Aerosol-generating device

Abstract

The utility model discloses an aerosol generating device. The aerosol generating device comprises a heating cavity and a heating body, the heating cavity is used for containing an aerosol forming substrate, and the heating cavity is provided with an air inlet and an air outlet which are opposite to each other; the heating body is arranged in the heating cavity, the heating body is used for heating the aerosol forming substrate to generate aerosol, the heating body can move relative to the aerosol forming substrate, and the moving path of the heating body is the opposite path between the air inlet and the air outlet. According to the aerosol generating device provided by the embodiment of the invention, the heating body moves along the specific path relative to the aerosol forming substrate, and the aerosol forming substrate is heated in a partitioned manner, so that the heating conditions of the aerosol forming substrate at different positions are relatively balanced, and the consistency of generating aerosol by the aerosol forming substrate is improved.

Description

Technical Field

[0001] The present application relates to the field of atomization technology, and more specifically, to an aerosol generating device. Background Art

[0002] The aerosol generating device can be used to heat the aerosol-forming substrate to form an aerosol by heating the aerosol-forming substrate without burning it. In the related art, the aerosol generating device includes a heating element for providing a heat source and a heating chamber for accommodating the aerosol-forming substrate. However, the heating element heats the aerosol-forming substrate to different degrees, and the generated aerosol has poor consistency. Utility Model Content

[0003] The embodiments of the present application provide an aerosol generating device, and are at least used to improve the problem of poor aerosol consistency.

[0004] The aerosol generating device of the embodiment of the present application includes a heating cavity and a heating element, wherein the heating cavity is used to accommodate an aerosol-forming substrate, and the heating cavity is provided with a relative air inlet and an air outlet; the heating element is arranged in the heating cavity, and the heating element is used to heat the aerosol-forming substrate to generate an aerosol, and the heating element can move relative to the aerosol-forming substrate, and the movement path of the heating element is a relative path between the air inlet and the air outlet.

[0005] The aerosol generating device of the embodiment of the present application heats the aerosol-forming substrate in different zones by moving the heating element along a specific path relative to the aerosol-forming substrate, so that the heating conditions of the aerosol-forming substrate at different positions are relatively balanced, thereby improving the consistency of aerosol generation by the aerosol-forming substrate.

[0006] In some embodiments, the heating cavity includes a cavity wall, which surrounds the heating cavity to form a heating cavity, and the heating cavity is used to accommodate the aerosol-forming substrate. The heating element is arranged in the heating cavity, and the cavity wall is used to fit with the aerosol-forming substrate.

[0007] In this way, the cavity wall is fitted with the aerosol-forming matrix, which facilitates the placement and fixation of the aerosol-forming matrix and also saves installation space.

[0008] In some embodiments, the aerosol-forming substrate is in sheet form, and the heating element is located on one side of the aerosol-forming substrate.

[0009] In this way, the aerosol-forming substrate is in sheet form, which is convenient for attaching to the cavity wall, and the heating element is arranged on one side of the aerosol-forming substrate, which is not easy to interfere with the movement of the heating element relative to the aerosol-forming substrate. In addition, the sheet-shaped aerosol-forming substrate heats up faster when heated, which is conducive to saving heating power and improving atomization efficiency.

[0010] In some embodiments, the surface area of ​​the aerosol-forming substrate facing away from the chamber wall is in the range of 100 mm 2 -4000mm 2 The thickness of the aerosol-forming matrix along the direction perpendicular to the cavity wall ranges from 2 mm to 8 mm.

[0011] Thus, by setting the end surface area of ​​the aerosol-forming matrix in the direction perpendicular to the cavity wall to be larger, a wider mobile heating range is provided for the heating element. By setting the thickness of the aerosol-forming matrix to be thinner, the high temperature of the heating element can be quickly transferred in the direction perpendicular to the cavity wall, saving heating power and achieving a better heating atomization effect.

[0012] In some embodiments, the heating element is disposed close to a side of the aerosol-forming substrate facing away from the cavity wall.

[0013] In this way, by placing the heating element close to the side of the aerosol-forming matrix facing away from the cavity wall, heat loss in heat conduction is reduced and the heating effect is improved. At the same time, aerosol is generated on the side of the aerosol-forming matrix facing away from the cavity wall, which makes it easy to dissipate to the outlet.

[0014] In some embodiments, the distance between the heating element and the aerosol-forming substrate is in the range of 2 mm to 4 mm.

[0015] In this way, by setting the distance between the heating element and the aerosol-forming substrate within a reasonable range, the heating temperature of the aerosol-forming substrate is appropriate, the heating efficiency is high, and local overheating and burning are not easy to occur, and the heating element can be ensured to move smoothly on a path close to the aerosol-forming substrate.

[0016] In some embodiments, the heating element is cylindrical, and the end surface area of ​​the heating element is within the range of 3 mm 2 -9mm 2 Or, the heating element is in sheet form, and the surface area of ​​the heating element relative to the aerosol forming matrix is ​​60mm 2 -200mm 2 .

[0017] In this way, by setting the shape and surface area of ​​the heating element reasonably, the power of the heating element is within an appropriate range, thereby controlling the heating area and heating temperature of the aerosol-forming substrate to be appropriate.

[0018] In some embodiments, the unit distance of movement of the heating element ranges from 3 mm to 10 mm.

[0019] In this way, by setting the moving distance of the heating element within a reasonable range, the heating area and heating time of each heating zone are made the same, and the generated aerosol has better consistency.

[0020] In some embodiments, the aerosol generating device comprises a driving assembly connected to the heating element, and the driving assembly is used to drive the heating element to move relative to the aerosol-forming substrate.

[0021] In this way, the driving assembly drives the heating element to move, thereby controlling the heating element to move a preset distance along a predetermined direction.

[0022] In some embodiments, the heating element is a thermal resistor heating element.

[0023] Thus, by adopting the thermal resistance heating element, the temperature of the heating element is suitable and the heating is stable. In addition, the thermal resistance heating element can adopt standard industrial products, which is low in cost and has strong feasibility.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a schematic structural diagram of an aerosol generating device according to an embodiment of the present application;

[0027] Figure 2 is a schematic structural diagram of an aerosol generating device according to an embodiment of the present application from another perspective;

[0028] Figure 3 is a schematic diagram of the structure of the aerosol generating device according to an embodiment of the present application from a top view;

[0029] Figure 4 yes Figure 1 A schematic cross-sectional view of the aerosol generating device along the AA direction shown;

[0030] Figure 5 yes Figure 3 A schematic cross-sectional view of the aerosol generating device along the BB direction is shown;

[0031] Figure 6 yes Figure 4 An enlarged schematic diagram of part C of the aerosol generating device.

[0032] Description of main component symbols:

[0033] Aerosol generating device 100, heating cavity 10, heating chamber 101, air inlet 102, air outlet 103, cavity wall 11, first end 111, second end 112, aerosol forming matrix 20, heating area 21, heating element 30, thermal resistor heating element 31, and driving component 40. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "inner", "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0039] The aerosol generating device 100 is a structure that can generate aerosol by acting on the aerosol-forming matrix 20 through resistance heating, electromagnetic heating, microwave heating, laser irradiation, infrared light irradiation, ultrasound or mechanical vibration. The aerosol-forming matrix 20 is a plant leaf product that has been processed and heated to generate an aerosol. The form of the aerosol-forming matrix 20 can be fully solid or semi-solid. In the case where the aerosol-forming matrix 20 is fully solid, the aerosol-forming matrix 20 can be prepared by rolling, slurrying, die casting, extrusion and other process methods. The aerosol-forming matrix 20 can be a sheet structure, a strip structure, a tubular structure or a block structure. In the present application, the aerosol-forming matrix 20 is such as Figure 4 The sheet-like structure shown is used as an example for explanation.

[0040] The aerosol-forming substrate 20 is heated and atomized to form an aerosol, which may be visible or invisible and may include vapor (e.g., fine particulate matter in a gaseous state, which is usually liquid or solid at room temperature) and liquid droplets of gas and condensed vapor. The user can inhale the aerosol into the oral cavity, nasal cavity or lungs through the mouth or nose, and the aerosol inhaled into the user's respiratory system can be used for various purposes such as food, medicine, health care, entertainment, etc.

[0041] See also Figure 1-Figure 4 The aerosol generating device 100 of the embodiment of the present application includes a heating cavity 10 and a heating element 30, wherein the heating cavity 10 is provided with a relative air inlet 102 and an air outlet 103; the heating element 30 is arranged in the heating cavity 10, and the heating element 30 is used to heat the aerosol-forming matrix 20 to generate an aerosol, and the heating element 30 can move relative to the aerosol-forming matrix 20, and the moving path of the heating element 30 is the relative path between the air inlet 102 and the air outlet 103.

[0042] The aerosol generating device 100 of the embodiment of the present application moves the heating element 30 along a specific path relative to the aerosol-forming substrate 20, thereby performing zoned heating on the aerosol-forming substrate 20, so that the heating conditions of the aerosol-forming substrate 20 at different positions are relatively balanced, thereby improving the consistency of aerosol generation by the aerosol-forming substrate 20.

[0043] For ease of explanation, in the following description of this application, the direction in which the distance between the air inlet 102 and the air outlet 103 is the shortest, that is, the length direction of the heating chamber 10 is defined as the longitudinal direction of the heating chamber 10, and the direction from the air inlet 102 to the air outlet 103 is the direction from bottom to top. The transverse direction of the heating chamber 10 is a direction perpendicular to the longitudinal direction.

[0044] Specifically, the heating cavity 10 can provide support and protection for the heating element 30 and the aerosol-forming matrix 20, and the heating chamber 101 formed by the heating cavity 10 provides a place for heating and atomization for the heating element 30 and the aerosol-forming matrix 20. The heating cavity 10 can be in various shapes such as cylindrical, spherical, rugby, and rod-shaped. The cross-sectional shape of the outer contour of the heating cavity 10 includes but is not limited to circular, elliptical, rectangular, triangular, polygonal, runway-shaped, olive-shaped, and other irregular shapes with straight and curved edges. In this application, the heating cavity 10 is taken as Figure 1 The cylindrical structure shown in the figure has an outer cross-sectional shape of the heating chamber 10. Figure 3 The runway shape shown is used as an example for explanation.

[0045] The heating element 30 may be a thermal resistor, an inductor coil, an electrode, or other element that can generate heat when powered on. After the aerosol generating device 100 is started, the temperature of the heating element 30 increases when powered on, and the heat of the heating element 30 can be transferred to the aerosol-forming matrix 20 by heat transfer. The aerosol-forming matrix 20 heats up and atomizes to generate an aerosol, which diffuses inside the heating cavity 10. When the user inhales the aerosol, the air flow can enter the heating cavity 10 from the air inlet 102, and drive the aerosol to flow toward the air outlet 103 under the action of the suction force, and finally the air flow containing the aerosol flows out of the heating cavity 10 from the air outlet 103.

[0046] During the movement of the heating element 30, the distance between the heating element 30 and the aerosol-forming substrate 20 can be kept relatively uniform, so that the heating temperature of different areas of the aerosol-forming substrate 20 is consistent. Therefore, the movement path of the heating element 30 can be in line with the surface shape of the aerosol-forming substrate 20. The heating element 30 moves along the relative path between the air inlet 102 and the air outlet 103. The movement path can be a straight line, a curve, or a combination of a straight line and a curve. Figure 4 In the illustrated embodiment, the movement path of the heating element 30 is a straight line, and the heating element 30 moves up and down along the longitudinal direction of the heating chamber 10. As the heating element 30 moves up or down, different regions of the aerosol-forming substrate 20 in the longitudinal direction of the heating chamber 10 are heated in sequence.

[0047] See also Figure 2 and Figure 4In some embodiments, the heating cavity 10 includes a cavity wall 11, which surrounds a heating chamber 101, and the heating chamber 101 is used to accommodate an aerosol-forming substrate 20. The heating element 30 is disposed in the heating chamber 101, and the cavity wall 11 is used to fit the aerosol-forming substrate 20.

[0048] In this way, the cavity wall 11 is attached to the aerosol-forming substrate 20, which facilitates the placement and fixation of the aerosol-forming substrate 20 and also saves installation space.

[0049] Specifically, the cavity wall 11 surrounds the heating cavity 10 in the lateral direction to form the heating cavity 101, and the surface of the cavity wall 11 facing the heating cavity 101 may be a flat surface. The aerosol-forming substrate 20 may be attached to the cavity wall 11, and the aerosol-forming substrate 20 may be attached to the cavity wall 11 in the lateral direction of the heating cavity 10, such as Figure 4 The aerosol-forming substrate 20 may also be attached to the two opposite side walls 11 of the heating chamber 10 in the transverse direction, and the heating element 30 may be disposed between the aerosol-forming substrates 20 on both sides. In some extended embodiments, the aerosol-forming substrate 20 is attached to the cavity wall 11 and may surround the heating chamber 101 in the transverse direction of the heating chamber 10 for one circle, half a circle, three quarters of a circle, etc.

[0050] The cavity wall 11 may include a first end 111 and a second end 112 opposite to each other in the longitudinal direction of the heating cavity 10, the first end 111 is formed with an air inlet 102, and the second end 112 is formed with an air outlet 103. The cavity wall 11 may extend in the longitudinal direction of the heating cavity 10 between the first end 111 and the second end 112, or in other words, the cavity wall 11 is perpendicular to the plane where the air inlet 102 and / or the air outlet 103 are located, so as to reduce the flow resistance of the airflow.

[0051] When the user inhales the aerosol, air flow can enter the heating chamber 101 from the air inlet 102 and drive the aerosol to flow toward the air outlet 103 under the action of the suction force. Finally, the air flow containing the aerosol flows out of the heating chamber 101 from the air outlet 103.

[0052] See also Figure 4 In some embodiments, the aerosol-forming substrate 20 is in a sheet shape, and the heating element 30 is located on one side of the aerosol-forming substrate 20 .

[0053] In this way, the aerosol-forming substrate 20 is in sheet form, which is convenient for attaching to the cavity wall 11, and the heating element 30 is arranged on one side of the aerosol-forming substrate 20, which is not easy to interfere with the movement of the heating element 30 relative to the aerosol-forming substrate 20. In addition, the sheet-shaped aerosol-forming substrate 20 heats up faster, which is conducive to saving heating power and improving atomization efficiency.

[0054] Specifically, the aerosol-forming substrate 20 may be in the form of a sheet, attached to the cavity wall 11, and flat along the surface of the cavity wall 11. The planar shape of the aerosol-forming substrate 20 unfolded on the cavity wall 11, that is, the end face shape of the aerosol-forming substrate 20 in the direction perpendicular to the cavity wall 11, is not limited in the present application. The end face shape of the aerosol-forming substrate 20 in the direction perpendicular to the cavity wall 11 may be rectangular, circular, elliptical, fan-shaped, polygonal, racetrack-shaped, and other irregular shapes. The end face shape of the heating chamber 101 in the direction perpendicular to the cavity wall 11 includes, but is not limited to, rectangular, circular, elliptical, fan-shaped, polygonal, racetrack-shaped, and the like. The end face shape of the heating chamber 101 matches the end face shape of the aerosol-forming substrate 20 in the same direction.

[0055] The aerosol-forming substrate 20 is flat along the surface of the cavity wall 11, and the heating element 30 can translate relative to the aerosol-forming substrate 20 in a plane at a certain distance from the aerosol-forming substrate 20. In some extended embodiments, the heating element 30 can also rotate, swing, etc. while translating relative to the aerosol-forming substrate 20.

[0056] See also Figure 5 In some embodiments, the surface area of ​​the aerosol-forming substrate 20 facing away from the chamber wall 11 is in the range of 100 mm 2 -4000 mm 2 (Including endpoints).

[0057] In this way, by arranging the surface area of ​​the side of the aerosol-forming substrate 20 facing away from the cavity wall 11 to be larger, a wider moving heating range is provided for the heating element 30 .

[0058] Specifically, the aerosol-forming substrate 20 is in the form of a sheet and may extend from the first end 111 to near the second end 112. The surface area of ​​the aerosol-forming substrate 20 facing away from the cavity wall 11 may be in the range of 100 mm 2 -4000 mm 2 、121mm 2 -2000 mm 2 , 150mm 2 -1000 mm 2 、270mm 2 -800 mm 2 , 400mm 2 -600 mm 2 , 1000mm 2 -3000mm 2 , 2000mm 2 -2900 mm 2 、2400mm 2 -3500 mm 2 、3100mm2 -3750 mm 2 、3500mm 2 -3800 mm 2 , 2000mm 2 -4000 mm 2 For example, the surface area of ​​the aerosol-forming substrate 20 facing away from the chamber wall 11 may be 100 mm 2 、144mm 2 、180mm 2 、256mm 2 、380mm 2 、475mm 2 、521mm 2 、640mm 2 、720mm 2 、1600mm 2 , 2000mm 2 、3125mm 2 、3752mm 2 , 4000mm 2 The surface area of ​​the aerosol-forming substrate 20 facing the cavity wall 11 may be the same as or close to the surface area of ​​the aerosol-forming substrate 20 facing away from the cavity wall 11 .

[0059] See also Figure 4 and Figure 6 In some embodiments, the thickness H of the aerosol-forming substrate 20 along a direction perpendicular to the cavity wall 11 ranges from 2 mm to 8 mm (including the end points).

[0060] In this way, by setting the thickness of the aerosol-forming matrix 20 to be relatively thin, the high temperature of the heating element 30 can be quickly transferred in a direction perpendicular to the cavity wall 11, thereby saving heating power and achieving a better heating atomization effect.

[0061] Specifically, the thickness H of the aerosol-forming substrate 20 along the direction perpendicular to the cavity wall 11 may range from 2 mm to 8 mm, 2.3 mm to 7.9 mm, 2.65 mm to 7.5 mm, 3.1 mm to 7.0 mm, 3.5 mm to 6.5 mm, 3.7 mm to 6.2 mm, 4.25 mm to 5.8 mm, and 4.6 mm to 5.2 mm. Exemplarily, the thickness H of the heating element 30 along the direction perpendicular to the cavity wall 11 may range from 2 mm to 8 mm, 2.45 mm to 3.2 mm, 5.1 mm to 5.3 mm, 6.2 mm to 6.5 mm, 6.9 mm to 7.4 mm, 7.81 mm to 8 mm.

[0062] See also Figure 4 In some embodiments, the heating element 30 is disposed close to a side of the aerosol-forming substrate 20 that is away from the cavity wall 11 .

[0063] In this way, by placing the heating element 30 close to the side of the aerosol-forming matrix 20 that is away from the cavity wall 11 , heat loss in heat conduction is reduced, the heating effect is improved, and at the same time, aerosol is generated on the side of the aerosol-forming matrix 20 that is away from the cavity wall 11 and is easily dissipated toward the air outlet 103 .

[0064] Specifically, the aerosol-forming substrate 20 may be erected in the heating chamber 101 along the longitudinal direction of the heating chamber 10, and the side of the aerosol-forming substrate 20 facing the cavity wall 11 may be in contact with the cavity wall 11, and the side of the aerosol-forming substrate 20 facing away from the cavity wall 11 faces the heating element 30. The heating element 30 and the side surface of the aerosol-forming substrate 20 facing away from the cavity wall 11 may be spaced a small distance apart, so that the heating element 30 is close to the aerosol-forming substrate 20, but does not contact, abut or squeeze the aerosol-forming substrate 20, so as to ensure sufficient heating while avoiding the friction between the heating element 30 and the aerosol-forming substrate 20 that hinders the movement of the heating element 30.

[0065] Please refer again Figure 4 and Figure 6 In some embodiments, the distance D between the heating element 30 and the aerosol-forming substrate 20 ranges from 2 mm to 4 mm (including the endpoints).

[0066] In this way, by setting the distance between the heating element 30 and the aerosol-forming substrate 20 within a reasonable range, the heating temperature of the aerosol-forming substrate 20 is appropriate, local overheating and burning are not likely to occur, and the heating element 30 can be ensured to move smoothly on a path close to the aerosol-forming substrate 20.

[0067] Specifically, the heating element 30 is close to the side of the aerosol-forming matrix 20 that faces away from the cavity wall 11, and can be further limited to a distance D between the heating element 30 and the side surface of the aerosol-forming matrix 20 that faces away from the cavity wall 11 in a direction perpendicular to the cavity wall 11, ranging from 2 mm to 4 mm (including the end points).

[0068] For example, the distance D between the heating element 30 and the aerosol-forming substrate 20 may range from 2 mm to 4 mm, 2.2 mm to 3.7 mm, 2.5 mm to 3.4 mm, 2.85 mm to 3.15 mm, or 2.97 mm to 3.05 mm. For another example, the distance D between the heating element 30 and the aerosol-forming substrate 20 may range from 2 mm to 4 mm, 2.2 mm to 3.7 mm, 2.5 mm to 3.4 mm, 2.85 mm to 3.15 mm, or 2.97 mm to 3.05 mm.

[0069] As explained above, the distance between the heating element 30 and the aerosol-forming substrate 20 should be kept at a fixed value so that the heating temperature of different areas is consistent. During the movement of the heating element 30, the distance between the heating element 30 and the aerosol-forming substrate 20 may also vary within a small range due to factors such as mechanical vibration, acoustic and optical interference, and air flow fluctuations.

[0070] See also Figure 4 and Figure 5 In some embodiments, the heating element 30 is columnar, and the end surface area of ​​the heating element 30 is 3 mm 2 -9mm 2 (including the endpoints), or, the heating element 30 is in sheet form, and the surface area of ​​the heating element 30 relative to the aerosol-forming substrate 20 is 60 mm 2 -200mm 2 (Including endpoints).

[0071] In this way, by reasonably setting the shape and area of ​​the heating element 30, the power of the heating element 30 is within a suitable range, thereby controlling the heating area and heating temperature of the aerosol-forming substrate 20 to be appropriate.

[0072] Specifically, the heating element 30 can move up and down along the length direction of the aerosol-forming substrate 20, that is, along the longitudinal direction of the heating chamber 10. Figure 5 As shown, during the movement of the heating element 30, the area where the aerosol-forming substrate 20 and the heating element 30 are in real time opposite to each other forms a heating area 21. The length of the heating element 30 in the width direction of the aerosol-forming substrate 20 is substantially equal to the width of the aerosol-forming substrate 20, so that the heating area 21 covers the wide side of the aerosol-forming substrate 20, thereby preventing the edge temperature of the aerosol-forming substrate 20 in the width direction from being insufficient and difficult to atomize.

[0073] In some embodiments, the heating element 30 is columnar, and the end surface shape of the heating element 30 is not limited. The columnar heating element 30 can be arranged above the surface of the sheet-shaped aerosol-forming substrate 20 along the lateral direction of the heating chamber 10. Further, the heating element 30 can be arranged parallel to the width direction of the aerosol-forming substrate 20. Exemplarily, the end surface shape of the heating element 30 can be as follows: Figure 4 The heating element 30 is cylindrical, and the end surface area of ​​the heating element 30 can be 3mm 2 , 3.4mm 2 , 4.75mm 2 、5.18mm 2 、6.3mm 2 , 7.2mm 2 , 8.5mm 2 , 9mm 2 .

[0074] In other embodiments, the heating element 30 is in the form of a sheet, and the sheet-shaped heating element 30 may be flat along the length direction and / or width direction of the aerosol-forming substrate 20, so that the heated area of ​​the aerosol-forming substrate 20 is as close as possible to the heating area of ​​the heating element 30. The shapes of the surfaces of the heating element 30 and the aerosol-forming substrate 20 relative to each other may include, but are not limited to, square, rectangular, polygonal, elliptical, racetrack, olive, and other irregular shapes. For example, the surface area of ​​the heating element 30 relative to the aerosol-forming substrate 20 may be 60 mm 2 、62mm 2 、77mm 2 、96mm 2 、121mm 2 、153mm 2 、168mm 2 、186mm 2 、195mm 2 , 200mm 2 .

[0075] See also Figure 5 In some embodiments, the unit distance L of the heating element 30 is in the range of 3 mm to 10 mm.

[0076] In this way, by setting the moving distance of the heating element 30 within a reasonable range, the heating area and heating time of each heating region 21 are made the same, and the generated aerosol has better consistency.

[0077] Specifically, the heating element 30 can move upward or downward along the longitudinal direction of the heating cavity 10. In a specific embodiment, the moving path of the heating element 30 is a straight path about 203 mm away from the aerosol-forming matrix and parallel to the heating element 30. Usually, there is a certain time interval between each puff of aerosol by the user, which is the puff interval. The heating element 30 can move during the puff interval, and the mouthfeel of the aerosol produced is not easily affected by the puff airflow. The heating element 30 can move multiple times during the puff interval, and the distance of each movement is the unit distance L of the movement of the heating element 30. After each movement of the heating element 30, it can be fixed relative to the aerosol-forming matrix 20 and heat a heating area 21. During the puff interval, the number of movements of the heating element 30 is the same as the number of heating areas 21, and each movement of the heating element 30 can form a heating area 21. Figure 5 The middle dotted line frame represents the heating element 30 and the heating area 21 after one movement.

[0078] The heating time of the heating element 30 for the aerosol-forming substrate 20 after each movement can be a fixed value. By setting the heating time after each movement to be constant, the heating time of each heating area 21 is the same, so that the heating degree of different heating areas 21 is basically the same. Based on the heat release characteristics of the aerosol-forming substrate 20 and the temperature of the heating element 30, the heating time of the heating element 30 for each heating area 21 can range from 1 / 4 to 4 / 3 of the puff interval, ensuring sufficient atomization of the heating area 21 while avoiding burning caused by too long heating time.

[0079] In some embodiments, the surface of the aerosol-forming substrate 20 facing away from the cavity wall 11 is rectangular, the heating cavity 10 is cylindrical and the longitudinal section of the heating chamber 101 is rectangular, and the aerosol-forming substrate 20 is attached to the cavity wall 11 on one side of the heating cavity 10 in the transverse direction. The length of the aerosol-forming substrate 20 along the longitudinal direction of the heating cavity 10 is 6mm-20mm, the width along the transverse direction of the heating cavity 10 is 6mm-20mm, and the thickness along the direction perpendicular to the cavity wall 11 is 2mm-6mm. The heating element 30 is cylindrical, and is 3mm away from the aerosol-forming substrate 20 in the direction perpendicular to the cavity wall 11. The heating element 30 moves up and down relative to the aerosol-forming substrate 20, and the distance L of each upward or downward movement can be 3mm, 4.15mm, 5.2mm, 6.33mm, 7.6mm, 8.5mm, 9.9mm, 10mm. The number of times the heating element 30 moves during the puffing interval may be 1 to 3 times, and accordingly, 1, 2 or 3 heating areas 21 may be formed during one puffing interval. During the puffing interval, the heating element 30 heats the aerosol-forming matrix 20 to generate aerosol, and the aerosol is inhaled from the air outlet 103 under the action of the suction force. Since the heating area and heating time of each heating area 21 are consistent, the mouthfeel of the generated aerosol is relatively consistent.

[0080] See also Figure 4 In some embodiments, the aerosol generating device 100 includes a driving component 40 connected to the heating element 30 , and the driving component 40 is used to drive the heating element 30 to move relative to the aerosol-forming substrate 20 .

[0081] In this way, the driving assembly 40 drives the heating element 30 to move, thereby controlling the heating element 30 to move a preset distance along a predetermined direction.

[0082] Specifically, the driving assembly 40 may be disposed outside the heating chamber 101, and the driving assembly 40 may include a power source and a transmission mechanism, wherein the power source is used to provide driving force, and the transmission mechanism is connected to the heating element 30, and the transmission mechanism may control the path and direction of movement of the heating element 30. For example, the transmission mechanism may be a slide rail structure, a connecting rod mechanism, a rope mechanism, etc. The transmission mechanism may partially extend into the heating chamber 101 and be connected to the heating element 30.

[0083] In some embodiments, the heating element 30 is a thermal resistor heating element 31 .

[0084] Thus, by using the thermal resistor heating element 31, the temperature of the heating element 30 is suitable and the heating is stable. In addition, the thermal resistor heating element 31 can be a standard industrial product, which is low in cost and has strong feasibility.

[0085] Specifically, the thermal resistor heating element 31 is a type of heating element 30 that converts electrical energy into heat energy by overcoming resistance when current passes through it. Therefore, the thermal resistor heating element 31 can generate heat to heat the aerosol-forming matrix 20 when it is powered on. The thermal resistor heating element 31 can be a heating tube, a heating rod, a heating wire, a heating net, and the like.

[0086] In the aerosol generating device 100 of the embodiment of the present application, the heating element 30 moves along a preset path relative to the aerosol-forming substrate 20, so that the heating area and heating time of the heating regions 21 at different positions of the aerosol-forming substrate 20 are constant, thereby ensuring that the aerosols generated in different heating regions 21 have better consistency.

[0087] In the description of this specification, the description with reference to the terms "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0088] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An aerosol generating device, characterized in that: The aerosol generating device comprises: a heating chamber for accommodating the aerosol-forming substrate, the heating chamber being provided with an air inlet and an air outlet opposite to each other; and A heating element, wherein the heating element is arranged in the heating cavity, and the heating element is used to heat the aerosol-forming substrate to generate an aerosol. The heating element can move relative to the aerosol-forming substrate, and the moving path of the heating element is a relative path between the air inlet and the air outlet.

2. The aerosol generating device according to claim 1, characterized in that: The heating cavity comprises a cavity wall, which surrounds and forms a heating chamber, and the heating chamber is used to accommodate an aerosol-forming substrate. The heating element is arranged in the heating chamber, and the cavity wall is used to fit with the aerosol-forming substrate.

3. The aerosol generating device according to claim 2, characterized in that: The aerosol-forming substrate is in sheet shape, and the heating element is located on one side of the aerosol-forming substrate.

4. The aerosol generating device according to claim 2, characterized in that: The surface area of ​​the aerosol-forming substrate facing away from the cavity wall is 100 mm 2 -4000 mm 2 The thickness of the aerosol-forming matrix along the direction perpendicular to the cavity wall ranges from 2 mm to 8 mm.

5. The aerosol generating device according to claim 2, characterized in that: The heating element is arranged close to a side of the aerosol-forming substrate facing away from the cavity wall.

6. The aerosol generating device according to claim 5, characterized in that: The distance between the heating element and the aerosol-forming substrate is in the range of 2 mm to 4 mm.

7. The aerosol generating device according to claim 5, characterized in that: The heating element is columnar, and the end surface area of ​​the heating element is 3mm 2 -9mm 2 , or, the heating element is in sheet form, and the surface area of ​​the heating element relative to the aerosol forming substrate is 60 mm 2 -200mm 2 .

8. The aerosol generating device according to claim 1, characterized in that: The unit distance range of the heating element movement is 3mm-10mm.

9. The aerosol generating device according to claim 1, characterized in that: The aerosol generating device comprises a driving assembly connected to the heating element, and the driving assembly is used to drive the heating element to move relative to the aerosol-forming substrate.

10. The aerosol generating device according to any one of claims 1 to 9, characterized in that: The heating element is a thermal resistor heating element.

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