Aerosol generating device with sleeve cover

Abstract

The present invention relates to an aerosol generating device having a sleeve cover. More specifically, the aerosol generating device (1) comprises an aerosol generating chamber (101) configured to receive and heat a substrate (2) to generate an aerosol, the aerosol generating chamber (101) comprising an upper portion (1011), a lower portion (1012), and an expansion mechanism (1013), and the cover (102) has a covered position and an uncovered position.

Description

[Technical Field]

[0001] The present disclosure relates to an aerosol-generating device in which an aerosol-generating substrate is heated to form an aerosol, and in particular to an aerosol-generating device having a sleeve cover. [Background technology]

[0002] The popularity and use of aerosol-generating devices (also known as heat-not-burn products or vaporizers or e-cigarettes) has grown rapidly over the past few years. A variety of devices and systems are available that heat or warm an aerosolizable substrate, as opposed to burning tobacco in traditional tobacco products.

[0003] Commonly available risk reduction or risk modification devices are substrate-heated aerosol generating devices or heat-and-burn devices. This type of device typically generates an aerosol or vapor by heating an aerosol substrate containing moist tobacco or other suitable aerosolizable material, typically to a temperature ranging from 150°C to 350°C. By heating, rather than burning or combusting, the aerosol substrate releases an aerosol containing the ingredients desired by the user but without the toxic and carcinogenic by-products of combustion and burning. Furthermore, aerosols produced by heating tobacco or other aerosolizable material typically do not contain the burnt or bitter taste resulting from combustion and burning, which can be unpleasant to users, and as a result, the substrate does not require sugars and other additives typically added to such materials to make the smoke and / or vapor more palatable to the user. Summary of the Invention [Problem to be solved by the invention]

[0004] In such devices, the substrate is typically contained within the aerosol-generation chamber for heating, and the user typically must press a button to eject the substrate from the aerosol-generation chamber after consumption in order to replace it with a new substrate. However, locating a button on the device can reduce access to the housing of the aerosol-generation device and can complicate operation of the device for the user. Therefore, it is desirable to provide a convenient method for replacing the aerosol substrate within the heating chamber. Additionally, it is also desirable to increase the aerosol yield from the aerosolizable material. [Means for solving the problem]

[0005] The present invention provides a smoking article for an aerosol-generating device that solves some or all of the above problems.

[0006] A first embodiment of the present invention is an aerosol generating device comprising: an aerosol-generation chamber configured to receive and heat a substrate to generate an aerosol, the aerosol-generation chamber comprising an upper portion, a lower portion, and an expansion mechanism, the aerosol-generation chamber being capable of being in a closed state in which the upper and lower surfaces substantially enclose a volume that contains the substrate for consumption, and an open state in which the upper and lower surfaces are spaced apart by the expansion mechanism, such that the substrate can be received by or removed from the chamber; - a cover having a covering position and an uncovering position, wherein when the cover is in the uncovering position, the volume inside the aerosol generation chamber is exposed and the aerosol generation chamber is in an open state, and when the cover is in the covering position, the aerosol generation chamber is covered by the cover and is in a closed state.

[0007] The extension mechanism improves the user's convenience in using and replacing the aerosol substrate. The chamber containing the substrate can be easily opened by simply sliding the cover. This provides an intuitive and robust method for replacing the substrate, and also provides a simple internal structure for the aerosol generating device.

[0008] According to a second embodiment, in the first embodiment, the expansion mechanism is configured with a repulsive magnet, spring, or clip that provides an expansion force to move the upper plane away from the lower plane when the cover is moved from the covering position to the non-covering position.

[0009] This arrangement allows for automatic opening of the aerosol generation chamber.

[0010] According to a third embodiment, in any one of the preceding embodiments, the cover engages with the upper portion so as to transition the aerosol generation chamber from an open state to a closed state, or vice versa, when the cover moves from a covered position to an uncovered position, or vice versa.

[0011] According to a fourth embodiment, in any one of the preceding embodiments, the cover is configured to slide over the body of the aerosol generating device and is slidably engaged with the upper part of the aerosol generating chamber, so that when the cover slides over the body, it can press down on or release the upper part to move the upper part closer to or away from the lower part via the extension mechanism.

[0012] According to a fifth embodiment, in any one of the preceding embodiments, the upper surface of the upper part is configured to connect with the cover, and the upper surface is an inclined and / or curved surface, such that the upper part can be pressed down so that the cover substantially surrounds the substrate in the covered position, and the pressure of the cover can be released by sliding the cover to its uncovered position.

[0013] According to a sixth embodiment, in the preceding embodiments, the expansion mechanism comprises a spring steel framework disposed between the upper and lower portions and configured to receive and hold the substrate.

[0014] According to a seventh embodiment, in the preceding embodiment, the spring steel framework comprises an ejection plate configured to at least partially push the substrate out of the aerosol-generation chamber when the aerosol-generation chamber is opened.

[0015] The ejection plate allows the substrate to be lifted off the heating element when the chamber is opened to allow the substrate to cool.

[0016] According to an eighth embodiment, in either the sixth or seventh embodiment, the spring steel framework is made from steel frames or plates having a predetermined angle, which can be compressed by an external force.

[0017] According to a ninth embodiment, in any one of the preceding embodiments, the aerosol-generation chamber comprises heating elements on the top and / or bottom for heating the substrate.

[0018] According to a tenth embodiment, in any one of the sixth to ninth embodiments, the mounting surface of the spring steel framework is attached to the upper part, and the holding surface of the spring steel framework for holding the substrate is positioned opposite the mounting surface, so that when the aerosol generation chamber is opened, the holding surface can bounce away from the heating element on the upper part.

[0019] This arrangement allows the substrate to be spaced away from the heating element when the chamber is opened to allow the substrate to cool.

[0020] According to an eleventh embodiment, in any one of the fifth to ninth embodiments, the ejection plate forms a leaf spring attached to the steel spring framework so as to push the substrate out of the steel spring framework.

[0021] According to a twelfth embodiment, in any one of the preceding embodiments, the spring steel framework is slidably attached to the top such that the spring steel framework is removable from the aerosol-generation chamber.

[0022] This arrangement allows the user to easily clean both the framework and the heating element.

[0023] According to a thirteenth embodiment, in any one of the preceding embodiments, the lower portion and / or the upper portion are pivotally hinged in the device.

[0024] According to a fourteenth embodiment, in any one of the preceding embodiments, the cover comprises a restricting portion for pushing the substrate into the aerosol-generation chamber and for maintaining the substrate completely within the aerosol-generation chamber.

[0025] This arrangement allows the substrate to be fixed and substantially contained within the aerosol-generation chamber for thorough heating.

[0026] According to a fifteenth embodiment, in any one of the preceding embodiments, the substrate is compressed when the aerosol-generation chamber is in a closed state.

[0027] This arrangement provides better aerosol generating performance of the substrate.

[0028] Preferred embodiments will now be described, by way of example only, with reference to the accompanying drawings, in which: [Brief explanation of the drawings]

[0029] [Figure 1] 1 is an exposed schematic (cross-sectional) view of an aerosol generating device having an expansion mechanism according to an exemplary embodiment of the present invention. [Figure 2]1 is a schematic diagram of an aerosol generating device having an extension mechanism and a substrate in an open state, according to an exemplary embodiment of the present invention. [Figure 3] 3a-3c show schematic and partial schematic (cross-sectional) views of an aerosol generation chamber of an aerosol generating device according to different exemplary embodiments of the present invention. [Figure 4] 4a and 4b show exposed schematic views (cross-sections) of an aerosol-generation chamber of an aerosol-generating device according to an exemplary embodiment of the present invention. [Figure 5] 5a-5c show partial schematic cross-sectional views of an aerosol generation chamber with a restriction of an aerosol generating device according to different exemplary embodiments of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0030] Preferred embodiments of the present invention will now be described in conjunction with the accompanying drawings.

[0031] As used herein, the terms "aerosol generating device," "vaporizer system," "inhaler," or "electronic cigarette" may include an electronic cigarette configured to deliver an aerosol, including a smoking aerosol, to a user.

[0032] The electronic cigarette 1 of the present invention has a generally elongated shape. The surface of the device 1 perpendicular to the insertion direction of the substrate 2 is the side surface of the aerosol-generating device 1, and the surface parallel to the insertion direction of the substrate 2 is the main surface. The surface of the mouthpiece perpendicular to the main surface of the device 1 is the top surface, and the opposite surface of the device 1 is the bottom surface. Figure 1 shows a schematic diagram of the device 1 looking at the main surface. The substrate 2 is inserted into the device from the side. The direction parallel to the insertion direction is the lateral direction, and the direction perpendicular to the insertion direction 21 is the longitudinal direction.

[0033] Referring to the drawings, and particularly to FIG. 1 , an electronic cigarette 1 for consuming a substrate 2 is shown in front view, i.e., a view from the main surface of the device 1. The electronic cigarette 1 can be used as a replacement for a traditional cigarette and comprises a cover 102 and a body 106. The cover 102 is slidably engaged with the body 106 via a slide track (not shown) and serves as a mouthpiece for the user. The cover 102 is arranged to slide longitudinally of the aerosol generating device 1. The body comprises an aerosol generating chamber 101, a LiPo battery 1018, a PCBA 1017 comprising a controller or CPU, and a USB-C connector 1063 for charging the LiPo battery 1061 and / or transmitting data to the device 1.

[0034] 1 and 2, aerosol-generation chamber 101 is disposed at or adjacent to the top end of the body of device 1. Sliding cover 102 has a covered position and an uncovered position. In the covered position, aerosol-generation chamber 101 may be covered or sleeved by cover 102. In the uncovered position, the space or interior volume of aerosol-generation chamber 101 is exposed for receiving and discarding substrate 2. For consumption, substrate 2 is contained within aerosol-generation chamber 101 for generating aerosol and is heated.

[0035] A perspective schematic diagram of an aerosol-generating substrate 2 is shown in FIG. 2. The substrate 2 may include, for example, nicotine or tobacco and an aerosol former. The tobacco may be in the form of various materials, such as shredded tobacco, granulated tobacco, tobacco leaf, and / or reconstituted tobacco. Suitable aerosol formers 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, esters such as triacetin, triethylene glycol diacetate, and triethyl citrate, glycerin, or vegetable glycerin). In some embodiments, the aerosol-generating agent may be glycerol, propylene glycol, or a mixture of glycerol and propylene glycol. The substrate 103 may also include at least one of a gelling agent, a binder, a stabilizer, and a humectant.

[0036] The substrate 2 is porous to allow air to flow through the substrate 2 and collect the aerosol. The substrate 2 may be, for example, foam or filled with strands or fibers. The substrate 2 may be formed into a stable shape by an extrusion and / or rolling process. The aerosol-generating substrate 2 may be molded to provide a single air passage on one side, or in a preferred embodiment, multiple air passages, more preferably on both sides, as shown in FIG. 1. These may be aligned with the air passages of the aerosol-generating device 1 to increase airflow through the aerosol-generating chamber 101. The substrate 103 is exposed with a bare outer surface. Alternatively, the substrate 2 may comprise a breathable wrapper covering at least a portion of the surface of the substrate 2. The wrapper may comprise, for example, paper and / or a nonwoven fabric.

[0037] In this embodiment, the substrate may have a generally flat rectangular parallelepiped or pod-like shape with dimensions of 18 x 12 x 1.2 mm, with the length, width, and depth of the rectangular parallelepiped each being selected, for example, within a range of ±40%. Generally, in preferred embodiments, the length of the substrate is between 40 and 10 mm, preferably between 30 and 12 mm, more preferably between 25 and 14 mm, and most preferably between 22 and 15 mm. In preferred embodiments, the width of the substrate is between 30 and 6 mm, preferably between 25 and 8 mm, more preferably between 20 and 9 mm, and most preferably between 16 and 9 mm. In preferred embodiments, the height of the substrate is between 3 and 0.5 mm, preferably between 2 and 0.6 mm, more preferably between 1.8 and 0.8 mm, and most preferably between 1.6 and 0.9 mm.

[0038] The length and / or width of the volume for accommodating the substrate 2 inside the aerosol-generation chamber 101 is preferably configured to be equal to or greater than the length of the substrate 2 in the longitudinal and lateral directions so that the substrate can be completely accommodated within the aerosol-generation chamber 101 when the cover 102 is in the covering position. The depth of the volume is equal to, and preferably smaller than, the depth of the substrate 2 to improve aerosol generation performance. In other words, the volume inside the aerosol-generation chamber 101 has an approximately rectangular parallelepiped shape corresponding to the shape of the substrate 2, e.g., 18 × 12 × 1.2 mm, and the length, width, and depth of the rectangular parallelepiped are each selected within a range of ±40%. In this case, the length and width of the volume inside the aerosol-generation chamber 107 are preferably greater than 18 mm and 12 mm, respectively, and the depth of the volume inside the aerosol-generation chamber 107 is preferably less than 1.2 mm. More specifically, in preferred embodiments, the length of the volume within the aerosol-generation chamber is between 41 and 10 mm, preferably between 31 and 12 mm, more preferably between 26 and 14 mm, and most preferably between 23 and 15 mm. In preferred embodiments, the width of the volume within the aerosol-generation chamber 101 is between 32 and 6 mm, preferably between 27 and 8 mm, more preferably between 23 and 9 mm, and most preferably between 20 and 9 mm. In preferred embodiments, the depth of the chamber 101 is between 2.9 and 0.5 mm, preferably between 1.9 and 0.6 mm, more preferably between 1.5 and 0.8 mm, and most preferably between 1.3 and 0.9 mm.

[0039] The aerosol generation chamber 101 comprises an upper portion 1011, a lower portion 1012, and an expansion mechanism 1013. When consumed, the substrate 2 is contained within a volume or space bounded by the upper portion 1011 and / or the lower portion 1012 (i.e., the major surface of the substrate 2 that has a relatively large area and faces the major surface of the substrate 2 that is parallel to the insertion direction of the substrate 2), together with other surfaces of the upper portion 1011 and / or the lower portion 1012 and / or the cover 102 (i.e., the side that has a relatively small area of ​​the substrate 2 and faces the side of the substrate 2 that is perpendicular and / or parallel to the insertion direction of the substrate 2), in this embodiment, three sides of the lower portion 1012 when the cover 102 is in the covering position, and the inner surface of the cover 1012. In particular, the substrate 2 is compressed by the internal flat surfaces 1014, 1015 defined by the upper portion 1011 and the lower portion 1012. At least one heating element 1016 is bounded by at least one of the flat surfaces 1014, 1015. Heating elements 1016 are disposed on each flat surface 1014, 1015 of the upper and lower portions 1011, 1012. In some embodiments, compression alone may be sufficient to cause an aerosol to be emitted from the substrate 2. However, in many embodiments, the heating elements 1016 are disposed to supply heat to the substrate 2 to generate the aerosol. In such embodiments, the application of pressure increases the yield of aerosol from the aerosol-generating substrate 2 compared to heating alone. In this embodiment, in a compression configuration with two heating elements 1016, the heating elements 1016 may be, for example, a plate with electrically powered resistive tracks.

[0040] Thus, the aerosol-generation chamber 101 can be in a closed state when the cover is in the uncovered position, i.e., when the upper and lower portions 1011, 1012 are substantially attached together and both substantially enclose the substrate 2 within the interior volume of the aerosol-generation chamber. More specifically, the planar surfaces 1014, 1015 of the upper and lower portions 1011, 1012 both substantially enclose and preferably compress the substrate 2.

[0041] In a preferred embodiment, when the aerosol-generation chamber 101 is in the closed state, the surface 1014 of the upper part 1011 contacts the surface of the lower part 1012. In particular, in this embodiment, the lower part 1012 has a rectangular parallelepiped cavity that forms at least a portion of the volume that accommodates the substrate 2. This volume is surrounded by surfaces 1041 and 1042 of the lower part 1012. The surface 104 of the lower part 1012 is not hollow and is approximately parallel to a plane 1015 of the lower part 1012, and contacts the surface 1014 of the upper part 1011 when the aerosol-generation chamber 101 is in the closed state. In some embodiments, an edge on one side of the upper surface 1011 opposite the hinge side has a narrow surface along a direction perpendicular to the insertion direction of the substrate 2, and although not shown, contacts the surface 1015 of the lower part 1012 when the aerosol-generation chamber 101 is in the closed state. Thus, in some embodiments, at least one flat surface of the upper portion 1011 contacts at least one flat surface of the lower portion 1012 when the aerosol-generation chamber 101 is in a closed state.

[0042] The expansion mechanism 1013 in the aerosol-generation chamber 101 is arranged in such a way that the aerosol-generation chamber 101 can be opened and expanded to an open state in which the upper portion 1011 and the lower portion 1012 are spaced apart from each other. More specifically, the upper portion 1011 is spaced apart from its closed position by the expansion mechanism 1013, where it is located when the aerosol-generation chamber 101 is in a closed state. More specifically, the flat surface 1016 of the upper portion 1011 and the flat surface 1016 of the lower portion 1012 are spaced apart from each other by the expansion mechanism 1013 so that the substrate 2 can be received by or removed from the aerosol-generation chamber 101.

[0043] 3a-3c, the upper portion 1011 is pivotally hinged to the body of the device 1, while the lower portion 1011 is fixed to the body of the device 1 or is integral with the housing of the body of the device 1. Heating plates 1016 (shown in black in the figures) are disposed on the inner flat surfaces 1014, 1015 of the upper and lower portions 1011, 1012, respectively. When consumed, the substrate 2 is compressed within the volume enclosed by the heating element 1016 by the closure of the upper and lower portions 1011, 1012. The closure of the upper and lower portions 1011, 1012 occurs by the sleeve-mounting of the cover 102.

[0044] Due to the location of the expansion mechanism 1013, the aerosol generation chamber 101, more specifically the upper portion in this embodiment, is gradually expanded by a repulsive or expanding force from the expansion mechanism 1013 upon release of the cover 102 from the covered position to the uncovered position. In one embodiment, as shown in FIG. 3a, the expansion mechanism 1013 may include two repulsive magnets 1021 positioned adjacent to the open side of the aerosol generation chamber 101 opposite the hinge side of the aerosol generation chamber 101. In another embodiment, as shown in FIG. 3b, the expansion mechanism 1013 may include a torsion spring 1022 disposed within or attached to the upper portion 1011 and the lower portion 1012. In a preferred embodiment, the expansion mechanism 1013 may be a spring steel framework 103. The spring steel framework 103 is configured to be installed between the upper portion 1011 and the lower portion 1012. The spring steel framework 103 has a book-like shape. Specifically, the spring steel framework 103 is made of a steel frame or plate having a predetermined angle large enough to insert and remove the substrate 2 into and from the aerosol-generation chamber 101. The spring steel framework 103 can be compressed by an external closing force due to the pressure of the upper and lower parts 1011, 1012 generated by the cover 102. The steel framework 103 can be removed from the aerosol-generation chamber 101 for cleaning. Slots (not shown) may be disposed on the upper and / or lower parts 1011, 1012 to secure the steel spring framework 103 by slidably fitting it into the slots. In a preferred embodiment, magnets may be disposed within the aerosol-generation chamber 101 to secure the steel spring framework 103. Seals (shown hatched in FIG. 3c) may be disposed on two, preferably three, sides around the heating element 1016 to maintain the substrate 2 within the heating element's area, insulate from heat, and guide generated smoke toward the outlet and / or inlet of the device 1.

[0045] An enlarged cross-sectional view of the aerosol generation chamber 101 with the steel spring framework 103 is shown within the dashed circle in Figure 3c. The upper portion 1011 is spaced apart from the lower portion 1012 by the expansion force exerted by the steel spring framework 103. A discharge plate (shown by a thicker line) is disposed inside the steel spring framework 103 (shown by a thicker line) and is configured to press the substrate 2 away from both the heating element 1016 and the reflector plate disposed within the chamber 101, so as to discard the substrate 2 from the heating element 1016 and peel it off for cooling. The discharge plate is a leaf spring made from a curved spring steel plate and attached to the steel spring framework 103.

[0046] If only one heating element 1016 is positioned on the flat surface 1014 of the upper portion 1011 or the flat surface of the lower portion 1012, the steel spring framework 103 may be attached only to the surface of the aerosol-generation chamber 101 having the heating element 1016, and may have slots or other fixing means to accommodate or hold the substrate 2. With this arrangement, when the aerosol-generation chamber 101 is in an open state, in other words when the flat surface 1014 of the upper portion 1011 is spaced apart from the flat surface of the lower portion 1012, the substrate 2 may also be spaced apart from the heating element 1016 for cooling.

[0047] 4a and 4b show a cross-sectional view of the aerosol-generation chamber 101 looking at a side view of the device 1 and a cross-sectional view of the aerosol-generation chamber 101 at section line aa (shown in dashed lines) looking at a top view embodiment.

[0048] Figure 4a shows the aerosol-generation chamber 101 in a closed state and the cover 102 in a covered position.

[0049] The surface of the upper portion 1011 configured to connect with the cover 102 is referred to as the upper surface of the upper portion 1011. The upper surface is an inclined and / or curved surface. The upper surface is inclined between the covered position and the uncovered position and / or has a curvature between the covered position and the uncovered position, so that the upper surface can be pressed down so that the cover 102 in the covered position substantially surrounds the substrate 2. In other words, the inclined and / or curved surface decreases in height from the covered position of the cover 102 to the uncovered position. More specifically, the inclined or curved, preferably inclined and curved, upper surface has a lower side closer to the mouthpiece side and a higher side opposite the lower side. That is, the higher side is closer to the covered position of the cover 102, and the lower side is closer to the uncovered position of the cover 102. The higher side descends across the upper portion 1011 toward the lower side. In other words, the lower side rises or rises beyond the upper portion 1011 toward the higher side. When in the covering position, the cover 102 connects to and presses against the higher side of the upper surface of the upper portion 1011. Due to the pressure from the cover 102 in the covering position, the substrate 2 is substantially surrounded and preferably compressed by the upper portion 1011 and the lower portion 1012, and the substrate cannot be discarded from and / or moved into the aerosol-generation chamber 101.

[0050] FIG. 4b shows the aerosol-generation chamber 101 in an open state and the cover 102 in an uncovered position.

[0051] The cover 102 is slid to an uncovered state. Specifically, the cover is moved to or beyond the lower side of the upper surface of the upper part 1011. As described above, the upper surface of the upper part 1011 is an inclined and / or curved surface. An imaginary plane 23 (shown by a dashed line in FIG. 4a ) connecting the lower and upper sides of the upper surface 1011 forms a predetermined angle ∠b with the sliding direction line 22 of the cover 102, i.e., the arc angle of the upper surface of the upper part 1011. The angle is arranged in such a way that when the cover 102 is slid to a position on the lower side of the upper surface, the exposed area or space of the aerosol-generation chamber 101 becomes large enough to allow the substrate 2 to be discarded from the aerosol-generation chamber 101. More specifically, the extension force of the extension mechanism 1013 lifts the open side of the aerosol-generation chamber 101 and opens it so that the substrate 2 can be discarded from the aerosol-generation chamber 101 by a user's fingertip at the hinge side of the aerosol-generation chamber 101.

[0052] To keep the substrate 2 completely within the aerosol-generation chamber 101, the cover 102 includes a restricting portion 1023 (shown as a dashed rectangle) for pushing the substrate 2 into the aerosol-generation chamber 101 from the uncovered position to the covered position, as shown in FIGS. 5a to 5c. The restricting portion 1012 is a protrusion provided on the inside of the cover at a position corresponding to the open side of the aerosol-generation chamber 101. A hollow portion is disposed in the upper portion 1011 and / or lower portion 1012 of the cover 102 at a position corresponding to or relative to the restricting portion 1012, so that the restricting portion 1012 can slide from its tip along the aerosol-generation chamber into the volume inside the aerosol-generation chamber 121. The protrusion 1023 forms an inclined surface for smoothly pushing the substrate 2 into the volume 121 enclosed by the upper portion 1011 and lower portion 1021, particularly the position where the heating element 1016 is located.

Claims

1. An aerosol generating device (1), comprising: an aerosol-generation chamber (101) configured to receive and heat a substrate (2) to generate an aerosol, said aerosol-generation chamber (101) comprising an upper part (1011), a lower part (1012) and an expansion mechanism (1013), said aerosol-generation chamber (101) being capable of being in a closed state in which a surface (1014) of said upper part (1011) and a surface (1015) of said lower part (1012) substantially enclose a volume for containing said substrate (2) for consumption thereof, and an open state in which said surface (1014) of said upper part (1011) and said surface (1015) of said lower part (1012) are spaced apart from each other by said expansion mechanism (1013), so that said substrate (2) can be received by or removed from said chamber (101); a cover (102) having a covering position and an uncovering position, wherein when the cover (102) is in the uncovering position, the volume inside the aerosol-generation chamber (101) is exposed and the aerosol-generation chamber (101) is in the open state, and when the cover (102) is in the covering position, the aerosol-generation chamber (101) is covered by the cover (102) and is in the closed state; An aerosol generating device (1) comprising:

2. The aerosol generating device (1) of claim 1, wherein the extension mechanism (1013) is constituted by a repulsive magnet (1021), a spring (1022), or a clip (103) that provides an extension force to move the surface (1014) of the upper part (1011) away from the surface (1015) of the lower part (1012) when the cover (102) is moved from the covering position to the non-covering position.

3. 3. The aerosol generating device (1) of claim 1 or 2, wherein the cover (102) engages with the upper portion (1011) so as to transition the aerosol generating chamber (101) from the open state to the closed state, or vice versa, when the cover (102) moves from the covered position to the uncovered position, or vice versa.

4. The aerosol generating device (1) of any one of claims 1 to 3, wherein the cover (102) is configured to slide on the main body (13) of the aerosol generating device (1) and is slidably engaged with the upper part (1011) of the aerosol generating chamber (101), so that when the cover (102) slides on the main body (13), it can push down on or release the upper part (1011) via the extension mechanism (1013) to move the upper part (1011) closer to or away from the lower part (1012).

5. An aerosol generating device (1) according to any one of claims 1 to 4, wherein the upper surface of the upper part (1011) is configured to connect with the cover (102), and the upper surface is an inclined and / or curved surface, so that the upper part (1011) can be pressed down so that the cover substantially surrounds the substrate (2) in the covered position, and the pressure of the cover (102) can be released by sliding the cover (102) to its uncovered position.

6. The aerosol generating device (1) according to any one of claims 1 to 5, wherein the expansion mechanism (1013) comprises a spring steel framework arranged between the upper part (1011) and the lower part (1012) and configured to receive and hold the substrate.

7. 7. The aerosol generating device (1) of claim 6, wherein the spring steel framework comprises an ejection plate (1031) configured to at least partially push the substrate out of the aerosol generating chamber (101) when the aerosol generating chamber (101) is opened.

8. 8. The aerosol generating device (1) according to claim 6 or 7, wherein the spring steel framework is made of steel frames or plates with a predetermined angle and can be compressed by an external force.

9. The aerosol generating device (1) according to any one of claims 1 to 8, wherein the aerosol generating chamber (101) comprises a heating element (1016) on the upper part (1011) and / or the lower part (1012) for heating the substrate (2).

10. An aerosol generating device (1) according to claim 9, dependent on any one of claims 6 to 8, wherein an attachment surface of the spring steel framework (103) is attached to the upper part (1011), and a holding surface of the spring steel framework for holding the substrate is arranged opposite the attachment surface, so that when the aerosol generating chamber (101) is opened, the holding surface can bounce away from the heating element (1016) of the upper part (1011).

11. An aerosol generating device (1) as described in claim 7, wherein the discharge plate (1031) forms a leaf spring attached to the spring steel framework (103) so as to push the substrate (2) out of the spring steel framework (103).

12. 12. The aerosol generation device (1) of any one of claims 6 to 8, 10 and 11, wherein the spring steel framework (103) is slidably attached to the upper part (1011) such that the spring steel framework (103) is removable from the aerosol generation chamber (101).

13. An aerosol generating device according to any one of claims 1 to 12, wherein the lower part (1012) and / or the upper part (1011) are pivotally hinged in the device.

14. An aerosol generating device as described in any one of claims 1 to 13, wherein the cover (102) has a restricting portion (1023) for pushing the substrate (2) into the aerosol generating chamber (101) and maintaining the substrate (2) completely within the aerosol generating chamber (101).

15. The aerosol generating device according to any one of claims 1 to 14, wherein the substrate (2) is compressed when the aerosol generating chamber (101) is in the closed state.

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