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
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
  • A24F40/46—Shape or structure of electric heating means
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
  • A24F40/48—Fluid transfer means, e.g. pumps
  • A24F40/485—Valves; Apertures
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/50—Control or monitoring
  • A24F40/57—Temperature control
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B3/00—Ohmic-resistance heating
  • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B3/00—Ohmic-resistance heating
  • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
  • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B3/00—Ohmic-resistance heating
  • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B3/00—Ohmic-resistance heating
  • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
  • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
• • 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
  • A24F40/20—Devices using solid inhalable precursors
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/70—Manufacture

Definitions

• the invention relates to the field of atomization, more specifically, to a heating assembly and an aerosol generating device.
• the heat-not-burn atomizing device is an aerosol generating device that heats the atomized material to form an inhalable aerosol by means of low-temperature heat-not-burn.
• the heating methods of aerosol generating devices are usually tubular peripheral heating or central embedded heating.
• tubular peripheral heating means that the heating element surrounds the aerosol generating matrix.
• the heating element is usually designed as a hollow circular tube. After inserting the aerosol generating substrate, the circle where the outline of the cross section of the aerosol generating substrate is located and the circle of the inner wall of the heating element The contact is coincident or tangent.
• This structure has at least the following disadvantages: the heat conduction distance from the outer surface of the aerosol generating substrate to the center is large, and the temperature difference between the surface and core of the aerosol generating substrate is large.
• the technical problem to be solved by the present invention is to provide a heating assembly with high heat conduction efficiency and an aerosol generating device with the heating assembly, aiming at the above-mentioned defects of the prior art.
• the technical solution adopted by the present invention to solve the technical problem is: to construct a heating assembly, the heating assembly includes a heating tube;
• a heating cavity for containing and heating the aerosol-generating substrate is formed in the heating tube, and the cross-sectional profile of the heating cavity is polygonal;
• At least part of the cavity walls of the heating chamber can squeeze the aerosol-generating substrate; the cross-sectional profile of the heating chamber has a maximum inscribed circle, and when the heating chamber contains the aerosol-generating substrate, The diameter of the largest inscribed circle is smaller than the outer diameter of the aerosol-generating substrate before extrusion.
• the cross-sectional profile of the heating chamber is a regular polygon or a Relo polygon.
• every two adjacent edges of the regular polygon or the Lello polygon are connected by a circular arc transition.
• the number of edges of the polygon is 3-7.
• the diameter of the largest inscribed circle is 0.2-2.0 mm smaller than the outer diameter of the aerosol-generating substrate before extrusion.
• the diameter of the largest inscribed circle is 3-9 mm.
• the maximum distance from the center of the largest inscribed circle to the cross-sectional outline of the heating chamber is greater than the radius of the largest inscribed circle.
• the maximum distance from the center of the largest inscribed circle to the cross-sectional outline of the heating chamber is greater than 2mm.
• the maximum distance from the center of the largest inscribed circle to the cross-sectional outline of the heating cavity is 3-5 mm.
• At least one airflow channel is formed between the outer wall of the aerosol-generating substrate and the wall of the heating chamber.
• the outer surface of the heating tube is provided with a heating body, and the inner surface of the heating tube is provided with a heat soaking film; the heat soaking film is arranged around the inner surface of the heating tube, and The length direction of the heating pipe is at least partially arranged.
• the heating body includes a heating film, a heating wire, a heating sheet or a heating net.
• the heat spreading film overlaps or at least partially overlaps with the high temperature region of the heating element in the length direction of the heating tube.
• the heat soaking film overlaps with the atomized substrate of the aerosol-generating substrate in the length direction of the heating tube or at least partially overlap.
• the heat spreading film is made of heat conducting material.
• the thermally conductive material includes copper or silver.
• the heating assembly further includes an infrared radiation heating film disposed on the surface of the heating tube.
• the heating assembly further includes a support arm disposed at one end of the heating tube for supporting the aerosol-generating substrate.
• the support arm and the heating tube are integrally formed, or the support arm and the heating tube are formed separately and then assembled together.
• the heating tube and/or the support arm is provided with at least one limiting boss for limiting the aerosol generating substrate.
• the present invention also provides an aerosol generating device, comprising the heating assembly described in any one of the above.
• Implementing the present invention has at least the following beneficial effects: when the aerosol-generating substrate is inserted into the heating tube, it will be squeezed radially inward by the heating tube; after the aerosol-generating substrate is squeezed and deformed, the distance from its radial surface to the center is reduced , thereby shortening the heat conduction distance, and at the same time, the air inside the atomized matrix in the aerosol-generating matrix is squeezed out, and the density of the atomized matrix increases, which can improve the heat conduction efficiency and improve the large temperature difference between the surface and core of the aerosol-generating matrix and heat conduction. The problem of low efficiency and long warm-up time.
• Fig. 1 is a schematic diagram of the three-dimensional structure of the heating assembly in the first embodiment of the present invention
• Fig. 2 is a schematic transverse cross-sectional view of the heating assembly shown in Fig. 1 containing an aerosol-generating substrate;
• Fig. 3 is a schematic longitudinal sectional view of the heating assembly shown in Fig. 1;
• Fig. 4 is a schematic diagram of the cross-sectional outline of the heating chamber in Fig. 1;
• Fig. 5 is a schematic perspective view of the three-dimensional structure of the heating assembly in the second embodiment of the present invention.
• Fig. 6 is a schematic longitudinal sectional view of the heating assembly shown in Fig. 5;
• Fig. 7 is a schematic diagram of the cross-sectional outline of the heating chamber of the heating assembly in the third embodiment of the present invention.
• Fig. 8 is a schematic diagram of the cross-sectional outline of the heating chamber of the heating assembly in the fourth embodiment of the present invention.
• Fig. 9 is a schematic diagram of the cross-sectional outline of the heating chamber of the heating assembly in the fifth embodiment of the present invention.
• Fig. 10 is a schematic diagram of the cross-sectional outline of the heating chamber of the heating assembly in the sixth embodiment of the present invention.
• Fig. 11 is a schematic diagram of the cross-sectional outline of the heating chamber of the heating assembly in the seventh embodiment of the present invention.
• Fig. 12 is a schematic longitudinal sectional view of the heating assembly in the eighth embodiment of the present invention.
• Fig. 13 is a schematic perspective view of the three-dimensional structure of the heating assembly in the ninth embodiment of the present invention.
• Fig. 14 is a schematic transverse cross-sectional view of the heating assembly shown in Fig. 13 containing an aerosol-generating substrate;
• Fig. 15 is a schematic perspective view of the three-dimensional structure of the heating element containing the aerosol-generating substrate in the tenth embodiment of the present invention.
• Fig. 16 is a schematic longitudinal sectional view of the heating assembly shown in Fig. 15;
• Fig. 17 is a schematic diagram of an exploded structure of the heating assembly shown in Fig. 15;
• Fig. 18 is a schematic diagram of a three-dimensional structure of an aerosol generating device inserted with an aerosol generating substrate in some embodiments of the present invention.
• Fig. 19 is a schematic longitudinal sectional view of the aerosol generating device shown in Fig. 18 when an aerosol generating substrate is inserted.
• first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
• the features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
• “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
• the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch.
• “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
• “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
• FIGS 1-4 show the heating assembly 1 in the first embodiment of the present invention.
• the heating method of the heating assembly 1 can be resistance conduction heating, electromagnetic heating, infrared radiation heating or composite heating.
• the heating assembly 1 includes a heating tube 12 , the heating tube 12 is in the shape of a hollow tube, and the inner wall of the heating tube 12 defines a heating chamber 120 for accommodating and heating the aerosol generating substrate 200 .
• the cross-section of the heating cavity 120 may be a non-circular polygon, such polygon includes but not limited to triangle, square, trapezoid, pentagon and so on.
• the cross-section of the heating cavity 120 is an axisymmetric polygon, further, the cross-section of the heating cavity 120 is a regular polygon or a Rello polygon.
• the cross-sectional contour line C of the heating cavity 120 has a maximum inscribed circle C1, and the diameter 2R of the maximum inscribed circle C1 is smaller than the outer diameter of the aerosol-generating substrate 200 before being squeezed.
• the diameter of the largest inscribed circle may be 0.2-2.0 mm smaller than the outer diameter of the aerosol-generating substrate 200 before being squeezed.
• the diameter 2R of the largest inscribed circle C1 may be 3-9 mm, such as 4 mm, preferably 5-7 mm.
• the aerosol-generating substrate 200 When the aerosol-generating substrate 200 is inserted into the heating cavity 120 , at least part of the cavity wall of the heating cavity 120 can press the aerosol-generating substrate 200 , prompting the aerosol-generating substrate 200 to deform radially inward. It can be understood that the more edges there are in the cross-sectional profile of the heating cavity 120 , the closer the cross-sectional profile of the heating cavity 120 is to a circle. In order to effectively squeeze the aerosol-generating substrate 200 to a certain extent, the number of edges in the cross-sectional profile of the heating chamber 120 should not be too many, and in some embodiments, the number of edges can be 3-7.
• the maximum distance L between the center of the largest inscribed circle C1 and the cross-sectional contour line C of the heating cavity 120 is greater than the radius R of the largest inscribed circle C1 .
• the maximum distance L from the center of the maximum inscribed circle C1 to the cross-sectional contour line C of the heating cavity 120 may be greater than 2 mm, preferably 3-5 mm.
• the heating tube 12 is a regular triangular tube, that is, the outer contour and the inner contour of the cross section of the heating tube 12 are approximately regular triangular.
• the cross-sectional contour line C of the heating chamber 120 that is, the cross-sectional inner contour line of the heating tube 12 , is roughly in the shape of a regular triangular prism with three straight edges C2 .
• the junction of every two straight edges C2 of the cross-sectional contour line C of the heating cavity 120 may be provided with a rounded corner C3, and the smoothness of the junction can be improved through proper chamfering.
• the external cross-sectional shape of the heating tube 12 corresponds to the cross-sectional shape of the heating chamber 120 , that is, the external cross-sectional shape of the heating tube 12 is also roughly a regular triangular prism connected by a circular arc transition.
• the external cross-sectional shape of the heating tube 12 may also be different from the cross-sectional shape of the heating cavity 120 , for example, the external cross-sectional shape of the heating tube 12 may also be a circle or other shapes.
• FIG. 2 is a cross-sectional view of the roughly cylindrical aerosol-generating substrate 200 accommodated in the heating tube 12 , where the dotted line represents the outline of the cross-section of the aerosol-generating substrate 200 before being squeezed.
• the air inside the atomized substrate 220 of the aerosol-generating substrate 200 is squeezed out, and the density of the atomized substrate 220 increases, thereby improving the heat conduction efficiency and improving the large temperature difference and low heat conduction efficiency of the aerosol-generating substrate 200.
• three airflow passages 121 may be formed between the outer wall of the aerosol-generating substrate 200 and the wall of the heating chamber 120, and the three airflow passages 121 are respectively located in the heating chamber. 120 Every two edges meet.
• the heating assembly 1 is heated by pure resistance conduction heating.
• the heating assembly 1 also includes a heating element 123 disposed on the surface of the heating tube 12 and capable of generating heat after being energized.
• the heating element 123 can be a heating film, a heating wire, a heating sheet or a heating net.
• the heating element 123 is a resistive heating film and can be disposed on the outer surface of the heating tube 12 .
• the heating element 123 generates heat after being energized, and transfers the generated heat from the outer surface of the heating tube 12 to the aerosol-generating substrate 200 accommodated in the heating tube 12 to heat the aerosol-generating substrate 200 .
• the heating tube 12 can be made of metal or non-metallic material with high thermal conductivity, which is conducive to the rapid transfer of heat, and the temperature field uniformity of the heating tube 12 is better under rapid temperature rise.
• the metal material with higher thermal conductivity may include stainless steel, aluminum or aluminum alloy.
• the non-metallic material with higher thermal conductivity may include ceramics, such as aluminum oxide, silicon carbide, aluminum nitride, silicon nitride and other ceramics.
• the inner surface of the heating tube 12 can also be provided with a heat soaking film 122 , and the heat soaking film 122 is arranged around the inner surface of the heating tube 12 and is at least partially arranged in the length direction (axial direction) of the heating tube 12 .
• the heat spreading film 122 can be made of high thermal conductivity materials such as copper or silver, and is used to make the temperature field on the inner surface of the heating tube 12 uniform, so as to achieve uniform heating of the aerosol generating substrate 200 .
• the heat spreading film 122 can be arranged corresponding to the high temperature area of the heating element 123 , and can be arranged corresponding to the atomizing substrate 220 of the aerosol generating substrate 200 .
• the heat equalizing film 122 overlaps or at least partially overlaps with the high temperature area of the heating element 123 and the atomizing substrate 220 in the length direction of the heating tube 12 .
• the high temperature area of the heating element 123 is usually an area where the distribution of heating traces is relatively dense, and this area generates more heat and has a higher temperature after the heating element 123 is energized.
• the heat soaking film 122 is set corresponding to the high temperature area of the heating element 123 and the atomization substrate 220, so that the heat in the high temperature area of the heating element 123 can be quickly transferred to the heat soaking film 122 and evenly distributed on the heat soaking film 122, so as to realize the mist Uniform heating of the substrate 220. Understandably, in other embodiments, the heat equalizing film 122 may also be disposed on the outer surface of the heating pipe 12 , for example, the heat equalizing film 122 may also be disposed between the resistance heating film and the outer surface of the heating pipe 12 .
• the heating assembly 1 in this embodiment also includes an upper part of the heating pipe 12 for introducing air.
• the guide part 11 of the aerosol-generating substrate 200 and the supporting wall 13 covering the bottom of the heating tube 12 are used for axially supporting and positioning the aerosol-generating substrate 200 .
• the guide component 11, the heating pipe 12, and the supporting wall 13 can be integrally formed, or can be formed separately and then assembled together.
• the supporting wall 13 covers the opening of the lower end of the heating tube 12 and can be integrally formed with the heating tube 12 .
• the inner side wall of the heating tube 12 and/or the upper side wall of the supporting wall 13 may also be provided with at least one limiting boss 14 for limiting the aerosol generating substrate 200 .
• the at least one limiting boss 14 and the heating tube 12 and/or the supporting wall 13 can be integrally formed, or they can be formed separately and then assembled together by welding or the like.
• there is one limiting boss 14 and the one limiting boss 14 can be formed by integrally bending upwards of the support wall 13 and can coincide with the central axis of the support wall 13 .
• the top surface of the limiting boss 14 is a plane, and the lower end surface of the aerosol-generating substrate 200 can abut against the at least one limiting boss 14 to achieve supporting positioning.
• the guide part 11 is in the shape of a hollow tube, and the inner wall of the guide part 11 defines an introduction cavity 110 for introducing the aerosol generating matrix 200 .
• the introduction cavity 110 has a first end 111 away from the heating tube 12 and a second end 112 close to the heating tube 12 .
• the introduction cavity 110 has a cross-section A and a cross-section B at the first end 111 and the second end 112 respectively, and the cross-sectional area of the cross-section B is smaller than the cross-sectional area of the cross-section A.
• the cross-sectional area of the cross-section A is not smaller than the cross-sectional area of the aerosol-generating substrate 200 before being squeezed.
• the cross-sectional area of the cross-section A is larger than the cross-sectional area of the aerosol-generating substrate 200 before being squeezed, which is beneficial to
• the aerosol-generating substrate 200 is smoothly introduced into the heating element 1 .
• the cross-sectional shape of the cross-section A may correspond to the cross-sectional shape of the aerosol-generating substrate 200 before being squeezed.
• the aerosol-generating substrate 200 is cylindrical, and the cross-sectional shape of the cross-section A is a circle. shape.
• the cross-sectional shape of the cross-section A can also be different from the cross-sectional shape of the aerosol-generating substrate 200, for example, the cross-sectional shape of the cross-section A can also be non-circular, including triangle, square, trapezoid, etc. polygon.
• the cross-sectional shape of the cross-section B matches the cross-sectional shape of the heating cavity 120 , and is different from the cross-sectional shape of the cross-section A.
• the cross-sectional shape of the cross-section B is roughly a regular triangular prism connected by a circular arc transition.
• the second end 112 of the introduction chamber 110 is connected to the upper end of the heating chamber 120 , and the cross-sectional size of the second end 112 of the introduction chamber 110 is consistent with the cross-sectional size of the heating chamber 120 .
• the cross-sectional dimension of the second end 112 of the introduction cavity 110 may also be smaller than the cross-sectional dimension of the heating cavity 120 .
• the introduction chamber 110 can adopt a smooth gradual transition from the first end 111 to the second end 112, that is, the cross-section of the introduction chamber 110 gradually changes from a circle at the first end 111 to a regular triangular prism consistent with the cross-section of the heating tube 12.
• the heating pipe 12 is connected.
• the aerosol-generating substrate 200 is smoothly inserted into the heating tube 12 through the guiding function of the guiding member 11 , and at the same time is pressed radially inward by the heating tube 12 into a triangular shape similar to the cross-sectional shape of the heating cavity 120 .
• the outer cross-sectional shape of the guide member 11 may correspond to the cross-sectional shape of the introduction cavity 110. Specifically, in this embodiment, the outer cross-sectional shape of the guide member 11 gradually changes from a circle at the upper end to a regular triangular prism at the lower end. . In other embodiments, the outer cross-sectional shape of the guide member 11 may also be different from the cross-sectional shape of the introduction cavity 110 .
• the heating assembly 1 in this embodiment can adopt a combined heating method of resistance conduction and infrared radiation, and the heating assembly 1 also includes an infrared radiation heating film 125 disposed on the surface of the heating tube 12 .
• the heating element 123 can be disposed on the outer surface of the heating tube 12
• the two electrode leads 124 can be respectively welded to the bottom outer surface of the heating tube 12 and welded to the heating element 123 .
• the infrared radiation heating film 125 can be disposed on the inner surface of the heating tube 12 .
• the heating tube 12 can be made of metal or non-metallic material with high thermal conductivity, and the temperature field uniformity of the heating tube 12 is better under rapid temperature rise.
• the metal material with high thermal conductivity may include stainless steel, aluminum or aluminum alloy.
• the non-metallic material with high thermal conductivity may include ceramics, such as aluminum oxide, silicon carbide, aluminum nitride, silicon nitride and other ceramics.
• the infrared radiation heating film 125 can also be disposed on the outer surface of the heating tube 12 , and in this case, the heating tube 12 can be made of materials such as quartz with high infrared transmittance.
• the heating assembly 1 may also only use infrared radiation heating, that is, the surface of the heating pipe 12 is only provided with an infrared radiation heating film 125 without a heating element 123 .
• the infrared radiation heating film 125 can be disposed on the inner surface of the heating tube 12, and at this time, the heating tube 12 can be made of metal or non-metallic material with high temperature resistance and low thermal conductivity.
• the infrared radiation heating film 125 can also be arranged on the outer surface of the heating tube 12, and at this time, the heating tube 12 can be made of materials such as quartz with low thermal conductivity and high infrared transmittance.
• FIG. 7 shows a schematic diagram of the cross-sectional contour line C of the heating chamber 120 in the third embodiment of the present invention.
• the cross-sectional contour line C of the heating chamber 120 in this embodiment is a positive triangle Prismatic, and every two straight edges are directly connected, that is, there is no chamfer at the junction of every two straight edges.
• Fig. 8 shows a schematic diagram of the cross-sectional contour line C of the heating chamber 120 in the fourth embodiment of the present invention, which is mainly different from the first embodiment in that the cross-sectional contour line C of the heating chamber 120 in this embodiment is a regular quadrilateral , and every two adjacent edges are directly connected.
• Fig. 9 shows a schematic diagram of the cross-sectional contour line C of the heating chamber 120 in the fifth embodiment of the present invention, which is mainly different from the first embodiment in that the cross-sectional contour line C of the heating chamber 120 in this embodiment is a regular quadrilateral , and every two adjacent edges are connected by a circular arc transition.
• FIG. 10 shows a schematic diagram of the cross-sectional contour line C of the heating chamber 120 in the sixth embodiment of the present invention.
• the main difference between it and the first embodiment is that the cross-sectional contour line C of the heating chamber 120 in this embodiment is positive six polygon, and every two adjacent edges are directly connected.
• Fig. 11 shows a schematic diagram of the cross-sectional contour line C of the heating chamber 120 in the seventh embodiment of the present invention.
• the cross-sectional contour line C of the heating chamber 120 in this embodiment has A low polygon with an odd number of curved sides.
• the odd-numbered arc-shaped surfaces of the heating chamber 120 have a larger contact area with the aerosol-generating substrate 200 .
• the cross-sectional contour line C is in the form of a Lello triangle.
• the cross-sectional contour line C may also be in the form of a Lello pentagon, a heptagon, or the like.
• Fig. 12 shows the heating assembly 1 in the eighth embodiment of the present invention.
• an introduction cavity 110 is formed in the guide member 11 and is axially aligned with the introduction cavity 110. Connected transition cavity 113 .
• the introduction cavity 110 has a second end 112 close to the heating tube 12 and a first end 111 away from the heating tube 12 .
• the introduction cavity 110 has a cross-section A and a cross-section B at the first end 111 and the second end 112 respectively, and the cross-sectional area of the cross-section A is larger than that of the cross-section B.
• the cross-sectional shape of the cross-section B of the introduction chamber 110 matches the cross-sectional shape of the heating chamber 120 , and the cross-sectional area of the cross-section B is smaller than or equal to the cross-sectional area of the heating chamber 120 .
• the upper end of the transition chamber 113 communicates with the second end 112 of the introduction chamber 110 .
• the lower end of the transition chamber 113 communicates with the upper end of the heating chamber 120 , and the cross-sectional shape and size of the lower end of the transition chamber 113 can match the cross-sectional shape and size of the upper end of the heating chamber 120 .
• the cross section of the heating chamber 120 is a racetrack circle, and the raceway circle
• the diameter of the largest inscribed circle of the circular cross-section is consistent with the length of the minor axis of the circular cross-section of the runway.
• two airflow passages 121 may be formed between the outer wall of the aerosol-generating substrate 200 and the wall of the heating chamber 120, and the two airflow passages 121 are located in the heating chamber respectively. 120 on both sides of the major axis.
• the cross-section of the heating chamber 120 can also be other non-circular, preferably axisymmetric non-circular.
• the cross-sectional shape of the second end 112 of the introduction chamber 110 communicating with the heating chamber 120 is a racetrack circular shape consistent with the cross-sectional shape of the heating chamber 120, and the cross-sectional size of the second end 112 of the introduction chamber 110 is the same as that of the heating chamber 120.
• the cross-sectional dimensions of the heating chamber 120 are consistent.
• the cross-sectional shape of the first end 111 of the introduction cavity 110 may be circular, and the cross-sectional shape of the introduction cavity 110 gradually changes from a circle at the first end 111 to a racetrack circle at the second end 112 .
• through holes 10 communicating with the heating chamber 120 may also be opened on the heating assembly 1 .
• the through hole 10 can be opened at any position of the heating assembly 1 as required.
• the through hole 10 can be opened on the side wall of the guide component 11 and/or the heating pipe 12 , and/or, the through hole 10 can also be opened on the support wall 13 and/or the limiting boss 14 .
• the shape, size and quantity of the through holes 10 are not limited.
• the heating assembly 1 may include a heating pipe 12, a guide member 11 arranged at the top of the heating pipe 12, and a support wall 13 arranged at the bottom of the heating pipe 12 And the outer tube 16 sleeved outside the heating tube 12 .
• the guide part 11, the heating tube 12, the supporting wall 13, and the outer tube 16 are formed separately and then assembled together.
• the heating tube 12 is a regular triangular tube, and the axial length of the heating tube 12 may be 25-31 mm.
• the inner wall of the heating tube 12 defines a heating cavity 120 for accommodating and heating the aerosol generating substrate 200 .
• the cross section of the heating cavity 120 is a regular triangular prism, and the three edges are connected by arc transitions.
• the cross-sectional outline of the heating chamber 120 has a maximum inscribed circle whose diameter is smaller than the outer diameter of the aerosol-generating substrate 200 before being extruded.
• the heating pipe 12 can be made of metal or non-metal material with high thermal conductivity.
• the outer wall of the heating tube 12 may be provided with a heating component 17, and the heating component 17 includes a heating element and/or a circuit board.
• the heating component 17 includes a flexible circuit board and a thick film heating element disposed on the flexible circuit board.
• the heating component 17 may also only include a heating element or a circuit board, the heating element may be a heating film, a heating sheet or a heating wire, and the circuit board may be a flexible circuit board or a rigid circuit board.
• the guide part 11 can be injection-molded with a high-temperature-resistant high-molecular polymer, such as PEEK (polyetheretherketone), high-temperature nylon, and the like.
• the guide member 11 may include a main body 115 , an end wall 116 extending outward from an outer wall of the main body 115 , and a ring wall 117 extending downward from the end wall 116 .
• the inner wall of the main body 115 defines the opening cavity 114 and the introduction cavity 110 .
• the cross-sectional shape of the opening 114 can match the cross-sectional shape of the aerosol-generating substrate 200 before being squeezed. In this embodiment, the cross-sectional shape of the opening 114 is circular.
• the cross-sectional area of the opening 114 may be greater than or equal to the cross-sectional area of the aerosol-generating substrate 200 before being squeezed.
• the introduction cavity 110 has a first end 111 away from the heating tube 12 and a second end 112 close to the heating tube 12 .
• the first end 111 of the introduction cavity 110 communicates with the lower end of the opening cavity 114 , and the cross-sectional shape of the introduction cavity 110 at the first end 111 can match the cross-sectional shape of the opening cavity 114 .
• the cross-sectional area of the introduction cavity 110 at the first end 111 may be smaller than or equal to the cross-sectional area of the opening cavity 114 .
• the cross-sectional area of the second end 112 of the introduction cavity 110 is smaller than the cross-sectional area of the first end 111 .
• the second end 112 of the introduction chamber 110 communicates with the upper end of the heating chamber 120 , and the cross-sectional shape and area of the second end 112 of the introduction chamber 110 match the cross-sectional shape and area of the heating chamber 120 .
• the introduction cavity 110 can adopt a gradual transition from the first end 111 to the second end 112 , that is, the cross-sectional shape of the introduction cavity 110 gradually changes from a circle at the first end 111 to a regular triangular prism at the second end 112 .
• the outer cross-sectional shape of the main body portion 115 can match the cross-sectional shape of the introduction cavity 110 .
• the end wall 116 can be formed by extending radially outward from the outer wall surface of the first end 111 of the main body 115 .
• the ring wall 117 can be tightly embedded in the upper opening of the outer tube 16 , and can be formed by extending vertically downward from the outer ring of the end wall 116 .
• the cross-section of the ring wall 117 can be circular, and an annular receiving space is formed between the inner wall surface of the ring wall 117 and the outer wall surface of the main body 115 for receiving the first heat insulating member 155 .
• the support arm 13 can be embedded in the opening of the lower end of the heating pipe 12, which can be made of metal or non-metal material with high thermal conductivity.
• the middle part of the support arm 13 is bent upwards to form a limiting boss 14 , and the lower end surface of the aerosol generating substrate 200 can abut against the limiting boss 14 to achieve support and positioning.
• the outer tube 16 can be in the shape of a round tube, and can be made of metal with high thermal conductivity, including stainless steel, copper alloy, aluminum alloy, etc., such as 430 stainless steel, copper or copper alloy. Alternatively, the outer tube 16 can also be made of non-metallic materials such as ceramics with high thermal conductivity, including alumina, silicon carbide, aluminum nitride, silicon nitride and the like. The outer tube 16 is made of high thermal conductivity material, which is beneficial to the uniform heating of the heating element 1 .
• the heating assembly 1 in this embodiment may further include a heat insulation assembly 15 disposed between the outer pipe 16 and the heating pipe 12 .
• the heat insulation component 15 may include a first heat insulation layer 151 , a second heat insulation layer 152 , a third heat insulation layer 153 , and a heat dissipation layer 154 that are sheathed outside the heating tube 12 in sequence.
• the material of the first heat insulation layer 151 and the third heat insulation layer 153 can be one or more of airgel, asbestos, glass fiber, polyether ether ketone, imide, polyetherimide or ceramics. combination, preferably an aerogel.
• the material of the heat dissipation layer 154 may be graphite sheet or graphene sheet.
• the second heat insulation layer 152 can be a vacuum tube.
• the heat insulation assembly 15 may further include a first heat insulation element 155 and a second heat insulation element 156 respectively disposed at two axial ends of the vacuum tube.
• the first heat insulator 155 and the second heat insulator 156 can be made of low thermal conductivity materials, preferably elastic materials with low thermal conductivity such as silicone.
• the high-temperature regions at both ends of the vacuum tube are respectively wrapped by the first heat insulating member 155 and the second heat insulating member 156 to realize heat insulation and sealing functions.
• the heat insulation assembly 15 can also be composed of only one or several of the first heat insulation layer 151, the second heat insulation layer 152, the third heat insulation layer 153, and the heat dissipation layer 154.
• the relative positional relationship of the first heat insulation layer 151, the second heat insulation layer 152, the third heat insulation layer 153, and the heat dissipation layer 154 can also be adjusted as required, for example, the heat dissipation layer 154 can also be arranged on the first heat insulation layer 151 and the second insulation layer 152.
• the heating assembly 1 may further include a base 18 embedded in the bottom of the outer tube 16 .
• the base 18 can be made of high temperature resistant materials such as PEEK, and can be tightly sleeved between the inner wall of the outer tube 16 and the outer wall of the second heat insulating member 156 .
• the heating assembly 1 can also include a temperature detection element 19, which can be installed at the bottom of the support arm 13 to detect the temperature of the bottom of the aerosol generating substrate 200, and also detect the number of suction ports through temperature changes.
• the temperature detection element 19 may be a thermistor with a negative temperature coefficient, and may be clamped between the support arm 13 and the second heat insulating member 156 .
• the aerosol generating device 100 may be roughly rectangular and columnar and may include a housing 2, a heating assembly 1 and a main board disposed in the housing 2. 3 and battery 4. Wherein, the heating assembly 1 can adopt the heating assembly structure in any of the above-mentioned embodiments. It can be understood that, in other embodiments, the aerosol generating device 100 is not limited to be in the shape of a rectangular column, and it can also be in other shapes such as a square column, a cylinder, an ellipse column, and the like.
• the top of the housing 2 is provided with a socket 20 for inserting the aerosol generating substrate 200.
• the cross-sectional shape and size of the socket 20 are compatible with the cross-sectional shape and size of the aerosol generating substrate 200.
• the aerosol generating substrate 200 can be inserted through the socket. 20 is inserted into the heating component 1 and contacts the inner wall of the heating component 1 . After the heating component 1 is energized and generates heat, it can transfer heat to the aerosol generating substrate 200 , so as to realize the baking and heating of the aerosol generating substrate 200 .
• the main board 3 is electrically connected to the battery 4 and the heating assembly 1 respectively.
• a related control circuit is arranged on the main board 3 , and the on-off connection between the battery 4 and the heating assembly 1 can be controlled by the switch 5 provided on the casing 2 .
• a dustproof cover 6 for covering or exposing the socket 20 may also be provided on the top of the housing 2 . When the aerosol generating device 100 is not needed, the dust-proof cover 6 can be pushed to cover the socket 20 to prevent dust from entering the socket 20 . When needed, push the dust-proof cover 6 to expose the socket 20 so that the aerosol-generating substrate 200 can be inserted through the socket 20 .
• the aerosol-generating substrate 200 may include an outer covering 210 and an atomizing substrate 220 disposed at the inner bottom of the outer covering 210 .
• the outer wrapping layer 210 may be outer wrapping paper.
• the atomized substrate 220 may be a material used for medical treatment or health preservation, for example, plant materials such as plant roots, stems, leaves, etc. in solid sheet or filament form.
• the aerosol generating device 100 bakes and heats the aerosol generating substrate 200 inserted therein at a low temperature, so as to release the aerosol extract in the atomized substrate 220 without burning.
• the aerosol generating substrate 200 may also include a hollow supporting section 230 , a cooling section 240 and a filtering section 250 arranged in the outer cladding 210 and sequentially arranged above the atomizing substrate 220 in the longitudinal direction.
• the cross-sectional shape of the aerosol-generating substrate 200 is not limited to being circular, and it can also be in other shapes such as ellipse, square, and polygon.

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Citations (11)

• 2021
  • 2021-09-08 CN CN202111052512.9A patent/CN113729288A/zh active Pending
• 2022
  • 2022-06-14 KR KR1020220072460A patent/KR20230036958A/ko unknown
  • 2022-07-20 JP JP2022115274A patent/JP2023039407A/ja active Pending
  • 2022-08-11 WO PCT/CN2022/111892 patent/WO2023035853A1/zh unknown

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