Aerosol forming device that is heated and does not burn, and heating member thereof

Abstract

The present invention provides a heating member (100) and an aerosol-forming device that is heated but not burned. The heating member (100) includes a base (10) having a storage portion (A) for storing an aerosol-generating substrate, and an electrically heated membrane layer (20) provided on the base (10) and including at least two heating regions (21), the base (10) further has a first end (a1) and a second end (a2) which are opposite ends thereof, the at least two heating regions (21) being sequentially arranged from the first end (a1) to the second end (a2), the heating region (21) located at the first end (a1) has a maximum heat generating power per unit area, and therefore the temperature of the radiation region located at the first end (a1) is maximum, and therefore the infrared radiation power is also maximum, and further the temperature of the aerosol-generating substrate located at the first end (a1) is highest, which is advantageous for increasing the aerosol generation rate and improving the texture in the initial heating stage.

Description

[Technical field]

[0001] The present application relates to the technical field of atomization, and more particularly to an aerosol forming device and its heating member that is heated and does not burn. [Background technology]

[0002] Current aerosol-generating devices generally use a heating element to heat an aerosol-generating substrate, and the aerosol-generating substrate includes a substrate material that can generate an aerosol when heated. The term "heated but not burned" refers to a type of heating method of an aerosol-generating device, which uses a scorching method that does not burn when heated to make the aerosol-generating substrate generate an aerosol.

[0003] However, in the prior art, the aerosol forming device that is heated and not burned has a defect of slow aerosol formation speed, which leads to a poor user experience. For example, in the early stage of the entire heating process, the user wants the aerosol to be generated quickly, but the current aerosol forming device has the problem of slow heating. Summary of the Invention

[0004] In view of this, the present application discloses an aerosol forming device and its heating member that are heated and do not burn.

[0005] A heating element, a base having a receiving area for receiving an aerosol-generating substrate; an electrically heated membrane layer disposed on the substrate and including at least two heating regions; The base further has a first end and a second end which are opposite ends thereof, the at least two heating regions are arranged sequentially from the first end to the second end, and among the heating regions, a heat generation power per unit area of ​​the heating region located at the first end is greater than a heat generation power per unit area of ​​the other heating regions.

[0006] In any embodiment, the heating power per unit area of ​​each of the heating regions from the second end to the first end increases gradually.

[0007] In any embodiment, the at least two heating zones are connected in series with each other, and the resistance per unit area of ​​each heating zone from the second end to the first end increases gradually.

[0008] In any embodiment, the at least two heating zones are connected in parallel with each other, and the resistance per unit area of ​​each heating zone from the second end to the first end decreases gradually.

[0009] In any embodiment, the heating member further includes an infrared-emitting film layer, the infrared-emitting film layer being provided on the substrate and including at least two emitting regions heated in one-to-one correspondence by the at least two heating regions.

[0010] In any of the embodiments, the substrate is cylindrical with a hollow cavity, the hollow cavity being used as the storage location, the infrared radiation film layer is provided on the inner wall of the substrate, the electric heating film layer is provided on the outer wall of the substrate, and each of the heating areas and the corresponding radiation areas are thermally conducted by the substrate therebetween.

[0011] In either embodiment, an insulating layer is provided between the outer wall of the substrate and the electrically heated membrane layer.

[0012] In any of the embodiments, the substrate is cylindrical with a hollow cavity, the hollow cavity being used as the storage location, the infrared-emitting film layer is provided on the outer wall of the substrate and transmits infrared radiation heating through the substrate to the aerosol-generating substrate in the storage location, the electrically heated film layer is provided on the surface of the infrared-emitting film layer facing away from the substrate, and each of the heating regions covers the corresponding radiation region.

[0013] In either embodiment, the circumferential outer side of the base forms the storage area, the electric heating film layer is provided on the circumferential outer wall surface of the base, the infrared radiation film layer is provided on the side of the electric heating film layer away from the base, and each of the heating regions covers its corresponding radiation region.

[0014] In either embodiment, an insulating layer is provided between the electrically heated membrane layer and the substrate.

[0015] In any of the embodiments, the base has a first side and a second side separated from the first side, the first side and the second side of the base form the storage location, the electric heating film layer and the infrared radiation film layer are laminated in sequence from inside to outside on a surface of one of the first side and the second side, and the infrared radiation film layer is provided on the other of the first side and the second side; or the electric heating film layer and the infrared radiation film layer are laminated in sequence from inside to outside on a surface of both the first side and the second side. An aerosol-forming device that does not burn when heated, comprising the heating member according to any one of the above embodiments.

[0016] In order to more clearly describe the technical means in the embodiments of the present application or the prior art, the following will briefly introduce drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can also obtain other drawings based on the disclosed drawings without requiring creative efforts. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a schematic diagram showing a cross-sectional configuration of a heating member according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing the configuration of a base body and an electric heating film layer of the heating member shown in FIG. [Diagram 3] FIG. 3 is a development view of the electric heating film layer shown in FIG. 2. [Figure 4]FIG. 11 is a schematic diagram showing a cross-sectional configuration of a heating member according to another embodiment of the present invention. [Diagram 5] FIG. 11 is a schematic diagram showing a cross-sectional configuration of a heating member according to another embodiment of the present invention. [Figure 6] FIG. 11 is a schematic diagram of a vertical cross section of a heating member according to another embodiment. [Figure 7] 7 is a schematic diagram of a horizontal cross section of the heating member shown in FIG. 6. [Figure 8] FIG. 11 is a schematic diagram of a vertical cross section of a heating member according to another embodiment. [Figure 9] 9 is a schematic diagram showing a cross-sectional configuration of the heating member shown in FIG. 8. [Figure 10] FIG. 13 is a schematic diagram showing the configuration of a heating body and an electric heating film layer in another embodiment. [Figure 11] FIG. 11 is a schematic diagram of a vertical cross section of a heating member according to another embodiment. [Figure 12] FIG. 11 is a schematic diagram of a vertical cross section of a heating member according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] In order to make the above objects, features and advantages of the present application more clear, the following detailed description will be given of specific embodiments of the present application in conjunction with the drawings. In order to fully understand the present application, various specific details will be described in the following description. However, the present application can be implemented in various forms other than those described herein, and those skilled in the art can make similar improvements without violating the content of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0019] In the description of the present application, it should be understood that the orientations or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the drawings, and are intended only to facilitate and simplify the description of the present application, and are not intended to indicate or imply that such devices or elements necessarily have a specific orientation or must be constructed and operated in a specific orientation, and should not be construed as limitations on the present application.

[0020] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or suggesting relative importance or implying the number of technical features depicted. Thus, a feature qualified as "first" or "second" can include at least one of the feature, either explicitly or implicitly. In the description of this application, unless otherwise clearly and specifically limited, "plurality" means at least two, e.g., two, three, etc.

[0021] In this application, unless otherwise clearly specified or limited, the terms "attached," "coupled," "connected," "fixed," etc. should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate, an internal communication between two elements, or an interactive relationship between two elements. Unless otherwise clearly limited, a person skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature means that the first feature and the second feature may be in direct contact with each other, or that the first feature and the second feature may be in indirect contact with each other via an intermediary. And a first feature being "above," "above," and "on" a second feature means that the first feature may be directly above or diagonally above the second feature, or simply that the horizontal height of the first feature is higher than that of the second feature. And a first feature being "below," "below," and "below" a second feature means that the first feature may be directly below or diagonally below the second feature, or simply that the horizontal height of the first feature is lower than that of the second feature.

[0023] It should be noted that when an element is said to be "fixed" or "mounted" to another element, the element may be directly on the other element or there may be intervening elements. When an element is considered to be "connected" to another element, the element may be directly connected to the other element or there may be intervening elements. As used herein, "vertical," "horizontal," "up," "down," "left," "right," and similar terms are for illustrative purposes only and do not represent the only embodiments.

[0024] As shown in Figures 1, 2 and 3, an embodiment of the present invention provides an aerosol-forming device that does not burn when heated, which includes a heating member 100 and uses the heating member 100 to heat an aerosol-generating substrate (not shown), so that the aerosol-generating substrate is heated and roasted, and corresponding components are volatilized to form an aerosol. When a user inhales the aerosol-generating device that does not burn when heated or the aerosol-generating substrate, an inhalation airflow is generated, and the generated aerosol follows the inhalation airflow and enters the user's oral cavity, i.e., is inhaled by the user.

[0025] The heating member 100 includes a base 10, an electric heating film layer 20, and an infrared emitting film layer 30. The base 10 has a storage area A for storing an aerosol-generating substrate and for passing an airflow. The electric heating film layer 20 is provided on the base 10 and includes at least two heating regions 21. The infrared emitting film layer 30 is provided on the base 10 and includes at least two emitting regions that are heated in one-to-one correspondence by the at least two heating regions 21. That is, the number of the heating regions 21 is equal to the number of the emitting regions and corresponds to each other in one-to-one correspondence, and each heating region 21 heats a corresponding one of the emitting regions, and after heating, the emitting region performs infrared radiation in the storage area A, thereby performing radiative heating on the aerosol-generating substrate in the portion of the storage area A that corresponds to the emitting region.

[0026] The substrate 10 further has a first end a1 and a second end a2, which are opposite ends of the substrate 10. The at least two heating regions 21 are arranged sequentially from the first end a1 to the second end a2, and the heating power per unit area of ​​the heating region located at the first end a1 of each heating region 21 is greater than the heating power per unit area of ​​the other heating regions 21. When the electric heating film layer 20 is energized, the temperature of the radiation region located at the first end a1 becomes the highest, the infrared radiation power located at the first end a1 becomes the highest, and the temperature of the portion located at the first end a1 of the aerosol-generating substrate becomes the highest, which is advantageous for improving the aerosol generation rate while ensuring sufficient roasting and no burnt taste, and improving the aerosol formation rate, improving the texture in the early stage of heating (for example, during the first and second inhalations), and improving the user experience. As can be understood, if the areas of the heating regions 21 are equal, the heating power of the heating region 21 located at the first end a1 among the heating regions 21 will be greater than the heating power of the other heating regions 21.

[0027] The first end a1 and the second end a2 in this specification will be described as follows. When the aerosol-forming substrate is combined with the heat-generating member (when the aerosol-forming substrate is combined with the accommodation portion A of the base 10), the end of the base 10 that first comes into contact with the aerosol-forming substrate is the first end a1, and the end that moves away from the first end a1 is the second end a2. As can be understood, with regard to the flow direction B of the suction airflow generated when the user inhales, the suction airflow flows from the second end a2 to the first end a1. In other words, the flow direction B of the suction airflow is from the second end a2 to the first end a1.

[0028] In use, the above-mentioned heated and non-burning aerosol-forming device and its heating member 100 are configured such that, when the user inhales, the electric heating film layer 20 is energized, causing each heating region 21 to heat the corresponding radiation region, and each radiation region is excited to perform infrared radiation heating on the aerosol-generating substrate in the storage location A, causing the aerosol-generating substrate to be heated and roasted to generate an aerosol. The generated aerosol flows from the second end a2 to the first end a1 along with the suction airflow, and is finally inhaled by the user. Among the heating regions 21, the heating region 21 located at the first end a1 has the largest heat generation power per unit area, and therefore the temperature of the radiation region located at the first end a1 is the largest and the infrared radiation power is also the largest; furthermore, the temperature of the part located at the first end a1 of the aerosol-generating substrate is the highest (i.e., the point with the highest temperature is at the part located at the first end a1 of the aerosol-generating substrate, i.e., the point with the highest temperature is closer to the user), which is advantageous for improving the aerosol generation rate while ensuring sufficient searing and no burnt taste, and the texture at the initial stage of heating (e.g., during the first and second inhalations) is improved, further improving the user experience.

[0029] In addition, the definition of each radiation area of ​​the infrared radiation film layer 30 is determined by each heating area 21, that is, the area that is roughly covered by the orthogonal projection of each heating area 21 on the infrared radiation film layer 30 is the radiation area corresponding to the heating area 21. Of course, the orthogonal projection of the heating area 21 on the infrared radiation film layer 30 and the corresponding radiation area are not limited to being completely covered, and the relationship between the areas of the two may be larger or smaller than the other, as long as the heat of the heating area 21 is transmitted to the corresponding radiation area and infrared radiation is generated, and is not limited here.

[0030] In order to ensure that each heating region 21 heats a corresponding radiation region, in one embodiment, the radiation region directly covers the corresponding heating region 21, and the heat generated by the heating region 21 after the heating region 21 is energized is directly conducted to the corresponding radiation region. Of course, in another embodiment, the radiation region does not directly cover the corresponding heating region 21, and the base 10 is sandwiched between the two, and the heat generated by the heating region 21 after the heating region 21 is energized is indirectly conducted to the corresponding radiation region through the base 10. Therefore, since each heating region 21 is sequentially arranged from the second end a2 to the first end a1 (i.e., sequentially arranged along the flow direction B of the suction airflow), each radiation region is also sequentially arranged from the second end a2 to the first end a1 (i.e., sequentially arranged along the flow direction B of the suction airflow). Furthermore, since the heating power per unit area of ​​the heating area 21 located at the first end a1 is the largest, after the electric heating film layer 20 is energized, the temperature of the radiation area located at the first end a1 is the highest, the radiation efficiency is the largest, and the temperature of the part of the aerosol generating substrate located at the first end a1 is the highest.

[0031] The infrared-emitting film layer 30 is not essential, and in some other embodiments, the base 10 is not provided with the infrared-emitting film layer 30. In this case, the heat generated by energizing the electric heating film layer 20 directly heats the aerosol-generating substrate in the accommodation location A. In this way, the heating power per unit area of ​​the heating region 21 located at the first end a1 among the heating regions 21 is the largest, so that the temperature of the portion located at the first end a1 of the aerosol-generating substrate is the highest (i.e., the place with the highest temperature is located at the end of the aerosol-generating substrate closer to the user), which is advantageous for improving the aerosol generation rate while ensuring sufficient roasting and no burnt taste, improving the texture in the initial heating stage, and further improving the user experience.

[0032] Alternatively, the material of the substrate 10 may be a high temperature resistant material such as quartz glass, mica, steel or ceramics.

[0033] Alternatively, the material of the infrared emitting film layer 30 may be at least one of high infrared emissivity materials such as perovskite, spinel, carbide, silicide, nitride, oxide and rare earth materials.

[0034] Specifically, in the embodiment, the heat generation power per unit area of ​​each heating region 21 from the second end a2 to the first end a1 gradually increases. In this way, when the electric heating film layer 20 is energized, the temperature of the heating region 21 located at the first end a1 is the highest, so that the temperature of the radiation region located at the first end a1 is the highest, the infrared radiation power is also the highest, and the temperature of the part of the aerosol-generating substrate located at the first end a1 is the highest, which is advantageous for increasing the aerosol generation speed and improving the texture in the initial heating stage.

[0035] Furthermore, the at least two heating regions 21 are connected in series with each other, and the resistance value of each heating region 21 per unit area from the second end a2 to the first end a1 is gradually increased. In this way, since each heating region 21 is connected in series with each other, the heat generation power and the resistance value of each heating region 21 per unit area are directly proportional to each other, so that the resistance value of each heating region 21 per unit area from the second end a2 to the first end a1 is gradually increased, thereby ensuring that the heat generation power of each heating region 21 per unit area from the second end a2 to the first end a1 is gradually increased. As can be understood, if the areas of each heating region 21 are equal, the resistance value of each heating region 21 per unit area from the second end a2 to the first end a1 is gradually increased.

[0036] In another embodiment, the at least two heating regions 21 may be connected in parallel with each other, and the resistance value of each heating region 21 per unit area from the second end a2 to the first end a1 may be gradually decreased. In this way, since each heating region 21 is connected in parallel with each other, the heat generation power and the resistance value of each heating region 21 per unit area are inversely proportional, so that the resistance value of each heating region 21 per unit area from the second end a2 to the first end a1 is gradually decreased, thereby ensuring that the heat generation power of each heating region 21 per unit area from the second end a2 to the first end a1 is gradually increased. As can be understood, if the areas of each heating region 21 are equal, the resistance value of each heating region 21 per unit area from the second end a2 to the first end a1 is gradually decreased.

[0037] Alternatively, the thickness of the membrane layer, the type of material or the preparation ratio of material components of different heating regions 21 can be controlled to achieve the purpose of controlling the resistance value per unit area of ​​each heating region 21, so that the resistance value per unit area of ​​each heating region 21 from the second end a2 to the first end a1 gradually increases or decreases. Alternatively, the material of the heating membrane layer can be a coating material such as silver-palladium alloy, a mixture of silver and glass, or a nano-resistance heating membrane material, as long as it can generate heat after electricity is applied, and is not limited here.

[0038] Specifically, in an embodiment, the heating element 100 further includes an electrode layer 50, which is disposed on the substrate 10 and electrically connected to the electric heating film layer 20, thereby realizing a series or parallel connection of each heating region 21. Of course, in other embodiments, the electrode layer 50 may be disposed directly on the electric heating film layer 20, and may be any material that can realize a series or parallel connection of each heating region 21, and is not limited thereto. Optionally, the material of the electrode layer 50 may be a metal material with high electrical conductivity, such as silver, gold, copper, and an alloy containing gold, silver, and copper.

[0039] Specifically, in the embodiment shown in Figures 2 and 3, the electric heating film layer 20 includes two heating regions 21, and for convenience of explanation, the heating region 21 located at the top is referred to as the first heating region, and the heating region 21 located at the bottom is referred to as the second heating region, and the suction airflow flows from bottom to top, that is, the first heating region is located at the first end a1, and the second heating region is located at the second end a2. In addition, the first heating region and the second heating region are connected in series with each other, and the resistance value of the unit area of ​​the first heating region is greater than the resistance value of the unit area of ​​the second heating region. As a result, after the current is applied, the heating temperature of the corresponding radiation region by the first heating region is higher, and the temperature of the radiative heating of the aerosol-generating substrate by the radiation region corresponding to the first heating region is higher. Furthermore, the electrode layer 50 is provided at one end of the first heating region away from the second heating region (i.e., the first end a1 of the base 10) and one end of the second heating region away from the first heating region (i.e., the second end a2 of the base 10), and the first heating region and the second heating region are in electrical contact with each other, thereby realizing a series connection between the first heating region and the second heating region.

[0040] As shown in FIG. 1, in one embodiment of the present invention, the base 10 is cylindrical with a hollow cavity, and the hollow cavity is used as the above-mentioned storage location A. The infrared emitting film layer 30 is provided on the inner wall of the base 10, and the electric heating film layer 20 is provided on the outer wall of the base 10. Each heating area 21 and its corresponding radiation area are heat-conducted by the base 10 between them, and the corresponding radiation area is heated, and the corresponding radiation area is excited to perform infrared radiation heating on the aerosol-generating substrate. In this way, when used, the aerosol-generating substrate is inserted into the hollow cavity of the base 10 (i.e., storage location A), and when the user inhales, the electric heating film layer 20 is energized, and each heating area 21 transfers heat to the corresponding radiation area by the base 10, thereby exciting each radiation area to perform infrared radiation heating on the aerosol-generating substrate, and the aerosol-generating substrate is heated and roasted to generate an aerosol. The generated aerosol flows from the second end a2 of the base body 10 to the first end a1 of the base body 10 along with the suction airflow, and is finally inhaled by the user.

[0041] Furthermore, an insulating layer 40 is provided between the outer wall of the substrate 10 and the electric heating film layer 20, and the insulating layer 40 insulates the electric heating film layer 20 from the substrate 10. Optionally, a high-temperature resistant insulating material is applied to the outer wall of the substrate 10, and the insulating layer 40 is formed after curing. An electric heating film material is applied to the insulating layer 40, and the electric heating film layer 20 is formed after curing. A conductive material is applied to the electric heating film layer 20 or the insulating layer 40, and the electrode layer 50 is formed after curing. An infrared emitting film material is applied to the inner wall of the substrate 10, and the infrared emitting film layer 30 is formed after curing.

[0042] Alternatively, the substrate 10 may be a hollow cylinder, and the hollow cavity body formed may also be cylindrical. In another embodiment, the substrate 10 may be a hollow prism, and the hollow cavity body formed may also be a prism. Of course, the substrate 10 may be other hollow shapes, and is not limited here.

[0043] In this embodiment, the infrared radiation film layer 30 is provided on the inner wall of the substrate 10, that is, the infrared radiation film layer 30 and the aerosol generating substrate in the hollow cavity are not blocked by the substrate 10. Therefore, the substrate 10 only needs to transmit the heat generated by the electric heating film layer 20 to the infrared radiation film layer 30, so the substrate 10 needs to adopt a material that is resistant to high temperatures and has good heat conduction effect, such as steel or ceramics, and is not limited here. In addition, the orthogonal projection of each infrared radiation film layer 30 on the electric heating film layer 20 and the electric heating film layer 20 are not limited to being completely covered, and the relationship between the areas of the two may be larger or smaller than the other, as long as the heat generated by the electric heating film layer 20 can be transmitted to the infrared radiation film layer 30 to generate infrared radiation, and is not limited here.

[0044] As shown in FIG. 4, in another embodiment of the present invention, the base 10 is cylindrical with a hollow cavity, and the hollow cavity is used as the above-mentioned storage location A. The infrared emitting film layer 30 is provided on the outer wall of the base 10, and transmits infrared radiation heating to the aerosol-generating substrate in the storage location A through the base 10. The electric heating film layer 20 is provided on the surface of the infrared emitting film layer 30 on the side away from the base 10, and each heating area 21 covers the corresponding radiation area. In this way, when in use, the aerosol-generating substrate is inserted into the hollow cavity of the base 10 (i.e., the storage location A), and the user inhales while the electric heating film layer 20 is energized, so that each heating area 21 directly transfers heat to the corresponding radiation area, thereby exciting each radiation area and transmitting infrared radiation heating to the aerosol-generating substrate through the base 10, and the aerosol-generating substrate is heated by the heat and generates an aerosol. The generated aerosol flows from the second end a2 of the base body 10 to the first end a1 of the base body 10 along with the suction airflow, and is finally inhaled by the user.

[0045] In this embodiment, the electric heating film layer 20 directly covers the infrared radiation film layer 30, so that the heat generated after the electric heating film layer 20 is energized is directly transmitted to the infrared radiation film layer 30, thereby realizing heating of the infrared radiation film layer 30. Since the infrared radiation film layer 30 and the aerosol-generating substrate in the hollow cavity are blocked by the base 10, the infrared radiation emitted by the infrared radiation film layer 30 cannot radiate heat the aerosol-generating substrate unless it passes through the base 10. Alternatively, the material of the base 10 may be a transparent material such as quartz glass or mica, which makes it easy for the infrared radiation emitted by the infrared radiation film layer 30 to pass through the transparent base 10, and further realizes radiative heating of the aerosol-generating substrate in the hollow cavity.

[0046] As shown in FIG. 5, when the infrared radiation film layer 30 is a conductive material, an insulating layer 40 is further provided between the infrared radiation film layer 30 and the electric heating film layer 20, and the insulating layer 40 is used to insulate the infrared radiation film layer 30 and the electric heating film layer 20. Optionally, an infrared radiation film material is applied to the outer wall of the substrate 10 and fixed, and then the infrared radiation film layer 30 is formed. A high-temperature resistant insulating material is applied to the infrared radiation film layer 30 and cured, and then the insulating layer 40 is formed. An electric heating film material is applied to the insulating layer 40 and cured, and then the electric heating film layer 20 is formed. A conductive material is applied to the electric heating film layer 20 or the insulating layer 40, and then the electrode layer 50 is formed after curing.

[0047] In addition, the insulating layer 40 is not essential, and when the infrared radiation film layer 30 itself is insulating, the insulating layer 40 is not necessary, and the electric heating film layer 20 is directly formed into the infrared radiation film layer 30. Only when the infrared radiation film layer 30 itself is not insulating, it is necessary to provide an insulating layer 40 between the infrared radiation film layer 30 and the electric heating film layer 20 to insulate them.

[0048] As shown in Figs. 6 and 7, in another embodiment of the present invention, the circumferential outer side of the heat generating member forms the storage area A, that is, the storage area A is provided around the base 10 along the circumferential direction of the base 10 (that is, the base 10 is pin-shaped and inserted into the aerosol-generating substrate). The electric heating film layer 20 is provided on the wall surface of the base 10 in the circumferential direction, and the infrared emitting film layer 30 is provided on the side of the electric heating film layer 20 that is away from the base 10, and each heating area 21 covers the corresponding emitting area. In this way, when in use, the base 10 is inserted into the inside of the aerosol-generating substrate, and the aerosol-generating substrate is positioned on the circumferential side of the base 10. Then, when the user inhales, the electric heating film layer 20 is energized, and each heating area 21 directly transfers heat to the corresponding emitting area, thereby exciting each emitting area of ​​the infrared emitting film layer 30 to perform infrared emitting heating on the aerosol-generating substrate, and the aerosol-generating substrate is heated and roasted to generate aerosol. The generated aerosol flows from the second end a2 of the base body 10 to the first end a1 of the base body 10 along with the suction airflow, and is finally inhaled by the user.

[0049] As shown in Figures 8 and 9, an insulating layer 40 is further provided between the electric heating film layer 20 and the substrate 10, and the insulating layer 40 is used to insulate the electric heating film layer 20 from the substrate 10. Optionally, a high-temperature resistant insulating material is applied to the outer wall of the substrate 10, and the insulating layer 40 is formed after curing. An electric heating film material is applied to the insulating layer 40 and fixed, and then the electric heating film layer 20 is formed. An infrared emitting film material is applied to the electric heating film layer 20, and the infrared emitting film layer 30 is formed after curing.

[0050] The insulating layer 40 is not essential, and when the base 10 itself is insulating, the insulating layer 40 is not necessary, and the electric heating film layer 20 may be directly formed on the base 10. Only when the base 10 itself is not insulating, it is necessary to provide an insulating layer 40 between the base 10 and the electric heating film layer 20 to insulate them from each other.

[0051] Alternatively, a protective layer 60 may be formed on the infrared-emitting film layer 30 to protect the infrared-emitting film layer 30. The protective layer 60 may be, for example, a glaze layer, and is not limited thereto as long as it has a protective effect, is resistant to high temperatures, and transmits infrared rays emitted by the infrared-emitting film layer 30.

[0052] As shown in FIG. 10, optionally, the electric heating film layer 20 may have a U-shaped structure, the open end 22 of the U-shaped structure is located at the second end a2 of the substrate 10, and the closed end 23 of the U-shaped structure is located at the first end a1 of the substrate 10. The electric heating film layer 20 includes a first heating region located at the closed end 23 of the U-shaped structure and a second heating region located at the open end 22 of the U-shaped structure. The electrode layer 50 is electrically connected to the two ends of the open end 22 of the U-shaped structure, thereby realizing the series connection of the first heating region and the second heating region. Of course, in other embodiments, the electric heating film layer 20 may adopt other shapes, such as covering the entire peripheral surface of the substrate 10, and is not limited here.

[0053] As shown in FIG. 11, in another embodiment of the present invention, a base 10 has a first side 11 and a second side 12 separated from the first side 11. More specifically, the base 10 is sheet-shaped, and the first side 11 and the second side 12 are two side surfaces of the sheet-shaped base 10. The first side 11 and the second side 12 of the base 10 form the above-mentioned storage area A. An electric heating film layer 20 and an infrared radiation film layer 30 are laminated in order from the inside to the outside on one surface of the first side 11 and the second side 12, and an infrared radiation film layer 30 is provided on the other of the first side 11 and the second side 12.

[0054] More specifically, the electric heating film layer 20 is provided on the surface of the first side 11 of the substrate 10, and the infrared radiation film layer 30 includes a first sub-infrared radiation film layer 30a provided on the electric heating film layer 20 and a second sub-infrared radiation film layer 30b provided on the surface of the second side 12 of the substrate 10. Each radiation region includes a first sub-radiation region located in the first sub-infrared radiation film layer 30a and a second sub-radiation region located in the second sub-infrared radiation film layer 30b. The first sub-radiation region covers the corresponding heating region 21, and the second sub-radiation region and the corresponding heating region 21 are thermally conducted by the substrate 10 between them.

[0055] In this way, when in use, the base 10 is inserted into the inside of the aerosol-generating substrate, and the aerosol-generating substrate is positioned on the first side 11 and the second side 12 of the base 10. Then, when the user inhales, the electric heating film layer 20 is energized, and the heat generated by the electric heating film layer 20 is directly transferred to the first sub-infrared radiation film layer 30a, thereby exciting the first sub-infrared radiation film layer 30a to perform infrared radiation heating on the aerosol-generating substrate located on the first side 11 of the base 10. At the same time, the heat generated by the electric heating film layer 20 is transferred from the first side 11 of the base 10 to the second side 12 of the base 10, and further heats the second sub-infrared radiation film layer 30b formed on the surface of the second side 12 of the base 10, thereby exciting the second sub-infrared radiation film layer 30b to perform infrared radiation heating on the aerosol-generating substrate located on the second side 12 of the base 10.

[0056] 12, an insulating layer 40 may be provided on both the surfaces of the first side 11 and the second side 12 of the base 10, and the insulating layer 40 insulates the base 10 from other layers. Of course, the insulating layer 40 is not essential, and if the base 10 itself is insulating, the insulating layer 40 may not be provided.

[0057] In addition, the electric heating film layer 20 is not necessarily provided only on the surface of the first side 11 of the base 10. In other embodiments, the electric heating film layer 20 and the infrared radiation film layer 30 may be laminated sequentially from the inside to the outside on both the surfaces of the first side 11 and the second side 12 of the base 10.

[0058] More specifically, the electric heating film layer 20 includes a first sub-electric heating film layer provided on the surface of the first side 11 and a second sub-electric heating film layer provided on the surface of the second side 12. The infrared radiation film layer 30 includes a first sub-infrared radiation film layer 30a provided on the first sub-electric heating film layer 20 and a second sub-infrared radiation film layer 30b provided on the second sub-electric heating film layer 20. Each heating region 21 includes a first sub-heating region located on the first sub-electric heating film layer and a second sub-heating region located on the second sub-electric heating film layer, and the first sub-heating region and the second sub-heating region of each heating region are approximately overlapped in orthogonal projection on the plane on which the substrate 10 is located, and the first sub-infrared radiation region of each infrared radiation region covers the first sub-heating region of the corresponding heating region 21, and the second sub-infrared radiation region of each infrared radiation region approximately covers the second sub-heating region of the corresponding heating region 21. In other words, after the electric heating film layer 20 is energized, the first sub-electric heating film layer is used to heat the first sub-infrared radiation film layer 30a, so that the first sub-infrared radiation film layer 30a radiates infrared radiation to the aerosol-generating substrate located on the first side 11 of the base 10, and at the same time, the second sub-electric heating film layer heats the second sub-infrared radiation film layer 30b, so that the second sub-infrared radiation film layer 30b radiates infrared radiation to the aerosol-generating substrate located on the second side 12 of the base 10, so that the aerosol-generating substrate on both the first side 11 and the second side 12 of the base 10 can be uniformly heated and roasted.

[0059] Each technical feature of the above-mentioned embodiments can be combined in any combination, and for the sake of brevity, a description has not been given of all possible combinations of each technical feature in the above-mentioned embodiments, but these combinations of technical features should be considered to be within the scope described in this specification unless there is a contradiction.

[0060] The above examples merely show some embodiments of the present application, and although the description is relatively specific and detailed, it should not be understood as limiting the scope of the claims. Those skilled in the art can make various modifications and improvements without departing from the concept of the present application, all of which belong to the scope of protection of the present application. Therefore, the scope of protection of the present application is subject to the scope of the accompanying claims.

Claims

1. A heating element, a substrate (10) having a receiving area (A) for receiving an aerosol-generating substrate; an electric heating membrane layer (20) provided on the substrate (10) and including at least two heating regions (21); the base (10) further has a first end (a1) and a second end (a2) which are opposite ends of the base (10), the at least two heating regions (21) are arranged in sequence from the first end (a1) to the second end (a2), and among the heating regions (21), the heating power per unit area of ​​the heating region (21) located at the first end (a1) is greater than the heating power per unit area of ​​the other heating regions (21); A heating member characterized by:

2. The heat generating power per unit area of ​​each of the heating regions (21) from the second end (a2) to the first end (a1) gradually increases.

2. The heating element according to claim 1.

3. The at least two heating zones (21) are connected in series with each other, The resistance value per unit area of ​​each of the heating regions (21) from the second end (a2) to the first end (a1) gradually increases.

3. The heating element according to claim 2.

4. The at least two heating zones (21) are connected in parallel with each other, The resistance value per unit area of ​​each of the heating regions (21) from the second end (a2) to the first end (a1) gradually decreases.

3. The heating element according to claim 2.

5. The heating member further includes an infrared radiation film layer (30), the infrared radiation film layer (30) being provided on the base body (10) and including at least two radiation regions that are heated in a one-to-one correspondence with the at least two heating regions (21).

5. The heating member according to claim 1, wherein the heating member is a heat-resistant member.

6. The base body (10) is cylindrical and has a hollow cavity, the hollow cavity being used as the storage location (A); The infrared radiation film layer (30) is provided on the inner wall of the substrate (10), the electric heating film layer (20) is provided on the outer wall of the substrate (10), and each heating area (21) and the corresponding radiation area are thermally conducted by the substrate (10) therebetween.

6. The heating element according to claim 5.

7. An insulating layer (40) is provided between the outer wall of the substrate (10) and the electric heating film layer (20).

7. The heating element according to claim 6.

8. The base body (10) is cylindrical and has a hollow cavity, the hollow cavity being used as the storage location (A); The infrared radiation film layer (30) is provided on the outer wall of the base body (10) and transmits infrared radiation heating through the base body (10) to the aerosol generating substrate in the storage location (A), the electric heating film layer (20) is provided on the surface of the infrared radiation film layer (30) facing away from the base body (10), and each of the heating regions (21) covers the corresponding radiation region.

6. The heating element according to claim 5.

9. The circumferential outer side of the base (10) forms the storage location (A), the electric heating film layer (20) is provided on the circumferential outer wall surface of the base (10), the infrared radiation film layer (30) is provided on the side of the electric heating film layer (20) that is away from the base (10), and each of the heating regions (21) covers the corresponding radiation region.

6. The heating element according to claim 5.

10. An insulating layer (40) is provided between the electric heating film layer (20) and the substrate (10).

10. The heating element according to claim 9.

11. The base (10) has a first side (11) and a second side (12) separated from the first side (11), and the first side (11) and the second side (12) of the base (10) form the storage location (A); The electric heating film layer (20) and the infrared radiation film layer (30) are laminated in order from inside to outside on one surface of the first side (11) and the second side (12), and the infrared radiation film layer (30) is provided on the other surface of the first side (11) and the second side (12), or The electric heating film layer (20) and the infrared radiation film layer (30) are laminated on the surfaces of the first side (11) and the second side (12) in order from the inside to the outside.

6. The heating element according to claim 5.

12. An aerosol forming device that is heated and does not burn, Comprising a heating element (100) according to any one of claims 1 to 11, An aerosol forming device characterized in that it is heated and does not burn.

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