Heating assembly of aerosol generating device

Abstract

The invention discloses a heating assembly capable of being used for an aerosol generating device, the heating assembly comprises a heating pipe and a supporting part, an opening is formed in the end, close to the mouth of a user, of the heating assembly, an aerosol generating product is inserted into the heating assembly through the opening, and the heating pipe is kept fixed relative to the heating assembly through the supporting part. The inner diameter of the heating pipe is smaller than the outer diameter of the aerosol generating product, the heating pipe and the absorbing piece are sequentially arranged from near to far away from the mouth of a user in the axial direction, and the absorbing piece is made of porous materials.

Description

Technical Field

[0001] The invention relates to the field of novel tobacco, and in particular to a heating component of an aerosol generating device. Background Art

[0002] Studies have shown that aerosol-generating products can release aroma substances at relatively low temperatures (below 500°C). Too high a temperature will not only increase the types and contents of harmful components in smoke, but also easily convert aroma components into harmful substances. Therefore, if the heating temperature of the aerosol generating device is reduced to below 500°C, that is, the so-called "heating without burning", a variety of harmful components in the smoke can be greatly reduced, while the aroma components are relatively less affected, and some aroma components may even increase due to reduced pyrolysis. Based on this, a new aerosol generating system that applies the concept of "heating without burning" came into being. In this new system, aerosol-generating products are only heated but not burned, and the harmful chemical components and biological toxicity of smoke are greatly reduced.

[0003] At present, the heating forms of aerosol generating devices are mainly divided into two forms: central heating and circumferential heating. In contrast, the circumferentially heated aerosol generating device can heat the tobacco more evenly and can more effectively convert the chemical substances in the aerosol generating matrix. This helps to improve the uniformity and stability of the smoke, thereby better meeting the taste requirements of smokers. However, conventional circumferential heating tubes have some defects. For example, the diameter of conventional circumferential heating tubes is slightly larger than that of aerosol generating products, resulting in large volume and slow heating rate. In addition, due to the presence of gaps in this type of heating component, smoke can easily escape into the cavity, and smoke can easily condense on the inner wall of the heating tube to form coke. The coke is sticky and difficult to clean, and will seriously affect the heating efficiency in the long run. The current conventional method is to scrape with cleaning tools such as a brush, which is manual cleaning, which is more troublesome and may scratch the inner wall of the heating tube.

[0004] Therefore, in order to avoid the defects of the above-mentioned circumferential heating assembly, it is necessary to develop a heating assembly with simple structure, easy cleaning, high heating efficiency and fast heating speed. Summary of the invention

[0005] The purpose of the present invention is to avoid the problems of heating speed and cleaning of the above-mentioned heating component during use, and to provide a heating component that can effectively prevent tar from accumulating on the inner wall of the heating tube and has a fast heating speed and high heating efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A heating component of an aerosol generating device comprises a heating tube and a supporting part. An opening is arranged at one end of the heating component closer to a user's mouth, an aerosol generating product is inserted into the heating component through the opening, the heating tube is used to heat the aerosol generating product, the heating tube is supported by the supporting part, the inner diameter of the heating tube is smaller than the outer diameter of the aerosol generating product, the heating tube and an absorbent are arranged in sequence from near to far from the user's mouth along the axial direction, and the absorbent is made of a porous material.

[0008] Furthermore, the supporting portion includes a first bracket and a second bracket.

[0009] Furthermore, the first bracket, the heating tube and the second bracket are arranged in sequence from near to far from the nozzle end.

[0010] Furthermore, the second bracket is provided with an opening closer to the mouth end.

[0011] Furthermore, the second bracket includes a wall portion and a cantilever, the wall portion is an axially extending structure, and the cantilever is a radially extending structure.

[0012] Furthermore, the inner wall of the wall portion forms a cavity.

[0013] Further, at least a portion of the absorbent is placed in the cavity.

[0014] Furthermore, the second bracket is provided with a first limit member, a second limit member and a boss in sequence from near to far from the mouth end.

[0015] Furthermore, a connecting piece is provided at a position of the heating tube away from the nozzle end, and the first limiting piece cooperates with the connecting piece to limit the relative rotation of the heating tube in the circumferential direction.

[0016] Furthermore, the second limiting member limits the relative movement of the heating tube along the axial direction.

[0017] Furthermore, the absorbent is placed on the boss.

[0018] Furthermore, the second bracket includes an air inlet hole.

[0019] Furthermore, the air inlet hole is arranged on the side wall of the second bracket.

[0020] Furthermore, the first limiting member is a radial protrusion, and the connecting member is a notch.

[0021] Furthermore, the first bracket is in the shape of a hollow cylinder as a whole, and includes at least one section of inner diameter tapering zone from near to far along the mouth end, the inner diameter at the maximum inner diameter of the inner diameter tapering zone is larger than the outer diameter of the aerosol generating product, and the inner diameter at the minimum inner diameter of the inner diameter tapering zone is not larger than the outer diameter of the aerosol generating product.

[0022] Furthermore, a transition piece is provided at the inner wall of the connection position between the first bracket and the heating tube, the minimum inner diameter formed by the transition piece is no larger than the outer diameter of the aerosol generating product, and the cross-sectional structure of the transition piece is a passivation structure to avoid damaging the aerosol generating product at the connection point.

[0023] Furthermore, the heating component also includes a heat insulation part.

[0024] Furthermore, the heat insulation part is arranged on the periphery of the heating tube.

[0025] Furthermore, the heat insulation part is provided with a first heat insulation layer, a second heat insulation layer and a third heat insulation layer in sequence from the inside to the outside along the radial direction.

[0026] Furthermore, a first thermal insulation cavity is formed between the first thermal insulation layer and the heating tube.

[0027] Furthermore, a second thermal insulation cavity is formed between the second thermal insulation layer and the first thermal insulation layer.

[0028] Furthermore, a third thermal insulation cavity is formed between the third thermal insulation layer and the second thermal insulation layer.

[0029] Furthermore, the first thermal insulation layer, the second thermal insulation layer and the third thermal insulation layer are all sealed.

[0030] Furthermore, the first heat insulation layer includes a metal material.

[0031] A heating component of an aerosol generating device, the heating component comprising a heating tube and a support portion, an opening being provided at one end of the heating component closer to a user's mouth, an aerosol generating product being inserted into the heating component through the opening, the heating tube being supported and installed by the support portion, the support portion comprising a first bracket, the aerosol generating product being sequentially inserted into the first bracket and the heating tube through the opening; a transition piece being provided at the inner wall of the first bracket at a connection position with the heating tube, a minimum inner diameter formed by the transition piece being no larger than an outer diameter of the aerosol generating product, a cross-sectional structure of the transition piece being a passivation structure to avoid damaging the aerosol generating product at the connection portion; the inner diameter of the heating tube being smaller than the outer diameter of the aerosol generating product.

[0032] The heat source of the aerosol generating device can utilize the principle of resistance heating, infrared heating, and electromagnetic induction heating. At present, the heating forms of aerosol generating devices are mainly divided into two forms: central heating and circumferential heating. In contrast, the circumferentially heated aerosol generating device can heat the tobacco more evenly and can more effectively convert the chemical substances in the aerosol generating matrix. This helps to improve the uniformity and stability of the smoke, thereby better meeting the taste requirements of smokers.

[0033] However, conventional aerosol generating devices that use circumferential heating have some defects. For example, the diameter of the conventional circumferential heating tube is slightly larger than that of the aerosol generating product, resulting in a large volume, a long heating distance, and a slow heating speed. In addition, due to the gap between the heating tube and the aerosol generating product, the smoke can easily escape into the cavity of the heating tube, and the smoke can easily condense on the inner wall of the heating tube to form coke. The coke is sticky and difficult to clean, and will seriously affect the heating efficiency in the long run. The current conventional method is to scrape with a cleaning tool such as a brush, which is manual cleaning, which is troublesome and may scratch the inner wall of the heating tube.

[0034] Among them, the aerosol-generating article is a smoking article, comprising an aerosol-forming substrate which, upon heating, generates an aerosol which is directly inhalable into the lungs of a user through the user's mouth.

[0035] Preferably, the aerosol-forming substrate is a solid aerosol-forming substrate.The aerosol-forming substrate may comprise both solid and liquid components.

[0036] Preferably, the aerosol-forming substrate comprises nicotine. In some preferred embodiments, the aerosol-forming substrate comprises tobacco. For example, the aerosol-forming material may be formed from a sheet of homogenized tobacco.

[0037] Alternatively or additionally, the aerosol-forming substrate may comprise a tobacco-free aerosol-forming material.For example, the aerosol-forming material may be a sheet comprising nicotine salt and an aerosol former.

[0038] If the aerosol-forming substrate is a solid aerosol-forming substrate, the solid aerosol-forming substrate may comprise one or more of a powder, granules, pellets, fragments, strips, rods or sheets containing one or more of herb leaves, tobacco leaves, tobacco ribs, flat tobacco and homogenized tobacco.

[0039] In this patent, aerosol former is used to describe any suitable known compound or mixture of compounds which, in use, promotes the formation of an aerosol and which is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating article.

[0040] Suitable aerosol formers are known in the art and include, but are not limited to, polyols such as propylene glycol, triethylene glycol, 1,3-butylene glycol and glycerol; esters of polyols such as glycerol monoacetate, glycerol diacetate or glycerol triacetate; and aliphatic esters of mono-, di- or polycarboxylic acids such as dimethyl dodecanedioate and dimethyl tetradecanedioate. Preferred aerosol formers are polyols or mixtures thereof such as propylene glycol, triethylene glycol, 1,3-butylene glycol, and most preferably glycerol.

[0041] The aerosol-forming substrate may comprise a single aerosol-forming agent. Alternatively, the aerosol-forming substrate may comprise a combination of two or more aerosol-forming agents.

[0042] Preferably, the aerosol-forming substrate has an aerosol-forming agent content of greater than 5% by dry weight. More preferably, the aerosol-forming substrate may have an aerosol-forming agent content of between about 5% and about 30% by dry weight. In one embodiment, the aerosol-forming substrate has an aerosol-forming agent content of about 20% by dry weight.

[0043] Aerosol-forming substrates including homogenised tobacco sheets for use in aerosol-generating articles may be manufactured by roll-forming, slurry-making and paper-making processes known in the art.

[0044] Preferably, the aerosol-forming article is in the form of a cigarette, comprising an aerosol-forming substrate, a support element, an aerosol-cooling element and a mouthpiece. Preferably, the aerosol-forming substrate, the support element, the aerosol-cooling element and the mouthpiece are substantially cylindrical and have substantially similar outer diameters.

[0045] The various parts of the aerosol-generating article are surrounded by an outer wrapper. The outer wrapper is formed from any suitable material or combination of materials. Preferably, the outer wrapper is cigarette paper.

[0046] The technical effects of the present invention are as follows:

[0047] The present invention optimizes the design of the heating component of the aerosol generating device so that the inner diameter of the heating tube is smaller than the outer diameter of the aerosol generating product. When the aerosol generating product is inserted into the heating component, the inner wall of the heating tube slightly squeezes the aerosol generating product, the contact is more complete, the heat transfer distance is smaller, the temperature difference between the surface and the center of the aerosol generating matrix is ​​smaller, and the heating is more complete. In addition, since the heating tube is in close contact with the aerosol generating product, the smoke will not escape in the heating tube, thereby preventing the smoke from condensing and coking on the inner wall of the heating tube. The smoke will flow to the far end of the absorber under the guidance of the heating component. The absorber is made of porous material and can efficiently absorb the smoke condensate. The absorber can also be replaced regularly. In addition, the first bracket of the heating component adopts a tapered design to provide guidance for the aerosol generating product to be inserted into the heating tube, and the junction between the first bracket and the heating tube is passivated to prevent the junction from sharply piercing the aerosol generating product, ensuring that the aerosol generating product can smoothly enter and exit the heating component. In addition, the heating component also includes a heat insulation part. The design of the heat insulation part makes the heat transfer efficiency higher and the heating speed faster.

[0048] The present invention optimizes the design of the heating component of the aerosol generating device so that the inner diameter of the heating tube is smaller than the outer diameter of the aerosol generating product, and the contact is more complete, thereby improving the heat transfer efficiency and increasing the heat utilization rate. It also guides the smoke and directly guides it to the absorbent for absorption. The heating component can be cleaned by regularly treating the absorbent, which is very convenient. The structure of the first bracket guides the aerosol generating product. In addition, a heat insulation part is provided around it, which further improves the heat transfer efficiency.

[0049] In summary, the present invention provides a heating component with simple structure, easy cleaning, convenient use and high thermal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The above technical contents of the present invention and the following specific embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the accompanying drawings are only examples of the technical solutions claimed for protection. In the accompanying drawings, the same reference numerals represent the same or similar elements. Unless otherwise stated, the figures in the accompanying drawings do not constitute a scale limitation.

[0051] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0052] Figure 1 This is a cross-sectional view of the heating tube and the support part of the present application in a matching state;

[0053] Figure 2 This is a partial enlarged view of the second bracket of the present application;

[0054] Figure 3 This is a partial enlarged view of the first bracket of the present application;

[0055] Figure 4 It is a three-dimensional diagram of the second bracket of the present application;

[0056] Figure 5 It is a three-dimensional diagram of the heating tube of the present application;

[0057] Figure 6 is a side view of an aerosol generating article;

[0058] Figure 7 It is a cross-sectional view of the heating tube, support part and insulation part of the present application in a coordinated state.

[0059] Wherein, the accompanying drawings are described as follows:

[0060] Aerosol generating articles 30

[0061] Heating element 2000

[0062] Heating tube 2100

[0063] Connector 2110

[0064] Supporting part 2200

[0065] First bracket 2210

[0066] Transition piece 2211

[0067] Second bracket 2220

[0068] Air Inlet 2221

[0069] The first stopper 2222

[0070] The second limiting member 2223

[0071] Boss 2224

[0072] Cavity 2225

[0073] Wall 2226

[0074] Cantilever 2227

[0075] Absorbent 2300

[0076] Insulation 2400

[0077] First insulation layer 2410

[0078] The first insulation cavity 2411

[0079] Second insulation layer 2420

[0080] The second insulation cavity 2421

[0081] The third insulation layer 2430

[0082] The third insulation cavity 2431

[0083] Gasket 2440 DETAILED DESCRIPTION

[0084] The detailed features and advantages of the present invention are described in the following specific embodiments, and the contents are sufficient to enable those skilled in the art to understand the technical content of the present invention and implement it accordingly. According to this specification, claims and drawings, those skilled in the art can easily understand the relevant purposes and advantages of the present invention. Many specific details are described in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0085] For ease of understanding, the directional terms such as "far" and "near" used in this specification are based on one end of the user's mouth, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation of the present invention.

[0086] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0087] like Figure 1 The figure shows a cross-sectional view of the heating assembly 2000 in Example 1. The cross-sectional view shows the state where the aerosol generating product 30 is inserted into the heating assembly 2000. The heating form of the heating assembly is circumferential heating, and the heating assembly 2000 comprises a heating tube 2100, a support portion 2200 and an absorber 2300. Among them, the absorber 2300 is arranged at the distal end of the heating tube 2100, and the heating tube 2100 is fixed by the support portion 2200 so that it does not move relative to the entire heating assembly 2000. The end of the heating assembly 2000 closer to the user's mouth is provided with an opening, and the aerosol generating product 30 is inserted into the heating assembly through the opening, and the inner diameter of the heating tube 2100 is smaller than the outer diameter of the aerosol generating product 30.

[0088] Specifically, the support portion 2200 includes a first bracket 2210 closer to the mouth end and a second bracket 2220 farther from the mouth end. In this embodiment, the first bracket 2210 is a hollow cylindrical structure as a whole, and the second bracket 2220 is provided with an opening closer to the mouth end, and the second bracket includes a wall portion 2226 extending in the axial direction and a cantilever 2227 extending in the radial direction. The second bracket 2220 is assembled with the rest of the aerosol generating device through the cantilever structure, and a cavity 2225 is formed by surrounding the wall portion.

[0089] See also Figure 1 and Figure 3, the first bracket 2210 not only fixes the heating tube, but also guides the insertion of the aerosol generating product 30. The proximal surface of the heating tube 2100 is abutted against the distal surface of the first bracket 2210. The first bracket 2210 includes at least one inner diameter tapering zone from near to far along the mouth end, the maximum inner diameter of the inner diameter tapering zone is greater than the outer diameter of the aerosol generating product 30, and the minimum inner diameter of the inner diameter tapering zone is not greater than the outer diameter of the aerosol generating product 30. Preferably, the first bracket 2210 is shaped like a trumpet as a whole. It is easy to understand that the tapered mouth from near to far of the first bracket 2210 can guide the aerosol generating product 30 to be inserted into the heating tube 2100 with a smaller inner diameter, and the structural design of the first bracket 2210 can make it easier to insert the aerosol generating product into the heating tube 2100 with a smaller diameter than it. A transition piece 2211 is provided at the connection between the first bracket 2210 and the heating tube 2100 . The transition piece 2211 is provided on the inner wall of the first bracket 2210 . The interface structure of the transition piece 2211 is a passivation structure.

[0090] Preferably, the transition piece 2211 is a rounded or obtuse structure. It is easy to understand that during the insertion and removal process of the aerosol generating product 30, the buffering of the transition piece 2211 structure can effectively prevent the aerosol generating device 30 from being punctured due to its small diameter and sharp design, thereby ensuring that the aerosol generating product 30 can smoothly enter and exit the heating assembly 2000.

[0091] Furthermore, the minimum inner diameter of the transition piece 2211 is not greater than the inner diameter of the heating tube 2100 at the connection point.

[0092] See also Figure 2 and Figure 4 , are respectively a partial enlarged cross-sectional view and a three-dimensional view of the second bracket 2220 . The cavity 2225 of the second bracket 2220 accommodates the absorbent 2300 , and at least a part of the absorbent 2300 is placed in the cavity 2225 .

[0093] Specifically, the absorbent 2300 is composed of a porous structure, which is any one of porous ceramic materials, acetate fiber, and foamed inorganic materials, or any combination of the above materials.

[0094] The second bracket 2220 includes a first stopper 2222 and a second stopper 2223 in sequence from near to far. Figure 5 When the heating tube 2100 shown is matched, the connecting piece 2110 at the far end of the heating tube 2100 is connected to the second bracket 2220, and the circumferential rotation of the heating tube 2100 relative to the heating component 2000 is limited by the first limiting piece 2222, and the movement of the heating tube 2100 relative to the heating component 2000 in the axial direction is limited by the second limiting piece 2223.

[0095] Specifically, the first stopper 2222 is a convex block structure, the second stopper 2223 is a step structure, and the connecting member 2110 of the heating tube 2100 is a notch provided at the distal end. When the heating tube 2100 and the second bracket 2220 are assembled, the notch is aligned with the convex block for installation, and the size of the notch can be adapted to the size of the convex block, thereby limiting the relative rotation of the heating tube 2100 in the circumferential direction. The distal end surface of the heating tube 2100 and the step of the second stopper 2223 are offset to achieve the limitation in the axial direction.

[0096] like Figure 2 As shown, a boss 2224 is provided in the cavity 2225, and the end surface of the boss 2224 near the mouth is used to support the absorber 2300 to lift the absorber 2300. Through the setting of the boss 2224, the distal end surface of the absorber 2300 is prevented from contacting the bottom surface of the second bracket 2220, and the contact area with the second bracket 2220 is further reduced, and the heating component is easier to clean.

[0097] Specifically, the second bracket 2200 is also provided with an air inlet hole 2221. When the user inhales, the air flows through the air hole and the aerosol generating product into the user's oral cavity.

[0098] Specifically, the air inlet hole 2221 is disposed on the side wall of the second bracket 2200 .

[0099] Optionally, the number of the air inlet holes 2221 is 1 to 6.

[0100] Preferably, the number of the air inlet holes 2221 is 3.

[0101] Specifically, the support part 2200 is in direct contact with the heating tube 2100 and needs to have low thermal conductivity and high temperature resistant thermal stability. Optionally, the material of the support part 2200 is PEEK or inorganic ceramics.

[0102] refer to Figure 7, is a cross-sectional view of a heating assembly 2000 improved from Example 1, in which a heat insulating portion 2400 is provided on the periphery of the heating tube 2100 in Example 1, and relevant optimization is performed, and the heat insulating portion 2400 is provided with a first heat insulating layer 2410, a second heat insulating layer 2420, and a third heat insulating layer 2430 in sequence from the inside to the outside in the radial direction. A first heat insulating cavity 2411 is formed between the first heat insulating layer 2410 and the heating tube 2100, a second heat insulating cavity 2421 is formed between the second heat insulating layer 2420 and the first heat insulating layer 2410, and a third heat insulating cavity 2431 is formed between the third heat insulating layer 2430 and the second heat insulating layer 2420. Optionally, the first heat insulating layer 2410, the second heat insulating layer 2420, and the third heat insulating layer 2430 can be flexibly selected from metal or non-metal materials according to specific needs. Metal materials occupy less space, but due to the large thermal conductivity of the metal material itself, it is easy to lose heat, and the metal needs to be processed into a high-brightness inner surface to increase the radiation effect. Preferably, the first thermal insulation layer 2410 is made of metal material, and the second thermal insulation layer 2420 and the third thermal insulation layer 2430 are made of non-metallic material. In order to ensure the airtightness of the first thermal insulation cavity, a gasket 2440 is further provided between the first thermal insulation layer 2410 and the cantilever of the second bracket 2220. Furthermore, the proximal end of the first thermal insulation layer 2410 abuts against the proximal end of the second thermal insulation layer 2420, the proximal end of the second thermal insulation layer 2420 and the proximal end of the first bracket 2210 simultaneously abut against the proximal end of the third thermal insulation layer 2430, and the proximal end of the third thermal insulation layer 2430 and the proximal end of the first bracket 2210 clamp the proximal end of the second thermal insulation layer 2420. Through this assembly method, the assembly can be simplified and the airtightness of the thermal insulation cavity can be better achieved.

[0103] The present invention optimizes the design of the heating component of the aerosol generating device so that the inner diameter of the heating tube is smaller than the outer diameter of the aerosol generating product. When the aerosol generating product is inserted into the heating component, the inner wall of the heating tube slightly squeezes the aerosol generating product, the contact is more complete, the heat transfer distance is smaller, the temperature difference between the surface and the center of the aerosol generating matrix is ​​smaller, and the heating is more complete. In addition, since the heating tube is in close contact with the aerosol generating product, the smoke will not escape in the heating tube, thereby preventing the smoke from condensing and coking on the inner wall of the heating tube. The smoke will flow to the far end of the absorber under the guidance of the heating component. The absorber is made of porous material and can efficiently absorb the smoke condensate. The absorber can also be replaced regularly. In addition, the first bracket of the heating component adopts a tapered design to provide guidance for the aerosol generating product to be inserted into the heating tube, and the first bracket and the heating tube are passivated at the joint to avoid the sharp joint from piercing the aerosol generating product, ensuring that the aerosol generating product can smoothly enter and exit the heating component.

[0104] The present invention optimizes the design of the heating component of the aerosol generating device so that the inner diameter of the heating tube is smaller than the outer diameter of the aerosol generating product, and the contact is more complete, which improves the heat transfer efficiency and increases the heat utilization rate. The heating tube guides the smoke and directly guides the smoke to the absorber for absorption. The heating component can be cleaned by regular treatment of the absorber, which is very convenient. The tapered structure of the first bracket guides the aerosol generating product, and even if the inner diameter of the heating tube is smaller than the outer diameter of the aerosol generating product, it can be easily plugged in and out. In addition, the heating component also includes a heat insulation part to further improve the heat transfer efficiency.

[0105] In summary, the present invention provides a heating component with simple structure, easy cleaning, convenient use and high thermal efficiency.

[0106] The terms and expressions used herein are for descriptive purposes only, and the present invention should not be limited to these terms and expressions. The use of these terms and expressions does not mean to exclude any equivalent features of the illustrations and descriptions (or parts thereof), and it should be recognized that various modifications that may exist should also be included in the scope of the claims. Other modifications, variations and substitutions may also exist. Accordingly, the claims should be deemed to cover all such equivalents.

[0107] It can be understood that the above-mentioned technical features can be used in any combination without limitation.

[0108] Similarly, it should be pointed out that although the present invention has been described with reference to the current specific embodiments, ordinary technicians in this technical field should realize that the above embodiments are only used to illustrate the present invention, and various equivalent changes or substitutions may be made without departing from the spirit of the present invention. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present invention, they will fall within the scope of the claims of the present invention.

Claims

1. A heating component of an aerosol generating device, the heating component (2000) comprising a heating tube (2100) and a support portion (2200), the heating component (2000) being provided with an opening at one end closer to a user's mouth, the aerosol generating product (30) being inserted into the heating component through the opening, the heating tube (2100) being used to heat the aerosol generating product (30), the heating tube (2100) being mounted and supported by the support portion (2200), characterized in that: The inner diameter of the heating tube (2100) is smaller than the outer diameter of the aerosol generating product (30); the heating tube (2100) and the absorbent (2300) are arranged in sequence from near to far from the user's mouth along the axial direction; and the absorbent (2300) is made of a porous material.

2. The heating assembly of the aerosol generating device according to claim 1, characterized in that: The support portion (2200) comprises a first bracket (2210) and a second bracket (2220), and the first bracket (2210), the heating tube (2100) and the second bracket (2220) are arranged in sequence from near to far from the mouth end.

3. The heating assembly of the aerosol generating device according to claim 2, characterized in that: The second bracket (2200) is provided with an opening closer to the mouth end, and the second bracket (2200) includes a wall portion (2226) and a cantilever (2227), the wall portion (2226) is an axially extending structure, the cantilever (2227) is a radially extending structure, the inner wall of the wall portion (2226) forms a cavity (2225), and at least a part of the absorbent (2300) is placed in the cavity (2225).

4. The heating assembly of the aerosol generating device according to claim 2 or 3, characterized in that: The second bracket (2200) is provided with a first limit member (2222), a second limit member (2223) and a boss (2224) in sequence from near to far away from the mouth end, and the heating tube (2100) is provided with a connecting member (2110) away from the mouth end. The first limit member (2222) cooperates with the connecting member (2110) to limit the relative rotation of the heating tube (2100) in the circumferential direction, and the second limit member (2223) limits the relative movement of the heating tube (2100) in the axial direction. The absorber (2300) is placed on the boss (2224).

5. The heating assembly of the aerosol generating device according to claim 2 or 3, characterized in that: The second bracket (2200) comprises an air inlet hole (2221).

6. The heating assembly of the aerosol generating device according to claim 5, characterized in that: The air inlet hole (2211) is arranged on the side wall of the second bracket (2200).

7. The heating assembly of the aerosol generating device according to claim 4, characterized in that: The first limiting member (2222) is a radial protrusion, and the connecting member (2110) is a notch.

8. The heating assembly of the aerosol generating device according to any one of claims 2, 3, 6 and 7, characterized in that: The first bracket (2210) is in the shape of a hollow cylinder as a whole. The first bracket (2210) includes at least one section of inner diameter tapering zone from near to far along the mouth end. The inner diameter of the inner diameter tapering zone at the maximum inner diameter is larger than the outer diameter of the aerosol generating article (30), and the inner diameter of the inner diameter tapering zone at the minimum inner diameter is not larger than the outer diameter of the aerosol generating article (30).

9. The heating assembly of the aerosol generating device according to claim 8, characterized in that: The first bracket (2210) is provided with a transition piece (2211) at the inner wall of the connection position with the heating tube (2100), and the minimum inner diameter formed by the transition piece (2211) is not greater than the outer diameter of the aerosol generating product. The cross-sectional structure of the transition piece (2211) is a passivation structure to avoid damaging the aerosol generating product at the connection point.

10. The heating assembly of the aerosol generating device according to any one of claims 1 to 3, characterized in that: The heating component (2000) further comprises a heat insulating portion (2400), and the heat insulating portion (2400) is arranged on the periphery of the heating tube (2100); the heat insulating portion (2400) is provided with a first heat insulating layer (2410), a second heat insulating layer (2420) and a third heat insulating layer (2430) in sequence from the inside to the outside in a radial direction, a first heat insulating cavity (2411) is formed between the first heat insulating layer (2410) and the heating tube (2100), a second heat insulating cavity (2421) is formed between the second heat insulating layer (2420) and the first heat insulating layer (2410), and a third heat insulating cavity (2431) is formed between the third heat insulating layer (2430) and the second heat insulating layer (2420).

11. The heating assembly of the aerosol generating device according to claim 10, characterized in that: The first thermal insulation layer (2411), the second thermal insulation layer (2421) and the third thermal insulation layer (2431) are all sealed.

12. The heating assembly of the aerosol generating device according to claim 10, characterized in that: The first heat insulation layer (2411) comprises a metal material.

13. A heating component of an aerosol generating device, the heating component (2000) comprising a heating tube (2100) and a support portion (2200), the heating component (2000) being provided with an opening at one end closer to a user's mouth, the aerosol generating product (30) being inserted into the heating component through the opening, the heating tube (2100) being mounted and supported by the support portion (2200), characterized in that: The support portion (2200) comprises a first bracket (2210), and the aerosol generating product (30) is sequentially inserted into the first bracket (2210) and the heating tube (2100) through the opening; The first bracket (2210) is provided with a transition piece (2211) at the inner wall of the connection position with the heating tube (2100), the minimum inner diameter formed by the transition piece (2211) is not greater than the outer diameter of the aerosol generating product, and the cross-sectional structure of the transition piece (2211) is a passivation structure to avoid damaging the aerosol generating product at the connection position; The inner diameter of the heating tube (2100) is smaller than the outer diameter of the aerosol generating article (30).

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