Heated tobacco products

Abstract

An aerosol generating device (20) is provided, the aerosol generating device (20) comprising: a heating chamber (21) configured to receive a tobacco portion (12) including a first magnetic material (13), the heating chamber (21) including an inner wall and a base; a heating element configured to heat the tobacco portion (12) inserted into the heating chamber (21); and a second magnetic material (22) disposed on the inner wall of the heating chamber (21), the second magnetic material (22) being different from the heating element, such that in use, when the tobacco portion (12) is inserted into the heating chamber (21), the second magnetic material (22) is magnetically coupled to the first magnetic material. A system and a heated tobacco product are also provided.

Description

[Technical Field]

[0001] The present invention relates to a heated tobacco product for use with an aerosol generating device, the heated tobacco product comprising a first magnetic material that, in use, is inserted into a heating chamber of the aerosol generating device, the heating chamber comprising a second magnetic material arranged to magnetically couple to the first magnetic material and hold the heated tobacco product in a predetermined position. [Background technology]

[0002] Inhalers or aerosol generating devices, such as electronic cigarettes or vaping devices, are becoming more popular and generally heat or warm volatile materials to generate an aerosol for inhalation, as opposed to burning tobacco as in traditional tobacco products.

[0003] One type of volatile substance is a heated tobacco product. A heated tobacco product is a cylindrical tobacco unit consisting of a tobacco film, a hollow acetate tube, a polymer filter, and a mouthpiece. Most heated tobacco products are cylindrical, although other configurations are of course possible.

[0004] The heated tobacco product is inserted into an aerosol-generating device so that the tobacco material within the heated tobacco product can be heated, typically to a lower temperature than a conventional cigarette, to produce a nicotine-containing aerosol that can then be inhaled by a user.

[0005] The heated tobacco product is held in the aerosol generation device by friction or pressure between the heated tobacco product and the aerosol generation device. Specifically, the heated tobacco product is inserted into a heating chamber of the aerosol generation device, and the heating chamber is configured to hold the heated tobacco product by friction. Because the heated tobacco product shrinks during use, a tight fit between the chamber and the heated tobacco product is required when the heated tobacco product is initially inserted into the chamber.

[0006] The tight fit between the heating chamber and the heated tobacco product requires the user to apply significant force to the stick to ensure the tobacco portion of the heated tobacco product is properly positioned within the chamber for optimal heating, which can damage the heated tobacco product and / or cause inconvenience to the user.

[0007] Furthermore, when inserting the heated tobacco product into the chamber, the user cannot be sure whether the heated tobacco product has been inserted to the correct depth within the chamber so that the tobacco portion can be properly heated.

[0008] One answer to these problems is to provide a slightly loose fit between the heated tobacco product and the heating chamber. However, this can cause the heated tobacco product to become too loose during vaping due to shrinkage of the heated tobacco product. Because the remaining amount of volatile material in the heated tobacco product is reduced by heating, the heated tobacco product gradually shrinks as the heating process continues. This can cause the heated tobacco product to be expelled from the heating chamber during vaping and / or cause the shrunken heated tobacco product to be insufficiently heated. This is potentially dangerous and can lead to wasted heated tobacco product.

[0009] The present invention provides a heated tobacco product that addresses these problems. Summary of the Invention

[0010] One aspect of the present invention provides an aerosol generating device, the aerosol generating device comprising: a heating chamber configured to receive a tobacco portion comprising a first magnetic material, the heating chamber including an inner wall and a base; a heating element configured to heat the tobacco portion inserted into the heating chamber; and a second magnetic material disposed on the inner wall of the heating chamber, the second magnetic material being different from the heating element; wherein, in use, when the tobacco portion is inserted into the heating chamber, the second magnetic material is magnetically coupled to the first magnetic material.

[0011] Instead of relying on a friction fit to secure a heated tobacco product within a heating chamber, the present invention provides an aerosol generating device in which a magnetic element is disposed within the heating chamber. In use, when a heated tobacco product including a tobacco portion having a magnetic portion is inserted into the heating chamber, the magnetic material of the tobacco portion bonds with the magnetic portion of the heating chamber, securing the tobacco portion in a predetermined position within the heating chamber. Because the tobacco portion does not encounter resistance during insertion, the risk of breakage is reduced and user inconvenience is reduced. Furthermore, the user does not have any doubt that the tobacco portion has been properly inserted into the heating chamber, as the sensation provided by the magnetic coupling lets the user know when the magnetic coupling between the tobacco portion and the heating chamber is active.

[0012] At the same time, the heated tobacco portion remains fixed throughout use: even if heating the tobacco causes the tobacco portion to shrink, this does not affect the strength of the magnetic coupling between the tobacco portion and the heating element.

[0013] Therefore, due to the magnetic coupling between the tobacco portion and the heating chamber, the present invention provides secure insertion of the heated tobacco product with reduced risk of breakage, improving the reliability of the heated tobacco product, and the tobacco portion is fixed in a position within the heated chamber that promotes optimal heating of the tobacco portion.

[0014] Preferably, the strength of the magnetic attachment between the first and second magnetic materials may be such that the tobacco portion is rotatable within the aerosol generating device.

[0015] This allows the user greater freedom to manipulate the tobacco portion when the mouthpiece of the heated tobacco product is in the user's mouth. For example, the user may rotate the device relative to the heated tobacco product while generating aerosol. This allows the user to find a more comfortable wrist position while using the heated tobacco portion without risking breaking the heated tobacco product.

[0016] In some examples, the second magnetic material may include a ring magnet positioned around the heating chamber, which provides a secure fit for the tobacco portion without relying on the tobacco portion being inserted in a particular orientation.

[0017] In some further examples, the heating element may have a hollow tubular shape, which can easily accommodate a cylindrical tobacco portion and distribute heat evenly, improving aerosol generation. Compared to an internal heating mechanism, i.e., a heating mechanism inside the chamber, an external heating mechanism does not introduce any protruding heating element inside the heating chamber, thereby reducing the risk of breakage of the heated tobacco product and the accumulation of residue inside the heating chamber.

[0018] In an example implementation, the heating element may include an induction coil.

[0019] Advantageously, the induction coil may be longitudinally offset relative to the second magnetic material along the length of the heating chamber, thereby preventing unwanted currents from being induced in the second magnetic material.

[0020] In some implementations, the second magnetic material can be positioned closer to the base than the induction coil, thereby increasing the tobacco portion's insertion depth, which can then ensure the tobacco portion is properly heated to further enhance aerosol generation.

[0021] A second aspect of the present invention provides a system comprising a heated tobacco product and an aerosol generating device according to the first aspect, wherein the heated tobacco product comprises a tobacco portion, the tobacco portion further comprising a proximal end and a distal end.

[0022] Providing a heated tobacco product with the above-described aerosol generating device provides all of the benefits of an aerosol generating device.

[0023] In some advantageous implementations, the first magnetic material may include a metal foil positioned to partially cover the tobacco portion such that a gap is created between the metal foil and the distal end.

[0024] The metal foil provides the necessary magnetic properties to ensure that the first and second magnetic portions are tightly coupled together during use, and is thin enough so as not to affect the size of the heated tobacco product.

[0025] Providing a gap between the metal foil and the distal end provides an additional benefit. Specifically, users tend to touch both the proximal and distal ends of a heated tobacco product when handling the product. If there was no gap between the distal end of the tobacco portion and the metal foil, the metal foil would be damaged by the user during handling. As such, providing a gap between the distal end and the metal foil reduces the risk of the foil being damaged.

[0026] Conveniently, the first magnetic material may comprise steel wool configured to be placed inside the tobacco portion.

[0027] Placing the steel wool inside the tobacco portion allows a user to safely handle the heated tobacco product without risk of damaging the first magnetic material.

[0028] A system is also provided that includes a heated tobacco product and an aerosol generating device according to any of the above examples, wherein the aerosol generating device includes an induction heating coil, the heated tobacco product includes a tobacco portion, and the first magnetic material includes a susceptor disposed within the tobacco portion, the susceptor being configured to heat the tobacco portion when an electric current is induced in the susceptor in use.

[0029] The use of induction coils and susceptors to generate aerosols is known. However, the present invention achieves additional advantages by using a susceptor to couple the tobacco portion of a heated tobacco product to the magnetic portion of the heating chamber. The susceptor can thus provide additional functionality beyond simply heating the tobacco portion. Because a dedicated first magnetic portion is no longer required, the weight and cost of the tobacco portion can be reduced.

[0030] In some additional examples, the length of the susceptor along the longitudinal direction of the aerosol-generating device is greater than the length of the induction coil along the longitudinal direction of the aerosol-generating device, which helps ensure a tight coupling between the second magnetic portion and the susceptor by ensuring that no part of the susceptor is surrounded by the induction coil.

[0031] A system is also provided that includes a heated tobacco product and an aerosol generating device according to any of the above examples, wherein the aerosol generating device includes an induction heating coil, and the heated tobacco product includes a tobacco portion, and the tobacco portion further includes a susceptor that is different from the first magnetic material and the second magnetic material, and the susceptor is disposed within the tobacco portion and configured to heat the tobacco portion when an electric current is induced in the susceptor in use.

[0032] In some cases, providing the first and second magnetic portions independently of the susceptor may be desirable because this can help provide an appropriately strong coupling. The susceptor is maintained at a relatively high temperature during aerosol generation, which can cause a decrease in the magnetic flux density of the susceptor when the susceptor is the first magnetic portion. If the magnetic flux density of the susceptor decreases, the strength of the magnetic coupling between the susceptor and the second magnetic portion may weaken. Using a dedicated first magnetic portion can alleviate such concerns. To ensure an appropriate magnetic coupling strength between the first and second magnetic portions, it is preferable that the material of the first magnetic portion be different from the material of the susceptor.

[0033] Advantageously, the magnetic permeability of the susceptor may exceed the magnetic permeability of the second magnetic material, and the tobacco portion further includes a proximal end, a distal end, and tobacco material that partially fills the tobacco portion so as to create a gap between the tobacco material and the distal end.

[0034] Having a susceptor with a high magnetic permeability ensures that the susceptor generates more heat than the second magnetic material. Ideally, the magnetic permeability of the second magnetic material is appropriately low so that little heat is generated in the second magnetic portion. Furthermore, providing a gap between the tobacco material and the distal end increases the proportion of the tobacco material that is surrounded by the induction coil and heated by the susceptor. This reduces the amount of tobacco material that is not heated and is therefore wasted.

[0035] A third aspect of the present invention provides a heated tobacco product, the heated tobacco product comprising: a mouthpiece portion at a first end of the heated tobacco product; and a tobacco portion at a second end of the heated tobacco product, the tobacco portion and the mouthpiece portion being connected, the tobacco portion comprising a first magnetic material, wherein, in use, when the tobacco portion is inserted into a heating chamber of an aerosol generation device, the first magnetic element is magnetically coupled to a second magnetic element disposed within the heating chamber, and when the first magnetic material is coupled to the second magnetic material, the position of the heated tobacco product within the heating chamber is such that the heating chamber heats the tobacco portion and the mouthpiece portion extends from the device.

[0036] Therefore, the heated tobacco product can be securely contained within the heating chamber without the need to press the heated tobacco product into the heating chamber. The magnetic coupling ensures that the heated tobacco product remains fixed throughout use of the product, i.e., the heated tobacco product does not become loose while the product is in use, for example due to the heated tobacco product shrinking. The heated tobacco product may be rotatable, thereby improving the ergonomics of the device for the user and improving the overall user experience. [Brief explanation of the drawings]

[0037] The present invention will now be described with reference to the accompanying drawings.

[0038] [Figure 1] FIG. 1 is a schematic diagram of a heated tobacco product that includes a magnetic material. [Figure 2] FIG. 2 is a schematic diagram of a heated tobacco product contained in a heating chamber of an aerosol generating device, where the heated tobacco product includes a first magnetic material and the heating chamber includes a second magnetic material. [Figure 3] FIG. 3 is a schematic diagram of a heated tobacco product contained in a heated chamber of an aerosol generating device, where the heated tobacco product includes a susceptor and the heated chamber includes a second magnetic material. [Figure 4]Figure 4 is a schematic diagram of a heated tobacco product contained in a heated chamber of an aerosol generating device, where the heated tobacco product includes a first magnetic material and a second magnetic material is disposed at the base of the heated chamber. [Figure 5A] 5A-5C are schematic diagrams of ring magnets with various magnetic domain configurations. [Figure 5B] 5A-5C are schematic diagrams of ring magnets with various magnetic domain configurations. [Figure 5C] 5A-5C are schematic diagrams of ring magnets with various magnetic domain configurations. [Figure 6] FIG. 6 is a schematic diagram of two cylindrical magnets. DETAILED DESCRIPTION OF THE INVENTION

[0039] The present disclosure relates to a heated tobacco product, also known as a heated tobacco stick, or more simply a heat stick, which includes a magnetic material that, in use, combines with another magnetic material within the heating chamber of an aerosol generating device to secure the heated tobacco product in a predetermined position within the heating chamber.

[0040] An exemplary heated tobacco product is shown in Figure 1. The heated tobacco product 10 includes a mouthpiece portion 11 and a tobacco portion 12. The tobacco portion 12 includes a tobacco film that, when heated, generates a vapor that can be inhaled by a user, similar to a traditional cigarette. However, unlike a traditional cigarette, the tobacco film is heated, not combusted. The mouthpiece portion 11 may include various internal components (not shown), such as a filter that filters and cools the vapor, and a mouthpiece. Of course, the mouthpiece portion 11 may include other components.

[0041] In use, a user inserts the heated tobacco product 10 into the heating chamber of the aerosol generating device. The heating chamber heats the tobacco film within the tobacco portion 12 to generate vapor, which the user inhales through the mouthpiece portion 11.

[0042] As mentioned above, conventional methods for securing a heated tobacco product within a heating chamber rely on the dimensions of the heated tobacco product being slightly smaller than the dimensions of the heating chamber, so that the heated tobacco product can be secured within the heating chamber by friction. This "friction fit" method has various disadvantages, as mentioned above. For example, the heated tobacco product may break due to the force applied to the stick during insertion into the heating chamber.

[0043] To solve this problem, the tobacco portion 12 of the heated tobacco product 10 shown in Figure 1 further includes a first magnetic material 13. During use, the first magnetic material 13 magnetically couples to a second magnetic material within the heating chamber of the aerosol generating device, thereby fixing the heated tobacco product 10 in a predetermined position within the heating chamber. Typically, the mouthpiece portion 11 protrudes from the heating chamber, allowing a user to easily inhale vapor generated by the tobacco film within the tobacco portion 12.

[0044] During use, the heated tobacco product 10 utilizes a magnetic coupling between the heated tobacco product 10 and the heating chamber instead of relying on a friction fit to secure the heated tobacco product 10 within the heating chamber. The tobacco portion 12 does not encounter resistance during insertion, reducing the risk of breakage. Furthermore, the user will know when the magnetic coupling between the tobacco portion 12 and the heating chamber is active, eliminating any doubt that the tobacco portion has been properly inserted into the heating chamber.

[0045] At the same time, due to the magnetic coupling, the heated tobacco product 10 remains fixed throughout use. Even if the tobacco portion 12 shrinks due to heating the tobacco film, the shrinkage does not affect the strength of the magnetic coupling between the tobacco portion and the heating element.

[0046] A further advantage is that the manufacturing tolerances for the dimensions of the heated tobacco product 10 are increased. That is, because the heated tobacco product 10 does not rely on friction to be securely contained within the heating chamber, there is no longer a strict requirement that the dimensions of the heated tobacco product 10 be very slightly smaller than the dimensions of the heating chamber. Therefore, the heated tobacco product 10 can be easily manufactured.

[0047] Therefore, by magnetically coupling between the first magnetic material 13 of the tobacco portion 12 and the heating chamber, the present invention provides secure insertion of the heated tobacco product 10 with reduced risk of breakage, improving the reliability of the heated tobacco product 10, and the tobacco portion is fixed in a position within the heating chamber that promotes optimal heating of the tobacco portion. Additionally, the heated tobacco product is easier to manufacture than conventional heated tobacco products that rely on a friction fit.

[0048] The first magnetic material 13 may be any type of suitable magnetic material. For example, the first magnetic material 13 may be any type of metal foil, such as iron foil, which is wrapped around at least a portion of the outer surface of the tobacco portion 12.

[0049] In another example, the first magnetic material 13 may be formed of steel wool inserted into the tobacco portion 12. Metal foil and steel wool may be used exclusively or in combination.

[0050] In some examples, the first magnetic material 13 may be positioned such that a gap is formed between the distal end 15 of the tobacco portion 12 and the magnetic material 13, thereby avoiding damage to the first magnetic material 13 when a user handles the heated tobacco product 10.

[0051] Furthermore, the strength of the magnetic coupling between the first magnetic material 13 and the magnetic material in the heating chamber can be adjusted by appropriately adjusting the distance between the first magnetic material 13 and the second magnetic material, or by selecting a magnetic material with a specific magnetic permeability to provide a desired strength of magnetic coupling. The strength of the magnetic coupling or magnetic attachment can allow the heated tobacco product 100 to be rotated within the heating chamber of the aerosol generating device. This allows the user to rotate the device to a more comfortable wrist position while the heated tobacco product 10 is inserted into the heating chamber, resulting in a more ergonomic user experience.

[0052] Referring now to FIG. 2 , there is shown an example of a heated tobacco product 10 inserted into a heating chamber 21 of an aerosol generation device 20. The heated tobacco product 10 is the same as that described in relation to FIG. 1 . It can be seen that a first magnetic material 13 is surrounded by a second magnetic material 22 disposed on the inner wall of the heating chamber 21. In this particular example, the second magnetic material 22 is disposed at the base of the heating chamber 21, although this is not required. For example, the second magnetic material may be located around the middle of the heating chamber 21. In such an example, the first magnetic material 13 is moved to a corresponding position to ensure that the heated tobacco product 10, and in particular the tobacco portion 13, is fully inserted into the heating chamber 21.

[0053] The aerosol generating device 20 includes components typically found in an aerosol generating device, such as a battery, a heating element, eg, a resistive heating element, and a user interface.

[0054] The heated tobacco product 10 is usually cylindrical, and therefore the heating chamber 21 is usually formed as a hollow tube. However, it is possible to provide heated tobacco products with different three-dimensional cross sections, as long as it is possible to insert the heated tobacco product 10 into the heating chamber 21 and achieve magnetic coupling between the heated tobacco product 10 and the heating chamber 21.

[0055] The second magnetic material 22 can take several forms, as shown in FIGS. 5A-6. Typically, the second magnetic material 22 is formed as a ring magnet 60, 70, or 80. The ring magnet is disposed on the inner wall of the heating chamber 21. The inner diameter of the ring magnet is at least large enough to accommodate the diameter of the heated tobacco product 10 and may be large enough to surround the outer surface of the heating chamber 21. As shown in FIGS. 5A-5C, various magnetic domain configurations are possible. For example, in FIG. 5A, the first magnetic domain 61 and the second magnetic domain 62 are separated along the radial axis of the ring magnet 60. In FIG. 5B, the first magnetic domain 71 and the second magnetic domain 72 are separated along the circumferential axis of the ring magnet 70. In FIG. 5C, the first magnetic domain 71 and the second magnetic domain 72 are separated into an inner ring and an outer ring.

[0056] Alternatively, the second magnetic material 22 may be formed of one or more cylindrical magnets 60, as shown in FIG. 6. A first cylindrical magnet 61 is positioned on one side of the heating chamber 21, and a second cylindrical magnet 62 is positioned on the opposite side of the heating chamber. Other arrangements are possible. Similarly, while only one cylindrical magnet can be used, two are preferred to ensure a solid magnetic coupling regardless of the orientation of the heated tobacco product 10. Three or more cylindrical magnets 60 may be positioned within the heating chamber 21 with the same effect.

[0057] So far, the first magnetic material has been described as either metal foil wrapped around the tobacco portion or steel wool inserted into the tobacco portion. It is, of course, possible that a combination of steel wool and metal foil could be used.

[0058] It should be noted that the term "magnetic material" is not construed solely as a permanent magnet, but rather includes a ferromagnetic material. Those skilled in the art will understand that magnetic coupling between the first magnetic material 13 and the second magnetic material 22 can be achieved when at least one of the first magnetic material 13 and the second magnetic material 22 is a permanent magnet. In other words, it is acceptable to use a permanent magnet to form one of the first magnetic material 13 or the second magnetic material 22, and to use a ferromagnetic material to form the other of the first magnetic material 13 or the second magnetic material 22.

[0059] 3, in another example, the first magnetic material 33 may include a susceptor. The susceptor 33 is disposed inside the tobacco portion 32 of the heated tobacco product 30. When the first magnetic material is formed as the susceptor 33, the heating chamber 41 of the aerosol generating device 40 further includes at least one induction coil 44. Those skilled in the art will understand that the susceptor is also made of a magnetic material so that the susceptor 33 can be heated when a current passes through the induction coil 44. Similar to the example of FIG. 2, the second magnetic material 42 may include a ring magnet or at least one cylindrical magnet disposed on the inner wall of the heating chamber 41.

[0060] The induction coil 44 may be longitudinally offset relative to the second magnetic material 42 along the length of the heating chamber 41 to prevent unwanted currents from being induced in the second magnetic material 42.

[0061] By taking advantage of the fact that the susceptor is a magnetic material, the present disclosure provides coupling between the heated tobacco product 30 and the heating chamber 21 of the aerosol generating device 40 without the need to add any additional components to the heated tobacco product 30 beyond the susceptor 33.

[0062] The tobacco portion 32 includes a proximal end 34, a distal end 35, and tobacco material 36. FIG. 3 shows that the susceptor 33 and tobacco material 36 extend from the distal end 34 to the proximal end of the tobacco portion 32. However, in some examples, the tobacco material 36 and susceptor 33 may partially fill the tobacco portion 32, such that a gap is created between the tobacco material 36, the susceptor 33, and the distal end 34. That is, a portion of the tobacco portion 32 is devoid of tobacco material 36. This is beneficial because a portion of the susceptor 33 may not be surrounded by the induction coil 44 due to the location of the second magnetic material 42. As a result, some of the tobacco material 36 may be wasted. To avoid waste, a portion of the tobacco portion 32, such as a portion adjacent to the second magnetic material 42, may be devoid of tobacco material 36.

[0063] The magnetic permeability of the susceptor 33 may be greater than the magnetic permeability of the second magnetic material 42. In this way, the induction coil 44 is less likely to unintentionally induce a current in the second magnetic material 42. However, the magnetic permeability of the second magnetic material 42 is greater than 1.

[0064] Referring now to Figure 4, there is shown another example of an aerosol generation device 50. In use, the heating chamber 51 of the aerosol generation device 50 may house the tobacco portion 12 of the heated tobacco product 10. The mouthpiece portion 11 of the heated tobacco product 10 protrudes from the aerosol generation device 50. It will be understood that the heated tobacco product 10 may be any of the heated tobacco products described above in relation to Figures 1 to 3.

[0065] The second magnetic material 55 is disposed at the base of the heating chamber 51. The first magnetic material 13 is located at the distal end 15 of the tobacco portion 12. This arrangement is particularly effective in ensuring that the heated tobacco product 10 rests securely on the base of the heating chamber 51, thereby ensuring that the tobacco portion 12 is properly heated by the heating chamber 51.

[0066] Although various implementations of heated tobacco products and aerosol generating devices have been described, it will be understood that any of the heated tobacco products described above may be combined with any of the aerosol generating devices.

[0067] Furthermore, although the heated tobacco product has been described as having a first magnetic portion, the heated tobacco product may equally include multiple magnetic portions, which may be of different types. For example, the heated tobacco product may include a susceptor and steel wool.

[0068] Referring again to the magnets shown in Figures 5A-6, it will be understood that the second magnetic portion will be exposed to high temperatures because it is within a heated chamber. To prevent loss of magnetic force between the first and second magnetic materials, the second magnetic material may have a high Curie temperature. This means that the second magnetic material will not lose its magnetic strength when exposed to high temperatures during use. As an example, the second magnetic material may include neodymium. Other materials with high Curie temperatures will be known to those skilled in the art, and it will be apparent that one high Curie temperature material can be substituted for another.

[0069] In some examples, the second magnetic material may include a magnetic tape disposed around the heating chamber. The tape may be disposed within the heating chamber or external to the heating chamber.

[0070] Another advantage of providing a heated tobacco product with a first magnetic portion is that, using suitable control circuitry, the aerosol device can detect when a heated tobacco product has been inserted into the heating chamber, which could prompt the aerosol generating device to, for example, begin warming up the heater or provide information to the user.

[0071]

[0003] An aerosol generating device has been described above, which includes a heated tobacco product having a tobacco portion including a first magnetic material and a heating chamber including a second magnetic material. During use, the first magnetic portion is magnetically coupled to the second magnetic portion to secure the heated tobacco product within the heating chamber. The heated tobacco product can be inserted without applying excessive force, which is required when relying on a conventional friction fit, reducing the risk of damaging the heated tobacco product. Furthermore, the heated tobacco product can be reliably inserted into the heating chamber so that the tobacco portion is properly heated.

[0072] It should be understood that the heated tobacco products and aerosol generating devices described above can be modified according to design choices and manufacturer preferences. For example, the relative proportions of the tobacco portion and the mouthpiece portion can be adjusted to make the tobacco portion longer and the mouthpiece portion shorter, or vice versa. Similarly, it should be understood that, in use, the positions of the first and second magnetic materials are such that the entire tobacco portion is contained within the heating chamber.

[0073] The foregoing description of illustrative embodiments has been presented for purposes of illustration and description and is not intended to be exhaustive or limited to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the disclosed embodiments.

Claims

1. An aerosol generating device, comprising: a heating chamber configured to receive a tobacco portion including a first magnetic material, the heating chamber including an inner wall and a base; a heating element configured to heat the tobacco portion inserted within the heating chamber; a second magnetic material disposed on the inner wall of the heating chamber, the second magnetic material being different from the heating element; Including, In use, when the tobacco portion is inserted into the heating chamber, the second magnetic material is magnetically coupled to the first magnetic material.

2. 2. The aerosol generating device of claim 1, wherein the strength of the magnetic attachment between the first magnetic material and the second magnetic material is such that the tobacco portion is rotatable within the aerosol generating device.

3. 3. The aerosol generating device of claim 1, wherein the second magnetic material comprises a ring magnet arranged around the heating chamber.

4. The aerosol generating device of claim 1 , wherein the heating element comprises a hollow tubular shape.

5. 4. The aerosol generating device according to claim 1, wherein the heating element comprises an induction coil.

6. 6. The aerosol generating device of claim 5, wherein the induction coil is longitudinally offset relative to the second magnetic material along the length of the heating chamber.

7. 7. The aerosol generating device of claim 6, wherein the second magnetic material is located closer to the base than the induction coil.

8. A system comprising a heated tobacco product and the aerosol generating device according to any one of claims 1 to 4, wherein the heated tobacco product comprises the tobacco portion; The tobacco portion further includes a proximal end and a distal end.

9. 9. The system of claim 8, wherein the first magnetic material comprises a metal foil positioned to partially cover the tobacco portion such that a gap is created between the metal foil and the distal end.

10. 9. The system of claim 8, wherein the first magnetic material comprises steel wool configured to be disposed inside the tobacco portion.

11. A system comprising a heated tobacco product and the aerosol generating device according to any one of claims 5 to 7, wherein the heated tobacco product comprises the tobacco portion; The system wherein the first magnetic material includes a susceptor disposed within the tobacco portion, the susceptor configured to, in use, heat the tobacco portion when an electric current is induced within the susceptor.

12. 12. The system of claim 11, wherein a length of the susceptor along a longitudinal direction of the aerosol-generating device is greater than a length of the induction coil along the longitudinal direction of the aerosol-generating device.

13. A system including the heated tobacco product and the aerosol generating device according to any one of claims 5 to 7, wherein the heated tobacco product includes the tobacco portion; The tobacco portion further includes a susceptor different from the first magnetic material and the second magnetic material, the susceptor being disposed within the tobacco portion and configured, in use, to heat the tobacco portion when an electric current is induced in the susceptor.

14. The magnetic permeability of the susceptor exceeds the magnetic permeability of the second magnetic material, and the tobacco portion further comprises: a proximal end; a distal end; tobacco material partially filling the tobacco portion so as to create a gap between the tobacco material and the distal end; The system of claim 13 , comprising:

15. A heated tobacco product, comprising: a mouthpiece portion at a first end of the heated tobacco product; a tobacco portion at a second end of the heated tobacco product, the tobacco portion and the mouthpiece portion being connected, the tobacco portion including a first magnetic material such that, in use, when the tobacco portion is inserted into a heating chamber of an aerosol generating device, the first magnetic element is magnetically coupled to a second magnetic element disposed in the heating chamber, and when the first magnetic material is coupled to the second magnetic material, the position of the heated tobacco product in the heating chamber is such that the heating chamber heats the tobacco portion and the mouthpiece portion extends from the device. Heated tobacco products.

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