EP1128743A1 - System zur bereitstellung eines inhalierbaren aerosols - Google Patents

System zur bereitstellung eines inhalierbaren aerosols

Info

Publication number
EP1128743A1
EP1128743A1 EP99972075A EP99972075A EP1128743A1 EP 1128743 A1 EP1128743 A1 EP 1128743A1 EP 99972075 A EP99972075 A EP 99972075A EP 99972075 A EP99972075 A EP 99972075A EP 1128743 A1 EP1128743 A1 EP 1128743A1
Authority
EP
European Patent Office
Prior art keywords
housing
inhalation device
heating
substrate portion
aerosol
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Withdrawn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
EP99972075A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wolfgang Wildenau
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.)
Reemtsma Cigarettenfabriken GmbH
Original Assignee
HF and PhF Reemtsma GmbH and Co
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 HF and PhF Reemtsma GmbH and Co filed Critical HF and PhF Reemtsma GmbH and Co
Publication of EP1128743A1 publication Critical patent/EP1128743A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F42/00—Simulated smoking devices other than electrically operated; Component parts thereof; Manufacture or testing thereof
    • A24F42/10—Devices with chemical heating means
    • 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
    • A24F42/00—Simulated smoking devices other than electrically operated; Component parts thereof; Manufacture or testing thereof
    • A24F42/60—Constructional details

Definitions

  • the invention relates to a system for providing an inhalable aerosol and components of such a system.
  • This system is particularly suitable as a smoking article for providing smoke aerosol for smokers.
  • US Patents 5,060,666, 5,067,499 and 5,099,861 describe cigarette-like smoking articles in which the heat Energy of a smoldering carbon element is transferred to aerosol-forming material that contains flavors and an aerosol-forming agent such as glycerin in addition to tobacco or tobacco extracts.
  • aerosol-forming material that contains flavors and an aerosol-forming agent such as glycerin in addition to tobacco or tobacco extracts.
  • the combustion gases of the heating element are inhaled with the smoke aerosol, which leads to an increased absorption of carbon monoxide by the smoker.
  • the entire smoking article must be disposed of after smoking, which results in an increased accumulation of residues of complex composition and associated disposal problems.
  • WO 97/48294 shows a further system for providing an inhalable aerosol.
  • a burner and a heating medium tank which contains a heating medium for operating the burner, are located in a housing to be held in the hand.
  • the rising, hot combustion gases flow through a heat exchanger in which ventilation ducts are arranged.
  • the ventilation ducts are connected to the outside air at one end and open at the other end into a tubular flow duct which extends from the upper region of the housing and which is connected to the latter free end is designed as a mouthpiece.
  • the middle section of the flow channel is occupied by a portion of substrate which is indirectly heated by the air drawn in by the user and heated by the heat exchanger in order to release aerosol.
  • This system is also relatively heavy and unwieldy and must be opened in order to use a new portion of substrate.
  • the system according to the invention for providing an inhalable aerosol has an inhalation device which has a rod-like housing with a rear area on the mouth side and a front area.
  • a substrate holder which can be heated by a heating device and which is accessible via a loading opening which is preferably located on the front of the housing.
  • a flow channel leads from the substrate holder to the rear end of the housing.
  • the heating device is designed to generate heat by thermal or catalytic combustion, a heating medium tank preferably being arranged in the rear region of the housing.
  • the system also contains a substrate portion which is set up for insertion into the substrate holder through the loading opening and which is within a Enclosure, which has an air inlet opening and an aerosol outlet opening, contains aerosol-forming material.
  • the rod-like housing lies comfortably in the hand and gives the user the feeling of smoking a cigarette with a cigarette holder or a cigar.
  • the substrate portion is inserted into the heatable substrate holder in the front area of the rod-like housing, specifically via a loading opening, which is preferably located on the front of the housing. This reinforces the impression of using a cigar or cigarette with a cigarette holder.
  • the substrate portion is heated via the heatable substrate holder in order to release inhalable aerosol, which is led via the flow channel to the rear end of the housing.
  • the inhalation device can have a mouthpiece which is connected to the flow channel and is preferably poorly heat-conducting, so that the user does not experience uncomfortably high temperatures.
  • a filter designed as a filter mouthpiece in the rear region of the housing in the flow channel.
  • a filter can be inserted at another point in the flow channel; such a configuration can also be used in connection with a fixed mouthpiece.
  • the substrate holder of the inhalation device has at least one heating surface, which is preferably hollow cylindrical or channel-like.
  • the sub strathalterung can for example have two heating surfaces arranged parallel to each other, the mutual distance between which is preferably adjustable. It is conceivable for the distance to be set automatically as a function of the temperature, for example with the aid of a bimetal rail.
  • the substrate holder of the inhalation device has, within the heating surfaces, a well heat-conducting jacket, preferably provided with bores, which is designed to lie against a portion of the substrate inserted into the substrate holder.
  • the substrate holder of the inhalation device preferably has a rear cavity behind the heating surfaces, into which the rear area of a substrate portion inserted can be inserted.
  • This configuration allows the user to partially heat a portion of the substrate and inhale the released aerosol. He gradually pushes the substrate portion backwards, preferably after each pull, a little further, the used portion of the substrate portion being absorbed by the rear cavity until the entire substrate portion is used up (smoked).
  • a stop for the substrate portion can be provided at the rear end of the rear cavity.
  • the heating surfaces of the inhalation device are set up by catalytic
  • a preferably refillable heating medium tank can be arranged in the rear area of the housing of the inhalation device.
  • an exchangeable refill cartridge with heating medium is inserted into the housing.
  • the usual combustible substances are suitable as heating means, which can be liquid or gaseous at room temperature, as specified in the claims in detail.
  • the inhalation device can have a switching device which is connected to a preferably piezoelectrically operated ignition device set up to ignite the heating medium and to a valve device set up to release heating medium from the heating medium tank.
  • the switching device is designed purely mechanically and has an axially displaceable, preferably poorly heat-conducting ring on the front region of the housing of the inhalation device, which is preferably fixable in two positions.
  • the piezoelectrically effected ignition process can be triggered by moving the ring, the valve device simultaneously opening to release heating medium for the catalytic combustion; the ring is then turned to lock, the valve device remaining open and the heating process continuing.
  • the front region of the housing of the inhalation device preferably has air access openings for supplying combustion air to the heating device.
  • the combustion gases essentially carbon dioxide and water
  • the combustion gases emanating from the heating device are added to the inhalable aerosol, with the user being able to conduct air, combustion gas and aerosol cheaply.
  • the combustion gases contain such small amounts of harmful substances such as carbon monoxide that this is harmless.
  • the combustion gases are kept away from the inhalable aerosol.
  • the housing of the inhalation device has a component that lights up during operation of the heating device, e.g. a heating surface, a window. The user can then easily check the operating state of the inhalation device.
  • the housing of the inhalation device can be configured in one part or in several parts. In the latter case it is preferably in two parts and has a releasable connection, e.g. in the middle area between the front area of the housing in which the heatable substrate holder is arranged and the rear area of the housing in which the heating medium tank is located.
  • the housing can be opened at the detachable connection, e.g. for cleaning purposes.
  • the material for the inhaler housing should be heat resistant. Thermosets, multi-component plastics, hardwoods, precious woods, burl wood and / or metal come into question.
  • the substrate portion preferably has a cylindrical shape, the sheathing being arranged as a cylinder jacket and the end faces of the cylinder as an air inlet opening and as
  • Aerosol outlet are set up.
  • the Sheathing preferably low porous to impermeable to air to avoid sidestream smoke.
  • the substrate portion can have an insulating covering, which preferably protrudes beyond the front end of the covering, so that the user does not come into contact with hot surfaces when the substrate portion is pushed back into the housing of the inhalation device.
  • the aerosol-forming material of the substrate portion can have a largely inert carrier material or tobacco material and additional additives.
  • the material preferably contains a higher proportion of polyols which serve as aerosol formers.
  • the substrate portion is a thin, filterless cigarette which is commercially available per se and which has polyols in a proportion of 5% by weight to 10% by weight. Details of possible configurations of the substrate portion can be found in the claims.
  • FIG. 1 shows a schematic longitudinal section through an inventive system designed as a smoking article for providing an inhalable aerosol, in which a portion of the substrate is inserted into an inhalation device, and
  • Figure 2 shows a longitudinal section through a substrate portion.
  • FIG. 1 shows how a portion of substrate 1 is inserted into an inhalation device serving as a smoking device.
  • Figure 2 shows the substrate portion 1 in more detail.
  • aerosol-forming material 2 is located within a cylindrical envelope 3.
  • the envelope 3 leaves the end faces of the cylinder free, so that an air inlet opening 4 and an aerosol outlet opening 5 are formed there.
  • the aerosol-forming material 2 can have, for example, cut leaf tobacco, cut tobacco ribs, reconstituted tobacco or a carrier material treated with aroma substances.
  • Leaf and rib cuts can also be used in expanded form.
  • Both organic materials such as paper or cellulose fibers and inorganic materials such as silica gel can be used as carrier materials for flavorings. Any mixtures of the components mentioned can also be used. Numerous components and constituents for the aerosol-forming material are mentioned in the claims, so that numerous variants are conceivable.
  • the aerosol forming material 2 preferably contains a high proportion of one or more polyols, e.g. Glycerin and / or propylene glycol, e.g. when using largely inert carrier materials such as aluminum oxide, silica gel, activated carbon, cellulose fibers, lignin granules, zeolites, clays or meerschaum or combinations thereof in the range from 10% by weight to 60% by weight.
  • the preferred proportion of the polyols is 10% by weight to 40% by weight.
  • Another way of increasing aerosol formation is to use the aerosol-forming materials with a moisture which is significantly above the equilibrium moisture; for example Tobacco, whose equilibrium moisture content is approx. 10% to 12%, can be used with a moisture content of 20%. In this case, suitable packaging must be used to ensure that there is no loss of moisture until use.
  • the envelope 3 can consist of paper, plastic film or metal foil. A multi-layer covering made of the components mentioned can also be used. However, a single-layer wrapping made of paper or metal-coated paper is preferred. Low-porosity or almost air-impermeable cigarette paper, which preferably has a high proportion of mineral additives, is particularly advantageous. This ensures that when Heating and smoking the portion of substrate practically no sidestream smoke occurs.
  • the substrate portion 1 is in its front region, i.e. in the area of the air inlet opening 4, surrounded by an additional insulating sheath (not shown in FIGS. 1 and 2), which preferably projects beyond the front end of the sheath 3.
  • This insulating covering ensures that the user does not come into contact with uncomfortably hot surfaces when he pushes the substrate portion 1 deeper into the inhalation device when smoking (see below).
  • a paper film tobacco produced by known processes with a content of propylene glycol of 12% by weight was cut with a cutting width of 0.8 mm, fed to a cigarette rod making machine as in Example 1 and wrapped in a cigarette paper in the latter, the cigarette paper having an air permeability of 5 CU had.
  • the continuous strand (6 mm in diameter)
  • substrate portions with a respective length of 50 mm were obtained; the plug density was 240 mg / ml.
  • a substrate portion is also conceivable, which is provided behind the aerosol outlet opening 5 with a commercially available filter.
  • a filter it must be ensured that when inserting such a portion of substrate into the inhalation device it is not the filter but the aerosol-forming material 2 that is heated upstream of the filter.
  • FIG. 1 shows a schematic longitudinal section of an embodiment of an inhalation device 10.
  • the inhalation device 10 has a rod-like or cigar-shaped housing 12 with a front area 14 and a rear mouth area 16.
  • the rear end piece of the rear area 16 is designed as a mouthpiece 18, see Figure 1.
  • the housing 12 preferably consists of a heat-resistant material such as a thermoset, a multi-component plastic, a hardwood, a noble wood, root wood or metal or of several such materials. In order to avoid that the user comes into contact with hot surfaces, critical points are provided with thermal insulation or consist of heat-insulating materials.
  • a heat-resistant material such as a thermoset, a multi-component plastic, a hardwood, a noble wood, root wood or metal or of several such materials.
  • the housing 12 is designed in two parts, the front region 14 and the rear region 16 having one
  • Connection 20 can be joined.
  • the front area 14 and the rear area 16 of the housing 12 can be plugged into one another, a guide, not shown in FIG. 1, in which a projection engages in a groove, ensures a defined position of the rear area 16 with respect to the front area 14 and prevents twisting.
  • a thin-walled union nut 21, which engages an external thread on the rear region 16, serves to secure it.
  • An insulating ring 22 largely prevents heat transfer from the front region 14 of the housing 12, which is heated during operation, to the rear region 16 with the mouthpiece 18.
  • a substrate holder 26 which has a guide sleeve 28 matched to the outer diameter of the substrate portion 1, is used to hold the substrate portion 1.
  • a heating surface 30 Arranged behind the guide sleeve 28 is a heating surface 30 which is hollow cylindrical in the exemplary embodiment. Behind the heating surface 30, the substrate holder 26 has a rear cavity 32 into which the rear region of a substrate portion 1 inserted can be inserted.
  • An axially arranged flow channel 34 extends over the full length of the rear region 16 of the housing 12 and extends from the rear cavity 32 to the rear end of the mouthpiece 18.
  • the heating surface 30 is a component of a heating device operating in the exemplary embodiment as a flameless operating annealing catalyst for heating the substrate holder 26.
  • Combustion air for operating the heating device can enter the housing 12 via air inlet openings 36 in the front region 14.
  • the heating surface 30 When the heating surface 30 is at a high temperature, it heats the zone of the substrate portion 1 that is located in their area. If, in the exemplary embodiment, the heating surface 30 is designed as a hollow cylinder, it heats the region of the substrate portion 1 that is just arranged in its interior.
  • the inner diameter of the heating surface 30 is larger than the outer diameter of the substrate portion 1. The heat from the heating surface 30 is thereby the substrate portion 1 is mainly transported by radiation.
  • the heating surface 30 can also be arranged in such a way that heat is transported by conduction. In this case, it is advantageous if the heating surface 30 does not directly touch the substrate portion 1, but if a jacket, preferably provided with bores, is arranged within the heating surface 30, which is made of a good heat-conducting material such as aluminum and whose dimensions correspond to the Substrate portion 1 is matched so that it preferably lies directly on the substrate portion 1 (not shown in Figure 1). Numerous variants are conceivable for the design of the heating surface 30. Thus, several heating surfaces can also be provided, for example two heating surfaces arranged parallel to one another, or other shapes can be selected for the heating surface, for example a shape with a channel-like profile. It is essential that the heating surface 30 causes the zone of the substrate portion 1 in its area to be heated via the outside of the substrate portion 1, that is to say direct heating, in contrast to indirect heating, in the case of the heated gas (especially air) through the substrate portion is pulled.
  • the heating medium required for operating the heating device for example butane gas, pentane or isopropanol, is located in a heating medium tank 38 which is arranged in the rear region 16 of the housing 12.
  • the heating medium tank 38 can be refilled via a refill nozzle 40 which is guided to the outside and is provided with a closure.
  • the heating medium tank 38 is designed in a ring-like manner, the flow channel 34 leading through its axial region.
  • a one designed as a refill cartridge can also be used Heating medium tank may be provided, which is used as a whole in the rear region 16 of the housing 12.
  • a valve 42 In order to lead heating medium from the heating medium tank 38 to the heating surface 30, a valve 42 has to be opened, which opens into a heating medium line 44 which is connected to the heating surface 30. Since, in the exemplary embodiment, the front area 14 can be separated from the rear area 16 of the housing 12, the heating medium line 44 must also have a separation point which is designed as a sealed coupling 46.
  • a mechanical switching device is used to ignite the heating means and to actuate the valve 42, which has a ring 48 which can be displaced axially on the front region 14 of the housing 12 and is poorly heat-conducting.
  • On the outside of the ring 48 is provided with a grip surface.
  • the valve 42 is opened so that heating medium can flow from the heating medium tank 38 to the heating surface 30, and at the same time actuates a piezoelectric igniter 50, which causes catalytic combustion initiates the heating medium.
  • the ring 48 can be locked by twisting.
  • the valve 42 remains open in this position of the ring 48 so that the catalytic combustion continues and the heating surface 30 emits heat, even if the igniter 50 is not active during this period.
  • the ring 48 is unlocked by rotating in the opposite direction and pushed forward.
  • the valve 42 closes.
  • a spring not shown in FIG. 1, preferably presses the ring 48 forward.
  • the mechanical components for actuating valve 42 and igniter 50 are not shown in FIG. 1 for the sake of clarity.
  • a user wants to use the inhalation device 10 he first pushes a fresh portion of substrate 1, for example a special slim cigarette with a diameter of 5 mm and a length of 40 mm, through the loading opening 24 until the rear zone of the portion of substrate 1 is in the area the heating surface 30 comes to rest. If he wants to inhale the first train, he pulls the ring 48 towards the mouthpiece 18 and locks it by twisting. As already explained, heating medium thereby flows to the heating surface 30 and is ignited. Due to the heat given off by the catalytic combustion, the zone of the substrate portion 1 is heated in the area of the heating surface 30, so that the aerosol-forming material 2 releases flavor aerosol.
  • substrate 1 for example a special slim cigarette with a diameter of 5 mm and a length of 40 mm
  • the inhaled aerosol also contains carbon dioxide and water vapor from the catalytic combustion of the heating medium. If the housing 12 has a window (not shown in FIG. 1) which allows the user a view of the heating surface 30, he sees that the heating surface 30 lights up red when ignited and, when he pulls on the mouthpiece 18, its color is in light red changes.
  • the user Before taking the next train, the user pushes the substrate portion 1 a little towards the mouthpiece 18. The rear, smoked zone of the substrate portion 1 enters the rear cavity 32, while a fresh zone enters the area of the heating surface 30. This way, fresh flavor aerosol flows to the user on the next train.
  • the user can unlock the ring 48 after each pull by turning it counterclockwise and push it forward so that the valve 42 closes. The last pull is removed when the substrate portion 1 on the insulating ring 22 is present. The user can then pull the substrate portion 1 out of the housing 12 through the loading opening 24 and dispose of it.
  • the user ensures by pulling the mouthpiece 18 that the ambient air flows through the air inlet openings 36 to the heating surface 30 (catalytic combustion) and through the air inlet opening 4 into the substrate portion 1 and through the substrate portion 1.
  • the combustion gases generated in the catalytic combustion are sucked into the flow channel 34 and, as already mentioned, add to the inhaled aerosol. Since the catalytic combustion is fairly complete, the content of carbon monoxide and other undesirable substances from the combustion in the inhaled aerosol is low, so that this type of gas and aerosol guidance is acceptable.
  • a sleeve made of heat-conducting metal which is open at both ends can be provided within the heating surface 30 and connects the guide sleeve 28 to the rear cavity 32, so that the combustion gases have no access to the flow channel 34.
  • This sleeve preferably lies in heat-conducting contact against an inserted substrate portion 1.
  • the wall of the housing 12 must have at least one outlet opening for the combustion gases. The desired flow from the air inlet openings 36 via the heating surface 30 to this outlet opening can be achieved by a temperature gradient (thermals).

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Spray-Type Burners (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Nozzles (AREA)
  • Manufacture Of Tobacco Products (AREA)
EP99972075A 1998-11-12 1999-11-08 System zur bereitstellung eines inhalierbaren aerosols Withdrawn EP1128743A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19854009 1998-11-12
DE19854009A DE19854009C2 (de) 1998-11-12 1998-11-12 System zur Bereitstellung eines inhalierbaren Aerosols
PCT/EP1999/008427 WO2000028842A1 (de) 1998-11-12 1999-11-08 System zur bereitstellung eines inhalierbaren aerosols

Publications (1)

Publication Number Publication Date
EP1128743A1 true EP1128743A1 (de) 2001-09-05

Family

ID=7888732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99972075A Withdrawn EP1128743A1 (de) 1998-11-12 1999-11-08 System zur bereitstellung eines inhalierbaren aerosols

Country Status (15)

Country Link
EP (1) EP1128743A1 (ja)
JP (1) JP2002529111A (ja)
KR (1) KR20010089445A (ja)
CN (1) CN1333657A (ja)
AU (1) AU1160000A (ja)
BG (1) BG105505A (ja)
CZ (1) CZ20011659A3 (ja)
DE (1) DE19854009C2 (ja)
EA (1) EA002583B1 (ja)
HK (1) HK1053409A1 (ja)
HR (1) HRP20010334A2 (ja)
HU (1) HUP0104222A2 (ja)
PL (1) PL348205A1 (ja)
SK (1) SK6402001A3 (ja)
WO (1) WO2000028842A1 (ja)

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US11672279B2 (en) 2011-09-06 2023-06-13 Nicoventures Trading Limited Heating smokeable material
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US11924930B2 (en) 2015-08-31 2024-03-05 Nicoventures Trading Limited Article for use with apparatus for heating smokable material

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EA002583B1 (ru) 2002-06-27
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BG105505A (en) 2001-12-29
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HRP20010334A2 (en) 2002-06-30
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KR20010089445A (ko) 2001-10-06
DE19854009C2 (de) 2001-04-26

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