Heating assembly and aerosol generating device

Abstract

The present application provides a heating assembly and an aerosol generating device. The heating assembly includes a housing structure, at least one heating film, and a power supply assembly. Here, the housing structure has a proximal opening, and is used to contain an aerosol generating product through the proximal opening and radiate infrared rays to heat the aerosol generating product when heated. At least one heating film is linearly arranged on the housing structure and is used to heat the housing structure when energized. Here, at least a part of each heating film extends along the longitudinal direction of the housing structure. The power supply assembly includes a first electrode and a second electrode, and both ends of each heating film are electrically connected to the first electrode and the second electrode respectively to supply power to the at least one heating film. Since the heating assembly effectively improves the heating efficiency and has good heating uniformity, the problem of scorching due to local high temperature of the aerosol generating product is avoided.

Description

Technical Field

[0001] <Cross - reference to Related Applications> This application claims priority from a Chinese patent application with the application number 202211131838.5 filed on September 16, 2022, and the entire content of this Chinese patent application is incorporated herein by reference into this application.

[0002] The present invention relates to the technical field of electronic atomization, and in particular, to a heating assembly and an aerosol generating device.

Background Art

[0003] Heat Not Burning (HNB) aerosol generating devices have advantages such as safe use, convenience, health, and environmental friendliness, and are thus attracting more and more attention and support from people.

[0004] Conventional heat - not - burning aerosol generating devices generally include a heating assembly and a power supply assembly. Here, when the heating assembly is energized, it heats and atomizes an aerosol - generating product, thereby forming an aerosol. The power supply assembly is connected to the heating assembly and is used to supply power to the heating assembly.

[0005] However, conventional heating assemblies have low heating efficiency, a large temperature difference between the inside and outside of the aerosol - generating product, and poor heating uniformity. Also, when a conventional heating assembly heats, the high - temperature region is located in the central region of the heating element, the aerosol generation rate is slow, and furthermore, the temperature field cannot be designed as expected, and it is inconvenient to design the positions of other asymmetric high - temperature regions.

Summary of the Invention

[0006] The heating assembly and aerosol generating device provided by this application aim to solve the problems that conventional heating assemblies have low heating efficiency, a large temperature difference between the inside and outside of the aerosol - generating product, and low heating uniformity.

[0007] To solve the above technical problems, one technical solution adopted by the present application is as follows. A heating assembly is provided. The heating assembly includes a housing structure, at least one heating film, and a power supply assembly. Here, the housing structure has a proximal opening, through which an aerosol generating product is accommodated and heated by emitting infrared rays to heat the aerosol generating product. At least one of the heating films is arranged linearly in the housing structure and is used to heat the housing structure when energized. Here, at least a part of each heating film extends along the longitudinal direction of the housing structure. The power supply assembly includes a first electrode and a second electrode. Both ends of each heating film are electrically connected to the first electrode and the second electrode respectively to supply power to at least one of the heating films.

[0008] Here, the heating film includes a plurality of heating wires, at least two of the plurality of heating wires are connected in parallel, and at least a part of each heating wire extends along the longitudinal direction of the housing structure.

[0009] Here, at least a part of the plurality of heating wires is curved.

[0010] Here, the curve is a U-shaped curve or an S-shaped curve.

[0011] Here, the plurality of heating wires each extend along the longitudinal direction of the housing structure, and the first end of a part of the heating wires is electrically connected to the first electrode, and the second end is electrically connected to the second end of the remaining part of the heating wire. The first end of the remaining part of the heating wire is electrically connected to the second electrode.

[0012] Here, the heating film further includes a first electrical connection portion extending along the circumferential direction of the housing structure, and the second end of each heating wire is electrically connected to the first electrical connection portion respectively.

[0013] Here, the heating film further includes a second electrical connection portion and a third electrical connection portion, Among the plurality of heating wires, the first ends of some of the heating wires are electrically connected to the second electrical connection portion respectively, and are electrically connected to the first electrode through the second electrical connection portion, and / or the first ends of the remaining heating wires among the plurality of heating wires are electrically connected to the third electrical connection portion respectively, and are electrically connected to the second electrode through the third electrical connection portion.

[0014] Here, the heating film includes a first heating wire, a second heating wire, a third heating wire, and a fourth heating wire. The first heating wire and the second heating wire are connected in parallel between the first electrode and the first electrical connection portion, and the third heating wire and the fourth heating wire are connected in parallel between the second electrode and the first electrical connection portion.

[0015] Here, each of the heating wires is a U-shaped curve.

[0016] Here, the plurality of heating wires are symmetrically distributed along the central axis in the width direction of the heating film, and two adjacent heating wires are symmetrically distributed along the central axis where they are located.

[0017] Here, both ends of each heating wire are electrically connected to the first electrode and the second electrode respectively.

[0018] Here, each heating wire includes a first portion, a second portion, and a third portion connected in sequence. The first portion and the third portion extend along the longitudinal direction of the accommodating structure respectively, and are electrically connected to the first electrode and the second electrode respectively, and the second portion extends along the circumferential direction of the accommodating structure.

[0019] Here, the heating film includes a first heating wire and a second heating wire connected in parallel.

[0020] The first portion of the first heating wire presents a curve, and the second portion and the third portion of the first heating wire present straight lines.

[0021] The first portion, the second portion, and the third portion of the second heating wire are all straight lines.

[0022] Here, the length of the second heating wire is longer than the length of the first heating wire, and the second heating wire surrounds the first heating wire.

[0023] Here, the first electrode and the second electrode are located at the same end of the housing structure.

[0024] Here, the at least one heating film is configured such that output densities on both sides of a midpoint in the longitudinal direction of the housing structure are different.

[0025] Here, the surface of the housing structure is divided into a first region and a second region by a plane perpendicular to the longitudinal direction of the housing structure and passing through the midpoint. The second region is located on a side away from the proximal opening of the first region, and the output density of the at least one heating film in the first region is greater than the output density of the at least one heating film in the second region.

[0026] To solve the above technical problems, one technical solution adopted by this application is as follows. An aerosol generating device is provided, and the aerosol generating device includes a heating assembly and a power supply assembly. Here, the heating assembly is the above heating assembly, and the power supply assembly is electrically connected to the heating assembly and is used to supply power to the heating assembly.

[0027] The beneficial effects of the embodiments of the present application are as follows. Different from the prior art, the present application provides a heating assembly and an aerosol generating device. By installing a housing structure and at least one heating film in the heating assembly, at least one heating film is installed in the housing structure, and at least a part of each heating film extends along the longitudinal direction of the housing structure. When the at least one heating film is energized, the housing structure is heated, so that the housing structure is heated and emits infrared rays. The infrared rays are used to heat and atomize the aerosol generating product accommodated in the housing structure. Here, due to the infrared heating method and the certain permeability of infrared rays, no medium is required, the heating efficiency is high, the preheating efficiency of the aerosol generating product can be effectively improved, and the temperature difference between the inside and outside of the aerosol generating product can be effectively reduced. Thereby, the baking of the aerosol generating product becomes more uniform, and the problem of scorching of the aerosol generating product caused by local high temperature is avoided. At the same time, by installing a power supply assembly, the power supply assembly includes a first electrode and a second electrode, and both ends of each heating film are electrically connected to the first electrode and the second electrode respectively. Thereby, power is supplied to each heating film through the power supply assembly, forming a single-stage heating assembly.

Brief Description of the Drawings

[0028]

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MODE FOR CARRYING OUT THE INVENTION

[0029] Hereinafter, the technical solutions of the embodiments of the present application will be clearly and completely described with reference to the drawings of the embodiments of the present application. As can be understood, the described embodiments are only a part of the embodiments of the present application, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive labor belong to the protection scope of the present application.

[0030] In this application, terms such as "first", "second", "third", etc. are used only for explanatory purposes and should not be construed as indicating or implying relative importance or suggesting the number of the indicated technical features. Therefore, features defined as "first", "second", "third" can explicitly or implicitly include at least one of this feature. In the description of this application, "a plurality" means at least two, for example, two, three, etc., unless there is a clear and specific definition otherwise. All directional indications (such as up, down, left, right, front, back, etc.) within the embodiments of this application are used only to interpret the relative positional relationship, movement status, etc. between each component in a specific posture (such as shown in the drawings), and it is indicated that when the specific posture changes, the directional indication changes accordingly. Also, the terms "comprising", "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, and optionally further includes steps or units not listed, or optionally further includes other steps or units specific to these processes, methods, products or devices.

[0031] As used herein, "embodiment" means that a specific feature, structure or characteristic described with reference to an embodiment may be included in at least one embodiment of this application. The repeated appearance of this associated word in each part of the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. As will be explicitly and implicitly understood by those skilled in the art, the embodiments described herein can be combined with other embodiments.

[0032] Hereinafter, this application will be described in detail with reference to the drawings and embodiments.

[0033] Referring to FIG. 1, FIG. 1 is a schematic diagram of an aerosol generation system provided by an embodiment of this application.

[0034] In this embodiment, an aerosol generation system is provided, and the aerosol generation system includes an aerosol generation device 1 and an aerosol generation product 2 accommodated in the aerosol generation device 1. Here, the aerosol generation device 1 is used to heat and atomize the aerosol generation product 2 to form an aerosol for a user to inhale. The aerosol generation device 1 can specifically be used in technical fields such as medical treatment, beauty, health management, and electronic atomization. The specific structure and function can refer to the description of the aerosol generation device 1 provided in the following embodiments. The aerosol generation product 2 can use a solid matrix and can include one or more kinds of powders, granules, fragments, strips, or sheets of plant leaves such as tobacco, herb leaves, tea leaves, and mint leaves. Alternatively, the solid matrix may include additional volatile aromatic compounds released when the matrix is heated. Of course, the aerosol generation product may be a liquid matrix or a paste-like matrix such as oil and a medicinal solution to which an aromatic component is added.

[0035] Referring to FIG. 2, FIG. 2 is a schematic diagram of an aerosol generation device provided by an embodiment of the present application. In this embodiment, an aerosol generation device 1 is provided, and the aerosol generation device 1 includes a heating assembly 10 and a power supply assembly 20. Here, the heating assembly 10 is used to accommodate and atomize the aerosol generation product 2 when energized to generate an aerosol. The specific structure and function of the heating assembly 10 can refer to the heating assembly 10 according to any of the following embodiments. The power supply assembly 20 is electrically connected to the heating assembly 10 and is used to supply power to the heating assembly 10. The power supply assembly 20 may specifically be a lithium-ion battery.

[0036] Referring to FIGS. 3 and 4, FIG. 3 is a cross-sectional view of a heating assembly provided by the first embodiment of the present application. FIG. 4 is a perspective view of the heating assembly provided by the embodiment of the present application. In the first embodiment, a heating assembly 10 is provided. The heating assembly 10 includes a housing structure 11, at least one heating film 12, and a power supply assembly 13.

[0037] Here, as shown in FIG. 4, the power supply assembly 13 includes a first electrode 131 and a second electrode 132. Both ends of at least one heating film 12 are electrically connected to the first electrode 131 and the second electrode 132 respectively. Thereby, power is simultaneously supplied to the at least one heating film 12 through the first electrode 131 and the second electrode 132, and one - end heating is performed, that is, the at least one heating film 12 is supplied with power sharing the first electrode 131 and the second electrode 132, and the power supply power of the at least one heating film 12 is the same.

[0038] The first electrode 131 and the second electrode 132 of the power supply assembly 13 may be located at the same end of the accommodation structure 11, and each extends along the circumferential direction of the accommodation structure 11. In a specific embodiment, the first electrode 131 and the second electrode 132 may specifically be located at one end away from the proximal opening of the accommodation structure 11. And the first electrode 131 and the second electrode 132 may specifically be formed of a metal material with high electrical conductivity such as silver, gold, copper or an alloy containing gold, silver, and copper.

[0039] As shown in FIG. 3, the accommodation structure 11 includes a base body 111 and a radiation layer 112. The shape of the base body 111 is a hollow tube, and the base body 111 has an accommodation cavity 110, a proximal opening and a distal opening communicating with the accommodation cavity 110. The proximal opening and the distal opening are oppositely arranged along the longitudinal direction C of the base body 111. The accommodation cavity 110 is used to accommodate the aerosol - generating product 2. The aerosol - generating product 2 is specifically accommodated in or taken out from the accommodation cavity 110 along the longitudinal direction C of the accommodation cavity 110 through the proximal opening. Here, the proximal opening is the end close to the nozzle of the heating assembly 10. Specifically, the base body 111 may be a hollow tubular structure, and the accommodation cavity 110 is formed surrounded by the hollow tubular structure. Specifically, the outer diameter of the base body 111 is uniform along its longitudinal direction C. The base body 111 may specifically be a hollow cylinder.

[0040] Specifically, the substrate 111 may be made of an insulating material. For example, the substrate 111 may be a quartz tube, a ceramic tube, a mica tube, or the like. Preferably, the substrate 111 may be a transparent quartz tube to facilitate the transmission of infrared rays. Of course, the substrate 111 may also be manufactured using a non-insulating material, for example, metals such as stainless steel or aluminum may be employed.

[0041] The radiation layer 112 is installed on the inner surface of the side wall of the substrate 111, and when heated, it emits infrared rays and is used to heat and atomize the aerosol generating product 2 accommodated in the accommodation cavity 110 by utilizing the infrared rays. The above method of heating the aerosol generating product 2 using infrared rays does not require a medium because infrared rays have a certain penetrability, has high heating efficiency, effectively improves the preheating efficiency of the aerosol generating product 2, reduces the temperature difference between the inside and outside of the aerosol generating product 2, thereby enabling the aerosol generating product 2 to be fired more uniformly and avoiding the problem that the aerosol generating product 2 is scorched due to local high temperatures. At the same time, by installing the radiation layer 112 on the inner surface of the substrate 111, the infrared rays radiated from the radiation layer 112 can directly irradiate the aerosol generating product 2 without passing through the substrate 111, and the utilization rate of infrared rays is high.

[0042] Here, the radiation layer 112 can specifically be formed on the entire inner surface of the side wall of the substrate 111 by using methods such as silk printing, sputtering, coating, printing, etc. The radiation layer 112 may specifically be an infrared layer, and the material of the infrared layer includes at least one of high infrared emissivity materials such as perovskite-based, spinel-based, carbides, silicides, nitrides, oxides, and rare earth materials.

[0043] Combining FIGS. 3 to 5, FIG. 5 is an exploded schematic view of FIG. 4. The heating film 12 is linear and covers the housing structure 11. In one embodiment, at least one heating film 12 is disposed on the side away from the radiation layer 112 of the base 111 and is installed at intervals on the surface of the housing structure 11 along the circumferential direction of the housing structure 11. It is used to generate heat when energized to heat the radiation layer 112, whereby the heat dissipation layer 112 is heated to radiate infrared rays. Specifically, for the heating film 12, a resistive material that releases Joule heat when energized, such as a thick film printed resistive layer, a thin film printed resistive layer, or a nanometer resistive layer, is used.

[0044] Here, as shown in FIG. 3, when the base 111 is an insulating base 111, the heating film 12 is specifically installed on the surface of the side away from the radiation layer 112 of the base 111, and the heat generated by the heating film 12 is thermally conducted to the radiation layer 112 through the base 111 to heat the radiation layer 112. In this embodiment, it may be understood that the heating film 12 is directly disposed on the surface of the housing structure 11, that is, the heating film 12 is in direct contact with the surface of the housing structure 11. When the base 111 is a non-insulating base 111, preferably, the base 111 is made of a metal material, for example, made of stainless steel. As shown in FIG. 6, FIG. 6 is a cross-sectional view of a heating assembly provided by a specific embodiment of the present application. A first high-temperature resistant insulating layer 113 is further formed on the side away from the radiation layer 112 of the base 111, and the heating film 12 is specifically installed on the surface of the side away from the base 111 of the first insulating layer 113, thereby preventing a short circuit between the heating film 12 and the base 111. In this case, the heat generated by the heating film 12 is sequentially conducted through the first insulating layer 113 and the base 111 to the radiation layer 112 to heat the radiation layer 112. In this embodiment, it may be understood that the heating film 12 is disposed on the housing structure 11 through the first insulating layer 113, that is, the heating film 12 is in indirect contact with the surface of the housing structure 11. In a specific embodiment, the first insulating layer 113 may employ a glaze layer.

[0045] In this embodiment, the heat utilization rate of the heating assembly 10 is improved, and further the heating efficiency of the aerosol-generating product 2 is further improved. Referring to FIG. 7, FIG. 7 is a schematic structural diagram of the aerosol-generating product provided by the embodiment of the present application being accommodated in an accommodation structure. When the aerosol-generating product 2 is accommodated in the accommodation cavity 110, the aerosol-generating product 2 is in direct contact with the inner surface of the side wall of the accommodation structure 11 (for example, the surface of the radiation layer 112). In this way, infrared rays can be used to radiate into the interior of the aerosol-generating product 2 to heat the aerosol-generating product 2, and at the same time, the heat of the heating film 12 can be conducted to the aerosol-generating product 2 through the accommodation structure 11 (for example, the radiation layer 112), thereby further heating the aerosol-generating product 2 using this heat, improving the utilization rate of the heat, and improving the atomization efficiency and the generation rate of the aerosol.

[0046] In other embodiments, as shown in FIG. 8, FIG. 8 is a schematic structural diagram of an aerosol generating product provided by another embodiment of the present application being accommodated within an accommodation structure. When the aerosol generating product 2 is accommodated within the accommodation cavity 110, the aerosol generating product 2 may be installed at a distance from the inner surface of the side wall of the accommodation structure 11 (for example, the radiation layer 112), thereby preventing the aerosol generating product 2 from being damaged by the radiation layer 112. In this embodiment, it may be understood that the aerosol generating product 2 is mainly heated by infrared radiation. Furthermore, the surfaces of the heating film 12 or / and the radiation layer 112 may be coated with a protective layer, and specifically, a glaze layer may be adopted for the protective layer. Here, the thickness of the radiation layer 112 may be 10 - 100 μm. Preferably, the thickness of the radiation layer 112 is 20 - 40 μm. In this embodiment, the radiation layer 112 can be fabricated by a thick film printing method. The material of the radiation layer 112 may include one or more of black silicon, cordierite, transition metal oxide-based spinel, rare earth oxide, ion co-doped perovskite, silicon carbide, zircon, and boron nitride. The thickness of the radiation layer 112 may be 1 - 10 μm. Preferably, the thickness of the radiation layer 112 is 1 - 5 μm. In this embodiment, the radiation layer 112 is specifically a thin film coating. The material of the radiation layer 112 may also be CrC, TiCN, or a diamond-like carbon film (DLC).

[0047] Combined with FIG. 9, FIG. 9 is a schematic diagram of the accommodation structure of the heating film and the power supply assembly shown in FIG. 4, which is unfolded along the circumferential direction of the accommodation structure 11. In a specific embodiment, the number of heating films 12 is one, and one heating film 12 includes a plurality of heating wires 121 connected in parallel, and at least two of the plurality of heating wires 121 are connected in parallel. And each heating wire 121 is linear. At least a part of each heating wire 121 extends along the longitudinal direction C of the accommodation structure 11. It may be understood that the length dimension of the linear heating wire 121 is much larger than the width dimension.

[0048] Specifically, as shown in FIG. 9, at least a part of the plurality of heating wires 121 is curved. The curve may be an S-shaped curve. Alternatively, as shown in FIG. 10, FIG. 10 is a schematic diagram of a heating film 12 and a power supply assembly 13 developed along the circumferential direction of the housing structure 11 provided by another embodiment of the present application. The curve may be a U-shaped curve. In other specific embodiments, each heating wire 121 may be other irregular curves, such as a combination of an S-shaped curve and a U-shaped curve, and the present application is not limited thereto.

[0049] In a specific embodiment, as shown in FIG. 9, the plurality of heating wires 121 are each extended along the longitudinal direction C of the housing structure 11, and the first end of a part of the heating wires 121 (hereinafter referred to as the first set of heating wires) is electrically connected to the first electrode 131. The second end of each heating wire 121 in the first set of heating wires is electrically connected to the second end of the remaining heating wires 121 (hereinafter referred to as the second set of heating wires). The first end of each heating wire in the second set of heating wires 121 is electrically connected to the second electrode 132. Thereby, the plurality of heating wires 121 in the first set of heating wires are connected in parallel with each other, the plurality of heating wires 121 in the second set of heating wires are connected in parallel, and the first set of heating wires and the second set of heating wires are connected in series.

[0050] Specifically, each heating wire 121 is an S-shaped curve extending along the longitudinal direction C of the housing structure 11. Each heating wire 121 may also be a U-shaped curve extending along the longitudinal direction C of the housing structure 11. The plurality of heating wires 121 can be symmetrically distributed along the central axis L of the heating film 12. Two adjacent heating wires 121 are symmetrically distributed along the central axis of these two heating wires 121. Here, the central axis L is the central axis of the heating film 12 after being developed along the width direction D.

[0051] Specifically, the heating assembly 10 further includes a first electrical connection portion 122, a second electrical connection portion 123, and a third electrical connection portion 124. The first electrical connection portion 122 is specifically located at one end of the accommodating structure 11 close to the proximal opening. The second ends of the plurality of heating wires 121 are respectively electrically connected to the first electrical connection portion 122, and the electrical connection of the second ends of the plurality of heating wires 121 is realized through the first electrical connection portion 122. Thereby, the first set of heating wires and the second set of heating wires are connected in series.

[0052] The first ends of the plurality of heating wires 121 in the first set of heating wires are respectively electrically connected to the second electrical connection portion 123, and thereby are electrically connected to the first electrode 131 through the second electrical connection portion 123. The first ends of the plurality of heating wires 121 in the second set of heating wires are respectively electrically connected to the third electrical connection portion 124, and thereby are electrically connected to the second electrode 132 through the third electrical connection portion 124. Thereby, power is supplied to the heating film 12 through the first electrode 131 and the second electrode 132.

[0053] Specifically, the heating film 12 includes four heating wires 121, namely a first heating wire, a second heating wire, a third heating wire, and a fourth heating wire. Here, the first heating wire and the second heating wire are connected in parallel between the first electrode 131 and the first electrical connection portion 122. The third heating wire and the fourth heating wire are connected in parallel between the second electrode 132 and the first electrical connection portion 122. That is, the four heating wires 121 of the heating film 12 are first connected in parallel two by two, and then connected in series.

[0054] In this specific embodiment, at least one heating film 12 is configured such that the output densities on both sides of the midpoint in the longitudinal direction C of the accommodating structure 11 are different. That is, due to the heat generated by at least one heating film 12, the high-temperature region in the accommodating cavity 110 of the accommodating structure 11 is not located in the central region of the accommodating cavity 110 along the longitudinal direction C. In this way, the temperature field of the accommodating structure 11 can be designed as expected, and it is easy to design the positions of other asymmetric high-temperature regions.

[0055] Specifically, as shown in FIGS. 4 to 9, the surface of the housing structure 11 is divided into a first region A and a second region B by a plane M that is perpendicular to the longitudinal direction C of the housing structure 11 and passes through the midpoint. The second region B is located on the side away from the proximal opening of the first region A. A part of each heating wire 121 of each heating film 12 is located in the first region A, and the remaining part is located in the second region B. And the resistance density per unit area of at least one heating film 12 in the first region A is different from the resistance density per unit area of at least one heating film 12 in the second region B. Thereby, after at least one heating film 12 is energized, there is a difference between the heating power of the first region A and the heating power of the second region B of the housing structure 11, and further, two regions with different temperatures are formed in the first region A and the second region B of the housing structure 11. At the same time, by using the above-mentioned midline plane M as the dividing line between the first region A and the second region B, it can be guaranteed that the formed high-temperature region is offset from the midpoint in the longitudinal direction C of the accommodation cavity 110, and it becomes easy to design the positions of other asymmetric high-temperature regions.

[0056] Specifically, in order to increase the heating rate of the heating assembly 10 in the vicinity of the proximal opening and accelerate the aerosol generation rate, the resistance density per unit area of at least one heating film 12 in the first region A can be made larger than the resistance density per unit area of the plurality of heating films 12 in the second region B. Since the entire heating films 12 in the first region A and the second region B are in series, after at least one heating film 12 is energized, the power density in the region with a large resistance density is large, that is, the heating power density in the first region A is larger than the heating power density in the second region B. Accordingly, the region where the inner surface of the substrate 111 in the first region A overlaps with the heating film 12 is larger than the region where the radiation layer 112 in the second region B overlaps with the heating film 12, and the radiation layer 112 corresponding to the first region A has a higher temperature than the radiation layer 112 corresponding to the second region B, radiating more infrared rays, thereby obtaining the expected design effect that the temperature of the first region A of the housing structure 11 is higher than the temperature of the second region B, that is, the desired design effect that the high temperature region of the heating assembly 10 is located in the first region A, effectively improving the atomization efficiency of the part of the aerosol generation product 2 corresponding to the first region A and accelerating the generation of the aerosol.

[0057] In a specific embodiment, with reference to FIG. 9, the materials and thicknesses of the heating lines 121 in at least one heating film 12 are the same. If it is desired to design different temperature regions as desired, by controlling the widths of the plurality of heating parts in different regions and the lengths along the longitudinal direction C of the accommodation structure 11 of at least one heating film 12 included in each region, the magnitudes of the resistance densities in different regions can be controlled, and further the design effect of different temperature regions can be realized. For example, the widths of the heating lines 121 of at least one heating film 12 are the same, and along the longitudinal direction C of the accommodation structure 11, the length of the portion of at least one heating film 12 located in the first region A is shorter than the length of the portion located in the second region B, and the cross-sectional areas are different, so that the resistance density per unit area of at least one heating film 12 in the first region A is greater than the resistance density per unit area of at least one heating film 12 in the second region B. Here, the width of the heating line 121 refers to the size of the heating line 121 along the width direction D.

[0058] In other specific embodiments, with reference to FIGS. 11 to 13, FIG. 11 is a perspective view of a heating assembly provided by another embodiment of the present application, FIG. 12 is an exploded schematic view of FIG. 11, and FIG. 13 is a schematic view of the heating film and the power supply assembly shown in FIG. 11 developed along the circumferential direction of the accommodation structure. The differences from the embodiments corresponding to FIGS. 4 to 10 are as follows. Both ends of each heating line 121 are electrically connected to the first electrode 131 and the second electrode 132 respectively.

[0059] In this embodiment, as shown in FIG. 13, each heating line 121 includes a first portion 125, a second portion 126, and a third portion 127 that are sequentially connected. The first portion 125 and the third portion 127 extend along the longitudinal direction C of the accommodation structure 11 and are electrically connected to the first electrode 131 and the second electrode 132 respectively. The second portion 126 extends along the circumferential direction of the accommodation structure 11. Here, a corner is formed at the connection location between the first portion 125 and the second portion 126, and the corner may be chamfered. A corner is formed at the connection location between the second portion 126 and the third portion 127, and the corner may also be chamfered.

[0060] Specifically, the first portion 125 of each heating wire 121 extends from the second region B to the first region A, and the second portion 126 of each heating wire 121 is located in the first region A of the housing structure 11. The third portion 127 of each heating wire 121 extends from the first region A to the second region B and contacts the second electrode 132 to be electrically connected thereto.

[0061] Specifically, referring to FIGS. 12 and 13 together, the heating film 12 may include a first heating wire 121a and a second heating wire 121b connected in parallel. Here, the first portion 125 of the first heating wire 121a may be curved, for example, a U-shaped curve. The second portion 126 and the third portion 127 of the first heating wire 121a are straight. The first portion 125, the second portion 126, and the third portion 127 of the second heating wire 121b are all straight. Specifically, the length of the second heating wire 121b is longer than the length of the first heating wire 121a, and the second heating wire 121b surrounds the first heating wire 121a.

[0062] In a specific embodiment, both ends of each heating wire 121 can be directly connected to the first electrode 131 or the second electrode 132, that is, the second electrical connection portion 123 or the third electrical connection portion 124 is not necessary.

[0063] In other embodiments, the resistance density of the corresponding region can be controlled by controlling the material or thickness of each heating wire 121 in the corresponding region. As long as it can be ensured that the resistance density of at least a part of at least one heating film 12 located in the first region A is different from the resistance density of at least a part of at least one heating film 12 located in the second region B, the present application is not limited thereto.

[0064] As can be understood by those skilled in the art, in the housing structure 11, another plane or a plurality of parallel planes perpendicular to its longitudinal direction C can be used as dividing lines, whereby the housing structure 11 can be divided into a plurality of regions. The heating film 12 in which at least two of the plurality of regions are located has different widths along the longitudinal direction C of the housing structure 11, thereby correspondingly forming different temperature regions. Here, the high-temperature region in the plurality of different temperature regions and the midpoint of the longitudinal direction C of the housing structure 11 are offset.

[0065] The heating assembly 10 provided by this embodiment heats the aerosol-generating product 2 by infrared radiation. Compared with the solutions of resistive heating or electromagnetic heating, since infrared rays have a certain permeability, no medium is required, the heating efficiency is high, the preheating efficiency of the aerosol-generating product 2 can be effectively improved, and the temperature difference between the inside and outside of the aerosol-generating product 2 can be effectively reduced, effectively preventing the problem that the aerosol-generating product 2 burns due to local high temperature. Thereby, the aerosol-generating product 2 is uniformly fired, and the problem that the aerosol-generating product 2 burns due to local high temperature is avoided. At the same time, at least one heating film 12 is configured such that the high-temperature region generated in the accommodation cavity 110 of the accommodation structure 11 is offset from the midpoint of the longitudinal direction C of the accommodation cavity 110, so that a temperature field as desired can be designed, and the design of other asymmetric high-temperature region positions can be facilitated. Also, by controlling the lengths of the plurality of heating wires 121 of at least one heating film 12 in different regions, the resistance density of at least one heating film 12 in different regions is controlled, thereby controlling the output density of the heating film 12 included in each different region. In this way, after at least one heating film 12 is energized, there can be a difference in the heating output of at least two heating regions, thereby forming a plurality of regions with different temperatures. By purposefully designing the position of the high-temperature region of the accommodation structure 11 suitable for atomizing the aerosol-generating product 2, the aerosol generation rate is improved. Also, by making the resistance density of the portion of at least one heating film 12 located in the first region A of at least one heating film 12 greater than the resistance density of the portion located in the second region B, the temperature of the first region A of the accommodation structure 11 is higher than the temperature of the second region B, further effectively improving the atomization efficiency of the first region A and accelerating the aerosol generation rate.

[0066] In the second embodiment, referring to FIG. 14, FIG. 14 is a cross-sectional view of the heating assembly provided by the second embodiment of the present application. The heating assembly 10 provided in the second embodiment is different from the heating assembly 10 provided in the first embodiment as follows. The radiation layer 112 is installed on the outer surface of the side wall of the base 111.

[0067] In this embodiment, as shown in FIG. 14, when the radiation layer 112 is an insulating radiation layer 112, the heating film 12 is specifically installed on the surface of the radiation layer 112 away from the base 111. The heat generated after the heating film 12 is energized is directly thermally conducted to the radiation layer 112, the radiation layer 112 is heated to generate infrared rays, and the infrared rays pass through the transparent base 111 and enter the accommodation cavity 110 to heat the aerosol generating product 2 accommodated in the accommodation cavity 110. In this embodiment, the aerosol generating product 2 may also be in direct contact with the transparent base 111, whereby the heat of the base 111 can be directly conducted to the aerosol generating product 2 for heating, or the aerosol generating product 2 is arranged at a distance from the base 111.

[0068] When the radiation layer 112 is made of a non-insulating material, as shown in FIG. 15, FIG. 15 is a cross-sectional view of the heating assembly provided by another specific embodiment of the present application. In order to avoid the short circuit of the heating film 12, a second insulating layer 114 is further provided on the surface of the radiation layer 112 away from the substrate 111, and the second insulating layer 114 is arranged between the radiation layer 112 and the heating film 12.

[0069] In the third embodiment, referring to FIG. 16, FIG. 16 is a cross-sectional view of the heating assembly provided by the third embodiment of the present application. Yet another heating assembly 10 is provided. The heating assembly 10 of the third embodiment is different from the heating assembly 10 provided in the above embodiment as follows. The accommodation structure 11 includes the base 111.

[0070] The shape of the base body 111 is a hollow tube, and the base body 111 includes a main body and an infrared radiation material dispersed in the main body. The main body has a storage cavity 110 for storing the aerosol generating product 2 and a proximal opening of the storage cavity 110. When heated, the base material 111 radiates infrared rays to heat the aerosol generating product 2. As can be understood, in this embodiment, the base body 111 itself is heated to radiate infrared rays, and no infrared layer is additionally provided on the surface of the base body 111. Specifically, the base body 111 may be a quartz tube.

[0071] In order to improve the amount of infrared rays radiated and the heating rate, a radiation infrared layer may be further installed on the surface of the base body 111. For details, reference may be made to the above, and the description is omitted here.

[0072] The above are the embodiments of the present application, which do not limit the scope of the patent of the present application. Any equivalent structure or equivalent process conversion performed using the content of the specification and drawings of the present application, or directly or indirectly applied to other related technical fields, are all similarly included within the scope of patent protection of the present application.

Claims

1. A heating assembly including a housing structure, at least one heating film, and a power supply assembly, wherein: The housing structure has a proximal opening, through which an aerosol generating product is housed and heated, and emits infrared rays to heat the aerosol generating product when heated; At least one heating film is linear and is disposed on the aerosol generating product and is used to heat the aerosol generating product when energized. Here, at least a part of each heating film extends along the longitudinal direction of the housing structure; The power supply assembly includes a first electrode and a second electrode, and both ends of each heating film are electrically connected to the first electrode and the second electrode respectively to supply power to at least one heating film. A heating assembly characterized by this.

2. The heating film includes a plurality of heating wires, at least two of the plurality of heating wires are connected in parallel, and at least a part of each heating wire extends along the longitudinal direction of the housing structure. The heating assembly according to claim 1, characterized by this.

3. At least a part of the plurality of heating wires are curved. The heating assembly according to claim 2, characterized by this.

4. The curve is a U-shaped curve or an S-shaped curve. The heating assembly according to claim 3, characterized by this.

5. The plurality of heating wires each extend along the longitudinal direction of the housing structure, and a first end of a part of the heating wires is electrically connected to the first electrode, and a second end is electrically connected to a second end of the remaining part of the heating wires. The heating assembly according to claim 3, characterized in that a first end of the remaining part of the heating wires is electrically connected to the second electrode.

6. The heating film further includes a first electrical connection portion extending along the circumferential direction of the housing structure, and a second end of each heating wire is electrically connected to the first electrical connection portion respectively. The heating assembly according to claim 5, characterized by this.

7. The heating film further includes a second electrical connection portion and a third electrical connection portion. A first end of a part of the plurality of heating wires is electrically connected to the second electrical connection portion respectively and is electrically connected to the first electrode through the second electrical connection portion, and / or Of the plurality of heating wires, the first end portions of the heating wires of the remaining portions are each electrically connected to the third electrical connection portion and are electrically connected to the second electrode via the third electrical connection portion. The heating assembly according to claim 6, characterized in that.

8. The heating film includes a first heating wire, a second heating wire, a third heating wire, and a fourth heating wire. The first heating wire and the second heating wire are connected in parallel between the first electrode and the first electrical connection portion, and the third heating wire and the fourth heating wire are connected in parallel between the second electrode and the first electrical connection portion. The heating assembly according to claim 7, characterized in that.

9. Each of the heating wires is a U-shaped curve. The heating assembly according to claim 8, characterized in that.

10. The plurality of heating wires are symmetrically distributed along the central axis in the width direction of the heating film, and two adjacent heating wires are symmetrically distributed along the central axis where they are located. The heating assembly according to claim 9, characterized in that.

11. Both ends of each of the heating wires are electrically connected to the first electrode and the second electrode, respectively. The heating assembly according to claim 3, characterized in that.

12. Each of the heating wires includes a first portion, a second portion, and a third portion that are sequentially connected. The first portion and the third portion extend along the longitudinal direction of the accommodating structure and are electrically connected to the first electrode and the second electrode, respectively. The second portion extends along the circumferential direction of the accommodating structure. The heating assembly according to claim 11, characterized in that.

13. The heating film includes a first heating wire and a second heating wire connected in parallel. The first portion of the first heating wire is curved, and the second portion and the third portion of the first heating wire are straight. The first portion, the second portion, and the third portion of the second heating wire are all straight. The heating assembly according to claim 11, characterized in that.

14. The length of the second heating wire is greater than the length of the first heating wire, and the second heating wire surrounds the first heating wire. The heating assembly according to claim 13, characterized in that.

15. The first electrode and the second electrode are located at the same end of the accommodating structure. The heating assembly according to claim 1, characterized in that.

16. The heating assembly according to claim 1, wherein at least one of the heating films is configured such that power densities on both sides of the midpoint in the longitudinal direction of the housing structure are different.

17. The surface of the housing structure is divided into a first region and a second region by a plane perpendicular to the longitudinal direction of the housing structure and passing through the midpoint, and the second region is located on the side of the proximal opening away from the first region. The heating assembly according to claim 16, wherein the power density of at least one of the heating films in the first region is greater than the power density of at least one of the heating films in the second region.

18. An aerosol generating device including a heating assembly and a power supply assembly, wherein the heating assembly is the heating assembly according to any one of claims 1 to 17, and the power supply assembly is electrically connected to the heating assembly and is used to supply power to the heating assembly.

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