Aerosol generating device

Abstract

The invention provides an aerial fog generating device. A cavity for receiving smokable materials and a holding mechanism for holding the smokable materials in the cavity in the radial direction are arranged in a shell. Meanwhile, an infrared emitter located outside the cavity in the radial direction is further arranged so as to radiate infrared rays to heat the smokable material; the distance between the inner surface of the infrared emitter and the central axis of the cavity is larger than the shortest distance between the holding mechanism and the central axis of the cavity, so that when the distance between the smokable material and the inner surface of the infrared emitter is kept to be 0-3 mm, the infrared emitter is prevented from heating the smokable material in a contact conduction mode. By adopting the aerial fog generating device, when the smokable material is received in the cavity, the smokable material is not in contact with the inner surface of the infrared transmitter, and a distance is kept between the smokable material and the inner surface of the infrared transmitter, so that the phenomenon that outer packaging paper of the smokable material is gelatinized due to contact transfer of heat is avoided, and premature or excessive carbonization under the dual action of heat conduction and infrared radiation is eliminated.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of heat-not-burn smoking articles, and in particular to 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 compounds by heating rather than burning materials. For example, the material may be tobacco or other non-tobacco products that may or may not contain nicotine. As another example, there is a heating device that heats the tobacco product circumferentially to release compounds to generate an aerosol. For example, patent No. 201780028361.9, which is a known technology, uses a tubular resistor or film heater to heat the tobacco product received in the tubular hollow, and in order to ensure the heating effect during the heating process, the tobacco product is usually basically tightly fitted with the tubular hollow of the heater with a small gap. In the above implementation, the outer packaging paper of the tobacco product will gelatinize and produce a burnt taste, affecting the smoking experience. Summary of the invention

[0004] In order to solve the problem in the prior art that the sticky substances in the outer packaging paper of tobacco products affect the smoking experience, an embodiment of the present invention provides an aerosol generating device using an infrared heating method to reduce the generation of sticky substances.

[0005] Based on the above, the present invention proposes an aerosol generating device for heating a smokeable material to generate an aerosol for inhalation, comprising a housing; the housing is provided with:

[0006] a chamber for receiving a smokeable material;

[0007] an infrared emitter, which is configured in a tubular shape extending in the axial direction of the chamber and surrounding the chamber, and can heat the smokeable material received in the chamber by radiating infrared rays to the smokeable material;

[0008] a holding mechanism configured to be arranged around the chamber and used to provide support for the smokeable material received in the chamber in a radial direction of the chamber so as to prevent the smokeable material from moving in a radial direction of the chamber;

[0009] Along the radial direction of the chamber, the distance between the inner surface of the infrared emitter and the central axis of the chamber is greater than the shortest distance between the retaining mechanism and the central axis of the chamber, so that when the smokeable material is received in the chamber, a certain spacing space is maintained between the inner surface of the infrared emitter.

[0010] In a preferred embodiment, the distance between the inner surface of the infrared emitter and the central axis of the chamber is 0.5 mm to 10 mm greater than the shortest distance between the holding mechanism and the central axis of the chamber.

[0011] In a preferred embodiment, a first support member is further provided in the shell and extends at least partially in a radial direction into the chamber, and is configured to abut against the first support member in an axial direction when the smokeable material is received in the chamber, thereby providing a stop for the smokeable material along the axial direction of the chamber.

[0012] In a preferred embodiment, the holding mechanism comprises an extension portion extending from the first support member into the infrared emitter, and the extension portion is arranged in a ring shape around the chamber;

[0013] The inner diameter of the extension portion is smaller than that of the infrared emitter, and is configured to abut against the outer surface of the smokeable material received in the chamber in a radial direction, thereby preventing the smokeable material from moving in the radial direction of the chamber and forming the separation space.

[0014] In a preferred embodiment, at least a portion of the inner surface of the extension portion is an inclined surface inclined radially inward, and the smokeable material abuts against the first support member at least partially under the guidance of the inner surface of the extension portion.

[0015] In a preferred embodiment, the infrared emitter includes a first end and a second end opposite to each other along a length direction;

[0016] The holding mechanism includes a second support member that supports or holds the pair of infrared emitters at the first end or the second end; the second support member is in an annular shape that is coaxially arranged with the infrared emitter; the inner diameter of the second support member is smaller than the inner diameter of the infrared emitter, and is configured to abut against the outer surface of the smokeable material received in the chamber in a radial direction, thereby preventing the smokeable material from moving radially along the chamber and forming the separation space.

[0017] In a preferred embodiment, the infrared emitter includes a first end and a second end opposite to each other along a length direction;

[0018] A second support member is provided in the housing to support or hold the infrared emitter at the first end or the second end;

[0019] The retaining mechanism includes a plurality of ridges extending from the second support member along the radial direction of the chamber, and the ridges are configured to be arranged around the central axis of the chamber; the shortest distance between the ridges and the central axis of the chamber along the radial direction of the chamber is smaller than the distance between the inner surface of the infrared emitter and the central axis of the chamber, and the ridges are configured to abut against the outer surface of the smokeable material received in the chamber along the radial direction, thereby preventing the smokeable material from moving along the radial direction of the chamber and forming the separation space.

[0020] In a preferred embodiment, the housing comprises a proximal end and a distal end opposite to each other in the length direction; wherein the proximal end is provided with a receiving hole through which the smokeable material can be received in the chamber or removed from the chamber; and the distal end is provided with an air inlet hole opposite to the receiving hole;

[0021] The first end of the infrared emitter is opposite to the receiving hole, and the second end is opposite to the air inlet hole; the second support member is configured to support or maintain the annular shape of the infrared emitter at the second end;

[0022] The housing is also provided with a tubular element between the air inlet and the second support member;

[0023] The hollow of the tubular element and the second support are arranged to define an air flow path from the air inlet to the chamber.

[0024] In a preferred embodiment, a tubular base extending along the axial direction of the chamber and surrounding the chamber is disposed in the housing;

[0025] The infrared emitter includes an infrared emitting coating formed on the outer surface of the tubular substrate;

[0026] The retaining mechanism includes a portion of the tubular base body with a reduced inner diameter, and the portion with a reduced inner diameter abuts against the outer surface of the smokeable material received in the chamber, thereby preventing the smokeable material from moving in the radial direction of the chamber and forming the separation space.

[0027] By adopting the above aerosol generating device, when the inhalable material is received in the chamber, it is not in contact with the inner surface of the infrared emitter and maintains a certain distance therefrom, so that during use, the inhalable material is heated substantially only by absorbing the energy of infrared rays, thereby avoiding the heat transfer between the infrared emitter and the inhalable material causing the outer packaging paper to become gelatinized and produce a burnt smell, and eliminating the premature or excessive carbonization of the aerosol-forming substrate in the inhalable material due to the dual effects of heat conduction and infrared radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] Figure 1 is a schematic diagram of an aerosol generating device in use according to an embodiment;

[0030] Figure 2 yes Figure 1 A schematic diagram of the aerosol generating device from another perspective;

[0031] Figure 3 yes Figure 1 A schematic diagram of the internal structure of the aerosol generating device;

[0032] Figure 4 yes Figure 3 A schematic cross-sectional view of the aerosol generating device along the width direction;

[0033] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure of the heating mechanism along the width direction;

[0034] Figure 6 yes Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of the heating mechanism;

[0035] Figure 7 yes Figure 4 Schematic diagram of the structure of the mid-infrared transmitter;

[0036] Figure 8 yes Figure 4 A schematic diagram of the cooperation between the suckable material and the upper bracket and the lower bracket;

[0037] Fig. 9 yes Figure 8 A three-dimensional cross-sectional view of the middle and upper bracket from one perspective;

[0038] Fig.10 yes Figure 8 A three-dimensional cross-sectional view of the middle and lower bracket from one perspective;

[0039] Fig.11 It is a cross-sectional schematic diagram of an infrared emitter according to yet another embodiment. DETAILED DESCRIPTION

[0040] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] One embodiment of the present invention provides an aerosol generating device that heats, rather than burns, a smokeable material such as a cigarette, thereby causing at least one component of the smokeable material to volatilize or release to form an aerosol for inhalation.

[0042] Based on a preferred implementation, the aerosol generating device heats the inhalable material by radiating far-infrared rays having a heating effect; for example, far-infrared rays of 3 μm to 15 μm. During use, when the wavelength of the infrared rays matches the absorption wavelength of the volatile components of the inhalable material, the energy of the infrared rays is easily absorbed by the inhalable material, and then the inhalable material is heated to volatilize at least one volatile component, thereby generating an aerosol for inhalation.

[0043] The structure of the aerosol generating device according to one embodiment of the present invention can be seen in Figure 1 to Figure 2 As shown, the overall appearance of the device is roughly constructed in the shape of a flat cylinder, and the external components of the aerosol generating device include:

[0044] The shell 10 is hollow inside, thereby forming an assembly space for necessary functional components such as infrared radiation; the shell 10 has a proximal end 110 and a distal end 120 opposite to each other along the length direction; wherein,

[0045] The proximal end 110 is provided with a receiving hole 111, through which the smokeable material A can be received in the housing 10 to be heated or removed from the housing 10;

[0046] The distal end 120 is provided with an air inlet hole 121 and a charging interface 122; the air inlet hole 121 is used to allow external air to enter the shell 10 during the inhalation process; the charging interface 122, such as a USB type-C interface, a Pin pin interface, etc., is used to charge the aerosol generating device after being connected to an external power source or an adapter.

[0047] For further details on the structure inside the housing 10, see Figure 3 and Figure 4 As shown, it includes a first compartment 130 and a second compartment 140 arranged in sequence along the width direction; wherein the first compartment 130 is an installation space for installing electronic components such as battery cells and circuit boards (not shown in the figure), and the second compartment 140 is an installation space for installing and maintaining a heating mechanism.

[0048] See also Figure 4 As shown in , the heating mechanism includes:

[0049] The infrared emitter 30 is disposed in the second compartment 140 along the length direction of the housing 10. Its three-dimensional structure can be seen in FIG. 7. The infrared emitter 30 includes:

[0050] The tubular substrate 31 is used as a rigid carrier and an object for containing the smokeable material A. In practice, the tubular substrate 31 can be made of a high-temperature resistant and infrared-transmissive material such as quartz glass, ceramics or mica; preferably, it is a transparent material, such as a high-temperature resistant material with an infrared transmittance of more than 95%. The inner space of the tubular substrate 31 forms a chamber 35 for containing and heating the smokeable material A;

[0051] The infrared emitting coating 32 formed on at least a portion of the outer surface of the tubular substrate 31 is an electrically induced infrared emitting coating that can generate heat by itself when powered on and radiate infrared rays that can be used to heat the smokeable material A, such as the above far infrared rays of 3 μm to 15 μm, to the smokeable material received in the chamber 35. When the wavelength of the infrared rays matches the absorption wavelength of the volatile components of the smokeable material A, the energy of the infrared rays is easily absorbed by the smokeable material A.

[0052] In general, the mid-infrared emission coating 32 may be a coating made of a ceramic material such as zirconium, or a Fe—Mn—Cu system, a tungsten system, or a transition metal and its oxide material.

[0053] In a preferred embodiment, the infrared emitting coating 32 is preferably composed of oxides of at least one metal element such as Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, etc. These metal oxides will radiate the above far infrared rays with heating effect when heated to an appropriate temperature; the thickness can be preferably controlled to be 30μm to 50μm; the method of forming the infrared emitting coating 32 on the surface of the substrate 31 can be to spray the oxides of the above metal elements on the outer surface of the substrate 31 by atmospheric plasma spraying and then solidify;

[0054] In other variant implementations, the infrared emission coating 32 may also be formed on the inner surface of the substrate 32 .

[0055] The infrared emitter 30 further includes a first conductive coating 33 and a second conductive coating 34 formed on at least a portion of the outer surface of the infrared emission coating 32 at opposite ends thereof; Figure 7 In the preferred embodiment shown, the first conductive coating 33 and the second conductive coating 34 are both annular in shape and in contact with the infrared emitting coating 32, and can be electrically connected to the positive and negative electrodes of the power supply, respectively, during use, so that the infrared emitting coating 32 is electrically heated and radiates infrared rays. The first conductive coating 33 and the second conductive coating 34 can be conductive coatings formed by dipping or coating, and can generally include silver, gold, palladium, platinum, copper, nickel, molybdenum, tungsten, niobium, or metals or alloys thereof.

[0056] exist Figure 4 and Figure 5In the embodiment shown, in order to prevent the outer packaging paper of the smokeable material A from being gelled, the inner diameter of the tubular base 31 is constructed to be larger than the outer diameter of the smokeable material A, so that when the smokeable material A is received in the chamber 35, it has no contact with the inner surface of the tubular base 31 and maintains a certain spacing space 50, so that in use, the smokeable material A is generally heated only by absorbing infrared energy, and the heat conduction of the tubular base 31 to the outer packaging paper of the smokeable material A is avoided, which causes the outer packaging paper to be gelled and produce a burnt smell, and can also eliminate the premature or excessive carbonization of the aerosol-forming substrate in the smokeable material A due to the dual effects of heat conduction and infrared radiation.

[0057] In practice, the size or thickness of the spacing space 50 in the radial direction is preferably controlled to be 0.5 mm to 10 mm, and more preferably the size or thickness of the spacing space 50 in the radial direction is controlled to be 3 to 5 mm, based on making the size and thickness of the shell 10 appropriate to the infrared radiation range.

[0058] See also Figure 4 and Figure 5 The heating mechanism also includes an insulating member 40 located outside the infrared emitter 30 in a radial direction. The insulating member 40 is tubular in shape and includes an inner tube wall 41 and an outer tube wall 43 arranged in sequence from the inside to the outside in the radial direction, and a central area 42 located between the inner tube wall 41 and the outer tube wall 43; in implementation, the inner tube wall 41 and the outer tube wall 43 can be made of a rigid material such as stainless steel, ceramic, PPEK, etc., and the pressure in the central area 42 is constructed to be lower than the pressure outside the insulating member 40, that is, it has or forms a certain vacuum degree to reduce the radial outward conduction of heat generated by the infrared emitter 30 during operation.

[0059] Of course, in practice, a certain distance is maintained between the inner tube wall 41 of the thermal insulation member 40 and the infrared emitter 30 to form an air medium layer 44, which can further promote thermal insulation through the low thermal conductivity of air.

[0060] See also Figure 4 In the embodiment shown, in practice, a tubular element 20 is further provided in the second compartment 140 in the longitudinal direction before the heating mechanism and the air inlet 122, and the tubular element 20 is used to connect the chamber 35 and the air inlet 122 with air flow during the suction process; see Figure 4 As shown by the middle arrow R, during the suction process, external air enters the housing 10 through the air inlet 122, and enters the chamber 35 through the internal hollow 21 of the tubular element 20, and is inhaled by the user through the smokeable material A.

[0061] See also Figure 4As shown, the inner diameter of the hollow space 21 of the tubular element 20 is not constant, but has a portion 211 that gradually decreases along the direction from the air inlet hole 122 to the chamber 35 .

[0062] See also Figures 4 to 6 As shown, in order to ensure the stable fixation of the infrared emitter 30 and the heat insulating member 40 in the housing 10, and to provide support for the smokeable material A, so that the smokeable material A is fixed in the radial direction of the chamber 35 and is not movable, so that the outer surface of the fixed smokeable material A and the inner surface of the infrared emitter 30 form and maintain a separation space 50; the housing 10 is also provided with an upper support member 60 and a lower support member 70; the upper support member 60 and the lower support member 70 are both roughly designed to have a hollow annular shape. Specifically,

[0063] The lower surface of the lower support member 70 is provided with an insertion groove 71, and the upper end of the tubular element 20 is inserted into the insertion groove 71, so that the lower support member 70 itself is stably supported and held in the housing 10; Figures 4 to 6 As shown, the insertion groove 71 is a cylindrical space coaxial with the hollow of the lower support member 70 and has a diameter larger than the hollow diameter of the lower support member 70 , so that the upper end of the tubular element 20 abuts in the insertion groove 71 .

[0064] Further in Figure 4 In the preferred embodiment shown, in order to ensure air tightness after the lower support member 70 is joined to the tubular element 20 , a sealing ring 22 made of a flexible material such as silicone or polyimide is provided in the gap between the tubular element 20 and the insertion groove 71 .

[0065] For the structure of the cooperation and support of the lower support member 70, the infrared emitter 30 and the heat insulating member 40, please refer to Figure 8 and Fig.10 As shown, the lower support member 70 has a first boss 74 and a second boss 76 arranged from inside to outside in the radial direction; the first boss 74 is used to provide abutment for the lower end of the infrared emitter 30, and the second boss 76 is used to provide abutment for the lower end of the heat insulating member 40. The lower support member 70 is also provided with an annular extension portion 72 that at least partially extends into the cavity 35 of the infrared emitter 30. The annular extension portion 72 is used to provide a spacing to prevent the outer surface of the smokeable material A from contacting the inner surface of the cavity 35 when the smokeable material A is received in the cavity 35, thereby forming the above-mentioned spacing space 50.

[0066] Of course, according to Figure 8 and Fig.10As shown, the annular extension 72 also has a third boss 77, the diameter of which is smaller than the outer diameter of the smokeable material A, so that the smokeable material A can abut against the third boss 77 to form a stop. At the same time, the inner surface of the annular extension 72 is arranged along an inclined surface inclined inwardly from top to bottom, which is used to provide guidance when the smokeable material A is inserted into the third boss 77 and abuts against it. Of course, see further Figure 4 As shown, the third boss 77 extends into the cavity 35 when installed.

[0067] Similarly, in Figure 8 and Fig.10 In the preferred embodiment shown, the lower support member 70 is also provided with a first guide portion 75 for providing guidance when the infrared emitter 30 is inserted and abutted against the first boss 74; and a second annular extension portion 72 for providing guidance and support for the insulation member 40 when it abuts against the second boss 76.

[0068] For further details on the structure of the upper support member 60, see Figure 8 and Fig. 9 As shown, the upper support member 60 is provided with a fourth boss 62 and a fifth boss 63 which respectively abut against the upper ends of the infrared emitter 30 and the insulation member 40; and the upper support member 60 is also provided with a plurality of ridges 61 located in the annular hollow, and it can be seen from the figure that the plurality of ridges 61 are arranged at circumferential intervals around the smokeable material A, and the ridges 61 are designed to be inclined from top to bottom, and are used to provide guidance during the insertion of the smokeable material A into the chamber 35, and to abut and clamp the outer surface of the smokeable material A to prevent the smokeable material A from moving radially along the chamber 35.

[0069] According to the above implementation, the structure for maintaining the smokeable material A in the chamber 35 in a stable radial direction can be realized by the ridges 61 provided on the inner surface of the upper support member 60 and the inner surface of the annular extension 72 of the lower support member 70, both of which can form abutment and clamping against the outer surface of the smokeable material A in the radial direction. Figure 5 As shown, the inner diameter of the annular extension portion 72 is smaller than the inner diameter of the infrared emitter 30, and the radial distance L2 between the ridge 61 and the central axis S of the chamber 35 is smaller than the distance L1 between the inner surface of the infrared emitter 30 and the central axis S of the chamber 35, so that the smokeable material A and the inner surface of the infrared emitter 30 can stably form and maintain a separation space 50 to avoid contact conduction.

[0070] Of course, in other similar implementations, additional or independently provided annular or clamping structures or components arranged around the outer surface of the smokeable material A may be used to implement the above holding function. Fig.11Another embodiment shown is formed by the inner wall of the tubular base 31a of the infrared emitter 30a; specifically,

[0071] See also Fig.11 , the embodiment includes a tubular substrate 31a, surrounding or forming a part of a space to form a chamber 35a for receiving the smokeable material A; the infrared emitter includes an infrared emitting coating 32a formed on the outer surface of the tubular substrate 31a; and the inner wall of the tubular substrate 31a is provided with a portion 311a that is bent into the chamber 35a to form a reduced inner diameter; the portion 311a with reduced inner diameter abuts against and clamps the smokeable material A, so as to form a stable holding structure for the smokeable material A in the chamber 35a along the radial direction; Fig.11 The infrared emitting coating 32a shown is located between the two parts 311a with reduced inner diameters in the axial direction; thus, the distance L2 between the part 311a with reduced inner diameter and the central axis S of the chamber 35a in the radial direction is smaller than the distance L1 between the inner surface part 312a opposite to the infrared emitting coating 32a and the central axis S, so that a separation space 50a is formed and maintained between the inner surface part 312a and the smokeable material A.

[0072] It should be noted that the preferred embodiments of the present invention are given in the specification and drawings of the present invention, but are not limited to the embodiments described in the specification. Furthermore, it is obvious to those skilled in the art that improvements or changes can be made 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 invention.

Claims

1. An aerosol generating device for heating a smokeable material to generate an aerosol for inhalation, comprising a housing; characterized in that: The housing is provided with: a chamber for receiving a smokeable material; an infrared emitter, which is configured to extend in the axial direction of the chamber and to form a tubular shape surrounding the chamber, and is capable of heating the smokeable material by radiating infrared rays to the smokeable material received in the chamber; The holding mechanism is configured to be arranged around the chamber and used to provide radial support for the smokeable material received in the chamber to prevent the smokeable material from moving radially along the chamber; along the radial direction of the chamber, the distance between the inner surface of the infrared emitter and the central axis of the chamber is greater than the shortest distance between the holding mechanism and the central axis of the chamber; when the smokeable material is received in the chamber, a spacing of 0 to 3 mm is maintained between the smokeable material and the inner surface of the infrared emitter, thereby forming a spacing space between the smokeable material and the inner surface of the infrared emitter.

2. The aerosol generating device according to claim 1, characterized in that When the smokeable material is received in the chamber, the spacing between it and the inner surface of the infrared emitter is less than 0.5 mm.

3. The aerosol generating device according to claim 1 or 2, characterized in that: The infrared transmitter comprises: a tubular substrate surrounding the chamber and defining an inner surface of the infrared emitter; An infrared emitting coating is formed on the outer surface of the tubular substrate.

4. The aerosol generating device according to claim 3, characterized in that The retaining mechanism includes a portion of the tubular base with a reduced inner diameter, and the portion with a reduced inner diameter abuts against the outer surface of the smokeable material received in the chamber, thereby preventing the smokeable material from moving radially along the chamber and forming a spacing space between the inner surface of the infrared emitter.

5. The aerosol generating device according to claim 3, characterized in that: The shell also has a first support member extending at least partially in the radial direction into the chamber, and is configured to abut against the first support member in the axial direction when the smokeable material is received in the chamber, thereby providing a stop for the smokeable material in the axial direction of the chamber.

6. The aerosol generating device according to claim 5, characterized in that The holding mechanism includes an extension portion extending from the first support member into the infrared emitter; the extension portion is arranged in a ring around the chamber; the inner diameter of the extension portion is smaller than the inner diameter of the infrared emitter, and can thus abut against the outer surface of the smokeable material received in the chamber to provide retention.

7. The aerosol generating device according to claim 6, characterized in that At least a portion of the inner surface of the extending portion is in the form of an inclined surface that is inclined radially inward, and the smokeable material is at least partially abutted against the first supporting member under the guidance of the inner surface of the extending portion.

8. The aerosol generating device according to claim 1 or 2, characterized in that: Also includes: A proximal end and a distal end opposite to each other in the length direction; wherein the proximal end is provided with a receiving hole through which the smokeable material can be received in the chamber or removed from the chamber; The infrared emitter includes a first end along the length direction facing or close to the proximal end; The holding mechanism includes a second support member that supports or holds the pair of infrared emitters at the first end; the second support member is in an annular shape that is coaxially arranged with the infrared emitters.

9. The aerosol generating device according to claim 8, characterized in that The second support member has a plurality of ridges extending along the radial direction of the chamber, and the ridges are configured to be arranged around the central axis of the chamber; the shortest distance between the ridges and the central axis of the chamber along the radial direction of the chamber is smaller than the distance between the inner surface of the infrared emitter and the central axis of the chamber.

10. The aerosol generating device according to claim 9, characterized in that The ribs are inclined to provide guidance when the smokeable material is received into the chamber.

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