Heating structure, heating non-combustion device and heating non-combustion system

Abstract

The utility model discloses a heating structure which comprises a main body part and a cylindrical heating part, the heating part is arranged in the main body part and defines a heating cavity, and an aerosol generating product is inserted into the heating cavity; a first air passage is arranged between the inner surface of the heating part and the aerosol generating product, and a second air passage is arranged between the outer surface of the heating part and the main body part; a first air inlet and a second air inlet are formed in the main body part, the first air channel communicates with the first air inlet and the heating cavity, and the second air channel communicates with the second air inlet and the heating cavity; air entering from the first air inlet hole flows through the first air channel, and air in the first air channel is preheated by the heating part and then enters the aerosol generating product; air entering from the second air inlet hole flows through the second air channel, and air in the second air channel is preheated by the heating part and then enters the aerosol generating product. According to the heating structure, rapid temperature rise can be achieved, and the waiting time is shortened. The utility model further discloses a heating non-combustion device and a heating non-combustion system which comprise the heating structure.

Description

Technical Field

[0001] The present application relates to the technical field of heat-not-burn technology, and in particular, to a heating structure, a heat-not-burn device, and a heat-not-burn system using the heating structure. Background Art

[0002] With the improvement of consumers' health awareness, the tobacco industry has continuously responded to the upgrading of consumers' demands. Among them, heat-not-burn devices have been widely regarded as the hope and direction for the sustainable development of the tobacco industry.

[0003] The heat-not-burn device mainly heats the aerosol-generating article at a temperature lower than the combustion temperature, so that an aerosol containing nicotine or other components is generated during the heating process for people to inhale. At the same time, the lower temperature can effectively reduce the generation of harmful substances such as tar.

[0004] The related heat-not-burn devices mainly have two heating methods: central heating and circumferential heating. Among them, the circumferential heating method has the advantages of a large heating area and high heat transfer efficiency, which improves the utilization rate of the aerosol matrix, generates a large amount of smoke, and is easy to clean and maintain. However, for the heat-not-burn device using the circumferential heating method, when starting up, the heating part needs to directly heat the aerosol matrix and the incoming air from room temperature to the target temperature, with a large temperature difference, high energy consumption, and a long waiting time.

[0005] Therefore, it is necessary to propose a heat-not-burn device with better heating effect. Utility Model Content

[0006] In order to solve one of the technical problems existing in the prior art, the present application provides a heating structure, in which a first air passage and a second air passage are respectively arranged on both sides of the heating part. After the air is preheated by the first air passage and the second air passage, it enters the aerosol-generating article, reducing the temperature difference between the starting temperature and the target temperature, realizing rapid temperature rise, and shortening the waiting time.

[0007] The present application also provides a heat-not-burn device applying the above heating structure.

[0008] In addition, the present application also provides a heat-not-burn system including the above heat-not-burn device.

[0009] A heating structure according to an embodiment of the first aspect of the present application is used for heating an aerosol-generating article. The heating structure includes:

[0010] A main body part; a first opening is provided on the main body part;

[0011] A cylindrical heating part is arranged inside the main body part and defines a heating cavity. The first opening communicates with the heating cavity, and the aerosol generating article can be inserted into the heating cavity through the first opening. When the aerosol generating article is inserted into the heating cavity, a first air passage is arranged between the inner surface of the heating part and the aerosol generating article. A second air passage is arranged between the outer surface of the heating part and the main body part.

[0012] Wherein, a first air inlet hole and a second air inlet hole are formed in the main body part. The first air passage communicates the first air inlet hole with the heating cavity, and the second air passage communicates the second air inlet hole with the heating cavity. The air entering the first air passage from the first air inlet hole can enter the aerosol generating article after being preheated by the heating part. The air entering the second air passage from the second air inlet hole can enter the aerosol generating article after being preheated by the heating part.

[0013] According to the heating structure of the first aspect embodiment of the present application, it has at least the following beneficial effects: The heating structure of the present application is respectively provided with a first air passage and a second air passage on both sides of the heating part. During operation, the air passing through the first air passage contacts the inner surface of the heating part, and the air passing through the second air passage contacts the outer surface of the heating part. The heat of the heating part is fully utilized to preheat the air, improving the utilization rate. The preheated air then enters the aerosol generating article, raising the starting temperature of the aerosol generating article, reducing the temperature difference between the starting temperature and the target temperature, achieving rapid heating, and shortening the waiting time.

[0014] According to the heating structure described in the first aspect of the present application, one or more third through holes are formed at the bottom of the heating part. The third through holes communicate the second air passage with the heating cavity. The air in the second air passage enters the heating cavity through the third through holes and finally enters the aerosol generating article.

[0015] According to the heating structure described in the first aspect of the present application, the ratio of the total area of the third through holes to the bottom area of the heating part is n, and n is less than two-thirds.

[0016] According to the heating structure described in the first aspect of the present application, the first air inlet hole, the second air inlet hole, and the first opening are formed on the same side of the main body part.

[0017] According to the heating structure described in the first aspect of the present application, the first air inlet hole is an inclined hole, and the first air passage is spiral and arranged circumferentially around the heating cavity; and / or,

[0018] The second air inlet hole is an inclined hole, and the second air passage is spiral and arranged circumferentially around the heating cavity.

[0019] For the heating structure according to the first aspect of the present application, a support portion is provided between the bottom of the heating portion and the bottom of the main body portion.

[0020] A heat-not-burn device according to an embodiment of the second aspect of the present application includes the heating structure according to the embodiment of the first aspect of the present application.

[0021] The heat-not-burn device according to the embodiment of the second aspect of the present application has at least the following beneficial effects: The heat-not-burn device of the present application includes the above heating structure. By respectively providing a first air passage and a second air passage on both sides of the heating portion, the heat of the heating portion is fully utilized, the utilization rate is improved, so as to achieve rapid temperature rise and shorten the waiting time.

[0022] For the heat-not-burn device according to the second aspect of the present application, the heat-not-burn device includes an outer casing, and the heating structure is disposed inside the outer casing.

[0023] For the heat-not-burn device according to the second aspect of the present application, the heating structure and the outer casing are of an integral structure, or the heating structure and the outer casing are of a split structure.

[0024] For the heat-not-burn device according to the second aspect of the present application, the inside of the outer casing is filled with a filler for heat insulation.

[0025] A heat-not-burn system according to an embodiment of the third aspect of the present application includes the heat-not-burn device according to the embodiment of the second aspect of the present application and an aerosol-generating article, and the aerosol-generating article is inserted into the heating cavity of the heat-not-burn device from the first opening.

[0026] The heat-not-burn system according to the embodiment of the third aspect of the present application has at least the following beneficial effects: The heat-not-burn system of the present application includes the above heat-not-burn device, effectively improving the utilization rate of the heat emitted by the heating portion. During operation, the air entering the aerosol-generating article is preheated first, raising the starting temperature of the aerosol-generating article, reducing the temperature difference between the starting temperature and the target temperature, achieving rapid temperature rise, shortening the waiting time, and providing a better use experience.

[0027] For the heat-not-burn system according to the third aspect of the present application, the aerosol-generating article includes a wrapping layer and an aerosol matrix section and a downstream tube section sequentially arranged in the wrapping layer. The downstream tube section includes at least one of a support section, a cooling section, and a filtering section. The aerosol matrix section is inserted into the heating cavity, and there is a gap between the end of the aerosol-generating article and the bottom of the heating portion. The air flowing through the first air passage and the second air passage and completing preheating enters at the end of the aerosol-generating article.

[0028] The heat-not-burn system according to the third aspect of the present application, wherein the wrapping layer extends beyond the end of the aerosol matrix section, such that a first hollow section is formed at the end of the aerosol generating article.

[0029] The heat-not-burn system according to the third aspect of the present application, wherein a through first through-hole is formed in the side wall of the first hollow section, and the first through-hole communicates the first air passage and the first hollow section.

[0030] The heat-not-burn system according to the third aspect of the present application, wherein the aerosol matrix section is filled with particulate aerosol matrix, and a second hollow section is provided between the aerosol matrix section and the downstream pipe section.

[0031] Other features and advantages of the present application will be set forth in the following description, and in part will be obvious from the description, or may be learned by practice of the present application. The objectives and other advantages of the present application may be realized and attained by the structure particularly pointed out in the specification, claims as well as the drawings. Description of the Drawings

[0032] To more clearly illustrate the technical solutions of the present application, the following will further explain the present application in conjunction with the drawings and embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0033] Figure 1 is a schematic structural diagram of the first heat-not-burn system embodiment provided by the present application;

[0034] Figure 2 is Figure 1 a schematic diagram of the air flow when the heating structure in

[0035] Figure 3 is a schematic structural diagram of the second heat-not-burn system embodiment provided by the present application;

[0036] Figure 4 is a schematic structural diagram of the third heat-not-burn system embodiment provided by the present application;

[0037] Figure 5 is a schematic structural diagram of the fourth heat-not-burn system embodiment provided by the present application;

[0038] Figure 6 is a schematic structural diagram of the fifth heat-not-burn system embodiment provided by the present application.

[0039] Label Description:

[0040] Heating structure 100, main body 110, heating chamber 111, first air inlet hole 112, second air inlet hole 113, heating part 120, first air passage 121, second air passage 122, third through hole 123, support part 130, fourth through hole 131;

[0041] Aerosol generating article 200, wrapping layer 201, aerosol matrix section 210, support section 220, cooling section 230, filtering section 240, sealing film 250, first hollow section 260, first through hole 261, second hollow section 270;

[0042] Outer housing 300, filler 310. Specific embodiments

[0043] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. 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, or methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid the core part of the present application being overwhelmed by excessive descriptions. 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 descriptions in the specification and general technical knowledge in the art.

[0044] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean that they are necessary sequences, unless it is stated that a certain sequence must be followed.

[0045] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. And the "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0046] When an existing heat-not-burn system starts to work (when taking the first puff), it directly sucks in outside air into the aerosol matrix section of the aerosol-generating article. The heating section heats the aerosol matrix and the incoming air directly from room temperature to the target temperature, resulting in a large temperature difference, high energy consumption, and a long waiting time. Moreover, when the existing heat-not-burn system adopts a circumferential heating method, generally only the heat dissipated from the inner surface of the heating section is used to heat the aerosol matrix section, and the heat dissipated from the outer surface of the heating section is not fully utilized, resulting in a low energy utilization rate.

[0047] To solve the problems existing in the existing products, the heating structure, heat-not-burn device, and heat-not-burn system proposed in this application will be further elaborated below in conjunction with multiple embodiments in Figure 1 to Figure 6 of the accompanying drawings.

[0048] Please refer to Figures 1 to 6 , in the embodiments of this application, a heating structure 100 is provided. The heating structure 100 is used to heat the aerosol-generating article 200, and the heating structure 100 includes a main body portion 110 and a heating portion 120.

[0049] Specifically, the heating portion 120 is a cylindrical structure. The heating portion 120 is disposed inside the main body portion 110 and defines a heating cavity 111. A first opening communicating with the heating cavity 111 is provided on the main body portion 110. As Figures 1 to 6 shown, the aerosol-generating article 200 can be inserted into the heating cavity 111 through the first opening. When the aerosol-generating article 200 is inserted into the heating cavity 111, the heating portion 120 surrounds the aerosol-generating article 200 located inside the heating cavity 111 to increase the heating area and improve the heat transfer efficiency. A first air passage 121 is provided between the inner surface of the heating portion 120 and the aerosol-generating article 200, and a second air passage 122 is provided between the outer surface of the heating portion 120 and the main body portion 110. First air intake holes 112 and second air intake holes 113 are also provided on the main body portion 110. Among them, the first air passage 121 connects the first air intake hole 112 with the heating cavity 111. The air entering from the first air intake hole 112 first flows through the first air passage 121 and then enters the aerosol-generating article 200 located in the heating cavity 111. The second air passage 122 connects the second air intake hole 113 with the heating cavity 111. The air entering from the second air intake hole 113 first flows through the second air passage 122 and then enters the aerosol-generating article 200.

[0050] As Figures 2 to 4As shown, when the above heating structure 100 operates, outside air enters from the first air inlet hole 112 and the second air inlet hole 113, and needs to pass through the corresponding first air passage 121 and second air passage 122. The air flowing through the first air passage 121 and the second air passage 122 first makes full contact with the two surfaces of the heating part 120 and absorbs the heat of the heating part 120 before entering the aerosol generation article 200, thereby raising the starting temperature of the aerosol generation article 200. The aerosol generation article 200 after preliminary temperature rise is then fully heated by the heating part 120 to the target temperature. Through the design of the first air passage 121 and the second air passage 122, the heating structure 100 of the present application makes full use of the heat of the heating part 120 to preheat the air to enter the aerosol generation article 200, improves the utilization rate of the energy of the heating part 120, and at the same time raises the starting temperature of the aerosol generation article 200, reduces the temperature difference between the starting temperature and the target temperature, realizes rapid temperature rise, and shortens the waiting time.

[0051] In some embodiments, the main body part 110 can be made of a metal material; in other embodiments, the main body part 110 can be made by injection molding with a plastic material; in addition, the main body part 110 can also be made of a composite of multiple materials such as metal and plastic.

[0052] In some embodiments, the heating part 120 can be a metal heating sheet, which is simple to manufacture, low in cost, and easy to replace and maintain; in other embodiments, the heating part 120 can also be made by printing metal circuits on both sides of a ceramic sheet.

[0053] As Figures 1 to 5 shown, in some implementations, one or more third through holes 123 are formed at the bottom of the heating part 120. The third through holes 123 communicate the second air passage 122 with the heating cavity 111. The air in the second air passage 122 enters the aerosol generation article 200 located in the heating cavity 111 after passing through the third through holes 123. It should be noted that the heating part 120 is provided with a bottom, which can increase the heat generation area and further improve the heating efficiency. In order to enable the air in the second air passage 122 to smoothly enter the aerosol generation article 200, the third through holes 123 need to be formed at the bottom of the heating part 120. Further, the ratio of the total area of the third through holes 123 to the bottom area of the heating part 120 is n, and n is less than two-thirds. The total area of the third through holes 123 is less than two-thirds of the bottom area of the heating part 120, ensuring the heat generation amount at the bottom of the heating part 120.

[0054] As Figures 1 to 5As shown, in some embodiments, a support portion 130 is provided between the bottom of the heating portion 120 and the bottom of the main body portion 110. It should be noted that the provision of the support portion 130 can support and fix the heating portion 120, making the connection and fixation between the heating portion 120 and the main body portion 110 more stable and reliable. Further, a fourth through-hole 131 is provided on the support portion 130. It should be noted that the provision of the fourth through-hole 131 enables the air in the second air passage 122 to better pass through the support portion 130, and then flow into the aerosol generating article 200 after passing through the third through-hole 123.

[0055] As Figures 1 to 5 shown, in some embodiments, the first air inlet hole 112 and the first opening are provided on the same side of the main body portion 110. At the same time, the second air inlet hole 113 and the first opening are provided on the same side of the main body portion 110. It should be noted that by providing the first air inlet hole 112 and the first opening, and the second air inlet hole 113 and the first opening on the same side of the main body portion 110, the lengths of the first air passage 121 and the second air passage 122 can be increased, enabling the air flowing through the first air passage 121 and the second air passage 122 to fully contact the heating portion 120 and absorb the heat of the heating portion 120, thereby improving the energy utilization rate.

[0056] In some embodiments, the first air inlet hole 112 can be a straight through-hole for easy processing, and the cross-sectional shape of the first air inlet hole 112 includes a circle, a square, a polygon, etc. In some other embodiments, the first air inlet hole 112 and the first air passage 121 can also be provided with a structure capable of generating a vortex. For example, the inner wall of the first air inlet hole 112 is provided as an inclined hole, and at the same time, the first air passage 121 is arranged in a spiral shape around the circumference of the heating cavity 111, so that the air flow passing through the first air inlet hole 112 and the first air passage 121 forms a vortex, and the rotating air can more fully contact the heating portion 120, improving the heat transfer efficiency.

[0057] In some embodiments, the second air inlet hole 113 can be a straight through-hole for easy processing, and the cross-sectional shape of the second air inlet hole 113 includes a circle, a square, a polygon, etc. In some other embodiments, the second air inlet hole 113 and the second air passage 122 can also be provided with a structure capable of generating a vortex. For example, the inner wall of the second air inlet hole 113 is provided as an inclined hole, and at the same time, the second air passage 122 is arranged in a spiral shape around the circumference of the heating cavity 111, so that the air flow passing through the first air inlet hole 112 and the first air passage 121 forms a vortex, and the rotating air can more fully contact the heating portion 120, improving the heat transfer efficiency.

[0058] This application also provides an embodiment of a heat-not-burn device, including an outer housing and the above-mentioned heating structure 100, and the heating structure 100 is arranged inside the outer housing. As Figures 1 to 5As shown, in some embodiments, the outer housing can be an integral structure with the main body 110 of the heating structure 100, that is, the main body 110 undertakes the function of the outer housing or the outer housing is integrally provided on the outer surface of the main body 110, so that the structure is more compact, and the volume of the heat-not-burn device can be reduced, improving its portability. As Figure 6 As shown, in some other embodiments, the outer housing 300 and the heating structure 100 can also be a split structure. A cavity for accommodating the heating structure 100 is provided in the outer housing 300, and the heating structure 100 is installed and fixed inside the outer housing 300 by one of the connection methods such as snap connection, thread, bolt, etc.

[0059] Furthermore, as Figure 6 As shown, in some embodiments, the outer housing 300 can also be filled with a heat-insulating filler 310 to improve the heat-insulating performance of the heat-not-burn device, which can not only avoid heat loss, but also avoid scalding the user.

[0060] As Figures 1 to 6 As shown, the present application also provides a heat-not-burn system, which includes the above-mentioned heat-not-burn device and the aerosol-generating article 200. The aerosol-generating article 200 is inserted into the heating chamber 111 of the heat-not-burn device from the first opening. The heat-not-burn system of the present application includes the above-mentioned heating structure 100. During operation, the air entering the aerosol-generating article 200 is preheated first, the starting temperature of the aerosol-generating article 200 is increased, the temperature difference between the starting temperature and the target temperature is reduced, rapid heating is achieved, the waiting time is shortened, and the user experience is better.

[0061] As Figures 1 to 5 As shown, in some embodiments, the aerosol-generating article 200 includes an aerosol matrix section 210 for inserting into the heating chamber 111 and a downstream pipe section located outside the main body. The downstream pipe section includes at least one of a support section 220, a cooling section 230, and a filtering section 240.

[0062] As Figure 1 and Figure 2 As shown, in the first embodiment of the present application, the aerosol-generating article 200 includes an aerosol matrix section 210, a support section 220, a cooling section 230, and a filtering section 240 arranged in sequence in the wrapping layer 201. The aerosol matrix section 210 is internally provided with a flaky or filamentous or strip-shaped aerosol matrix. A sealing film 250 is provided at the end of the aerosol matrix section 210. The sealing film 250 is made of a breathable material. Among them, when the aerosol-generating article 200 is inserted into the heating chamber 111, there is a gap between the sealing film 250 and the bottom of the heating part 120. As Figure 2As shown, the air flowing through the first air passage 121 and the second air passage 122 and completing preheating finally passes through the sealing film 250 and enters the aerosol matrix section 210.

[0063] As Figure 3 shown, in the second embodiment of the present application, the aerosol generating article 200 also includes an aerosol matrix section 210, a support section 220, a cooling section 230, and a filtering section 240 that are sequentially arranged in the wrapping layer 201. The aerosol matrix section 210 is internally provided with a flaky, filamentous, or strip-shaped aerosol matrix. In this embodiment, the wrapping layer 201 extends beyond the end of the aerosol matrix section 210, so that a first hollow section 260 is formed at the end of the aerosol generating article 200. A through first through hole 261 is formed in the side wall of the first hollow section 260, and the first through hole 261 communicates the first air passage 121 and the first hollow section 260; the air flowing through the first air passage 121 and the second air passage 122 and completing preheating finally converges in the first hollow section 260 and then enters the aerosol matrix section 210. The setting of the first hollow section 260 can enable the hot air in the first air passage 121 and the second air passage 122 to converge and then enter the aerosol matrix section 210 together, so as to heat the aerosol matrix section 210 more sufficiently.

[0064] As Figure 4 shown, in the third embodiment of the present application, the aerosol generating article 200 includes an aerosol matrix section 210, a support section 220, a cooling section 230, and a filtering section 240 that are sequentially arranged in the wrapping layer 201. The aerosol matrix section 210 is internally provided with a granular aerosol matrix. A second hollow section 270 is arranged between the aerosol matrix section 210 and the downstream pipe section. A sealing film 250 is arranged at one end of the aerosol matrix section 210 away from the downstream pipe section, and the sealing film 250 is made of a breathable material. It should be noted that the setting of the sealing film 250 can prevent the granular aerosol matrix from falling out; and the setting of the second hollow section 270 can reduce the resistance when inhaling the aerosol, making the process of inhaling the aerosol smoother. As Figure 4 shown, the air flowing through the first air passage 121 and the second air passage 122 and completing preheating finally passes through the sealing film 250 and enters the aerosol matrix section 210.

[0065] As Figure 5As shown, in the fourth embodiment provided by the present application, the aerosol generating article 200 includes an aerosol matrix segment 210, a support segment 220, a cooling segment 230, and a filtering segment 240 that are sequentially arranged in the wrapping layer 201. A granular aerosol matrix is provided inside the aerosol matrix segment 210. A second hollow segment 270 is provided between the aerosol matrix segment 210 and the downstream pipe segment. A sealing film 250 made of a breathable material is provided at one end of the aerosol matrix segment 210 away from the downstream pipe segment. In this embodiment, the wrapping layer 201 extends beyond the end of the aerosol matrix segment 210, so that a first hollow segment 260 is formed at the end of the aerosol generating article 200. A through first through hole 261 is provided on the side wall of the first hollow segment 260. The first through hole 261 communicates the first air passage 121 and the first hollow segment 260; the air flowing through the first air passage 121 and the second air passage 122 and completed preheating finally converges in the first hollow segment 260 and then enters the aerosol matrix segment 210.

[0066] It can be understood that the above embodiments only express the preferred implementation manners of the present application, and the descriptions thereof are relatively specific and detailed, but they should not be construed as limiting the patent scope of the present application; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present application; therefore, all equivalent transformations and modifications made to the scope of the claims of the present application should fall within the scope covered by the claims of the present application.

Claims

1. A heating structure (100) for heating an aerosol-generating article (200), characterized in that, The heating structure (100) includes: A main body portion (110) having a first opening provided thereon; A cylindrical heating portion (120) disposed within the main body portion (110) and defining a heating chamber (111), the first opening communicating with the heating chamber (111), and the aerosol generating article (200) being insertable into the heating chamber (111) through the first opening; when the aerosol generating article (200) is inserted into the heating chamber (111), a first air passage (121) is provided between the inner surface of the heating portion (120) and the aerosol generating article (200); a second air passage (122) is provided between the outer surface of the heating portion (120) and the main body portion (110); Wherein, a first air inlet hole (112) and a second air inlet hole (113) are formed in the main body portion (110), the first air passage (121) communicates the first air inlet hole (112) with the heating chamber (111), and the second air passage (122) communicates the second air inlet hole (113) with the heating chamber (111); the air entering the first air passage (121) from the first air inlet hole (112) can enter the aerosol generating article (200) after being preheated by the heating portion (120); the air entering the second air passage (122) from the second air inlet hole (113) can enter the aerosol generating article (200) after being preheated by the heating portion (120).

2. The heating structure (100) according to claim 1, characterized in that, One or more third through holes (123) are formed in the bottom of the heating portion (120), and the third through holes (123) communicate the second air passage (122) with the heating chamber (111).

3. The heating structure (100) according to claim 2, characterized in that, The ratio of the total area of the third through holes (123) to the bottom area of the heating portion (120) is n, and n is less than two-thirds.

4. The heating structure (100) according to claim 1, wherein, The first air inlet hole (112), the second air inlet hole (113), and the first opening are formed on the same side of the main body portion (110).

5. The heating structure (100) according to any one of claims 1 to 4, characterized in that, The first air inlet hole (112) is an inclined hole, and the first air passage (121) is helically arranged circumferentially around the heating chamber (111); and / or, The second air inlet hole (113) is an inclined hole, and the second air passage (122) is helically arranged circumferentially around the heating chamber (111).

6. The heating structure (100) according to any one of claims 1 to 4, characterized in that, A support portion (130) is provided between the bottom of the heating portion (120) and the bottom of the main body portion (110).

7. A heat-not-burn device, characterized in that, Comprising the heating structure (100) according to any one of claims 1 to 6.

8. A heat-not-burn system, characterized in that, Comprising the heat-not-burn device and the aerosol generating article (200) according to claim 7, the aerosol generating article (200) being inserted into the heating chamber (111) of the heat-not-burn device through the first opening.

9. The heat-not-burn system according to claim 8, wherein The aerosol generating article (200) includes a wrapper layer (201), and an aerosol matrix segment (210) and a downstream tube segment sequentially disposed in the wrapper layer (201). The downstream tube segment includes at least one of a support segment (220), a cooling segment (230), and a filtering segment (240). The aerosol matrix segment (210) is inserted into the heating chamber (111). There is a gap between the end of the aerosol generating article (200) and the bottom of the heating part (120). Air flowing through the first air passage (121) and the second air passage (122) and completed preheating enters at the end of the aerosol generating article (200).

10. The heat-not-burn system according to claim 9, wherein The wrapper layer (201) extends beyond the end of the aerosol matrix segment (210), such that a first hollow segment (260) is formed at the end of the aerosol generating article (200).

11. The heat-not-burn system according to claim 10, wherein, A through first through hole (261) is formed in the side wall of the first hollow segment (260), and the first through hole (261) communicates the first air passage (121) and the heating chamber (111).

Images