US20140261488A1 - Electronic smoking article - Google Patents
Electronic smoking article Download PDFInfo
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- US20140261488A1 US20140261488A1 US14/199,365 US201414199365A US2014261488A1 US 20140261488 A1 US20140261488 A1 US 20140261488A1 US 201414199365 A US201414199365 A US 201414199365A US 2014261488 A1 US2014261488 A1 US 2014261488A1
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- Prior art keywords
- smoking article
- electronic smoking
- capillary tube
- capillary
- heater
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- 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
-
- A24F47/008—
-
- 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
Abstract
An electronic smoking article includes a first capillary aerosol generator and a second capillary aerosol generator. The first capillary aerosol generator produces an aerosol having a first particle size distribution and the second capillary aerosol generator produces an aerosol having a second particle size distribution.
Description
- This application claims priority under 35 U.S.C. §119(e) to U.S. provisional Application No. 61/798,010, filed on Mar. 15, 2013, the entire content of which is incorporated herein by reference thereto.
- Many of the embodiments disclosed herein include electronic smoking articles which include heated capillary aerosol generators. The heated capillary volatilizes a liquid such as by way of the teachings set forth in U.S. Pat. No. 5,743,251, which is incorporated herein in its entirety by reference thereto.
- 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 with 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 tube can occur within a puff cycle at different times within the puff cycle. Moreover, 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.
-
FIG. 1 is a side view of an electronic smoking article. -
FIG. 2 is a cross-sectional view of the electronic smoking article ofFIG. 1 . -
FIG. 3 is an illustration of a capillary tube having a constriction adjacent an outlet of the capillary tube. -
FIG. 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 the second liquid material can include nicotine. The first liquid supply reservoir and the second liquid supply reservoir can contain liquids having different viscosities.
- Advantageously, by providing an aerosol with two different particle size distributions, the aerosol can be tailored to provide desired flavor and/or therapeutic compositions. For example, 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.
- As shown in
FIG. 1 , anelectronic smoking article 60 comprises a replaceable cartridge (or first section) 70 and a reusable fixture (or second section) 72, which are coupled together at a threadedjoint 74 or by other convenience such as a snug-fit, snap-fit, detent, clamp and/or clasp. - The
first section 70 can house a mouth-end insert 20, twocapillary tubes heaters capillary tube heatable portion capillary tube liquid supply reservoirs second section 72 can house apower supply 12,control circuitry 11 and apuff sensor 16. A threaded portion of thesection 72 can be connected to a battery charger when not connected to thefirst section 70 for use so as to charge the battery. - Preferably, the
first section 70 and thesecond section 72 include an outercylindrical housing 22 extending in a longitudinal direction along the length of theelectronic smoking article 60. Preferably, the outer tube 6 is formed of a metal and is part of the electrical circuit. In other embodiments, the outer tube 6 can formed of any suitable material or combination of materials. Examples of 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, polyetheretherketone (PEEK), ceramic, and polyethylene. Preferably, the material is light and non-brittle. - In one embodiment, the
first section 70 is disposable and thesecond section 72 is reusable. In another embodiment, both thefirst section 70 and thesecond section 72 are disposable. Thesections - In the preferred embodiment, each
liquid supply reservoir liquid supply reservoir FIG. 2 , eachliquid supply reservoir pressurization arrangement liquid supply reservoir liquid supply reservoir liquid supply reservoir liquid supply reservoir - Preferably, each
liquid supply reservoir outlet capillary tube valve outlet capillary tube electronic smoking article 60 is not in use. When eachvalve liquid supply reservoir capillary tubes capillary tubes power supply 12 is activated and eachcapillary tube capillary tubes electronic smoking article 60 viaair inlets 44, and form two aerosols which are combined in amixing chamber 46. - Preferably, each
liquid supply reservoir cylindrical housing 22 of thefirst section 70. Moreover, eachliquid supply reservoir liquid supply reservoir 14 a can include flavor material, while theliquid supply reservoir 14 b can include a tobacco derived ingredient, such as nicotine. - In the preferred embodiment, each
capillary tube inlet end outlet liquid supply reservoir outlet end capillary tube capillary tube constriction 101 a (shown inFIG. 3 ) at anoutlet end capillary tube - Preferably, each
capillary tube capillary tubes capillary tube 18 a can have an internal diameter of about 0.05 mm and thecapillary tube 18 b 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. - Also preferably, each
capillary tube capillary tube capillary tube capillary tube heater - In one embodiment, each
capillary tube capillary tubes - In the preferred embodiment, each
capillary tube own heater capillary tubes capillary tubes capillary tubes - In one embodiment, each
capillary tube steel capillary tube heater heater electrical leads electrical connection 110 adjacent the outlet ends 63 a, 63 b of thecapillary tubes capillary tube heater capillary tubes capillary tubes - Thus, the stainless
steel capillary tube steel capillary tube capillary tube capillary tube - In another embodiment, the
capillary tube heater capillary tube capillary tube capillary tube 18 a can be stainless steel and onecapillary tube 18 b can be a glass tube. - Preferably, as shown in
FIG. 2 , that electrical leads 26 a, 26 b and theelectrical connection 110 are bonded to the metalliccapillary tubes capillary tubes electrical lead 26 a is brazed to a first, upstream portion of the firstcapillary tube 18 a and a secondelectrical lead 26 b is brazed to an upstream portion of the secondcapillary tube 18 b as shown inFIG. 2 . - In use, once each
capillary tube capillary tube outlet more air inlets 44 and forms an aerosol in a mixingchamber 46. - Preferably, the
electronic smoking article 60 includes at least oneair inlet 44 operable to deliver air to the mixingchamber 46. Preferably, theair inlets 44 to the mixingchamber 46 are arranged downstream of thecapillary tubes capillary tubes capillary tubes chamber 46 where it can mix with air to form an aerosol which is then drawn through the mouth-end insert 20. In the preferred embodiment, the at least oneair inlet 44 includes one or two air inlets. Alternatively, there may be three, four, five ormore air inlets 44. Altering the size and number ofair inlets 44 can also aid in establishing the resistance to draw of theelectronic smoking article 60. - In the preferred embodiment, each
liquid supply reservoir valve FIG. 2 . Eachvalve electronic smoking article 60 is activated. Preferably, the electronic smoking article is manually activated by pressing a button (pressure switch) 100 (shown inFIG. 1 ), which opens thevalves heaters valves heaters electronic smoking article 60, thepuff sensor 16 communicates with thecontrol circuitry 11 to activate theheaters valves - Preferably, if the
button 100 is used to manually activate theelectronic smoking article 60, thevalve liquid supply reservoirs heaters button 100 is high enough such that accidental heating is avoided. Such arrangement avoids activation of theheaters - Advantageously, the use of
valves valves liquid supply reservoirs - Advantageously, each
capillary tube electronic smoking article 60 or has stopped pushing thebutton 100 because any liquid remaining in the tube is expelled (volatilized) during heating. - In the preferred embodiment, the
power supply 12 includes a battery arranged in theelectronic smoking article 60. Theheaters power supply 12 is operable to apply voltage across theheaters capillary tubes 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, thecontrol circuitry 11 can include an application specific integrated circuit (ASIC). - Preferably, the electrical contacts or connection between the
heaters heatable portions capillary tubes heaters - The battery can be a Lithium-ion battery or one of its variants, for example a Lithium-ion polymer battery. Alternatively, 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. In that case, preferably, the
electronic smoking article 60 is usable by a smoker until the energy in the power supply is depleted. Alternatively, thepower supply 12 may be rechargeable and include circuitry allowing the battery to be chargeable by an external charging device. In 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 external charging device. - Preferably, the
electronic smoking article 60 also includes control circuitry which can be on a printedcircuit board 11. Once the button 100 (pressure switch) is pressed, thepower supply 12 is activated and supplies power to theheaters control circuitry 11 can also include aheater activation light 27 operable to glow when theheaters heater activation light 27 comprises at least one LED and is at an upstream end 5 (shown inFIG. 1 ) of theelectronic smoking article 60 so that theheater activation light 27 takes on the appearance of a burning coal during a puff. Moreover, theheater activation light 27 can be arranged to be visible to the smoker. In addition, theheater 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. - Preferably, when activated, the
heaters capillary tubes - In the preferred embodiment, the
liquid supply reservoirs electronic smoking article 60. If the boiling point is too high, theheaters capillary tubes heaters - Preferably, the
liquid supply reservoirs liquid supply reservoir 14 a can include at least one flavor material. The secondliquid supply reservoir 14 b can include at least one tobacco derived ingredient, such as nicotine. Preferably, the liquid material in the secondliquid supply reservoir 14 b is more viscous at room temperature than the liquid material in the firstliquid supply reservoir 14 a. Moreover, thecapillary tube 18 b, associated with the secondliquid supply reservoir 14 b, preferably has a larger internal diameter than thecapillary tube 18 a associated with the firstliquid supply reservoir 14 a. Accordingly, the firstcapillary tube 18 a produces aerosol having particles ranging in size from about 0.4 micron to about 2 microns depending on the flavor material included in theliquid supply reservoir 14 a and the viscosity thereof. The secondcapillary tube 18 b produces an aerosol having particles ranging in size from about 0.5 micron to about 1 micron. Advantageously, 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 14 b can include nicotine. The firstliquid supply reservoir 14 a can include flavor material, a non-tobacco material and/or may be nicotine-free. For example, the liquid material in the firstliquid supply reservoir 14 a may include water, solvents, ethanol, plant extracts and natural or artificial flavors. Preferably, the liquid in each of the firstliquid supply reservoir 14 a and the secondliquid supply reservoir 14 b can include an aerosol former. Examples of suitable aerosol formers are glycerine and propylene glycol. - As shown in
FIG. 2 theelectronic smoking article 60 further includes a mouth-end insert 20 having at least two off-axis, preferably divergingoutlets 21. Preferably, the mouth-end insert 20 is in fluid communication with the mixingchamber 46 and includes at least two divergingoutlets 21. (e.g, 3, 4, 5, or preferably 6 to 10 outlets or more). Preferably, theoutlets 21 of the 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). As used herein, the term “off-axis” denotes at an angle to the longitudinal direction of theelectronic smoking article 60. Also preferably, 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. Thus, 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. - In addition, the
outlets 21 and off-axis passages 23 are arranged such that droplets of unaerosolized liquid material carried in the aerosol impactinterior 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. In the preferred embodiment, theoutlets 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 theelectronic smoking article 60 so as to more completely distribute aerosol throughout a mouth of a smoker during use and to remove droplets. - Preferably, each
outlet 21 has a diameter of about 0.015 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 theoutlets 21 and off-axis passages 23 along with the number ofoutlets 21 can be selected to adjust the resistance to draw (RTD) of theelectronic smoking article 60, if desired. - Preferably, the mouth-
end insert 20 is affixed within the outercylindrical housing 22 of thecartridge 70. - In a preferred embodiment, the
electronic smoking article 60 is about the same size as a conventional cigarette. In some embodiments, theelectronic smoking article 60 can be about 80 mm to about 110 mm long, preferably about 80 mm to about 100 mm long and about 7 mm to about 8 mm in diameter. For example, in an embodiment, the electronic smoking article is about 84 mm long and has a diameter of about 7.8 mm. - The outer
cylindrical housing 22 of theelectronic smoking article 60 may be formed of any suitable material or combination of materials. Preferably, the outercylindrical housing 22 is formed of metal. Examples of 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, polyetheretherketone (PEEK), ceramic, low density polyethylene (LDPE) and high density polyethylene (HDPE). Preferably, the material is light and non-brittle. The outercylindrical housing 22 can be any suitable color and/or can include graphics or other indicia printed thereon. - When the word “about” is used in this specification in connection with a numerical value, it is intended that the associated numerical value include a tolerance of ±10% around the stated numerical value. Moreover, when reference is made to percentages in this specification, it is intended that those percentages are based on weight, i.e., weight percentages.
- Moreover, when the words “generally” and “substantially” are used in connection with geometric shapes, it is intended that precision of the geometric shape is not required but that latitude for the shape is within the scope of the disclosure. When used with geometric terms, the words “generally” and “substantially” are intended to encompass not only features which meet the strict definitions but also features which fairly approximate the strict definitions.
- It will now be apparent that a new, improved, and nonobvious electronic smoking article has been described in this specification with sufficient particularity as to be understood by one of ordinary skill in the art. Moreover, it will be apparent to those skilled in the art that numerous modifications, variations, substitutions, and equivalents exist for features of the electronic smoking article which do not materially depart from the spirit and scope of the invention. Accordingly, it is expressly intended that all such modifications, variations, substitutions, and equivalents which fall within the spirit and scope of the invention as defined by the appended claims shall be embraced by the appended claims.
Claims (25)
1. 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,
wherein the first aerosol has a first particle size distribution and the second aerosol has a second particle size distribution.
2. The electronic smoking article of claim 1 , wherein the first capillary aerosol generator comprises:
a first capillary tube having a first capillary inlet and a first capillary outlet, the first capillary inlet in communication with the first liquid material; and
a first heater operable to heat the first capillary tube to a temperature sufficient to volatilize the first liquid material contained within the first capillary tube.
3. The electronic smoking article of claim 2 , wherein the second capillary aerosol generator comprises:
a second capillary tube having a second capillary inlet and a second capillary outlet, the second capillary inlet in communication with the second liquid material; and
a second heater operable to heat the second capillary tube to a temperature sufficient to volatilize the second liquid material contained within the second capillary tube.
4. The electronic smoking article of claim 3 , wherein the first liquid material and the second liquid material have different room temperature viscosities.
5. The electronic smoking article of claim 3 , wherein the first liquid material comprises flavor material and the second liquid material comprises nicotine.
6. The electronic smoking article of claim 3 , wherein an internal diameter of the first capillary tube is smaller than an internal diameter of the second capillary tube.
7. The electronic smoking article of claim 3 , further comprising:
a power supply operable to apply voltage across the first heater and the second heater;
a mixing chamber downstream of the first capillary tube and the second capillary tube; and
at least one air inlet operable to deliver air into the mixing chamber during drawing on the electronic smoking article.
8. The electronic smoking article of claim 6 , wherein each of the first capillary tube and the second capillary tube has an internal diameter of about 0.05 to 0.4 mm and a length of about 5 mm to about 72 mm or about 10 mm to 60 mm.
9. The electronic smoking article of claim 6 , wherein each of the first capillary tube and the second capillary tube comprise a stainless steel tube or a non-metallic tube.
10. The electronic smoking article of claim 7 , wherein the power supply includes a battery.
11. The electronic smoking article of claim 10 , wherein the first heater is connected to the battery by two spaced apart electrical leads and wherein the second heater is connected to the battery by two spaced apart electrical leads.
12. The electronic smoking article of claim 10 , wherein the first heater and the second heater are connected in series.
13. The electronic smoking article of claim 7 , further including control circuitry operable to control supply of power from the power supply to the first heater and the second heater.
14. The electronic smoking article of claim 13 , wherein the control circuitry further includes a heater activation light at an upstream end of the electronic smoking article, the heater activation light operable to light up when the first heater and the second heater are activated.
15. The electronic smoking article of claim 3 , further including a first valve between a first pressurized liquid supply and the first capillary inlet.
16. The electronic smoking article of claim 15 , further including a second valve between a second outlet of a second pressurized liquid supply and the second capillary inlet.
17. The electronic smoking article of claim 16 , wherein the first valve and the second valve are electrically operated valves and the electronic smoking article further includes a pressure switch, the pressure switch operable to send a signal to open the first valve and the second valve and to send a signal to the control circuitry to supply power to the first heater and the second heater.
18. The electronic smoking article of claim 3 , further including a puff sensor operable to sense a draw on the electronic smoking article.
19. The electronic smoking article of claim 7 , wherein the electronic smoking article includes a first section and a second section and wherein the first section contains the first capillary aerosol generator and the second capillary aerosol generator and the second section contains the power supply and control circuitry operable to control heating of the first and second heaters.
20. The electronic smoking article of claim 19 , wherein the first section is replaceable and the second section is reusable.
21. A method of forming an aerosol containing two particle size distributions comprising:
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 with air to produce a second aerosol; and
combining the first and second aerosols in a mixing chamber.
22. The method of claim 21 , wherein the first aerosol comprises particles ranging in size from about 0.4 micron to about 2 microns.
23. The method of claim 21 , wherein the second aerosol comprises particles ranging in size from about 0.5 micron to about 1 micron.
24. The method of claim 21 , wherein the heating of the first capillary tube and the heating of the second capillary tube occur within a puff cycle at different times within the puff cycle.
25. The method of claim 21 , wherein 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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/199,365 US20140261488A1 (en) | 2013-03-15 | 2014-03-06 | Electronic smoking article |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201361798010P | 2013-03-15 | 2013-03-15 | |
US14/199,365 US20140261488A1 (en) | 2013-03-15 | 2014-03-06 | Electronic smoking article |
Publications (1)
Publication Number | Publication Date |
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US20140261488A1 true US20140261488A1 (en) | 2014-09-18 |
Family
ID=50349991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/199,365 Abandoned US20140261488A1 (en) | 2013-03-15 | 2014-03-06 | Electronic smoking article |
Country Status (9)
Country | Link |
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US (1) | US20140261488A1 (en) |
EP (1) | EP2967141A1 (en) |
KR (1) | KR20160008510A (en) |
CN (1) | CN105324045A (en) |
AR (1) | AR095999A1 (en) |
CA (1) | CA2904856A1 (en) |
MA (1) | MA38386A1 (en) |
RU (1) | RU2015144179A (en) |
WO (1) | WO2014150131A1 (en) |
Cited By (119)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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WO2014150131A1 (en) | 2014-09-25 |
RU2015144179A (en) | 2017-04-25 |
AR095999A1 (en) | 2015-11-25 |
CA2904856A1 (en) | 2014-09-25 |
KR20160008510A (en) | 2016-01-22 |
EP2967141A1 (en) | 2016-01-20 |
CN105324045A (en) | 2016-02-10 |
MA38386A1 (en) | 2016-02-29 |
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