WO2024109531A1 - Dispositif de génération d'aérosol, dispositif de chauffage pour dispositif de génération d'aérosol et procédé de préparation - Google Patents

Dispositif de génération d'aérosol, dispositif de chauffage pour dispositif de génération d'aérosol et procédé de préparation Download PDF

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Publication number
WO2024109531A1
WO2024109531A1 PCT/CN2023/129985 CN2023129985W WO2024109531A1 WO 2024109531 A1 WO2024109531 A1 WO 2024109531A1 CN 2023129985 W CN2023129985 W CN 2023129985W WO 2024109531 A1 WO2024109531 A1 WO 2024109531A1
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WO
WIPO (PCT)
Prior art keywords
substrate
aerosol generating
generating device
heating element
electrode
Prior art date
Application number
PCT/CN2023/129985
Other languages
English (en)
Chinese (zh)
Inventor
陈桂敏
戚祖强
罗家懋
雷宝灵
徐中立
李永海
Original Assignee
深圳市合元科技有限公司
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
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Application filed by 深圳市合元科技有限公司 filed Critical 深圳市合元科技有限公司
Publication of WO2024109531A1 publication Critical patent/WO2024109531A1/fr

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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
    • A24F40/10—Devices using liquid 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
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • 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
    • A24F40/46—Shape or structure of electric heating means
    • 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
    • A24F40/46—Shape or structure of electric heating means
    • A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • A24F40/51—Arrangement of sensors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • A24F40/57—Temperature control
    • 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
    • A24F40/70—Manufacture
    • 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
    • A24F40/90—Arrangements or methods specially adapted for charging batteries thereof

Definitions

  • the embodiments of the present invention relate to the technical field of heat-not-burn aerosol generation, and in particular to an aerosol generating device, a heater for the aerosol generating device, and a preparation method thereof.
  • Smoking articles eg, cigarettes, cigars, etc.
  • People have attempted to replace these tobacco-burning articles by creating products that release compounds without combustion.
  • a heating device that releases a compound by heating rather than burning a material.
  • the material may be an aerosol-generating article containing tobacco or other non-tobacco products, which may or may not contain nicotine.
  • a known heating device uses a ceramic-based heater to heat the tobacco or other non-tobacco product; wherein the ceramic-based heater is prepared by printing a resistive heating track on a ceramic tube as a substrate.
  • One embodiment of the present application provides an aerosol generating device, which is configured to heat an aerosol generating article to generate an aerosol; comprising:
  • an electrically insulating substrate configured to be tubular surrounding or defining the chamber
  • heating element bonded to the substrate and surrounding at least a portion of the substrate
  • the substrate and the heating element are thermally conductive to each other; in use, the substrate can generate heat by receiving heat from the heating element, thereby heating the aerosol generating article;
  • the substrate includes at least one of ceramic, glass and quartz, and the tube wall thickness of the substrate is less than 0.2 mm.
  • the substrate does not include a single element of metal.
  • the wall thickness of the substrate is between 0.1 mm and 0.2 mm.
  • the substrate is formed by grinding a tubular precursor on a grinding machine to reduce the wall thickness of the tube.
  • the substrate is tested according to a three-point bending strength test method, and the bending strength of all test sites of the substrate is greater than 40N.
  • the heating element includes a heating layer formed or bonded to a substrate.
  • the heating layer is configured in a ring shape surrounding the substrate.
  • the substrate includes a first end and a second end that are opposed to each other in a longitudinal direction;
  • a first electrode coupled to the substrate and arranged close to the first end
  • a second electrode coupled to the substrate and arranged close to the second end
  • the heating layer is configured to extend between the first electrode and the second electrode, and the first electrode and the second electrode guide current in a longitudinal direction of the heating layer.
  • the resistance of the heating layer is between 0.5 ⁇ and 3 ⁇ .
  • the substrate when the heating element is heated at a power supply of 30 W, the substrate is configured to be heated from room temperature to 320° C. within 30 seconds.
  • Another embodiment of the present application further provides a heater for an aerosol generating device, comprising:
  • an electrically insulating substrate configured to be tubular
  • heating element bonded to the substrate and surrounding at least a portion of the substrate
  • the substrate and the heating element are thermally conductive to each other; in use, the substrate can generate heat by receiving heat from the heating element; the substrate comprises at least one of ceramic, glass, and quartz, and has a tube wall thickness of less than 0.2 mm.
  • Another embodiment of the present application further provides a heater for an aerosol generating device, comprising:
  • an infrared emitting coating formed on the quartz tube and surrounding at least a portion of the quartz tube for radiating infrared rays into the tubular hollow of the quartz tube;
  • the quartz tube has a tube wall thickness of less than 0.2 mm.
  • Another embodiment of the present application further provides a method for preparing a heater for an aerosol generating device, comprising:
  • the precursor comprises at least one of ceramic, glass, and quartz,
  • the precursor has a tube wall thickness greater than 0.2 mm;
  • a heating element is formed on the substrate.
  • the above aerosol generating device uses an ultra-thin substrate with a tube wall thickness of less than 0.2 mm, which is more sensitive to temperature increase or decrease during the heating process and is beneficial for reducing energy consumption.
  • FIG1 is a schematic diagram of an aerosol generating device provided by an embodiment
  • FIG2 is a schematic structural diagram of an embodiment of the heater in FIG1 ;
  • FIG3 is an exploded schematic diagram of the heater in FIG2 from one viewing angle
  • FIG4 is a temperature field distribution diagram of the heater in FIG2 during the heating process
  • FIG5 is a schematic structural diagram of another embodiment of the heater in FIG1 ;
  • FIG6 is a schematic diagram of a substrate thinning process in one embodiment
  • FIG7 is a schematic diagram of a substrate thinning process in yet another embodiment
  • FIG8 is a comparison diagram of the heating rate of a substrate before and after being thinned by circular grinding in one embodiment
  • FIG9 is a schematic diagram of a heating curve of an aerosol generating article in one embodiment
  • FIG. 10 is a schematic diagram showing the preparation of a heater according to yet another embodiment.
  • One embodiment of the present application provides an aerosol generating device 100 that heats, rather than burns, an aerosol generating product 1000 such as a cigarette, thereby causing at least one component of the aerosol generating product 1000 to volatilize or release to form an aerosol for inhalation, as shown in FIG. 1 .
  • the aerosol-generating product 1000 preferably uses a tobacco-containing material that releases volatile compounds from the matrix when heated; or it can also be a non-tobacco material that can be heated and suitable for electric heating to produce smoke.
  • the aerosol-generating product 1000 preferably uses a solid matrix, which can include one or more of powder, particles, fragments, strips, or flakes of one or more of herb leaves, dried flowers, herbal crops with volatile aromas, tobacco leaves, homogenized tobacco, and expanded tobacco; or the solid matrix can contain additional tobacco or non-tobacco volatile compounds. Aroma compounds are released when the substrate is heated.
  • the aerosol generating article 1000 is received in the aerosol generating device 100 , a portion thereof is exposed outside the aerosol generating device 100 , such as a filter tip, which is advantageous for the user to inhale.
  • FIG1 The structure of an aerosol generating device according to an embodiment of the present application can be seen in FIG1 .
  • the overall appearance of the device is generally configured as a flat cylinder.
  • the external components of the aerosol generating device 100 include:
  • the shell 10 basically defines the outer surface of the aerosol generating device, and its interior is a hollow structure, thereby forming an assembly space for necessary functional components such as electronic devices and heating devices.
  • the shell 10 has a proximal end 110 and a distal end 120 opposite to each other along the length direction; in use, the proximal end 110 is the end close to the user for easy operation of the aerosol generating product 1000, heating and inhalation; the distal end 120 is the end away from the user. Among them,
  • the proximal end 110 is provided with a receiving opening 111 , through which the aerosol generating article 1000 can be received in the housing 10 to be heated or removed from the housing 10 ;
  • the distal end 120 is provided with an air inlet 121 ; the air inlet 121 is used to allow external air to enter the housing 10 during the suction process.
  • the housing can be formed of a metal or alloy such as stainless steel, aluminum, etc.
  • suitable materials include various plastics (e.g., polycarbonate), metal-plating over plastic, ceramics, and the like.
  • the aerosol generating device 100 further includes:
  • the chamber is used to accommodate or receive the aerosol-generating article 1000 ; in use, the aerosol-generating article 1000 can be removably received in the chamber through the receiving opening 111 .
  • the aerosol generating device 100 further includes:
  • the air channel 150 is located between the chamber and the air inlet 121 ; thus, in use, the air channel 150 provides a channel path from the air inlet 121 into the chamber/aerosol generating article 1000 , as shown by arrow R11 in FIG. 1 .
  • the aerosol generating device 100 further includes:
  • a battery cell 130 for power supply preferably, the battery cell 130 is a rechargeable DC battery cell 130 and can be charged by an external power source;
  • the circuit board 140 is arranged or integrated with a circuit for controlling the heating or operation of the aerosol generating device 100 .
  • the aerosol generating device 100 further includes:
  • the heater 30 at least partially surrounds and defines a chamber, and when the aerosol generating article 1000 is received in the housing 10, the heater 30 at least partially surrounds or encloses the aerosol generating article 1000 and heats the aerosol generating article 1000 from the periphery. Furthermore, when the aerosol generating article 1000 is received in the housing 10, it is at least partially contained and retained in the heater 30.
  • the heater 30 is configured to be substantially in a longitudinally long tubular shape and comprises:
  • the tubular substrate 31 is made of a material with good thermal conductivity, such as ceramic, glass, quartz, etc.; in use, the substrate 31 at least partially defines a chamber for accommodating and holding the aerosol generating product 1000.
  • the substrate 31 is electrically insulating.
  • the substrate 31 does not include a single metal, or the substrate 31 does not include a single metal tube such as an aluminum tube, a stainless steel tube or a copper tube or an alloy.
  • the tubular substrate 31 has a length of about 15 to 60 mm; and the tubular substrate 31 has an inner diameter of about 5.4 to 7.8 mm.
  • the ceramic substrate 31 may include at least one of ceramic oxides or ceramic nitrides such as aluminum oxide, silicon oxide, boron oxide, zirconium oxide, and iron oxide; and the substrate 31 made of the above glass or ceramic material has a thermal conductivity of about 1 to 30 W/m.k.
  • the length of the aerosol-generating article 1000 surrounded or enclosed by the substrate 31 is greater than 30 mm.
  • the heater 30 further includes:
  • the heating element 32 at least partially surrounds or encloses the substrate 31 ; in use, the substrate 31 in turn heats the aerosol-generating article 1000 by receiving or transferring heat from the heating element 32 .
  • the heating element 32 includes a resistive heating element; and the heating element 32 can generate resistive Joule heat and generate heat when a direct current flows through the heating element 32.
  • the material of the heating element 32 is a composite material of a metal material, a metal alloy, graphite, carbon, a conductive ceramic or other ceramic material and a metal material with appropriate impedance.
  • the appropriate metal or alloy material includes at least one of nickel, cobalt, zirconium, titanium, nickel alloy, cobalt alloy, zirconium alloy, titanium alloy, nickel-chromium alloy, nickel-iron alloy, iron-chromium alloy, iron-chromium-aluminum alloy, iron-manganese-aluminum-based alloy or stainless steel.
  • the heating element 32 may also include an electromagnetic induction heating element or an infrared heating element.
  • the heating element 32 is thermally conductive with the substrate 31; and the substrate 31 is heated by receiving the heat of the heating element 32, thereby heating the aerosol generating article 1000 received in the substrate 31.
  • the heating element 32 itself can generate heat through resistive Joule heat, or inductive heating, etc.
  • the substrate 31 is infrared-transmissive, and the heating element 32 is an electro-induced infrared emitting coating, and then the electro-induced infrared emitting coating can penetrate the substrate 31 by radiating infrared rays when current is supplied, so that it is received by the aerosol generating article 1000 and heats the aerosol generating article 1000.
  • the infrared emission layer is composed of oxides of at least one metal element such as Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, Zn, etc., and the coating of these metal oxides can be heated to an appropriate temperature when powered on to radiate far infrared rays; the thickness of the infrared emission layer can be preferably controlled to be 30 ⁇ m to 50 ⁇ m; the infrared emission layer is formed on the surface of the substrate 31
  • the oxides of the above metal elements can be sprayed on the outer surface of the tubular substrate 31 by atmospheric plasma spraying and then solidified.
  • the heater 30 may include only the heating element 32 , and a chamber is surrounded or defined by the heating element 32 to accommodate the aerosol generating article 1000 and directly transfer heat to the aerosol generating article 1000 for heating.
  • the heating element 32 is configured to be a cylindrical shape surrounding or enclosing the substrate 31.
  • the extension dimension of the heating element 32 along the length direction of the heater 30 is smaller than the extension dimension of the substrate 31; for example, in some specific implementations, the heating element 32 has a length greater than 20 to 50 mm.
  • the heater 30 includes a first end 310 and a second end 320 that are separated from each other along the length direction; and in a specific implementation, the first end 310 and the second end 320 are defined by two ends of the substrate 31 along the length direction.
  • the heating element 32 and the first end 310 have a spacing 313, and the size of the spacing 313 is about 3 to 10 mm; and the heating element 32 and the second end 320 have a spacing 314, and the size of the spacing 314 is about 3 to 10 mm.
  • the heating element 32 does not completely wrap or surround the outer surface of the substrate 31, so that the outer surface of the substrate 31 has a first exposed area defined by the spacing 313 near the first end 310.
  • the outer surface of the substrate 31 has a second exposed area defined by the spacing 314 near the second end 320.
  • the aerosol generating device 100 provides support for the heater 30 by providing a clamping or supporting component such as a PEEK ring, etc., combined with the first exposed area defined by the spacing 313 and the second exposed area defined by the spacing 314.
  • the heating element 32 is a resistive heating layer formed on the outside of the tubular substrate 31 by spraying or deposition; in this embodiment, the resistive heating layer is annular around at least part of the substrate 31. And in this embodiment, the resistive heating layer is closed in the circumferential direction of the heater 30. And in some embodiments, the heating element 32 formed by spraying or deposition as a resistive heating layer may include nickel-chromium alloy, nickel-iron alloy, platinum, tungsten, silver, conductive ceramics, etc. The thickness of the resistive heating layer of the heating element 32 may be approximately between 0.05 and 0.5 mm.
  • the resistance value of the resistive heating layer is advantageous for the resistance value of the resistive heating layer to be approximately between 0.5 ⁇ and 3 ⁇ when the annular first electrode 371 and the second electrode 372 guide the current in the longitudinal direction of the resistive heating layer.
  • the heater 30 further includes:
  • the first electrode 371 and the second electrode 372 are used to supply power to the heating element 32; the first electrode 371 and the second electrode 372 can be electrode rings, electrode caps, or electrode coatings formed by spraying, deposition, etc.; and the first electrode 371 and the second electrode 372 are rings surrounding the heating element 32. Shape; among them,
  • the first electrode 371 is close to the first end 321 of the heating element 32, and at least partially surrounds the heating element 32, and contacts the heating element 32 to form a conductive connection; and the second electrode 372 is close to the second end 322 of the heating element 32, and at least partially surrounds the heating element 32, and contacts the heating element 32 to form a conductive connection; the first electrode 371 is connected to the circuit board 140 by welding the conductive lead 331, and the second electrode 372 is connected to the circuit board 140 by welding the conductive lead 332, so as to guide the current in the longitudinal direction of the heating element 32.
  • the resistance value of the heating element 32 is advantageously approximately between 0.5 ⁇ and 3 ⁇ .
  • the heating element 32 may also include a heating mesh wound or wrapped around the substrate 31 .
  • the heater 30 further includes:
  • the temperature sensor 34 such as a thermistor temperature sensor PT1000 or a thermocouple, is coupled to the heating element 32 to sense the temperature of the heating element 32 and/or the heater 30 .
  • the combination position or temperature measurement position of the temperature sensor 34 and the heating element 32 is basically located at the longitudinal center of the heating element 32; or, the distance between the combination position of the temperature sensor 34 and the heating element 32 and the first end 321 of the heating element 32 is approximately between 1/3 and 1/3 of the length of the heating element 32.
  • the combination position of the temperature sensor 34 and the heating element 32 is basically close to or located at the longitudinal center of the heating element 32, so that the temperature sensor 34 is basically located in the highest temperature area of the heating element 32.
  • FIG. 4 shows a temperature field distribution diagram of the heating element 32 of the sprayed resistance heating layer during operation. It can be seen from FIG. 4 that the highest temperature area of the heating element 32 is basically close to or located at the longitudinal center, and the temperature of the central area is significantly higher than that of the areas close to both ends.
  • the heater 30 further comprises:
  • the surface insulating layer is formed on the outside of the heating element 32 and/or the first electrode 371 and/or the second electrode 372 by spraying, deposition or coating, etc., to provide insulation for them on the outer surface of the heater 30.
  • the surface insulating layer is a glaze layer formed by spraying, deposition or the like.
  • FIG. 5 shows a schematic diagram of a heater 30 according to another embodiment, in which the heater 30 comprises:
  • An electrically insulating substrate 31a is configured in a tubular shape surrounding or defining the chamber; and the substrate 31a has a third end 310a and a fourth end 320a that are separated from each other in a longitudinal direction;
  • the resistance heating track 32a is bonded to the outer surface of the substrate 31a by screen printing, spraying or deposition.
  • the resistance heating track 32a is reciprocated between the first end 321a and the second end 322a. and, both ends of the resistance heating track 32a are connected to the circuit board 140 by welding leads or the like, so that when current flows through, it can generate heat by the resistance Joule heat.
  • the resistance heating track 32a is a meandering track; and, the outer surface of the substrate 31a has a blank area 311a defined by the resistance heating track 32a, for mounting a temperature sensor and the like.
  • the wall thickness of the substrate 31/31a made of ceramic, glass or quartz is between 0.1 and 0.2 mm, which is more sensitive to controlling the temperature rise or fall of the substrate 31/32a during the heating process.
  • Figure 6 shows a schematic diagram of preparing a substrate 31/31a with an ultra-thin wall thickness of 0.1 to 0.2 mm in one embodiment; in the implementation shown in Figure 6, the substrate 31/31a obtained by injection molding a ceramic raw material in a mold is ground from the outer cylindrical surface through a centerless cylindrical grinding process to reduce its wall thickness to a wall thickness of 0.1 to 0.2 mm.
  • the above "centerless cylindrical grinding” is a term for mechanical processing.
  • the substrate 31/31a is ground from the outer cylindrical surface of the substrate 31/31a by the grinding wheels 1 and 2 of the centerless cylindrical grinding machine; and the substrate 31/31a is supported and guided to rotate by the support plate and/or guide wheel 4 of the centerless cylindrical grinding machine.
  • the outer cylindrical surface of the substrate 31/31a is ground by a centerless cylindrical grinding machine, and the tubular substrate 31/31a with a wall thickness greater than 0.6 mm obtained by injection molding and sintering of ceramic raw materials is ground to a wall thickness of 0.1-0.2 mm.
  • a schematic diagram of a centerless internal cylindrical grinding machine tool can be used to insert or extend at least one grinding wheel into the substrate 31/31a for grinding; the grinding wheel 1a extends into the substrate 31/31a and combines with the inner cylindrical surface of the substrate 31/31a, and the grinding wheel 2a abuts against the outer cylindrical surface of the substrate 31/31a for grinding. And in the centerless internal cylindrical grinding machine tool processing, the substrate 31/31a is supported and rotated by the guide wheel 4a and the guide wheel 5a. Through the internal cylindrical grinding machine tool processing, the tubular substrate 31/31a with a wall thickness greater than 0.6mm, which is sintered after injection molding of the ceramic raw material mold, is ground to a wall thickness of 0.1 to 0.2mm.
  • the three-point bending strength test standard: GBT6569-2006 a three-point bending strength tester was used to perform strength tests on the alumina ceramic substrate 31/31a with a tube wall of 0.18 mm and the alumina ceramic substrate 31/31a with a tube wall of 0.6 mm; in the test results, in the three-point bending strength test, the strength results of the upper end point, the middle point, and the lower end point are shown in the following table:
  • the strength of the ceramic tube substrate 31/31a is significantly reduced after the 0.6mm ceramic tube substrate 31/31a directly injected and sintered is thinned to 0.18mm by circular grinding.
  • the compressive strength of all test sites of the thinned substrate 31/31a is still maintained at more than 40N, which is completely feasible for the heating element 32 deposited or sprayed with a resistance heating layer or track.
  • FIG8 shows a heating curve of a heater 30 in an embodiment using an alumina ceramic substrate 31/31a with a tube wall of 0.18 mm and an alumina ceramic substrate 31/31a with a tube wall of 0.6 mm; in the comparison shown in FIG8 , the inner diameter of the substrate 31/31a is 5.7 mm, the length is 49 mm, and the power provided to the heater 30 is 30 W.
  • the alumina ceramic substrate 31/31a with a tube wall of 0.18 mm rises from room temperature to the target temperature of 320°C in about 29 seconds, and the alumina ceramic substrate 31/31a with a tube wall of 0.6 mm rises from room temperature to the target temperature of 320°C in about 48 seconds.
  • the heater 40 with an alumina ceramic substrate 31/31a with a tube wall of 0.18 mm has a faster temperature sensitivity.
  • the time for the alumina ceramic substrate 31/31a with a tube wall of 0.18 mm to rise from room temperature to the target temperature of 320°C is less than 30 seconds.
  • FIG9 further shows a schematic diagram of a heating curve of an aerosol generating article 1000 within a predetermined time in one embodiment.
  • the predetermined time is set based on the amount of aerosol that can be generated by the aerosol generating article 1000 and the puffing time (e.g., about 4 minutes) that the user is willing to accept; and the heating curve with the predetermined time includes:
  • Time stage S1 (0-t1 time, for example, about 10s): quickly heating from room temperature to a first target temperature T1 for preheating; the first target temperature is, for example, 350°C;
  • Time stage S2 (t1-t2 time, for example, about 5 seconds): the temperature drops from the first target temperature T1 to the second target temperature T2, for example, 320° C.;
  • Time stage S3 (t2-t3 time, for example, about 230s): aerosol generating product 1000 is basically maintained at the second target temperature T2 to be heated to generate an aerosol for inhalation; after the inhalation is completed, the power supply to the heater 30 is stopped and the aerosol is cooled naturally.
  • a heater 30 using an alumina ceramic substrate 31/31a with a tube wall of 0.6 mm and an alumina ceramic substrate 31/31a thinned to a tube wall of 0.18 mm by a circular grinding process is used to heat the same aerosol generating product 1000 according to the heating curve with a predetermined time as shown in FIG9 , and the measured energy consumption comparison results are shown in the following table.
  • the heater 30 using an alumina ceramic substrate 31/31a with a tube wall of 0.18mm has lower energy consumption, which is about 60 to 70J lower than the energy consumption of the heater 30 using an alumina ceramic substrate 31/31a with a tube wall of 0.6mm; for the heater 30 with a substrate 31/31a with a tube wall less than 0.2mm after thinning, it is beneficial to reduce energy consumption.
  • FIG. 10 shows a schematic diagram of preparing a heater 30 having a substrate 31 / 31a with a tube wall thickness less than 0.2 mm in another embodiment; in FIG. 10 , the preparation of the heater 30 includes:
  • raw materials for forming the substrate 31/31a such as ceramic powder, glass powder, quartz powder, etc., and mix the raw materials with a liquid additive for a tape casting process to form a slurry with fluidity;
  • the slurry is cast through a casting device to form a film 31b with a thickness of less than 0.2 mm;
  • a resistive heating layer or a track-type heating element 32 is printed, deposited or sprayed on the film 31b formed by casting;
  • the film 31b is rolled into a tube outside a tubular fixture and sintered to form a substrate 31/31a with a tube wall thickness of less than 0.2 mm.

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  • Resistance Heating (AREA)

Abstract

La présente demande propose un dispositif de génération d'aérosol, un dispositif de chauffage pour le dispositif de génération d'aérosol et un procédé de préparation. Le dispositif de génération d'aérosol comprend : une chambre utilisée pour recevoir un article de génération d'aérosol ; un substrat électriquement isolant conçu sous la forme d'un tube entourant ou définissant la chambre ; et un élément chauffant couplé au substrat et entourant au moins une partie du substrat. Le substrat et l'élément chauffant sont thermiquement conducteurs l'un par rapport à l'autre. Pendant l'utilisation, le substrat peut générer de la chaleur au moyen de la réception de chaleur provenant de l'élément chauffant, qui à son tour chauffe l'article de génération d'aérosol. Le substrat comprend une céramique, du verre et/ou du quartz, et l'épaisseur de paroi de tube du substrat est inférieure à 0,2 mm. Le dispositif de génération d'aérosol ci-dessus utilise un substrat ultra-mince qui a une épaisseur de paroi de tube inférieure à 0,2 mm, et le substrat ultra-mince est plus sensible à l'élévation ou à l'abaissement de température pendant un processus de chauffage et permet de réduire la consommation d'énergie.
PCT/CN2023/129985 2022-11-24 2023-11-06 Dispositif de génération d'aérosol, dispositif de chauffage pour dispositif de génération d'aérosol et procédé de préparation WO2024109531A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211480500.0 2022-11-24
CN202211480500.0A CN118058529A (zh) 2022-11-24 2022-11-24 气雾生成装置、用于气雾生成装置的加热器及制备方法

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