Heating structure and heating non-combustion device

Abstract

The utility model discloses a heating structure and a heating non-combustion device. Belongs to the technical field of aerosol generating devices. According to the heating structure, the first airflow channel and the second airflow channel are formed in the heating structure, so that when the heating structure emits heat, gas flowing through the first airflow channel and the second airflow channel can be heated, and hot airflow used for heating and baking the aerosol generating substrate is formed; the flowing directions of the gas in the first gas flow channel and the second gas flow channel are controlled to be opposite, so that the heated stroke of the gas in the first gas flow channel and the second gas flow channel is increased, the gas is fully heated to form hot gas flow, and a gas outlet hole of the hot gas flow corresponds to the substrate section and is far away from the cooling section; meanwhile, the heating structure is directly inserted into the substrate section, so that the heating structure can be in contact with the substrate section and heat and bake the substrate section.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generating devices, and more particularly, to a heating structure and a heat-not-burn device. Background Art

[0002] A heat-not-burn device is an apparatus that can heat and bake an aerosol generating substrate to generate an aerosol.

[0003] For a heating structure that inserts into the substrate section to heat the substrate, the existing heating structure is to set a rod-shaped or sheet-shaped heating element into a hollow structure, and set air holes on the heating element to connect the hollow structure and the accommodation space of the aerosol generating substrate. While the heating element conducts heat in contact with the substrate, the air flow flowing through the hollow structure will also be heated and pass through the air holes into the substrate section to bake the substrate.

[0004] Since the length of the heating element inserted into the substrate section is limited, and there is a phenomenon that the air flow entering the substrate section from the air holes near the substrate section and far from the cooling section is not fully heated, and the air flow entering the substrate section from the air holes near the cooling section has a limited travel in the substrate section and cannot fully bake the entire substrate section. Therefore, in the existing heating structure, the hot air flow formed by heating the air cannot effectively bake the substrate. Summary of the Utility Model

[0005] The main object of the present application is to provide a heating structure and a heat-not-burn device to solve the problem that the hot air flow in the prior art cannot effectively bake the substrate.

[0006] According to one aspect of the present application, a heating structure is provided for inserting into a substrate section of an aerosol generating substrate. The internal structure of the heating structure forms a first air flow channel and a second air flow channel that are interconnected. The first air flow channel has an air inlet hole, and the second air flow channel has an air outlet hole. Gas enters the first air flow channel from the air inlet hole, flows through the second air flow channel, and enters the substrate section from the air outlet hole. Among them, the flow direction of the gas in the first air flow channel is opposite to the flow direction of the gas in the second air flow channel, and the heating structure is configured to heat the gas flowing through the first air flow channel and the second air flow channel, and heat the substrate section.

[0007] Further, the heating structure includes a first section and a second section. The first section is for inserting into the aerosol generating substrate, and the second section is for fixing the heating structure. The air inlet hole is located in the second section, the air outlet hole is located in the first section, and at least one of the air outlet holes is close to the second section.

[0008] Further, the heating structure includes:

[0009] A first heating element, the first heating element having a hollow channel; and

[0010] A second heating element, the second heating element being disposed within the hollow channel and separating the hollow channel into the first air flow channel and the second air flow channel along the direction in which the heating structure is inserted into the aerosol generating substrate.

[0011] Further, the first heating element is a tubular structure with one end open;

[0012] The second heating element is hollow and has both ends open to form the first air flow channel, and an outer wall of the second heating element is spaced apart from an inner wall of the first heating element to form the second air flow channel.

[0013] Further, a first end of the second heating element corresponding to the air inlet hole is hermetically connected to the open end of the first heating element, and a second end of the second heating element away from the air inlet hole extends beyond the air outlet hole along the direction in which the heating structure is inserted into the aerosol generating substrate.

[0014] Further, the first heating element and / or the second heating element is resistive heating and / or electromagnetic induction heating.

[0015] Further, the heating structure includes a third heating element disposed within the first air flow channel, and / or includes a fourth heating element disposed within the second air flow channel, and the third heating element and / or the fourth heating element generates heat to heat the first heating element and the second heating element.

[0016] Further, the third heating element and / or the fourth heating element is resistive heating and / or electromagnetic induction heating.

[0017] Further, the third heating element is received within the first air flow channel corresponding to the first section, and / or the fourth heating element is received within the second air flow channel corresponding to the first section; or

[0018] The third heating element is partially received within the first air flow channel corresponding to the second section, and / or the fourth heating element is partially received within the second air flow channel corresponding to the second section.

[0019] Further, the fourth heating element is limited by the first heating element and the second heating element to be received within the second air flow channel.

[0020] On the other hand, the present application also provides a heat-not-burn device, which includes a housing, a power supply component, and the heating structure described in any one of the above. The housing is configured to form a receiving chamber for receiving the aerosol-generating substrate. The heating structure is disposed inside the housing and partially extends into the receiving chamber. The power supply component is used to supply power to the heating structure.

[0021] In the heating structure of the present application, by forming the first air flow channel and the second air flow channel on the heating structure, when the heating structure generates heat, the gas flowing through the first air flow channel and the second air flow channel can be heated to form a hot air flow for heating and baking the aerosol-generating substrate. By controlling the gas to flow in opposite directions in the first air flow channel and the second air flow channel, the travel of the gas being heated in the first air flow channel and the second air flow channel is increased, so that the gas is fully heated to form a hot air flow, and the air outlet of the hot air flow corresponds to the matrix section and is away from the cooling section, thereby effectively baking the matrix section. At the same time, the heating structure is directly inserted into the matrix section, so it can contact the matrix section and heat and bake the matrix section. Description of the Drawings

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0023] Figure 1 It is a schematic diagram of the heating structure in an embodiment disclosed in the present application.

[0024] Figure 2 It is a cross-sectional view of the heating structure in an embodiment disclosed in the present application.

[0025] Figure 3 It is a cross-sectional view of the first heating element in an embodiment disclosed in the present application.

[0026] Figure 4 It is a cross-sectional view of the second heating element in an embodiment disclosed in the present application.

[0027] Figure 5 It is a schematic diagram of the first heating element in an embodiment disclosed in the present application.

[0028] Figure 6 It is a schematic diagram of the first heating element with side edges in an embodiment disclosed in the present application.

[0029] Figure 7 It is a cross-sectional view of the heating structure with a fourth heating element in an embodiment disclosed in the present application.

[0030] Figure 8 A cross-sectional view of a heating structure in an embodiment disclosed in the present application.

[0031] Figure 9 A cross-sectional view of a heating structure with a third heating element in an embodiment disclosed in the present application.

[0032] Figure 10 A cross-sectional view of a heating structure with a third heating element and a fourth heating element in an embodiment disclosed in the present application.

[0033] Figure 11 A cross-sectional view of a heating structure in an embodiment disclosed in the present application.

[0034] Figure 12 A schematic diagram of a heat-not-burn device with an aerosol-generating substrate inserted therein in an embodiment disclosed in the present application.

[0035] Figure 13 A cross-sectional view of a heat-not-burn device with an aerosol-generating substrate inserted therein in an embodiment disclosed in the present application.

[0036] Figure 14 A cross-sectional view of a heat-not-burn device in an embodiment disclosed in the present application.

[0037] Among them, the above-mentioned drawings include the following reference numerals:

[0038] The first air flow channel 10, the air inlet hole 11, the second air flow channel 20, the air outlet hole 21, the first heating element 30, the hollow channel 31, the closed end 32, the open end 33, the side edge 34, the second heating element 40, the first opening 41, the second opening 42, the first end 43, the second end 44, the coil 50, the third heating element 60, the fourth heating element 70, the mounting seat 80, the air inlet channel 81, the aerosol-generating substrate 200, the substrate section 210, the cooling section 220, the housing 310, the receiving chamber 311, the power supply assembly 320. Detailed implementation manners

[0039] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0040] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, 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.

[0041] Unless otherwise specifically stated, the relative arrangements of components 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 the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0042] Please refer to Figures 1-14 As shown, according to one aspect of the present application, the present application provides a heating structure. The heating structure is for inserting into the matrix section 210 of the aerosol generation matrix 200 to contact the matrix section 210 and heat-bake it.

[0043] Furthermore, an internally formed structure of the heating structure has a first air flow channel 10 and a second air flow channel 20 that communicate with each other. The heating structure is configured to heat the gas flowing through the first air flow channel 10 and the second air flow channel 20, so that the gas flowing through the first air flow channel 10 and the second air flow channel 20 is heated to form a hot air flow that can effectively bake the matrix section 210.

[0044] Furthermore, the first air flow channel 10 has an air inlet hole 11, and the second air flow channel 20 has an air outlet hole 21. Gas enters the first air flow channel 10 from the air inlet hole 11, flows through the second air flow channel 20, and then enters the matrix section 210 from the air outlet hole 21. And the flow direction of the gas in the first air flow channel 10 is opposite to the flow direction of the gas in the second air flow channel 20.

[0045] In this embodiment, since the travel of the gas heated in the first air flow channel 10 and the second air flow channel 20 increases, the gas is fully heated to form a hot air flow. And the air outlet hole 21 of the hot air flow corresponds to the matrix section 210 and is far from the cooling section 220, so that the hot air flow enters the matrix section 210 from the side of the matrix section 210 far from the cooling section 220, and thus the matrix section 210 can be effectively baked.

[0046] Further, since the heating structure is directly inserted into the matrix section 210, the heating structure can also be in direct contact with the matrix section 210 and heat-bake the matrix section 210. Thereby, contact heating-baking and hot air flow heating-baking of the matrix section 210 are realized, and further, the matrix section 210 can generate aerosol more quickly.

[0047] Further, the heating structure includes a first section and a second section. The first section is used to be inserted into the matrix section 210 for contact heating-baking of the matrix section 210. The second section is used to fix the heating structure to ensure that the first section can be stably inserted into the matrix section 210.

[0048] Further, the air inlet hole 11 is located in the second section, and the air outlet hole 21 is located in the first section. Thereby, the length of the first air flow channel 10 along the direction in which the heating structure is inserted into the aerosol generating matrix 200 is greater than the length of the second air flow channel 20, and thereby the movement stroke of the air flow during the heating process in the heating structure is increased.

[0049] Please refer to Figure 5 As shown, the first section is provided with a plurality of the air outlet holes 21, and at least one of the air outlet holes 21 is close to the second section. Thereby, the hot air flow entering the matrix section 210 through the air outlet hole 21 can heat-bake the whole matrix section 210.

[0050] In one embodiment, the plurality of air outlet holes 21 are arranged in the first section along the direction in which the heating structure is inserted into the aerosol generating matrix 200. Preferably, a plurality of the air outlet holes 21 are also provided on the circumferential side of the first section.

[0051] Further, the heating structure includes a first heating element 30 and a second heating element 40. The first heating element 30 has a hollow channel 31, and the second heating element 40 is arranged in the hollow channel 31 and divides the hollow channel 31 into the first air flow channel 10 and the second air flow channel 20 along the direction in which the heating structure is inserted into the aerosol generating matrix.

[0052] In the first embodiment, the first heating element 30 is a tubular structure with one end open. The second heating element 40 is hollow and has both ends open to construct the first air flow channel 10, and the outer wall of the second heating element 40 is spaced from the inner wall of the first heating element 30 to construct the second air flow channel 20.

[0053] Furthermore, the second heating element 40 includes a first opening 41 and a second opening 42 which are oppositely arranged. The first opening 41 corresponds to the air inlet hole 11, and the second opening 42 is close to the closed end 32 of the first heating element 30. Gas enters the first air flow channel 10 from the first opening 41, enters the second air flow channel 20 from the second opening 42, and enters the interior of the matrix section 210 from the air outlet hole 21.

[0054] Further, a first end 43 of the second heating element 40 corresponding to the air inlet hole 11 is hermetically connected to the open end 33 of the first heating element 30, thereby blocking one end of the second air flow channel 20 close to the air inlet hole 11, so that the hot air flow flowing through the second air flow channel 20 can only enter the matrix section 210 from the air outlet hole 21.

[0055] Furthermore, a second end 44 of the second heating element 40 far from the air inlet hole 11 extends beyond the air outlet hole 21 along the direction in which the heating structure is inserted into the aerosol generating matrix. So that the flow directions of the gas flowing through the first air flow channel 10 and the second air flow channel 20 are opposite, thereby enabling the flowing gas to have a longer heating travel.

[0056] Further, after the second end 44 of the second heating element 40 extends beyond the air outlet hole 21, it extends towards the direction close to the closed end 32, so as to further extend the travel of the air flow heated in the first air flow channel 10 and the second air flow channel 20.

[0057] Further, the second end 44 is spaced from the closed end 32 to communicate the first air flow channel 10 and the second air flow channel 20. Alternatively, the second end 44 is connected to the closed end 32, and a through hole is formed, and the through hole communicates the first air flow channel 10 and the second air flow channel 20.

[0058] Further, in one embodiment, the closed end 32 of the first heating element 30 is conical. So that the first heating element 30 can be smoothly inserted into the matrix section 210 of the aerosol generating matrix 200.

[0059] Please refer to Figure 6 As shown, preferably, a plurality of side edges 34 are further formed on the outer side wall of the first heating element 30 corresponding to the first section. The plurality of side edges 34 respectively extend along the direction in which the heating structure is inserted into the aerosol generating matrix 200 and are arranged on the circumferential side of the outer side wall of the first heating element 30. Thus, when the first heating element 30 is inserted into the matrix section 210, the contact area between the first heating element 30 and the matrix section 210 can be increased, thereby improving the efficiency of contact heating.

[0060] Please refer to Figure 7 as shown Figure 7 The dashed line with an arrow therein shows the flow path of the gas in the first gas flow channel 10 and in the second gas flow channel 20.

[0061] In the second embodiment, the first heating element 30 has an elongated plate-like structure, and one end of the first heating element 30 is open and configured to form the hollow channel 31. The second heating element 40 is hollow and has both ends open to form the first gas flow channel 10, and the outer wall of the second heating element 40 is spaced from the inner wall of the first heating element 30 to form the second gas flow channel 20.

[0062] Please refer to Figure 8 as shown Figure 8 The dashed line with an arrow therein shows the flow path of the gas in the first gas flow channel 10 and in the second gas flow channel 20.

[0063] In the third embodiment, the first heating element 30 has a hollow channel 31 with one end open, and the second heating element 40 is disposed inside the hollow channel 31 and divides the hollow channel 31 to form the first gas flow channel 10 and the second gas flow channel 20.

[0064] Furthermore, the first gas flow channel 10 and the second gas flow channel 20 are oppositely disposed along the direction in which the heating structure is inserted into the aerosol generating substrate 200, the open end 33 of the first heating element 30 is the intake hole 11 of the first gas flow channel 10, and the first gas flow channel 10 and the second gas flow channel 20 communicate with each other near the closed end 32 of the first heating element 30.

[0065] Furthermore, in the first embodiment, the first heating element 30 and / or the second heating element 40 generates heat to directly heat the gas flowing through the first gas flow channel 10 and the second gas flow channel 20 to form a hot air flow, thereby improving the efficiency of heating the gas to form the hot air flow.

[0066] In one embodiment, the first heating element 30 can generate heat to heat the second heating element 40, the matrix section 210, and the gas flowing through the first gas flow channel 10 and the second gas flow channel 20. Alternatively, the second heating element 40 can generate heat to heat the first heating element 30, the matrix section 210, and the gas flowing through the first gas flow channel 10 and the second gas flow channel 20.

[0067] Furthermore, the first heating element 30 or the second heating element 40 can generate heat by resistance when powered on; alternatively, the first heating element 30 or the second heating element 40 can generate heat by electromagnetic induction under the action of the energized coil 50; or, while the first heating element 30 or the second heating element 40 generates heat by resistance when powered on, it can also generate heat by electromagnetic induction under the action of the energized coil 50, so that the heating efficiency of the first heating element 30 or the second heating element 40 is higher, thereby heating and baking the substrate section 210 to make the substrate section 210 generate aerosol at a faster speed.

[0068] In another embodiment, both the first heating element 30 and the second heating element 40 can generate heat to heat the substrate section 210 and the gas flowing through the first air flow channel 10 and the second air flow channel 20.

[0069] Furthermore, one of the first heating element 30 and the second heating element 40 can generate heat by resistance when powered on, and the other of the first heating element 30 and the second heating element 40 can generate heat by electromagnetic induction under the action of the energized coil 50; or, the first heating element 30 and the second heating element 40 respectively generate heat by resistance when powered on; or, the first heating element 30 and the second heating element 40 respectively generate heat by electromagnetic induction under the action of the energized coil 50; or, the first heating element 30 and the second heating element 40 can generate heat by resistance when powered on, and the first heating element 30 and the second heating element 40 can also generate heat by electromagnetic induction under the action of the energized coil 50; or, the first heating element 30 and the second heating element 40 can generate heat by resistance when powered on, and either the first heating element 30 or the second heating element 40 can also generate heat by electromagnetic induction under the action of the energized coil 50.

[0070] In the second embodiment, please refer to Figures 9-10 As shown, the first heating element 30 and the second heating element 40 cannot generate heat by resistance or electromagnetic induction. The heating structure includes a third heating element 60 and / or a fourth heating element 70, and the third heating element 60 and / or the fourth heating element 70 can generate heat and are used to heat the first heating element 30, the second heating element 40, the substrate section 210, and the gas flowing through the first air flow channel 10 and the second air flow channel 20.

[0071] Furthermore, the first heating element 30 and the second heating element 40 can be made of ceramic materials.

[0072] In the first embodiment, the heating structure includes the third heating element 60 disposed in the first air flow channel 10. The third heating element 60 generates heat to heat the first heating element 30, the second heating element 40, and the gas flowing through the first air flow channel 10 and the second air flow channel 20, and the first heating element 30 absorbs the heat emitted by the third heating element 60 to heat the matrix section 210 and the gas flowing through the second air flow channel 20.

[0073] Furthermore, the third heating element 60 can generate resistance heat in an energized state; or, the third heating element 60 can generate electromagnetic induction heat under the action of energizing the coil 50; or, while the third heating element 60 generates resistance heat in an energized state, it can also generate electromagnetic induction heat under the action of energizing the coil 50, so that the heating efficiency of the third heating element 60 is higher.

[0074] Further, the third heating element 60 is received in the first air flow channel 10 corresponding to the first section, and is used to directly heat the second heating element 40 and the gas flowing through the first air flow channel 10. The first heating element 30 absorbs the heat emitted by the third heating element 60 to heat the matrix section 210 and the gas flowing through the second air flow channel 20.

[0075] Preferably, the third heating element 60 is partially received in the first air flow channel 10 corresponding to the second section, thereby increasing the direct heating stroke of the third heating element 60 on the gas flowing through the first air flow channel 10, so that the gas can be heated to a high temperature when flowing through the first air flow channel 10.

[0076] In the second embodiment, the heating structure includes the fourth heating element 70 disposed in the second air flow channel 20. The fourth heating element 70 generates heat to heat the first heating element 30, the second heating element 40, and the gas flowing through the first air flow channel 10 and the second air flow channel 20, and the first heating element 30 absorbs the heat emitted by the fourth heating element 70 to heat the matrix section 210 and the gas flowing through the second air flow channel 20.

[0077] Furthermore, the fourth heating element 70 can generate resistance heat in an energized state; or, the fourth heating element 70 can generate electromagnetic induction heat under the action of energizing the coil 50; or, while the fourth heating element 70 generates resistance heat in an energized state, it can also generate electromagnetic induction heat under the action of energizing the coil 50, so that the heating efficiency of the fourth heating element 70 is higher.

[0078] Further, the fourth heating element 70 is received in the second air flow channel 20 corresponding to the first section, and is used to directly heat the first heating element 30, the second heating element 40, and the gas flowing through the second air flow channel 20. The first heating element 30 absorbs the heat emitted by the fourth heating element 70 to heat the matrix section 210, and the second heating element 40 absorbs the heat emitted by the fourth heating element 70 to heat the gas flowing through the first air flow channel 10.

[0079] Preferably, the fourth heating element 70 is partially received in the second air flow channel 20 corresponding to the second section, so as to increase the area of direct heating of the fourth heating element 70 on the second heating element 40, and further increase the heating travel of the second heating element 40 on the gas flowing through the first air flow channel 10, so that the gas can be heated to a higher temperature when flowing through the first air flow channel 10.

[0080] In the third embodiment, the heating structure includes the third heating element 60 disposed in the first air flow channel 10 and the fourth heating element 70 disposed in the second air flow channel 20. The third heating element 60 and the fourth heating element 70 generate heat to heat the first heating element 30, the second heating element 40, and the gas flowing through the first air flow channel 10 and the second air flow channel 20, and the first heating element 30 absorbs the heat emitted by the third heating element 60 and the fourth heating element 70 to heat the matrix section 210.

[0081] Furthermore, the third heating element 60 is received in the first air flow channel 10 corresponding to the first section, and the fourth heating element 70 is received in the second air flow channel 20 corresponding to the first section.

[0082] Preferably, the third heating element 60 is partially received in the first air flow channel 10 corresponding to the second section, and the fourth heating element 70 is partially received in the second air flow channel 20 corresponding to the second section.

[0083] Further, the fourth heating element 70 can be a heating structure such as a heating net, a heating wire, or a heating sheet that can perform resistance heating or electromagnetic induction heating.

[0084] Further, the fourth heating element 70 is limited by the first heating element 30 and the second heating element 40 and is received in the second air flow channel 20. Thus, the second air flow channel 20 is cleverly used to receive the fourth heating element 70, and a dedicated installation structure for installing the fourth heating element 70 is avoided. Furthermore, while enabling the rapid assembly of the fourth heating element 70, the gas flowing through the second air flow channel 20 can directly contact the fourth heating element 70, so that the flowing gas can be heated more efficiently.

[0085] In one embodiment, when the fourth heating element 70 is a heating mesh structure, the heating mesh can be received and limited by the second air flow channel 20 formed by the cooperation of the first heating element 30 and the second heating element 40. Thus, a corresponding installation structure for installing the heating mesh is avoided, and the installation efficiency of the heating mesh can be improved.

[0086] In another embodiment, when the fourth heating element 70 is a heating wire, the heating wire can be wound around the outer wall of the second heating element 40 and is located in the second air flow channel 20 formed by the cooperation of the first heating element 30 and the second heating element 40.

[0087] On the other hand, please refer to Figures 11-14 and in combination with Figures 1-10 as shown, the present application also provides a heat-not-burn device. The device includes the heating structure described in any one of the above. Therefore, the device has the beneficial effects of any one of the above embodiments, which will not be elaborated here.

[0088] Further, the device further includes a housing 310 and a power supply assembly 320. The housing 310 is formed with a receiving chamber 311, and the receiving chamber 311 can be at least used to receive the matrix section 210 of the aerosol generating matrix 200. The heating structure is disposed inside the housing 310 and partially extends into the receiving chamber 311 to insert into the matrix section 210 when the aerosol generating matrix 200 is received in the receiving chamber 311.

[0089] The power supply assembly 320 is electrically connected to the heating structure and is used to supply power to the heating structure, so that the heating structure generates heat to heat and bake the matrix section 210 of the aerosol generating matrix 200, and to heat the gas flowing through the first air flow channel 10 and the second air flow channel 20 to heat and bake the matrix section 210.

[0090] Please refer to Figure 11 , Figure 11The dashed line in the middle is the demarcation line between the first section and the second section. Among them, the part above the dashed line is the first section, and the part below the dashed line is the second section.

[0091] Furthermore, the heating structure further includes a mounting seat 80, which is hermetically installed in the housing 310 and located at the bottom of the receiving chamber 311. The second section is disposed on the mounting seat 80, and the mounting seat 80 is formed with an air inlet passage 81 along the direction in which the heating structure is inserted into the aerosol generating substrate 200. The first air flow passage 10 communicates with the air inlet passage 81 through the air inlet.

[0092] For the sake of convenience in description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0093] In addition, it should be noted that using words such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above words have no special meanings, so they cannot be construed as limiting the protection scope of the present application.

[0094] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A heating structure for insertion into a substrate section (210) of an aerosol - generating substrate (200), characterized in that, The internal structure of the heating structure forms a first air flow channel (10) and a second air flow channel (20) that are interconnected. The first air flow channel (10) has an air inlet hole (11), and the second air flow channel (20) has an air outlet hole (21). Gas enters the first air flow channel (10) from the air inlet hole (11), flows through the second air flow channel (20), and enters the matrix section (210) from the air outlet hole (21). Wherein, the flow direction of the gas in the first air flow channel (10) is opposite to the flow direction of the gas in the second air flow channel (20), and the heating structure is configured to heat the gas flowing through the first air flow channel (10) and the second air flow channel (20), and to heat the matrix section (210).

2. The heating structure according to claim 1, characterized in that, The heating structure includes a first section and a second section. The first section is for inserting into the aerosol generating matrix (200), and the second section is for fixing the heating structure. The air inlet hole (11) is located in the second section, the air outlet hole (21) is located in the first section, and at least one of the air outlet holes (21) is close to the second section.

3. The heating structure according to claim 2, characterized in that The heating structure includes: a first heating element (30) having a hollow channel (31); and a second heating element (40) disposed in the hollow channel (31) and separating the hollow channel (31) into the first air flow channel (10) and the second air flow channel (20) along the direction in which the heating structure is inserted into the aerosol generating matrix (200).

4. The heating structure according to claim 3, characterized in that, The first heating element (30) is a tubular structure with one end open; The second heating element (40) is hollow and has both ends open to form the first air flow channel (10), and the outer wall of the second heating element (40) is spaced from the inner wall of the first heating element (30) to form the second air flow channel (20).

5. The heating structure according to claim 4, characterized in that, The first end (43) of the second heating element (40) corresponding to the air inlet hole (11) is sealingly connected to the open end (33) of the first heating element (30), and the second end (44) of the second heating element (40) away from the air inlet hole (11) extends beyond the air outlet hole (21) along the direction in which the heating structure is inserted into the aerosol generating matrix (200).

6. The heating structure according to claim 3, wherein The first heating element (30) and / or the second heating element (40) is for resistive heating and / or electromagnetic induction heating.

7. The heating structure according to claim 3, wherein The heating structure includes a third heating element (60) disposed in the first air flow channel (10), and / or includes a fourth heating element (70) disposed in the second air flow channel (20). The third heating element (60) and / or the fourth heating element (70) generates heat to heat the first heating element (30) and the second heating element (40).

8. The heating structure according to claim 7, wherein, The third heating element (60) and / or the fourth heating element (70) is for resistive heating and / or electromagnetic induction heating.

9. The heating structure according to claim 7, wherein, The third heating element (60) is received in the first air flow channel (10) corresponding to the first section, and / or the fourth heating element (70) is received in the second air flow channel (20) corresponding to the first section; or The third heating element (60) is partially received in the first air flow channel (10) corresponding to the second section, and / or the fourth heating element (70) is partially received in the second air flow channel (20) corresponding to the second section.

10. The heating structure according to claim 7, wherein, The fourth heating element (70) is limited by the first heating element (30) and the second heating element (40) to be received in the second air flow channel (20).

11. A heat-not-burn device, characterized in that, Comprising a housing (310), a power supply assembly (320) and the heating structure according to any one of claims 1-10, the housing (310) is configured to form a receiving chamber (311) for receiving the aerosol generating substrate (200), the heating structure is disposed inside the housing (310) and partially extends into the receiving chamber (311), and the power supply assembly (320) is configured to supply power to the heating structure.

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