Aerosol-generating product, aerosol-generating system, and aerosol-generating device

Abstract

The invention provides an aerosol generating product, an aerosol generating system and an aerosol generating device. Wherein the aerosol-generating article comprises: an aerosol-generating substrate, an aerosol generated when the aerosol-generating substrate is heated; a filter element disposed downstream of the aerosol-generating substrate; a base disposed upstream of the aerosol-generating substrate; a heating element extending from the base into the aerosol-generating substrate; the base and / or the heating element are / is arranged to be capable of heating autonomously and / or to be capable of heating by receiving heat in a thermally conductive manner so as to add the aerosol-generating base. The aerosol-generating article, the base and the heating element can be heated by receiving heat by autonomous heating or by means of heat transfer, thereby heating the aerosol-generating substrate.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of heat-not-burn aerosol generation, and in particular to an aerosol generating product, an aerosol generating system, and an aerosol generating device. Background Art

[0002] Smoking articles (eg, cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. People have attempted to replace these tobacco-burning articles by creating products that release compounds without combustion.

[0003] 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 that may or may not contain nicotine. Known tobacco or other non-tobacco products heat the tobacco or other non-tobacco products by arranging an inductive heating element, such as a metal sheet-shaped susceptor, inside the product, thereby inducing the inductive heating element to generate heat to heat the tobacco or other non-tobacco product. Summary of the invention

[0004] One embodiment of the present application provides an aerosol generating article, comprising:

[0005] an aerosol generating substrate configured to generate an aerosol when heated;

[0006] a filter element disposed downstream of the aerosol generating substrate;

[0007] Also includes:

[0008] a base disposed upstream of the aerosol generating substrate;

[0009] a heating element extending from the base into the aerosol generating substrate;

[0010] The base and / or the heating element are arranged to generate heat by themselves and / or to receive heat by heat conduction, thereby heating the aerosol generating substrate.

[0011] In some embodiments, the base is permeable to air flow.

[0012] In some embodiments, the base defines a plurality of air channels extending axially therethrough and is configured such that air is heated when passing through the air channels and then delivered to the aerosol generating substrate, thereby heating the aerosol generating substrate.

[0013] In some embodiments, the thermal conductivity of the base and / or the heating element is greater than 80 W / mK.

[0014] In some embodiments, the base and / or the heating element can generate heat autonomously by being penetrated by a varying magnetic field.

[0015] In some embodiments, the susceptor and / or the heating element comprises graphite.

[0016] In some embodiments, the base and the heating element are integrally connected and are thermally conductive to each other.

[0017] In some embodiments, the heating element is arranged in a sheet shape, a rod shape, or a pin shape.

[0018] In some embodiments, it also includes:

[0019] a cooling element, arranged between the aerosol generating substrate and the filter element, for cooling the aerosol delivered downstream from the aerosol generating substrate; a cooling cavity is defined in the cooling element;

[0020] The heating element is longitudinally aligned with the cooling cavity.

[0021] Another embodiment of the present application further provides an aerosol generating system, comprising:

[0022] An aerosol-generating article as described above; and

[0023] An aerosol generating device comprising:

[0024] a chamber for receiving the aerosol-generating article;

[0025] an inducing element for inducing one or both of the heating element and the base to generate heat autonomously; and / or a heater configured to transfer heat to the base to cause the base to generate heat.

[0026] In some embodiments, when the aerosol-generating article is received in the chamber, the heater abuts against or contacts the base to form heat conduction, and then transfers heat to the base by heat conduction to make the base generate heat.

[0027] In some embodiments, a plurality of through holes arranged along a predetermined direction are provided in the heater; in use, air at least partially passes through the through holes and is heated in the through holes and then output to the base of the aerosol generating product, so that the base generates heat by receiving heat from the hot air.

[0028] In some embodiments, the base is aligned with the heater when the aerosol-generating article is received within the chamber.

[0029] In some embodiments, a cross-sectional area of ​​the through hole of the heater is larger than a cross-sectional area of ​​the air passage of the base.

[0030] In some embodiments, the heater comprises:

[0031] A porous matrix is ​​arranged to extend along the axial direction of the heater; the through hole is defined in the porous matrix;

[0032] a second heating element surrounding at least a portion of the porous matrix;

[0033] The porous matrix is ​​thermally conductive with the second heating element to receive or absorb heat from the second heating element.

[0034] In some embodiments, the inducing element comprises:

[0035] an induction coil disposed around the chamber for generating a changing magnetic field; when the aerosol-generating article is received in the chamber, the induction coil surrounds only one of the heating element and the base and avoids the other to induce autonomous heating of only one of them;

[0036] Alternatively, an induction coil is arranged around the chamber to generate a changing magnetic field; when the aerosol generating product is received in the chamber, the induction coil simultaneously surrounds or surrounds the heating element and the base to simultaneously induce autonomous heating of the heating element and the base.

[0037] In some embodiments, the inducing element comprises:

[0038] an induction coil, arranged around the chamber, for generating a changing magnetic field; the induction coil comprises at least a first part and a second part arranged in sequence along the longitudinal direction;

[0039] When the aerosol-generating article is received within the chamber, a first portion of the induction coil is disposed around at least a portion of the heating element, and a second portion of the induction coil is disposed around at least a portion of the base.

[0040] In some embodiments, the heater is an induction heater that generates heat when penetrated by a changing magnetic field;

[0041] The induction coil also includes:

[0042] The third portion surrounds at least a portion of the heater to induce the heater to generate heat.

[0043] Another embodiment of the present application further provides an aerosol generating device, which is configured to heat an aerosol generating article to generate an aerosol; comprising:

[0044] a chamber for receiving the aerosol generating article;

[0045] a receiving opening through which an aerosol-generating article can be received into or removed from the chamber in use;

[0046] A heater is arranged away from the receiving port; a plurality of through holes are arranged in the heater; in use, air at least partially passes through the through holes, and is heated by the heater in the through holes and then output to the aerosol generating product;

[0047] An induction coil is disposed around at least a portion of the chamber for inducing the induction heating element to heat the aerosol-generating article.

[0048] Another embodiment of the present application also provides an aerosol generating article, comprising:

[0049] an aerosol generating substrate configured to generate an aerosol when heated;

[0050] a filter element disposed downstream of the aerosol generating substrate;

[0051] A heating element of carbon material, used to heat an aerosol generating substrate; the heating element comprises:

[0052] a base portion disposed upstream of the aerosol generating substrate;

[0053] An extension portion extends downstream from the base portion into the aerosol generating substrate.

[0054] In some embodiments, the heating element has a T-shape.

[0055] Another embodiment of the present application further provides an aerosol generating system, comprising:

[0056] An aerosol-generating article as described above; and

[0057] An aerosol generating device comprising:

[0058] a chamber for receiving the aerosol-generating article;

[0059] an inducing element for inducing autonomous heating of one or both of the base portion and the extension portion of the heating element; and / or a heater configured to transfer heat to the base portion to cause the base to heat.

[0060] In the above aerosol generating products, the heating element generates heat by self-heating or receiving heat from the base, thereby heating the aerosol generating substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0062] Figure 1 is a schematic diagram of an aerosol generating article provided by an embodiment;

[0063] Figure 2 yes Figure 1 A schematic cross-sectional view of an aerosol generating article from one perspective;

[0064] Figure 3 yes Figure 2 A schematic diagram showing one perspective of the center base and heating element;

[0065] Figure 4 is a schematic diagram of a base and a heating element in yet another embodiment;

[0066] Figure 5 is a schematic diagram of an aerosol generating system of an embodiment;

[0067] Figure 6 yes Figure 5 A schematic diagram of the structure of the middle resistance heater from one perspective;

[0068] Figure 7 is a schematic structural diagram of a resistance heater according to another embodiment;

[0069] Figure 8 is a schematic diagram of an aerosol generating system according to yet another embodiment;

[0070] Fig. 9 is a schematic diagram of an aerosol generating system according to yet another embodiment. DETAILED DESCRIPTION

[0071] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific implementation methods.

[0072] One embodiment of the present application provides a heated aerosol-generating article comprising a plurality of elements assembled in the form of a strip, capable of generating an aerosol when heated.

[0073] For example Figure 1 and Figure 2 is a schematic diagram of an aerosol generating article 1000 according to an embodiment of the present invention. Figure 1 and Figure 2As shown, the aerosol generating article 1000 includes an upstream end 1100 and a downstream end 1200 opposite to each other; as used herein, the terms 'upstream' and 'downstream' are used to describe the relative positions of the elements, or parts of the elements, of the aerosol generating article 1000 with respect to the direction in which the user draws suction on the aerosol generating article 1000 during its use. Downstream can be the direction in which the user draws suction, and upstream is the direction away from the user accordingly; and upstream is the direction in which the external air enters the aerosol generating article 1000, and downstream is the direction in which the air flow containing the aerosol is output from the aerosol generating article 1000. In use, the aerosol generated by heating in the aerosol generating article 1000 passes through the downstream end 1200 and is delivered to the user after leaving the aerosol generating article from the downstream end 1200. In use, the user can draw suction on the downstream end 1200 to inhale the aerosol.

[0074] Among them Figure 1 and Figure 2 In the illustrated embodiment, the aerosol generating article 1000 has an overall appearance of a longitudinally long cylindrical structure based on the convenience of inhalation by a typical user.

[0075] The appearance of the aerosol-generating article 1000 can mimic the appearance of a conventional smokable cigarette. The aerosol-generating article 1000 can have an outer diameter between approximately 5 mm and 12 mm (e.g., between approximately 5 mm and 10 mm). And the aerosol-generating article 1000 has a total length between approximately 40 mm and 100 mm. In an optional embodiment, the aerosol-generating article 1000 has a total length of approximately 45 mm to 55 mm.

[0076] according to Figure 1 and Figure 2 As shown, the aerosol generating article 1000 includes a plurality of elements arranged coaxially from an upstream end 1100 to a downstream end 1200:

[0077] Base 1140, aerosol generating substrate 1130, cooling element 1120 and filter element 1110. These elements are arranged sequentially and limited by outer wrapper 1160 to form aerosol generating article 1000. Wherein:

[0078] The base 1140 is adjacent to and defines the upstream end 1100, and the base 1140 is a heat diffuser for heating the air; the base 1140 can receive heat and transfer it to the air passing through the base 1140. Optionally, the base 1140 is a component with a high surface area and high porosity.

[0079] Aerosol generating substrate 1130 is used to describe the matrix that can release volatile compounds when heated, and these volatile compounds can form aerosol. Aerosol described here can be visible or invisible, and can include vapor (for example, fine particles of material, these particles are in gaseous state, these particles are usually liquid or solid at room temperature) and droplets of gas and condensed vapor. Aerosol generating substrate 1130 can include one or more of the following for example: powder, particle, pellet, fragment, strand, strip or thin sheet, it comprises one or more of the following: dried flower or fragrant leaf, grass leaf, tobacco leaf, tobacco main vein, expanded tobacco and homogenized tobacco. In optional embodiment, aerosol generating substrate 1130 comprises the aggregated thin sheet of the homogenized tobacco material of wrinkle, and the homogenized tobacco material of wrinkle is limited by outer wrapper 1160; The aggregated thin sheet of the homogenized tobacco material of wrinkle comprises glycerol, as aerosol forming agent.

[0080] The cooling element 1120 is arranged immediately downstream of the aerosol generating substrate 1130 and is adjacent to the aerosol generating substrate 1130. In use, the cooling element 1120 is used to provide support for the aerosol generating substrate 1130 downstream on the one hand, and on the other hand, the volatile substances released by the aerosol generating substrate 1130 after being heated pass along the cooling element 1120 toward the proximal end 11 of the aerosol generating article, and the volatile substances can be cooled in the cooling element 1120 to form an aerosol inhaled by the user. Figure 2 In the optional embodiment shown in , the cooling element 1120 includes a cooling cavity 1121 that extends along the length of the cooling element 1120. By extending the cooling cavity 1121 axially above, the air flow passing through the cooling element 1120 is in the longitudinal direction without a significant radial deviation. The cooling element 1120 can act to cool the temperature of the aerosol stream drawn through the cooling element 1120 by means of heat transfer. The components of the aerosol will interact with the space within the cooling element 1120 and lose thermal energy. The cooling element 1120 may include ceramics, metals, or organic polymer plastics, etc. In some embodiments, the temperature of the aerosol stream may decrease by more than 10 degrees Celsius as it is drawn through the cooling element 20. In some embodiments, the temperature of the aerosol stream may decrease by more than 25 degrees Celsius or more than 30 degrees Celsius as it is drawn through the cooling element 20.

[0081] The filter element 1110 is disposed immediately downstream of the cooling element 1120 and defines a downstream end 1200 and is adjacent to the cooling element 1120 for filtering the aerosol before delivery to a user. Figure 2 In the embodiment shown in FIG. 1 , the filter element 1110 comprises a conventional cellulose acetate or polypropylene tow filter having low filtration efficiency.

[0082] To assemble the aerosol-generating article 100, the various elements described above are aligned and tightly wrapped within the outer wrapper 1160. Figure 1 and Figure 2 In the embodiment shown in FIG. 4 , the outer wrapper 40 is conventional cigarette paper or metal foil or the like.

[0083] In some embodiments, the base 1140 is permeable to airflow, so that air can pass through the base 1140 during inhalation and then be delivered to the downstream aerosol-generating substrate 1130. In some embodiments, the base 1140 may include a porous body; the term "porous" is intended to cover materials that are porous in nature as well as substantially non-porous materials that are made porous or permeable by providing a plurality of holes. The porous material must have pores of sufficient size to allow air to pass through it and be drawn through the porous body. Because the porous body has a high surface area to volume ratio, the base 1140 can allow for rapid and efficient heating of the air drawn through the porous body. This can allow for uniform heating of the air drawn through the porous body, and therefore allow for more uniform heating of the aerosol-generating substrate 1130 downstream of the base 1140.

[0084] In some embodiments, the base 1140 can be induced to generate heat by self-heating and then heat the air passing through the base 1140. Or in some embodiments, the base 1140 can absorb heat by contact heat conduction to generate heat, thereby heating the air passing through the base 1140. When the porous body is thermally conductive, in an optional embodiment, the thermal conductivity of the base 1140 is at least 80W / mK, preferably at least 100W / mK, more preferably at least 150W / mK, and most preferably at least 200W / mK. When the base 1140 is thermally conductive, suitable thermally conductive materials include but are not limited to graphite, aluminum, copper, zinc, steel, silver, thermally conductive polymers or any combination or alloy thereof. In some embodiments, the base 1140 is formed by a heat storage material that is also thermally conductive, such as graphite. The length of the base 1140 may be between about 7mm and about 20mm, for example between 8mm and 15mm. In one embodiment, the length of the base 1140 may be about 10mm.

[0085] The hot air heated by the base 1140 may then cause the heated air to volatilize the downstream aerosol-generating substrate 1130. In this way, the aerosol-generating article 1000 may heat the aerosol-generating substrate 1130 primarily via indirect heating by the hot air.

[0086] according to Figure 1 and Figure 2 As shown, the aerosol generating article 100 further comprises:

[0087] The heating element 1150 is arranged in the aerosol generating substrate 1130 and connected to or maintained or abutted against or contacted with the base 1140; in use, the heating element 1150 can heat the aerosol generating substrate 1130 by receiving or conducting heat from the base 1140. In some embodiments, the thermal conductivity of the heating element 1150 is greater than 80 W / mK.

[0088] In some preferred embodiments, the heating element 1150 and the base 1140 of the aerosol generating article 100 are both made of carbon materials. The carbon material may include graphite, and may also be at least one of graphene, carbon fiber, carbon nanotube, carbon black, activated carbon, and the like.

[0089] according to Figure 2 and Figure 3 As shown, the heating element 1150 is arranged in a sheet-like shape extending within the aerosol-generating substrate 1130.

[0090] according to Figure 2 and Figure 3 As shown, the heating element 1150 is integrally connected to the base 1140.

[0091] according to Figure 2 and Figure 3 As shown, the base 1140 has a plurality of air channels 1141 arranged in an orderly manner in a predetermined direction; and in an embodiment, the plurality of air channels 1141 extend straight along the axial direction of the base 1140. And, the plurality of air channels 1141 penetrate the base 1140 along the axial direction of the base 1140. The plurality of air channels 1141 may be formed in the form of through holes in the base 1140 made of dense material; and in some embodiments, the cross section of the air channel 1141 is circular; or in some other embodiments, the air channel 1141 may also be a cross-sectional shape in various forms such as a hexagon, a quadrilateral, or a triangle.

[0092] In some embodiments, the plurality of air channels 1141 are arranged in an orderly manner in the base 1140. The extension of the air channels 1141 has a predetermined direction, rather than being disordered. In an embodiment, the plurality of air channels 1141 are arranged in an array in the base 1140. In an embodiment, air can pass through the air channels 1141 and is heated in the air channels 1141 and then output to the aerosol generating substrate 1130, such as Figure 2 As shown by the arrow R12 in the middle. In the embodiment, the arrangement of the plurality of air channels 1141 in the base 1140 makes the base 1140 in the form of a honeycomb structure.

[0093] exist Figure 3As shown in , a plurality of air channels 1141 are substantially uniformly distributed in the base 1140. Or in some other embodiments, a plurality of air channels 1141 are non-uniformly distributed in the base 1140. For example, the number / density of a plurality of air channels 1141 in the central region of the base 1140 is less than or greater than the number / distribution density near the outer region. In an embodiment, corresponding to the cylindrical base 1140, the central region of the base 1140 may be substantially the region within a distance from the center of the cross section in the radial direction equal to 1 / 2 of the diameter; the outer portion is the region surrounding the portion outside the central region. "Distribution density" may be the number of air channels 1141 contained in a unit area in the cross section; or "distribution density" may be characterized as the volume occupied by the air channels 1141, for example, the distribution density of the air channels 1141 in the central region may be characterized as the volume of the air channels 1141 in the central region.

[0094] In some embodiments, the air channel 1141 has a relatively large diameter; for example, the diameter of the air channel 1141 ranges from 0.01 mm to 1.0 mm. In an optional embodiment, the diameter of the air channel 1141 ranges from 0.01 to 0.5 mm, thereby allowing air to flow smoothly.

[0095] In some embodiments, the cross-sectional area or diameter of the air channel 1141 is basically constant and the same along the axial direction; or in some other variations, the cross-sectional area or diameter of the air channel 1141 varies, for example, the cross-sectional area or diameter of at least part of the air channel 1141 gradually decreases in the direction approaching the upper end.

[0096] In some embodiments, the base 1140 is dense. Accordingly, the air channel 1141 is formed by laser perforation, machining, etc. of the base 1140. For example, the method of machining to form the air channel 1141 may include piercing the base 1140 with a thin needle or a drill bit to form the air channel 1141.

[0097] exist Figure 2 and Figure 3 In the illustrated embodiment, the base 1140 has a length dimension of about 3-10 mm; and the heating element 1150 has a length of about 5-15 mm. Also, the heating element 1150 has a thickness of about 0.3-2 mm; and the heating element 1150 has a width of about 2-6 mm.

[0098] In some embodiments, the heating element 1150 and the base 1140 are both receptive materials, so that they can be placed in a changing magnetic field and generate heat by being penetrated by the magnetic field, thereby heating the aerosol generating substrate 1130. In addition, the heating element 1150 and the base 1140 also have a thermal conductivity greater than 80 W / mK; so that they can also generate heat by contact heat conduction when they are against a heat source, and then heat the aerosol generating substrate 1130. In some specific embodiments, the heating element 1150 and the base 1140 suitable for the above multiple heating methods are made of graphite material; so that they can have both receptivity and high thermal conductivity.

[0099] Figure 4 A schematic diagram of a base 1140a and a heating element 1150a connected or integrated in another embodiment is shown; in this embodiment, the heating element 1150a is in a rod or bar shape connected to the base 1140a. In addition, the heating element 1150a and the base 1140a are thermally conductive to each other.

[0100] In embodiments, the aerosol-generating substrate 1130 can be heated by hot air passing through the base 1140a, and can also be heated by the heating element 1150a, which is advantageous for enhancing the utilization of heat.

[0101] Or in some other embodiments, the base 1140 / 1140a is sensitive, for example, the base 1140 / 1140a is made of sensitive graphite material, or sensitive metal or alloy material. The base 1140 / 1140a can be penetrated by the changing magnetic field and generate heat to heat the air passing through the base 1140 / 1140a.

[0102] Or in some other embodiments, the heating element 1150 / 1150 a is sensitive, for example, the heating element 1150 / 1150 a is made of sensitive graphite material, or sensitive metal or alloy material. The base 1140 / 1140 a can be penetrated by the changing magnetic field and generate heat to heat the aerosol generating substrate 1130 .

[0103] Alternatively, in some specific embodiments, the heating element 1150 / 1150a and the base 1140 / 1140a include 65-80 wt% graphite and 20-35 wt% oxide; wherein the oxide is added in the form of a clay containing a mixture of silicon oxide, aluminum oxide, iron oxide and calcium oxide.

[0104] Figure 5 A schematic diagram of an aerosol generating system according to an embodiment is shown. Figure 5 In the illustration, the aerosol generating system comprises:

[0105] Aerosol generating articles 1000;

[0106] The aerosol generating device 100 is used to receive and heat the aerosol generating product 1000, so that the aerosol generating substrate 1130 in the aerosol generating product 1000 generates an aerosol for the user to inhale. Figure 5 As shown in , when the aerosol generating product 1000 is received in the aerosol generating device 100, the filter element 1110 of the aerosol generating product 1000 is exposed outside the aerosol generating device 100, which is beneficial for the user to inhale. And when the aerosol generating substrate 1130 of the aerosol generating product 1000 is consumed, the user can remove the aerosol generating product 1000 from the aerosol generating device 100 for replacement.

[0107] according to Figure 5 In the embodiment shown, the aerosol generating device 100 is generally configured as a flat cylinder. The structure of the aerosol generating device 100 includes:

[0108] The shell 10 is hollow inside, thereby forming an assembly space for necessary functional components such as electronic devices and heating devices; the shell 10 has a proximal end 110 and a distal end 120 opposite to each other along the length direction.

[0109] according to Figure 5 As shown, the aerosol generating device 100 further includes:

[0110] a receiving opening 111 located at the proximal end 110; in use, the aerosol generating article 1000 can be at least partially received into the housing 10 through the receiving opening 111, or removed from the housing 10 through the receiving opening 111;

[0111] The wall 20 at least partially surrounds or defines a chamber; the chamber is used to receive at least a portion of the aerosol generating article 1000 extending into the housing 10 through the receiving opening 111;

[0112] The air channel 150 is located between the chamber and the air inlet 121; and in use, the air channel 150 provides a channel path from the air inlet 121 into the chamber / aerosol generating article 1000, such as Figure 5 As shown by the arrow R11.

[0113] In some optional embodiments, the wall 20 is tubular and the wall 20 is not removable or fixed and movable in the housing 10 .

[0114] according to Figure 5 As shown, the aerosol generating device 100 further includes:

[0115] A battery cell 130 for power supply; optionally, the battery cell 130 is a rechargeable DC battery cell 130 and can be charged by connecting to an external power source;

[0116] The circuit board 140 is provided with a circuit.

[0117] according to Figure 5 As shown, the aerosol generating device 100 further includes:

[0118] The resistance heater 30 at least partially heats the air passing through the resistance heater 30 during inhalation, and heats the aerosol generating article 1000 with the heated air.

[0119] Specifically according to Figure 5 As shown, the resistance heater 30 is positioned in the wall 20 and arranged away from the receiving port 111. Moreover, the resistance heater 30 is positioned between the air channel 150 and the chamber; and the resistance heater 30 is positioned between the wall 20 and the air channel 150; and then the resistance heater 30 heats the air entering the chamber through the air channel 150 during the inhalation, and then outputs the heated hot air to the aerosol generating article 1000.

[0120] according to Figure 5 As shown, when the aerosol-generating article 1000 is received within the wall 20 , the upstream end 1100 of the aerosol-generating article 1000 abuts against the resistive heater 30 to form a stop.

[0121] according to Figure 5 and Figure 6 As shown, the resistance heater 30 is basically configured to be in a columnar shape, for example, the resistance heater 30 is in a cylindrical shape; or in some other embodiments, the resistance heater 30 is in a square column or prism shape. For another example, the resistance heater 30 may be a honeycomb structure.

[0122] according to Figure 6 As shown, in this embodiment, the resistance heater 30 includes:

[0123] The resistive heating element 31 has a volume resistivity between 0.8×10 -5 ~9.6×10 -5 Ω·m; Optionally, the volume resistivity of the heating element 31 is between 1.5×10 -5 ~4.2×10 -5 Ω·m. In some embodiments, the resistive heating element 31 may be made of graphite, resistive metal or alloy, etc.

[0124] The heating element 31 is configured in a honeycomb shape; the heating element 31 is a porous body having micropores inside; further, in an embodiment, the micropores inside the heating element 31 can provide or define a passage for air to pass through the heating element 31 .

[0125] For example, Figure 6 As shown in the figure, the heating element 31 has a plurality of through holes 311 that pass through the heating element 31 in the axial direction, so as to provide a passage for air to pass through the heating element 31. The air is heated when passing through the heating element 31, and then enters the aerosol generating article 1000. In some embodiments, the ratio of the total surface area to the volume of the heating element 31 is at least 1.2:1.

[0126] according to Figure 6 As shown, in this embodiment, the resistance heater 30 further includes:

[0127] A first electrode 32 and a second electrode 33 are provided for conducting an electric current on the heating element 31 .

[0128] In an embodiment, the first electrode 32 is conductively connected to the heating element 31 near an upper end of the heating element 31 ; and the second electrode 33 is conductively connected to the heating element 31 near a lower end of the heating element 31 .

[0129] In some embodiments, the first electrode 32 and / or the second electrode 33 are annular in shape. In some other variations, the first electrode 32 and / or the second electrode 33 include at least one of an electrode ring, an electrode cap, an electrode sheet, a track electrode or an electrode coating. In some embodiments, the first electrode 32 and / or the second electrode 33 are made of a metal or alloy with low resistivity. For example, the first electrode 32 and / or the second electrode 33 include gold, silver, copper or an alloy containing at least one of them. In an embodiment, the first electrode 32 and the second electrode 33 are arranged at intervals along the axial direction of the heating element 31. In an embodiment, the current is guided on the heating element 31 through the first electrode 32 and the second electrode 33, so that the heating element 31 forms resistive Joule heat, thereby heating the air passing through the through hole 311. In an embodiment, the heating element 31 having the above shape and size, after the first electrode 32 and the second electrode 33 are connected to the circuit, has an equivalent resistance of approximately 200 to 300 mΩ.

[0130] exist Figure 6In the illustrated embodiment, the first electrode 32 is electrically connected to the circuit board 140 by welding a first conductive lead 321; and the second electrode 33 is electrically connected to the circuit board 140 by welding a second conductive lead 331. The first conductive lead 321 and / or the second conductive lead 331 include gold, silver, copper or alloys thereof. Alternatively, in some other embodiments, the first conductive lead 321 and / or the second conductive lead 331 are copper wires with a nickel layer electroplated or sprayed or coated on the surface.

[0131] Or in some other embodiments, the surface of the first conductive lead 321 and / or the second conductive lead 331 is also sprayed or coated with an insulating layer; for example, the first conductive lead 321 and / or the second conductive lead 331 is an enameled wire with an organic insulating layer.

[0132] In suction, Figure 5 As shown by the arrow R11, the air is delivered to the resistance heater 30 via the air channel 150, and after passing through the through hole 311 of the resistance heater 30 to be heated, it enters the aerosol generating article 1000. The hot air entering the aerosol generating article 1000 from the upstream end 1100 enters the aerosol generating substrate 1130 via the air channel 1141 of the base 1140 to heat the aerosol generating substrate 1130 to generate aerosol. In addition, the heating element 1150 generates heat by absorbing the heat of the base 1140, and heats the aerosol generating substrate 1130 through heat transfer.

[0133] according to Figure 5 In the embodiment shown in , the diameter or cross-sectional area of ​​the through hole 311 of the resistive heater 30 is larger than the diameter or cross-sectional area of ​​the air channel 1141 of the base 1140. Thus, when the aerosol generating article 1000 is received in the chamber, the port of the through hole 311 of the resistive heater 30 is opposite to the port of at least 50% of the air channel 1141 of the base 1140, which is beneficial for hot air to pass through them smoothly and form convection.

[0134] In some preferred embodiments, the base 1140 is in contact with or against the resistive heater 30 when the aerosol-generating article 1000 is received in the chamber so as to be thermally conductive to each other.

[0135] or Figure 7 A schematic diagram of a resistance heater 30a of another variant embodiment is shown. In this embodiment, the resistance heater 30a includes:

[0136] Porous substrate 31a;

[0137] A resistive heating element 32a surrounds or encloses the porous matrix 31a.

[0138] The porous matrix 31a itself does not generate heat, and a plurality of through holes 311a are arranged in the porous matrix 31a. In the embodiment, the porous matrix 31a generates heat by receiving heat from the resistance heating element 32a, and in turn heats the air passing through the through holes 311a of the porous matrix 31a.

[0139] In some embodiments, the porous matrix 31a has a plurality of through holes 311a arranged in an orderly manner therein; the porous matrix 31a is a metal or alloy or graphite having a thermal conductivity greater than 80 W / mK.

[0140] In some embodiments, the resistive heating element 32a includes a resistive heating mesh, a resistive heating layer, etc. surrounding, wrapped, or wound around the porous matrix 31a.

[0141] In some other embodiments, the resistive heating element 32a is a resistive heating track or conductive line formed by printing, printing or deposition. In this embodiment, the resistive heating element 32a is formed by sintering or curing a track or line formed by printing, printing or deposition of a slurry including a resistive metal or alloy. In addition, the slurry including the resistive metal or alloy is formed by mixing raw material powder of the resistive metal or alloy with an organic solvent. The organic solvent generally includes, for example, water, alcohol solvent, etc. In addition, the resistive heating element 32a is connected to the circuit board 140 through a conductive pin 321a to guide current on the resistive heating element 32a.

[0142] Figure 8 A schematic diagram of an aerosol generating system of a further embodiment is shown, in which the aerosol generating system comprises:

[0143] Aerosol generating articles 1000;

[0144] The aerosol generating device 100a is used to receive and heat the aerosol generating product 1000, so that the aerosol generating substrate 1130 in the aerosol generating product 1000 generates aerosol for the user to inhale.

[0145] exist Figure 8 In the illustrated embodiment, the aerosol generating device 100a comprises:

[0146] The wall 20a at least partially surrounds or defines a chamber; the chamber is for receiving at least a portion of the aerosol generating article 1000 extending into the housing 10a through the receiving opening 111a;

[0147] The resistance heater 30a at least partially heats the air passing through the resistance heater 30a during inhalation, and heats the aerosol generating article 1000 with the heated hot air.

[0148] Specifically according to Figure 8 As shown, the resistance heater 30a is positioned in the wall 20a and arranged away from the receiving port 111a. Moreover, the resistance heater 30 is positioned between the air channel 150 and the chamber; and the resistance heater 30a is positioned between the wall 20a and the air channel 150a; and the resistance heater 30a heats the air entering the chamber through the air channel 150a during the inhalation, and then outputs the heated hot air to the aerosol generating article 1000.

[0149] exist Figure 8 In the embodiment of the present invention, the resistance heater 30a is connected to the circuit board 140a and is powered by the circuit board 140a to generate heat through resistive Joule heat.

[0150] exist Figure 8 In the embodiment of the invention, the aerosol generating device 100a further comprises:

[0151] The inducing element can induce one of the heating element 1150 and the base 1140 of the aerosol generating article 100 to generate heat autonomously and the other to generate heat through heat conduction; or, the inducing element can induce both the heating element 1150 and the base 1140 of the aerosol generating article 100 to generate heat autonomously. Autonomous heating can be understood as a component generating heat mainly by itself, rather than receiving heat from other components by heat conduction.

[0152] exist Figure 8 In the illustrated embodiment, the induction element includes an induction coil 40a, which induces the heating element 1150 and the base 1140 to generate heat through a magnetic field. Figure 8 In the embodiment, the induction coil 40a surrounds and encloses both the heating element 1150 and the base 1140 of the aerosol generating article 100. Alternatively, in some other variations, the induction element, such as the induction coil 40a, may only surround or enclose one of the heating element 1150 and the base 1140, while avoiding the other, thereby inducing only one of them to generate heat autonomously, and causing the other to generate heat through heat conduction.

[0153] The induction coil 40a is arranged around the wall 20a; and the induction coil 40a includes a first portion 41a and a second portion 42a arranged in sequence along the longitudinal direction. The induction coil 40a is electrically connected to the circuit board 140a, so that the circuit board 140a can provide the induction coil 40a with an alternating current to generate a changing magnetic field.

[0154] When the aerosol generating article 1000 is received in the chamber defined in the wall 20a, the first portion 41a of the induction coil 40a is arranged around the heating element 1150 of the aerosol generating article 100, and the second portion 42a of the induction coil 40a is arranged around the base 1140 of the aerosol generating article 100. Thus, when the aerosol generating article 1000 is received in the chamber defined in the wall 20a, the heating element 1150 can be penetrated by the magnetic field generated by the first portion 41a of the induction coil 40a to generate heat, and the base 1140 can be penetrated by the magnetic field generated by the second portion 42a of the induction coil 40a to generate heat.

[0155] The base 1140 can generate heat under the induction of the magnetic field generated by the induction coil 40a, thereby at least partially heating the hot air delivered by the resistance heater 30a and then outputting it to the aerosol generating substrate 1130, thereby partially heating the aerosol generating substrate 1130 to generate aerosol. In addition, the heating element 1150 can also generate heat under the induction of the magnetic field generated by the induction coil 40a, thereby heating the aerosol generating substrate 1130 to generate aerosol.

[0156] exist Figure 8 In the illustrated embodiment, the induction coil 40a is avoided from the resistance heater 30a.

[0157] Fig. 9 A schematic diagram of an aerosol generating system of yet another embodiment is shown; in this embodiment, an aerosol generating device 100b comprises:

[0158] The induction coil 40b is arranged around the wall 20b; and the induction coil 40b includes a first portion 41b, a second portion 42b and a third portion 43b arranged in sequence along the longitudinal direction; the induction coil 40b is electrically connected to the circuit board 140b, so that the induction coil 40b can be provided with an alternating current by the circuit board 140b to generate a changing magnetic field;

[0159] The induction heater 30b is at least partially surrounded by the third portion 43b of the induction coil 40b; so that the induction heater 30b can be penetrated by the magnetic field generated by the third portion 43b of the induction coil 40b and generate heat; and similarly, a plurality of through holes penetrating along the axial direction are arranged in the induction heater 30b; so as to provide a channel for the air delivered from the air channel 150b to pass through the induction heater 30b and be heated.

[0160] When the aerosol generating article 1000 is received in the chamber defined in the wall 20b, the heating element 1150 can be penetrated by the magnetic field generated by the first part 41b of the induction coil 40b and heated, and the base 1140 can be penetrated by the magnetic field generated by the second part 42b of the induction coil 40b and heated.

[0161] Or according to Figure 1and Figure 2 As shown, another embodiment of the present application also provides an aerosol generating product 1000, comprising:

[0162] Aerosol-generating substrate 1130, cooling element 1120 and filter element 1110. These elements are arranged sequentially from upstream to downstream and are limited by an outer wrapper 1160 to form an aerosol-generating article 1000;

[0163] A heating element for heating the aerosol generating substrate 1130; the heating element is configured in a T-shape and comprises:

[0164] a base portion 1140 , located upstream of the aerosol generating substrate 1130 ;

[0165] An elongated extension portion 1150 extends downstream from the base portion 1140 into the aerosol generating substrate 1130 .

[0166] And, the heating element including the base portion 1140 and the extension portion 1150 is made of a carbon material. The carbon material is a material mainly containing carbon elements, such as at least one of graphite, graphene, carbon fiber, carbon nanotube, carbon black, activated carbon, etc.

[0167] The base portion 1140 and / or the extension portion 1150 can generate heat by itself by being induced, or by receiving heat transferred by heat conduction.

[0168] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present application.

Claims

1. An aerosol generating article comprising: an aerosol generating substrate configured to generate an aerosol when heated; a filter element disposed downstream of the aerosol generating substrate; It is characterized by further comprising: a base disposed upstream of the aerosol generating substrate; a heating element extending from the base into the aerosol generating substrate; The base and / or the heating element are arranged to generate heat by themselves and / or to receive heat by heat conduction, thereby heating the aerosol generating substrate.

2. The aerosol-generating article according to claim 1, wherein The base is airflow permeable.

3. An aerosol generating article according to claim 1 or 2, characterized in that The base defines a plurality of air channels extending axially therethrough and is configured such that air is heated when passing through the air channels and then delivered to the aerosol generating substrate, thereby heating the aerosol generating substrate.

4. An aerosol generating article according to claim 1 or 2, characterized in that The thermal conductivity of the base and / or the heating element is greater than 80 W / mK.

5. An aerosol generating article according to claim 1 or 2, characterized in that The base and / or the heating element can generate heat autonomously by being penetrated by a varying magnetic field.

6. An aerosol generating article according to claim 1 or 2, characterized in that The susceptor and / or the heating element comprise graphite.

7. An aerosol generating article according to claim 1 or 2, characterized in that The base and the heating element are connected as one body and are heat-conducting to each other.

8. An aerosol generating article according to claim 1 or 2, characterized in that The heating element is arranged in a sheet shape, a rod shape or a pin shape.

9. An aerosol generating article according to claim 1 or 2, characterized in that Also includes: a cooling element, arranged between the aerosol generating substrate and the filter element, for cooling the aerosol delivered downstream from the aerosol generating substrate; a cooling cavity is defined in the cooling element; The heating element is longitudinally aligned with the cooling cavity.

10. An aerosol generating system, characterized in that: include: An aerosol-generating article as claimed in any one of claims 1 to 9; as well as, An aerosol generating device comprising: a chamber for receiving the aerosol-generating article; an inducing element for inducing one or both of the heating element and the base to generate heat autonomously; and / or a heater configured to transfer heat to the base to cause the base to generate heat.

11. An aerosol generating system according to claim 10, characterized in that When the aerosol generating article is received in the chamber, the heater abuts against or contacts the base to form heat conduction, and then transfers heat to the base in a heat conduction manner to make the base generate heat.

12. An aerosol generating system according to claim 10, characterized in that The heater is provided with a plurality of through holes arranged in a predetermined direction; in use, air at least partially passes through the through holes and is heated in the through holes before being output to the base of the aerosol generating product, so that the base generates heat by receiving the heat of the hot air.

13. An aerosol generating system according to any one of claims 10 to 12, characterized in that The inducing elements include: an induction coil disposed around the chamber for generating a changing magnetic field; when the aerosol-generating article is received in the chamber, the induction coil surrounds only one of the heating element and the base and avoids the other to induce autonomous heating of only one of them; Alternatively, an induction coil is arranged around the chamber to generate a changing magnetic field; when the aerosol generating product is received in the chamber, the induction coil simultaneously surrounds or surrounds the heating element and the base to simultaneously induce autonomous heating of the heating element and the base.

14. An aerosol generating system according to any one of claims 10 to 12, characterized in that The inducing elements include: an induction coil, arranged around the chamber, for generating a changing magnetic field; the induction coil comprises at least a first part and a second part arranged in sequence along the longitudinal direction; When the aerosol-generating article is received within the chamber, a first portion of the induction coil is disposed around at least a portion of the heating element, and a second portion of the induction coil is disposed around at least a portion of the base.

15. An aerosol generating system according to claim 14, characterized in that The heater is an induction heater that generates heat when penetrated by a changing magnetic field; The induction coil also includes: The third portion surrounds at least a portion of the heater to induce the heater to generate heat.

16. An aerosol generating device, configured to heat an aerosol generating article to generate an aerosol; characterized in that: include: a chamber for receiving the aerosol generating article; a receiving opening through which an aerosol-generating article can be received into or removed from the chamber in use; A heater is arranged away from the receiving port; a plurality of through holes are arranged in the heater; in use, air at least partially passes through the through holes and is heated by the heater in the through holes and then output to the aerosol generating product; An induction coil is disposed around at least a portion of the chamber for inducing the induction heating element to heat the aerosol-generating article.

17. An aerosol generating article, characterized in that include: an aerosol generating substrate configured to generate an aerosol when heated; a filter element disposed downstream of the aerosol generating substrate; A heating element of carbon material for heating the aerosol generating substrate; The heating element comprises: a base portion disposed upstream of the aerosol generating substrate; An extension portion extends downstream from the base portion into the aerosol generating substrate.

18. An aerosol-generating article according to claim 17, wherein The heating element has a T-shape.

19. An aerosol generating system, characterized in that: include: An aerosol generating article as claimed in claim 17 or 18; as well as, An aerosol generating device comprising: a chamber for receiving the aerosol-generating article; an inducing element for inducing autonomous heating of one or both of the base portion and the extension portion of the heating element; and / or a heater configured to transfer heat to the base portion to cause the base to heat up.

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