Aerosol generating device and heating mechanism for aerosol generating device

Abstract

The utility model provides an aerial fog generating device and a heating mechanism for the aerial fog generating device. The aerosol generating device includes: a chamber; a tubular heater at least partially surrounding or defining the chamber; the heater is provided with a first end and a second end which are opposite in the longitudinal direction; the first supporting element surrounds one part of the heater, is combined with the first end of the heater and is used for supporting the heater at the first end; the first supporting element is tightly connected with the heater, and the first supporting element and the heater are in airtight sealing; and / or a second supporting element which surrounds a part of the heater, is combined with the second end of the heater, and is used for supporting the heater at the second end; the first supporting element is fixedly connected with the heater, and the first supporting element and the heater are sealed in an airtight mode. According to the aerosol generating device, the two ends of the heater are directly combined with the supporting element for supporting, and the supporting element and the heater are connected in an airtight sealing mode so as to prevent air from entering the cavity from the space between the supporting element and the heater.

Description

Technical Field

[0001] This application relates to the technical field of heat-not-burn aerosol generation, and particularly to an aerosol generating device and a heating mechanism for an aerosol generating device. Background Art

[0002] During use, tobacco products (such as cigarettes, cigars, etc.) burn tobacco to produce tobacco smoke. People have attempted to replace these tobacco-burning products by creating products that release compounds without burning.

[0003] Examples of such products are heating devices that release compounds by heating rather than burning materials. For example, the material can be tobacco or other non-tobacco products, which may or may not contain nicotine. Known heating devices radiate infrared rays from the outside through a tubular infrared heating element to heat the tobacco or non-tobacco product; and annular support elements are respectively arranged at both ends of the tubular infrared heater to support and hold the infrared heater from both ends; a sealing ring such as an O-ring is used to seal between the support element and the infrared heater. Summary of the Utility Model

[0004] An embodiment of the present application provides an aerosol generating device configured to heat an aerosol generating article to generate an aerosol; comprising:

[0005] A chamber for receiving the aerosol generating article;

[0006] A tubular heater that at least partially surrounds or defines the chamber for heating the aerosol generating article received in the chamber; the heater has a first end and a second end facing away from each other longitudinally;

[0007] A first support element that surrounds a part of the heater and is coupled to the first end of the heater, configured to provide support for the heater at the first end; the first support element is tightly connected to the heater and is hermetically sealed with the heater to prevent air from entering the chamber between them;

[0008] And / or, a second support element that surrounds a part of the heater and is coupled to the second end of the heater, configured to provide support for the heater at the second end; the first support element is tightly connected to the heater and is hermetically sealed with the heater to prevent air from entering the chamber between them.

[0009] In some embodiments, the heater is longitudinally held between the first support element and the second support element.

[0010] In some embodiments, the heater includes:

[0011] A substantially tubular base body, arranged to extend between the first end and the second end;

[0012] A heating element, formed or integrated on the base body;

[0013] The heating element is spaced from the first end, thereby defining a first spaced region on the base body between the heating element and the first end; and / or, the heating element is spaced from the second end, thereby defining a second spaced region on the base body between the heating element and the second end.

[0014] In some embodiments, the first support element is connected to the base body in the first spaced region and avoids the heating element;

[0015] and / or, the second support element is connected to the base body in the second spaced region and avoids the heating element.

[0016] In some embodiments, there is no flexible sealing element between the first support element and the heater; and / or, there is no flexible sealing element between the second support element and the heater.

[0017] In some embodiments, the first support element and / or the second support element is configured to be in an annular shape.

[0018] In some embodiments, the first support element has a first middle hole and a first abutting step located in the first middle hole; the first end of the heater extends into the first middle hole and abuts against the first abutting step;

[0019] and / or, the second support element has a second middle hole and a second abutting step located in the second middle hole; the second end of the heater extends into the second middle hole and abuts against the second abutting step.

[0020] In some embodiments, there is no gap or clearance between the first support element and / or the second support element and the heater.

[0021] In some embodiments, the first support element and the heater are inseparable or non-removable; and / or, the second support element and the heater are inseparable or non-removable.

[0022] Another embodiment of the present application further provides a heating mechanism for an aerosol generating device, comprising:

[0023] A tubular heater having a first end and a second end facing away from each other in the longitudinal direction;

[0024] A first support element, surrounding a part of the heater and coupled to a first end of the heater, is configured to provide support to the heater at the first end; the first support element is tightly connected to the heater and is in an airtight seal with the heater;

[0025] And / or, a second support element, surrounding a part of the heater and coupled to a second end of the heater, is configured to provide support to the heater at the second end; the first support element is tightly connected to the heater and is in an airtight seal with the heater.

[0026] For the above aerosol generating device, both ends of the heater are supported by directly coupled support elements, and the support elements and the heater are connected in an airtight seal to prevent air from entering the chamber between them. Description of the Drawings

[0027] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise stated. The drawings in the figures do not constitute a scale limitation.

[0028] Figure 1 is a schematic diagram of an aerosol generating device provided by an embodiment;

[0029] Figure 2 is Figure 1 a cross-sectional schematic diagram of one perspective of the aerosol generating device in;

[0030] Figure 3 is Figure 2 a cross-sectional schematic diagram of the aerosol generating device in for receiving an aerosol-generating article;

[0031] Figure 4 is Figure 2 a schematic structural diagram of one perspective of the heating mechanism in;

[0032] Figure 5 is Figure 4 an exploded schematic diagram of one perspective of the heating mechanism in;

[0033] Figure 6 is Figure 4 a cross-sectional schematic diagram of one perspective of the heating mechanism in. Detailed Description of the Embodiments

[0034] To facilitate understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments.

[0035] An embodiment of the present application provides an aerosol-generating article 1000, such as a cigarette, that is heated rather than burned, so that at least one component of the aerosol-generating article 1000 volatilizes or is released to form an aerosol for inhalation by a user. The aerosol-generating device 100 is used to generate the aerosol, such as Figure 1 as shown.

[0036] In an alternative embodiment, the aerosol-generating article 1000 preferably uses a tobacco-containing material that releases volatile compounds from a matrix when heated; or it can also be a non-tobacco material that is suitable for electrically heated smoking after heating. The aerosol-generating article 1000 preferably uses a solid matrix, which may include one or more of powders, granules, fragments, strips, ribbons, or flakes of vanilla leaves, tobacco leaves, homogenized tobacco, expanded tobacco, etc.; alternatively, the solid matrix may contain additional tobacco or non-tobacco volatile flavor compounds to be released when the matrix is heated.

[0037] According to Figures 1 to 3 as shown, when the aerosol-generating article 1000 is received in the aerosol-generating device 100, a part of it, such as a filter tip, is exposed outside the aerosol-generating device 100, which is beneficial for the user to inhale.

[0038] The structure of the aerosol-generating device 100 according to an embodiment of the present application can be seen in Figures 1 to 3 as shown. The overall shape of the aerosol-generating device 100 is generally constructed in a longitudinally elongated shape. The aerosol-generating device 100 includes:

[0039] A housing that substantially defines the outer surface of the aerosol-generating device 100, having a proximal end 110 and a distal end 120 that are opposite to each other in the longitudinal direction; in use, the proximal end 110 is the end that is close to the user for conveniently operating to receive the aerosol-generating article 1000 and inhale, and the distal end 120 is the end that is far from the user.

[0040] In some examples, the housing can be formed of a metal or alloy such as stainless steel or aluminum. Other suitable materials include various plastics, metal-plated plastics, ceramics, and the like.

[0041] According to Figures 1 to 3 as shown, the housing of the aerosol-generating device 100 includes:

[0042] A first housing 10, arranged close to the proximal end 110 in the longitudinal direction, and defining the proximal end 110 of the housing;

[0043] A second housing 20, arranged close to the distal end 120 in the longitudinal direction, and defining the distal end 120 of the housing; in the Figures 1 to 3 embodiment shown, both the first housing 10 and the second housing 20 are tubular or cylindrical in shape with an inner cavity; and the first housing 10 and the second housing 20 are substantially coaxially arranged.

[0044] According to Figures 1 to 3 as shown, the aerosol generating device 100 further comprises:

[0045] a battery cell 21 for power supply; the battery cell 21 is located within the second housing 20, or the battery cell 21 is arranged near the distal end 120; the battery cell 21 is substantially arranged along the longitudinal direction of the aerosol generating device 100;

[0046] a charging connector 121, such as a usb-type-C interface, etc., formed or arranged between the battery cell 21 and the distal end 120 for charging the battery cell 240;

[0047] a circuit board 23, such as a PCB board or an FPC board, etc., for controlling the battery cell 21 to supply power to the heating mechanism 30; in a specific embodiment, the circuit board 23 is substantially arranged along the longitudinal direction of the aerosol generating device 100.

[0048] In a preferred embodiment, the DC supply voltage provided by the battery cell 21 is in the range of about 2.5V to about 9.0V, and the number of amperes of the DC current that the battery cell 21 can provide is in the range of about 2.5A to about 20A. Usually, the battery cell 21 is a rechargeable battery. As an alternative, the battery cell 21 can be another form of charge storage device, such as a capacitor. The battery cell 21 may need to be recharged and can have a capacity that allows sufficient energy to be stored for one or more puffs; for example, the battery cell 21 can have sufficient capacity to allow continuous aerosol generation during a period of about six minutes or a multiple of six minutes. In another example, the battery cell 21 can have sufficient capacity to allow the heating of a predetermined number of aerosol generation articles 1000 to start.

[0049] According to Figures 2 to 3 as shown, the aerosol generating device 100 further comprises:

[0050] a bracket 22 made of a rigid material such as an organic polymer plastic or ceramic for supporting or holding or fixing the battery cell 21, the circuit board 23 and the heating mechanism.

[0051] Specifically in Figures 2 to 3 the bracket 22 has a support wall 221 located between the battery cell 21 and the proximal end 110. The support wall 221 is substantially perpendicular to the longitudinal direction of the aerosol generating device 100.

[0052] According to Figures 2 to 3 as shown, the aerosol generating device 100 further comprises:

[0053] a chamber 310 for receiving the aerosol generation article 1000;

[0054] A heating mechanism that at least partially surrounds or defines a chamber 310 and is configured to heat an aerosol-generating article 1000. After assembly, the heating mechanism is installed or disposed between a support wall 221 and a proximal end 110.

[0055] As shown in Figures 2 to 6 the heating mechanism includes:

[0056] A tubular heater 30 that at least partially surrounds or defines the chamber 310; when the aerosol-generating article 1000 is received within the chamber 310, the heater 30 surrounds and heats the aerosol-generating article 1000 from the outside, causing the aerosol-generating article 1000 to release various volatile compounds, and these volatile compounds are formed only through heating treatment; when the aerosol-generating article 1000 is received within the chamber 310, the heater 30 at least partially surrounds or encloses the aerosol-generating article 1000 and heats it from the outer periphery of the aerosol-generating article 1000.

[0057] As shown in Figures 2 to 6 in this embodiment, the heater 30 includes:

[0058] A first end 311 and a second end 312 that face away from each other longitudinally;

[0059] A tubular base 31 that extends from the first end 311 to the second end 312; wherein, the first end 311 is arranged towards or close to the proximal end 110;

[0060] At least one heating element 32 formed or disposed on the base 31.

[0061] In some embodiments, at least one heating element 32 is formed on the outer surface of the base 31 by deposition, spraying, printing, or wrapping, etc. Or in some other embodiments, at least one heating element 32 is formed on the inner surface of the base 31.

[0062] In some embodiments, the circumferential length or perimeter of the base 31 is greater than the longitudinal length of the base 31. In some embodiments, the longitudinal length of the base 31 does not exceed 15 mm or is less than 15 mm. In some embodiments, the base 31 may have a longitudinal length of approximately 10 mm to 15 mm and an inner diameter dimension of approximately 5.8 mm to 10 mm. In some specific embodiments, the base 31 may have a longitudinal length of 12 mm; the base 31 may have an inner diameter of 7.6 mm.

[0063] In some embodiments, at least one heating element 32 is closed in the circumferential direction of the heater 30; at least one heating element 32 is a closed ring. In some embodiments, the length of at least one heating element 32 is 8 - 12 mm.

[0064] In some embodiments, at least one heating element 32 is a coating or thin layer formed on a substrate 31 by deposition, spraying, printing, or the like. Or in some other embodiments, at least one heating element 32 is a thin film wrapped or bonded to the substrate 31. Or in some other alternative embodiments, at least one heating element 32 of the resistor may also be a heating film of a resistor wound or bonded on the substrate 31, etc.

[0065] In some embodiments, the thickness of at least one heating element 32 in the form of a resistive coating is preferably controllable between 10 μm and 300 μm. And in some embodiments, the manner in which at least one heating element 32 is formed on the surface of the tubular substrate 31 can be obtained by curing after spraying on the outer surface of the tubular substrate 31 by means of atmospheric plasma spraying.

[0066] In some embodiments, at least one heating element 32 is a resistive heating element; by guiding an electric current through at least one heating element 32, at least one heating element 32 can generate heat through resistive Joule heating, thereby heating the aerosol-generating article 1000. And, in some embodiments, at least one heating element 32 used for heating by generating resistive Joule heat may include graphite or a resistive metal or alloy; wherein, the metal or alloy is, for example, nickel-chromium alloy, nickel-iron alloy, platinum, tungsten, silver, aluminum, titanium, molybdenum, manganese, or an alloy containing them, etc. In some embodiments, at least one heating element 32 providing resistive heating may be an annular coating or thin layer formed on the outer surface of the substrate 31. In some other variant embodiments, at least one heating element 32 providing resistive heating may be a resistive track extending circuitously or in the form of a mesh grid formed on the outer surface of the substrate 31.

[0067] When applicable to at least one heating element 32 that heats by resistive heating as described above, the material of the substrate 31 is a material with good thermal conductivity, such as ceramics, glass, a metal or alloy with insulated surface such as anodized aluminum, aluminum alloy, copper alloy, stainless steel, etc. And in some embodiments, the thermal conductivity of the substrate 31 is at least 10 W / m·K, preferably at least 25 W / m·K; or in some embodiments, the thermal conductivity of the substrate 31 is greater than 100 W / m·K or higher. In some embodiments, the substrate 31 includes a metal with a high thermal conductivity coefficient as described above, such as aluminum, copper, titanium, or an alloy containing at least one of them, etc. In some embodiments, the wall thickness of the substrate 31 ranges from 0.1 to 0.5 mm; more specifically, for example, the wall thickness of the substrate 31 ranges from 0.15 to 0.2 mm.

[0068] In yet other embodiments, the at least one heating element 32 is an infrared emitting layer, such as an electro-induced infrared emitting layer. By supplying a DC voltage to the at least one heating element 32, the voltage can be driven to cause the at least one heating element 32 to radiate infrared light, thereby heating the aerosol-generating article 1000. For applications in which the at least one heating element 32 heats by radiating infrared light, the substrate 31 is made of an infrared-transmissive material, such as quartz, glass, or ceramic. In some embodiments, the at least one heating element 32 for radiating infrared light can be a coating made of a ceramic material, such as zirconium, Fe-Mn-Cu, tungsten, or transition metals and their oxides. For another example, in some embodiments, the at least one heating element 32 for radiating infrared light is composed of an oxide of at least one metal element, such as Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, or Zn. These metal oxides, when heated to an appropriate temperature, can radiate infrared light with a heating effect.

[0069] according to Figures 2 to 6 As shown, at least one heating element 32 is arranged to extend between the first end 311 and the second end 312. The at least one heating element 32 is spaced apart from the first end 311 and the second end 312. Furthermore, the outer surface of the substrate 31 is further defined as follows:

[0070] a first spacing region 313 located between the first end 311 and the at least one heating element 32;

[0071] The second spacing region 314 is located between the at least one heating element 32 and the second end 312 .

[0072] In some embodiments, the first spaced regions 313 and / or the second spaced regions 314 have substantially the same size along the longitudinal direction of the base 31. For example, in some optional embodiments, the first spaced regions 313 and / or the second spaced regions 314 have a length of approximately 0.2 to 3 mm; more specifically, for example, the first spaced regions 313 and / or the second spaced regions 314 have a length of approximately 0.5 to 1.5 mm.

[0073] according to Figures 2 to 6 As shown, the heater 30 further includes:

[0074] The first electrode element 315 and the second electrode element 316 are arranged at intervals on at least one heating element 32 for guiding current on at least one heating element 32. Specifically, the first electrode element 315 and the second electrode element 316 are circumferentially arranged at intervals and combined with at least one heating element 32, thereby guiding current in the circumferential direction of at least one heating element 32. In some embodiments, the first electrode element 315 and / or the second electrode element 316 are coatings formed of an electrode material with a low resistivity. Or in still other variant embodiments, the first electrode element 315 and / or the second electrode element 316 can also be replaced with thinner sheet electrodes formed on the heater 30 by welding or being closely attached. In some alternative embodiments, the material of the first electrode element 315 and / or the second electrode element 316 is gold, silver, copper with a low resistivity or their alloys. According to Figures 2 to 6 As shown, the first electrode element 315 and the second electrode element 316 extend substantially longitudinally and are combined with at least one heating element 32. The first electrode element 315 and the second electrode element 316 are opposite to each other in the radial direction of the heater 30.

[0075] In use, the first electrode element 315 and the second electrode element 316 are respectively connected to the circuit board 23 by welding conductive leads, thereby connecting at least one heating element 32 to the circuit. In use, the circumferentially spaced first electrode element 315 and second electrode element 316 are used to guide current in the circumferential direction of at least one heating element 32.

[0076] Or in still other variant embodiments, the heater 30 can also include at least two or more heating elements 32; the at least two or more heating elements 32 are arranged at intervals along the longitudinal direction of the heater 30, so as to respectively heat different parts of the aerosol generating article 1000, such as so-called segmented heating.

[0077] In an embodiment, the chamber 310 can have opposite open ends and a terminal end. Among them, the open end of the chamber 310 can be described as the end for the aerosol generating article 1000 to enter and be received in the chamber 310; the terminal end can be described as the end for the aerosol generating article 1000 to abut against. Or in some embodiments, the open end is close to the opening 111 or the proximal end 110. In some specific embodiments, the open end can be formed or defined by the first end 311 of the heater 30. Or in still other embodiments, the open end of the chamber 310 is defined by the opening 111.

[0078] According to Figures 2 to 6 As shown, the heating mechanism further includes: a first support element 40, combined with the first end 311 of the heater 30; the first support element 40 provides support for the heater 30 at the first end 311.

[0079] As shown in Figures 2 to 6 the heating mechanism further includes: a second support element 50, coupled to the second end 312 of the heater 30; the second support element 50 provides support to the heater 30 at the second end 312.

[0080] In some embodiments, the first support element 40 and / or the second support element 50 is made of an organic polymer plastic. In some embodiments, the first support element 40 and / or the second support element 50 can withstand a temperature of at least 300 °C. In some embodiments, the first support element 40 and / or the second support element 50 is rigid. In some specific embodiments, the first support element 40 and / or the second support element 50 is made of at least one organic polymer such as polyether ether ketone (PEEK), polycarbonate, polytetrafluoroethylene, polyimide, polyphenylene sulfide, or polysulfone resin.

[0081] As shown in Figures 2 to 6 the first support element 40 and / or the second support element 50 is configured to be in an annular shape. In some embodiments, the first end 311 of the heater 30 extends into the first support element 40; the second end 312 of the heater 30 extends into the second support element 50. Further, in an embodiment, the first support element 40 longitudinally abuts against the first end 311 of the heater 30 and partially surrounds or encircles the heater 30; the second support element 50 longitudinally abuts against the second end 312 of the heater 30 and partially surrounds or encircles the heater 30. In a specific embodiment, the first support element 40 at least partially surrounds the first spacer region 313. In a specific embodiment, the second support element 50 at least partially surrounds the second spacer region 314.

[0082] In some embodiments, the first support element 40 and / or the second support element 50 avoids at least one heating element 32 to reduce the heat conduction from at least one heating element 32 to the first support element 40 and / or the second support element 50.

[0083] As shown in Figures 2 to 6 the first support element 40 has a first middle hole 41; the first support element 40 has a first abutting step 42 located within the first middle hole 41. The first end 311 of the heater 30 extends into the first middle hole 41 and abuts against the first abutting step 42.

[0084] As shown in Figures 2 to 6 the second support element 50 has a second middle hole 51; the second support element 50 has a second abutting step 52 located within the second middle hole 51. The second end 312 of the heater 30 extends into the second middle hole 51 and abuts against the second abutting step 52.

[0085] As shown in Figures 2 to 6As shown, the first support element 40 is firmly connected to the heater 30 by welding and thus is fastened to the heater 30; in an embodiment, the welding is, for example, ultrasonic welding. In the ultrasonic welding of the first support element 40 and the heater 30, a part of the material of the first support element 40 is melted by ultrasonic waves and then coupled to the surface of the heater 30 and cooled and solidified, and then the first support element 40 is firmly connected to the heater 30, and an airtight seal is formed between them. In an embodiment, the first support element 40 and the heater 30 are inseparable or non-detachable. In an embodiment, the first support element 40 and the heater 30 are airtight; to prevent air from entering the chamber 310 and / or the heater 30 between them. There are no gaps or clearances between the first support element 40 and the heater 30.

[0086] According to Figures 2 to 6 As shown, the second support element 50 is firmly connected to the heater 30 by welding and thus is fastened to the heater 30. In the welding of the second support element 50 and the heater 30, a part of the material of the second support element 50 is melted and then coupled to the surface of the heater 30 and cooled and solidified, and then the second support element 50 is firmly connected to the heater 30, and an airtight seal is formed between them. In an embodiment, the second support element 50 and the heater 30 are inseparable or non-detachable. In an embodiment, the second support element 50 and the heater 30 are airtight; to prevent air from entering the chamber 310 and / or the heater 30 between them. There are no gaps or clearances between the second support element 50 and the heater 30.

[0087] In an embodiment, there is no flexible sealing element such as a silicone rubber sealing ring between the first support element 40 and the heater 30. There is no flexible sealing element such as a silicone rubber sealing ring between the second support element 50 and the heater 30.

[0088] Or in some other variant embodiments, the first support element 40 is formed by in-mold injection or molding of an organic polymer material around the first spaced region 313 of the heater 30, and thus is firmly connected to the heater 30 and airtight. Or in some other variant embodiments, the second support element 50 is formed by in-mold injection or molding of an organic polymer material around the second spaced region 314 of the heater 30, and thus is firmly connected to the heater 30 and airtight.

[0089] According to Figures 1 to 3 As shown, the first support element 40 is combined or connected to the first housing 10; and then after assembly, the first housing 10 combines with the first support element 40, and thus at least partially holds the first support element 40.

[0090] According to Figures 1 to 3As shown, after assembly, the first support element 40 is arranged at or near the proximal end 110. An opening 111 for inserting the aerosol-generating article 1000 into the chamber 310 is surrounded or defined by the first support element 40. And an inlet for air to enter the chamber 310 / heater 30 is provided by the second through-hole 51 of the second support element 50.

[0091] According to Figures 1 to 3 As shown, the second support element 50 is supported by the support wall 221 of the bracket 22. The second support element 50 is mounted and held on the support wall 221 of the bracket 22.

[0092] In some embodiments, the bracket 22 at least partially provides an air intake passage for air to enter the second through-hole 51 of the second support element 50 from outside the aerosol-generating device 100, as Figure 2 shown by the arrow R2 in

[0093] According to Figures 1 to 3 As shown, a groove 222 opposite to the second through-hole 51 of the second support element 50 is also arranged on the support wall 221 of the bracket 22. The groove 222 is used to receive and hold debris or aerosol condensate dropped from the aerosol-generating article 1000.

[0094] It should be noted that the description and drawings of the present application give preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Further, for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present application.

Claims

1. 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 tubular heater at least partially surrounding or defining the chamber for heating an aerosol-generating article received in the chamber; The heater has a first end and a second end facing each other in a longitudinal direction; a first support member surrounding a portion of the heater and coupled to a first end of the heater, configured to provide support for the heater at the first end; the first support member being securely connected to the heater and hermetically sealed to prevent air from entering the chamber; And / or, a second support element, surrounding a portion of the heater and coupled to a second end of the heater, is configured to provide support to the heater at the second end; the second support element is tightly connected to the heater and is airtightly sealed with the heater to prevent air from entering the chamber from between them.

2. The aerosol generating device according to claim 1, wherein, The heater is longitudinally held between the first support element and the second support element.

3. The aerosol generating device according to claim 1 or 2, characterized in that, The heater comprises: a substantially tubular base extending between the first end and the second end; a heating element formed on or bonded to the substrate; The heating element is spaced apart from the first end, thereby defining a first spacing area between the heating element and the first end on the substrate; and / or the heating element is spaced apart from the second end, thereby defining a second spacing area between the heating element and the second end on the substrate.

4. The aerosol generating device according to claim 3, wherein, The first supporting element is connected to the base body in the first spacing area and avoids the heating element; And / or, the second supporting element is connected to the base body in the second spacing area and avoids the heating element.

5. The aerosol generating device according to claim 1 or 2, characterized in that, There is no flexible sealing element between the first supporting element and the heater; and / or there is no flexible sealing element between the second supporting element and the heater.

6. The aerosol generating device according to claim 1 or 2, characterized in that, The first supporting element and / or the second supporting element is configured to have an annular shape.

7. The aerosol generating device according to claim 6, wherein, The first supporting element has a first central hole and a first abutting step located in the first central hole; the first end of the heater extends into the first central hole and abuts against the first abutting step; And / or, the second supporting element has a second central hole and a second abutting step located in the second central hole; the second end of the heater extends into the second central hole and abuts against the second abutting step.

8. The aerosol generating device according to claim 1 or 2, characterized in that, There is no gap or clearance between the first supporting element and / or the second supporting element and the heater.

9. The aerosol generating device according to claim 1 or 2, characterized in that, The first supporting element and the heater are inseparable or non-detachable; and / or the second supporting element and the heater are inseparable or non-detachable.

10. A heating mechanism for an aerosol generating device, characterized in that, include: a tubular heater having a first end and a second end facing each other in a longitudinal direction; a first support element surrounding a portion of the heater and coupled to a first end of the heater, configured to provide support for the heater at the first end; the first support element being securely connected to the heater and hermetically sealed therewith; And / or, a second support element, which surrounds a part of the heater and is coupled to a second end of the heater, is configured to provide support to the heater at the second end; the second support element is tightly connected to the heater and is hermetically sealed with respect to the heater.

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