aerosol generator

Abstract

An aerosol generating device comprising a first housing element and a second housing element configured to move between an open position and a closed position, wherein in the closed position, the first housing element and the second housing element together define an aerosol-generation chamber configured to surround a portion of the aerosol-generating substrate and further define an air flow path including an inlet, an outlet, and the aerosol-generation chamber, the first housing element and / or the second housing element comprising a sealing member configured to seal at least a portion of the air flow path between the inlet and the outlet in the closed position, the first housing element and the second housing element being configured to engage with each other by moving along an approaching direction to define the aerosol-generation chamber, and the sealing member comprising a wall member extending in the approaching direction.

Description

[Technical Field]

[0001] The present disclosure relates to an aerosol-generating device in which an aerosol-forming substrate is heated to form an aerosol. The disclosure is particularly applicable to portable aerosol-generating devices that may be self-contained and low-temperature. Such devices may heat tobacco or other suitable aerosol substrate material by conduction, convection, and / or radiation, rather than by combustion, to generate an aerosol for inhalation. [Background technology]

[0002] The popularity and use of risk reduction or risk modification devices (also known as vaporizers) has grown rapidly in recent years as aids to assist regular smokers who wish to quit smoking traditional tobacco products such as cigarettes, cigars, cigarillos, and cigarettes. A variety of devices and systems are available that heat or warm aerosolizable substances, as opposed to burning tobacco in traditional tobacco products.

[0003] A commonly available risk reduction or risk modification device is the substrate-heated aerosol generator or heat-not-burn device. This type of device generates an aerosol or vapor by heating an aerosol substrate, typically containing moist tobacco or other suitable aerosolizable material, to temperatures typically ranging from 150°C to 350°C. By heating rather than burning or combusting the aerosol substrate, an aerosol is released that contains the ingredients desired by the user but without the toxic and carcinogenic by-products of combustion and burning. Furthermore, aerosols generated by heating tobacco or other aerosolizable material typically do not contain the burnt or bitter taste that can be unpleasant to users due to combustion and burning. Therefore, the substrate does not require sugars and other additives typically added to such materials to make the smoke and / or vapor more palatable to users.

[0004] The emitted aerosol is typically drawn from the device by the user inhaling through the mouthpiece. Inhalation creates an airflow through the device that carries the aerosol to the user. However, if the airflow path from the heated substrate to the mouthpiece is not adequately sealed, air may flow to the user from another location, meaning that the user must inhale harder or longer to obtain the same amount of aerosol. Summary of the Invention [Problem to be solved by the invention]

[0005] It would therefore be desirable to provide an aerosol generating device that provides improved sealing of the airflow path through the device. [Means for solving the problem]

[0006] According to a first aspect, the present invention provides an aerosol generation device comprising a first housing element and a second housing element configured to move between an open position and a closed position, wherein in the closed position the first housing element and the second housing element together define an aerosol-generation chamber configured to surround a portion of the aerosol-generating substrate and further define an air flow path including an inlet, an outlet and the aerosol-generation chamber, and the first housing element and / or the second housing element comprises a sealing member configured to seal at least a portion of the air flow path between the inlet and the outlet in the closed position.

[0007] By providing a sealing member, air leakage between the first and second housing elements is reduced and the air flow through the aerosol generating device can be more precisely designed to improve the heating efficiency and quality of the generated aerosol.

[0008] Optionally, the first housing element and the second housing element are configured to engage with each other by moving along the approaching direction to define the aerosol generation chamber, and the sealing member includes a wall member extending in the approaching direction.

[0009] By providing a wall member extending in the approaching direction, a seal is established when the first and second housing elements meet in the closed position.

[0010] Optionally, one of the first housing element and the second housing element includes a wall member, and the other of the first housing element and the second housing element includes a sliding contact wall extending in the approaching direction, the wall member configured to slide against the sliding contact wall when the first housing element and the second housing element move near the closed position.

[0011] By configuring the wall members to slide against the sliding contact walls, the seal will still be effective even if the first and second housing elements are not in exactly the closed position, i.e., the user does not need to precisely position the housing elements to establish the seal.

[0012] Optionally, the wall member includes a first wall portion extending along the air flow path.

[0013] The wall members extending along the air flow path in the approach direction have the effect of preventing lateral air leakage into or out of the air flow path between the housing elements, thereby reducing cooling caused by air leaking into the air flow path and reducing aerosol losses caused by air leaking out of the air flow path.

[0014] Optionally, the wall member includes a second wall portion extending along the closed end of the air flow passage.

[0015] By sealing the ends of the air flow passage, it is possible to ensure that air can flow from the inlet to the outlet.

[0016] Optionally, the wall member extends continuously from a first end at the open end of the air flow passage, around the periphery of the aerosol-generation chamber, to a second end at the open end of the air flow passage.

[0017] In other words, the wall member forms an open loop around the air flow passage, which provides a simple and robust structure for sealing the ends of the air flow passage and for sealing the sides of the air flow passage.

[0018] Optionally, the first housing element or the second housing element includes a through hole connected to an inlet or outlet of the air flow path.

[0019] This configuration with a through hole allows the inlet or outlet to be defined more precisely than a shape that is dependent on the first and second housing elements being in a particular closed position.

[0020] Optionally, the inlet or outlet is a gap between the first and second housing elements in the closed position, the gap corresponding to an open end of the air flow path.

[0021] By providing the inlet or outlet as a gap between housing elements, the inlet or outlet can be easily cleaned, which is particularly advantageous for outlets that may be expected to come into contact with the mouth of a user of the aerosol generating device.

[0022] Optionally, the first housing element and the second housing element are attached by a hinge.

[0023] Mounting the housing elements by a hinge means that open and closed positions can be defined as the ends of a one-dimensional range of motion, allowing the user to easily operate the device.

[0024] Optionally, the hinge is located at an end of the air flow passage opposite the gap.

[0025] This configuration with the gap opposite the hinge addresses the problem that the end of the housing element furthest from the hinge has the greatest range of motion and is therefore the most difficult to seal effectively.

[0026] Optionally, the device has an alligator configuration where the mouthpiece end is configured to open about a hinge, and the first housing element or the second housing element extends beyond the hinge to provide a handle end.

[0027] This configuration is particularly easy to operate, as the aerosol generating device can be held in the hand at the same position on the handle end both to inhale the aerosol through the mouthpiece and to move the housing element to the open position to replace a portion of the aerosol-generating substrate.

[0028] Optionally, the sealing member comprises an elastomeric material.

[0029] Optionally, the first housing element includes an open-top chamber configured to receive a portion of the aerosol-generating substrate, and the second housing element includes a movable cover for closing the chamber.

[0030] Optionally, the first housing element includes a platform portion protruding from the main surface, the open-top chamber being formed in the platform portion, the movable cover being configured to engage with the platform portion and the main surface, and the sealing member being disposed on a sidewall of the platform portion or on a surface of the movable cover configured to engage with the sidewall of the platform portion.

[0031] The platform portion and the movable cover that engages it provide a mating surface that extends along the approach direction to block airflow out of the air flow path. At the same time, the platform increases the depth of the first housing element available to fit into the open-top chamber, which means that the overall device can be made thinner for a given size open-top chamber.

[0032] Optionally, the first housing element includes a heating element disposed on a bottom surface of the open-top chamber.

[0033] Optionally, the second housing element includes an inner surface arranged to face the open-top chamber in the closed position, the inner surface comprising a thermally conductive material.

[0034] The thermally conductive material has the effect of increasing the uniformity of heating of portions of the aerosol-generating substrate. [Brief explanation of the drawings]

[0035] [Figure 1A] 1 is a schematic diagram of separate housing elements of an aerosol generating device 1 according to a first example of the present invention. [Figure 1B] 1 is a schematic diagram of separate housing elements of an aerosol generating device 1 according to a first example of the present invention. [Figure 2A] 1 is a schematic cross-sectional view of an aerosol generating device 1 in a first plane. [Figure 2B] 1 is a schematic cross-sectional view of an aerosol generating device 1 in a first plane. [Figure 3A] 1 is a schematic cross-sectional view of the aerosol generating device 1 in a second plane. [Figure 3B] 1 is a schematic cross-sectional view of the aerosol generating device 1 in a second plane. [Figure 4A] FIG. 1 is a schematic diagram of an aerosol generating device 1 according to a second embodiment of the present invention. [Figure 4B] FIG. 1 is a schematic diagram of an aerosol generating device 1 according to a second embodiment of the present invention. [Figure 5A] FIG. 1 is a schematic diagram of an aerosol generating device 1 according to a third embodiment of the present invention. [Figure 5B] FIG. 1 is a schematic diagram of an aerosol generating device 1 according to a third embodiment of the present invention. [Figure 6A] FIG. 10 is a schematic diagram of an aerosol generating device 1 according to a fourth example. [Figure 6B] FIG. 10 is a schematic diagram of an aerosol generating device 1 according to a fourth example. DETAILED DESCRIPTION OF THE INVENTION

[0036] Figure 1A is a schematic diagram of a first housing element 11 of the aerosol generating device 1, and Figure 1B is a schematic diagram of a second housing element 12 of the aerosol generating device 1. The bodies of the first housing element 11 and the second housing element 12 may be made, for example, from a medical-grade high-temperature plastic material. Preferably, the plastic material is a 3D printable material.

[0037] The first housing element 11 and the second housing element 12 are attached to one another by attachment means 13 and are configured to move relative to one another between an open position and a closed position.

[0038] The attachment means 13 may, for example, be a hinge or a flexible part of the housing that limits the relative movement of the first housing element 11 and the second housing element 12 to a predetermined movable path. Alternatively, the first element 11 and the second housing element 12 may be more generally attached, for example by means of a cable. Additionally or alternatively, the first housing element 11 and the second housing element 12 may be completely separable. For example, the attachment means 13 may be a detachable element, such as a fastener, or may be omitted entirely.

[0039] When the aerosol generating device 1 is in the closed position, the first housing element 11 and the second housing element 12 together define an air flow path 14 that includes an inlet 141 and an outlet 142 .

[0040] In the example shown in FIGS. 1A and 1B, the air flow passage 14 is defined between a surface 143 of the first housing element 11 and a surface 144 of the second housing element 12 .

[0041] Additionally, when the aerosol generating device 1 is in the closed position, the first housing element 11 and the second housing element 12 together define an aerosol generating chamber 15 configured to surround a portion of the aerosol generating substrate.

[0042] 1A and 1B, in the example shown, the aerosol-generation chamber is formed from an open-top chamber 151 in the first housing element 11 configured to receive a portion of the aerosol-generating substrate, and a surface 152 of the second housing element 12 that serves as a movable cover for the aerosol-generation chamber 15. The open-top chamber 151 may simply be a recess in the surface 141 of the first housing element 11.

[0043] When the aerosol generation device 1 is in the open position, the first housing element 11 is spaced apart from the second housing element 12, allowing a user to access the open-top chamber 151. In this position, a user can add or remove a portion of the aerosol-generating substrate. In particular, since the substrate is consumed as the aerosol is generated, the substrate must be periodically replaced by moving the first housing element 11 and the second housing element 12 to the open position. On the other hand, when the aerosol generation device 1 is in the closed position, the surface 152 covers the aerosol-generating chamber 15, allowing a portion of the aerosol-generating substrate to be efficiently heated to generate an aerosol.

[0044] The aerosol-generating substrate (not shown) may include, for example, nicotine or tobacco and an aerosol-forming agent. The tobacco may take the form of various materials, such as cut tobacco, granulated tobacco, tobacco leaf, and / or reconstituted tobacco. Suitable aerosol-forming agents include polyols (such as sorbitol, glycerol, and glycols such as propylene glycol or triethylene glycol), non-polyols (such as monohydric alcohols, acids such as lactic acid, glycerol derivatives, triacetin, triethylene glycol diacetate, triethyl citrate, and esters such as glycerin or vegetable glycerin). In some examples, the aerosol-generating agent may be glycerol, propylene glycol, or a mixture of glycerol and propylene glycol. The substrate may also include at least one of a gelling agent, a binder, a stabilizer, and a humectant.

[0045] A portion of the aerosol-generating substrate is preferably shaped to fit within the open-top chamber 151. For example, the portion may be a generally rectangular parallelepiped having a length L and width W corresponding to the open-top chamber 151.

[0046] When the aerosol generating device 1 is in the closed position, the air flow path 14 intersects with the aerosol generating chamber 15 so that the aerosol generated in the aerosol generating chamber 15 can be drawn along the air flow path 14 toward the outlet 144.

[0047] The first housing element 11 and the second housing element 12 in this example each include wall portions 111, 112 adjacent to the air flow passage 14. In the closed position, the wall portions 111, 112 define the walls of the air flow passage 14 between the inlet 141 and the outlet 142.

[0048] However, the open and closed positions each have a certain tolerance. A user of the aerosol generating device 1 cannot close the device 1 tightly, which means that even in the closed position there is at least some gap between the first housing element 11 and the second housing element 12. As a result, there is a need to improve the seal in the closed position.

[0049] To improve sealing of the air flow path 14 in the closed position, a sealing member 16 is provided on the first housing element 11. The sealing member 16 is configured to seal at least a portion of the air flow path between the inlet 141 and the outlet 142 in the closed position. Improving sealing of the air flow path 14 increases air flow from the inlet 141 to the outlet 142 and reduces air leakage through other gaps between the first housing element 11 and the second housing element 12. Because the sealing member 16 is configured to seal between the first housing element 11 and the second housing element 12, the sealing member 16 may be attached to either the first housing element 11 or the second housing element 12 and / or may include a first section attached to the first housing element 11 and a second section attached to the second housing element 12.

[0050] To further describe the sealing member 16, it is helpful to refer to cross-sectional views taken along line X1 in Figures 1A and 1B, as shown in Figures 2A and 2B. In Figure 2A, the aerosol generation device 1 is in an open position, and in Figure 2B, the aerosol generation device 1 is in a closed position.

[0051] More specifically, in the first example, the first housing element 11 and the second housing element 12 are configured to engage with each other by moving along the approach direction indicated by the arrow in Figure 2A to define the aerosol generation chamber 15.

[0052] The sealing member 16 includes a first wall member 161 attached to the second housing element 12 and extending in the direction of approach so that the sealing member 16 can be compressed and deformed to form a seal against the first housing element 11 when the first housing element 11 and the second housing element 12 approach each other in the closed position.

[0053] To provide this compression and deformation behavior, the sealing member 16 is preferably made from a resilient material, such as an elastomer, which may be, for example, food-safe silicone.

[0054] 2A and 2B, the first wall member 161 extends along the closed end 145 of the air flow passage 14. At the same time, the inlet 141 includes a through-hole that passes through the second housing element 12. The through-hole can similarly be formed through the first housing element 11. By defining the inlet 141 using a through-hole instead of a gap between the first housing element 11 and the second housing element 12, the shape of the inlet 141 can be more precisely defined.

[0055] In some examples, outlet 142 may also or alternatively include a through-hole, however, in this example, outlet 142 is the gap between the first and second housing elements in the closed position, the gap representing the open end of the air flow path.

[0056] More specifically, the outlet 142 comprises a gap at the end of the air flow path 14 opposite the attachment means 13 (in this case the hinge). The combination of a gap outlet 142 between the housing elements at one end of the air flow path and the hinge 13 at or beyond the other end of the air flow path has the effect of not having to attempt to seal the first housing element 11 and the second housing element 12 at the point furthest from the hinge and therefore having the widest range of motion, and therefore the most difficult point along the air flow path 14 to seal, if any.

[0057] 2A and 2B also show some other optional features of the aerosol generating device 1.

[0058] The aerosol-generation chamber 15 in this example includes a heating element 153 for heating a portion of the aerosol-generating substrate to generate the aerosol. Alternatively, in other examples, the aerosol-generation chamber 15 may generate the aerosol using other means, such as vibration.

[0059] The heating element may be, for example, an electrically resistive track. Alternatively, the heating element may generate heat by a chemical reaction, such as combustion.

[0060] The heating element may be an areal heating element disposed on or within the surface of the recess 151 or surface 152. Alternatively, the heating element may be connected to either of these surfaces 151, 152 via one or more thermally conductive parts, such as metal parts.

[0061] Additionally, in this example, the first housing element 11 includes a handle end 112 that extends beyond the attachment means 13. The handle end 112 provides a portion of the aerosol generating device that can be held in the hand while moving the first housing element 11 and the second housing element 12 between the open and closed positions.

[0062] The handle end 112 can also be used to enclose components of the aerosol generation device 1 that are not directly involved in the airflow or aerosol generation. For example, the handle end 112 can house a control circuit 171 and / or a power source 172 (such as a battery). In other examples, the handle end 112 can instead be an extension of the second housing element 12.

[0063] The combination of the handle end 112 at one end of the aerosol generation device 1, the attachment means 13 at the midpoint, and the mouthpiece end including the outlet 142 that opens when in the open position to provide access to the aerosol generation chamber 15 can be described as an "alligator" configuration. The "alligator" mechanism has several advantages, including making the air flow path 14 and aerosol generation chamber 15 easier to manipulate and clean, and reducing the required thickness of the aerosol generation device 1 by providing space for components beyond the opening hinge.

[0064] Furthermore, in this example, the second housing element 12 includes an inner surface 154 arranged to face the open-top chamber 151 in the closed position, the inner surface comprising a thermally conductive material. For example, the inner surface 154 may comprise a metal such as stainless steel or aluminum. Providing such a thermally conductive surface results in a more uniform temperature within the air flow path 14, improving the quality of the condensed aerosol. Additionally, the metal surface 154 makes the aerosol generation device 1 more robust and easier to clean.

[0065] Figures 3A and 3B show cross-sectional views taken along line X2 in Figures 1A and 1B. Figure 3A shows a cross-sectional view of the first housing element 11 and the second housing element 12 when they are separated in the open position, and Figure 3B shows a cross-sectional view of the first housing element and the second housing element when they are adjacent in the closed position.

[0066] 3A and 3B show a sealing member 16 in the form of a second wall member 162 extending along the air flow path 14. The second wall member 162 may be provided in addition to or instead of the first wall member 161 described above.

[0067] 1A, first wall member 161 and second wall member 162 may be combined to provide a wall member that extends continuously around the aerosol-generation chamber from a first end at the open end of the air flow passage to a second end at the open end of the air flow passage. In this example, the open end is outlet 142, but could alternatively be inlet 141. Providing continuous sealing members along the sides and ends of air flow passage 14 further improves sealing of the air flow passage.

[0068] Preferably, each wall member 161, 162 is configured to contact a sliding contact wall 163 near the closed position. More specifically, the sliding contact wall here refers to a wall extending in the approaching direction on one of the first housing element 11 and the second housing element 12, and configured so that the wall members 161, 162 on the other of the first housing element 11 and the second housing element 12 slide against the sliding contact wall 163 when the first housing element 11 and the second housing element 12 move near the closed position. By providing sliding contact between the wall members 161, 162 and the opposing wall, the sealing member 16 can provide a sealing effect over a range of relative positions of the first housing element 11 and the second housing element 12 so that the air flow path 14 is sealed even when the first housing element 11 and the second housing element 12 are not exactly in the closed position.

[0069] 4A and 4B are schematic diagrams of a second example of an aerosol generating device 1, in which the first housing element 11 and the second housing element 12 are in different relative positions. The second example is similar to the first example, but has additional optional features.

[0070] In a second example, the air flow passage 14 and open-top chamber 151 take the form of a recess in a platform portion that protrudes from the surface of the first housing element 11. The movable cover 152 is configured to engage the top surface 164 of the platform portion and the main surface of the wall portion 111.

[0071] The platform portion has sliding contact walls 163 that extend continuously along the two sides of the air flow passage 14 and the closed end 145 of the air flow passage 14, thus providing a surface for engaging with the wall members 162 of the sealing member 16 that extend continuously along the two sides of the air flow passage and the closed end 145. Similarly, the sliding contact walls 163 and the continuous wall members 162 can be reversed, so that the continuous wall members are located on the side walls of the platform portion and the sliding contact walls are corresponding surfaces on the second housing element 12.

[0072] The platform portion may be made of a different material than the main bodies of the first and second housing elements 11, 12. For example, the platform portion may be made of polyetheretherketone (PEEK), which has good mechanical properties at high temperatures for heating the aerosol-generating substrate and low thermal conductivity. Additionally, PEEK is food-safe, so no additives are added to the aerosol to be generated.

[0073] Additionally, in a second example, the attachment means 13 is another hinge, however in this example the hinge 13 is located in the plane of the air flow passage 14 so that the sealing element 16 can more easily form a seal by moving in the approaching direction.

[0074] 4A and 4B, examples may include a locking element 18 for releasably locking the first housing element 11 and the second housing element 12 in a closed position. For example, the locking element 18 may take the form of a pair of magnets or a clasp.

[0075] 4B additionally shows an example in which the heating element 153 is formed on the bottom surface of the open-top chamber 151. In this case, the heating element 153 comprises a resistive track.

[0076] FIG. 5A is a schematic diagram of a first housing element 11 of an aerosol generation device 1 according to the third example, and FIG. 5B is a schematic diagram of a second housing element 12 of an aerosol generation device 1 according to the third example.

[0077] The third example shows a possible variation of the aerosol generation device 1. Specifically, in this example, the wall portion 112 is omitted from the second housing element 12, and the wall portion 111 of the first housing element 11 extends to the upper outer surface of the aerosol generation device 1. As a result, when the first housing element 11 and the second housing element 12 are in the closed position, the gap between the first housing element 11 and the second housing element 12 cannot extend to the outside of the aerosol generation device 1.

[0078] Additionally, in the third example, the inlet 141 is not a through-hole in either the first housing element 11 or the second housing element 12. Instead, a notch is provided in the second housing element 12 such that a gap is formed between the first housing element 11 and the second housing element 12 adjacent the attachment means 13 when the aerosol generating device is in the closed position.

[0079] FIG. 6 is a schematic diagram of an aerosol generating device 1 according to a fourth example, showing a further modification of the examples described above.

[0080] Specifically, in this example, the "alligator" configuration is replaced with a configuration in which the attachment means 13 is located near the end of the device. The end of the device has an outlet 142 for the air flow passage 14. In this example, the outlet 142 is a through-hole that penetrates the second housing element 12. This outlet 142 is indicated by a dashed line connecting the second housing element 12 above and below the air flow passage 14, as shown in FIG. 6 . Additionally, the inlet 141 is a gap between the first housing element 11 and the second housing element 12. Rather than opening the mouthpiece end of the aerosol-generating device 1 to replace a portion of the aerosol-generating substrate, in this example, the device 1 opens partially along its length near the inlet 141. This configuration reduces the length of the joint between the first housing element 11 and the second housing element 12 in the closed position, thereby reducing the length of the sealing member 16 required to seal the joint. Nevertheless, the sealing member 16 may be similar to that of the previous example.

Claims

1. 1. An aerosol generating device comprising a first housing element and a second housing element configured to move between an open position and a closed position, In the closed position, the first housing element and the second housing element together define an aerosol-generation chamber configured to surround a portion of the aerosol-generating substrate and further define an air flow path including an inlet, an outlet, and the aerosol-generation chamber; the first housing element and / or the second housing element includes a sealing member configured to seal at least a portion of the air flow path between the inlet and the outlet in the closed position; the first housing element and the second housing element are configured to move along an approaching direction to engage with each other to define the aerosol generation chamber; the sealing member includes a wall member extending in the approach direction; the first housing element and the second housing element are attached by a hinge; the outlet is a gap between the first housing element and the second housing element in the closed position, the gap corresponding to an open end of the air flow path; An aerosol generating device, wherein the first housing element or the second housing element includes a through hole connected to the inlet of the air flow path, the through hole being positioned between the hinge and the outlet.

2. one of the first housing element and the second housing element includes the wall member; the other of the first housing element and the second housing element includes a sliding contact wall extending in the approaching direction; the wall member is configured to slide against the sliding contact wall when the first housing element and the second housing element move to near the closed position; The aerosol generating device according to claim 1 .

3. 3. The aerosol generating device according to claim 1, wherein the wall member includes a first wall member extending along the closed end of the air flow passage.

4. 4. The aerosol generating device according to claim 1, wherein the wall member includes a second wall member extending along the air flow path.

5. An aerosol generating device according to any one of claims 1 to 4, wherein the wall member extends continuously from a first end at the open end of the air flow path around the aerosol generating chamber to a second end at the open end of the air flow path.

6. An aerosol generating device as described in any one of claims 1 to 5, wherein the device has an alligator configuration in which the mouthpiece end is configured to open around the hinge, and the first housing element or the second housing element extends beyond the hinge to provide a handle end.

7. 7. An aerosol generating device according to claim 1, wherein the first housing element includes an open-topped chamber configured to receive the portion of the aerosol-generating substrate, and the second housing element includes a movable cover for closing the chamber.

8. 8. The aerosol generating device of claim 7, wherein the first housing element includes a platform portion protruding from a main surface, the open-top chamber is formed in the platform portion, the movable cover is configured to engage with the platform portion and the main surface, and the sealing member is arranged on a side wall of the platform portion or on a surface of the movable cover configured to engage with the side wall of the platform portion.

9. 9. The aerosol generating device according to claim 7 or 8, wherein the first housing element includes a heating element disposed on a bottom surface of the open-top chamber.

10. An aerosol generating device as described in any one of claims 7 to 9, wherein the second housing element includes an inner surface arranged to face the upper open chamber in the closed position, the inner surface comprising a thermally conductive material.

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