or only very little aerosol.
• the second liquid component 112 has a second electrical resistance lower than the first electrical resistance.
• the second liquid component is configured to decrease the electrical resistance of the heating element 170, preferably by at least 10%, preferably at least 15 %, most preferably at least 20%, when coming into contact with the heating element.
• the medium around the heating element 170 influences the electrical resistance of the heating element 170 by facilitating electrical flow through the surrounding medium.
• the electrical resistance of the aerosol generating liquid 110 in contact with the heating element 170 changes if the amount of second liquid component 112 in contact with the heating element 170 increases, relative to the amount of second liquid component 112 in contact with the heating element 170. Accordingly, the more second liquid component 112 is in contact with the heating element 170, the higher or lower the electrical resistance of the heating element 170 becomes.
• electrical resistance of the wick and coil may change if the wick is soaked with second aerosol generating liquid 112, instead of being soaked with first aerosol generating liquid 111.
• the second liquid component 112 has a second density lower than the first density.
• the second density is between 700 and 1,000 kg/m 3 , preferably between 800 and 950 kg/m 3 , and most preferably between 850 and 900 kg/m 3 .
• the second liquid component 112 is immiscible with the first liquid component 111 and preferably comprises a food-grade oil, more preferably a coconut oil or a sunflower oil. With this, the first liquid component 111 and the second liquid component 112 form an inhomogeneous mixture, preferably an emulsion.
• the second liquid component 112 has the second density and the first liquid component 111 has the first density
• the second liquid component 112 floats on top of the first liquid component 111. Accordingly, as long as the consumable 100 has a relatively high amount of remaining aerosol generating liquid 110, only the first liquid component 111 is in contact with the heating element 170. By generating the aerosol from the first liquid component 111, the amount of first liquid component 111 in the aerosol generating liquid 110 decreases. Since the second liquid component 112 does not generate a substantial amount of aerosol when heated, the amount of second liquid component 112 in the aerosol generating liquid 110 increases relative to the amount of first liquid component 111 in the aerosol generating liquid.
• the amount of first liquid component 111 in the aerosol generating liquid 110 increases.
• the overall amount of aerosol generating liquid 110 decreases.
• the electrical resistance of the second liquid component 112 is lower than the electrical resistance of the first liquid component 111, the electrical resistance of the heating element 170 effectively decreases (as the electrical resistance of the surrounding medium of the heating element 170 influences the electrical resistance of the heating element).
• the electrical resistance is measured periodically.
• the electrical resistance of the heating element 170 was in the range between 0.3 and 3.0 Ohm, wherein particular examples had an electrical resistance of or around 0.35 Ohm (Example 1), 1.8 Ohm (Example 2) and 2.6 Ohm (Example 3).
• Fig. 3a shows an exemplary heating element 170 in contact with the first liquid component 111.
• the heating elements 170 in the example shown in Fig 3a is a wick and coil heating element.
• the wick of the heating element is soaked with the first liquid component 111.
• the electrical resistance of the heating element 170 was 2.6 Ohm (which is similar the resistance of the exemplary coil without any aerosol generating liquid 110).
• the first liquid component 111 did not significantly change the electrical resistance of the heating element 170.
• Fig. 3b shows the exemplary heating element 170 in contact with the second liquid component 112.
• the heating element 170 shown in Fig. 3b is a similar wick and coil heating element as shown in Fig.
• the heating element 170 is soaked with the second liquid component 112.
• the electrical resistance of the wick soaked with second liquid component 112 was 2.0 Ohm. This means, compared to the electrical resistance of the heating element 170 soaked with fist liquid component 111, the electrical resistance of the heating element 170 soaked with second liquid component 112 decreased by around 0.6 Ohm, or 23%. In other exemplary measurements, the electrical resistance changes were in a range between 0.1 and 1 Ohm, in particular in the range between 0.5 to 0.7 Ohm. This change in resistance was measured by an AD 5933 chip connected to the controller and to the wick of the consumable 100. The AD 5933 chip is a standard chip commonly found in e-cigarette electronics.
• the second liquid component 112 is configured to come into contact with the heating element only when at least 90% and most preferably at least 95% of the first liquid component 111 has been removed from the consumable 100. This can be achieved by setting a certain ratio between the first and second liquid components and choosing specific substances as first and second liquid components.
• certain changes in the electrical resistance may be associated with certain remaining amounts of aerosol generating liquid 110 (or first liquid component 111, respectively).
• a x % change in electrical resistance may correspond to a x% decrease in aerosol generating liquid 110 (or first liquid component 111, respectively)
• a 2x % change in electrical resistance may correspond to a y% decrease in aerosol generating liquid 110.
• the remaining amount of aerosol generating liquid 110 can be determined by determining the change in electrical resistance.
• the consumable 100 and/or the aerosol generating device 200 comprises the controller, wherein the controller is configured to determine the change in electrical resistance of the heating element 170 based on the measured electrical resistance of the heating element 170 and is configured to stop the heating of the heating element 170 based on the determined electrical resistance difference.
• the controller may also be configured to determine only when the aerosol generating liquid 110 has been used such that a further puff will not be pleasant for the user.
• An unpleasant puff is a puff where only a little aerosol is generated due to the absence of sufficient first aerosol generating liquid 111 in the vicinity of the heating element 170. Such a puff is also referred to as a "dry puff'.
• the fry puff may also have a substantially higher temperature as a "normal", i.e., pleasant puff, which may cause irritation in the throat of the user.
• the aerosol generating device 200 is shown.
• the consumable 100 is inserted into the aerosol generating device 200.
• the aerosol is consumed by the user by drawing on the mouthpiece 164 of the consumable 100.
• the consumable 100 and/or the aerosol generating device 200 comprises a light source 210, preferably an LED, more preferably a colored LED configured to emit a light based on the determined electrical resistance difference.
• the aerosol generating device 200 comprises the light source 210.
• the light source 210 is a colored LED.
• the aerosol generating device 200 may comprise a vibrating means connected to the controller. In an example, the vibrating means and the light source 210 are connected to the controller.
• the controller may be configured control the LED such that a light is emitted based on a certain amount of detected change in electrical resistance of the heating element 170. For example, a light may be emitted at a determined change of the electrical resistance of around 15%. Such a change of electrical resistance may indicate that a significant portion of the aerosol generating liquid 110 has been used.
• the controller may be configured to make the vibrating means vibrate at a determined change of the electrical resistance of the heating element 170 of around 20%. With this, the user may be notified that a significant amount of aerosol generating liquid 110 has been used in the consumable 100 (through the emitted light) and may be notified once the consumable 100 is fully depleted of aerosol generating liquid 110 (through vibration).
• Another aspect of the invention is directed to a method for providing an inhalable aerosol to a user by heating by means of the heating element 17 the aerosol generating liquid 110 in the consumable 110, as shown in Fig. 6 .
• the electrical resistance of the heating element 170 is measured S110.
• the electrical resistance of the heating element 170 is measured by the one or more sensors.
• the reference electrical resistance of the heating element 170 is stored in a memory connected to the controller.
• the reference electrical resistance of the heating element 170 may be a resistance value characteristic for the material of the heating element 170 or may be a previous electrical resistance measurement of the heating element 170.
• the resistance value characteristic for the material of the heating element 170 corresponds to a resistance of the heating element 170 that is measured when no aerosol generating liquid 110 is in contact with the heating element 170 or to a resistance that is measured when substantially only the first aerosol generating liquid 111 is in contact with the heating element 170.
• the previous electrical resistance measurement corresponds to a resistance that is measured in a previous measurement when the aerosol generating liquid 110 is in contact with the heating element 170. That is, when the first and/or the second aerosol generating liquid is in contact with the heating element 170.
• the heating element 170 is controlled (by the controller) based on the determined difference S130.
• the change in electrical resistance may indicate that the remaining amount of aerosol generating liquid 110 in the consumable 100 is low.
• the controller may shut off the heating element 170, preferably by ceasing provision of power to the heating element 170.
• the controller may continue provision of electrical power to the heating element 170.
• a remaining amount of aerosol generating liquid 110 in the container 100 is sufficient, if mostly first aerosol generating liquid 111 is in contact with the heating element 170 such that an inhalable puff of aerosol is generated for a user (there is no substantial amount of second aerosol generating liquid 112 in contact with the heating element 170).
• a substantial amount of second aerosol generating liquid 112 is in contact with the heating element 170, such that a complete puff is not generated (as the second aerosol generating liquid 112 generates only little to no aerosol at the certain temperature of the heating element 170).
• a complete puff is a puff that is to be expected by the user during normal use, i.e., a puff in which a relatively large amount of first aerosol generating liquid 111 is turned into an aerosol. Such a puff is experienced as normal by the user.
• An incomplete puff is a puff that is experienced as not "normal” by the user. This means, a puff that is experienced as harsh, relatively hot, relatively wet, relatively hard to draw or produces a relatively small amount of aerosol.
• an incomplete puff may be a puff in which the amount of aerosol is below 60%, preferably below 50%, more preferably below 40% even more preferably below 30%, even more preferably below 20% and most preferably below 10% of the amount of aerosol in a " normal " puff, i.e., in a puff that is generated when mostly/only first aerosol generating liquid 111 is turned into an aerosol.
• the incomplete puff may be a puff in which a substantial amount of second aerosol generating liquid 112 is in contact with the heating element 170.
• the method may continue with a step of providing a feedback to the user S160.
• the feedback may be haptic feedback, such as a vibration feedback from the vibrating means, an acoustic feedback, such as the provision of a sound from an acoustic means, or an optical feedback, such as the provision of a light from the light source 210.
• the above method may also be implemented as executable code executable by a processor of an aerosol generating device 200 configured to receive the consumable 100.
• FIG. 4a and bb Another aspect of the invention relates to a method of filling the consumable 100 with the aerosol generating liquid 110. This is shown in Figs. 4a and bb.
• a first step S200 the consumable 100 is oriented such that the side at which the terminal 172 of Fig. 1b is allocated (the side of the mouthpiece) is at a top position (directed to in a direction opposite a floor of the surrounding).
• the container 161 of the consumable 100 is cleaned S210.
• the second aerosol generating liquid 112 preferably coconut oil
• the liquid container 161 of the consumable 100 preferably through an injection nozzle, as shown in Fig. 5a .
• the second aerosol generating liquid 111 1.7ml is filled into the liquid container 161 of the consumable 100, as shown in Fig. 5b .
• the aerosol generating liquid has a ratio of first aerosol generating liquid 111 to second aerosol generating liquid 112 between 8:1 and 25:1.
• other components such as the heating element 170, the terminal 172 and preferably gaskets are inserted into the consumable 100 S240.
• the consumable is sealed and closed S250.
• the consumable is rotated such that the mouthpiece side of the consumable 100 (see, Fig. 1b ) is in the top position.
• the second liquid component 112 has a density lower than the first liquid component 111
• the second liquid component 112 is floating on top of the first liquid component 111 due to the second density being lower than the first density.
• a consumable 100 was obtained by applying the above method.
• the consumable 100 had the first aerosol generating liquid 111 with the first density and the second aerosol generating liquid 111 with the second density, wherein the first and second liquid components were immiscible.
• Mixing tests were performed with the consumable 100 in a lab.
• the second liquid component 112 did not mix with the first liquid component 111 and remained floating on top of the first liquid component 111 even after heavy shaking.
• the first aerosol generating liquid 111 (having the higher first density) is allocated in the proximity of / in contact with the heating element 170.
• the first aerosol generating component 111 is used and the aerosol generating liquid level drops, while the second liquid component remains on top and slowly approaches the heating element 170, until it replaces the first liquid component 111 in the proximity / in contact with the heating element 170.

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Citations (5)

• 2024
  • 2024-04-15 EP EP24170245.5A patent/EP4635309A1/fr active Pending

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