EP3923752A1 - Unité vaporisateur-réservoir pour un inhalateur, de préférence un produit de cigarette électronique, produit de cigarette électronique et structure de mèche - Google Patents

Unité vaporisateur-réservoir pour un inhalateur, de préférence un produit de cigarette électronique, produit de cigarette électronique et structure de mèche

Info

Publication number
EP3923752A1
EP3923752A1 EP20705326.5A EP20705326A EP3923752A1 EP 3923752 A1 EP3923752 A1 EP 3923752A1 EP 20705326 A EP20705326 A EP 20705326A EP 3923752 A1 EP3923752 A1 EP 3923752A1
Authority
EP
European Patent Office
Prior art keywords
evaporator
wick structure
liquid
tank unit
liquid reservoir
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.)
Granted
Application number
EP20705326.5A
Other languages
German (de)
English (en)
Other versions
EP3923752B1 (fr
Inventor
Michael Kleine Wächter
Thomas Müller
Lennart KOCK
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.)
Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau GmbH
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 Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP3923752A1 publication Critical patent/EP3923752A1/fr
Application granted granted Critical
Publication of EP3923752B1 publication Critical patent/EP3923752B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • A24F40/44—Wicks
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/42—Cartridges or containers for inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10—Devices using liquid inhalable precursors

Definitions

  • Vaporizer-tank unit for an inhaler preferably an electronic cigarette product, electronic cigarette product and wick structure
  • the present invention relates to a vaporizer-tank unit for an inhaler, preferably an electronic cigarette product, comprising at least one electric vaporizer for vaporizing liquid supplied by the vaporizer, a liquid reservoir for storing liquid, and a capillary wick structure, wherein the liquid passes through Capillary forces can be conveyed from the liquid storage to an inlet side of the evaporator.
  • the invention also relates to an inhaler, preferably an electronic cigarette product, and a wick structure.
  • a disadvantage of the wick coil technology is that a lack of supply of liquid leads to local overheating, which can result in pollutants. It is important to avoid this so-called “dry puff”.
  • such evaporator units are often leaky due to production, so that liquid can escape in an undesirable manner, for example via the air supply and / or vapor discharge.
  • Wick structure is provided which, on the one hand, contacts the inlet side and, on the other hand, protrudes with an inlet end into the volume of the liquid storage device.
  • a voluminous sponge, cotton wool or the like is usually introduced into the liquid reservoir adjacent to the inlet end of the wick structure as an intermediate store for a certain transitional supply amount of liquid.
  • Sponge acts as a capillary intermediate storage or intermediate conductor for liquid, so that the evaporator can be supplied with liquid uninterruptedly regardless of the position and / or orientation and largely independent of the fill level.
  • the introduction of a sponge is complex in terms of production technology and can easily be converted into a Lead insufficient fluid conduction between the sponge and the wick structure, which is due, for example, to the fact that the sponge does not make sufficient contact with the wick structure.
  • the requirements for the dimensions of the liquid reservoir and the sponge and their assembly are therefore high.
  • the wick structure is in one piece and contacts and / or forms the liquid reservoir over at least one circumferential section.
  • the one-piece design of the wick structure avoids additional contact between a sponge according to the prior art and a wick.
  • the one-piece wick only has one contact with the inlet side of the evaporator.
  • a liquid-conducting contact between the inlet side of the evaporator and the wick structure can be reliably established without, for example, bubbles or cavities being able to arise.
  • the contacting and / or formation of the circumferential section has the consequence that the wick structure can absorb and temporarily store liquid from an area of the liquid reservoir, even if the liquid reservoir is almost empty and the liquid temporarily moves away from the circumferential section of the wick structure as a result of gravity Wick structure, the liquid once absorbed is no longer transferred to the liquid reservoir. is given. It is therefore sufficient for sufficient intermediate storage if the liquid occasionally "sloshes" against the wick structure and / or can immerse it in the liquid.
  • the wick structure can contact the peripheral portion of the liquid reservoir in that the wick structure extends up to the peripheral portion, ie. the wick structure protrudes into the liquid reservoir.
  • the wick structure can even form the liquid reservoir in a more spacious manner in that the wick structure takes up further areas of the liquid reservoir.
  • the wick structure preferably contacts the liquid reservoir along an inner surface of an outer wall of the liquid reservoir, so that the wick structure can absorb the liquid until the liquid reservoir is completely emptied.
  • Wick structure can contact the inner surface of the outer wall by means of an interference fit. Alternatively, however, a gap can be provided which defines a minimum distance between the inner surface and the wick structure in order to simplify the assembly of the wick structure.
  • the liquid reservoir preferably has a longitudinal axis and the wick structure extends radially in at least two diametrical directions perpendicular to the longitudinal axis so that the wick structure can take the liquid independently of the orientation of the liquid reservoir, in particular independently of the rotation of the liquid reservoir around the longitudinal axis of the liquid reservoir can.
  • an air duct extending through the fluid reservoir is provided in the fluid reservoir so that a more effective construction of the evaporator-tank unit can be made possible.
  • the wick structure has several diverging and / or opposing wick sections which contact different circumferential sections, since with the wick structure can absorb the liquid regardless of the orientation of the liquid reservoir. This enables contact with the liquid in opposite sections of the liquid reservoir and allows the liquid to fall dry
  • the wick structure advantageously has a U-shaped cross section with an apex and is arranged so that the wick structure contacts the inlet side at its apex in order to enable an effective construction and simple assembly of the evaporator-tank unit.
  • the circumferential section advantageously has at least an angle of 45 °, further advantageously at least 90 °, particularly advantageously at least 180 °, for example 270 ° and up to 360 °, in order to promote an orientation and fill level-independent supply of the wick structure with liquid .
  • the circumferential section can be connected or formed from several separate sub-sections. For example, two or more circumferential sections evenly distributed in particular in the circumferential direction can be contacted and / or formed. In particular, two circumferential sections each having an angle of 90 ° can be provided, which are, however, arranged at a distance from one another, for example diametrically opposite one another.
  • the wick structure preferably has a mechanical holder for holding the evaporator and / or a carrier.
  • the wick structure is preferably at least partially in the shape of a hollow cylinder in order to be able to advantageously contact and / or form the circumferential surface of a cylindrical liquid reservoir.
  • Liquid can be stored in the cavity.
  • the cavity can form a large part of the volume of the liquid reservoir, for example at least 50%, preferably at least 70% and more preferably at least 90%.
  • the wick structure advantageously forms the liquid reservoir at least partially.
  • the liquid reservoir can thus be made up of several parts, the wick structure being able to form, for example, a cylindrical section of the liquid reservoir. From further sections of the liquid reservoir can be formed, for example, by a plastic. Different sections of the liquid reservoir can, for example, be glued and / or connected to one another with mechanical elements such as notches, noses or clips.
  • the wick structure preferably forms an outer wall of the liquid storage device in order to ensure a simple structure of the evaporator-tank unit and at the same time to promote an orientation- and fill-level-independent supply of liquid to the wick structure.
  • the wick structure preferably extends from the electric evaporator into the liquid reservoir and has a pore volume per pore that increases with the distance from the evaporator, so that the liquid is optimally conveyed to the Evaporator and at the same time a buffer storage of liquid in the wick structure is advantageously achieved.
  • the wick structure advantageously has a storage section and a supply section, and the volume of the storage section in the liquid storage is greater than the volume of the supply section adjacent to the evaporator, so that the wick structure can protrude into the liquid storage in areas remote from the evaporator and at the same time have a preferred buffer effect can meet for intermediate storage of liquid.
  • the wick structure preferably has a lacquered, coated and / or liquid-tight surface in order to be able to form a circumferential section of the liquid reservoir which is sealed and impermeable to liquid. This ensures that the wick structure can form or replace the outer wall of the liquid reservoir.
  • the wick structure preferably consists of a porous glass.
  • the wick structure advantageously does not consist of a plurality of fibers between which cavities for the transport of liquid and for the liquid line are formed. Rather, the wick structure comprises a porous solid. This can consist of porous ceramic, but preferably of porous glass. In particular consisting of a borosilicate glass or another oxide glass.
  • the blanks of the wick structure can be effectively produced with a pressing tool.
  • a wide variety of spatial shapes or geometries are thus conceivable, an in particular axially extending air duct being preferably provided within an outer outer wall of the liquid reservoir in the interior of the liquid reservoir can be .
  • the pore size and the distribution of the pores of the wick structure can be adjusted.
  • a pore gradient and / or pore size gradient can be set, the pore sizes decreasing from the liquid reservoir towards the evaporator.
  • the pore size can for example have a diameter from 0 to 500 ⁇ m, preferably from 10 nm to 100 ⁇ m.
  • the wick structure can also consist of a composite of porous substances and, for example, comprise sections made of porous glass and sections made of ceramic.
  • the wick structure made of glass is particularly chemically inert and temperature-stable, which is particularly advantageous in contact with the evaporator.
  • the wick structure is advantageously colored and is visible from the outside in order to be able to observe the fill level of the liquid reservoir and to increase the visual quality of the evaporator-tank unit.
  • the wick structure can be arranged in the interior of a transparent housing of the liquid reservoir.
  • the wick structure can form the liquid reservoir or the housing and be directly visible from the outside.
  • a wick structure for an inhaler in particular a special electronic cigarette product, is in one piece and consists of a porous glass in order to provide a wick structure that can be produced in a particularly effective and versatile manner.
  • FIG. 1 is a schematic view of an inhaler
  • Fig. 2 shows a perspective section through an evaporator and, schematically, an evaporator-tank unit
  • Fig. 5 is a perspective view of a United evaporator tank unit according to the invention.
  • Tank unit and several embodiments of a wick structure according to the invention
  • Fig. 7 shows a perspective view of an evaporator / tank unit according to the invention and several embodiments of a wick structure according to the invention.
  • FIG. 8 shows a wick structure and a section through an evaporator-tank unit according to the invention.
  • FIG. 1 shows schematically an inhaler 10 or an electronic cigarette product.
  • the inhaler 10 comprises a housing 1 1 in which an air duct 30 or chimney is provided between at least one air inlet opening 231 and an air outlet opening 24 at a mouth end 32 of the cigarette product 1 0.
  • the mouth end 32 of the inhaler 10 denotes the End at which the consumer pulls for inhalation, thereby applying a negative pressure to the inhaler 10, and generating an air stream 34 in the air duct 30.
  • the inhaler 1 0 advantageously consists of a base part 16 and an evaporator-tank unit 1, which comprises an evaporator 60 and a liq stechniks appointed 1 8, and can in particular be designed in the form of a replaceable cartridge.
  • the liquid keits acknowledged 18 can be refilled by the user of the inhaler 10.
  • the air sucked in through the air inlet opening 231 is conducted in the air duct 30 to the at least one evaporator 60.
  • the evaporator 60 is connected or can be connected to the liquid reservoir 18, in which at least one liquid 50 is stored.
  • a porous and / or capillary, liquid-conducting wick structure 19 is advantageously arranged on an inlet side 61 of the evaporator 60.
  • the evaporator 60 evaporates liquid 50, which is supplied to the evaporator 60 from the liquid reservoir 18 by the wick structure 19 by means of capillary forces, and supplies the evaporated liquid as aerosol / vapor at an outlet side 64 to the air stream 34.
  • the electronic cigarette 10 further includes an electrical energy store 14 and an electronic control device 1 5.
  • the energy store 14 is usually arranged in the base part 16 and can in particular be an electrochemical disposable battery or a rechargeable electrochemical battery, for example a lithium ion -Battery, be.
  • the evaporator / tank unit 1 is arranged between the energy store 14 and the mouth end 32.
  • the electronic control device 15 comprises at least one digital data processing device, in particular Their microprocessor and / or microcontroller, in the base part 1 6 (as shown in FIG. 1) and / or in the evaporator-tank unit 1.
  • a sensor for example a pressure sensor or a pressure or flow switch, is advantageously arranged in the housing 11, the control device 15 being able to determine on the basis of a sensor signal output by the sensor that a consumer is pulling at the mouth end 32 of the cigarette product 10, to inhale.
  • the control device 1 5 controls the evaporator 60 in order to add liquid 50 from the liquid storage device 18 as an aerosol / vapor into the air stream 34.
  • the at least one evaporator 60 is arranged in a part of the evaporator-tank unit 1 facing away from the mouth end 32. Effective electrical coupling and control of the evaporator 60 are thus possible.
  • the air flow 34 advantageously leads to the air outlet opening 24 through an air duct 30 running axially through the liquid reservoir 18.
  • the liquid 50 to be dosed stored in the liquid reservoir 18 is, for example, a mixture of 1,2-propylene glycol, glycerol, water, at least one aroma and / or at least one active ingredient, in particular nicotine.
  • the specified components of the liquid 50 are not mandatory.
  • aromas and / or active ingredients, in particular nicotine can be dispensed with.
  • the evaporator-tank unit 1 or cartridge or the base part 1 6 advantageously comprise a non-volatile data memory for storing information or parameters relating to the evaporator-tank unit 1 or cartridge.
  • the data store can be part of the electronic control device 1 5.
  • information on the composition of the liquid stored in the liquid store 18, information on the process profile, in particular power / temperature control is advantageous;
  • Data relating to copy protection and protection against forgery an ID for the unique identification of the evaporator-tank unit 1 or cartridge, serial number, date of manufacture and / or expiry date, and / or number of puffs (number of inhalation puffs by the consumer) or the usage time saved.
  • the data memory is advantageously electrically connected or connectable to the control device 1 5.
  • User-related data in particular about smoking behavior, could also be stored and stored in the inhaler 1 0 and / or in an external memory which can be connected to the inhaler 1 0 in a suitable and known manner, at least temporarily, for communication purposes are preferably also used to control and regulate the inhaler.
  • Additional channels in particular at least one secondary air channel 110, which meet the air channel 30 downstream of the evaporator 60, can ensure that the gas / aerosol mixture is mixed with fresh air from a secondary air stream 102 and / or processes of post-treatment and / or recondensation regulate.
  • FIG. 2 shows a perspective section through an evaporator 60 and, schematically, an evaporator-tank unit 1.
  • the evaporator tank unit 1 comprises a block-shaped, preferably monolithic, radiator or evaporator 60 preferably made of an electrically conductive material, in particular a semiconductor material, preferably silicon. It is not necessary for the entire evaporator 60 to consist of an electrically conductive material. For example, it may be sufficient that the surface of the evaporator 60 is electrically conductive, for example metallic, coated or preferably suitably doped. In this case, the entire surface does not have to be coated; for example, metallic or preferably non-metallic or non-metallic laminated metallic conductor tracks can be provided on a non-conductive or semiconductive base body. It is also not absolutely necessary for the entire evaporator 60 to heat; it can be sufficient, for example, if a section or a heating layer of the evaporator 60 in the area of the outlet side 64 heats.
  • the evaporator 60 is provided with a plurality of microchannels or liquid channels 62, which have an inlet side
  • the mean diameter of the liquid channels 62 is preferably in the range between 5 pm and 200 pm, more preferably in the range between 30 pm and 150 pm, even more preferably in the range between 50 pm and 100 pm. Because of these dimensions, a capillary effect is advantageously generated, so that liquid penetrating into a liquid channel 62 on the inlet side 61 rises through the liquid channel 62 until the liquid channel 62 is filled with liquid.
  • the volume ratio of liquid channels 62 to evaporator 60 which can be referred to as the porosity of the evaporator 60, is, for example, in the range between 10% and 50%, advantageously in the range between 15% and 40%, even more advantageously in the range between 20% and 30%, and is, for example, 25%.
  • the edge lengths of the surfaces of the evaporator 60 provided with liquid channels 62 are, for example, in the range between 0.5 mm and 3 mm, preferably between 0.5 mm and 1 mm.
  • the dimensions of the surfaces of the evaporator 60 provided with liquid channels 62 can be, for example: 0.95 mm ⁇ 1.75 mm or 1.9 mm ⁇ 1.75 mm or 1.9 mm ⁇ 0.75 mm.
  • the edge lengths of the evaporator 60 can for example be in the range between 0.5 mm and 5 mm, preferably in the range between 0.75 mm and 4 mm, more preferably in the range between 1 mm and 3 mm.
  • the area of the evaporator 60 (chip size) can be, for example, 1 mm x 3 mm, 2 mm x 2 mm or 2 mm x 3 mm.
  • the width b of the evaporator 60 is preferably in the range between 1 mm and 5 mm, more preferably in the range between 2 mm and 4 mm, and is, for example, 3 mm.
  • the height h of the evaporator 60 is preferably in the range between 0.05 mm and 1 mm, more preferably in the range between 0.1 mm and 0.75 mm, even more preferably in the range between 0.2 mm and 0.5 mm and is, for example, 0.3 mm. Even smaller evaporators 60 can be manufactured, provided and operated properly.
  • the number of liquid channels 62 is preferably in the range between four and 1,000. In this way, the heat input into the liquid channels 62 can be optimized and a guaranteed high evaporation capacity and a sufficiently large vapor outlet surface can be achieved.
  • the liquid channels 62 are arranged in the form of a square, rectangular, polygonal, round, oval or other shaped array.
  • the array can be designed in the form of a matrix with s columns and z rows, where s advantageously in the range between 2 and 50 and further advantageously in the range between 3 and 30 and / or z advantageously in the range between 2 and 50 and further advantageously in the range is between 3 and 30. In this way, an effective and easily producible arrangement of the liquid channels 62 with a guaranteed high evaporation capacity can be realized.
  • the cross section of the liquid channels 62 can be square, rectangular, polygonal, round, oval or otherwise shaped, and / or change in sections in the longitudinal direction, in particular increase, decrease or remain constant.
  • the length of one or each liquid channel 62 is preferably in the range between 100 pm and 1000 pm, more preferably in the range between 150 pm and 750 pm, even more preferably in the range between 180 pm and 500 pm and is, for example, 300 pm. In this way, optimal liquid uptake and portion formation can be achieved with sufficiently good heat input from the evaporator 60 into the liquid channels 62.
  • the distance between two liquid channels 62 is preferably at least 1.3 times the clear diameter of a liquid keitskanals 62, the distance being based on the central axes of the two liquid channels 62.
  • the distance can preferably be 1.5 to 5 times, more preferably 2 to 4 times, the clear diameter of a liquid channel 62. In this way This enables optimal heat input into the evaporator 60 and a sufficiently stable arrangement and wall thickness of the liquid channels 62.
  • the evaporator 60 can also be referred to as a volume heater.
  • the evaporator-tank unit 1 comprises a carrier 4 with a through opening 104 for the fluid-conducting connection of the evaporator 60 and a liquid reservoir 1 8.
  • a wick structure 19 is arranged in the through opening 104.
  • the inlet side 61 of the evaporator 60 is connected to the liquid reservoir 18 via the wick structure 19 in a fluid-conducting manner.
  • the wick structure 19 serves to passively convey liquid 50 from the liquid reservoir 18 to the evaporator 60 by means of capillary forces.
  • the wick structure 19 makes contact with the inlet side 61 of the evaporator 60 advantageously over a large area and covers all of the liquid channels 62 of the evaporator 60 on the inlet side.
  • the wick structure 19 is connected in a fluid-conducting manner to the fluid reservoir 18.
  • the wick structure 1 9 consists of porous and / or capillary material Ma, which is due to capillary forces able to passively promote liquid evaporated by the evaporator 60 in sufficient quantities from the liquid reservoir 1 8 to the evaporator 60 in order to empty the liquid channels 62 and prevent problems arising from it.
  • the wick structure 19 advantageously consists of an electrically non-conductive material in order to prevent undesired heating of liquid to avoid speed in the wick structure 19 by current flow.
  • the wick structure 19 advantageously has a low thermal conductivity.
  • the wick structure 19 advantageously consists of a glass, in particular a pressed borosilicate glass.
  • the wick structure 19 can, however, be made of one or more of the materials cotton, cellulose, acetate, plastic foam, plastic sponge, glass fiber fabric, glass fiber ceramic, sintered ceramic, ceramic paper, aluminosilicate paper, metal foam, metal sponge, another heat-resistant, porous and / or capillary material with a suitable delivery rate, or a composite of two or more of the aforementioned materials exist.
  • the wick structure 19 can comprise at least one ceramic fiber paper and / or a porous ceramic.
  • wick structure 19 consists of an electrically and / or thermally conductive material
  • an insulating layer made of an electrically and / or thermally insulating material, for example glass, ceramic or plastic, is advantageously with it between the wick structure 19 and the evaporator 60 Insulating layer extending, with the liquid channels 62 corresponding openings provided.
  • the volume of the wick structure 19 is preferably in the range between 1 mm A 3 and 1 0 mm A 3, more preferably in the range between 2 mm A 3 and 8 mm A 3, even more preferably in the range between 3 mm A 3 and 7 mm A 3 and is, for example, 5 mm A 3.
  • the volume of the wick structure 19 can be equal to a large part of the volume of the liquid reservoir 18.
  • the dimensions of the liquid reservoir 18 can be larger than the wick structure 19.
  • the wick structure 19 can partially form the liquid storage tank 18.
  • the wick structure 19 can be inserted into an opening in a housing of the liquid reservoir 18, for example.
  • a plurality of evaporators 60 can also be assigned to a liquid reservoir 18.
  • An advantageous volume of the liquid reservoir 18 is in the range between 0.1 ml and 5 ml, preferably between 0.5 ml and 3 ml, more preferably between 0.7 ml and 2 ml or 1.5 ml.
  • the evaporator tank unit 1 is preferably connected and / or connectable to a heating voltage source 71 controllable by the control device 1 5, which cut 1 32a, 132b of the evaporator 60 via electrical lines 1 05a, 1 05b in a contact area on opposite edge sections is connected to this, so that an electrical voltage Uh generated by the heating voltage source 71 leads to a current flow through the evaporator 60. Due to the ohmic resistance of the electrically conductive evaporator 60, the flow of current leads to heating of evaporator 60 and therefore to evaporation of liquid contained in liquid channels 62. Generated this way
  • a voltage curve Uh (t) adapted to the liquid mixture used is preferably stored in the data memory of the inhaler 10.
  • the evaporation temperature is preferably in the range between 100.degree. C. and 400.degree. C., more preferably between 150.degree. C. and 350.degree. C., even more preferably between 190.degree. C. and 290.degree.
  • the evaporator 60 can advantageously be produced from sections of a wafer using thin-film layer technology, which has a layer thickness of preferably less than or equal to 1000 ⁇ m, more preferably 750 ⁇ m, even more preferably less than or equal to 500 ⁇ m. Surfaces of the evaporator 60 can advantageously be hydrophilic.
  • the outlet side 64 of the evaporator 60 can advantageously be microstructured or have micro-grooves.
  • the evaporator tank unit 1 is set so that an amount of liquid preferably in the range between 1 pl and 20 pl, more preferably between 2 pl and 10 pl, even more preferably between 3 pl and 5 pl, typically 4 pl per puff of the Consumption, is added.
  • the evaporator-tank unit can preferably be adjustable with regard to the amount of liquid / vapor per puff, ie from 1 s to 3 s per puff duration. The sequence of the evaporation process is explained below by way of example.
  • the voltage source 71 or the energy store 14 is switched off for the heating process.
  • the voltage Uh is set such that the evaporation temperature in the evaporator 60 and thus in the liquid channels 62 is adapted to the individual evaporation behavior of the liquid mixture used. This prevents the risk of local overheating and the creation of pollutants.
  • undesired differential evaporation of a liquid mixture can also be counteracted or counteracted or such can be avoided. Otherwise, a liquid mixture could prematurely lose components due to different boiling temperatures in the course of a sequence of evaporation processes, especially “puffs”, before the reservoir 18 of the liquid 50 is completely emptied, which during operation has undesirable effects such as the lack of constancy of the dosage a user, especially with a pharmaceutically effective liquid.
  • the heating voltage source 71 is deactivated. Since the liquid properties and quantity are advantageously known exactly and the Ver evaporator 60 has a measurable temperature-dependent resistance this point in time can be determined or controlled very precisely.
  • the liquid channels 62 are predominantly or completely emptied.
  • the heating voltage 71 is then kept switched off until the liquid channels 62 are refilled by means of replenishing liquid through the wick structure 19. As soon as this is the case, the next heating cycle can be started by switching on the heating voltage 71.
  • the control frequency of the evaporator 60 generated by the heating voltage source 71 is generally advantageously in the range from 1 Hz to 50 kHz, preferably in the range from 30 Hz to 30 kHz, even more advantageously in the range from 100 Hz to 25 kHz.
  • the frequency and the duty cycle of the heating voltage Uh for the Ver evaporator 60 are advantageously adapted to the natural oscillation or natural frequency of the bubble oscillations during the bubble boiling.
  • the period 1 / f of the heating voltage can therefore advantageously be in the range between 5 ms and 50 ms, further advantageously between 10 ms and 40 ms, even more advantageously between 15 ms and 30 ms and be, for example, 20 ms.
  • frequencies other than those mentioned can be optimally adapted to the natural oscillation or natural frequency of the bubble oscillations.
  • the maximum heating current generated by the heating voltage Uh is preferably not more than 7 A, more preferably not more than 6.5 A, even more preferably not more than 6 A and optimally in the range between see 4 A and 6 A should be in order to ensure concentrated steam while avoiding overheating.
  • the delivery rate of the wick structure 19 is in turn optimally adapted to the evaporation rate of the evaporator 60, so that sufficient liquid 50 can be fed at any time and the area in front of the evaporator 60 is avoided.
  • the evaporator device 1 is preferably manufactured on the basis of M EMS technology, in particular from silicon, and is therefore advantageously a micro-electro-mechanical system.
  • a structure is advantageously proposed consisting of a Si-based evaporator 60, advantageously planar at least on the inlet side 61, and one or more underlying capillary structures 19 with advantageously different pore sizes.
  • the wick structure 19 arranged directly on the inlet side 61 of the evaporator 60 prevents the formation of bubbles on the inlet side 61 of the evaporator 60, since gas bubbles prevent any further conveying effect and at the same time lead to (local) overheating of the evaporator 60 due to a lack of cooling by subsequent liquid .
  • FIG. 3 shows an evaporator-tank unit 1 according to the prior art.
  • the evaporator tank unit 1 comprises a liquid reservoir 18 for storing liquid 50, a carrier 4 and a wick structure 1 9.
  • the carrier 4 holds an evaporator 60, not shown, which conducts liquid on an inlet side 61 of the evaporator 60 with the wick structure 19 connected is.
  • the evaporator 60 can add the evaporated liquid 50 as vapor and / or aerosol to an air stream 34 flowing through an air duct 30.
  • the cylindrical wick structure 19 can, however, as shown in FIG. H.
  • the wick structure 19 may lack a supply of liquid 50 if the liquid reservoir 18 is not completely filled with liquid 50 and / or the evaporator-tank unit 1 is oriented such that the liquid 50 gravity flows into the wick structure 1 9 not reached. This can result in a lack of liquid on the evaporator 60.
  • the critical condition is the state in which the wick structure 19 is "above” when the inhaler 10 is horizontally oriented, but a remainder of liquid 50 is only "below” in the liquid reservoir 18, as shown in FIG.
  • FIG. 4 shows an evaporator tank unit 1 with a sponge 199 or an absorbent element, impregnated substrate or hydroscopic pad according to the prior art to reduce the risk of a lack of liquid on the wick structure 19 and / or on the evaporator 60.
  • the evaporators - Tank unit 1 differs from the embodiment shown in Figure 3 to the sponge 1 99.
  • the sponge 1 99 is a separate component from the wick structure 19, which is connected to the wick structure 19 in a fluid-conducting manner. However, connecting the wick structure 19 and the sponge 99 is complex and prone to errors.
  • FIG. 5 shows a perspective view of an evaporator / tank unit 1 according to the invention.
  • the evaporator tank unit 1 comprises an evaporator 60, which is held by a carrier 4, a nen liquid storage 18 for storing liquid 50 and a capillary wick structure 19, wherein liquid 50 can be conveyed by capillary forces from the liquid storage 18 to an inlet side 61 of the evaporator 60.
  • the liquid reservoir 18 stores the liquid 50 in a volume delimited by an outer wall 182.
  • the liquid reservoir 18 or the outer wall 182 of the liquid reservoir 18 can for example be made of a plastic and / or a coated, lacquered and / or surface-treated glass.
  • the liquid reservoir 18 has a longitudinal axis L.
  • An air channel 30 extending through the fluid reservoir 18 runs along or parallel to the longitudinal axis L.
  • the air channel 30 is arranged within the fluid reservoir 18.
  • the air channel 30 forms an inner wall 1 85 of the liquid reservoir 1 8.
  • the liquid reservoir 1 8 stores liquid 50 between the inner wall 1 85 or the air duct 30 and the outer wall 1 82 the evaporator tank unit 1 can be formed.
  • the evaporator 60 has an outlet side 64 which is arranged in such a way that the evaporator 60 can add evaporated liquid 50 as vapor and / or aerosol to an air stream 34 flowing through the air duct 30.
  • the outlet side 64 can face the air duct 30 or the longitudinal axis L of the liquid reservoir 18 when the evaporator 60, as shown here by way of example, is arranged at a radial distance from the longitudinal axis L.
  • the liquid reservoir 18 is advantageously extended the greatest along the longitudinal axis L.
  • the liquid reservoir 18 has a rotational symmetry about the longitudinal axis L at least in sections.
  • the liquid reservoir 18 has a rotationally symmetrical section between an end face and the carrier 4.
  • the wick structure 19 is in one piece and is designed to supply liquid 50 to the evaporator 60 independently of the orientation of the evaporator tank unit 1, in that the wick structure 19 contacts the liquid reservoir 18 via a peripheral section 1 80a, 1 80b of the liquid reservoir 18. To this end, the wick structure 19 contacts the liquid reservoir 18 along an inner surface 181 of the outer wall 182 of the liquid reservoir 18. The contacting of the peripheral section 1 80a, 1 80b ensures that the wick structure 19 takes up liquid 50 and irrespective of the liquid level in the liquid reservoir 18 can forward to the evaporator 60.
  • the wick structure 19 extends in two diametrical directions perpendicular to the longitudinal axis L. In this embodiment, the wick structure 19 extends from the evaporator 60 on the one hand in this illustration upwards and on the other hand downwards.
  • the wick structure 19 has the two separate wick sections 1 91 a, 191 b, which contact different subsections of the circumferential section 180 a, 1 80 b.
  • the wick sections 1 91 a, 191 b protrude in particular into different, separate areas surface of the liquid reservoir 18 and thus improve the supply of the evaporator 60 with liquid 50.
  • the wick structure 19 has a U-shaped or horseshoe-shaped cross section with an apex 190.
  • the wick structure 19 is arranged such that the wick structure 19 contacts the inlet side 61 of the evaporator 60 at its apex 190.
  • the wick structure 19 contacts the liquid reservoir 18 in the peripheral section 1 80 a, 1 80 b. Due to the U-shape of the wick structure 19, the wick structure 19 can be shaped far into the liquid reservoir 18 by the free ends remote from the apex 190 or wick sections 191 a, 191 b of the wick structure 19 embracing the evaporator 60.
  • the circumferential section 1 80a, 180b has two contiguous subsections, a first lower section being assignable to the first wick section 1 91a and a second subsection to the second wick section 1 91b.
  • the circumferential section 1 80a, 180b has an angle of more than 1 80 °, for example approximately 270 °.
  • the wick structure 19 connects the inlet side 61 of the evaporator 60 in a liquid-conducting manner and independently of the orientation or the filling level of the liquid reservoir 18 with the liquid 50 stored in the liquid reservoir 18.
  • the wick structure 19 extends from the electrical evaporator 60 into the liquid reservoir 18 and has a pore volume per pore that increases with the distance from the evaporator 60.
  • the wick structure 19 comprises a storage section 184a and a feed section 1 84b, wherein in particular the feed section 1 84 can have smaller pores than the storage section 184a, which can serve as a liquid buffer.
  • the feed section 184b is that section of the wick structure 19 which contacts the inlet side 61 of the evaporator 60 and which feeds the liquid 50 to the evaporator 60.
  • the storage section 1 84a is that section of the wick structure 19 protruding into the liquid storage unit 18.
  • the storage section 184a is formed by the wick sections 191 a, 191 b or the free ends of the wick structure 19.
  • the volume of the storage section 184a is greater than the volume of the supply section 184b adjacent to the evaporator 60.
  • the feed section 1 84b is arranged in the region of the apex 1 90.
  • the wick structure has a mechanical support 192.
  • the mechanical holder 1 92 has various functions in the embodiment shown in FIG.
  • the mechanical holder 192 can be used to fasten the wick structure 19 to the carrier 4.
  • the wick structure 19 and / or the carrier 4 can be supported by the wick structure 19 within the evaporator tank unit 1 in different ways.
  • the holder 192 can serve to hold the evaporator 60.
  • the wick structure 19 advantageously consists of a porous glass, for example a borosilicate glass.
  • the wick structure 19 is advantageously colored in order to improve the visibility of the fill level of the liquid keits addressess 1 8.
  • FIG. 6 shows a section through an evaporator / tank unit 1 according to the invention and several embodiments according to the invention of a one-piece wick structure 19. From left to right, the illustration shows twice a wick structure 19 (a), (b), a wick structure 19 with an evaporator 60 (c) and an evaporator-tank unit 1 (d).
  • the left wick structure 19 in Figure 6 (a) has a bone shape; H.
  • the wick structure 19 comprises a centrally arranged feed section 1 84b and in this example two oppositely arranged wick sections 191a, 191b.
  • the wick sections 1 91 a, 191 b are only connected to one another via the central feed section 1 84 b.
  • the wick sections 191a, 191b form two separate storage sections 184a.
  • the wick structure 19 is thus set up to contact a liquid reservoir 18 in two separate circumferential sections 180a, 180b, see the evaporator / tank unit 1 in FIG. 6 (d).
  • the wick structure 19 has a round circumference and can therefore contact a peripheral section 180a, 180b, preferably the inner surface 1 81 of a liquid reservoir 18 with a round cross section.
  • the inlet side 61 of the evaporator 60 makes contact with the central feed section 184b of the wick structure 19.
  • the wick structure 19 in FIG. 6 (b) has a ring shape, ie the wick structure 19 is disk-shaped.
  • the wick structure 19 comprises a centrally arranged feed section 184b and, in this example, an annular wick section 1 91 a, 191 b, which extends through two oppositely arranged webs that cut radially from the feed section 1 84b to the annular wick section 191 a, 191 b. fen, is fluidly connected to the annular wick section 191 a, 1 91 b or storage section 184a.
  • the wick sections 1 91 a, 1 91 b forms a contiguous storage section 1 84 a.
  • the wick structure 19 is thus set up to contact a liquid reservoir 18 in a circumferential section 1 80a, 180b, see the evaporator-tank unit 1 in FIG. 6 (d).
  • the wick structure 19 has a round circumference and can therefore fully contact a circumferential section 180a, 180b, preferably the inner surface 181 of a liquid reservoir 18 with a round cross section.
  • the inlet side 61 of the evaporator 60 contacts the central feed section 184b of the wick structure 19.
  • the wick structure 19 in FIG. 6 (b) has eccentric openings or recesses which form a fold 192 of the wick structure 19.
  • the fold 192 can serve, for example, to fold a carrier 4 and / or to fold the wick structure 19 in the evaporator-tank unit 1.
  • two recesses are provided, and any number can be provided, in particular 1, 3 to 10 recesses can be provided.
  • the recesses have the shape of ring segments and can, for example, also have the shape of slots.
  • the wick structure 19 with the vaporizer 60 according to FIG. 6 (c) includes the wick structure 19 explained with reference to FIG. 6 (b) of the evaporator 60, the wick structure 1 9 is arranged facing away.
  • the wick structure 19 contacts a liquid reservoir 1 8 via at least two spaced-apart circumferential sections 180a, 1 80b if a bone-shaped wick structure 1 9 according to FIG (a) is used.
  • the wick structure 19 can contact the liquid reservoir 18 over the entire circumference in a circumferential section 180a, 180b if an annular wick structure 19 according to FIG. 6 (b) is used.
  • An evaporator 60 makes contact with an inlet side 61 of a feed section 1 84b of the wick structure 1 9.
  • An outlet side 64 of the evaporator 60 faces an air duct 30. The evaporator is held by the carrier 4.
  • Figure 7 shows a perspective view of an evaporator tank unit 1 according to the invention and several embodiments of a wick structure 1 9 according to the invention. From left to right, the figure shows twice a wick structure 19 (a), (b), a wick structure 1 9 with a Carrier 4 (c) and an evaporator-tank unit 1 (d).
  • the wick structures 19 shown in FIGS. 7 (a) and 7 (b) are the wick structures 19 explained with reference to FIGS. 6 (a) and 6 (b) in a different perspective.
  • the wick structure 19 with the carrier 4 shows that the carrier 4 is held in the holder 192 of the wick structure 19.
  • the carrier 4 is designed such that it can be inserted into the openings forming the holder 192 and held there in a non-displaceable manner.
  • the carrier 4 can, for example, have electrical contacts 100 that establish an electrical connection to the evaporator 60 so that the evaporator 60 can be connected to an external one with reference to the evaporator-tank unit 1 Part can be electrically contacted and controlled.
  • FIG. 7 (d) shows the evaporator-tank unit from FIG. 6 (d) in a different perspective.
  • the liquid tank 18 forms the outer part of the evaporator tank unit 1, which can be electrically connected to an external part, for example a base part 16 of an inhaler 10, by means of the electrical contacts 100.
  • FIG. 8 shows a wick structure 19 on the left and a section through an evaporator tank unit 1 according to an embodiment of the invention on the right.
  • the wick structure 19 is partially in the shape of a hollow cylinder with a longitudinal axis and has a radially extending feed section 184b on an end face 1 95.
  • the hollow cylindrical wick structure 19 has a cavity 196 which can geometrically enclose and / or store liquid 50 in the liquid reservoir 18.
  • the hollow cylindrical wick structure 19 can, for example, fully contact a cylindrical liquid tank 18 on a circumferential section 1 80a, 180b corresponding to an inner surface 181 of an outer wall 182 of the liquid reservoir 18.
  • the wick structure 19 can consist entirely of a porous material.
  • the wick structure 19 can be used in egg nen liquid storage 18 and ensures that irrespective of the orientation or the level of liquid 50 is in connection with the wick structure 19.
  • the wick structure 19 advantageously forms the liquid reservoir 18.
  • the wick structure 19 can have a liquid-tight outer wall 182 and thus form the outer wall 182 of the liquid reservoir 18.
  • a further component for storing liquid 50, which is separate from the wick structure 19 and which forms the liquid reservoir 18, can thus be dispensed with.
  • the wick structure 19 can consist of a porous and pressed glass. This allows the pore size and pore distribution to be set exactly.
  • the supply section 184b can have a larger number of pores, each having a smaller volume than the storage section 184a.
  • the storage section 1 84 can also have a pore size gradient, the pore size decreasing starting from the evaporator 60 and / or, for example, the pore size in the hollow cylindrical section of the wick structure 1 9 being constant.
  • the outer wall 1 82 of the wick structure 19 can be sealed to the outside in a liquid-tight manner and produce the liquid reservoir 18 itself.
  • the wick structure 19 is advantageously colored in order, for example, to be able to recognize the fill level of the liquid reservoir 18 and / or to increase the visual quality.
  • the evaporator 60 is aligned with the inlet side 61 and an outlet side 64 perpendicular to the longitudinal axis L.
  • the inlet side 61 and / or the outlet side 64 can also be parallel or at an angle to the longitudinal axis L be aligned.
  • An air duct 30 is provided coaxially around the longitudinal axis L and preferably runs concentrically with the outer wall 182 of the liquid reservoir 18.

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  • Catching Or Destruction (AREA)

Abstract

L'invention concerne une unité vaporisateur-réservoir (1) pour un inhalateur, de préférence un produit de cigarette électronique (10), comprenant au moins un vaporisateur électrique (60) destiné à vaporiser un liquide (50) acheminé au vaporisateur (60), un réservoir de liquide (18) destiné à stocker le liquide (50), et une structure de mèche capillaire (19). Le liquide (50) peut être transporté par des forces capillaires du réservoir de liquide (18) vers un côté d'entrée (61) du vaporisateur (60). La structure de mèche (19) est en une seule pièce et entre en contact avec et/ou forme le réservoir de liquide (18) sur au moins une portion périphérique (180a, 180b).
EP20705326.5A 2019-02-15 2020-02-11 Unité vaporisateur-réservoir pour un inhalateur, de préférence un produit de cigarette électronique, produit de cigarette électronique et structure de mèche Active EP3923752B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019202046.1A DE102019202046A1 (de) 2019-02-15 2019-02-15 Verdampfer-Tank-Einheit für einen Inhalator, vorzugsweise, ein elektronisches Zigarettenprodukt, elektronisches Zigarettenprodukt und Dochtstruktur
PCT/EP2020/053404 WO2020165131A1 (fr) 2019-02-15 2020-02-11 Unité vaporisateur-réservoir pour un inhalateur, de préférence un produit de cigarette électronique, produit de cigarette électronique et structure de mèche

Publications (2)

Publication Number Publication Date
EP3923752A1 true EP3923752A1 (fr) 2021-12-22
EP3923752B1 EP3923752B1 (fr) 2023-07-12

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EP20705326.5A Active EP3923752B1 (fr) 2019-02-15 2020-02-11 Unité vaporisateur-réservoir pour un inhalateur, de préférence un produit de cigarette électronique, produit de cigarette électronique et structure de mèche

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US (1) US20220117302A1 (fr)
EP (1) EP3923752B1 (fr)
CN (1) CN113395911A (fr)
DE (1) DE102019202046A1 (fr)
WO (1) WO2020165131A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN112385898A (zh) * 2019-08-13 2021-02-23 彭晓峰 一种新型的雾化芯
EP4205580A4 (fr) * 2020-08-27 2023-10-11 Shenzhen Smoore Technology Limited Dispositif électronique d'atomisation
CN113173782A (zh) * 2021-04-23 2021-07-27 深圳市基克纳科技有限公司 一种组合物及含有梯度分布微孔的多孔陶瓷雾化芯

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US6585509B2 (en) 1995-05-10 2003-07-01 Allports Llc International Vaporization and pressurization of liquid in a porous material
US7726320B2 (en) 2006-10-18 2010-06-01 R. J. Reynolds Tobacco Company Tobacco-containing smoking article
US8757147B2 (en) * 2010-05-15 2014-06-24 Minusa Holdings Llc Personal vaporizing inhaler with internal light source
US8528569B1 (en) * 2011-06-28 2013-09-10 Kyle D. Newton Electronic cigarette with liquid reservoir
US10172387B2 (en) 2013-08-28 2019-01-08 Rai Strategic Holdings, Inc. Carbon conductive substrate for electronic smoking article
US20150230522A1 (en) 2014-02-18 2015-08-20 Jeffrey L. Horn Self-Powered Electronic Vaporizer
EP3171721B1 (fr) 2014-07-24 2021-03-31 Altria Client Services LLC Dispositif de vapotage électronique et éléments associés
EP3193643B2 (fr) 2014-09-17 2023-10-18 Fontem Holdings 4 B.V. Dispositif de stocker et de vaporiser d'un produit liquide
AR103016A1 (es) 2014-12-15 2017-04-12 Philip Morris Products Sa Sistemas generadores de aerosol y métodos para dirigir un flujo de aire hacia dentro de un sistema generador de aerosol calentado eléctricamente
US20170105455A1 (en) 2015-04-22 2017-04-20 Joyetech Europe Holding Gmbh Atomizer and aerosol generating device thereof
US10194694B2 (en) * 2016-01-05 2019-02-05 Rai Strategic Holdings, Inc. Aerosol delivery device with improved fluid transport
US10463076B2 (en) 2016-04-11 2019-11-05 Altria Client Services Llc Electronic vaping device
EP3471807B1 (fr) * 2016-06-20 2020-07-01 Philip Morris Products S.a.s. Ensemble de vaporisateur pour système de génération d'aérosol
US10602775B2 (en) 2016-07-21 2020-03-31 Rai Strategic Holdings, Inc. Aerosol delivery device with a unitary reservoir and liquid transport element comprising a porous monolith and related method
DE102016120803A1 (de) 2016-11-01 2018-05-03 Hauni Maschinenbau Gmbh Verdampfereinheit für einen Inhalator und Verfahren zum Steuern einer Verdampfereinheit
US11129413B2 (en) 2017-03-13 2021-09-28 Altria Client Services Llc Three-piece electronic vaping device with planar heater
DE102017111119B4 (de) 2017-05-22 2020-12-31 Hauni Maschinenbau Gmbh Verdampfereinheit für einen Inhalator
DE102017111435B4 (de) 2017-05-24 2018-12-06 Hauni Maschinenbau Gmbh Verdampfereinheit für einen Inhalator und Verfahren zum Steuern einer Verdampfereinheit

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EP3923752B1 (fr) 2023-07-12
CN113395911A (zh) 2021-09-14
US20220117302A1 (en) 2022-04-21
WO2020165131A1 (fr) 2020-08-20
DE102019202046A1 (de) 2020-08-20

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