WO2022194917A1 - Céramique pour un dispositif d'évaporation - Google Patents

Céramique pour un dispositif d'évaporation Download PDF

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Publication number
WO2022194917A1
WO2022194917A1 PCT/EP2022/056791 EP2022056791W WO2022194917A1 WO 2022194917 A1 WO2022194917 A1 WO 2022194917A1 EP 2022056791 W EP2022056791 W EP 2022056791W WO 2022194917 A1 WO2022194917 A1 WO 2022194917A1
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WO
WIPO (PCT)
Prior art keywords
ceramic
evaporator
liquid
evaporator device
blocking conductor
Prior art date
Application number
PCT/EP2022/056791
Other languages
German (de)
English (en)
Inventor
André GEILEN
Simon GEISS
Ralf Martin Rieß
Original Assignee
Alveon 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 Alveon GmbH filed Critical Alveon GmbH
Publication of WO2022194917A1 publication Critical patent/WO2022194917A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/06—Inhaling appliances shaped like cigars, cigarettes or pipes
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0211—Ceramics
    • 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
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0233—Conductive materials, e.g. antistatic coatings for spark prevention
    • 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
    • A61M2205/27—General characteristics of the apparatus preventing use
    • A61M2205/276—General characteristics of the apparatus preventing use preventing unwanted use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling
    • A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8206—Internal energy supply devices battery-operated

Definitions

  • the present invention relates to a ceramic for accommodating a liquid to be evaporated in an evaporator device.
  • the invention also relates to an evaporator device with such a ceramic.
  • An evaporator device is generally used for evaporating a liquid and is usually used in inhalers.
  • Such an evaporator device usually has a wick for receiving the liquid to be evaporated and a felt wire which is connected to the wick in a heat-transferring manner and generates heat when supplied with electricity in order to evaporate the liquid held in the wick.
  • DE 102018 119566 A1 discloses an evaporator device with an evaporator made of an electrically conductive porous element, which is used at the same time to store the liquid and to flow for the purpose of evaporating the liquid in order to prevent the formation of so-called dry hits, i.e. local , to avoid excessive heating, which can lead to the destruction of the wick.
  • DE 102016 120803 A1 discloses an evaporator device with an evaporator consisting of a doped and electrically conductive evaporator ceramic.
  • the evaporator ceramic is provided with microchannels that are regulated and have a predetermined orientation, through which liquid is conducted for the purpose of evaporation. When supplied with electricity, the evaporator ceramic generates heat in order to evaporate the liquid contained therein.
  • the evaporator device also has a flow control device, which controls the flow of the liquid through the microchannels in order to achieve metering of the liquid to be evaporated.
  • DE 102017 123868 A1 discloses an evaporator device which, like the evaporator device known from DE 102016 120803 A1, has an evaporator ceramic with parallel microchannels for storing and evaporating the liquid.
  • a wick structure is additionally provided in the inlet area and is connected to the inlet side in a surface-contacting manner.
  • a disadvantage of the solutions known from the prior art is that the liquid to be evaporated is subject to narrow limits in terms of its nature in order to be able to store the liquid in the ceramic without draining the liquid. This results in a limited selection of possible liquids that can be used and consequently limited possible uses of the associated evaporator device and/or the associated inhaler.
  • the present invention is therefore concerned with the task of specifying improved or at least different embodiments for a ceramic for receiving a liquid to be evaporated in an evaporator device and for an evaporator device for evaporating a liquid, which are characterized in particular by more variable possible uses and/or a simplified implementation .
  • the present invention is based on the general idea of using pores in a ceramic to hold a liquid to be evaporated, the pores having an average size of between 0.05 ⁇ m and 50 ⁇ m.
  • the mean sizes of the pores lead to such a relationship between the Surface and the volume of the respective pores that these have capillary forces, which compensate for the gravitational and / or pressure-related forces acting on a recorded in the volume drop-shaped particle of a liquid, preferably outweigh.
  • the result of this is that the droplet-shaped particles, also referred to below as droplets, remain in the pores. Consequently, the outflow of the droplets and consequently of the liquid from the ceramic is prevented or at least considerably reduced. This means that even low-viscosity liquids can be absorbed and stored in the ceramic.
  • the ceramic can absorb and store a greater variability of liquids of different viscosities without the liquids flowing out of the ceramic.
  • the liquids can be provided more cost-effectively and in a wider range.
  • active ingredients taken up in the liquids can thus be simplified and/or provided with a more precise dose.
  • the ceramic and the associated evaporator device can also be used for a controllable inhalation of said active ingredients and thus a controllable and/or predetermined dosing of the active ingredients.
  • the capillary forces described above also lead to the ceramic being saturated with the liquid in the event of a hydraulic connection to the liquid to be evaporated without any further action, such as for example actively pumping the liquid into the ceramic.
  • the ceramic is used to hold a liquid, in particular a low-viscosity liquid, and is used in an evaporator device.
  • the evaporator device serves to evaporate the liquid contained in the ceramic.
  • the liquid vaporized with the vaporizer device is preferably used for inhalation.
  • the ceramic For receiving the liquid to be evaporated, the ceramic has a receiving structure consisting of pores in the ceramic, which is also referred to below as a pore structure.
  • the pore structure has an average pore size of between 0.05 ⁇ m and 50 ⁇ m.
  • a further advantage of the idea according to the invention can be seen in the fact that the mean sizes of the pore structure according to the invention lead to an increase in the area of the droplets that is in contact with the ceramic. In other words, an increased area of the ceramic transfers heat to the droplets to vaporize the liquid. This leads to a more even vaporization of the liquid and thus improved control over the vaporization. In addition, the liquid evaporates more quickly in this way.
  • mean pore size is to be understood in particular as meaning the ratio between four times the volume and the area of the pores, ie 4V/A, as specified in particular in the ISO 15901 standard.
  • the pores of the ceramic are expediently formed during the firing of the ceramic, which can take place, for example, by means of sintering.
  • the pores for receiving the liquid are advantageously not introduced separately, in particular not subsequently, into the ceramic.
  • an intrinsic property of the ceramic given by the open position, is used to store the liquid to be evaporated. This leads to a simple and inexpensive preparation of the ceramic.
  • Different mean Pore sizes can be achieved through different components and/or by means of an adapted production of the ceramic.
  • the ceramic is used in particular to hold low-viscosity liquids.
  • Low-viscosity liquids are to be understood in particular as liquids which have a viscosity of 45 mPas and less.
  • the liquid can be any liquid.
  • the advantages according to the invention can be increased in that the pore sizes of the pores of the pore structure are at least largely within the mean pore size. This means in particular that a maximum of 10% of the pores have pore sizes that are larger than four times the average pore size. This means that pores with pore sizes above the mean pore size are reduced, preferably not present. As a result, the effects of pores with pore sizes above the mean pore size on the overall behavior of the ceramic, and consequently the effects of larger volume droplets in these pores on the overall behavior of the liquid imbibed in the ceramic, are negligible or at least reduced. In this way, it is possible in particular to prevent the liquid from flowing out of the ceramic.
  • the droplets taken up in the pores have essentially the same volume, corresponding to the size distribution of the pores.
  • the liquid can be evaporated in a more homogeneous and/or controlled manner in this way.
  • the average pore size is between 0.1 gm and 25 gm, preferably between 0.15 gm and 10 gm, particularly preferably between 0.2 gm and 5 gm.
  • the ceramic is used in addition to receiving the liquid to generate heat for evaporating the liquid.
  • the ceramic has an integrated heating function for heating and thus evaporating the liquid.
  • the ceramic is preferably an electrically conductive ceramic, which is also referred to below as an evaporator ceramic.
  • the evaporator ceramic During operation with an electrical supply, the evaporator ceramic generates homogeneous heat for evaporating the liquid contained in the pore structure by means of its electrical conductivity.
  • the evaporator ceramic is a heating resistor. In this way, in particular, losses during the heat transfer to the liquid are avoided or at least reduced and at the same time a uniform heat transfer to the liquid is achieved. As a result, the liquid can be evaporated in a more controlled manner.
  • the evaporator ceramic can be an electrically conductive ceramic of any type, as long as it has the pore structure and generates heat homogeneously in a predetermined area when there is an electrical supply, in particular when an electrical voltage is applied. It is conceivable that the evaporator ceramic is electrically conductive per se.
  • Ceramics made of metal oxides such as titanium oxides, or metal carbides and silicon carbides.
  • composite ceramics can be used which have electrically conductive and electrically non-conductive networks of different materials, with the conductive networks expediently being homogeneously distributed in the ceramic.
  • Such composite ceramics are those with metal oxides of different oxidation states.
  • Mixed oxide ceramics can also be used, which are produced by mixing different starting materials, with a new material being created by chemical reactions during the production of the ceramic, typically during sintering. Examples of the starting materials are different metal oxides.
  • doped ceramics can be used, which become electrically conductive through doping.
  • any combination of the ceramics mentioned can also be used, provided the evaporator ceramic is an electrically conductive ceramic with the receiving structure, which generates heat homogeneously during operation.
  • the evaporator device has two electrical connections for the electrical supply of the evaporator device.
  • the evaporator device can have a heater separate from the ceramic, in particular an electric heater, which generates heat during operation when electrically supplied and transfers it to the ceramic in order to evaporate the liquid contained in the pore structure.
  • the ceramic is also conceivable to design the ceramic as an evaporator ceramic.
  • the evaporator ceramic is electrically supplied during operation by means of the connections.
  • a path of the electrical current also referred to below as the current path, runs through the connections and through the evaporator ceramic.
  • a separate heater for generating heat for the purpose of evaporating the liquid can be dispensed with.
  • the evaporator device can thus be implemented in a simplified manner.
  • the ceramic in particular the evaporator ceramic, is designed for operation in a thermal operating range that is limited by a lower initial operating temperature and an upper final operating temperature.
  • the evaporator device for evaporating the liquid, the evaporator device, in particular the evaporator ceramic, generates heat in the operating range and thus between the initial operating temperature and the final operating temperature when electrically supplied.
  • the temperature can be monitored by means of a corresponding sensor system, which is expediently connected in a communicating manner to a control device.
  • Embodiments are considered to be advantageous in which the evaporator device has an electrical conductor, which is also referred to below as a blocking conductor.
  • the blocking conductor is arranged in the current path so that the electric current flows through the blocking conductor during operation.
  • the blocking conductor is connected to the ceramic, in particular the evaporator ceramic, in a heat-transferring manner.
  • the blocking conductor is designed in such a way that it has a suddenly increasing electrical resistance at the final operating temperature. Due to the heat-transferring connection of the blocking conductor to the ceramic, when the final operating temperature is reached, there is a sudden increase in the electrical resistance in the current path and thus an interruption or at least a significant reduction in the electrical supply of the evaporator device, in particular the evaporator ceramic.
  • the final operating temperature is at least essentially influenced, preferably determined, by means of the blocking conductor.
  • the final operating temperature is thus specified and determined without additional sensors.
  • the ceramic therefore has a temperature between the initial operating temperature and the final operating temperature.
  • the amount of liquid evaporated can thus be controlled in a simple and reliable manner over the duration of the electrical supply to the evaporator. In particular, it is possible in this way to achieve complete evaporation of all of the liquid contained in the ceramic over a predetermined duration of the electrical supply of the evaporator.
  • the heat-transferring connection of the blocking conductor to the ceramic is advantageously such that the temperature of the blocking conductor corresponds at least essentially to the temperature of the ceramic, in particular the evaporator ceramic.
  • the evaporator device can have a single blocking conductor.
  • the evaporator device with two or more such blocking conductors. It is preferred here if the blocking conductors are identical. In the present case, a sudden increase in the electrical resistance when the final operating temperature is exceeded is to be understood as meaning an increase that exceeds a linear increase.
  • At least one of the at least one blocking conductor shows a potential increase in the electrical resistance when the final operating temperature is exceeded.
  • at least one of the at least one blocking conductor is designed in such a way that its electrical resistance begins to increase exponentially when the final operating temperature is exceeded.
  • Embodiments have proven to be advantageous in which the electrical resistance of at least one of the at least one blocking conductor, advantageously of the respective blocking conductor, increases by at least one power of ten in the 50° C. following the final operating temperature. In this way, the evaporation parameters can be controlled particularly easily and effectively.
  • Embodiments are considered advantageous in which at least one of the at least one blocking conductor, advantageously the respective blocking conductor, is configured as a PTC thermistor, with the final operating temperature lying between an initial temperature and an end temperature of the at least one PTC thermistor.
  • PTC thermistors have a characteristic current curve, with the electrical resistance suddenly increasing by several powers of ten from the initial temperature onwards. What is achieved in this way is that the blocking conductor does not affect the electrical resistance of the entire evaporator device, also referred to below as the overall resistance, up to the initial temperature or as little as possible, and that the blocking conductor only has an effect that increases the overall resistance when the initial temperature is reached.
  • the total resistance is in this way until reaching the final operating temperature of the ceramic and possibly the heater, in particular of the evaporator ceramic, and when the End operating temperature dominated by the at least one blocking conductor.
  • operation in the thermal operating range can take place with reduced energy consumption and thus increased efficiency.
  • the final operating temperature is reached, there is a precisely defined and reliable interruption or at least a reduction in the electrical supply.
  • the final operating temperature can be anywhere between the initial temperature and the final temperature, advantageously between the initial temperature and the nominal temperature, of the PTC thermistor.
  • the final operating temperature corresponds to the initial temperature of the PTC thermistor. In this way, it is achieved in particular that no increased expenditure of energy, in particular no increased power consumption, is necessary to reach the final operating temperature. This leads to an increased efficiency of the evaporator device.
  • the evaporator device can be operated in this way with batteries, in particular rechargeable batteries, easily and with an increased service life. Furthermore, this leads to the blocking conductor generating no heat, or as little heat as possible, in the operating range. This results in improved control over the evaporation parameters.
  • the respective at least one blocking conductor can be arranged anywhere in the current path, provided that it is connected to the ceramic, in particular the evaporator ceramic, in a heat-transferring manner.
  • the heat-transferring connection between the respective blocking conductor and the ceramic, in particular the evaporator ceramic can be configured as desired.
  • Embodiments are preferred in which at least one of the at least one blocking conductor, advantageously the respective blocking conductor, lies flat on the ceramic.
  • one of the at least one blocking conductor can lie directly flat on the ceramic.
  • the ceramic in particular the evaporator ceramic, is advantageously formed in one piece and coherently. It is preferred here if a blocking conductor is arranged on at least one outside of the ceramic. Thus, a compact and simple manufacture and construction of the evaporator device is possible.
  • the ceramic can therefore have two ceramic bodies that are separate from one another.
  • a blocking conductor can be arranged between at least two of the at least two ceramic bodies.
  • the respective at least one blocking conductor can in principle be made from any desired material or material, provided that it has a suddenly increasing electrical resistance when the final operating temperature is exceeded.
  • at least one of the at least one blocking conductor is ceramic.
  • the at least one blocking conductor is expediently dimensioned in such a way that it accounts for a smaller proportion in terms of volume compared to the ceramic. This allows in particular a more compact design of the evaporator device.
  • Embodiments are preferred in which at least one of the at least one blocking conductor is designed as a layer.
  • the at least one blocking conductor has a significantly reduced volume compared to the ceramic.
  • the respective position can have any configuration.
  • at least one of the at least one layer can be designed as a foil, a coating and the like.
  • the total electrical resistance of the evaporator device in the thermal operating range is dominated by the ceramic and possibly the heater, in particular by the evaporator ceramic, and above the operating range, i.e. when the final operating temperature is exceeded, by the blocking conductor.
  • the electrical resistance of the blocking conductor in the operating range corresponds at most to half the electrical resistance of the ceramic, in particular the evaporator ceramic.
  • the electrical resistance of the at least one blocking conductor is composed in particular of the specific resistance and the volume or distance along the current path. Accordingly, a reduction in the electrical resistance of the blocking conductor in the operating range be achieved by reducing the relative volume of the blocking conductor in the evaporator device.
  • the ceramic in particular the evaporator ceramic, preferably has an electrical resistance which increases slightly up to the final operating temperature, in particular in comparison to the increase in the resistance of the blocking conductor from the final operating temperature.
  • the electrical resistance of the ceramic, in particular the evaporator ceramic preferably has a temperature-dependent profile in the operating range such that the resistance increases with temperature by a maximum of one power of ten.
  • the evaporator device is advantageously used in an inhaler which, during operation, generates vapor for inhalation by means of the evaporator device.
  • the inhaler is preferably a mobile and hand-portable inhaler, which can therefore be carried along.
  • the inhaler can preferably be gripped and carried by hand by a user.
  • the inhaler and the vaporizer device are designed accordingly with regard to their dimensions and their weight.
  • the inhaler preferably has a battery, preferably a rechargeable battery, for the electrical supply.
  • the control device is expediently designed in such a way that it supplies the evaporator device with electricity during operation for evaporating the liquid contained in the pore structure.
  • the inhaler can also have a liquid container for storing the liquid to be evaporated, for example a cartridge, which is fluidically connected or can be connected to the ceramic for refilling the pore structure with the liquid.
  • a liquid container for storing the liquid to be evaporated for example a cartridge, which is fluidically connected or can be connected to the ceramic for refilling the pore structure with the liquid.
  • the evaporator device in particular the inhaler, can be operated either continuously or discontinuously. The evaporator device is designed accordingly.
  • the ceramic is continuously supplied with liquid for at least a limited period of time and this liquid is at least partially evaporated.
  • the supply of the liquid can be implemented by means of a permanent fluidic connection between the ceramic and a liquid container in which the liquid is stored, so that liquid flows continuously into the ceramic.
  • the evaporation takes place as long as the evaporator device is supplied with electricity and generates heat for evaporating the liquid contained in the pore structure.
  • the amount of liquid evaporated can be monitored over the operating time of the evaporator device, if required.
  • the ceramic is supplied with a predetermined dose of the liquid, which is then vaporized.
  • the ceramic is not continuously supplied with the liquid.
  • the evaporated quantity can thus be controlled in particular via the volume of the liquid held in the ceramic.
  • liquid can be supplied to the ceramic after the liquid previously contained in the ceramic has at least partially evaporated and/or the evaporator device is not being operated in the operating range, in particular is not in operation.
  • the ceramic can thus be refillable.
  • the ceramic in particular the evaporator device
  • a dose of the liquid which is evaporated during operation can be stored in the case of discontinuous operation.
  • the pottery, especially the Evaporator device can be designed for single use.
  • the ceramic that absorbs the liquid, in particular the evaporator device can be designed in the manner of a tablet.
  • Fig. 2 is an isometric view of an evaporator device with the
  • FIG. 3 shows a highly simplified representation of an inhaler with the evaporator device in the manner of a circuit diagram.
  • a ceramic 4 as shown in FIGS. 1 to 3 is usually used in an evaporator device 1 as shown in FIGS is.
  • the evaporator device 1 can be a component of an inhaler 2, as is shown, for example, in FIG. 3 in a greatly simplified manner and in the form of a circuit diagram.
  • the evaporator device 1 vaporizes a liquid 22 (see FIG. 3) and thus generates vapor 3 (see FIG. 3), which is made available, for example, to a user (not shown) for inhalation.
  • the evaporator device 1 serves in particular to evaporate a predetermined dose of the liquid 22.
  • the liquid 22 is, for example, one which contains a medical active substance, so that a vapor 3 (see FIG. 2) containing the active substance is emitted during evaporation. inhaled by a user.
  • the inhaler 2 is a mobile and hand-portable inhaler 2 which, when in use, is gripped by hand by a user (not shown) and is portable.
  • the inhaler 2 and the vaporizer device 1 are designed accordingly with regard to their dimensions and their weight.
  • the ceramic 4 serves to receive and store the liquid 22 to be evaporated.
  • the pores 23 are only indicated in the enlarged view of FIG.
  • the pore structure 7 has an average pore size between 0.05 ⁇ m and 50 ⁇ m, advantageously between 0.1 ⁇ m and 25 ⁇ m, preferably between 0.15 ⁇ m and 10 ⁇ m, particularly preferably between 0.2 ⁇ m and 5 ⁇ m.
  • capillary forces act in the pores 23 which exceed the gravitational forces of the droplets (not shown) of the liquid 22 received in the pores 23 .
  • the liquid 22 remains in the pore structure 7 and therefore does not flow off.
  • the pore structure 7 is saturated by the capillary forces with the liquid 22 to be evaporated when the pore structure 7 is in fluid communication with the liquid 22.
  • liquids 22 with low viscosities, ie low-viscosity liquids 22, can also be accommodated in the pore structure 7, with the liquid 22 being prevented or at least considerably reduced from flowing out of the pore structure 7.
  • a maximum of 10% of the pores preferably have pore sizes that are more than four times the average pore size.
  • the ceramic 4 is an electrically conductive evaporator ceramic 6 which, by means of its electrical conductivity, when electrically supplied, generates homogeneous heat for evaporating the liquid 22 contained in the pore structure 7 .
  • the evaporator ceramic 6 is therefore a heating resistor.
  • the absorption and generation of heat for evaporating the liquid 22 are both implemented in the ceramic 4 .
  • the evaporator ceramic 6 can contain at least one metal oxide.
  • the evaporator ceramic 6 is operated in a thermal range, which is also referred to below as the operating range.
  • the operating range is limited by a low temperature, also referred to below as the initial operating temperature, and by a high temperature, also referred to below as the final operating temperature. This means that the evaporation of the liquid to be evaporated and absorbed in the pores takes place in the operating range and thus between the initial operating temperature and the final operating temperature.
  • the evaporator device 1 has two electrical connections 5 in addition to the ceramic 4 electrical supply evaporator device 1, in the examples shown, the evaporator ceramic 6 on.
  • the evaporator ceramic 6 is supplied with electricity by means of the connections 5, so that a path 8 of the electric current, indicated in FIG.
  • the evaporator ceramic 6 uses its electrical resistance to generate heat for evaporating the liquid 22 contained in the pore structure 7.
  • At least one blocking conductor 9 is arranged in this path 8, also referred to below as the current path 8, in such a way that the current path 8 necessarily leads through the blocking conductor 9. In the exemplary embodiments shown, this is achieved in that the at least one blocking conductor 9 is arranged between the connections 5 .
  • the at least one blocking conductor 9 is connected to the evaporator ceramic 6 in a heat-transferring manner.
  • the heat-transferring connection of the at least one blocking conductor 9 to the evaporator ceramic 6 is realized by a planar arrangement of the blocking conductor 9 on the evaporator ceramic 6 .
  • the blocking conductor 9 is in direct contact with the evaporator ceramic 6 .
  • the temperature of the at least one blocking conductor 9 thus corresponds to the temperature of the evaporator ceramic 6.
  • the at least one blocking conductor 9 is designed in such a way that it has a rapidly increasing electrical resistance when the final operating temperature is exceeded. Below the final operating temperature, the at least one blocking conductor 9 is therefore electrically conductive, so that the evaporator ceramic 6 is operated in the operating range when electrically supplied, ie temperatures up to the final operating temperature are reached.
  • the abrupt increase in the electrical resistance of the at least one blocking conductor 9 means that the electrical current flowing through the evaporator ceramic 6 is interrupted when the final operating temperature is exceeded or is significantly reduced, so that the sudden increase in the electrical resistance of the at least one blocking conductor 9 defines or at least dominates the final operating temperature.
  • the evaporator device 1 It is thus possible to operate the evaporator device 1 with controlled evaporation parameters. In particular, this makes it possible to vaporize a predetermined quantity of the liquid 22 to be evaporated and thus a predetermined dose of the liquid 22 .
  • Separate control electronics (not shown) and/or separate sensors (not shown), for example for determining the temperature of the evaporator ceramic 6, are not necessary for this purpose.
  • the evaporator ceramic 6 can be operated in this way without separate control technology with such a high power that the operating range is reached more quickly, but without the blocking conductor 9 the evaporator ceramic 6 and thus the evaporator device 1 would overheat and thus be damaged .
  • the electrical connections 5 are each designed as a printed circuit board 10, for example made of a metal or a metal alloy.
  • the evaporator ceramic 6 is arranged between the connections 5 .
  • the evaporator ceramic 6 and the at least one blocking conductor 9 form a coherent module 11 which is arranged between the connections 5 .
  • the evaporator ceramic 6 and the module 11 have a cuboid design, purely by way of example.
  • a ring-shaped design of the ceramic 4 (not shown) is also conceivable.
  • a volume proportion of the evaporator ceramic 6 in the total volume of the module 11 is considerably larger than a volume proportion of the at least one blocking conductor 9.
  • the at least one blocking conductor 9 plays a negligible role in the overall electrical resistance of the module 11 in the operating range.
  • the total electrical resistance of the module 11, in particular of the evaporator device 1 is dominated by the evaporator ceramic 6 in the operating range, whereas it is dominated by the at least one blocking conductor 9 above the operating range.
  • the respective blocking conductor 9 is designed as a thin layer 13 compared to the evaporator ceramic 6 and can therefore also be referred to as a blocking layer 14 .
  • the respective blocking conductor 9 is preferably a PTC thermistor 15, which from an initial temperature has an abrupt electrical resistance that increases by several powers of ten.
  • the final operating temperature advantageously corresponds to a temperature between the initial temperature and an end temperature of the PTC thermistor 15, in particular the initial temperature of the PTC thermistor 15.
  • the PTC thermistor 15 is a ceramic 16 that differs from the evaporator ceramic 6 and is also referred to below as a blocking ceramic 16 . Due to the lower barrier volume of the barrier ceramic 16 in comparison to the evaporator volume of the evaporator ceramic 6, the total capacity of the module 11 is determined or at least dominated by the evaporator ceramic 6. As can be seen from FIG. 3, the evaporator device 1 is accommodated in a housing 17 of the inhaler 2 which has an outlet opening 18 for letting out the vapor 3 generated by the evaporator device 1 .
  • the inhaler 2 of the exemplary embodiment shown also has a preferably refillable or replaceable container 19 for storing the liquid to be vaporized, which, as indicated by a dashed line, is fluidically connected or connectable to the ceramic 4, in particular the evaporator ceramic 6.
  • the evaporator device 1 and the container 19 can form a unit which is accommodated in the inhaler 2 in an exchangeable manner.
  • the container 19 is permanently accommodated in the inhaler 2 and can be refilled.
  • the evaporator device 1 can also be accommodated permanently in the inhaler 2 .
  • the container 19 it is possible for the container 19 to be exchangeable.
  • the evaporator device 1 can also be accommodated permanently in the inhaler 2 .
  • the inhaler 2 also has a rechargeable battery 20 for the electrical supply of the evaporator device 1 and a control device 21 which is electrically connected to the evaporator device 1 .
  • the control device 21 is connected to the battery 20 in such a way that it can establish and interrupt the electrical connection of the battery 20 to the evaporator device 1 for the purpose of supplying electricity to the evaporator device 1 , in particular to the evaporator ceramic 6 .
  • the Evaporator device 1 in this case has a heater 12 that is separate from the ceramic 4 and, when electrically supplied, generates heat for evaporating the liquid 22 contained in the pore structure 7 .
  • the heater 2 is connected to the ceramic 4 in a heat-transferring manner.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

L'invention concerne une céramique (4) pour un dispositif d'évaporation (1) pour l'évaporation d'un liquide (22), en particulier d'un liquide à faible viscosité. Des possibilités d'application variables ainsi qu'une mise en oeuvre simplifiée de la céramique (4) et le dispositif d'évaporation (1) sont réalisés dû au fait que la céramique (4) a une structure de pores (7) constituée de pores (23) de la céramique (4) ayant une grosseur de pores moyenne comprise entre 0,05 µm et 50 µm afin d'absorber le liquide (22) à évaporer. L'invention concerne en outre un dispositif d'évaporation (1) comprenant une telle céramique (4).
PCT/EP2022/056791 2021-03-16 2022-03-16 Céramique pour un dispositif d'évaporation WO2022194917A1 (fr)

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DE102021202549.8A DE102021202549A1 (de) 2021-03-16 2021-03-16 Keramik für eine Verdampfereinrichtung

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EP3771354B1 (fr) 2019-08-02 2021-11-24 Shenzhen Smoore Technology Limited Composant poreux et cigarette électronique le comprenant

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WO2015117705A2 (fr) * 2014-02-10 2015-08-13 Philip Morris Products S.A. Cartouche pour un système de génération d'aérosol
US20150359262A1 (en) * 2014-06-16 2015-12-17 Shenzhen Smoore Technology Limited Preparation method of porous ceramic, porous ceramic, and electronic cigarette
US20160316819A1 (en) * 2015-04-30 2016-11-03 Shenzhen Smoore Technology Limited Porous ceramic material, manufacturing method and use thereof
EP3158882A2 (fr) * 2015-10-22 2017-04-26 Shenzhen Smoore Technology Limited Cigarette électronique et ensemble d'atomisation et son élément d'atomisation
US20180020722A1 (en) * 2016-07-21 2018-01-25 Rai Strategic Holdings, Inc. Aerosol delivery device with a liquid transport element comprising a porous monolith and related method
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DE102017123869A1 (de) * 2017-10-13 2019-04-18 Hauni Maschinenbau Gmbh Flüssigkeitsspeicher für einen Inhalator, insbesondere für ein elektronisches Zigarettenprodukt
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