Heating assembly and aerosol generating device

Abstract

According to the heating assembly and the aerosol generating device, due to the fact that a containing area and a heat exchange area are arranged in a pipe body in the axial direction of the pipe body, a heat exchange core in the pipe body and a heating piece outside the pipe body correspond to the heat exchange area, the heat exchange core is provided with a heat exchange channel for guiding airflow to enter the containing area, and a hollow structure corresponds to the containing area; the hollow structures and the heating pieces are arranged in the axial direction of the pipe body in a staggered mode, so that transmission of heat of the heating pieces to the containing area in the axial direction of the pipe body can be reduced through the hollow structures, the heat directly transmitted by the heating pieces can be concentrated in the heat exchange area, then the temperature of the heat exchange core is increased, and it is guaranteed that aerosol generating matrixes are fully heated; the aerosol generation speed is increased, and the aerosol generation amount is increased.

Description

Technical Field

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

[0002] The aerosol generating device can heat the aerosol generating substrate by heating without burning, so that the aerosol generating substrate generates aerosol for human absorption.

[0003] In an aerosol generating device that heats an aerosol generating substrate by means of a hot air flow, a heat exchanger is generally arranged upstream of the aerosol generating substrate in the direction of air flow, a heat exchange air passage is arranged in the heat exchanger, the heating element transfers heat to the heat exchanger, the heat exchanger heats the air flow passing through the heat exchange air passage, and the hot air flow heats the aerosol generating substrate when passing through the aerosol generating substrate to generate an aerosol. When the heating element transfers heat to the heat exchanger, the heat is relatively dispersed, which results in a low temperature of the heat exchanger, the aerosol generating substrate cannot be fully heated, the aerosol generating speed is slow, and the generated amount is small. Utility Model Content

[0004] The present application provides a heating component and an aerosol generating device to solve the technical problems of the aerosol generating device having a slow aerosol generating speed and a small generating amount.

[0005] According to the first aspect, a heating component is provided in an embodiment, comprising: a tube body, a receiving area and a heat exchange area arranged in the axial direction of the tube body are formed inside the tube body, the receiving area is used to accommodate an aerosol generating matrix, and a hollow structure is provided on the tube wall of the tube body, and the hollow structure corresponds to the receiving area in the axial direction of the tube body; a heat exchange core, at least partially located in the heat exchange area, the heat exchange core has a heat exchange channel running through the heat exchange core in the axial direction of the tube body, and the heat exchange channel is used to guide the airflow into the receiving area; a heating element is arranged on the periphery of the tube body, the heating element corresponds to the heat exchange area in the axial direction of the tube body, and the heating element and the hollow structure are staggered in the axial direction of the tube body to reduce the heat transfer to the receiving area.

[0006] In an optional embodiment, the hollow structure includes long holes extending in the circumferential direction of the tube body.

[0007] In an optional embodiment, there are multiple hollow structures; the multiple hollow structures are arranged at intervals in the circumferential direction of the tube body, and / or the multiple hollow structures are arranged at intervals in the axial direction of the tube body.

[0008] In an optional embodiment, the distance between the heat exchange core and the hollow structure in the axial direction of the tube body is greater than or equal to 1 mm.

[0009] In an optional embodiment, the heat exchange core includes a heat exchange part and a connecting part, the connecting part is connected to the side of the heat exchange part facing away from the receiving area in the axial direction of the tube body, the heat exchange channel is arranged in the heat exchange part, and the connecting part is used to achieve relative fixation of the heat exchange core and the tube body.

[0010] In an optional embodiment, in the axial direction of the tube body, the heat generating element corresponds to the heat exchanging portion, and the size of the heat generating element is equal to the size of the heat exchanging portion.

[0011] In an optional embodiment, the connecting portion has an abutment surface facing the tube body in the axial direction of the tube body, and the abutment surface can abut against the axial end surface of the tube body.

[0012] In an optional embodiment, the heating element includes a resistive heating layer; or, the heating element includes an electromagnetic heating layer, and the heating element further includes a coil located outside the electromagnetic heating layer in the radial direction of the tube body.

[0013] According to the second aspect, an embodiment provides an aerosol generating device, comprising a device body and a heating component as described above, wherein the device body is formed with an air inlet channel and an air outlet channel, and the heating component connects the air inlet channel and the air outlet channel.

[0014] In an optional embodiment, the device body includes a skeleton and an atomizer tube and a connecting tube mounted on the skeleton, the skeleton has an air inlet connected to the air inlet channel and an air outlet connected to the air outlet channel, at least part of the air inlet channel is formed by the connecting tube, at least part of the air outlet channel is formed by the atomizer tube, and the tube body is clamped between the connecting tube and the atomizer tube.

[0015] According to the heating assembly and aerosol generating device of the above-mentioned embodiments, since the receiving area and the heat exchange area inside the tube body are arranged in the axial direction of the tube body, the heat exchange core inside the tube body and the heating element outside the tube body both correspond to the heat exchange area, and the heat exchange core has a heat exchange channel for guiding the airflow into the receiving area, and the hollow structure corresponds to the receiving area, and the hollow structure and the heating element are staggered in the axial direction of the tube body. In this way, the hollow structure can be used to reduce the transfer of heat from the heating element to the receiving area in the axial direction of the tube body, which helps to concentrate the heat directly transferred by the heating element in the heat exchange area, thereby increasing the temperature of the heat exchange core, helping to ensure that the aerosol generating matrix is ​​fully heated, increasing the aerosol generation speed, and increasing the aerosol generation amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of an aerosol generating device after being matched with an aerosol generating substrate in an embodiment;

[0017] Figure 2 A schematic diagram of the internal structure of an aerosol generating device after being matched with an aerosol generating substrate in an embodiment;

[0018] Figure 3 A schematic diagram of the structure of a heating component in an embodiment;

[0019] Figure 4 It is a schematic diagram of temperature distribution when the heating component is in working state in one embodiment.

[0020] In the figure: 1. outer shell; 2. skeleton; 21. air inlet; 22. air outlet; 23. positioning ring; 3. atomizer tube; 31. outer tube; 32. thermal insulation layer; 4. heating component; 41. tube body; 411. first opening; 412. second opening; 413. receiving area; 414. heat exchange area; 415. hollow structure; 5. heat exchange core; 51. heat exchange part; 511. heat exchange channel; 52. connecting part; 521. connecting end; 6. connecting tube; 7. connecting joint; 8. sealing joint; 9. heating element; 10. aerosol generating matrix. DETAILED DESCRIPTION

[0021] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0022] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0023] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0024] The embodiment of the present application discloses a heating component, which is mainly used in an aerosol generating device to provide a heating source for an aerosol generating matrix 10 .

[0025] Please refer to Figure 2 and Figure 3 The heating assembly 4 of the embodiment of the present application includes a tube body 41, a heat exchange core 5 and a heating element 9. The interior of the tube body 41 is formed with a receiving area 413 and a heat exchange area 414 arranged in the axial direction of the tube body 41. The receiving area 413 is used to accommodate the aerosol generating matrix 10. A hollow structure 415 is provided on the tube wall of the tube body 41, and the hollow structure 415 corresponds to the receiving area 413 in the axial direction of the tube body 41; at least part of the heat exchange core 5 is located in the heat exchange area 414, and the heat exchange core 5 has a heat exchange channel 511 that penetrates the heat exchange core 5 in the axial direction of the tube body 41, and the heat exchange channel 511 is used to guide the airflow into the receiving area 413; the heating element 9 is arranged on the periphery of the tube body 41, and the heating element 9 corresponds to the heat exchange area 414 in the axial direction of the tube body 41. The heating element 9 and the hollow structure 415 are staggered in the axial direction of the tube body 41 to reduce the heat transfer to the receiving area 413.

[0026] Since the receiving area 413 and the heat exchange area 414 inside the tube body 41 are arranged in the axial direction of the tube body 41, the heat exchange core 5 in the tube body 41 and the heating element 9 outside the tube body 41 both correspond to the heat exchange area 414, and the heat exchange core 5 has a heat exchange channel 511 for guiding the airflow into the receiving area 413, and the hollow structure 415 corresponds to the receiving area 413, and the hollow structure 415 and the heating element 9 are staggered in the axial direction of the tube body 41. In this way, the hollow structure 415 can be used to reduce the transfer of heat from the heating element 9 to the receiving area 413 in the axial direction of the tube body 41, which helps to concentrate the heat directly transferred by the heating element 9 in the heat exchange area 414, thereby increasing the temperature of the heat exchange core 5, which helps to ensure that the aerosol generating matrix 10 is fully heated, improve the aerosol generation speed, and increase the aerosol generation amount.

[0027] Please refer to Figure 2 and Figure 3 The tube body 41 can be a square tube or a round tube structure. The tube body 41 is opened at both ends in the length direction. The opening at one end of the tube body 41 can be set as a first opening 411, and the opening at the other end can be set as a second opening 412. The first opening 411 is used to allow air to enter the tube body 41, and the second opening 412 is used to allow air to flow out of the tube body 41; at least part of the heat exchange core 5 is located in the tube body 41, which can be understood as a part of the heat exchange core 5 is located on the inner side of the tube body 41, and the other part can be arranged outside the tube body 41, such as it can be arranged on the axial outside of the end of the first opening 411 of the tube body 41, or in other embodiments, the entire heat exchange core 5 can be located in the heat exchange area 414 of the tube body 41.

[0028] The heat exchange core 5 is relatively fixed to the tube body 41. In one embodiment, please refer to Figure 2 and Figure 3 , which can be understood as the heat exchange core 5 and the tube body 41 being separately arranged, and the heat exchange core 5 and the tube body 41 being fixedly connected by assembly, such as by interference fit, clamping or other assembly methods; or in other embodiments, the heat exchange core 5 can also be integrally formed with the tube body 41, and the integral forming can be understood as the heat exchange core 5 and the tube body 41 being made of the same material, and the heat exchange core 5 and the tube body 41 being formed by the same process, and the heat exchange core 5 and the tube body 41 can be fixedly connected without assembly.

[0029] The heat exchange core 5 has an end face facing the second opening 412 in the axial direction of the tube body 41. The end face can be used as a dividing line to divide the internal area of ​​the tube body 41 into a heat exchange area 414 connected to the first opening 411 and a receiving area 413 connected to the second opening 412. The aerosol generating matrix 10 can be inserted into the receiving area 413 from the second opening 412 to accommodate at least part of the aerosol generating matrix 10 through the receiving area 413; after the aerosol generating matrix 10 and the heating component 4 are inserted into place, the outer peripheral surface of the aerosol generating matrix 10 is in contact with the inner peripheral surface of the tube body 41, and the axial end face of the aerosol generating matrix 10 is in contact with the end face of the heat exchange core 5 facing the receiving area 413, so that the aerosol generating matrix 10 can be restricted from escaping from the receiving area 413 by means of interference fit between the heating component 4 and the aerosol generating matrix 10.

[0030] The heat exchange core 5 located in the tube body 41 is in the heat exchange area 414. The heat exchange core 5 in the heat exchange area 414 has a heat exchange channel 511 that penetrates the heat exchange core 5 in the axial direction of the tube body 41. Figure 2 and Figure 3 In one embodiment, the heat exchange channel 511 connects the first opening 411 and the second opening 412, and the heat exchange channel 511 can guide the airflow entering the tube body 41 from the first opening 411 to the second opening 412. The heat exchange channel 511 can also transfer the heat of the heat exchange core 5 to the airflow flowing through the heat exchange channel 511, thereby heating the airflow and making the airflow flowing out of the second opening 412 a hot airflow.

[0031] In another embodiment, the heat exchange core 5 is disposed at one axial end of the tube body 41 , and the second opening 412 of the tube body 41 is blocked by the heat exchange core 5 , so that the airflow enters the heat exchange channel 511 in the heat exchange core 5 while entering the tube body 41 .

[0032] The heating element 9 is arranged on the periphery of the tube body 41, and the heating element 9 is fixedly connected to the tube body 41. The heating element 9 can be fixed on the outer wall of the tube body 41 by bonding. The heating element 9 corresponds to the heat exchange zone 414 in the axial direction of the tube body 41 to reduce the distance between the heating element 9 and the heat exchange core 5 in the axial direction of the tube body 41, thereby reducing the heat loss in the heat transfer process between the heating element 9 and the heat exchange core 5.

[0033] The hollow structure 415 on the tube wall of the tube body 41 corresponds to the receiving area 413 in the axial direction of the tube body 41, so that the hollow structure 415 and the heating element 9 are staggered in the axial direction of the tube body 41, and the hollow structure 415 and the heat exchange core 5 are also staggered in the axial direction of the tube body 41. The hollow structure 415 can isolate part of the heat of the heating element 9 from being transferred in the axial direction of the tube body 41, so that most of the heat of the heating element 9 can only be transferred to the heat exchange core 5 located in the heat exchange area 414 in the radial direction of the tube body 41, so that the heat can be concentrated in the heat exchange area 414, thereby increasing the temperature of the heat exchange core 5, ensuring that the aerosol generating matrix 10 is fully heated, increasing the aerosol generation speed, and increasing the aerosol generation amount.

[0034] In some embodiments, for the heat exchange core 5, please refer to Figure 3 The heat exchange core 5 includes a heat exchange portion 51 and a connection portion 52. The connection portion 52 is connected to the side of the heat exchange portion 51 facing away from the receiving area 413 in the axial direction of the tube body 41. In one example, the heat exchange portion 51 is located in the heat exchange area 414 in the tube body 41, and the connection portion 52 may have a portion located axially outside the end of the first opening 411 of the tube body 41. Of course, in another example, both the heat exchange portion 51 and the connection portion 52 may be located in the heat exchange area 414 in the tube body 41. The heat exchange channel 511 is provided on the heat exchange portion 51, and the heat exchange core 5 is relatively fixed to the tube body 41 through the connection portion 52.

[0035] Of course, in some other embodiments, the heat exchange core 5 only includes the heat exchange portion 51, and the heat exchange portion 51 is relatively fixed to the tube body 41 by bonding or integral molding.

[0036] In one embodiment, please continue to refer to Figure 2 and Figure 3 The heat exchange portion 51 is generally a cylindrical structure, and the connecting portion 52 is an annular structure extending in the axial direction of the tube body 41. The connecting portion 52 is in contact with the inner wall surface of the tube body 41, and the connecting portion 52 has a connecting end 521 facing the radial outside of the tube body 41, and the connecting end 521 is located at the end of the connecting portion 52 that is away from the heat exchange portion 51. The connecting end 521 is located axially outside the end of the tube body 41 where the first opening 411 is located, that is, the connecting end 521 is located outside the tube body 41, and the connecting end 521 has a supporting surface facing the tube body 41 in the axial direction of the tube body 41, and the supporting surface can be supported by the axial end surface of the tube body 41 at the first opening 411; and when the heating assembly 4 is installed in the aerosol generating device, the connecting end 521 can be clamped between the tube body 41 and other components such as the connecting tube 6, thereby realizing the relative fixation of the entire heat exchange core 5 and the tube body 41.

[0037] In another embodiment, the connection end 521 is located in the heat exchange area 414 in the tube body 41, and the connection end 521 is a hook protruding toward the radial outer side of the tube body 41. A groove is correspondingly provided on the inner wall of the tube body 41, and the hook has a supporting surface perpendicular to the axial direction of the tube body 41. The hook cooperates with the groove, and the supporting surface can be supported by the groove wall of the groove in the axial direction of the tube body 41 to limit the connection end 521 from escaping from the groove, thereby realizing the relative fixation of the heat exchange core 5 and the tube body 41.

[0038] In one embodiment, please refer to Figure 3 Since only the heat exchange channel 511 is set on the heat exchange part 51, the heat exchange part 51 and the heating element 9 can be arranged correspondingly in the axial direction of the tube body 41, and the size of the heat exchange part 51 in the axial direction of the tube body 41 is set to be equal to the size of the heating element 9 in the axial direction of the tube body 41. In this way, the heat of the heating element 9 is completely transferred to the heat exchange part 51 in the radial direction of the tube body 41, which helps to improve the heat utilization rate of the heating element 9.

[0039] Of course, in other embodiments, the size of the heating element 9 can be larger than that of the heat exchange part 51 in the axial direction of the tube body 41, or the size of the heating element 9 can be slightly smaller than that of the heat exchange part 51; in addition, the heat exchange part 51 and the heating element 9 can be at least partially corresponding to each other in the axial direction of the tube body 41. This is also possible.

[0040] In one embodiment, please continue to refer to Figure 3 For the heating element 9, the heating element 9 may include a resistive heating layer, which may be a resistive heating film. The resistive heating film is in a strip shape and is arranged around the outer peripheral surface of the tube body 41. The resistive heating film is fixed to the outer wall of the tube body 41 by gluing. The resistive heating film can generate heat after being energized and transfer the heat to the heat exchange core 5 located in the heat exchange area 414.

[0041] In another embodiment, the heating element 9 may include an electromagnetic heating layer, which is in the shape of a strip and is arranged around the outer circumference of the tube body 41. The electromagnetic heating layer can be fixed to the outer wall of the tube body 41 by gluing. The electromagnetic heating layer is made of magnetic material. The heating element 9 also includes a coil located outside the electromagnetic heating layer in the radial direction of the tube body 41. When the coil is energized, a changing magnetic field is generated. The electromagnetic heating layer generates heat in the changing magnetic field, thereby transferring heat to the heat exchange core 5 in the heat exchange area 414.

[0042] In some embodiments, for the hollow structure 415, in the axial direction of the tube body 41, the distance between the hollow structure 415 and the heat exchange core 5 is greater than or equal to 1 mm, so that a better heat insulation effect can be achieved through the hollow structure 415. Of course, in other embodiments, if the distance between the hollow structure 415 and the heat exchange core 5 is slightly less than 1 mm, the hollow structure 415 can also achieve a heat insulation effect in the axial direction of the tube body 41.

[0043] In one embodiment, please refer to Figure 2 and Figure 3 The hollow structure 415 penetrates the tube wall in the radial direction of the tube body 41. The hollow structure 415 may include a long hole extending in the circumferential direction of the tube body 41, and may also include a round hole, a square hole or other special-shaped holes. A plurality of hollow structures 415 may be provided, and the plurality of hollow structures 415 may be arranged at intervals in the circumferential direction of the tube body 41. The plurality of hollow structures 415 may be arranged uniformly or unevenly in the circumferential direction of the tube body 41. The plurality of hollow structures 415 may also be arranged at intervals in the axial direction of the tube body 41, so that the heat insulation effect of the hollow structures 415 in the axial direction of the tube body 41 can be improved.

[0044] In one embodiment, the hollow structures 415 in the shape of long holes are evenly spaced around the tube body 41, and the hollow structures 415 are only arranged in one circle around the tube body 41. The connecting ribs between two adjacent hollow structures 415 in the circumferential direction of the tube body 41 should be larger than 0.3 mm, so as to ensure the structural strength of the entire tube body 41; of course, in an embodiment where the thickness of the tube body 41 is thicker, the size of the connecting ribs between two adjacent hollow structures 415 in the circumferential direction can also be slightly smaller than 0.3 mm, or in an embodiment where the hollow structure 415 is a circular hole structure and multiple orifice structures 415 are unevenly arranged, the minimum size of the connecting ribs between two adjacent hollow structures 415 in the circumferential direction can also be smaller than 0.3 mm.

[0045] In one embodiment, the hollow structure 415 is a long hole, and four hollow structures 415 are evenly spaced in the circumferential direction of the tube body 41. The size of the connecting rib between two adjacent hollow structures 415 is greater than 0.3 mm. Figure 4 According to the temperature distribution diagram, after the heating component 4 is powered on for heating for 18s, the temperature of the heating element 9 can reach 371.18°C, the temperature at the center of the heat exchange core 5 can reach 301.75°C, and the temperature at the second opening 412 of the tube body 41 can reach 166.20°C. Compared with the case where the heating component 4 is powered on for 18s without the hollow structure 415 on the tube body 41, the temperature of the heat exchange core 5 is only 245°C. In the present application, a hollow structure 415 is provided on the tube body 41 to isolate the heat transfer of the heating element in the axial direction of the tube body 41, which can effectively lock the heat in the heat exchange area 414, and can effectively increase the temperature of the heat exchange core 5, thereby improving the heat utilization rate of the heating component 9, ensuring that the aerosol generating matrix 10 is fully heated, thereby increasing the aerosol generation amount and generation speed of the aerosol generating matrix 10, and improving the user's taste.

[0046] In addition, the present application sets a hollow structure 415 on the tube body 41 to prevent heat from being transferred to the second opening 412 side of the tube body 41. In this way, the temperature on the side where the second opening 412 end of the tube body 41 is located can be reduced, thereby reducing the high temperature resistance requirements of the components where the second opening 412 end is located, avoiding the plastic parts on the side where the second opening 412 end of the tube body 41 is located in the axial direction from being heated and melted, thereby improving the reliability of the entire aerosol generating device.

[0047] The present application also discloses an aerosol generating device, please refer to Figure 1 and Figure 2 The aerosol generating device includes a device body and a heating component 4 of any of the above embodiments, the device body is formed with an air inlet channel and an air outlet channel, and the internal channel of the tube body 41 in the heating component 4 connects the air inlet channel and the air outlet channel.

[0048] In some embodiments, the device body may include a skeleton 2, a shell 1 installed on the outside of the skeleton 2, an atomizer tube 3 and a connecting tube 6 located in the shell 1 and installed on the skeleton 2, the internal channel of the atomizer tube 3 forms at least a part of the air outlet channel, the internal channel of the connecting tube 6 forms at least a part of the air inlet channel, the skeleton 2 has an air inlet 21 connected to the air inlet channel and an air outlet 22 connected to the air outlet channel, and the tube body 41 of the heating assembly 4 is clamped between the connecting tube 6 and the atomizer tube 3.

[0049] Specifically, please refer to Figure 2 The connecting tube 6 is coaxially arranged with the atomizing tube 3. One end of the connecting tube 6 facing the heating component 4 and one end of the atomizing tube 3 facing the heating component 4 both have a sink structure. Both ends of the tube body 41 in the heating component 4 are respectively located in the sink structure of the atomizing tube 3 and the sink structure of the connecting tube 6. Since the connecting tube 6 and the atomizing tube 3 are both installed on the skeleton 2, the heating component 4 as a whole can be relatively fixed to the skeleton 2 under the clamping action of the connecting tube 6 and the atomizing tube 3.

[0050] When assembling the heating component 4, the heat exchange core 5 can be first embedded in the tube body 41 from the first opening 411 of the tube body 41, so that the end of the tube body 41 abuts against the connecting end 521 on the heat exchange core 5, and then the tube body 41 with the heat exchange core 5 embedded is inserted into the groove structure of the connecting tube 6 and the groove structure of the atomizing tube 3, so that the tube body 41 and the groove bottom wall of the connecting tube 6 are clamped on both sides of the connecting end 521 of the heat exchange core 5, thereby achieving the fixation of the position of the heat exchange core 5 in the tube body 41.

[0051] In one embodiment, please continue to refer to Figure 2The device body may further include a connecting joint 7, the internal channel of the connecting joint 7 forming a part of the air inlet channel, the connecting joint 7 being mounted on the skeleton 2, the internal channel of the connecting joint 7 being communicated with the air inlet 21 of the skeleton 2, the connecting joint 7 being sealed and connected to the connecting tube 6 via a sealing joint 8, the internal channel of the connecting joint 7 being communicated with the internal channel of the connecting tube 6, the connecting tube 6 having a reduced diameter section, the skeleton 2 having a clamping member for clamping and positioning the reduced diameter section, the clamping member being clamped on the radial outer side of the reduced diameter section to achieve fixation of the position of the connecting tube 6 on the skeleton 2.

[0052] In one embodiment, reference may be made to Figure 2 A positioning ring 23 is provided on the skeleton 2 at the air outlet 22. The atomizer tube 3 and the positioning ring 23 are positioned and matched in the circumferential direction and radial direction of the atomizer tube 3. The tube body 41 of the heating component 4 is clamped between the atomizer tube 3 and the connecting tube 6, thereby realizing the fixation of the position of the atomizer tube 3 and the heating component 4 in the skeleton 2.

[0053] Furthermore, in one embodiment, the atomizing tube 3 has an outer tube portion 31 extending toward the connecting tube 6, and the outer tube portion 31 is sealed with the connecting tube 6, so that the heating component 4 is encapsulated between the atomizing tube 3 and the connecting tube 6, which can reduce the heat loss of the heating component 4. The inner wall surface of the outer tube portion 31 is provided with a heat insulation layer 32, which can further reduce the heat loss of the heating component 4.

[0054] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A heating component, characterized in that: include: A tube body, wherein a receiving area and a heat exchange area arranged in the axial direction of the tube body are formed inside the tube body, the receiving area is used to accommodate an aerosol generating matrix, and a hollow structure is provided on the tube wall of the tube body, and the hollow structure corresponds to the receiving area in the axial direction of the tube body; A heat exchange core, at least partly located in the heat exchange area, the heat exchange core having a heat exchange channel penetrating the heat exchange core in the axial direction of the tube body, the heat exchange channel being used to guide the airflow into the receiving area; A heating element is arranged outside the tube body, the heating element corresponds to the heat exchange area in the axial direction of the tube body, and the heating element and the hollow structure are staggered in the axial direction of the tube body to reduce heat transfer to the receiving area.

2. The heating assembly according to claim 1, characterized in that The hollow structure includes long holes extending in the circumferential direction of the tube body.

3. The heating assembly according to claim 1, characterized in that There are multiple hollow structures; The plurality of hollow structures are arranged at intervals in the circumferential direction of the tube body, and / or the plurality of hollow structures are arranged at intervals in the axial direction of the tube body.

4. The heating assembly according to claim 1, characterized in that The distance between the heat exchange core and the hollow structure in the axial direction of the tube body is greater than or equal to 1 mm.

5. The heating assembly according to any one of claims 1 to 4, characterized in that The heat exchange core includes a heat exchange part and a connecting part, wherein the connecting part is connected to the side of the heat exchange part facing away from the receiving area in the axial direction of the tube body, the heat exchange channel is arranged in the heat exchange part, and the connecting part is used to achieve relative fixation of the heat exchange core and the tube body.

6. The heating assembly according to claim 5, characterized in that In the axial direction of the tube body, the heat generating element corresponds to the heat exchanging portion, and the size of the heat generating element is equal to the size of the heat exchanging portion.

7. The heating assembly according to claim 5, characterized in that The connecting portion has a supporting surface facing the tube body in the axial direction of the tube body, and the supporting surface can be supported against the axial end surface of the tube body.

8. The heating assembly according to any one of claims 1 to 4, characterized in that The heating element comprises a resistive heating layer; or, the heating element comprises an electromagnetic heating layer, and the heating element further comprises a coil located outside the electromagnetic heating layer in the radial direction of the tube body.

9. An aerosol generating device, characterized in that: The invention comprises a device body and a heating component according to any one of claims 1 to 8, wherein the device body is formed with an air inlet channel and an air outlet channel, and the heating component is connected with the air inlet channel and the air outlet channel.

10. The aerosol generating device according to claim 9, characterized in that: The device body includes a frame, an atomizing tube and a connecting tube mounted on the frame, the frame has an air inlet connected to the air inlet channel and an air outlet connected to the air outlet channel, at least part of the air inlet channel is formed by the connecting tube, at least part of the air outlet channel is formed by the atomizing tube, and the tube body is clamped between the connecting tube and the atomizing tube.

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