Heating assembly and aerosol generating device

Abstract

The invention provides a heating assembly and an aerosol generating device. The aerosol generating device comprises a power supply assembly and the heating assembly. The power supply assembly supplies power to the heating assembly. The heating assembly comprises a containing structure, a heating film and a heat uniformizing layer. The accommodating structure is used for accommodating an aerosol generating product; the heating film is arranged on the accommodating structure to heat the accommodating structure; the accommodating structure is used for transferring heat into the aerosol generating product; the heat uniformizing layer comprises at least two heat uniformizing sections which are arranged in the axial direction of the heating film at intervals. The heat uniformizing section is arranged on the heating film in a surrounding mode in the circumferential direction of the heating film. Through the arrangement of the plurality of uniform heat layers, the problem of temperature difference between the surface and the center of the aerosol generating product is improved, and meanwhile, the heating efficiency and the overall energy efficiency of the heating assembly are also improved.

Description

Technical Field

[0001] The present application belongs to the technical field of aerosol generation, and more specifically, to a heating component and an aerosol generating device. Background Art

[0002] Heat Not Burning (HNB) aerosol generating devices are gaining more and more attention and favor due to their advantages such as safety, convenience, health and environmental protection.

[0003] Existing aerosol generating devices generally include a heating component and a power supply component; wherein the heating component is used to heat and atomize the aerosol generating product when powered on to form an aerosol; the power supply component is connected to the heating component and is used to supply power to the heating component.

[0004] Circumferential heating is a common heating method for aerosol generating devices to heat aerosol generating products. Specifically, the aerosol generating product is inserted into the heating component to heat the aerosol generating product in a circumferential direction through the heating component. However, the existing heating components will inevitably have local heat concentration and uneven heating due to processing errors such as the thickness, width and gap of the heating film or unreasonable design. In order to ensure the uniformity of heating of the aerosol generating product by the heating component, a uniform heating layer can be set on the surface of the heating component to evenly conduct the heat through the uniform heating layer. However, the setting of the uniform heating layer will cause the heat in the central area of ​​the heating component to be quickly conducted to the axial ends of the heating component, which will eventually lead to the problem of low heating efficiency in the central area of ​​the heating component and low overall energy efficiency. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a heating component and an aerosol generating device to solve the technical problems in the prior art that the setting of a uniform heating layer leads to low heating efficiency in the central area of ​​the heating component and low overall energy efficiency.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a heating component, including a containing structure, a heating film and a uniform heating layer; the containing structure is used to contain an aerosol generating product; the heating film is arranged on the containing structure to heat the containing structure; the containing structure is used to transfer heat to the aerosol generating product; the uniform heating layer includes at least two uniform heating sections arranged at intervals along the axial direction of the heating film; the uniform heating sections are arranged on the heating film along the circumference of the heating film.

[0007] In a possible design, the uniform heating section is a uniform heating ring connected end to end along the circumference of the heating film.

[0008] In a possible design, the uniform heat section is a uniform heat sheet arranged at intervals from beginning to end along the circumference of the heating film;

[0009] Alternatively, the uniform heating section includes a plurality of uniform heating blocks spaced apart along the circumference of the heating film.

[0010] In a possible design, the equivalent length of the uniform heating section along the circumference of the heating film is A, and the length of the heating film along its circumference is X, then A / X≥60%.

[0011] In a possible design, the equivalent length of the uniform heating section along the axial direction of the heating film is B, the number of the uniform heating sections is N, the length of the heating film along its axial direction is Y, and NB / Y≤80%.

[0012] In a possible design, the spacing between at least two adjacent uniform heating sections along the axial direction of the heating film is greater than 0.8 mm and less than 3 mm.

[0013] In a possible design, the uniform heating section is arranged around the inner side or the outer side of the heating film.

[0014] In a possible design, the thermal conductivity of the uniform heat section is greater than 200 W / (m·K);

[0015] And / or, the thickness of the uniform heating section is less than 0.2 mm.

[0016] In a possible design, the containing structure includes a tube body and a radiation layer; the tube body is used to contain the aerosol generating product; the radiation layer is arranged on the inner wall of the tube body, and the radiation layer is used to radiate infrared rays when heated.

[0017] In a possible design, the receiving structure includes a tube body, the inner wall of the tube body is attached to a second insulating layer, and the heating film is attached to the inner wall of the second insulating layer.

[0018] In a possible design, a wear-resistant protective layer is also provided on the inner side of the heating film.

[0019] The beneficial effect of the heating assembly provided by the embodiment of the present application is that: the heating assembly provided by the embodiment of the present application, by setting a uniform heating layer, the uniform heating layer includes at least two uniform heating sections arranged at intervals along the axial direction of the heating film, and the uniform heating sections are arranged on the heating film in a circumferential direction of the heating film. Among them, the uniform heating sections are arranged in a circumferential direction of the heating film, so that the heat generated by the corresponding parts of the heating film can be transferred in a circumferential direction through the uniform heating sections, thereby increasing the temperature uniformity of the heating film in a circumferential direction, improving the heat conduction efficiency of the aerosol generating product in a circumferential direction, and improving the temperature difference problem between the surface and the center of the aerosol generating product. At the same time, the uniform heating sections are arranged at intervals along the axial direction of the heating film, so that the uniform heating sections can be arranged according to the heating conditions of the heating film along its axial direction. For example, one of the uniform heating sections can be arranged at an axial position of the heating film with higher heating, and another uniform heating section can be arranged at an axial position of the heating film with lower heating, or even other uniform heating sections can be arranged at axial positions of the heating film with relatively medium heating. Therefore, the temperature of each heating layer of the heating film can be uniformly transferred circumferentially and axially through the uniform heating layer to form a more obvious temperature gradient, and the heat from the higher temperature area will not be directly transferred axially to the lower temperature area, thereby improving the heating efficiency of the central area of ​​the heating component and improving the overall energy efficiency of the heating component.

[0020] On the other hand, the present application also provides an aerosol generating device, comprising a power supply component and the above-mentioned heating component; the power supply component supplies power to the heating component.

[0021] The beneficial effect of the aerosol generating device provided in the embodiment of the present application is that: the aerosol generating device provided in the embodiment of the present application, through the setting of the above-mentioned heating component, makes the aerosol generating device have a higher heating effect on the aerosol generating product and better overall energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A schematic diagram of the assembly structure of the aerosol generating device and the aerosol generating product provided in the embodiment of the present application;

[0024] Figure 2 A schematic diagram of the assembly structure of a heating component and a power supply component in an aerosol generating device provided in an embodiment of the present application;

[0025] Figure 3A schematic cross-sectional view of the assembly of a heating component and an aerosol generating product in an aerosol generating device provided in an embodiment of the present application;

[0026] Figure 4 A schematic cross-sectional view of a heating assembly in an aerosol generating device provided in an embodiment of the application;

[0027] Figure 5 for Figure 4 A is a magnified schematic diagram of the part in the middle;

[0028] Figure 6 An exploded schematic diagram of a heating assembly in an aerosol generating device provided in an embodiment of the present application;

[0029] Figure 7 An exploded schematic diagram of another heating assembly in an aerosol generating device provided in an embodiment of the present application;

[0030] Figure 8 Axial position and temperature coordinate diagram of a heating component in an aerosol generating device provided in an embodiment of the present application;

[0031] Fig. 9 A schematic diagram of a structure in which a uniform heating section in a heating assembly in an aerosol generating device provided in an embodiment of the present application is in the form of a ring;

[0032] Fig.10 A schematic diagram of a structure in which a uniform heating section in a heating assembly in an aerosol generating device provided in an embodiment of the present application is in the form of a sheet;

[0033] Fig.11 A schematic diagram of a structure in which a uniform heating section in a heating assembly in an aerosol generating device provided in an embodiment of the present application includes a plurality of uniform heating blocks;

[0034] Fig.12 A schematic diagram of the uniform heating section and the heating film in the heating assembly of the aerosol generating device provided in an embodiment of the present application;

[0035] Fig.13 A schematic diagram of the structure of a heating film in a heating assembly in an aerosol generating device provided in an embodiment of the present application;

[0036] Fig.14 An exploded schematic diagram of a heating assembly in an aerosol generating device provided in another embodiment of the present application;

[0037] Fig.15 A schematic cross-sectional view of a heating assembly in an aerosol generating device provided in another embodiment of the present application.

[0038] Among them, the reference numerals in the figure are:

[0039] 1000, aerosol generating device; 100, heating component; 110, containing structure; 111, tube body; 112, radiation layer; 120, heating film; 121, connecting part; 122, heating wire; 123, heating wire group; 130, uniform heating layer; 131, uniform heating section; 131a, uniform heating ring; 131b, uniform heating sheet; 131c, uniform heating block; 140, film tape; 150, first insulating layer; 160, soldering pad; 170, lead wire; 180, second insulating layer; 190, wear-resistant protective layer; 200, power supply component; 2000, aerosol generating product. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] Circumferential heating is a common heating method for aerosol generating devices to heat aerosol generating products. Specifically, the aerosol generating product is inserted into the heating component to heat the aerosol generating product in a circumferential direction through the heating component. However, the existing heating components will inevitably have local heat concentration and uneven heating due to processing errors such as the thickness, width and gap of the heating film or unreasonable design. In order to improve the heating uniformity of the heating component to the aerosol generating product, a uniform heating layer can be set on the surface of the heating component, and the heat generated by the heating film is conducted to the surrounding of the heating film through the uniform heating layer. Among them, the uniform heating layer is a whole piece structure, so that the heat of the heating component can be transferred axially and circumferentially, which improves the heating uniformity of the heating component to the aerosol generating product to a certain extent. However, the applicant's research found that the setting of the uniform heating layer will cause the heat in the central area of ​​the heating component to be quickly conducted to the axial ends of the heating component, which ultimately leads to the problem of low heating efficiency in the central area of ​​the heating component and low overall energy efficiency.

[0045] In order to solve the above problems, the inventors of the present application, after a long period of research, finally provide an aerosol generating device 1000, which arranges a uniform heating layer 130 in the heating component 100, and arranges the uniform heating layer 130 in sections along the axial direction of the heating component 100, and arranges the uniform heating sections 131 along the circumferential direction of the heating component 100, so that the heat generated by the heating component 100 can be transferred circumferentially through each uniform heating section 131, and at the same time, it can also avoid quickly transferring the heat in the central area of ​​the heating component 100 to the axial end positions, so as to improve the heating efficiency of the central area, and then improve the energy efficiency of the entire heating component 100.

[0046] See also Figures 1 to 3 The embodiment of the present application provides an aerosol generating device 1000, which includes a heating component 100 and a power component 200. The heating component 100 is used to accommodate an aerosol generating product 2000, and atomize the aerosol generating product 2000 to generate an aerosol when powered on. The power component 200 is electrically connected to the heating component 100 and is used to supply power to the heating component 100.

[0047] The aerosol-generating product 2000 may be a solid matrix, such as one or more powders, particles, fragments, strips, or flakes of one or more plant leaves such as tobacco, herb leaves, tea leaves, and mint leaves; or, the solid matrix may contain additional volatile aroma compounds to be released when the matrix is ​​heated. Of course, the aerosol-generating product 2000 may also be a liquid matrix or a paste matrix, such as oils or liquid medicines with added aroma components.

[0048] Please also read Figures 4 to 7The heating component 100 includes a containing structure 110, a heating film 120 and a uniform heating layer 130; the containing structure 110 is used to contain the aerosol generating product 2000; the heating film 120 is arranged on the containing structure 110 to heat the containing structure 110; the containing structure 110 is used to transfer heat to the aerosol generating product 2000; the uniform heating layer 130 includes at least two uniform heating sections 131 spaced apart along the axial direction of the heating film 120; the uniform heating section 131 is arranged on the heating film 120 along the circumference of the heating film 120.

[0049] In the embodiment of the present application, a uniform heating layer 130 is provided, and the uniform heating layer 130 includes at least two uniform heating sections 131 spaced apart along the axial direction of the heating film 120, and the uniform heating sections 131 are disposed on the heating film 120 in a circumferential direction of the heating film 120. The uniform heating sections 131 are disposed in a circumferential direction of the heating film 120, so that the heat generated by the corresponding parts of the heating film 120 can be transferred in a circumferential direction through the uniform heating sections 131, thereby increasing the temperature uniformity of the heating film 120 in a circumferential direction, improving the circumferential heat conduction efficiency of the aerosol generating article 2000, and improving the temperature difference problem between the surface and the center of the aerosol generating article 2000. At the same time, the uniform heating sections 131 are arranged at intervals along the axial direction of the heating film 120, so that the uniform heating sections 131 can be arranged according to the heating conditions of the heating film 120 along its axial direction. For example, one of the uniform heating sections 131 can be arranged at an axial position of the heating film 120 with higher heating, and another uniform heating section 131 can be arranged at an axial position of the heating film 120 with lower heating, or even other uniform heating sections 131 can be arranged at an axial position of the heating film 120 with relatively medium heating, so that the temperature of each heating layer of the heating film 120 can be transferred circumferentially and axially through the uniform heating layer 130 to form a more obvious temperature gradient, and the heat from the higher temperature area will not be directly transferred axially to the lower temperature area, thereby improving the heating efficiency of the central area of ​​the heating component 100 and improving the overall energy efficiency of the heating component 100.

[0050] In addition, a specific temperature gradient is formed in the axial direction of the aerosol generating product 2000, and the distribution of the temperature field can be improved according to the set requirements, so that the fragrance of the aerosol generating product 2000 is stimulated layer by layer, and a more lasting and full fragrance experience is obtained. At the same time, the formation of the temperature gradient also helps to reduce the aerosol temperature in the first two puffs of the puff.

[0051] In one embodiment, see Figures 4 to 7 The uniform heating section 131 is disposed around the outside of the heating film 120. It can be understood that in other embodiments of the present application, the uniform heating section 131 can also be disposed around the inside of the heating film 120, which is not limited here.

[0052] See also Figure 8, is a coordinate relationship diagram of the axial position and temperature of the heating component 100, wherein the horizontal L represents the axial position of the heating component 100. For example, the axial position of the bottom end of the heating component 100 can be set as the coordinate origin, and L represents the position coordinate of the heating component 100 from bottom to top. T represents the temperature of the heating component 100 corresponding to different axial positions. N1 is the relationship line between the axial position and the temperature of the heating component 100 when the uniform heating layer 130 is a whole piece structure in the prior art, and N2 is the relationship line between the axial position and the temperature of the heating component 100 when the uniform heating layer 130 includes a plurality of uniform heating segments 131 spaced apart along the axial direction in the embodiment of the present application. From Figure 8 It can be seen that when the uniform heat layer 130 is arranged in sections, the heat generated by the heating component 100 can form a more obvious temperature gradient.

[0053] In one embodiment, after the heating film 120 is powered on, the middle area along its axis generates higher heat, while the two end areas generate lower heat. It should be noted that the middle area is not necessarily the middle of the heating film 120, but can also be slightly offset from the middle to the two ends.

[0054] In one embodiment, the number of uniform heating sections 131 is at least three, of which two uniform heating sections 131 correspond to the two axial end regions of the heating film 120, and the remaining uniform heating sections 131 are arranged between the two end uniform heating sections 131. The two end uniform heating sections 131 can realize the uniform transfer of the temperature of the two end regions of the heating film 120 along the circumferential direction, and the middle uniform heating section 131 can realize the uniform transfer of the temperature of the middle region of the heating film 120 along the circumferential direction. Since the uniform heating sections 131 are arranged at intervals along the axial direction, no heat transfer will occur between adjacent uniform heating sections 131, that is, the heat of the heating film 120 can be uniformly transferred along the circumferential direction, and at the same time, the temperature gradient of the heating film 120 along the axial direction can be maintained, that is, the distribution of the temperature field can be improved according to the set requirements, so that the fragrance of the aerosol generating product 2000 is stimulated layer by layer, and a more lasting and full fragrance experience is obtained.

[0055] In one embodiment, see Figure 7 and Fig. 9 The uniform heating section 131 is a uniform heating ring 131a connected end to end along the circumference of the heating film 120, that is, the uniform heating section 131 is arranged around the heating film 120, so that the heat of the heating film 120 can be evenly transferred along its circumference, the temperature uniformity of the heating film 120 along the circumference is increased, the circumferential heat conduction efficiency of the aerosol generating product 2000 is improved, and the temperature difference problem between the surface and the center of the aerosol generating product 2000 is improved.

[0056] In another embodiment of the present application, see Figure 6 and Fig.10The uniform heating section 131 is a uniform heating sheet 131b arranged at intervals along the circumference of the heating film 120, that is, the uniform heating section 131 is a non-closed loop structure, a sheet structure. During installation, the two opposite ends of the uniform heating section 131 along the circumference can be respectively corresponded to the areas of the heating film 120 with higher heating along the circumference, so that the heat of the heating film 120 with higher heating area can be transferred along the circumference to the areas with lower heating through the uniform heating section 131, so that the heat of the heating film 120 is transferred along its circumference. In addition, the sheet structure is easy to manufacture and install, and the installation position of the sheet structure can be adjusted according to the need for uniform heating.

[0057] In another embodiment of the present application, please refer to Fig.11 The uniform heating section 131 includes a plurality of uniform heating blocks 131c spaced apart along the circumference of the heating film 120. Due to the structural design of the heating film 120 (the structure of the heating film 120 will be described later), the heating capacity of the heating film 120 is unevenly distributed along the circumference. By providing a plurality of uniform heating blocks 131c spaced apart along the circumference of the heating film 120, the heating position with higher heating can be distributed to the periphery through the uniform heating blocks 131c. In this way, the heat of the heating film 120 can be transferred along the circumference, and the area of ​​the uniform heating section 131 along the circumference can be reduced, thereby reducing the material cost of the uniform heating section 131.

[0058] In one embodiment, see Figure 6 , the uniform heating section 131 is rectangular or square after being unfolded. In other embodiments of the present application, the uniform heating section 131 may also be in other shapes, such as circular, elliptical, polygonal or other irregular shapes, for example, a roughly rectangular shape surrounded by curves, or one or more through holes are opened in the middle of the rectangle, which is not limited here.

[0059] In one embodiment, see Fig.12 , the equivalent length of the uniform heating section 131 along the circumferential direction of the heating film 120 is A, and the length of the heating film 120 along its circumferential direction is X, then A / X≥60%.

[0060] Among them, please refer to Figure 6 When the uniform heating section 131 is a regular rectangle or square, the equivalent length A of the uniform heating section 131 along the circumference of the heating film 120 is the length of the uniform heating section 131. When the uniform heating section 131 is an irregular shape, the equivalent length A of the uniform heating section 131 along the circumference of the heating film 120 is the length of the equivalent rectangle or square after the hole or periphery of the uniform heating section 131 is filled.

[0061] When the uniform heating section 131 includes a plurality of uniform heating blocks 131 c spaced apart along the circumference of the heating film 120 , A is the sum of the equivalent lengths of the uniform heating blocks 131 c along the circumference of the heating film 120 .

[0062] In the embodiment of the present application, through the design of A / X ≥ 60%, it can be ensured that the heat of the heating film 120 can be effectively distributed along the circumference to reduce local heat accumulation.

[0063] In one embodiment, see Fig.12 , the equivalent length of the uniform heating section 131 along the axial direction of the heating film 120 is B, the number of the uniform heating sections 131 is N, and the length of the heating film 120 along its axial direction is Y, then NB / Y≤80%. It should be noted that NB refers to N multiplied by B.

[0064] Among them, see Figure 6 When the uniform heating section 131 is a regular rectangle or square, the equivalent length B of the uniform heating section 131 along the axial direction of the heating film 120 is the width of the uniform heating section 131. When the uniform heating section 131 is an irregular shape, the equivalent length B of the uniform heating section 131 along the axial direction of the heating film 120 is the width of the equivalent rectangle or square after the hole or periphery of the uniform heating section 131 is filled.

[0065] In the embodiment of the present application, through the design of NB / Y≤80%, it is ensured that the uniform heat layer 130 will not conduct a large amount of heat from the middle area of ​​the heating film 120 to the axial ends of the heating film 120, thereby reducing the heat loss in the middle area of ​​the heating film 120, ensuring the heating efficiency of the middle area of ​​the heating film 120, and improving the situation where the overall energy efficiency of the heating film 120 is too low.

[0066] In one embodiment, the spacing between at least two adjacent uniform heating sections 131 along the axial direction of the heating film 120 is greater than 0.8 mm and less than 3 mm. When the spacing between two adjacent uniform heating sections 131 is too small, heat transfer between the adjacent uniform heating sections 131 will occur, and the heat in the middle area of ​​the heating film 120 will be transferred to both ends, causing heat loss; when the spacing between two adjacent uniform heating sections 131 is too large, the circumferential heat transfer cannot be achieved at a larger axial position of the heating film 120, causing local overheating. When the spacing between two adjacent uniform heating sections 131 is between 0.8 mm and 3 mm, the heat of the heating film 120 can be uniformly transferred along the circumferential direction, while preventing the heat in the middle area of ​​the heating film 120 from being transferred to both ends in the axial direction.

[0067] In one embodiment, the uniform heating layer 130 includes two uniform heating segments 131 disposed at intervals, and the interval between the two uniform heating segments 131 is between 0.8 mm and 3 mm.

[0068] In another embodiment of the present application, the uniform heating layer 130 includes three, four, five or more uniform heating segments 131 that are sequentially spaced apart along the axial direction of the heating film 120. Among them, the spacing between at least two adjacent uniform heating segments 131 is between 0.8 mm and 3 mm, and the spacing between other adjacent uniform heating segments 131 may be less than 0.8 mm, or may be between 0.8 mm and 3 mm.

[0069] In one embodiment, the thermal conductivity of the uniform heating section 131 is greater than 200W / (m·K). The greater the thermal conductivity of the uniform heating section 131, the better the uniform heating effect of the uniform heating section 131. Generally, the heating film 120 is made of steel, and the thermal conductivity of the steel is 50-60W / (m·K), while the thermal conductivity of the uniform heating section 131 is greater than 200W / (m·K), so that a better uniform heating effect can be achieved on the basis of the heating film 120, and the formed temperature gradient is more obvious.

[0070] In one embodiment, the heat-uniform section 131 is made of materials such as copper, silver or graphite, and the thermal conductivity of copper, silver or graphite is greater than 200 W / (m·K), thereby achieving a better heat-conducting effect.

[0071] In one embodiment, the thickness of the uniform heating section 131 is less than 0.2 mm. The thicker the uniform heating section 131 is, the more difficult it is for the uniform heating section 131 to conduct heat. Therefore, the thickness of the uniform heating section 131 needs to be set smaller.

[0072] In one embodiment, see Fig.13 The heating film 120 includes two connecting parts 121 and a plurality of heating wires 122. The heating wires 122 are arranged in parallel with each other. One end of each heating wire 122 is connected to the two connecting parts 121 respectively, and the other ends of at least two heating wires 122 are connected together.

[0073] For details, please refer to Fig.13 , the two connecting parts 121 are both arranged near one end of the receiving structure 110 and are arranged at intervals along the circumference of the receiving structure 110. The heating film 120 includes at least two groups of heating wire groups 123, each group of heating wire groups 123 includes two heating wires 122, the bottom ends of the two heating wires 122 are respectively connected to the two connecting parts 121, and the top ends of the two heating wires 122 are connected by a connecting wire extending along the circumference of the receiving structure 110. Each heating wire 122 is bent and extended along the axis of the receiving structure 110, for example, along an S-shaped curve.

[0074] In the embodiment of the present application, the heating film 120 is provided with a plurality of heating wires 122 that are bent and extended in the axial direction of the receiving structure 110, and each heating wire 122 is sequentially spaced in the circumferential direction of the receiving structure 110, so that the heat generated by the heating film 120 is transmitted in the axial direction and circumferential direction of the receiving structure 110, ensuring that each position of the aerosol generating product 2000 in the axial direction and circumferential direction can be heated. In addition, the temperature gradient generated by the heating film 120 can be achieved by adjusting various parameters such as the degree of bending, length, width, and spacing between each heating wire 122.

[0075] In one embodiment, the heating component 100 also includes two soldering pads 160 and two leads 170, the two soldering pads 160 are respectively connected to the two connecting parts 121, one end of the two leads 170 are respectively welded to the two soldering pads 160, and the other end of the two leads 170 is connected to the power supply component 200, so that the heating film 120 can be powered by the power supply component 200.

[0076] In one embodiment, see Figure 6 and Figure 7 The heating assembly 100 further includes a film strip 140. The heating film 120 is attached to the outer wall of the receiving structure 110, and the film strip 140 is sleeved outside the heating film 120. The film strip 140 is made of insulating material. The setting of the film strip 140 can insulate the heating film 120 and the uniform heating layer 130, both of which are made of metal materials, from each other, so as to avoid the situation where the uniform heating layer 130 generates unreasonable heat due to electrical conduction with the heating film. In addition, the setting of the film strip 140 also facilitates the installation of each uniform heating section 131 in the uniform heating layer 130.

[0077] In one embodiment, see Figure 5 and Figure 7 The receiving structure 110 includes a tube body 111 and a radiation layer 112. The tube body 111 is used to receive the aerosol generating product 2000. The radiation layer 112 is arranged on the inner side wall of the tube body 111, and the radiation layer 112 is used to radiate infrared rays when heated, so as to use infrared rays to heat and atomize the aerosol generating product 2000 received in the tube body 111. Since infrared rays have certain penetrability and do not require a medium, the heating efficiency is high, which can effectively improve the preheating efficiency of the aerosol generating product 2000 and reduce the temperature difference between the inside and outside of the aerosol generating product 2000, so that the baking of the aerosol generating product 2000 is more uniform, and the problem of the aerosol generating product 2000 being burnt due to local high temperature is avoided. At the same time, by arranging the radiation layer 112 on the inner side wall of the tube body 111, the infrared rays radiated by the radiation layer 112 can be directly radiated to the aerosol generating product 2000 without passing through the tube body 111, and the utilization rate of infrared rays is high.

[0078] In one embodiment, the radiation layer 112 can be formed on the inner wall of the tube body 111 by screen printing, sputtering, coating, printing, etc. The radiation layer 112 can be an infrared layer, and the material of the infrared layer includes at least one of high infrared emissivity materials such as perovskite system, spinel system, carbide, silicide, nitride, oxide and rare earth material.

[0079] In one embodiment, the tube body 111 is a hollow tubular structure. The tube body 111 can be made of insulating materials, such as quartz tubes, ceramic tubes, or mica tubes. Preferably, the tube body 111 can be a transparent quartz tube to facilitate infrared rays to pass through. Of course, the tube body 111 can also be made of non-insulating materials, such as stainless steel, aluminum, and other metals. Figure 6 and Figure 7 When the tube body 111 is made of metal material, a first insulating layer 150 is further provided between the tube body 111 and the heating film, and the tube body 111 and the heating film are isolated by the first insulating layer 150 .

[0080] In another embodiment of the present application, the above-mentioned receiving structure 110 can also be used to directly conduct heat to the aerosol generating article 2000. In this case, the receiving structure 110 includes a tube body 111, but does not include a radiation layer 112. The tube body 111 is made of a material with heat conductivity, for example, the tube body 111 is made of copper, aluminum or stainless steel. In addition, in other embodiments, the upper receiving structure 110 can also transfer heat to the aerosol generating article 2000 by heat convection.

[0081] In another embodiment of the present application, see Fig.14 and Fig.15 The receiving structure 110 includes a tube body 111, the inner wall of the tube body 111 is provided with a second insulating layer 180, and the heating film 120 is provided on the inner wall of the second insulating layer 180. In this embodiment, by arranging the heating film 120 on the inner side of the tube body 111, the heating path of the aerosol generating product 2000 by the heating film 120 becomes shorter, so that the heat transfer efficiency can be significantly improved, which is conducive to the rapid generation of aerosol and the stimulation of fragrance, and the utilization efficiency of the battery energy of the power supply assembly 200 is improved. In addition, the provision of the second insulating layer 180 allows the heating film 120 and the tube body 111 to be insulated from each other.

[0082] In addition, in this embodiment, the heat-leveling layer 130 can be directly attached to the outer wall of the tube body 111 .

[0083] In one embodiment, see Fig.14 and Fig.15The inner side of the heating film 120 is also provided with a wear-resistant protective layer 190. The provision of the wear-resistant protective layer 190 can prevent the heating film 120 from peeling off due to long-term plugging and unplugging of the aerosol generating product 2000.

[0084] Optionally, the wear-resistant protective layer 190 may be made of ceramic or glass, and the thickness of the wear-resistant protective layer 190 is less than 0.2 mm.

[0085] Optionally, the heating film 120 is made of a mixture of glass phase and metal phase, and the thickness of the heating film 120 is less than 0.3 mm.

[0086] Optionally, the second insulating layer 180 is made of ceramic or glass, and the thickness of the second insulating layer 180 is less than 0.2 mm.

[0087] Optionally, the tube body 111 is made of ceramic material, such as zirconium oxide or aluminum oxide; the thickness of the tube body 111 ranges from 0.1 mm to 0.8 mm.

[0088] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A heating component, characterized in that: It includes a containing structure, a heating film and a uniform heating layer; the containing structure is used to contain an aerosol generating product; the heating film is arranged on the containing structure to heat the containing structure; the containing structure is used to transfer heat to the aerosol generating product; the uniform heating layer includes at least two uniform heating sections arranged at intervals along the axial direction of the heating film; the uniform heating sections are arranged on the heating film along the circumference of the heating film.

2. The heating assembly according to claim 1, characterized in that The uniform heating section is a uniform heating ring connected end to end along the circumference of the heating film.

3. The heating assembly according to claim 1, characterized in that The uniform heat section is a uniform heat sheet arranged at intervals from beginning to end along the circumference of the heating film; Alternatively, the uniform heating section includes a plurality of uniform heating blocks spaced apart along the circumference of the heating film.

4. The heating assembly according to claim 1, characterized in that The equivalent length of the uniform heating section along the circumferential direction of the heating film is A, and the length of the heating film along its circumferential direction is X, then A / X≥60%.

5. The heating assembly according to claim 1, characterized in that The equivalent length of the uniform heating section along the axial direction of the heating film is B, the number of the uniform heating sections is N, and the length of the heating film along its axial direction is Y, then NB / Y≤80%.

6. The heating assembly according to claim 1, characterized in that The spacing between at least two adjacent uniform heating sections along the axial direction of the heating film is greater than 0.8 mm and less than 3 mm.

7. The heating assembly according to any one of claims 1 to 6, characterized in that: The uniform heating section is disposed around the inner side or the outer side of the heating film.

8. The heating assembly according to any one of claims 1 to 6, characterized in that: The thermal conductivity of the uniform heat section is greater than 200 W / (m·K); And / or, the thickness of the uniform heating section is less than 0.2 mm.

9. The heating assembly according to any one of claims 1 to 6, characterized in that: The containing structure comprises a tube body and a radiation layer; the tube body is used to contain the aerosol generating product; the radiation layer is arranged on the inner side wall of the tube body, and the radiation layer is used to radiate infrared rays when being heated.

10. An aerosol generating device, characterized in that: It comprises a power supply component and a heating component as described in any one of claims 1 to 9; the power supply component supplies power to the heating component.

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