Heating structure and aerosol generating device

Abstract

The utility model discloses a heating structure and an aerosol generating device, and belongs to the field of atomization. In the heating structure, an airflow channel is arranged on the outer side of a heating bin, and a first heat exchange piece is arranged in the airflow channel, so that the first heat exchange piece is used for absorbing heat emitted outwards by the heating bin; the airflow channel is arranged in the heating bin, and the airflow flowing through the airflow channel is preheated, so that the preheated airflow does not absorb excessive heat in the heating bin when entering the aerosol-forming matrix, and the situation that the heating effect of the heating bin on the aerosol-forming matrix is affected due to the fact that the airflow is not preheated is avoided; therefore, the first heat exchange part does not directly absorb the heat of the heating bin, so that the heat emitted outwards by the heating bin is fully utilized to preheat the flowing airflow while the heating bin is not influenced to heat and bake the aerosol-forming substrate.

Description

Technical Field

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

[0002] The aerosol generating device is used to heat an aerosol-forming substrate so that the heated aerosol-forming substrate releases an aerosol. In particular, for a solid aerosol-forming substrate, the solid aerosol-forming substrate is usually placed in a heating chamber and baked and heated to generate an aerosol.

[0003] In the prior art, before the external airflow enters the aerosol-forming matrix located in the heating chamber, it usually has two flow paths. The first flow path is that the external airflow does not flow through the outside of the heating chamber, and the second flow path is that the external airflow at least partially flows through the outside of the heating chamber. With the first flow path, the heat emitted from the heating chamber to the outside is difficult to utilize, resulting in direct loss of this heat, and there is a risk of burns after the shell of the device absorbs this heat. With the second flow path, due to the high flow rate of the airflow, the airflow passing through has limited absorption of the heat emitted from the heating chamber to the outside, and fails to fully utilize this heat. Therefore, the existing aerosol generating devices are not ideal for utilizing the heat emitted from the heating chamber to the outside. Utility Model Content

[0004] The main purpose of the present application is to provide a heating structure and an aerosol generating device to solve the problem that the existing aerosol generating device does not make ideal use of the heat emitted outward from the heating chamber.

[0005] According to one aspect of the present application, the present application provides a heating structure, comprising:

[0006] A main body, wherein the main body structure is formed with a heating chamber and an air flow channel, the air flow channel is located outside the heating chamber, the heating chamber has opposite inlet and outlet ends and a limit end, the air flow channel has an air inlet and an air outlet, the air outlet is away from the inlet and outlet ends and connected to the limit end, and the air inlet is close to the inlet and outlet ends; and

[0007] The first heat exchange element is arranged in the air flow channel, the first heat exchange element is at least partially located outside the heating chamber, and the first heat exchange element does not contact the outer wall of the heating chamber.

[0008] In some other embodiments, the first heat exchange element includes: a tube portion, the tube portion being arranged along the outer circumference of the heating chamber; and

[0009] The heat exchange portion is arranged on the side of the tube portion facing the heating chamber and extends radially inwardly along the tube portion; and / or, the heat exchange portion is arranged on the side of the tube portion facing away from the heating chamber and extends radially outwardly along the tube portion.

[0010] In some other embodiments, there are multiple heat exchange parts, and a preheating channel is formed between two adjacent heat exchange parts.

[0011] In some other embodiments, the first heat exchange member is provided with a preheating channel, and the preheating channel runs through the first heat exchange member.

[0012] In some other embodiments, the main body includes: a first tube body, the first tube body having a receiving chamber inside, the receiving chamber including a first opening and a second opening opposite to each other, the first opening being close to the inlet and outlet end, and the second opening being close to the limit end;

[0013] a second tube body, the second tube body being received in the receiving chamber, the second tube body being a hollow tubular structure, the second tube body forming the heating chamber, the air flow channel being at least partially located between the first tube body and the second tube body, and the first heat exchange element being at least partially located between the first tube body and the second tube body; and

[0014] The base is sealed and connected to one end of the first tube body close to the second opening, and the base is spaced apart from the second tube body so that the air outlet is connected to the limiting end.

[0015] In some other embodiments, the second tube body includes a circumferential wall and a first axial limiting portion, the circumferential wall structure forms the heating chamber, and the first axial limiting portion extends radially outward from a position of the circumferential wall close to the inlet and outlet ends; the inner wall of the first tube body is provided with a connecting piece, and the connecting piece is provided with a limiting hole, and the limiting hole is used for the circumferential wall to pass through and to limit the first axial limiting portion.

[0016] In some other embodiments, the connecting member includes a radial limiting portion, and the radial limiting portion defines the limiting hole.

[0017] In some other embodiments, the limiting hole includes a first hole and a second hole, the first hole is close to the inlet and outlet end, the second hole is far away from the inlet and outlet end, and a limiting surface is formed between the first hole and the second hole, and the first axial limiting portion is limited to the limiting surface.

[0018] In some other embodiments, the main body further includes an extraction member, and the extraction member includes:

[0019] a second axial limiting portion, the second axial limiting portion being provided at one end of the first tube body close to the inlet and outlet ends, the second axial limiting portion being provided with a through hole; and

[0020] An extension portion extends along the edge of the through hole toward the receiving compartment, the extension portion is structured to form a receiving space, the receiving space is connected between the through hole and the inlet and outlet ends, the extension portion is provided with a first air inlet hole, the first air inlet hole connects the receiving space and the air inlet.

[0021] In some other embodiments, the main body further includes: a second heat exchange member, the second heat exchange member is provided with a plurality of heating air channels, the heating air channels being connected to the air outlet and the limiting end; and

[0022] A heating element is used to heat the second heat exchange element.

[0023] In some other embodiments, the peripheral wall structure forms an installation chamber and a heating chamber, the installation chamber is close to the limiting end and away from the inlet and outlet ends, the second heat exchange element and the heating element are both accommodated in the installation chamber, and the heating chamber is close to the inlet and outlet ends.

[0024] On the other hand, the present application also provides an aerosol generating device, which includes a power supply and the above-mentioned heating structure, and the power supply is electrically connected to the heating structure to provide electrical energy to the heating structure.

[0025] In the heating structure of the present application, the air flow channel is set on the outside of the heating chamber and the first heat exchange element is set in the air flow channel, so that the first heat exchange element is used to absorb the heat emitted outward from the heating chamber and preheat the air flow flowing through the air flow channel, so that the preheated air flow will not absorb too much heat in the heating chamber when entering the aerosol-forming matrix, thereby avoiding the influence of the unpreheated air flow on the heating effect of the heating chamber on the aerosol-forming matrix, and by setting the first heat exchange element not in contact with the outer wall of the heating chamber, so that the first heat exchange element will not directly absorb the heat of the heating chamber, thereby fully utilizing the heat emitted outward from the heating chamber to preheat the air flow without affecting the heating and baking of the aerosol-forming matrix by the heating chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 This is a three-dimensional diagram of a heating structure in an embodiment disclosed in this application.

[0028] Figure 2 for Figure 1 Cross-section along AA` direction.

[0029] Figure 3 for Figure 2 Cross-sectional view of an assembled aerosol-forming article.

[0030] Figure 4 This is an exploded view of a heating structure in an embodiment disclosed in this application.

[0031] Figure 5 This is a cross-sectional view of the first heat exchange element disclosed in this application along the AA' direction.

[0032] Figure 6 This application discloses a top view of a first heat exchange element in some embodiments.

[0033] Figure 7 This application discloses a top view of the first heat exchange element in some other embodiments.

[0034] Figure 8 This is a cross-sectional view of the first tube along the AA′ direction in some embodiments disclosed in this application.

[0035] Figure 9 This is a cross-sectional view of the second tube body disclosed in this application along the AA' direction.

[0036] Figure 10 This is a cross-sectional view of the extraction member disclosed in this application along the AA' direction.

[0037] Figure 11 This is a three-dimensional diagram of an aerosol generating device in one embodiment disclosed in this application.

[0038] Figure 12 for Figure 9 Cross-section along AA` direction.

[0039] Figure 13 for Figure 10 Cross-sectional view of an assembled aerosol-forming article. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary, not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0043] See also Figure 1-Figure 4 As shown, the present application provides a heating structure, which includes a main body and a first heat exchange element 60. The main body is formed with a heating chamber 83 and an air flow channel 70, and the air flow channel 70 is located outside the heating chamber 83. The first heat exchange element 60 is disposed within the air flow channel 70, and the first heat exchange element 60 is at least partially located outside the heating chamber 83, and the first heat exchange element 60 does not contact the outer wall of the heating chamber 83.

[0044] Furthermore, the heating chamber 83 has opposite inlet and outlet ends 833 and a limiting end 834. The airflow channel 70 has an air inlet 73 and an air outlet 74. The air outlet 74 is away from the inlet and outlet end 833 and connected to the limiting end 834, and the air inlet 73 is close to the inlet and outlet end 833.

[0045] In this embodiment, the air flow channel 70 is set on the outside of the heating chamber 83, and the first heat exchange element 60 is set in the air flow channel 70, so that the first heat exchange element 60 is used to absorb the heat emitted outward from the heating chamber 83 and preheat the air flow flowing through the air flow channel 70, so that the preheated air flow will not absorb too much heat in the heating chamber 83 when entering the aerosol-forming matrix, thereby avoiding the influence of the unpreheated air flow on the heating effect of the heating chamber 83 on the aerosol-forming matrix, and by arranging the first heat exchange element 60 not to contact the heating chamber 83, so that the first heat exchange element 60 will not directly absorb the heat of the heating chamber 83, so that the heat emitted outward from the heating chamber 83 is fully utilized to preheat the air flow passing through without affecting the heating and baking of the aerosol-forming matrix by the heating chamber 83.

[0046] Furthermore, the first heat exchange element 60 is made of a material with high thermal conductivity, thereby improving the absorption of heat emitted from the heating chamber by the first heat exchange element 60, and at the same time improving the heat exchange efficiency between the first heat exchange element 60 and the air flow in the air flow channel 70, so that the air flow in the air flow channel 70 is preheated more fully.

[0047] Furthermore, the material of the first heat exchange element 60 includes but is not limited to aluminum alloy, aluminum nitride and other high thermal conductivity materials.

[0048] See also Figure 5 and Figure 6 As shown, in some embodiments, the first heat exchange member 60 includes a tube portion 62 and a heat exchange portion 61. The tube portion 62 is disposed along the outer circumference of the heating chamber 83, and the heat exchange portion 61 is disposed on the inner side of the tube portion 62, specifically on the side of the tube portion 62 facing the heating chamber 83, and extends radially inwardly of the tube portion 62. Alternatively, the heat exchange portion 61 is disposed on the outer side of the tube portion 62, specifically on the side of the tube portion 62 facing away from the heating chamber 83, and extends radially outwardly of the tube portion 62.

[0049] Furthermore, in the first embodiment, the heat exchange portion 61 is disposed on a side of the tube portion 62 facing the heating chamber 83 and extends radially inwardly of the tube portion 62 .

[0050] In the second embodiment, the heat exchange portion 61 is disposed on a side of the tube portion 62 facing away from the heating chamber 83 and extends radially outwards of the tube portion 62 .

[0051] In the third embodiment, a heat exchange portion 61 is provided on the side of the tube portion 62 facing the heating chamber 83 and on the side facing away from the heating chamber 83. The heat exchange portion 61 on the side of the tube portion facing the heating chamber 83 extends radially inwardly of the tube portion 62, while the heat exchange portion 61 on the side of the tube portion facing away from the heating chamber 83 extends radially outwardly of the tube portion 62.

[0052] By providing the heat exchange portion 61, the heat exchange area between the first heat exchange element 60 and the airflow in the airflow channel 70 is increased, and the heat exchange efficiency between the first heat exchange element 60 and the airflow in the airflow channel 70 is improved, so that the airflow in the airflow channel 70 is preheated more fully, so that the preheated gas will not absorb too much heat in the heating chamber 83 when entering the aerosol-forming matrix, thereby avoiding the influence of the unpreheated gas on the heating effect of the heating chamber 83 on the aerosol-forming matrix.

[0053] Furthermore, in one embodiment, there are multiple heat exchange sections 61, further increasing the heat exchange area between the first heat exchange element 60 and the airflow in the airflow channel 70. A preheating channel 63 is formed between two adjacent heat exchange sections 61. When the airflow passes through the preheating channel 63, it can more fully absorb the heat from the heat exchange section 61.

[0054] Furthermore, the preheating channel 63 includes, but is not limited to, one or a combination of straight, curved, and zigzag shapes. Preferably, the curved and zigzag shapes have a longer airflow path than the straight one, i.e., a longer preheating path, so that the airflow is preheated for a longer time, thereby allowing the airflow to more fully absorb the heat from the heat exchange portion 61.

[0055] In some embodiments, the preheating channel 63 is a groove-shaped structure, wherein the shape of the groove is not limited, and preferably has a shape with a larger surface area, thereby increasing the heat exchange area between the first heat exchange element 60 and the airflow in the airflow channel 70, and improving the heat exchange efficiency between the first heat exchange element 60 and the airflow in the airflow channel 70, so that the airflow in the airflow channel 70 is preheated more fully, which is more conducive to the subsequent preheated airflow to heat the aerosol-forming matrix, so that the aerosol-forming matrix is ​​heated more fully.

[0056] See also Figure 7 As shown, in some other embodiments, the first heat exchange element 60 is provided with a preheating channel 63, which runs through the first heat exchange element 60. The preheating channel 63 includes but is not limited to one or a combination of straight, curved and broken line types.

[0057] Preferably, the curved and broken-line types have a longer airflow path compared to the straight-cylinder type, that is, a longer preheating path, so that the airflow is preheated for a longer time and is preheated more fully.

[0058] Furthermore, the first heat exchange element 60 includes a top surface, a bottom surface, an inner side surface, and an outer side surface, and the preheating channel 63 passes through any two of the top surface, the bottom surface, the inner side surface, and the outer side surface.

[0059] Preferably, the preheating channel 63 runs through the top and bottom surfaces. There can be one or more preheating channels 63. Multiple preheating channels 63 can increase the heat exchange area between the first heat exchange element 60 and the airflow in the airflow channel 70, thereby improving the heat exchange efficiency.

[0060] Furthermore, the shape of the cross section of the preheating channel 63 along the radial direction of the first heat exchange element 60 includes but is not limited to a regular shape or an irregular shape, wherein the regular shape includes but is not limited to a polygon, a circle, and an ellipse.

[0061] In some embodiments, the first heat exchange element 60 includes a plurality of heat exchange parts 61 , and a preheating channel 63 is formed between two adjacent heat exchange parts 61 .

[0062] Furthermore, the preheating channel 63 includes, but is not limited to, one or more of a straight, curved, and zigzag shape. Preferably, the curved and zigzag shapes have a longer airflow path than the straight type, i.e., a longer preheating path, so that the airflow is preheated for a longer time and is preheated more fully.

[0063] See also Figure 1-Figure 4 、 Figure 8 as well as Figure 9 As shown, the main body includes a first tube body 10, a second tube body 80, and a base 20. The first tube body 10 has a receiving compartment 13 inside. The receiving compartment 13 includes a first opening 11 and a second opening 12 opposite to each other. The first opening 11 is near the inlet and outlet end 833, and the second opening 12 is near the limit end 834.

[0064] The second tube 80 is housed in the housing 13. The second tube 80 is a hollow tubular structure and forms a heating chamber 83. The airflow channel 70 is at least partially located between the first tube 10 and the second tube 80, and the first heat exchange element 60 is at least partially located between the first tube 10 and the second tube 80.

[0065] The base 20 is sealedly connected to one end of the first tube 10 near the second opening 12. In one embodiment, the base 20 is spaced apart from the second tube 80 so that the air outlet 74 communicates with the stopper end 834. By spacing the base 20 and the second tube 80 apart, the suction resistance during inhalation is reduced, providing a better user experience.

[0066] In another embodiment, the base 20 abuts against the second tube body 80, and the second tube body 80 is provided with an air hole, which connects the air outlet 74 and the limiting end 834. The longitudinal dimension of the heating structure 100 is reduced by the setting that the base 20 abuts against the second tube body 80.

[0067] Furthermore, a seal 22 is provided between the base 20 and the first tube body 10 to seal the second opening 12. Furthermore, a groove 21 is provided in one of the base 20 and the first tube body 10 for placing the seal 22, wherein the groove 21 is provided on the side of the base 20 facing the first tube body 10.

[0068] In some embodiments, one end of the first heat exchange element 60 close to the limiting end 832 abuts against the base 20 , thereby supporting the first heat exchange element 60 by the base 20 .

[0069] See also Figure 8 As shown, the second tube body 80 includes a peripheral wall 82 and a first axial limit portion 81. The first axial limit portion 81 extends radially outward from the peripheral wall 82 near the inlet and outlet end 833. The peripheral wall 82 is configured to form a heating chamber 83.

[0070] Furthermore, a connecting piece 14 is provided on the inner wall of the first tube body 10, and a limiting hole 142 is opened on the connecting piece 14. The limiting hole 142 is used for allowing the peripheral wall 82 to pass through and to limit the first axial limiting portion 81, thereby fixing the second tube body 80 in the first tube body 10 and limiting the axial downward displacement of the second tube body 80.

[0071] Furthermore, the connecting member 14 includes a radial limiting portion 15. The radial limiting portion 15 defines a limiting hole 142, which extends toward the second opening 12. The second tube 80 passes through the limiting hole 142. The radial limiting portion 15 limits the second tube 80 in the radial direction. Specifically, the radial limiting portion 15 limits the peripheral wall 82 to restrict the second tube 80 from swinging in the radial direction.

[0072] Furthermore, the limiting hole 142 includes a first hole 1421 and a second hole 1422. The first hole 1421 is close to the inlet and outlet end 833, while the second hole 1422 is away from the inlet and outlet end 833. A limiting surface 16 is formed between the first hole 1421 and the second hole 1422. The first axial limiting portion 81 is limited by the limiting surface 16, wherein the hole wall of the first hole 1421 limits the side wall of the first axial limiting portion 81, while the limiting surface 16 limits the bottom surface of the first axial limiting portion 81. The hole wall of the second hole 1422 limits the side surface of the peripheral wall 82, further limiting the swinging of the second tube body 80 in the radial direction.

[0073] See also Figure 2 、 Figure 3 as well as Figure 10 As shown, the main body further includes an extraction member 30. The extraction member 30 includes a second axial limit portion 32 and an extension portion 31. The second axial limit portion 32 is provided at one end of the first tube body 10 near the inlet and outlet end 833, and a through hole 321 is formed in the second axial limit portion 32.

[0074] The extension portion 31 extends along the edge of the through hole 321 toward the receiving chamber 13 , forming a receiving space 33 connected between the through hole 321 and the inlet / outlet end 833 . The extension portion 31 defines a first air inlet 311 , which connects the receiving space 33 and the air inlet 73 .

[0075] Furthermore, the through hole 321 is used to allow the aerosol-forming article 2000 to pass through, allowing the aerosol-forming article 2000 to pass through the receiving space 33 and be inserted into the heating chamber 83. At least a portion of the extension portion 31 is separated from the aerosol-forming article 2000 by a certain gap, thereby ensuring that a certain gap exists between the first air inlet 311 and the aerosol-forming article 2000. For example, a portion of the extension portion 31 is configured to have a tapered diameter, so that the radial distance between the extension portion 31 and the aerosol-forming article 2000 gradually decreases along the insertion direction of the aerosol-forming article 2000. This ensures that the first air inlet 311 is not blocked by the aerosol-forming article 2000 while ensuring that the extraction member 30 radially limits the aerosol-forming article 2000.

[0076] When the heating structure 100 is in use, the airflow reaches the air inlet 73 along the outside of the aerosol-forming article 2000. In this part of the airflow path, the airflow absorbs the heat emitted outward by the aerosol-forming article 2000, thereby preventing the temperature of the aerosol from being too high and affecting the user experience. At the same time, the airflow is preheated, so that the subsequent airflow can heat the airflow-absorbing aerosol-forming article 2000 more fully.

[0077] Furthermore, one end of the second axial limit portion 32 away from the through hole 321 extends in a direction away from the extension portion 31 , forming a space for installing the clamping member 101 , which is used to clamp the aerosol-forming product 2000 .

[0078] The clamping member 101 includes a ring portion 1011 and a protrusion 1012. The protrusion 1012 is disposed on the inner wall of the ring portion 1011 and abuts against the aerosol-forming article 2000, thereby limiting the position of the aerosol-forming article 2000 and preventing the inserted aerosol-forming article 2000 from exiting the heating chamber 83. A gap is formed between the inserted aerosol-forming article 2000 and the ring portion 1011, allowing external air to enter the receiving space 33 through the gap and then flow into the first air inlet 311.

[0079] See also Figure 2As shown, the extension portion 31 abuts against the upper surface of the first axial limiting portion 81 to limit the second tube body 80 from axially upward displacement. Combined with the aforementioned first hole 1421, second hole 1422 and limiting surface 16, the first axial limiting portion 81 is limited so that the first axial limiting portion 81 is clamped between the extension portion 31 and the limiting surface 16, further fixing the second tube body 80 in the first tube body 10.

[0080] See also Figure 2 and Figure 3 As shown, the airflow channel 70 includes a first sub-airway 71 and a second sub-airway 72 that are interconnected. The first tube body 10 and the second tube body 80 are spaced apart to form the first sub-airway 71. The first tube body 10 and the extension portion 31 are spaced apart to form the second sub-airway 72.

[0081] Furthermore, the connecting member 14 defines a second air inlet hole 141 , which communicates with the first sub-air channel 71 and the second sub-air channel 72 .

[0082] See also Figure 2-Figure 4 As shown, the main body also includes a second heat exchange element 50 and a heating element 40. The second heat exchange element 50 is provided with a plurality of heating air channels 51, which connect the air outlet 74 and the limit end 834. The heating element 40 is used to heat the second heat exchange element 50, thereby further heating the airflow flowing through the heating air channels 51.

[0083] In the first embodiment, the heating element 40 is disposed around the second heat exchange element 50 .

[0084] In the second embodiment, the heating element 40 is disposed inside the second heat exchange element 50 .

[0085] In the third embodiment, there are multiple heating elements 40, wherein some heating elements 40 are arranged around the second heat exchange element 50, and another part of the heating elements 40 are arranged inside the second heat exchange element 50, so that the second heat exchange element 50 can heat the airflow in the heating air duct 51 more fully.

[0086] Furthermore, the preheating channel 63 includes, but is not limited to, one or more of a straight, curved, and zigzag type. The curved and zigzag types have a longer airflow path than the straight type, i.e., a longer preheating path, so that the airflow is preheated for a longer time and is preheated more fully.

[0087] The peripheral wall 82 is structured to form an installation chamber 84 and a heating chamber 83. The installation chamber 84 is close to the limiting end 834 and away from the inlet and outlet end 833. The second heat exchange element 50 and the heating element 40 are both accommodated in the installation chamber 84.

[0088] Furthermore, the second heat exchange element 50 is connected to the heat generating element 40 via a ceramic adhesive 90 . Specifically, the second heat exchange element 50 is connected to the peripheral wall 82 via a ceramic adhesive 90 .

[0089] The heating chamber 83 is located near the inlet and outlet end 833 and is used to accommodate the aerosol-forming article 2000. Furthermore, the peripheral wall 82 includes a receiving portion 821 and a mounting portion 822. The receiving portion 821 is located near the first opening 11, and the mounting portion 822 is located near the second opening 12. The receiving portion 821 forms the heating chamber 83, and the mounting portion 822 forms the mounting chamber 84.

[0090] A third axial stopper 823 is provided at one end of the peripheral wall 82 having a stopper end 834. When the ceramic adhesive 90, the second heat exchange component 50, and the heating element 40 are not installed in the installation compartment 84, the third axial stopper 823 extends axially downward, specifically in a direction away from the inlet and outlet end 833. After the ceramic component 90, the second heat exchange component 50, and the heating element 40 are installed in the installation compartment 84, the third axial stopper 823 is bent radially inward, thereby being disposed radially along the peripheral wall 82 to limit the downward axial displacement of the ceramic adhesive 90, the second heat exchange component 50, and the heating element 40.

[0091] See also Figure 2 、 Figure 3 、 Figure 12 as well as Figure 13 As shown, the airflow path in the embodiment of the present invention is as follows:

[0092] The external airflow flows along the outer side of the aerosol-forming product 2000 toward the inside of the heating structure 100, passes through the gap between the clamping member 101 and the aerosol-forming product 2000, and enters the receiving space 33. During this process, the airflow absorbs the heat of the portion of the aerosol-forming product 2000 inserted outside the heating chamber 83. While ensuring that the heating chamber 83 does not affect the heating of the aerosol-forming product 2000 and the generation of aerosol, the temperature of the portion of the aerosol-forming product 2000 inserted outside the heating chamber 83 is reduced to prevent the user from being scalded by excessive temperature, and the airflow is preheated to improve the heating efficiency of the subsequent airflow preheating in the airflow channel 70. The air flow enters the air flow channel 70 through the first air inlet hole 311, and specifically flows through the air inlet port 73 into the first sub-air channel 71, and then flows through the second air inlet hole 141 into the second sub-air channel 72. The air flow flows into the preheating channel 63 in the second sub-air channel 72, and is preheated by the first heat exchange component 60 when flowing into the preheating channel 63. The preheated air flow flows through the air outlet 74 into the heating air channel 51 to be heated again by the second heat exchange component 50, and the heated air flow enters the heating chamber 83. The air flow entering the heating chamber 83 heats the aerosol-forming product 2000 located in the heating chamber 83 to generate an aerosol. The aerosol flows along the heating chamber 83 toward the receiving space 33, and flows into the user's mouth through the aerosol-forming product 2000.

[0093] See also Figure 2 、 Figure 3 、 Figure 12 as well as Figure 13 As shown, the assembly process of the heating structure is as follows:

[0094] Place the first heat exchanger 60 into the receiving chamber 13 of the first tube 10 through the second opening 12. Install the seal 22 into the groove 21 on the base 20. Install the base 20, with the seal 22 installed, into the second opening 12 of the first tube 10 to seal the second opening 12. Assemble the heating element 40, the second heat exchanger 50, and the ceramic adhesive 90 to form a first heating assembly. Install the assembled first heating assembly into the mounting chamber 84 of the second tube 80 to form a second heating assembly. Bend the third axial stopper 823 to secure the first heating assembly. Place the second heating assembly into the receiving compartment 13 of the first tube body 10 from the first opening 11, and the second heating assembly passes through the limiting hole 142 opened in the connecting piece 14, specifically, the peripheral wall 82 passes through the limiting hole 142, and the hole wall of the first hole 1421 in the limiting hole 142 limits the side wall of the first axial limiting portion 81. At the same time, the limiting surface 16 between the first hole 1421 and the second hole 1422 limits the bottom surface of the first axial limiting portion 81, and the hole wall of the second hole 1422 in the limiting hole 142 limits the side of the peripheral wall 82, thereby fixing the first axial limiting portion 81, and then fixing the second heating assembly, and the radial limiting portion 15 limits the second tube body 80, specifically limits the peripheral wall 82, to limit the swing of the second tube body 80 along the radial direction. Install the extraction member 30 to the first opening 11 of the first tube body 10. Specifically, insert the extension portion 31 into the receiving compartment 13 from the first opening 11, and abut the second axial limiting portion 32 against the end of the first tube body 10 close to the first opening 11. Then, install the clamping member 101 into the extraction member 30 to complete the assembly of the heating structure.

[0095] See also Figure 11-13 As shown, on the other hand, the embodiment of the present invention further provides an aerosol generating device 1000, which includes the above-mentioned heating structure 100. Therefore, the aerosol generating device has all the technical effects of the above-mentioned heating structure 100. Since the technical effects of the heating structure 100 have been described in detail above, they will not be repeated here.

[0096] Furthermore, the aerosol generating device further includes a power supply 300. The power supply 300 is electrically connected to the heating structure 100 to provide electrical energy to the heating structure 100, so that the heating structure 100 heats the aerosol-forming article 2000 inserted into the heating chamber 83, thereby generating aerosol.

[0097] Furthermore, the aerosol generating device 1000 further includes a housing 200 . The housing 200 has a receiving cavity 210 , and the receiving cavity 210 is used to receive the power supply 300 and the heating structure 100 .

[0098] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0099] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0100] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A heating structure, characterized in that: include: A main body, wherein the main body structure is formed with a heating chamber (83) and an air flow channel (70), the air flow channel (70) is located outside the heating chamber (83), the heating chamber (83) has opposite inlet and outlet ends (833) and a limit end (834), the air flow channel (70) has an air inlet (73) and an air outlet (74), the air outlet (74) is away from the inlet and outlet end (833) and connected to the limit end (834), and the air inlet (73) is close to the inlet and outlet end (833); and A first heat exchange element (60), wherein the first heat exchange element (60) is disposed in the air flow channel (70), the first heat exchange element (60) is at least partially located outside the heating chamber (83), and the first heat exchange element (60) does not contact the outer wall of the heating chamber (83).

2. The heating structure according to claim 1, characterized in that: The first heat exchange element (60) comprises: a pipe portion (62), the pipe portion (62) being arranged along the outer periphery of the heating chamber (83); and a heat exchange portion (61), the heat exchange portion (61) being arranged on a side of the tube portion (62) facing the heating chamber (83) and extending radially inwardly along the tube portion (62); And / or, the heat exchange portion (61) is arranged on a side of the tube portion (62) facing away from the heating chamber (83) and extends radially outwards along the tube portion (62).

3. The heating structure according to claim 2, characterized in that: There are a plurality of heat exchange parts (61), and a preheating channel (63) is formed between two adjacent heat exchange parts (61).

4. The heating structure according to claim 1, wherein: The first heat exchange component (60) is provided with a preheating channel (63), and the preheating channel (63) runs through the first heat exchange component (60).

5. The heating structure according to claim 1, wherein: The subject includes: A first tube body (10), wherein the first tube body (10) has a receiving chamber (13) inside, and the receiving chamber (13) includes a first opening (11) and a second opening (12) opposite to each other, wherein the first opening (11) is close to the inlet and outlet end (833), and the second opening (12) is close to the limit end (834); a second tube (80), the second tube (80) being housed in the housing chamber (13), the second tube (80) being a hollow tubular structure, the second tube (80) forming the heating chamber (83), the air flow channel (70) being at least partially located between the first tube (10) and the second tube (80), and the first heat exchange element (60) being at least partially located between the first tube (10) and the second tube (80); and A base (20) is sealed and connected to one end of the first tube (10) close to the second opening (12), and the base (20) is spaced apart from the second tube (80) so that the air outlet (74) is connected to the limit end (834).

6. The heating structure according to claim 5, characterized in that: The second tube body (80) includes a peripheral wall (82) and a first axial limiting portion (81), wherein the peripheral wall (82) forms the heating chamber (83), and the first axial limiting portion (81) extends radially outward from a position of the peripheral wall (82) close to the inlet and outlet end (833); The inner wall of the first tube body (10) is provided with a connecting piece (14), and the connecting piece (14) is provided with a limiting hole (142). The limiting hole (142) is used for allowing the peripheral wall (82) to pass through and to limit the first axial limiting portion (81).

7. The heating structure according to claim 6, characterized in that: The connecting member (14) includes a radial limiting portion (15), and the radial limiting portion (15) defines and forms the limiting hole (142).

8. The heating structure according to claim 7, characterized in that: The limiting hole (142) includes a first hole (1421) and a second hole (1422), wherein the first hole (1421) is close to the inlet and outlet end (833), and the second hole (1422) is far away from the inlet and outlet end (833), and a limiting surface (16) is formed between the first hole (1421) and the second hole (1422), and the first axial limiting portion (81) is limited to the limiting surface (16).

9. The heating structure according to claim 8, characterized in that: The main body further comprises an extraction member (30), wherein the extraction member (30) comprises: a second axial limiting portion (32), the second axial limiting portion (32) being provided at one end of the first tube body (10) close to the inlet and outlet end (833), the second axial limiting portion (32) being provided with a through hole (321); and An extension portion (31), the extension portion (31) extends along the edge of the through hole (321) toward the receiving chamber (13), the extension portion (31) is structured to form a receiving space (33), the receiving space (33) is connected between the through hole (321) and the inlet and outlet end (833), and the extension portion (31) is provided with a first air inlet hole (311), the first air inlet hole (311) being connected to the receiving space (33) and the air inlet (73).

10. The heating structure according to claim 6, characterized in that: The subject also includes: A second heat exchange element (50), wherein the second heat exchange element (50) is provided with a plurality of heating air passages (51), wherein the heating air passages (51) are connected to the air outlet (74) and the limiting end (834); and A heating element (40), wherein the heating element (40) is used to heat the second heat exchange element (50).

11. The heating structure according to claim 10, characterized in that: The peripheral wall (82) is constructed to form an installation chamber (84) and a heating chamber (83); the installation chamber (84) is close to the limiting end (834) and away from the inlet and outlet end (833); the second heat exchange component (50) and the heating component (40) are both accommodated in the installation chamber (84); and the heating chamber (83) is close to the inlet and outlet end (833).

12. An aerosol generating device, characterized in that: The heating structure (100) comprises a power source (300) and the heating structure (100) according to any one of claims 1 to 11, wherein the power source (300) is electrically connected to the heating structure (100) to provide electrical energy to the heating structure (100).

Images