EP4371431A1 - Heating device for aerosol generation apparatus and aerosol generation apparatus - Google Patents
Heating device for aerosol generation apparatus and aerosol generation apparatus Download PDFInfo
- Publication number
- EP4371431A1 EP4371431A1 EP22841435.5A EP22841435A EP4371431A1 EP 4371431 A1 EP4371431 A1 EP 4371431A1 EP 22841435 A EP22841435 A EP 22841435A EP 4371431 A1 EP4371431 A1 EP 4371431A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heater
- heating element
- generation device
- resistance heating
- vapor generation
- 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.)
- Pending
Links
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- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
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- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
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Images
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
- A24F40/46—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
Definitions
- Embodiments of this application relate to the field of heat not burning cigarette device technologies, and in particular, to a heater for a vapor generation device and a vapor generation device.
- Tobacco products (such as cigarettes and cigars) burn tobacco during use to produce tobacco smoke. Attempts are made to replace these tobacco-burning products by manufacturing products that release compounds without combustion.
- Patent No. 202010054217.6 proposes to use a heater with a spiral heating wire encapsulated in an outer tube to heat the product to generate an aerosol.
- Embodiments of this application provide a vapor generation device, configured to heat a vapor generation product to generate an aerosol for inhalation, and including:
- the plurality of notches or hollow holes are discontinuous.
- the notches or hollow holes form a repeating pattern on the heating portion.
- the notches or hollow holes are in rectangular shapes, to enable the heating portion to form a grid pattern.
- the notches or hollow holes are constructed to have an extension size in a circumferential direction of the heater greater than an extension size in the axial direction.
- the notches or hollow holes are staggered in an axial direction of the heating element.
- the resistance heating element defines a hollow extending through the resistance heating element.
- the resistance heating element is in a tubular shape extending in the axial direction of the heater.
- the resistance heating element is formed through sheet winding.
- the heater further includes:
- the first conductive pin and the second conductive pin are made of different materials, to form, between the first conductive pin and the second conductive pin, a thermocouple for sensing a temperature of the resistance heating element.
- the first conductive pin is surrounded by a first electrical insulating layer
- the second conductive pin is surrounded by a second electrical insulating layer.
- the first electrical insulating layer and the second electrical insulating layer are about 2 micrometers to about 10 micrometers in thickness.
- the first electrical insulating layer and the second electrical insulating layer include polytetrafluoroethylene.
- the first electrical connection portion and/or the second electrical connection portion is constructed to be in a ring or strip shape extending in a circumferential direction of the heater.
- the first electrical connection portion and/or the second electrical connection portion is about 0.1 millimeters to about 2 millimeters in width in an axial direction.
- the resistance heating element is in a range of about 10 millimeters to about 16 millimeters in length extending in the axial direction of the heater.
- the resistance heating element is about 0.05 millimeters to about 0.5 millimeters in thickness in a radial direction of the heater.
- an extension size of the notches or hollow holes in the axial direction of the heater is about 0.1 millimeters to 0.5 millimeters.
- a distance between adjacent notches or hollow holes in the axial direction of the heater is about 0.1 millimeters to 0.5 millimeters.
- a distance between adjacent notches or hollow holes in the axial direction of the heater is variable.
- the resistance heating element is in a range of about 0.8 ohms to about 3 ohms in resistance.
- the heater further includes a base or flange close to the rear end, and the vapor generation device provides support for the heater by holding the base or flange.
- the base or flange avoids the resistance heating element in the axial direction of the heater.
- the base or flange is closer to the rear end than the resistance heating element.
- a distance of at least more than 0.1 millimeters is kept between the resistance heating element and the base or flange in the axial direction of the heater.
- the heater further includes:
- the heater further includes: a base body, extending in the axial direction of the heater; and the resistance heating element is arranged to surround the base body.
- a groove is provided on an outer surface of the base body, and at least a part of the resistance heating element is accommodated or held in the groove.
- an outer surface of the resistance heating element is not significantly protruding or recessed relative to the outer surface of the base body.
- the base body is rigid.
- the base body is formed by molding a moldable material in the resistance heating element, and is coupled to the resistance heating element.
- At least a part of the resistance heating element is visible on a surface of the heater.
- Another embodiment of this application further provides a heater for a vapor generation device, where the heater is constructed to be in a pin or needle shape, and includes a front end and a rear end that are opposite in an axial direction, and a resistance heating element extending between the front end and the rear end; the resistance heating element includes a first electrical connection portion close to the front end, a second electrical connection portion close to the rear end, and a heating portion located between the first electrical connection portion and the second electrical connection portion; and a plurality of discontinuous notches or hollow holes are provided on the heating portion.
- the foregoing vapor generation device and the heater are powered by the electrical connection portions at the free front end and the rear end, and generates heat at the heating portion that is formed between the electrical connection portions and has the plurality of discontinuous notches or hollow holes.
- Another embodiment of this application further provides a vapor generation device, configured to heat a vapor generation product to generate an aerosol for inhalation; and including:
- the heating portion is constructed in a spiral shape extending in an axial direction of the resistance heating element.
- a notch or hollow hole in a spiral shape is formed on the heating portion.
- Another embodiment of this application further provides a vapor generation device, configured to heat a vapor generation product to generate an aerosol for inhalation; and including:
- the base body includes:
- a groove is provided on an outer surface of the second section of the base body, and at least a part of the resistance heating element is accommodated or coupled in the groove.
- an outer surface of the resistance heating element is in substantially flat engagement with the outer surface of the second section. In other words, the outer surface of the resistance heating element is in an insignificantly protruding or recessed state relative to the outer surface of the second section.
- a plurality of protruding portions extending in a circumferential direction are formed on the outer surface of the second section of the base body.
- the protruding portions are discontinuous with each other, so that the outer surface of the second section of the base body is not completely continuous, but has at least one discontinuous portion.
- a distance between adjacent protruding portions is substantially constant in an axial direction of the base body.
- a distance between the adjacent protruding portions is variably arranged.
- the distance between the adjacent protruding portions gradually increases inward in the axial direction. In other words, a distance close to the free front end and/or the rear end is greater than that close to a central portion.
- the heater further includes a base or flange, where the base or flange is surrounding, mounted, or positioned on the third section.
- orientations or position relationships indicated by terms such as “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, and “circumferential” are orientations or position relationships shown based on the accompanying drawings, and are merely used for describing this application and simplifying the description, rather than indicating or implying that the apparatus or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation to this application.
- first and second are used merely for the purpose of description, and shall not be construed as indicating or implying relative importance or implying a quantity of indicated technical features. Therefore, features defining “first” and “second” can explicitly or implicitly comprise at least one of the features. In the descriptions of this application, unless otherwise specified, "a plurality of" means at least two, for example, two or three.
- connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediate medium, or internal communication between two elements or a mutual action relationship between two elements, unless otherwise specified explicitly.
- connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediate medium, or internal communication between two elements or a mutual action relationship between two elements, unless otherwise specified explicitly.
- a first characteristic “on” or “under” a second characteristic may be the first characteristic in direct contact with the second characteristic, or the first characteristic in indirect contact with the second characteristic through an intermediate medium.
- the first feature “over”, “above”, and “up” the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that a horizontal height of the first feature is higher than that of the second feature.
- the first feature “under”, “below”, and “down” the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that a horizontal height of the first feature is less than that of the second feature.
- the vapor generation device includes:
- the heater 30 is generally in a pin or needle shape, which is advantageous for insertion into the aerosol-forming product A.
- the heater 30 may be about 12 millimeters to 19 millimeters in length, and be about 2 millimeters to 4 millimeters in outer diameter.
- a tobacco-containing material releasing a volatile compound from a substrate when heated is preferably used for the aerosol-forming product A.
- a non-tobacco material that can be heated and then be suitable for electrically heated smoking may be used.
- a solid substrate that may include one or more of powder, a granule, a fragment, a thin strip, a strip, or a slice of one or more of a vanilla leaf, a tobacco leaf, homogeneous tobacco, and expanded tobacco, may be used for the aerosol-forming product A.
- the solid substrate may include an appended tobacco or non-tobacco volatile aroma compound, to be released when the substrate is heated.
- FIG. 2 is a schematic structural diagram of a heater 30 in an embodiment.
- the heater 30 includes:
- FIG. 3 is a schematic structural diagram of the base body 31 in FIG. 2 from another perspective.
- Construction of the base body 31 includes: a front end 311 and a rear end 312 that are opposite in an axial direction, where the front end 311 is a free end extending into the cavity; and the rear end 312 is an end generally used for assembly or connection with a vapor generation device, so that the heater 30 can be stably held in the vapor generation device.
- the base body 31 is rigid.
- the base body 31 is made of a material with an appropriate heat conduction and heat storage capability.
- the base body 31 is made of a non-metal inorganic material, for example, an insulating material such as a metal oxide (such as MgO, Al 2 O 3 , or B 2 O 3 ) or a metal nitride (such as Si 3 N 4 , B 3 N 4 , or Al 3 N 4 ), or another highly heat-conductive composite ceramic material.
- the foregoing base body 31 is made of a heat-conductive metal or alloy material.
- the heat-conductive metal or alloy material is preferably a material with a melting point lower than 800 degrees, such as Al with a melting point of 670 degrees or AlCu with a melting point of 640 degrees.
- the base body 31 when the base body 31 is the metal or alloy, the base body 31 needs to be surface-insulated, so that the resistance heating element 32 is insulated from the base body 31.
- a process method such as vacuum evaporation or thermal spraying is used to deposit or spray an insulating material on a surface of the base body 31 to form an insulating layer.
- the insulating material of the insulating layer is preferably an insulating material such as a metal oxide (such as MgO, Al 2 O 3 , or B 2 O 3 ) with an excellent thermal conductivity or a metal nitride (such as Si 3 N 4 , B 3 N 4 , or Al 3 N 4 ), or is optionally a high-temperature-resistant glass glaze.
- a melting point temperature of glass powder is higher than 800°C, and a minimum thereof is not lower than 450°C.
- the base body 31 includes:
- an outer surface of the second section 3120 of the base body 31 has a groove 3121 adapted to the tubular resistance heating element 32, and the resistance heating element 32 is accommodated or coupled in the groove 3121.
- an outer surface of the resistance heating element 32 is in substantially flat engagement with the outer surface of the second section 3120. In other words, the outer surface of the resistance heating element 32 is in an insignificantly protruding or recessed state relative to the outer surface of the second section 3120.
- a plurality of protruding portions 3122 extending in a circumferential direction are formed on the outer surface of the second section 3120 by using the groove 3121.
- the protruding portions 3122 are discontinuous with each other, so that the outer surface of the second section 3120 of the base body 31 is not completely continuous, but has at least one discontinuous portion.
- a distance between the protruding portions 3122 adjacent to each other in the axial direction is substantially constant in the axial direction of the base body 31.
- a distance between the protruding portions 3122 adjacent to each other is variably arranged.
- the distance between the adjacent protruding portions 3122 gradually increases inward in the axial direction.
- a distance between protruding portions 3122 close to the front end 311 and/or the rear end 312 is greater than that close to a central portion.
- a density of the corresponding tubular resistance heating element 32 is uneven. Specifically, a portion close to the center in the axial direction is loose, while portions at both ends are dense, which is advantageous for preventing heat from accumulating in the central portion of the heater 30 and improving uniformity of a temperature field.
- the heater 30 further includes a base or flange 33.
- the base or flange 33 is surrounding, mounted, or positioned on the third section 3130, and then the base or flange 33 may be clamped or held in the vapor generation device, so that the heater 30 can be stably held in the vapor generation device.
- the base or flange 33 is a heat-resistant material such as PEEK or ceramic, for example, ZrO 2 or Al 2 O 3 ceramic.
- the base or flange 33 is fixed on the third section 3130 through high-temperature adhesive bonding, molding such as in-mold injection molding, or welding.
- a cross-sectional area of the base or flange 33 is greater than a cross-sectional area of the third section 3130.
- FIG. 4 is a schematic diagram of the resistance heating element 32 in FIG. 2 from another perspective.
- the tubular shape of the resistance heating element 32 defines a hollow extending therethrough, and the resistance heating element 32 includes:
- the heating portion 3230 includes a plurality of notches or hollow holes extending in a circumferential direction.
- the notches or hollow holes include a first notch or hollow hole 3231 on a side in a radial direction, and a second notch or hollow hole 3232 on another side.
- the first notch or hollow hole 3231 and the second notch or hollow hole 3232 are staggered in an axial direction.
- the notches or hollow holes form a repeating pattern on the heating portion 3230.
- the first notch or hollow hole 3231 and/or the second notch or hollow hole 3232 is in a rectangular shape, so that the heating portion 3230 is in a grid pattern.
- an extension size of the notches or hollow holes in a circumferential direction of the resistance heating element 32 is greater than that in the axial direction.
- the notches or hollow holes may be further in circular, square, or polygonal shapes, so that the heating portion 3230 is in a honeycomb pattern.
- the heating portion 3230 extending between the first electrical connection portion 3210 and the second electrical connection portion 3220 are constructed into a spiral shape extending in the axial direction of the resistance heating element 32.
- the heating portion 3230 is an elongated strip extending in a form of a solenoid between the first electrical connection portion 3210 and the second electrical connection portion 3220.
- formation is performed on the spiral heating portion 3230.
- the plurality of notches or hollow holes for example, the first notch or hollow hole 3231 and/or the second notch or hollow hole 3232, are separated from each other and are discontinuous.
- the resistance heating element 32 is made of a metal material with appropriate impedance, a metal alloy, graphite, carbon, and a composite material of a conductive ceramic or another ceramic material and a metal material.
- An appropriate metal or alloy material includes at least one of nickel, cobalt, zirconium, titanium, a nickel alloy, a cobalt alloy, a zirconium alloy, a titanium alloy, a nickel-chromium alloy, a nickel-iron alloy, an iron-chromium alloy, an iron-chromium-aluminum alloy, a titanium alloy, an iron-manganese-aluminum-based alloy, stainless steel, or the like.
- a length d2 of the tubular resistance heating element 32 extending in the axial direction ranges from about 10 millimeters to about 16 millimeters.
- the tubular resistance heating element 32 is about 0.05 millimeters to about 0.5 millimeters in wall thickness.
- the tubular resistance heating element 32 is in a range of about 0.8 ohms to about 3 ohms in resistance.
- a width d3 of the first electrical connection portion 3210 and/or the second electrical connection portion 3220 in the axial direction is between about 0.1 millimeters and about 2 millimeters.
- a width d4 of the first notch or hollow hole 3231 and/or the second notch or hollow hole 3232 is between about 0.1 millimeters and 0.5 millimeters.
- a distance d5 between notches or hollow holes adjacent to each other is between about 0.1 millimeters and 0.5 millimeters.
- a distance between the notches or hollow holes adjacent to each other in the axial direction of the resistance heating element 32 is variably arranged. As described above, a portion close to the center has a large and loose distance, while portions at both ends have small and dense distances, which is advantageous for preventing heat from accumulating in the central portion of the resistance heating element 32 and improving uniformity of a temperature field.
- an arc of the first notch or hollow hole 3231 and/or the second notch or hollow hole 3232 extending in a circumferential direction is greater than ⁇ , which is advantageous for increasing resistance.
- the tubular resistance heating element 32 is obtained by alternately cutting a tubular base material from both sides in the radial direction to form the first notch or hollow hole 3231 and/or the second notch or hollow hole 3232.
- the notch or hollow hole on the tubular resistance heating element 32 is formed by electrochemical etching.
- a distance d1 is kept between the second electrical connection portion 3220 of the resistance heating element 32 and the base or flange 33 in the axial direction, where the distance d1 is at least more than 0.1 millimeters; and preferably, the distance is more than 0.5 millimeters, which is advantageous in preventing heat from being transferred to the base or flange 33.
- a first conductive pin 321 and a second conductive pin 322 are arranged on the tubular resistance heating element 32, to supply power to the tubular resistance heating element 32.
- the first conductive pin 321 and the second conductive pin 322 are located in the hollow of the tubular resistance heating element 32, where
- a first hole 313 is provided on a position of the second section 3120 of the base body 31 close to the first section 3110. After assembly, the first conductive pin 321 penetrates into the base body 31 from the first hole 313 and extends beyond the rear end 312 in the axial direction, for ease of connecting to the circuit 20.
- a second hole (not shown in the figure) for penetration of the second conductive pin 322 is further provided on a position of the second section 3120 of the base body 31 close to the third section 3130, and then the second conductive pin 322 extends beyond the rear end 312 of the base body 31, for ease of connecting to the circuit 20.
- a first insulating layer 323 is sleeved over a portion of the first conductive pin 321 exposed outside the rear end 312 of the base body 31.
- a second insulating layer 324 is sleeved over a portion of the second conductive pin 322 exposed outside the rear end 312 of the base body 31.
- the first insulating layer 323 and the second insulating layer 324 are respectively configured to provide insulation to exposed surfaces of the first conductive pin 321 and the second conductive pin 322.
- the first insulating layer 323 and the second insulating layer 324 are prepared by using insulating materials such as polyimide and polytetrafluoroethylene.
- the first insulating layer 323 and the second insulating layer 324 are between about 2 micrometers and about 10 micrometers in thickness.
- insulation may be provided to exposed surfaces of the first conductive pin 321 and the second conductive pin 322 by spraying insulating coats, for example, glazes.
- a material of the tubular resistance heating element 32 is preferably prepared by using a material with a positive or negative resistance temperature coefficient, for example, a nickel-aluminum alloy, a nickel-silicon alloy, a palladium-containing alloy, or a platinum-containing alloy.
- the circuit 20 may detect resistance of the resistance heating element 32, to determine a temperature of the resistance heating element 32.
- the first conductive pin 321 and the second conductive pin 322 are prepared by using two different couple wire materials among galvanic materials such as nickel, a nickel-chromium alloy, a nickel-silicon alloy, nickel-chromium-constantan, constantan copper, and ferrochromium. Therefore, a thermocouple that may be configured to detect the temperature of the resistance heating element 32 is formed between the first conductive pin 321 and the second conductive pin 322, to obtain the temperature of the resistance heating element 32.
- protective coats may be formed on outer surfaces of the resistance heating element 32 and the base body 31 in a manner such as deposition or spraying.
- the protective coat is insulating, and is configured to provide insulation to an exposed surface of the resistance heating element 32.
- the protective coat is transparent, so that at least a part of the resistance heating element 32 is visible on a surface of the heater 30. For example, glass or a glaze.
- the base body 31 is formed by molding in the tubular resistance heating element 32.
- the slurry is injected from a mold cavity into the resistance heating element 32, and the heater 30 may be obtained after the slurry is molded and solidified.
- FIG. 6 is a schematic structural diagram of a resistance heating element 32a after being unfolded according to another optional implementation.
- the resistance heating element 32a is formed by winding a sheet-like grid-shaped element on a surface of a base body 31. A winding direction is shown by an arrow R in FIG. 6 .
- the resistance heating element 32a includes:
- the hollow holes 3231a and the hollow holes 3232a are staggered in the longitudinal direction of the resistance heating element 32a, and at least are not aligned in the longitudinal direction.
- the hollow holes 3231a and/or the hollow holes 3232a are in rectangular shapes. In some other variations, the hollow holes 3231a and/or the hollow holes 3232a may be further in circular, square, or polygonal shapes, so that the heating portion 3230a is in a mesh pattern.
- the resistance heating element 32a are also about 0.05 millimeters to about 0.5 millimeters in thickness.
- the resistance heating element 32a further includes:
- the first conductive pin 321a and the second conductive pin 322a are located on an inner side instead of being exposed on an outer side.
- FIG. 7 to FIG. 9 are schematic structural diagrams of another heater 30b.
- the heater 30b includes:
- the heater 30b further includes a base or flange 33b, where in the figure, the base or flange 33b is a heat-resistant material such as ceramic or PEEK; and a shape is preferably a ring shape.
- the base or flange 33b is fixed at a portion of the shell 31b close to the rear end 312b by using a high-temperature adhesive or through molding, such as in-mold injection molding, so that a vapor generation device may support, clamp, or hold the base or flange 33b to fix the heater 30b.
- the shell 31b is prepared by using a heat-resistant and heat-conductive material such as glass, a ceramic, metal, or an alloy, for example, stainless steel.
- a heat-resistant and heat-conductive material such as glass, a ceramic, metal, or an alloy, for example, stainless steel.
- the resistance heating element 32b and an inner wall of the inner cavity 313b of the shell 31b abut to conduct heat to each other, and additionally, are insulating to each other when the metal or the alloy is used for the shell 31b.
- insulation may be formed between surfaces that the resistance heating element 32b and the inner wall contact by gluing, surface oxidation, spraying an insulating layer, or the like.
- the resistance heating element 32b includes: a first end and a second end that are opposite in an axial direction, where the first end has a first electrical connection portion 3210b, and the second end has a second electrical connection portion 3220b; and a heating portion 3230b extending between the first electrical connection portion 3210b and the second electrical connection portion 3220b.
- the first electrical connection portion 3210b and the second electrical connection portion 3220b are in ring shapes.
- the heating portion 3230b generates heat through resistance heating.
- the heating portion 3230b includes a plurality of notches or hollow holes extending in a circumferential direction, and a repeating pattern is formed.
- the notches or hollow holes are in rectangular, circular, square, or polygonal shapes, so that the heating portion 3230b is in a grid pattern.
- the resistance heating element 32b is in a range of about 10 millimeters to about 16 millimeters in length. In addition, the resistance heating element 32b is about 0.05 millimeters to about 0.5 millimeters in wall thickness. The resistance heating element 32b is in a range of about 0.8 ohms to about 3 ohms in resistance. The first electrical connection portion 3210b and/or the second electrical connection portion 3220b is about 0.1 millimeters to about 2 millimeters in width.
- a first conductive pin 321b and a second conductive pin 322b are further arranged on the tubular resistance heating element 32b, to supply power.
- the first conductive pin 321b and the second conductive pin 322b are located in the hollow of the tubular resistance heating element 32b, where
- a first insulating layer 323b is sleeved over an exposed surface of the first conductive pin 321b
- a second insulating layer 324b is sleeved over an exposed surface of the second conductive pin 322b.
- a circuit 20 may detect resistance of the resistance heating element 32b, to determine a temperature of the resistance heating element 32b.
- the first conductive pin 321b and the second conductive pin 322b are prepared by using two different couple wire materials, so that a thermocouple that may be configured to detect the temperature of the resistance heating element 32b is formed between the first conductive pin 321b and the second conductive pin 322b, to obtain the temperature of the resistance heating element 32b.
- the heater 30b further includes a filler located in the hollow of the shell 31b.
- the filler is configured to provide support to or hold the tubular resistance heating element 32b; and in addition, the filler is further configured to provide heat storage and heat retention in the shell 31b, thereby preventing the temperature of the heater 30b from suddenly dropping during a vaping process and keeping the temperature stable, which is advantageous.
- the filler is powder, including glass, an inorganic oxide with a melting point below 1500°C, a carbide, a nitride, or an inorganic salt, or the like.
- the filler uses at least one of alumina or a precursor thereof, silica or a precursor thereof, an aluminate, an aluminosilicate, an aluminum nitride, aluminum carbide, zirconia, silicon carbide, silicon boride, silicon nitride, titanium dioxide, titanium carbide, boron carbide, boron oxide, borosilicate, silicate, rare earth oxide, soda lime, barium titanate, lead zirconate titanate, aluminum titanate, barium ferrite, strontium ferrite, or a such inorganic material, which is easy to be obtained and prepared.
- the filler includes a highly heat-conductive material, for example, silicon carbide.
- filler power and an organic ceramic adhesive such as an epoxy adhesive are mixed to form a slurry, to be injected into the shell 3 1b mounted with the resistance heating element 32b.
- the heater 30b further includes a base body 34b located in the hollow of the shell 31b.
- the base body 34b provides support to the resistance heating element 32b.
- the base body 34b is in a rod or bar shape, and is made of a rigid material.
- the resistance heating element 32b is held by surrounding and being coupled on to the base body 34b.
- the base body 34b is formed by molding a molding material in the shell 31b.
- a material with a melting point lower than a melting point of the shell 31b of the heater for example, glass, silica, or a glaze, is used for the base body 34b, where original powder of the material is heated to be in a molten state and is then injected into the shell 31b accommodating the resistance heating element 32b, and then the molten state is cooled and solidified to form the base body 34b through natural cooling or cooling.
- the base body 34b is prepared in the shell 31b through an injection molding process.
- the original powder for the base body 34b and an organic additive are mixed to form an injection slurry, then the injection slurry is injected into the shell 31b accommodating the resistance heating element 32b, and the inner cavity 313b of the shell 31b is filled with the slurry.
- the heater 30b may be obtained.
- a material appropriate for injection molded base body 34b may include a metal oxide (such as MgO, Al 2 O 3 , or B 2 O 3 ) with an excellent thermal conductivity, a metal nitride (such as Si 3 N 4 , B 3 N 4 , or Al 3 N 4 ), heat-conductive metal or alloy materials that can be prepared by powder metallurgy technology, such as Al with a melting point of 670 degrees, and AlCu with a melting point of 640 degrees, or the like.
- a metal oxide such as MgO, Al 2 O 3 , or B 2 O 3
- a metal nitride such as Si 3 N 4 , B 3 N 4 , or Al 3 N 4
- heat-conductive metal or alloy materials that can be prepared by powder metallurgy technology, such as Al with a melting point of 670 degrees, and AlCu with a melting point of 640 degrees, or the like.
- a first hole 341b is also provided on the rod-shaped or bar-shaped base body 34b, for the first conductive pin 321b to penetrate into the first hole from a portion close to the upper end and extend beyond the lower end.
- a second hole 342b is also provided on the rod-shaped or bar-shaped base body 34b, for the second conductive pin 322b to penetrate into the second hole from a portion close to the lower end and extend beyond the lower end.
- the base or flange 33b avoids the resistance heating element 32b in an axial direction at a coupled portion of the shell 31b.
- a distance at least more than 0.1 millimeters is kept between the resistance heating element 32b and the second electrical connection portion 3220b in the axial direction; and preferably, the distance is at least more than 0.5 millimeters, which is advantageous in preventing heat from being transferred to the base or flange 33b.
- the resistance heating element 32b of the heater 30b is formed after the sheet-shaped element shown in FIG. 6 is wound on the rod-shaped or bar-shaped base body 34b, which is more convenient than preparation for a tubular shape.
- a groove 3121 or a protruding portion 3122 may also be provided on a surface of the base body 31 to accommodate and hold the resistance heating element 32b.
Landscapes
- Resistance Heating (AREA)
Abstract
This application provides a heater for a vapor generation device and a vapor generation device. The heater is constructed to be a pin or in a needle shape, and includes a front end and a rear end that are opposite in an axial direction, and a resistance heating element extending between the front end and the rear end; the resistance heating element includes a first electrical connection portion close to the front end, a second electrical connection portion close to the rear end, and a heating portion located between the first electrical connection portion and the second electrical connection portion; and a plurality of notches or hollow holes are provided on the heating portion. The foregoing heater is powered by the electrical connection portions at the front end and the rear end, and generates heat at the heating portion that is formed between the electrical connection portions and has the plurality of notches or hollow holes.
Description
- This application claims priority to
Chinese Patent Application No. 202110794796.2, filed with the China National Intellectual Property Administration on July 14, 2021 - Embodiments of this application relate to the field of heat not burning cigarette device technologies, and in particular, to a heater for a vapor generation device and a vapor generation device.
- Tobacco products (such as cigarettes and cigars) burn tobacco during use to produce tobacco smoke. Attempts are made to replace these tobacco-burning products by manufacturing products that release compounds without combustion.
- An example of such a product is a heating device that releases a compound by heating rather than burning a material. For example, the material may be tobacco or other non-tobacco products. These non-tobacco products may include or not include nicotine. Among known technologies, Patent No.
202010054217.6 - Embodiments of this application provide a vapor generation device, configured to heat a vapor generation product to generate an aerosol for inhalation, and including:
- a cavity, configured to receive the aerosol-forming product; and
- a heater, at least partially extending in the cavity, and configured to heat the aerosol-forming product, where the heater includes a free front end and a rear end that are opposite in an axial direction, and a resistance heating element extending between the free front end and the rear end;
- the resistance heating element includes a first electrical connection portion close to the free front end, a second electrical connection portion close to the rear end, and a heating portion located between the first electrical connection portion and the second electrical connection portion; and a plurality of notches or hollow holes are provided on the heating portion.
- In a preferred implementation, the plurality of notches or hollow holes are discontinuous.
- In a preferred implementation, the notches or hollow holes form a repeating pattern on the heating portion.
- In a preferred implementation, the notches or hollow holes are in rectangular shapes, to enable the heating portion to form a grid pattern.
- In a preferred implementation, the notches or hollow holes are constructed to have an extension size in a circumferential direction of the heater greater than an extension size in the axial direction.
- In a preferred implementation, the notches or hollow holes are staggered in an axial direction of the heating element.
- In a preferred implementation, the resistance heating element defines a hollow extending through the resistance heating element.
- In a preferred implementation, the resistance heating element is in a tubular shape extending in the axial direction of the heater.
- In a preferred implementation, the resistance heating element is formed through sheet winding.
- In a preferred implementation, the heater further includes:
- a first conductive pin, connected to the first electrical connection portion, and extending in the hollow to outside the second electrical connection portion; and
- a second conductive pin, connected to the second electrical connection portion, and extending in the hollow to outside the second electrical connection portion.
- In a preferred implementation, the first conductive pin and the second conductive pin are made of different materials, to form, between the first conductive pin and the second conductive pin, a thermocouple for sensing a temperature of the resistance heating element.
- In a preferred implementation, the first conductive pin is surrounded by a first electrical insulating layer, and the second conductive pin is surrounded by a second electrical insulating layer. The first electrical insulating layer and the second electrical insulating layer are about 2 micrometers to about 10 micrometers in thickness.
- In a preferred implementation, the first electrical insulating layer and the second electrical insulating layer include polytetrafluoroethylene.
- In a preferred implementation, the first electrical connection portion and/or the second electrical connection portion is constructed to be in a ring or strip shape extending in a circumferential direction of the heater.
- In a preferred implementation, the first electrical connection portion and/or the second electrical connection portion is about 0.1 millimeters to about 2 millimeters in width in an axial direction.
- In a preferred implementation, the resistance heating element is in a range of about 10 millimeters to about 16 millimeters in length extending in the axial direction of the heater.
- In a preferred implementation, the resistance heating element is about 0.05 millimeters to about 0.5 millimeters in thickness in a radial direction of the heater.
- In a preferred implementation, an extension size of the notches or hollow holes in the axial direction of the heater is about 0.1 millimeters to 0.5 millimeters.
- In a preferred implementation, a distance between adjacent notches or hollow holes in the axial direction of the heater is about 0.1 millimeters to 0.5 millimeters.
- In a preferred implementation, a distance between adjacent notches or hollow holes in the axial direction of the heater is variable.
- In a preferred implementation, the resistance heating element is in a range of about 0.8 ohms to about 3 ohms in resistance.
- In a preferred implementation, the heater further includes a base or flange close to the rear end, and the vapor generation device provides support for the heater by holding the base or flange.
- In a preferred implementation, the base or flange avoids the resistance heating element in the axial direction of the heater.
- In a preferred implementation, the base or flange is closer to the rear end than the resistance heating element.
- In a preferred implementation, a distance of at least more than 0.1 millimeters is kept between the resistance heating element and the base or flange in the axial direction of the heater.
- In a preferred implementation, the heater further includes:
- a shell, having a hollow extending axially; and
- the resistance heating element is accommodated and held in the hollow.
- In a preferred implementation, the heater further includes:
a base body, extending in the axial direction of the heater; and the resistance heating element is arranged to surround the base body. - In a preferred implementation, a groove is provided on an outer surface of the base body, and at least a part of the resistance heating element is accommodated or held in the groove.
- In a preferred implementation, an outer surface of the resistance heating element is not significantly protruding or recessed relative to the outer surface of the base body.
- In a preferred implementation, the base body is rigid.
- In a preferred implementation, the base body is formed by molding a moldable material in the resistance heating element, and is coupled to the resistance heating element.
- In a preferred implementation, at least a part of the resistance heating element is visible on a surface of the heater.
- Another embodiment of this application further provides a heater for a vapor generation device, where the heater is constructed to be in a pin or needle shape, and includes a front end and a rear end that are opposite in an axial direction, and a resistance heating element extending between the front end and the rear end;
the resistance heating element includes a first electrical connection portion close to the front end, a second electrical connection portion close to the rear end, and a heating portion located between the first electrical connection portion and the second electrical connection portion; and a plurality of discontinuous notches or hollow holes are provided on the heating portion. - The foregoing vapor generation device and the heater are powered by the electrical connection portions at the free front end and the rear end, and generates heat at the heating portion that is formed between the electrical connection portions and has the plurality of discontinuous notches or hollow holes.
- Another embodiment of this application further provides a vapor generation device, configured to heat a vapor generation product to generate an aerosol for inhalation; and including:
- a cavity, configured to receive the aerosol-forming product; and
- a heater, at least partially extending in the cavity, and configured to heat the aerosol-forming product, where the heater includes a free front end and a rear end that are opposite in an axial direction, and a resistance heating element extending between the free front end and the rear end; and
- the resistance heating element is constructed in a tubular shape extending in the axial direction of the heater.
- In a preferred implementation, the heating portion is constructed in a spiral shape extending in an axial direction of the resistance heating element.
- A notch or hollow hole in a spiral shape is formed on the heating portion.
- Another embodiment of this application further provides a vapor generation device, configured to heat a vapor generation product to generate an aerosol for inhalation; and including:
- a cavity, configured to receive the aerosol-forming product; and
- a heater, at least partially extending in the cavity, and configured to heat the aerosol-forming product, where the heater includes:
- a rigid base body; and
- a resistance heating element, extending in an axial direction of the heater and surrounding the base body.
- In a preferred implementation, the base body includes:
- a first section close to a free front end, where the first section is constructed in a conical shape;
- a second section, where the second section is located downstream of the first section, and the resistance heating element is coupled on to the second section; and
- a third section close to a rear end.
- In a preferred implementation, a groove is provided on an outer surface of the second section of the base body, and at least a part of the resistance heating element is accommodated or coupled in the groove. In addition, in a preferred implementation, after the resistance heating element is coupled on to the outer surface of the second section, an outer surface of the resistance heating element is in substantially flat engagement with the outer surface of the second section. In other words, the outer surface of the resistance heating element is in an insignificantly protruding or recessed state relative to the outer surface of the second section.
- In a preferred implementation, a plurality of protruding portions extending in a circumferential direction are formed on the outer surface of the second section of the base body. In addition, from a shape and construction point of view, the protruding portions are discontinuous with each other, so that the outer surface of the second section of the base body is not completely continuous, but has at least one discontinuous portion.
- In a preferred implementation, a distance between adjacent protruding portions is substantially constant in an axial direction of the base body. Alternatively, in some other variation implementations, a distance between the adjacent protruding portions is variably arranged. For example, specifically, in an optional implementation, the distance between the adjacent protruding portions gradually increases inward in the axial direction. In other words, a distance close to the free front end and/or the rear end is greater than that close to a central portion.
- In a preferred implementation, the heater further includes a base or flange, where the base or flange is surrounding, mounted, or positioned on the third section.
- The objective implementation, functional features, and advantages of this application are further described with reference to the embodiments and the accompanying drawings. One or more embodiments are exemplarily described with reference to the corresponding figures in the accompanying drawings, and the descriptions do not constitute a limitation to the embodiments. Components in the accompanying drawings that have same reference numerals are represented as similar components, and unless otherwise particularly stated, the figures in the accompanying drawings are not drawn to scale.
-
FIG. 1 is a schematic diagram of a vapor generation device according to an embodiment of this application; -
FIG. 2 is a schematic structural diagram of a heater inFIG. 1 according to an embodiment; -
FIG. 3 is a schematic structural diagram of a base body inFIG. 2 from another perspective; -
FIG. 4 is a schematic structural diagram of a tubular resistance heating element inFIG. 2 from another perspective; -
FIG. 5 is a schematic cross-sectional view of the heater inFIG. 2 from a perspective; -
FIG. 6 is a schematic structural diagram of a resistance heating element after being unfolded according to another embodiment; -
FIG. 7 is a schematic structural diagram of a heater according to another embodiment; -
FIG. 8 is a schematic cross-sectional view of the heater inFIG. 7 from a perspective; and -
FIG. 9 is a schematic exploded view of each part of the heater inFIG. 8 before being assembled. - To make the foregoing objectives, features, and advantages of this application more comprehensible, detailed description is made to specific implementations of this application below with reference to the accompanying drawings. In the following description, many specific details are described for fully understanding this application. However, this application may be implemented in many other manners different from those described herein. A person skilled in the art may make similar improvements without departing from the connotation of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
- In the description of this application, it should be understood that, orientations or position relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are orientations or position relationships shown based on the accompanying drawings, and are merely used for describing this application and simplifying the description, rather than indicating or implying that the apparatus or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation to this application.
- In addition, the terms "first" and "second" are used merely for the purpose of description, and shall not be construed as indicating or implying relative importance or implying a quantity of indicated technical features. Therefore, features defining "first" and "second" can explicitly or implicitly comprise at least one of the features. In the descriptions of this application, unless otherwise specified, "a plurality of" means at least two, for example, two or three.
- In this application, unless explicitly specified or limited otherwise, the terms "mounted", "connected", "connection", and "fixed" should be understood broadly. For example, a connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediate medium, or internal communication between two elements or a mutual action relationship between two elements, unless otherwise specified explicitly. A person of ordinary skill in the art can understand specific meanings of the foregoing terms in this application according to a specific situation.
- In this application, unless explicitly specified or limited otherwise, a first characteristic "on" or "under" a second characteristic may be the first characteristic in direct contact with the second characteristic, or the first characteristic in indirect contact with the second characteristic through an intermediate medium. Moreover, the first feature "over", "above", and "up" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that a horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below", and "down" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that a horizontal height of the first feature is less than that of the second feature.
- It should be noted that, when a component is referred to as "being fixed to" or "being disposed to" another component, the component may be directly on the other component, or an intervening component may exist. When a component is considered to be "connected to" another component, the component may be directly connected to the another component, or an intervening component may also exist. The terms "vertical", "horizontal", "upper", "down", "left", "right" and similar expressions used in this specification are only for purposes of illustration but not indicate a unique implementation.
- An embodiment of this application provides a vapor generation device. For construction thereof, reference may be made to
FIG. 1 . The vapor generation device includes: - a cavity, where an aerosol-forming product A is removably received in the cavity;
- a
heater 30, at least partially extending in the cavity, where when the aerosol-forming product A is received in the cavity, the heater is inserted into the aerosol-forming product A for heating, to enable the aerosol-forming product A to release a plurality of volatile compounds, and these volatile compounds are formed only through heating processing; - a
core 10, configured to supply power; and - a
circuit 20, configured to guide a current between the core 10 and theheater 30. - In a preferred embodiment, the
heater 30 is generally in a pin or needle shape, which is advantageous for insertion into the aerosol-forming product A. In addition, theheater 30 may be about 12 millimeters to 19 millimeters in length, and be about 2 millimeters to 4 millimeters in outer diameter. - Further, in an optional embodiment, a tobacco-containing material releasing a volatile compound from a substrate when heated is preferably used for the aerosol-forming product A. Alternatively, a non-tobacco material that can be heated and then be suitable for electrically heated smoking may be used. A solid substrate that may include one or more of powder, a granule, a fragment, a thin strip, a strip, or a slice of one or more of a vanilla leaf, a tobacco leaf, homogeneous tobacco, and expanded tobacco, may be used for the aerosol-forming product A. Alternatively, the solid substrate may include an appended tobacco or non-tobacco volatile aroma compound, to be released when the substrate is heated.
-
FIG. 2 is a schematic structural diagram of aheater 30 in an embodiment. Theheater 30 includes: - a
base body 31, generally constructed to be in a pin or needle shape; and - a
resistance heating element 32, a tubular element surrounding or sleeved over thebase body 31. - Further,
FIG. 3 is a schematic structural diagram of thebase body 31 inFIG. 2 from another perspective. Construction of thebase body 31 includes:
afront end 311 and arear end 312 that are opposite in an axial direction, where thefront end 311 is a free end extending into the cavity; and therear end 312 is an end generally used for assembly or connection with a vapor generation device, so that theheater 30 can be stably held in the vapor generation device. - In an implementation, the
base body 31 is rigid. In a further preferred implementation, thebase body 31 is made of a material with an appropriate heat conduction and heat storage capability. For example, in some optional implementations, thebase body 31 is made of a non-metal inorganic material, for example, an insulating material such as a metal oxide (such as MgO, Al2O3, or B2O3) or a metal nitride (such as Si3N4, B3N4, or Al3N4), or another highly heat-conductive composite ceramic material. Alternatively, in some other optional implementations, the foregoingbase body 31 is made of a heat-conductive metal or alloy material. In some embodiments, the heat-conductive metal or alloy material is preferably a material with a melting point lower than 800 degrees, such as Al with a melting point of 670 degrees or AlCu with a melting point of 640 degrees. In the foregoing implementations, when thebase body 31 is the metal or alloy, thebase body 31 needs to be surface-insulated, so that theresistance heating element 32 is insulated from thebase body 31. In an implementation, a process method such as vacuum evaporation or thermal spraying is used to deposit or spray an insulating material on a surface of thebase body 31 to form an insulating layer. In some optional implementations, the insulating material of the insulating layer is preferably an insulating material such as a metal oxide (such as MgO, Al2O3, or B2O3) with an excellent thermal conductivity or a metal nitride (such as Si3N4, B3N4, or Al3N4), or is optionally a high-temperature-resistant glass glaze. For example, preferably, a melting point temperature of glass powder is higher than 800°C, and a minimum thereof is not lower than 450°C. - Further, as shown in
FIG. 3 , thebase body 31 includes: - a
first section 3110 close to thefront end 311, where a shape of thefirst section 3110 is constructed into a shape of a conical tip, which is advantageous for insertion into an aerosol-forming product A; - a
second section 3120, where thesecond section 3120 is located downstream of thefirst section 3110, and theresistance heating element 32 is coupled on to thesecond section 3120; and - a
third section 3130 close to therear end 312, where thethird section 3130 is configured to be a part connected to the vapor generation device. During assembly, in the vapor generation device, thethird section 3130 may be clamped or held, so that theheater 30 can be stably held in the vapor generation device. - Further, as shown in
FIG. 3 , an outer surface of thesecond section 3120 of thebase body 31 has agroove 3121 adapted to the tubularresistance heating element 32, and theresistance heating element 32 is accommodated or coupled in thegroove 3121. In addition, in a preferred implementation, after theresistance heating element 32 is coupled on to the outer surface of thesecond section 3120, an outer surface of theresistance heating element 32 is in substantially flat engagement with the outer surface of thesecond section 3120. In other words, the outer surface of theresistance heating element 32 is in an insignificantly protruding or recessed state relative to the outer surface of thesecond section 3120. - Further, as shown in
FIG. 3 , a plurality of protrudingportions 3122 extending in a circumferential direction are formed on the outer surface of thesecond section 3120 by using thegroove 3121. In addition, from a shape and construction point of view, the protrudingportions 3122 are discontinuous with each other, so that the outer surface of thesecond section 3120 of thebase body 31 is not completely continuous, but has at least one discontinuous portion. - Further, in a preferred implementation as shown in
FIG. 3 , a distance between the protrudingportions 3122 adjacent to each other in the axial direction is substantially constant in the axial direction of thebase body 31. - Alternatively, in some other variation implementations, a distance between the protruding
portions 3122 adjacent to each other is variably arranged. For example, specifically, in an optional implementation, the distance between the adjacent protrudingportions 3122 gradually increases inward in the axial direction. In other words, a distance between protrudingportions 3122 close to thefront end 311 and/or therear end 312 is greater than that close to a central portion. Such a design is used, a density of the corresponding tubularresistance heating element 32 is uneven. Specifically, a portion close to the center in the axial direction is loose, while portions at both ends are dense, which is advantageous for preventing heat from accumulating in the central portion of theheater 30 and improving uniformity of a temperature field. - Further, according to a preferred embodiment as shown in
FIG. 2 , theheater 30 further includes a base orflange 33. The base orflange 33 is surrounding, mounted, or positioned on thethird section 3130, and then the base orflange 33 may be clamped or held in the vapor generation device, so that theheater 30 can be stably held in the vapor generation device. In the figure, the base orflange 33 is a heat-resistant material such as PEEK or ceramic, for example, ZrO2 or Al2O3 ceramic. In preparation, the base orflange 33 is fixed on thethird section 3130 through high-temperature adhesive bonding, molding such as in-mold injection molding, or welding. Further, as shown in the figure, a cross-sectional area of the base orflange 33 is greater than a cross-sectional area of thethird section 3130. - Further,
FIG. 4 is a schematic diagram of theresistance heating element 32 inFIG. 2 from another perspective. The tubular shape of theresistance heating element 32 defines a hollow extending therethrough, and theresistance heating element 32 includes: - a first end and a second end that are opposite in an axial direction, where the first end has a first
electrical connection portion 3210, and the second end has a secondelectrical connection portion 3220; and - a
heating portion 3230 extending between the firstelectrical connection portion 3210 and the secondelectrical connection portion 3220. In an implementation, the firstelectrical connection portion 3210 and the secondelectrical connection portion 3220 are in ring shapes. In an implementation, theheating portion 3230 generates heat through resistance heating. - Further, refer to
FIG. 4 . Theheating portion 3230 includes a plurality of notches or hollow holes extending in a circumferential direction. Specifically, the notches or hollow holes include a first notch orhollow hole 3231 on a side in a radial direction, and a second notch orhollow hole 3232 on another side. In addition, as shown in the figure, the first notch orhollow hole 3231 and the second notch orhollow hole 3232 are staggered in an axial direction. The notches or hollow holes form a repeating pattern on theheating portion 3230. - Further, in a more preferred implementation, the first notch or
hollow hole 3231 and/or the second notch orhollow hole 3232 is in a rectangular shape, so that theheating portion 3230 is in a grid pattern. In addition, it may be seen from the figure that, an extension size of the notches or hollow holes in a circumferential direction of theresistance heating element 32 is greater than that in the axial direction. - Alternatively, in another variation implementation, the notches or hollow holes may be further in circular, square, or polygonal shapes, so that the
heating portion 3230 is in a honeycomb pattern. - Alternatively, in another optional variation implementation, the
heating portion 3230 extending between the firstelectrical connection portion 3210 and the secondelectrical connection portion 3220 are constructed into a spiral shape extending in the axial direction of theresistance heating element 32. Specifically, in an implementation, theheating portion 3230 is an elongated strip extending in a form of a solenoid between the firstelectrical connection portion 3210 and the secondelectrical connection portion 3220. In addition, formation is performed on thespiral heating portion 3230. - In addition, in a preferred implementation as shown in the figure, the plurality of notches or hollow holes, for example, the first notch or
hollow hole 3231 and/or the second notch orhollow hole 3232, are separated from each other and are discontinuous. - In some implementations, the
resistance heating element 32 is made of a metal material with appropriate impedance, a metal alloy, graphite, carbon, and a composite material of a conductive ceramic or another ceramic material and a metal material. An appropriate metal or alloy material includes at least one of nickel, cobalt, zirconium, titanium, a nickel alloy, a cobalt alloy, a zirconium alloy, a titanium alloy, a nickel-chromium alloy, a nickel-iron alloy, an iron-chromium alloy, an iron-chromium-aluminum alloy, a titanium alloy, an iron-manganese-aluminum-based alloy, stainless steel, or the like. - Further, in a more preferred implementation, a length d2 of the tubular
resistance heating element 32 extending in the axial direction ranges from about 10 millimeters to about 16 millimeters. In addition, the tubularresistance heating element 32 is about 0.05 millimeters to about 0.5 millimeters in wall thickness. - Further, in a more preferred implementation, the tubular
resistance heating element 32 is in a range of about 0.8 ohms to about 3 ohms in resistance. - Further, in a more preferred implementation, a width d3 of the first
electrical connection portion 3210 and/or the secondelectrical connection portion 3220 in the axial direction is between about 0.1 millimeters and about 2 millimeters. - Further, in a more preferred implementation, a width d4 of the first notch or
hollow hole 3231 and/or the second notch orhollow hole 3232 is between about 0.1 millimeters and 0.5 millimeters. Further, in a more preferred implementation, a distance d5 between notches or hollow holes adjacent to each other is between about 0.1 millimeters and 0.5 millimeters. - Alternatively, in some variation implementations, a distance between the notches or hollow holes adjacent to each other in the axial direction of the
resistance heating element 32 is variably arranged. As described above, a portion close to the center has a large and loose distance, while portions at both ends have small and dense distances, which is advantageous for preventing heat from accumulating in the central portion of theresistance heating element 32 and improving uniformity of a temperature field. - Further, in a more preferred implementation, an arc of the first notch or
hollow hole 3231 and/or the second notch orhollow hole 3232 extending in a circumferential direction is greater than π, which is advantageous for increasing resistance. - Further, in a more preferred implementation, the tubular
resistance heating element 32 is obtained by alternately cutting a tubular base material from both sides in the radial direction to form the first notch orhollow hole 3231 and/or the second notch orhollow hole 3232. Alternatively, in another optional implementation, the notch or hollow hole on the tubularresistance heating element 32 is formed by electrochemical etching. - Further, as shown in
FIG. 2 , after the tubularresistance heating element 32 is coupled on to thesecond section 3120 of thebase body 31, a distance d1 is kept between the secondelectrical connection portion 3220 of theresistance heating element 32 and the base orflange 33 in the axial direction, where the distance d1 is at least more than 0.1 millimeters; and preferably, the distance is more than 0.5 millimeters, which is advantageous in preventing heat from being transferred to the base orflange 33. - Further, as shown in
FIG. 4 andFIG. 5 , a firstconductive pin 321 and a secondconductive pin 322 are arranged on the tubularresistance heating element 32, to supply power to the tubularresistance heating element 32. As shown inFIG. 4 andFIG. 5 , the firstconductive pin 321 and the secondconductive pin 322 are located in the hollow of the tubularresistance heating element 32, where - the first
conductive pin 321 is connected to the firstelectrical connection portion 3210 and extends from a first section of theresistance heating element 32 to the second end; and - the second
conductive pin 322 is connected to the secondelectrical connection portion 3220. - Further, in
FIG. 2 , afirst hole 313 is provided on a position of thesecond section 3120 of thebase body 31 close to thefirst section 3110. After assembly, the firstconductive pin 321 penetrates into thebase body 31 from thefirst hole 313 and extends beyond therear end 312 in the axial direction, for ease of connecting to thecircuit 20. - Similarly, a second hole (not shown in the figure) for penetration of the second
conductive pin 322 is further provided on a position of thesecond section 3120 of thebase body 31 close to thethird section 3130, and then the secondconductive pin 322 extends beyond therear end 312 of thebase body 31, for ease of connecting to thecircuit 20. - Further, as shown in
FIG. 5 , a first insulatinglayer 323 is sleeved over a portion of the firstconductive pin 321 exposed outside therear end 312 of thebase body 31. In addition, a second insulatinglayer 324 is sleeved over a portion of the secondconductive pin 322 exposed outside therear end 312 of thebase body 31. The first insulatinglayer 323 and the second insulatinglayer 324 are respectively configured to provide insulation to exposed surfaces of the firstconductive pin 321 and the secondconductive pin 322. In some preferred implementations, the first insulatinglayer 323 and the second insulatinglayer 324 are prepared by using insulating materials such as polyimide and polytetrafluoroethylene. - The first insulating
layer 323 and the second insulatinglayer 324 are between about 2 micrometers and about 10 micrometers in thickness. - Alternatively, in some other variation implementations, insulation may be provided to exposed surfaces of the first
conductive pin 321 and the secondconductive pin 322 by spraying insulating coats, for example, glazes. - In a preferred implementation, a material of the tubular
resistance heating element 32 is preferably prepared by using a material with a positive or negative resistance temperature coefficient, for example, a nickel-aluminum alloy, a nickel-silicon alloy, a palladium-containing alloy, or a platinum-containing alloy. During operation, according to a correlation between a temperature and resistance, thecircuit 20 may detect resistance of theresistance heating element 32, to determine a temperature of theresistance heating element 32. - Alternatively, in another preferred implementation, the first
conductive pin 321 and the secondconductive pin 322 are prepared by using two different couple wire materials among galvanic materials such as nickel, a nickel-chromium alloy, a nickel-silicon alloy, nickel-chromium-constantan, constantan copper, and ferrochromium. Therefore, a thermocouple that may be configured to detect the temperature of theresistance heating element 32 is formed between the firstconductive pin 321 and the secondconductive pin 322, to obtain the temperature of theresistance heating element 32. - Further, as shown in
FIG. 2 , after theresistance heating element 32 is assembled on thebase body 31, protective coats may be formed on outer surfaces of theresistance heating element 32 and thebase body 31 in a manner such as deposition or spraying. Preferably, the protective coat is insulating, and is configured to provide insulation to an exposed surface of theresistance heating element 32. In some other preferred implementations, the protective coat is transparent, so that at least a part of theresistance heating element 32 is visible on a surface of theheater 30. For example, glass or a glaze. - In an optional implementation, the
base body 31 is formed by molding in the tubularresistance heating element 32. For example, after raw material powder forming thebase body 31 and an organic additive for injection molding are mixed to form a slurry, the slurry is injected from a mold cavity into theresistance heating element 32, and theheater 30 may be obtained after the slurry is molded and solidified. -
FIG. 6 is a schematic structural diagram of aresistance heating element 32a after being unfolded according to another optional implementation. In an embodiment shown inFIG. 6 , theresistance heating element 32a is formed by winding a sheet-like grid-shaped element on a surface of abase body 31. A winding direction is shown by an arrow R inFIG. 6 . As shown inFIG. 6 , theresistance heating element 32a includes: - a first
electrical connection portion 3210a located at an upper end in a longitudinal direction, and a secondelectrical connection portion 3220a located at a lower end, where the firstelectrical connection portion 3210a and/or the secondelectrical connection portion 3220a is in a shape of a straight strip after being unfolded; and - a
heating portion 3230a extending between the firstelectrical connection portion 3210a and the secondelectrical connection portion 3220a, where a plurality ofhollow holes 3231a andhollow holes 3232a are provided on theheating portion 3230a, which is advantageous for reducing an area of theheating portion 3230a and increasing resistance. - Further, refer to a preferred implementation as shown in
FIG. 6 . Thehollow holes 3231a and thehollow holes 3232a are staggered in the longitudinal direction of theresistance heating element 32a, and at least are not aligned in the longitudinal direction. - In some implementations, the
hollow holes 3231a and/or thehollow holes 3232a are in rectangular shapes. In some other variations, thehollow holes 3231a and/or thehollow holes 3232a may be further in circular, square, or polygonal shapes, so that theheating portion 3230a is in a mesh pattern. - In some implementations, the
resistance heating element 32a are also about 0.05 millimeters to about 0.5 millimeters in thickness. - As shown in
FIG. 6 , theresistance heating element 32a further includes: - a first
conductive pin 321a, connected to the firstelectrical connection portion 3210a and extends from the upper end of theresistance heating element 32a to the lower end; and - a second
conductive pin 322a, connected to the secondelectrical connection portion 3220a. - As shown in
FIG. 6 , during winding, the firstconductive pin 321a and the secondconductive pin 322a are located on an inner side instead of being exposed on an outer side. - Further,
FIG. 7 to FIG. 9 are schematic structural diagrams of anotherheater 30b. In this implementation, theheater 30b includes: - a
shell 31b, where theshell 31b is constructed in a shape of a pin or needle of aninner cavity 313b, and afront end 311b is shown as a conical tip for ease of insertion into an aerosol-forming product A, and theinner cavity 313b has an opening or aperture at arear end 312b for ease of internal assembly of various functional components therein; and - a
resistance heating element 32b, configured to generate heat, where theresistance heating element 32b is in a tubular shape and defines a hollow extending through theresistance heating element 32b along an axial line; and after assembly, theresistance heating element 32b is accommodated and held in theinner cavity 313b of theshell 31b, and conducts heat with theshell 31b. - The
heater 30b further includes a base orflange 33b, where in the figure, the base orflange 33b is a heat-resistant material such as ceramic or PEEK; and a shape is preferably a ring shape. During assembly, the base orflange 33b is fixed at a portion of theshell 31b close to therear end 312b by using a high-temperature adhesive or through molding, such as in-mold injection molding, so that a vapor generation device may support, clamp, or hold the base orflange 33b to fix theheater 30b. - The
shell 31b is prepared by using a heat-resistant and heat-conductive material such as glass, a ceramic, metal, or an alloy, for example, stainless steel. Certainly, after assembly, theresistance heating element 32b and an inner wall of theinner cavity 313b of theshell 31b abut to conduct heat to each other, and additionally, are insulating to each other when the metal or the alloy is used for theshell 31b. For example, insulation may be formed between surfaces that theresistance heating element 32b and the inner wall contact by gluing, surface oxidation, spraying an insulating layer, or the like. - In this implementation, the
resistance heating element 32b includes:
a first end and a second end that are opposite in an axial direction, where the first end has a firstelectrical connection portion 3210b, and the second end has a secondelectrical connection portion 3220b; and aheating portion 3230b extending between the firstelectrical connection portion 3210b and the secondelectrical connection portion 3220b. In an implementation, the firstelectrical connection portion 3210b and the secondelectrical connection portion 3220b are in ring shapes. In an implementation, theheating portion 3230b generates heat through resistance heating. - Similarly, the
heating portion 3230b includes a plurality of notches or hollow holes extending in a circumferential direction, and a repeating pattern is formed. Similarly, the notches or hollow holes are in rectangular, circular, square, or polygonal shapes, so that theheating portion 3230b is in a grid pattern. - Similarly, the
resistance heating element 32b is in a range of about 10 millimeters to about 16 millimeters in length. In addition, theresistance heating element 32b is about 0.05 millimeters to about 0.5 millimeters in wall thickness. Theresistance heating element 32b is in a range of about 0.8 ohms to about 3 ohms in resistance. The firstelectrical connection portion 3210b and/or the secondelectrical connection portion 3220b is about 0.1 millimeters to about 2 millimeters in width. - Similarly, a first
conductive pin 321b and a secondconductive pin 322b are further arranged on the tubularresistance heating element 32b, to supply power. Similarly, the firstconductive pin 321b and the secondconductive pin 322b are located in the hollow of the tubularresistance heating element 32b, where - the first
conductive pin 321b is connected to the firstelectrical connection portion 3210b and extends from a first section of theresistance heating element 32b to the second end; and - the second
conductive pin 322b is connected to the secondelectrical connection portion 3220b. - Similarly, a first insulating
layer 323b is sleeved over an exposed surface of the firstconductive pin 321b, and a second insulatinglayer 324b is sleeved over an exposed surface of the secondconductive pin 322b. - Similarly, a
circuit 20 may detect resistance of theresistance heating element 32b, to determine a temperature of theresistance heating element 32b. Alternatively, similarly, the firstconductive pin 321b and the secondconductive pin 322b are prepared by using two different couple wire materials, so that a thermocouple that may be configured to detect the temperature of theresistance heating element 32b is formed between the firstconductive pin 321b and the secondconductive pin 322b, to obtain the temperature of theresistance heating element 32b. - In an optional implementation, as shown in
FIG. 8 andFIG. 9 , theheater 30b further includes a filler located in the hollow of theshell 31b. The filler is configured to provide support to or hold the tubularresistance heating element 32b; and in addition, the filler is further configured to provide heat storage and heat retention in theshell 31b, thereby preventing the temperature of theheater 30b from suddenly dropping during a vaping process and keeping the temperature stable, which is advantageous. - In some optional implementations, the filler is powder, including glass, an inorganic oxide with a melting point below 1500°C, a carbide, a nitride, or an inorganic salt, or the like. For example, the filler uses at least one of alumina or a precursor thereof, silica or a precursor thereof, an aluminate, an aluminosilicate, an aluminum nitride, aluminum carbide, zirconia, silicon carbide, silicon boride, silicon nitride, titanium dioxide, titanium carbide, boron carbide, boron oxide, borosilicate, silicate, rare earth oxide, soda lime, barium titanate, lead zirconate titanate, aluminum titanate, barium ferrite, strontium ferrite, or a such inorganic material, which is easy to be obtained and prepared. In some other optional implementations, the filler includes a highly heat-conductive material, for example, silicon carbide.
- During preparation, filler power and an organic ceramic adhesive such as an epoxy adhesive are mixed to form a slurry, to be injected into the shell 3 1b mounted with the
resistance heating element 32b. - Alternatively, in another variation implementation, as shown in
FIG. 8 andFIG. 9 , theheater 30b further includes abase body 34b located in the hollow of theshell 31b. Thebase body 34b provides support to theresistance heating element 32b. Specifically, thebase body 34b is in a rod or bar shape, and is made of a rigid material. Theresistance heating element 32b is held by surrounding and being coupled on to thebase body 34b. - Alternatively, in another variation implementation, the
base body 34b is formed by molding a molding material in theshell 31b. Specifically,
for example, in some implementations, a material with a melting point lower than a melting point of theshell 31b of the heater, for example, glass, silica, or a glaze, is used for thebase body 34b, where original powder of the material is heated to be in a molten state and is then injected into theshell 31b accommodating theresistance heating element 32b, and then the molten state is cooled and solidified to form thebase body 34b through natural cooling or cooling. - For example, in some other variation implementations, the
base body 34b is prepared in theshell 31b through an injection molding process. During preparation, the original powder for thebase body 34b and an organic additive are mixed to form an injection slurry, then the injection slurry is injected into theshell 31b accommodating theresistance heating element 32b, and theinner cavity 313b of theshell 31b is filled with the slurry. After injection is completed and the slurry is molded and solidified, theheater 30b may be obtained. In this implementation, a material appropriate for injection moldedbase body 34b may include a metal oxide (such as MgO, Al2O3, or B2O3) with an excellent thermal conductivity, a metal nitride (such as Si3N4, B3N4, or Al3N4), heat-conductive metal or alloy materials that can be prepared by powder metallurgy technology, such as Al with a melting point of 670 degrees, and AlCu with a melting point of 640 degrees, or the like. - Further, refer to a preferred implementation as shown in
FIG. 9 , afirst hole 341b is also provided on the rod-shaped or bar-shapedbase body 34b, for the firstconductive pin 321b to penetrate into the first hole from a portion close to the upper end and extend beyond the lower end. Similarly, asecond hole 342b is also provided on the rod-shaped or bar-shapedbase body 34b, for the secondconductive pin 322b to penetrate into the second hole from a portion close to the lower end and extend beyond the lower end. - Similarly, as shown in
FIG. 8 , the base orflange 33b avoids theresistance heating element 32b in an axial direction at a coupled portion of theshell 31b. According toFIG. 8 , a distance at least more than 0.1 millimeters is kept between theresistance heating element 32b and the secondelectrical connection portion 3220b in the axial direction; and preferably, the distance is at least more than 0.5 millimeters, which is advantageous in preventing heat from being transferred to the base orflange 33b. - Alternatively, in a variation implementation, the
resistance heating element 32b of theheater 30b is formed after the sheet-shaped element shown inFIG. 6 is wound on the rod-shaped or bar-shapedbase body 34b, which is more convenient than preparation for a tubular shape. - Similarly, for construction of the
base body 34b, agroove 3121 or a protrudingportion 3122 may also be provided on a surface of thebase body 31 to accommodate and hold theresistance heating element 32b. - The technical features in the foregoing embodiments may be randomly combined. For concise description, not all possible combinations of the technical features in the embodiments are described. However, provided that combinations of the technical features do not conflict with each other, the combinations of the technical features are considered as falling within the scope described in this specification.
- The foregoing embodiments only describe a plurality of implementations of this application specifically and in detail, but cannot be construed as a limitation to the patent scope of this application. It should be noted that for a person of ordinary skill in the art, various changes and improvements may be made without departing from the ideas of this application, which shall all fall within the protection scope of this application. Therefore, the protection scope of the patent of this application is subject to the protection scope of the appended claims.
Claims (30)
- A heater for a vapor generation device, wherein the heater is constructed to be in a pin or needle shape, and comprises a front end and a rear end that are opposite in an axial direction, and a resistance heating element extending between the front end and the rear end;
the resistance heating element comprises a first electrical connection portion close to the front end, a second electrical connection portion close to the rear end, and a heating portion located between the first electrical connection portion and the second electrical connection portion; and a plurality of notches or hollow holes are provided on the heating portion. - The heater for a vapor generation device according to claim 1, wherein the plurality of notches or hollow holes are discontinuous.
- The heater for a vapor generation device according to claim 1 or 2, wherein the notches or hollow holes are in rectangular shapes, to enable the heating portion to form a grid pattern.
- The heater for a vapor generation device according to claim 1 or 2, wherein the notches or hollow holes are constructed to have an extension size in a circumferential direction of the heater greater than an extension size in the axial direction.
- The heater for a vapor generation device according to claim 1 or 2, wherein the notches or hollow holes are staggered in an axial direction of the heating element.
- The heater for a vapor generation device according to claim 1 or 2, wherein the resistance heating element defines a hollow extending through the resistance heating element.
- The heater for a vapor generation device according to claim 1 or 2, wherein the resistance heating element is in a tubular shape extending in the axial direction of the heater.
- The heater for a vapor generation device according to claim 1 or 2, wherein the resistance heating element is formed through sheet winding.
- The heater for a vapor generation device according to claim 1 or 2, wherein the heater further comprises:a first conductive pin, connected to the first electrical connection portion, and extending in the hollow to outside the second electrical connection portion; anda second conductive pin, connected to the second electrical connection portion, and extending in the hollow to outside the second electrical connection portion.
- The heater for a vapor generation device according to claim 9, wherein the first conductive pin and the second conductive pin are made of different materials, to form, between the first conductive pin and the second conductive pin, a thermocouple for sensing a temperature of the resistance heating element.
- The heater for a vapor generation device according to claim 1 or 2, wherein the first electrical connection portion and/or the second electrical connection portion is constructed to be in a ring or strip shape extending in a circumferential direction of the heater.
- The heater for a vapor generation device according to claim 11, wherein the first electrical connection portion and/or the second electrical connection portion is about 0.1 millimeters to about 2 millimeters in width in an axial direction.
- The heater for a vapor generation device according to claim 1 or 2, wherein the resistance heating element is in a range of about 10 millimeters to about 16 millimeters in length extending in the axial direction of the heater.
- The heater for a vapor generation device according to claim 1 or 2, wherein the resistance heating element is 0.05 millimeters to about 0.5 millimeters in thickness in a radial direction of the heater.
- The heater for a vapor generation device according to claim 1 or 2, wherein an extension size of the notches or hollow holes in the axial direction of the heater is about 0.1 millimeters to 0.5 millimeters.
- The heater for a vapor generation device according to claim 1 or 2, wherein a distance between adjacent notches or hollow holes in the axial direction of the heater is about 0.1 millimeters to 0.5 millimeters.
- The heater for a vapor generation device according to claim 1 or 2, wherein a distance between adjacent notches or hollow holes in the axial direction of the heater is variable.
- The heater for a vapor generation device according to claim 1 or 2, wherein the resistance heating element is in a range of about 0.8 ohms to about 3 ohms in resistance.
- The heater for a vapor generation device according to claim 1 or 2, wherein the heater further comprises a base or flange close to the rear end, and the vapor generation device provides support for the heater by holding the base or flange.
- The heater for a vapor generation device according to claim 19, wherein the base or flange avoids the resistance heating element in the axial direction of the heater.
- The heater for a vapor generation device according to claim 20, wherein the base or flange is closer to the rear end than the resistance heating element.
- The heater for a vapor generation device according to claim 20, wherein a distance of at least more than 0.1 millimeters is kept between the resistance heating element and the base or flange in the axial direction of the heater.
- The heater for a vapor generation device according to claim 1 or 2, wherein the heater further comprises:a shell, having a hollow extending axially; andthe resistance heating element is accommodated and held in the hollow.
- The heater for a vapor generation device according to claim 1 or 2, wherein the heater further comprises:
a base body, extending in the axial direction of the heater; and the resistance heating element is arranged to surround the base body. - The heater for a vapor generation device according to claim 24, wherein a groove is provided on an outer surface of the base body, and at least a part of the resistance heating element is accommodated or held in the groove.
- The heater for a vapor generation device according to claim 25, wherein an outer surface of the resistance heating element is not significantly protruding or recessed relative to the outer surface of the base body.
- The heater for a vapor generation device according to claim 24, wherein the base body is rigid.
- The heater for a vapor generation device according to claim 24, wherein the base body is formed by molding a moldable material in the resistance heating element, and is coupled to the resistance heating element.
- The heater for a vapor generation device according to claim 1 or 2, wherein at least a part of the resistance heating element is visible on a surface of the heater.
- A vapor generation device, configured to heat an aerosol-forming product to generate an aerosol, and comprising:a cavity, configured to receive the aerosol-forming product; anda heater, at least partially extending in the cavity, and configured to heat the aerosol-forming product, wherein the heater comprises a free front end and a rear end that are opposite in an axial direction, and a resistance heating element extending between the free front end and the rear end;the resistance heating element comprises a first electrical connection portion close to the free front end, a second electrical connection portion close to the rear end, and a heating portion located between the first electrical connection portion and the second electrical connection portion; and a plurality of notches or hollow holes are provided on the heating portion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110794796.2A CN115606855A (en) | 2021-07-14 | 2021-07-14 | Heater for gas mist generating device and gas mist generating device |
PCT/CN2022/105547 WO2023284802A1 (en) | 2021-07-14 | 2022-07-13 | Heating device for aerosol generation apparatus and aerosol generation apparatus |
Publications (1)
Publication Number | Publication Date |
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EP4371431A1 true EP4371431A1 (en) | 2024-05-22 |
Family
ID=84854754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22841435.5A Pending EP4371431A1 (en) | 2021-07-14 | 2022-07-13 | Heating device for aerosol generation apparatus and aerosol generation apparatus |
Country Status (3)
Country | Link |
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EP (1) | EP4371431A1 (en) |
CN (1) | CN115606855A (en) |
WO (1) | WO2023284802A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101989855B1 (en) * | 2017-04-18 | 2019-06-17 | 주식회사 아모센스 | heater for electronic cigarette |
CN109007989A (en) * | 2018-10-12 | 2018-12-18 | 深圳市合元科技有限公司 | Low-temperature bake smoking set heating device and low-temperature bake smoking set |
CN108552597A (en) * | 2018-03-09 | 2018-09-21 | 达文金属制品有限公司 | A kind of heat generating device and electronic cigarette |
CN209546948U (en) * | 2019-01-23 | 2019-10-29 | 廖云 | Low-temperature bake not burning type electronic cigarette heater and thermostatically-controlled equipment |
CN211065057U (en) * | 2019-09-06 | 2020-07-24 | 深圳市合元科技有限公司 | Heater and aerosol generating device comprising same |
CN213428343U (en) * | 2020-09-14 | 2021-06-15 | 湖南中烟工业有限责任公司 | Heating body and low temperature smoking set with integral heating area |
-
2021
- 2021-07-14 CN CN202110794796.2A patent/CN115606855A/en active Pending
-
2022
- 2022-07-13 WO PCT/CN2022/105547 patent/WO2023284802A1/en active Application Filing
- 2022-07-13 EP EP22841435.5A patent/EP4371431A1/en active Pending
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CN115606855A (en) | 2023-01-17 |
WO2023284802A1 (en) | 2023-01-19 |
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