Aerosol generating product containing cavity and device thereof

Abstract

The utility model discloses an aerosol generating product containing cavity and a device thereof, the containing cavity is used for receiving an aerosol generating product from one end, and the aerosol generating product located in the containing cavity is provided with a central axis. The containing cavity comprises a containing cavity top end used for allowing the aerosol generating product to be inserted therein, a containing cavity wall used for surrounding the aerosol generating product and a containing cavity bottom end used for limiting the aerosol generating product, and a part of the containing cavity wall converges to form a fixing part. The fixing part comprises at least one clamping part and at least one non-clamping part which are used for clamping at least one part of the aerosol generating product, and the minimum radial distance between the clamping part and the central axis is smaller than or equal to the minimum radial distance between the top end of the containing cavity and the central axis. Smooth transition is achieved from the fixing part to the top end of the containing cavity.

Description

Technical Field

[0001] This patent relates to the field of novel tobacco technology, and in particular to an aerosol-generating product containment cavity and an aerosol-generating device thereof. Background Technology

[0002] In recent years, with people paying increasing attention to health, people have realized that traditional cigarettes have certain health hazards, and the impact of traditional cigarettes on health and the environment has gradually received attention from countries around the world.

[0003] Existing heated tobacco products provide users with an aerosol for inhalation by heating an aerosol generator. The aerosol generator is typically inserted into a heating chamber. The aerosol generator is usually presented in the form of a processed cigarette. In existing technology, a fixing groove is provided inside the heating chamber to secure the aerosol generator; however, the design of this groove easily damages the outer packaging of the aerosol generator and hinders its insertion, causing considerable inconvenience in use.

[0004] Therefore, in order to improve existing technologies, it is necessary to develop a new type of aerosol-generated product containment cavity. Utility Model Content

[0005] The purpose of this invention is to improve the existing technology and to develop a new type of aerosol-generated product containment cavity.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An aerosol-generating article receiving cavity for receiving an aerosol-generating article from one end, the aerosol-generating article located within the cavity having a central axis, the cavity including a cavity top for receiving insertion of the aerosol-generating article, a cavity wall for surrounding the aerosol-generating article, and a cavity bottom for limiting the aerosol-generating article, a portion of the cavity wall converging to form a fixing portion, the fixing portion including at least one clamping portion for clamping at least a portion of the aerosol-generating article and at least one non-clamping portion, the minimum radial distance between the clamping portion and the central axis being less than or equal to the minimum radial distance between the cavity top and the central axis, and the fixing portion smoothly transitioning to the cavity top in the axial direction.

[0008] Furthermore, the aerosol generating article held by the clamping part cannot completely fill the cross-sectional area of ​​the fixing part, and there is a space between the non-clamping part and the outer surface of the aerosol generating article as a channel for airflow.

[0009] Further, the fixed part is arranged at the bottom end of the accommodating cavity wall, and the bottom end of the accommodating cavity has the same shape as the cross section of the fixed part.

[0010] Further, the fixed part is arranged at the non-end part of the accommodating cavity wall, and the fixed part is smoothly connected to the bottom end of the accommodating cavity.

[0011] Further, the projection area of the cross section of the fixed part is within the projection area of the top end of the accommodating cavity.

[0012] Further, the projection area of the cross section of the fixed part partially exceeds the projection area of the top end of the accommodating cavity.

[0013] Further, at least a part of the projection area of the bottom end of the accommodating cavity exceeds the projection area of the top end of the accommodating cavity.

[0014] Further, the shape of the bottom end of the accommodating cavity is the same as the cross section of the fixed part.

[0015] Further, the cross section of the fixed part is composed of at least one curved line and / or at least one straight line.

[0016] Further, the cross section of the fixed part is circular, elliptical, olive-shaped, track-shaped, rounded quadrilateral, or sector-shaped.

[0017] Further, after the aerosol generating article is inserted into the accommodating cavity, the narrowest cross section of the aerosol generating article is S', the narrowest cross section of the fixed part is S, and the fixed part satisfies 1.05·S'≤S≤1.10·S', 1.10·S'≤S≤1.20·S', 1.20·S'≤S≤1.30·S', 1.30·S'≤S≤1.40·S', or 1.40·S'≤S≤1.50·S'.

[0018] Further, the diameter of the aerosol generating article in a natural state is d, and the diameter D of the top end of the accommodating cavity is set to d+0.2mm≤D≤d+2mm.

[0019] Further, the accommodating cavity wall includes n fixed parts, the fixed parts are arranged with a space therebetween, and the fixed parts are smoothly connected, and n≥2.

[0020] Further, the fixed parts have an angle α between the axial projections thereof,

[0021] Further, the bottom end of the accommodating cavity is provided with a ventilation part for guiding air flowing through the non-clamping part to the bottom end of the aerosol generating article.

[0022] Further, the accommodating cavity includes a part in the form of a Venturi tube.

[0023] An aerosol generating device, comprising a heating accommodation cavity, a power supply, and a heating element, wherein the heating accommodation cavity is the accommodation cavity of any one of the above, for accommodating an aerosol generating article in operation, the power supply is configured to provide electric energy to the heating element in operation, and the heating element is in thermal contact with the aerosol generating article.

[0024] Further, the aerosol generating device further comprises a sensor configured to detect whether the aerosol generating article reaches a working position in the accommodation cavity.

[0025] Further, the heating element is an external heating element, and the heating element is arranged on the clamping portion.

[0026] The aerosol generating article accommodation cavity disclosed in the patent has the advantages of convenient production and low cost compared with the existing accommodation cavity. The insertion of the aerosol generating article into the accommodation cavity is smooth, and at the same time, the blank area on the outer side of the aerosol generating article is ensured to remain as an airflow channel to provide sufficient airflow for the aerosol generating article and to perform heat insulation on the outside of the aerosol generating article. In addition, the arrangement of the fixing portion can also make the airflow be extruded, the airflow be accelerated, and the pressure be small. In this section, the heat on the pipe wall of the accommodation cavity can be quickly absorbed and utilized for preheating. This is conducive to ensuring the heat insulation between the outer shell and the heating core area.

[0027] When cooperating with the heating element, the arrangement of the fixing portion can also optimize the effect of heating the aerosol generating article. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above technical content and the following specific implementation manner of the utility model will be better understood when reading in combination with the drawings. It should be noted that the drawings are only examples of the claimed technical solution. In the drawings, the same reference numerals represent the same or similar elements.

[0029] Figure 1-A is a top view of the aerosol generating article accommodation cavity of an embodiment of the utility model;

[0030] Figure 1-B is Figure 1-A is a bottom view of the accommodation cavity shown in FIG. 1;

[0031] Figure 2-A is Figure 1-A is a sectional view of the accommodation cavity in the direction of arrow A-A shown in FIG. 1;

[0032] Figure 2-B is Figure 1-B is a sectional view of the accommodation cavity in the direction of arrow B-B shown in FIG. 1;

[0033] Figure 3-A is Figure 1-ACross-sectional view of the accommodation cavity in the direction of the arrow A-A in the working state of the aerosol-generating device;

[0034] Figure 3-B is Figure 1-B Cross-sectional view of the accommodation cavity in the direction of the arrow B-B in the working state of the aerosol-generating device;

[0035] Figure 4 is Figure 1-A Perspective view of the accommodation cavity and cross-sectional view of the top end and the bottom end of the corresponding accommodation cavity;

[0036] Figure 5 is a perspective view of the accommodation cavity and cross-sectional view of the top end and the bottom end of the corresponding accommodation cavity according to an embodiment of the utility model;

[0037] Figure 6 is a perspective view of the accommodation cavity and cross-sectional view of the top end and the bottom end of the corresponding accommodation cavity according to an embodiment of the utility model;

[0038] Figure 7 is a perspective view of the accommodation cavity and cross-sectional view of the top end and the bottom end of the corresponding accommodation cavity according to an embodiment of the utility model;

[0039] Figure 8 is Figure 7 Top view of the accommodation cavity;

[0040] Figure 9-A is Figure 8 Cross-sectional view of the accommodation cavity in the direction of the arrow C-C;

[0041] Figure 9-B is Figure 8 Cross-sectional view of the accommodation cavity in the direction of the arrow D-D;

[0042] Figure 10 is a perspective view of the accommodation cavity and cross-sectional view of the top end and the bottom end of the corresponding accommodation cavity according to an embodiment of the utility model, wherein α = 90 °;

[0043] Figure 11-A is a cross-sectional view of the accommodation cavity of the aerosol-generating article according to an embodiment of the utility model;

[0044] Figure 11-B is Figure 10 Cross-sectional view of the accommodation cavity in the axial vertical direction of -A.

[0045] Wherein, the reference signs are explained as follows:

[0046] Accommodation cavity 1

[0047] Top end of the accommodation cavity 101

[0048] Accommodation cavity wall 102

[0049] Accommodating cavity bottom end 103

[0050] Fixed portion 104

[0051] Clamping portion 105

[0052] Non-clamping portion 106

[0053] Airflow passage 110

[0054] Aerosol generating article 2

[0055] Heating element 3

[0056] Housing 4 DETAILED DESCRIPTION

[0057] The detailed features and advantages of the present application will be described in the following detailed description of the present application, and the content of the present application is sufficient for those skilled in the art to understand the technical content of the present application and to implement it, and according to the present specification, claims and drawings, those skilled in the art can easily understand the related purposes and advantages of the present application.

[0058] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0059] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product is usually placed during use, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present patent.

[0060] In the description of the present specification, the end of the aerosol generating article and the aerosol generating device closer to the user during operation is referred to as "upper" or "top", and the end farther from the user during operation is referred to as "lower" or "bottom".

[0061] In the description of the present specification, "axial" or "shaft" generally refers to the shaft in the direction from "top" to "bottom".

[0062] In the description of the present specification, when a certain part "includes" a certain component, unless there is a description of the opposite characteristics, it means that the part can also include other components, and does not exclude other components. In addition, the terms "unit", "module" and the like described in the specification refer to a unit that performs at least one function or action, and can be implemented in hardware or software form, or in a combination of hardware and software.

[0063] In the description of the specification, the aerosol generating article can be considered as a cylinder with an axis passing through the center of the bottom surface of the aerosol generating article and perpendicular to the bottom surface. When the aerosol generating article is installed in the accommodation cavity, the deformation of the aerosol generating article does not affect the relative position of the axis.

[0064] In the description of the specification, the "radial distance of xx from the central axis" refers to the straight line distance from xx to the center point of the same axial position on the central axis when xx is a point, and refers to the set of straight line distances from any point on xx to the center point of the same axial position when xx is a radial line segment (range). The "minimum radial distance of xx from the central axis" generally refers to the minimum distance of any point on xx from the central axis, and the "maximum radial distance" is the same.

[0065] To make the purpose, technical solutions and advantages of the patent more clear, the embodiments of the patent will be further described in detail below with reference to the drawings.

[0066] The patent discloses an aerosol generating article accommodation cavity 1 for receiving an aerosol generating article 2 from one end. Optionally, the accommodation cavity 1 is fixed in a housing 4, which can be held by a user when in use.

[0067] The aerosol generating article 2 is a substrate including a smokeable material such as tobacco that can generate a smokeable flavor. The aerosol generating article 2 can include tobacco.

[0068] It will be apparent to those skilled in the art that other embodiments can use other forms of aerosol generating articles. For example, the aerosol generating article can be a solid aerosol generating article, or the aerosol generating article can include both solid and liquid components. The aerosol generating article can include a tobacco-containing material that contains volatile tobacco flavor compounds that are released from the substrate upon heating. The aerosol generating article can include a non-tobacco material. The aerosol generating article can further include an aerosol former. Examples of suitable aerosol formers are glycerol and propylene glycol.

[0069] If the aerosol-generating article is a solid aerosol-generating article, the solid aerosol-generating article can comprise, for example, one or more of a powder, a granule, a pellet, a shard, a strand, a strip or a sheet of material containing one or more of herbal plant leaf, tobacco leaf, tobacco rib, reconstituted tobacco, homogenised tobacco, extruded tobacco, cast leaf tobacco and expanded tobacco. The solid aerosol-generating article can be in loose form, or can be provided in a suitable container or cartridge. Optionally, the solid aerosol-generating article can contain additional tobacco or non-tobacco volatile flavour compounds that are released upon heating of the substrate. The solid aerosol-generating article can also contain capsules, for example containing additional tobacco or non-tobacco volatile flavour compounds, and such capsules can melt during heating of the solid aerosol-generating article.

[0070] In particular, homogenised tobacco refers to a material formed by agglomerating particulate tobacco. The homogenised tobacco can be in the form of a sheet. It can be formed by agglomerating particulate tobacco obtained by grinding or otherwise comminuting one or both of tobacco lamina and tobacco stems. Alternatively or additionally, the sheet of homogenised tobacco material can include one or more of tobacco dust, tobacco fines and other particulate tobacco by-products formed during, for example, handling, manipulation and transportation of the tobacco. The sheet of homogenised tobacco material can include one or more inherent binders that are tobacco endogenous binders, one or more extrinsic binders that are tobacco exogenous binders, or a combination thereof, to help agglomerate the particulate tobacco; alternatively or additionally, the sheet of homogenised tobacco material can include other additives including, but not limited to, tobacco and non-tobacco fibres, aerosol formers, humectants, plasticisers, flavourants, fillers, aqueous and non-aqueous solvents and combinations thereof.

[0071] Optionally, the solid aerosol-generating article can be provided on or embedded in a thermally stable carrier. The carrier can take the form of a powder, a granule, a pellet, a shard, a strand, a strip or a sheet. Alternatively, the carrier can be a tubular carrier having a thin layer of solid substrate deposited on an inner surface thereof or on an outer surface thereof or on both the inner and outer surfaces thereof. Such a tubular carrier can be formed from, for example, a paper or paper-like material, a non-woven carbon fibre mat, a low mass open mesh metallic screen or a perforated metal foil or any other thermally stable polymeric substrate.

[0072] The solid aerosol-generating article is also capable of being deposited on a surface of a carrier in the form of, for example, a sheet, a foam, a gel or a slurry. The solid aerosol-generating article can be deposited on the entire surface of the carrier, or alternatively, can be deposited in a pattern so as to provide for non-uniform flavour delivery during use.

[0073] The receiving cavity 1 comprises a receiving cavity top end 101 for receiving the aerosol generating article 2, a receiving cavity wall 102 for surrounding the aerosol generating article 2, and a receiving cavity bottom end 103 for limiting the aerosol generating article 2. A portion of the receiving cavity wall 102 converges to form a fixing portion 104 for fixing the aerosol generating article 2 while forming an airflow passage 110 around the aerosol generating article 2. Since the fixing portion 104 smoothly transitions to the receiving cavity top end 101 and / or the receiving cavity bottom end 103, the receiving cavity 1 has different cross-sectional shapes at different axial positions, and the cross-sectional shapes maintain a smooth gradient trend in the axial direction. Thus, during the process of inserting the aerosol generating article 2 into the receiving cavity 1, the initial insertion is relatively smooth, and as the insertion depth increases, the aerosol generating article 2 is deformed by being squeezed by the fixing portion 104. The aerosol generating article 2 located in the receiving cavity 1 has a central axis γ (see FIGS. 3-4 and 9-10).

[0074] The cross-sectional area of the aerosol generating article 2 in a natural state is S”, and after being inserted into the receiving cavity 1, the narrowest cross-sectional area of the aerosol generating article 2 after being squeezed and deformed is S’, the minimum cross-sectional area of the fixing portion 104 is S, the cross-sectional area of the receiving cavity top end 101 is S1, and the cross-sectional area of the receiving cavity bottom end 103 is S2.

[0075] The cross-sectional shape of the fixing portion 104 can be composed of at least one curved line and / or at least one straight line. For example, the cross-sectional shape of the fixing portion 104 can be circular, elliptical, olive-shaped, racetrack-shaped, rounded quadrilateral, or sector-shaped, etc. Alternatively, the fixing portion 104 can be provided in an axisymmetric shape.

[0076] The fixing portion 104 comprises at least one clamping portion 105 for clamping at least a portion of the aerosol generating article 2 and at least one non-clamping portion 106. The distance between the at least one clamping portion 105 and the axis of the receiving cavity 1 should be less than or equal to the radius of the aerosol generating article 2, and the distance between the at least one non-clamping portion 106 and the outer surface of the aerosol generating article 2 should exist. The minimum radial distance between the clamping portion 105 and the central axis γ is less than the minimum radial distance between the receiving cavity top end 101 and the central axis γ. Alternatively, the minimum radial distance between the clamping portion 105 and the central axis γ is equal to the minimum radial distance between the receiving cavity top end 101 and the central axis γ.

[0077] Optionally, the cross-sectional area of the fixed portion 104 is smaller than the cross-sectional area of the top end 101 and / or the bottom end 103 of the accommodation cavity. In addition, the shape of the fixed portion 104 can ensure that the aerosol generating article 2 clamped by the clamped portion 105 cannot completely fill the cross-sectional area of the fixed portion 104, and there is a space between the non-clamped portion 106 and the outer surface of the aerosol generating article 2 as a passage for air flow. Preferably, the fixed portion 104 satisfies S' < S. Preferably, S satisfies 1.05·S' ≤ S ≤ 1.10·S', 1.10·S' ≤ S ≤ 1.20·S', 1.20·S' ≤ S ≤ 1.30·S', 1.30·S' ≤ S ≤ 1.40·S', or 1.40·S' ≤ S ≤ 1.50·S'.

[0078] Preferably, the fixed portion 104 satisfies S ≤ 0.8·S1. The shape of the cross section of the fixed portion 104 can ensure that the deformed aerosol generating article 2 cannot completely fill the cross-sectional area, and there is a residual blank area at the splicing position of the multiple lines of the cross section as a passage for air flow.

[0079] Optionally, the accommodation cavity wall 102 includes n fixed portions 104 (n ≥ 2), which are arranged separately and smoothly transitioned between the fixed portions 104. For example, a part of the accommodation cavity wall 102 can form a wave-like shape. Preferably, the fixed portions 104 are rotationally staggered, that is, there is an angle α between the axial projections of the fixed portions 104, Air can flow through the non-clamped portions 106 of different fixed portions 104 to the bottom of the accommodation cavity 1.

[0080] As shown in FIGS. 1-6, in a first embodiment, the fixed portion 104 can be arranged at the bottom end of the accommodation cavity wall 102. In this case, the shape of the bottom end 103 of the accommodation cavity is the same as the cross section of the fixed portion 104, that is, the shape of the bottom end 103 of the accommodation cavity is different from the shape of the top end 101 of the accommodation cavity, and the area of the bottom end 103 of the accommodation cavity is smaller than the area of the top end 101 of the accommodation cavity. The top end 101 of the accommodation cavity can be a regular circle with a diameter larger than that of the aerosol generating article 2. For example, assuming that the diameter of the aerosol generating article 2 in a natural state is d, the diameter D of the top end 101 of the accommodation cavity is set to d + 0.2 mm ≤ D ≤ d + 2 mm to ensure smooth insertion and the entry of the top air flow.

[0081] As shown in FIGS. 1-6, in a first embodiment, the fixed portion 104 can be arranged at the bottom end of the accommodation cavity wall 102. In this case, the shape of the bottom end 103 of the accommodation cavity is the same as the cross section of the fixed portion 104, that is, the shape of the bottom end 103 of the accommodation cavity is different from the shape of the top end 101 of the accommodation cavity, and the area of the bottom end 103 of the accommodation cavity is smaller than the area of the top end 101 of the accommodation cavity. The top end 101 of the accommodation cavity can be a regular circle with a diameter larger than that of the aerosol generating article 2. For example, assuming that the diameter of the aerosol generating article 2 in a natural state is d, the diameter D of the top end 101 of the accommodation cavity is set to d + 0.2 mm ≤ D ≤ d + 2 mm to ensure smooth insertion and the entry of the top air flow. Figure 1-A and 1-B As shown in FIGS. 1-6, in a first embodiment, the fixed portion 104 can be arranged at the bottom end of the accommodation cavity wall 102. In this case, the shape of the bottom end 103 of the accommodation cavity is the same as the cross section of the fixed portion 104, that is, the shape of the bottom end 103 of the accommodation cavity is different from the shape of the top end 101 of the accommodation cavity, and the area of the bottom end 103 of the accommodation cavity is smaller than the area of the top end 101 of the accommodation cavity. The top end 101 of the accommodation cavity can be a regular circle with a diameter larger than that of the aerosol generating article 2. For example, assuming that the diameter of the aerosol generating article 2 in a natural state is d, the diameter D of the top end 101 of the accommodation cavity is set to d + 0.2 mm ≤ D ≤ d + 2 mm to ensure smooth insertion and the entry of the top air flow.

[0082] Figure 4 In particular, the cross-sectional shape of the fixed portion 104 is a closed symmetrical shape formed by a straight line and an arc line.

[0083] As shown in Figure 2-A and 3-A , the arc-shaped cross section of the fixed part 104 forms a clamping part 105, and the radial distance between any point on the clamping part 105 and the central axis γ is less than the original radius of the aerosol generating article 2, so that the aerosol generating article 2 is pressed by the clamping part 105 when inserted, thereby playing a fixing function.

[0084] As shown in Figure 2-B and 3-B , the clamping angle part of the fixed part 104 forms a non-clamping part 106, which cannot be filled by the aerosol generating article 2, so that an airflow passage 110 can be formed. Air enters from the top end 101 of the containing cavity, flows through the smooth transition of the containing cavity wall 102, and finally converges at the fixed part 104 (the bottom end 103 of the containing cavity), and enters the inside of the aerosol generating article 2 through the ventilation part of the bottom end 103 of the containing cavity. The aerosol generated by the aerosol generating article 2 under the heating of the heating element 3 is carried to the user by the airflow. The ventilation part can be embodied in various forms, such as a guide groove provided on the surface of the bottom of the containing cavity, a ventilation hole provided on the corresponding position of the bottom of the containing cavity, or a hollow guide groove provided on the bottom of the containing cavity, etc.

[0085] Figure 5 In the third embodiment, the cross-sectional shape of the fixed part 104 is a closed symmetrical racetrack shape formed by a straight line and an arc line. The radial distance between any point on the straight line part and the central axis γ is less than the radius of the aerosol generating article 2, and the straight line part forms a clamping part 105 to press the aerosol generating article 2, while the arc-shaped part forms a non-clamping part 106 to form an airflow passage 110.

[0086] Figure 6 In the fourth embodiment, the shape of the top end 101 of the containing cavity is a regular circle slightly larger than the diameter of the aerosol generating article 2, and the cross-sectional shape of the fixed part 104 and the bottom end 103 of the containing cavity is a non-axially symmetrical sector. The radial distance between any point on the two straight line parts and the central axis γ is less than the radius of the aerosol generating article 2. The two straight line parts and the arc-shaped part form a clamping part 105 to press the aerosol generating article 2, while the sharp angle part formed by the two straight line parts forms a non-clamping part 106 to form an airflow passage 110.

[0087] If the fixed part 104 is provided at the non-end part of the containing cavity wall 102, the fixed part 104 is smoothly transitioned to the bottom end 103 of the containing cavity. As shown in Figure 7 the second embodiment, the fixed part 104 is provided at the non-end part of the containing cavity wall 102, and the whole presents a form of a Venturi tube. Optionally, the fixed part 104 is provided at 1 / 2 of the containing cavity wall 102. Optionally, the fixed part 104 is provided at the lower 1 / 3 of the containing cavity wall 102.

[0088] like Figure 8 As shown, the projected position of the fixing part 104 is completely located inside the projected positions of the top end 101 and / or the bottom end 103 of the receiving cavity. However, at least a portion of the projected area of ​​the bottom end 103 of the receiving cavity may exceed the projected area of ​​the top end 101 of the receiving cavity, for example, the non-clamping part 106 may exceed the projected area of ​​the top end 101 of the receiving cavity.

[0089] like Figure 9-A The aerosol-generating product 2 is inserted into the receiving cavity 1 to reach the working state, and the clamping part 105 fixes the cigarette.

[0090] like Figure 9-B The diagram shows the airflow path. Because the cavity wall 102 tightens at the fixing part 104 compared to the airflow inlet (e.g., the top of the cavity 101), the airflow is compressed at the fixing part 104, resulting in increased airflow speed and reduced pressure. When the airflow passes through the non-clamping part 106, it can quickly absorb and utilize the heat from the cavity wall 102 and / or the surface of the aerosol-generating product 2 for preheating. Since this specific embodiment uses an internal heating element 3, meaning that the heating element 3 and the interior of the aerosol-generating product 2 are in thermal contact during operation, the airflow path design in the cavity 1 is beneficial for heat insulation of the exterior of the aerosol-generating product 2, preventing burns to the user during use.

[0091] like Figure 10 The diagram shows a receiving cavity 1 in one embodiment. Two fixing portions 104 are provided on the cavity wall 102, with an axial angle α between them. α = 90°. The two fixing portions 104 are identical elliptical in shape, each having two narrow sides forming clamping portions 105 to hold the cigarette, and two wide sides forming non-clamping portions 106, which are part of the airflow channel. A section of the cavity wall 102, identical in shape to the cavity top end 101, separates the two fixing portions 104. The cavity wall 102 has a smooth transition from the cavity top end 101 to the cavity bottom end 103.

[0092] like Figure 11-A The aerosol generating product 2 is inserted into the receiving cavity 1 to reach the working state. Two fixing parts 104 are provided on the wall 102 of the receiving cavity. There is no axial angle between the fixing parts 104. The clamping part 105 of each fixing part 104 clamps the cigarette.

[0093] like Figure 11-BThe schematic path of the airflow is shown. The air enters from the gap between the top end 101 of the containing cavity and the aerosol generating article 2, and flows along the containing cavity wall 102. Because the containing cavity wall 102 is tightened at the fixed portion 104 compared to the airflow inlet (for example, the top end 101 of the containing cavity), the airflow is squeezed at the fixed portion 104, the airflow is accelerated, and the pressure is reduced. The airflow can quickly absorb and utilize the heat on the containing cavity wall 102 and / or the surface of the aerosol generating article 2 to preheat when flowing through the non-clamping portion 106. The airflow is accelerated multiple times by passing through two fixed portions 104, and further optimized heat insulation and air increase technical effects are obtained on the basis of the previous embodiment.

[0094] The patent also discloses an aerosol generating device, comprising the above-mentioned containing cavity 1, a power supply (not shown in the figure), and a heating element 3, wherein the containing cavity 1 is used to accommodate the aerosol generating article 2 during work, the power supply is used to provide electric energy to the heating element 3 during work, and the heating element 3 is in thermal contact with the aerosol generating article 2.

[0095] Preferably, after the aerosol generating article 2 is inserted into the containing cavity 1 to the desired position, the fixed portion 104 of the containing cavity 1 can cooperate with the aerosol generating article 2 to achieve the best fixing effect and form a complete airflow channel 110. Therefore, the aerosol generating device can further comprise a sensor for detecting whether the aerosol generating article 2 reaches the working position in the containing cavity 1.

[0096] The forms of the heating elements of the respective heating portions can be the same or different. The form of the heating element referred to herein includes not only the type of the heating element, but also the structure, the setting position (end heating, internal heating, external heating, etc.) of the heating element, and the like. For example, one of the heating portions can adopt an internal resistance heating mode (for example, a heating needle), and the other heating portion can adopt an external electromagnetic heating mode (for example, an electromagnetic heating tube), and of course other modes can also be adopted, which are not listed one by one here.

[0097] Further, the specific structure of each heating portion is not limited in the present application, and can be internal heating (such as a heating needle, a heating sheet, etc.), external heating (such as a heating tube, etc.), end heating (such as a heating disc placed at the end, etc.), or mixed heating of the above modes, and the like.

[0098] Further, in the present application, the form of heating of the aerosol- generating article within each heating portion is not limited. For example, the heating element in the heating portion can be in the form of electrical resistance heating, preferably the electrical heating element comprises an electrically resistive material. Suitable electrically resistive materials include, but are not limited to, semiconductors such as doped ceramics, "conductive" ceramics (e.g. molybdenum disilicide), carbon, graphite, metals, metal alloys and composite materials made from ceramic and metallic materials. Such composite materials can comprise doped or undoped ceramics. Examples of suitable doped ceramics include doped silicon carbides. Examples of suitable metals include titanium, zirconium, tantalum and platinum group metals. Examples of suitable metal alloys include stainless steel, Constantan, nickel-containing alloys, cobalt-containing alloys, chromium-containing alloys, aluminium-containing alloys, titanium-containing alloys, zirconium-containing alloys, hafnium-containing alloys, niobium-containing alloys, molybdenum-containing alloys, tantalum-containing alloys, tungsten-containing alloys, tin-containing alloys, gallium-containing alloys, manganese-containing alloys and iron-containing alloys, as well as nickel-, iron-, cobalt-based superalloys, stainless steel, iron-aluminium-based alloys and iron-manganese-aluminium-based alloys. In composite materials, the electrically resistive material can optionally be embedded in, encapsulated by or coated by an insulating material, or vice versa, depending on the kinetics of energy transfer and the desired external physico-chemical properties. The heating element can comprise a metal etched foil which acts as an insulator between two layers of inert material. In that case, the inert material can comprise a Kapton® or mica foil. Alternatively, the electric heating element can also be an infrared heating element, a photonic source or an inductive heating element, etc.

[0099] Further, the heating element can take any suitable form. For example, the electric heating element can take the form of a heating blade. The electric heating element can take the form of a sleeve or substrate with different electrically conductive portions or a resistive metal tube. If the aerosol-generating article is a liquid provided in a container, the container can incorporate a disposable heating element. One or more heating needles or rods which travel through the centre of the aerosol-generating article can be used. The electric heating element can be a disc (end) heating element or a combination of disc heating elements and heating needles or rods. The electric heating element can comprise a flexible sheet of material arranged to surround or partially surround the aerosol-generating article. Other possibilities include heating wires or filaments, for example Ni-Cr, platinum, tungsten or alloy wires, or heating plates. Optionally, the heating element can be deposited in or on a hard carrier material.

[0100] The heat sink or heat reservoir can be arranged so that it is in direct contact with the aerosol generating article and can transfer the stored heat directly to the substrate. Alternatively, the heat stored in the heat sink or heat reservoir can be transferred to the aerosol generating article by means of a heat conductor, for example a metal tube.

[0101] The heat sink or heat reservoir can be arranged so that it is in direct contact with the aerosol generating article and can transfer the stored heat directly to the substrate. Alternatively, the heat stored in the heat sink or heat reservoir can be transferred to the aerosol generating article by means of a heat conductor, for example a metal tube.

[0102] The heating element can also heat the aerosol generating article by conduction. The heating element can be at least partially in contact with the substrate or a carrier on which the substrate is deposited. Heat from the heating element can be conducted to the substrate by a heat conductive element.

[0103] Preferably, the heating element 3 can include at least one inner heating element and / or at least one outer heating element. The inner heating element is in thermal contact with the inside of the aerosol generating article 2 when in operation. The outer heating element is in thermal contact with the outside of the aerosol generating article 2 when in operation. The heating method of the heating element 3 includes but is not limited to resistance heating, infrared heating, electromagnetic heating, light heating, etc.

[0104] When the heating element 3 includes an outer heating element, the outer heating element is preferably arranged inside and / or outside the clamping portion 105. The fixing portion 104 can be selected to have a smaller cross-sectional area, i.e. a smaller clamping portion 105 radius and a smaller non-clamping portion 106 area, to ensure better peripheral heating effect. Preferably, the fixing portion 104 satisfies S'≤S≤1.3·S'.

[0105] The terminology and phraseology used here is solely used for the purpose of description and the present application should not be limited to these terms and expressions. The use of these terms and expressions does not imply the exclusion of any equivalent features illustrated and described (or part thereof) and it should be recognized that various modifications can exist and should be included within the scope of the claims. Other modifications, variations and alternatives can also exist. Accordingly, the claims should be considered as covering all such equivalents.

[0106] Similarly, it needs to be pointed out that, although the utility model has been described with reference to the current specific embodiments, those skilled in the art should realize that the above embodiments are only used to illustrate the utility model, and various equivalent changes or replacements can be made without departing from the spirit of the utility model, therefore, as long as the changes, variations of the above embodiments are within the scope of the utility model, they will fall within the scope of the claims of the utility model.

Claims

1. An aerosol-generating article receiving cavity, characterized in that, The accommodation cavity is configured to receive an aerosol generating article from one end, the aerosol generating article located in the accommodation cavity has a central axis, The accommodation cavity includes an accommodation cavity top end for receiving insertion of the aerosol generating article, an accommodation cavity wall for surrounding the aerosol generating article, and an accommodation cavity bottom end for limiting the aerosol generating article, A portion of the accommodation cavity wall converges to form a fixing portion, the fixing portion includes at least one clamping portion for clamping at least a portion of the aerosol generating article and at least one non-clamping portion, the minimum radial distance between the clamping portion and the central axis is less than or equal to the minimum radial distance between the accommodation cavity top end and the central axis, and the fixing portion smoothly transitions to the accommodation cavity top end in the axial direction.

2. The aerosol-generating article containing cavity according to claim 1, wherein, The aerosol generating article clamped by the clamping portion cannot completely fill the cross-sectional area of the fixing portion, and there is a space between the non-clamping portion and the outer surface of the aerosol generating article as a passage for airflow.

3. The aerosol generating article containing cavity according to claim 1, wherein, The fixing portion is provided at the bottom end of the accommodation cavity wall, and the accommodation cavity bottom end has the same shape as the cross-sectional shape of the fixing portion.

4. The aerosol generating article containing cavity according to claim 1, wherein, The fixing portion is provided at a non-end portion of the accommodation cavity wall, and the fixing portion smoothly transitions to the accommodation cavity bottom end.

5. The aerosol generating article containing cavity according to claim 1, wherein, The projection area of the cross section of the fixing portion is within the projection area of the accommodation cavity top end.

6. The aerosol generating article containing cavity according to claim 1, wherein, The projection area of the cross section of the fixing portion partially exceeds the projection area of the accommodation cavity top end.

7. The aerosol generating article containing cavity according to claim 1, wherein, At least a portion of the projection area of the accommodation cavity bottom end exceeds the projection area of the accommodation cavity top end.

8. The aerosol generating article containing cavity according to claim 1, wherein, The shape of the accommodation cavity bottom end is the same as the cross section of the fixing portion.

9. The aerosol generating article containing cavity according to claim 1, wherein, The cross-sectional shape of the fixing portion is composed of at least one curved line and / or at least one straight line.

10. The aerosol-generating article receiving cavity of claim 9, wherein, The cross-sectional shape of the fixing portion is circular, elliptical, olive-shaped, racetrack-shaped, rounded quadrilateral, or sector-shaped.

11. The aerosol-generating article containing cavity according to claim 1, wherein, After the aerosol generating article is inserted into the accommodation cavity, the narrowest cross-sectional area of the aerosol generating article is S', the narrowest cross-sectional area of the fixing portion is S, and the fixing portion satisfies 1.05·S'≤S≤1.10·S', 1.10·S'≤S≤1.20·S', 1.20·S'≤S≤1.30·S', 1.30·S'≤S≤1.40·S', or 1.40·S'≤S≤1.50·S'.

12. The aerosol-generating article containing cavity according to claim 1, wherein, The diameter of the aerosol generating article in a natural state is d, and the diameter D of the accommodation cavity top end is set to d+0.2mm≤D≤d+2mm.

13. The aerosol-generating article containing cavity according to claim 1, wherein, The accommodation cavity wall includes n fixing portions, the fixing portions are arranged separately, and the fixing portions smoothly transition to each other, n≥2.

14. The aerosol-generating article receiving cavity of claim 13, wherein, an angle a exists between the axial projections of the fixing portions, 15. The aerosol-generating article receiving cavity of claim 2, wherein, The accommodation cavity bottom end is provided with a ventilation portion for guiding air flowing through the non-clamping portion to the bottom end of the aerosol generating article.

16. An aerosol-generating article receiving cavity according to any one of claims 1 to 15, wherein, The accommodation cavity includes a portion in the form of a Venturi tube.

17. An aerosol-generating device comprising: It comprises a heating accommodation cavity, a power supply, and a heating element, wherein, The heating accommodation cavity is the accommodation cavity of any one of claims 1-16, configured to receive an aerosol generating article during operation, The power supply is configured to provide electrical energy to the heating element during operation, and the heating element is in thermal contact with the aerosol generating article.

18. The aerosol-generating device of claim 17, wherein, The aerosol generating device further includes a sensor for detecting whether the aerosol generating article reaches an operating position in the accommodation cavity.

19. The aerosol-generating device of claim 17, wherein, The heating element is an external heating element, and the heating element is disposed at the clamping portion.

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