Heating assembly and aerosol generating device

Abstract

The invention relates to a heating assembly and an aerosol generating device. The heating assembly comprises a sheet-shaped shell; the heating body is at least partially arranged in the shell, and the heating body comprises a first fold line structure and a second fold line structure; the first fold line structure and the second fold line structure are stacked in a staggered mode in space.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of aerosol generation technology, and in particular to a heating component and an aerosol generating device. Background Art

[0002] An aerosol generating device is a device that can generate aerosol without burning an aerosol product (e.g., cigarettes, cigars, etc.). The device includes a heating component. When the aerosol product is combined with the aerosol generating device, at least a part of the heating component is located inside the aerosol product, so that the heating component can heat the aerosol product inside the aerosol product.

[0003] However, existing heating components often have the following problems:

[0004] 1. The specific surface area of ​​the heating component is small, resulting in low heating efficiency and slow heating of aerosol products; 2. The spiral coil is used for heating, and there is a gap between two adjacent turns of the coil, resulting in uneven heat distribution on the heating component. Summary of the invention

[0005] The embodiments of the present application provide a heating component and an aerosol generating device, which can improve heating efficiency and heating uniformity.

[0006] The present application provides a heating assembly, including:

[0007] a lamellar casing; and

[0008] a heating body, at least partially arranged in the housing, the heating body comprising a first fold line structure and a second fold line structure;

[0009] The first fold line structure and the second fold line structure are stacked and staggered in space.

[0010] The present application provides a heating assembly, including:

[0011] a lamellar casing; and

[0012] a heating body, at least partially arranged in the housing, the heating body comprising a first fold line structure and a second fold line structure;

[0013] The first fold line structure and the second fold line structure are arranged non-axisymmetrically with each other.

[0014] An embodiment of the present application provides an aerosol generating device, comprising the above-mentioned heating component, and also comprising a power supply component for providing power to the heating component.

[0015] The above-mentioned heating component and aerosol generating device, the heating body includes a first fold line structure and a second fold line structure. The fold line structure has a longer heating trajectory than the straight line structure, which is beneficial to improving the heating power of the heating component, and the first fold line structure and the second fold line structure are arranged in a sheet-like shell in a spatially staggered and stacked manner, thereby not only increasing the specific surface area of ​​the heating component, improving the heating efficiency of the heating component and shortening the time for the aerosol generating product to generate the first aerosol, but also helping to evenly distribute the heat on the heating component, which is beneficial to uniform heating of the aerosol generating product and ensuring that the aerosol generating product generates high-quality aerosol. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 is a schematic diagram of an aerosol generating device provided in one embodiment of the present application;

[0018] Figure 2 is a schematic diagram of a heating assembly provided in one embodiment of the present application;

[0019] Figure 3 is a cross-sectional view of a heating assembly provided in one embodiment of the present application;

[0020] Figure 4 is a cross-sectional view of a heating assembly provided in another embodiment of the present application;

[0021] Figure 5 is a schematic diagram of a heating body provided in one embodiment of the present application;

[0022] Figure 6 is a schematic diagram of a heating body provided in another embodiment of the present application;

[0023] Figure 7 is a schematic diagram of a heating body provided in another embodiment of the present application;

[0024] Figure 8 is a schematic diagram of a heating body provided in another embodiment of the present application;

[0025] Fig. 9 is a schematic diagram of a heating body provided in another embodiment of the present application;

[0026] Fig.10 is a schematic diagram of a heating body provided in another embodiment of the present application;

[0027] In the figure:

[0028] 1. Aerosol-generating product; 11. Aerosol-forming substrate;

[0029] 2. Heating assembly; 21. Heating body; 211. First fold line structure; 212. Second fold line structure; 2131. Corner; 2132. Blank area; 2133. First edge; 2134. Second edge;

[0030] 22. housing; 23. filler; 25. wire or conductive element;

[0031] 3. Power supply assembly; 31. Power supply; 32. Control circuit. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or suggesting the quantity or order of the indicated technical features relative to importance or implicitly indicating. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship or movement between the components under a certain specific posture (as shown in the accompanying drawings), and if the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or equipment comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be one or more central elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] Please refer to Figure 1 An embodiment of the present application provides an aerosol generating device, which can be used to heat an aerosol generating product 1, so that the aerosol generating product 1 can generate aerosol for inhalation.

[0037] As used herein, the term "aerosol-generating article" refers to an article comprising an aerosol-forming substrate 11 that, when heated, releases volatile compounds that can form an aerosol. The aerosol-forming substrate may be intended to be heated rather than burned to release volatile compounds that can form an aerosol. The aerosol formed by heating the aerosol-forming substrate 11 may contain fewer components known to be hazardous than an aerosol produced by burning or pyrolytic degradation of the aerosol-forming substrate. In an embodiment, the aerosol-generating article 1 is removably coupled to an aerosol-generating device. The aerosol-generating article 1 may be disposable or reusable.

[0038] The aerosol-forming substrate 11 may be a solid aerosol-forming substrate. Alternatively, the aerosol-forming substrate 11 may include solid and liquid components. The aerosol-forming substrate 11 may include tobacco. The aerosol-forming substrate 11 may include a tobacco-containing material that can release a compound having a tobacco flavor or having nicotine when heated. The aerosol-forming substrate 11 may include a non-tobacco material. The aerosol-forming substrate 11 may include a tobacco-containing material and a non-tobacco material.

[0039] The outer diameter of the aerosol-generating article 1 may be between about 5 mm and about 12 mm, for example between about 5.5 mm and about 8 mm. In an embodiment, the outer diameter of the aerosol-generating article 1 is 6 mm + / - 10%.

[0040] The total length of the aerosol-generating article 1 may be between about 25 mm and about 100 mm. The total length of the aerosol-generating article 1 may be between about 30 mm and about 100 mm. In one embodiment, the total length of the aerosol-forming substrate 11 accounts for about 1 / 2 of the total length of the aerosol-generating article 1. In another embodiment, the total length of the aerosol-generating article 1 is about 45 mm. In yet another embodiment, the total length of the aerosol-forming substrate 11 is about 33 mm.

[0041] As used herein, the term "aerosol generating device" is a device that engages or interacts with an aerosol generating article 1 to form an inhalable aerosol. The aerosol generating device may be an electrically operated aerosol generating device, which is a device that includes one or more components for supplying energy from, for example, a power supply component 3 to heat an aerosol-forming substrate 11 to generate an aerosol. The aerosol generating device is a device that includes a heating component 2 that is capable of drawing electricity from a power supply component 3 to generate heat.

[0042] Please refer to Figure 1 The power supply assembly 3 may include any suitable power supply 31, such as a DC source, such as a battery. In one embodiment, the power supply 31 is a lithium-ion battery. Alternatively, the power supply 31 may be a nickel metal hydride battery, a nickel cadmium battery, or a lithium-based battery, such as a lithium cobalt, lithium iron phosphate, lithium titanate, or a lithium polymer battery. The power supply assembly 3 may also include a control circuit 32, which is capable of controlling the output of the power supply, such as causing the power supply 31 to output an alternating current or a direct current, or causing the power supply 31 to output a current or a voltage in the form of pulses.

[0043] The control circuit 32 may have one or more controllers, which can protect the power supply 31 or control the power output of the power supply 31. The controller can control the overall operation of the aerosol generating device. In detail, the controller not only controls the operation of the power supply and the heating component, but also controls the operation of other components in the aerosol generating device. In addition, the controller can determine whether the aerosol generating device can be operated by checking the status of the components of the aerosol generating device. The controller includes at least one microprocessor or microcontroller. The microprocessor or microcontroller may include a logic gate array, or may include a combination of a general-purpose microprocessor and a memory storing executable programs in the microprocessor.

[0044] The heating assembly 2 may constitute part of the aerosol generating device; or the heating assembly 2 may constitute part of the aerosol generating article 1; or part of the heating assembly 2 may constitute part of the aerosol generating device and part of the aerosol generating article 1. Figure 1 In the embodiment shown, the heating assembly 2 forms part of an aerosol generating device.

[0045] In an embodiment of the present application, the heating component 2 includes an internal heating component. As used herein, the term "internal heating component" refers to a heating component that is at least partially positioned inside the aerosol generating article 1 when the aerosol generating article 1 is combined with an aerosol generating device.

[0046] Please refer to Figure 2-Figure 4The heating assembly 2 includes a housing 22 and a heating body 21. At least a portion of the heating body 21 may be made of metal, or at least a portion of the heating body 21 may be formed of a resistive coating or an infrared coating. At least a portion of the heating body 21 is arranged inside the housing 22, so that the housing 22 can contact the aerosol generating article 1 instead of the heating body 21. The housing 22 is used to support and hold the heating body 21 to prevent the heating body 21 from being deformed, worn, or stained with oil during insertion into the aerosol generating article 1.

[0047] The heating body 21 may include a susceptor that can generate heat in a changing magnetic field. When used herein, the term "susceptor" refers to a material that can convert electromagnetic energy into heat. When located in a changing electromagnetic field, the eddy current induced in the susceptor causes the heating of the susceptor. In such embodiments, the susceptor is designed to engage with an aerosol generating device including a magnetic field generator. The magnetic field generator generates a changing magnetic field to heat the susceptor located in the changing magnetic field. When in use, the susceptor is located in a changing magnetic field generated by the magnetic field generator. Among them, the magnetic field generator is electrically connected to the power supply component 3, and the power supply component 3 provides the magnetic field generator with a current that generates a changing magnetic field. The magnetic field generator may include one or more induction coils that generate a changing magnetic field, and the one or more induction coils may surround the susceptor. In one embodiment, the aerosol generating device is capable of generating a changing magnetic field between 1 and 30 MHz, for example, between 2 and 10 MHz, for example, between 5 and 7 MHz. In an embodiment, the aerosol generating device is capable of generating a varying magnetic field having a field strength (H field) between 1 and 5 kA / m, such as between 2 and 3 kA / m, such as about 2.5 kA / m.

[0048] Wherein, the susceptor may include metal or carbon. In one embodiment, the susceptor may include a ferromagnetic material, such as ferrite, ferromagnetic steel, or stainless steel. In one embodiment, the susceptor includes a nickel-iron alloy. In one embodiment, the susceptor includes 400 series stainless steel, which includes 410 grade, 420 grade, or 430 grade stainless steel. Different materials will dissipate different amounts of energy when positioned in an electromagnetic field with similar frequency and field strength values. Therefore, the parameters of the susceptor, such as material type, length, width, and thickness, can all be varied to provide the desired power dissipation within a known electromagnetic field.

[0049] The heating body 21 may include a resistive material capable of generating Joule heat when conducting electricity. Suitable resistive materials include, but are not limited to, semiconductors such as doped ceramics, conductive ceramics (e.g., molybdenum disilicide), carbon, graphite, metals, metal alloys, and composite materials made of ceramic materials and metal materials. Such composite materials may include doped or undoped ceramics. Examples of suitable doped ceramics include doped silicon carbide. Examples of suitable metals include titanium, zirconium, tantalum, and platinum group metals. Examples of suitable metal alloys include stainless steel, Constantan, nickel-containing alloys, cobalt-containing alloys, chromium-containing alloys, aluminum-containing alloys, titanium-containing alloys, zirconium-containing alloys, hafnium-containing alloys, niobium-containing alloys, molybdenum-containing alloys, tantalum-containing alloys, tungsten-containing alloys, tin-containing alloys, gallium-containing alloys, manganese-containing alloys, and iron-containing alloys, as well as superalloys based on nickel, iron, and cobalt, stainless steel, iron-aluminum-based alloys, and iron-manganese-aluminum-based alloys.

[0050] The heating body 21 includes an infrared electric heating coating coated on the inside of the shell. The infrared electric heating coating can generate heat energy when powered on, and then generate infrared rays of a certain longitudinal length, for example: far infrared rays of 1.5μm to 400μm. The infrared electric heating coating can be optionally made of far-infrared electric heating ink, ceramic powder and inorganic adhesive, which are fully mixed and evenly coated on the outer surface of the substrate, and then dried and cured for a certain period of time. The thickness of the infrared electric heating coating is 30μm-50μm; of course, the infrared electric heating coating can also be made of tin tetrachloride, tin oxide, antimony trichloride, titanium tetrachloride and anhydrous copper sulfate mixed and stirred in a certain proportion and then coated on the outer surface of the substrate; or a silicon carbide ceramic layer, a carbon fiber composite layer, a zirconium-titanium oxide ceramic layer, a zirconium-titanium nitride ceramic layer. The infrared electric heating coating can also be other existing material coatings. In this embodiment, the shell can be made of a light-transmitting material to allow infrared rays to pass through.

[0051] Please refer to Figure 5-10The heater 21 includes a first fold line structure 211 and a second fold line structure 212 that are electrically connected to each other, and the first fold line structure 211 and the second fold line structure 212 are connected in series. The first fold line structure 211 and the second fold line structure 212 each include at least one constituent unit, and the constituent unit has a corner 2131, that is, the first fold line structure 211 and the second fold line structure 212 each have at least one corner 2131, and the distance of the current flowing through the first fold line structure 211 and the second fold line structure 212 is extended by the corner 2131, so that the overall resistance value of the heater 21 can be increased, which helps to improve the heating efficiency of the heater 21. In one example, the resistance of the heater 21 is between 0.4Ω and 3Ω.

[0052] The constituent unit may include an edge forming a corner 2131. For example: please refer to Figure 5 The constituent unit may include a first edge 2133 and a second edge 2134 intersecting at a corner 2131, where one end of the first edge 2133 and one end of the second edge 2134 intersect, and the intersection forms a corner 2131 of the constituent unit. The corner 2131 may be as follows Figure 5-10 The first edge 2133 and the second edge 2134 may be as shown in FIG. Figure 5-10 The straight edges shown, or one end of the first edge 2133 and the second edge 2134 may be curved edges.

[0053] In one example, refer to Figure 5-10 , the corner 2131 is an angular corner, and the first edge 2133 and the second edge 2134 are straight edges, then the constituent unit is roughly "V" shaped, and when multiple "V" shaped constituent units are arranged continuously, they can form one or more "Z" shapes, "N" shapes, "M" shapes or "W" shapes, etc., wherein the "V" shape belongs to a constituent part of a "Z" shape, "N" shape, "M" shape or "W" shape, etc., that is, when there are multiple continuously arranged "V" shaped constituent units on the first fold line structure 211 and / or the second fold line structure 212, at least a part of the first fold line structure 211 and / or the second fold line structure 212 can be constructed into a roughly sawtooth waveform.

[0054] In one example, the corner is a rounded corner, and the first edge and the second edge are arc edges, then the constituent unit is roughly "C" shaped, then when multiple "C" shaped constituent units are arranged continuously, they can form one or more "S" shapes or serpentine shapes, etc., wherein the "C" shape belongs to the constituent part of the "S" shape, serpentine shape, etc., that is, when there are multiple continuously arranged "C" shaped constituent units on the first fold line structure and / or the second fold line structure, at least part of the first fold line structure and / or the second fold line structure can be constructed into a roughly sine waveform or cosine waveform.

[0055] Alternatively, the building block can be configured to be generally in an "L" shape, having two corners, and the two corners can have the same angle θ. Therefore, a plurality of consecutive building blocks can be arranged into a generally rectangular wave or trapezoidal wave, etc. When the building block is generally in an "L" shape, the building block includes a first edge 2133 and a second edge 2134 which are oppositely arranged, and further includes a third edge connecting the first edge 2133 and the second edge 2134. The first edge 2133 and the second edge 2134 can be parallel to each other, or the extension lines of the first edge 2133 and the second edge 2134 can intersect. One of the two corners 2131 of the "L" - shaped building block is between the third edge and the first edge 2133, and the other of the two corners 2131 of the "L" - shaped building block is between the third edge and the second edge 2134.

[0056] It should be noted that the first folded - line structure 211 and the second folded - line structure 212 both include at least one building block having a corner 2131, which means that the first folded - line structure 211 and the second folded - line structure 212 are non - straight structures, and there is at least one corner 2131 on the first folded - line structure 211 and the second folded - line structure 212. The angle θ of the corner 2131 can be the central angle corresponding to a rounded - corner type corner, or the angle θ of the corner 2131 can be the included angle between the first edge 2133 and the second edge 2134.

[0057] The angle θ of the corner 2131 satisfies: 0° < θ < 180°; preferably, 0° < θ < 90°, so as to increase the heat density at the corner 2131 of the heating element 21; more specifically, θ can be approximately 17°.

[0058] Of course, the angles θ of different corners 2131 can be different. For example, the first folded - line structure 211 has at least two building blocks, and the angles θ of the corners 2131 of at least two building blocks on the first folded - line structure 211 are different, so that there can be at least two regions with different heat densities on the first folded - line structure 211. For example, the angle θ of at least one building - block corner 2131 on the first folded - line structure 211 is different from the angle θ of at least one building - block corner 2131 on the second folded - line structure 212, so that there can be at least two regions with different heat densities on the heating element 21. In an example, the heat densities at the relative two ends (upper and lower ends) of the heating element 21 in the longitudinal direction of the heating assembly 2 are less than the heat density in the middle region of the heating element 21.

[0059] Furthermore, according to heating requirements, the angle θ of the corner 2131 of the constituent unit and the density of the arrangement of the constituent units can be set to control the heat density of the heating body 21, so as to increase the heat density of at least a local area of ​​the heating component 2, or reduce the heat density of at least a local area of ​​the heating component 2, or make at least two areas on the heating component 2 have different heat densities.

[0060] Alternatively, the heating component 2 may have a more uniform heat distribution by reasonably setting the angle θ of the corner 2131 of the constituent unit and the density or sparseness of the arrangement of the constituent units according to heating requirements.

[0061] The structure of the constituent unit is such that the constituent unit has a blank area 2131 arranged opposite to the corner 2131 of the constituent unit, and the edge of the constituent unit defines at least a partial boundary of the blank area 2131 of the constituent unit. In one embodiment, the blank area 2132 of the constituent unit is at least a partial area located between the first edge 2133 and the second edge 2134 of the constituent unit, and the corner 2131 of the constituent unit is the connection or transition of the first edge 2133 and the second edge 2134 of the constituent unit. In one embodiment, at least a partial boundary of the blank area 2132 of the constituent unit can be defined by the first edge 2133 and the second edge 2134 of the constituent unit. In one embodiment, at least a partial boundary of the blank area 2132 of the constituent unit can be defined by the first edge 2133, the second edge 2134 and the third edge of the constituent unit. In one embodiment, the blank area 2132 of the constituent unit can be arranged adjacent to the constituent unit.

[0062] In one embodiment, the number of constituent units on the first fold line structure 211 is the same as the number of constituent units on the second fold line structure 212. In one embodiment, the resistance value of the first fold line structure 211 is equal to or similar to the resistance value of the second fold line structure 212. In one embodiment, the heating body 21 can generate Joule heat or emit infrared rays when powered on, and the distance of the current flowing through the first fold line structure 211 is approximately equal to the distance of the current flowing through the second fold line structure 212.

[0063] In one embodiment, there are multiple constituent units on the first fold line structure 211, and the multiple constituent units on the first fold line structure 211 are the same, that is, the corners 2131 of the multiple constituent units on the first fold line structure 211 have the same angle θ, the first edges 2133 of the multiple constituent units on the first fold line structure 211 have the same extension length, the second edges 2134 of the multiple constituent units on the first fold line structure 211 have the same extension length, the first edges 2133 of the multiple constituent units on the first fold line structure 211 have the same line width, and the second edges 2134 of the multiple constituent units on the first fold line structure 211 have the same line width.

[0064] In one embodiment, there are multiple constituent units on the second fold line structure 212, and the multiple constituent units on the second fold line structure 212 are the same.

[0065] In one embodiment, the constituent units on the first fold line structure 211 are the same as the constituent units on the second fold line structure 212. That is, the first fold line structure 211 has one or more constituent units, and when there are multiple constituent units on the first fold line structure 211, the multiple constituent units on the first fold line structure 211 are the same, and the second fold line structure 212 has one or more constituent units, and when there are multiple constituent units on the second fold line structure 212, the multiple constituent units on the second fold line structure 212 are the same, and at the same time, any constituent unit on the first fold line structure 211 is the same as any constituent unit on the second fold line structure 212.

[0066] The plurality of constituent units on the first fold line structure 211 and / or the second fold line structure 212 may be arranged continuously or at intervals. The constituent units on the first fold line structure 211 and the second fold line structure 212 may have the same arrangement density.

[0067] In one embodiment, the first fold line structure 211 and the second fold line structure 212 are spatially stacked, that is, the first fold line structure 211 and the second fold line structure 212 are superimposed on the heating component 2 or in the thickness direction of the shell 22 to increase the heat density per unit area of ​​the heating component 2 and improve the heating efficiency of the heating component 2.

[0068] Without considering the interaction between the first fold line structure 211 and the second fold line structure 212, with respect to the first fold line structure 211 or the second fold line structure 212 alone, because the edge in the constituent unit can autonomously generate heat when energized, and the blank area 2132 in the constituent unit cannot autonomously generate heat, the heat density of the blank area 2132 in the constituent unit on the first fold line structure 211 or the second fold line structure 212 will usually be lower than the heat density of the corner 2131 in the constituent unit.

[0069] Based on this, in order to make the heat distribution in at least a local area of ​​the heating body 21 uniform, the first fold line structure 211 and the second fold line structure 212 can be stacked in a spatially staggered manner.

[0070] In one example, at least part of the blank area 2132 on the first fold line structure 211 is stacked with at least part of the corner 2131 on the second fold line structure 212, so that at least part of the corner 2131 on the second fold line structure 212 can compensate for the heat density of at least part of the blank area 2132 on the first fold line structure 211, so that the blank area 2132 has substantially the same heat density as the corner 2131 stacked therewith, which helps to improve the uniformity of heat distribution on the heating body 21, thereby improving the uniformity of heating of the heating body 21. At the same time, at least part of the corner 2131 on the first fold line structure 211 can be stacked with at least part of the blank area 2132 on the second fold line structure 212 to compensate for the heat density of at least part of the blank area 2132 on the second fold line structure 212, so that the blank area 2132 has substantially the same heat density as the corner 2131 stacked therewith, thereby improving the heating uniformity of the heating body 21.

[0071] For example, see Fig. 9 and Fig.10 , the first fold line structure 211 and the second fold line structure 212 are spatially stacked, but the corner 2131 on the first fold line structure 211 is not stacked with the corner 2131 of the second fold line structure 212. Alternatively, the first fold line structure 211 and the second fold line structure 212 are spatially stacked, but the corner 2131 on the first fold line structure 211 is misaligned with the corner 2131 of the second fold line structure 212. Avoiding the stacking of the corner 2131 on the first fold line structure 211 and the corner 2131 of the second fold line structure 212 prevents the temperature distribution gradient on the heating body 21 from increasing, which is conducive to increasing the uniformity of heat distribution on the heating body 21.

[0072] For example, see Fig. 9 and Fig.10 The first fold line structure 211 and the second fold line structure 212 are stacked in space, and the blank area 2132 on the first fold line structure 211 and the blank area 2132 of the second fold line structure 212 are staggered to avoid stacking of the blank area 2132 on the first fold line structure 211 and the blank area 2132 of the second fold line structure 212 to prevent an increase in the temperature distribution gradient on the heating body 21, which is beneficial to increase the uniformity of heat distribution on the heating body 21.

[0073] The first fold line structure 211 and the second fold line structure 212 can be stacked in a staggered manner in space. Fig. 9 and Fig.10As shown, the first fold line structure 211 and the second fold line structure 212 are stacked in space, and the first fold line structure 211 and the second fold line structure 212 are electrically connected at the upper end of the heating body 21. From top to bottom, at least a partial blank area 2132 of the first constituent unit on the first fold line structure 211 is not stacked with the second fold line structure 212, or the corner 2131 of the last constituent unit on the second fold line structure 212 is not stacked with the first fold line structure 211.

[0074] It should be noted that the electrical connection between the first fold line structure 211 and the second fold line structure 212 is optional but not mandatory. In some embodiments, the first fold line structure 211 and the second fold line structure 212 may be separated by an insulating layer.

[0075] You can refer to Fig. 9 and Fig.10 The first fold line structure 211 and the second fold line structure 212 are stacked in space. From top to bottom, at least a partial blank area 2132 of the first constituent unit on the first fold line structure 211 is not stacked with the second fold line structure 212, or the blank area 2132 of the first constituent unit on the first fold line structure 211 is stacked with the blank area 2132 of the first constituent unit on the second fold line structure 212, so that the heat density of the area of ​​the heating body 21 corresponding to the first constituent unit on the first fold line structure 211 is relatively small.

[0076] In one embodiment in which the first fold line structure 211 and the second fold line structure 212 are spatially stacked, the middle region of the heating body 21 may be spaced apart from the upper end of the heating body 21 by one or more constituent units on the first fold line structure 211, and the middle region of the heating body 21 may be spaced apart from the lower end of the heating body 21 by one or more constituent units on the second fold line structure 212. In the middle region of the heating body 21, the blank regions 2132 on the first fold line structure 211 may be stacked together with the corners 2131 on the second fold line structure 212, or the corners 2131 on the first fold line structure 211 may be stacked together with the blank regions 2132 on the second fold line structure 212. The heat density in the middle region of the heating body 21 may be greater than the heat density at the upper and lower ends of the heating body 21.

[0077] In one embodiment, the first fold line structure 211 and the second fold line structure 212 are stacked in space, the constituent units on the first fold line structure 211 are the same as the constituent units on the second fold line structure 212, the number of constituent units on the first fold line structure 211 and the number of constituent units on the second fold line structure 212 are the same, and the constituent units in the corresponding areas of the first fold line structure 211 and the second fold line structure 212 are arranged in the same density or sparseness, but at least some of the constituent units on the first fold line structure 211 and at least some of the constituent units on the second fold line structure 212 are staggered with each other.

[0078] Specifically, at least some of the constituent units on the first fold line structure 211 and at least some of the constituent units on the second fold line structure 212 may be offset from each other. The longitudinal length of the constituent units is such that the blank area 2132 of at least some constituent units on the first fold line structure 211 is overlapped with the corner 2131 of at least some constituent units on the second fold line structure 212, or there is no constituent unit on the second fold line structure 212 that is overlapped with at least some constituent units on the first fold line structure 211. Wherein n is a positive integer.

[0079] In one embodiment, reference may be made to Figure 5-10 , the first fold line structure 211 and the second fold line structure 212 are stacked in space, but the first fold line structure 211 and the second fold line structure 212 are non-axisymmetrically arranged when they are laid flat on each other or stacked on each other, that is, after folding the heating body 21, the first fold line structure 211 and the second fold line structure 212 cannot completely overlap; or, when the first fold line structure 211 and the second fold line structure 212 are stacked in space, the edges of the first fold line structure 211 and the second fold line structure 212 are not completely aligned with the edges, and the blank areas 2132 of the first fold line structure 211 and the second fold line structure 212 are not completely aligned with the blank areas 2132.

[0080] For example, in one embodiment where the first fold line structure 211 and the second fold line structure 212 are stacked in space, the constituent units on the first fold line structure 211 are different from the constituent units on the second fold line structure 212, or the number of constituent units on the first fold line structure 211 is different from the number of constituent units on the second fold line structure 212, or the arrangement density or sparseness of constituent units in the corresponding areas of the first fold line structure 211 and the second fold line structure 212 is different, so that at least a portion of the blank area 2132 on the first fold line structure 211 and at least a portion of the corner 2131 on the second fold line structure 212 are stacked, or at least a portion of the first fold line structure 211 and the second fold line structure 212 are misaligned with each other.

[0081] For example, one of the blank areas 2132 on the first broken-line structure 211 can be stacked with a plurality of corners 2131 on the second broken-line structure 212 at the same time. The third edge between the first edge 2133 and the second edge 2134 of one of the constituent units on the second broken-line structure 212 or one of the corners 2131 on the second broken-line structure 212 can be stacked with a plurality of blank areas 2132 on the first broken-line structure 211 at the same time; for example, one of the constituent units on the second broken-line structure 212 is generally in an "L" shape, and the third edge in this constituent unit has a relatively large longitudinal length, so that the third edge can be stacked with a plurality of blank areas 2132 on the first broken-line structure 211 at the same time.

[0082] In an embodiment where the first broken-line structure 211 and the second broken-line structure 212 are stacked in space, the first broken-line structure 211 and the second broken-line structure 212 are an integral structure formed by etching or stamping a metal sheet, and this integral structure can be as shown in 5 or Figure 6 as shown, or the first broken-line structure 211 and the second broken-line structure 212 are an integral structure formed by folding a metal strip back and forth, and this integral structure can be as shown in 7 or Figure 8 as shown. In an example, the first broken-line structure 211 and the second broken-line structure 212 can be first formed into a flat integral structure, and then the flat heating body 21 is folded in half so that the first broken-line structure 211 and the second broken-line structure 212 are stacked in space. In this embodiment, when the heating body 21 is flat, the first broken-line structure 211 and the second broken-line structure 212 are non-axisymmetrically arranged with respect to each other.

[0083] That is, the number of constituent units on the first fold line structure 211 can be different from the number of constituent units on the second fold line structure 212; or, the density of the arrangement of the constituent units on the first fold line structure 211 can be different from the density of the arrangement of the constituent units on the second fold line structure; or, at least one constituent unit on the first fold line structure 211 can be different from at least one constituent unit on the second fold line structure 212; or, at least one constituent unit on the first fold line structure 211 can be staggered with at least one constituent unit on the second fold line structure 212; or other situations can be used, so that when the heating body 21 is laid flat, the first fold line structure 211 and the second fold line structure 212 are arranged in a non-axisymmetric manner. In this way, the first fold line structure 211 and the second fold line structure 212 can be set to adjust the heating efficiency and heat distribution density of the heating body 21, or after the first fold line structure 211 and the second fold line structure 212 are stacked, the heating body 21 can have multiple areas with different heat density or heating efficiency; for example, in a local area of ​​the heating body 21, the blank area 2132 on the first fold line structure 211 and the blank area 2132 on the second fold line structure 212 are spatially stacked, and in another area of ​​the heating body 21, the blank area 2132 on the first fold line structure 211 and the corner 2131 on the second fold line structure 212 are spatially stacked; for example, the local area of ​​the heating body 21 can have a greater heating efficiency or heat density, so that the local area of ​​the aerosol generating product 1 can have a higher heating efficiency, which helps to speed up the production rate of the first inhalation aerosol and shorten the time the user waits for the first inhalation aerosol.

[0084] In one embodiment in which the first fold line structure 211 and the second fold line structure 212 are stacked in space, the first fold line structure 211 and the second fold line structure 212 are formed separately and then welded to each other. Based on this, at least one of the first fold line structure 211 and the second fold line structure 212 can be formed by etching or stamping a metal sheet, or at least one of the first fold line structure and the second fold line structure can be formed by folding a metal strip back and forth. Therefore, the first fold line structure 211 and the second fold line structure 212 can be stacked in space first, and then one end of the first fold line structure 211 and the second fold line structure 212 can be welded. Of course, the first fold line structure 211 and the second fold line structure 212 can also be laid flat first, and then the first fold line structure 211 and the second fold line structure 212 can be welded, and finally the laid flat heating body 21 can be folded in half to stack the first fold line structure 211 and the second fold line structure 212 in space. Before welding the first fold line structure 211 and the second fold line structure 212 , the first fold line structure 211 and the second fold line structure 212 may be arranged in a non-axisymmetric manner with respect to each other.

[0085] In one embodiment, the first fold line structure 211 and the second fold line structure 212 are arranged flat, and the first fold line structure 211 and the second fold line structure 212 can be in the same spatial plane.

[0086] For example, see Figure 5-Figure 8 , the first fold line structure 211 and the second fold line structure 212 are arranged in parallel with each other while being connected in series. The first fold line structure 211 and the second fold line structure 212 are arranged in parallel, which means that the central axis of the first fold line structure 211 and the central axis of the second fold line structure 212 are parallel to each other and are not on the same straight line; or, the first fold line structure 211 and the second fold line structure 212 are arranged in parallel, which means that the heating body 21 is roughly in the shape of "∩", and at least part of the first fold line structure 211 and at least part of the second fold line structure 212 are two opposite sides of the "∩" shape, but the first fold line structure 211 and the second fold line structure 212 are opposite to each other, which does not mean that the first fold line structure 211 and the second fold line structure 212 are necessarily axially symmetrical or mirror images of each other, nor does it mean that after the heating body 21 is folded in half, the first fold line structure 211 and the second fold line structure 212 can be completely overlapped.

[0087] In an embodiment in which the first fold line structure 211 and the second fold line structure 212 are arranged flat, at least part of the blank area 2132 on the first fold line structure 211 corresponds to at least part of the corner 2131 on the second fold line structure 212. With such a design, compared with making the blank area 2132 of the constituent unit on the first fold line structure 211 correspond to the blank area 2132 of the constituent unit on the second fold line structure 212, making the blank area 2132 of at least part of the constituent unit on the first fold line structure 211 correspond to the corner 2131 of at least part of the constituent unit on the second fold line structure 212 can make the heat distribution on the heating body 21 more uniform and increase the heat density on the heating body 21, which is conducive to uniform heating of at least a local area of ​​the aerosol generating product 1 and enabling the aerosol generating product 1 to generate aerosol more quickly, and helps to improve the generation efficiency of the first aerosol.

[0088] In an embodiment where the first fold line structure 211 and the second fold line structure 212 are arranged in a flat manner, please refer to Figure 5-Figure 8 The first fold line structure 211 and the second fold line structure 212 are electrically connected at the upper end of the heating body 21. From top to bottom, the first constituent unit on the first fold line structure 211 is closer to the upper end of the heating body 21 than the first constituent unit on the second fold line structure 212. For example, the first fold line structure 211 and the second fold line structure 212 are misaligned (for example, misaligned The longitudinal length of each constituent unit) makes the first fold line structure 211 and the second fold line structure 212 non-axisymmetrically arranged with respect to each other, and at the same time makes the heat density at the upper end of the heating body 21 less than the heat density in the middle area of ​​the heating body 21.

[0089] In such Figure 5-Figure 8 In the illustrated embodiment, the first fold line structure 211 and the second fold line structure 212 are not axisymmetric with respect to each other.

[0090] For example, the first fold line structure 211 and the second fold line structure 212 have the same constituent units, the same number of constituent units, and the same arrangement density or density of the constituent units, but the first fold line structure 211 and the second fold line structure 212 are arranged in a staggered and tiled manner, for example, the first fold line structure 211 and the second fold line structure 212 are staggered. The longitudinal length of each constituent unit, n is a positive integer, so that, from top to bottom, the blank area 2132 on the first constituent unit on the first fold line structure 211 facing the second fold line structure 212 does not correspond to the corner 2131 of the constituent unit on the second fold line structure 212, or, the blank area 2132 of the first constituent unit on the first fold line structure 211 facing the second fold line structure 212 is located above the first constituent unit on the second fold line structure 212, so that the first fold line structure 211 and the second fold line structure 212 are non-axisymmetrically arranged with respect to each other, and at the same time, the heat density at the upper end of the heating body 21 is less than the heat density in the middle area of ​​the heating body 21. The corner 2131 of the last constituent unit on the second fold line structure 212 may be located below the last constituent unit on the first fold line structure 211, and one of the edges of the last constituent unit on the second fold line structure 212 may not correspond to the first fold line structure 211, so that the first fold line structure 211 and the second fold line structure 212 are non-axisymmetrically arranged with respect to each other, and at the same time, the heat density at the lower end of the heating body 21 is less than the heat density in the middle area of ​​the heating body 21.

[0091] Since the aerosol generated by the aerosol-forming matrix 11 must pass through the upper end of the aerosol-forming matrix 11 before being inhaled by the user, and the aerosol passing through the upper end of the aerosol-forming matrix 11 has a higher temperature, the problem of burning the mouth due to the aerosol passing through the upper end of the aerosol-forming matrix 11 being too high can be prevented by reducing the heat density at the upper end of the heating body 21.

[0092] The oil in the aerosol-forming matrix 11 will seep out at high temperatures. The oil at the lower end of the aerosol-forming matrix 11 can be prevented from leaking through the bottom of the aerosol-generating product 1 by reducing the heat density at the lower end of the heating body 21 .

[0093] Alternatively, when the first fold line structure 211 and the second fold line structure 212 are arranged flat, at least one constituent unit on the first fold line structure 211 is different from at least one constituent unit on the second fold line structure 212, or the number of constituent units on the first fold line structure 211 is different from the number of constituent units on the second fold line structure 212, or the density of arrangement of the constituent units on the first fold line structure 211 and the second fold line structure 212 is different, so that the first fold line structure 211 and the second fold line structure 212 are arranged non-axisymmetrically with each other.

[0094] The heating body 21 may also include a pin portion, which may be electrically connected to the power supply assembly 3 through a wire or a conductive element. When the heating body 21 is able to generate Joule heat or emit infrared rays when powered on, the heating body 21 may draw electricity from the pin portion to generate heat. When the heating body 21 includes a thermosensitive material, for example, when the heating body 21 includes a thermistor, the processor on the power supply assembly 3 may detect the resistance of the thermosensitive material through a wire or a conductive element 25 electrically connected to the pin portion, and then the processor obtains temperature information on the thermosensitive material based on the temperature coefficient of the thermosensitive material, and then the control circuit 32 on the power supply assembly 3 may control the power, current, voltage or pulse frequency output by the power supply 31 to the heating assembly 2 based on the temperature information.

[0095] The total resistance of the pin portion is less than 25% of the resistance of the heater 21. More specifically, the resistance of the pin portion can be less than 10% of the resistance of the heater 21, so as to reduce the electrical loss caused by the pin portion and increase the effective power of the heater 21. When the pin portion is located at the lower end of the heater 21, the lower end of the heater 1 can have a smaller heat density.

[0096] In one embodiment, the pin portion includes a first pin electrically connecting the power supply component to the first fold line structure and a second pin electrically connecting the power supply component to the second fold line structure, and the first fold line structure and the second fold line structure are electrically connected to each other. In this embodiment, the pin portion and the first fold line structure and the second fold line structure can be made of different materials. For example, the pin portion can be made of materials with low resistivity such as copper, silver or gold. For example, the first fold line structure and the second fold line structure can be made of thermosensitive materials such as 316L series stainless steel, 304 series stainless steel or nickel, or materials with high TCR characteristics, or the first fold line structure and the second fold line structure can be made of high resistivity materials such as iron-chromium-aluminum or nickel-chromium, and the pin portion can be mainly made of high conductivity materials such as nickel, nickel-plated silver, copper, copper-plated silver, and pure silver.

[0097] In one embodiment, please refer to Figure 5-10One end of the first fold line structure 211 and one end of the second fold line structure 212 are electrically connected to each other, and the other end of the first fold line structure 211 and the other end of the second fold line structure 212 are respectively the free end of the first fold line structure 211 and the free end of the second fold line structure 212. The free ends of the first fold line structure 211 and the second fold line structure 212 can each constitute a pin, and the two pins can be electrically connected to the power supply assembly 3 through different wires or conductive elements 25.

[0098] In this embodiment, the first fold line structure 21 and its pins can be integrally formed or can be made of the same material; the second fold line structure 212 and its pins can be integrally formed or can be made of the same material.

[0099] In this embodiment, reference can be made to Figure 5 , Figure 7 and Figure 8 , the pins of the first fold line structure 211 may be formed by at least a partial lower edge of the last constituent unit on the first fold line structure 211, and the pins of the second fold line structure 212 may be formed by at least a partial lower edge of the last constituent unit on the second fold line structure 212. Therefore, the line width of the pins of the first fold line structure 211 may be equal to the line width W11 of the constituent unit on the first fold line structure 211, and the line width of the pins of the second fold line structure 212 may be equal to the line width W12 of the constituent unit on the second fold line structure 212, wherein the line width W1 of the constituent unit is the width of the edge of the constituent unit. The line width of the pins of the first fold line structure 211 may be equal to the line width of the pins of the second fold line structure 212, that is, W11 may be equal to W12, and the line width W1 of the constituent unit may be equal to the line widths W11 and W12 of the constituent units.

[0100] Alternatively, you can refer to Figure 5 , the pin of the first fold line structure 211 can be extended from the lower edge of the last constituent unit on the first fold line structure 211, so that the line width W21 of the pin of the first fold line structure 211 can be greater than the line width W11 of the constituent unit on the first fold line structure 211; the pin of the second fold line structure 212 can be extended from the lower edge of the last constituent unit on the second fold line structure 212, so that the line width W22 of the pin of the second fold line structure 212 can be greater than the line width W12 of the constituent unit on the second fold line structure. By increasing the line width of the pin, the conductive resistance of the pin is reduced.

[0101] Or, alternatively, the first fold line structure and the second fold line structure are connected in parallel between the two pins.

[0102] In one embodiment, the first fold line structure 211 and the second fold line structure 212 have a smaller thickness, so as to increase the resistance of the first fold line structure 211 and the second fold line structure 212 by reducing the thickness of the first fold line structure 211 and the second fold line structure 212. The direction in which the current flows through the first fold line structure 211 and the second fold line structure 212 is perpendicular to the thickness direction of the first fold line structure 211 and the second fold line structure 212.

[0103] Specifically, when the first fold line structure 211 and the second fold line structure 212 in the heating body 21 are flat, Figure 5 and Figure 6 In the embodiment shown, the thickness of the metal sheet forming the first fold line structure 211 and the second fold line structure 212 may be between 0.05 mm and 0.1 mm, so that the thickness of the first fold line structure 211 and the second fold line structure 212 may be between 0.05 mm and 0.1 mm, or the thickness of the heating body 21 may be between 0.05 mm and 0.1 mm. More specifically, the thickness of the first fold line structure 211 and the second fold line structure 212 may be both approximately 0.08 mm. Figure 7 and Figure 8 In the illustrated embodiment, the thickness of the metal strip forming the first fold line structure 211 and the second fold line structure 212 may be between 0.05 mm and 0.1 mm, so that the thickness of the first fold line structure 211 and the second fold line structure 212 may be between 0.1 mm and 0.2 mm, or the thickness of the heating body 21 may be between 0.1 mm and 0.2 mm.

[0104] When the first fold line structure 211 and the second fold line structure 212 in the heating body 21 are stacked in space, Fig. 9 and Fig.10 In the illustrated embodiment, the thickness of the metal sheet forming the first fold line structure 211 and the second fold line structure 212 may be between 0.05 mm and 0.1 mm, so that the thickness of the first fold line structure 211 and the second fold line structure 212 may be between 0.05 mm and 0.1 mm, and the thickness of the heating body 21 may be between 0.1 mm and 0.2 mm. More specifically, the thickness of the first fold line structure 211 and the second fold line structure 212 may both be about 0.08 mm. Alternatively, the thickness of the metal strip forming the first fold line structure 211 and the second fold line structure 212 may be between 0.05 mm and 0.1 mm, so that the thickness of the first fold line structure 211 and the second fold line structure 212 may be between 0.1 mm and 0.2 mm, and the thickness of the heating body 21 may be between 0.2 mm and 0.4 mm.

[0105] In one embodiment, the first fold line structure 211 and the second fold line structure 212 have a smaller line width W1, so as to increase the resistance of the first fold line structure 211 and the second fold line structure 212 by reducing the line width W1 of the first fold line structure 211 and the second fold line structure 212. The direction in which the current flows through the first fold line structure 211 and the second fold line structure 212 is perpendicular to the direction of the line width W1 of the first fold line structure 211 and the second fold line structure 212.

[0106] Specifically, the line width W11 of the first fold line structure 211 may be between 0.03 mm and 1 mm, or the line width W11 of the constituent unit on the first fold line structure 211 may be between 0.03 mm and 1 mm. In one embodiment, the line width W12 of the second fold line structure 212 may be between 0.03 mm and 1 mm, or the line width W12 of the constituent unit on the second fold line structure 212 may be between 0.03 mm and 1 mm. More specifically, the line width W1 of the first fold line structure 211 and the second fold line structure 212 may both be approximately 0.3 mm.

[0107] In such Figure 5 and Figure 6 In the illustrated embodiment, the width W3 of the blank area 2132 of the constituent unit on the first fold line structure 211 and / or the second fold line structure 212 may be slightly larger than the line width W1 of the constituent unit; or, the width W3 of the blank area 2132 of the constituent unit on the first fold line structure 211 and / or the second fold line structure 212 may be approximately 0.4 mm. More specifically, the width W3 of the blank area 2132 of the constituent unit on the first fold line structure 211 and / or the second fold line structure 212 may be 0.4±0.1 mm.

[0108] In such Figure 5-10 In the illustrated embodiment, the extension length L of the edge of the constituent unit on the first fold line structure 211 and / or the second fold line structure 212 may be approximately 2.4 mm. Specifically, the extension length L of at least one edge of the constituent unit on the first fold line structure 211 and / or the second fold line structure 212 may be 2.4±0.1 mm.

[0109] In such Figure 5 and Figure 6 In the illustrated embodiment, the extension lengths of the two edges of the constituent units on the first fold line structure 211 and / or the second fold line structure 212 are different, and the constituent units on the first fold line structure 211 and / or the second fold line structure 212 may be approximately right triangles.

[0110] When the first fold line structure 211 and the second fold line structure 212 are spatially stacked in the heating body 21, in order to make the first fold line structure 211 and the second fold line structure 212 work normally, at least one of the first fold line structure 211 and the second fold line structure 212 has an insulating layer on its surface, so that the first fold line structure 211 and the second fold line structure 212 are insulated from each other. The insulating layer can be an insulating material that can withstand a high temperature of 600°C, the insulating layer can be a mica sheet, a glass fiber sheet or a ceramic, the insulating layer can be formed on the surface of the first fold line structure 211 and / or the second fold line structure 212 by chemical deposition, physical deposition, high temperature oxidation, ion sputtering, particle injection, printing or spraying, etc., and the insulating layer can contain silicon dioxide, aluminum oxide, chromium-containing carbide, etc.

[0111] When the first fold line structure 211 and the second fold line structure 212 are laid flat in the heating body 21, the width W4 of the heating body 21 is equal to the sum of the width of the first fold line structure 211, the width of the second fold line structure 212 and the distance between the first fold line structure 211 and the second fold line structure 212. At this time, the width W4 of the heating body 21 can be about 4.8 mm. Specifically, the width W4 of the heating body 21 can be 4.8±0.15 mm. When the first fold line structure 211 and the second fold line structure 212 are stacked in space in the heating body 21, the width W4 of the heating body 21 is approximately equal to the width of the first fold line structure 211 or approximately equal to the width of the second fold line structure 212. At this time, the width of the heating body 21 can be about 2.4 mm. Specifically, the width of the heating body 21 can be 2.4±0.15 mm.

[0112] It should be noted that when the first fold line structure 211 and the second fold line structure 212 in the heating body 21 are stacked in space, the heating body 21 can be unfolded and laid flat to form a structure such as 5- Figure 8 Shape shown.

[0113] Please refer to Figure 2 , the shell 22 for receiving the heating body 21 can be sheet-shaped. Compared with a circular shell, the heating component 2 using a sheet-shaped shell 22 has a smaller volume, so when the heating component 2 is inserted into the interior of the aerosol generating product 1, it can reduce the internal space occupied by the aerosol generating product 1 and reduce the squeezing of the aerosol forming matrix 11, which is conducive to smooth air flow in the aerosol forming matrix 11 and conducive to the generation and discharge of aerosols. And compared with a circular shell, the heating component 2 using a sheet-shaped shell 22 has a larger specific surface area (area to volume ratio), which is conducive to increasing the heating efficiency of the aerosol generating product 1, and at the same time, it can increase the heating rate of the shell 22, which is beneficial to the rapid generation of aerosols, and can reduce the waiting time for the user to inhale the first aerosol, and can reduce the waiting time for the first aerosol to be inhaled to less than 5s.

[0114] Based on this, the first fold line structure 211 can be sheet-like, for example, the first fold line structure 211 can be constructed into a sheet shape, or the first fold line structure 211 can be arranged on a sheet-like carrier, for example, the first fold line structure 211 can be printed on a cast sheet; the second fold line structure 212 can be sheet-like, for example, the second fold line structure 212 can be constructed into a sheet shape, or the second fold line structure 212 can be arranged on a sheet-like carrier, for example, the second fold line structure 212 can be printed on a cast sheet.

[0115] When the first fold line structure 211 and the second fold line structure 212 are spatially stacked in the heating body 21 , the width W5 of the shell 22 may be 2.8±0.3 mm, and the thickness D of the shell may be 0.5±0.1 mm.

[0116] The end of the shell 22 that is first inserted into the aerosol generating article 1 may be configured to be triangular or arc-shaped to facilitate the insertion of the shell 22 into the aerosol generating article 1 .

[0117] In order to facilitate the assembly of the heating body 21 and the shell 22 , the shell 22 may include a sheet-shaped first shell 221 and a sheet-shaped second shell 222 , and the heating body 21 is clamped between the first shell 221 and the second shell 222 .

[0118] In one embodiment, reference may be made to Figure 3 , at least part of the first shell 221 and the second shell 222 are made of a heat-conducting material, which can be understood as a material having a thermal conductivity of at least 10 W / (m·K) at 23°C and a relative humidity of 50%, preferably at least 40 W / (m·K), and more preferably at least 100 W / (m·K). Specifically, the support tube is formed of a material having a thermal conductivity of at least 40 W / (m·K) at 23°C and a relative humidity of 50%, preferably at least 100 W / (m·K), more preferably at least 150 W / (m·K), and most preferably at least 200 W / (m·K). Suitable heat-conducting materials include but are not limited to: graphite, graphene, aluminum, copper, zinc, steel, silver, heat-conducting polymers, or any combination or alloy thereof. Therefore, the heating rate of the surface of the heating component 2 is fast, which is conducive to the aerosol generating product 1 to quickly generate the first aerosol.

[0119] Specifically, at least part of the first shell 221 and the second shell 222 can be made of metal, which has greater hardness and lower heat capacity. Therefore, at least part of the first shell 221 and the second shell 222 can not only have a thinner thickness, but also have a faster heating rate and lower heat loss.

[0120] There may be an accommodating inner cavity between the first shell 221 and the second shell 222, in which at least part of the heating body 21 is accommodated, and the accommodating inner cavity may position the heating body 21 to ensure that the heating body 21 and the shell 22 are coaxial. In order to prevent electrical conduction between the shell 21 and the heating body 22, the heating assembly 2 may further include a filler 23, which may be an inorganic high temperature resistant insulating material that can withstand a high temperature of 600°C. The thermal expansion coefficient of the filler 23 may be close to that of the metal shell 22, for example, the thermal expansion coefficient of the filler 23 may be not less than 8ppm / °C, and the filler 23 may be one or more of sodium silicate, aluminum silicate, aluminum dihydrogen phosphate, silicon dioxide, barium oxide, magnesium oxide, aluminum oxide, and the like. The filler 23 is filled between the heating body 21 and the shell 22.

[0121] Among them, the metal in the shell 22 can be a stainless steel system such as 316 series, 304 series, etc.; or, the shell 22 can be spliced ​​with materials with different thermal conductivities. For example, the section of the shell 22 that contacts the aerosol-forming matrix 11 can be made of aluminum or copper with higher thermal conductivity, and the section of the shell 22 that is not in contact with the aerosol-forming matrix 11 can be made of low thermal conductivity materials such as stainless steel.

[0122] The first shell 221 and the second shell 222 may have the same wall thickness, for example, the wall thickness of the first shell 221 and the second shell 222 may be 0.1 mm, and the depth of the accommodating inner cavity may be greater than or equal to the thickness of the heating body 21, for example, the depth of the accommodating inner cavity may be 0.3 mm.

[0123] The edges of the first shell 221 and the second shell 222 may be welded together. A high radiation layer may be provided on the outer surface of the first shell 221 and the second shell 222, and the emissivity of the high radiation layer is greater than or equal to 0.8. The high radiation layer may include silicon carbide or silicon dioxide, etc. The high radiation layer increases the heating efficiency and heating depth of the aerosol generating article 1 by the heating component 2, which helps to improve the uniformity of heating of the aerosol generating article 1.

[0124] When the first shell 221 and the second shell 222 are at least partially made of metal, the total weight of the heating component 2 can be no more than 0.2g, for example, can be about 0.1g, thereby significantly improving the heating efficiency of the heating component 2 and significantly reducing the mass heat capacity and energy consumption.

[0125] In one embodiment, reference may be made to Figure 4At least part of the first shell 221 and the second shell 222 is made of ceramic. For example, the first shell 221 and the second shell 222 can be made of cast sheets, the heating body 21 is clamped between the cast sheets on both sides, and then the cast sheets are sintered so that the heating body 21 and the cast sheets form an integrated structure. The thickness of a single-layer cast sheet can be less than 0.3 mm, for example, about 0.1 mm. The cast sheet can be an alumina cast sheet.

[0126] Regardless of whether at least a portion of the housing 22 is made of metal or ceramic, the thickness of the heating component 2 may be between 0.35 mm and 0.6 mm.

[0127] It should be noted that, in other embodiments, the first fold line structure and the second fold line structure on the heating body arranged in the sheet-like shell may be symmetrically arranged; or, the heating body arranged in the sheet-like shell may be a mesh, for example, an etched mesh; or, the heating body arranged between the sheet-like first shell and the sheet-like second shell may be a printed heating track, which may have one or more fold line structures, or may be a mesh.

[0128] The above-mentioned heating component and aerosol generating device, the heating body includes a first fold line structure and a second fold line structure. The fold line structure has a longer heating trajectory than the straight line structure, which is beneficial to improving the heating power of the heating component, and the first fold line structure and the second fold line structure are arranged in a sheet-like shell in a spatially staggered and stacked manner, thereby not only increasing the specific surface area of ​​the heating component, improving the heating efficiency of the heating component and shortening the time for the aerosol generating product to generate the first aerosol, but also helping to evenly distribute the heat on the heating component, which is beneficial to uniform heating of the aerosol generating product and ensuring that the aerosol generating product generates high-quality aerosol.

[0129] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present application.

Claims

1. A heating component, characterized in that: Comprising: A sheet-like housing; And A heating element, at least partially disposed in the housing, the heating element including a first zigzag structure and a second zigzag structure; The first zigzag structure and the second zigzag structure are spatially offset and stacked.

2. The heating assembly according to claim 1, characterized in that Both the first zigzag structure and the second zigzag structure include at least one constituent unit, the constituent unit including a corner and a blank area oppositely arranged with respect to the corner; Wherein, at least part of the blank area on the first zigzag structure is stacked with at least part of the corner on the second zigzag structure.

3. The heating assembly according to claim 2, characterized in that The constituent unit is substantially in a "V" shape, a "C" shape or a "匚" shape.

4. The heating assembly according to claim 2, characterized in that The constituent unit includes an edge forming the corner, and the edge defines at least a partial boundary of the corner.

5. The heating assembly according to claim 2, characterized in that The blank area on the first zigzag structure is offset from the blank area on the second zigzag structure; or The corner on the first zigzag structure is offset from the corner on the second zigzag structure.

6. The heating assembly according to claim 2, characterized in that The number of constituent units on the first zigzag structure is the same as the number of constituent units on the second zigzag structure.

7. The heating assembly according to claim 2, characterized in that The constituent units on the first zigzag structure are the same as the constituent units on the second zigzag structure.

8. The heating assembly according to claim 2, characterized in that The constituent units on the first zigzag structure and the constituent units on the second zigzag structure have the same arrangement density.

9. The heating assembly according to claim 1, characterized in that The heat density in the middle area of the heating element is greater than the heat density at the upper and lower ends of the heating element.

10. The heating assembly according to claim 1, wherein: The resistance values of the first zigzag structure and the second zigzag structure are equal or close; or The path of the current flowing through the first zigzag structure is substantially equal to the path of the current flowing through the second zigzag structure.

11. The heating assembly according to claim 1, characterized in that The resistance of the heating element is between 0.4Ω - 3Ω.

12. The heating assembly according to claim 1, wherein: The free ends of the first zigzag structure and the second zigzag structure respectively form a pin, and the sum of the resistance values of the two pins is less than 25% of the resistance value of the heating element.

13. The heating assembly according to claim 12, characterized in that The line width of the pin is greater than or equal to the line width of the constituent unit; or The line width of the constituent unit is between 0.03mm - 1mm.

14. The heating assembly according to claim 1, wherein: The first zigzag structure and the second zigzag structure are electrically connected.

15. The heating assembly according to claim 14, characterized in that The first zigzag structure and the second zigzag structure are an integral structure formed by etching or stamping a metal sheet; or The first zigzag structure and the second zigzag structure are an integral structure formed by folding a metal strip back and forth.

16. The heating assembly of claim 14, wherein: The first zigzag structure and the second zigzag structure are connected by welding; wherein, At least one of the first zigzag structure and the second zigzag structure is formed by etching or stamping a metal sheet; or At least one of the first zigzag structure and the second zigzag structure is formed by folding a metal strip back and forth.

17. The heating assembly of claim 1, wherein: The thickness of the heating element is between 0.05mm - 0.4mm; or The thickness of the heating assembly is between 0.35mm - 0.6mm.

18. The heating assembly of claim 1, wherein: The housing includes a sheet-like first housing and a sheet-like second housing, and the heating element is held between the first housing and the second housing.

19. The heating assembly of claim 1, wherein: At least part of the housing is made of a heat-conducting material; or At least part of the housing is made of ceramics.

20. The heating assembly of claim 1, wherein: At least part of the housing is made of metal, and the outer surface of the housing has a high-radiation layer with an emissivity greater than or equal to 0.

8.

21. A heating component, characterized in that: Comprising: A sheet-like housing; And a heating body, at least partially arranged in the housing, the heating body comprising a first fold line structure and a second fold line structure; The first fold line structure and the second fold line structure are arranged non-axisymmetrically with each other.

22. The heating assembly of claim 21, wherein: The first fold line structure and the second fold line structure each include at least one constituent unit, and the number of constituent units on the first fold line structure is different from the number of constituent units on the second fold line structure; or The density of arrangement of the constituent units on the first fold line structure is different from the density of arrangement of the constituent units on the second fold line structure; or At least one constituent unit on the first fold line structure is different from at least one constituent unit on the second fold line structure; or At least one constituent unit on the first fold line structure and at least one constituent unit on the second fold line structure are offset from each other.

23. An aerosol generating device, characterized in that: The heating component comprises the heating component according to any one of claims 1 to 22, and further comprises a power supply component for providing electric power to the heating component.

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