EP2967141A1 - Article à fumer électronique - Google Patents

Article à fumer électronique

Info

Publication number
EP2967141A1
EP2967141A1 EP14712546.2A EP14712546A EP2967141A1 EP 2967141 A1 EP2967141 A1 EP 2967141A1 EP 14712546 A EP14712546 A EP 14712546A EP 2967141 A1 EP2967141 A1 EP 2967141A1
Authority
EP
European Patent Office
Prior art keywords
smoking article
electronic smoking
capillary
capillary tube
heater
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14712546.2A
Other languages
German (de)
English (en)
Inventor
Christopher S. Tucker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Altria Client Services LLC
Original Assignee
Altria Client Services LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Altria Client Services LLC filed Critical Altria Client Services LLC
Publication of EP2967141A1 publication Critical patent/EP2967141A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0001—Details of inhalators; Constructional features thereof
    • A61M15/0003—Details of inhalators; Constructional features thereof with means for dispensing more than one drug
    • 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
    • A24F40/30—Devices using two or more structurally separated inhalable precursors, e.g. using two liquid precursors in two cartridges
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/48—Fluid transfer means, e.g. pumps
    • A24F40/485—Valves; Apertures
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/04—Sprayers or atomisers specially adapted for therapeutic purposes operated by the vapour pressure of the liquid to be sprayed or atomised
    • A61M11/041—Sprayers or atomisers specially adapted for therapeutic purposes operated by the vapour pressure of the liquid to be sprayed or atomised using heaters
    • A61M11/042—Sprayers or atomisers specially adapted for therapeutic purposes operated by the vapour pressure of the liquid to be sprayed or atomised using heaters electrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/06—Inhaling appliances shaped like cigars, cigarettes or pipes
    • 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
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/001—Particle size control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0001—Details of inhalators; Constructional features thereof
    • A61M15/0021—Mouthpieces therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
    • A61M2016/0018—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling
    • A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8206—Internal energy supply devices battery-operated

Definitions

  • An electronic smoking article comprising a first capillary aerosol generator which produces a first aerosol of a first liquid material including flavor material and a second capillary aerosol generator which produces a second aerosol of a second liquid material, the second liquid material including nicotine.
  • the first aerosol has a first particle size distribution and the second aerosol has a second particle size distribution.
  • a method of forming an aerosol containing two particle size distributions comprises supplying a first liquid containing flavor material to a first capillary tube, supplying a second liquid containing nicotine to a second capillary tube, simultaneously heating the first, capillary tube and the second capillary tube to a temperature sufficient to volatilize the first liquid and the second liquid to form a first vapor and a second vapor, mixing the first vapor with air to produce a first aerosol, mixing the second vapor wilh air to produce a second aerosol, and combining the first and second aerosols in a mixing chamber.
  • the heating of the first capillary tube and the heating of the second capillary Lube can occur within a puff cycle at different times within the puff cycle.
  • the heating of the first capillary tube and the heating of the second capillary tube occur within a puff cycle and achieve different temperatures within the puff cycle.
  • Figure 1 is a side view of an electronic smoking article.
  • Figure 2 is a cross-sectional view of the electronic smoking article of Figure
  • Figure 3 is an illustration of a capillary tube having a constriction adjacent an outlet of the capillary tube.
  • Figure 4 is a cross-sectional view of a second embodiment of an electronic smoking article including two capillary aerosol generators.
  • An electronic smoking article such as an electronic cigarette or an electronic cigar, is described herein which produces an aerosol having two different particle size distributions.
  • a first particle size distribution is formed using a first capillary aerosol generator having a first liquid supply reservoir that contains liquid material.
  • a second particle size distribution is formed using a second capillary aerosol generator having a second liquid supply reservoir that contains liquid material.
  • the first liquid material can include flavor material and (he second liquid material can include nicotine.
  • the first liquid supply reservoi and the second liquid supply reservoir can contain liquids having di ferent viscosities.
  • the aerosol can be tailored to provide desired flavor and/or therapeutic compositions.
  • the flavor compounds can have a larger median particle size so as to be deposited in the mouth and throat, while functional compounds, such as nicotine or therapeutic compounds can be provided in smaller particle sizes so as to deliver the particles deeper into the lower respiratory tract.
  • an electronic smoking article 60 comprises a replaceable cartridge (or first section) 70 and a reusable fixture (or second section) 72, which arc coupled together at a threaded joint 74 or by other convenience such as a snug-fit, snap- tit, detent, clamp and/or clasp.
  • the first section 70 can house a mouth-end insert 20, two capillary tubes 18a, 18b, two heaters 19a, 19b to heat at least a portion of each capillary tube 18a, 18b (which may comprise a heatable portion 19a, 19b of the capillary tube 18a, 18b itself) and two liquid supply reservoirs 14a, 14b.
  • the second section 72 can house a power supply 12, control circuitry 1 1 and a puff sensor 16. A threaded portion of the section 72 can be connected to a battery charger when not connected to the first section 70 for use so as to charge the battery.
  • the first section 70 and the second section 72 include an outer cylindrical housing 22 extending in a longitudinal direction along the length of the electronic smoking article 60.
  • the outer tube 6 is formed of a metal and is part of the electrical circuit, (n other embodiments, the outer tube 6 can formed of any suitable material or combination of materials.
  • suitable materials include metals, alloys, plastics or composite materials containing one or more of those materials, or thermoplastics that are suitable for food or pharmaceutical applications, for example polypropylene,
  • PEEK polyetheretherketone
  • ceramic ceramic
  • polyethylene Preferably, the material is light and non-brittle.
  • first section 70 is disposable and the second section 72 is reusable. In another embodiment, both the first section 70 and the second section 72 are disposable.
  • the sections 70, 72 can be attached by a threaded connection.
  • each liquid supply reservoir 14a, 14b is a tubular, elongate body that holds a predetermined quantity of liquid material.
  • each liquid supply reservoir 14a, 14b is pressurized such that the liquid material therein is under constant pressure.
  • each liquid supply reservoir 14a, 14b can include a pressurization arrangement 50a, 50b, such as an internal or external spring and plate arrangement which constantly applies pressure to each liquid supply reservoir 14a, 14b.
  • each liquid supply reservoir 14a, 14b can be compressible and positioned between two plates that are connected by springs.
  • each liquid supply reservoir 14a, 14b could be compressible and positioned between the outer housing and a plate and the plate and outer housing could be connected by a spring so that the plate applies pressure to each liquid supply reservoir 14a, 14b.
  • each liquid supply reservoir 14a, 14b has an outlet 16a, 16b which is in fluid communication with a capillary tube 18a, 18b.
  • a valve 40a, 40b connects each outlet 16a, 16b to (he respective capillary tube 18a, 18b so as to prevent flow of liquid material when the electronic smoking article 60 is not in use,
  • each valve 40a, 40b is opened, each liquid supply reservoir 14a, 14b can deliver a volume of liquid material to one of the capillary tubes 1 a, 18b.
  • the power supply 12 is activated and each capillary tube 18a, 1 8b is heated to form a heated section wherein the liquid material is volatilized.
  • each liquid supply reservoir 14a, 14b extends longitudinally within the outer cylindrical housing 22 of the first section 70.
  • each liquid supply reservoir 14a, 14b can comprise a different liquid material which is volatilized when heated and forms an aerosol.
  • Each aerosol can have the same or different particle size distributions.
  • the liquid supply reservoir 14a can include flavor material
  • the liquid supply reservoir 14b can include a tobacco derived ingredient, such as nicotine.
  • each capillary tube 18a, 1 8b includes an inlet end 62a, 62b in fluid communication with the outlet 16a, 16b of the liquid supply reservoir 14a, 14b, and an outlet end 63a, 63b operable to expel volatilized liquid material from each capillary tube 18a, 18b.
  • one or both capillary tube 18a, 18b can include a constriction 101a (shown in Figure 3) at an outlet end 63a, 63b of the capillary tube 18a, 18 b.
  • each capillary tube 18a, 18b has a different internal diameter so as to aid in promoting formation of an aerosol having a particular particle size distribution.
  • each of the capillary tubes 1 8a, 18b can have an internal diameter of 0.01 to 10 mm, preferably 0.05 to 1 mm, and more preferably 0.05 to 0.4 mm.
  • the capillary tube 18a can have an internal diameter of about 0.05 mm and the capillary tube 18b can have an internal diameter of about 0.4 mm.
  • Capillary tubes of smaller diameter provide more efficient heat transfer to the fluid because, with the shorter the distance to the center of the fluid, less energy and time is required to vaporize the liquid.
  • each capillary tube 18a, 18b may have a length of about 5 mm to about 72 mm, more preferably about 10 mm to about 60 mm or about 20 mm to about 50 mm.
  • each capillary tube 18a, 18b can be about 50 mm in length and arranged such that a downstream, about 40 mm long portion of the capillary tube 18a, 18b forms a coiled heated section and an upstream, about 10 mm long portion of the capillary tube 18a, 18b remains relatively unheated when the heater 19a, 19b is activated.
  • each capillary tube 18a, 18b is substantially straight. In other embodiments, one or both capillary tubes 18a, 18b are coiled and/or include one or more bends therein to conserve space.
  • each capillary tube 18a, 18b is formed of a conductive material, and thus acts as its own heater 19a, 19b by passing current through the tube.
  • the capillary tubes 18a, 18b may be any electrically conductive material capable of being resistively heated, while retaining the necessary structural integrity at the operating temperatures experienced by the capillary tubes 18a, 18b, and which is non-reactive with the liquid material.
  • Suitable materials for forming the capillary tubes 18a, 18b are selected from the group consisting of stainless steel, copper, copper alloys, porous ceramic materials coated with film resistive material, Inconel ® available from Special Metals Corporation, which is a nickel-chromium alloy, nichrome, which is also a nickel-chromium alloy, and combinations thereof.
  • each capillary tube 18a, 18b is a stainless steel capillary tube 18a, 18b, a portion of which serves as a heater 19a, 19b.
  • the heater 19a, 19b is established between electrical leads 26a, 26b and an electrical connection 110 adjacent the outlet ends 63a, 63b of the capillary tubes 18a, 18b.
  • a direct or alternating current passes along a length of the capillary tube 18a, 18b to form the heater 19a, 19b.
  • the first and second capillary tubes can be electrically connected in series such that the first and second capillary tubes 18a, 18b are heated by passing electrical cun-ent from the power source along the first capillary tube, through the electrical connection interconnecting the first and second capillary tubes, and along the second capillary tube, such that the electrical current is effective to heat the capillary tubes to a temperature sufficient to volatilize liquid material contained therein as in U.S. Patent No. 6,715,487 which is incorporated herein in its entirety by reference thereto.
  • the capillary tubes 18a, 18b can be connected in parallel.
  • the stainless steel capillary tube 18a, 18b is heated by resistance heating.
  • the stainless steel capillary tube 18a, 18b is preferably circular in cross section.
  • the capillary tube 18a, 18b may be of tubing suitable for use as a hypodermic needle of various gauges.
  • the capillary tube 18a, 1 8b may comprise a 32 gauge needle has an internal diameter of 0.1 1 mm and a 26 gauge needle has an internal diameter of 0.26 mm.
  • the capillary tube 18a, 18b may be a non-metallic tube such as, for example, a glass tube.
  • the heater 19a, 19b is formed of a conductive material capable of being resistively heated, such as, for example, stainless steel, nichrome or platinum wire, arranged along the glass tube.
  • a conductive material capable of being resistively heated such as, for example, stainless steel, nichrome or platinum wire, arranged along the glass tube.
  • liquid material in the capillary tube 18a, 18b is heated to a temperature sufficient to at least partially volatilize liquid material in the capillary tube 18a, 18b.
  • one capillary tube 18a can be stainless steel and one capillary tube 18b can be a glass tube.
  • electrical leads 26a, 26b and the electrical connection 110 are bonded to the metallic capillary tubes 18a, 18b.
  • the electrical leads 26a, 26b are brazed to the capillary tubes 18a, 18b.
  • one electrical lead 26a is brazed to a first, upstream portion of the first capillary tube 18a and a second electrical lead 26b is brazed to an upstream portion of the second capillary tube 18b as shown in Figure 2.
  • each capillary tube 18a, 18b is heated, the liquid material contained within a heated portion of each capillary tube 18a, 18b is volatilized and ejected out of the outlet 63a, 63b where it expands and mixes with air from one or more air inlets 44 and forms an aerosol in a mixing chamber 46.
  • the electronic smoking article 60 includes at least one air inlet 44 operable to deliver air to the mixing chamber 46.
  • the air inlets 44 to the mixing chamber 46 arc arranged downstream of the capillary tubes 18a, 18b so as to minimize drawing air along the capillary tube and thereby avoid cooling of the capillary tubes 18a, 18b during heating cycles.
  • the volatilized material expands out of each capillary tubes 18a, 18b and into the mixing chamber 46 where it can mix with air to form an aerosol which is then drawn through the mouth-end insert 20.
  • the at least one air inlet 44 includes one or two air inlets. Alternatively, there may be three, four, five or more air inlets 44. Altering the size and number of air inlets 44 can also aid in establishing the resistance to draw of the electronic smoking article 60.
  • each liquid supply reservoir 14a, 14b may include an electrically operated or a mechanically operated valve 40a, 40b, shown in Figure 2.
  • Each valve 40a, 40b is operable to maintain the liquid material within the liquid supply, but opens when the electronic smoking article 60 is activated.
  • the electronic smoking article is manually activated by pressing a button (pressure switch) 100 (shown in Figure 1), which opens the valves 40a, 40b and simultaneously activates the heaters 19a, 19b.
  • valves 40a, 40b and the heaters 19a, 19b can be puff activated, such that when a smoker draws upon the electronic smoking article 60, the puff sensor 16 communicates with the control circuitry 11 to activate the heaters 19a, 19b and open the valves 40a, 40b.
  • the valve 40a, 40b opens when a critical, minimum pressure is reached so as to avoid inadvertent dispensing of liquid material from the liquid supply reservoirs 14a, 14b or activating the heaters 19a, 19b.
  • the pressure required to press the button 100 is high enough such thai accidental heating is avoided. Such arrangement avoids activation of the heaters 19a, 19b in the absence of liquid being pumped through the capillary tube.
  • valves 40a, 40b also aids in limiting the amount of liquid that is drawn back from each capillary tube upon release of pressure upon the liquid supply reservoir 14 (and/or the switch 44). Withdrawal of liquid from the capillary tube at conclusion of a puff (or activation) is desirous. The presence of residual liquid in the capillary tube at the initiation of a new puff cycle can lead to undesirable sputtering of liquid from the heated capillary tube at the beginning of activation.
  • the valves 40a, 40b can be configured to allow a desired, limited amount of drawback to occur, such that drawback of liquid occurs without air being drawn into the liquid supply reservoirs 14a, 14b.
  • each capillary tube 18a, 18b is purged once a smoker has stopped drawing on the electronic smoking article 60 or has stopped pushing the button 100 because any liquid remaining in the tube is expelled (volatilized) during heating.
  • the power supply 12 includes a battery arranged in the electronic smoking article 60.
  • the heaters 19a, 19b can be connected to the battery by the electrical leads 26a, 26b.
  • the power supply 12 is operable to apply voltage across the heaters 19a, 19b associated with the capillary tubes 18a, 18b and volatilize liquid material contained therein according to a power cycle of either a predetermined time period, such as a 2 to 10 second period, or for so long as pressure is applied to the button (pressure switch) 100.
  • the control circuitry 11 can be programmable and can include a microprocessor programmed to carry out functions such as heating the capillary tubes and/or operating the valves. In other embodiments, the control circuitry 11 can include an application specific integrated circuit (ASIC).
  • ASIC application specific integrated circuit
  • the electrical contacts or connection between the heaters 19a, 19b and the electrical leads 26a, 26b are highly conductive and temperature resistant while the heatable portions 19a, 19b of the capillary tubes 18a, 18b are highly resistive so that heat generation occurs primarily along the heaters 19a, 19b and not at the contacts.
  • the battery can be a Lithium -ion battery or one of its variants, for example a Lithium-ion polymer battery.
  • the battery may be a Nickel-metal hydride battery, a Nickel cadmium battery, a Lithium-manganese battery, a Lithium-cobalt battery or a fuel cell.
  • the electronic smoking article 60 is usable by a smoker until the energy in the power supply is depleted.
  • the power supply 12 may be rechargeable and include circuitry allowing the battery to be chargeable by an external charging device. Tn that case, preferably the circuitry, when charged, provides power for a pre-determined number of puffs, after which the circuitry must be re-connected to an extei nal charging device.
  • the electronic smoking article 60 also includes control circuitry which can be on a printed circuit board 1 1.
  • control circuitry which can be on a printed circuit board 1 1.
  • the control circuitry ! 1 can also include a heater activation light 27 operable to glow when the heaters 19a, 19b are activated.
  • the heater activation light 27 comprises at least one LED and is at an upstream end 5 (shown in Figure 1) of the electronic smoking article 60 so that the heater activation light 27 takes on the appearance of a burning coal during a puff.
  • the heater activation light 27 can be arranged to be visible to the smoker.
  • the heater activation light 27 can be utilized for smoking article system diagnostics.
  • the light 27 can also be configured such that the smoker can activate and/or deactivate the light 27 when desired, such that the light 27 would not activate during smoking if desired.
  • the heaters 19a, 19b heat a portion of the capillary tubes 18a, 18b for less than about 10 seconds, more preferably less than about 7 seconds.
  • the power cycle (or maximum puff length) can range in period from about 2 seconds to about 10 seconds (e.g., about 3 seconds to about 9 seconds, about 4 seconds to about 8 seconds or about 5 seconds to about 7 seconds).
  • the liquid supply reservoirs 14a, 14b each include a liquid material which has a boiling point suitable for use in the electronic smoking article 60, If the boiling point is too high, the heaters 19a, 19b will not be able to vaporize liquid in the capillary tubes 18a, 18b. However, if the boiling point is too low, the liquid may vaporize without the heaters 19a, 19b being activated.
  • the liquid supply reservoirs 14a, 14b each contain a different liquid material having different viscosities.
  • the first liquid supply reservoir 14a can include at least one flavor material.
  • the second liquid supply reservoir 14b can include at least one tobacco derived ingredient, such as nicotine.
  • the liquid material in the second liquid supply reservoir 14b is more viscous at room temperature than the liquid material in the first liquid supply reservoir 14a.
  • the capillary tube 18b associated with the second liquid supply reservoir 14b, preferably has a larger internal diameter than the capillary tube 18a associated with the first liquid supply reservoir 14a, Accordingly, the first capillary tube 18a produces aerosol having particles ranging in size from about 0.4 micron to about 2 microns depending on the flavor material included in the liquid supply reservoir 14a and the viscosity thereof.
  • the second capillary tube 18b produces an aerosol having particles ranging in size from about 0.5 micron to about 1 micron.
  • the electronic smoking article can be configured to form a first aerosol having larger particles for delivery to the mouth and a second aerosol having smaller particles for delivery to the lower respiratory tract if desired.
  • the second liquid supply reservoir 14b can include nicotine.
  • the first liquid supply reservoir 14a can include flavor material, a non-tobacco material and/or may be nicotine-free.
  • the liquid material in the first liquid supply reservoir 14a may include water, solvents, cthanol, plant extracts and natural or artificial flavors.
  • the liquid in each of the first liquid supply reservoir 14a and the second liquid supply reservoir 14b can include an aerosol former. Examples of suitable aerosol formers are glycerine and propylene glycol.
  • the electronic smoking article 60 further includes a mouth-end insert 20 having at least two off-axis, preferably diverging outlets 21.
  • the mouth-end insert 20 is in fluid communication with the mixing chamber 46 and includes at least two diverging outlets 21. (e.g, 3, 4, 5, or preferably 6 to 10 outlets or more).
  • the outlets 21 of die mouth-end insert 20 are located at ends of off-axis passages 23 and are angled outwardly in relation to the longitudinal direction of the electronic smoking article 60 (i.e., divergently).
  • the term "off-axis" denotes at an angle to the longitudinal direction of the electronic smoking article 60.
  • the mouth-end insert (or flow guide) 20 includes four outlets uniformly distributed around the mouth-end insert 20 so as to substantially uniformly distribute aerosol in a smoker's mouth during use.
  • the aerosol As the aerosol passes into a smoker's mouth, the aerosol enters the mouth and moves in different directions so as to provide a full mouth feel as compared to electronic smoking articles having an on-axis single orifice which directs the aerosol to a single location in a smoker's mouth.
  • outlets 21 and off-axis passages 23 are arranged such that droplets of unaerosoli ed liquid material carried in the aerosol impact interior surfaces 25 of the mouth-end insert 20 and/or interior surfaces of the off-axis passages 23 such that the droplets are removed or broken apart.
  • the outlets 21 of the mouth-end insert 20 are located at the ends of the off-axis passages 23 and are angled at 5 to 60° with respect to the central longitudinal axis of the electronic smoking article 60 so as to more completely distribute aerosol throughout a mouth of a smoker during use and to remove droplets.
  • each outlet 21 has a diameter of about 0.01 5 inch to about 0.090 inch (e.g., about 0.020 inch to about 0.040 inch or about 0.028 inch to about 0.038 inch).
  • the size of the outlets 21 and off-axis passages 23 along with the number of outlets 21 can be selected to adjust the resistance to draw (RTD) of the electronic smoking article 60, if desired.
  • the mouth-end insert 20 is affixed within the outer cylindrical housing 22 of the cartridge 70.
  • the electronic smoking article 60 is about the same size as a conventional cigarette.
  • the electronic smoking article 60 can be about 80 mm to about 1 10 mm long, preferably about 80 mm to about 100 mm long and about 7 mm to about 8 mm in diameter.
  • the electronic smoking article is about 84 mm long and has a diameter of about 7.8 mm.
  • the outer cylindrical housing 22 of the electronic smoking article 60 may be formed of any suitable material or combination of materials.
  • the outer cylindrical housing 22 is formed of metal.
  • suitable materia ls include metals, alloys, plastics or composite materials containing one or more of those materials, or thermoplastics that are suitable for food or pharmaceutical applications, for example polypropylene,
  • the outer cylindrical housing 22 can be any suitable color and/or can include graphics or other indicia printed thereon.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
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  • General Health & Medical Sciences (AREA)
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  • Pharmacology & Pharmacy (AREA)
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Abstract

La présente invention se rapporte à un article à fumer électronique qui comprend un premier générateur d'aérosol capillaire et un second générateur d'aérosol capillaire. Le premier générateur d'aérosol capillaire produit un aérosol qui présente une première distribution granulométrique, et le second générateur d'aérosol capillaire produit un aérosol qui présente une seconde distribution granulométrique.
EP14712546.2A 2013-03-15 2014-03-10 Article à fumer électronique Withdrawn EP2967141A1 (fr)

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PCT/US2014/022330 WO2014150131A1 (fr) 2013-03-15 2014-03-10 Article à fumer électronique

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KR20160008510A (ko) 2016-01-22
CA2904856A1 (fr) 2014-09-25
MA38386A1 (fr) 2016-02-29
CN105324045A (zh) 2016-02-10
WO2014150131A1 (fr) 2014-09-25
AR095999A1 (es) 2015-11-25
US20140261488A1 (en) 2014-09-18
RU2015144179A (ru) 2017-04-25

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